• 제목/요약/키워드: JE virus

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시상 침범 없는 연수막 조영증강을 보인 일본뇌염: 증례 보고 (Leptomeningeal Enhancement without Thalamic Involvement as an Initial Manifestation of Japanese Encephalitis: A Case Report)

  • 우상화;이호준;강연아
    • 대한영상의학회지
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    • 제82권2호
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    • pp.469-474
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    • 2021
  • 일본뇌염은 동남아시아에서 일본뇌염 바이러스에 의해 발생하는 흔한 감염이며, Culex 모기에 의해 인간으로 전파된다. 일본뇌염에서의 자기공명영상은 양측의 시상 침범이 있는 것이 흔한 소견이다. 저자들은 시상 침범 없이 연수막 조영증강의 형태로 나타난 일본뇌염의 드문 증례에 대해 보고하고자 한다. 치료 후, 연수막 조영증강은 사라졌으며, 비특이적인 다발성 및 양측의 고신호강도가 추적 MRI 영상에서 새롭게 나타났다.

일본뇌염 바이러스 Nakayama-NIH주와 국내에서 분리된 일본 뇌염 바이러스주의 유전적 차이 및 항원성 차이의 조사 (Antigenic and Genetic Differences between the Prototype Nakayama-NIH Strain and Korean Strains of Japanese Encephalitis Virus)

  • 조해월;남재환;이유진;김은정;이호동;윤경식;고현철
    • 대한바이러스학회지
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    • 제26권2호
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    • pp.191-204
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    • 1996
  • The characterization of the 5 Korean isolates (K96P10, K94P05, K91P55, K87P39, and K82P01) of Japanese encephalitis virus (JEV) was compared with JE virus prototype Nakayama-NIH (NKY-NIH) using prM/M and envelope gene sequences of the JEV genome and phylogenetic analysis. The antigenic analysis of these viruses were done by the cross-hamagglutination inhibition (HI) test using polyclonal antibodies against Korean isolates and NKY-NIH. The sequence homology of the Korean isolates and NKY-NIH ranged between 87.4 % - 95.6 % at the nucleotide level and between 98.2 % - 97.2 % at the amino acid level over the E nucleotides compared. Alignment of E protein amino acid sequences revealed that residue positions E89, E129, E221, E244, E327, E366, E459, and E477 characterized the Korean strains. According to phylogenetic analysis bases on the E nucleotide, there are at least 2 genetic types of JEV existing in Korea and Korean strains were distinct from NKY-NIH. However, the cross HI test results of all the Korean isolates were serologically no different from NKY-NIH strain.

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Antiviral Activity of Ascorbic Acid Against Herpes Simplex Virus

  • Yoon, Joo-Chun;Cho, Jeong-Je;Yoo, Seung-Min;Ha, Youn-Mun
    • 대한미생물학회지
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    • 제35권1호
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    • pp.1-8
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    • 2000
  • In order to explore the potential of ascorbic acid supplementation for the prevention and treatment of herpes simplex viral diseases, plaque reduction assays were performed. Ascorbic acid as well as copper chloride/ferric chloride were added to wells containing Vero cells infected with herpes simplex virus type 1 (HSV-1), and the infectivity of HSV-1 was determined. Since copper and iron are major transition metals in human plasma, near the normal human plasma concentrations of them were used for experiments. When Cu(II) and Fe(III) were applied, there were no significant differences between virus control and Cu(II)/Fe(III)-treated groups. But, when appropriate concentrations of ascorbic acid were added to wells, meaningful differences between control and ascorbate-treated groups were found. In the presence of Cu(II)/Fe(III) at $5.8/3.7\;{\mu}M$, 72-h treatment with ascorbate at $50\;{\mu}M$ reduced HSV-1 infections to $10.77%{\pm}4.25%$ (P < 0.001) and $500\;{\mu}M$ did to $3.06%{\pm}1.62%$ (P < 0.001). Moreover, the cytotoxicities for Vero cells at those concentrations were insignificant (P > 0.05). Current recommended dietary allowance (RDA) of ascorbic acid is 60 mg/day, and the oral intake of 60 mg/day of ascorbic acid yields plasma ascorbic acid at 45 to $58\;{\mu}M$ in a healthy adult man. Therefore, the results of this study suggest that the maintenance of appropriate level (more than $50\;{\mu}M$) of ascorbic acid in human plasma by appropriate amount (more than the RDA) of ascorbic acid supplementation may be helpful for the prevention and treatment of diseases caused by HSV -1 in an adult man. In addition, this study also suggests that ascorbic acid may be useful for the prophylaxis of fatal HSV-1 infections in neonates and the prevention of HSV-1 reactivation in immunocompromised hosts.

