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Effect of Dendropanax morbifera extract Addition on Chungkukjang on Immune Response of Mice (황칠 추출물을 첨가한 청국장이 마우스의 면역기능에 미치는 효과)

  • Kim, Jin-Sol;Cheong, Min-Ju;Chung, Kyoung-A;Song, Seon-Young;Lee, Hyun-Hwa
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.20 no.6
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    • pp.430-438
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    • 2019
  • This study is to investigate increase immunomodulatory activity of Chungkukjang added with Dendropanax morbifera extract. There are four groups divided that Control, Dendropanax morbifera extract group, Chungkookjang group and Chungkukjang added to Dendropanax morbifera extract group which of five mouses each group. Their immunological characteristics were compared with either general Chungkukjang or non treated group in the tested male ICR mice. There were no significant difference in body weight and organ weight. In the plaque forming cell assay, Dendropanax morbifera extract 250 and 500 mg/kg groups measured significant increase over the control group. The values of lymphocytes were significantly increased in the Dendropanax morbifera extract 500 mg/kg group campared with the control group. In the general Chungkukjang 400 mg/kg added with Dendropanax morbifera extract 500 mg/kg group, total serum immunoglobulin G concentration was significantly higher than the control group and their spleen tissues observed proliferation of white puls. These results demonstrated that Chungkukjang Added with Dendropanax morbifera extract was provided enhance of immunomodulatory activity and suggest that it can be used as various functional foods, based on foods promote immune system health.

Effects of Herbal Medicine Complex on Skin Inflammation and Atopic Dermatitis (한방 복합물이 피부 염증 및 아토피 피부염에 미치는 영향)

  • Ji-Hee, Choi;In-Hwan, Joo;Jong-Min, Park;Dong-Hee, Kim
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.36 no.5
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    • pp.187-192
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    • 2022
  • The purpose of this study is to examine the effect of herbal medicine complex (HMC) containing Camellia sinensis L., Duchoesna chrysantha, Houttuynia cordata Thunberg, Poncirus trifoliata Rafinesque on skin inflammation and atopic dermatitis. First, we examined the anti-inflammatory effect of HMC in TNF-α induced human keratinocytes (HaCaT cell). Real-time PCR and western blotting were performed to evaluate the expression of inflammatory cytokines (e.g., iNOS, COX-2, IL-6, IL-8) mRNA and protein. Four-weeks old male NC/Nga mice were treated with 1% 2,4-dinitrochlorobenzene (DNCB) solution and used as an atopic dermatitis mice model. And, HMC (200 mg/kg or 400 mg/kg) was administered directly into the stomach of mice for 4 weeks, and blood or serum analysis, tissue staining were performed after oral gavage. As a result HMC inhibited the mRNA expression of iNOS, COX-2, IL-6, and IL-8, which had been increased by TNF-α in HaCaT cells. In addition, the protein expression was also significantly suppressed in the same way as the mRNA expression results. The in vivo experiment results showed that, HMC administration reduced thickening of the epidermis and infiltration of eosinophil into the skin stratum basale compared to DNCB treatment. In addition, HMC administration significantly reduced the inflammatory cytokines (IL-4, IL-5, IL-6, and IL-13) production and immunocyte (white blood cell, lymphocyte, neutrophil, and eosinophil) count compared to DNCB treatment. Moreover, the serum IgE and histamine level was decreased by HMC administration. These results suggest that HMC can be used as effective herbal medicine extract for skin inflammation and atopic dermatitis. And this study may contribute to the development of the herbal medicine-based drug for the treatment of skin inflammation and atopic dermatitis.

