{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,4,24]],"date-time":"2025-04-24T04:38:24Z","timestamp":1745469504497,"version":"3.40.4"},"reference-count":23,"publisher":"S. Karger AG","issue":"4","license":[{"start":{"date-parts":[[2010,1,1]],"date-time":"2010-01-01T00:00:00Z","timestamp":1262304000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"},{"start":{"date-parts":[[2010,1,1]],"date-time":"2010-01-01T00:00:00Z","timestamp":1262304000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Chemotherapy"],"published-print":{"date-parts":[[2010]]},"abstract":"<jats:p>&lt;i&gt;Background:&lt;\/i&gt; Vitamin C is a water-soluble chain-breaking antioxidant that has beneficial effects on lipid-metabolizing enzymes. In the present study, the level of thiobarbituric acid (TBA) substances and antioxidant enzymes such as catalase, superoxide dismutase (SOD), glutathione peroxidase and glutathione-S-transferase were assayed. &lt;i&gt;Methods:&lt;\/i&gt; The level of TBA substances and antioxidant enzymes was determined in plasma and RBC hemolysates, respectively, in 60 postmenopausal women with breast cancer. &lt;i&gt;Results:&lt;\/i&gt; The data obtained from the study revealed that the levels of TBA and the antioxidant enzymes catalase, SOD, glutathine peroxidase and glutathine-S-transferse were significantly normalized by vitamin C treatment in the RBC hemolysate. &lt;i&gt;Conclusion:&lt;\/i&gt; The results compared vitamin C-treated breast cancer patients with normal individuals and showed that co-administration of vitamin C is more beneficial in breast cancer patients treated with 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