Seminal vesicle secretion of African catfish, its composition, its behaviour in water and saline solutions and its influence on gamete fertilizability

2004 ◽  
Vol 301A (9) ◽  
pp. 745-755 ◽  
Author(s):  
Nabil Mansour ◽  
Franz Lahnsteiner ◽  
Robert A. Patzner
Reproduction ◽  
2016 ◽  
Vol 152 (4) ◽  
pp. 313-321 ◽  
Author(s):  
Naoya Araki ◽  
Natsuko Kawano ◽  
Woojin Kang ◽  
Kenji Miyado ◽  
Kaoru Yoshida ◽  
...  

Mammalian spermatozoa acquire their fertilizing ability in the female reproductive tract (sperm capacitation). On the other hand, seminal vesicle secretion, which is a major component of seminal plasma, inhibits the initiation of sperm capacitation (capacitation inhibition) and reduces the fertility of the capacitated spermatozoa (decapacitation). There are seven major proteins involved in murine seminal vesicle secretion (SVS1-7), and we have previously shown that SVS2 acts as both a capacitation inhibitor and a decapacitation factor, and is indispensable forin vivofertilization. However, the effects of SVSs other than SVS2 on the sperm have not been elucidated. Since mouseSvs2–Svs6genes evolved by gene duplication belong to the same gene family, it is possible that SVSs other than SVS2 also have some effects on sperm capacitation. In this study, we examined the effects of SVS3 and SVS4 on sperm capacitation. Our results showed that both SVS3 and SVS4 are able to bind to spermatozoa, but SVS3 alone showed no effects on sperm capacitation. On the other hand, SVS4 acted as a capacitation inhibitor, although it did not show decapacitation abilities. Interestingly, SVS3 showed an affinity for SVS2 and it facilitated the effects of SVS2. Interaction of SVS2 and spermatozoa is mediated by the ganglioside GM1 in the sperm membrane; however, both SVS3 and SVS4 had weaker affinities for GM1 than SVS2. Therefore, we suggest that separate processes may cause capacitation inhibition and decapacitation, and SVS3 and SVS4 act on sperm capacitation cooperatively with SVS2.


1987 ◽  
Vol 36 (2) ◽  
pp. 501-510 ◽  
Author(s):  
Carrie L. Wagner ◽  
W. Stephen Kistler

Andrologia ◽  
2009 ◽  
Vol 22 (S1) ◽  
pp. 166-177
Author(s):  
M. Balerna ◽  
G. Medici ◽  
L. Mazzucchelli ◽  
T. Bianda ◽  
L. Marossi ◽  
...  

2008 ◽  
Vol 876 (2) ◽  
pp. 198-202 ◽  
Author(s):  
Huan-Chin Tseng ◽  
Han-Jia Lin ◽  
P.S. Sudhakar Gandhi ◽  
Chia-Yih Wang ◽  
Yee-Hsiung Chen

Aquaculture ◽  
1989 ◽  
Vol 83 (1-2) ◽  
pp. 137-151 ◽  
Author(s):  
J.W. Resink ◽  
W.G.E.J. Schoonen ◽  
P.C.H. Albers ◽  
D.M. Filé ◽  
C.D. Notenboom ◽  
...  

2017 ◽  
Vol 26 (5) ◽  
pp. 1041-1047
Author(s):  
Chidozie Nwabuisi Okoye ◽  
Susan Omuboba Dan-Jumbo ◽  
Anietie Francis Udoumoh ◽  
Ukamaka Uchenna Eze ◽  
Anthony Chukwuemeka Ozokoye ◽  
...  

Zygote ◽  
1999 ◽  
Vol 7 (3) ◽  
pp. 223-231 ◽  
Author(s):  
Rosa Carballada ◽  
Pedro Esponda

Fertile female Wistar rats were immunised against rat and mouse seminal vesicle secretion (SVS) to test the production of allo-antibodies and the effect of the antibodies elicited on fertility. Twenty-six per cent of the rat and mouse SVS-immunised females were infertile after the treatment. The sera were titrated by ELISA and used in Western blots to detect the proteins recognised. Although neither the antibody titres nor the proteins recognised by the sera showed a close relation with the degree of fertility, in all females the highest antibody titre in the fluids from the genital tract was found in the oviductal fluid and during the night of oestrus. This fact suggested that the site of action of the antibody could be the oviduct. Similar results were obtained using mouse SVS as immunogen – a fact that can be related to the antigenic similarity between the SVS of the two species. The antibodies react with the spermatozoa but not with eggs or embryos. Analyses performed on embryos collected from sterile females showed that there was a delay in fertilisation and normal embryogenesis. Our results suggest that SVS proteins are antigenic and that these antigens are bound to the spermatozoa and could take part in early pre-fertilisation events such as capacitation or sperm transport.


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