Pivotal role of Rho-associated kinase 2 in generating the intrinsic circadian rhythm of vascular contractility.

Pivotal Role of Rho-Associated Kinase 2 in Generating the Intrinsic Circadian Rhythm of Vascular Contractility Running title: Saito et al.; ROCK2 in circadian rhythm of vasocontraction

The vascular clock system generates the intrinsic circadian rhythm of vascular contractility

Many of the cardiovascular parameters or incidences of coronary artery diseases display circadian variations. These day/night time variances may be attributable to the diurnal change in vascular contractility. However, the molecular mechanism of the vascular clock system which generates the circadian variation of vascular contractility has remained largely unknown. Recently we found the existen...

I-28: Role of Mevalonate-Ras Homology (Rho)/Rho-Associated Coiled-Coil-Forming Protein Ki nase-Mediated Signaling Pathway in The Pathogenesis of Endometriosis-Associated Fibrosis

Background: Endometriosis, a disease affecting 3-10% of women of reproductive age, is characterized by the ectopic growth of endometrial glands and stroma surrounded by dense fibrous tissue. Whereas, normal eutopic endometrium shows scarless tissue repair during menstrual cycles, which suggests that the endometriotic tissues have distinct mechanisms of fibrogenesis. During the development of en...

Effect of apelin on cardiac contractility in acute reno-vascular hypertension: The role of apelin receptor and kappa opioid receptor heterodimerization

Objective(s): Apelin/APJ system plays an important role in the regulation of myocardial contractility (MC) and blood pressure. Opioid receptors (OPRs) are also important cardiovascular regulators and exert many of their effects through modulating the function of other systems. This study analyzed the interaction between APJ and kappa OPRs (KOR) in cardiac responsiveness to apelin in acute reno-...

Decreased vascular contractility induced by hemin is associated with a reduced rho-kinase activity

OBJECTIVES In this study, the role of rho-kinase activity in the modulation of vascular contractility induced by hemin, a heme oxygenase inducer, was investigated. METHODS Aortic rings from Wistar rats were incubated in physiological saline solution (PSS) containing hemin at 10-(4) M for six hours then contracted with phenylephrine, and a dose-response curve was established. The effect of Y-2...