Prolactin suppression during pre and post-implantation periods on rat uterine glucosamine synthase activity.
Indian J Exp Biol
;
1993 Apr; 31(4): 386-8
Article
in English
| IMSEAR
| ID: sea-61551
ABSTRACT
Administration of bromocriptine (Bc), an ergot derivative having dopamine receptor agonist activity, to rats on day 1-5 of pregnancy prevented implantation of blastocysts and significantly suppressed uterine glucosamine 6-phosphate synthase activity. There was no effect on implantation or the enzyme activity when Bc was injected on day 7 or later of pregnancy. Injection of prolactin following Bc partially restored the enzyme activity and increased number of implantation sites. These results indicate that suppression of prolactin on day 1 to 5 of pregnancy causes failure of implantation. Bc on day 9 or later had no effect possibly due to the availability of placental LH/hCG to support the luteal cells.
Full text:
Available
Index:
IMSEAR (South-East Asia)
Main subject:
Embryo Implantation
/
Prolactin
/
Rats
/
Uterus
/
Female
/
Pregnancy
/
Bromocriptine
/
Embryonic Development
/
Glutamine-Fructose-6-Phosphate Transaminase (Isomerizing)
/
Litter Size
Language:
English
Journal:
Indian J Exp Biol
Year:
1993
Type:
Article
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