Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0022104 (irritable bowel syndrome)
 8,033 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The gastrointestinal tract has extensive, surgically accessible nerve connections with the central nervous system. This provides the opportunity to exploit rapidly advancing methods of nerve stimulation to treat gastrointestinal disorders. Bioelectric neuromodulation technology has considerably advanced in the past decade, but sacral nerve stimulation for faecal incontinence currently remains the only neuromodulation protocol in general use for a gastrointestinal disorder. Treatment of other conditions, such as IBD, obesity, nausea and gastroparesis, has had variable success. That nerves modulate inflammation in the intestine is well established, but the anti-inflammatory effects of vagal nerve stimulation have only recently been discovered, and positive effects of this approach were seen in only some patients with Crohn's disease in a single trial. Pulses of high-frequency current applied to the vagus nerve have been used to block signalling from the stomach to the brain to reduce appetite with variable outcomes. Bioelectric neuromodulation has also been investigated for postoperative ileus, gastroparesis symptoms and constipation in animal models and some clinical trials. The clinical success of this bioelectric neuromodulation therapy might be enhanced through better knowledge of the targeted nerve pathways and their physiological and pathophysiological roles, optimizing stimulation protocols and determining which patients benefit most from this therapy.
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PMID:Bioelectric neuromodulation for gastrointestinal disorders: effectiveness and mechanisms. 3039 18

Introduction: Chronic idiopathic constipation (CIC) is a kind of constipation in which the patient experiences constipation more than 3 months without any identifiable cause. Prucalopride is one such treatment considered for relieving symptoms of CIC regarding due to its selectivity for the 5HT4 receptor.Areas covered: This article is based on a PubMed and clinicaltrials.gov search for studies undertaken over the past 19 years (2000-2019) using the following keywords either alone or in combination: Prucalopride, chronic idiopathic constipation, chronic constipation, 5HT4 receptor, Resolor and Motegrity.Expert opinion: Prucalopride should be considered as one of the safe options for the treatment of CIC especially when previous treatments have failed. It can be helpful in the treatment of constipation caused by irritable bowel syndrome or spinal cord injury, opioid-induced constipation, post-operative ileus, and intestinal/colonic pseudo-obstruction. The major drawback of prucalopride is its high cost, which makes it less accessible to all patients.
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PMID:An overview of the efficacy and safety of prucalopride for the treatment of chronic idiopathic constipation. 3155 72

Abnormal colorectal biomechanics and mechanotransduction associate with an array of gastrointestinal diseases, including inflammatory bowel disease, irritable bowel syndrome, diverticula disease, anorectal disorders, ileus, and chronic constipation. Visceral pain, principally evoked from mechanical distension, has a unique biomechanical component that plays a critical role in mechanotransduction, the process of encoding mechanical stimuli to the colorectum by sensory afferents. To fully understand the underlying mechanisms of visceral mechanical neural encoding demands focused attention on the macro- and micro-mechanics of colon tissue. Motivated by biomechanical experiments on the colon and rectum, increasing efforts focus on developing constitutive frameworks to interpret and predict the anisotropic and nonlinear biomechanical behaviors of the multilayered colorectum. We will review the current literature on computational modeling of the colon and rectum as well as the mechanical neural encoding by stretch sensitive afferent endings, and then highlight our recent advances in these areas. Current models provide insight into organ- and tissue-level biomechanics as well as the stretch-sensitive afferent endings of colorectal tissues yet an important challenge in modeling theory remains. The research community has not connected the biomechanical models to those of mechanosensitive nerve endings to create a cohesive multiscale framework for predicting mechanotransduction from organ-level biomechanics.
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PMID:The Macro- and Micro-Mechanics of the Colon and Rectum II: Theoretical and Computational Methods. 3325 22


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