Related Experiment Videos
Cell-mediated immunity to Dirofilaria immitis.
Japanese Journal of Medical Science & Biology
|February 1, 1975
Summary
Cell-mediated immunity against Dirofilaria immitis (heartworm) involves specific immune responses in guinea pigs. These responses include cellular antibodies and cytotoxic activity, crucial for combating heartworm infection.
Area of Science:
- Immunology
- Veterinary Parasitology
Background:
- Cell-mediated immunity plays a critical role in host defense against parasitic infections.
- Dirofilaria immitis (heartworm) infection elicits complex immune responses in mammalian hosts.
Purpose of the Study:
- To confirm and characterize cell-mediated immunity to Dirofilaria immitis in a guinea pig model.
- To investigate the role of cellular antibodies and cytotoxic activity in the immune response to Dirofilaria immitis.
Main Methods:
- Migration Inhibition Test (MIT)
- Blast Transformation Test (BTT)
- Delayed Skin Reaction
- Passive Transfer of Sensitized Peritoneal Exudate (PE) Cells
- In vitro and In vivo Cytotoxicity Tests using Microfilariae (Mf)
Main Results:
- Cell-mediated immunity was confirmed through multiple immunological assays.
- Cellular antibodies appeared by day 4 post-sensitization, with DNA synthesis in lymphocytes starting earlier.
- Both in vitro and in vivo cytotoxicity assays demonstrated increased activity in sensitized cells and tissues.
Conclusions:
- Guinea pigs mount a significant cell-mediated immune response to Dirofilaria immitis.
- Cellular antibodies and enhanced cytotoxic activity are key components of the anti-heartworm immune mechanism.
- These findings provide insights into the immune mechanisms against Dirofilaria immitis infection.