[In vivo anti-fecundity effect of recombinant Sjc26 GST against Schistosoma japonicum in immunized mice].
OBJECTIVE
To observe the anti-fecundity effect of recombinant Sjc26 GST against Schistosoma japonicum and its mechanism.


METHODS
Male ICR mice were immunized with rSjc26 GST. Five days after final injection, mice of the immunization and control groups were challenged with 40 +/- 1 S. japonicum cercariae. All mice were sacrified at 6 weeks after challenge.


RESULTS
The worm reduction rate was 30.0%, and the egg reduction rates in the liver and in the spleen were 57.1% and 79.9%, respectively. Inhibition of the vitelline gland and testis was also observed by transmission electron microscopy. The number of vitelline globes, vitelline droplets and lipid droplets in the cytoplasm of vitelline cell and the number of lipid droplets in the supporting cells and the number of spermatids in the testis were apparently reduced.


CONCLUSIONS
The damage of the main reproductive organs of Schistosoma japonicum was one of the factors responsible for rSjc26 GST-bound anti-fecundity action.
Jiang
J
J
Institute of Parasitic Diseases, Zhejiang Academy of Medical Sciences, Hangzhou 310013.
Tu
L
L
Zhang
S
S
Xu
M
M
Liu
S
S
D000818:Animals; D005298:Fertility; D005982:Glutathione Transferase / Q000276:immunology*; D015801:Helminth Proteins / Q000276:immunology*; D008099:Liver / Q000469:parasitology; D008297:Male; D051379:Mice; D008813:Mice, Inbred ICR; D010270:Parasite Egg Count; D011994:Recombinant Proteins / Q000276:immunology; D012549:Schistosoma japonicum / Q000276:immunology*; D013154:Spleen / Q000469:parasitology; D014614:Vaccines, Synthetic / Q000276:immunology
D015801:Helminth Proteins; D011994:Recombinant Proteins; D014614:Vaccines, Synthetic; D005982:Glutathione Transferase