• Title/Summary/Keyword: Non-viral

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Case Study of SNS (Social Networks Service) Application on Fashion Corporate - Focused on Twitter - (패션기업의 SNS (Social Network Service) 활용 현황에 대한 사례연구 - Twitter를 중심으로 -)

  • Sun, Se-Young;Lee, Joo-Hyun;Jung, Ye-Jin;Lee, Seung-Hee
    • Journal of Fashion Business
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    • v.15 no.1
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    • pp.158-170
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    • 2011
  • The purpose of this study was to examine how recently fashion corporate did use SNS applications for their product promotion strategies as case studies, and to provide what kinds of SNS marketing strategies would be developed for fashion corporate. Specifically, this study was focused on Twitter among SNS applications. For this study, Internet webs, news paper, articles, and other press work were used for resources. Five fashion corporate such as Buckaroo, MLB, North Faces, Kolon, and ABC Mart were analyzed. As the results, first, fashion corporate used Twitter as the marketing tool for their product promotion. Second, they tried to make an increase the numbers of Twitter follower from their customers. Third, Twitter was used for making higher customer loyalty by fashion corporate through a variety of program such as special events, game, music, or viral marketing. However, there were still some limitations on fashion corporate's Twitter usage, compared to other non-fashion corporate. Thus, fashion corporate needs to provide more creative and unique Twitter marketing strategies. Therefore, based on these results, fashion brand merchandising marketing strategies of fashion products would be provided from this study.

Large-Scale Culture of Hepatitis A Virus in Human Diploid MRC-5 Cells and Partial Purification of the Viral Antigen for Use as a Vaccine

  • Kim, Hyun-Seok;Chung, Yong-Ju;Jeon, Yeong-Joong;Lee, Sung-Hee
    • Journal of Microbiology and Biotechnology
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    • v.9 no.4
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    • pp.386-392
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    • 1999
  • A large-scale culture of hepatitis A virus in human diploid MRC-5 cells was conducted. In a roller bottle culture, the virus was grown to a maximum titer in 3 weeks after infection. Over 95% of the cell-associated virus was excreted after culturing the infected cells in suspension media without fetal bovine serum for 3 days. The cultured virus was inactivated with formalin, concentrated by ultrafiltration, and partially purified by ultracentrifugation in a non-ionic gradient medium of Renocal. Two separate peak fractions showing high anti-HAY ELISA titer were pooled and about 40% of HAV antigen was recovered by this purification procedure. Of the partially purified vaccine, the protein pattern in SDS-PAGE and immunogenicity in mice were compared with a commercial HAV vaccine. In SDS-PAGE, the purified vaccine in this study and the commercial vaccine showed almost the same protein pattern. The seroconversion rate of the purified vaccine in mice was not different from that of the commercial vaccine. Therefore, we could prepare a good grade of HAV vaccine by a simple purification procedure although the purification itself was not completed.

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Studies on the production and characterization of monoclonal antibodies against bovine rotaviruses isolated in Korea (소 로타바이러스(국내분리주)에 대한 단크론항체 생산 및 특성에 관한 연구)

  • Ahn, Jae-moon;Cho, Sun-hee;Kang, Shien-young
    • Korean Journal of Veterinary Research
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    • v.36 no.2
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    • pp.395-403
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    • 1996
  • Monoclonal antibodies(MAbs) against field isolates of the bovine rotavirus A strain(G6), V strain(G10) and reference I-801 strain(G8) were produced and characterized. Six MAbs(4C2, 4D9, 5E1, 5E7, 5D5, 3E4) against A strain had neutralizing activity and reacted only with the G6 bovine rotaviruses determined by fluorescence focus neutralization (FFN) test. Otherwise, five neutralizing MAbs(1G2, 2G6, 5E2, 5E12, 5H7) against I-801 strain neutralized the G6 and G8 bovine rotaviruses. Five non-neutralizing MAbs(5F12, 7F12, 5E11, 2A11, 2B12) were VP6-specific and cross-reacted with all bovine and porcine rotaviruses examined by fluorescence antibody(FA) test. None of the MAbs reacted with bovie viral diarrhea virus(BVDV) and bovine coronavirus(BCV) determined by FA and FFN test.

