Magic Bullet Medicine - Experts Say Antioxidant Supplements Don’t Reduce Risks of Disease

April 16th, 2008

Wednesday, April 16, 2008 — Once again, the medical authorities are advising us NOT to take nutritional supplements. This time the effort comes from the United Kingdom. A group of scientists reviewed several dozen health research studies that had covered antioxidant supplements — Vitamin A, Beta Carotene, Vitamin C, the antioxidant mineral Selenium and Vitamin E. The study is linked below.*

The reviewed studies included 67 different efforts that involved over 232,000 people. Both healthy and unhealthy people were studied. The conclusion of this ‘review of reviews’ was that most of the anti-oxidants were not associated with any positive health benefit, except for Selenium.

Some supplemental anti-oxidants were associated with increased risks of death or cancer — Vitamin A and Beta Carotene increased risks by 16% and 7% respectfully, while Vitamin E increased risks of cancer by 4%. Vitamin C did not increase risks, but did not reduce them either. Selenium decreased risks about 9% in men for prostate cancer. Smoking tobacco products was also associated with most of the increases.

THE MAGIC BULLET THEORY

What’s the problem with this new review? Simple. All of these so-called scientific studies that were included in the review were testing the particular supplement the same way, making the same error in judgment — they were looking for a magic bullet.

They were asking “Does adding this supplement to the diet help prevent disease?” Seems like an innocent enough question, right?

Wrong.

When you add a single nutrient to your diet, especially in large quantities, you unbalance a finely tuned biological system. The body is built to operate within certain normal limits. When you upset the balance by adding too much of a particular nutrient, you risk exceeding those limits.

Further, most antioxidants work synergistically. Each operates as a biochemical ‘cog’ in the bio-gears that run your body. Adding one antioxidant without its synergistic partners, and without the cofactors that it needs to function within the body, is certainly not helpful. Why would it be?

When scientists design a study that adds large quantities of any particular nutrient into a balanced system, they are going to ‘discover’ the same result for each added unbalancing compound. They will prove that in health there are NO MAGIC BULLETS.

THE FIX IS IN

Interestingly, the way these studies are setup pre-determines their outcomes.

How should they be studied? They should test people to see if they are deficient in any particular nutrient. Then, for those people only, they should add that nutrient, plus any and all known cofactors and synergistic partner nutrients. Then they should report the results of this practice on the participants.

Even these scientists must already know that people who take a broad range of dietary supplements, in addition to eating a healthy diet, are generally healthier than those who do not. Thousands of studies demonstrate the wisdom of eating a healthy diet and taking a wide range of supplements.

However, taking merely one or two, or even a few supplements in large quantities is obviously NOT a good idea. Why that should be news to anyone is a good question.

So, why are we seeing so many of these “Magic Bullet” quasi-scientific reviews and stories in the news? Because there are powerful interests in the medical, pharmaceutical and health-industry world which desire us to believe that ‘natural cures’ don’t work, while ‘traditional medicine’ does.

The world is full of ‘traditional medicine’ snake-oil salesmen (and women). The magic bullets they are selling are patented. The profits in today’s patented magic bullet medical system are unthinkably enormous. Billions and billions are transferred from our pockets to the owners of the patents on the magic bullets of today’s acceptable, authoritarian sales people.

BILLIONS FOR BULLETS

Today’s patented medicines are the world’s most profitable businesses. Altogether, the patented medical drug business is a TRILLION DOLLAR industry.

This mega-industry overpowers the economies of each of the world’s large countries, as well as all the small nations. It dictates the laws regulating medical commerce, the directions of future research, and the regulations for the practice of medicine itself.

Governmental regulatory bureaus are staffed with people who received their scientific and medical education under subsidies from patent holding drug companies. The medical schools and universities where researchers and physicians undertook their scientific training and education were heavily subsidized by pharmaceutical profits from Magic Bullet Medicine.

Pharmaceutical company representatives — sales people — actually pay doctors to listen to their pitches during sales calls they make in the doctor’s office. Since laws restrain them from paying in cash, they pay with so-called ‘free samples’, other valuable gifts, free dinner invitations, tickets to conventions, lectures, and invitations to speak at events for which the are paid directly. As many as 1/3 of physicians in some specialties have lectured at drug company sponsored events and been paid by the drug companies to do so. See this 2007 article in The Journal of the American Medical Association about payments to doctors.
Because insurance payments to physicians are so low these days, doctors rely on drug rep payments as a major portion of their real income. For some physicians, this can amount to the equivalent of thousands of dollars per month.

Doctors are graded by the pharmaceutical patent owners, and rewarded on a sliding scale according to the number of prescriptions they give to their patients for certain drugs. The data comes from a national prescription database which contains patient info, doctor info and drugs prescribed. Every prescription filled at a pharmacy is entered into the database, which is made available to the drug companies.

Should this system be changed? Well that is a very controversial issue. But that it exists is not. Our system works to ensure the sales of patented ‘magic bullet’ drugs.

It shouldn’t surprise anyone that medical research is oriented to support the magic bullet theory. Nor should it surprise anyone that non-patented magic bullets receive bad reviews by researchers whose education, salaries, and social life all center around patented wonder drugs.

THE MISSING QUESTION

The one question we can be certain that will seldom be asked is — “Are patented drugs generally helpful?” In other words — “Are there ANY magic bullets for health?”
Heaven forbid that we actually figure out that nobody has a magic bullet, a wonder drug or single therapy that will simplify our search for health and youthfulness — compressing the answer into a single pill or a handful of pills.

No matter who tells you they have found a magic bullet for health, don’t believe them.

Health requires a perfect balance of about 50 different nutrients — vitamins, minerals, fiber, fluids, antioxidants, fats, proteins, carbohydrates — all of which can be found freely in common vegetables, fruit, nuts, beans, spices, water, and yes… a few more behaviors including regular exercise, fresh air, exposure to sunlight, and support from companions, loving companionship from friends and family.

There is no magic bullet. Your doctor doesn’t have one, and neither does any vitamin company nor drug store.

The Greek doctor Hippocrates, remembered as the Father of Medicine, said it best thousands of years ago: “Let food be your medicine, and medicine be your food.”

If you’re already sick, then a few pills may help. But that’s a very dangerous road. Tread it with caution.

