透過您的圖書館登入
IP:3.145.63.136
  • 學位論文

利用Wolbachia spp. 之特異性引子建立犬、貓心絲蟲症( Canine and Feline heartworm disease)感染之核酸診斷技術

A study of the specific polymerase chain reaction for dirofilariasis in dogs and cats by using specific primers of Wolbachia spp.

指導教授 : 費昌勇
若您是本文的作者,可授權文章由華藝線上圖書館中協助推廣。

摘要


犬心絲蟲( Dirofilaria immitis )為一種寄生在狗、貓、狐、狼心臟及肺動脈的寄生蟲疾病。屬於 Filaroididae 科的 Dirofilaria 屬,往往造成感染動物的臨床症狀且影響其心臟功能。 目前犬心絲蟲的判定為臨床症狀、血液濕抹片中見到microfilaria的出現,加上商品化的ELISA 試劑(enzyme-linked immunosorbent assay)偵測。狗為 D.immitis 的固有宿主,可由以上方法得知心絲蟲的感染與否。在貓,大部份的貓在表皮血液中幾乎看不到幼絲蟲,但可能有具代表性的放射線學檢查結果或陽性的心絲蟲抗原 ELISA 試驗結果。 由於貓是偶然宿主, 故感染的蟲體數量很少 , 所呈現的抗原量相對也低 , 所以我們很可能會忽略貓的心絲蟲感染症 。在貓感染D.immitis 在血中見到 microfilaria 的機會很低,加上貓感染 D.immitis 只要幾隻成蟲寄生即可造成死亡。 Wolbachia spp.為一種垂直傳播的絕對細胞內寄生性立克次體,寄生在節肢動物及絲蟲體上,而它在絲蟲症上扮演著十分重要的角色。 D. immitis 蟲體上帶有 Wol. spp. ,兩者之間的關係目前仍有許多人探討。 本研究的目的在於利用聚合酶鍊鎖反應( polymerase-chain-reaction;PCR )之檢測 , 以利於日後建立犬、貓心絲蟲感染症在臨床上的診斷方法。 並於建立診斷方法後調查犬、貓感染 D. immitis 的盛行率以及探討 D. immitis 上存有Wol. spp. 的比率 。

關鍵字

心絲蟲 引子

並列摘要


Abstract The heartworm, Dirofilaria immitis, is a mosquito-borne pathogenic parasite of canids. It has also been found in other animals, such as seals, raccoons, as well as cats. The adult worms normally habitat in the right ventricle and pulmonary arteries. Cats usually tend to harbor very few and unisex adult worms and thus usually to remain amicrofilaremic. Additionally, cats usually fall victims to sudden death as a result of aberrantly migrating heatworms. Consequently, there is hardly reliable diagnostic method capable to identify the status of infection. Wolbachia is an obligate endosymbiont bacteria harbored by many arthropods and filarial worms, including D. immitis. The first description of Wol. spp. was made in 1924, when it was detected in the ovaries of the mosquito Culex pipiens and classified as an unnamed Rickettsia. All isolates of filarial parasites studied so far by PCR are infected with this bacteria. We develop nucleotide diagnostic technique of dirofilariasis in cat and dog by study the relationships between Wol. spp. and D. immitis . The purpose of the study contain: (1) Prevalance survey of cat and dog dirofilariasis. (2) Try to construct a clinical diagnostic technique of D.immitis infection in cat by PCR.

並列關鍵字

wolbachia spp. D. immitis heartworm disease

參考文獻


4.郭宗甫、楊振墉、姚正峰。台北市夏季棄犬心絲蟲感染情況及其檢測方法之比較。中華獸醫誌 21: 97-104, 1995。
5.梁碩麟、黃慧璧、黃雪松、楊姮稜、陳光陽、費昌勇。台北地區寵物犬患犬心絲蟲症之盛行率。中華獸醫誌 22: 167-174, 1996。
6.楊淑芳、賴筑玫、劉貞怡、蔡函儒、梁碩麟、楊姮稜。台北地區家貓心絲蟲之血清盛行率調查。中華獸醫誌 2: 108-112, 2005。
8.鮑海妮。隔離檢疫與臨床就診家犬之畜主對犬心絲蟲病醫療意願之比較研究。國立台灣大學獸醫學研究所碩士論文。2003。
9.Bandi C, Anderson Tim JC, Genchi C, Blaxter LM. Phylogency of Wolbachia in filarial nematodes. Proc. R. Soc. Lond. B. 265: 2407-2413.

延伸閱讀