Microfilarial periodicity in Mastomys natalensis

Area of Science:

• Parasitology
• Infectious Diseases
• Mammalian Physiology

Background:

• Filarial parasites cause significant morbidity globally.
• Understanding microfilarial periodicity is crucial for diagnosis and treatment.
• Mastomys natalensis serves as a relevant animal model for filariasis research.

Purpose of the Study:

• To investigate the periodicity of Litomosoides carinii, Brugia pahangi, Brugia malayi, and Dipetalonema viteae microfilariae in Mastomys natalensis.
• To assess the effect of anesthesia on peripheral microfilarial levels.

Main Methods:

• Monitoring microfilarial levels in peripheral blood of infected Mastomys natalensis at two-hour intervals over 24 hours.
• Administering anesthesia (diethylether, pentothal sodium) to assess its impact on microfilarial counts.

Main Results:

• Brugia pahangi and Brugia malayi exhibited nocturnal and diurnal subperiodicity, respectively; Litomosoides carinii and Dipetalonema viteae showed no distinct periodicity.
• Anesthesia with diethylether or pentothal sodium significantly increased Brugia pahangi and Dipetalonema viteae microfilarial levels.
• Pentothal sodium was most effective in increasing microfilarial levels, while anesthesia showed no significant effect on Brugia malayi or a tendency to decrease Litomosoides carinii.

Conclusions:

• Microfilarial periodicity in Mastomys natalensis is parasite-specific.
• Anesthesia can be a useful tool to enhance microfilarial detection in peripheral blood for certain filarial species.
• The findings contribute to understanding filarial parasite dynamics and diagnostic strategies.