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Expression of aphidicolin, FUdR and caffeine‐induced fragile sites in lymphocytes of healthy Turkish individuals

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Abstract

The expression of common fragile sites (c‐fra) and frequency of chromosomal aberrations were studied in peripheral lymphocytes of 50 healthy Turkish individuals (26 males and 24 females from 1 to 87 years of age) after induction with aphidicolin (APC), 5′‐fluorodeoxyuridine (FUdR), and caffeine. A correlation was seen between age and the frequency of chromosomal aberrations in APC and caffeine treated cultures, but there were no significant differences in the frequencies of chromosomal aberrations between males and females in any of the treatments. The mean frequency of aberrations induced by FUdR was significantly higher than that induced by APC and caffeine. A chromosome aberration is defined as a fragile site when present in 1% of the cells analyzed from each culture and in at least 50% of the individuals studied. Using these criteria, 12 c‐fra were observed in the three treatments: 1p21, 1q21, 2p11‐q11, 3p14, 4q31, 6q26, 7q22, 7q32, 8q24, 11q23, 16q23, and Xp22. Sites 3p14, 16q23, and Xp22 were the most frequently observed c‐fra, with only the frequency of Xp22 being significantly increased in females in APC treated cultures. The results of these studies are important as a base against which the effects of other clastogenic and environmental agents, as well as genetic background, can be compared.

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Authors and Affiliations

  1. Genetic and Teratology Research Center (GETAM), Division of Biomedical Sciences, Cerrahpasa Medical Faculty, Istanbul University, Istanbul, Turkey

    Gülgün S. Güven, Seniha Hacihanefioğlu & Asim Cenani

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  1. Gülgün S. Güven
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  2. Seniha Hacihanefioğlu
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  3. Asim Cenani
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Güven, G.S., Hacihanefioğlu, S. & Cenani, A. Expression of aphidicolin, FUdR and caffeine‐induced fragile sites in lymphocytes of healthy Turkish individuals. Genetica 105, 109–116 (1999). https://doi.org/10.1023/A:1003799927024

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