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Vitamin absorption

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https://www.readbyqxmd.com/read/28818841/distinct-intestinal-adaptation-for-vitamin-b12-and-bile-acid-absorption-revealed-in-a-new-mouse-model-of-massive-ileocecal-resection
#1
Yuka Matsumoto, Wakana Mochizuki, Shintaro Akiyama, Taichi Matsumoto, Kengo Nozaki, Mamoru Watanabe, Tetsuya Nakamura
Ileocecal resection (ICR), one of several types of intestinal resection that results in short bowel syndrome (SBS), causes severe clinical disease in humans. We here describe a mouse model of massive ICR in which 75% of the distal small intestine is removed. We demonstrate that mice underwent 75% ICR show severe clinical signs and high mortality, which may recapitulate severe forms of human SBS, despite an adaptive response throughout the remnant intestine. By using this model, we also investigated whether the epithelium of the remnant intestine shows enhanced expression of factors involved in region-specific functions of the ileum...
August 17, 2017: Biology Open
https://www.readbyqxmd.com/read/28814399/modeling-the-dose-effects-of-soybean-oil-in-salad-dressing-on-carotenoid-and-fat-soluble-vitamin-bioavailability-in-salad-vegetables
#2
Wendy S White, Yang Zhou, Agatha Crane, Philip Dixon, Frits Quadt, Leonard M Flendrig
Background: Previously, we showed that vegetable oil is necessary for carotenoid absorption from salad vegetables. Research is needed to better define the dose effect and its interindividual variation for carotenoids and fat-soluble vitamins.Objective: The objective was to model the dose-response relation between the amount of soybean oil in salad dressing and the absorption of 1) carotenoids, phylloquinone, and tocopherols in salad vegetables and 2) retinyl palmitate formed from the provitamin A carotenoids...
August 16, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28814091/the-effect-of-vitamin-d-on-mcf-7-breast-cancer-cell-metabolism
#3
B Saracligil, B Ozturk, A Unlu, S Abusoglu, G Tekin
The role of vitamin D in calcium absorption and bone health is known. The studies revealed that vitamin D modulates breast cancer cell growth and it is also associated with a reduced breast cancer risk. The primary objective of this study was to highlight the metabolic effect of Vitamin D on MCF-7 breast cancer cell line. For that purpose, we checked the apoptosis, energy, amino-acid and acylcarnitine levels in cancer cells, that the study propose, that 1α, 25(OH)2D3 could inhibit cell growth in a dose and time dependent manner...
2017: Bratislavské Lekárske Listy
https://www.readbyqxmd.com/read/28808890/vitamin-d-activity-and-metabolism-in-bone
#4
REVIEW
Paul H Anderson
PURPOSE OF REVIEW: In addition to the actions of the endocrine hormone, 1alpha,25-dihydroxyvitamin D (1,25(OH)2D) in stimulating intestinal calcium absorption, the regulation of bone mineral metabolism by 1,25(OH)2D is also considered an important contributor to calcium homeostasis. However, recent evidence suggest that 1,25(OH)2D acting either via endocrine or autocrine pathways plays varied roles in bone, which suggests that vitamin D contributes to the maintenance of bone mineral in addition to its catabolic roles...
August 14, 2017: Current Osteoporosis Reports
https://www.readbyqxmd.com/read/28803010/short-communication-apparent-ruminal-synthesis-of-b-vitamins-in-lactating-dairy-cows-fed-saccharomyces-cerevisiae-fermentation-product
#5
D S Castagnino, Y Ying, M S Allen, R Gervais, P Y Chouinard, C L Girard
Apparent ruminal synthesis and duodenal flow of thiamin, riboflavin, niacin, vitamin B6, folates, and vitamin B12 were evaluated in an experiment using 15 ruminally and duodenally cannulated lactating Holstein cows fed a basal diet, according to a crossover design, supplemented or not with 56 g/d of Saccharomyces cerevisiae fermentation product. Duration of the treatment period was 28 d. The basal ration had 28% neutral detergent fber, 30% starch and 16.5% crude protein; forages were corn silage (67% of forage dry matter) and alfalfa silage (33% of forage dry matter)...
