Y chromosome gr/gr deletions are a risk factor for low semen quality
نویسندگان
چکیده
منابع مشابه
Y chromosome gr/gr deletions are a risk factor for low semen quality.
BACKGROUND Subfertility affects one in eight couples. In up to 50% of cases, the male partner has low semen quality. Four Y chromosome deletions, i.e. Azoospermia factor a (AZFa), P5/proximal-P1 (AZFb), P5/distal-P1 and AZFc deletions, are established causes of low semen quality. Whether a recently identified partial AZFc deletion, the gr/gr deletion, also causes low semen quality is at present...
متن کاملSUBMICROSCOPIC DELETIONS OF THE Y CHROMOSOME ARE NOT LIMITED TO AZOOSPERMIC MEN, BUT ARE ALSO DETECTED IN INFERTILE MEN WITH IDIOPATHIC OLIGOZOOSPERMIA
It is now agreed that 10-25% of infertile men with azoospermia have submicroscopic deletions of the Y chromosome long ann (yq), consistent with the proposed location of the azoospermia locus (AZF) in Yq 11.23. However, it is not known whether Yq microdeletions are unique to men with azoospermia or whether they are also observed in infertile men with less severe defects of spermatogenesis (o...
متن کاملMolecular Study of Partial Deletions of AZFc Region of the Y Chromosome in Infertile Men
Background & Aims: The most significant cause of infertility in men is the genetic deletion in the azoospermia factor (AZF) region that is caused by the process of intra- and inter-chromosomal homologous recombination in amplicons. Homologous recombination could also result in partial deletions in AZF region. The aim of this research was to determine the association between the partial AZFc del...
متن کاملAre sequence family variants useful for identifying deletions in the human Y chromosome?
DELETION RESULT AT STS a sY142 sY1197 sY1191, sY1192, and/or 50f2/C sY1291 sY1206 sY1201 b2/b3 b ϩ ϩ Ϫ ϩ ϩ ϩ gr/gr ϩ ϩ ϩ Ϫ ϩ ϩ b1/b3 ϩ Ϫ Ϫ Ϫ ϩ ϩ b2/b4 c ϩ ϩ Ϫ Ϫ Ϫ ϩ None ϩ ϩ ϩ ϩ ϩ ϩ NOTE.—See Kuroda-Kawaguchi et al. a ϩ p present; Ϫ p absent. b Termed the " g1/g3 " deletion by Fernandes et al. (2004). c " Classical " AZFc. To the Editor: We read with interest the report of a novel deletion of p...
متن کاملSevere oligozoospermia resulting from deletions of azoospermia factor gene on Y chromosome.
BACKGROUND About 13% of cases of non-obstructive azoospermia are caused by deletion of the azoospermia factor (AZF), a gene or gene complex normally located on the long arm of the Y chromosome. Oligozoospermia is far more common than azoospermia, but little is known about genetic causes. We investigated whether severe oligozoospermia is caused by AZF deletions and, if so, whether those deletion...
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ژورنال
عنوان ژورنال: Human Reproduction
سال: 2009
ISSN: 0268-1161,1460-2350
DOI: 10.1093/humrep/dep243