417–2α-Tocopherol and ascorbic acid attenuates the ribavirin-induced decrease of eicosapentaenoic acid in erythrocyte membrane in chronic hepatitis C patients

Autor: Yuichi Hara, Yuhki Yamaguchi, Keisuke Hino, Michiari Okuda, Kohki Yutoku, Fenyu Ren, Kiwamu Okita, Takakazu Furutani, Yasuko Murakami, Ayako Nagai, Akira Kitase, Misako Okita, Satoyoshi Yamashita
Rok vydání: 2006
Předmět:
Zdroj: Journal of Gastroenterology and Hepatology. 21:1269-1275
ISSN: 1440-1746
0815-9319
DOI: 10.1111/j.1440-1746.2006.04378.x
Popis: Background: Oxidative damage of the erythrocyte membrane plays an important role in ribavirin-induced anemia. The purpose of the present paper was to assess whether supplementation of α-tocopherol and ascorbic acid (vitamins) causes changes in the erythrocyte membrane fatty acid composition during interferon and ribavirin combination therapy for chronic hepatitis C patients. Methods: Fatty acid compositions in erythrocyte membrane phospholipids were determined by gas chromatography at 0, 2, 4, 8 weeks, and at the end of combination therapy (26 weeks) for interferon with ribavirin in 32 patients with chronic hepatitis C who were randomized to receive vitamins or not (controls). Results: Good compliance with orally administered vitamins and ribavirin were confirmed by their concentrations in erythrocytes or plasma. The hemoglobin level was negatively correlated with the ribavirin concentration at 8 weeks (r = 0.59, P = 0.01) after initiation of therapy in controls, but not in the vitamin group. Among the 26 kinds of fatty acids analyzed, only eicosapentaenoic acid (EPA) significantly decreased at 8 weeks after initiation of therapy (P = 0.03) and at the end of therapy (P = 0.004) in controls. Vitamins did not inhibit ribavirin-induced anemia, but attenuated the decrease of EPA in erythrocytes. The EPA level was negatively correlated with the drop in hemoglobin levels at 8 weeks after initiation of therapy in controls (r = 0.58, P = 0.015), but not in the vitamin group. Conclusions: Supplementation of α-tocopherol and ascorbic acid attenuates the ribavirin-induced decrease of EPA in erythrocyte membrane phospholipids in chronic hepatitis C patients.
Databáze: OpenAIRE
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