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• W2905256819 abstract "Sickle cell anemia (SCA) is a hereditary hematological disease that is characterized by a point mutation in the beta globin S gene and has no specific treatment; hydroxyurea (HU) is the only therapeutic agent used in clinical practice. In the present study, we evaluated the deoxyribonucleic acid (DNA) damage index (DI) and chromosomal damage in leukocytes of adult patients with SCA with and without HU. The DI was assessed by the comet assay and chromosomal damage by the leukocyte micronucleus test of adult patients treated with HU (SCA-HU) and without the use of HU (SCA-NoHU). This is a cross-sectional study with 77 patients with SCA who attended a referral hospital in Fortaleza, Brazil. The control group (CG) consisted of 58 reportedly healthy individuals. The comparisons of means were performed by analysis of variance and Tukey's post-test. Values of P < 0.05 were considered statistically significant. SCA-NoHU patients had statistically higher DI values and a statistically significantly higher frequency of micronuclei compared to the CG. In addition, HU treatment accentuated DNA lesions by significantly increasing both parameters in treated patients (SCA-HU). HU potentiates DNA damage and the occurrence of chromosomal damage, which may promote genomic instability, mutation occurrence, and carcinogenesis. Studies are needed to evaluate the involved pathways, repair mechanisms, and the clinical impact that such damage can cause. Environ. Mol. Mutagen. 60:302-304, 2019. © 2018 Wiley Periodicals, Inc." @default.
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• W2905256819 date "2018-12-07" @default.
• W2905256819 modified "2023-10-16" @default.
• W2905256819 title "Is chronic use of hydroxyurea safe for patients with sickle cell anemia? An account of genotoxicity and mutagenicity" @default.
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• W2905256819 doi "https://doi.org/10.1002/em.22260" @default.
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