ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2013, Vol. 44 ›› Issue (8): 1283-1287.doi: 10.11843/j.issn.0366-6964.2013.08.016

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Comparative Analysis of the Inhibitory Effects of Lipid Associated Membrane Proteins from Four Different Strains of Mycoplasma hyopneumoniae on Porcine Alveolar Epithelial Cell Lines

NI Bo1,2, BAI Fang-fang2, WEI Yan-na2, LIU Mao-jun2, FENG Zhi-xin2,XIONG Qi-yan2, WEI Jian-zhong1, SHAO Guo-qing2*   

  1. (1. College of Animal Science, Anhui Agricultural University, Hefei 230036, China; 2. Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences/Key Laboratory of VeterinaryBiological Engineering and Technology of Ministry of Agriculture/National Center for Engineering Research of Veterinary Bio-products, Nanjing 210014, China)
  • Received:2013-03-04 Online:2013-08-23 Published:2013-08-23

Abstract:

The objective of this study was to investigate the inhibition of lipid associated membrane proteins (LAMPs) from Mycoplasma hyopneumoniae of different virulence on porcine alveolar epithelial cell lines. LAMPs were extracted from the culture of M. hyopneumoniae by Trion-X114, the suppression ratio was detected through MTT assay, and moreover the concentration of nitric oxide was measured by Griess reagent. Our results indicate that all of four kinds LAMPs can do toxic action on porcine alveolar epithelial cell lines, and the containment procedure was agreed with the virulence of M. hyopneumoniae. The inhibited effect caused by strain NJ and 168 was stronger than strain attenuate 168 and J, which the minimum IC50 (0.13 mg·mL1) belonged to strain NJ and the maximum IC50 (0.56 mg·mL1) belonged to strain J. Moreover, LAMPs also could induce NO. The inhibition on porcine alveolar epithelial cell lines induced by M. hyopneumoniae LAMPs is related with the virulence of Mycoplasma, while the inhibited effect of virulent strain is more powerful than attenuate strain.

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