Potassium Channel Openers Increase Aortic Elastic Fiber Formation and Reverse the Genetically Determined Elastin Deficit in the Brown Norway Rat
August 2013
in “
Hypertension
”
New to Minoxidil? There is a guide in the encyclopedia. Read the guide → Studysummary The authors concluded that diazoxide reduces undesirable side effects compared to minoxidil while increasing elastic fiber content and decreasing cell number in the aorta, suggesting potential suitability for treating vascular conditions with low arterial elastin and hypertension. Our plain-language summary of this paper — not a Tressless recommendation.
The study demonstrated that potassium channel openers, such as minoxidil (Mx) and diazoxide (Dx), increased the formation of aortic elastic fibers and reversed the elastin deficit in Brown Norway rats. This effect was observed both in vitro and in vivo, with Mx and Dx enhancing elastin synthesis and increasing elastic fiber thickness. However, Mx also caused eccentric cardiac hypertrophy and aortic dilatation, which were mitigated by irbesartan (Irb), while Dx did not cause these changes. The findings suggested that potassium channel openers could be potential treatments for vascular pathologies with reduced elastin content, such as Williams–Beuren syndrome.
