search
for
 About Bioline  All Journals  Testimonials  Membership  News  Donations


Malaysian Journal of Medical Sciences
School of Medical Sciences, Universiti Sains Malaysia
ISSN: 1394-195X
Vol. 22, No. 2, 2015, pp. 8-17
Bioline Code: mj15015
Full paper language: English
Document type: Review Article
Document available free of charge

Malaysian Journal of Medical Sciences, Vol. 22, No. 2, 2015, pp. 8-17

 en Role of Endothelium-Dependent Hyperpolarisation and Prostacyclin in Diabetes
Mokhtar, Siti Safiah & Rasool, Aida Hanum Ghulam

Abstract

The endothelium plays a crucial role in maintaining vascular homeostasis by producing several vasodilating factors, including nitric oxide (NO), prostacyclin (PGI2), and endothelium-dependent hyperpolarisation (EDH); however, the balance between endothelial relaxing and contracting factors is disrupted in disease states such as diabetes mellitus and hypertension. Most reported studies of endothelial dysfunction in diabetes focused on the actions of NO; however, there is accumulating evidence demonstrating that in addition to NO, PGI2 and EDH are likely to contribute to the vasodilatation of blood vessels. EDH plays an important role as a regulator of vascular tone and reactivity in resistance and conduit arteries of animal models and humans. PGI2 only plays a minimal role in endothelium-dependent vasodilatation but may serve as an important compensatory mechanism in conditions in which NO and EDH activities are decreased. Further studies are needed to determine the exact roles of EDH and PGI2 in the development of endothelial dysfunction and clinical vasculopathy in humans with type 1 and type 2 diabetes.

Keywords
diabetes mellitus; endothelium-dependent hyperpolarisation; endothelium; potassium channels; prostacyclin

 
© Copyright 2015 - Malaysian Journal of Medical Sciences
Alternative site location: http://www.medic.usm.my/publication/mjms/

Home Faq Resources Email Bioline
© Bioline International, 1989 - 2017, Site last up-dated on 16-Oct-2017.
Site created and maintained by the Reference Center on Environmental Information, CRIA, Brazil
System hosted by the Internet Data Center of Rede Nacional de Ensino e Pesquisa, RNP, Brazil