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Vitamin B1

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https://www.readbyqxmd.com/read/27928126/when-was-b1-the-first-vitamin-discovered-an-alternative-perspective
#1
Shozo Sugiura
No abstract text is available yet for this article.
2016: Journal of Nutritional Science and Vitaminology
https://www.readbyqxmd.com/read/27920295/a-novel-transcriptional-regulator-related-to-thiamine-phosphate-synthase-controls-thiamine-metabolism-genes-in-archaea
#2
Dmitry A Rodionov, Semen A Leyn, Xiaoqing Li, Irina A Rodionova
: Thiamine (vitamin B1) is a precursor of thiamine pyrophosphate (TPP), an essential coenzyme in the central metabolism of all living organisms. Bacterial thiamin biosynthesis and salvage genes are controlled at the RNA level by TPP-responsive riboswitches. In Archaea, TPP riboswitches are restricted to the Thermoplasmatales order. Mechanisms of transcriptional control of thiamine genes in other archaeal lineages remain unknown. Using the comparative genomics approach, we identified a novel family of transcriptional regulators (named ThiR) controlling thiamine biosynthesis and transport genes in diverse lineages from the Crenarchaeota phylum, as well as in the Halobacteria and Thermococci classes of the Euryarchaeota ThiR regulators are composed of an N-terminal DNA-binding domain and a C-terminal ligand-binding domain that is similar to the archaeal thiamin phosphate synthase ThiN...
December 5, 2016: Journal of Bacteriology
https://www.readbyqxmd.com/read/27898998/nutritional-supplementation-for-hip-fracture-aftercare-in-older-people
#3
REVIEW
Alison Avenell, Toby O Smith, James P Curtain, Jenson Cs Mak, Phyo K Myint
BACKGROUND: Older people with hip fractures are often malnourished at the time of fracture, and subsequently have poor food intake. This is an update of a Cochrane review first published in 2000, and previously updated in 2010. OBJECTIVES: To review the effects (benefits and harms) of nutritional interventions in older people recovering from hip fracture. SEARCH METHODS: We searched the Cochrane Bone, Joint and Muscle Trauma Group Specialised Register, CENTRAL, MEDLINE, MEDLINE In-Process & Other Non-Indexed Citations, Embase, CAB Abstracts, CINAHL, trial registers and reference lists...
November 30, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27889885/investigating-factors-involved-in-post-laparoscopic-sleeve-gastrectomy-lsg-neuropathy
#4
Almaha Alsabah, Salman Al Sabah, Suleiman Al-Sabah, Ahmad Al-Serri, Eliana Al Haddad, Waleed M Renno
BACKGROUND: Laparoscopic sleeve gastrectomy (LSG) has gained popularity as the leading bariatric procedure for the treatment of morbid obesity. Due to the rising numbers of bariatric surgeries, neurologic complications have become increasingly recognized. Our aim was to examine biochemical and hormonal factors that are associated with neuropathy post-LSG. METHODS: Thirty-two patients were included: 16 patients with neuropathy in the neuropathic group (NG) and 16 patients without neuropathy in the control group (CG)...
November 26, 2016: Obesity Surgery
https://www.readbyqxmd.com/read/27882183/psychiatric-symptoms-and-limb-tremors-associated-with-central-pontine-myelinolysis-a-case-of-alcoholism-without-hyponatremia
#5
Xue-Min Feng, Teng Zhao, Chun-Kui Zhou, Jing-Yao Liu
Central pontine myelinolysis (CPM), also known as osmotic demyelination syndrome, is a rare demyelinating disorder characterized by the loss of myelin in the center of the basis pontis. In this case report, an alcoholic patient with CPM and acquired demyelinating lesion of the basis pontis is described. The patient is a 70 year-old woman who presented with intermittent psychiatric symptoms and limb tremors following two months of alcohol abuse. During admission, magnetic resonance imaging (MRI) revealed hyperintensity on T2 weighted images and fluid-attenuated inversion-recovery imaging in the central pons without contrast enhancement...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27880016/binuclear-copper-complex-catalysed-reactions-relay-aerobic-oxidation-of-n-aryltetrahydroisoquinolines-to-dihydroisoquinolones-with-a-vb1-analogue
#6
Yuxia Liu, Chao Wang, Dong Xue, Miao Xiao, Jiao Liu, Chaoqun Li, Jianliang Xiao
N-aryltetrahydroisoquinolines were oxidised to dihydroisoquinolones through the relay catalysis of a binuclear paddle-wheel copper complex and a vitamin B1 analogue with oxygen as oxidant. Mechanistic studies revealed that the copper catalyst oxidises amines to the corresponding iminium salts, which were then oxygenated to lactam products by the catalysis of the vitamin B1 analogue.
