1.The Effect of Iron Limmted Condition on Outer Membrane of Vibrio mimicus.
Jin Woo JU ; Seong A JU ; Joo An OK ; Cho Rok JUNG
Journal of the Korean Society for Microbiology 1999;34(2):147-155
Vibrio mimicus, marine bacteria pathogenic for fish, can causes acute gastroenteritis in human. Iron limmited condition like in human body, may change the surface structure of V. mimicus. In this study we obse'rved the effect of iron limmited condition on outer membrane protein of V. mimicus. Ethylenediamine-di (O-hydroxy-phenylacetic) acid (EDDA), an iron chelator, delayed the time to reach expotential growth of V. mimicus in brain heart infusion medium from 3 hours to 20 hours. Outer membrane protein of V. mimicus-CON (cultured in BHI) and V. mimicus-EDDA (cultured in BHI contain EDDA) were seperated by 1% sarcosine from total cell envelop. SDS-PAGE of V. mimicus-EDDA and V. mimicus-CON showed similar protein profiles contain 37 kDa major protein but 86 and 90 kDa protein were induced differently. Immunological properties of above protein were determined by ELISA and western blotting. 86 kDa EDDA- specific OMP was induced in V. mimicus (isolate 96-1), V. parahaemolyticus (serotype 09), V. alginolyticus (isolate 95-1), E. coli (human isolate) and V. vulnificus ATCC 27562 in iron limmited condition.
Bacteria
;
Blotting, Western
;
Brain
;
Electrophoresis, Polyacrylamide Gel
;
Enzyme-Linked Immunosorbent Assay
;
Gastroenteritis
;
Heart
;
Human Body
;
Humans
;
Iron*
;
Membrane Proteins
;
Membranes*
;
Sarcosine
;
Vibrio mimicus*
;
Vibrio*
2.Subungual Glomus Tumor: Report of A Case.
Seong Un KIM ; Chung Koo CHO ; Tae Ha WOO
Korean Journal of Dermatology 1976;14(1):69-71
One case of subungual glomus tumor was reported which had characteristic clinical manifestations of paroxysmal pain and tenderness for about 20 years. Histopathologically it was confirmed as subungual glomus tumor. This case was treated completely with simple surgics,l excision of the mass.
Glomus Tumor*
3.Immunohistochemical Staining in Leprosy : Distribution of Lysozyme and S - 100 Protein.
Kwang Hyun CHO ; Yong Ki SEONG ; Chul Woo KIM
Korean Journal of Dermatology 1987;25(4):467-475
Immunohistochemical staining was performed in 20 skin granulomas of 16 patients with leprosy using antisera against lysozyme and S-100 protein. In lepromatous leprosy, lysozyme positive cells and S-100 protein positive cells were rarely found in the dermis. However, the histoid leprosy specimen had large numbers of lysozyrne positive cells and S-100 protein positive cells in granuloma. In borderline group, lysozyme positive cells and S-l00 protein positive cells were found in the dermis. S-100 protein positive cells were diffusely distributed throughuut the granuloma in borderline lepromatous leprosy, while they were often found in lymphocytic mantle in borderline tuberculoid leprosy. In tuberculoid leprosy, lysozymal staining was encouritered in epitheloid cells and giant cells, but S-100 protein positive cells were predominantly found encircling granuloma. In the epidermis, great numbers of S-l00 protein positive cells were found in tuberculoid leprosy than in lepromatous leprosy.
