Circular smooth muscle contributes to esophageal shortening during peristalsis
نویسندگان
چکیده
منابع مشابه
Circular and longitudinal muscles shortening indicates sliding patterns during peristalsis and transient lower esophageal sphincter relaxation.
Esophageal axial shortening is caused by longitudinal muscle (LM) contraction, but circular muscle (CM) may also contribute to axial shortening because of its spiral morphology. The goal of our study was to show patterns of contraction of CM and LM layers during peristalsis and transient lower esophageal sphincter (LES) relaxation (TLESR). In rats, esophageal and LES morphology was assessed by ...
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In healthy subjects, a close temporal correlation exists between contractions of the circular muscle (CM) and longitudinal muscle (LM) layers of the esophagus. Patients with nutcracker esophagus show disassociation between the peak of contractions of the CM and LM layers and the peak of contraction 1-3 s apart (Jung HY, Puckett JL, Bhalla V, Rojas-Feria M, Bhargava V, Liu J, Mittal RK. Gastroen...
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Cao, W., Q. Chen, U. D. Sohn, N. Kim, M. T. Kirber, K. M. Harnett, J. Behar, and P. Biancani. Ca-induced contraction of cat esophageal circular smooth muscle cells. Am J Physiol Cell Physiol 280: C980–C992, 2001.— ACh-induced contraction of esophageal circular muscle (ESO) depends on Ca influx and activation of protein kinase Ce (PKCe). PKCe, however, is known to be Ca independent. To determine...
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Galanin, a neuropeptide that is widely distributed in the esophageal nerves, is known to exert a neuromodulatory action in the gut. These studies examined the effect of galanin and galanin antagonists on esophageal peristalsis in anesthetized opossums in vivo. Intraluminal esophageal pressures were recorded at 1, 3, 5, 7, and 9 cm above the lower esophageal sphincter. Esophageal peristaltic con...
متن کاملPGF(2alpha)-induced contraction of cat esophageal and lower esophageal sphincter circular smooth muscle.
Lower esophageal sphincter (LES) tone depends on PGF(2alpha) and thromboxane A(2) acting on receptors linked to G(i3) and G(q) to activate phospholipases and produce second messengers resulting in muscle contraction. We therefore examined PGF(2alpha) signal transduction in circular smooth muscle cells isolated by enzymatic digestion from cat esophagus (Eso) and LES. In Eso, PGF(2alpha)-induced ...
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ژورنال
عنوان ژورنال: World Journal of Gastroenterology
سال: 2012
ISSN: 1007-9327
DOI: 10.3748/wjg.v18.i32.4317