A prevalence study of Ureaplasma urealyticum (UU) infection of the male genital tract was carried out in Shanghai between March 1992 and June 1995.
Significantly higher frequency of UU infection was found among infertile males (549/1416) as compared to fertile controls (34/375).
Examination of 8 specimens each from infertile men and fertile subjects by electron microscopy, immunogold and immunofluorescence techniques, demonstrated adhesion of Ureaplasma urealyticum to the membrane of spermatozoa and exfoliated germ cells.
In addition, gold particles on Ureaplasma urealyticum were found to be adhered to the sperm surface in 4 of the 8 samples.
Strong specific anti-UU fluorescence was detected in 6 of 8 samples, mainly on the midpieces and post-acrosomal regions of the spermatozoa.
To further study the effects of Ureaplasma urealyticum on fertility, 47 male Sprague-Dawley (SD) rats were infected artificially with Ureaplasma urealyticum serotype 8 (T960).
Morphological changes in the seminiferous tubules were observed 3-5 weeks after inoculation in the sacrificed animals.
Dramatic impairment of spermatogenesis of both testes was found in 11 rats.
Mating experiment confirmed infertility in 12 of 40 rats.
Offsprings of the infected rats were significantly smaller than those of controls in terms of prenatal weights and birthweights.
Mots-clés Pascal : Epidémiologie, Surface cellulaire, Spermatozoïde, Rat, Rodentia, Mammalia, Vertebrata, Pathologie expérimentale, Bactériose, Infection, Ureaplasma urealyticum, Mycoplasmataceae, Mycoplasmatales, Mollicutes, Bactérie, Stérilité mâle, Cellule germinale, Sperme, Appareil génital mâle pathologie, Homme, Mâle
Mots-clés Pascal anglais : Epidemiology, Cell surface, Spermatozoa, Rat, Rodentia, Mammalia, Vertebrata, Experimental disease, Bacteriosis, Infection, Ureaplasma urealyticum, Mycoplasmataceae, Mycoplasmatales, Mollicutes, Bacteria, Male sterility, Germinal cell, Semen, Male genital diseases, Human, Male
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0442994
Code Inist : 002B05B02H. Création : 03/02/1998.