All boars were seropositive by indirect-fluorescent antibody (IFA)assay by.day 14 postchallenge (PC). Virus was present in semen at the time of the first collection in each of the seven boars on day 4 Pc. The two vaccinated boars that were antibody positive by the Western immunoblot assay shed PRRSVin semen for a shorter time (through days 4 and 7 PC, respectively) compared to the remaining two...

INTRODUCTION Many youth are less informed, less experienced and less comfortable in utilizing reproductive health services. In the Sub-Saharan region the adolescents account for a higher proportion of new HIV infections and unmet need for reproductive health (RH) services. This study assessed reproductive health service utilization and associated factors among the youth in Amhara Region, Ethiop...

Upon ejaculation, mammalian spermatozoa have to undergo a sequence of physiological transformations within the female reproductive tract that will allow them to reach and fertilize the egg. These include initiation of motility, hyperactivation of motility and perhaps chemotaxis toward the egg, and culminate in the acrosome reaction that permits sperm to penetrate the protective vestments of the...

Two types of porcine reproductive and respiratory syndrome virus (PRRSV) have been reported, the European type (EU PRRSV) and the North American type (US PRRSV). We developed a dual enzyme-linked immunosorbent assay (ELISA) for the simultaneous detection and differentiation of serum antibodies directed against either of the two PRRSV types. This tandem PRRS ELISA is based on affinity-purified r...

Studies in our laboratory continue to investigate the mechanism by means of which thyroid hormone influences reproductive physiology in the female rat. Thyroid hormone has been reported to exert effects upon the reproductive system and pregnancy in many types of animals, including human beings. These findings have been reviewed by Leathern (11). However, the mechanisms by means of which thyroid...

Upon ejaculation, mammalian spermatozoa have to undergo a sequence of physiological transformations within the female reproductive tract that will allow them to reach and fertilize the egg. These include initiation of motility, hyperactivation of motility and perhaps chemotaxis toward the egg, and culminate in the acrosome reaction that permits sperm to penetrate the protective vestments of the...

Even after several years since the discovery of human embryonic stem cells and induced pluripotent stem cells (iPSC), we are still unable to make any significant therapeutic benefits out of them such as cell therapy or generation of organs for transplantation. Recent success in somatic cell nuclear transfer (SCNT) made it possible to generate diploid embryonic stem cells, which opens up the way...

In the present study tissue cholesterol and serum cortisol changes during two reproductive phases have been correlated in the freshwater fish Notopterus notopterus. The reproductive cycle of N. notopterus has two phases such as breeding phase (April - August) and non breading phase (October - December). The cholesterol content of the ovary and liver increased during breeding phase. The serum co...

antioxidant are the agents which dispose / scavenge the reactive oxygen species, minimize the oxidative stress / lipid peroxidation and ultimately improve the fertilizing potential of the spermatozoa. currently, many antioxidants are under investigation and manganese is one of them in reducing the oxidative stress both in male and female. the antioxidative action of manganese (mn2+) on various ...