Mechanism of LH Release with Synthetic LH-RH
نویسندگان
چکیده
منابع مشابه
Plasma LH concentrations after single or double injections of synthetic LH-RH in dairy cows.
Milked Friesian dairy cows were given 1 or 2 i.v. injections of synthetic LH-RH. The second of 2 injections of LH-RH given 1.5 h apart induced a significantly greater release of LH than did the first. The response to this injection was also significantly greater than that caused by injections given 6 h apart. There was no significant difference between the LH responses to the two injections giv...
متن کاملEffect of steroids in combination with LH-RH on the release of LH and FSH in LH-RH-primed immature male rat.
LH and FSH release of immature male rats was remarkedably enhanced by LH-RH if primed with LH-RH one hour before. The effect of exogenous steroids on the action of the second LH-RH was investigated. C-18, C-19 and C-21 steroids in different doses were tested. Blood samples were collected from the jugular vein immediately before and 30 min after the second LH-RH injection. Serum LH and FSH were ...
متن کاملThe effect of LH-RH administration on LH release in the female rabbit.
Intracarotid infusion of LH-RH to female rabbits stimulated a significant increase in plasma LH concentration in the jugular vein. This response varied with the reproductive state of the animal, with a greater release occurring in oestrous (spontaneous or oestrogen-induced) and non-receptive does than in pseudopregnant or ovariectomized animals. If ovariectomized rabbits were pretreated with oe...
متن کامل3 H-labelling of a synthetic decapeptide having LH and FSH releasing activity (LH-RH--FSH-RH).
A decapeptide capable to stimulate the release of LH and FSH from pituitary has been recently isolated from hypothalami of porcine origin and its amino acid sequence has been established as (Pyro)Glu-HisTrp-Ser-Tyr-Gly-Leu-Arg-Pro-Gly-NH, [ 1,2]. An identical decapeptide has been found in sheep hypothalami [ 3,4] . Several laboratories described syntheses of LH-RH/FSH-RH either by the solid pha...
متن کاملEffect of LH-RH on the release of sulfated lutropin: a potential in vitro bioassay for LH-RH.
Sheep pituitary cells prelabelled with radioactive [35S] sulfate (35SO4(2-)) were incubated with different concentrations of LH-RH and the release of LH (lutropin) into the medium was monitored in terms of immunoprecipitable [35S] sulfated LH radioactivity and estimation of LH in the same sample by radioimmunoassay. A dose dependent response was obtained with a maximum of a 16 fold increase in ...
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ژورنال
عنوان ژورنال: Folia Endocrinologica Japonica
سال: 1976
ISSN: 0029-0661
DOI: 10.1507/endocrine1927.52.9_881