Wyniki wyszukiwania - Biblioteka Nauki

1

Immunosupresja jako przyczyna chorob swin o etiologii wieloczynnikowej

100%

Truszczynski M. , Pejsak Z.

Medycyna Weterynaryjna

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2010

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tom 66

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nr 06

370-373

EN

After presenting the definition of immunosuppression the paper concentrates on the immunosuppressive properties of porcine circovirus type 2 (PCV2). Its role in the etiology of the post-weaning multisystemic wasting syndrome (PMWS) and the other porcine circovirus diseases (PCVD) is characterized, indicating that following the immunosuppressive action of PCV2 facultatively pathogenic microorganisms join the etiology of the disease syndrome which becomes multifactorial. The lymphocytopenia resulting from PCV2 infection is particularly manifest among the B lymphocytes, followed by the T lymphocytes. In vivo analyses have shown that PCV2 is most frequently associated with monocytes, macrophages and dendritic cells (DC). PCV2 infection of macrophages and DCs is the key factor determining the consequences for immune defense competence. The differences between conventional DCs (cDCs) and plasmacytoid DCs (pDCs) are mentioned. The term cDCs defines cells with antigen presenting functions and the term pDCs represents the interferon, type 1 producing cells. Examples of immunosuppressive action of other pathogens have been presented. Classical swine fever virus inhibits the interferon production in the infected DCs. In addition it causes leucopenia. These changes enablr opportunistic Pasteurella multocida and Streptococcus sp. strains to cause septicemia in the infected pigs. Immunosuppressive action of pseudorabies virus is mentioned resulting in secondary infection by other species of viruses or bacteria. Moreover, as presented in the paper, porcine reproductive and respiratory syndrome virus demonstrates immunosuppressive properties.

2

Stop cirkowirozie

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Lecznica Dużych Zwierząt. Ogólnopolski Kwartalnik dla Lekarzy Weterynarii

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2013

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tom 08

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nr 2

3

Aktualne dane na temat bezobjawowych zakażeń cirkowirusem świń typu 2

100%

Segales J.

Weterynaria w Terenie

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2014

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tom 08

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nr 1

4

Wystepowanie poodsadzeniowego wielonarzadowego zespolu wyniszczajacego w krajowej populacji swin

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Podgorska K. , Stadejek T. , Szczotka A. , Kozaczynski W. , Porowski M. , Pejsak Z.

Medycyna Weterynaryjna

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2009

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tom 65

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nr 05

330-333

EN

The aim of the study was to assess the occurrence of the postweaning wasting syndrome (PMWS) in Polish pig herds. Thirty-two herds were selected from 195 visited pig production sites based on the appearance of clinical lesions. The population of breeding herds ranged from 25 to 2000 sows and the percentage of losses varied from 2 to 20%. In each farm 3 pigs affected by wasting were autopsied and lymph nodes were collected. Sections of lymph nodes were examined for the presence of histopathological lesions and tested with in situ hybridization to detect the DNA of porcine circovirus type 2 (PCV2), an etiological agent of PMWS. The results were considered as positive when characteristic histopathological changes were detected along with an abundant amount of viral DNA. PMWS was recognized in 26 pigs (27.9%) from 16 farms (50%). In two of those farms PMWS was diagnosed as sporadic, based on the analysis of production parameters and low rate of losses. In 12 herds (37.5%) no pig had DNA of PCV2 in lymph nodes, while in the remaining 4 herds (12.5%) low amounts of DNA were detected in lymph nodes from at least one pig. PMWS was confirmed in all tested farms with breeding herds of more than 1000 sows, while none of the small farms with breeding herds of less than 100 sows were affected. In two other groups of farms counting 100-499 and 500-1000 sows the percentage of affected herds was respectively 33.3% and 57.1%. The established rate of PMWS occurrence was similar to that claimed by most other European countries. Results obtained in this study suggest that the incidence of PMWS outbreaks increases with the size of the herd. A higher number of properly selected samples markedly enhances the probability of disease detection.

5

Poodsadzeniowy, wielonarzadowy zespol wyniszczajacy - nowa choroba prosiat i warchlakow

84%

Pejsak Z.

Trzoda Chlewna

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2000

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tom 38

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nr 06

86

6

Efektywność szczepień przeciwko chorobom związanym z PCV2 w kontekście zmienności genotypowej czynnika etiologicznego

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Pejsak Z. , Truszczynski M.

Życie Weterynaryjne

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2018

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tom 93

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nr 01

7

Przypadki zaburzeń w rozrodzie w nowo utworzonym stadzie

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Lebret A. , Berton P.

Weterynaria w Terenie

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2014

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tom 08

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nr 3

8

Pierwszy przypadek poodsadzeniowego wielonarzadowego zespolu wyniszczajacego swin w Polsce

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Stadejek T. , Podgorska K. , Kolodziejczyk P. , Bogusz R. , Kozaczynski W. , Pejsak Z.

