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Published on: May 4, 2016
Effect of antiandrogen treatment on chemical hepatocarcinogenesis in rats
B Matsuura1, Y Taniguchi, Y Ohta
1Third Department of Internal Medicine, Ehime University School of Medicine, Japan.
Abstract:
We studied the effect of antiandrogen treatment on the Solt-Farber model of hepatocarcinogenesis in male Sprague-Dawley rats. The size and number of the liver tumors were reduced by various antiandrogen treatments (orchiectomy, an LH-RH analog, and chlormadinone acetate). In addition, the proportion of poorly differentiated carcinomas was decreased by the antiandrogen treatment, while that of well-differentiated trabecular or glandular carcinomas was increased. The bromodeoxyuridine labeling index of the tumor cells was significantly decreased after the antiandrogen treatment. The expression of rat androgen receptor mRNA in carcinoma tissue was increased when compared to control liver tissue, and was decreased after the antiandrogen treatment. Orchiectomy had the greatest inhibitory effect on carcinoma, although the effect of chemical orchiectomy using an LH-RH analog was almost similar to that of orchiectomy. These results suggest that the clinical application of antiandrogen therapy for human hepatocellular carcinoma might be possible in the future.
Insights
Antiandrogen therapy significantly reduced liver tumor size and number in a rat model. This treatment also improved tumor differentiation and decreased cancer cell proliferation, suggesting potential for human hepatocellular carcinoma treatment.
Area of Science:
- Oncology
- Endocrinology
- Hepatology
Background:
- Hepatocellular carcinoma (HCC) is a major global health concern.
- Androgen receptor signaling plays a role in liver cancer development.
- Effective therapeutic strategies for HCC remain limited.
Purpose of the Study:
- To investigate the efficacy of antiandrogen treatments in suppressing hepatocarcinogenesis.
- To evaluate the impact of antiandrogens on tumor characteristics and cell proliferation.
- To explore the role of androgen receptors in HCC progression.
Main Methods:
- Utilized the Solt-Farber rat model for induced hepatocarcinogenesis.
- Administered various antiandrogen treatments: orchiectomy, LH-RH analog, and chlormadinone acetate.
- Assessed tumor size, number, differentiation, bromodeoxyuridine labeling index, and androgen receptor mRNA expression.
Main Results:
- Antiandrogen treatments significantly reduced liver tumor size and number.
- A decrease in poorly differentiated carcinomas and an increase in well-differentiated ones were observed.
- Bromodeoxyuridine labeling index and androgen receptor mRNA expression in tumors were significantly reduced.
Conclusions:
- Antiandrogen therapy demonstrates potent inhibitory effects on experimental liver cancer.
- Orchiectomy and LH-RH analog showed the most significant tumor suppression.
- These findings support the potential clinical application of antiandrogen therapy for human HCC.
