Journal of Capital Medical University ›› 2015, Vol. 36 ›› Issue (3): 437-440.doi: 10.3969/j.issn.1006-7795.2015.03.019

Previous Articles     Next Articles

Pathological analysis of liver in fatal influenza A (H1N1) virus infected cases

Wang Jue1, Dai Jie1, Wang Daye1, Lyu Fudong2, Hu Zijing1, Jin Ronghua2, Qi Jing1, Duan Xuejing1   

  1. 1. Department of Pathology, School of Basic medical Sciences, Capital Medical University, Beijing 100069, China;
    2. Department of Pathology, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
  • Received:2014-09-15 Published:2015-06-15
  • Supported by:

    This study was supported by Capital Medical Science Development Foundation of China (2009-2091).

Abstract:

Objective In this study, we observed the pathological characteristics of liver after influenza A (H1N1) virus infection, studied the expression of hemagglutinin (HA),nucleoprotein (NP),CD68 as well as the transforming growth factor β1 (TGF-β1) in the livers in the death cases, trying to discover the potential pathogenesis of the fatal H1N1. Methods Eight cases of fatal human influenza A (H1N1) infection, including 2 autopsy and 6 paramortem needle puncture biopsies were enrolled into the study. Histologic examination, special stain and immunohistochemical assays were carried out. Results In the hepatic cells band-like necrosis appeared. Micro-bubbled fatty change was observed in the hepatic cells of the pregnant women. Immunohistochemical study demonstrated the presence of nuclear protein(NP) and hemagglutinin (HA) virus antigens in macrophages. CD68 was positively expressed in hepatic kuffer' cells. TGF-β was positively expressed in macrophages and the expression rate was significantly higher than that of controls in zone of necrosis. Conclusion The study indicated that the pathological changes of influenza A (H1N1) virus infected patients were not limited to the respiratory tract, the liver was another target. Its mechanism might be related to the role of CD68 and TGF-β in the course of the disease.

Key words: influenza A (H1N1), liver, pathological characteristics, CD68, transforming growth factor β1(TGF-β1)

CLC Number: