keyword
MENU ▼
Read by QxMD icon Read
search

Vitamin absorption

keyword
https://www.readbyqxmd.com/read/29038891/increase-in-circulating-holotranscobalamin-after-oral-administration-of-cyanocobalamin-or-hydroxocobalamin-in-healthy-adults-with-low-and-normal-cobalamin-status
#1
Eva Greibe, Namita Mahalle, Vijayshri Bhide, Christian W Heegaard, Sadanand Naik, Ebba Nexo
PURPOSE: To investigate the absorption of synthetic cyanocobalamin and natural occurring hydroxocobalamin in populations with low and normal cobalamin (vitamin B12) status. METHODS: We included adults with low (n = 59) and normal (n = 42) cobalamin status and measured the change in serum holotranscobalamin (ΔholoTC) before and after 2 day administration of different doses of cyanocobalamin and hydroxocobalamin (CobaSorb test). In the low status group, the test was performed using a cross-over design with identical doses of both cobalamin forms (1...
October 16, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/29030247/inhibition-of-intestinal-ascorbic-acid-uptake-by-lipopolysaccharide-is-mediated-via-transcriptional-mechanism-s
#2
Veedamali S Subramanian, Subrata Sabui, Hamid Moradi, Jonathan S Marchant, Hamid M Said
Ascorbic acid (AA) accumulation in intestinal epithelial cells is an active transport process mainly mediated by two sodium-dependent vitamin C transporters (SVCT-1 and SVCT-2). To date, little is known about the effect of gut microbiota generated lipopolysaccharide (LPS) on intestinal absorption of water-soluble vitamins. Therefore, the objective of this study was to investigate the effects of bacterially-derived LPS on AA homeostasis in enterocytes using Caco-2 cells, mouse intestine and intestinal enteroids models...
October 10, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29028650/fast-digestive-proteins-and-sarcopenia-of-aging
#3
Yves Boirie, Christelle Guillet
PURPOSE OF REVIEW: The speed of dietary protein digestion influences postprandial amino acid availability which is crucial for improving altered anabolic response of skeletal muscle one feature of sarcopenia during aging. RECENT FINDINGS: By analogy with carbohydrate and in reference to their absorption rate, dietary proteins can be classified as 'fast' or 'slow' proteins depending on matrix food structure and technological processes, which can influence amino acids availability and their subsequent metabolic actions...
October 11, 2017: Current Opinion in Clinical Nutrition and Metabolic Care
https://www.readbyqxmd.com/read/29025082/intestinal-absorption-of-vitamin%C3%A2-d-a-systematic-review
#4
Mariana Costa Silva, Tania Weber Furlanetto
Vitamin D is frequently prescribed as a supplement, yet its absorption remains poorly understood. This systematic review was performed to evaluate data on mechanisms involved in the intestinal absorption of vitamin D. PubMed, Embase, and Cochrane Library databases were searched. The following studies were included: experimental laboratory studies of vitamin D absorption through the enterocyte brush-border membrane; absorption tests that used radiolabeled vitamin D; and clinical trials in adults that investigated a single dose of cholecalciferol or ergocalciferol and reported at least 2 measurements of serum cholecalciferol, ergocalciferol, or 25-hydroxyvitamin D...
August 17, 2017: Nutrition Reviews
https://www.readbyqxmd.com/read/28994849/unexpected-formation-of-gold-nanoflowers-by-a-green-synthesis-method-as-agents-for-a-safe-and-effective-photothermal-therapy
#5
Da-Peng Yang, Xuan Liu, Choon Peng Teng, Cally Owh, Khin Yin Win, Ming Lin, Xian Jun Loh, Yun-Long Wu, Zibiao Li, Enyi Ye
Star fruit (Averrhoa carambola) juice rich in vitamin C and polyphenolic antioxidants was used to synthesize branched gold nanoflowers. These biocompatible and stable gold nanoflowers show strong near-infrared absorption. They are successfully demonstrated to be highly efficient for both in vitro and in vivo photothermal therapy by using an 808 nm laser.
