LH and testosterone secretions in response to GnRH challenge in pubertal Japanese Black beef bulls with normal and abnormal semen

Sakase, Mitsuhiro; Weerakoon, W.W.P.N.; Hannan, M.A.; Kohama, Namiko; Tamada, Hiromichi; Kawate, Noritoshi

doi:10.1292/jvms.18-0151

Cited by 4 publications

(4 citation statements)

References 17 publications

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“…Weerakoon et al 76 suggested reduced INSL3 concentrations in blood plasma surrounding puberty may be associated with semen aberration, especially morphological abnormality and low motility of sperm in fresh semen, in Japanese Black beef bulls. On the other hand, plasma LH and testosterone concentrations after a GnRH challenge did not differ between the beef bulls with normal and abnormal semen at 20 months of age 103 . In pubertal dairy bulls, which were experimentally fed with a low plane of nutrition from calfhood to 6 months of age, serum INSL3 concentrations as well as body weights, scrotal circumferences, and sperm concentrations were lower and age at when they reached puberty was also higher in bulls given a high plane of nutrition 104 …”

Section: Insl3 Secretions In Reproductive Disordersmentioning

confidence: 73%

“…GnRHchallenge did not differ between the beef bulls with normal and abnormal semen at 20 months of age 103. In pubertal dairy bulls, which were experimentally fed with a low plane of nutrition from calfhood to 6 months of age, serum INSL3 concentrations as well as body…”

mentioning

confidence: 86%

“…On the other hand, plasma LH and testosterone concentrations after a GnRH challenge did not differ between the beef bulls with normal and abnormal semen at 20 months of age. 103 In pubertal dairy bulls, which were experimentally fed with a low plane of nutrition from calfhood to 6 months of age, serum INSL3 concentrations as well as body weights, scrotal circumferences, and sperm concentrations were lower and age at when they reached puberty was also higher in bulls given a high plane of nutrition. 104 …”

Section: Insl3 Secretions In Reproductive Disordersmentioning

confidence: 99%

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Insulin‐like peptide 3 in domestic animals with normal and abnormal reproductive functions, in comparison to rodents and humans

Kawate

2022

Reprod Medicine & Biology

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Background Insulin‐like peptide 3 (INSL3) is a circulating hormone secreted from only testis and ovaries in mammals. Findings on INSL3 have been gathered from subjects with normal and abnormal reproductive statuses, especially rodents and humans. However, little to no review articles focusing on INSL3 in domestic animals exist. Methods The author reviewed the past and recent literature regarding the structure, expression, roles of INSL3 in the reproductive organs, and its circulation under normal and aberrant reproductive conditions in domestic animals in comparison with rodents and humans. Main findings As with humans and rodents, blood INSL3 concentrations rise around puberty in normal male domestic animals and are associated with testicular size. INSL3 levels are acutely upregulated by luteinizing hormone (LH), and the increase is smaller than that of testosterone in male ruminants, whereas the acute regulation of INSL3 by LH does not occur in human men. Dogs with cryptorchidism and bulls with abnormal semen have lowered INSL3 levels. Conclusion The findings regarding INSL3 secretions in male domestic animals with normal and aberrant reproductive functions illustrate similar or dissimilar points to humans and rodents. Data on blood INSL3 levels in normal and abnormal female domestic species are still limited and require further investigation.

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Section: Insl3 Secretions In Reproductive Disordersmentioning

confidence: 73%

mentioning

confidence: 86%

Section: Insl3 Secretions In Reproductive Disordersmentioning

confidence: 99%

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Insulin‐like peptide 3 in domestic animals with normal and abnormal reproductive functions, in comparison to rodents and humans

Kawate

2022

Reprod Medicine & Biology

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“…The previous study by El-Khawaga et al (2011) stated that injection of GnRH at dose 12 could maximize semen quality and libido of pubertal buffalo bulls. Testosterone secretory capacity before and after GnRH treatment can change plasma concentrations of LH and testosterone in bulls aged 20 months with normal semen (Sakase et al, 2018). Nevertheless, the study by Mondal et al (2019) stated that LH hormones and peripheral rhythm of testosterone could not be used to detect libido problems in Zebu bulls.…”

Section: Libidomentioning

confidence: 99%

Semen Quality of Ongole Crossbred Bull with Gonadotropin Realizing Hormone (GnRH) Treatment

Affandhy¹,

Luthfi²,

Widyaningrum³

et al. 2022

AAVS

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Administration GnRH to bulls is expected to improve semen quality. This study aims to determine the effect of giving the hormone GnRH in various doses on the quality of semen in Ongole Crossbreed (OC) bulls. The study used 18 OC bulls with three GnRH treatments, A (one dose/5ml/animal), B (half-dose/2.5ml/animal), and C without GnRH. The GnRH was administered once by intramuscular (IM) injection. Semen collection was carried out for 16 weeks; divided into two periods, namely 8 and 16 weeks after GnRH administration. Parameters that were measured include volume, acidity, color, consistency, mass motility, individual motility, spermatozoa concentration, viability, and libido. Data were analyzed using the ANOVA test. The results showed that the volume and pH of semen did not differ in all treatments, but treatment A showed cream color and thick consistency over treatments B and C. The mass motility and sperm concentration of treatment C with the dose and period of GnRH administration resulted in the lowest values significantly different (P<0.05) than treatments A and B, so it affects the total spermatozoa and the total motile spermatozoa. Sperm viability in one dose of treatment A resulted in the highest value significantly different (P<0.05) than treatment B and C with spermatozoa viability of 78.42±2.46% (A), 76.14±1.52% (B), and 65.57±8.26% (C) in the 16 weeks. Nevertheless, the abnormalities and libido between treatments and different periods did not show any difference. It was concluded that the administration of GnRH at a dose of 5 ml/IM can increase the mass motility, individual motility, sperm concentration, total spermatozoa, total motility of spermatozoa, and viability in Ongole Crossbred bulls.

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Comparative transcriptome analysis reveals potential testosterone function-related regulatory genes/pathways of Leydig cells in immature and mature buffalo (Bubalus bubalis) testes

Huang

Xiao

Zhang

et al. 2021

Gene

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LH and testosterone secretions in response to GnRH challenge in pubertal Japanese Black beef bulls with normal and abnormal semen

Cited by 4 publications

References 17 publications

Insulin‐like peptide 3 in domestic animals with normal and abnormal reproductive functions, in comparison to rodents and humans

Insulin‐like peptide 3 in domestic animals with normal and abnormal reproductive functions, in comparison to rodents and humans

Semen Quality of Ongole Crossbred Bull with Gonadotropin Realizing Hormone (GnRH) Treatment

Comparative transcriptome analysis reveals potential testosterone function-related regulatory genes/pathways of Leydig cells in immature and mature buffalo (Bubalus bubalis) testes

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