Dermis
;
Epidermis
;
Giant Cells
;
Granuloma
;
Humans
;
Immune Sera
;
Leprosy*
;
Leprosy, Lepromatous
;
Leprosy, Multibacillary
;
Leprosy, Paucibacillary
;
Leprosy, Tuberculoid
;
Muramidase*
;
S100 Proteins
;
Skin
4.Relationship between crustacean consumption and serum perfluoroalkyl substances (PFAS): the Korean National Environmental Health Survey (KoNEHS) cycle 4
Sung Woo HUH ; Seong-yong CHO ; Seongyong YOON ; Daehwan KIM ; Hyun Woo PARK ; Jisoo KANG ; Keon Woo KIM
Annals of Occupational and Environmental Medicine 2024;36(1):e12-
Perfluoroalkyl substances (PFASs) are non-aromatic organic compounds, whose hydrogen atoms in the carbon chain substituted by fluorine atoms. PFASs exhibit developmental toxicity, carcinogenicity, hepatotoxicity, reproductive toxicity, immunotoxicity, and hormone toxicity. PFASs are used in the production of disposable food packages, aircraft and automobile devices, cooking utensils, outdoor gear, furniture and carpets, aqueous film forming foam (AFFF), cables and wires, electronics, and semiconductors. This study aimed to determine the association between crustacean consumption and serum PFASs. Adult participants (2,993) aged ≥ 19 years were extracted from the 4th cycle data of the Korean National Environmental Health Survey (KoNEHS). Based on the 50th percentile concentrations of serum PFASs, participants were divided into the low-concentration group (LC) and the high-concentration group (HC). General characteristics, dietary factors, coated product usage, and personal care product usage, an independent t-test and χ2 test were analyzed. The odds ratio (OR) of serum PFAS concentration against crustacean consumption was estimated via logistic regression analysis adjusting for general characteristics, dietary factors, coated product usage, and personal care product usage. The OR for the HC of serum PFASs was higher in individuals with ≥once a week crustacean consumption than in those with < once a week crustacean consumption. Estimated ORs were perfluorohexanesulfonic acid 2.15 (95% confidence interval [CI]: 1.53–3.02), perfluorononanoic acid (PFNA) 1.23 (95% CI: 1.07–1.41), and perfluorodecanoic acid (PFDeA) 1.42 (95% CI: 1.17–1.74) in males, and perfluorooctanoic acid 1.48 (95% CI: 1.19–1.84), perfluorooctanesulfonic acid 1.39 (95% CI: 1.27–1.52), PFNA 1.70 (95% CI: 1.29–2.26) and PFDeA 1.43 (95% CI: 1.32–1.54) in females. This study revealed the association between the crustacean consumption and concentrations of serum PFASs in general Korean population.
5.Relationship between crustacean consumption and serum perfluoroalkyl substances (PFAS): the Korean National Environmental Health Survey (KoNEHS) cycle 4
Sung Woo HUH ; Seong-yong CHO ; Seongyong YOON ; Daehwan KIM ; Hyun Woo PARK ; Jisoo KANG ; Keon Woo KIM
Annals of Occupational and Environmental Medicine 2024;36(1):e12-
Perfluoroalkyl substances (PFASs) are non-aromatic organic compounds, whose hydrogen atoms in the carbon chain substituted by fluorine atoms. PFASs exhibit developmental toxicity, carcinogenicity, hepatotoxicity, reproductive toxicity, immunotoxicity, and hormone toxicity. PFASs are used in the production of disposable food packages, aircraft and automobile devices, cooking utensils, outdoor gear, furniture and carpets, aqueous film forming foam (AFFF), cables and wires, electronics, and semiconductors. This study aimed to determine the association between crustacean consumption and serum PFASs. Adult participants (2,993) aged ≥ 19 years were extracted from the 4th cycle data of the Korean National Environmental Health Survey (KoNEHS). Based on the 50th percentile concentrations of serum PFASs, participants were divided into the low-concentration group (LC) and the high-concentration group (HC). General characteristics, dietary factors, coated product usage, and personal care product usage, an independent t-test and χ2 test were analyzed. The odds ratio (OR) of serum PFAS concentration against crustacean consumption was estimated via logistic regression analysis adjusting for general characteristics, dietary factors, coated product usage, and personal care product usage. The OR for the HC of serum PFASs was higher in individuals with ≥once a week crustacean consumption than in those with < once a week crustacean consumption. Estimated ORs were perfluorohexanesulfonic acid 2.15 (95% confidence interval [CI]: 1.53–3.02), perfluorononanoic acid (PFNA) 1.23 (95% CI: 1.07–1.41), and perfluorodecanoic acid (PFDeA) 1.42 (95% CI: 1.17–1.74) in males, and perfluorooctanoic acid 1.48 (95% CI: 1.19–1.84), perfluorooctanesulfonic acid 1.39 (95% CI: 1.27–1.52), PFNA 1.70 (95% CI: 1.29–2.26) and PFDeA 1.43 (95% CI: 1.32–1.54) in females. This study revealed the association between the crustacean consumption and concentrations of serum PFASs in general Korean population.
