STAT subtype specificity and ischemic preconditioning in mice: is STAT-3 enough?
نویسندگان
چکیده
منابع مشابه
STAT subtype specificity and ischemic preconditioning in mice: is STAT-3 enough?
The role of other STAT subtypes in conferring ischemic tolerance is unclear. We hypothesized that in STAT-3 deletion alternative STAT subtypes would protect myocardial function against ischemia-reperfusion injury. Wild-type (WT) male C57BL/6 mice or mice with cardiomyocyte STAT-3 knockout (KO) underwent baseline echocardiography. Langendorff-perfused hearts underwent ischemic preconditioning (I...
متن کاملSTAT-3 activation is necessary for ischemic preconditioning in hypertrophied myocardium.
The JAK-STAT pathway is activated in the early and late phases of ischemic preconditioning (IPC) in normal myocardium. The role of this pathway and the efficacy of IPC in hypertrophied hearts remain largely unknown. We hypothesized that phosphorylated STAT-3 (pSTAT-3) is necessary for effective IPC in pressure-overload hypertrophy. Male Sprague-Dawley rats 8 wk after thoracic aortic constrictio...
متن کاملGenetic depletion of cardiac myocyte STAT-3 abolishes classical preconditioning.
OBJECTIVE To evaluate the functional requirement of signal transducer and activator of transcription-3 (STAT-3) in cardiac myocyte tolerance to ischemia (I) and in classical preconditioning. METHODS Cardiac myocyte STAT-3 was depleted in mice using Cre-lox p technology. Isolated cardiomyocytes from wild-type (WT) and STAT-3-deficient mice were evaluated for viability following simulated ische...
متن کاملSTAT signaling in ischemic heart: a role of STAT5A in ischemic preconditioning.
We recently demonstrated that ischemic preconditioning (PC) induced by cyclic episodes of short duration of ischemia and reperfusion potentiates a signal transduction cascade involving Janus kinase (JAK) 2 and signal transducer and activator of transcription 3 (STAT3). A rapid activation of JAK and several STATs, including STAT3, STAT5A, and STAT6 also occurred during myocardial ischemia and re...
متن کاملDual activation of STAT-3 and Akt is required during the trigger phase of ischaemic preconditioning.
AIMS During preconditioning by tumour necrosis factor-alpha (TNFalpha), activation of the signal transducer and activator of transcription-3 (STAT-3) but not Akt, is essential, whereas ischaemic cardiac preconditioning (IPC) requires both STAT-3 and Akt at the time of reperfusion. However, it is not known whether the same signalling pattern occurs during the preconditioning stimulus (trigger ph...
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ژورنال
عنوان ژورنال: American Journal of Physiology-Heart and Circulatory Physiology
سال: 2011
ISSN: 0363-6135,1522-1539
DOI: 10.1152/ajpheart.00231.2010