Maporal virus, a hantavirus associated with the fulvous pygmy rice rat (Oligoryzomys fulvescens) in western Venezuela

Fulhorst, Charles E.

doi:10.1016/s0168-1702(04)00183-2

Cited by 7 publications

(13 citation statements)

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“…2). The accurate specific assignment of individuals of Oligoryzomys from Central and northern South America has epidemiological importance since specimens assigned to O. fulvescens from western Venezuela have been associated with Maporal hantavirus (Fulhorst et al. 2004), whereas O. fulvescens from Panama has been associated with Choclo hantavirus (Vincent et al.…”

Section: Discussionmentioning

confidence: 99%

Phylogenetic relationships among species of the genus Oligoryzomys (Rodentia, Cricetidae) from Central and South America

González‐Ittig¹,

Salazar‐Bravo²,

Bárquez³

et al. 2010

Zoologica Scripta

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2010). Phylogenetic relationships among species of the genus Oligoryzomys (Rodentia, Cricetidae) from Central and South America. -Zoologica Scripta, 39, 511-526. The genus Oligoryzomys includes several species very similar in external morphology, which has resulted in a confusing specific taxonomy. Accurate species identification is particularly important because several species of Oligoryzomys act as natural hosts of hantaviruses affecting humans. Here, we assign specific status to individuals from a wide geographical area of Argentina and Chile using sequences of the mtDNA control region. We also compare cytochrome b sequences of 14 species recognized from Central and South America to infer the phylogenetic relationships within the genus. In addition, the results were analysed using available data on chromosome numbers, and the host-parasite relationships reported for the genus Hantavirus. We confirm the geographical distribution of Oligoryzomys longicaudatus (Argentina, Chile), Oligoryzomys nigripes (Argentina, Paraguay, Brazil), Oligoryzomys chacoensis (Argentina, Bolivia, Paraguay), Oligoryzomys fornesi (Argentina, Paraguay), Oligoryzomys destructor (Argentina, Bolivia) and Oligoryzomys microtis (Bolivia, Brazil). Oligoryzomys longicaudatus is strongly related to the Oligoryzomys flavescens complex, which comprises four clades; O. nigripes is closely related to Oligoryzomys stramineus, and Oligoryzomys vegetus, to Oligoryzomys fulvescens from Central America. Oligoryzomys chacoensis, O. destructor, O. fornesi, O. longicaudatus, O. microtis, O. nigripes, O. stramineus, Oligoryzomys moojeni, Oligoryzomys rupestris, O. fulvescens and O. vegetus are confirmed as valid species, whereas O. flavescens, Oligoryzomys magellanicus, Oligoryzomys griseolus, Oligoryzomys victus, Oligoryzomys andinus and Oligoryzomys arenalis need exhaustive revision. The sister species to all the remaining entities of the genus was O. microtis, suggesting an Amazonian origin for the genus.

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Section: Discussionmentioning

confidence: 99%

Phylogenetic relationships among species of the genus Oligoryzomys (Rodentia, Cricetidae) from Central and South America

González‐Ittig¹,

Salazar‐Bravo²,

Bárquez³

et al. 2010

Zoologica Scripta

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“…However, some hantavirus genotypes have been described in the same rodent species. Such is the case of Playa de Oro (OROV) and Catacamas (CATV) identified in Oryzomys couesi [141,142], or Maporal (MAPV) and Choclo (CHOV) hosted by O. fulvescens [91,143]. In North America both Muleshoe and Black Creek Canal hantaviruses have been detected in geographically-distant Sigmodon hispidus [144,145].…”

Section: Rodent Reservoirs and Cross-species Transmissionmentioning

confidence: 99%

Hantaviruses in the Americas and Their Role as Emerging Pathogens

Hjelle

Torres-Pérez

2010

Viruses

107

113

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The continued emergence and re-emergence of pathogens represent an ongoing, sometimes major, threat to populations. Hantaviruses (family Bunyaviridae) and their associated human diseases were considered to be confined to Eurasia, but the occurrence of an outbreak in 1993–94 in the southwestern United States led to a great increase in their study among virologists worldwide. Well over 40 hantaviral genotypes have been described, the large majority since 1993, and nearly half of them pathogenic for humans. Hantaviruses cause persistent infections in their reservoir hosts, and in the Americas, human disease is manifest as a cardiopulmonary compromise, hantavirus cardiopulmonary syndrome (HCPS), with case-fatality ratios, for the most common viral serotypes, between 30% and 40%. Habitat disturbance and larger-scale ecological disturbances, perhaps including climate change, are among the factors that may have increased the human caseload of HCPS between 1993 and the present. We consider here the features that influence the structure of host population dynamics that may lead to viral outbreaks, as well as the macromolecular determinants of hantaviruses that have been regarded as having potential contribution to pathogenicity.

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“…3,5,6,[9][10][11][12] None of the 9 other hantaviruses native to the Americas, including Maporal virus (MAPV), has been associated with HPS or any other human disease. [13][14][15] Specific members of the rodent family Cricetidae are the principal hosts of the hantaviruses known to cause HPS. For example, the deer mouse (Peromyscus maniculatus) in the western United States is the principal host of SNV, 16 the fulvous pygmy rice rat (Oligoryzomys fulvescens) in western Panama is the principal host of CHOV, 3 the fulvous pygmy rice rat (O. fulvescens) in western Venezuela is the principal host of MAPV, 15 and the long-tailed pygmy rice rat (Oligoryzomys longicaudatus) in Argentina and Chile is the principal host of ANDV.…”

Section: Introductionmentioning

confidence: 99%

Choclo Virus Infection in the Syrian Golden Hamster

Eyzaguirre

Milazzo

Koster

et al. 2008

The American Journal of Tropical Medicine and Hygiene

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Andes virus and Choclo virus are agents of hantavirus pulmonary syndrome. Andes virus in hamsters almost always causes a disease that is pathologically indistinguishable from fatal hantavirus pulmonary syndrome. The purpose of this study was to assess the pathogenicity of Choclo virus in hamsters. None of 18 hamsters infected with Choclo virus exhibited any symptom of disease. No evidence of inflammation or edema was found in the lungs of the 10 animals killed on days 7, 9, 11, 13, and 16 post-inoculation or in the lungs of the 8 animals killed on day 28 post-inoculation; however, hantavirus antigen was present in large numbers of endothelial cells in the microvasculature of the lungs of the animals killed on days 7, 9, 11, and 13 post-inoculation. These results suggest that infection in the microvasculature of lung tissue alone does not result in the life-threatening pulmonary edema in hamsters infected with Andes virus.

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Maporal virus, a hantavirus associated with the fulvous pygmy rice rat (Oligoryzomys fulvescens) in western Venezuela

Cited by 7 publications

References 0 publications

Phylogenetic relationships among species of the genus Oligoryzomys (Rodentia, Cricetidae) from Central and South America

Phylogenetic relationships among species of the genus Oligoryzomys (Rodentia, Cricetidae) from Central and South America

Hantaviruses in the Americas and Their Role as Emerging Pathogens

Choclo Virus Infection in the Syrian Golden Hamster

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