- - - - -

*Source: Antioxidant supplements for prevention of mortality in healthy participants and patients with various diseases Bjelakovic G, Nikolova D, Gluud LL, Simonetti RG, Gluud C. Antioxidant supplements for prevention of mortality in healthy participants and patients with various diseases. Cochrane Database of Systematic Reviews 2008, Issue 2. Art. No.: CD007176. DOI: 10.1002/14651858.CD007176

Nutritional evaluation of protein, phosphorus, calcium and magnesium bioavailability from lupin (Lupinus albus var. multolupa)-based diets in growing rats: effect of alpha-galactoside oligosaccharide extraction and phytase supplementation.

July 22nd, 2006
Related Articles

Nutritional evaluation of protein, phosphorus, calcium and magnesium bioavailability from lupin (Lupinus albus var. multolupa)-based diets in growing rats: effect of alpha-galactoside oligosaccharide extraction and phytase supplementation.

Br J Nutr. 2006 Jun;95(6):1102-11

Authors: Porres JM, Aranda P, López-Jurado M, Urbano G

The nutritional composition of the legume Lupinus albus var. multolupa, raw or after alpha-galactoside extraction, and its effect on the bioavailability of protein, P, Ca, and Mg by growing rats was evaluated using a balance technique. The protein and dietary fibre content of the lupin flours studied was high, and 89-94% of the dietary fibre was present as insoluble dietary fibre. The alpha-galactoside extraction process did not disrupt the nutritional quality of protein, and the digestive and metabolic utilisation of this nutrient was high and comparable with that obtained from a casein-cystine control diet (pair-fed to the average daily food intake of the experimental groups fed the different lupin diets). Bioavailability of P, Ca, and Mg from the lupin diets tested was high, and supplementation of an exogenous microbial phytase (750 phytase units/kg) did not cause any further improvement. Mineral content in the bone tissue (femur and sternum) did not correlate to mineral balance, which, on the other hand, was related to the mineral content of other tissues such as blood, plasma, liver and kidney. Due to its ability to grow under adverse edaphic and climatic conditions and to its good nutritional quality, alpha-galactoside-free lupin flour supplemented with the required amounts of minerals and vitamins to meet nutrient requirements can be used as an excellent dietary source for the preparation of dietetic products.

PMID: 16768832 [PubMed - indexed for MEDLINE]

Influence of supplemental magnesium, tryptophan, vitamin C, vitamin E, and herbs on stress responses and pork quality.

July 22nd, 2006
Related Articles

Influence of supplemental magnesium, tryptophan, vitamin C, vitamin E, and herbs on stress responses and pork quality.

J Anim Sci. 2006 Jul;84(7):1827-38

Authors: Peeters E, Driessen B, Geers R

This study investigated the effects of supplemental Mg, Trp, vitamin C, vitamin E, and herbs on stress responses, skin lesions, and meat quality of slaughter pigs (106.0 +/- 8.6 kg of BW). These 5 supplements were tested in 4 similar experiments. In Exp. 1, 2 treatments were tested: 1) control treatment without supplementation, and 2) supplementation of an herbal product (2.5 g/L of drinking water for 2 d). Eighty-eight pigs per treatment were involved, of which 40 were selected for meat quality measurements (over 4 replicates). The experimental design of Exp. 2 and 3 was the same as Exp. 1, except that in Exp. 2 Mg (3 g/L of drinking water for 2 d) was supplemented and in Exp. 3 Trp (6 g/kg of feed, as-fed basis) was supplemented. In Exp. 4, 3 treatments were tested: 1) control treatment without supplementation, 2) supplementation of vitamin C (300 mg/kg of feed for 21 d, as-fed basis), and 3) supplementation of vitamin E (150 mg/kg of feed for 21 d, as-fed basis). In Exp. 4, 66 pigs per treatment were used, of which 42 were evaluated for meat quality (over 6 replicates). Pigs supplemented with vitamin E ate less than control (P = 0.03) or vitamin C-supplemented pigs (P = 0.03). Pigs were transported to a commercial slaughterhouse and were slaughtered after a lairage period. Blood sampling at slaughter revealed no differences between the control and supplemented pigs in plasma cortisol, glucose, lactate, or creatine kinase concentrations. Pigs provided with Mg (P = 0.002) or Trp (P = 0.04) had lower plasma NEFA concentrations than control pigs, and pigs supplemented with vitamin C had greater concentrations than the control (P = 0.03) or vitamin E-supplemented pigs (P = 0.01). Supplementation of the herbal product increased the frequency of pigs with shoulder (P = 0.05) and loin lesions (P = 0.03), whereas Mg lowered the incidence of loin lesions (P = 0.01). Measurements of pH and temperature in the LM and biceps femoris 45 min postmortem revealed no differences among treatments, and no influence of treatments on LM pH, electrical conductivity, and water holding capacity was observed 48 h postmortem. Compared with the control loins, loins of pigs supplemented with vitamin C (Japanese color scale, L*, and a* value; P < 0.05) or vitamin E (Japanese color scale and a* value; P < 0.03) were redder and less pale, and the loin of vitamin E-supplemented pigs was more yellow (b* value; P = 0.04). Generally, Mg could lower loin damage, whereas vitamin C and vitamin E supplementation resulted in a color improvement of the loin.

PMID: 16775067 [PubMed - in process]

Molecular dynamics simulations show that bound Mg2+ contributes to amino acid and aminoacyl adenylate binding specificity in aspartyl-tRNA synthetase through long-range electrostatic interactions.

July 22nd, 2006
Related Articles

Molecular dynamics simulations show that bound Mg2+ contributes to amino acid and aminoacyl adenylate binding specificity in aspartyl-tRNA synthetase through long-range electrostatic interactions.

J Biol Chem. 2006 Jun 14;

Authors: Thompson D, Simonson T

Molecular recognition between the aminoacyl-tRNA synthetase enzymes and their cognate amino acid ligands is essential for the faithful translation of the genetic code. In aspartyl-tRNA synthetase (AspRS), the co-substrate ATP binds preferentially with three associated Mg(2+) cations, in an unusual, bent geometry. The Mg(2+) cations play a structural role and are thought to also participate catalytically in the enzyme reaction. Co-binding of the ATP:Mg(2+)(3) complex was shown recently to increase the Asp/Asn binding free energy difference, indicating that amino acid discrimination is substrate-assisted. Here, we use molecular dynamics free energy simulations and continuum electrostatic calculations to resolve three related questions. First, we show that if one of the Mg(2+) cations is removed, the Asp/Asn binding specificity is strongly reduced. Second, we compute the relative stabilities of the three-cation complex and the two-cation complexes. We find that the three-cation complex is overwhelmingly favoured at ordinary magnesium concentrations, so that the protein is protected against the two-cation state. In the homologous LysRS, the three-cation complex is also strongly favoured, but the third cation does not affect Lys binding. Finally, in tRNA-bound AspRS, the single remaining Mg(2+) cation strongly favours the Asp-adenylate substrate, relative to Asn-adenylate. Thus, in addition to their structural and catalytic roles, the Mg(2+) cations contribute to specificity in AspRS, through long-range electrostatic interactions with the Asp sidechain in both the pre- and post-adenylation states.

