Giovanni Chieffi
University of Naples Federico II
97 Papers
1K Citations
Giovanni Chieffi is an academic researcher from University of Naples Federico II. The author has contributed to research in topics: Harderian gland & Androgen. The author has an hindex of 23, co-authored 97 publications. Previous affiliations of Giovanni Chieffi include Utrecht University & Seconda Università degli Studi di Napoli.
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Papers
Cell Biology of the Harderian Gland
Giovanni Chieffi,Gabriella Chieffi Baccari,Di Matteo L,Michela d'Istria,Sergio Minucci,Bruno Varriale +5 more
TL;DR: The harderian gland is an orbital gland of the majority of land vertebrates and is the only orbital gland in anuran amphibians since the lacrimal gland develops later during phylogenesis in some reptilian species.
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Ovarian activity and reproduction in the frog, Rana esculenta
Rakesh K. Rastogi,I. Izzo‐Vitiello,M. Di Meglio,L. Di Matteo,R. Franzese,M. Di Costanzo,Sergio Minucci,L. Iela,Giovanni Chieffi +8 more
TL;DR: Rana esculenta specimens were collected, during the last 13 years, in well-defined areas around Naples, and the importance of some endocrine and exocrine factors for the regulation of ovarian activity and reproduction is discussed.
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Stimulatory effect of a GnRH agonist (buserelin) in in vitro and in vivo testosterone production by the frog (Rana esculenta) testis
Riccardo Pierantoni,Silvia Fasano,L. Di Matteo,Sergio Minucci,Bruno Varriale,Giovanni Chieffi +5 more
TL;DR: In vivo, a direct effect of GnRHa on testicular testosterone production was demonstrated in hypophysectomized animals, although this effect was temperature-dependent, requiring the frog to be maintained at a high temperature.
70
Plasma and testicular estradiol and plasma androgen profile in the male frog Rana esculenta during the annual cycle.
Bruno Varriale,Riccardo Pierantoni,L. Di Matteo,Sergio Minucci,Silvia Fasano,Mauro D'Antonio,Giovanni Chieffi +6 more
TL;DR: Seasonal plasma and testicular estradiol levels were measured in the male frogs, Rana esculenta, by radioimmunoassay and a simultaneous measurement of androgens was carried out in order to investigate a possible relationship between androgens and Estradiol-17 beta.
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The effects of antiandrogens and antiestrogens in nonmammalian vertebrates.
TL;DR: The mesculinizing effects of CPA on one hand and lack of any effect of ICI 46474 strongly suggest that embryonic sex inductors are different from gonadal steroids.
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