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

This study is to explore the amelioration of piperine on chronic acute combining stress rat with depression-like behavior, visceral sensitivity, and its effect on the expression of serotonin (5-HT) and synaptophysin. Forty two SD rats were divided into seven groups: blank group, model group, piperine (12.5, 25, 50 and 100 mgkg-1, ig) and imipramine (10 mgkg-1, ip) groups. The rat model of irritable bowel syndrome was established by chronic acute combining stress, and then to evaluate depression-like behavior and visceral sensitivity. The expressions of 5-HT and synaptophysin in the hippocampus and colon were determined by high performance liquid chromatography (HPLC) and Western blotting, respectively. The duration of immobility of IBS rat in the forced swimming test had been significantly increased, the sucrose consumption of IBS rat had been reduced and visceral sensitivity was obviously elevated in the IBS model group as compared with those in the normal control group (P<0.05, P<0.01). As compared with those in the normal control group, the expression of 5-HT significantly decreased, 5-HIAA/5-HT ratio significantly increased in the hippocampus of IBS model group (P<0.05), but opposite presentations were noted in the colon (P<0.05). As compared with that in the normal control group, the synaptophysin expression in the hippocampus decreased significantly but obviously increased in the colon (P<0.05). Piperine improved the behavior of IBS rats, and reversed the levels of 5-HT and 5-HIAA, and 5-HIAA/5-HT proportion in the hippocampus and colon (P<0.05); besides, they significantly reverse the synaptophysin level in the hippocampus and colon (P<0.05). The presence of depression and visceral sensitivity had been changed in IBS rats, with abnormal expression of 5-HT and synaptophysin in the brain-gut system. Piperine can ameliorate the changes of the behavior and regulation of serotonin and synaptophysin expression in IBS rat model.
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PMID:[Effect of piperine on 5-HT and synaptophysin expression of rats with irritable bowel syndrome]. 2468 35

Patients with irritable bowel syndrome suffer from chronic visceral pain, and in some of them, this is accompanied by anxiety comorbidity. Cytoplasmic polyadenylation element binding protein 1 (CPEB1) mediates the cytoplasmic polyadenylation of mRNAs and facilitates their translation. Our previous studies have shown that CPEB1 knockdown in the amygdala exerts anxiolytic but not analgesic effects in a mouse model of inflammatory pain. However, the roles of CPEB1 in the anterior cingulate cortex (ACC) in visceral pain modulation remain unclear. In this study, a visceral pain mouse model was established by injecting zymosan into the colon of mice. Zymosan injection significantly induced visceral pain- and anxiety-like behaviors in mice and increased the levels of GluA1, phosphorylated GluA1 at S845 and S831, and CPEB1 in the ACC. CPEB1 knockdown in the ACC by AAV-CPEB1-shRNA reduced zymosan-induced pain- and anxiety-like behaviors in mice. This observation was closely correlated with reduced AMPA receptor, synaptophysin, and PSD95 levels. These data suggest that CPEB1 in the ACC is a potential therapeutic target for visceral pain and anxiety comorbidity.
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PMID:Effects of CPEB1 in the anterior cingulate cortex on visceral pain in mice. 3073 Oct 77