title: [The effect of the trypsin inhibitor aprotinin (Trasylol) and TLCK on the gelatinolytic activity of acrosin and the motility of rabbit sperm in vitro].
abstract: In a series of experiments the influence of the trypsin inhibitors aprotinin (Trasylol) and TLCK (N-p-tosyl-L-lysin chloromethyl ketone) on the gelatinolytic activity of acrosin and motility of rabbit spermatozoa was tested. Ejaculated, highly motile spermatozoa were washed in Brackett-Medium. 12.5 to 1000 microns Aprotinin and 50 to 1000 micrograms TLCK, respectively, were added to samples of 1 ml sperm suspension: the specimens were incubated at 37 degrees C. Increasing aprotinin concentrations reduced the gelatinolytic activity of acrosin and the sperm incubation at a concentration of 1000 micrograms Aprotinin/ml sperm. Spermatozoa in all TLCK specimens were entirely immotile 1.5 hours after incubation. The gelatinolytic activity of acrosin was obviously not inhibited at any TLCK concentration. These results suggest that, under these experimental conditions, aprotinin and TLCK may impair primarily the motility spermatozoa.
authors: R
authors: R
authors: Pakzad
mesh_terms: D000176:Acrosin / Q000037:antagonists & inhibitors*; D000590:Amino Acid Chloromethyl Ketones / Q000494:pharmacology*; D000818:Animals; D007611:Aprotinin / Q000494:pharmacology*; D005780:Gelatin / Q000378:metabolism; D008297:Male; D011817:Rabbits; D015842:Serine Proteinase Inhibitors; D013081:Sperm Motility / Q000187:drug effects*; D014107:Tosyllysine Chloromethyl Ketone / Q000494:pharmacology*
chemical_list: D000590:Amino Acid Chloromethyl Ketones; D015842:Serine Proteinase Inhibitors; D014107:Tosyllysine Chloromethyl Ketone; D005780:Gelatin; D007611:Aprotinin; D000176:Acrosin
vernacular_title: Einfluss der Trypsin-Inhibitoren Aprotinin (Trasylol) und TLCK auf die gelatinolytische Aktivität des Akrosins und die Motilität von Kaninchen-Spermien in vitro.