ISSN 2147-9720 | E-ISSN 2148-4279
Original Article
Genistein protects dermal fibrosis in bleomycin-induced experimental scleroderma
1 Department of Rheumatology, Fırat University Faculty of Medicine, Elazığ, Turkey  
2 Department of Pathology, Fırat University Faculty of Medicine, Elazığ, Turkey  
3 Department of Internal Medicine, Fırat University Faculty of Medicine, Elazığ, Turkey  
Eur J Rheumatol 2015; 2: 99-102
DOI: 10.5152/eurjrheum.2015.0110
Key Words: Scleroderma, dermal fibrosis, genistein
Abstract

Objective: Genistein, a phytoestrogen, has anti-oxidant, anti-inflammatory, and anti-angiogenic properties. The aim of the present study is to evaluate the protective effect of genistein in bleomycin (BLM)-induced dermal fibrosis.

 

Material and Methods: This study involved four groups of Balb/c mice (n=10 per group). Mice in three groups were administered BLM [100 μg/day in 100 μL phosphate-buffered saline (PBS)] subcutaneously for 4 weeks; the remaining (control) group received only 100 μL/day of PBS subcutaneously. PBS or BLM was injected into the shaved upper back. Two of the BLM-treated groups also received genistein (1 or 3 mg/kg/day, subcutaneously, to the dorsal front of neck). At the end of the fourth week, all mice were sacrificed and blood and tissue samples were obtained.

 

Results: The BLM applications increased the dermal thicknesses, tissue hydroxyproline contents, α-smooth muscle actin-positive cell counts, and led to histopathologically prominent dermal fibrosis. The genistein treatments decreased the tissue hydroxyproline contents and dermal thicknesses, in the BLM-injected mice.

 

Conclusion: Genistein has antifibrotic potential in BLM-induced dermal fibrosis model. However, its therapeutic potentials on human scleroderma require evaluation in future studies.

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