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종합 건강진단을 실시한 정상성인에서의 혈청지질 분포에 관한 연구
박일환,유선미,정유석 단국대학교 1997 論文集 Vol.31 No.-
Background: Hypercholesterolemia and dyslipidemia are regarded as the risk factors of atherosclerosis of the coronary arteries. The purpose of this study is to measure the serum lipid levels of the normal persons and to calculate the cut-off values of serum lipid levels to predict the occurence of coronary events. Methods: We investigated the serum lipid profiles of the normal adults who had visited the health promotion center of Dankook University Hospital. The mean values of serum lipids were evaluated according to the groups of age, we calculated the percentile values of serum total choleterol. Results: In normal adult persons, the means of total cholesterol increased according to age. The cut-off values of serum total cholesterol for the risk of atherosclerotic coronary events were 189 ㎎/dl for the moderate risk group(75∼90 percentile of normal persons) and 225 ㎎/dl for the high risk group(over 90 percentile of normal persons). Conclusions: This study shows that the mean and the cut-off values of serum lipid in the persons who are not obese and have normal blood pressure are significantly lower than those values of normal Korean adult persons.
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Severe Fever with Thrombocytopenia Syndrome Virus, South Korea, 2013
Park, Sun-Whan,Han, Myung-Guk,Yun, Seok-Min,Park, Chan,Lee, Won-Ja,Ryou, Jungsang U.S. Department of Health and Human Services * Cen 2014 Emerging Infectious Diseases Vol.20 No.11
<P>During 2013, severe fever with thrombocytopenia syndrome was diagnosed in 35 persons in South Korea. Environmental temperature probably affected the monthly and regional distribution of case-patients within the country. Phylogenetic analysis indicated that the isolates from Korea were closely related to isolates from China and Japan.</P>
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Hantaan virus nucleocapsid protein stimulates MDM2-dependent p53 degradation
Park, Sun-Whan,Han, Myung-Guk,Park, Chan,Ju, Young Ran,Ahn, Byung-Yoon,Ryou, Jungsang Society for General Microbiology 2013 The Journal of general virology Vol.94 No.11
<P>Apoptosis has been shown to be induced and downregulated by the Hantaan virus (HTNV) nucleocapsid (N) protein. To address these conflicting data, expression of the p53 protein, one of the key molecules involved in apoptosis, was assessed in the presence of the N protein in A549 and HeLa cells. The amount of p53, increased by drug treatment, was reduced when cells were infected with HTNV or transfected with an expression vector of the HTNV N protein. When cells were treated with a proteasome inhibitor (MG132) or an MDM2 antagonist (Nutlin-3), <I>p53</I> expression was not reduced in N protein-overexpressed cells. We concluded that the HTNV N protein ubiquitinates and degrades p53 MDM2-dependently. Here we report downregulation of p53 expression through a post-translational mechanism: MDM2-dependent ubiquitination and degradation by the HTNV N protein. These results indicate that N protein-dependent p53 degradation through the ubiquitin proteasome system is one of the anti-apoptotic mechanisms employed by HTNV.</P>
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Park, Sun Young,Jin, Mei Ling,Kang, Nam Jun,Park, Geuntae,Choi, Young-Whan Elsevier/North-Holland 2017 Neuroscience letters Vol.651 No.-
<P><B>Abstract</B></P> <P>The incorporation of <I>Polygonum multiflorum</I> into the diet can result in anti-aging effects owing to its wide range of biological and pharmaceutical properties. We investigated the anti-neuroinflammatory properties of CRPE56IGIH isolated from <I>P. multiflorum</I> by focusing on its role in the induction of phase II antioxidant enzymes and the modulation of upstream signaling pathways. In microglia, CRPE56IGIH significantly inhibited lipopolysaccharide (LPS)-stimulated nitric oxide and prostaglandin E<SUB>2</SUB> production with nonspecific cytotoxicity. CRPE56IGIH also markedly inhibited LPS-inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 protein and mRNA expression in the same manner as it inhibited nitric oxide and prostaglandin E<SUB>2</SUB> production. In the control cells, NF-κB transactivation and nuclear translocation occurred at a baseline level, which was significantly increased in response to LPS. However, pretreatment