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한우송아지의 BVD바이러스 감염과 Aspergillus fumigatus의 복합감염
진영화,김재훈,김대용,정순욱,문운경,조두연,Jean, Young Hwa,Kim, Jae Hoon,Kim, Dae Yong,Jeong, Soon Wuk,Moon, Oun Kyong,Cho, Doo Youn 대한수의학회 2005 大韓獸醫學會誌 Vol.45 No.1
Systemic aspergillosis were outbroken of 17 Korean native calves at livestock farm in Kyunggi province. Two 3 months old calves were died after having diarrhea, coughing, dyspnea, nasal discharge, and abdominal breathing. These calves were diagnosed of aspergillosis as multifocal to coalescing pyogranulomatous inflammation with intralesional aspergillus infiltration at liver, kidney, spleen, heart, lymph nodes, lungs, intestine and cerebrum. Aspergillus fumigatus was cultured from the affected tissues. And the small intestine was positive against bovine viral diarrhea (BVD) virus on FA test. We considered that the secondary fungal infections killed the calves after BVD virus infection primarily.
면역조직화학염색 및 전자현미경검사를 이용한 소 유두로부터 소유두종바이러스 검출
배유찬,윤순식,박중원,이청산,진영화,강문일,Bae, You-Chan,Yoon, Soon-Seek,Park, Jung-Won,Lee, Cheong-San,Jean, Yong-Hwa,Kang, Mun-Il 대한수의학회 2005 大韓獸醫學會誌 Vol.45 No.2
We examined the teats of slaughtered cattles to investigate the prevalence of papilloma and to detect bovine papilloma virus (BPV) from those samples. Among 880 heads, 432 (49.0%) was Holstein and 448 (51.0%) was Korean native cattle. Grossly, out of 432 heads (Holstein), 263 (60.8%) had papilloma lesions on teats. However, out of 448 heads (Korean native cattle), only 33 (7.4%) had papilloma lesions on teats. Immunohistochemically, BPV antigen was detected in 35 heads (22.9%) of 153 (Holstein) which had papilloma lesions. But, in Korean native cattle, BPV antigen was detected in 1 head (3.8%) of 26. Electronmicroscopically, in Holstein papilloma cases, BPV particles was detected in 31 heads (39.2%) of 79. This study revealed that papilloma was very prevalent in holstein teats, Korea and the prevalence of papilloma in Holstein was 8 times higher than that of Korean native cattle. Moreover, it was needed to consider gross and histopathological lesions to confirm BPV infection on teats because the sensitivity of immunohistochemistry and electronmicroscopy was not high.
간접형광항체법을 이용한 국내 젖소의 Neospora caninum에 대한 혈청역학적 연구
허권,김재훈,황우석,황의경,진영화,이병천,배지선,강영배,야마네 이츠로,김대용,Hur, Kwon,Kim, Jae-hoon,Hwang, Woo-suk,Hwang, Eui-kyung,Jean, Young-hwa,Lee, Byung-chun,Bae, Ji-seon,Kang, Yung-bai,Yamane, Itsuro,Kim, Dae-yong 대한수의학회 1998 大韓獸醫學會誌 Vol.38 No.4
This study was carried out to investigate the prevalence of Neopsora (N) caninum infection in Korean dairy herds. To determine the prevalence of antibodies to N caninum in Korean dairy cattle, a total of 1,688 sera including 895 sera taken from 30 herds having recent high abortion rate and 793 sera selected randomly from 168 herds with no history of recent abortion problem, respectively, collected nationwide during a designated period were analyzed by indirect fluorescent antibody (IFA) test. Mean nationwide seropositive rate of the sera tested in herds and individual cattle tested were 53.5% and 35.6%, respectively. However mean seropositive rate of the samples from herds having abortion problem was approximately two and half times higher than those in herds with no recent abortion history. Regional seropositive rates of the samples from the herds with abortion problem were 48.6%, 51.6%, 44.4% and 71.4% at Kyunggi, Kangwon, Kyungbuk and Jeonnam province, respetively. Regional seropositive rates of the samples from the herds with no recent abortion problem were 35.6%, 18.3%, 16.5%, 37.5%, 19.4%, 33.3%, 32.1%, 3.8% and 0.0% at Kyunggi, Kangwon, Chungbuk, Chungnam, Kyungbuk, Kyungnam, Jeonbuk, Jeonnam and Jeju province, respectively. The results of this study suggested that N caninum infection was widespread and considerably associated with bovine abortion in Korea.
김재훈,황의경,손현주,진영화,윤순식,김대용,Kim, Jae-hoon,Hwang, Eui-kyung,Sohn, Hyun-joo,Jean, Young-hwa,Yoon, Soon-seek,Kim, Dae-yong 대한수의학회 1998 大韓獸醫學會誌 Vol.38 No.4
A case of repeated bovine abortion caused by Neospora caninum is described. The 3-year-old Holstein cow, which was seropositive to N caninum antibody by indirect immunofluoresent assay, aborted consecutively within a 10-month period. Two fetuses of 6- or 5-month of gestation were aborted in June 1996 and March 1997, respectively. Histologically, multifocal necrotizing encephalitis, nonsuppurative periportal hepatitis, myocarditis, and myositis were observed in both fetuses. Tachyzoites or tissue cysts detected in the brain, heart and liver were positive to N caninum but negative to Toxoplasma gondii by immunohistochemical method. The results of our study demonstrate that repeated abortion due to N caninum actually occurs in Korea. This is believed to the first report of repeated abortion associated with N caninum in Korea.
