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개에서 거세 후 발생한 봉합사 육아종의 병리조직학적인 연구
박천호,권영삼,이소무라 히로시,Park, Chun-Ho,Kwon, Young-Sam,Isomura, Hiroshi 대한수의학회 2002 大韓獸醫學會誌 Vol.42 No.3
Postoperative suture granuloma have rarely been reported in animals. Eight biopsy masses from testes areas of neutralized dogs were diagnosed as suture granuloma. The suture granuloma occurred at any time from several weeks to a few years after surgery and appeared to be testicular tumors by macroscopic examination. The granulomas were classified into three types based on the histopathological findings. The first type of pyogranuloma was mainly composed of neutrophils, macrophages, and suture fragments. The second type was chronic necrotizing granuloma which was well demarcated by fibrous connective tissues and was composed of a few suture fragments, macrophages and central fibrinoid necrosis. The third type of granuloma had a poorly defined margin with scarcely observed suture fragments and central necrosis in the tissue. These histopathological findings suggested that various types of suture granuloma may be caused by suture material and could even appear long after surgery.
Hong Kong H5N1 인플루엔자 바이러스의 면역부전 마우스에 대한 병리발생
박천호,Park, Chun-ho 대한수의학회 2003 大韓獸醫學會誌 Vol.43 No.2
Virulent and avirulent H5N1 viruses were inoculated intranasally to BALB/c and immunodeficient mice, and compared the pathogenesis by histology and immunohistochemistry. All of mice infected with virulent virus died by systemic infection at 6 to 7 days postinfection (PI). BALB/c mice infected with avirulent virus survived from the infection, whereas immunodeficient mice showed nervous symptoms in addition to respiratory disease and died at 13 days PI. Viral positive antigens was detected from multiple organs including central nervous system in immunodeficient mice infected with avirulent virus. These results suggest that avirulent H5N1 influenza virus can aquire the multiple tissue tropism under immunosuppresed condition and host immune system is a important factor to protect the development of disease.