October 10, 2017: Nanoscale
https://www.readbyqxmd.com/read/28973076/effect-of-dietary-supplementation-with-lutein-zeaxanthin-and-%C3%AF-3-on-macular-pigment-a-randomized-clinical-trial
#6
Jean-François Korobelnik, Marie-Bénédicte Rougier, Marie-Noëlle Delyfer, Alain Bron, Bénédicte M J Merle, Hélène Savel, Geneviève Chêne, Cécile Delcourt, Catherine Creuzot-Garcher
Importance: Nutritional uptake of lutein, zeaxanthin, and ω-3 polyunsaturated fatty acids may increase macular pigment optical density (MPOD) and thereby protect against the development of age-related macular degeneration (AMD). Objectives: To estimate the efficiency of dietary supplementation containing lutein, zeaxanthin, ω-3 polyunsaturated fatty acids, and vitamins to increase the density of macular pigment in first-generation offspring of parents with neovascular AMD...
September 28, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28965926/exposure-to-4100k-fluorescent-light-elicits-sex-specific-transcriptional-responses-in-xiphophorus-maculatus-skin
#7
William T Boswell, Mikki Boswell, Dylan J Walter, Kaela L Navarro, Jordan Chang, Yuan Lu, Markita G Savage, Jianjun Shen, Ronald B Walter
It has been reported that exposure to artificial light may affect oxygen intake, heart rate, absorption of vitamins and minerals, and behavioral responses in humans. We have reported specific gene expression responses in the skin of Xiphophorus fish after exposure to ultraviolet light (UV), as well as, both broad spectrum and narrow waveband visible light. In regard to fluorescent light (FL), we have shown that male X. maculatus exposed to 4100K FL (i.e. "cool white") rapidly suppress transcription of many genes involved with DNA replication and repair, chromosomal segregation, and cell cycle progression in skin...
September 28, 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/28965167/laparoscopic-reversal-of-the-biliopancreatic-diversion-with-duodenal-switch-a-step-by-step-video-case
#8
Hamzeh M Halawani, Gintaras Antanavicius
BACKGROUND: Despite the success of the Biliopancreatic Diversion with Duodenal Switch procedure (BPD-DS) in weight loss and comorbidities resolution, reversal of BPD-DS is necessary in 0.2-0.6% of BPD-DS cases for vitamin, protein, and other micronutrient deficiencies. Different techniques are available to reverse the malabsorptive component of the BPD-DS. METHODS: A retrospective chart review for a 37-year-old female patient who presented with lower leg edema and signs of malnutrition 5 years after a BPD/DS...
September 30, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28946499/a-simple-method-for-the-sonochemical-synthesis-of-pva-zro2-vitamin-b1-nanocomposites-morphology-mechanical-thermal-and-wettability-investigations
#9
Shadpour Mallakpour, Elaheh Shafiee
Poly(vinyl alcohol) (PVA) based nanocomposites (NCs) filled by various weight percent of modified ZrO2 nanoparticles (NPs) with vitamin B1 (VB1) up to 7wt% were fabricated via ultrasonication method then was cast to thin films. The ultrasonication was applied for the preparation and modification process asan easy, safe and fast method. Ultrasonic was responsible for great homogeneities of NPs into PVA matrix, which could not be achieved by mechanical or magnetically stirring. The creation of polymer NCs and changes in the structural properties were examined by X-ray diffraction...
January 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28939209/calcium-and-bone-metabolism-indices
#10
Lu Song
Calcium and inorganic phosphate are of critical importance for many body functions, thus the regulations of their plasma concentrations are tightly controlled by the concerted actions of reabsorption/excretion in the kidney, absorption in the intestines, and exchange from bone, the major reservoir for calcium and phosphate in the body. Parathyroid hormone (PTH) and 1,25-dihydroxyvitamin D (1,25(OH)2D) control calcium homeostasis, whereas PTH, 1,25(OH)2D, and bone-derived fibroblast growth factor 23 (FGF 23) control phosphate homeostasis...
