Chitinase is stored and secreted from the inner body of microfilariae and has a role in exsheathment in the parasitic nematode Brugia malayi
2008

Chitinase in Microfilariae of Brugia malayi

Sample size: 1000 publication 10 minutes Evidence: moderate

Author Information

Author(s): Wu Yang, Preston Gillian Bianco, Albert E.

Primary Institution: Liverpool School of Tropical Medicine

Hypothesis

Chitinase is stored in the inner body of microfilariae and plays a role in their exsheathment.

Conclusion

Chitinase is secreted during the exsheathment of microfilariae in the mosquito, which may aid in their infectivity.

Supporting Evidence

  • Chitinase expression coincides with the infectivity of microfilariae to mosquitoes.
  • Chitinase was localized to the inner body of microfilariae using immuno-electron microscopy.
  • Inhibition of chitinase activity reduced the exsheathment of microfilariae.

Takeaway

Microfilariae have a special protein called chitinase that helps them shed their outer layer when they enter mosquitoes.

Methodology

Immuno-electron microscopy was used to study chitinase localization, and chitinase activity was measured using fluorometric assays.

Potential Biases

Potential bias in antibody specificity and cross-reactivity with other species.

Limitations

The study primarily focused on specific species and may not generalize to all filarial nematodes.

Participant Demographics

Mongolian jirds were used as the animal model for the study.

Statistical Information

P-Value

p<0.05

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.1016/j.molbiopara.2008.06.007

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