with CRPE56IGIH concentration-dependently inhibited the LPS-induced NF-κB transactivation and nuclear translocation. The phosphorylation of Janus kinase-signal transducers and activators of transcription and mitogen-activated protein kinases was markedly upregulated by LPS, but considerably and dose-dependently inhibited by pretreatment with CRPE56IGIH. Furthermore, CRPE56IGIH induced the expression of phase II antioxidant enzymes, including heme oxygenase-1 (HO-1) and NADPH dehydrogenase quinone-1 (NQO-1). The activation of upstream signaling pathways, such as the Nrf2 pathway, was significantly increased following CRPE56IGIH treatment. Furthermore, the anti-neuroinflammatory effect of CRPE56IGIH was reversed by transfection of Nrf2, HO-1, and NQO-1 siRNA. Our results indicated that CRPE56IGIH isolated from <I>P. multiflorum</I> could be used as a natural anti-neuroinflammatory agent that induces phase II antioxidant enzymes <I>via</I> Nrf2 signaling.</P> <P><B>Highlights</B></P> <P> <UL> <LI> CRPE56IGIH is a natural compound isolated from <I>Polygonum multiflorum.</I>. </LI> <LI> CRPE56IGIH inhibits LPS induced neuroinflammatory response in microglia. </LI> <LI> CRPE56IGIH inhibits LPS-induced NF-κB and JAK-STATs activation in microglia. </LI> <LI> Nrf2 mediates the anti-neuroinflammation of CRPE56IGIH in microglia. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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Park, Sun-Whan,Ryou, Jungsang,Choi, Woo-Young,Han, Myung-Guk,Lee, Won-Ja Allen Press, etc 2016 The American journal of tropical medicine and hygi Vol.95 No.6
<P>Since the first reported case of severe fever with thrombocytopenia syndrome (SFTS) in South Korea in 2013, between 2013 and 2015, we collected 1,697 serum samples from suspected patients who experienced symptoms of SFTS. We performed reverse transcriptase polymerase chain reaction using total RNA extracted from the patients' sera. When viral RNA was detected in the sera, SFTS was diagnosed. Among the 1,697 samples, 170 were positive for SFTS virus. We then analyzed the epidemiologic features of these 170 cases. As a result, we found that the annual number of cases increased steadily. However, the annual case fatality rate exhibited a downward trend. The majority of patients were aged ≥ 60 years, and most cases occurred during May–October in the eastern and southern parts of the country. These results may be useful for effective SFTS control by describing the clinical and epidemiologic features of the disease in South Korea.</P>
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( Sun Whan Park ),( Jung Sang Ryou ),( Seok Min Yun ),( Chan Park ),( Won Ja Lee ),한명국 ( Myung Guk Han ) 대한인수공통전염병학회 2014 창립총회 및 학술대회 초록집 Vol.2014 No.1
Severe fever with thrombocytopenia syndrome (SFTS) is a new emerging viral infectious disease, first reported in China in 2010. Patients with SFTS have been reported recently in South Korea and Japan in 2013. Totally 36 cases of SFTS were identified in Korea in 2013 with case fatality rate of 47%. The SFTS is characterized by acute febrile illness, thrombocytopenia, leucopenia, gastrointestinal symptoms, elevated serum enzymes and multi-organ failure which are not specific signs and symptoms for SFTS. The SFTS virus (SFTSV) causing SFTS belongs to the genus Phlebovirus in the family Bunyaviridae. Heartland viruses and Hunter Island Group virus (HIGV) which are related to but distinctly different from SFTSV were isolated from patients in the US and ticks in Australia, respectively. The patients infected with Heartland virus presented a similar signs and symptoms to SFTS. HIGV was isolated from ticks collected from shy albatross on Albatross Island, a small island in the Hunter Island Group in northwestern Tasmania, Australia. The SFTSV has been detected in Haemaphysalis longicornis and Rhipicephalus microplus ticks suggesting that the causative agent of SFTS, SFTSV is transmitted possibly to humans by ticks, such as H. longicornis which is considered as the principal vector of SFTSV. Recently Amblyomma testudinarium and Ixodes nipponensis are also implicated as the vector of SFTSV. Although cases of person-to-person transmission through contact with infected patient’s blood or mucous have also been reported in China, transmission of SFTSV takes place by biting of ticks infected with SFTSV. The SFTS presents with clinical manifestations