Comparison of Cell-Mediated Immunity Induced by Three Commercial Single-Dose Mycoplasma hyopneumoniae Bacterins in Pigs

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  • SEO Hwi Won
    Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul, Republic of Korea
  • HAN Kiwon
    Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul, Republic of Korea
  • OH Yeonsu
    Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul, Republic of Korea
  • PARK Changhoon
    Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul, Republic of Korea
  • CHOO Eun Jeong
    College of Oriental Medicine, Kyunghee University, 1 Hoegi-dong, Dongdaemun-ku, Seoul 130–701, Republic of Korea
  • KIM Sung-Hoon
    College of Oriental Medicine, Kyunghee University, 1 Hoegi-dong, Dongdaemun-ku, Seoul 130–701, Republic of Korea
  • LEE Bog-Hieu
    Department of Food and Nutrition, Chung-Ang University, 72–1 Nae-Ri, Daedeok-Myeon, Gyeonggi-Do 456–756, Republic of Korea
  • CHAE Chanhee
    Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul, Republic of Korea

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  • Comparison of Cell-Mediated Immunity Induced by Three Commercial Single-Dose <i>Mycoplasma hyopneumoniae</i> Bacterins in Pigs

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This study was to compare the degree of cell-mediated immunity induced by three commercial Mycoplasma hyopneumoniae bacterins using interferon-γ (IFN-γ) measurements, lymphocyte stimulation assays and delayed-type hypersensitivity tests. Serum IFN-γ levels were significantly elevated in all four vaccinated pig groups at 21 days post-vaccination (P<0.05). Lymphocytes isolated 21 days post-vaccination exhibited significantly more proliferation in response to M. hyopneumoniae than lymphocytes isolated 0 day pre-vaccination (P<0.05). Following intradermal injection of M. hyopneumoniae antigen at 14, 21 or 28 days post-vaccination, all pigs in the four vaccinated groups displayed skin reactions characterized by circumscribed, often erythematous nodules. Taken together, these demonstrate that all three commercial single-dose M. hyopneumoniae bacterins used in this study induce varying degrees of cell-mediated immunity.

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