Die Organisation von Mikrostrukturen der zweisprachigen $W\"{o}rterb\"{u}cher$ Deutsch/Koreanisch (독-한 두말사전의 미시구조 조직)

  • Kim Kyong
    • Koreanishche Zeitschrift fur Deutsche Sprachwissenschaft
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    • v.5
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    • pp.183-202
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    • 2002
  • Die vorliegende Arbeit verfolgt zwei Ziele: zum einen sollen die Entwicklungen in der modernen zweisprachigen Lexikographie mit Ausgangssprache Deutsch skizzenhaft vorgestellt und einige Forschungsdefizite benannt werden, zum anderen sollen die Ergebnisse und Methoden der neueren Lexikographie anhand von Beispielartikeln der drei $einschl\"{a}gigen$ deutsch-koreanischen $Gro{\ss}w\"{o}rterblicher$ kontrastiert und diskutiert werden. Zuerst wird eine Typologie der zweisprachigen $W\"{o}rterb\"{u}cher$ erstellt, derzufolge es jeweils 2 aktive und 2 passive Worterblicher pro Sprachenpaar gibt. Das Aktiv-Passiv­Prinzip gilt als ein grundlegender Ausgangspunkt $f\"{u}r$ die zweisprachige Lexikographie. Eine Erweiterung der Unterscheidungskriterien scheint nicht $zweckm\"{a}{\ss}ig$ und angesichts praktischer Schwierigkeiten auch kaum realisierbar. $Pl\"{a}diert\;wird\;f\"{u}r\;eine\;st\"{a}rkere\;Ber\"{u}cksichtigung$ der Benutzungssituationen, zu denen z.B. der Grad der Sprachbeherr­schung der jeweiligen Benutzergruppe, die $m\"{o}glichen\;Benutzungsanl\"{a}sse$, der Kenntnisstand $bez\"{u}glich$ der Benutzerhinweise sowie die technische Geschicklichkeit bei der $W\"{o}rterbuch-benutzung\;etc.\;zu\;z\"{a}hlen$ sind. In makrostruktueller Hinsicht werden die Selektion und die Anordnung der Lemmata diskutiert. Bei der Lemmaauswahl $w\"{a}re\;es\;w\"{u}nschenswert$, auf der Grundlage eines Lemmavergleiches der verschiedensten Quellenworterbucher ein datenbasiertes Korpus zu erstellen. Dazu $k\"{o}nnten$ folgende Materialien ausgewertet werden: (1) einsprachige allgemeine (ad spezielle) $W\"{o}rterb\"{u}cher$ (z.B. Deutsch/Koreanisch), (2) zweisprachige allgemeine (od spezielle) Worterblicher (z.B. Deutsch-Koreanisch, Deutsch-Englisch) etc. Die $blo{\ss}e\;\"{U}bersetzung$ lediglich eines einzigen $Quellenw\"{o}rterbuches\;k\"{o}nnte$ dagegen zu $unerw\"{u}nschten\;Einseitigkeiten\;f\"{u}hren$. Was die Anordnung der Lemmata in zweisprachigen $W\"{o}rterb\"{u}chern$ betrifft, $k\"{o}nnen$ dieselben drei makrostrukturellen Typen unterschieden werden, wie in einsprachigen $W\"{o}rterb\"{u}chern$: (1) glattalphabetisch, (2) nischenalphabetisch, (3) nestalphabetisch. Unter den zu untersuchenden $W\"{o}rterb\"{u}chern$ weisen das EDK und das HDK die nischenalpha­betische Makrostruktur auf, das MDK ist dagegen nestalphabetisch angeordnet. Je nachdem, wie die Polysemiestruktur und die Mehr-Wort-Einheit kombinieren, werden die drei Arten der Mikrostruktur unterschieden: (1) die integrierte Mikrostruktur, (2) die