PMID: 16774919 [PubMed - as supplied by publisher]

Reactive uptake of nitric acid onto sodium chloride aerosols across a wide range of relative humidities.

July 22nd, 2006
Related Articles

Reactive uptake of nitric acid onto sodium chloride aerosols across a wide range of relative humidities.

J Phys Chem A Mol Spectrosc Kinet Environ Gen Theory. 2006 Jun 22;110(24):7614-20

Authors: Saul TD, Tolocka MP, Johnston MV

Reactive uptake coefficients for nitric acid onto size-selected (d(ve) = 102 and 233 nm) sodium chloride aerosols are determined for relative humidities (RH) between 85% and 10%. Both pure sodium chloride and sodium chloride mixed with magnesium chloride (X(Mg/Na) = 0.114, typical of sea salt) are studied. The aerosol is equilibrated with a carrier gas stream at the desired RH and then mixed with nitric acid vapor at a concentration of 60 ppb in a laminar flow tube reactor. At the end of the reactor, the particle composition is determined in real time with a laser ablation single particle mass spectrometer. For relative humidities above the efflorescence relative humidity (ERH), the particles exist as liquid droplets and the uptake coefficient ranges from 0.05 at 85% RH to >0.1 near the ERH. The droplet sizes, relative humidity and composition dependencies, are readily predicted by thermodynamics. For relative humidities below the ERH, the particles are nominally “solid” and uptake depends on the amount of surface adsorbed water (SAW). The addition of magnesium chloride to the particle phase (0.114 mole ratio of magnesium to sodium) facilitates uptake by increasing the amount of SAW. In the presence of magnesium chloride, the uptake coefficient remains high (>0.1) down to 10% RH, suggesting that the displacement of chloride by nitrate in fine sea salt particles is efficient over the entire range of conditions in the ambient marine environment. In the marine boundary layer, displacement of chloride by nitrate in fine sea salt particles should be nearly complete within a few hours (faster in polluted areas)-a time scale much shorter than the particle residence time in the atmosphere.

PMID: 16774205 [PubMed - in process]

Characterization of a new virulent phage (MLC-A) of Lactobacillus paracasei.

July 22nd, 2006
Related Articles

Characterization of a new virulent phage (MLC-A) of Lactobacillus paracasei.

J Dairy Sci. 2006 Jul;89(7):2414-23

Authors: Capra ML, Del L Quiberoni A, Ackermann HW, Moineau S, Reinheimer JA

A new virulent bacteriophage (MLC-A) was recently isolated in Argentina from a probiotic dairy product containing a strain of Lactobacillus paracasei. Observation of the lysate with an electron microscope revealed bacteriophage particles with an icosahedral capsid of 57 +/- 2 nm; with a collar and a noncontractile tail of 156 +/- 3 nm terminating with a baseplate to which a tail fiber was attached. Therefore, phage MLC-A belongs to the Siphoviridae family. This phage was able to survive the pasteurization process and was resistant to alcohols and sodium hypochlorite (400 mg/kg). Only peracetic acid could inactivate high-titer suspensions of phages in a short time. The maximum rates of phage adsorption to its host cells were obtained at 30 degrees C with a pH between 5 and 7, and in the presence of calcium or magnesium ions. The host range of phage MLC-A encompassed L. paracasei and Lactobacillus casei strains, but it was not able to infect Lactobacillus rhamnosus or Lactobacillus gasseri strains. One-step growth kinetics of its lytic development revealed latent and burst periods of 30 and 135 min, respectively, with a burst size of about 69 +/- 4 plaque-forming units per infected cell. Phage MLC-A had a distinctive restriction profile when compared with the 2 well-studied Lactobacillus phages, PL-1 and J-1. The genome size of the MLC-A phage was estimated to be approximately 37 kb. This study presents the description of the first phage specific for L. paracasei isolated in Argentina. The isolation of phage MLC-A indicates that, beside lactic acid bacteria starters, probiotic cultures can also be sensitive to virulent phages in industrial processes.

PMID: 16772557 [PubMed - in process]

The use of selected nutrition supplements and complementary and alternative medicine in liver disease.

July 22nd, 2006
Related Articles

The use of selected nutrition supplements and complementary and alternative medicine in liver disease.

Nutr Clin Pract. 2006 Jun;21(3):255-72

Authors: Hanje AJ, Fortune B, Song M, Hill D, McClain C

Almost all patients with liver disease, especially advanced liver disease, have some evidence of malnutrition, including mineral/vitamin deficiency. A major health trend in the United States has been the significant growth in the use of complementary and alternative medicine (CAM), including nutrition supplements and herbal agents. In the 1990s, the United States government created the National Center for Complementary and Alternative Medicine (NCCAM), as well as the Office on Dietary Supplements, to extend our knowledge in these areas. CAM users are often highly educated and frequently use CAM therapy for chronic diseases, including chronic liver disease. Indeed, most studies suggest that patients with chronic liver disease frequently use nutrition supplements and CAM agents in addition to their traditional medicines. The purpose of this review is to provide an update on the role of nutrition supplements and herbals in liver disease. This article will focus mainly on 7 selected agents (vitamin E, zinc, magnesium, S-adenosylmethionine, betaine, silymarin, and glycyrrhizin), for which there have been not only in vitro and animal studies but also human clinical trials, and we will review both potential efficacy and safety issues.

PMID: 16772543 [PubMed - in process]

Catalytic mechanism of transition-metal compounds on Mg hydrogen sorption reaction.

July 22nd, 2006
Related Articles

Catalytic mechanism of transition-metal compounds on Mg hydrogen sorption reaction.

J Phys Chem B Condens Matter Mater Surf Interfaces Biophys. 2006 Jun 8;110(22):11020-4

Authors: Barkhordarian G, Klassen T, Bormann R

The catalytic mechanisms of transition-metal compounds during the hydrogen sorption reaction of magnesium-based hydrides were investigated through relevant experiments. Catalytic activity was found to be influenced by four distinct physico-thermodynamic properties of the transition-metal compound: a high number of structural defects, a low stability of the compound, which however has to be high enough to avoid complete reduction of the transition metal under operating conditions, a high valence state of the transition-metal ion within the compound, and a high affinity of the transition-metal ion to hydrogen. On the basis of these results, further optimization of the selection of catalysts for improving sorption properties of magnesium-based hydrides is possible. In addition, utilization of transition-metal compounds as catalysts for other hydrogen storage materials is considered.

