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- W2073036161 abstract "Many studies have been published establishing the background frequencies of disomic and diploid sperm in normal men by fluorescence in situ hybridization (FISH) analysis, with highly significant variance among the reports. Besides interdonor heterogeneity and differences in the experimental protocols used, the question of inherent differences in chromosome malsegregation and meiotic arrest among different geographic and ethnic groups of donors has been raised. In this study, multicolor FISH analysis was carried out on semen samples from 10 nonsmoking, nondrinking Chinese men from the People's Republic of China. The results were compared to FISH data on 10 nonsmoking, nondrinking Canadians under the same experimental conditions, in the same laboratory. A total of 200,497 sperm was scored in the Chinese donors and compared to 202,320 sperm from Canadian donors. Approximately 10,000 sperm per chromosome probe per donor were analyzed. The mean hybridization efficiency was 99.99%. The frequencies of X-bearing and Y-bearing sperm were not significantly different from the expected 50% for each individual and for the combined data from all donors (49.73% vs. 49.46%, P = 0.3946). The mean disomy frequencies (range) were 0.07% (0.02%-0.12%) for chromosome 13, 0.18% (0.09%-0.19%) for chromosome 21, 0.05% (0. 01%-0.09%) for 24,XX, 0.02% (0.01%-0.06%) for 24,YY, and 0.29% (0. 13%-0.49%) for 24,XY. The mean diploidy frequency (range) was 0.38% (0.22%-0.73%) for 13-21 hybridizations and 0.32% (0.07%-0.70%) for XY hybridizations. Highly significant interdonor heterogeneity was found for diploidy (P = 0.0000) and for XY disomy (P = 0.0011), but no age effect was observed in any category of disomic or diploid sperm. The data reported here show no marked differences in disomy and diploidy frequencies between the mainland Chinese and Canadian groups, if donor heterogeneity is taken into account." @default.
- W2073036161 created "2016-06-24" @default.
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- W2073036161 date "2000-01-01" @default.
- W2073036161 modified "2023-10-02" @default.
- W2073036161 title "Spontaneous frequencies of aneuploid and diploid sperm in 10 normal Chinese men: assessed by multicolor fluorescence in situ hybridization" @default.
- W2073036161 cites W1982932775 @default.
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- W2073036161 doi "https://doi.org/10.1159/000015668" @default.
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