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Intestinal absorption

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https://www.readbyqxmd.com/read/28823001/effects-of-fermented-milk-products-on-bone
#1
REVIEW
René Rizzoli, Emmanuel Biver
Fermented milk products like yogurt or soft cheese provide calcium, phosphorus, and protein. All these nutrients influence bone growth and bone loss. In addition, fermented milk products may contain prebiotics like inulin which may be added to yogurt, and provide probiotics which are capable of modifying intestinal calcium absorption and/or bone metabolism. On the other hand, yogurt consumption may ensure a more regular ingestion of milk products and higher compliance, because of various flavors and sweetness...
August 19, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28822847/intestinal-adaptations-following-bariatric-surgery-towards-the-identification-of-new-pharmacological-targets-for-obesity-related-metabolic-diseases
#2
REVIEW
Lara Ribeiro-Parenti, Jean-Baptiste Cavin, Maude Le Gall
Although the gastrointestinal tract is the primary target of bariatric surgery, its contributions to the metabolic changes observed after surgery are still underestimated. Changes in the number of incretin-producing cells could result in the modified hormonal response seen after surgery. Additionally, the rate of absorption and consumption of glucose could contribute to the ameliorated glycaemia. Moreover, decreased intestinal permeability could prevent endotoxemia. Recently, numerous studies have focused on intestinal adaptation following bariatric surgeries...
August 17, 2017: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/28822161/-synergistic-mechanism-of-traditional-chinese-medicine-based-on-target-combination-of-pept1-and-ppar%C3%AE
#3
Lian-Sheng Qiao, Yan-Kun Chen, Gang-Gang Luo, Fang Lu, Si-Jia Liu, Gong-Yu Li, Yan-Ling Zhang
Synergistic effect is main pharmacological mechanism of traditional Chinese medicine(TCM). The research method based on the key targets combination is an important method to explore the synergistic effect of TCM. Peptide transporter 1 (PepT1) is an essential target for drug uptake into the bloodstream, accounting for about 50% of the total transporter protein content from the small intestine. Peroxisome proliferator-activated receptor α(PPARα) is the lipid-lowering target of fibrates, which have a good hypolipidemic effect by activating PPARα...
June 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28821741/predicting-the-murine-enterocyte-metabolic-response-to-diets-that-differ-in-lipid-and-carbohydrate-composition
#4
Neeraj Sinha, Maria Suarez-Diez, Evert M van Schothorst, Jaap Keijer, Vitor A P Martins Dos Santos, Guido J E J Hooiveld
The small intestine serves as gatekeeper at the interface between body and diet and is thought to play an important role in the etiology of obesity and associated metabolic disorders. A computational modelling approach was used to improve our understanding of the metabolic responses of epithelial cells to different diets. A constraint based, mouse-specific enterocyte metabolic model (named mmu_ENT717) was constructed to describe the impact of four fully characterized semi-purified diets, that differed in lipid and carbohydrate composition, on uptake, metabolism, as well as secretion of carbohydrates and lipids...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28820999/absorption-tissue-distribution-metabolism-and-elimination-of-decabrominated-diphenyl-ether-bde-209-in-rats-after-multi-dose-oral-exposure
#5
Xiu-Bo Mi, Lian-Jun Bao, Chen-Chou Wu, Charles S Wong, Eddy Y Zeng
Human and ecological risks of BDE-209 have drawn much attention, particularly with growing e-waste recycling activities in developing countries. To further address the issue of BDE-209 biotransformation, a laboratory-controlled study was conducted. Female Sprague-Dawley rats were dosed orally by gavage at a daily dose of 1 mg kg(-1) body weight for 7 d and a depuration period of 22 d, to characterize absorption, distribution, metabolism, and elimination dynamics of BDE-209 during multi-dose exposures simulating short-term oral exposure of e-waste workers...
