keyword
MENU ▼
Read by QxMD icon Read
search

irritable Bowel Syndrome Constipation

keyword
https://www.readbyqxmd.com/read/28432691/tenapanor-administration-and-the-activity-of-the-h-coupled-transporter-pept1-in-healthy-volunteers
#1
Susanne Johansson, David P Rosenbaum, Johan Palm, Bergur Stefansson, Mikael Knutsson, Eleanor A Lisbon, Constanze Hilgendorf
AIM: Tenapanor (RDX5791/AZD1722), an inhibitor of gastrointestinal Na(+) /H(+) exchanger NHE3, is being evaluated for the treatment of patients with constipation-predominant irritable bowel syndrome and the treatment of hyperphosphataemia in patients with chronic kidney disease on dialysis. By reducing intestinal H(+) secretion, inhibition of NHE3 by tenapanor could indirectly affect H(+) -coupled transporter activity, leading to drug-drug interactions. We investigated the effect of tenapanor on the activity of the H(+) -coupled peptide transporter PepT1 via assessment of the pharmacokinetics of cefadroxil - a compound transported by PepT1 - in healthy volunteers...
April 22, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28417537/the-effects-and-mechanism-of-action-of-methane-on-ileal-motor-function
#2
Y M Park, Y J Lee, Z Hussain, Y H Lee, H Park
BACKGROUND: Methane has been associated with constipation-predominant irritable bowel syndrome, slowing intestinal transit time by augmenting contractile activity. However, the precise mechanism underlying this effect remains unclear. Therefore, we investigated the mechanisms underlying the effect of methane on contractile activity, and whether such effects are mediated by nerve impulses or muscular contraction. METHODS: We connected guinea pig ileal muscle strips to a force/tension transducer and measured amplitudes of contraction in response to electrical field stimulation (EFS; 1, 2, 8, 16 Hz) following methane infusion in the presence of tetradotoxin (TTX), atropine, guanethidine, or GR 113808...
April 18, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28410406/lubiprostone-improves-intestinal-permeability-in-humans-a-novel-therapy-for-the-leaky-gut-a-prospective-randomized-pilot-study-in-healthy-volunteers
#3
Takayuki Kato, Yasushi Honda, Yusuke Kurita, Akito Iwasaki, Takamitsu Sato, Takaomi Kessoku, Shiori Uchiyama, Yuji Ogawa, Hidenori Ohkubo, Takuma Higurashi, Takeharu Yamanaka, Haruki Usuda, Koichiro Wada, Atsushi Nakajima
BACKGROUND AND AIMS: The barrier function of the small intestinal mucosa prevents the introduction of undesired pathogens into the body. Breakdown of this barrier function increases intestinal permeability. This has been proposed to induce not only gastrointestinal diseases, including inflammatory bowel disease and irritable bowel syndrome, but also various other diseases, including allergies, diabetes mellitus, liver diseases, and collagen diseases, which are associated with this so called "leaky gut syndrome...
2017: PloS One
https://www.readbyqxmd.com/read/28408004/development-of-the-diary-for-irritable-bowel-syndrome-symptoms-to-assess-treatment-benefit-in-clinical-trials-foundational-qualitative-research
#4
Sheri E Fehnel, Claire M Ervin, Robyn T Carson, Gianna Rigoni, Jeffrey M Lackner, Stephen Joel Coons
BACKGROUND: Irritable bowel syndrome (IBS) is a chronic gastrointestinal disorder characterized by abdominal pain and alterations in bowel habits. Three subtypes are defined on the basis of stool patterns: diarrhea-predominant IBS, constipation-predominant IBS, and alternating or mixed IBS. OBJECTIVES: To develop patient-reported outcome measures for qualification by the Food and Drug Administration to support product approvals and labeling in IBS; the article focuses on the qualitative research that provided the foundation for the new measures...
April 2017: Value in Health: the Journal of the International Society for Pharmacoeconomics and Outcomes Research
https://www.readbyqxmd.com/read/28404070/pathophysiology-of-irritable-bowel-syndrome
#5
REVIEW
Gerald J Holtmann, Alexander C Ford, Nicholas J Talley
Traditionally, irritable bowel syndrome has been considered to be a disorder with no known underlying structural or biochemical explanation, but this concept is likely to be outdated. In this Review we challenge the widely accepted view that irritable bowel syndrome is an unexplained brain-gut disorder. There is epidemiological evidence that, in a major subset of patients, gastrointestinal symptoms arise first and only later do incident mood disorders occur. Additionally, possible mechanisms for gut-brain dysfunction have been identified, suggesting primary gut disturbances might be the underlying cause in a subgroup...
