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B-vitamins

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https://www.readbyqxmd.com/read/29141977/vitamins-associated-with-brain-aging-mild-cognitive-impairment-and-alzheimer-disease-biomarkers-epidemiological-and-experimental-evidence-plausible-mechanisms-and-knowledge-gaps
#1
REVIEW
Michael Fenech
The key to preventing brain aging, mild cognitive impairment (MCI), and Alzheimer disease (AD) via vitamin intake is first to understand molecular mechanisms, then to deduce relevant biomarkers, and subsequently to test the level of evidence for the impact of vitamins in the relevant pathways and their modulation of dementia risk. This narrative review infers information on mechanisms from gene and metabolic defects associated with MCI and AD, and assesses the role of vitamins using recent results from animal and human studies...
November 2017: Advances in Nutrition
https://www.readbyqxmd.com/read/29129471/higher-intake-of-fish-and-fat-is-associated-with-lower-plasma-s-adenosylhomocysteine-a-cross-sectional-study
#2
Mads V Lind, Lotte Lauritzen, Oluf Pedersen, Henrik Vestergaard, Ken D Stark, Torben Hansen, Alastair B Ross, Mette Kristensen
Several B-vitamins act as co-factors in one-carbon metabolism, a pathway that plays a central role in several chronic diseases. However, there is a lack of knowledge of how diet affects markers in one-carbon metabolism. The aim of this study was to explore dietary patterns and components associated with one-carbon metabolites. We hypothesized that intake of whole-grains and fish would be associated with lower Hcy, and higher SAM:SAH ratio due to their nutrient content. We assessed dietary information using a four-day dietary record in 118 men and women with features of the metabolic syndrome...
October 2, 2017: Nutrition Research
https://www.readbyqxmd.com/read/29129284/the-b-vitamin-nutrition-of-insects-the-contributions-of-diet-microbiome-and-horizontally-acquired-genes
#3
REVIEW
Angela E Douglas
Insects generally cannot synthesize eight B vitamins that function as co-enzymes in various required enzymatic reactions. Most insects derive their B vitamin requirements from the diet, microbial symbionts, or a combination of these complementary sources. Exceptionally, the genomes of a few insects bear genes in vitamin B5 (pantothenate) and B7 (biotin) synthesis, horizontally acquired from bacteria. Biomarkers of B vitamin deficiency (e.g. vitamin titers, activity of vitamin-dependent enzymes) offer routes to investigate the incidence and the physiological and fitness consequences of B vitamin deficiency in laboratory and field populations of insects...
October 2017: Current Opinion in Insect Science
https://www.readbyqxmd.com/read/29098943/vitamin-intake-is-associated-with-improved-visuospatial-and-verbal-semantic-memory-in-middle-aged-individuals
#4
Miles Flitton, Ian A Macdonald, Helen M Knight
OBJECTIVES: Factors maintaining cognitive health are still largely unknown. In particular, the cognitive benefits associated with vitamin intake and vitamin supplementation are disputed. We investigated self-reported vitamin intake and serum vitamin levels with performance in cognitive factors sensitive to dementia progression in two large middle-aged general population cohorts. METHODS: Survey data were used to assess regular vitamin intake in 4400 NCDS 1958 and 1177 TwinsUK cohort members, and serum homocysteine and B vitamin levels were measured in 675 individuals from the TwinsUK study...
November 3, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/29098783/associations-of-maternal-nutrition-during-pregnancy-and-post-partum-with-maternal-cognition-and-caregiving
#5
Elizabeth L Prado, Ulla Ashorn, John Phuka, Kenneth Maleta, John Sadalaki, Brietta M Oaks, Marjorie Haskell, Lindsay H Allen, Steve A Vosti, Per Ashorn, Kathryn G Dewey
Pregnant and post-partum women require increased nutrient intake and optimal cognition, which depends on adequate nutrition, to enable reasoning and learning for caregiving. We aimed to assess (a) differences in maternal cognition and caregiving between women in Malawi who received different nutritional supplements, (b) 14 effect modifiers, and (c) associations of cognition and caregiving with biomarkers of iron, Vitamin A, B-vitamin, and fatty acid status. In a randomized controlled trial (n = 869), pregnant women daily received either multiple micronutrients (MMN), 20 g/day lipid-based nutrient supplements (LNS), or a control iron/folic acid (IFA) tablet...
