搜索结果: 1-15 共查到“性科学 K-factor”相关记录47条 . 查询时间(0.046 秒)
Comparison of semen parameters between pregnant and nonpregnant couples with male factor infertility during intrauterine insemination
Male factor semen parameter sperm concentration pregnancy
2010/1/12
Aim: To compare the semen parameters between pregnant and nonpregnant couples with male factor infertility during intrauterine insemination (IUI). Materials and Methods: The study included a total of ...
The effect of tumor necrosis factor on human sperm motility in vitro
tumor necrosis factor human sperm motility
2009/2/23
Tumor necrosis factor (TNF alpha) is present in elevated levels in peritoneal fluid from infertile women with endometriosis. The effect of TNF alpha on human sperm motility in vitro was evaluated ...
Radioautographic localization of atrial natriuretic factor receptors in the rat testis
Radioautographic localization atrial natriuretic factor receptors rat testis
2009/2/23
Recent data have suggested that atrial natriuretic factors (ANFs) can modulate Leydig cell functions. An in vitro radioautographic procedure on slide-mounted frozen testicular sections was used to l...
Variation in the effect of a nongonadotropic Leydig cell stimulating factor in testicular interstitial fluid after exposure of the testis to a single episode of heat treatment
Variation nongonadotropic Leydig cell testicular interstitial fluid testis
2009/2/23
The activity of a nongonadotropic factor present in rat testicular interstitial fluid and capable of stimulating Leydig cell testosterone production was measured at intervals for 8 weeks after exp...
Modulation of insulin-like growth factor-1 in the seminal plasma of infertile men
Modulation insulin-like growth factor-1 seminal plasma infertile men
2009/2/18
It has been suggested that insulin-like growth factor (IGF)-1 plays an important role in the regulation of spermatogenesis in the testes. In the present study, concentrations of total IGF-1 we...
Activation of coagulation factor X in human semen
Activation coagulation factor X human semen
2009/2/17
Tissue factor (TF) is an essential cofactor for factor VII (fVII) in initiating blood coagulation. Recently, TF was shown to be present in human semen and to be associated with prostasomes that orig...
Single-step isolation of bovine seminal platelet-activating factor acetylhydrolase
Seminal plasma phospholipase A2 protein purification
2009/2/17
Bovine seminal platelet-activating factor acetylhydrolase was isolated to >90% purity in a single step using a butyl sepharose column. The procedure involves the elution of the activity by use of ...
Levels of hepatocyte growth factor/scatter factor（HGF/SF）in seminal plasma of patients with andrological diseases
Testis spermatozoa male infertility
2009/2/17
Hepatocyte growth factor/scatter factor (HGF/SF) has all the characteristics of a molecule suitable for functioning in regulatory networks of motility, such as the spermatogenic epithelium, where sper...
Transforming growth factor-beta1（TGF-beta1）in penile and prostate growth in the rat during sexual maturation
Penis androgen receptors
2009/2/17
The goal of this study was to determine whether transforming growth factor-beta1 (TGF-beta1) may contribute to the arrest of penile growth and the down-regulation of androgen receptors (AR) that occ...
Partial purification and localization of platelet-activating factor acetylhydrolase from bovine seminal plasma
Partial purification platelet-activating factor bovine seminal plasma
2009/2/17
Platelet-activating factor (PAF) is a potent lipid mediator that is inactivated by platelet-activating factor acetylhydrolase (PAF-AH). Platelet-activating factor bioactivity has been detected in ...
Purification and characterization of a lipophilic factor from testicular macrophages that stimulates testosterone production by Leydig cells
Testis macrophage Leydig cell
2009/2/16
Testicular macrophages have been shown to secrete a factor that stimulates testosterone production by Leydig cells. The purpose of this investigation was to purify and characterize this factor. M...
Expression of c-KIT and its ligand, stem cell factor, in normal and subfertile human testicular tissue
Germ cells proto-oncogenes testis stem cells
2009/2/16
The c-KIT proto-oncogene encodes for a transmembrane receptor and is associated with maturation of several cell types, including germ cells. The ligand of the receptor has been identified as stem ...
An orthotopic model for the study of growth factors in the ventral prostate of the rat：effects of epidermal growth factor and basic fibroblast growth factor
growth factors ventral prostate rat epidermal growth factor basic fibroblast growth factor
2009/2/12
In order to determine if epidermal growth factor (EGF) or basic fibroblast growth factor (bFGF) are capable of stimulating prostatic growth in situ, we complexed EGF and bFGF to a Matrigel (MG) ve...
Sertoli cell secretion of a factor that inhibits the incorporation of 3H-thymidine into cells in vitro
Sertoli cell cell proliferation DNA synthesis
2009/2/12
Rat Sertoli cells secrete a low molecular weight factor in vitro that inhibits the incorporation of 3H-thymidine into cells. Although the addition of Sertoli cell-conditioned medium (rSCCM) result...
Atrial natriuretic factor inhibits the phosphorylation of protein kinase C in plasma membrane preparations of cultured Leydig tumor cells
Atrial natriuretic factor protein kinase C Leydig tumor cells cGMP plasma membranes
2009/2/12
The peptide hormone atrial natriuretic factor (ANF) exerts its effect in a receptor-mediated fashion and the membrane-bound form of guanylate cyclase represents a biologically active ANF receptor;...