Physiology : Effect of a single injection of gonadotropin-releasing hormone (GnRH) and human chorionic gonadotropin (hCG) on testicular blood flow measured by color doppler ultrasonography in male Shiba goats

• SAMIR Haney

  Laboratory of Veterinary Physiology, Tokyo University of Agriculture and Technology, Tokyo183–8509, Japan Department of Theriogenology, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt

• SASAKI Kazuaki

  Laboratory of Veterinary Pharmacology, Tokyo University of Agriculture and Technology, Tokyo 183–8509, Japan

• AHMED Eman

  Laboratory of Veterinary Physiology, Tokyo University of Agriculture and Technology, Tokyo183–8509, Japan Department of Pharmacology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, 41522, Egypt

• KAREN Aly

  Department of Theriogenology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh 13561, Egypt

• NAGAOKA Kentaro

  Laboratory of Veterinary Physiology, Tokyo University of Agriculture and Technology, Tokyo183–8509, Japan

• EL SAYED Mohamed

  Department of Theriogenology, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt

• TAYA Kazuyoshi

  Laboratory of Veterinary Physiology, Tokyo University of Agriculture and Technology, Tokyo183–8509, Japan

• WATANABE Gen

  Laboratory of Veterinary Physiology, Tokyo University of Agriculture and Technology, Tokyo183–8509, Japan

書誌事項

タイトル別名

• Effect of a single injection of gonadotropin-releasing hormone (GnRH) and human chorionic gonadotropin (hCG) on testicular blood flow measured by color doppler ultrasonography in male Shiba goats

抄録

Although color Doppler ultrasonography has been used to evaluate testicular blood flow in many species, very little has been done in goat. Eight male Shiba goats were exposed to a single intramuscular injection of either gonadotropin-releasing hormone (GnRH group; 1 µg/kg BW) or human chorionic gonadotropin (hCG group; 25 IU/kg BW). Plasma testosterone (T), estradiol (E2) and inhibin (INH) were measured just before (0 hr) and at different intervals post injection by radioimmunoassay. Testis volume (TV) and Doppler indices, such as resistive index (RI) and pulsatility index (PI) of the supratesticular artery, were measured by B-mode and color Doppler ultrasonography, respectively. The results indicated an increase in testicular blood flow in both groups, as RI and PI decreased significantly (P<0.05), but this increase was significant higher and earlier in hCG group (1 hr) than in the GnRH group (2 hr). A high correlation was found for RI and PI with both T (RI, r= −0.862; PI, r= −0.707) and INH in the GnRH group (RI, r=0.661; PI, r=0.701). However, a significant (P<0.05) correlation was found between E2 and both RI (r= −0.610) and PI (r= −0.763) in hCG group. In addition, TV significantly increased and was highly correlated with RI in both groups (GnRH, r= −0.718; hCG, r= −0.779). In conclusion, hCG and GnRH may improve testicular blood flow and TV in Shiba goats.

収録刊行物

• Ｔｈｅ　Ｊｏｕｒｎａｌ　ｏｆ　Ｖｅｔｅｒｉｎａｒｙ　Ｍｅｄｉｃａｌ　Ｓｃｉｅｎｃｅ

  Ｔｈｅ　Ｊｏｕｒｎａｌ　ｏｆ　Ｖｅｔｅｒｉｎａｒｙ　Ｍｅｄｉｃａｌ　Ｓｃｉｅｎｃｅ 77 (5), 549-556, 2015

  公益社団法人 日本獣医学会

キーワード

• blood supply
• goat
• testis

詳細情報

• CRID: 1390282681406617472
• NII論文ID: 130005071873
• NII書誌ID: AA10796138
• DOI: 10.1292/jvms.14-0633
• ISSN: 13477439
• ISSN: 09167250
• NDL書誌ID: 026448368
• PubMed: 25715956
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026448368
• Web Site: https://search.jamas.or.jp/link/ui/2016026399
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • PubMed
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可