Passive immunization against inhibin increases testicular blood flow in male goats

被引:10
|
作者
Samir, Haney [1 ,2 ]
El Sayed, Mohamed A. I. [2 ]
Nagaoka, Kentaro [1 ]
Sasaki, Kazuaki [3 ]
Abo El-Maaty, Amal M. [4 ]
Karen, Aly [5 ]
Abou-Ahmed, Mostafa M. [2 ]
Watanabe, Gen [1 ]
机构
[1] Tokyo Univ Agr & Technol, Vet Physiol Lab, Tokyo 1838509, Japan
[2] Cairo Univ, Fac Vet Med, Dept Theriogenol, Giza 12211, Egypt
[3] Tokyo Univ Agr & Technol, Lab Vet Pharmacol, Tokyo 1838509, Japan
[4] Natl Res Ctr, Vet Res Div, Dept Anim Reprod & Artificial Inseminat, Giza, Egypt
[5] Kafrelsheikh Univ, Fac Vet Med, Dept Theriogenol, Kafrelsheikh 13561, Egypt
基金
日本学术振兴会;
关键词
Doppler ultrasonography; Goat; Inhibin; Passive immunization; Testicular blood flow; FOLLICLE-STIMULATING-HORMONE; DOPPLER ULTRASONOGRAPHY; PLASMA-CONCENTRATIONS; ENDOTHELIAL FUNCTION; SPERM PRODUCTION; FSH-SECRETION; UTERINE; SIZE; IMMUNONEUTRALIZATION; ESTRADIOL-17-BETA;
D O I
10.1016/j.theriogenology.2019.12.022
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
The present study investigated whether or not passive immunization against inhibin modulates testicular blood flow in goats. Male Shiba goats were injected with either 10 ml of inhibin antiserum (INH group; n = 5) or 10 ml of normal castrated goat serum (NGS group; n = 4). Concentrations of FSH, LH, testosterone (T), and estradiol (E2) in the plasma were measured by radioimmunoassay. Blood flow within the supratesticular (STA) and marginal testicular arteries (MTA) were measured by color pulsed Doppler ultrasonography, and Doppler indices (resistive index; RI and pulsatility index; PI) were recorded. Results revealed significant increases in concentrations of FSH and E2 in the INH group compared to those in the NGS group (P < 0.05). Animals in the INH group had greater (P < 0.05) FSH concentrations than those in the NGS group in the period between 60 h and 144 h after treatment than at any other time. Estradiol concentrations were greater (P < 0.05) in the INH group than in the NGS group at 6 h (12.15 +/- 2.09 pg/ml vs 5.49 +/- 1.17 pg/mL), 12 h (8.27 +/- 1.29 pg/mL vs 3.05 +/- 0.38 pg/mL), and 36 h (935 +/- 1.31 pg/mL vs 5.09 +/- 0.46 pg/mL) after treatment than at any other time. Concentrations of LH and T did not significantly change between the two groups. Goats in the INH group had lesser (P < 0.05) RI of the STA than those in the NGS group and RI values were lesser at 24 h (0.37 +/- 0.031 vs 0.49 +/- 0.004) and 120 h (0.38 +/- 0.028 vs 0.55 +/- 0.048) after treatment than at any other time. Furthermore, values of RI and PI of the MTA were significantly lesser (P < 0.05) in the INH group compared to those in the control group at 48 h (RI of MTA: 0.21 +/- 0.014 vs 0.37 +/- 0.039; PI of MTA: 0.24 +/- 0.016 vs 0.46 +/- 0.058) after treatment than at any other time. In conclusion, passive immunization against inhibin has a stimulatory effect on testicular blood flow in goats by inducing decreases in the RI values of the STA and MTA. (C) 2020 Elsevier Inc. All rights reserved.
引用
收藏
页码:85 / 91
页数:7
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