background: cytogenetic analysis, y-chromosome microdeletion screening, fish techniques and other genetic methods have helped in finding the causes of infertility in azoospermic or severe oligoazoospermic cases in the last decade. objective: in the present study, we characterized an abnormal y-chromosome, detected as a mosaic in an azoospermic male ascertained for infertility. materials and met...

this study was designed to determine the frequency of y chromosome azf (azoospermia factor ) subregions, microdeletions in patients with idiopathic nonobstructive azoospermia and severe oligozoospermia. subjects included 40 men who had been referred to infertility clinics for assisted reproduction, 37 were azoospermic and 3 had severe oligospermia. medical history and physical exam revealed no ...

You have accessJournal of UrologyInfertility: Therapy (MP31)1 Sep 2021MP31-03 MICRODISSECTION TESTICULAR SPERM EXTRACTION VS MULTIPLE NEEDLE-PASS PERCUTANEOUS ASPIRATION IN MEN WITH NON-OBSTRUCTIVE AZOOSPERMIA: A RANDOMIZED CLINICAL TRIAL Christian Fuglesang S. Jensen, Dana A. Ohl, Mikkel Fode, Niels Jørgensen, Aleksander Giwercman, Angel Elenkov, Anna Klajnbard, Claus Y. Andersen, Lise Aksglae...

Y chromosome microdeletions are the most frequent genetic cause of severe oligozoospermia (,5 million spermatozoa/ml) and azoospermia (absence of spermatozoa in the ejaculate). Microdeletions associated with infertility occur in specific regions of the long arm of the Y chromosome, called azoospermia factor (AZF) regions. 3 In 1996, three types of AZF deletion (AZFa, AZFb, and AZFc) were descri...

Y chromosome microdeletions are the most frequent genetic cause of severe oligozoospermia (,5 million spermatozoa/ml) and azoospermia (absence of spermatozoa in the ejaculate). Microdeletions associated with infertility occur in specific regions of the long arm of the Y chromosome, called azoospermia factor (AZF) regions. 3 In 1996, three types of AZF deletion (AZFa, AZFb, and AZFc) were descri...

screening was carried out according to the European Academy of Andrology (EAA) guidelines by real-time fluorescent PCR using the Y Chromosomal Microdeletion Test Kit (Shanghai Tellgen Corporation, Shanghai, China), which detected the sY84 and sY86 sequence-tagged sites (STSs) of azoospermia factor a (AZFa), the sY127 and sY134 STSs of AZFb, and the sY254 and sY255 STSs of AZFc. All six STSs wer...

Men with congenital absence or bilateral partial aplasia of vas deferens, or those with failed or surgically unreconstructable obstructions or azospermic men with testicular failure or genetic cause can now be treated by using sperm retrieval techniques in conjunction with in vitro fertilization/intra cytoplasmic sperm injection (ICSI/ IVF). These techniques are: Microsurgical epididymal sperm ...