August 9, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28763984/solvation-behavior-and-sweetness-response-of-carbohydrates-their-derivatives-and-sugar-alcohols-in-thiamine-hcl-vitamin-b1-and-pyridoxine-hcl-vitamin-b6-at-different-temperatures
#6
Parampaul K Banipal, Mousmee Sharma, Tarlok S Banipal
Volumetric properties are important tools to study the solvation behavior of solutes and reveal valuable information about solute-solute/cosolute interactions. Therefore, standard partial molar volumes at infinite dilution have been calculated from density measurements for monosaccharides, their methoxy and deoxy derivatives, disaccharides and sugar alcohols in (0.05, 0.15, 0.25 and 0.35)molkg(-1) thiamine HCl(aq) and pyridoxine HCl(aq) solutions over temperature range (288.15-318.15)K at pressure, p=0.1MPa...
December 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28761838/topical-therapies-in-psoriasis
#7
REVIEW
R Torsekar, Manjyot M Gautam
Topical therapy as monotherapy is useful in psoriasis patients with mild disease. Topical agents are also used as adjuvant for moderate-to-severe disease who are being concurrently treated with either ultraviolet light or systemic medications. Emollients are useful adjuncts to the treatment of psoriasis. Use of older topical agents such as anthralin and coal tar has declined over the years. However, they are cheaper and can still be used for the treatment of difficult psoriasis refractory to conventional treatment...
July 2017: Indian Dermatology Online Journal
https://www.readbyqxmd.com/read/28761835/evaluation-of-vitamin-d3-and-d2-stability-in-fortified-flat-bread-samples-during-dough-fermentation-baking-and-storage
#8
Mehrnaz Tabibian, Mohammadali Torbati, Mohammad Reza Afshar Mogaddam, Maryam Mirlohi, Malihe Sadeghi, Javad Mohtadinia
Purpose: Vitamin D, a fat-soluble secosteroid, has a significant role in bone metabolism and helps calcium absorption in the body. Since vitamin D concentration is altered in fortified foods and dietary supplements, the actual amount of vitamin D may differ from the label value. Methods: In this study, the concentrations of vitamin D2 and D3 of fortified bread sample were analytically determined. For this purpose, dough or homogenized bread sample was saponified using potassium hydroxide solution (30%, w/v) at 80°C, and the saponified analytes were extracted into n-heptane followed by liquid-liquid extraction...
June 2017: Advanced Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28760087/diabetes-mellitus-induces-alterations-in-metallothionein-protein-expression-and-metal-levels-in-the-testis-and-liver
#9
Yiming Gu, Xin Lian, Weixia Sun, Baoshan Gao, Yaowen Fu
Objective To investigate the effect of diabetes with and without vitamin E treatment on testicular metallothionein (MT) and metal (zinc, copper and iron) changes. Methods Diabetes was induced with a single intraperitoneal injection (i.p.) of streptozotocin in rats, and diabetic rats were given Vitamin E by i.p. every other day for 4 weeks. MT protein was measured by the cadmium-haeme assay and metal levels were detected by an atomic absorption spectrophotometer. Results Diabetes did not change testicular MT protein, but significantly increased hepatic MT protein...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28756618/antioxidant-vitamin-and-mineral-supplements-for-slowing-the-progression-of-age-related-macular-degeneration
#10
REVIEW
Jennifer R Evans, John G Lawrenson
BACKGROUND: It has been proposed that antioxidants may prevent cellular damage in the retina by reacting with free radicals that are produced in the process of light absorption. Higher dietary levels of antioxidant vitamins and minerals may reduce the risk of progression of age-related macular degeneration (AMD). OBJECTIVES: The objective of this review was to assess the effects of antioxidant vitamin or mineral supplementation on the progression of AMD in people with AMD...