August 13, 2017: Chemosphere
https://www.readbyqxmd.com/read/28820081/effects-of-1-5-anhydroglucitol-on-postprandial-blood-glucose-and-insulin-levels-and-hydrogen-excretion-in-rats-and-healthy-humans
#6
Sadako Nakamura, Kenichi Tanabe, Kazuhiro Yoshinaga, Fumio Shimura, Tsuneyuki Oku
The inhibition by 1,5-anhydro-d-glucitol (1,5-AG) was determined on disaccharidases of rats and humans. Then, the metabolism and fate of 1,5-AG was investigated in rats and humans. Although 1,5-AG inhibited about 50 % of sucrase activity in rat small intestine, the inhibition was less than half of d-sorbose. 1,5-AG strongly inhibited trehalase and lactase, whereas d-sorbose inhibited them very weakly. 1,5-AG noncompetitively inhibited sucrase. The inhibition of 1,5-AG on sucrase and maltase was similar between humans and rats...
July 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28819193/experiments-suggesting-extra-digestive-effects-of-enteral-pancreatic-amylase-and-its-peptides-on-glucose-homeostasis-in-a-pig-model
#7
Stefan G Pierzynowski, Kateryna Goncharova, Peter C Gregory, Björn Weström, Sergiy E Podpryatov, Sergii S Podpriatov, Jarosław Woliński, Hlib Repich, Nils Wierup, Liudmyla Lozinska
The studies presented were designed to highlight the impact of pancreatic enzymes on glycemic control and insulin response. Blood glucose and plasma insulin levels were monitored after intravenous, oral or direct gut glucose tolerance tests (GTT) in 6 pigs with an intact gastrointestinal tract and in 12 pigs following duodenal-jejunal bypass (DJB) surgery. In the intact pigs, pancreatic enzymes (Creon®) given orally 1 h prior to the GTT, lowered the blood glucose levels during the oral and meal GTT and reduced the plasma insulin response during the intravenous and meal GTT...
August 17, 2017: Scientific Reports
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
#8
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/28817288/in-silico-modeling-approach-for-the-evaluation-of-gastrointestinal-dissolution-supersaturation-and-precipitation-of-posaconazole
#9
Bart Hens, Shriram M Pathak, Amitava Mitra, Nikunjkumar Patel, Bo Liu, Sanjaykumar Patel, Masoud Jamei, Joachim Brouwers, Patrick Augustijns, David B Turner
The aim of this study was to evaluate gastrointestinal (GI) dissolution, supersaturation, and precipitation of posaconazole, formulated as an acidified (pH 1.6) and neutral (pH 7.1) suspension. A physiologically-based pharmacokinetic (PBPK) modeling and simulation tool was applied to simulate GI and systemic concentration-time profiles of posaconazole which were directly compared with intraluminal and systemic data measured in humans. The Advanced Dissolution Absorption and Metabolism (ADAM) model of the Simcyp® Simulator correctly simulated incomplete gastric dissolution and saturated duodenal concentrations of posaconazole in the duodenal fluids following administration of the neutral suspension...
August 17, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28814193/sirolimus-and-mirabegron-interaction-in-a-hematopoietic-cell-transplant-patient
#10
Jeff A Engle, Christina Fair
Purpose Hematopoietic cell transplant patients are exposed to numerous classes of medications. Transplant practitioners must vigilantly monitor for drug interactions especially involving immunosuppressants. We report a hematopoietic cell transplant patient receiving sirolimus who developed supratherapeutic serum concentrations after initiating mirabegron. Summary A 31-year-old, 98 kg female received a second umbilical cord blood transplant four years after the first transplant for relapsed acute myeloid leukemia...