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Prolonged Gene Expression Following Erythrocyte-Mediated Delivery of TRAIL Plasmid DNA (혈구세포 수송체로 투여된 트레일 유전자의 혈중 발현 지속 효과)

  • Byun, Hyang-Min;Kwon, Kyoung-Ae;Shin, Jee-Young;Oh, Yu-Kyoung
    • Journal of Pharmaceutical Investigation
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    • v.33 no.4
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    • pp.261-265
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    • 2003
  • Tumor necrosis facto-related apoptosis-inducing ligand (TRAIL) is a recently identified member of the tumor necrosis factor cytokine superfamily. TRAIL has been shown to induce apoptosis in a number of tumor cells whereas cells from most of normal tissues are highly resistant to TRAIL-induced apoptosis. These observations have raised considerable interest in the use of TRAIL in tumor therapy. In this study we report the biodistribution fates and serum expression pattern of plasmid DNA encoding TRAIL (pTRAIL) delivered in erythrocyte ghosts (EG). pTRAIL was loaded into EG by electroportion in a hypotonic medium The mRNA expression of pTRAIL was prolonged following delivery in EG-encapsulated forms. EG containing pTRAIL showed significant levels of mRNA expression in the blood over 9 days. The organ expression patterns of pTRAIL delivered via EG, however, did not significantly differ from those of naked pTRAIL, indicating that the expression-enhancing effect of EG containing pTRAIL was localized to the blood. These results suggest that pTRAIL-loaded EG might be of potential use in the treatment of hematological diseases such as TRAIL-sensitive leukemia.

Detection and Genetic Differentiation of Megalocytiviruses in Shellfish, via High-Resolution Melting (HRM) Analysis (HRM 분석법을 이용한 패류 내 Megalocytiviruses의 검출과 유전적 분석)

  • Kim, Kwang Il;Jin, Ji Woong;Kim, Young Chul;Jeong, Hyun Do
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.47 no.3
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    • pp.241-246
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    • 2014
  • Viruses in the genus Megalocytivirus have been subdivided into four subgroups. Among these subgroups 2 and 4, represented by the red sea bream iridovirus (RBIV) and the olive flounder iridovirus (FLIV), respectively, are non-exotic. subgroups 1 and 3, represented by the red sea bream iridovirus (RSIV) and the infectious spleen and kidney necrosis virus (ISKNV), respectively, have not been detected in Korea and are known as exotic. Shellfish are filter-feeders, and can thus filter and accumulate Megalocytivirus in their digestive glands, allowing us to track viral contamination in surrounding aquatic environment. In this study, we developed a high-resolution melting (HRM) analysis to differentiate among subgroups of Megalocytivirus accumulated in shellfish, and confirmed the convenience and efficiency of this method. More than two subgroups of Megalocytivirus were found in the digestive gland of a single shellfish. We classified all Megalocytivirus viruses from shellfish in Korea into subgroups 2 and 4, although proportions of subgroups were different among regions. Compared to nucleotide sequencing analysis, HRM analysis is a simple and rapid method for differentiating of Megalocytivirus subgroups.

Gene Delivery using a Novel Cationic Liposome with Low Toxicity (저독성의 새로운 양이온성 리포좀을 이용한 유전자의 전달)

  • Kang, Hyun-Gu;Doh, Kyung-Oh;Seu, Young-Bae
    • Microbiology and Biotechnology Letters
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    • v.34 no.4
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    • pp.329-334
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    • 2006
  • Cationic liposome has been studied as one of the most promising non-viral gene delivery systems. In this report, we describe a new synthesized cholesterolic cationic lipid (2-aminoethylcarbamate-cholesterol) and dioleylphosphatidylethanolamine (DOPE) improve the cellular uptake properties of antisense ODNs, as well as plasmid DNA with low toxicity. This formulation of cholesterolic cationic lipid termed Chol-E, efficiently transfects ODNs and plasmids into many cell types in the presense or absence of 10% serum in the medium.

Changes in Lymphocyte Subsets following Open-Heart Surgery ; A Study for Changes in Lymphocyte Subsets (개심술 환자에서의 면역기능의 변화;T lymphocyte subset의 변화에 대한 고찰)

  • 황재준
    • Journal of Chest Surgery
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    • v.25 no.11
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    • pp.1185-1191
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    • 1992
  • Cell mediated immunity is depressed following surgical procedure and the degree of immunosuppression is directly related to the magintude of the procedure, blood transfusion, and length of operation. So we would expect cardiac operations to be highly immunosuppressive, although little is konwn about their immunosuppressive effect. The nearly complete consumption of complement factors and decreased levels of IgM and IgG resulting in an impaired opsonizing capacity. Additionally, peripheral blood mononuclear cell counts including T-and B-lymphocytes and T-cell subsets are reduced. Depression of cell-mediated immunity following open-heart surgery is potentially detrimental because it could increase the susceptability of patients to viral and bacterial infection. We reviewed 20 patients after cardiac operation to search for changes in peripheral blood lymphocyte subsets. Lymphocyte subsets were measured by flow cytometer and the preoperative values of lymphocyte subsets were compared with those from the first, fourth, and seventh days after operation. After cardiac operation, total mumbers of T lymphocyte was severely depressed on the first postoperative day and returned to the preoperative level by the seventh day after operation. CD3, CD4, and CD8 lymphocytes were decreased on the first postoperative day and returned to the preoperative level by the seventh day also. There was four cases of wound infection and these patients had increased CD4 lympocyte and more decreased CD19 lymphocyte compared with the non-infected group. It is concluded from these data that cell-mediated immunity is significantly depressed for at least one week following open-heart surgery and this result was closely related to the postoperative infection.

