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Finger length predicts sperm retrieval and pregnancy success after IVF/ICSI.
2004 JAN 1 - (NewsRx.com & NewsRx.net) -- Finger length predicts sperm retrieval and pregnancy success after IVF/ICSI.
According to published research from England, "the differentiation of the urogenital system and the appendicular skeleton in vertebrates is under the control of Homeobox (Hox) genes. It has been shown that this common control of digit and gonad differentiation has connected the pattern of digit formation to spermatogenesis and prenatal hormone concentrations in males. We wished to establish whether digit patterns, particularly the ratio between the lengths of the second and fourth digit in males (2D:4D), was related to spermatogenesis and, more specifically, the presence of spermatozoa in testicular biopsies from azoospermic men undergoing surgical sperm retrieval."
"Forty-four men were recruited, of whom 16 were diagnosed with nonobstructive azoosperma and 4 with congenital bilateral absence of the vas deferens, and 24 previously fertile men were azoospermic after previous vasectomy," wrote S. Wood and colleagues, Liverpool Women's Hospital, Reproductive Medicine Unit.
"Our results show that men with previous fertility or of an acquired form of azoospermia had significantly lower 2D:4D ratios than men with nonobstructive azoospermia. In nonobstructive azoospermia, there ...
- Finger length predicts sperm retrieval and pregnancy success after IVF/ICSI.
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