The usual testicular location, either low or high in the scrotum, as well as testis ascent into suprascrotal position at least once a week from a usually scrotal position reported by the patient to occur spontaneously and regularly, were recorded in 85 fertile and 1014 infertile men, including 95 with a history of cryptorchism. The frequency of at least one testis being in a high scrotal locati...

Background: Defective sperm quality is a significant cause of infertility in men. It is known that nitric oxide (NO) is a highly reactive free radical gas which has a dual function, being both a cytotoxic and necessary molecule for normal sperm production. Materials and Methods: To investigate correlation between NO levels with sperm parameters, a case-control study were designed with total of ...

Background: To determine whether men with varicoceles have lower testosterone levels than those without and to ascertain if testosterone levels increase after varicocelectomy and or to determine whether the varicocele grade is related to the degree of improvement in serum testosterone levels after varicocelectomy and also older age is associated with improvements in testosterone after varicocel...

OBJECTIVES To standardize the TUNEL assay by establishing inter- and intraobserver variability, interassay variability, cutoff values, sensitivity and specificity of the assay, and studying the distribution of the DNA damage in a population of infertile men referred to a clinical andrology laboratory. METHODS Seminal ejaculates from 25 healthy male volunteers (controls) and 194 infertile men ...

BACKGROUND/AIM About 10%-15% of couples around the world suffer from infertility. Male infertility is responsible directly or indirectly in approximately 60% of cases. A deficiency in semen is the most common cause of male infertility. MATERIALS AND METHODS The study included 180 male subjects aged 18-50 years with 26 fertile and 154 infertile. The infertile subjects were further subdivided a...

Defects in early meiotic events are thought to play a critical role in male infertility; however, little is known regarding the relationship between early meiotic events and the chromosomal constitution of human sperm. Thus, we analyzed testicular tissue from 26 men (9 fertile and 17 infertile men), using immunofluorescent techniques to examine meiotic chromosomes, and fluorescent in situ hybri...

background: y chromosomal microdeletion is an important genetic disorder, which may arise due to intrachromosomal recombination between homologous sequences in the male specific region of the human y chromosome. it is frequently associated with the quantitative reduction of sperm. the screening for y chromosomal microdeletions has a great clinical value. objective: to develop a sequence tagged ...