Prognostic value of Y deletion analysisreview
Аннотация: In many centres, Y chromosome deletion analysis is still not performed routinely and if so, the results are used for genetic counselling but are not considered as having a useful prognostic value. The type of deletion (AZFa, b or c) has been proposed as a potential prognostic factor for sperm retrieval in men undergoing TESE. AZFc deletions and partial AZFb deletions are associated with sperm retrieval in approximately 50% of cases while in the case of a patient with complete AZFb deletion the probability of finding mature spermatozoa is virtually nil. Therefore the extent and position of a Y microdeletion is important (complete or partial). The prognostic value of Y chromosome deletion analysis in cases of oligozoospermia is important when one considers the progressive decrease of sperm number over time in men with AZFc deletions. Cryo-conservation of spermatozoa in these cases could avoid invasive techniques, such as TESE/ICSI, in the future. Male offspring that are conceived by ICSI or IVF techniques from father with oligozoospermia or azoospermia would also benefit from knowledge of their Y status, since the identification of the genetic defect will render future medical or surgical therapies unnecessary. Y microdeletion screening is therefore important, not only to define the aetiology of spermatogenic failure, but also because it gives precious information for a more appropriate clinical management of both the infertile male and his future male child.
Год издания: 2000
Авторы: Csilla Krausz, Lluís Quintana‐Murci, Ken McElreavey
Издательство: Oxford University Press
Источник: Human Reproduction
Ключевые слова: Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities, Sexual Differentiation and Disorders, Gender Studies in Language
Другие ссылки: Human Reproduction (PDF)
Human Reproduction (HTML)
PubMed (HTML)
Human Reproduction (HTML)
PubMed (HTML)
Открытый доступ: bronze
Том: 15
Выпуск: 7
Страницы: 1431–1434