تفاصيل الوثيقة نوع الوثيقة : بحث مدعم  عنوان الوثيقة : Antioxidant and hepatoprotective effects of Eucalyptus maculata. Antioxidant and hepatoprotective effects of Eucalyptus maculata.   الموضوع : Antioxidant and hepatoprotective effects  لغة الوثيقة : الانجليزية  المستخلص : BACKGROUND: Since phenolic compounds have been reported as effective antioxidants, this study was designed to assess the hepatoprotective and antioxidant activities of the chloroformic extract of the resinous exudate and its phenolic constituents obtained from the stems of Eucalyptus maculata. MATERIAL/METHODS: The chloroformic extract and pure phenolic isolates were evaluated for their antioxidant and hepatoprotective properties in mice and rats based on biochemical changes in serum and tissues as well as pathological changes in the liver and spleen. RESULTS: Acetaminophen (ACP) at a dose of 1 g/kg body weight produced 100% mortality in mice, while pretreatment of animals with the chloroformic extract (125 and 250 mg/kg) protected against the moralities by 66%. Pretreatment of rats with either the chloroformic extract (250 mg/kg) or any of the pure isolates (20 mg/kg) significantly reduced the increase in serum level of aspartate aminotransferase (AST), alanine aminotransferase (ALT), and alkaline phosphatase (ALP) produced by ACP (640 mg/kg). Pretreatment of animals with the chloroformic extract or its isolates also protected against ascorbic acid depletion in serum and kidney tissues induced by oral administration of paraquat (PQ) without modifying the serum level of glutathione (GSH) and glycogen content in liver tissue. CONCLUSIONS: The phenolic content of the chloroformic extract and the pure isolates produced an antioxidant activity which may be due to the formation of stable phenoxyl radical in addition to its effect through vitamin C.  سنة النشر : 2005 هـ 2005 م  عدد الصفحات : 5  تاريخ الاضافة على الموقع : Monday, February 15, 2010  الباحثون اسم الباحث (عربي) اسم الباحث (انجليزي) نوع الباحث المرتبة العلمية البريد الالكتروني عصام عبد الستار Abdel Sattar, Essam باحث مشارك دكتوراه   الملفات اسم الملف النوع الوصف  25421.pdf pdf   الرجوع إلى صفحة الأبحاث