July 31, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28747484/a-simple-plasma-retinol-isotope-ratio-method-for-estimating-%C3%AE-carotene-relative-bioefficacy-in-humans-validation-with-the-use-of-model-based-compartmental-analysis
#11
Jennifer Lynn Ford, Joanne Balmer Green, Georg Lietz, Anthony Oxley, Michael H Green
Background: Provitamin A carotenoids are an important source of dietary vitamin A for many populations. Thus, accurate and simple methods for estimating carotenoid bioefficacy are needed to evaluate the vitamin A value of test solutions and plant sources. β-Carotene bioefficacy is often estimated from the ratio of the areas under plasma isotope response curves after subjects ingest labeled β-carotene and a labeled retinyl acetate reference dose [isotope reference method (IRM)], but to our knowledge, the method has not yet been evaluated for accuracy...
July 26, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28739328/a-case-of-oxalate-nephropathy-when-a-single-cause%C3%A2-is%C3%A2-not%C3%A2-crystal-clear
#12
Sofia Marques, Sofia Santos, Kimberly Fremin, Agnes B Fogo
Hyperoxaluria can result in oxalate nephropathy with intratubular calcium oxalate crystallization and acute tubular injury. Primary inherited enzymatic deficiency or secondary causes such as excessive dietary intake, enteric increased absorption, or high doses of vitamin C, which is metabolized to oxalate, may underlie hyperoxaluria and oxalate nephropathy. We report a case of acute kidney injury due to oxalate nephropathy in a patient using chelating therapy with oral ethylenediamine tetra acetic acid (EDTA), intravenous supplementation with vitamin C, and chronic diarrhea and discuss the potential kidney damage these factors can cause in particular settings...
July 21, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28737681/nutrient-and-total-polyphenol-contents-of-dark-green-leafy-vegetables-and-estimation-of-their-iron-bioaccessibility-using-the-in-vitro-digestion-caco-2-cell-model
#13
Francis Kweku Amagloh, Richard Atinpoore Atuna, Richard McBride, Edward Ewing Carey, Tatiana Christides
Dark green leafy vegetables (DGLVs) are considered as important sources of iron and vitamin A. However, iron concentration may not indicate bioaccessibility. The objectives of this study were to compare the nutrient content and iron bioaccessibility of five sweet potato cultivars, including three orange-fleshed types, with other commonly consumed DGLVs in Ghana: cocoyam, corchorus, baobab, kenaf and moringa, using the in vitro digestion/Caco-2 cell model. Moringa had the highest numbers of iron absorption enhancers on an "as-would-be-eaten" basis, β-carotene (14169 μg/100 g; p < 0...
July 22, 2017: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28732571/examining-the-gut-bacteriome-virome-and-mycobiome-in-glucose-metabolism-disorders-are-we-on-the-right-track
#14
REVIEW
Charikleia Stefanaki, Melpomeni Peppa, George Mastorakos, George P Chrousos
Human gut microbiome is defined as the gene complement of the gut microbial community, measured via laboratory metagenomic techniques. It includes bacteriome, virome and mycobiome, which represent, respectively, the assemblages of bacteria, viruses and fungi, living in the human gut. Gut microbiota function as a living "organ" that interacts with the gastro-intestinal environment, provides nutrients and vitamins to the organism and transduces hormonal messages, essentially influencing the main metabolic pathways, including drug metabolism...
