alexa Telmisartan prevented cognitive decline partly due to PPAR-gamma activation.
Pharmaceutical Sciences

Pharmaceutical Sciences

Journal of Clinical & Experimental Pharmacology

Author(s): Mogi M, Li JM, Tsukuda K, Iwanami J, Min LJ, , Mogi M, Li JM, Tsukuda K, Iwanami J, Min LJ,

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Abstract Telmisartan is a unique angiotensin receptor blocker (ARB) and partial agonist of peroxisome proliferator-activated receptor (PPAR)-gamma. Here, we investigated the preventive effect of telmisartan on cognitive decline in Alzheimer disease. In ddY mice, intracerebroventricular injection of Abeta 1-40 significantly attenuated their cognitive function evaluated by shuttle avoidance test. Pretreatment with a non-hypotensive dose of telmisartan significantly inhibited such cognitive decline. Interestingly, co-treatment with GW9662, a PPAR-gamma antagonist, partially inhibited this improvement of cognitive decline. Another ARB, losartan, which has less PPAR-gamma agonistic effect, also inhibited Abeta-injection-induced cognitive decline; however the effect was smaller than that of telmisartan and was not affected by GW9662. Immunohistochemical staining for Abeta showed the reduced Abeta deposition in telmisartan-treated mice. However, this reduction was not observed in mice co-administered GW9662. These findings suggest that ARB has a preventive effect on cognitive impairment in Alzheimer disease, and telmisartan, with PPAR-gamma activation, could exert a stronger effect. This article was published in Biochem Biophys Res Commun and referenced in Journal of Clinical & Experimental Pharmacology

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