January 1, 2017: Journal of Oncology Pharmacy Practice
https://www.readbyqxmd.com/read/28812027/l-theanine-administration-modulates-the-absorption-of-dietary-nutrients-and-expression-of-transporters-and-receptors-in-the-intestinal-mucosa-of-rats
#11
Qiongxian Yan, Haiou Tong, Shaoxun Tang, Zhiliang Tan, Xuefeng Han, Chuanshe Zhou
L-theanine has various advantageous functions for human health; whether or not it could mediate the nutrients absorption is unknown yet. The effects of L-theanine on intestinal nutrients absorption were investigated using rats ingesting L-theanine solution (0, 50, 200, and 400 mg/kg body weight) per day for two weeks. The decline of insulin secretion and glucose concentration in the serum was observed by L-theanine. Urea and high-density lipoprotein were also reduced by 50 mg/kg L-theanine. Jejunal and ileac basic amino acids transporters SLC7a1 and SLC7a9, neutral SLC1a5 and SLC16a10, and acidic SLC1a1 expression were upregulated...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28811552/deregulation-of-transcription-factors-controlling-intestinal-epithelial-cell-differentiation-a-predisposing-factor-for-reduced-enteroendocrine-cell-number-in-morbidly-obese-individuals
#12
Bettina K Wölnerhanssen, Andrew W Moran, Galina Burdyga, Anne Christin Meyer-Gerspach, Ralph Peterli, Michael Manz, Miriam Thumshirn, Kristian Daly, Christoph Beglinger, Soraya P Shirazi-Beechey
Morbidly obese patients exhibit impaired secretion of gut hormones that may contribute to the development of obesity. After bariatric surgery there is a dramatic increase in gut hormone release. In this study, gastric and duodenal tissues were endoscopically collected from lean, and morbidly obese subjects before and 3 months after laparoscopic sleeve gastrectomy (LSG). Tissue morphology, abundance of chromogranin A, gut hormones, α-defensin, mucin 2, Na(+)/glucose co-transporter 1 (SGLT1) and transcription factors, Hes1, HATH1, NeuroD1, and Ngn3, were determined...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28810912/inhibition-of-trpm7-suppresses-cell-proliferation-of-colon-adenocarcinoma-in-vitro-and-induces-hypomagnesemia-in-vivo-without-affecting-azoxymethane-induced-early-colon-cancer-in-mice
#13
Junhao Huang, Hideki Furuya, Malika Faouzi, Zheng Zhang, Mahealani Monteilh-Zoller, F Kelly Galbraith Kawabata, David Horgen, Toshihiko Kawamori, Reinhold Penner, Andrea Fleig
BACKGROUND: Magnesium (Mg(2+)) is an essential cation implicated in carcinogenesis, solid tumor progression and metastatic potential. The Transient Receptor Potential Melastatin Member 7 (TRPM7) is a divalent ion channel involved in cellular and systemic Mg(2+) homeostasis. Abnormal expression of TRPM7 is found in numerous cancers, including colon, implicating TRPM7 in this process. METHODS: To establish a possible link between systemic magnesium (Mg(2+)) status, the Mg(2+) conducting channel TRPM7 in colon epithelial cells, and colon carcinogenesis, in vitro whole-cell patch clamp electrophysiology, qPCR, and pharmacological tools were used probing human colorectal adenocarcinoma HT-29 as well as normal primary mouse colon epithelial cells...
August 15, 2017: Cell Communication and Signaling: CCS
https://www.readbyqxmd.com/read/28810527/icariin-combined-with-snailase-shows-improved-intestinal-hydrolysis-and-absorption-in-osteoporosis-rats
#14
Congyan Liu, Xia Gao, Yuping Liu, Mengmeng Huang, Ding Qu, Yan Chen
Icariin has a significant anti-osteoporotic activity, but its clinical application is limited due to a poor oral bioavailability especially under pathological conditions like osteoporosis. Based on the intestinal absorption and metabolism characteristics of icariin in the osteoporosis rats, a kind of simple enteric capsules containing icariin and snailase was designed to overcome this issue in this study. Snailase was secleted as the most efficient exogenous hydrolase of icariin and the related hydrolysis reaction parameters were optimized in the artificial intestinal liquid...
