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Possible role of elongated spermatids in control of stage-dependent changes in the diameter of the lumen of the rat seminiferous tubule
elongated spermatids stage-dependent changes rat seminiferous tubule
2009/2/23
Adult male rats were treated with a single dose of 650 mg/kg methoxy acetic acid to deplete the seminiferous tubules specifically of pachytene and later spermatocytes. The effect of this treatment a...
Possible significance of transferrin levels in seminal plasma of fertile and infertile men
seminal transferrin FSH fertility man
2009/2/23
Human seminal plasma contains large amounts of transferrin, which is a protein secreted mostly by Sertoli cells. It has been suggested that the concentration of transferrin may serve as a possible c...
Selective luminal absorption of L-carnitine from the proximal regions of the rat epididymis. Possible relationships to development of sperm motility
L-carnitine rat epididymis sperm motility microperfusion
2009/2/23
The absorption of L-carnitine from the duct of the proximal regions of the rat epididymis was investigated using a stopped-flow, split-droplet microperfusion technique. L-carnitine was absorbed from...
A Possible Relation between Elevated FSH Levels and Leydig Cell Dysfunction in Azoospermic and Oligospermic Men
follicle-stimulating hormone luteinizing hormone testosterone oligospermia
2009/2/18
Plasma testosterone, follicle-stimulating hormone (FSH), and luteinizing hormone (LH) levels were measured in the male partners of 69 infertile couples and in 260 allegedly fertile men requesting va...
Hormonal regulation of inhibin B secretion by immature rat sertoli cells in vitro：possible use as a bioassay for estrogen detection
Male reproduction estrogens
2009/2/18
The influences of follicle-stimulating hormone (FSH), gonadal steroids, and culture time were studied in relation to inhibin B production by Sertoli cells of immature rats cultured in vitro. Serto...
Evidence of proacrosin molecule abnormality as a possible cause of low acrosin activity and unexplained failure of fertilization in vitro
Spermatozoa male infertility immunoblotting
2009/2/17
The aim of this study was to investigate whether the molecular abnormality of proacrosin is associated with an unexplained failure of in vitro fertilization (IVF) and low acrosin activity in human...
Mechanism of stress-induced attenuation of the testicular response to gonadotropin：possible involvement of testicular opioids, a pertussis toxin-sensitive G-protein, and phosphodiesterase
stress-induced attenuation possible involvement testicular opioids pertussis toxin-sensitive G-protein
2009/2/16
This study examined the potential role of testicular opioids, a pertussis toxin (PT)-sensitive G-protein, and phosphodiesterase in mediating the inhibitory effect of immobilization stress on testi...
Effects of long-term administration of androgens and estrogen on rhesus monkey prostate：possible induction of benign prostatic hyperplasia
long-term administration androgens estrogen rhesus monkey prostate
2008/12/25
Rhesus monkeys were used to investigate the role of androgenic steroids and estradiol in the induction of hyperplastic changes in stromal and glandular prostate tissues. Adult male rhesus monkeys ...
Possible Redox Regulation Minireview of Sperm Motility Activation
Possible Redox Regulation Sperm Motility Activation
2008/12/25
Mature spermatozoa are held in a quiescent state within
the cauda epididymis but show an instantaneous burst of
vigorous motility on being released from this environment
at ejaculation. Although th...
Expression and Possible Functions of a Novel Gene SPATA12 in Human Testis
Germ cell specific stage specific spermatogenesis
2008/12/24
In our previous study, a novel human testis-specific gene, SPATA12, was identified using the digital differential display program. In the current study, both SPATA12 mRNA and protein levels in...
Immunolocalization and Possible Functional Role of PSP-I/PSP-II Heterodimer in Highly Extended Boar Spermatozoa
Reproductive tract semen sperm seminal plasma sperm capacitation
2008/12/24
PSP-I/PSP-II heterodimer is a major protein of boar seminal plasma which is able to preserve, in vitro, the viability, motility, and mitochondrial activity of highly extended boar spermatozoa for at...
Azoospermia：Virtual Reality or Possible to Quantify?
Azoospermia Virtual Reality Quantify
2008/12/24
Three sperm-counting methods were compared within and between 3 centers to determine the sensitivity and reproducibility of assessing low sperm concentrations. Two methods were performed by phase cont...
Possible Relationship Between Seminal Plasma Inhibin B and Spermatogenesis in Patients With Azoospermia
Male infertility Sertoli cell testis biopsy testicular sperm extraction
2008/12/15
Inhibin B is bidirectionally secreted by Sertoli cells, basal secretion into the circulation exerts negative feedback on follicle-stimulating hormone secretion, and serum inhibin B is considered a mar...
