title: Immune modulation effect of porcine placenta extracts in weaned the pig.
abstract: In a previous study, we established a collection of appropriate porcine placental extracts using PBS at 80°C (PE-PBS80) as a food supplement to increase immune activities in a mice model. In this study, piglets were treated with 0.1%, 0.3%, and 0.5% PE-PBS80 for 3 wk after weaning. Experiments were performed at 2 separate farms using 2 different pig varieties. Composition of white blood cells, lymphocyte activation, and cytokine concentrations were analyzed to assess the immune modulation effect. In Exp. 1, the number of white blood cells increased significantly in the PE-PBS80 treatment and T- and B-cell activation increased as well (P < 0.01). Interestingly, piglets in all treatments in Exp. 2 were naturally infected by a rotavirus at the third day of the experiment but recovered after d 10. Increased lymphocyte activation was observed in the PE-PBS80 treatment (P < 0.01) regardless of viral infection. Additionally, unlike in Exp. 1, the percentage of granulocytes and concentrations of interferon-γ, IL-1β, and IgG increased in the PE-PBS80 treatment (P < 0.01) and were more active in the 0.3% PE-PBS80 treatment compared with the control and the other treatment. In conclusion, 0.3% PE-PBS80 treatment modulated immune activities in antigen-infected piglets. Therefore, the PE-PBS80 pig placental extract, particularly the 0.3% supplement to the normal diet, could be useful as an alternative feed supplement to modulate immune activity during the early piglet period.
authors: Department of Animal and Food Bioscience, College of Natural Science, Konkuk University, Chung-ju 380-701, Korea. lovelyhusband@kku.ac.kr
authors: K H
authors: KH
authors: Lee
authors: Hyun Jung
authors: HJ
authors: Park
authors: H G
authors: HG
authors: Seo
authors: J H
authors: JH
authors: Kim
authors: G S
authors: GS
authors: Lim
authors: W Y
authors: WY
authors: Lee
authors: N H
authors: NH
authors: Kim
authors: J H
authors: JH
authors: Kim
authors: J H
authors: JH
authors: Lee
authors: H S
authors: HS
authors: Jung
authors: S H
authors: SH
authors: Sung
authors: H
authors: H
authors: Song
mesh_terms: D000821:Animal Feed / Q000032:analysis; D000818:Animals; D016207:Cytokines / Q000378:metabolism*; D019587:Dietary Supplements / Q000032:analysis; D004305:Dose-Response Relationship, Drug; D056747:Immunomodulation; D007962:Leukocytes / Q000378:metabolism*; D008213:Lymphocyte Activation / Q000187:drug effects*; D010924:Placental Extracts / Q000276:immunology*; D056910:Republic of Korea; D013552:Swine / Q000235:genetics / Q000254:growth & development / Q000276:immunology*; D014886:Weaning
chemical_list: D016207:Cytokines; D010924:Placental Extracts