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Intestinal Motility

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https://www.readbyqxmd.com/read/28915552/dicer-suppresses-cytoskeleton-remodeling-and-tumorigenesis-of-colorectal-epithelium-by-mir-324-5p-mediated-suppression-of-hmgxb3-and-wasf-2
#1
Li Na Sun, Cheng Xing, Zheng Zhi, Yao Liu, Liang-Yan Chen, Tong Shen, Qun Zhou, Yu Hong Liu, Wen Juan Gan, Jing-Ru Wang, Yong Xu, Jian Ming Li
Emerging evidence indicates that microRNAs, a class of small and well-conserved noncoding RNAs, participate in many physiological and pathological processes. RNase III endonuclease DICER is one of the key enzymes for microRNA biogenesis. Here, we found that DICER was downregulated in tumor samples of colorectal cancer (CRC) patients at both mRNA and protein levels. Importantly, intestinal epithelial cell (IEC)-specific deletion of Dicer mice got more tumors after azoxymethane and dextran sulfate sodium (DSS) administration...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28913777/diabetes-and-the-small-intestine
#2
REVIEW
Jonathan Gotfried, Stephen Priest, Ron Schey
Diabetes mellitus (DM) and its associated complications are becoming increasingly prevalent. Gastrointestinal symptoms associated with diabetes is known as diabetic enteropathy (DE) and may manifest as either diarrhea, fecal incontinence, constipation, dyspepsia, nausea, and vomiting or a combination of symptoms. The long-held belief that vagal autonomic neuropathy is the primary cause of DE has recently been challenged by newer theories of disease development. Specifically, hyperglycemia and the resulting oxidative stress on neural networks, including the nitrergic neurons and interstitial cells of Cajal (ICC), are now believed to play a central role in the development of DE...
September 15, 2017: Current Treatment Options in Gastroenterology
https://www.readbyqxmd.com/read/28912251/neuro-immune-interaction-and-the-regulation-of-intestinal-immune-homeostasis
#3
Simon Verheijden, Guy E Boeckxstaens
Many essential gastrointestinal functions, including motility, secretion and blood flow are regulated by the autonomic nervous system (ANS), both through intrinsic enteric neurons and extrinsic (sympathetic and parasympathetic) innervation. Recently identified neuro-immune mechanisms, in particular the interplay between enteric neurons and muscularis macrophages, are now considered to be essential for fine-tuning peristalsis. These findings shed new light on how intestinal immune cells can support enteric nervous function...
September 14, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28901462/role-of-ghrelin-in-small-intestinal-motility-following-pediatric-intracerebral-hemorrhage-in-mice
#4
Jieyu Zan, Lei Song, Jiejie Wang, Rong Zou, Fei Hong, Jinhua Zhao, Yijun Cheng, Ming Xu
Small intestinal motility (SIM) disorder is a common complication following pediatric intracerebral hemorrhage (ICH), leading to a poor prognosis in patients. Previous studies have shown that ghrelin is involved in SIM in various diseases; however, the role of ghrelin in pediatric ICH‑induced SIM disorder remains to be elucidated. The present study was designed to investigate the association between ghrelin and SIM post‑ICH, and to examine the effect of exogenous ghrelin administration on SIM in vivo...
September 12, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28898813/insight-into-the-modulation-of-intestinal-proteome-of-juvenile-common-carp-cyprinus-carpio-l-after-dietary-exposure-to-zno-nanoparticles
#5
Latifeh Chupani, Hamid Niksirat, Vanessa Lünsmann, Sven-Bastiaan Haange, Martin von Bergen, Nico Jehmlich, Eliska Zuskova
ZnO nanoparticles (NPs) are widely used in industrial and consumer products. Therefore understanding their interaction with biological systems is key to their safe application. Proteomics was applied to assess the sub-lethal effects of dietary ZnO NPs on two parts of carp intestine, the intestinal folds and the muscular parts. A commercial carp feed containing 500mgkg(-1) of ZnO NPs was fed to fish for six weeks. The abundances of 32 proteins in the treated intestinal folds were significantly changed and in addition, 28 proteins were significantly changed in the muscular parts...
