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1

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

100%
Maj-Paluch J., Reichert M.
Medycyna Weterynaryjna
|
2018
|
tom 74
|
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.
2

Experimental infection with epizootic haematopoietic necrosis virus (EHNV) of rainbow trout (Oncorhynchus mykiss Walbaum) and European perch (Perca fluviatilis L.)

100%
Borzym E., Maj-Paluch J.
Bulletin of the Veterinary Institute in Puławy
|
2015
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tom 59
|
nr 4
The aim of this study was the determination of the susceptibility of Polish farmed redfin perch (Perca fluviatilis L.) and rainbow trout (Oncorhynchus mykiss Walbaum) to experimental infection with haematopoietic necrosis virus (EHNV). A bath challenge model was tested at two temperature ranges: 13-15°C and 20-22°C. After 7 d, the first clinical signs and mortality were observed in fish kept at these temperatures. Significantly more mortality cases were reported in the redfin perch population, reaching a maximum of 24% compared with 12% in the rainbow trout group at 20-22°C. EHNV was reisolated from redfin perch and rainbow trout tissue in cell culture and the infection was confirmed by a molecular method and histopathology during the duration of the experiment. This study revealed that fish from Polish farms can be susceptible to EHNV even at lower temperatures.
3

Charakterystyka wirusa zakaźnej martwicy trzustki ryb łososiowatych i jego identyfikacja

100%
Maj-Paluch J., Reichert M.
Medycyna Weterynaryjna
|
2016
|
tom 72
|
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.
4

First laboratory confirmation of salmonid alphavirus type 2 (SAV2) infection in Poland

71%
Borzym E., Maj-Paluch J., Stachnik M., Matras M., Reichert M.
Bulletin of the Veterinary Institute in Puławy
|
2014
|
tom 58
|
nr 3
The aim of the study was to identify the genotype of Polish isolates of salmonid alphaviruses (SAV) and to find the origin of the virus. Samples for virus isolation included the kidneys, spleen, and liver pooled from 10 fish. A typical cytopathic effect was observed after inoculation of samples on cell lines. Total RNA was extracted from cell culture supernatant and submitted to RT-PCR with primers amplifying two informative regions of the genome: a conserved region in the E2 gene and a variable region in the nsP3 gene. The sequences revealed that the strain from Poland belonged to subtype SAV 2, indicating a very strong genetic identity with isolates from Italy and France.
5

Filogenetyczna analiza wirusa wiosennej wiremii karpi SVC identyfikowanego na terenie Polski

71%
Maj-Paluch J., Borzym E., Matras M., Stachnik M., Reichert M.
Medycyna Weterynaryjna
|
2019
|
tom 75
|
nr 05
Spring viremia of carp (SVC) is a disease caused by a virus belonging to the genus Vesiculovirus, family Rhabdoviridae. The SVC virus is divided into four genogroups, Ia, Ib, Ic, and Id, due to its geographical distribution. This study aimed to identify the genotype of the SVC virus circulating in Poland. Polish SVC virus isolates were propagated on EPC and FHM cell lines, and genetic material (RNA) was isolated. The virus was detected in test samples by reverse transcription, sequenced and analyzed using MEGA 6.06 software. The phylogenetic tree was constructed by the Neighbor-Joining method. The results of phylogenetic analysis revealed the presence of two genogroups of the SVC virus in Poland. Most of Polish isolates belonged to the genogroup Id, as do isolates AY196200 from the Czech Republic, Z37505 from Belgium and EF593149 from the United States. Only two Polish isolates from Silesian Voivodeship were more closely related to Chinese and US isolates belonging to the genogroup Ia. There were no isolates belonging to the genogroups Ib and Ic. Nucleotide sequence analysis revealed certain point mutations between particular isolates. Knowledge on the genetic variants of the SVC virus circulating in Poland will be useful in epizootic investigations and preventive measures to protect Polish aquaculture from new variants from the neighboring countries.
6

Choroby wirusowe występujące u ryb ze szczególnym uwzględnieniem karpiowatych

71%
Matras M., Stachnik M., Borzym E., Maj-Paluch J., Reichert M.
Przegląd Rybacki
|
2014
|
tom 38
|
nr 2[134]
7

Potential role of different fish species as vectors of koi herpesvirus (CyHV-3) infection

71%
Matras M., Stachnik M., Borzym E., Maj-Paluch J., Reichert M.
Journal of Veterinary Research
|
2019
|
tom 63
|
nr 4
8

Najgroźniejsze wirusy ryb hodowlanych w obiektach RAS i możliwość ich zwalczania

71%
Matras M., Stachnik M., Borzym E., Maj-Paluch J., Reichert M.
Magazyn Przemysłu Rybnego
|
2018
|
nr 2
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