PMID: 16771356 [PubMed - in process]

Nonpharmacologic strategies for managing hypertension.

July 22nd, 2006
Related Articles

Nonpharmacologic strategies for managing hypertension.

Am Fam Physician. 2006 Jun 1;73(11):1953-6

Authors: Wexler R, Aukerman G

The Seventh Report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure recommends lifestyle modification for all patients with hypertension or prehypertension. Modifications include reducing dietary sodium to less than 2.4 g per day; increasing exercise to at least 30 minutes per day, four days per week; limiting alcohol consumption to two drinks or less per day for men and one drink or less per day for women; following the Dietary Approaches to Stop Hypertension eating plan (high in fruits, vegetables, potassium, calcium, and magnesium; low in fat and salt); and achieving a weight loss goal of 10 lb (4.5 kg) or more. Alternative treatments such as vitamin C, coenzyme Q10, magnesium, and omega-3 fatty acids have been suggested for managing hypertension, but evidence for their effectiveness is lacking.

PMID: 16770925 [PubMed - indexed for MEDLINE]

Unusual asymptomatic giant sialolith of the submandibular gland: a clinical report.

July 22nd, 2006
Related Articles

Unusual asymptomatic giant sialolith of the submandibular gland: a clinical report.

J Craniofac Surg. 2006 May;17(3):549-52

Authors: Graziani F, Vano M, Cei S, Tartaro G, Mario G

This report presents an unusual case of asymptomatic sialolith of the submandibular gland. A 61-year-old man was referred to our department for multiple extractions. An ortopantomographic exam revealed the existence of a large radiopacity in the right premolar mandibular region. The patient was completely asymptomatic and no episodes of pain and swelling had occurred in the previous years. Ultrasonography and clinical examination confirmed the diagnosis of sialolithiasis of the submandibular duct. The calculus was removed trans-orally in local anaesthesia. The sialolith measured 22 mm and it was mainly constituted by phosphate, calcium and smaller amounts of magnesium. The bacteriological exam revealed the presence of Streptococcus Mitis, Streptococcus Salivarius and non-pathogenic Neisserie. Postoperative course was uneventful. Even a sialolith of significant dimensions may not be symptomatic. Nevertheless, the likelihood of future complications may constitute an indication for surgical removal of abnormal asymptomatic sialoliths.

PMID: 16770196 [PubMed - in process]

A familial hypomagnesemia - hypercalciuria (manz syndrome).

July 22nd, 2006
Related Articles

A familial hypomagnesemia - hypercalciuria (manz syndrome).

J Coll Physicians Surg Pak. 2006 Jun;16(6):428-30

Authors: Akhtar N, Hafeez F, Ahmad TM

We report a case of a rare inherited tubular disorder of linked transport of magnesium and calcium at the level of ascending limb of loop of Henle, characterized by hypomagnesemia, hypercalciuria and nephrocalcinosis, known as “Manz syndrome,” who presented with polyuria, nystagmus and recurrent episodes of tetany with radiological evidence of rickets and nephrocalcinosis.

PMID: 16787625 [PubMed - in process]

The effect of aging on intestinal absorption and status of calcium, magnesium, zinc, and copper in rats: A stable isotope study.

July 22nd, 2006
Related Articles

The effect of aging on intestinal absorption and status of calcium, magnesium, zinc, and copper in rats: A stable isotope study.

J Trace Elem Med Biol. 2006 Jul 12;20(2):73-81

Authors: Coudray C, Feillet-Coudray C, Rambeau M, Tressol JC, Gueux E, Mazur A, Rayssiguier Y

Many investigators have reported changes in mineral status with age but conflicting observations were done concerning mineral absorption. This study was conducted to clarify the effect of aging on intestinal absorption and status of minerals, using a stable isotope approach. To do so, 40 rats of different ages: 9, 22, 44, and 88 weeks were fed with a semi-purified diet for a total of 30 days. At the beginning of the 4th week, the rats received a stable isotope solution containing (44)Ca, (25)Mg, (67)Zn, and (65)Cu. Individual feces and urine were then collected during 4 consecutive days in order to measure stable isotopes by inductively coupled plasma/mass spectrometry (ICP/MS) and blood and tissues were sampled for mineral status determination. Intestinal absorption of (44)Ca and (67)Zn considerably decreased with age, whereas intestinal (25)Mg absorption decreased only moderately and intestinal (65)Cu absorption was unaffected. Plasma and bone calcium (Ca) were not modified with age whereas urinary Ca excretion considerably increased. Plasma and erythrocyte magnesium (Mg) levels were unaffected with age whereas urinary Mg excretion and Mg bone level decreased. Plasma zinc (Zn) level decreased and bone Zn level increased with age whereas red blood cell and liver Zn level and urinary Zn excretion remained unchanged. Plasma Cu level increased with age whereas liver and bone Cu levels and urinary Cu excretion remained unchanged. These results show that the effect of aging on the intestinal mineral absorption and status differ largely according to the mineral considered. Further studies are required under different nutritional conditions to explore the underlying mechanisms during aging and to adjust a better nutrition of the elderly.

PMID: 16785046 [PubMed - as supplied by publisher]

Understanding the drugs used during cardiac arrest response.

July 22nd, 2006
Related Articles

Understanding the drugs used during cardiac arrest response.

Nurs Times. 2006 Jun 6-12;102(23):24-6

Authors: Gallimore D

During cardiac arrest the survival of the patient depends on a rapid response that provides high-quality treatment based on the latest guidelines. Administration of the correct drugs is an important aspect of this process and one in which nurses are taking an increasingly important role. This article will help nurses to understand the use of drugs in cardiac arrest resuscitation, explaining the rationale for their use, the dosage and any significant problems likely to be encountered.

PMID: 16784046 [PubMed - indexed for MEDLINE]

Serum chemistry of free-ranging white whales (Delphinapterus leucas) in Svalbard.

July 22nd, 2006
Related Articles

Serum chemistry of free-ranging white whales (Delphinapterus leucas) in Svalbard.

