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Mathison BA, Bradbury RS, Pritt BS. Medical Parasitology Taxonomy Update, June 2020-June 2022. J Clin Microbiol 2023; 61:e0028622. [PMID: 36809084 PMCID: PMC10204622 DOI: 10.1128/jcm.00286-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
Abstract
The taxonomy of medically important parasites continues to evolve. This minireview provides an update of additions and updates in the field of human parasitology from June 2020 through June 2022. A list of previously reported nomenclatural changes that have not been broadly adapted by the medical community is also included.
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Affiliation(s)
- Blaine A. Mathison
- Institute for Clinical and Experimental Pathology, ARUP Laboratories, Salt Lake City, Utah, USA
| | | | - Bobbi S. Pritt
- Division of Clinical Microbiology, Mayo Clinic, Rochester, Minnesota, USA
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Koehler AV, Beveridge I, Spratt DM. A molecular characterization of marsupial filarioid nematodes of the genus Breinlia. Parasitology 2022; 150:1-6. [PMID: 36259355 PMCID: PMC10090590 DOI: 10.1017/s0031182022001482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 10/09/2022] [Accepted: 10/10/2022] [Indexed: 11/07/2022]
Abstract
Here we present the genetic relationships of 26 specimens of the genus Breinlia (Nematoda: Filarioidea) from a range of Australian marsupials using markers in the small subunit of nuclear ribosomal RNA and mitochondrial cytochrome c oxidase subunit 1 (cox1) genes and compare them with morphological determinations. The molecular data support the validity of most of the morpho-species included in the study and provide provisional insights into the phylogeny of the genus in Australian mammals, with dasyuroid marsupials appearing to be the original hosts. The recent discovery of Breinlia annulipapillata in the eye of a human brings this genus of parasites into the group of emerging infectious parasitic diseases.
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Affiliation(s)
- Anson V. Koehler
- Department of Veterinary Biosciences, School of Veterinary Science, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Victoria, Australia
| | - Ian Beveridge
- Department of Veterinary Biosciences, School of Veterinary Science, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Victoria, Australia
| | - David M. Spratt
- Australian National Wildlife Collection, Commonwealth Scientific and Industrial Research Organisation, Canberra, Australia
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Mathison BA, Sapp SGH. An annotated checklist of the eukaryotic parasites of humans, exclusive of fungi and algae. Zookeys 2021; 1069:1-313. [PMID: 34819766 PMCID: PMC8595220 DOI: 10.3897/zookeys.1069.67403] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 08/20/2021] [Indexed: 12/13/2022] Open
Abstract
The classification of "parasites" in the medical field is a challenging notion, a group which historically has included all eukaryotes exclusive of fungi that invade and derive resources from the human host. Since antiquity, humans have been identifying and documenting parasitic infections, and this collective catalog of parasitic agents has expanded considerably with technology. As our understanding of species boundaries and the use of molecular tools has evolved, so has our concept of the taxonomy of human parasites. Consequently, new species have been recognized while others have been relegated to synonyms. On the other hand, the decline of expertise in classical parasitology and limited curricula have led to a loss of awareness of many rarely encountered species. Here, we provide a comprehensive checklist of all reported eukaryotic organisms (excluding fungi and allied taxa) parasitizing humans resulting in 274 genus-group taxa and 848 species-group taxa. For each species, or genus where indicated, a concise summary of geographic distribution, natural hosts, route of transmission and site within human host, and vectored pathogens are presented. Ubiquitous, human-adapted species as well as very rare, incidental zoonotic organisms are discussed in this annotated checklist. We also provide a list of 79 excluded genera and species that have been previously reported as human parasites but are not believed to be true human parasites or represent misidentifications or taxonomic changes.
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Affiliation(s)
- Blaine A. Mathison
- Institute for Clinical and Experimental Pathology, ARUP Laboratories, Salt Lake City, UT, USAInstitute for Clinical and Experimental PathologySalt Lake CityUnited States of America
| | - Sarah G. H. Sapp
- Parasitic Diseases Branch, Division of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, GA, USACenters for Disease Control and PreventionAtlantaUnited States of America
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Steventon C, Koehler AV, Dobson E, Wicker L, Legione AR, Devlin JM, Harley D, Gasser RB. Detection of Breinlia sp. (Nematoda) in the Leadbeater's possum ( Gymnobelideus leadbeateri). Int J Parasitol Parasites Wildl 2021; 15:249-254. [PMID: 34258219 PMCID: PMC8255185 DOI: 10.1016/j.ijppaw.2021.06.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 06/17/2021] [Accepted: 06/21/2021] [Indexed: 11/26/2022]
Abstract
The Leadbeater's possum (Gymnobelideus leadbeateri) is a critically endangered marsupial in south-eastern Australia. Among other conservation efforts, free-ranging animals in the two remaining geographically separate populations (highland and lowland) have been extensively studied; however, little is known about their health and mortality. Although some wild populations are frequently monitored, cadavers are rarely recovered for post mortem examination. In June 2019, a recently deceased, wild, adult male lowland Leadbeater's possum was collected from a nest box and a comprehensive post mortem examination was conducted. Microfilariae of a filarioid nematode were observed in testes, liver, lung and skin samples in tissue impression smears and upon histopathological examination. No gross or histological changes were seen associated with the parasites, except for a focal area of tissue damage in the skin, suggesting that the possum is a natural host. Using a PCR-coupled sequencing method the filarioid was identified as a species of Breinlia. Species of Breinlia occur in other Australian marsupials and rodents.
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Affiliation(s)
- Chloe Steventon
- Australian Wildlife Health Centre, Healesville Sanctuary, Glen Eadie Avenue, Healesville, VIC 3777, Australia
- Department of Veterinary Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Anson V. Koehler
- Department of Veterinary Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Elizabeth Dobson
- Gribbles Veterinary Pathology, 1868 Dandenong Road, Clayton, VIC 3168, Australia
| | - Leanne Wicker
- Australian Wildlife Health Centre, Healesville Sanctuary, Glen Eadie Avenue, Healesville, VIC 3777, Australia
| | - Alistair R. Legione
- Department of Veterinary Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Joanne M. Devlin
- Department of Veterinary Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Dan Harley
- Wildlife Conservation & Science, Zoos Victoria, Healesville, VIC 3777, Australia
| | - Robin B. Gasser
- Department of Veterinary Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia
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