geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Changes in plasma luteinizing hormone, testosterone and estradiol-17 beta levels and semen quality after injections of gonadotropin releasing hormone agonist and human chorionic gonadotropin in three dogs with oligozoospermia and two dogs with azoospermia


, : Changes in plasma luteinizing hormone, testosterone and estradiol-17 beta levels and semen quality after injections of gonadotropin releasing hormone agonist and human chorionic gonadotropin in three dogs with oligozoospermia and two dogs with azoospermia. Animal Reproduction Science 47(1-2): 157-167

Plasma luteinizing hormone (LH) and testosterone (T) levels in three normal male Beagles increased markedly, the LH levels peaking at 30 or 45 min and the T levels at 45 or 60 min respectively, after a subcutaneous injection of 1 microgram kg-1 gonadotropin releasing hormone agonist (GnRH-A). Two Collies and a Great dane diagnosed as oligozoospermic and two Shetland sheep dogs diagnosed as azoospermic by evaluation of semen quality were treated with 1 microgram kg-1 GnRH-A after blood collection. Their plasma levels of LH, T and estradiol-17 beta (E2) were measured by radioimmunoassay for the purpose of investigating the effect of hormone therapy on spermatogenic dysfunction and the mechanism on improvement of semen quality. The semen quality of one of the Collies had improved 4 weeks after the GnRH-A treatment. The dog was treated with GnRH-A again and mated with a bitch 4 days later. The bitch gave birth to five puppies. The other dogs, whose semen quality had not improved, were treated with an intramuscular injection of 500 or 1000 IU human chorionic gonadotrphin (hCG) per animal. Since the semen quality of the other Collie and the Great Dane improved temporarily 2 and 4 weeks, respectively, after hCG treatment, the former was mated with a bitch 5 days later. The bitch gave birth to a litter of seven puppies. These hormone treatments, however, had no effect on the azoospermia in the two Shetland sheep dogs. Although the mean plasma LH and T levels in the dogs with oligozoospermia had been low, their LH levels gradually increased after hormone treatment. There were no marked changes in plasma T or E2 levels. These findings indicate that the semen quality of dogs with oligozoospermia can be temporarily improved between 2 and 4 weeks after a single injection of GnRH-A or hCG and the fertility of the dogs restored by the injection.

US$29.90

PMID: 9233515


Other references

Goo, Y-Mi.; Heo, H-Jin.; An, D-Hyun., 2014: EMG Activity of the Abductor Hallucis Muscle during Foot Arch Exercises Using Different Weight Bearing Postures. [Purpose] This study examined the effects of different weight-bearing postures on the activation of the abductor hallucis muscle during foot-arch exercises. [Subjects] The study recruited 11 healthy volunteers who were pain-free, had no history of...

Fernandez, E.; Fallon, M.J.M.; Frazier, M.L.; D.L.orens, R.; Cuchillo, C.M., 1994: Expression of acinar and ductal products in capan-1 cells growing in synthetic serum and serum-free media. Background. Capan-1 is a human pancreatic adenocarcinoma cell line of presumed ductal origin. This is based on the histologic appearance of the tumor from which it arose. Yet considerable controversy exists regarding the actual cell of origin for...

Lappin, M.R.; Burney, D.P.; Hill, S.A.; Chavkin, M.J., 1995: Detection of Toxoplasma gondii-specific IgA in the aqueous humor of cats. Toxoplasma gondii-specific IgA, IgM, and IgG were measured by ELISA in the serum and aqueous humor of 29 client-owned cats with endogenous uveitis and 7 specific-pathogen-free cats tested sequentially for 20 weeks after inoculation with T. gondii....

Rodriguez-Iturbe, I.P.rporato, A.L.io, F.R.dolfi, L., 2001: Plants in water-controlled ecosystems: active role in hydrologic processes and response to water stress. I. Scope and general outline. This series of four papers studies the complex dynamics of water-controlled ecosystems from the hydro-ecological point of view [e.g., I. Rodriguez-Iturbe, Water Resour. Res. 36 (1) (2000) 3–9]. After this general outline, the role of climate...

Ma, L.; Pan, Y.; Man, W-Lun.; Kwong, H-Ki.; Lam, W.W.Y.; Chen, G.; Lau, K-Chung.; Lau, T-Chu., 2014: Highly efficient alkane oxidation catalyzed by [Mn(V)(N)(CN)4](2-). Evidence for [Mn(VII)(N)(O)(CN)4](2-) as an active intermediate. The oxidation of various alkanes catalyzed by [Mn(V)(N)(CN)4](2-) using various terminal oxidants at room temperature has been investigated. Excellent yields of alcohols and ketones (>95%) are obtained using H2O2 as oxidant and CF3CH2OH as solv...

Van Der Meeren, A.; Gaugler, M.H.lene; Mouthon, M.A.dre; Squiban, C.; Gourmelon, P., 1999: Interleukin 4 promotes survival of lethally irradiated mice in the absence of hematopoietic efficacy. The therapeutic potential of II4 in lethally irradiated mice was evaluated in C57BL6/J mice subjected to 7 to 10 Gy total-body irradiation (TBI) from a 60Co gamma-ray source. Il4 was administered 2 h after TBI either in a single injection or for 5...

Yukar, B.A.; Nalbantoglu, S., 1999: The first case of giardiosis in a budgerigar in Turkey. Giardia psittaci cysts and trophozoites were found by native and flotation methods in the stools of a 2-year-old male budgerigar, which showed clinical signs including ruffled feathers, lack of appetite, diarrhoea and depression, and did not respo...

Caramello Gandolfo, M.T.; Dalforno, S., 1969: Calcification and widespread ossification of the coronary tunica media in an infant with subendocardial fibroelastosis. Minerva Pediatrica 21(33): 1531-1535

Champagne, C.M.; Bray, G.A., 2014: Dietary management of the metabolic syndrome - one size fits all?. Diagnosis of metabolic syndrome includes a set of laboratory and physical findings, including central adiposity, elevated TAG, reduced HDL-cholesterol, hypertension and elevated fasting glucose or insulin resistance. While definitions have varied...

Griffiths, Pd, 1998: Are human herpesviruses -6 and -7 pathogens for transplant recipients?. Abstracts of the Interscience Conference on Antimicrobial Agents & Chemotherapy 38: 624