Vet Clin Pathol. 2006 Jun;35(2):199-203

Authors: Tryland M, Thoresen SI, Kovacs KM, Lydersen C

BACKGROUND: Abnormal physiological conditions and diseases can change the concentrations of enzymes, metabolites, and minerals in the body. Serum chemistry information may thus be indicative of a specific disease; interpretation of such information requires knowledge of serum chemistry reference intervals from a seemingly healthy population of the species. OBJECTIVE: The aim of this study was to obtain serum chemistry reference intervals for a population of white whales. METHODS: Blood samples were collected from 21 free-ranging white whales (beluga; Delphinapterus leucas). The whales were live-captured in nets during 1996-2001 in Storfjorden, Van Mijenfjorden, and Van Keulenfjorden (Svalbard, Norway). While the whales were briefly physically restrained, blood was collected from the caudal vein into vacuum tubes without anticoagulant. The blood was left to clot for 4-6 hours before serum was obtained by centrifugation. The serum samples were then kept at -20 degrees C until analysis. Enzymes (aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase [ALP], creatine kinase, lactate dehydrogenase [LDH], amylase, lipase), metabolites (urea, creatinine, bilirubin, cholesterol, triglycerides, nonesterified fatty acids, glucose), and minerals (calcium, phosphate, magnesium, sodium, potassium, chloride) were analyzed in an Advia 1650 System (Bayer, Tarrytown, NY, USA). Cortisol was analyzed in an Immulite One system (Diagnostic Products Corporation, Los Angeles, CA, USA). The major blood proteins (albumin and globulins) were separated by gel electrophoresis in a Beckman Paragon electrophoresis system (Beckman Coulter, Inc., Fullerton, CA, USA). RESULTS: Serum values for all analytes were reported as median and range, and reference intervals were calculated as 10-90th percentiles. Activities of ALP and LDH and cortisol concentration were higher, and protein and bilirubin concentrations were lower compared with those previously reported for white whales from Canada; remaining results were strikingly similar in these 2 white whale populations. CONCLUSIONS: These data provide valuable serum chemistry reference intervals for future health assessments of white whales in Svalbard and other white whale populations, as well as captive individuals.

PMID: 16783713 [PubMed - in process]

Selected haematological and biochemical parameters of blood in rats after subchronic administration of vanadium and/or magnesium in drinking water.

July 22nd, 2006
Related Articles

Selected haematological and biochemical parameters of blood in rats after subchronic administration of vanadium and/or magnesium in drinking water.

Arch Environ Contam Toxicol. 2006 Aug;51(2):287-95

Authors: Scibior A, Zaporowska H, Ostrowski J

The purpose of these studies was to evaluate the effect of selected vanadium and magnesium doses on certain haematological and biochemical blood parameters in rats. Outbred 2-month-old, albino male Wistar rats received for a period of 6 weeks, as a sole drinking liquid, the following water solutions: group II, sodium metavanadate (SMV) at a concentration of 0.125 mg V/mL; group III, magnesium sulphate (MS) at a concentration of 0.06 mg Mg/mL; and group IV, SMV-MS solution at the same concentrations. The control group received at this time deionized water to drink. It was calculated that group II ingested with drinking water about 10.7 mg V/kg b. w./24 h, group III 6 mg Mg/kg b. w./24 h, and group IV about 9 mg V and 4.5 mg Mg/kg b. w./24 h. The exposure to vanadium alone (group II) led to a statistically significant decrease in body weight gain, food and fluid intakes. Moreover, in the same group of rats a statistically significant decrease in the RBC count, Hb concentration, MCV, and MCH values was demonstrated. Additionally, a statistically significant decrease in the plasma L-ascorbic acid concentration and a significant increase in MDA concentration in blood in this group were found. Instead, after the administration of magnesium alone (group III), a statistically significant decrease in the fluid intake and in the L-ascorbic acid concentration in plasma was noted. Furthermore, in the same group of rats a statistically significant increase in Hb level and in the plasma magnesium concentration was demonstrated. Two-way analysis of variance (ANOVA) did not reveal the interactions between V and Mg.

PMID: 16783625 [PubMed - in process]

Asp302 Determines Potassium Dependence of a RadA Recombinase from Methanococcus voltae.

July 22nd, 2006
Related Articles

Asp302 Determines Potassium Dependence of a RadA Recombinase from Methanococcus voltae.

J Mol Biol. 2006 Jul 14;360(3):537-47

Authors: Qian X, He Y, Wu Y, Luo Y

Archaeal RadA/Rad51 are close homologues of eukaryal Rad51/DMC1. Such recombinases, as well as their bacterial RecA orthologues, form helical nucleoprotein filaments in which a hallmark strand exchange reaction occurs between homologous DNA substrates. Our recent ATPase and structure studies on RadA recombinase from Methanococcus voltae have suggested that not only magnesium but also potassium ions are absorbed at the ATPase center. Potassium, but not sodium, stimulates the ATP hydrolysis reaction with an apparent dissociation constant of approximately 40 mM. The minimal inhibitory effect by 40 mM NaCl further suggests that the protein does not have adequate affinity for sodium. The wild-type protein’s strand exchange activity is also stimulated by potassium with an apparent dissociation constant of approximately 35 mM. We made site-directed mutations at the potassium-contacting residues Glu151 and Asp302. The mutant proteins are expectedly defective in promoting ATP hydrolysis. Similar potassium preference in strand exchange is observed for the E151D and E151K proteins. The D302K protein, however, shows comparable strand exchange efficiencies in the presence of either potassium or sodium. Crystallized E151D filaments reveal a potassium-dependent conformational change similar to what has previously been observed with the wild-type protein. We interpret these data as suggesting that both ATP hydrolysis and DNA strand exchange requires accessibility to an “active” conformation similar to the crystallized ATPase-active form in the presence of ATP, Mg(2+) and K(+).

PMID: 16782126 [PubMed - in process]

Magnesium ion regulation of in vitro rubber biosynthesis by Parthenium argentatum Gray.

July 22nd, 2006
Related Articles

Magnesium ion regulation of in vitro rubber biosynthesis by Parthenium argentatum Gray.

Phytochemistry. 2006 Jun 14;

Authors: da Costa BM, Keasling JD, McMahan CM, Cornish K

Natural rubber is produced by a rubber transferase (a cis-prenyltransferase). Rubber transferase uses allylic pyrophosphate to initiate the rubber molecule and isopentenyl pyrophosphate (IPP) to form the polymer. Rubber biosynthesis also requires a divalent metal cation. Understanding how molecular weight is regulated is important because high molecular weight is required for high quality rubber. We characterized the in vitro effects of Mg(2+) on the biosynthetic rate of rubber produced by an alternative natural rubber crop, Parthenium argentatum (guayule). The affinity of the rubber transferase from P. argentatum for IPP.Mg was shown to depend on the Mg(2+) concentration in a similar fashion to the H. brasiliensis rubber transferase, although to a less extreme degree. Also, in vitro Mg(2+) concentration significantly affects rubber molecular weight of both species, but molecular weight is less sensitive to Mg(2+) concentration in P. argentatum than in H. brasiliensis.

