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양식 넙치 ( Paralichthys olivaceus ) 에서 발생한 랩도바이러스성 질병의 병리조직학적 특징
이남실(Nam Sil Lee),강형길(Hyung Gil Kang),최희정(Hee Jung Choi),전세규(Se Kyu Chun),박남규(Nam Kyu Park),허민도(Min Do Huh) 한국어병학회 2002 한국어병학회지 Vol.15 No.1
On April of 2000 and February of 2001, a disease characterized by darkening, ascites and enlargement of the spleen occurred in flounder, Paralichthys olivaceus, farmed near northern and eastern coasts of Korea. Various degree of necrosis including liquefactive-type was observed mainly in hemopoietic tissue of spleen and kindney. Certain tissue such as branchial soft tissue including epithelium showed a similar necrotic findings. But some tissues such as intentine had several necrotic clusters of wandering cells, being possibly leukocytes. Necrotic evidences of blood cells were evident in various tissues including hemopoietic tissues. Necrobiotic bodies were frequently encountered in blood smear preparations. Bullet type-virious were detected in the spleenic cells. Each virion was about 500 nm in diameter and 170nm in length. From these results, this disease was thought to be a rhabdoviral disease.
나일틸라피아의 임파조직내 대식세포 분포변화에 관한 병리조직학적 연구
이남실(Nam Sil Lee),김지영(Jee Young Kim),정현도(Hyun Do Jeong),허민도(Min Do Huh) 한국어병학회 1995 한국어병학회지 Vol.8 No.2
To elucidate the distributional pattern of macrophages within lymphomyeloid tissues according to the disease process, tilapias, teleostean fish, were intraperitoneally injected with live Edwardsiellatarda and its extracellular product(ECP) respectively. And then histopathological examination for the spleen and gead kidney were carried out for the individuals which had not any clinical signs. In the group injected with live E. tarda, macrophages were densely organized into MMC-like structures with showing some degree of recovery in histological arrangement. At the 2nd week, overall structures of the lymphomyeloid tissues became normal, accompanying the disappearance of most of macrophage groups. Also in case of ECP injection, quite similar findings were observed. Moreover, macrophage collections and hypertrophied ellipsoids were recognized at 1hour after the injection of ECP in head kidney and pleen, respectively. These results suggested that characteristic behaviors of macrophages in lymphomyeloid tissues would be used as important morphological criteria for early diagnosis of edwarsiellosis or possibly of other infectious diseases.
분자학적, 형태학적 방법을 통한 넙치(Paralichthys olivaceus) 근육에서의 Kudoa septempunctata 감염형태의 변화 관찰
이남실(Nam-Sil LEE),도정완(Jeong-Wan DO),김명석(Myoung Sug KIM),원경미(Kyoungmi WON),조미영(Miyoung CHO),정승희(Sung-Hee JUNG) 한국수산해양교육학회 2019 水産海洋敎育硏究 Vol.31 No.1
This is study about trend of infection form of Kudoa septempunctata in cultured olive flounder (Paralichthys olivaceus). We performed two times of survey (from May 2016 to February 2017 and from May 2017 to September 2017) using PCR method and microscopic method. PCR positive samples had been constantly detected during the survey period, and the prevalence season was from July to October in 2016. However, spore was not detected with microscopic method from May to July, and it had been observed from September 2016 in the 1st survey. These trends are similar in the 2nd survey. In the histopathological examination, partial necrosis of muscle bundle and clump of macrophage around vessel were major findings in muscle tissue that revealed positive result at PCR method only. Moreover, various forms of plasmodial cells were examined from ISH (in-situ hybridization) reaction against muscle tissue that had not K. septempunctata spores.
가물치에 대한 Nocardia seriolae의 인위감염과 조직학적 관찰
이남실(Nam-Sil LEE),한현자(Hyun-Ja HAN),김명석(Myoung-Sug KIM),도정완(Jeong-Wan DO),정승희(Sung-Hee JUNG),조혜인(Hyae-In CHO),김진도(Jin-Do KIM) 한국수산해양교육학회 2016 水産海洋敎育硏究 Vol.28 No.3
Snakehead, Channa argus were intraperitoneally infected with Nocardia seriolae. at the concentrations of 1.5×10<SUP>7</SUP> cfu/㎖ or 1.5×10<SUP>8</SUP> cfu/㎖. The infected fish were kept in aquaria at 25℃ and 30℃ for 3 weeks. Clinical signs and mortality were monitored daily to evaluate the virulence. All artificially infected fish showed the same clinical sign found in naturally infected fish. All the fish infected with 1.5×10<SUP>8</SUP> cfu/㎖ of N. seriolae died within 24days. N. seriolae showed higher virulence to snakehead at the temperature 30℃. Internal lesions such as whitish nodules in the infected internal organs were not correlated with mortality but some degenerative changes were observed in all the infected organs within a week. Whitish nodules in the infected organs which are the typical character in nocardial infection was initially found at two weeks after the artificial infection in snakehead.