nichtintegrierte Mikrostruktur, (3) die partiell integrierte Mikrostruktur. $W\"{a}hrend$ das EDK und das HDKeine integrierte Mikrostruktur besitzen, weist das HDK eine partiell integrierte Mikrostruktur auf. Die Artikelgestaltung durch die nichtintegrierte Mikrostruktur, die $h\"{a}ufig$ in der zweisprachigen Lexikographie angewandt wird und entsprechende Vorteile besitzt, sallte $k\"{u}nftig\;als\;Gestaltungsm\"{o}glichkeit\;st\"{a}rker$in Betracht gezogen werden. In Bezug auf die Organisation der Mikrostruktur werden vier Bauteile, das sind Lemma-, $\"{A}quivalent-$, Diskriminator- und Beispielangaben untersucht. Die $\"{U}bersetzungs\"{a}quivalente$ werden je nach dem lexikalisch-semantischen Abdeckungsgrad mit dem Lemma in drei Typen eingeteilt: (1) $Voll\"{a}quivalent,\;(2)\;Teil\"{a}quivalent,\;(3)\;Null\"{a}quivalent$. In der Mehrheit kommen die Teil- oder $Null\"{a}quivalente$ vor, weil die ausgangssprachlichen Lemmata und die zielsprachlichen $\"{A}quivalente$ in sich Polysemiestruktur aufweisen. $Informationsm\"{a}ngel$ auszugleichen ist die Funktion des Diskriminators, in dem Glosse, Markierungen und metasprachliche $Erl\"{a}uterungen$ zusammenwirken. $Verbesserungsw\"{u}rdig\;sind\;die\;g\"{a}ngigen$ deutsch-koreanischen $W\"{o}rterb\"{u}cher$ var allem im Hinblick auf die stilistischen Markierungen; die Inkongruenz des Stils zwischen den beiden verschiedenen Sprachen wird bislang zu wenig $ber\"{u}cksichtigt$ und sagar in ein und demselben $W\"{o}rterbuch$ nicht konsequent dargestellt. Trotz der relativen $Geringsch\"{a}tzung$ von Beispielangaben in der $europ\"{a}ischen$ zweisprachigen passiven Lexikographie sallte diesen in deutsch-koreanischen $W\"{o}rterb\"{u}chern$ mehr Aufmerksamkeit gewidrnet werden. Sie sind dem koreanischen Benutzer eine wichtige Hilfe, indem sie die $\"{A}quivalentenangaben\;implizite\;erg\"{a}nzen$ und Informationen $\"{u}ber$ die syntaktisch-semantische und pragmatische Kontextrestriktion bieten. $Dar\"{u}berhinaus$ stellen sie selbst interessante kulturelle, geistige und landeskundliche etc. Informationen dar. Was den Artikelaufbau betrifft, wird das Van Dale-Modell diskutiert, d.h. das kategoriell-semantisch-alphabetische Prinzip, das trotz mancher Kritikpunkte viele interessante Anregungen $f\"{u}r$ die zweisprachige Lexikographie Deutsch-Koreanisch bietet, wo z.B. noch nicht die $Pr\"{a}positionen$ in der Beispielangabe durch typographische Hervorhebung $pr\"{a}sentiert$ worden sind. Aus $Platzgr\"{u}nden$ sind hier nur wenige Beispielartikel mit substantivischen Lemmata $angef\"{u}hrt$ und analysiert worden. Um die $h\"{o}here$ Generalisierbarkeit zu erreichen, brauchen die Untersuchungs- materialien mindestens einen bestimmten Umfang. Derartige empirische Forschungen $k\"{o}nnen$ als Impulse dazu beitragen, $k\"{u}nftige\;W\"{o}rterb\"{u}cher$ im Sinne einer $Ber\"{u}cksichtigung$ neuerer lexikographischer Erkenntnisse verbessern zu helfen.

