Social interactions and relative positions within a dominance hierarchy have helped shape the evolution of reproduction in many animals. Since reproduction is crucial in all animals, and rank typically regulates access to reproductive opportunities, understanding the mechanisms that regulate socially-induced reproductive processes is extremely important. How does position in a dominance hierarc...

The prediction of sperm fertility is of paramount importance for breeding animals. Multiple laboratory approaches have been developed for this purpose, but they have yielded equivocal results. The objective of this study was to develop and standardize to a method for predicting fertility in vivo in boars using the in vitro penetration assay. To increase the sensitivity and reduce false-negative...

The apoptotic process involved in the male reproductive system regulates the ability of the male to fertilize and pass on his genes through the process of spermatogenesis. Numerous factors are involved in mediating this essential and intricate process. It is known that without programmed cell death there would be an overwhelming amount of chaos within the seminiferous tubules of the testis, whi...

Recent reports portend deterioration in male reproductive health in several human populations. Similar trends might exist in domestic animals, but data are not available because of the inherent nature of animal husbandry practices - culling of the reproductively inefficient food- and fiber-producing animals at an early age. Although the causes for this deterioration are unknown, a variety of en...

To counterbalance the views presented here by Suzana Moss de Oliveira, we explain here the truth: How men are oppressed by Mother Nature, who may have made an error inventing us, and by living women, who could get rid of most of us. Why do women live longer than us? Why is the Y chromosome for men so small? What are the dangers of marital fidelity? In an appendix we mention the demographic chal...

The objective of toxicological study of a target organ, such as the testis, is to elucidate the qualitative and quantitative toxic effects of a chemical on that organ. The ultimate objective is to assess the toxic effects of a chemical in laboratory animals and extrapolate the pertinent experimental data to man. To accomplish these objectives, one must consider the main factors which may influe...

The environmental factors that arrest breeding in prairie voles during the middle of the breeding season are unknown. The role of water availability on reproductive function was examined by limiting water intake to 50% of ad lib water consumption for 10 weeks. At autopsy, testicular, epididymal and seminal vesicle masses were reduced in water restricted males as compared to animals with ad lib ...

Aspirin (Acetylsalicylic acid) was introduced to treating human more than 100 years ago [1] due to its anti-inflammatory and anti-pyretic benefits it is widely used in clinical settings. First of all it was reported by [2] that aspirin and non-steroidal antiinflammatory drugs inhibit the synthesis of pro-inflammatory prostaglandin E2.lattor on it was reported that aspirin has inhibitory effect ...

Proteomics strategies have been widely used in the field of male reproduction, both in basic and clinical research. Bioinformatics methods are indispensable in proteomics-based studies and are used for data presentation, database construction and functional annotation. In the present review, we focus on the functional annotation of gene lists obtained through qualitative or quantitative methods...

Peroxisome proliferator-activated receptors (PPARs) are ligand-activated nuclear receptors controlling many important physiological processes, including energy homeosta-sis, lipid, and glucose metabolism, inflammation, as well as cell proliferation and differentiation. PPARs and their het-erodimeric partner (retinoid X receptor, RXR) have been found in early embryo, developing fetus, and in var...