6.Relationship between crustacean consumption and serum perfluoroalkyl substances (PFAS): the Korean National Environmental Health Survey (KoNEHS) cycle 4
Sung Woo HUH ; Seong-yong CHO ; Seongyong YOON ; Daehwan KIM ; Hyun Woo PARK ; Jisoo KANG ; Keon Woo KIM
Annals of Occupational and Environmental Medicine 2024;36(1):e12-
Perfluoroalkyl substances (PFASs) are non-aromatic organic compounds, whose hydrogen atoms in the carbon chain substituted by fluorine atoms. PFASs exhibit developmental toxicity, carcinogenicity, hepatotoxicity, reproductive toxicity, immunotoxicity, and hormone toxicity. PFASs are used in the production of disposable food packages, aircraft and automobile devices, cooking utensils, outdoor gear, furniture and carpets, aqueous film forming foam (AFFF), cables and wires, electronics, and semiconductors. This study aimed to determine the association between crustacean consumption and serum PFASs. Adult participants (2,993) aged ≥ 19 years were extracted from the 4th cycle data of the Korean National Environmental Health Survey (KoNEHS). Based on the 50th percentile concentrations of serum PFASs, participants were divided into the low-concentration group (LC) and the high-concentration group (HC). General characteristics, dietary factors, coated product usage, and personal care product usage, an independent t-test and χ2 test were analyzed. The odds ratio (OR) of serum PFAS concentration against crustacean consumption was estimated via logistic regression analysis adjusting for general characteristics, dietary factors, coated product usage, and personal care product usage. The OR for the HC of serum PFASs was higher in individuals with ≥once a week crustacean consumption than in those with < once a week crustacean consumption. Estimated ORs were perfluorohexanesulfonic acid 2.15 (95% confidence interval [CI]: 1.53–3.02), perfluorononanoic acid (PFNA) 1.23 (95% CI: 1.07–1.41), and perfluorodecanoic acid (PFDeA) 1.42 (95% CI: 1.17–1.74) in males, and perfluorooctanoic acid 1.48 (95% CI: 1.19–1.84), perfluorooctanesulfonic acid 1.39 (95% CI: 1.27–1.52), PFNA 1.70 (95% CI: 1.29–2.26) and PFDeA 1.43 (95% CI: 1.32–1.54) in females. This study revealed the association between the crustacean consumption and concentrations of serum PFASs in general Korean population.
7.Safety of Surgical Tracheostomy during Extracorporeal Membrane Oxygenation.
Hye Ju YEO ; Seong Hoon YOON ; Seung Eun LEE ; Doosoo JEON ; Yun Seong KIM ; Woo Hyun CHO ; Dohyung KIM
Korean Journal of Critical Care Medicine 2017;32(2):197-204
BACKGROUND: The risk of bleeding during extracorporeal membrane oxygenation (ECMO) is a potential deterrent in performing tracheostomy at many centers. To evaluate the safety of surgical tracheostomy (ST) in critically ill patients supported by ECMO, we reviewed the clinical correlation between preoperative coagulation status and bleeding complication-related ST during ECMO. METHODS: From April 1, 2012 to March 31, 2016, ST was performed on 38 patients supported by ECMO. We retrospectively reviewed and analyzed the medical records including complications related to ST. RESULTS: Heparin was administered to 23 patients (60.5%) for anticoagulation during ECMO, but 15 patients (39.5%) underwent ECMO without anticoagulation. Of the 23 patients administered anticoagulation therapy, heparin infusion was briefly paused in 13 prior to ST. The median platelet count, international normalized ratio, and activated partial thromboplastin time before ST were 126 ×109/L (range, 46 to 434 ×109/L), 1.2 (range, 1 to 2.3) and 62 seconds (27 to 114.2 seconds), respectively. No peri-procedural clotting complications related to ECMO were observed. Two patients (5.3%) suffering from ST-related major bleeding required surgical hemostasis. Minor bleeding after ST occurred in two cases (5.3%). No significant difference was found according to anticoagulation management (P = 0.723). No fatality was attributable to ST. CONCLUSIONS: The complication rates of ST in the patients supported by ECMO were low. Therefore, ST performed by an experienced operator, and with careful optimization of coagulation status, is a relatively safe procedure; the use of ST with ECMO should thus not be dismissed on account of the potential for bleeding caused by the administration of anticoagulants.
Anticoagulants
;
Critical Illness
;
Extracorporeal Membrane Oxygenation*
;
Hemorrhage
;
Hemostasis, Surgical
;
Heparin
;
Humans
;
International Normalized Ratio
;
Medical Records
;
Partial Thromboplastin Time
;
Platelet Count
;
Retrospective Studies
;
Tracheostomy*
8.Impact of Physician Delay on Postoperative Outcome of Patients with Acute Appendicitis.
