R
Ricardo S. Calandra
Researcher at Instituto de Biología y Medicina Experimental
Publications - 108
Citations - 2360
Ricardo S. Calandra is an academic researcher from Instituto de Biología y Medicina Experimental. The author has contributed to research in topics: Androgen & Testosterone. The author has an hindex of 27, co-authored 107 publications receiving 2171 citations. Previous affiliations of Ricardo S. Calandra include Max Planck Society & Facultad de Ciencias Exactas y Naturales.
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Journal ArticleDOI
Number, distribution pattern, and identification of macrophages in the testes of infertile men.
Monica Beatriz Frungieri,Monica Beatriz Frungieri,Ricardo S. Calandra,Livia Lustig,Viktor Meineke,Frank M. Köhn,Hermann Josef Vogt,Artur Mayerhofer +7 more
TL;DR: Increased numbers of CD68-positive macrophages directly or indirectly are involved in the regulation of steroidogenesis, Sertoli cell activity, germ cell survival, and, in consequence, in the pathogenesis or maintenance of infertility states in the human testes.
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Prolactin binding in rat testis: Specific receptors in interstitial cells
TL;DR: The localization of prolactin receptors interstitial tissue suggests that the effect of Prolactin on LH/hCG-stimulated testosterone production is due to a direct effect of prolACTin of Leydig cells.
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Effect of GABA and benzodiazepines on testicular androgen production
TL;DR: The present results suggest that GABA plays a physiological role in the regulation of rat testicular androgen production depending on the stage of sexual maturation.
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Evidence for a GABAergic system in rodent and human testis: local GABA production and GABA receptors.
Christof Geigerseder,Richard F.G. Doepner,Andrea Thalhammer,Monica Beatriz Frungieri,Katia Gamel-Didelon,Ricardo S. Calandra,Frank M. Köhn,Artur Mayerhofer +7 more
TL;DR: Molecular details of the components of an intratesticular GABAergic system expressed in the endocrine compartment of rodent and human testes are described, suggesting the possibility that clinically used drugs might be able to interfere with testicular function.
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Cyclooxygenase-2 and Prostaglandin F2α in Syrian Hamster Leydig Cells: Inhibitory Role on Luteinizing Hormone/Human Chorionic Gonadotropin-Stimulated Testosterone Production
Monica Beatriz Frungieri,Monica Beatriz Frungieri,Silvia I. Gonzalez-Calvar,Silvia I. Gonzalez-Calvar,Fernanda Parborell,Martin Albrecht,Artur Mayerhofer,Ricardo S. Calandra +7 more
TL;DR: A COX-2-initiated pathway that via PGF2 alpha production, P GF2 alpha receptors, steroidogenic acute regulatory protein, and 17beta-hydroxysteroid dehydrogenase represents a physiological local inhibitory system of human chorionic gonadotropin-stimulated testosterone production in the Syrian hamster testes is described.