The Y chromosome in the era of intracytoplasmic sperm injection: a personal review.
نویسنده
چکیده
The Y chromosome contains 60 multicopy genes composed of nine different gene families concentrated in regions of multiple repeat sequences called amplicons arranged in mirror images called palindromes. This pattern is susceptible to deletions caused by homologous recombination with itself, and can explain the presence of small numbers of sperm in otherwise azoospermic men.
منابع مشابه
Y Choromosomal Microdeletion Screening in The Workup of Male Infertility and Its Current Status in India
متن کامل
بررسی حذف های کوچک کروموزوم Y در مردان نابارور مراجعه کننده به بیمارستان فاطمیه همدان با روش Multiplex PCR
Introduction & Objective: Male factor is the major cause of infertility in 20% of cases (WHO). There are known etiologies for 70% of cases .However, 30% of infertility cases are of idiopathic origin. The Y chromosome and micro deletion of the long arm of the Y chromosome (Yq) in three regions (AZFa, AZFb ,AZFc ) are associated with spermatogenic failure and is a major etiology for oligo and a...
متن کاملPartial and complete microdeletions of Y chromosome in infertile males from South of Iran
Y chromosome microdeletions are the second genetic cause of male infertility. The incidence of Y chromosome microdeletions can vary considerably depending on several factors, including patient selection criteria, population composition, and diagnostic protocols. They are associated with spermatogenic failure and lead to azoospermia or oligozoospermia. The advance in assisted reproductive techno...
متن کاملFrequency of Y Chromosome Microdeletions in Azoospermic and Oligospermic Iranian Infertile Men
Background and Aims: Azoospermia factor (AZF) region of the Y-chromosome has several genes which are responsible for normal spermatogenesis. Microdeletions of these genes are associated with azoospermia and oligospermia. These microdeletions are too small to be detected by karyotyping. They can be easily identified using polymerase chain reaction. The aim of this study is to determine the frequ...
متن کاملP-41: Evaluation of CAPZA3 Expression in Infertile Individuals Undergoing Intracytoplasmic Sperm Injection
Background: CAPZA3 is one of the actin-capping proteins believed to be play an important role in controlling of actin polymerization during spermiogenesis and has been shown to be peresent in mature sperm. Immunohistochemistry showed that human CAPZA3 is localized in the neck region of ejaculated sperm, with moderate and faint signals also detected in the tail and post-acrosome region respectiv...
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ورودعنوان ژورنال:
- Fertility and sterility
دوره 95 8 شماره
صفحات -
تاریخ انتشار 2011