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https://www.readbyqxmd.com/read/28813122/morphological-alterations-in-the-jejunal-mucosa-of-aged-rats-and-the-possible-protective-role-of-green-tea
#1
Zeinab Abel-Rehim Hassan, Agata Zauszkiewicz-Pawlak, Shaimaa A Abdelrahman, Sami Algaidi, Maha Desouky, Sally M Shalaby
INTRODUCTION: Gastrointestinal disorders become more prevalent with ageing. This study is aimed to describe morphological changes that occur in the jejunal mucosa of male albino rats as a result of ageing and the protective effect of green tea supplements. MATERIAL AND METHODS: The experiment was performed on sixty rats: thirty young-adult (6-month old, body mass 200-220 g) and thirty old (24-month-old, body mass 220-260 g) animals. Each group was further divided into two subgroups (n = 15 each): control rats and green tea-treated rats that received 1...
August 16, 2017: Folia Histochemica et Cytobiologica
https://www.readbyqxmd.com/read/28812980/application-of-an-in-vitro-digestion-model-for-210po-bioaccessibility-assessment-in-seafood
#2
Carla Roselli, Donatella Desideri, Laura Feduzi, Lucia Ugolini, Maria Assunta Meli
This study aims to investigate the bioaccessibility of 210Po in seafood and the impact of food preparation on this radionuclide. Polonium bioaccessibility is the fraction of 210Po mobilized from food matrices into digestive extractants when applying an in vitro digestion model. The degree of bioaccessibility of 210Po in food has important implications for estimating ingestion doses from this radionuclide. The simulation of gastrointestinal digestion was divided into three stages through the use of synthetic saliva, gastric and bile-pancreas solutions...
August 16, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28812582/control-of-intestinal-stem-cell-function-and-proliferation-by-mitochondrial-pyruvate-metabolism
#3
John C Schell, Dona R Wisidagama, Claire Bensard, Helong Zhao, Peng Wei, Jason Tanner, Aimee Flores, Jeffrey Mohlman, Lise K Sorensen, Christian S Earl, Kristofor A Olson, Ren Miao, T Cameron Waller, Don Delker, Priyanka Kanth, Lei Jiang, Ralph J DeBerardinis, Mary P Bronner, Dean Y Li, James E Cox, Heather R Christofk, William E Lowry, Carl S Thummel, Jared Rutter
Most differentiated cells convert glucose to pyruvate in the cytosol through glycolysis, followed by pyruvate oxidation in the mitochondria. These processes are linked by the mitochondrial pyruvate carrier (MPC), which is required for efficient mitochondrial pyruvate uptake. In contrast, proliferative cells, including many cancer and stem cells, perform glycolysis robustly but limit fractional mitochondrial pyruvate oxidation. We sought to understand the role this transition from glycolysis to pyruvate oxidation plays in stem cell maintenance and differentiation...
August 14, 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28812548/bacteroidales-recruit-il-6-producing-intraepithelial-lymphocytes-in-the-colon-to-promote-barrier-integrity
#4
K A Kuhn, H M Schulz, E H Regner, E L Severs, J D Hendrickson, G Mehta, A K Whitney, D Ir, N Ohri, C E Robertson, D N Frank, E L Campbell, S P Colgan
Interactions between the microbiota and distal gut are important for the maintenance of a healthy intestinal barrier; dysbiosis of intestinal microbial communities has emerged as a likely contributor to diseases that arise at the level of the mucosa. Intraepithelial lymphocytes (IELs) are positioned within the epithelial barrier, and in the small intestine they function to maintain epithelial homeostasis. We hypothesized that colon IELs promote epithelial barrier function through the expression of cytokines in response to interactions with commensal bacteria...
