Literature DB >> 2513222

A gonadotropin releasing hormone analog induces spermiation in intact and hypophysectomized frogs, Rana esculenta.

S Minucci1, L Di Matteo, G Chieffi Baccari, R Pierantoni.   

Abstract

The sperm-releasing activity of a gonadotropin releasing hormone (GnRH) agonist, Buserelin (GnRH) and hypophysis homogenate (PD) preparations was studied in intact and hypophysectomized (PDX) frogs, Rana esculenta. In addition, human chorion gonadotropin (hCG) was tested in PDX animals, and GnRH antagonist (GnRHA) treatments were carried out in intact and PDX animals, in combination with the hormonal injections. GnRH or PD treatments were able to elicit spermiation in intact and PDX animals. While GnRH, injected 24 h later, was again effective in inducing spermiation in intact animals, this was not the case in PDX frogs. GnRHA counteracted GnRH effects in intact frogs. Moreover, in PDX animals GnRHA injections counteracted the sperm-releasing activity induced by hCG or GnRH, but failed to inhibit sperm-releasing activity induced by PD homogenate.

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Year:  1989        PMID： 2513222     DOI： 10.1007/bf01950175

Source DB:  PubMed          Journal:  Experientia        ISSN： 0014-4754


  9 in total

1.  In vivo and in vitro stimulatory effect of a gonadotropin-releasing hormone analog (HOE 766) on spermatogonial multiplication in the frog, Rana esculenta.

Authors:  S Minucci; L Di Matteo; R Pierantoni; B Varriale; R K Rastogi; G Chieffi
Journal:  Endocrinology       Date:  1986-08       Impact factor: 4.736

2.  A gonadotropin-releasing hormone (GnRH) antagonist decreases androgen production and spermatogonial multiplication in frog (Rana esculenta): indirect evidence for the existence of GnRH or GnRH-like material receptors in the hypophysis and testis.

Authors:  L Di Matteo; S Minucci; S Fasano; R Pierantoni; B Varriale; G Chieffi
Journal:  Endocrinology       Date:  1988-01       Impact factor: 4.736

3.  Seasonal testosterone profile and testicular responsiveness to pituitary factors and gonadotrophin releasing hormone during two different phases of the sexual cycle of the frog (Rana esculenta).

Authors:  R Pierantoni; L Iela; M d'Istria; S Fasano; R K Rastogi; G Delrio
Journal:  J Endocrinol       Date:  1984-09       Impact factor: 4.286

4.  Stimulatory effect of a GnRH agonist (buserelin) in in vitro and in vivo testosterone production by the frog (Rana esculenta) testis.

Authors:  R Pierantoni; S Fasano; L Di Matteo; S Minucci; B Varriale; G Chieffi
Journal:  Mol Cell Endocrinol       Date:  1984-12       Impact factor: 4.102

Review 5.  Local control of testicular function.

Authors:  R M Sharpe
Journal:  Q J Exp Physiol       Date:  1983-07

6.  A gonadotropin-like thermostable peptide, prepared from bovine anterior pituitary, inducing spermiation in the frog Rana esculenta (L.) and binding to a rat ovarian FSH receptor.

Authors:  S Renlund; P Hallin
Journal:  Gen Comp Endocrinol       Date:  1985-12       Impact factor: 2.822

7.  HCG stimulation of testicular LHRH-like activity.

Authors:  R M Sharpe; H M Fraser
Journal:  Nature       Date:  1980-10-16       Impact factor: 49.962

8.  Actions of agonistic and antagonistic analogs of gonadotropin releasing hormone (Gn-RH) in the bullfrog Rana catesbeiana.

Authors:  B R McCreery; P Licht; R Barnes; J E Rivier; W W Vale
Journal:  Gen Comp Endocrinol       Date:  1982-04       Impact factor: 2.822

9.  Gonadotropin-releasing hormone induces ovulation in hypophysectomized rats: studies on ovarian tissue-type plasminogen activator activity, messenger ribonucleic acid content, and cellular localization.

Authors:  A J Hsueh; Y X Liu; S Cajander; X R Peng; K Dahl; P Kristensen; T Ny
Journal:  Endocrinology       Date:  1988-04       Impact factor: 4.736
  9 in total
  6 in total

1.  Extrapituitary gonadotropin-releasing hormone (GnRH) binding sites in goldfish.

Authors:  H R Habibi; D Pati
Journal:  Fish Physiol Biochem       Date:  1993-07       Impact factor: 2.794

2.  Hormonal induction of spawning in 4 species of frogs by coinjection with a gonadotropin-releasing hormone agonist and a dopamine antagonist.

Authors:  Vance L Trudeau; Gustavo M Somoza; Guillermo S Natale; Bruce Pauli; Jacqui Wignall; Paula Jackman; Ken Doe; Fredrick W Schueler
Journal:  Reprod Biol Endocrinol       Date:  2010-04-16       Impact factor: 5.211

3.  Effects of luteinizing hormone-releasing hormone and arginine-vasotocin on the sperm-release response of Günther's Toadlet, Pseudophryne guentheri.

Authors:  Aimee J Silla
Journal:  Reprod Biol Endocrinol       Date:  2010-11-08       Impact factor: 5.211

4.  Dopamine regulation of testicular activity in intact and hypophysectomized frogs, Rana esculenta.

Authors:  S Minucci; S Fasano; M D'Antonio; R Pierantoni
Journal:  Experientia       Date:  1993-01-15

5.  Expression analysis of gnrh1 and gnrhr1 in spermatogenic cells of rat.

Authors:  Vincenza Ciaramella; Rosanna Chianese; Paolo Pariante; Silvia Fasano; Riccardo Pierantoni; Rosaria Meccariello
Journal:  Int J Endocrinol       Date:  2015-03-12       Impact factor: 3.257

Review 6.  Intra-testicular signals regulate germ cell progression and production of qualitatively mature spermatozoa in vertebrates.

Authors:  Rosaria Meccariello; Rosanna Chianese; Teresa Chioccarelli; Vincenza Ciaramella; Silvia Fasano; Riccardo Pierantoni; Gilda Cobellis
Journal:  Front Endocrinol (Lausanne)       Date:  2014-05-08       Impact factor: 5.555
  6 in total

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