Publication Database

Aggregation of adult parasitic nematodes in sex-mixed groups analysed by transient anomalous diffusion formalism (2024)

Art

Zeitschriftenartikel / wissenschaftlicher Beitrag

Autoren

Leben, Ruth (WE 6)

Rausch, Sebastian (WE 6)

Elomaa, Laura

Hauser, Anja E.

Weinhart, Marie

Fischer, Sabine C.

Stark, Holger

Hartmann, Susanne (WE 6)

Niesner, Raluca (WE 2)

Quelle

Interface : journal of the Royal Society

Bandzählung: 21

Heftzählung: 219

Seiten: 20240327

ISSN: 1742-5689

Sprache

Englisch

Verweise

URL (Volltext): https://royalsocietypublishing.org/doi/10.1098/rsif.2024.0327

DOI: 10.1098/rsif.2024.0327

Pubmed: 39379003

Kontakt

Institut für Immunologie

Robert-von-Ostertag-Str. 7-13
14163 Berlin
+49 30 838 51834
immunologie@vetmed.fu-berlin.de

Abstract / Zusammenfassung

Intestinal parasitic worms are widespread throughout the world, causing chronic infections in humans and animals. However, very little is known about the locomotion of the worms in the host gut. We studied the movement of Heligmosomoides bakeri, naturally infecting mice, and used as an animal model for roundworm infections. We investigated the locomotion of H. bakeri in simplified environments mimicking key physical features of the intestinal lumen, i.e. medium viscosity and intestinal villi topology. We found that the motion sequence of these nematodes is non-periodic, but the migration could be described by transient anomalous diffusion. Aggregation as a result of biased, enhanced-diffusive locomotion of nematodes in sex-mixed groups was detected. This locomotion is probably stimulated by mating and reproduction, while single nematodes move randomly (diffusive). Natural physical obstacles such as high mucus-like viscosity or villi topology slowed down but did not entirely prevent nematode aggregation. Additionally, the mean displacement rate of nematodes in sex-mixed groups of 3.0 × 10−3 mm s−1 in a mucus-like medium is in good agreement with estimates of migration velocities of 10−4 to 10−3 mm s−1 in the gut. Our data indicate H. bakeri motion to be non-periodic and their migration random (diffusive-like), but triggerable by the presence of kin.