August 16, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28812532/spontaneous-experimentally-induced-and-transmissible-aa-amyloidosis-in-japanese-quail-coturnix-japonica
#5
Yumi Nakayama, Junichi Kamiie, Gen Watanabe, Kazuhiko Suzuki, Tomoaki Murakami
The authors describe a spontaneous case of amyloid A (AA) amyloidosis in an adult female Japanese quail ( Coturnix japonica). The bird developed AA amyloidosis secondary to chronic peritonitis caused by a Gram-negative bacillus infection. Mild amyloid deposition was also identified in the intestinal tract of apparently healthy adult individuals, suggesting that quail may develop intestinal amyloidosis with age. Based on these observations, it was hypothesized that quail can develop AA amyloidosis following inflammatory stimulation with lipopolysaccharide (LPS)...
January 1, 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28812344/in-vitro-bile-acid-binding-capacities-of-red-leaf-lettuce-and-cruciferous-vegetables
#6
Isabelle Yang, Guddadarangavvanahal Jayaprakasha, Bhimanagouda S Patil
In the present study, we tested the bile acid binding capacity of red leaf lettuce, red cabbage, red kale, green kale, and Brussels sprouts in vitro digestion process by simulating mouth, gastric, and intestinal digestion using six bile acids at physiological pH. Green and red kale exhibited significantly higher (86.5±2.9 and 89.7±0.9%) bile acid binding capacity compared with the other samples. Further, three different compositions of bile acids were tested to understand the effect on different health conditions...
August 16, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28812170/a-novel-approach-to-utilize-icariin-as-icariin-derived-ecm-on-small-intestinal-submucosa-scaffold-for-bone-repair
#7
Mei Li, Chi Zhang, Yi Zhong, Jiyuan Zhao
Icariin (Ic) has been demonstrated as a potent osteoinductive compound for bone tissue engineering. However, toxic side effects of the drug and poor biocompatibility of drug delivery systems (DDSs) still limit its application for bone repair in the clinic. To overcome these disadvantages and utilize the osteoinductivity of Ic, we developed a novel method to utilize Ic as an Ic-derived osteoinductive extracellular matrix (ECM) on small intestinal submucosa (SIS) (Ic-ECM-SIS). The generated Ic-ECM-SIS scaffolds, as a natural construct, exhibited much better biocompatibility (including cell adhesion, cell survival and cell proliferation) than Ic-SIS scaffolds generated by traditional DDSs...
August 15, 2017: Annals of Biomedical Engineering
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
#8
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/28812000/diagnostic-imaging-features-of-necrotizing-enterocolitis-a-narrative-review
#9
REVIEW
Francesco Esposito, Rosanna Mamone, Marco Di Serafino, Carmela Mercogliano, Valerio Vitale, Gianfranco Vallone, Patrizia Oresta
Necrotizing enterocolitis (NEC) is an inflammatory process, characterized by intestinal necrosis of variable extension, leading to perforation, generalized peritonitis and death. The classical pathogenetic theory focuses on mucosal damage related to a stress induced intestinal ischemia leading to mucosal injury and bacterial colonization of the wall. A more recent hypothesis emphasizes the role of immaturity of gastrointestinal and immune system, particularly of the premature, responsible of bowel wall vulnerability and suffering...
June 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28811850/effect-of-sodium-glucose-cotransporter-2-inhibitors-with-low-sglt2-sglt1-selectivity-on-circulating-glucagon-like-peptide-1-levels-in-type-2-diabetes-mellitus
#10
REVIEW
Kohzo Takebayashi, Toshihiko Inukai
Sodium glucose cotransporter 2 (SGLT2) inhibitors are a new class of antidiabetic drugs that improve glycemic control by inhibiting reabsorption of glucose filtered through the renal glomerulus. Use of drugs in this class has increased because of their effect of decreasing body weight and a low risk for hypoglycemia, in addition to a relatively strong glucose-lowering effect. SGLT2 inhibitors such as canagliflozin and sotagliflozin (a SGLT1/SGLT2 dual inhibitor) also have a mild or moderate intestinal and renal SGLT1 inhibitory effect because of their relatively weak selectivity for SGLT2 over SGLT1...
