Y chromosome length related to fetal loss |
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Authors: | J. R. Westlake R. Robertson I. Leddet S. J. Funderburk R. S. Sparkes |
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Affiliation: | Departments of Psychiatry, UCLA School of Medicine, U.S.A;Departments of Pediatrics, UCLA School of Medicine, U.S.A;Departments of Medicine, UCLA School of Medicine, U.S.A |
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Abstract: | The Y/20 ratio (length of Y chromosome/length of chromosome 20) was examined among 216 males, 108 of whose wives had a history of repeated abortions (study group), and 108 who were mentally retarded (controls). There was no significant difference in frequency of long Y (Y/20 equal to or greater than 1) between the study group and controls. Also, there was the expected male: female ratio among normal living children of couples in the study group, and the Y/20 ratio was not significantly increased among fathers with abnormal male offspring. However, wives of long Y males were more likely to have at least one abnormal male birth, compared with other wives (this approached statistical significance, p less than 0.08). In addition, a significantly higher frequency of long Y was found in a subset of affected males whose wives had 2 or more spontaneous abortions plus some other abnormal pregnancy outcome. Although the findings reported here do not strongly support a causal relationship, they at least suggest an association between long Y chromosome and abnormal fetal development. |
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Keywords: | Chromosome translocation fetal loss spontaneous abortion Y chromosome |
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