Effect of a calcium channel blocker on pituitary luteinizing hormone secretion in intact and castrated male and female rats

1987 ◽  
Vol 103 (3) ◽  
pp. 400-402
Author(s):  
V. N. Babichev ◽  
L. N. Sidneva ◽  
L. Yu. Ozol'
Keyword(s):  
Luteinizing Hormone ◽  
Calcium Channel ◽  
Calcium Channel Blocker ◽  
Channel Blocker ◽  
Hormone Secretion ◽  
Female Rats ◽  
Luteinizing Hormone Secretion ◽  
Male And Female ◽  
Male And Female Rats

Regulation of luteinizing hormone secretion in prepubertal male and female rats

Life Sciences ◽  
1982 ◽  
Vol 31 (20-21) ◽  
pp. 2167-2170 ◽  
Author(s):  
Rüdiger Schulz ◽  
Annemarie Wilhelm ◽  
Karl Martin Pirke ◽  
Albert Herz
Keyword(s):  
Luteinizing Hormone ◽  
Hormone Secretion ◽  
Female Rats ◽  
Luteinizing Hormone Secretion ◽  
Male And Female ◽  
Male And Female Rats

Exposure to alcohol in utero alters the adult patterns of luteinizing hormone secretion in male and female rats

Life Sciences ◽  
1985 ◽  
Vol 37 (18) ◽  
pp. 1683-1690 ◽  
Author(s):  
Robert J. Handa ◽  
Robert F. McGivern ◽  
Ernest SP. Noble ◽  
Roger A. Gorski
Keyword(s):  
Luteinizing Hormone ◽  
Hormone Secretion ◽  
In Utero ◽  
Female Rats ◽  
Luteinizing Hormone Secretion ◽  
Male And Female ◽  
Male And Female Rats

Effects of prolonged exercise on puberty and luteinizing hormone secretion in female rats

1989 ◽  
Vol 257 (6) ◽  
pp. R1359-R1364 ◽  
Author(s):  
J. M. Manning ◽  
F. H. Bronson
Keyword(s):  
Luteinizing Hormone ◽  
Prolonged Exercise ◽  
Pubertal Development ◽  
Hormone Secretion ◽  
Pulse Frequency ◽  
Female Rats ◽  
Basal Secretion ◽  
Luteinizing Hormone Secretion ◽  
Moderate Growth ◽  
Catch Up

Immature female rats were required to run for prolonged periods of time to obtain food. The amount of food they earned was adequate for full pubertal development and moderate growth under nonworking conditions, but both processes were blocked by the exercise requirement. Prolonged exercise also blocked the pulsatile release of luteinizing hormone (LH); only two LH pulses were seen in seven exercising females during a total of 24 h of monitoring at 8 wk of age. By comparison, almost 1 pulse/h was seen in postpubertal, normally growing females of this same age during metestrus. When the exercising females' running requirement was relaxed at 8 wk of age they experienced rapid catch-up growth and reproductive development. Both basal secretion and LH pulse frequency increased markedly within 48 h, and most of these females ovulated during the third dark period after relaxation. Altogether, the experimental paradigm and techniques employed here yield highly predictable results, and they should prove useful for exploring other neuroendocrine pathways through which excessive exercise antagonizes reproduction.

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