全反式维甲酸对慢性酒精性肝损伤大鼠肝脏 TGF-b1、CTGF 和 Col1a1 表达的影响
http://www.100md.com 付 妤, 但自力, 唐望先, 晏 维, 潘志红,
付妤, 但自力, 潘志红,熊章鄂, 华中科技大学同济医学院附属同济医院消化内科湖北省武汉市 430030
唐望先, 晏维, 华中科技大学同济医学院附属同济医院肝病研究所湖北省武汉市 430030
付妤, 女, 1980-08-28生,湖北省武汉人, 汉族,华中科技大学同济医学院附属同济医院消化内科硕士,主要研究分子肝脏病学的基础与临床.
通讯作者: 但自力, 430030, 湖北省武汉市,华中科技大学同济医学院附属同济医院消化内科. email@example.com
收稿日期: 2005-11-08 接受日期: 2005-11-24
Effect of all-trans retinoic acid on expression ofTGF-b1, CTGF and Col1a1 in chronic alcoholicliver disease in rats
Yu Fu, Zi-Li Dan, Wang-Xian Tang, WeiYan, Zhi-Hong Pan, Zhang-E Xiong
Yu Fu, Zi-Li Dan, Zhi-Hong Pan,Zhang-E Xiong, Department of Digestology, Tongji Hospital of TongjiMedical College, Huazhong University of Science and Technology, Wuhan430030, Hubei Province, China
Wang-Xian Tang, Wei Yan, Institute of Liver Diseases, TongjiHospital of Tongji Medical College, Huazhong University of Science andTechnology, Wuhan 430030, Hubei Province, China
Correspondence to: Zi-Li Dan, Department of Digestology, TongjiHospital of Tongji Medical College, Huazhong University of Science andTechnology, Wuhan 430030, Hubei Province, China. firstname.lastname@example.org
Received: 2005-11-08 Accepted: 2005-11-24
AIM:To investigate the role of all-trans retinoic acid (ATRA)in the early stage of alcoholic liver fibrosis in rats, by observing itseffect on the expression of transforming growth factor b1(TGF-b1), connective tissue growthfactor (CTGF) and pro alpha 1 (Ⅰ)collagen (Col1a1).
METHODS:Twenty-four rats were randomly and averagely dividedinto three groups, named J, A, and N. The rats in group J was given themixture of ethanol and corn oil, and those in group A were added ATRA[0.15 mg/(kg.d)] after treatment with the same mixture for 8 wk. Theanimals in group N served as the controls, treating with the same amountof normal saline plus corn oil. All the mixtures were givenintragastrically. All the animals were killed after 16 weeks. Thehistological changes of liver tissues were observed under light andelectron microscope. The concentration of hepatic retinoic acid wasexamined using high-performance liquid chromatography (HPLC). Theexpression of TGF-b1, CTGF and Col1a1mRNA were measured by reverse transcription-polymerase chain reaction(RT-PCR). The protein expression of TGF-b1and CTGF were detected by immunohistochemistry.
RESULTS: Ethanol intake led to alcoholic hepatitis. The swellingmitochondria and expanding endoplasmic reticulum were observed underelectron microscope in the rats of group J. The damage was partiallyalleviated in group A. The concentration of hepatic retinoic acid wassignificantly decreased in group J than that in group N and A (76.7 ±29.1 pmol/g vs 182.6 ± 37.2, 182.8 ± 273.8 pmol/g, P <0.05), while it was not markedly different between group A and N. Theexpression of Col1a1 mRNA was 0.10 ± 0.02, 0.18 ± 0.03, and 0.14 ± 0.03in group N, J and A, respectively, and significant difference existedbetween either two groups (P < 0 ......