November 23, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27872694/long-term-treatment-by-vitamin-b1-and-reduction-of-serum-proinflammatory-cytokines-hyperalgesia-and-paw-edema-in-adjuvant-induced-arthritis
#7
Jalal Zaringhalam, Akhtar Akbari, Alireza Zali, Homa Manaheji, Vida Nazemian, Mahdi Shadnoush, Somayeh Ezzatpanah
INTRODUCTION: Immune system is involved in the etiology and pathophysiology of inflammation and vitamins are important sources of substances inducing nonspecific immunomodulatory effects. Given the proinflammatory role of cytokines in the inflammation and pain induction, this study aimed to assess the effects of long-term administration of vitamin B1 on the proinflammatory cytokines, edema, and hyperalgesia during the acute and chronic phases of adjuvant-induced arthritis. METHODS: On the first day of study, inflammation was induced by intraplantar injection of complete Freund's adjuvant (CFA) in the hindpaws of rats...
October 2016: Basic and Clinical Neuroscience
https://www.readbyqxmd.com/read/27869793/lyme-disease-spirochaete-borrelia-burgdorferi-does-not-require-thiamin
#8
Kai Zhang, Jiang Bian, Yijie Deng, Alexis Smith, Roy E Nunez, Michael B Li, Utpal Pal, Ai-Ming Yu, Weigang Qiu, Steven E Ealick, Chunhao Li
Thiamin pyrophosphate (ThDP), the active form of thiamin (vitamin B1), is believed to be an essential cofactor for all living organisms(1,2). Here, we report the unprecedented result that thiamin is dispensable for the growth of the Lyme disease pathogen Borrelia burgdorferi (Bb)(3). Bb lacks genes for thiamin biosynthesis and transport as well as known ThDP-dependent enzymes(4), and we were unable to detect thiamin or its derivatives in Bb cells. We showed that eliminating thiamin in vitro and in vivo using BcmE, an enzyme that degrades thiamin, has no impact on Bb growth and survival during its enzootic infectious cycle...
November 21, 2016: Nature Microbiology
https://www.readbyqxmd.com/read/27866256/surfactant-free-microemulsion-electrokinetic-chromatography-sf-meekc-with-uv-and-ms-detection-a-novel-approach-for-the-separation-and-esi-ms-detection-of-neutral-compounds
#9
Urška Mohorič, Andrea Beutner, Sebastian Krickl, Didier Touraud, Werner Kunz, Frank-Michael Matysik
Microemulsion electrokinetic chromatography (MEEKC) is a powerful tool to separate neutral species based on differences in their hydrophobic and hydrophilic properties. However, as a major drawback the conventionally used SDS based microemulsions are not compatible with electrospray ionization mass spectrometry (ESI-MS). In this work, a surfactant-free microemulsion (SFME) consisting of water, ethanol, and 1-octanol is used for surfactant-free microemulsion electrokinetic chromatography (SF-MEEKC). Ammonium acetate was added to the SFME enabling electrophoretic separations...
December 2016: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/27857755/can-long-term-thiamine-treatment-improve-the-clinical-outcomes-of-myotonic-dystrophy-type-1
#10
Antonio Costantini, Erika Trevi, Maria Immacolata Pala, Roberto Fancellu
Myotonic dystrophy type 1, also known as Steinert's disease, is an autosomal dominant disorder with multisystemic clinical features affecting the skeletal and cardiac muscles, the eyes, and the endocrine system. Thiamine (vitamin B1) is a cofactor of fundamental enzymes involved in the energetic cell metabolism; recent studies described its role in oxidative stress, protein processing, peroxisomal function, and gene expression. Thiamine deficiency is critical mainly in the central and peripheral nervous system, as well as in the muscular cells...
