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Angiopoietin-like protein 2 may mediate the inflammation in murine mastitis through the activation of interleukin-6 and tumour necrosis factor-α

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Abstract

Mastitis is the inflammation of the mammary gland. Recent research has shown that Angiopoietin-like protein 2 (ANGPTL2) is a key inflammatory mediator. In the present study, we tested whether there is a correlation between increased ANGPTL2 expression and inflammation in response to Staphylococcus aureus in murine mastitis and the mechanisms involved. Thirty mice were divided into two groups: blank control group, challenged group. The entire infused mammary glands were removed to observe the changes of histopathology, myeloperoxidase (MPO) activity, production of tumour necrosis factor-α (TNF-α) and interleukin (IL)-6, and genes expression of ANGPTL2, TNF-α and IL-6. In challenged group, the structure of mammary glands was damaged and the large areas of cell fragments were observed. The MPO activity, IL-6 and TNF-α concentrations, ANGPTL2, IL-6, and TNF-α mRNA levels were significantly elevated in challenged group compared with blank control group. The present findings indicate ANGPTL2 may mediate the inflammation in murine mastitis through the activation of IL-6 and TNF-α.

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Acknowledgments

Project supported by Hunan Provincial Natural Science Foundation of China (14JJ2079).

Conflict of interest

The authors declare that they have no conflict of interest.

Author information

Correspondence to Hong-Bo Xiao.

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Wang, J., Xiao, H., Sun, Z. et al. Angiopoietin-like protein 2 may mediate the inflammation in murine mastitis through the activation of interleukin-6 and tumour necrosis factor-α. World J Microbiol Biotechnol 31, 1235–1240 (2015). https://doi.org/10.1007/s11274-015-1873-7

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Keywords

  • Angiopoietin-like protein 2
  • Murine mastitis
  • Staphylococcus aureus