Zearalenone induces apoptosis and inhibits proliferation in porcine ileal Peyer’s patch lymphocytes

• Autorzy: Obremski K. , Poniatowska-Broniek G.
• Języki publikacji: EN

Abstrakty

EN

Zearalenone (ZEN) is one of the most active natural estrogenic compounds that induces apoptosis. This study has been prompted by the widespread occurrence of ZEN in food and feed and limited knowledge about the effects of exposure to low doses of ZEN on the immune system. The aim of the study was to verify the hypothesis that low doses of ZEN contribute to induction of apoptosis and inhibition of proliferation in lymphocytes of the germinal centers (GC) of ileal Peyer's patches (IPP) in pigs. The experiment was performed on 30 female Polish Large White pigs, aged 2 months, with body weight of 15-18 kg, divided into two groups: control (C, n=15) and experimental (Z, n=15). On days 14, 28 and 42 of exposure to ZEN (100 |ig kg-1 feed day-1), apoptosis in IPP GC was evaluated histologically in HE-stained specimens, immunohistochemically by active caspase-3 staining and in mononucleosome and oligonucleosome detection-based ELISA. Proliferation was evaluated his-tologically by mitosis detection in HE-stained specimens, immunohistochemically by PCNA staining and in the MTT tetrazolium salt colorimetric assay detecting mitogenic responses of B cells to LPS. Exposure to low doses of ZEN for several weeks intensified apoptosis and weakened proliferation in IPP lymphocytes. ZEN influences gut-associated lymphoid tissue (GALT) by decreasing the expression of CD21+ on B cells and by increasing the percentage of B1 cell populations.

• Wydawca: -
• Czasopismo: Polish Journal of Veterinary Sciences
• Rocznik: 2015
• Tom: 18
• Numer: 1
• Opis fizyczny: p.153-161,ref.

Twórcy

autor

Obremski K.

• Department of Veterinary Prevention and Feed Hygiene, Faculty of Veterinary Medicine, University of Warmia and Mazury in Olsztyn, Oczapowskiego 13, 10-718 Olsztyn, Poland

autor

Poniatowska-Broniek G.

• Department of Pathomorphology, Faculty of Medical Sciences, University of Warmia and Mazury in Olsztyn, Warszawska 30, 10-082 Olsztyn, Poland

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Identyfikatory

DOI

10.1515/pjvs-2015-0020