Phenotypic spectrum of 45,X/46,XY males with a ring Y chromosome and bilaterally descended testes  

Oleh:

Layman, Lawrence C. ; Tho, Sandra P.T.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Fertility and Sterility (keterangan: ada di ClinicalKey) vol. 91 no. 03 (Mar. 2009), page 791-797 .
Topik: Mixed gonadal dysgenesis; 45; X/46; XY; ring Y chromosome; azoospermia; severe oligospermia

Ketersediaan

Perpustakaan FK Nomor Panggil: F02.K.2009.01 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Objective To characterize the phenotypic spectrum of males with bilaterally descended testes and a 45,X/46,X,(r)Y karyotype. Design Retrospective review of patient records; cytogenetic and molecular analysis. Setting Tertiary medical center setting. Participant(s) Five males, two prepubertal and three postpubertal, with a 45,X/46,X(r)Y karyotype and bilaterally descended testes. Intervention(s) Linear growth evaluation, testicular endocrine and exocrine studies, cytogenetic and molecular analysis on each patient. Main Outcome Measure(s) Clinical phenotype versus genotype. Result(s) Both prepubertal males had short stature and low testosterone. All three adults had normal puberty and normal testosterone levels. Two of the adults (one with short stature and one with normal stature) had elevated gonadotropins and azoospermia. The third adult had normal stature, severe oligospermia, normal gonadotropins, and normal serum testosterone. Conclusion(s) The phenotypic spectrum of males with a 45,X/46,X(r)Y karyotype and bilaterally descended testes varies greatly from males with short stature and spermatogenic failure to males without short stature and less severely affected spermatogenesis. This broad spectrum of phenotypic findings needs to be taken into account when the clinical geneticist encounters a prenatal diagnosis of a 45,X/46,X(r)Y karyotype. This information will also be helpful for pediatric and reproductive endocrinologists in counseling males with bilaterally descended testes and a 45,X/46,X(r)Y karyotype.

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