Background: Obesity is a leading preventable cause of death worldwide, with increasing prevalence in adults and children. Some studies have shown that increased body mass index is related to poor semen quality, decreased sperm concentration, decreased normal-motile sperm cells and increased DNA fragmentation index. Lipid peroxidation contributes to the damage of the sperm plasma membrane. Cinna...

objective: adiponectin and its receptors (adipor1 and adipor2), known as adiponectin system, have some proven roles in the fat and glucose metabolisms. several studies have shown that adiponectin can be considered as a candidate in linking metabolism to testicular function. in this regard, we evaluated the correlation between sperm mrna abundance of adiponectin and its receptors, with sperm mot...

Antisperm antibodies have been found in infertile patients and those causing immobilization of sperm are considered to be closely related to unexplained infertility. These antibodies are usually identified by a sperm immobilization test which involves counting motile sperm under microscope. This test is subjective as it relies on the judgement of the examiner with respect to sperm motility. In ...

The aim of this study was to evaluate the sperm quality analyser (SQA)-IIB, a new automated sperm analyser, and to compare its results with those obtained with a method based on the World Health Organization recommendations. Eighty-nine unprocessed semen samples and 53 selected sperm suspensions were analysed. Concentration, motility and morphology were evaluated using the routine laboratory me...

background: it is established that sperm dna integrity is essential in fertilization and normal embryo and fetal development. routine semen analysis gives an approximate evaluation of the functional competence of spermatozoa, but does not always reflect the quality of sperm dna. therefore, the evaluation of sperm dna integrity, in addition to routine sperm parameters, could add further informat...

The present study was conducted to assess the fertilizing potential of frozen-thawed spermatozoa, which were cryopreserved after separation on a Percoll gradient, or washed out of seminal plasma. For this purpose, binding to the zona pellucida and other characteristics of the treated sperm cells were compared with those of cryopreserved spermatozoa from the same original sample which were not m...

and normal morphology. Curiously, some previous studies have also focused on elucidating the relationship between HPV-infection with sperm function and male infertility. Whereas, the inconsistent results they obtained made the issue controversial. For instance, in 1997, Lai et al. 5 found the incidence of asthenozoospermia among patients infected with either HPV-16 or HPV-18 was significantly h...

BACKGROUND Humans are ubiquitously exposed to multiple environmental contaminants. Consequences of combined action on the reproductive system remain unknown. This study aimed to assess single and joint effects of cadmium and diazinon exposure on sperm quality parameters. METHODS Male adult Wistar rats were randomized into 4 groups of ten animals each. Group A was used as a control, animals fr...

Background: Studies suggest that global semen quality is declining, but the debate remains open owing to geographic variation. Objectives: To evaluate temporal trends of sperm parameters – namely concentration, motility and total motile sperm count – in sperm donated during the period 1995–2009. methods: In a retrospective longitudinal cohort study we analyzed the sperm count and motility of 21...

In animals, male fertility requires the successful development of motile sperm. During Drosophila melanogaster spermatogenesis, 64 interconnected spermatids descended from a single germline stem cell are resolved into motile sperm in a process termed individualization. Here we identify a putative double-stranded RNA binding protein LUMP that is required for male fertility. lump(1) mutants are m...