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|Title:||Naltrexone attenuates plasma nitric oxide release following acute heat stress||Authors:||Sachidhanandam, S.B.
Nitric oxide (NO) synthase
|Issue Date:||23-Aug-2002||Citation:||Sachidhanandam, S.B., Low, K.S.Y, Moochhala, S.M. (2002-08-23). Naltrexone attenuates plasma nitric oxide release following acute heat stress. European Journal of Pharmacology 450 (2) : 163-167. ScholarBank@NUS Repository. https://doi.org/10.1016/S0014-2999(02)02123-4||Abstract:||Previous studies have shown that naltrexone attenuates morbidity and mortality in heat stress by inhibiting endogenous opioids. In this study, we hypothesized that naltrexone can decrease heat stress by attenuating nitric oxide release. Male Sprague-Dawley rats were pretreated with naltrexone or normal saline, and exposed to 45°C for 25 min; controls were exposed to 25°C. Colonic temperatures were recorded and plasma samples from an in-dwelling i.v. cannula were analyzed for nitrate/nitrite levels. Following heat stress, peak colonic temperature was significantly diminished (P<0.05) in naltrexone-treated rats compared to saline-treated rats. Plasma nitrate/nitrite levels were significantly lower (P<0.05) in naltrexone-treated rats compared to saline-treated rats. These findings suggest that naltrexone is able to attenuate the rise in plasma nitric oxide levels commonly observed after heat stress. © 2002 Elsevier Science B.V. All rights reserved.||Source Title:||European Journal of Pharmacology||URI:||http://scholarbank.nus.edu.sg/handle/10635/108071||ISSN:||00142999||DOI:||10.1016/S0014-2999(02)02123-4|
|Appears in Collections:||Staff Publications|
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