November 2, 2017: Maternal & Child Nutrition
https://www.readbyqxmd.com/read/29097387/neopterin-as-an-effect-modifier-of-the-cardiovascular-risk-predicted-by-total-homocysteine-a-prospective-2-cohort-study
#6
Espen Ø Bjørnestad, Robert A Borsholm, Gard F T Svingen, Eva R Pedersen, Reinhard Seifert, Øivind Midttun, Per M Ueland, Grethe S Tell, Kaare H Bønaa, Ottar Nygård
BACKGROUND: Plasma total homocysteine (tHcy) is related to plasma neopterin, an indicator of interferon-γ-mediated immune activation, and both biomarkers positively predict cardiovascular risk. We examined whether the association between tHcy and subsequent risk of acute myocardial infarction (AMI) was modified by systemic concentrations of neopterin and C-reactive protein among patients with coronary heart disease. METHODS AND RESULTS: By Cox modeling, we explored the association between tHcy and risk of AMI in 4164 patients with suspected stable angina pectoris...
November 2, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29094796/severely-inadequate-micronutrient-intake-among-children-9-24%C3%A2-months-in-nepal-the-mal-ed-birth-cohort-study
#7
Marianne S Morseth, Liv Elin Torheim, Ram K Chandyo, Manjeswori Ulak, Sanjaya K Shrestha, Binob Shrestha, Are Hugo Pripp, Sigrun Henjum
Prevalence of micronutrient deficiencies is high among infants and children in low- and middle income countries, but knowledge about nutrient adequacy across the complementary feeding period is limited. We investigated probability of adequacy (PA) of breast milk and complementary food combined and nutrient density adequacy (NDA) of complementary food and tracking of NDA over time among 229 children from 9-24 months of age in Bhaktapur, Nepal. Monthly, 24 h dietary recalls (16 in total) were performed and subgrouped into four 4-month time periods...
November 2, 2017: Maternal & Child Nutrition
https://www.readbyqxmd.com/read/29083435/dairy-intakes-in-older-irish-adults-and-effects-on-vitamin-micronutrient-status-data-from-the-tuda-study
#8
E Laird, M C Casey, M Ward, L Hoey, C F Hughes, K McCarroll, C Cunningham, J J Strain, H McNulty, A M Molloy
BACKGROUND: Consumption of dairy products has been associated with positive health outcomes including a lower risk of hypertension, improved bone health and a reduction in the risk of type 2 diabetes. The suggested dairy intake for health in older adults is three servings per day but recent analysis of the NHANES data for older adults reported 98% were not meeting these recommendations. No studies have investigated the consequences of such declines in the dairy intakes of Irish older adults and the subsequent effects on vitamin micronutrient status...
2017: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/29077567/dietary-patterns-in-toddlers-with-excess-weight-the-2016-pitnuts-study
#9
Halina Weker, Marta Barańska, Agnieszka Riahi, Małgorzata Strucińska, Małgorzata Więch, Grażyna Rowicka, Hanna Dyląg, Witold Klemarczyk, Agnieszka Bzikowska, Piotr Socha
INTRODUCTION: Children's appropriate dietary pattern determines their optimal development, reduces the risk of childhood diseases and the risk of diet-dependent diseases, including obesity in adulthood. AIM: To analyze the dietary patterns of children with excess weight aged 1-3 years in comparison with the main components of the safe nutrition model including: the organization of meals (frequency of meals), selection of products (food intake), energy and nutritional value of children's diets...
2017: Developmental Period Medicine
https://www.readbyqxmd.com/read/29070711/dietary-b-vitamin-intake-is-associated-with-lower-urinary-monomethyl-arsenic-and-oxidative-stress-marker-15-f2t-isoprostane-among-new-hampshire-adults
#10
Caitlin G Howe, Zhigang Li, Michael S Zens, Thomas Palys, Yu Chen, Jacqueline Y Channon, Margaret R Karagas, Shohreh F Farzan
Background: Arsenic exposure has been associated with an increased risk of cardiovascular disease (CVD). Growing evidence suggests that B vitamins facilitate arsenic metabolism and may protect against arsenic toxicity. However, to our knowledge, few studies have evaluated this in US populations.Objective: Our objective was to examine whether higher B vitamin intake is associated with enhanced arsenic metabolism and lower concentrations of preclinical markers of CVD among New Hampshire adults.Methods: We used weighted quantile sum (WQS) regression to evaluate the collective impact of 6 dietary B vitamins (thiamin, riboflavin, folate, niacin, and vitamins B-6 and B-12) on 1) the proportion of arsenic metabolites in urine and 2) 6 CVD-related markers [including urinary 15-F2t-isoprostane (15-F2t-IsoP)] among 418 participants (26-75 y of age) from the New Hampshire Health Study...
