PMID- 15507314 OWN - NLM STAT- MEDLINE DCOM- 20041229 LR - 20081121 IS - 0165-2427 (Print) IS - 0165-2427 (Linking) VI - 102 IP - 3 DP - 2004 Dec 8 TI - Beta-glucan enhancement of T cell IFNgamma response in swine. PG - 315-20 AB - Beta-glucan has been shown to enhance anti-tumor and anti-infection functions in animals. Pigs at 4 months of age were infected with porcine reproductive and respiratory syndrome virus (PRRSV), and peripheral blood monocytes (PBMC) were isolated for the detection of interferon gamma (IFNgamma)-producing cells. We found that soluble high molecular weight beta-glucan could increase IFNgamma-producing cell frequency in a dose-dependent manner in the enzyme-linked immunospot assay (ELISPOT) in the absence of antigenic restimulation. A concentration as low as 1.6 microg/ml gave a significant increase and a similarly high enhancement was achieved at concentrations from 3.2 to 100 microg/ml. In PRRSV-specific IFNgamma ELISPOT, soluble beta-glucan elicited increased PRRSV-specific responses at concentrations from 3.2 to 50 microg/ml, but not at 100 microg/ml, whereas insoluble beta-glucan had no effect. Soluble beta-glucan augmented the porcine cellular immune response in an antigen-independent fashion, whereas insoluble beta-glucan had no activity. This finding suggests that soluble beta-glucan may enhance innate antiviral immunity against PRRSV. FAU - Xiao, Zhengguo AU - Xiao Z AD - Department of Veterinary and Biomedical Sciences, University of Minnesota, 1971 Commonwealth Avenue, St. Paul, MN 55108, USA. FAU - Trincado, Carlos A AU - Trincado CA FAU - Murtaugh, Michael P AU - Murtaugh MP LA - eng PT - Clinical Trial PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - Vet Immunol Immunopathol JT - Veterinary immunology and immunopathology JID - 8002006 RN - 0 (Immunologic Factors) RN - 0 (beta-Glucans) RN - 82115-62-6 (Interferon-gamma) SB - IM MH - Animals MH - Female MH - Immunologic Factors/*pharmacology MH - Interferon-gamma/*biosynthesis MH - Porcine Reproductive and Respiratory Syndrome/immunology MH - Porcine respiratory and reproductive syndrome virus/*immunology MH - Swine/*immunology MH - T-Lymphocytes/*immunology MH - beta-Glucans/*pharmacology EDAT- 2004/10/28 09:00 MHDA- 2004/12/30 09:00 CRDT- 2004/10/28 09:00 PHST- 2004/10/28 09:00 [pubmed] PHST- 2004/12/30 09:00 [medline] PHST- 2004/10/28 09:00 [entrez] AID - S0165-2427(04)00264-8 [pii] AID - 10.1016/j.vetimm.2004.09.013 [doi] PST - ppublish SO - Vet Immunol Immunopathol. 2004 Dec 8;102(3):315-20. doi: 10.1016/j.vetimm.2004.09.013.