September 9, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28893557/transcription-factor-cux1-is-required-for-intestinal-epithelial-wound-healing-and-targets-the-vav2-rac1-signalling-complex
#6
Roxanne Latreille, Raphaëlle Servant, Mathieu Darsigny, Sébastien Marcoux, Christine Jones, Nathalie Perreault, François Boudreau
Intestinal epithelial cells form a protective barrier in limiting gut luminal content potentially harmful to the host. Upon gut epithelium injury, several signals instruct epithelial cells to undergo a rapid healing process. Defects in this process induce inflammatory responses and can further evolve into chronic gut inflammatory diseases. We previously identified the transcription factor CUX1 as crucial for protecting against experimental colitis in mice. However, the precise molecular mechanisms by which CUX1 intervenes during this biological process are unknown...
September 8, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28885302/postinfection-irritable-bowel-syndrome-the-links-between-gastroenteritis-inflammation-the-microbiome-and-functional-disease
#7
Ian A Downs, Olga C Aroniadis, Libusha Kelly, Lawrence J Brandt
Postinfection irritable bowel syndrome (PI-IBS) is a diarrheal disease that develops after infectious gastroenteritis (IGE). Profound alterations in the microbiota accompany IGE yet only 10% of IGE patients progress to PI-IBS. This review explores research linking IGE severity, psychological comorbidity, PI-IBS, and the microbiome in various patient populations. Selective pressures caused by inflammation and increased gastrointestinal motility during gastroenteritis can alter intestinal bacterial phyla including Bacteroidetes, Firmicutes, and Proteobacteria...
September 6, 2017: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/28873384/role-of-incretin-hormones-in-bowel-diseases
#8
Tamara Zietek, Nadine Waldschmitt, Eva Rath
Enteroendocrine cells (EEC) have been studied extensively for their ability to regulate gastrointestinal motility and insulin release by secretion of peptide hormones. In particular, the L cell-derived incretin glucagon-like peptide 1 has gained enormous attention due to its insulinotropic action and relevance in the treatment of type 2 diabetes. Yet, accumulating data indicates a critical role for EEC and incretins in metabolic adaptation and in orchestrating immune responses beyond blood glucose control. EEC actively sense the lamina propria and luminal environment including the microbiota via receptors and transporters, subsequently mediating signals by secreting hormones and cytokines...
2017: Endocrine Development
https://www.readbyqxmd.com/read/28871936/xanthoma-like-skin-changes-in-an-elderly-woman-with-a-normal-lipid-profile
#9
Piotr Nockowski, Zdzisław Woźniak, Adam Reich, Joanna Maj
Dear Editor, An 83-year-old woman developed yellow-brownish infiltrates, nodules, and tumors mimicking xanthomas, mostly involving the periorbital and chest area within three months (Figure 1). She had no abnormalities in serum cholesterol or triglycerides levels. A detailed laboratory analysis revealed the presence of mild monoclonal gammopathy with a presence of immunoglobulin G (IgG) kappa light chains; however, according to hematologist consultation, it did not require medical intervention. Imaging assessment and ultrasound examination did not show any specific involvement of internal organs...
July 2017: Acta Dermatovenerologica Croatica: ADC
https://www.readbyqxmd.com/read/28871499/a-prospective-evaluation-of-ileocecal-valve-dysfunction-and-intestinal-motility-derangements-in-small-intestinal-bacterial-overgrowth
#10
Bani Chander Roland, Gerard E Mullin, Monica Passi, Xi Zheng, Ahmed Salem, Robert Yolken, Pankaj Jay Pasricha
BACKGROUND: Small intestinal bacterial overgrowth (SIBO) is an increasingly recognized clinical syndrome; however, its etiophathogenesis is poorly understood. We hypothesized that loss of gastric acid, a delayed intestinal transit, and ileocecal valve dysfunction may contribute to the genesis of this syndrome. AIMS: Our primary aim was to assess these parameters using wireless motility capsule (WMC) testing and to correlate them with the presence or absence of SIBO...
