Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Ejaculation”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 1,369 records · Page 76Linked to original sources
PubMed1989

Reduction in anxiety after ejaculation in the rat.

The anxiety levels, tested in the conditioned defensive burying behaviour paradigm, were analyzed after various phases of copulatory behaviour. No differences in anxiety were found between the group of animals without sexual activity and the group of animals tested after five intromissions of the first ejaculatory series. A decrease in anxiety, reflected as a reduction in the burying behaviour, was found in the group of animals tested during the first and the second postejaculatory intervals or after two intromissions from the second series of copulation. The possible involvement of the GABAergic system mediating the reduction in anxiety during these phases of copulation is discussed.

Animals↗
PubMed1999

Effects of medium containing heparin and theophylline on capacitation and metabolic enzyme activities of ejaculated spermatozoa from dogs with asthenozoospermia.

The percentages of motile sperm (%MO), hyperactivated sperm (%HA), and acrosome-reacted sperm (%AR) of four beagle dogs with asthenozoospermia (AS) and five normal beagle dogs were determined during 7 h of incubation. The metabolic enzyme activities of the sperm was examined after 0 and 4 h of incubation. The sperm were incubated in canine capacitation medium (CCM) and CCM containing either 20 microg ml(-1) heparin (HE), 10 microg ml(-1) theophylline (TH) or 20 microg ml(-1) HE + 10 microg ml(-1) TH in glass tubes at 38 degrees C under 5% CO2 in air. The %HA and %AR were determined by counting the sperm exhibiting star-spin like movement and by the triple stain technique. The spermatozoa in HE + TH CCM were homogenized and centrifuged, and the metabolic activities of hexokinase, fructokinase, glucose-6-phosphodehydrogenase (G6PD), and pyruvate kinase in the sperm cytosol in the supernatant was measured with a spectrophotometer. The mean %MO and %HA values of both AS and normal dogs in the four types of CCM were highest in HE + TH CCM, with a mean %HA in HE + TH CCM of 78 +/- 5% (S.E.) after 7 h of incubation. However, there was little difference in %AR among the four types of CCM. The mean activities of the four enzymes in the sperm of AS dogs before incubation was significantly lower than in the sperm of normal dogs (P < 0.05, 0.01). However, after 4 h of incubation the activities of all enzymes in the sperm of both AS and normal dogs was clearly higher in HE + TH CCM than in the control CCM. These findings indicate that HE and TH in the medium are effective inactivating metabolic enzymes, maintaining longer sperm motility, and efficiently inducing HA even of the sperm of AS dogs.

Acrosome Reaction↗
PubMed1978

Electro-ejaculation of a complete paraplegic followed by pregnancy.

After having experimented with electro-stimulation on monkeys, the authors have put it into practice with the paraplegic. They report observations on pregnancy of a woman with a complete paraplegic below T4 who was injured 15 years ago. Nineteen electro-stimulations and seven artificial inseminations were necessary. The electro-stimulation is easy and can be repeated at will.

Adult↗