التفاصيل البيبلوغرافية
| العنوان: |
The chemopreventive effect of Ginkgo bilobaand Silybum marianumextracts on hepatocarcinogenesis in rats |
| المؤلفون: |
El Mesallamy, Hala O, Metwally, Nadia S, Soliman, Mahmoud S, Ahmed, Kawkab A, Abdel Moaty, Mai M |
| بيانات النشر: |
BioMed Central Ltd. |
| سنة النشر: |
2011 |
| المجموعة: |
BioMed Central |
| مصطلحات موضوعية: |
Hepatocellular carcinoma, Ginkgo biloba, Silybum marianum, N-nitrosodiethylamine, Antioxidants, Vascular endothelial growth factor, Comet assay |
| الوصف: |
Background/objective This study was designed to evaluate the potential chemopreventive activities of Ginkgo biloba extract (EGb) and Silybum marianum extract (silymarin) against hepatocarcinogenesis induced by N-nitrosodiethylamine (NDEA) in rats. Methods Rats were divided into 6 groups. Group 1 served as normal control rats. Group 2 animals were intragastrically administrated NDEA at a dose of 10 mg/kg five times a week for 12 weeks to induce hepatocellular carcinoma (HCC). Groups 3 and 4 animals were pretreated with silymarin and EGb respectively. Groups 5 and 6 animals were posttreated with silymarin and EGb respectively. The investigated parameters in serum are alanine aminotransferase (ALT), aspartate aminotransferase (AST), gamma glutamyltransferase (GGT) and vascular endothelial growth factor (VEGF). The investigated parameters in liver tissue are malondialdehyde (MDA), glutathione (GSH), superoxide dismutase (SOD), glutathione peroxidase (GPx), glutathione reductase (GR) and comet assay parameters. Results In NDEA group, MDA level was elevated with subsequent decrease in GSH level and SOD, GPx and GR activities. In addition, NDEA group revealed a significant increase in serum ALT, AST and GGT activities and VEGF level. Furthermore, NDEA administrated animals showed a marked increase in comet assay parameters. These biochemical alterations induced by NDEA were confirmed by the histopathological examination of rat livers intoxicated with NDEA that showed an obvious cellular damage and well differentiated HCC. In contrast, silymarin+NDEA treated groups (3&5) and EGb+NDEA treated groups (4&6) showed a significant decrease in MDA level and a significant increase in GSH content and SOD, GPx and GR activities compared to NDEA group. Silymarin and EGb also beneficially down-regulated the increase in serum ALT, AST, GGT activities and VEGF level induced by NDEA. In addition, silymarin and EGb significantly decreased comet assay parameters. Histopathological examination of rat livers treated with ... |
| نوع الوثيقة: |
other/unknown material |
| اللغة: |
English |
| Relation: |
http://www.cancerci.com/content/11/1/38 |
| الاتاحة: |
http://www.cancerci.com/content/11/1/38 |
| Rights: |
Copyright 2011 El Mesallamy et al; licensee BioMed Central Ltd. |
| رقم الانضمام: |
edsbas.5AA644C2 |
| قاعدة البيانات: |
BASE |