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A Study on the Occurrence of Benzo(a)pyrene in Fats and oils by Heat Treatment(I) (유지가열시 Benzo(a)pyrene 생성에 관한 연구(I) -대두유가열시-)

  • 김인숙;안명수;장대경
    • Korean journal of food and cookery science
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    • v.9 no.4
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    • pp.323-328
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    • 1993
  • Benzo(a)pyrene [B(a)P], one of the polycyclic aromatic hydrocarbons (PAHs) is known as a potent carcinogen. As lipid consumption increases recently, the toxic effect of overheated lipid foods and fats & oils were reported increasingly. In this study, the contents of B(a)p, other PAHs and rancidities of soybean oil were determined, and then the proper heating temperature, time and frequency were recommended, The work was carried out using soybean oil heated at $180\pm$5^{\circ}C$$, $200\pm$5^{\circ}C$$, and $300\pm$5^{\circ}C$$,for 50 hours. Acid Value(AV) and Conjugated Diene Value of samples were determined. The contents of B(a)P and other PAHs contents of all samples were masured by HPLC/UV method. The results obtained were as follows; Each content of PAHs in the fresh soybean oil was: Pyr 1.093, B(a)A 0.986, Ch 1.147, DMBA 1.082, B(e)P 0.664, Per 1.135, B(a)P 0.146, DBA 1.053, 3-MC 0.05 rg/kg. When the soybean oil was heated at $180\pm$5^{\circ}C$$, for 10, 20, 30, and 50 hours, B(a)P conterlts in heated soybean oils were 0.391, 0.692, 0.451, and 0.372 $\mu\textrm{g}$/kg respectively. Acid value of them were 0.26, 0.26, 0.29, and 0.33, and conjugated diene value was 0.67, 0.76, 0.99, and 1.04, respectively. When the soybean oil was heated at $200\pm$5^{\circ}C$$,and $300\pm$5^{\circ}C$$,for 10, 20, 30, and 50 hours, B(a)P coiltents in soybean oil heated at $200\pm$5^{\circ}C$$,were 0.844, 0.512, 0.479 and 0.247 Ig/kg respectively, Acid value 0.22, 0.21, 0.23 and 0.51 and CDNV 0.39, 0.49, 3.27, and 3.89. B(a)P contents in soybean oil heated at $300\pm$5^{\circ}C$$,were 0.466, 0.706, 0.607 and 0.247$\mu\textrm{g}$/kg respectively, Acid value 0.47, 1.57, 3.90, and 6.42 and CDNV 0.65, 2.15, 3.00, and 3.88.

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Beneficial Effects of Daebong Persimmon against Oxidative Stress, Inflammation, and Immunity in vivo (대봉감의 항산화, 항염증 및 면역증강 효과)

  • Lee, Hee Jae;Lim, So Young;Kang, Min-Gyung;Park, Jeongjin;Chung, Hyun-Jung;Yang, Soo Jin
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.44 no.4
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    • pp.491-496
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    • 2015
  • The purpose of this study was to assess the antioxidant, anti-inflammatory, and immuno-enhancing effects of Daebong persimmon (DP) and Bansi (BS) in vivo. Two types of astringent persimmons (DP and BS) were used for this experiment. C57BL/6J mice were assigned to the following groups: 1) lean control, 2) high-fat diet control (HF), 3) A region DP (3% wt/wt) with HF diet (A-DP), 4) B region DP with HF diet (B-DP), 5) C region DP with HF diet (C-DP), 6) D region BS with HF diet (D-BS), and 7) E region BS with HF diet (E-BS). All mice were sacrificed after 4 weeks of treatment, after which blood and tissues were collected. Antioxidant enzyme activities, inflammatory markers, and immune factors were evaluated. DP and BS treatments did not alter food intake or body weight, compared with HF. Administration of B-DP increased catalase activities in serum. Hepatic levels of malondialdehyde, a product of lipid peroxidation, were significantly lower in A-DP mice than in the HF group. A-DP had down-regulatory effects against inflammation induced by high-fat diet feeding, as shown by significant reduction of interleukin (IL)-$1{\beta}$, IL-6, and tumor necrosis factor-${\alpha}$. Additionally, A-DP treatment exerted an immuno-stimulatory effect, as shown by increasing levels of immunoglobulin G. DP treatment improved the level of insulin-like growth factor-1. These results indicate that DP has beneficial health effects on oxidative stress, inflammation, and immunity in vivo.