Medycyna Weterynaryjna

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2006

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tom 62

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nr 03

297-301

EN

The present study describes first clinically detected and confirmed by laboratory methods case of PMWS in Poland. The investigation was carried out in a large farrow-to-finish farm producing 40 000 fatteners per year. In the spring of 2000, growth retardation, wasting and respiratory disorders affected 20% of weaners and 30% of fatteners. Nineteen weaners and 11 fatteners with different degrees of wasting, respiratory disorders, skin paleness and hemorrhagic skin lesions (fatteners only) were necropsied. Post-mortem examination revealed the presence of inflammatory signs in lymphoid tissues, enlarged lymph nodes, non-collapsed lungs, enlarged livers, enlarged and pale kidneys with generalized cortical petechiae. Sections of lymph nodes were submitted for histopathological examination and in situ hybridization. Moreover, virus isolation in PK15 cell line was attempted. Histopathological analysis of lymph nodes revealed different degrees of lymphatic depletion and histiocitic infiltrations, giant cells and intracytoplasmic inclusion bodies. In situ hybridization with the use of a specific for PCV2 digoxigenin labelled DNA probe confirmed the abundant presence of PCV2 DNA within lesions in lymph nodes. A peroxidase assay indicated PCV2 replication in the inoculated cell line. Gross and histopathological lesions and the presence of PCV2 antigens in lymphoid tissues confirmed the presence of PMWS in a Polish swine herd. Clinical signs and laboratory examinations indicated that PDNS and PMWS coexisted in the herd. This suggests that PCV2 could be an important factor in an aetiology of PDNS.

9

Choroby świń bez granic

84%

Trela T.

Lecznica Dużych Zwierząt. Ogólnopolski Kwartalnik dla Lekarzy Weterynarii

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2007

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tom 02

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nr 2

10

Infekcje wirusowe w ksenotransplantacjach i strategie ich wykrywania

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Mazurek U. , Janikowska G. , Wydmuch Z. , Wilczok T.

Biotechnologia

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2006

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nr 1

125-132

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Wpływ szczepień loch przeciwko PCV2 na wybrane wyniki produkcyjne wielkotowarowego stada świń

84%

Kusior G. , Wierzchoslawski K.

Lecznica Dużych Zwierząt. Ogólnopolski Kwartalnik dla Lekarzy Weterynarii

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2010

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tom 05

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nr 2

12

PCV 2 - efekty szczepień

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Porowski M. , Stadejek T.

Lecznica Dużych Zwierząt. Ogólnopolski Kwartalnik dla Lekarzy Weterynarii

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2008

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tom 03

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nr 2

13

Aktualne dane na temat epidemiologii i zwalczania zakażenia cirkowirusem świń typu 2

84%

Tarasiuk K.

Magazyn Weterynaryjny

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2012

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tom 21

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nr 02

14

Profile serologiczne dla wirusa zespołu rozrodczo-oddechowego świń, cirkowirusa typu 2, Mycoplasma hyopneumoniae oraz Actinobacillus pleuropneumoniae

84%

Czyzewska E. , Dors A.

Medycyna Weterynaryjna

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2013

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tom 69

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nr 11

15

Strategie szczepień przeciwko zakażeniom cirkowirusami świń

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Janeczko K. , Rutkowska-Pejsak B. , Ploneczka-Janeczko K.

Magazyn Weterynaryjny

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2012

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tom 21

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nr 06 Choroby Świń - Monografia

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Efektywność szczepień w zwalczaniu zakażeń cirkowirusem świń

84%

Rutkowska-Pejsak B.

Trzoda Chlewna

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2008

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tom 46

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nr 05

17

Choroby związane z cirkowirusem świń - przegląd zagadnień związanych z PMWS

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Baekbo P. , Kristensen C. S. , Larsen L. E.

Magazyn Weterynaryjny

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2012

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tom 21

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nr 06 Choroby Świń - Monografia

18

Opłacalność produkcji oraz zwalczanie PRRS i cirkowirusów świń - opinia wybitnego eksperta amerykanskiego. Część 1. Notatki z XIII konferencji hyopatologicznej w Puławach

84%

Pejsak Z.

Trzoda Chlewna

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2008

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tom 46

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nr 07

19

Przyczyny ujawniania się skutków zakażenia świń PCV2

84%

Podgorska K. , Pejsak Z.

Lecznica Dużych Zwierząt. Ogólnopolski Kwartalnik dla Lekarzy Weterynarii

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2010

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tom 05

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nr 2

20

Cirkowirus typ II - co o nim wiemy?

84%

Rutkowska-Pejsak B.

Hoduj z Głową - Świnie

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2006

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nr 3