October 25, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/29057689/biotin-for-the-treatment-of-nail-disease-what-is-the-evidence
#11
Shari R Lipner, Richard K Scher
Biotin is a B vitamin that is necessary for several metabolic pathways in humans. As a result of in vitro and animal studies on hooves and claws, it was explored as a treatment for several nail disorders. This review will describe the pharmacology, mechanism of action, and studies using of biotin to treat brittle nails, triangular worn down nails, trachyonychia, and habit tic nail deformity.
October 21, 2017: Journal of Dermatological Treatment
https://www.readbyqxmd.com/read/29053132/-neurotropic-effect-of-b-vitamins-in-the-complex-treatment-of-pain-syndrome
#12
O A Shavlovskaya
Combined vitamin preparations in therapeutic doses are used, along with simple analgesics, nonsteroidal anti-inflammatory drugs (NSAIDs), muscle and epidural blockade, for the relief of acute pain. It is recommended to use the B vitamin preparation neuromultivit. The tablet form of this preparation contains vitamin thiamine hydrochloride (100 mg), pyridoxine hydrochloride (200 mg), cyanocobalamin (0.2 mg), and injectable form includes thiamine hydrochloride (100mg), pyridoxine hydrochloride (100 mg), cyanocobalamin (1 mg)...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/29037490/alzheimer-s-disease-pathogenesis-is-there-a-role-for-folate
#13
REVIEW
Natassia Robinson, Peter Grabowski, Ishtiaq Rehman
Epigenetic modifications, including changes in DNA methylation, have been implicated in a wide range of diseases including neurological diseases such as Alzheimer's. The role of dietary folate in providing methyl groups required for maintenance and modulation of DNA methylation makes it a nutrient of interest in Alzheimer's. Late onset Alzheimer's disease is the most common form of dementia and at present its aetiology is largely undetermined. From epidemiological studies, the interactions between folate, B-vitamins and homocysteine as well as the long latency period has led to difficulties in interpretation of the data, thus current evidence exploring the role of dietary folate in Alzheimer's is contradictory and unresolved...
October 13, 2017: Mechanisms of Ageing and Development
https://www.readbyqxmd.com/read/29035128/prospective-study-of-plasma-homocysteine-its-dietary-determinants-and-risk-of-age-related-macular-degeneration-in-men
#14
William G Christen, Nancy R Cook, Stephanie E Chiuve, Paul M Ridker, J Michael Gaziano
PURPOSE: Cross-sectional and case-control studies generally support a direct association between elevated plasma homocysteine and age-related macular degeneration (AMD), but data from prospective studies are limited. We examined the prospective relation of plasma homocysteine level, its dietary determinants, and risk of AMD in a large cohort of apparently healthy male physicians. METHODS: During a mean follow-up of 11.2 years, we identified 146 incident cases of visually significant AMD (responsible for a reduction of visual acuity to 20/30 or worse), and 146 controls matched for age, smoking status, and time of blood draw...
October 16, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/29027975/dietary-supplement-use-during-preconception-the-australian-longitudinal-study-on-women-s-health
#15
Elle McKenna, Alexis Hure, Anthony Perkins, Ellie Gresham
Worldwide, dietary supplement use among reproductive aged women is becoming increasingly common. The aim of this study was to investigate dietary supplement use among Australian women during preconception. Self-reported data were collected prospectively for the Australian Longitudinal Study on Women's Health (ALSWH). The sample included 485 women aged 31-36 years, with supplement data, classified as preconception when completing Survey 5 of the ALSWH in 2009. Frequency and contingency tables were calculated and Pearson's chi-square test for associations between demographic variables and supplementation status was performed...
