The experiment was conducted to inoculate one-day old chicks with March's disease (MD) trivalent and herpesvirus of turkey (HVT) vaccines separately, and then to challenge them with virulent MD virus (vMDV) at the...The experiment was conducted to inoculate one-day old chicks with March's disease (MD) trivalent and herpesvirus of turkey (HVT) vaccines separately, and then to challenge them with virulent MD virus (vMDV) at the age of 15 days. and 5, 25, 45 and 75 days after the challenge with vMDV, comparing with the control-challenged chicks without immunization, to detect the immunoprotetive efficacy and dynamic changes of the inductive activity of interleukin-2(IL-2), expression of IL-2 receptor and proliferative function of T cells in thymus and spleen; the number of ANAE+T, AP+T cells and IgG, IgM, IgA antibody-producing cells in Bursa Fabricius, spleen,thymus, cecal tonsil and Harder gland; as the amount of T cells and IgG, IgM, IgA in peripheral blood as well as the content of IgG, IgM and IgA in the tear, trachea washings, bile and intestinal fluids of the experimental chicks. The experimental results firstly demonstrate that the immunorcgulation of IL-2, and IL-2 receptor, the cellualr and humoral immune responses were significantly enhanced in the central and peripheral immune organs; the local mucosal immune function were markedly amplified in the respiratory and digestive tracts of the immunized-challenged,chicks, which were closely correlated with the immunoprotection against MD; the immune response and immunoprotective effect of the trivalent vaccine-immunized chicks were much better than those of HVT vaccine-immunized chicks:展开更多
The experiment was conducted to infect one-day old healthy AA chicks with virulent Marek'sdisease virus(MDV).Compared with the uninfected control chicks,it was undertaken to detect theinductive activity of interlu...The experiment was conducted to infect one-day old healthy AA chicks with virulent Marek'sdisease virus(MDV).Compared with the uninfected control chicks,it was undertaken to detect theinductive activity of interlukin-2,expression of IL-2 recepter(IL-2R)and proliferative reaction ofT cell in the thymus and spleen;to determine the number of α-naphthyl esterase positive T cells,acid phosphatase positive T cells and antibody forming cells in the thymus,Bursa Fabricius,spleen,cecal tonsil, Harder gland and mucosal lympoid tissue of bronchus;to check the number of T cell inperipheral blood as well as the dynamic changes of the amount of IgG, IgM and IgA in the serum,tear, trachea washings and intestinal secretions of infected chickens at 5,25,45 days old,respectively.The experimental results reveal that immunoregulation of IL-2 in immune organs ofinfected chickens was disordered;the cellular and humoral immune functions weresignificantly depressed in the central and peripheral immune organs;the local or mucosal immunedefense function were also markedly decreased in respiratory and digestive tracts.展开更多
文摘The experiment was conducted to inoculate one-day old chicks with March's disease (MD) trivalent and herpesvirus of turkey (HVT) vaccines separately, and then to challenge them with virulent MD virus (vMDV) at the age of 15 days. and 5, 25, 45 and 75 days after the challenge with vMDV, comparing with the control-challenged chicks without immunization, to detect the immunoprotetive efficacy and dynamic changes of the inductive activity of interleukin-2(IL-2), expression of IL-2 receptor and proliferative function of T cells in thymus and spleen; the number of ANAE+T, AP+T cells and IgG, IgM, IgA antibody-producing cells in Bursa Fabricius, spleen,thymus, cecal tonsil and Harder gland; as the amount of T cells and IgG, IgM, IgA in peripheral blood as well as the content of IgG, IgM and IgA in the tear, trachea washings, bile and intestinal fluids of the experimental chicks. The experimental results firstly demonstrate that the immunorcgulation of IL-2, and IL-2 receptor, the cellualr and humoral immune responses were significantly enhanced in the central and peripheral immune organs; the local mucosal immune function were markedly amplified in the respiratory and digestive tracts of the immunized-challenged,chicks, which were closely correlated with the immunoprotection against MD; the immune response and immunoprotective effect of the trivalent vaccine-immunized chicks were much better than those of HVT vaccine-immunized chicks:
文摘The experiment was conducted to infect one-day old healthy AA chicks with virulent Marek'sdisease virus(MDV).Compared with the uninfected control chicks,it was undertaken to detect theinductive activity of interlukin-2,expression of IL-2 recepter(IL-2R)and proliferative reaction ofT cell in the thymus and spleen;to determine the number of α-naphthyl esterase positive T cells,acid phosphatase positive T cells and antibody forming cells in the thymus,Bursa Fabricius,spleen,cecal tonsil, Harder gland and mucosal lympoid tissue of bronchus;to check the number of T cell inperipheral blood as well as the dynamic changes of the amount of IgG, IgM and IgA in the serum,tear, trachea washings and intestinal secretions of infected chickens at 5,25,45 days old,respectively.The experimental results reveal that immunoregulation of IL-2 in immune organs ofinfected chickens was disordered;the cellular and humoral immune functions weresignificantly depressed in the central and peripheral immune organs;the local or mucosal immunedefense function were also markedly decreased in respiratory and digestive tracts.