September 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/28811797/ct-findings-and-features-of-postoperative-abdominal-infection-patients-with-pancreatic-carcinoma
#11
Yuzhuo Ma, Guangsheng Liu, Lingling Zhang
OBJECTIVE: To investigate the values of Computed Tomography (CT) in diagnosing postoperative pancreatic surgeryabdominalinfection and its efficacy and to provide a reasonable method for the diagnosis of abdominal infection. METHODS: Seventy-two patients who were confirmed as resectablepancreatic carcinoma by physical examination, CT, positron emission tomography (PET)/CT, endoscopic retrograde cholangiopancreatography (ER-CP), endoscopic ultrasonography and mesenteric angiography and were admitted to the Binzhou People's Hospital, Shandong, China, from July 2013 to July 2015 were randomly selected...
May 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28811708/involvement-of-crf2-signaling-in-enterocyte-differentiation
#12
Benjamin Ducarouge, Marjolaine Pelissier-Rota, Rebecca Powell, Alain Buisson, Bruno Bonaz, Muriel Jacquier-Sarlin
AIM: To determine the role of corticotropin releasing factor receptor (CRF2) in epithelial permeability and enterocyte cell differentiation. METHODS: For this purpose, we used rat Sprague Dawley and various colon carcinoma cell lines (SW620, HCT8R, HT-29 and Caco-2 cell lines). Expression of CRF2 protein was analyzed by fluorescent immunolabeling in normal rat colon and then by western blot in dissociated colonic epithelial cells and in the lysates of colon carcinoma cell lines or during the early differentiation of HT-29 cells (ten first days)...
July 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28811707/myo-inositol-reduces-%C3%AE-catenin-activation-in-colitis
#13
Emily M Bradford, Corey A Thompson, Tatiana Goretsky, Guang-Yu Yang, Luz M Rodriguez, Linheng Li, Terrence A Barrett
AIM: To assess dietary myo-inositol in reducing stem cell activation in colitis, and validate pβ-catenin(S552) as a biomarker of recurrent dysplasia. METHODS: We examined the effects of dietary myo-inositol treatment on inflammation, pβ-catenin(S552) and pAkt levels by histology and western blot in IL-10(-/-) and dextran sodium sulfate-treated colitic mice. Additionally, we assessed nuclear pβ-catenin(S552) in patients treated with myo-inositol in a clinical trial, and in patients with and without a history of colitis-induced dysplasia...
July 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28811704/gastrointestinal-neuroendocrine-peptides-amines-in-inflammatory-bowel-disease
#14
REVIEW
Magdy El-Salhy, Tefera Solomon, Trygve Hausken, Odd Helge Gilja, Jan Gunnar Hatlebakk
Inflammatory bowel disease (IBD) is a chronic recurrent condition whose etiology is unknown, and it includes ulcerative colitis, Crohn's disease, and microscopic colitis. These three diseases differ in clinical manifestations, courses, and prognoses. IBD reduces the patients' quality of life and is an economic burden to both the patients and society. Interactions between the gastrointestinal (GI) neuroendocrine peptides/amines (NEPA) and the immune system are believed to play an important role in the pathophysiology of IBD...
July 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28811672/an-evaluation-of-the-in-vivo-safety-of-nonporous-silica-nanoparticles-ocular-topical-administration-versus-oral-administration
#15
Martha Kim, Joo-Hee Park, Hyejoong Jeong, Jinkee Hong, Woo Sung Choi, Byung-Han Lee, Choul Yong Park
Nonporous silica nanoparticles (SiNPs) have potential as promising carriers for ophthalmic drugs. However, the in vivo safety of ocular topical SiNPs remains unclear. This study investigated the in vivo safety of oral and ocular topical applications of 100 nm-sized SiNPs in Sprague-Dawley rats. The rats were divided into the following four groups: low-dose oral administration (total 100 mg/kg of SiNPs mixed with food for one week), high-dose oral administration (total 1000 mg/kg of SiNPs mixed with food for one week), ocular topical administration (10 mg/ml concentration, one drop, applied to the right eyes four times a day for one month), or a negative control (no SiNP treatment)...
