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Nutrition: Vitamin B12
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Total 86 results found since Jan 2013.
Choosing the right therapy for a patient with asymptomatic carotid stenosis.
Authors: Bogiatzi C, Azarpazhooh MR, Spence JD
Abstract
Introduction: Most patients with asymptomatic carotid stenosis (ACS) now have a lower risk with intensive medical therapy than with stenting (CAS) or endarterectomy (CEA); the annual risk of stroke or death with intensive medical therapy is ~ 0.5%, vs. a periprocedural risk with CAS of ~ 2.5-4.1% with CAS, and ~ 1.4-1.8% with CEA. The excess risk of CAS is greater in older patients.Areas covered: Discussed are the need for intensive medical therapy, the nature of intensive medical therapy, approaches to identifying the few patients with ACS who could benefit f...
Source: Expert Review of Cardiovascular Therapy - February 12, 2020 Category: Cardiology Tags: Expert Rev Cardiovasc Ther Source Type: research
Effect of Vitamin B12 Levels on the Association Between Folic Acid Treatment and CKD Progression: A Post Hoc Analysis of a Folic Acid Interventional Trial
ConclusionsFolic acid treatment was associated with a greater reduction in the odds of CKD progression among patients with mild to moderate CKD and higher B12 levels.FundingGovernment funding (National Key Research and Development Program of China).
Source: American Journal of Kidney Diseases - October 17, 2019 Category: Urology & Nephrology Source Type: research
One-carbon metabolism supplementation improves outcome after stroke in aged male MTHFR-deficient mice.
This study reveals a critical role for one‑carbon supplementation, with 5-methylTHF, vitamin B12, and choline, in supporting improvement after ischemic stroke damage.
PMID: 31525435 [PubMed - as supplied by publisher]
Source: Neurobiology of Disease - September 12, 2019 Category: Neurology Authors: Jadavji NM, Mosnier H, Kelly E, Lawrence K, Cruickshank S, Stacey S, McCall A, Dhatt S, Arning E, Bottiglieri T, Smith PD Tags: Neurobiol Dis Source Type: research
A New Study Suggests Vegetarians and Vegans Are at Higher Risk of Stroke. But Don ’t Reach for That Steak Just Yet
Vegetarians and vegans are likely to be concerned by the results of a new study with a surprising finding: those following meat-free diets, which are typically associated with better cardiovascular health, may actually have a higher risk of stroke than those who eat meat.
But it’s too soon to run out and order a steak. The paper, published in the BMJ, found only a small increase in the risk of stroke, while confirming findings in other studies that vegetarians and vegans may have a lower risk of heart disease than meat-eaters.
“It’s important to emphasize that we’ve looked at two outcomes here,R...
Source: TIME: Health - September 5, 2019 Category: Consumer Health News Authors: Jamie Ducharme Tags: Uncategorized Diet/Nutrition onetime Source Type: news
Polyneuropathy in Critically Ill Mechanically Ventilated Children: Experience From a Tertiary Care Hospital in North India*
Conclusions:
We observed a high prevalence of critical illness polyneuropathy in children in PICU, mechanically ventilated for 7 days or more; almost all of whom had underlying sepsis.
Source: Pediatric Critical Care Medicine - September 1, 2019 Category: Pediatrics Tags: Neurocritical Care Source Type: research
Partially reversible acute renal cortical necrosis secondary to hyperhomocysteinemia & #8211; A case report and literature review
In conclusion, this is a rare case of ACN, which may have occurred as a complication of hyperhomocysteinemia.
Source: Indian Journal of Nephrology - July 15, 2019 Category: Urology & Nephrology Authors: Wendy Tan Fauzah Abd Ghani Christopher Thiam Seong Lim Source Type: research
Implication of Homocysteine in protein quality control processes.
Abstract
Homocysteine (Hcy) is a key metabolite generated during methionine metabolism. The elevated levels of Hcy in the blood is reffered as hyperhomocystenimeia (HHcy). The HHcy is caused by imapired metabolism/deficiency of either folate, or B12 or defects in Hcy metabolism. Accumulating evidence suggests that HHcy is associated with cardiovascular and brain diseases including atherosclerosis, endothelial injury, and stroke etc. Vitamin B12 (cobalamin; B12) is a water-soluble vitamin essential for two metabolic reactions. It acts as a co-factor for methionine synthase and L-methylmalonyl-CoA mutase. Besides, i...
Source: Biochimie - June 29, 2019 Category: Biochemistry Authors: Reddy VS, Trinath J, Reddy GB Tags: Biochimie Source Type: research
A Novel Homozygous Non-sense Mutation in the Catalytic Domain of MTHFR Causes Severe 5,10-Methylenetetrahydrofolate Reductase Deficiency
Conclusion: We identified a novel non-sense mutation in MTHFR gene in a single Egyptian family with severe MTHFR deficiency. The present investigation is clinically important, as it adds to the growing list of MTHFR mutations, which might help in genetic counseling of families of affected children and proper genotype-phenotype correlation.
Background
Severe 5,10-Methylenetetrahydrofolate reductase (MTHFR; OMIM 236250) deficiency is a rare inborn error of metabolism and inherited in an autosomal recessive fashion. It is a very common disorder of folate metabolism and is clinically characterized with low plasma methion...
Source: Frontiers in Neurology - April 23, 2019 Category: Neurology Source Type: research
Homocysteine and homocysteine-related compounds: an overview of the roles in the pathology of the cardiovascular and nervous systems.
