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Molekularbiologische Diagnostik von Parapockenerkrankungen


Töndury, B; Kühne, A; Kutzner, H; Palmedo, G; Lautenschlager, S; Borelli, S (2010). Molekularbiologische Diagnostik von Parapockenerkrankungen. JDDG - Journal der Deutschen Dermatologischen Gesellschaft, 8(9):681-685.

Abstract

BACKGROUND: The diagnosis of parapox virus infections relies primarily on a history of contact with infected animals. The clinical presentation is usually a non-specific necrotic ulcer. The histology may also be non-specific, especially with older lesions. Negative-staining electron microscopy (EM) is a fast and reliable diagnostic tool, but is not widely available. Serological tests and the time-consuming viral culture are also rarely used in Europe.

PATIENTS AND METHODS: The diagnostic procedure in two patients with ecthyma contagiosum and milker's nodule using polymerase chain reaction specific for orthopox, parapox and Orf virus is explained. Diagnostics included bacterial culture, viral culture, histology and EM. In addition to these, a polymerase chain reaction (PCR) was performed in both cases.

RESULTS: The patient with ecthyma contagiosum was negative for ortho-, parapox-, and orf-virus on PCR, whereas the patient with milker's nodule had a PCR positive for parapoxvirus.

CONCLUSIONS: PCR is a simple, fast, and standardized method of diagnosis that can distinguish between the subgroups of parapoxviruses. A diagnosis can be made even in cases of ambiguous history or unspecific clinical presentation. The method is limited by the necessity to sample native material or to use neutrally buffered formalin in case of PCR from paraffin material.

Abstract

BACKGROUND: The diagnosis of parapox virus infections relies primarily on a history of contact with infected animals. The clinical presentation is usually a non-specific necrotic ulcer. The histology may also be non-specific, especially with older lesions. Negative-staining electron microscopy (EM) is a fast and reliable diagnostic tool, but is not widely available. Serological tests and the time-consuming viral culture are also rarely used in Europe.

PATIENTS AND METHODS: The diagnostic procedure in two patients with ecthyma contagiosum and milker's nodule using polymerase chain reaction specific for orthopox, parapox and Orf virus is explained. Diagnostics included bacterial culture, viral culture, histology and EM. In addition to these, a polymerase chain reaction (PCR) was performed in both cases.

RESULTS: The patient with ecthyma contagiosum was negative for ortho-, parapox-, and orf-virus on PCR, whereas the patient with milker's nodule had a PCR positive for parapoxvirus.

CONCLUSIONS: PCR is a simple, fast, and standardized method of diagnosis that can distinguish between the subgroups of parapoxviruses. A diagnosis can be made even in cases of ambiguous history or unspecific clinical presentation. The method is limited by the necessity to sample native material or to use neutrally buffered formalin in case of PCR from paraffin material.

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Additional indexing

Other titles:Molecular diagnostics of parapox virus infections
Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Dermatology Clinic
Dewey Decimal Classification:610 Medicine & health
Language:German
Date:2010
Deposited On:07 Jan 2011 12:57
Last Modified:05 Apr 2016 14:33
Publisher:Wiley-Blackwell
ISSN:1610-0379
Publisher DOI:https://doi.org/10.1111/j.1610-0387.2010.07454.x
PubMed ID:20497283

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