October 2016: Lancet. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28404068/association-between-functional-gastrointestinal-disorders-and-migraine-in-children-and-adolescents-a-case-control-study
#6
Julie Le Gal, Jean-Francois Michel, Victoria Elisa Rinaldi, Daniele Spiri, Raffaella Moretti, Donatella Bettati, Silvia Romanello, Paola Berlese, Rosa Lualdi, Priscilla Boizeau, Jerome Viala, Marc Bellaiche, Gian Vincenzo Zuccotti, Giovanni Crichiutti, Corinne Alberti, Luigi Titomanlio
BACKGROUND: Functional gastrointestinal disorders and migraine are both common causes of medical attention. We have previously shown an association between migraine and infant colic. In this case-control study, we aimed to establish whether there is an association between migraine and other functional gastrointestinal disorders in children and adolescents. METHODS: We included children and adolescents aged 6-17 years presenting to the emergency department of four tertiary hospitals in France and Italy...
October 2016: Lancet. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28403981/management-of-the-multiple-symptoms-of-irritable-bowel-syndrome
#7
REVIEW
Magnus Simrén, Hans Törnblom, Olafur S Palsson, William E Whitehead
Irritable bowel syndrome (IBS) is one of the most common functional gastrointestinal disorders. A stepwise management approach is advocated for patients with IBS. For a substantial proportion of patients with mild symptoms, general management principles, including making a confident diagnosis and offering explanation, reassurance, and dietary and lifestyle advice, are sufficient. However, many patients continue to have moderate-to-severe symptoms and are not satisfied solely with this approach. In these patients, use of pharmacotherapy on the basis of the predominant symptom (constipation, diarrhoea, pain, or bloating) or combination of symptoms is the next step...
February 2017: Lancet. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28374085/sex-related-differences-in-clinical-symptoms-quality-of-life-and-biochemical-factors-in-irritable-bowel-syndrome
#8
Razieh Choghakhori, Amir Abbasnezhad, Reza Amani, Meysam Alipour
BACKGROUND: Due to the sex differences in physiological and psychological factors, it can be speculated that clinical presentation of symptoms in male and female patients with irritable bowel syndrome (IBS) might be different. AIM: To evaluate sex-related differences in clinical symptoms, quality of life, and biochemical factors in IBS. METHODS: Ninety IBS patients (29 men, 61 women (45 premenopausal, 16 postmenopausal)) were recruited from the outpatient clinic of the University Hospital...
April 3, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28357122/therapeutically-targeting-guanylate-cyclase-c-computational-modeling-of-plecanatide-a-uroguanylin-analog
#9
Andrea Brancale, Kunwar Shailubhai, Salvatore Ferla, Antonio Ricci, Marcella Bassetto, Gary S Jacob
Plecanatide is a recently developed guanylate cyclase-C (GC-C) agonist and the first uroguanylin analog designed to treat chronic idiopathic constipation (CIC) and irritable bowel syndrome with constipation (IBS-C). GC-C receptors are found across the length of the intestines and are thought to play a key role in fluid regulation and electrolyte balance. Ligands of the GC-C receptor include endogenous agonists, uroguanylin and guanylin, as well as diarrheagenic, Escherichia coli heat-stable enterotoxins (ST)...
April 2017: Pharmacology Research & Perspectives
https://www.readbyqxmd.com/read/28333903/-evaluation-of-oro-cecal-transit-time-in-patients-with-irritable-bowel-syndrome-with-cereal-products-intolerance
#10
Aleksandra Błońska, Paulina Konrad, Jan Chojnacki, Cezary Chojnacki
The main symptoms of irritable bowel syndrome (IBS) include abnormal frequency of bowel movements. On this basis, three main clinical types of the disease have been distinguished, i.e.: constipation (IBSC), diarrhea (IBS-D) and mixed-type (IBS-M) in accordance with the Rome III criteria. These disorders mainly affect the colon, but symptoms related to upper gastrointestinal tract are also often observed. AIM: The aim of the study was to assess the oro-caecal transit time in patients with irritable bowel syndrome with IgG-dependent hypersensitivity to cereal products...
