PMID- 19595129 OWN - NLM STAT- MEDLINE DCOM- 20091117 LR - 20131121 IS - 0376-2491 (Print) IS - 0376-2491 (Linking) VI - 89 IP - 12 DP - 2009 Mar 31 TI - [Simvastatin prevents the development of pulmonary hypertension in the rats through reduction of inflammation]. PG - 855-9 AB - OBJECTIVE: To investigate the protection of simvastatin on monocrotaline (MCT)-induce pulmonary hypertension (PH) and the mechanism thereof. METHODS: Thirty-two male Sprague-Dawley rats were randomly divided into 4 equal groups: PH group undergoing subcutaneous injection of MCT and then gastric infusion of normal saline (NS) once a day for 21 days, simvastatin control group undergoing subcutaneous injection of NS and then gastric infusion of simvastatin 2 microg/g once a day for 21 days, simvastatin intervention group undergoing subcutaneous injection of MTS and then gastric infusion of simvastatin 2 microg/g once a day for 21 days, and control group undergoing subcutaneous injection and gastric infusion of NS. Three weeks later the mean pulmonary arterial pressure (mPAP) was detected by right heart catheter. Then the rats were killed with their lungs taken out. Arterial wall area/vessel area (W/V), and arterial wall thickness/vessel external diameter (T/D) were calculated. Perivascular inflammation was scored with the subjective scale of 0 (no) to 4 (severe). Pulmonary interleukin (IL)-6, tumor necrosis factor alpha (TNF-alpha), and monocyte chemotactic protein 1 (MCP-1) were tested by ELISA. RESULTS: The mPAP of the simvastatin intervention group was (23 +/- 7) mm Hg, significantly lower than that of the PH group [(34 +/- 9) mm Hg, P < 0.05], but not significantly different from that of the normal control group [(20 +/- 4) mm Hg, P > 0.05]. The W/V and T/D of the simvastatin intervention group were 0.442 +/- 0.061 and 0.325 +/- 0.045 respectively, significantly lower than those of the PH group (0.560 +/- 0.086 and 0.368 +/- 0.055 respectively, P < 0.01 and P < 0.05). The perivascular inflammation score of the simvastatin intervention group was (2.19 +/- 0.81), significantly lower than that of the PH group (3.40 +/- 0.65, P < 0.05), and the IL-6, TNF-alpha, and MCP-1 levels of the simvastatin intervention group [(264 +/- 127), (179 +/- 91), and (697 +/- 211) pg/ml respectively] were all significantly lower than those of the PH group [(765 +/- 179), (447 +/- 86), (4428 +/- 757) pg/ml respectively, all P < 0.01]. CONCLUSION: The protective effects of simvastatin against MCT-induced PH may be associated with the inhibition of the perivascular inflammation and lung IL-6, TNF-alpha, and MCP-1 levels. FAU - Zhang, Wei-Hua AU - Zhang WH AD - Department of Respiratory Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China. FAU - Lu, Wei-Xuan AU - Lu WX FAU - Zhang, Yun-Jian AU - Zhang YJ FAU - Ji, Ying-Qun AU - Ji YQ FAU - Liu, Chun-Ping AU - Liu CP FAU - Li, Guo AU - Li G LA - chi PT - English Abstract PT - Journal Article PL - China TA - Zhonghua Yi Xue Za Zhi JT - Zhonghua yi xue za zhi JID - 7511141 RN - 0 (Chemokine CCL2) RN - 0 (Interleukin-6) RN - 0 (Tumor Necrosis Factor-alpha) RN - 73077K8HYV (Monocrotaline) RN - AGG2FN16EV (Simvastatin) SB - IM MH - Animals MH - Chemokine CCL2/metabolism MH - Disease Models, Animal MH - Hypertension, Pulmonary/chemically induced/*metabolism/*physiopathology MH - Interleukin-6/metabolism MH - Male MH - Monocrotaline/adverse effects MH - Rats MH - Rats, Sprague-Dawley MH - Simvastatin/*pharmacology MH - Tumor Necrosis Factor-alpha/metabolism EDAT- 2009/07/15 09:00 MHDA- 2009/11/18 06:00 CRDT- 2009/07/15 09:00 PHST- 2009/07/15 09:00 [entrez] PHST- 2009/07/15 09:00 [pubmed] PHST- 2009/11/18 06:00 [medline] PST - ppublish SO - Zhonghua Yi Xue Za Zhi. 2009 Mar 31;89(12):855-9.