PMID- 23766863 OWN - NLM STAT- MEDLINE DCOM- 20140813 LR - 20211021 IS - 1942-0994 (Electronic) IS - 1942-0900 (Print) IS - 1942-0994 (Linking) VI - 2013 DP - 2013 TI - Effect of Clonidine (an antihypertensive drug) treatment on oxidative stress markers in the heart of spontaneously hypertensive rats. PG - 927214 LID - 10.1155/2013/927214 [doi] LID - 927214 AB - Hypertension is a risk factor for several cardiovascular diseases and oxidative stress suggested to be involved in the pathophysiology. Antihypertensive drug Clonidine action in ameliorating oxidative stress was not well studied. Therefore, this study investigate the effect of Clonidine on oxidative stress markers and nitric oxide (NO) in SHR and nitric oxide synthase inhibitor, N-nitro-L-arginine methyl ester (L-NAME) administered SHR. Male rats were divided into four groups [SHR, SHR+Clonidine (SHR-C), SHR+L-NAME, SHR+Clonidine+L-NAME(SHRC+L-NAME)]. Rats (SHRC) were administered with Clonidine (0.5 mg kg(-1) day(-1)) from 4 weeks to 28 weeks in drinking water and L-NAME (25 mg kg(-1) day(-1)) from 16 weeks to 28 weeks to SHRC+L-NAME. Systolic blood pressure (SBP) was measured. At the end of 28 weeks, all rats were sacrificed and in their heart homogenate, oxidative stress parameters and NO was assessed. Clonidine treatment significantly enhanced the total antioxidant status (TAS) (P < 0.001) and reduced the thibarbituric acid reactive substances (TBARS) (P < 0.001) and protein carbonyl content (PCO) (P < 0.05). These data suggest that oxidative stress is involved in the hypertensive organ damage and Clonidine not only lowers the SBP but also ameliorated the oxidative stress in the heart of SHR and SHR+L-NAME. FAU - Nik Yusoff, Nik Syamimi AU - Nik Yusoff NS AD - Department of Chemical Pathology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia. FAU - Mustapha, Zulkarnain AU - Mustapha Z FAU - Govindasamy, Chandran AU - Govindasamy C FAU - Sirajudeen, K N S AU - Sirajudeen KN LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130516 PL - United States TA - Oxid Med Cell Longev JT - Oxidative medicine and cellular longevity JID - 101479826 RN - 0 (Antihypertensive Agents) RN - 0 (Antioxidants) RN - 0 (Biomarkers) RN - 0 (Thiobarbituric Acid Reactive Substances) RN - 31C4KY9ESH (Nitric Oxide) RN - MN3L5RMN02 (Clonidine) RN - V55S2QJN2X (NG-Nitroarginine Methyl Ester) SB - IM MH - Animals MH - Antihypertensive Agents/administration & dosage/*pharmacology/therapeutic use MH - Antioxidants/metabolism MH - Biomarkers/*metabolism MH - Blood Pressure/drug effects MH - Clonidine/administration & dosage/*pharmacology/*therapeutic use MH - Heart/*drug effects/physiopathology MH - Hypertension/*drug therapy/physiopathology MH - Male MH - NG-Nitroarginine Methyl Ester/administration & dosage/pharmacology/therapeutic use MH - Nitric Oxide/metabolism MH - Oxidative Stress/*drug effects MH - Protein Carbonylation/drug effects MH - Rats MH - Rats, Inbred SHR MH - Thiobarbituric Acid Reactive Substances/metabolism PMC - PMC3671561 EDAT- 2013/06/15 06:00 MHDA- 2014/08/15 06:00 PMCR- 2013/05/16 CRDT- 2013/06/15 06:00 PHST- 2013/02/09 00:00 [received] PHST- 2013/04/04 00:00 [accepted] PHST- 2013/06/15 06:00 [entrez] PHST- 2013/06/15 06:00 [pubmed] PHST- 2014/08/15 06:00 [medline] PHST- 2013/05/16 00:00 [pmc-release] AID - 10.1155/2013/927214 [doi] PST - ppublish SO - Oxid Med Cell Longev. 2013;2013:927214. doi: 10.1155/2013/927214. Epub 2013 May 16.