Byeong Wook CHO ; Seong Heum PARK ; Seo Gue YOON ; Kyong Woo CHOI
Journal of the Korean Society of Coloproctology 1998;14(3):561-568
BACKGROUND: It is controversial whether the delay of surgery for acute appendicitis by physician results in higher morbidity. Our present study explores this problem of physician delay on the postoperative outcome of patients with acute appendicitis. MATERIAL AND METHODS: Among 432 patients admitted for the presumptive diagnosis of acute appendicitis between Jan., 1995 and Dec., 1997, 358 patients with pathologically proven acute appendicits were analyzed. Physician delay from the hospital admission to the surgery was evaluated in relation to the stage of the disease at operation and postoperative outcome. RESULTS: Postoperative complications occurred signifficantly higher in advanced appendicitis group, than in simple appendicitis group. Postoperative oral consumption started significantly later and hospital days are significantly prolonged in those group. Both patient and physician delays significantly affect the stage of the disease. The finding that physician delay correlated with the stage, however, was denied by multivariate analysis. CONCLUSION: On the contrary to the patient delay, physician delay does not affect the stage of the acute appendicitis nor lead to increased incidence of postoperative complication. Physician delay to clarify the diagnosis is a reasonable strategy and it does not affect the outcome adversely.
Appendicitis*
;
Diagnosis
;
Humans
;
Incidence
;
Multivariate Analysis
;
Postoperative Complications
9.Purification Siderophore from Vibrio mimicus ATCC 33653 and its Effect to Bacterial Pathogenecity.
Soo Jung PARK ; Seong A JU ; Moon Soo HEO ; Cho Rock JUNG ; Jin Woo JU
Journal of the Korean Society for Microbiology 1999;34(5):461-470
Growth under conditions of iron-restriction and the production of siderophore was examined in Vibrio mimicus ATCC 33653. This strain grew and multiplied in the presence of the high-affinity iron chelators ethylenediamine-di (o-hydroxyphenylacetic acid). Chrorne azurol S (CAS) agar and solution were used to detect the production of siderophore under these condition. Siderophore could be detected in the iron-rcstricted culture supernatants. The siderophore was extracted from iron-restricted culture supernatants by phenol-chloroform-ether method and purified by Dowex ion-exchange and Sephadex G-25 gel filtracton chromatography. The purified siderophore was confirmed by paper chromatography and HPLC. The Purified siderophore enhanced the growth of V. mimicus when the bacterium was grown in iron limited medium. Injection of both the siderohore and the bacteria to mice resulted in more rapid death than that of the only bacteria. However, the siderophore did not show lethality to mice and any toxicity to cell line like HeLa and U937.
Agar
;
Animals
;
Bacteria
;
Cell Line
;
Chelating Agents
;
Chromatography
;
Chromatography, High Pressure Liquid
;
Chromatography, Paper
;
Iron
;
Mice
;
Vibrio mimicus*
;
Vibrio*
10.Characterization of a Vibrio parahaemolyticus Phage Isolated from Marine.
Sun Ok YOON ; Seong A JU ; Moon Soo HEO ; Cho Rok JUNG ; Jin Woo JU
Journal of the Korean Society for Microbiology 1999;34(5):423-433
A novel bacteriophage, designated as VPP97, that infects the strains of Vibiro parahaemolyticus (hallophilic, Gram-negative bacterium) isolated most commonly from marine environments, has been discovered, and several of its properties have been determined. The plaques were clear and sized 0.6-1.0 mm in diameter. The virion forms a single band on 70% sucrose gradient and p1.50 CsC1 gradient by sucrose gradient centrifugation and CsCI gradient centrifugation respectively. It has a hexagonal head and a relatively long tail, as shown by electron microscopy. Vibrio alginolyticus, Vibrio fluvialis and Vibrio furnissii were also sensitive to this phage It was almost totally inactivated at 70 degree C and at pH below 5 or over 10. The nucleic acid of VPP97 is composed of DNA. The VPP97 had 9 specific structural proteins sized between 21.5 kDa and 97.4 kDa on SDS-PAGE. When V. parahaemolyticus cultures were treated with either phage VPP97 or one of the several antibiotics for 2 hours, the viable number of V. parahaemolyticus treated with the phage VPP97 is lower than that treated with chloramphenicol, erythromycin or penicillin, but not lower than that treated with tetracycline. Mice that have responded to the phage treatment revealed the lower numbers of V. parahaemolyticus in small intestine and less damage on small intestine compared to the untreated mice. Therefore, we suggest that the phage treatment appears effective to the infection by V. parahaemolyticus.
Animals
;
Anti-Bacterial Agents
;
Bacteriophages*
;
Centrifugation
;
Chloramphenicol
;
DNA
;
Electrophoresis, Polyacrylamide Gel
;
Erythromycin
;
Head
;
Hydrogen-Ion Concentration
;
Intestine, Small
;
Mice
;
Microscopy, Electron
;
Penicillins
;
Sucrose
;
Tail
;
Tetracycline
;
Vibrio alginolyticus
;
Vibrio parahaemolyticus*
;
Vibrio*
;
Virion