introduction: mcp (membrane cofactor protein or cd46) is a complement regulatory proteins (crps), which is present in most of body cell membranes (except erythrocytes), and also in most biologycal body fliuds. due to the important role of this protein in the complement system, specially in fertility, the aim of this study was to determine and isolate this protein in human seminal plasma. materi...

background: momordica charantia (m. charantia) seed has been supposed to have an antifertility property but mechanisms underlying the infertility effect have not been investigated. objective: we investigated the antifertility effect of m. charantia ethanol seed extracts on reproductive toxicology and seminal and plasma testosterone in male wistar rats. materials and methods: the control group (...

In this study, age-dependent changes of sperm quality parameters in Rutilus frisii were investigated. Also, fertilization capacity of breeders was tested using two age groups of males (3 and 4 year old breeders) and one female group (i.e. 4 year old breeders). For fertilization trials, the breeders were crossed randomly among age classes. Between the two age groups, spermatological parameters d...

the main objective of this study was assessment of hormonal treatments effects on sperm quality improvement in barbus sharpeyi. results showed differences in effects of treatments with lhrha2, lhrha2 combined with a dopamine antagonist (met), and cpe (carp pituitary extract) on parameters of sperm volume, motility, spermatocrit, biochemical indices of seminal plasma and sperm efficiency on arti...

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: There is growing evidence that damage to spermatozoa by reactive oxygen species (ROS) play a key role in male infertility. Objective: The aim of the present study was to assess the antioxidant status of seminal plasma by measuring total antioxidant capacity (TAC) and activities of catalase and superoxide dismutase (SOD) in men with asthenozoospermia, asthenoteratozoospermia and olig...

MicroRNAs (miRNAs) are small non-coding RNAs (18-25 nt), playing important regulatory roles via interaction with cellular messenger RNAs. The altered expression of miRNAs in specific tissues has been associated with diseases such as cancer and diabetes. We examined the presence of two selected miRNAs (miR-19b and let-7a) in human seminal plasma from fertile men and idiopathic infertile patients...

In order to determine iron and lead content of seminal plasma in water buffalo and to study their associations with the semen characteristics, 54 semen samples were collected from 10 buffalo bulls. The semen characteristics were evaluated; its iron and lead content were estimated by atomic absorption spectrophotometer. The iron and lead content of the seminal plasma (Mean ± SEM) was recorde...

This study aimed to improve the quality of cryopreserved goat semen for artificial insemination by the addition of cattle seminal plasma crude protein. Semen collected from cattle and centrifuged to obtain seminal plasma. Then it was purified to obtain the crude protein. The diluent used in this study was milk-yolk. There were three groups, control group without crude protein (P0), the addition...