Myocardial Structure and Vascularization of Hypertrophied Hearts

Gender and post-ischemic recovery of hypertrophied rat hearts

BACKGROUND Gender influences the cardiac response to prolonged increases in workload, with differences at structural, functional, and molecular levels. However, it is unknown if post-ischemic function or metabolism of female hypertrophied hearts differ from male hypertrophied hearts. Thus, we tested the hypothesis that gender influences post-ischemic function of pressure-overload hypertrophied ...

the underlying structure of language proficiency and the proficiency level

هدف از انجام این تخقیق بررسی رابطه احتمالی بین سطح مهارت زبان خارجی (foreign language proficiency) و ساختار مهارت زبان خارجی بود. تعداد 314 زبان آموز مونث و مذکر که عمدتا دانشجویان رشته های زبان انگلیسی در سطوح کارشناسی و کارشناسی ارشد بودند در این تحقیق شرکت کردند. از لحاظ سطح مهارت زبان خارجی شرکت کنندگان بسیار با هم متفاوت بودند، (75 نفر سطح پیشرفته، 113 نفر سطح متوسط، 126 سطح مقدماتی). کلا ...

Beta-adrenergic pathway in healthy and hypertrophied hearts.

The b-adrenergic pathway consists of b-adrenergic receptors, activating binding protein (Gs), adenylate cyclase and cAMP. b-Adrenergic receptors They consist of two subtypes, b 1 and b 2 . Cardiac b-adrenergic receptors are predominantly of the b 1 subtype, and the noncardiac ones, such as those of vessels and lungs, are of the b 2 subtype . In humans, the predominant population of ventricular ...

Normalization of impaired coronary circulation in hypertrophied rat hearts.

We tested the hypothesis that impaired coronary autoregulation, decreased flow reserve, and diminished reactive hyperemic response in hypertrophied hearts with coronary arterial hypertension may be reversible after relief of pressure overload. In 4-week ascending aortic banded rats, in vivo peak systolic left ventricular pressure increased to 178 +/- 8 mm Hg (103 +/- 6 mm Hg in sham-operated co...

Lipid Peroxidation and Reperfusion Injury in Hypertrophied Hearts