2017: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/28938396/transgenic-expression-of-the-vitamin-d-receptor-restricted-to-the-ileum-cecum-and-colon-of-vitamin-d-receptor-knockout-mice-rescues-vitamin-d-receptor-dependent-rickets
#11
Puneet Dhawan, Vaishali Veldurthy, Ghassan Yehia, Connie Hsaio, Angela Porta, Ki-In Kim, Nishant Patel, Liesbet Lieben, Lieve Verlinden, Geert Carmeliet, Sylvia Christakos
Although the intestine plays the major role in 1,25-dihydroxyvitamin D3 (1,25(OH)2D3) action on calcium homeostasis, the mechanisms involved remain incompletely understood. The established model of 1,25(OH)2D3 regulated intestinal calcium absorption postulates a critical role for the duodenum. However it is the distal intestine where 70 -80% of the ingested calcium is absorbed. In order to test directly the role of 1,25(OH)2D3 and the vitamin D receptor (VDR) in the distal intestine, 3 independent knockout (KO) /transgenic (TG) lines expressing VDR exclusively in the ileum, cecum and colon were generated by breeding VDR KO mice with TG mice expressing human (h)VDR under the control of the 9...
September 11, 2017: Endocrinology
https://www.readbyqxmd.com/read/28931466/1-alpha-25-dihydroxyvitamin-d3-up-regulates-the-expression-of-2-types-of-human-intestinal-alkaline-phosphatase-alternative-splicing-variants-in-caco-2-cells-and-may-be-an-important-regulator-of-their-expression-in-gut-homeostasis
#12
Seiko Noda, Asako Yamada, Kanae Nakaoka, Masae Goseki-Sone
Vitamin D insufficiency is associated with a greater risk of osteoporosis and also influences skeletal muscle functions, differentiation, and development. The principal function of vitamin D in calcium homeostasis is to increase the absorption of calcium from the intestine, and the level of alkaline phosphatase (ALP) activity, a differentiation marker for intestinal epithelial cells, is regulated by vitamin D. Intestinal-type ALP is expressed at a high concentration in the brush border membrane of intestinal epithelial cells, and is known to be affected by several kinds of nutrients...
August 4, 2017: Nutrition Research
https://www.readbyqxmd.com/read/28926829/continuous-subcutaneous-recombinant-parathyroid-hormone-1-34-infusion-in-the-management-of-childhood-hypoparathyroidism-associated-with-malabsorption
#13
Vrinda Saraff, Anya Rothenbuhler, Wolfgang Högler, Agnès Linglart
BACKGROUND/AIMS: Hypoparathyroidism associated with malabsorption can be particularly challenging to manage due to limited and erratic intestinal absorption of calcium and vitamin D analogues, resulting in episodes of hypo- or hypercalcaemia. We evaluated the role of continuous subcutaneous recombinant parathyroid hormone (rhPTH 1-34) infusion (CSPI) in children with hypoparathyroidism associated with intestinal malabsorption resistant to conventional therapy. METHOD: Four patients (8-13 years of age), with symptomatic hypocalcaemia resistant to conventional therapy, were started on CSPI (follow-up 3-8 years) in two paediatric endocrinology units in Europe...
September 19, 2017: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/28926730/impact-of-evolocumab-treatment-on-low-density-lipoprotein-cholesterol-levels-in-heterozygous-familial-hypercholesterolemic-patients-withdrawing-from-regular-apheresis
#14
Masa-Aki Kawashiri, Atsushi Nohara, Toshinori Higashikata, Hayato Tada, Chiaki Nakanishi, Hirofumi Okada, Tetsuo Konno, Kenji Sakata, Kenshi Hayashi, Akihiro Inazu, Hiroshi Mabuchi, Masakazu Yamagishi
BACKGROUND AND AIMS: Low-density lipoprotein (LDL) apheresis has been used to treat refractory hyperlipidemia such as familial hypercholesterolemia (FH). Evolocumab, a proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitor used in clinical settings, can reduce LDL cholesterol (LDL-C) levels by >70%. Therefore, this study aimed to assess the impact of evolocumab on withdrawal from regular LDL apheresis in patients with heterozygous FH (HeFH). METHODS: Eleven patients with HeFH undergoing biweekly LDL apheresis were enrolled and were subsequently switched to a biweekly subcutaneous injection of 140 mg of evolocumab...
September 9, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28925645/vitamin-b12-deficiency-recognition-and-management
#15
Robert C Langan, Andrew J Goodbred
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...