Association study of polymorphism in leukotriene C4 synthase and cysteinyl leukotriene receptor 1 genes with phenotype of asthma and clinical parameters in Korean children (Leukotrienes C4 synthase와 cysteinyl leukotriene receptor 1 유전자 다형성과 한국 소아 천식 표현형 및 임상 지표와의 연관성 연구)

  • Shim, Jung Yeon;Kim, Byung-Joo;Song, Young Hwa;Kang, Mi-Jin;Lee, So-Yeon;Kim, Hyo-Bin;Yu, Jinho;Hong, Soo-Jong
    • Clinical and Experimental Pediatrics
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    • v.52 no.6
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    • pp.680-688
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    • 2009
  • Purpose : Cysteinyl leukotrienes are important proinflammatory mediators in asthma. Recently, it was suggested that a promoter polymorphism in the genes encoding for leukotriene C4 synthase (LTC4S), a key enzyme in the leukotriene synthetic pathway, and cysteinyl leukotriene receptor 1 (CysLTR1) might be associated with aspirin-intolerant asthma. We investigated whether polymorphisms in LTC4S and CysLTR1 genes or their interactions were associated with the asthma phenotype, lung function, or bronchial hyperreactivity (BHR) in Korean children. Methods : A total of 856 asthmatic children and 254 non-asthmatic controls were enrolled; a skin prick test, lung function test and bronchial provocation test were performed. Of those enrolled, 395 children underwent exercise challenge tests. The LTC4S A(-444)C and CysLTR1 T(+927)C were genotyped by polymerase chain reaction-restriction fragment length polymorphism analysis. Results : Of those enrolled, 699 children were classified as having atopic asthma and 277 children, as having exercise-induced asthma (EIA). LTC4S and CysLTR1 polymorphisms were not associated with atopic asthma, EIA, or asthma per se. Lung function and BHR were not significantly different between the wild type (AA or TT) and the variant (AC+CC or TC+CC) genotypes in asthmatics, atopic asthmatics, and EIA (+) asthmatics, while total eosinophil counts were higher in the variant type of LTC4S than in the wild type in atopic asthmatics. There were no associations between the gene-gene interactions of LTC4S and CysLTR1 genotypes and the asthma phenotypes. Conclusion : LTC4S A(-444)C and CysLTR1 T(+927)C polymorphisms and their gene-gene interactions are not associated with asthma phenotype, lung function, or BHR in Korean children.

Die Fahrlässigkeit im medizinischen Behandlungsfehler (의료사고에 있어서 과실 - 과실판단에 대한 판례의 태도를 중심으로-)

