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Hatching of Schistosoma mansoni eggs is a Ca2+/calmodulin-dependent process
T Katsumata1, S Kohno, K Yamaguchi
1Second Department of Internal Medicine, Nagasaki University School of Medicine, Japan.
Parasitology Research
|January 1, 1989
Summary
Calcium channel blockers and calmodulin antagonists inhibit Schistosoma mansoni egg hatching. This suggests that egg hatching is a calcium/calmodulin-dependent process, offering potential targets for controlling this parasitic disease.
Area of Science:
- Parasitology
- Molecular Biology
- Pharmacology
Background:
- Schistosoma mansoni is a parasitic flatworm causing schistosomiasis, a significant global health concern.
- Egg hatching is a critical stage in the parasite's life cycle and a potential target for intervention.
Purpose of the Study:
- To investigate the role of calcium ions and calmodulin in the hatching process of Schistosoma mansoni eggs.
- To evaluate the effects of specific calcium channel blockers and a calmodulin antagonist on egg viability and hatching.
Main Methods:
- Schistosoma mansoni eggs were incubated in freshwater under various conditions.
- The effects of diltiazem, verapamil (calcium channel blockers), and W-7 (calmodulin antagonist) on egg hatching were assessed in a dose-dependent manner.
Main Results:
- Diltiazem and W-7 significantly inhibited the hatching of Schistosoma mansoni eggs in a dose-dependent manner.
- Verapamil showed only a slight inhibitory effect on egg hatching.
- The findings indicate a crucial role for calcium and calmodulin in the hatching mechanism.
Conclusions:
- Schistosoma mansoni egg hatching is a Ca2+/calmodulin-dependent process.
- Targeting calcium signaling pathways may offer a novel strategy for the control of schistosomiasis.
- Diltiazem and W-7 demonstrate potential as agents to disrupt parasite reproduction.