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Preparedness of Siddha system of medicine in practitioner perspective during a pandemic outbreak with special reference to COVID-19

  • Rajalakshmi, S.;Samraj, K.;Sathiyarajeswaran, P.;Kanagavalli, K.
    • CELLMED
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    • v.10 no.4
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    • pp.29.1-29.6
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    • 2020
  • COVID-19 (Corona Virus Disease-2019) is an infectious respiratory disease caused by the most recently discovered coronavirus, SARS-CoV-2 (Severe Acute Respiratory Syndrome Corona virus-2). This new viral disease was unknown before the outbreak began in Wuhan, China, in December 2019. As of November 16th 2020, it affects about 54.3 million populations, death troll increased to 1.32 million cases in worldwide. Whereas in India 8.85 cases are infected with COVID-19, of which 1, 30, 112 cases were died. Till now there has been no specific anti-virus drug or vaccines are available for the treatment of this disease, the supportive care and non-specific treatment to the symptoms of the patient are the only options in Biomedicine, the entire world turns its attention towards alternative medicine or Traditional medicine. Siddha medicine is one of the primordial systems of medicine practiced in the southern part of India, it dealt a lot about pandemic, and its management. This review provides an insight into Pandemic in Siddha system and its management in both ancient history and modern history, National and state level Government policies related to current pandemic, World Health Organization (WHO) guidelines on usage of unproven drug during infectious disease outbreak, Preparedness of Siddha system during a pandemic outbreak Challenges and Recommendations.

Anti-HIV-1 Activity of Gelatin Hydrolysate Derived from Alaska Pollack Theragra chalcogramma Skin (명태(Theragra chalcogramma) 껍질 유래 젤라틴 가수분해물의 항 HIV-1 효능)

  • Park, Sun-Joo
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.49 no.5
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    • pp.594-599
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    • 2016
  • Infection with HIV (Human immunodeficiency virus), over time, develops into acquired immunodeficiency syndrome (AIDS). The development of non-toxic and effective anti-HIV drugs is one of the most promising strategies for the treatment of AIDS. In this study, we investigated the anti-HIV-1 activity of gelatin hydrolysates from Alaska pollack skin. Gelatin hydrolysates were prepared using four enzymes (alcalase, flavourzyme, neutrase, and pronase E). Among these, the pronase E gelatin hydrolysate was found to inhibit HIV-1 infection in the human T cell-line MT4. It exhibited inhibitory activity on HIV-1IIIB-induced cell lysis, reverse transcriptase activity, and viral p24 production at noncytotoxic concentrations. Moreover, it decreased the activation of matrix metalloproteinase-2 (MMP-2) in vitro. Because HIV infection-induced activation of MMP-2 can accelerate collagen resolution and collapse of the immune system, pronase E gelatin hydrolysate might prevent the activation of MMP-2 in cells, resulting in collagen stabilization and immune cell homeostasis consistent with anti-HIV activation. These results suggest that pronase E gelatin hydrolysate could potentially be incorporated into a novel therapeutic agent for HIV/AIDS patients.

RT-PCR Detection of Three Non-reported Fruit Tree Viruses Useful for Quarantine Purpose in Korea

  • Park, Mi-Ri;Kim, Kook-Hyung
    • The Plant Pathology Journal
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    • v.20 no.2
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    • pp.147-154
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    • 2004
  • A simple and reliable procedure for RT-PCR detection of Apple stem pitting virus (ASPV), Cherry rasp leaf virus (CRLV), and Cherry necrotic rusty mottle virus (CNRMV) was developed. Two virus specific primer sets for each virus were found to specifically detect each virus among fourteen sets of designed oligonucleotide primers. Total RNAs extracted from healthy and from ASPV-,CRLV- and CNRMV-infected plant tissues were used to synthesize cDNA using oligo dT primer and then amplified by virus-specific primers for each virus. Each primer specifically amplified DNA fragments of 578 bp and 306 bp products for ASPV (prAS CP-C and prAS CP-N primers, respectively); 697 bp and 429 bp products for CRLV (prCR4 and prCR5-JQ3D3 primers, respectively); and 370 bp and 257 bp products for CNRMV (prCN4 and prCN6-NEG 1 primers, respec-tively) by RT-PCR. DNA sequencing of amplified DNA fragments confirmed the nature of each amplified DNA. Altogether, these results suggest that these virus specific primer sets can specifically amplify viral sequences in infected tissues and thus indicate that they can be used for specific detection of each virus.