Volume 9, Issue 3 (Vol.9 No.3 Oct 2020)                   rbmb.net 2020, 9(3): 338-347 | Back to browse issues page


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Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, I. R. Iran & Department of Clinical Biochemistry, School of Medicine, Babol University of Medical Sciences, Babol, I. R. Iran.
Abstract:   (552 Views)
Background: Some recent studies have reported anti-tumor activity for Thymol, but the findings are inconsistent. This study aimed to investigate and compare Thymolchr('39')s effects on MCF-7 cancer cells and fibroblasts while treated with tert-Butyl hydroperoxide (t-BHP).

Methods: In the pre-treatment, MCF-7 and fibroblast cells were treated with various Thymol concentrations and incubated for 24 h. Then, t-BHP was added to a final concentration of 50 μM, and the cells were incubated for one h. In the post-treatment, cells were incubated first with 50 μM t-BHP for one h and then treated with Thymol. Cell viability was tested by 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Thymolchr('39')s antioxidant capacity was measured by DPPH and FRAP assays, and lipid peroxidation levels were determined by the TBARS method.

Results: The thymol effects were dose-dependent, and despite their antioxidant properties, at concentrations of 100 µg/ml or more, increased t-BHP toxicity and reduced cancer cell viability. MTT assay result showed that pre-treatment and post-treatment with Thymol for 24 hours effectively reduced MCF-7 and fibroblast cell viability compared with the untreated control group. Both pre- and post-treatment of Thymol, normal fibroblast cell viability was significantly greater than that of the MCF-7 cells.

Conclusions: Our finding showed that Thymol appears to be toxic to MCF-7 cells at lower concentrations than fibroblasts after 24 hours of incubation. Pre-treatment with Thymol neutralized the oxidative effect of t-BHP in fibroblasts but was toxic for MCF-7 cells.
Full-Text [PDF 269 kb]   (152 Downloads)    
Type of Article: Original Article | Subject: Biochemistry
Received: 2020/06/18 | Accepted: 2020/06/21 | Published: 2020/12/1

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