Behavioural interactions, basal plasma luteinizing hormone concentrations and the differential pituitary responsiveness to exogenous gonadotrophin-releasing hormone in entire colonies of the naked mole-rat (Heterocephalus glaber)

2006 ◽  
Vol 256 (1) ◽  
pp. 25-33 ◽  
Author(s):  
L. A. Westhuizen ◽  
N. C. Bennett ◽  
J. U. M. Jarvis
Keyword(s):  
Luteinizing Hormone ◽  
Heterocephalus Glaber ◽  
Releasing Hormone ◽  
Mole Rat ◽  
Naked Mole Rat ◽  
Basal Plasma ◽  
Behavioural Interactions ◽  
Gonadotrophin Releasing Hormone

Differential pituitary response to GnRH in pregnant Booroola-Assaf and Assaf ewes

1992 ◽  
Vol 4 (2) ◽  
pp. 231 ◽  
Author(s):  
E Gootwine ◽  
A Bor ◽  
D Shalhevet ◽  
A Zenou ◽  
R Braw-Tal
Keyword(s):  
Luteinizing Hormone ◽  
Late Stage ◽  
Follicle Stimulating Hormone ◽  
Releasing Hormone ◽  
Gene Carriers ◽  
Basal Plasma ◽  
Gonadotrophin Releasing Hormone ◽  
Stimulating Hormone

Pituitary response to exogenous gonadotrophin-releasing hormone (GnRH) was examined at a late stage of pregnancy in 10 Booroola-Assaf ewes heterozygous at the FecB locus (FecBFec+) and in 11 Assaf ewes that were non-carriers (Fec+Fec+). Basal plasma luteinizing hormone (LH) and follicle stimulating hormone (FSH) concentrations were similar in the two genotypes. Administration of 100 micrograms of GnRH resulted in a significant increase (P < 0.05) in plasma LH and FSH concentrations in most of the ewes treated. Maximal responses were observed 105-135 min after GnRH treatment. Pituitary responses to GnRH were significantly lower (P < 0.05) in Booroola-Assaf than in Assaf ewes. The decreased pituitary responsiveness observed in FecB gene carriers compared with Fec+Fec+ ewes might be due to differences in the concentrations of ovarian or uterine hormones modulating the release of gonadotrophin. The results suggest that FecB-specific differences can be observed at the pituitary level.

Ultrastructural study of the testis of non-breeding naked mole-rat (Heterocephalus glaber, Ruppell)

1993 ◽  
Vol 175 (5) ◽  
pp. 447-452 ◽  
Author(s):  
Daniel W. Onyango ◽  
Dominic Oduor-Okelo ◽  
George E. Otiang'a-Owiti
Keyword(s):  
Ultrastructural Study ◽  
Heterocephalus Glaber ◽  
Mole Rat ◽  
Naked Mole Rat

Infertility

2013 ◽  
pp. 551-566
Author(s):  
John Reynard ◽  
Simon Brewster ◽  
Suzanne Biers
Keyword(s):  
Luteinizing Hormone ◽  
Male Infertility ◽  
Anterior Pituitary ◽  
Treatment Options ◽  
Follicle Stimulating Hormone ◽  
Reproductive Physiology ◽  
Seminiferous Tubules ◽  
Luteinizing Hormone Releasing Hormone ◽  
Releasing Hormone ◽  
Gonadotrophin Releasing Hormone

Male reproductive physiology 552 Aetiology and evaluation of male infertility 554 Investigation of male infertility 556 Oligozoospermia and azoospermia 560 Varicocele 562 Treatment options for male infertility 564 The hypothalamus secretes luteinizing hormone-releasing hormone (LHRH), also known as gonadotrophin-releasing hormone (GnRH). This causes the pulsatile release of anterior pituitary gonadotrophins called follicle-stimulating hormone (FSH) and luteinizing hormone (LH), which act on the testis. FSH stimulates the seminiferous tubules to secrete inhibin and produce sperm; LH acts on Leydig cells to produce testosterone (...

The structure, composition and mechanical properties of the skeleton of the naked mole-rat (Heterocephalus glaber)

Bone ◽  
2019 ◽  
Vol 128 ◽  
pp. 115035 ◽  
Author(s):  
Shira Carmeli-Ligati ◽  
Anna Shipov ◽  
Maïtena Dumont ◽  
Susanne Holtze ◽  
Thomas Hildebrandt ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heterocephalus Glaber ◽  
Mole Rat ◽  
Naked Mole Rat
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