September 4, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28871143/dysbiosis-contributes-to-chronic-constipation-development-via-regulation-of-serotonin-transporter-in-the-intestine
#11
Hailong Cao, Xiang Liu, Yingying An, Guoqiong Zhou, Yanrong Liu, Mengque Xu, Wenxiao Dong, Sinan Wang, Fang Yan, Kui Jiang, Bangmao Wang
Chronic constipation is a prevalent functional gastrointestinal disorder accompanied with intestinal dysbiosis. However, causal relationship between dysbiosis and constipation remains poorly understood. Serotonin transporter (SERT) is a transmembrane transport protein which re-uptakes excessive 5-hydroxytryptamine (5-HT) from effective location to terminate its physiological effects and involves in regulating gastrointestinal motility. In this study, fecal microbiota from patients with constipation and healthy controls were transplanted into the antibiotic depletion mice model...
September 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28861049/characterization-of-histopathological-and-ultrastructural-changes-in-channel-catfish-experimentally-infected-with-virulent-aeromonas-hydrophila
#12
Hossam Abdelhamed, Iman Ibrahim, Wes Baumgartner, Mark L Lawrence, Attila Karsi
A highly virulent clonal population of Aeromonas hydrophila (vAh) has been the cause of recent motile Aeromonas septicemia epizootic in channel catfish (Ictalurus punctatus) farms in the Southeastern United States. The pathology of the disease caused by vAh has not been studied well yet. Thus, our aim was to determine histopathological and ultrastructural changes in channel catfish following vAh challenge. To accomplish this, catfish fingerlings were challenged with vAh (strain ML09-119) by bath. Six fish per each time point were collected at 1, 3, 5, 6, 24, and 48 h for light microscopy, and six fish were collected at 48 h for transmission electron microscopy (TEM)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28860709/%C3%AE-melanocyte-stimulating-hormone-modulates-the-central-acyl-ghrelin-induced-stimulation-of-feeding-gastrointestinal-motility-and-colonic-secretion
#13
Hsien-Hao Huang, Liang-Yu Chen, Ming-Luen Doong, Shi-Chuan Chang, Chih-Yen Chen
BACKGROUND: Acyl ghrelin-induced intake depends on hypothalamic neuropeptide Y and agouti-related protein (AgRP) neurotransmitters. Intracerebroventricular (ICV) injection of AgRP increases feeding through competitive antagonism at melanocortin receptors. ICV administration of α-melanocyte stimulating hormone (α-MSH), a natural antagonist of AgRP, may modulate the acyl ghrelin-induced orexigenic effect. OBJECTIVE: This study aimed to investigate the modulating effect of α-MSH on the central acyl ghrelin-induced food intake, gastrointestinal motility, and colonic secretion in rats...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28857333/mri-assessment-of-the-postprandial-gastrointestinal-motility-and-peptide-response-in-healthy-humans
#14
A Khalaf, C L Hoad, A Menys, A Nowak, S A Taylor, S Paparo, M Lingaya, Y Falcone, G Singh, R C Spiller, P A Gowland, L Marciani, G W Moran
BACKGROUND: Feeding triggers inter-related gastrointestinal (GI) motor, peptide and appetite responses. These are rarely studied together due to methodological limitations. Recent MRI advances allow pan-intestinal, non-invasive assessment of motility in the undisturbed gut. This study aimed to develop a methodology to assess pan-intestinal motility and transit in a single session using MRI and compare imaging findings to GI peptide responses to a test meal and symptoms in a healthy volunteer cohort...
August 31, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28857031/vagococcus-martis-sp-nov-isolated-from-the-small-intestine-of-a-marten-martes-flavigula
#15
Euon Jung Tak, Hyun Sik Kim, June-Young Lee, Woorim Kang, Dong-Wook Hyun, Pil Soo Kim, Na-Ri Shin, Jin-Woo Bae
A novel coccus-shaped, Gram-stain-positive, non-motile and facultative aerobic bacterium, designated strain D7T301T, was isolated from the small intestine of a marten, Martes flavigula, which was killed on the road in Pocheon-si, Gyeonggi-do, Republic of Korea. Grown on a tryptic soy yeast agar plate, colonies had a creamy colour and irregular form. The new isolate formed a monophyletic clade with Vagococcus penaei CD276T on a phylogenetic consensus tree based on the 16S rRNA gene sequence. The isolate grew optimally at 37 °C and pH 7 in the presence of 0...
