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Myometrial Relaxation and Contraction Pathways

This pathway illustrates signaling networks implicated in uterine muscle contraction at labor and quiescence throughout gestation (pregnancy). The muscle of the uterus, responsible for contractile activity is the myometrium. Genes in this pathway are either transcribed in myometrial muscle cells or act upon the myometrium to regulate contraction. The left half of this pathway illustrates pathways of myometrial relaxation that are active throughout normal gestation. These signaling events act to suppress coordinated contractions to prevent the early onset of labor at term, largely via activation of the adenylyl-cyclase thrhough G-protein coupled receptors. On the right side of this pathway are signaling componets involved in the activation of uterine contractions at labor, in particular, activation of calcium mobilization via Oxytocin mediated binding to the Oxytocin G-protein coupled receptor. Additional genes implicated in this pathway, based on microarray expression profiling of gestation, term and postpartum of term mice are also included (e.g., Guca2b, Rdc1, Edg2) have also been included. For a detailed description of this pathway see: http://genomebiology.com/2005/6/2/R12.

from WikiPathways source record: WP289
Type: pathway
Taxonomic scope
organism-specific biosystem

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