Expression of transforming growth factor-alpha and its receptor during the process of human liver cirrhosis
- VernacularTitle:α-转化生长因子及其受体在人肝脏组织硬化过程中的表达特征
- Author:
Qing QIAO
;
Jing ZHANG
;
Wenliang WANG
;
Qing LI
- Publication Type:Journal Article
- From:
Chinese Journal of Tissue Engineering Research
2007;11(2):387-389
- CountryChina
- Language:Chinese
-
Abstract:
BACKGROUND: The expression and significance of transforming growth factor-alpha (TGF-α) and epidermal growth factor receptor (EGF-R) in different diseases are different.OBJ ECTTVE: To investigate the expression of TGF-α and EGF-R in human liver cirrhosis tissues.DESIGN : Non-randomized controlled trial.SETTING: Department of General Surgery, Tangdu Hospital, Fourth Military Medical University of Chinese PLA.MATERIALS: This trial was carried out in the Department of Pathology, Xijing Hospital, Fourth Military Medical University of Chinese PLA during March 2003 to May 2004. Sixty-three samples of human liver cirrhosis tissue were obtained from Department of General Surgery, Xijing Hospital, Fourth Military Medical University of Chinese PLA (Informed consents were obtained). Five human normal liver tissues were obtained form autopsy in Department of Pathology, Fourth Military Medical University of Chinese PLA (patients with liver diseases were excluded).METHODS: Sixty-three samples of human liver cirrhosis specimens and five human normal liver tissues were studied with immunohistochemical method and in situ hybridization technique. The positive rates of TGF-α and EGF-R were calculated and managed statistically.MAIN OUTCOME MEASURE: Detection of the expressions of TGF-α and EGF-R in liver cirrhosis tissues were detected with immunohistochemical method and in situ hybridization technique.RESULTS: The expression rate of TGF-α and EGF-R in 63 samples of human liver cirrhosis tissues was 84% (53/63)and 52% (33/63) respectively. These positive granules were brown and most of them were in cytoplasm of hepatocytes.There was significantly positive correlation between TGF-α and EGF-R (r =0.32,P ＜ 0.05). In five normal liver tissues,TGF-α and EGF-R were not detectable in hepatocytes and bile ducts. In situ hybridization showed the levels of TGF-αmRNA and EGF-R mRNA were higher (86%, 54%) than those of immunohistochemistry. There was no significant difference between two detective methods (P＞0.05).CONCLUSrON: Liver cirrhosis might be under the autocrine regulation of TGF-α/EGF-R. Increasing expression of TGF-αand EGF-R might be one of important factors in liver cirrhosis pathogenesis.