March 21, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28323272/constipation-predominant-irritable-bowel-syndrome-females-have-normal-colonic-barrier-and-secretory-function
#11
Stephanie A Peters, Shoko Edogawa, Wendy J Sundt, Roy B Dyer, Daniel A Dalenberg, Amelia Mazzone, Ravinder J Singh, Natalie Moses, Thomas C Smyrk, Christopher Weber, David R Linden, Wallace K MacNaughton, Jerrold R Turner, Michael Camilleri, David A Katzka, Gianrico Farrugia, Madhusudan Grover
OBJECTIVES: The objective of this study was to determine whether constipation-predominant irritable bowel syndrome (IBS-C) is associated with changes in intestinal barrier and secretory function. METHODS: A total of 19 IBS-C patients and 18 healthy volunteers (all females) underwent saccharide excretion assay (0.1 g (13)C mannitol and 1 g lactulose), measurements of duodenal and colonic mucosal barrier (transmucosal resistance (TMR), macromolecular and Escherichia coli Bio-Particle translocation), mucosal secretion (basal and acetylcholine (Ach)-evoked short-circuit current (Isc)), in vivo duodenal mucosal impedance, circulating endotoxins, and colonic tight junction gene expression...
March 21, 2017: American Journal of Gastroenterology
https://www.readbyqxmd.com/read/28320888/mutual-reinforcement-of-pathophysiological-host-microbe-interactions-in-intestinal-stasis-models
#12
Ketrija Touw, Daina L Ringus, Nathaniel Hubert, Yunwei Wang, Vanessa A Leone, Anuradha Nadimpalli, Betty R Theriault, Yong E Huang, Johnathan D Tune, Paul B Herring, Gianrico Farrugia, Purna C Kashyap, Dionysios A Antonopoulos, Eugene B Chang
Chronic diseases arise when there is mutual reinforcement of pathophysiological processes that cause an aberrant steady state. Such a sequence of events may underlie chronic constipation, which has been associated with dysbiosis of the gut. In this study we hypothesized that assemblage of microbial communities, directed by slow gastrointestinal transit, affects host function in a way that reinforces constipation and further maintains selection on microbial communities. In our study, we used two models - an opioid-induced constipation model in mice, and a humanized mouse model where germ-free mice were colonized with stool from a patient with constipation-predominant irritable bowel syndrome (IBS-C) in humans...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/28316763/serotonin-transporter-gene-slc6a4-polymorphism-and-mucosal-serotonin-levels-in-southeastern-iranian-patients-with-irritable-bowel-syndrome
#13
Mojgan Mohammadi, Hossein Tahmasebi Abdar, Hamid Reza Mollaei, Hossein Hajghani, Mohammad Reza Baneshi, Mohammad Mahdi Hayatbakhsh
BACKGROUND Irritable bowel syndrome (IBS) is a digestive system disorder with an unknown etiology. Serotonin has a key role in the secretion and motility of the intestine. Polymorphism in serotonin re-uptake transporter (SERT or SLC6A4) gene may have a functional role in the gut of patients with IBS. The aims of the present study were to investigate the association between SLC6A4 gene polymorphism and IBS and to detect the correlation between rectal serotonin levels and IBS sub-types. METHODS SLC6A4 gene polymorphism in 131 patients with IBS and 211 healthy controls were analysed using the quantitative polymerase chain reaction high-resolution melting (qPCR-HRM) curve technique...
January 2017: Middle East Journal of Digestive Diseases
https://www.readbyqxmd.com/read/28306531/managing-irritable-bowel-syndrome-the-impact-of-micro-physiotherapy
#14
Daniel Grosjean, Patrice Benini, Pierre Carayon
Background Irritable bowel syndrome (IBS) has a complex pathology, high prevalence and large impact on patients' quality of life. As conventional therapy may yield unsatisfactory results, a more holistic approach may be desirable. The current study assessed the effect of micro-physiotherapy on the severity of IBS symptoms. Methods In a double-blind study, 61 recurrent IBS patients were randomised to two sessions of micro-physiotherapy or sham micro-physiotherapy. Inclusion criteria were the presence of ≥1 IBS symptom from abdominal pain, constipation, diarrhoea or bloating...
March 17, 2017: Journal of Complementary & Integrative Medicine
https://www.readbyqxmd.com/read/28301096/effects-of-tenapanor-on-cytochrome-p450-mediated-drug-drug-interactions
#15
Susanne Johansson, David P Rosenbaum, Marie Ahlqvist, Helen Rollison, Mikael Knutsson, Bergur Stefansson, Marie Elebring
Tenapanor (RDX5791, AZD1722) is an inhibitor of sodium/hydrogen exchanger isoform 3 in development for the treatment of constipation-predominant irritable bowel syndrome and the treatment of hyperphosphatemia in patients with chronic kidney disease on dialysis. We aimed to investigate whether tenapanor inhibits or induces cytochrome P450s (CYPs). In vitro experiments assessing the potential of tenapanor to affect various CYPs indicated that it could inhibit CYP3A4/5 (IC50 0.4-0.7 μM). An open-label, phase 1 clinical study (NCT02140268) evaluated the pharmacokinetics of the CYP3A4 substrate midazolam when administered with and without tenapanor...