September 15, 2017: American Family Physician
https://www.readbyqxmd.com/read/28924437/fundus-findings-in-wernicke-encephalopathy
#16
Tal Serlin, Elad Moisseiev
Wernicke encephalopathy (WE) is an acute neuropsychiatric syndrome resulting from thiamine (vitamin B1) deficiency, classically characterized by the triad of ophthalmoplegia, confusion, and ataxia. While commonly associated with chronic alcoholism, WE may also occur in the setting of poor nutrition or absorption. We present a 37-year-old woman who underwent laparoscopic sleeve gastrectomy and presented with visual disturbance with bilateral horizontal nystagmus, confusion, and postural imbalance. Fundus examination revealed bilateral optic disc edema with a retinal hemorrhage in the left eye...
May 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28921422/high-incidence-of-secondary-hyperparathyroidism-in-bariatric-patients-comparing-different-procedures
#17
Jih-Hua Wei, Wei-Jei Lee, Keong Chong, Yi-Chih Lee, Shu-Chun Chen, Po-Hsun Huang, Shing-Jong Lin
BACKGROUND: Bariatric surgery is an effective therapy for morbid obesity but may reduce calcium absorption and significantly decrease the bone mineral density. This study examined the prevalence of secondary hyperparathyroidism (SHPT) in obese subjects during follow-up after different bariatric surgeries. We investigated predictors of SHPT. METHODS: We enrolled 1470 obese subjects undergoing bariatric/metabolic surgery with at least 1-year follow-up, including 322 patients undergoing Roux-en-Y gastric bypass (RYGB), 695 undergoing single anastomosis (mini-) gastric bypass (SAGB), 93 undergoing laparoscopic adjustable gastric banding (LAGB), and 360 undergoing sleeve gastrectomy (SG)...
September 18, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28916025/oral-manifestations-of-nutritional-disorders
#18
Stanislav N Tolkachjov, Alison J Bruce
Nutritional deficiencies occur when body metabolic requirements are not matched by intake and absorption. Reasons for this discrepancy are numerous, but often social, economic, medical, and even psychiatric factors may play a role. Vitamins and minerals are required for appropriate rapid cell turnover of the oral mucosa. The oral cavity is a unique anatomic environment that may manifest early signs of nutritional disorders as well as other indicators of systemic disease. Knowledge of these oral manifestations and associated findings will allow a practitioner to consider a nutritional disorder when evaluating oral changes and, in turn, initiate appropriate therapy...
September 2017: Clinics in Dermatology
https://www.readbyqxmd.com/read/28915830/biological-effects-of-combined-resveratrol-and-vitamin-d3-on-ovarian-tissue
#19
Francesca Uberti, Vera Morsanuto, Silvio Aprile, Sabrina Ghirlanda, Ian Stoppa, Andrea Cochis, Giorgio Grosa, Lia Rimondini, Claudio Molinari
BACKGROUND: Resveratrol (3,5,4'-trihydroxy-trans-stilbene) is a natural antioxidant polyphenol able to exert a wide range of biological effect on several tissues. Despite its important beneficial properties, it has a low water solubility, which limits its therapeutic applications in humans. Resveratrol also acts as a phytoestrogen that modulates estrogen receptor (ER)-mediated transcription. In addition, it has been shown that ovarian tissues benefit greatly from vitamin D3, which exerts its beneficial effects through VDR receptors...
September 15, 2017: Journal of Ovarian Research
https://www.readbyqxmd.com/read/28914205/vitamin-d-and-depression-the-evidence-from-an-indirect-clue-to-treatment-strategy
#20
Sok Kuan Wong, Kok Yong Chin, Soelaiman Ima-Nirwana
Depression is a common psychiatric disorder that decreases the quality of life and increases the mortality of patients. It incurs significant healthcare costs if left untreated. Even though intervention with antidepressants can reduce depressive symptoms, side effects are often an issue and relapse is very common. Vitamin D, commonly known as the sunshine vitamin, is an essential fat-soluble vitamin for the absorption of calcium to prevent rickets (children) and osteomalacia (adults). Evidence on a possible relationship between vitamin D deficiency and depression is growing...
September 13, 2017: Current Drug Targets
keyword
keyword
30734
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"