PMID- 11498245 OWN - NLM STAT- MEDLINE DCOM- 20010913 LR - 20190901 IS - 0165-2427 (Print) IS - 0165-2427 (Linking) VI - 81 IP - 1-2 DP - 2001 Aug 30 TI - Changes in peripheral blood leukocyte populations in pigs with natural postweaning multisystemic wasting syndrome (PMWS). PG - 37-44 AB - The objective of the present study was to analyze, by flow cytometry, changes in PBMC subsets in pigs having postweaning multisystemic wasting syndrome (PMWS), a new condition associated to porcine circovirus type 2 (PCV2) infection. Thirteen acutely PMWS affected pigs were selected from a farm seronegative to porcine reproductive and respiratory syndrome virus (PRRSV) and to Aujeszky's disease virus (ADV); 11 clinically healthy pigs were selected from a high health farm with no history of PMWS and free of the major swine pathogens, and used as a control group. All pigs were necropsied, and tissue samples were fixed in formalin; blood with EDTA anticoagulant was used to perform the flow cytometric analysis. PBMC were incubated with mAb against porcine CD3, CD4, CD8, CD25, CD45, IgM, SWC3, and SLA-Class II. Flow cytometric analysis showed substantial changes in leukocyte subsets in the peripheral blood of PMWS-affected pigs, which were characterized by an increase of monocytes, a reduction of T (mainly CD4(+)) and B-lymphocytes, and the presence of low-density immature granulocytes. Altogether, these changes would suggest an inability of acutely PMWS-affected pigs to mount an effective immune response. FAU - Segales, J AU - Segales J AD - Departament de Sanitat i Anatomia Animals, Centre de Recerca en Sanitat Animal, Universitat Autonoma de Barcelona, Bellaterra, 08193 Barcelona, Spain. joaquim.segales@uab.es FAU - Alonso, F AU - Alonso F FAU - Rosell, C AU - Rosell C FAU - Pastor, J AU - Pastor J FAU - Chianini, F AU - Chianini F FAU - Campos, E AU - Campos E FAU - Lopez-Fuertes, L AU - Lopez-Fuertes L FAU - Quintana, J AU - Quintana J FAU - Rodriguez-Arrioja, G AU - Rodriguez-Arrioja G FAU - Calsamiglia, M AU - Calsamiglia M FAU - Pujols, J AU - Pujols J FAU - Dominguez, J AU - Dominguez J FAU - Domingo, M AU - Domingo M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - Vet Immunol Immunopathol JT - Veterinary immunology and immunopathology JID - 8002006 RN - 0 (Immunoglobulin M) SB - IM MH - Animals MH - Circoviridae Infections/immunology/*veterinary MH - Flow Cytometry MH - Immunoglobulin M/analysis MH - *Leukocyte Count MH - Swine MH - Swine Diseases/*immunology MH - Wasting Syndrome/immunology/*veterinary MH - Weaning EDAT- 2001/08/11 10:00 MHDA- 2001/09/14 10:01 CRDT- 2001/08/11 10:00 PHST- 2001/08/11 10:00 [pubmed] PHST- 2001/09/14 10:01 [medline] PHST- 2001/08/11 10:00 [entrez] AID - S0165242701003269 [pii] AID - 10.1016/s0165-2427(01)00326-9 [doi] PST - ppublish SO - Vet Immunol Immunopathol. 2001 Aug 30;81(1-2):37-44. doi: 10.1016/s0165-2427(01)00326-9.