HOMOCYSTEINE AND HOMOCYSTEINE-RELATED COMPOUNDS: AN OVERVIEW OF THE ROLES IN THE PATHOLOGY OF THE CARDIOVASCULAR AND NERVOUS SYSTEMS.
Can J Physiol Pharmacol. 2018 Aug 21;:
Authors: Djuric D, Jakovljevic V, Zivkovic VI, Srejovic IM
Abstract
Homocysteine, sulfhydryl group containing amino acid, is intermediate product during metabolism of the amino acids methionine and cysteine. Hyperhomocysteinema (HHcy) is used as a predictive risk factor for cardiovascular disorders, the stroke progression, screening for inborn errors of Met metabolism, and as a supplementary test for vitamin B12 deficiency. Two org...
Source: Canadian Journal of Physiology and Pharmacology - August 21, 2018 Category: Drugs & Pharmacology Authors: Djuric D, Jakovljevic V, Zivkovic VI, Srejovic IM Tags: Can J Physiol Pharmacol Source Type: research
Vitamin B12.
Abstract
The biosynthesis of B12, involving up to 30 different enzyme-mediated steps, only occurs in bacteria. Thus, most eukaryotes require an external source of B12, and yet the vitamin appears to have only two functions in eukaryotes: as a cofactor for the enzymes methionine synthase and methylmalonylCoA mutase. These two functions are crucial for normal health in humans, and in particular, the formation of methionine is essential for providing methyl groups for over 100 methylation processes. Interference with the methionine synthase reaction not only depletes the body of methyl groups but also leads to the ac...
Source: Advances in Food and Nutrition Research - February 27, 2018 Category: Nutrition Authors: Smith AD, Warren MJ, Refsum H Tags: Adv Food Nutr Res Source Type: research
Lower-extremity Dynamometry as a Novel Outcome Measure in a Double-blind, Placebo-controlled, Feasibility Trial of Intravenous Immunoglobulin (IVIG) for HIV-associated Myelopathy
Conclusion: We conclude that an adequately powered clinical trial of IVIG for HIVM would likely require a prolonged recruitment period and multiple participating sites. Lower limb dynamometry is a useful outcome measure for HIVM, which might also be useful in other HIV-related gait disorders.
KEYWORDS: Dynamometry, intravenous immunoglobulin (IVIG), human immunodeficiency virus (HIV), myelopathy
INTRODUCTION
Human immunodeficiency virus (HIV)-associated myelopathy (HIVM) is a rare but well-described neurologic complication of HIV; it was first described early in the acquired immunodeficiency syndrome (AIDS) epidemic, and i...
Source: Innovations in Clinical Neuroscience - February 1, 2018 Category: Neuroscience Authors: ICN Online Editor Tags: Assessment Tools Current Issue Demyelinating Disease Movement Disorders Neurodegenerative Disease Neurology Original Research Primary Care Technology Trial Methodology Dynamometry human immunodeficiency virus (HIV) intravenous immu Source Type: research
The efficacy of gastrodin in combination with folate and vitamin B12 on patients with epilepsy after stroke and its effect on HMGB-1, IL-2 and IL-6 serum levels.
This study evaluated the efficacy of gastrodin in combination with folate (FOL) and vitamin-B12 (V-B12) on patients with epilepsy after stroke (EAS) and its effect on high-mobility group protein B1 (HMGB-1), interleukin-1 (IL-1), and IL-6 serum levels. The clinical data of 92 EAS patients admitted for treatment between April, 2014 and March, 2016 were collected. These patients were randomly divided into control and observation groups (n=46 each) using computer software. Patients in the control group were administered only regular antiepileptic drugs, whereas observation group patients also received a combination of gastrod...
Source: Experimental and Therapeutic Medicine - December 6, 2017 Category: General Medicine Tags: Exp Ther Med Source Type: research
Hyperhomocysteinemia as a Risk Factor for Saccular Intracranial Aneurysm: A Cohort Study in a Chinese Han Population
We evaluated the possible relationships between serum total homocysteine and folate and Vitamin B12 in patients with intracranial aneurysm.
Source: Journal of Stroke and Cerebrovascular Diseases - September 21, 2017 Category: Neurology Authors: Jin-Rui Ren, Shao-Hua Ren, Bo Ning, Jun Wu, Yong Cao, Xin-Min Ding, Zi-Gang Zhen, Xu-Dong Hao, Shuo Wang Source Type: research
Vitamin B12 Deficiency: Recognition and Management.
Abstract
Vitamin B12 deficiency is a common cause of megaloblastic anemia, various neuropsychiatric symptoms, and other clinical manifestations. Screening average-risk adults for vitamin B12 deficiency is not recommended. Screening may be warranted in patients with one or more risk factors, such as gastric or small intestine resections, inflammatory bowel disease, use of metformin for more than four months, use of proton pump inhibitors or histamine H2 blockers for more than 12 months, vegans or strict vegetarians, and adults older than 75 years. Initial laboratory assessment should include a complete blood count ...
Source: American Family Physician - September 15, 2017 Category: Primary Care Authors: Langan RC, Goodbred AJ Tags: Am Fam Physician Source Type: research
B vitamins in stroke prevention: time to reconsider
This evidence suggests B vitamin therapy that lowers homocysteine levels might reduce stroke risk and this benefit might have been obscured in early trials by increased risk of CV events in subjects with impaired renal function on high-dose cyanocobalamin.
Source: Current Awareness Service for Health (CASH) - August 15, 2017 Category: Consumer Health News Source Type: news