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국내 양식 무지개송어에서 분리한 IHNV glycoprotein의 유전자 분석 (Phylogenetic analysis of infectious hematopoietic necrosis virus (IHNV) isolated from cultured rainbow trout Oncorhynchus mykiss in Korea)

  • 김형준
    • 한국어병학회지
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    • 제23권1호
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    • pp.1-8
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    • 2010
  • 무지개 송어 발안란의 이동 이력과 IHNV G gene 염기서열의 계통학적 분석에 의해 IHNV의 국내 이동에 대해서 처음으로 조사되었다. IHNV RtWanju09 분리주는 IHNV RtPy91과 RtJe00의 JRt Shizuoka lineage에 속하는 것으로 나타났으며, 강원도에서 분리된 IHNV RtPy91과 RtWanju09 사이의 G gene의 유전적 차이는 1.77%였고, 약 20년간 우리나라의 JRt Shizuoka lineage에 속하는 한국 분리주들은 최대 3.03%의 유전적 차이를 나타내 계속적으로 바이러스가 진화하는 것을 알 수 있었다. 또한 전라북도 지역에서 분리된 IHNV RtWanju09 분리주는 IHNV가 오염된 강원도 지역산 발안란이 전라북도에 전파되었을 것으로 사료된다.

Eosinophilic Gastrointestinal Disorder Presenting as Intractable Vomiting and Ascites in a Young Girl

  • Kwon, Ji Yoon;Huh, Ji Sun;Je, Bo Kyung;Hong, Kwang Dae;Lee, Jee Hyun
    • Pediatric Gastroenterology, Hepatology & Nutrition
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    • 제20권3호
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    • pp.198-203
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    • 2017
  • Eosinophilic gastrointestinal disorder (EGID) is a rare disease in children that affects the bowel wall, with eosinophilic infiltration in the absence of any other causes for eosinophilia. The etiology remains unknown, but allergies and immunological imbalance are suspected triggers. We encountered a case of serosal EGID presenting as intractable vomiting and ascites in a 9-year-old girl, after influenza virus infection. Peripheral eosinophilia was not present. The diagnosis was confirmed by biopsy of the bowel wall through laparotomy and endoscopy, and controlled by 2 courses of steroid therapy due to recurring symptoms. Influenza virus infection was assumed to play a role in the onset of EGID through a Th2 response that stimulated eosinophilic infiltration in the GI tract. We therefore report this case along with a literature review.

무지개송어 성어에 대량 폐사를 유발하는 IHNV의 분리와 특성 (Isolation and Characterization of Infectious Hematopoietic Necrosis Virus Causing High Mortality in Rainbow Trout Oncorhynchus mykiss)

  • 김기홍;김영진;정성주;정태성;오명주
    • 한국어병학회지
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    • 제16권2호
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    • pp.81-90
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    • 2003
  • High mortality with signs similar to viral haemorrhagic septicemia (VHS) such as severe haemorrhages in the skin, muscle and air bladder occurred in the farmed adult rainbow trout, Oncorhynchus mykiss, in Ku-mi and Je-chun area in Korea. The isolates were neutralized by an antiserum against IHNV but not by antisera against VHSV. Electron micrograph of an ultrathin section showed large numbers of bullet-shaped virus particles. The newly isolated rhabdovirus was composed of five structural proteins. In the western blot analysis Ihe anti-DiNV serum strongly reacted with G. N and MI protein. The cumulative mortalities of RTK infected rainbow trout (10-12cm.9-12g) with $10^{3.5}\;and\;10^{1.5}TCID_{50}/m{\ell}$ were 80% and 30%. respectiveIy_ RTJ infected fish showed 50% mortality by infection with $10^{3.5}TCID_{50}/m{\ell}$. Control group and IHNVChAb exhibited no mortality. From these results, the viruses were identified lHNV although diseased fish showed similar sign. with VHS and caused high mortality in large-sized fish.

Comparison Promoter Activity of the p10 Gene between Bombyx mori Nucleopolyhedrovirus Variants

  • Hong, Hye-Kyung;Choi, Jae-Young;Woo, Soo-Dong;Lee, Hae-Kwang;Je, Yeon-Ho
    • Journal of Microbiology and Biotechnology
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    • 제11권4호
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    • pp.585-591
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    • 2001
  • To compare the p10 promoter activity of Bombyx mori nucleopolyhedrovirus (BmNPV)K1 and K4, recombinant viruses Bm101-LacZ and Bm104-LacZ with a lacZ gene under the control of each p10 promoter were constructed. The $\beta$-galactosidase activity due to Bm101-LacZ was about 5.5- and 1.1-fold higher than that due to Bm104-LacZ and BmK1-LacZ, respectively. expressing ${\beta}$-galactosidase under the control of a polyhedrin promoter. The recombinant virus BmK1-104LacZ with the same genome structure as Bm101-LacZ, except for a p10 promoter region, produced a similar ${\beta}$-galactosidase activity to that due to Bm104-LacZ and 5.5-fold lower than that due to Bm101-LacZ. The virus yield, expression level of polyhedrin, and polyhedra productivity for each recombinant virus was almost similar. These results suggested that the difference in the expression level of ${\beta}$-galactosidase resulted from a difference in the p10 promoter regions, and that an expression vector using the p10 promoter of BmNPV-K1 could be usefully exploited in the mass production of foreign proteins with silkworm larvae by means of oral ingestion.

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