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Rola zakażeń wirusem zakaźnej martwicy trzustki ryb łososiowatych (IPNV) w koinfekcji z innymi wirusami

100%

Maj-Paluch J., Reichert M.

Medycyna Weterynaryjna

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2018

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tom 74

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nr 04

Co-infection is an infection of more than one pathogen. In an aquatic environment, the most common occurrence is the appearance of infectious pancreatic necrosis virus (IPNV) in the presence of other viruses such as infectious hematopoietic necrosis virus (IHNV), viral hemorrhagic septicemia virus (VHSV), infectious salmon anaemia virus (ISAV), or salmonid alphavirus (SAV). In most cases, the IPN virus reduces the proliferation of other viruses in cell cultures or in the internal organs of salmonids; for example, in IHNV or ISAV co-infections. However, it also happens that there is no significant effect on the multiplication of the virus with which it coexists, e.g. IPNV-VHSV. A body’s defense mechanisms, interferon and other interferon-like factors or mutations in the genome play an important role in co-infection.

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Izolacja wirusow posocznicy krwotocznej i zakaznej martwicy trzustki ryb lososiowatych w Polsce

80%

Antychowicz J., Wejman M., Grawinski E.

Medycyna Weterynaryjna

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2000

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tom 56

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nr 04

255-258

For the first time in Poland viral examination of rainbow trout by applying cells lines (BF-2 and EPC) and ELISA tests approved in European Community Countries have shown the presence of VHS and IPN viruses existing in the country. VHS virus was isolated at 11 farms and IPN virus at 31 farms situated in northern Poland. VHS virus was isolated both in sick fish as well as in carriers and IPN virus in carriers only. The presence of VHS and IPN viruses did not appear in trout from farms in southern Poland. The experimental infection of rainbow trout demonstrated the high virulence of one of the VHS isolates. It was found that ELISA tests for VHS and IPN are very useful in detecting viruses in tissue supernatants of fish with clinical symptoms but are not as useful in detecting viruses present in cases of low titters. The results of this investigation showed that it is necessary to intensify the monitoring of the VHSV and IPNV presence in carriers and especially in fish planned to be transferred from the north to south of Poland. This should be done by using fish cell lines and immunological methods recommended in EU countries e.g. ELISA tests. The mutual co-operation of fish breeders, veterinary officers, regional fish disease laboratories and the Fish Disease Laboratory of the National Veterinary Research Institute is imperative for the effective control of fish viral diseases.

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Charakterystyka wirusa zakaźnej martwicy trzustki ryb łososiowatych i jego identyfikacja

70%

Maj-Paluch J., Reichert M.

Medycyna Weterynaryjna

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2016

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tom 72

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nr 04

The IPN virus belongs to the Birnaviridae family, Aquabirnavirus genus. It is an enveloped, two-segment, double-stranded RNA virus. Segment A comprises two open reading frames. ORF 1 encodes VP5 protein, whereas ORF 2 encodes VP2, NS and VP3 proteins. Segment B comprises one open reading frame, which encodes VP1 protein. The VP2 gene is responsible for the virulence of the virus. The Aquabirnavirus genus is divided into two serogroups: A and B. There are 9 serotypes in serogroup A, including serotypes occurring in Europe. Serogroup B consists of one serotype. The virus grows in several cell lines and often occurs in dual infections, inhibiting the replication of other viruses. Diagnosis is based on the isolation of the virus in cell lines, serological methods and, above all, techniques of molecular biology.

Ograniczanie wyników

3 Medycyna Weterynaryjna

2 Maj-Paluch J.

2 Reichert M.

1 Antychowicz J.

1 Grawinski E.

1 Wejman M.

1 2018

1 2016

1 2000

Rola zakażeń wirusem zakaźnej martwicy trzustki ryb łososiowatych (IPNV) w koinfekcji z innymi wirusami

Izolacja wirusow posocznicy krwotocznej i zakaznej martwicy trzustki ryb lososiowatych w Polsce

Charakterystyka wirusa zakaźnej martwicy trzustki ryb łososiowatych i jego identyfikacja