김대용,황우석,김재훈,허권,황의경,이병천,진영화,이재진,최상호,Kim, Dae-yong,Hwang, Woo-suk,Kim, Jae-hoon,Hur, Kwon,Hwang, Ui-Gyeong,Lee, Byeong-chun,Jean, Young-hwa,Rhee, Jae-chin,Choi, Sang-ho 대한수의학회 1997 大韓獸醫學會誌 Vol.37 No.3
A case of neosporosis is described in a 6-month-old aborted bovine fetus. Grossly, numerous, well-demarcated, 2-3mm, yellowish white foci were scattered in the heart and skeletal muscle. Histopathologic changes were confined to the brain, heart, and skeletal muscle. Multifocal areas of necrotizing encephalitis were observed in the cerebrum as well as cerebellum. Severe multifocal to coalescing nonsuppurative inflammation was observed in the myocardium and skeletal muscle. The tachyzoites of Neospora caninum were demonstrated in the brain, myocardium and skeletal muscle with immunohistochemical method using Neospora caninum-specific antibody. Based on the histopathology and immunohistochemistry, this case was diagnosed as neosporosis in aborted Korean cattle. This is believed to be the first reported case of bovine neosporosis in Korea.
부루세라백신(BR51)의 안전성에 관한 연구 II. 부루세라 RB51 백신균주의 마우스 및 기니픽에 대한 안전성
김종만,우승룡,이지연,김선영,권창희,진영화,윤용덕,조상래,Kim, Jong-man,Woo, Sung-ryong,Lee, Ji-youn,Kim, Sun-young,Kweon, Chang-hee,Jean, Young-hwa,Yoon, Yong-dhuk,Cho, Sang-nae 대한수의학회 2000 大韓獸醫學會誌 Vol.40 No.3
The pathogenicity of Br abortus RB51 strains, producted by commercial vaccine companies in Republic of Korea and USA, were evaluated in mouse and guinea pig. BALB/c and ICR mice were intraperitoneally inoculated with RB51 vaccines or virulent field strain and the existence of RB51 including its ratio of spleen to weights and persistence in spleens were examined. Groups of guinea pigs on day 55-58 of received subcutaneously with various RB51 vaccines, RB51 field isolates (Daehungjin) or virulent field isolates(Sangju) to compare the histopathogenicity in uterus. All the mice received RB51 vaccines or RB51 field isolates survived for 10 days, but the groups of mice received virulent field isolates died 5 from 11 (45.5%) in case of BALB/c mice and 12 from 12 (100%) in ICR mice, respectively. The number of RB51 in the groups of mice given with vaccine strains and RB51 field isolates were declined rapidly were in spleens between 12 and 20 days after inoculation. In contrast the mice given with the virulent field isolates rose in number of bacteria up to 20 days after inoculation. In the groups of mice infected with virulent field isolates, the ratio of spleen weights to body weight were significantly higher than those in control or in the groups inoculated with RB51 strain, including RB51 field isolates, at 12 and 20 days after inoculation. At ten days after inoculation, placentas of both the pregnant and non-pregnant guinea pigs were conducted for histopathological examination. Although any abnormal lesions were not observed in non-pregnant guinea pigs, all the strains caused the inflammation of the placenta, implying pathogenecity of RB51 in pregnant guinea pigs.
배유찬,김하영,김희진,윤순식,박중원,진영화,조경오,강문일,Bae, You-Chan,Kim, Ha-Young,Kim, Heui-Jin,Yoon, Soon-Seek,Park, Jung-Won,Jean, Yong-Hwa,Cho, Kyoung-Oh,Kang, Mun-Il 대한수의학회 2006 大韓獸醫學會誌 Vol.46 No.3
A 2-years-old female domesticated mouflon with a clinical history of chronic diarrhea and emaciation was submitted to NVRQS. Grossly, there were severe thickening of small intestine wall and enlargement of mesenteric lymph nodes. Microscopically, severe granulomatous inflammation was found in small and large intestine, mesenteric lymph nodes, spleen and liver. By Ziehl-Neelsen stain, innumerable acid-fast rod bacteria were found in the cytoplasm of epitheloid and Langhans type giant cells present in these organs. By PCR assay with primer pair specific for Mycobacterium avium subspecies paratuberculosis(IS 900) with small intestine sample, strong positive reaction was detected, although the organism was not isolated from this organ. Based on the results of histopathology and PCR, we concluded that the case was a typical paratuberculosis in mouflon. As far as we know, this is the first case report of paratuberculosis in mouflon Korea.