Recently, the seminal plasma transferrin concentration has been reported to be a possible clinical marker of the Sertoli cell function. In the present study we measured the seminal plasma transferrin concentration in patients of male infertility by the method of radial immunodiffusion. The results obtained were as follows. 1. The seminal plasma transferrin concentration is significantly correla...

BACKGROUND The seminal plasma is an excellent source for noninvasive detection of spermatogenesis. The seminal plasma of normospermic and azoospermic men has been analyzed for detection of spermatogenesis. METHODS Optical spectroscopy (Attenuated Total Reflectance-Infrared spectroscopy (ATR-IR) and Fourier Transform infrared spectroscopy (FT-IR) has been used to analyze the seminal plasma and...

the hydrophobic proteins of plant plasma membrane still remain largely unknown.  for example in the arabidopsis genome, receptor-like kinases (rlks) are plasma membrane proteins, functioning as the primary receptors in the signaling of stress conditions, hormones and the presence of pathogens form a diverse family of over 610 genes. a limited number of these proteins have appeard in protein pro...

BACKGROUND During the process of fertilization, human spermatozoa are confronted with phagocytic cells of the female reproductive tract. Part of this host mucosal barrier are immature dendritic cells (DCs), which play an important role in the defense of invading microbial pathogens. In the present study, we investigated the potential interaction of spermatozoa with DCs and raised the question o...

The present study evaluated the relationship between Bali bull (Bos javanicus) seminal plasma proteins and different semen quality parameters. Semen samples from 10 mature Bali bulls were evaluated for conventional semen parameters (general motility, viability, and normal morphology), sperm functionality (acrosome reaction, sperm penetration rate, sperm penetration index), sperm kinetics (compu...

I would like to comment on the article by Dr. Saleh and colleagues, which adds new information to the growing body of evidence about the negative effects of smoking on reproductive health (1). In 1998, two consecutive papers were published by our group dealing with the effects of smoking on human sperm viability via the seminal plasma factor and at the ultrastructural level of the sperm tail ax...

We have already shown that seminal plasma proteins in the ram can repair cold-shock sperm membrane damage and that the addition of seminal plasma proteins before cold-shock treatment prevents sperm membrane injury. In this study, we prove that 2 protein bands of approximately 14 (P14) and 20 (P20) kd isolated from seminal plasma are responsible for this protective effect. In vitro capacitation ...

Substantial dilution of boar semen during processing decreased the concentration of seminal plasma, perhaps contributing to the decline in sperm quality after cryopreservation and sex-sorting. Results of replacing seminal plasma in investigations from many laboratories have been contradictory. Results and discussion here suggest that whereas membrane status can be influenced by seminal plasma, ...

This study revealed and characterised the presence of the antioxidant enzymes paraoxonase (PON) type 1 (PON-1, extracellular) and type 2 (PON-2, intracellular) in boar semen. To evaluate PON-1, an entire ejaculate from each of ten boars was collected and the seminal plasma was harvested after double centrifugation (1,500g for 10 min). Seminal plasma was analysed for concentration as well as enz...

Sixty-four steer calves were individually fed in a 181-day experiment to determine their gain, feed efficiency, plasma urea-N and seminal vesicle response following implantation with 30 mg of either stilbene, estriol, estrone, 16-estradiol, c~-estradiol or diethylstilbestrot (DES). Half of the steers were fed a constant level and the remaining half were fed a declining level of supplemental pro...