September 2016: Neural Regeneration Research
https://www.readbyqxmd.com/read/27856242/1-25-oh-2d3-induced-interaction-of-vitamin-d-receptor-with-p50-subunit-of-nf-%C3%AE%C2%BAb-suppresses-the-interaction-between-klf5-and-p50-contributing-to-inhibition-of-lps-induced-macrophage-proliferation
#11
Dong Ma, Ruo-Nan Zhang, Ya Wen, Wei-Na Yin, Disi Bai, Guo-Ying Zheng, Jin-Shui Li, Bin Zheng, Jin-Kun Wen
KLF5 and nuclear factor κB (NF-κB) regulate cell proliferation and inflammation. Vitamin D signaling through vitamin D receptor (VDR) exerts anti-proliferative and anti-inflammatory actions. However, an actual relationship between KLF5, NF-κB and VDR in the inflammation and proliferation of macrophages is still unclear. Here, we showed that LPS and proinflammatory cytokines stimulate KLF5 gene expression in macrophages, and that 1, 25(OH)2D3 suppresses LPS-induced KLF5 expression and cell proliferation via upregulation of VDR expression...
November 14, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27825907/thiamine-and-benfotiamine-improve-cognition-and-ameliorate-gsk-3%C3%AE-associated-stress-induced-behaviours-in-mice
#12
Nataliia Markova, Nataliia Bazhenova, Daniel C Anthony, Julie Vignisse, Andrey Svistunov, Klaus-Peter Lesch, Lucien Bettendorff, Tatyana Strekalova
Thiamine (vitamin B1) deficiency in the brain has been implicated in the development of dementia and symptoms of depression. Indirect evidence suggests that thiamine may contribute to these pathologies by controlling the activities of glycogen synthase kinase (GSK)-3β. While decreased GSK-3β activity appears to impair memory, increased GSK-3β activity is associated with the distressed/depressed state. However, hitherto direct evidence for the effects of thiamine on GSK-3β function has not been reported...
November 4, 2016: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/27818067/-thiamine-vitamin-b1-treatment-in-patients-with-alcohol-dependence
#13
Alain Dervaux, Xavier Laqueille
Thiamine deficiency (vitamin B1) is common in patients with alcohol dependence. Cognitive impairments may be an early consequence of thiamine deficiency. Wernicke's encephalopathy is underdiagnosed and undertreated. In patients with established Wernicke's encephalopathy, parenteral thiamine 200-500mg three times a day should be given for 3-5 days, followed by oral thiamine 250-1000mg/day. In patients with suspected Wernicke's encephalopathy, parenteral thiamine 250-300mg should be given two times a day for 3-5 days, followed by oral thiamine 250-300mg/day...
November 3, 2016: La Presse Médicale
https://www.readbyqxmd.com/read/27799239/effectiveness-of-complementary-food-supplements-and-dietary-counselling-on-anaemia-and-stunting-in-children-aged-6-23-months-in-poor-areas-of-qinghai-province-china-a-controlled-interventional-study
#14
Yanfeng Zhang, Qiong Wu, Wei Wang, Michelle Helena van Velthoven, Suying Chang, Huijun Han, Min Xing, Li Chen, Robert W Scherpbier
OBJECTIVE: To assess the effectiveness of dietary counselling and complementary food supplements on anaemia and stunting prevalence in children aged 6-23 months. DESIGN: A controlled intervention study with measurements of height and haemoglobin levels, and cross-sectional surveys in August 2012 (baseline), 2013 (mid-term) and 2014 (end-line). SETTING: One intervention county and one control county in rural Qinghai Province, China. INTERVENTION: Complementary food supplements (containing protein, fat, carbohydrate, vitamin A, B1, B2, B12, D3, folic acid, iron, zinc and calcium) and complementary feeding counselling were given in the intervention county...
October 31, 2016: BMJ Open
https://www.readbyqxmd.com/read/27799085/atheroprotective-effects-of-pure-tocotrienol-supplementation-in-the-treatment-of-rabbits-with-experimentally-induced-early-and-established-atherosclerosis
#15
Thuhairah Abdul Rahman, Noor Faezah Hassim, Nurmazni Zulkafli, Suhaila Muid, Noor Kaslina Kornain, Hapizah Nawawi
BACKGROUND: Atherosclerosis is the main cause of coronary artery disease -related deaths worldwide. The atheroprotective properties of pure tocotrienols (T3) in the absence of alpha-tocopherol (α-TCP) in vitamin E has not been extensively examined. AIM: To determine the atheroprotective properties of T3 in early and established atherosclerosis rabbits. METHODS: Thirty New Zealand white rabbits were divided into two groups, B1 and B2 which represent early [fed 1% high cholesterol diet (HCD) for 2 weeks] and established (fed 1% HCD for 8 weeks) atherosclerosis...
