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Interactions of androgens and prolactin in the seminal vesicles of mature bonnet monkeys, Macaca radiata. I. Nucleic acids and phosphatases
androgens prolactin seminal vesicles mature bonnet monkeys
2009/2/23
The effects of prolactin (PRL), bromocriptine, testosterone propionate (TP), dihydrotestosterone (DHT), and the combinations of these androgens with PRL or bromocriptine on nucleic acids (RNA and DN...
The selective removal of pachytene spermatocytes using methoxy acetic acid as an approach to the study in vivo of paracrine interactions in the testis
selective removal pachytene spermatocytes methoxy acetic acid paracrine interactions
2009/2/23
Testicular weight and morphology, serum gonadotropins, intratesticular levels of testosterone and ABP levels in testicular interstitial fluid were studied in adult rats at intervals of 1 to 70 days ...
Pure Sertoli Cell Cultures:A New Model for the Study of Somatic-Germ Cell Interactions
cell cultures Sertoli cell germ cell
2009/2/19
A new technique involving a brief hypotonic treatment was developed for obtaining pure rat Sertoli cell cultures. This method for the selective removal of the germ cells present in Sertoli cell enri...
Interactions of proteases and protease inhibitors in Sertoli-germ cell cocultures preceding the formation of specialized Sertoli-germ cell junctions in vitro
proteases and protease inhibitors Sertoli-germ cell specialized Sertoli-germ cell
2009/2/17
The biochemical mechanism(s) by which germ cells can form specialized junctions with Sertoli cells in the seminiferous epithelium at various stages of the spermatogenic cycle is unknown. This stud...
Anti-bull sperm monoclonal antibodies:II. Binding changes during capacitation and influence on sperm-zona interactions in vitro
Bull sperm sperm-zona binding capacitation
2009/2/16
Anti-bull sperm monoclonal antibodies (mAbs), generated against intra-acrosomal and surface antigens, were evaluated for their functional significance. In experiment I, the influence of mAbs on the bo...
Characterization of two second messenger pathways and their interactions in eliciting the human sperm acrosome reaction
Signal transduction protein kinase A protein kinase C crosstalk acrosome reaction
2009/2/13
The human sperm acrosome reaction (AR) occurs via the activation of at least two signal transduction pathways. The purpose of this investigation was to characterize two of the pathways, the protei...
Spermagglutination by bacteria:receptor-specific interactions
Infertility fimbriae pili Escherichia coil
2009/2/12
The influence of genital infection on infertility has yet to be elucidated. We examined receptor-ligand interactions between sperm and Escherichia coli from patients with prostatitis. Two E. coli ...
Hormonal modulation of the interactions of cultured rat testicular Sertoli and peritubular myoid cells. Effects on glycosaminoglycan synthesis
Protein sulfoprotein glycosaminoglycan extracellular matrix cocultures
2009/2/11
Previous investigators have suggested metabolic cooperation between Sertoli and peritubular cells. This study concerns Sertoli cell and peritubular myoid cell interactions in terms of synthesis of...
Effect of fucoidin on human sperm-zona pellucida interactions
human sperm-zona binding fucoidin acrosome
2009/2/11
The authors recently reported that fucoidin (a polymer of predominantly L-fucose sulfate) produced a strong, significant, and dose-dependent inhibition of sperm-zona binding under hemizona assay c...
Normal and abnormal development of the male urogenital tract. Role of androgens, mesenchymal-epithelial interactions, and growth factors
urogenital development mesenchymal-epithelial interactions seminal vesicle prostate cancer keratinocyte growth fact
2009/2/11
Androgen-dependent male urogenital development occurs via mesenchymal-epithelial interactions in which mesenchyme induces epithelial morphogenesis, regulates epithelial proliferation, and evokes e...
In vitro interactions of calmodulin with the ovine proacrosin-acrosin system
acrosome spermatozoa proteolytic activity
2009/1/5
The authors studied the interaction of calmodulin (CaM) with proacrosin and acrosin from ram spermatozoa. CaM binding evaluated by the [125I]-CaM overlay procedure was shown to occur preferentially ...
Cell-Cell Interactions in the Testis of Adjuvant-Induced Arthritic Rat
Arthritis hypoandrogenism Leydig cells testosterone testicular macrophages
2008/12/5
Rats with adjuvant-induced arthritis (AA) have low levels of serum testosterone, and production of testosterone reportedly is influenced by macrophage secretory products. This study was undertaken t...