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Mutagenic study of benzimidazole derivatives with (+S9) and without (−S9) metabolic activation


Citation

Azahar, Nurul Hafizan and Ab Dullah, Siti Soleha and Abdullah, Rozaini and Ahmat, Norizan and Md. Akim, Abdah and Ab. Hamid, Hasiah (2019) Mutagenic study of benzimidazole derivatives with (+S9) and without (−S9) metabolic activation. International Journal of Molecular Sciences, 20 (18). art. no. 4324. pp. 1-10. ISSN 1661-6596; ESSN: 1422-0067

Abstract

Benzimidazole derivatives have a diverse range of biological activities, including antiulcer, antihypertensive, antiviral, antifungal, anti-inflammatory, and anticancer. Despite these activities, previous studies have revealed that some of the derivatives can induce mutations. This study aimed to screen for potential mutagenic activities of novel benzimidazole derivatives 1–4 using the Ames test and to study their structure–activity relationship (SAR). An Ames test was carried out on two strains of Salmonella typhimurium (TA98 and TA100) in the absence and presence of metabolic activation. Genetic analysis was performed prior to the Ames test to determine the genotypes of the bacterial tester strains. Both bacterial strains showed dependency on histidine with the presence of rfa mutation, uvrB deletion, and plasmid pKM101. Further, all derivatives tested showed no mutagenic activity in the absence of metabolic activation in both tester strains. However, in the presence of metabolic activation, compound 1 appeared to induce mutation at 2.5 µg/plate when tested against the TA98 strain. These results suggest that the absence of the -OH group at the ortho-position over the phenyl ring might be the cause of increased mutagenic activity in compound 1. Additionally, the presence of mutagenic activity in compound 1 when it was metabolically activated indicates that this compound is a promutagen.


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Official URL or Download Paper: https://www.mdpi.com/1422-0067/20/18/4324

Additional Metadata

Item Type: Article
Divisions: Faculty of Medicine and Health Science
DOI Number: https://doi.org/10.3390/ijms20184324
Publisher: MDPI
Keywords: Benzimidazole; Ames test; Structure–activity relationship (SAR)
Depositing User: Nabilah Mustapa
Date Deposited: 04 May 2020 16:09
Last Modified: 04 May 2020 16:09
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3390/ijms20184324
URI: http://psasir.upm.edu.my/id/eprint/38267
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