One hundred and seventy eight males resident in an institution for the mentally retarded were screened clinically for the presence of macroorchidism, using the standard orchidometer. In this way 52 males with a testicular volume of 25 ml and over were found. Of these, 11 had pronounced macroorchidis
Frequency of the fragile X syndrome in Japanese mentally retarded males
β Scribed by T. Arinami; I. Kondo; S. Nakajima
- Publisher
- Springer
- Year
- 1986
- Tongue
- English
- Weight
- 434 KB
- Volume
- 73
- Category
- Article
- ISSN
- 0340-6717
No coin nor oath required. For personal study only.
β¦ Synopsis
Among 243 institutionalized mentally retarded males in Japan, 13 patients (5.3%) with the fra(X)(q27) from nine families were detected. These 13 patients accounted for 8.6% of 152 male inmates with unknown causes of mental retardation in the population. One out of nine pedigrees had an apparently unaffected male transmitter of this disorder. Our data agree with the frequencies of the fra(X) syndrome in various retarded populations, most of which were Caucasians, suggesting that the prevalence of the fra(X) syndrome in Japanese is not significantly different from those in Caucasians.
π SIMILAR VOLUMES
Results of cytogenetic studies, performed in a group of 201 institutionalized mentally retarded males, are presented. At least two cytogenetic methods for eliciting the Xq27.3 fragile site, recommended by the Fourth International Workshop on the Fra X Syndrome were used. A subgroup of 67 out of 201