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Immunofluorescence was used to study immunoreactivity (IR) for corticotropin-releasing factor (CRF) in the guinea pig enteric nervous system. CRF-IR was expressed in both the myenteric and the submucosal plexuses of all regions of the large and small intestine and the myenteric plexus of the stomach. CRF-IR nerve fibers were present in the myenteric and(More)
Reverse transcription-polymerase chain reaction (RT-PCR), immunohistochemistry, electrophysiological recording, and intraneuronal injection of the neuronal tracer biocytin were integrated in a study of the functional expression of corticotropin-releasing factor (CRF) receptors in the guinea pig enteric nervous system. RT-PCR revealed expression of CRF1(More)
ATP is a putative inhibitory neurotransmitter responsible for inhibitory junction potentials (IJPs) at neuromuscular junctions (IJPs) in the intestine. This study tested the hypothesis that the purinergic P2Y(1) receptor subtype mediates the IJPs. IJPs were evoked by focal electrical stimulation in the myenteric plexus and recorded with "sharp"(More)
BACKGROUND Patients with irritable bowel syndrome (IBS) have significantly reduced quality of life (QOL). Although intestinal and extraintestinal symptoms, as well as comorbid psychological disorders, may reduce the QOL of IBS patients, the primary determinant of QOL in these patients remains unclear. This study aimed to identify the main factors affecting(More)
We tested the hypothesis that ATP is an enteric neurotransmitter that acts at P2Y1 excitatory purinergic receptors on intestinal secretomotor neurons to evoke neurogenic mucosal secretion in the guinea pig. Ussing chamber methods for studying neurogenic intestinal secretion were used to test the hypothesis. Application of ATP evoked concentration-dependent(More)
OBJECTIVE To determine whether intestinal infection plays a role on the pathogenesis of irritable bowel syndrome (IBS). METHODS 295 patients who had no previous history of functional bowel disorder had received treatment for dysentery (n = 235) or for acute bowel infection at the hospital between April-October, 1998, were followed up for 1 - 2 years and(More)
BACKGROUND/AIMS Physical and/or emotional stresses are important factors in the exacerbation of symptoms in irritable bowel syndrome (IBS). Several lines of evidence support that a major impact of stress on the gastrointestinal tract occurs via the enteric nervous system. We aimed to evaluate histological changes in the submucosal plexus (SMP) and myenteric(More)
BACKGROUND/AIMS Achalasia patients would feel exacerbated dysphagia, chest pain and regurgitation when they drink cold beverages or eat cold food. But these symptoms would relieve when they drink hot water. Reasons are unknown. METHODS Twelve achalasia patients (mean age, 34 ± 10 years; F:M, 3:9) who never had any invasive therapies were chosen from(More)
BACKGROUND Treatment of irritable bowel syndrome (IBS) with probiotics has achieved effectiveness to a certain extent. Whether prebiotics will work is still unclear. This study aimed to investigate the therapeutic effects of the prebiotic isomalto-oligosaccharides (IMO) on visceral hypersensitivity (VHS) in rats and to explore potential mechanism. METHODS(More)
  • Xiucai Fang
  • 2016
In Rome IIII( diagnostic system, disorders associated with chronic constipation include functional constipation, opioid-induced constipation, irritable bowel syndrome with predominant constipation and functional defecation disorders, each disorder has the relative characteristics of clinical manifestations and underlying pathophysiology. Rome IIII((More)