P Kheradmand; S Vallian; S Esmaeili Mahani
Abstract
- Aim:In this study, the effect of insulin was investigated in induction of drug resistance to doxorubicin in MCF-7 breast cancer cell line. Material and method: MCF-7 cells were pretreated with 10 nM insulin for 48 and 72 hours, respectively. Then, different doses of doxorubicin (1, 5 and 10 μM) ...
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- Aim:In this study, the effect of insulin was investigated in induction of drug resistance to doxorubicin in MCF-7 breast cancer cell line. Material and method: MCF-7 cells were pretreated with 10 nM insulin for 48 and 72 hours, respectively. Then, different doses of doxorubicin (1, 5 and 10 μM) were added for an additional 24 hours and cell viability was determined by MTT assay. Results: Doxorubicin had antitumor effects by reducing the cell survival in a dose-dependent manner. However, the addition of 10 μM doxorubicin in the insulin-treated cells for 72 hours induced significant drug resistance (p < 0.01). Conclusion: The results revealed that insulin could significantly cause the doxorubicin resistance in a time-dependent manner in MCF-7 cells.
Abstract
Aim: Doxorubicin (DOX) is one of the most widely used antineoplasic drugs although it is toxic for different parts of the body like reproductive organs. The aim of this study was to investigate the protective effect of nano-Zinc oxide on doxorubicin-induced reproductive toxicity. Material and Methods: ...
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Aim: Doxorubicin (DOX) is one of the most widely used antineoplasic drugs although it is toxic for different parts of the body like reproductive organs. The aim of this study was to investigate the protective effect of nano-Zinc oxide on doxorubicin-induced reproductive toxicity. Material and Methods: Adult male Wistar rats were divided in four groups including one control and three experimental groups. The control group received Saline (i.p). The experimental groups received Doxorubicin (6 mg/kg), nano-Zinc oxide (5 mg/kg) and Doxorubicin following nano-Zinc oxide respectively. Treatment was performed for 3 days. 28 days after treatment, histological changes in testis were assessed. Results: The DOX group showed disintegrated germinal epithelium, hypoplasia and deformation of cells, and increased interstitial space. Spermatocyte, spermatid and spermatozoid numbers as well as Leydig cell numbers were reduced. Also Dox increased the number of sloughing tubules while it decreased tubule differentiation index (TDI) and spermiation index (SPI). Nano-Zinc oxide treatment resulted in significant improvement of DOX-induced disorders. Conclusion: The protective effect of nano-Zinc Oxide is illuminated in DOX-induced male reproductive system toxicity.