  • Yi, Jaekyeong
    • The Korean Society of Law and Medicine
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    • v.17 no.2
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    • pp.29-56
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    • 2016
  • $F{\ddot{u}}r$ den Schadensersatzhaftung des Arztes, sog. die Arzthaftung, ist es vornehmlich vorauszusetzen: die $Sch{\ddot{a}}digungsbehandlung$ des Arztes, die Rechtswidrigkeit und das Verschulden. Zur Problematik der $Fahrl{\ddot{a}}ssigkeit$ in der Stufe des Verschuldens handelt sich es in dieser Beitrag um die Kritisierung der Rechtsprechung. $F{\ddot{u}}r$ die Entscheidung des Verschulden im medizinischen Fehler kommt es darauf an, ob die Sorgfaltspflicht des Arztes verletzt wird. $Daf{\ddot{u}}r$ wird der medizinische Standard rekurriert, den die Rechtsprechung nicht aus materieller, sondern aus normativer Sicht begreift. Erstaunlich $un{\ddot{u}}bereinstimmend$ mit deren Leitsatz wird der medizinische Standard als $Ma{\ss}stab$ der Sorgfaltspflicht materiell - zutreffend nur im Ergebnis - behandelt. Die Sorgfaltspflicht in der Medizin bedeutet nicht die natur-wissenschaftliche Erkenntnisse, sondern eine "Best-$M{\ddot{u}}ssen$" Pflicht. Demnach ist der Standpunkt der Rechtsprechung, wonach den med. Standard normativ bewertet und die Sorgfaltspflicht darduch wieder normativ entscheidet, nicht anders als eine $w{\ddot{o}}rtliche$ Wiederholung. Die Arzthaftung in der Rechtsprechung ist aufgrund mit der Verneinung von der Sorgfaltspflichtverletzung nicht angenommen, welche in der Tat jedoch aus verschiedenen $Gr{\ddot{u}}nden$, wie die Rechtswidrigkeit, die $Fahrl{\ddot{a}}ssigkeit$ oder $Kausalit{\ddot{a}}t$, nicht angenommen. Der $Fahrl{\ddot{a}}ssigkeitsbeweis$ in der Rechtsprechung entwickelt sich mit dem Beweis nach objektivem $Ma{\ss}stab$, der Vermutung nach Anschein-Beweis und der $Beschr{\ddot{a}}nkung$ mit der Wahrscheinlichkeit. Bei Letzterem $geh{\ddot{o}}rt$ es $schlie{\ss}lich$ zum medizinischen Bereich. Ein Eintritt in den fachliche Bereich im Rahmen der Beweislast stellt der Beweiserleichterung $gegen{\ddot{u}}ber$. Aus diesem Hintergrund ist ${\S}630$ h Abs. 5 BGB bemerkenswert, wonach das Vorliegen eines groben Behandlungsfehler $regelm{\ddot{a}}{\ss}ig$ zur Vermutung von der $Kausalit{\ddot{a}}tszusammenhang$ $f{\ddot{u}}hrt$. Dieser Paragraph ist inhaltlich als Beweislastumkehr angesehen. Damit ist es von Nutzen im Fall des groben Fehler, der beim - elementaren - kunstgerechten Verhalten nicht entstanden $h{\ddot{a}}tte$, wie $Hygienem{\ddot{a}}ngel$, ${\ddot{U}}berdosierung$ des Narkotikum.

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Outbreak of Hepatitis A in TaeJon in 1996 : Clinical and Epidemiologic Study in Children (1996년 대전시 서북부에서 발생한 A형 급성 간염)

  • Choi, Jin-Ook;Lee, Kyung-Yil;Lee, Dong-Joon;Han, Ji-Whan;Hwang, Sung-Soo;Lee, Kyong-Su
    • Pediatric Infection and Vaccine
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    • v.4 no.1
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    • pp.90-96
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    • 1997
  • Purpose : Recently a shift in hepatitis A incidence from children to adults has been well noted. We experienced under 15-years old 31 patients who presented hepatitis A infection. In order to prepare for the prevention on hepatitis A outbreak in the future, we studied the clinical and epidemiologic manifestations of these patients. Methods : We enrolled patients from July to December in 1996 (6 months) and evaluated the monthly incidence, geographical distribution, age and sex, and clinical manfestations, including laboratory fadings. Results : Many cases of hepatitis A occured in the summer months, especially August (16/31 cases). Most of patients (87%) were living in the Seo-Ku area (northwest district of the city). In age distribution, there were no cases under 3 years of age, 3 cases from 4~5 years, 13 cases from 6~10 years, 15 cases from 11~15 years. Clinical profiles showed that dark urine, nausea and vomiting, anorexia, abdominal pain, fever, and fatigue were the common presenting symptoms. The initial presenting laboratory tests included total bilirubin 3.3mg/dl, alkaline phosphatase of 856units/L, and serum asparate aminotransferase and alanine aminolransferase levels of 910IU/L and 1239IU/L, respectively. No patient presented atypical clinical courses or complications. Conclusions : Hepatitis A in children shows benign clinical features. This study showed that the possibility of another outbreak of Hepatitis A in the TaeJon area or elsewhere in the near future Korea will be possible. To prevent an outbreak we will be concerned about the anti-HAV IgG prevalance rate in children and preventive modalities including vaccination against hepatitis A.

