Related Experiment Videos
[Preliminary observation of infectivity of isolated alveolar hydatid after cryopreservation]
1Hydatid Research Laboratory, Lanzhou Medical College.
Abstract:
Alveolar hydatids of Echinococcus multilocularis obtained from the peritoneal cavity of mice were subject to freezing at -10 degrees C and -30 degrees C respectively. After 130-200 days' storage, the alveolar hydatids were transferred into the mouse peritoneal cavity for viability and infectivity testing. It was found that the alveolar hydatids stored at -10 degrees C were more severely damaged than those stored at -30 degrees C. The viability of the isolated alveococcus lasted half a year at -30 degrees C.
Insights
Freezing Echinococcus multilocularis alveolar hydatids at -30°C for up to six months preserves their viability better than -10°C storage. This finding is crucial for parasite research and potential therapeutic strategies against alveolar echinococcosis.
Area of Science:
- Parasitology
- Infectious Diseases
- Cryobiology
Background:
- Alveolar echinococcosis, caused by Echinococcus multilocularis, is a severe parasitic infection.
- Effective long-term storage of E. multilocularis protoscoleces is essential for research and diagnostic purposes.
Purpose of the Study:
- To evaluate the impact of different freezing temperatures on the viability and infectivity of E. multilocularis alveolar hydatids.
- To determine the optimal cryopreservation conditions for E. multilocularis.
Main Methods:
- Alveolar hydatids were collected from infected mouse peritoneal cavities.
- Hydatids were stored at -10°C and -30°C for 130-200 days.
- Stored hydatids were re-introduced into mice to assess viability and infectivity.
Main Results:
- Storage at -10°C resulted in more severe damage to alveolar hydatids compared to -30°C.
- Alveolar hydatids maintained viability for at least six months when stored at -30°C.
- Infectivity data was not explicitly detailed but implied by viability testing.
Conclusions:
- Cryopreservation at -30°C is a more suitable method for preserving E. multilocularis viability than -10°C.
- Long-term storage of E. multilocularis protoscoleces is feasible at -30°C, supporting further research.