Phenotypic spectrum of 45,X/46,XY males with a ring Y chromosome and bilaterally descended testes
نویسندگان
چکیده
منابع مشابه
Comparative study of semen traits and histomorphometric features of testes of broiler breeder males with different phenotypic traits
Fertility reduction due to sub-fertile males is a major concern in breeder flocks. Phenotypic traits of broiler breeder males and their relationships with fertility can be used as reliable indicators for identification and removal of sub-fertile males from the breeder flocks. This study was conducted to investigate semen traits (semen volume, sperm motility, sperm viability and sperm count) and...
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 کاملa comparison of teachers and supervisors, with respect to teacher efficacy and reflection
supervisors play an undeniable role in training teachers, before starting their professional experience by preparing them, at the initial years of their teaching by checking their work within the proper framework, and later on during their teaching by assessing their progress. but surprisingly, exploring their attributes, professional demands, and qualifications has remained a neglected theme i...
15 صفحه اولO-4: Association of Y Chromosome Microdeletion with Spermatogenic Impairment and Infertility in Human Males with High Concentration of Seminal Hexachlorocyclohexane (HC)
Background: The Y chromosome microdeletion is one of the best-documented causes of male infertility but the factors responsible for Y chromosome microdeletions in spermatozoa remain unresolved. However, the environmental pollutants are known to damage DNA in differentiating and maturing germ cells in the male reproductive tract. In view of this, the objective of the present study was to explore...
متن کاملLocalisation of Y chromosome sequences in normal and 'XX' males.
Three unique sequences derived from the Y chromosome have been mapped within the human genome. A Y specific sequence DYS20 is localised to Yq11.2. DXYS25 and DXYS27 are both X-Y homologous sequences which map to the Y short arm and to Xq21. DXYS25 maps more distally than DXYS27, on the Y short arm and on the X long arm. Y specific restriction fragments for these two sequences are shown to be pr...
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ژورنال
عنوان ژورنال: Fertility and Sterility
سال: 2009
ISSN: 0015-0282
DOI: 10.1016/j.fertnstert.2007.12.078