Studying nycthemeral microfilarial density in eight carriers of Mansonella ozzardi, Nathan et al. concluded that there is an absence of periodicity in M. ozzardi in Trinidad. Re-examination of the results obtained shows evidence of crypto-periodicity. Two of the eight patients showed highly significant periodicity but the biorhythms appear to be almost out of phase, the respective peaks being at 18.00 hours and 02.00 hours. The six other patients showed no obvious periodicity; the calculated acrophases (peak hours), instead of being randomly spaced, regrouped with the preceding ones: late afternoon in two subjects and in the second half of the night for the other four. It is concluded that the apparent non-periodicity is due to the co-existence of two periodic forms, but these are markedly out of phase.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/0035-9203(83)90155-4 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Large-scale production of infective larvae from engorged .
Front Trop Dis
December 2024
Parasite and Vector Research Unit (PAVRU), Department of Microbiology and Parasitology, University of Buea, Buea, Cameroon.
Background: is transmitted by species and affects hundred millions of inhabitants in about 33 countries in sub-Saharan Africa. It is known that Mansonellosis due to do not result in a clear clinical picture, but down-regulates the immunity of patients predisposing them to other diseases like tuberculosis, HIV and malaria or damping vaccine efficacy. However, research about novel drugs against this filarial nematode is missing because of the lack of parasite material.
View Article and Find Full Text PDFMansonella ozzardi, a filarioid parasite, causes human mansonellosis in the Americas. We identified raccoons (Procyon lotor) as wildlife reservoirs of M. ozzardi in Costa Rica.
View Article and Find Full Text PDFSurvival and growth of M. perstans larvae in a human colon carcinoma cell line-based in vitro culture.
Exp Parasitol
October 2024
Institute of Medical Microbiology, Immunology and Parasitology (IMMIP), University Hospital Bonn (UKB), Bonn, Germany; German-West African Centre for Global Health and Pandemic Prevention (G-WAC), Partner Site Bonn, Bonn, Germany. Electronic address:
Mansonella perstans infections are widespread in Sub-Saharan Africa and Central and South America and thus can be considered as the most prevalent parasite of man in tropical Africa. In contrast to the high prevalence, knowledge about the biology of this filarial nematode is restricted and no effective treatment regimens of this ivermectin-resistant parasite is lacking. An obstacle for the research is that M.
View Article and Find Full Text PDFResponse to Prof. Robert Colebunders' Letter submitted to JNS regarding: Spencer PS, Valdes Angues R, Palmer VS. Nodding syndrome: A role for environmental biotoxins that dysregulate MECP2 expression? J Neurol Sci. 2024 Jul 15;462:123077. doi: 10.1016/j.jns.2024.123077.
J Neurol Sci
August 2024
Amsterdam Centre for Global Child Health, Emma Children's Hospital, Amsterdam UMC, Location University of Amsterdam, 1105 AZ Amsterdam, the Netherlands.
Detection and characterization of vector-borne parasites and Wolbachia endosymbionts in greater one-horned rhinoceros (Rhinoceros unicornis) in Nepal.
Acta Trop
October 2024
Laboratory of Parasitology, Graduate School of Infectious Diseases, Faculty of Veterinary Medicine, Hokkaido University, Japan; Division of Parasitology, Veterinary Research Unit, International Institute for Zoonosis Control, Hokkaido University, Japan. Electronic address:
Article Synopsis
- Vector-borne parasite infections are common in both domestic and wild animals, often asymptomatic but potentially fatal, particularly under stress.
- This study focused on the detection and characterization of such parasites in rescued greater one-horned rhinoceroses in Chitwan National Park, Nepal, using advanced molecular techniques on blood samples.
- Results revealed a 75% prevalence of Theileria bicornis, two new haplotypes, and the presence of Wolbachia and filarial nematodes, indicating a need for enhanced parasite surveillance and further research on wildlife diseases in the region.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!