October 13, 2017: Nutrients
https://www.readbyqxmd.com/read/29024723/homocysteine-concentrations-in-the-cognitive-progression-of-alzheimer-s-disease
#16
Nicolas Farina, Fredrik Jernerén, Cheryl Turner, Kathryn Hart, Naji Tabet
OBJECTIVES: Hyperhomocysteinemia in Alzheimer's disease (AD) is widely reported and appears to worsen as the disease progresses. While active dietary intervention with vitamins B12 and folate decreases homocysteine blood levels, with promising clinical outcomes in Mild Cognitive Impairment (MCI), this so far has not been replicated in established AD populations. The aim of the study is to explore the relationship between hyperhomocystenemia and relevant vitamins as the disease progresses...
December 1, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28983799/b-vitamin-complex-and-chemotherapy-induced-peripheral-neuropathy
#17
REVIEW
Janet Schloss, Maree Colosimo
PURPOSE OF REVIEW: The purpose of this mini review is to evaluate the literature on B vitamins and chemotherapy-induced peripheral neuropathy. RECENT FINDINGS: One hundred and five journal articles were evaluated and nine manuscripts were included. There was one in vitro, one was an animal and seven were human studies. The in vitro study was a safety study on vitamin B6 and oxaliplatin which was not directly related to CIPN. The animal study evaluated vitamin B3 on paclitaxel administration with positive results...
October 5, 2017: Current Oncology Reports
https://www.readbyqxmd.com/read/28973985/s-adenosylmethionine-and-superoxide-dismutase-1-synergistically-counteract-alzheimer-s-disease-features-progression-in-tgcrnd8-mice
#18
Rosaria A Cavallaro, Vincenzina Nicolia, Maria Teresa Fiorenza, Sigfrido Scarpa, Andrea Fuso
Recent evidence emphasizes the role of dysregulated one-carbon metabolism in Alzheimer's Disease (AD). Exploiting a nutritional B-vitamin deficiency paradigm, we have previously shown that PSEN1 and BACE1 activity is modulated by one-carbon metabolism, leading to increased amyloid production. We have also demonstrated that S-adenosylmethionine (SAM) supplementation contrasted the AD-like features, induced by B-vitamin deficiency. In the present study, we expanded these observations by investigating the effects of SAM and SOD (Superoxide dismutase) association...
September 30, 2017: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28958614/thiamine-and-riboflavin-inhibit-production-of-cytokines-and-increase-the-anti-inflammatory-activity-of-a-corticosteroid-in-a-chronic-model-of-inflammation-induced-by-complete-freund-s-adjuvant
#19
Raquel R Menezes, Adriana M Godin, Felipe Fernandes Rodrigues, Giovanna M E Coura, Ivo S F Melo, Ana Mercy S Brito, Caryne M Bertollo, Tony P Paulino, Milene A Rachid, Renes R Machado, Márcio M Coelho
BACKGROUND: The effects induced by thiamine and riboflavin, isolated or in association with corticosteroids, in models of chronic inflammation are not known. Thus, we evaluated the effect induced by these B vitamins, isolated or in association with dexamethasone, on the mechanical allodynia, paw edema and cytokine production induced by complete Freund's adjuvant (CFA) in rats. METHODS: Chronic inflammation was induced by two injections of CFA. Nociceptive threshold, paw volume and body temperature were evaluated for 21days...
April 23, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28951473/wholly-rickettsia-reconstructed-metabolic-profile-of-the-quintessential-bacterial-parasite-of-eukaryotic-cells
#20
Timothy P Driscoll, Victoria I Verhoeve, Mark L Guillotte, Stephanie S Lehman, Sherri A Rennoll, Magda Beier-Sexton, M Sayeedur Rahman, Abdu F Azad, Joseph J Gillespie
Reductive genome evolution has purged many metabolic pathways from obligate intracellular Rickettsia (Alphaproteobacteria; Rickettsiaceae). While some aspects of host-dependent rickettsial metabolism have been characterized, the array of host-acquired metabolites and their cognate transporters remains unknown. This dearth of information has thwarted efforts to obtain an axenic Rickettsia culture, a major impediment to conventional genetic approaches. Using phylogenomics and computational pathway analysis, we reconstructed the Rickettsia metabolic and transport network, identifying 51 host-acquired metabolites (only 21 previously characterized) needed to compensate for degraded biosynthesis pathways...
September 26, 2017: MBio
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