Title:Reduction of Genotoxicity of Carbamazepine to Human Lymphocytes by
Pre-treatment with Vitamin B12
Volume: 16
Author(s): Eman K. Hendawi, Omar F. Khabour*, Laith N. Al-Eitan and Karem H. Alzoubi
Affiliation:
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, Jordan University
of Science and Technology, Irbid 22110, Jordan
Keywords:
Carbamazepine, vitamin B12, sister chromatid exchanges, DNA damage, chromosomal aberrations, genotoxicity, white lymphocytes.
Abstract:
Background: Carbamazepine (CBZ) is widely used as an anti-epileptic drug. Vitamin
B12 has been shown to protect against DNA damage caused by several mutagenic agents.
Objective: This study aimed to investigate the effect of vitamin B12 on CBZ-induced genotoxicity
in cultured human lymphocytes.
Methods: Sister chromatid exchanges (SCEs) and chromosomal aberrations (CAs) genotoxic assays
were utilized to achieve the study objective.
Results: The results showed significantly higher frequencies of CAs and SCEs in the CBZ-treated
cultures (12 μg/mL) compared to the control group (P<0.01). The genotoxic effects of CBZ were
reduced by pre-treatment of cultures with vitamin B12 (13.5μg/ml, P<0.05). Neither CBZ nor vitamin
B-12 showed any effects on mitotic and proliferative indices.
Conclusion: CBZ is genotoxic to lymphocyte cells, and this genotoxicity can be reduced by vitamin
B12.