similar to those of other infectious vector-borne diseases, such as hemorrhagic fever with renal syndrome (HFRS), scrub typhus, leptospirosis and anaplasmosis, strongly suggesting the need for differential diagnosis of SFTS from other infectious diseases. HFRS, leptospirosis and anaplasmosis are caused by Hantavirus, Leptospira interrogans and Anaplasma phagocytophilum, respectively. Wild rodents (Apodemus agrarius) play the role of the primary natural reservoir for these pathogens. HFRS, scrub typhus and leptospirosis are endemic in eastern and south-east Asia including Korea. In terms of distribution of hosts and reservoirs of vector-borne pathogens in the environment, and current coexistence of these diseases in the same epidemic area, concurrent infections of these vector-borne diseases can occur. Therefore, a reliable SFTSV detection tool is urgently required to provide early diagnosis of SFTS to support clinical care, infection control and epidemiological surveillance. Laboratory diagnosis of SFTSV infection is carried out by various ways, including nucleic acid amplification, detection of viral antigen, virus isolation and antibody detection to SFTSV using by real-time RT-PCR, Vero E6 cell culture, enzyme-linked immunosorbent assay (ELISA) and indirect fluorescent assay (IFA). Conventional RT-PCR and real-time RT-PCR was developed in our laboratory and applied to detect SFTSV from hospitalized patients who presented SFTS symptoms. The SFTSVs were detected from 35 specimens among more than 300 serum specimens in 2013 and the nucleotide sequence was analyzed for identification of the SFTSV. The Korean isolates of SFTSV showed 93-98% similarityof the nucleotide sequences to Chinese and Japanese isolates of SFTSV and were distinctly different from Heartland virus. SFTSVs were also isolated by Vero E6 cell culture and identified by the nucleotide sequence, IFA using monoclonal antibodies, and electron microscopy. As reported, antibody to SFTSV can be detected as early as 2 to 4 days after illness onsets by serological assays and persists in some patients even one year after recovery. Seroconversion against SFTS V in patients with SFTS occurs mostly more than 3 weeks after onsets of illness. We developed IFA for laboratory diagnosis and determined serologic cross reactivity of SFTSV to Hantavirus and rickets. Slides for IFA were prepared with Vero E6 cells infected with SFTSV and Hantaan virus (HTNV). Commercial IFA kits for Anaplasma, Ehrlichia, Leptosira and Origentia spp were also used in the study. Serum specimens of SFTSV patients, sera of HTNV IgG antibody of more than 512 and paired sera of scrub typhus patients were tested with IFA. None of sera specimens showed specific antibody reaction to SFTSV infected cells and antigens assayed by IFA. IgG titers to each homogeneous antigen of HTNV and O.tsutsugamushi assayed by IFA were ranged from 512 to 4,096 and from 0 to 8,192. These results suggest that SFTSV does not have cross reactivity to at least, HTNV and O. tsutsugamushi. Considered currently occurrence of SFTSV, HTNV and O. tsutsugamushi in the same epidemic of the country, concurrent infection can be identified by serological assays. In the presentation, we report a case of coinfection with SFTSV and Hantavirus in humans. To the best of our knowledge, this is the first case report of coinfection with SFTSV and Hantavirus. A 66-year-old farm-dwelling woman was admitted to the hospital with a 6-day history of worsening fever and myalgia. Neutropenia and thrombocytopenia were evident on admission to the intensive care unit. SFTSV infection was suspected based on clinical findings and laboratory test results, although the patient had no recollection of a tick bite and there was no evidence of tick bites. She was treated with plasma exchange and oral ribavirin (4.0g/day) after 10 days of illness onset and had fully recovered at 15 days after illness onset Considering the concurrence of SFTS, HFRS and ricketiisial diseases in the endemic area and the higher possibility of exposure to pathogens due to the patient’s area of residence and occupation as a farmer, coinfection with SFTSV, hantavirus and ricketiisial agents in the patient is suggested. Determining the effects of coinfection on disease prognosis and laboratory diagnosis could be helpful in deciding patient treatment and management.
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