March 16, 2017: Clinical Pharmacology in Drug Development
https://www.readbyqxmd.com/read/28291778/efficacy-and-safety-of-5-hydroxytryptamine-3-receptor-antagonists-in-irritable-bowel-syndrome-a-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#16
Yongping Zheng, Ting Yu, Yurong Tang, Wenjie Xiong, Xiaoxue Shen, Ling Jiang, Lin Lin
AIM: We assessed the efficacy and safety of 5-hydroxytryptamine (5-HT3) receptor antagonists in adults with non-constipated irritable bowel syndrome (IBS) or diarrhea-predominant IBS (IBS-D). METHODS: We searched PubMed, MEDLINE, EMBASE, and the Cochrane Controlled Trials Register for randomized controlled trials (RCTs) involving adults with non-constipated IBS or IBS-D that compared 5-HT3 receptor antagonists with placebo or other conventional treatment. Dichotomous symptom data were pooled to obtain the relative risk (RR) and 95% confidence intervals (CIs) for improving global IBS symptoms, abdominal pain and abnormal bowel habits, or stool consistency symptoms after therapy, and adverse events, including constipation...
2017: PloS One
https://www.readbyqxmd.com/read/28277856/electrical-therapies-for-gastrointestinal-motility-disorders
#17
Jiande D Z Chen, Jieyun Yin, Wei Wei
INTRODUCTION: Gastrointestinal (GI) motility disorders are common in clinical settings, including esophageal motility disorders, gastroesophageal reflux disease, functional dyspepsia, gastroparesis, chronic intestinal pseudo-obstruction, post-operative ileus, irritable bowel syndrome, diarrhea and constipation. While a number of drugs have been developed for treating GI motility disorders, few are currently available. Emerging electrical stimulation methods may provide new treatment options for these GI motility disorders...
March 21, 2017: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28274109/what-is-new-in-rome-iv
#18
REVIEW
Max J Schmulson, Douglas A Drossman
Functional gastrointestinal disorders (FGIDs) are diagnosed and classified using the Rome criteria; the criteria may change over time as new scientific data emerge. The Rome IV was released in May 2016. The aim is to review the main changes in Rome IV. FGIDs are now called disorders of gut-brain interaction (DGBI). Rome IV has a multicultural rather than a Western-culture focus. There are new chapters including multicultural, age-gender-women's health, intestinal microenvironment, biopsychosocial, and centrally mediated disorders...
April 30, 2017: Journal of Neurogastroenterology and Motility
https://www.readbyqxmd.com/read/28273275/assessing-the-sleep-quality-and-depression-anxiety-stress-in-irritable-bowel-syndrome-patients
#19
Nadieh Baniasadi, Mohammad Moein Dehesh, Elham Mohebbi, Mahdy Hayatbakhsh Abbasi, Zohreh Oghabian
BACKGROUND: Irritable bowel syndrome (IBS) is one of the most common functional gastrointestinal disorders with chronic abdominal pain and altered bowel habit without any organic reason. Sleep disorders may be associated to IBS. OBJECTIVE: We aimed to assess sleep disturbances and depression-anxiety-stress in IBS patients. METHODS: In this analytical cross sectional study from November 2013 to May 2014, A total of 123 IBS patients were recruited by simple random sampling...
February 23, 2017: Arquivos de Gastroenterologia
https://www.readbyqxmd.com/read/28271055/treatment-algorithm-for-chronic-idiopathic-constipation-and-constipation-predominant-irritable-bowel-syndrome-derived-from-a-canadian-national-survey-and-needs-assessment-on-choices-of-therapeutic-agents
#20
Yvonne Tse, David Armstrong, Christopher N Andrews, Alain Bitton, Brian Bressler, John Marshall, Louis W C Liu
Background. Chronic idiopathic constipation (CIC) and constipation-predominant irritable bowel syndrome (IBS-C) are common functional lower gastrointestinal disorders that impair patients' quality of life. In a national survey, we aimed to evaluate (1) Canadian physician practice patterns in the utilization of therapeutic agents listed in the new ACG and AGA guidelines; (2) physicians satisfaction with these agents for their CIC and IBS-C patients; and (3) the usefulness of these new guidelines in their clinical practice...
2017: Canadian Journal of Gastroenterology & Hepatology
keyword
keyword
61929
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"