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BOR - Papers in Press, published online ahead of print December 29, 2004.
Biol Reprod 2004, 10.1095/biolreprod.104.036541
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Submitted September 27, 2004
Returned for revision November 1, 2004
Accepted December 16, 2004

Testis


Fra-1 Activity in the Frog, Rana esculenta, Testis: A New Potential Role in Sperm Transport

Gilda Cobellis , Monica Lombardi , Donatella Scarpa , Gaia Izzo , Giulia Fienga , Rosaria Meccariello , Riccardo Pierantoni *, and Silvia Fasano

* To whom correspondence should be addressed. E-mail: riccardo.pierantoni{at}unina2.it.

Abstract
Using an anti-Fos family member antibody we have previously described, in Rana esculenta testis, the presence of a nuclear 43 kDa protein that we hypothesised to be Fra-1. With the assistance of an antibody against Fra-1 (not cross-reacting with other Fos family members), we here report data on Fra-1 expression, localization and putative activity in Rana esculenta testis during the annual reproductive cycle. Western blot analysis confirms that the nuclear 43kDa protein is Fra-1. Immunocytochemistry validates the Western blot results and shows cytoplasmic and nuclear immunostaining of Fra-1 in peritubular myoid cells, efferent ducts and blood vessels. We report, for the first time in a vertebrate, experimental evidence showing that the expression of Fra-1 is related to peritubular myoid cells during sperm transport from tubular compartment to efferent ducts.

Key words: Male Reproductive Tract • Testis • Male sexual function • Sperm motility and transport


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G. Cobellis, G. Cacciola, D. Scarpa, R. Meccariello, R. Chianese, M. F. Franzoni, K. Mackie, R. Pierantoni, and S. Fasano
Endocannabinoid System in Frog and Rodent Testis: Type-1 Cannabinoid Receptor and Fatty Acid Amide Hydrolase Activity in Male Germ Cells
Biol Reprod, July 1, 2006; 75(1): 82 - 89.
[Abstract] [Full Text] [PDF]


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