The hyalocytes have a contractile property in the presence of PDGF-BB and TGF-beta2. Whereas PDGF-BB initiates collagen gel contraction by transient activation of the Rho-kinase pathway, sustained activation of the Rho-kinase pathway and myofibroblast-like transdifferentiation appears to be involved in the TGF-beta2-dependent contractile properties of hyalocytes.
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Hirayama et al. (2004) studied this question.
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