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Effect of Neem Oil on Sperm Mitochondrial Activity
Normozoospermia Neem Oil Sperm Mitochondrial Activity
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2015/7/15
It is a known fact that neem oil has some effect on motility of sperm. Motility of sperm depends on mitochondrial activity present in mid-piece of sperm. In the present study, the mitochondrial activi...
Differences in Teenage Pregnancy Rates Among Five Developed Countries：The Roles of Sexual Activity and Contraceptive Use
Teenage Pregnancy Rates Contraceptive Use Sexual Activity
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2009/9/16
Context: Adolescent pregnancy, birth, abortion and sexually transmitted disease (STD) rates are much higher in the United States than in most other developed countries.
Methods: Government statist...
A simple, clinical assay to evaluate the acrosin activity of human spermatozoa
acrosin activity human spermatozoa
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2009/2/23
Acrosin, a sperm-specific acrosomal proteinase, has an essential role in the fertilization process. Low levels of acrosin appear to be associated with subfertility and infertility, and the acrosin a...
Inhibition of ornithine decarboxylase activity by follicle stimulating hormone in primary culture of rat Sertoli cells
ornithine decarboxylase follicle stimulating
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2009/2/23
The effect of follicle stimulating hormone on the activity of ornithine decarboxylase (ODC) was determined in primary culture of rat Sertoli cells. Three different FSH preparations (NIH oFSH-S-15, S...
Biochemical studies of metalloendoprotease activity in the spermatozoa of three mammalian species
Biochemical studies metalloendoprotease activity spermatozoa three mammalian species
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2009/2/23
Ejaculated porcine and human spermatozoa, hamster spermatozoa from the cauda epididymidis, isolated hamster sperm heads and hamster cytoplasmic droplets contained activity that hydrolyzed the metall...
Prostaglandin dehydrogenase activity of rat and rabbit testicular tissues and accessory glands before and after castration
Prostaglandin dehydrogenase activity rat rabbit testicular tissues
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2009/2/20
Rat reproductive tissues contained both 15-hydroxy-prostaglandin dehydrogenase (PGDH) and delta 13-reductase activities, while rabbit tissues exhibited only PGDH activity. In the rat, delta 13-reduc...
Inhibition of 5 alpha-reductase activity and alteration of nuclear testosterone.
5a-reductase fibroblast androgen receptor enzyme inhibitor nuclear uptake
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2009/2/20
17 beta-N, N-diethylcarbamoyl-4-methyl-4-aza-5 alpha-androstan-3-one (4-MA) inhibits 5 alpha-reductase activity in cultured human genital skin fibroblasts. Enzyme kinetic studies analyzed by Eadie...
Periodic exposure to a brief light signal stimulates neuroendocrine-gonadal activity in golden hamsters
photoperiodism circadian rhythms hamsters seasonal reproduction neuroendocrine-gon
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2009/2/20
The photoperiodic effects of a periodic light pulse on neuroendocrine-gonadal activity in the male golden hamster was examined using a night interruption paradigm. Adult male hamsters that had been ho...
The aging Leydig cell. VIII. Protein kinase activity
The aging Leydig cell Protein kinase activity
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2009/2/19
The effects of aging on cyclic AMP (cAMP) dependent protein kinase activity of purified Leydig cells were evaluated. Purified Leydig cells from 20-day-, 40-day-, 60-day- and 30-month-old rats were...
In Vitro Effect of Inhibin on Cyclic AMP-Phosphodiesterase Activity in Rat Testes
inhibin cyclic AMP-phosphodiesterase
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2009/2/19
We have previously reported that incubation of testicular slices with inhibin in the presence of 6 x 10-8 M oFSH resulted in a dose-related reduction in accumulation of cyclic AMP due to a decreas...
In Vitro Gonadotropin Stimulation of Bovine Sertoli Cell Ornithine Decarboxylase Activity
ornithine decarboxylase Sertoli cell gonadotropins bovine calf
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2009/2/19
The activity of ornithine decarboxylase (ODC) was determined in primary cultures of bovine Sertoli cells after gonadotropin stimulation in vitro. A significant increase in both ODC activity and putr...
Disappearance of Inhibin-like Activity in Bull Seminal Plasma Following Castration
inhibin seminal plasma castration
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2009/2/19
Ejaculates from normal and castrated bulls were evaluated for the presence of inhibin-like activity. Inhibin activity found in the seminal plasma of normal bulls became undetectable after castrati...
Rat Testicular Phospholipase A2 Activity：pH Optima, Its Cellular and Subcellular Distribution in the Gonad, and Some Factors That May Modulate Its Activity
rat testicular phospholipase A2 activity pH optima localization control
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2009/2/19
A sensitive radiometric assay was developed for detecting phospholipase A1 and A2 (PLA1 and A2) activity. Four to five times more PLA2 activity was observed in rat testes than PLA1 activity. Two PLA...
Role of Hyaluronidase in Fertilization: The Antifertility Activity of Myocrisin, a Nontoxic Hyaluronidase Inhibitor
myocrisin hyaluronidase inhibitor fertilization contraception
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2009/2/18
Myocrisin, a hyaluronidase inhibitor of low molecular weight, was tested for antifertility activity. In addition, the effect of myocrisin on penetration of the follicle cell layer by spermatozoa w...
Origin of an 84-kDa protein with ABH blood-typing antigen activity in human seminal plasma
p 84 ABO blood group substance lactotransferrin
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2009/2/18
In order to investigate the origin of an 84-kDa protein with ABH blood-typing antigen activity (p 84) and its concentration in human seminal plasma, a monoclonal antibody (mAb p 84) was produced....