August 31, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28839435/influence-of-dietary-isoflavone-intake-on-gastrointestinal-symptoms-in-ulcerative-colitis-individuals-in-remission
#16
Dominika Głąbska, Dominika Guzek, Dominika Grudzińska, Gustaw Lech
AIM: To analyse the association between isoflavone intake and ulcerative colitis motility symptoms in individuals in remission. METHODS: Cross-sectional study was conducted in a group of ulcerative colitis remission individuals, in sub-groups characterised by various intestinal motility and functioning characteristics (abdominal pain, flatulence, constipations, tenesmus). Total of 56 individuals with ulcerative colitis in remission (19 males and 37 females) were recruited for the study...
August 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28838986/ammonia-modifies-enteric-neuromuscular-transmission-through-glial-gamma-aminobutyric-acid-signaling
#17
David E Fried, Ralph E Watson, Simon C Robson, Brian D Gulbransen
OBJECTIVE: Impaired gut motility may contribute, at least in part, to the development of systemic hyperammonemia and systemic neurological disorders in inherited metabolic disorders, or in severe liver and renal disease. It is not known whether enteric neurotransmission regulates intestinal luminal and hence systemic ammonia levels by induced changes in motility. DESIGN: Here, we propose and test the hypothesis that ammonia acts through specific enteric circuits to influence gut motility...
August 24, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28836853/microrna-31-inhibits-rhoa-mediated-tumor-invasion-and-chemotherapy-resistance-in-mkn-45-gastric-adenocarcinoma-cells
#18
Alireza Korourian, Raheleh Roudi, Ahmad Shariftabrizi, Zahra Madjd
microRNAs are small single-stranded non-coding RNA molecules which modify gene expression by silencing potential target genes. The aberrant expression of RhoA, a small GTPase protein of Rho family, is involved in gastric cancer tumorigenesis. Since miR-31 is a pleomorphic molecule, we evaluated the miR-31/RhoA axis in inducing the malignant phenotype of gastric cancer cells MKN-45. Also, the clinicopathological significance of RhoA was investigated in a well-defined collection of gastric carcinomas which were embedded in tissue microarray blocks...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28835900/dietary-genistein-influences-number-of-acetylcholine-receptors-in-female-diabetic-jejunum
#19
Sydney Schacht, Faisal Masood, Shawn Catmull, Robert Dolan, RussL Altabtabaee, Wade Grow, Layla Al-Nakkash
BACKGROUND: Intestinal dysfunction in the ob/ob mouse model of diabetes mimics that seen clinically. METHODS: We determined the effects of a 4-week genistein diet (600 mg genistein/kg food) on intestinal function (contractility, morphology, AChR, and motility) in female ob/ob and lean mice. RESULTS: Contractility of the jejunum in response to incrementally increasing concentrations of KCl was comparable in ob/ob females and lean controls regardless of a genistein-diet...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/28831215/anti-diarrhea-activity-of-the-aqueous-root-bark-extract-of-byrsocarpus-coccineus-on-castor-oil-induced-diarrhea-in-wistar-rats
#20
Sunday A Ejeh, Patrick Onyeyili, Samson E Abalaka
AIM: The use of traditional medicine as an alternative source of cure for many ailments has played an important role in health care delivery in both developing and developed countries. Byrsocarpus coccineus Schum and Thonn (Connaraceae) is used in traditional medicine for treatment of various disease conditions, including diarrhea. The anti-diarrhea activity of the root bark aqueous extract of B. coccineus was investigated in this study. MATERIALS AND METHODS: Acute toxicity evaluation of the aqueous extract of B...
July 2017: Veterinary World
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