PMID: 16780905 [PubMed - as supplied by publisher]

Early neonatal hypotension in premature infants born to preeclamptic mothers.

July 22nd, 2006
Related Articles

Early neonatal hypotension in premature infants born to preeclamptic mothers.

J Perinatol. 2006 Jun 15;

Authors: Teng RJ, Wu TJ, Sharma R, Garrison RD, Hudak ML

Background:Early neonatal hypotension (ENH) is common in premature infants and has been claimed to occur more frequently in infants born to mothers with severe preeclampsia. Previous studies that showed a relationship between maternal preeclampsia and neonatal hypotension did not control for potential confounding factors such as birth weight and maternal treatment with magnesium sulfate (MgSO(4)).Objective:To determine whether maternal preeclampsia is an independent risk factor for ENH.Study Design:We conducted a retrospective review of all viable singleton infants with gestational age of 23 to 30 weeks who were admitted to the neonatal intensive care unit over a 2-year period. ENH was defined as the persistence of the mean arterial pressure lower than the gestational age in weeks requiring volume expansion and inotropic support in the first 24 h of life.Results:One hundred and eighty four infants were enrolled. Seventy-five (41%) infants met the diagnostic criteria for ENH. Maternal preeclampsia, the presence of labor, maternal treatment with MgSO(4), Apgar scores, birth weight, gestational age and respiratory distress syndrome were significantly associated with ENH by univariate analysis. Only gestational age and maternal preeclampsia were significantly associated with ENH by multiple logistic regression.Conclusion:Gestational age and maternal preeclampsia were independent risk factors for ENH in our population of premature infants.Journal of Perinatology advance online publication, 15 June 2006; doi:10.1038/sj.jp.7211558.

PMID: 16775620 [PubMed - as supplied by publisher]

Agglomeration tendency in dry pharmaceutical granular systems.

July 22nd, 2006
Related Articles

Agglomeration tendency in dry pharmaceutical granular systems.

Eur J Pharm Biopharm. 2006 May 10;

Authors: Lachiver ED, Abatzoglou N, Cartilier L, Simard JS

The agglomeration tendency of dry pharmaceutical mixtures containing various concentrations of Xylitab((R))100 (Xylitol), calcium carbonate precipitated (CCP) and magnesium stearate (MgSt) was evaluated statistically as a function of mixing time. A Ro-Tap tester was employed to mix the three pharmaceutical components, and the agglomerates formed were measured with respect to their weight and size. An experimental design was devised and applied to structure and then statistically analyze the results. Xylitab was found not to be influential in the formation of agglomerates, but aided in deagglomeration when mixed with other components. CCP and MgSt formed agglomerates over time and showed positive interactions favouring agglomeration. The agglomerates started to fracture when they reached a critical size, at which stage the particles’ attraction forces (cohesion forces) were weaker than both gravity and inertia. It has been shown and quantitatively demonstrated that the mixing time and ingredient concentrations of a three-component pharmaceutical mixture can affect agglomeration tendency.

PMID: 16797949 [PubMed - as supplied by publisher]

Rescue treatment and prevention of asthma using magnesium throat lozenges: Hypothesis for a mouth-lung biologically closed electric circuit.

July 22nd, 2006
Related Articles

Rescue treatment and prevention of asthma using magnesium throat lozenges: Hypothesis for a mouth-lung biologically closed electric circuit.

Med Hypotheses. 2006 Jun 22;

Authors: Eby GA

In the rescue treatment of acute asthma, injected and inhalant magnesium are relatively weak having demonstrated value only in severe illness, although theoretical and laboratory considerations suggest that magnesium should be strongly effective as an asthma rescue agent. It was hypothesized that a mouth-lung biologically closed electric circuit (BCEC) exists capable of nearly instantly transporting positively charged magnesium ions from the mouth and throat into the lungs. One hundred milligram magnesium (magnesium chloride) 4-g throat lozenges producing 100+ mM magnesium ion concentration in saliva were tested to determine if they had beneficial effects in asthma rescue and prevention. Subjects were selected based solely on need for asthma rescue, and lozenges were used as needed. Case histories are presented showing the nearly immediate effect of magnesium chloride throat lozenges in terminating and preventing asthma attacks. Throat lozenges containing magnesium chloride produced much more rapid and stronger benefits than has been reported for inhaled and injected magnesium. An added benefit from magnesium chloride lozenge treatment of asthma was relaxation. In this first report of its kind, magnesium chloride throat lozenges appeared to provide rescue benefits in the treatment of asthma equivalent to pharmaceutical asthma drugs. Countering these benefits, strong ionic magnesium solutions greatly increase rhinovirus, herpesvirus and Candida albicans in vitro, and appear to worsen these infections in humans. Magnesium lozenges releasing concentrated magnesium ions appear contraindicated during common colds, oral herpes infections, chronic rhinosinusitis, oral and respiratory infections in general, and their use must immediately be terminated if respiratory or oral symptoms worsen. Double-blind, placebo-controlled, clinical trials in people without respiratory or oral infections are needed to determine magnesium lozenge safety, and the extent by which drug treatment of asthma can be reduced.

PMID: 16797866 [PubMed - as supplied by publisher]

Tacrolimus-associated hypomagnesemia in renal transplant recipients.

July 22nd, 2006
Related Articles

Tacrolimus-associated hypomagnesemia in renal transplant recipients.

Transplant Proc. 2006 Jun;38(5):1320-2

Authors: Navaneethan SD, Sankarasubbaiyan S, Gross MD, Jeevanantham V, Monk RD

BACKGROUND: Since hypomagnesemia occurs frequently in tacrolimus treated patients, we studied the correlation between renal magnesium wasting and tacrolimus blood levels in renal transplant patients. METHODS: Serum magnesium, fractional excretion of magnesium (FEMg), and 24-hour urinary excretion of magnesium were measured in 41 transplant patients and 10 healthy volunteers for correlation with tacrolimus level. RESULTS: Of tacrolimus-treated patients, 43% displayed hypomagnesemia. FEMg (7.42+/-3.59% versus 1.88+/-0.43%) and 24-hour urinary excretion (112.36+/-51.43 mg/dL versus 6.7+/-2.79 mg/dL) were significantly higher among tacrolimus-treated patients than controls. Magnesium replacement did not influence FEMg or 24-hour urinary magnesium excretion. Tacrolimus level was the best predictor of 24-hour urinary magnesium excretion and FEMg. Serum magnesium levels correlated inversely with tacrolimus concentrations and creatinine clearance. CONCLUSION: Hypomagnesemia in renal transplant recipients results from renal magnesium wasting. Tacrolimus levels and renal function impact on the excess renal magnesium excretion. Studies of longer duration are warranted to assess the long-term effects of this early posttransplant hypomagnesemia.

