Please use this identifier to cite or link to this item: http://repository.li.mahidol.ac.th/dspace/handle/123456789/36085
Title: The suitability of laboratory-bred Anopheles cracens for the production of Plasmodium vivax sporozoites
Authors: Chiara Andolina
Jordi Landier
Verena Carrara
Cindy S. Chu
Jean François Franetich
Alison Roth
Laurent Rénia
Clémentine Roucher
Nick J. White
Georges Snounou
François Nosten
Mahidol University
Nuffield Department of Clinical Medicine
Sorbonne Universite
Inserm
CNRS Centre National de la Recherche Scientifique
University of South Florida Health
Agency for Science, Technology and Research, Singapore
Keywords: Immunology and Microbiology;Medicine
Issue Date: 12-Aug-2015
Citation: Malaria Journal. Vol.14, No.1 (2015)
Abstract: © 2015 Andolina et al. Background: A stenogamous colony of Anopheles cracens (A. dirus B) established 20 years ago in a Thai insectary proved susceptible to Plasmodium vivax. However, routine sporozoite production by feeding on field-collected blood samples has not been described. The setting-up of an A. cracens colony in an insectary on the Thai-Myanmar border and the process of using P. vivax field samples for the production of infectious sporozoites are described. Methods: The colony was started in 2012 from egg batches that were sent from the Department of Parasitology, Faculty of Medicine, University of Chiang Mai, to the Shoklo Malaria Research Unit (SMRU), on wet filter paper in sealed Petri dishes. From May 2013 to December 2014, P. vivax-infected blood samples collected from patients seeking care at SMRU clinics were used for membrane feeding assays and sporozoite production. Results: Mosquitoes were fed on blood samples from 55 patients, and for 38 (69 %) this led to the production sporozoites. The average number of sporozoites obtained per mosquito was 26,112 (range 328-79,310). Gametocytaemia was not correlated with mosquito infectiousness (p = 0.82), or with the number of the sporozoites produced (Spearman's ρ = -0.016, p = 0.905). Infectiousness did not vary with the date of collection or the age of the patient. Mosquito survival was not correlated with sporozoite load (Spearman's ρ = 0.179, p = 0.282). Conclusion: Consistent and routine P. vivax sporozoites production confirms that A. cracens is highly susceptible to P. vivax infection. Laboratory-bred colonies of this vector are suitable for experimental transmission protocols and thus constitute a valuable resource.
URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84938861478&origin=inward
http://repository.li.mahidol.ac.th/dspace/handle/123456789/36085
ISSN: 14752875
Appears in Collections:Scopus 2011-2015

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