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Proinflammatory and profibrotic mediators: principal effectors of leiomyoma development as a fibrotic disorder Chegini NSemin Reprod Med 2010[May]; 28 (3): 180-203Leiomyomas are believed to derive from the transformation of myometrial smooth muscle cells/connective tissue fibroblasts. Although the identity of the molecule(s) that initiate such cellular transformation and orchestrate subsequent growth is still unknown, conventional evidence indicates that ovarian steroids are essential for leiomyoma growth. Ovarian steroid action in their target cell/tissue is mediated in part through local expression of various growth factors, cytokines, and chemokines. These autocrine/paracrine molecules with proinflammatory and profibrotic activities serve as major contributing factors in regulating cellular transformation, cell growth and apoptosis, angiogenesis, cellular hypertrophy, and excess tissue turnover, events central to leiomyoma growth. This review addresses the key regulatory functions of proinflammatory and profibrotic mediators and their molecular mechanisms, downstream signaling that regulates cellular events that result in transformation, and commitments of specific cells into forming a cellular environment with a possible role in development and subsequent growth of leiomyomas.|Female[MESH]|Humans[MESH]|Inflammation Mediators/*metabolism[MESH]|Leiomyoma/*etiology/genetics/metabolism/pathology[MESH]|MicroRNAs/metabolism[MESH]|Phenotype[MESH]|Transforming Growth Factor beta/*metabolism[MESH]|Uterine Neoplasms/*etiology/genetics/metabolism/pathology[MESH] |