PMID: 16797291 [PubMed - in process]

A woman with red eyes and hypokalemia: A case of acquired Gitelman syndrome.

July 22nd, 2006
Related Articles

A woman with red eyes and hypokalemia: A case of acquired Gitelman syndrome.

Wien Klin Wochenschr. 2006 May;118(7-8):239-242

Authors: Schwarz C, Barisani T, Bauer E, Druml W

Gitelman syndrome is a rare hereditary disorder of the thiazide-sensitive NaCl transporter in the distal renal tubular cells, but mimicking of such hereditary tubular disorders has been described in different autoimmune diseases (Sjögren syndrome, SLE, …). A 62-year-old woman with painful red eyes and sicca syndrome presented at the ophthalmological department. The diagnostic evaluation identified a Sjögren syndrome with early endophthalmitis as the reason for the red eyes. Results of laboratory examination indicated severe hypokalemia, metabolic alkalosis and hypomagnesemia, although this had not been seen years earlier. Together with the urine analysis, a rare case of an acquired Gitelman syndrome was diagnosed. Substitution with potassium and magnesium improved the initial symptoms of weakness, but renal electrolyte wasting persisted even after treatment of Sjögren syndrome. In patients with autoimmune disease, laboratory analysis of serum electrolytes should be performed because different acquired tubular disorders can lead to severe hypokalemia.

PMID: 16794762 [PubMed - as supplied by publisher]

Vascular Action of Cocoa Flavanols in Humans: The Roots of the Story.

July 22nd, 2006
Related Articles

Vascular Action of Cocoa Flavanols in Humans: The Roots of the Story.

J Cardiovasc Pharmacol. 2006 Jun;47 Suppl 2:S99-S102

Authors: K Hollenberg N

Diet patterns are widely recognized as contributors to hypertension. Widely studied potential contributors include intake of sodium, potassium, magnesium, calcium, soluble fiber, omega-3 fatty acids, alcohol, protein, and calories. We add to that list the effect of dietary flavanols present in certain cocoas, which have sufficient activity on vascular nitric oxide to influence blood pressure control. Kuna Indians who live on islands near Panama have little age-related rise in blood pressure or hypertension. On migration to Panama City, blood pressure rises with age, and the frequency of essential hypertension matches urban levels elsewhere. We have identified a specific food that probably makes an important contribution to cardiovascular status. Island-dwelling Kuna drink more than 5 cups of flavanol-rich cocoa per day and incorporate that cocoa into many recipes. Mainland Kuna ingest little cocoa, and what they take is commercially available and flavanol-poor. The flavanol-rich cocoa activates nitric oxide synthase in vitro and in intact humans in the doses that the Kuna employ. Vasodilator responses to flavonoid-rich cocoa are prevented or reversed by the arginine analog, N-nitro-L-arginine methyl ester. Island-dwelling Kuna have a 3-fold larger urinary nitrate:nitrite than do Mainland dwellers. As endothelial dysfunction is central to current thinking on cardiovascular pathophysiology, a food that enhances endothelial function could have broad implications. The list of candidate conditions that might be influenced is impressive, ranging from atherosclerosis and diabetes mellitus to hypertension and preeclampsia, to vascular dementias and end-stage renal disease. The next decade will be interesting.

PMID: 16794463 [PubMed - as supplied by publisher]

Synthesis and characterization of one-dimensional MgO nanostructures.

July 22nd, 2006
Related Articles

Synthesis and characterization of one-dimensional MgO nanostructures.

J Nanosci Nanotechnol. 2006 May;6(5):1447-52

Authors: Kar S, Chaudhuri S

Magnesium oxide (MgO) nanowire arrays, nanoribbons, two- and three-dimensional network like nanostructures were prepared by the simple thermal evaporation of Mg powder with and without using catalyst at a relatively low temperature. The non-catalytic approaches favor the formation of network like nanoforms whereas the catalytic approaches favors the formation of one-dimensional nanowire arrays and quasi one-dimensional nanoribbons depending on the temperature and vapor concentrations of the growth site. The diameter and length of the MgO network like columns varied within 40-50 nm and approximately 200 nm respectively. The MgO nanowires produced by the catalytic approach had diameter within 20-30 nm and length approximately 2 microm. Whereas the widths of the nanoribbons varied within 50-100 nm and their length were of the order of a few hundred micrometers. The nanoforms were single crystalline and cubic in phase. The products were characterized by the X-ray diffraction study, energy dispersive analysis of X-ray study, scanning and transmission electron microscopy, and photoluminescence measurements to explore the structural, compositional, morphological, and physical properties of the MgO nanoforms.

PMID: 16792379 [PubMed - in process]

Determination of magnesium in foods by single-sweep polarography.

July 22nd, 2006
Related Articles

Determination of magnesium in foods by single-sweep polarography.

J AOAC Int. 2006 May-Jun;89(3):782-5

Authors: Xiangchun Z, Lirong W, Yan Z, Guanghan L, Peng Z

In KOH, the Mg(II)-bromopyrogallol red (BPR) complex produced a very sensitive polarographic wave at -1.30 V. The wave height was linear with the concentration of Mg(II) in the range of 0.05 to 2 microg/mL. The detection limit was 0.01 microg/mL. The electrochemical behavior of Mg(II)-BPR was studied by electrochemical and spectrophotometric methods. Experiments proved that the polarographic wave of Mg(II)-BPR was due to the reduction of BPR in the Mg(II)-BPR complex. The method, which was sensitive, selective, and simple to perform, was used to determine magnesium in foods, and the results were consistent with those obtained by atomic absorption spectroscopy.

PMID: 16792076 [PubMed - in process]

Magnesium supplementation in the treatment of dementia patients.

July 22nd, 2006
Related Articles

Magnesium supplementation in the treatment of dementia patients.