Aeromonas veronii의 실험적 감염에 의한 양식 메기, Silurus asotus의 병리학적 변화
김진도 ( Jin Do Kim ),도정완 ( Jeong Wan Do ),최혜승 ( Hye Sung Choi ),서정수 ( Jung Soo Seo ),정승희 ( Sung Hee Jung ),조혜인 ( Hyae In Jo ),박명애 ( Myung Ae Park ),이남실 ( Nam Sil Lee ),박성우 ( Sung Woo Park ) 한국환경생물학회 2013 환경생물 : 환경생물학회지 Vol.31 No.4
Recently, a new disease showing symptoms such as epidermal exfoliation and muscular necrosis occurred in cultured Korean catfish. Although the mortality of fishes was low but the economic damages owing to loss of commercial value were severe. The authors isolated the causative agent from diseased fish and observed pathological changes both in naturally and artificially infected fish. The causative bacteria was identified as Aeromonas veronii. Subsequently we observed the daily death and pathological symptoms of artificially infected fish with Aeromonas veronii. Symptoms of artificially infected fish were similar to those of naturally infected fish and all fish died within 7 days after infection. Histopathological changes on the naturally infected fish revealed severe congestion and necrotic degeneration in the liver, spleen and kidney. Some bacterial aggregates with inflammatory degeneration were observed in the heart, and congestion and fibrosis in the lamina propria of digestive tube were predominant. In artificially infected fish, skin erosion and necrotic degeneration of muscle tissue around injected region were particularly manifested. Degeneration of hepatocytes in liver and hyalic degeneration around ellipsoids in spleen were partially observed. However, there were no predominant signs in digestive tube in artificially infected fish.
양식동남아산 뱀장어(Anguilla bicolor pacifica)의 Heterosporis anguillarum 감염
김진도 ( Jin-do Kim ),도정완 ( Jeong-wan Do ),최혜승 ( Hye-sung Choi ),조혜인 ( Hyae-in Jo ),이남실 ( Nam-sil Lee ),김영대 ( Young-dae Kim ) 한국환경생물학회 2014 환경생물 : 환경생물학회지 Vol.32 No.4
Shortfin eel (Anguilla bicolor pacifica) is a species of commercial importance and its production is greatly affected due to the infection by Heterosporis anguillarum. In this study, we evaluated the effect of H. anguillarum infection on the growth of Shortfin eel. A disease that trunk muscle of cultured shortfin eel, Anguilla bicolor pacifica, were irregular and resulted in death, breakout of the commercial eel culture farm. We observed that the trunk muscle of infected eels were irregular and represented white or yellowish externally. Histopathologically, a great numbers of large or small spores and sporophorocysts were also observed in degenerated muscle layer. The cloning of specific gene of H. anguillarum, encoding small subunit ribosomal RNA (SSU-rRNA)was amplified by the polymerase chain reaction(PCR) from the muscle lesion of diseased eel. The size of clone gene is well matched with the size of small subunit ribosomal RNA of H. anguillarum and thus confirming the infection by H. anguillarum.
In-situ hybridization 법을 사용한 양식 넙치, Paralichthys olivaceus의 바이러스 감염 질병 특성 고찰
도정완 ( Jeong Wan Do ),이남실 ( Nam Sil Lee ),정승희 ( Sung Hee Jung ),김경길 ( Kyung Kil Kim ),최혜승 ( Hye Sung Choi ),박정우 ( Jeong Woo Park ),김이청 ( Yi Cheong Kim ) 한국어병학회 2013 한국어병학회지 Vol.26 No.3
Polymerase chain reaction (PCR) is the most rapid and widely used method to detect viral pathogens. However, this method does not provide histopathologic nature of the virus. In situ hybridization (ISH) with oligonucleotide probes is attractive because it is a rapid method for detection and identification of viral pathogens at sites of tissue infection. In order to understand the histopathologic characterictics of Red sea bream iridovirus (RSIV), viral-hemorrhagic septicemia (VHS) virus and viral nervous necrosis (VNN) virus to cultured olive flounder, we her applied ISH method to various kinds of olive flounder tissues with PCR-positive for these three viruses. We found that these viruses showed different tissue tropism and were detected from different cell types. Our results suggest that ISH is useful not only in rapid detection of viral pathogens but also in understanding the histopathologic characters of specific viral pathogens.
넙치에 기생하는 쿠도아 점액포자충(Kudoa septempunctata) 의 활성 확인을 위한 염색법의 비교
도정완(Jeong-Wan DO),문선화(Sun Hwa MOON),김민지(Min Ji KIM),조미영(Mi-Young CHO),정승희(Sung Hee JUNG),이남실(Nam-Sil LEE) 한국수산해양교육학회 2016 水産海洋敎育硏究 Vol.28 No.6
Consumption of Paralichthys olivaceus in raw fish have been reported as the cause of outbreaks of food-born illness, and Kudoa septempunctata in muscle of Paralichtys olivaceus was suggested with the causative agent. For this reason, distinguish of vital and dead spore is important to study survivability of Kudoa septempunctata in human intestinal condition and in vitro inactivation of Kudoa septempunctata. In this reports, we suggest NR & MB (Neutral red and Methylene blue) staining method that is easier and simpler than the previously described HO & PI (Hoechst33342 and Propidium iodide) method according to a experimental condition.