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題 名 | 豬實驗感染野外豬瘟病毒之組織病理變化=Histopathologic Studies on the Pig Experimentally Infected by Wild Strain of Hog Cholera Virus |
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作 者 | 李淑慧; 鍾明華; 林有良; 丁履紉; 楊喜金; | 書刊名 | 臺灣省家畜衛生試驗所研究報告 |
卷 期 | 33 1997[民86.] |
頁 次 | 頁13-28 |
分類號 | 437.657 |
關鍵詞 | 豬瘟; 實驗感染; 組織病理變化; Hog cholera; Experimentally infected; Histopathologic finding; |
語 文 | 中文(Chinese) |
中文摘要 | 以本省 1993-1994 年間,野外發生豬瘟病例分離之兩株豬瘟病毒株,分別以經口 鼻方式人工感染 48 頭 5 週齡第二代 SPF 豬,結果肉眼病變與目前本省豬瘟之野外病例類 似,皆不易發現明顯之脾梗塞及淋巴結週邊出血之病變。而組織病變以淋巴系統之血管內皮 細胞、網狀內皮細胞顯著增生及成熟淋巴球減少等病變較具特徵性;反之,非化膿性腦炎之 病變不如其他病毒性疾病明顯,有時亦不易與敗血症型沙氏桿菌症引起之非化膿性腦炎區別 之。所有攻毒豬皆可回收病毒,尤以扁桃腺、腸間淋巴及鼠蹊淋巴等組織可最早分離出病毒 ,以 PCR 技術偵測結果亦同。此兩株病毒接種家兔後皆無熱反應現象,而接種 LPC 疫苗種 毒株之家兔,則有典型之熱反應發生。綜合組織形態學、病毒分離、PCR 及家兔之熱反應結 果,可初步得知此兩株野外分離株非屬強毒株及 LPC 疫苗株。 |
英文摘要 | Secondary SPF pigs with 5 weeks of age were infected experimentally with 2 isolates of hog cholera virus (HCV) obtained from 2 outbreaks between 1993-1994 via oronasal route. Similar gross lesion to the recent cases, such as spleen infarction and peripheral hemorrhage of lymph nodes were not really seen. Histopathological changes were characterized by depletion of mature lymphocyts and proliferation of reticular endothelial cells. Nonsuppurative encephalitis was not so edvident as that caused by other viral diseases and not distinguishable from that caused by septicemia salmonellosis. HCV could be recovered from the tissues being tested of all pigs sooner or later. However, tonsil, mesenteric lymph node, and inguinal lymph node were the tragets where the virus could be isolated earlistly and consistently by cell culture and PCR technique. Diphasic febrile reaction, a typical reaction of LPC-China strain, was not observed in the rabbits infected by 94-4 and S59 strains. Based on the findings of histopahtology, virus isolation, PCR and rabbit reponse were realized that these 2 field viruses are not virulent strian or LPC-china strain. |
本系統中英文摘要資訊取自各篇刊載內容。