Med Hypotheses. 2006 Jun 19;

Authors: Ozturk S, Cillier AE

Alzheimer’s disease is the most common form of dementia. Many risk factors have been defined in the literature, and the roles of environmental factors, nutrition, some vitamins and trace elements have been investigated. The role of magnesium (Mg) in dementia and other degenerative disorders has been the focus of increased attention in recent years. Concentration of Mg affects many biochemical mechanisms, which consist of N-methyl d-aspartate (NMDA) receptor response to excitatory amino acids, stability and viscosity of the cell membrane and toxic effects of calcium. Mg usage with drugs like memantine, which has an influence via Mg, can be useful in dementia treatment. According to the results of these studies, Mg support can facilitate learning and result in improvement in other symptoms. Memantine use has shown some benefit in moderate-to-severe Alzheimer’s disease or for vascular dementia. Mg in the treatment of dementia facilitates learning and contributes to improvement in other symptoms; used in conjunction with memantine it may serve to increase memantine’s symptomatic and neuroprotective effects, via its influence on NMDARs.

PMID: 16790324 [PubMed - as supplied by publisher]

Microradiography as a tool to detect heavy metal uptake in plants for phytoremediation applications.

July 22nd, 2006
Related Articles

Microradiography as a tool to detect heavy metal uptake in plants for phytoremediation applications.

Microsc Res Tech. 2006 Jun 20;

Authors: Reale L, Lai A, Bellucci I, Faenov A, Pikuz T, Flora F, Spanò L, Poma A, Limongi T, Palladino L, Ritucci A, Tomassetti G, Petrocelli G, Martellucci S

In this paper, an application of contact microradiography with soft X-rays for detecting the uptake site of heavy metal in the whole plant leaves is investigated. The X-ray source is a laser-plasma one based on an Nd:glass laser. The soft X-ray radiation emitted from the plasma laser targets of magnesium, iron, and copper can be strongly absorbed in the leaves’ regions rich in iron, magnesium, and copper. This absorbance could point to structures in the leaves where these heavy elements are found. In this work, leaves treated with copper sulfate diluted in water at 1, 2, and 5% were imaged by using a copper target, in order to evaluate differences with untreated control leaves. Our results showed that this methodology highlighted the presence of copper in the treated leaves. This new methodology should detect heavy element pollutants inside plants and it should also be a useful analytic tool in phytoremediation studies. Microsc. Res. Tech., 2006. (c) 2006 Wiley-Liss, Inc.

PMID: 16788990 [PubMed - as supplied by publisher]

Oral magnesium supplementation in asthmatic children: a double-blind randomized placebo-controlled trial.

July 22nd, 2006
Related Articles

Oral magnesium supplementation in asthmatic children: a double-blind randomized placebo-controlled trial.

Eur J Clin Nutr. 2006 Jun 21;

Authors: Gontijo-Amaral C, Ribeiro MA, Gontijo LS, Condino-Neto A, Ribeiro JD

Objective:To investigate the long-term effect of oral magnesium supplementation on clinical symptoms, bronchial reactivity, lung function and allergen-induced skin responses in children and adolescents with moderate persistent asthma.Design:A double-blind randomized parallel placebo-controlled study.Setting and subjects:The patients were recruited from the Pediatric Outpatient Clinic, Division of Pulmonology, Allergy and Immunology, and followed at the Center for Investigation in Pediatrics at State University of Campinas Hospital, Brazil. Thirty-seven out of 72 patients met the study criteria. There were no dropouts.Intervention:The 37 patients (aged 7-19 years, 19 males) were randomized in two groups: magnesium (n=18, 300 mg/day) and placebo (n=19), during 2 months. Both patient groups received inhaled fluticasone (250 mug twice a day) and salbutamol as needed. The primary outcome was bronchial reactivity evaluated with methacholine challenge test (PC20).Results:After a follow-up of 2 months, the methacholine PC20 for testing bronchial reactivity has augmented significantly in the magnesium group only. The skin responses to recognized antigens have also decreased in patients treated with magnesium. The forced vital capacity (FVC), the forced expiratory volume at first second (FEV1), the forced expiratory flow at 25-75 and the FEV1/FVC ratio were similar in both groups. The magnesium group presented fewer asthma exacerbations and used less salbutamol compared to the placebo group.Conclusions:Oral magnesium supplementation helped to reduce bronchial reactivity to methacholine, to diminish their allergen-induced skin responses and to provide better symptom control in pediatric patients with moderate persistent asthma treated with inhaled fluticasone.European Journal of Clinical Nutrition advance online publication, 21 June 2006; doi:10.1038/sj.ejcn.1602475.

PMID: 16788707 [PubMed - as supplied by publisher]

Decolourization of azo dyes using magnesium-palladium system.

July 22nd, 2006
Related Articles

Decolourization of azo dyes using magnesium-palladium system.

J Hazard Mater. 2006 May 12;

Authors: Patel R, Suresh S

Magnesium-palladium system was found to efficiently decolourize reactive black 5, sunset yellow FCF and tartrazine dyes. There is complete loss of visible range absorption peaks and extent of colour removal exceeded 95% within 24h of reaction. There is appearance of new peak(s) in the UV region and/or gradual and significant shift of the lambda(max) in the UV range during 1-24h of reaction of dyes with Mg/Pd system. LC-MS analyses following the reaction of dyes with magnesium palladium system suggest reductive cleavage of azo bonds and formation of amines as the end products. Kinetic analyses of dye decolourization indicate that the reaction follows first order kinetics. Agreement between the experimental and predicted Michaelis-Menten plots for the decolourization of reactive black 5, sunset yellow FCF and tartrazine dyes by Mg(0)/Pd(4+) system, suggests the correctness of Michaelis-Menten model for the prediction of dye decolourization rates by Mg(0)/Pd(4+) system. Our investigations reveal that Mg(0)/K(2)PdCl(6) system is more effective in decolourizing dyes as compared to Mg(0)/Pd(0)-alumina or Mg(0) alone. Results obtained from reuse experiments suggest that Pd(0) pellets have the potential for recycling which will make the treatment process cost effective. Mg(0)/Pd(4+) system was found to be efficient in decolourizing mixture of drimarene, remazol and procion dyes as well as raw effluent generated by textile dye manufacturing company.

PMID: 16787700 [PubMed - as supplied by publisher]

Ventricular tachycardia associated with hereditary magnesium-losing nephropathy.

July 22nd, 2006
Related Articles

Ventricular tachycardia associated with hereditary magnesium-losing nephropathy.

Int J Cardiol. 2006 Jun 22;

Authors: Trung Phan T, Osman F, Jones A, El-Gaylani N

Ventricular tachycardia (VT) can be a life threatening condition which can be caused by an underlying electrolyte disturbance, such as hypomagnesaemia. Causes of electrolyte disturbances, such as magnesium losing nephropathy, should be identified early to allow correct management of the underlying cause of the cardiac arrhythmia.

PMID: 16806539 [PubMed - as supplied by publisher]