Рецензируемые научные журналы МГОУ. Журналы МГОУ входящие в перечень ВАК: География, История, Международные отношения, Политология, Лингвистика, Педагогика, Психология, Филология, Физика-математика, Философия, Экономика, Юриспруденция

Mammalian sperm contain the serine/threonine phosphatases PP1γ2 and PP2A. The role of sperm PP1γ2 is relatively well studied. Here we confirm the presence of PP2A in sperm and show that it undergoes marked changes in methylation (leucine 309), tyrosine phosphorylation (tyrosine 307) and catalytic activity during epididymal sperm maturation. Spermatozoa isolated from proximal caput, distal caput...

Behavioral changes resembling human athetoid and choreiform hyperkinesias were produced b y unilateral injections of L-3,4-dihydroxyphenylalanine (l-D O P A ), dopamine, 3-m ethoxy-tyram ine and dexamphetamine into the rostromedial part of the caput caudati o f ca ts; saline, noradrenaline and 3,4 -dihydroxyphenylacetio acid were ineffective. Pretreatment with the tyrosine hydroxylase inhibitor...

Sperm maturation in the epididymis may involve differences between mature and immature spermatozoa in their volume regulatory osmolyte response. Spermatozoa obtained from the rat caput and cauda epididymidis were examined for their ability to regulate volume after transfer from in situ epididymal osmolality (measured to be 343 +/- 13 and 365 +/- 19 mmol kg(-1), respectively) to that of the fema...

Hamster spermatozoa were isolated from the caput, corpus and cauda epididymidis. They were observed in culture medium at 37 degrees C with a phase-contrast microscope and their motility recorded cinematographically. About 20 p. 100 of the caput epididymidis spermatozoa were motile and moved in a confined space with no forward progression. 30 p. 100 of the corpus epididymidis spermatozoa were mo...

Sperm cell surface proteins and proteins of their surrounding fluids are reported to be proteolytically processed in relation to acquisition of sperm fertility during epididymal transit. Several of these proteins might be potential targets for subtilisin-like pro-protein convertase. Using immunochemistry and mass spectrometry analysis, we found that an 80 kDa form of furin (EC 3.4.21.75) is pre...

AIM To study the effect of piperine on the epididymal antioxidant system of adult male rats. METHODS Adult male rats were orally administered piperine at doses of 1 mg/kg, 10 mg/kg and 100 mg/kg body weight each day for 30 consecutive days. Twenty-four hours after the last treatment, the rats were weighed and killed with ether and the epididymis was dissected from the bodies. Sperm collected ...

Behavioral changes resembling human athetoid and choreiform hyperkinesias were produced b y unilateral injections of L-3,4-dihydroxyphenylalanine (l-D O P A ), dopamine, 3-m ethoxy-tyram ine and dexamphetamine into the rostromedial part of the caput caudati o f ca ts; saline, noradrenaline and 3,4 -dihydroxyphenylacetio acid were ineffective. Pretreatment with the tyrosine hydroxylase inhibitor...