2016: Food & Nutrition Research
https://www.readbyqxmd.com/read/27792245/malnutrition-and-risk-of-structural-brain-changes-seen-on-magnetic-resonance-imaging-in-older-adults
#16
Marian A E de van der Schueren, Sabine Lonterman-Monasch, Wiesje M van der Flier, Mark H Kramer, Andrea B Maier, Majon Muller
OBJECTIVES: To study the associations between protein energy malnutrition, micronutrient malnutrition, brain atrophy, and cerebrovascular lesions. DESIGN: Cross-sectional. SETTING: Geriatric outpatient clinic. PARTICIPANTS: Older adults (N = 475; mean age 80 ± 7). MEASUREMENTS: Nutritional status was assessed using the Mini Nutritional Assessment (MNA) and according to serum micronutrient levels (vitamins B1, B6, B12, D; folic acid)...
October 28, 2016: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/27785373/comparison-of-the-action-of-diclofenac-alone-versus-diclofenac-plus-b-vitamins-on-mobility-in-patients-with-low-back-pain
#17
Mauro Geller, Marco Antonio Mibielli, Carlos Pereira Nunes, Adenilson de Souza da Fonseca, Stephanie Wrobel Goldberg, Lisa Oliveira
Objective: To assess results of the finger-to-floor distance (FFD) and the Schober test performed during the DOLOR study, and to verify correlation between Visual Analog Pain Scale scores (VAS) with these measures. Research design and methods: Previously tabulated data from the Clinical Research Forms of the DOLOR study were analyzed (statistical significance defined with a two-tailed p value < 0.05 and confidence interval of 95%). For continuous variables, the Student's T- test or analysis of variance (ANOVA) was used, and differences between pre-treatment and Visits 2, 3, and 4 in the absolute number and percentage of patients with no change, improvement, or worsening of the Schober test and the FFD test scores were calculated, and the results were analyzed with the Chi-squared test...
2016: Journal of drug assessment
https://www.readbyqxmd.com/read/27738876/colorimetry-as-quality-control-tool-for-individual-inkjet-printed-pediatric-formulations
#18
Henrika Wickström, Johan O Nyman, Mathias Indola, Heidi Sundelin, Leif Kronberg, Maren Preis, Jukka Rantanen, Niklas Sandler
Printing technologies were recently introduced to the pharmaceutical field for manufacturing of drug delivery systems. Printing allows on demand manufacturing of flexible pharmaceutical doses in a personalized manner, which is critical for a successful and safe treatment of patient populations with specific needs, such as children and the elderly, and patients facing multimorbidity. Printing of pharmaceuticals as technique generates new demands on the quality control procedures. For example, rapid quality control is needed as the printing can be done on demand and at the point of care...
October 13, 2016: AAPS PharmSciTech
https://www.readbyqxmd.com/read/27721697/differential-control-efficacies-of-vitamin-treatments-against-bacterial-wilt-and-grey-mould-diseases-in-tomato-plants
#19
Jeum Kyu Hong, Hyeon Ji Kim, Heesoo Jung, Hye Ji Yang, Do Hoon Kim, Chang Hyun Sung, Chang-Jin Park, Seog Won Chang
Bacterial wilt and grey mould in tomato plants are economically destructive bacterial and fungal diseases caused by Ralstonia solanacearum and Botrytis cinerea, respectively. Various approaches including chemical and biological controls have been attempted to arrest the tomato diseases so far. In this study, in vitro growths of bacterial R. solanacearum and fungal B. cinerea were evaluated using four different vitamins including thiamine (vitamin B1), niacin (vitamin B3), pyridoxine (vitamin B6), and menadione (vitamin K3)...
October 2016: Plant Pathology Journal
https://www.readbyqxmd.com/read/27716664/normal-vitamin-levels-and-nutritional-indices-in-alzheimer-s-disease-patients-with-mild-cognitive-impairment-or-dementia-with-normal-body-mass-indexes
#20
Ingun Ulstein, Thomas Bøhmer
Evidence supports an association between vitamin deficiencies and cognitive decline in Alzheimer's disease (AD). If vitamin deficiencies are causative for AD development, they should be detectable during very early stages of AD. Here we investigated nutritional factors among home-living patients diagnosed with mild cognitive impairment (MCI) or mild dementia due to AD, compared to healthy controls. Our study included 73 patients with AD (25 with MCI, 48 with dementia) and 63 cognitively intact age-matched controls...
October 5, 2016: Journal of Alzheimer's Disease: JAD
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