Leukocyte and endothelial angiotensin II type 1 receptors and microvascular thrombotic and inflammatory responses to hypercholesterolemia.

نویسنده

  • R Wayne Alexander
چکیده

Angiotensin II (Ang II) exacerbates atherosclerosis in animal models with activated renin-angiotensin systems and hypercholesterolemia.1 Indirect evidence from trials in which angiotensin-converting enzyme inhibitors and Ang II type 1 receptor (AT1R) blockers were efficacious in decreasing cardiovascular events support the notion that Ang II plays a role in the pathogenesis of atherosclerosis clinically.2,3 AT1Rs mediate most of the physiological and pathophysiologic cardiovascular responses to Ang II.4 AT1Rs are involved in the pathophysiology of atherosclerosis.5

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Endothelial Vasodilator Angiotensin Receptors are Changing in Mice with Ageing

Background: The vascular function of Angiotensin II-type-2 receptors in adults is controversial. We sought their location and function in mouse aortic rings at young and old mice. Materials and Methods: Male C57Bl mice (aged 4 and 14 months) were killed by CO2. The descending thoracic aorta was cleaned and dissected into rings. Aortic rings were mounted in Krebs’ solution at 37 °C an...

متن کامل

Role of blood cell-associated AT1 receptors in the microvascular responses to hypercholesterolemia.

OBJECTIVE Hypercholesterolemia elicits a proinflammatory and prothrombogenic phenotype in the microvasculature that is characterized by activation and adhesion of blood cells. The angiotensin II receptor-1 antagonist Losartan prevents the induction of these responses. The objective of this study was to determine the relative contributions of blood cell-associated versus endothelium-associated A...

متن کامل

Angiotensin II type-1 receptor antagonism attenuates the inflammatory and thrombogenic responses to hypercholesterolemia in venules.

Hypercholesterolemia elicits an inflammatory response in the microvasculature that is accompanied by an increased expression of angiotensin II type-1 receptors (AT1-R) on platelets, leukocytes, and endothelial cells. AT1-R blockade attenuates inflammatory responses to angiotensin II (eg, adhesion molecule expression and reactive oxygen species production). We investigated whether AT1-R antagoni...

متن کامل

Beyond blood pressure: endothelial protection against hypercholesterolemia by angiotensin II type-1 receptor blockade.

Hypercholesterolemia and an activated renin-angiotensin-aldosterone system are well-established independent cardiovascular risk factors. Several lines of evidence support an important role of modified LDLs and angiotensin II in the development and progression of atherosclerosis. Angiotensin II is not only a potent vasoconstrictor, but it also promotes proinflammatory and prothrombotic propertie...

متن کامل

Angiotensin II type 1 receptor signaling contributes to platelet-leukocyte-endothelial cell interactions in the cerebral microvasculature.

Angiotensin II type 1 (AT(1)) receptor signaling has been implicated in cerebral microvascular alterations associated with ischemia, diabetes mellitus, hypercholesterolemia, and atherosclerosis. Platelets, which express AT(1) receptors, also appear to contribute to the thrombogenic and inflammatory responses that are elicited by these pathological conditions. This study assesses the role of AT(...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Arteriosclerosis, thrombosis, and vascular biology

دوره 26 2  شماره 

صفحات  -

تاریخ انتشار 2006