August 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28729836/an-overview-of-herbal-products-and-secondary-metabolites-used-for-management-of-type-two-diabetes
#15
REVIEW
Ajda Ota, Nataša P Ulrih
Diabetes mellitus is a common effect of uncontrolled high blood sugar and it is associated with long-term damage, dysfunction, and failure of various organs. In the adult population, the global prevalence of diabetes has nearly doubled since 1980. Without effective prevention and management programs, the continuing significant rise in diabetes will have grave consequences on the health and lifespan of the world population, and also on the world economy. Supplements can be used to correct nutritional deficiencies or to maintain an adequate intake of certain nutrients...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28724883/calcium-prepartions-do-not-inhibit-allergic-reactions-a-randomized-controlled-trial
#16
Klaudia Matysiak, Michał Matuszewski, Wojciech Feleszko
INTRODUCTION    Massive consumption of dietary supplements, including vitamins and minerals, has recently became a serious public issue in Europe. When ingested, they may negatively affect pharmacological activity of various medications, including anti-allergic drugs. Calcium preparations are well-known and commonly used in some European countries as a popular remedy for allergy-related skin reactions, such as itching, erythema and wheals, as well as insect bites. However, their action has not been reliably proven yet...
June 27, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/28716079/the-human-jejunum-has-an-endogenous-microbiota-that-differs-from-those-in-the-oral-cavity-and-colon
#17
Olof H Sundin, Antonio Mendoza-Ladd, Mingtao Zeng, Diana Diaz-Arévalo, Elisa Morales, B Matthew Fagan, Javier Ordoñez, Philip Velez, Nishaal Antony, Richard W McCallum
BACKGROUND: The upper half of the human small intestine, known as the jejunum, is the primary site for absorption of nutrient-derived carbohydrates, amino acids, small peptides, and vitamins. In contrast to the colon, which contains 10(11)-10(12) colony forming units of bacteria per ml (CFU/ml), the normal jejunum generally ranges from 10(3) to 10(5) CFU per ml. Because invasive procedures are required to access the jejunum, much less is known about its bacterial microbiota. Bacteria inhabiting the jejunal lumen have been investigated by classical culture techniques, but not by culture-independent metagenomics...
July 17, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28710526/exposure-effects-and-absorption-of-lead-in-american-woodcock-scolopax-minor-a-review
#18
REVIEW
Amanda D French, Warren C Conway, Jaclyn E Cañas-Carrell, David M Klein
Due to long term declines of American Woodcock (Scolopax minor) and widespread distribution of environmentally available lead (Pb) throughout their geographic range, it is important to assess if Pb exposure is a potential contributor to these declines. Woodcock are exposed to Pb through various environmental sources and are known to exhibit relatively high bone-Pb concentrations. Absorption of Pb by birds, and woodcock specifically, is not well understood. Some studies show that interactions among calcium, phosphorus, iron, zinc, and vitamin D levels may play an important role in Pb absorption...
July 14, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28704538/intestinal-calcium-and-bile-salts-facilitate-germination-of-clostridium-difficile-spores
#19
Travis J Kochan, Madeline J Somers, Alyssa M Kaiser, Michelle S Shoshiev, Ada K Hagan, Jessica L Hastie, Nicole P Giordano, Ashley D Smith, Alyxandria M Schubert, Paul E Carlson, Philip C Hanna
Clostridium difficile (C. difficile) is an anaerobic gram-positive pathogen that is the leading cause of nosocomial bacterial infection globally. C. difficile infection (CDI) typically occurs after ingestion of infectious spores by a patient that has been treated with broad-spectrum antibiotics. While CDI is a toxin-mediated disease, transmission and pathogenesis are dependent on the ability to produce viable spores. These spores must become metabolically active (germinate) in order to cause disease. C. difficile spore germination occurs when spores encounter bile salts and other co-germinants within the small intestine, however, the germination signaling cascade is unclear...
July 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28702423/food-ingredients-that-inhibit-cholesterol-absorption
#20
REVIEW
Elliot D Jesch, Timothy P Carr
Cholesterol is a vital component of the human body. It stabilizes cell membranes and is the precursor of bile acids, vitamin D and steroid hormones. However, cholesterol accumulation in the bloodstream (hypercholesterolemia) can cause atherosclerotic plaques within artery walls, leading to heart attacks and strokes. The efficiency of cholesterol absorption in the small intestine is of great interest because human and animal studies have linked cholesterol absorption with plasma concentration of total and low density lipoprotein cholesterol...
June 2017: Preventive Nutrition and Food Science
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