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- W2143444811 abstract "A common polymorphism at codon 72 (Arg72Pro) of the p53 gene, a gene which codes for a tumor-suppressor protein with both antiproliferative and pro-apoptotic actions, has recently been reported to be a risk factor for coronary luminal narrowing after angioplasty. However, the association of the polymorphism with coronary artery disease (CAD) risk has not been studied. We evaluated the distribution of the Arg72Pro genotype in 250 patients, 180 with angiographically documented CAD and 70 with normal coronary angiography, by using polymerase chain reaction amplification of patient DNA followed by restriction enzyme digestion. We also examined the association between the Arg72Pro genotype and chromosome damage in 82 male patients (60 CAD and 22 no-CAD) by the micronucleus (MN) test in human lymphocytes, a sensitive assay for chromosome breakage and aneuploidy. The frequencies of Pro/Pro, Pro/Arg, and Arg/Arg genotypes in CAD patients were not significantly different from those who were CAD-free (chi(2) = 0.20, P = 0.90) and not significantly associated with the extent and severity of CAD. A significant increase in MN frequency was observed in relation to smoking status (8.4 +/- 0.6, 11.9 +/- 1 and 12.0 +/- 1.6, for non smokers, ex-smokers and smokers, respectively; P = 0.02). Moreover, diabetic patients showed higher levels of MN than normal patients (13.5 +/- 1.4 vs. 9.6 +/- 0.5, P = 0.0025). Also, MN frequency was significantly higher in CAD patients than in no-CAD patients (11.2 +/- 0.7 vs. 8.0 +/- 0.9, P = 0.02) and increased with the number of affected vessels (9.3 +/- 0.1, 12.2 +/- 1.5 and 12.5 +/- 1.3 for one-, two-, and three-vessel disease, respectively; P = 0.02). However, there were no associations between MN frequency and the Arg72Pro polymorphism. Although there appears to be an association between CAD and MN frequency, our results indicate that the Arg72Pro polymorphism does not have a significant impact on CAD or MN frequencies." @default.
- W2143444811 created "2016-06-24" @default.
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- W2143444811 date "2002-01-01" @default.
- W2143444811 modified "2023-09-26" @default.
- W2143444811 title "p53 codon 72 polymorphism in coronary artery disease: No evidence for association with increased risk or micronucleus frequency" @default.
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- W2143444811 doi "https://doi.org/10.1002/em.10098" @default.
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