PMID- 21141598 OWN - NLM STAT- MEDLINE DCOM- 20121001 LR - 20101213 IS - 1000-6834 (Print) IS - 1000-6834 (Linking) VI - 24 IP - 3 DP - 2008 Aug TI - [Roles of NRF2 regulating gamma-glutamylcysteine synthetase in lung of rats with chronic obstructive pulmonary disease]. PG - 339-42 AB - AIM: To investigate the expression and relationship of gamma-glutamylcysteine synthetase (gamma-GCS) and NF-E2-related factor2 (NRR2) in lung of rat with chronic obstructive pulmonary disease (COPD)in order to elucidate the possible important role of gamma-GCS and NRF2 in pathogenesis of COPD. METHODS: The rat COPD model was established by intratracheal instillation of lipopolysaccharide twice and exposed to cigarette smoke daily. The gamma-GCS activity was measured, the expression of gamma-GCS mRNA in lung was examined by in situ hybridization (ISH) and reverse transcription-polymerase chain reaction (RT-PCR), the protein expressions of NRF2, gamma-GCS in lung were detected by immunohistochemical (IH) and Western blot respectively. RESULTS: The gamma-GCS activity was higher in COPD group than that in control group. The expressions of gamma-GCS mRNA in COPD group was stronger than those in control group. ISH showed that the gamma-GCS mRNA was expressed in alveolar epithelium and bronchial smooth muscle cell in COPD. The protein expressions of NRF2, gamma-GCS were significantly higher than the control group. IH showed that NRF2, gamma-GCS proteins were expressed in alveolar and bronchial epithelium in the COPD group. There was a positive correlation between NRF2 and gamma-GCS and gamma-GCS mRNA. CONCLUSION: NRF2 may play an important role in the mechanism of COPD oxidative stress vis up-regulation of gamma-GCS. FAU - Chen, Lin AU - Chen L AD - Department of Respiratory Medicine, Geriatric Hospital of Hunan Province, Changsha 410001, China. FAU - Dai, Ai-Guo AU - Dai AG FAU - Hu, Rui-Cheng AU - Hu RC LA - chi PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Zhongguo Ying Yong Sheng Li Xue Za Zhi JT - Zhongguo ying yong sheng li xue za zhi = Zhongguo yingyong shenglixue zazhi = Chinese journal of applied physiology JID - 9426407 RN - 0 (NF-E2-Related Factor 2) RN - 0 (Nfe2l2 protein, rat) RN - EC 6.3.2.2 (Glutamate-Cysteine Ligase) SB - IM MH - Animals MH - Glutamate-Cysteine Ligase/*metabolism MH - Lung/*metabolism MH - Male MH - NF-E2-Related Factor 2/*metabolism MH - Oxidative Stress MH - Pulmonary Disease, Chronic Obstructive/*metabolism/*physiopathology MH - Random Allocation MH - Rats MH - Rats, Wistar EDAT- 2008/08/01 00:00 MHDA- 2012/10/02 06:00 CRDT- 2010/12/15 06:00 PHST- 2010/12/15 06:00 [entrez] PHST- 2008/08/01 00:00 [pubmed] PHST- 2012/10/02 06:00 [medline] PST - ppublish SO - Zhongguo Ying Yong Sheng Li Xue Za Zhi. 2008 Aug;24(3):339-42.