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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.
진영화,우계형,김재훈,황의경,서일복,Jean, Young-Hwa,Woo, Gye-Hyeong,Kim, Jae-Hoon,Hwang, Eui-Kyung,Seo, Il-Bok 한국수의병리학회 1998 한국수의병리학회지 Vol.2 No.2
A five-month old female Great Dane with a history of depression and convulsion was submitted to the Pathology and Diagnosis Reference Division of National Veterinary Research and Quarantine service. The dog had ingested concentrated antifreeze and died 12 days after the sudden onset of clinical signs. Main gross lesion was limited to swollen kidneys with diffusely fine granularity on the cut surface. Principle microscopic lesions were focused on the kidneys including dilated Bowman's space, thickened glomerular basement membrane, many light yellowish crystals, and proteinaceous casts in some tubules. Some neutrophils and lymphocytes were focally infiltrated in interstitium of the cortex and medulla. Crystals were angular or quite irregular in shape and arranged in sheave or rosette form. Under polarized light, the crystals were birefringent, which is typical of calcium oxalate crystals. Crystals were more concentrated in the cortex than in the medulla. A few crystals were also observed in the small blood vessels of the brain. Based upon the history of ingestion of antifreeze and the identification of calcium oxalate crystals in the tissue sections of the kidney and brain, this case was diagnosed as ethylene glycol toxicosis in a dog.
개 capillaria hepatica 感染 例의 病理學的 觀察
Jae Hoon Kim(金哉勳),Eui Kyung Hwang(黃義卿),Young Hwa Jean(陳永華),You Chan Bae(裵幽燦),Dae Yong Kim(金大慂),Yong Dhuk Yoon(尹用德),Sang Ho Choi(崔尙鎬) 한국예방수의학회 1995 예방수의학회지 Vol.19 No.2
Five dogs were submitted for diagnosis in Pathology Division of the National Veterinary Research Institute. These dogs showed emaciation and rough hair coat. At necropsy, numerous sharply demarcated yellowish white spots or streaks were scattered in the liver parenchyma under the capsule. Histopathological findings were seen with typical granuloma in the liver parenchyma. Nematodes and their ova were surrounded by macrophages, epithelioid cells, foreign body giant cells, eosinophiles and lymphocytes, and these granulomatous nodules were encapsulated with fibrous connective tissues. The ova were lemon shaped, bipolar operculate and enveloped by the thick bilayered walls. The transparent outer wall had a radially striated appearance, whereas the inner wall was more dense and opaque. The mean dimension of ova were 53.5㎛ long by 28㎛ wide. These results were concluded that five dogs were infected with Capillaria hepatica.
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.
Porcine Circovirus Infection in Weaned Pigs with Postweaning Multisystemic Wasting Syndrome in Korea
김재훈,노인순,손현주,진영화,황의경,윤경진,Kim, Jae-hoon,Roh, In-soon,Sohn, Hyun-joo,Jean, Young-hwa,Hwang, Eui-kyung,Yoon, Kyoung-jin The Korean Society of Veterinary Science 2003 大韓獸醫學會誌 Vol.43 No.3
Eight nursery to grower pigs exhibiting weight loss and sudden death were diagnosed as postweaning multisystemic wasting syndrome (PMWS) based on the results of gross findings, histopathology, immunohistochemistry, fluorescent antibody test, virus isolation, PCR, serology, and electron microscopy. Groosly, the pigs had a rough hair coats and were severely emaciated. And moot lymph nodes were pale and enlarged. Lungs were not fully collapsed and exhibited 10 to 40% pale red cranioventral consolidation. Histopathologically, typical lymphohistiocytic interstitial to bronchointerstitial pneumonia, chronic lymphadenitis, severe lymphoid depletion, and basophilic intracytoplasmic inclusions were noted in the most lymphoid tissues. Porcine circovirus panicles were observed in the inguinal lymph node of the pigs by electron microscopy. Porcine circovirus type 2 (PCV2) antigens or viral DNAs were detected in the lesions of all pigs using immunohistochemistry or PCR. Two PCV2 were isolated from a homogenate of pooled lung and lymph node in 2 of the 5 pigs. Additionally, antigens of porcine reproductive and respiratory syndrome virus (PRRSV) and Hemophilus (H.) parasuis were also detected by immunofluorescent antibody test. Serologically, 55% of randomly selected sows and fattening pigs was serum antibody positive to PCV2 by an indirect fluorescent antibody (IFA) test and approximately 18 % of animals in the herd were serologically pooitive by the ELISA kit for PRRSV. To our knowledge, this is the first report of PMWS co-infected with PCV-2, PRRS, and H. parasuis 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.