BACKGROUND Development of a reproducible baboon in vitro fertilization (IVF) system require optimized and reproducible sperm parameters. The objective of this study was to document basic spermatology values and investigate the reproducibility of these variables in the same baboons 1 or 3 months later in a larger number of baboons. METHODS In this prospective study, sperm quality (semen volume...

Aberrant sperm phenotypes coincide with the expression of unique sperm surface determinants that can be probed by objective, biomarker-based semen analysis and targeted as ligands for semen purification. This study evaluated a nanoparticle-based magnetic purification method that removes defective spermatozoa (∼30% of sample) from bull semen and improves sperm sample viability and fertilizing ab...

The factors affecting the inter-individual differences in sperm freezability is a major line of research in spermatology. Poor sperm freezability is mainly characterised by a low sperm velocity, which in turn is associated with low fertility rates in most animal species. Studies concerning the implications of sperm morphometry on freezability are quite limited, and most of them are based on spe...

The fate of the proximal centriole in passeridan birds is an area of controversy and relative lack of knowledge in avian spermatogenesis and spermatology. This study examines, for the first time, spatiotemporal changes in the centriolar complex in various phases of spermiogenesis in a passerine bird, the Masked weaver (Ploceus velatus). It also describes the configuration of the centriolar comp...

Flow cytometry is now a recognized methodology within animal spermatology, and has moved from being a research tool to become routine in the assessment of animal semen destined to breeding. The availability of 'bench-top' flow cytometers and of newer and versatile markers for cell structure and function had allowed the instrumentation to measure more sperm parameters, from viability to reactive...

Comparative spermatology may provide characteristics that can be useful in systematics. Previous observations on sperm structure of the solifugid Eusimonia mirabilis revealed that the most similar arachnid sperm cells are found within the Actinotrichida (Acari). The general morphology of the testis and the tendency to form sperm aggregates are also similar in both taxa. Since knowledge of sperm...

Objectives: Almost all men with Cystic Fibrosis (CF) are infertile mainly because of congenital bilateral aplasia vas deferens, VD (CBAVD) resulted to obstructive azoospermia. Some 3849+10kbC>T variant the CFTR gene can be fertile no obstruction, however factor(s) this phenotypic variability unknown. Materials and methods: We examined 23 adult PS-CF, having gene. Semen examination, clinical, an...

Polyvinyl chloride (PVC) has toxic effects through the induction of oxidative stress in the body and testicles. Vitamin E (Vit E) is a dietary compound that functions as an antioxidant scavenging toxic free radicals. The present study aimed to probe the protective effect of Vit E against PVC-induced reprotoxicity in male rats. In this experimental study, 24 male rats were randomly divided into ...

— We investigated the ultrastructure of spermatozoa and some physiological and biochemical parameters of semen in muskellunge Esox musquinongy. Ultrastructure of spermatozoa analyzed with scanning and transmission electron microscopes revealed a spherical head, 1.5 μm in diameter. Unlike the spermatozoa of other teleost fishes, an elongated midpiece with abundant mitochondria was found to be ch...