On the basis of these results we propose that during acute stress AVP interacts with, especially, the PVN and the CeA, to change their rates of biosynthesis and/or release of CRF. (C) 2011 Elsevier B.V. All rights reserved.”
“Objectives Retinal blood vessels may develop

vasculopathy and apoptosis in response to hypertension. The present study was aimed at testing the role of losartan, a specific antagonist of angiotensin II receptor type 1 receptor in regulation of vascular apoptosis in retinal vasculature with hypertension.\n\nMethods Losartan potassium was administered to spontaneously hypertensive rats (SHR). Blood pressure was measured in SHR as well as normotensive Wistar-Kyoto rats (WKY). Eye fundus was examined in living animals and then tissue specimens were collected for histochemistry by Selleckchem Fer-1 hematoxylin and eosin staining, terminal deoxynucleotidyl transferase-mediated 2′-deoxyuridine NSC23766 chemical structure 5′-triphosphate nick end labeling (TUNEL), immunohistochemistry and transmission electron microscopy.\n\nResults Losartan treatment for 4-8 weeks reduced blood pressure

of SHR to the normal levels seen in WKY. The losartan-treated SHR showed marked improvement of retinal vascular morphology compared with untreated SHR. The retinal blood networks of the treated SHR developed lower degrees of vasculopathy and apoptosis. TUNEL and transmission electron microscopy also revealed that losartan exerted its protective effects not only on endothelial cells but on pericytes as well. The blood vessels of losartan-treated animals also showed decreased expression of bax with Fludarabine purchase elevation of B-cell CLL/lymphoma 2.\n\nConclusion Treatment with losartan, a medicine that lowers blood pressure by blocking angiotensin II receptor type 1 receptor, can protect the retinal vasculature against hypertensive vascular injury by inhibiting apoptosis of vascular cells and by preventing hypertensive retinopathy. J Hypertens 28:510-519 (c) 2010 Wolters Kluwer Health vertical bar Lippincott Williams & Wilkins.”
“Niosomes represent an emerging class of novel vesicular systems. They are composed

of nonionic surfactants which are biodegradable and relatively nontoxic. They were developed as stable and inexpensive alternatives to liposomes. Since their early introduction to cosmetic industry their role has diversified to other application areas. They are now being ardently explored as potential carriers for sustained and targeted drug delivery. In addition to conventional, oral, and parenteral routes, they are amenable to be delivered by ocular, transdermal, vaginal, and inhalation routes. Delivery of biotechnological products including vaccine delivery with niosomes is also an interesting and promising research area. The introduction of provesicular approach in the form of proniosomes has further increased the relevance of these systems.