August 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28808890/vitamin-d-activity-and-metabolism-in-bone
#15
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/28805469/long-chain-triglycerides-based-self-nanoemulsifying-oily-formulations-sneofs-of-darunavir-with-improved-lymphatic-targeting-potential
#16
Babita Garg, Sarwar Beg, Ranjot Kaur, Rajendra Kumar, Om Prakash Katare, Bhupinder Singh
The current studies entail systematic development of SNEOFs containing long-chain triglycerides for improving lymphatic targeting of darunavir for complete inhibition of HIV progression. As per QbD-oriented approach for formulation development, the QTPP was defined and CQAs were earmarked. Preformulation equilibrium solubility and phase diagram studies, and risk assessment through FMEA studies identified Lauroglycol 90, Tween 80 and Transcutol HP as the lipid, emulgent and cosolvent, respectively, for formulating SNEOFs of darunavir...
August 14, 2017: Journal of Drug Targeting
https://www.readbyqxmd.com/read/28803922/studying-furosemide-solubilization-using-an-in-vitro-model-simulating-gastrointestinal-digestion-and-drug-solubilization-in-neonates-and-young-infants
#17
Mette Klitgaard, Philip Jonas Sassene, Arzu Selen, Anette Müllertz, Ragna Berthelsen
OBJECTIVE: The aim of the present study was to study the oral performance of furosemide in neonates and young infants using a newly developed in vitro model simulating digestion and drug solubilization in the gastrointestinal (GI) tract of the human neonate and young infant population (age 0-2months). METHODS: The utilized in vitro model was designed to mimic the digestion and drug solubilization processes occurring in the stomach, and the small intestine of the neonate and young infant population, using physiologically relevant media, volumes and digestive enzymes...
August 10, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28803599/invited-review-resource-allocation-mismatch-as-pathway-to-disproportionate-growth-in-farm-animals-prerequisite-for-a-disturbed-health
#18
K Huber
The availability of resources including energy, nutrients and (developmental) time has a crucial impact on productivity of farm animals. Availability of energy and nutrients depends on voluntary feed intake and intestinal digestive and absorptive capacity at optimal feeding conditions. Availability of time is provided by the management in animal production. According to the resource allocation theory, resources have to be allocated between maintenance, ontogenic growth, production and reproduction during lifetime...
August 14, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28802835/residues-in-the-eighth-transmembrane-domain-of-the-proton-coupled-folate-transporter-slc46a1-play-an-important-role-in-defining-the-aqueous-translocation-pathway-and-in-folate-substrate-binding
#19
Srinivas Aluri, Rongbao Zhao, Andras Fiser, I David Goldman
The proton-coupled folate transporter (PCFT-SLC46A1) is required for intestinal folate absorption and folate transport across the choroid plexus. This report addresses the structure/function of the 8th transmembrane helix. Based upon biotinylation of cysteine-substituted residues by MTSEA-biotin, 14 contiguous exofacial residues to Leu316 were accessible to the extracellular compartment of the 23 residues in this helix (Leu303-Leu325). Pemetrexed blocked biotinylation of six Cys-substituted residues deep within the helix implicating an important role for this region in folate binding...
August 9, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28802231/phytochemical-properties-and-pharmacological-effects-of-quercus-ilex-l-aqueous-extract-on-gastrointestinal-physiological-parameters-in-vitro-and-in-vivo
#20
Kaïs Rtibi, Imen Hammami, Slimen Selmi, Dhekra Grami, Hichem Sebai, Mohamed Amri, Lamjed Marzouki
INTRODUCTION: Several research studies have reported on the pharmacological relevance of the medicinal plants used for treating various gastrointestinal disorders and controlling the dietary glucose uptake in the intestinal tract. METHODS: Male rats were used to investigate the pharmacological effects of green oak acorn aqueous extract (GOAE) on gastrointestinal physiological parameters in vivo and in vitro. In this respect, the gastro-intestinal motility and hypersecretion essays were evaluated using a simple test meal (10% charcoal in 5% gum arabic) and castor oil induced diarrhea...
August 9, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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