PMID- 12133317 OWN - NLM STAT- MEDLINE DCOM- 20020913 LR - 20131121 IS - 1001-0939 (Print) IS - 1001-0939 (Linking) VI - 25 IP - 5 DP - 2002 May TI - [Losartan in the rat model of bleomycin-induced pulmonary fibrosis and its impact on the expression of monocyte chemoattractant protein-1 and basic fibroblast growth factor]. PG - 268-72 AB - OBJECTIVE: To study the effect of losartan on bleomycin-induced pulmonary fibrosis in rats and its possible mechanism. METHODS: Pulmonary fibrosis was induced in Wistar rats by intratracheal instillation of bleomycin. Then the rats received daily losartan 10 mg/kg (group L), prednisone 20 mg/kg (group P), or normal saline (group B) orally. Normal controls received normal saline both intratracheally and orally. Six rats in each group were sacrificed 3, 7, 14, 28 and 56 days after intratracheal instillation. Histological changes of the lungs were evaluated by HE stain, Masson's trichrome stain and sirius red stain. Collagen content of the lung tissue was assessed by hydroxyproline concentration. The mRNAs of monocyte chemoattractant protein-1 (MCP-1) and basic fibroblast growth factor (bFGF) were detected by reverse transcription-polymerase chain reaction (RT-PCR). Lung expression of MCP-1 and bFGF proteins was assessed by immunohistochemistry and the level of MCP-1 protein was further measured by ELISA. RESULTS: Pulmonary fibrosis of group L and group P was improved as compared with that of group B. Hydroxyproline concentrations of group L and group P were lower than that of group B. Protein expression of MCP-1 and bFGF in group L was lower than that in group B. CONCLUSION: Losartan alleviates bleomycin-induced pulmonary fibrosis in rats. Inhibiting the expressions of MCP-1 and bFGF in lung tissues may be one of the mechanisms. FAU - Fang, Xiangqun AU - Fang X AD - Department of Respiratory Disease, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, Beijing 100730, China. FAU - Zhu, Yuanjue AU - Zhu Y FAU - Hu, Xiaoling AU - Hu X FAU - Liu, Yongjian AU - Liu Y LA - chi PT - English Abstract PT - Journal Article PL - China TA - Zhonghua Jie He He Hu Xi Za Zhi JT - Zhonghua jie he he hu xi za zhi = Zhonghua jiehe he huxi zazhi = Chinese journal of tuberculosis and respiratory diseases JID - 8712226 RN - 0 (Anti-Inflammatory Agents) RN - 0 (Antihypertensive Agents) RN - 0 (Chemokine CCL2) RN - 0 (RNA, Messenger) RN - 103107-01-3 (Fibroblast Growth Factor 2) RN - 11056-06-7 (Bleomycin) RN - 9007-34-5 (Collagen) RN - JMS50MPO89 (Losartan) RN - VB0R961HZT (Prednisone) SB - IM MH - Administration, Oral MH - Animals MH - Anti-Inflammatory Agents/administration & dosage/therapeutic use MH - Antihypertensive Agents/administration & dosage/*therapeutic use MH - Bleomycin MH - Chemokine CCL2/*genetics/metabolism MH - Collagen/drug effects/metabolism MH - Drug Therapy, Combination MH - Enzyme-Linked Immunosorbent Assay MH - Fibroblast Growth Factor 2/*genetics/metabolism MH - Gene Expression Regulation, Neoplastic/drug effects MH - Losartan/administration & dosage/*therapeutic use MH - Lung/drug effects/metabolism/pathology MH - Male MH - Prednisone/administration & dosage/therapeutic use MH - Pulmonary Fibrosis/chemically induced/*drug therapy/genetics MH - RNA, Messenger/drug effects/genetics/metabolism MH - Rats MH - Rats, Wistar MH - Reverse Transcriptase Polymerase Chain Reaction MH - Treatment Outcome EDAT- 2002/07/23 10:00 MHDA- 2002/09/14 10:01 CRDT- 2002/07/23 10:00 PHST- 2002/07/23 10:00 [pubmed] PHST- 2002/09/14 10:01 [medline] PHST- 2002/07/23 10:00 [entrez] PST - ppublish SO - Zhonghua Jie He He Hu Xi Za Zhi. 2002 May;25(5):268-72.