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African Journal of Traditional, Complementary and Alternative Medicines
African Ethnomedicines Network
ISSN: 0189-6016
Vol. 8, No. 1, 2011, pp. 69-78
Bioline Code: tc11011
Full paper language: English
Document type: Research Article
Document available free of charge

African Journal of Traditional, Complementary and Alternative Medicines, Vol. 8, No. 1, 2011, pp. 69-78

 en Steroidogenic enzyme histochemistry in the testis of sprague dawley rats following the administration the water extracts from carica papaya seed
Nwachi-Uche, E.O.; Mitchell, C.V. & McEwen, C.


Water extracts from pawpaw seed have been reported to reversibly decrease the testicular weight and to suppress spermatogenesis, and fertility of Wistar rats. The reversible changes become evident, 30 – 45 days after the withdrawal of the extract. The possible effect of this extract on the activities of steroidogenic enzymes of the testis has not been investigated. Water extract of papaya seeds was administered to male Sprague Dawley rats ad libitum for 84 days. Following the discontinuation of the extracts, ten rats each were sacrificed on days 0, 10, 20 and 30 after the withdrawal. Their testes were quickly dissected out and frozen. Cryostat sections, 10μm thick were cut. These sections were used for immunohistochemical stains for side chain cleavage enzyme and aromatase, and for histochemical stains for 17-β Hydroxysteroid dehydrogenase, 3-β Hydroxysteroid dehydrogenase. We conclude that the water extract of papaya seed suppresses the activities of steroidogenic enzymes in the testis of Sprague Dawley rats, and that this may contribute to reversible suppression of spermatogenesis, a property that gives a possible male contraceptive potential.

carica papaya seed extract; steroidogenic enzyme histochemistry

© Copyright 2011 Afr. J. Trad. CAM.
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