Cryptorchidism concordance in monozygotic and dizygotic twin brothers, full brothers, and half-brothers  

Oleh:

Jensen, Morten Sondergaard ; Toft, Gunnar ; Thulstrup, Ane Marie ; Henriksen, Tine Brink ; Olsen, Jorn

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Fertility and Sterility (keterangan: ada di ClinicalKey) vol. 93 no. 01 (Jan. 2010), page 124-129.
Topik: Cryptorchidism; orchiopexy; concordance rate; twins; half-siblings; genes; environment

Ketersediaan

Perpustakaan FK Nomor Panggil: F02.K.2010.01 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

Lihat Detail Induk

Isi artikel

Objective To study concordance rates of cryptorchidism (undescended testis) in pairs of boys with varying family structure, to evaluate the risk contribution from the intrauterine environment and genetic factors. Design Population based study of 1,024,500 Danish boys born from January 1, 1973 to December 31, 2004. Classic twin method and computerized square dance design. Setting Hospitals and outpatient clinics. Patient(s) Six groups of boy pairs: boys with no relation, paternal half-brothers, maternal half-brothers, full brothers, dizygotic twin brothers, and monozygotic twin brothers. Intervention(s) Observational study. Main Outcome Measure(s) Status on each individual regarding cryptorchidism and orchiopexy from the Danish National Patient Register. Result(s) Concordance rates of cryptorchidism in the groups were as follows: boys with no relation 3.2% (95% confidence interval 2.7%-3.6%), paternal half-brothers 3.4% (2.3%-4.7%), maternal half-brothers 6.0% (4.5%-7.7%), full brothers 8.8% (8.3%-9.8%), dizygotic twin brothers 24.1% (16.0%-33.6%), and monozygotic twin brothers 27.3% (15.5%-41.2%). Conclusion(s) The concordance rate was higher in maternal than in paternal half-brothers, and much higher but of equal magnitude in both twin groups. The findings strongly support that the intrauterine environment and maternal inheritance are contributing to the occurrence of cryptorchidism.

Opini Anda

Klik untuk menuliskan opini Anda tentang koleksi ini!

Kembali