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(Hypertension. 2006;47:822.)
© 2006 American Heart Association, Inc.
Editorial Commentaries |
From the Michael G. deGroote of Medicine, McMaster University, Hamilton General Hospital, Hamilton, Ontario, Canada.
Correspondence to Arya M. Sharma, McMaster University, Hamilton General Hospital, 237 Barton St East, Hamilton, Ontario, Canada, L8L 2X2. E-mail sharma@ccc.mcmaster.ca
An extract of the first 250 words of the full text is provided, because this article has no abstract. |
In 2002, my colleagues and I1 suggested that blockade of the renin-angiotensin system may prevent diabetes by promoting adipogenesis, thereby allowing redistribution of fat from dangerous visceral and ectopic fat deposits to less-dangerous subcutaneous depots. This hypothesis was based on our observation that angiotensin II inhibits human preadipocyte differentiation.2 We subsequently demonstrated increased activity of the renin-angiotensin system in obesity3 and suggested, therefore, that renin-angiotensin blockade should be the treatment of choice in obesity-related hypertension.4
In 2004, Benson et al5 reported the novel observation that the highly lipophilic angiotensin receptor blocker (ARB) telmisartan may directly stimulate the peroxisome proliferator activated receptor
(PPAR
), a key inducer of adipocyte differentiation. Although this property has since been also reported for irbesartan6 and a losartan metabolite,7 there is no doubt that telmisartan by 1 order of magnitude is the most powerful stimulator of PPAR
activity among the ARBs. Because thiazolidinediones, a class of even more potent PPAR
agonists ("glitazones"), are widely used as insulin sensitizers in the treatment of type 2 diabetes mellitus and promote both adipocyte proliferation and fat redistribution, the report that telmisartan may have similar glitazone-like properties led to widespread and enthusiastic speculations regarding the possible metabolic benefits of this compound.8 Without doubt, such a "eumetabolic" property of an antihypertensive drug would be of considerable interest, given that the majority of patients with hypertension also have other features of the metabolic syndrome. including abdominal adiposity, dyslipidemia. and insulin resistance.
In this issue of Hypertension, Sugimoto et al9 provide further
Related Article:
Hypertension 2006 47: 1003-1009.
This article has been cited by other articles:
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A. Remuzzi and G. Remuzzi Review: Potential protective effects of telmisartan on renal function deterioration Journal of Renin-Angiotensin-Aldosterone System, December 1, 2006; 7(4): 185 - 191. [Abstract] [PDF] |
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