August 15, 2017: Scientific Reports
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
#16
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/28811479/membrane-free-culture-and-real-time-barrier-integrity-assessment-of-perfused-intestinal-epithelium-tubes
#17
Sebastiaan J Trietsch, Elena Naumovska, Dorota Kurek, Meily C Setyawati, Marianne K Vormann, Karlijn J Wilschut, Henriëtte L Lanz, Arnaud Nicolas, Chee Ping Ng, Jos Joore, Stefan Kustermann, Adrian Roth, Thomas Hankemeier, Annie Moisan, Paul Vulto
In vitro models that better reflect in vivo epithelial barrier (patho-)physiology are urgently required to predict adverse drug effects. Here we introduce extracellular matrix-supported intestinal tubules in perfused microfluidic devices, exhibiting tissue polarization and transporter expression. Forty leak-tight tubules are cultured in parallel on a single plate and their response to pharmacological stimuli is recorded over 125 h using automated imaging techniques. A study comprising 357 gut tubes is performed, of which 93% are leak tight before exposure...
August 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28811343/comparative-genomics-of-escherichia-coli-isolated-from-skin-and-soft-tissue-and-other-extraintestinal-infections
#18
Amit Ranjan, Sabiha Shaik, Nishant Nandanwar, Arif Hussain, Sumeet K Tiwari, Torsten Semmler, Savita Jadhav, Lothar H Wieler, Munirul Alam, Rita R Colwell, Niyaz Ahmed
Escherichia coli, an intestinal Gram-negative bacterium, has been shown to be associated with a variety of diseases in addition to intestinal infections, such as urinary tract infections (UTIs), meningitis in neonates, septicemia, skin and soft tissue infections (SSTIs), and colisepticemia. Thus, for nonintestinal infections, it is categorized as extraintestinal pathogenic E. coli (ExPEC). It is also an opportunistic pathogen, causing cross infections, notably as an agent of zoonotic diseases. However, comparative genomic data providing functional and genetic coordinates for ExPEC strains associated with these different types of infections have not proven conclusive...
August 15, 2017: MBio
https://www.readbyqxmd.com/read/28811235/sodium-butyrate-ameliorates-s100-fca-induced-autoimmune-hepatitis-through-regulation-of-intestinal-tight-junction-and-toll-like-receptor-signaling-pathway
#19
Jin-Lu Wu, Jia-Yun Zou, En-De Hu, Da-Zhi Chen, Lu Chen, Feng-Bin Lu, Lan-Man Xu, Ming-Hua Zheng, Hui Li, Yu Huang, Xiao-Ya Jin, Yue-Wen Gong, Zhuo Lin, Xiao-Dong Wang, Ming-Fang Zhao, Yong-Ping Chen
BACKGROUND AND AIM: Recent investigation revealed that dysbiosis in the gut flora and disruption of permeability of intestinal barrier are possible causes for the development of autoimmune hepatitis. Supplementation of sodium butyrate has been suggested to protect liver injury from disrupted permeability of small intestine. In current study, we employed S100/Freund's complete adjuvant induced autoimmune hepatitis to investigate therapeutic efficacy of sodium butyrate and its mechanism in the liver and upper small intestine...
August 12, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28811222/antitussive-antispasmodic-bronchodilating-and-cardiac-inotropic-effects-of-the-essential-oil-from-blepharocalyx-salicifolius-leaves
#20
Jehison Jiménez Hernández, María Inés Ragone, Patricia Bonazzola, Arnaldo L Bandoni, Alicia E Consolini
ETHOPHARMACOLOGY RELEVANCE: Blepharocalyx salicifolius (Kunth) O. Berg (Myrtaceae) is a tree native to Argentina and Uruguay that grows and is cultivated along the riverside of the Rio de la Plata. The leaves of this plant species, locally known as "anacahuita" are used in South America to prepare infusions for the empiric treatment of cough and bronchospasm, as well as diarrhoea and other intestinal disorders. Although previous phytochemical studies have been performed with the essential oil extracted from Blepharocalyx salicifolius, pharmacological evidence supporting its traditional use is still lacking...
August 12, 2017: Journal of Ethnopharmacology
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