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Antibody persistence after Haemophilus influenzae type b (Hib) primary vaccination and response to boosters in Korean children (한국 소아에서 Haemophilus influenzae type b (Hib) 기초 예방 접종 후 항체 지속과 추가 접종에 대한 반응)

  • Lee, Hyunju;Park, So Eun;Lim, Soo Young;Choi, Kyong Min;Lee, Hoan Jong;Kim, Kyung Hyo
    • Clinical and Experimental Pediatrics
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    • v.50 no.5
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    • pp.449-456
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    • 2007
  • Purpose : Antibody persistence after primary series of Haemophilus influenzae type b (Hib) vaccine and responses to a boosters are little known in Korean children. We performed this study to evaluate the antibody titer in relation with a booster immunization of Hib vaccine in Korean children. Methods : One hundred forty-four children aged 12-23 months old were enrolled in three university hospitals. The immunogenicity of a boosters with Hib vaccine was assessed in children previously primed with Hib vaccine. Antibody persistence was also assessed in children who had received 3 doses of Hib vaccine without a booster. Anti-polyribosylribitol phosphate (PRP) IgG antibody levels and bactericidal titers were determined by enzyme immunoassay and bactericidal assay at the Center for Vaccine Evaluation and Study, Medical Research Institute, Ewha Womans University. Results : Prior to a booster in the second year of life, geometric mean antibody concentrations were $2.39{\mu}g/mL$ and the percent of subjects who had a anti-PRP antibody level ${\geq}1{\mu}g/mL$ was 68.6%. After boosting, antibody concentration was $19.09{\mu}g/mL$ and the percent of subjects who had a anti-PRP antibody level ${\geq}1{\mu}g/mL$ was 96.5%, which reflects previous immune priming. In subjects who had finished primary immunization only, the bactericidal titer was 3,946 and in subjects who had a booster, it was 11,205. Anti-PRP antibody level was correlated with serum bactericidal titer. Conclusion : Many children aged 12-23 month old still had protective antibodies after recommended primary immunization only. A booster dose seemed to induce good anamnestic antibody responses in Korean children.

Groundwater Flow Analysis in Fractured Rocks Using Zonal Pumping Tests and Water Quality Logs (구간양수시험과 수질검층자료에 의한 균열암반내 지하수 유동 분석)

  • Hamm, Se-Yeong;Sung, Ig-Hwan;Lee, Byeong-Dae;Jang, Seong;Cheong, Jae-Yeol;Lee, Jeong-Hwan
    • The Journal of Engineering Geology
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    • v.16 no.4 s.50
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    • pp.411-427
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    • 2006
  • This study aimed to recognize characteristics of groundwater flow in fractured bedrocks based on zonal pump-ing tests, slug tests, water quality logs and borehole TV camera logs conducted on two boreholes (NJ-11 and SJ-8) in the city of Naju. Especially, the zonal pumping tests using sin91e Packer were executed to reveal groundwater flow characteristics in the fractured bedrocks with depth. On borehole NJ-11, the zonal pumping tests resulted in a flow dimension of 1.6 with a packer depth of 56.9 meters. It also resulted in lower flow dimensions as moving to shallower packer depths, reaching a flow dimension of 1 at a 24 meter packer depth. This fact indicates that uniform permissive fractures take place in deeper zones at the borehole. On borehole SJ-8, a flow dimension of 1.7 was determined at the deepest packer level (50 m). Next, a dimension of 1.8 was obtained at 32 meters of packer depth, and lastly a dimension of 1.4 at 19 meters of packer depth. The variation of flow dimension with different packer depths is interpreted by the variability of permissive fractures with depth. Zonal pumping tests led to the utilization of the Moench (1984) dual-porosity model because hydraulic characteristics in the test holes were most suitable to the fractured bedrocks. Water quality logs displayed a tendency to increase geothermal temperature, to increase pH and to decrease dissolved oxygen. In addition, there was an increasing tendency towards electrical conductance and a decreasing tendency towards dissolved oxygen at most fracture zones.