1.Inhibition of Sanggenon G Isolated from Morus alba on the Metastasis of Cancer Cell
Long CUI ; Hyunsun LEE ; Wonkeun OH ; Jongseog AHN
Chinese Herbal Medicines 2011;03(1):23-26
Objective An organic layer prepared from the cortex of Morus alba (Moraceae) was studied in order to identify the active compounds for heparinase. Methods Bioassay-guided fractionation resulted in the isolation of sanggenon G Results The compound showed inhibitory activity with IC50 of 3.7 μmol/L on heparinase in vitro as well as 24 μmol/L in invasion assay using MDA-MB231 cells. Sanggenon G also had the moderate cytotoxicity at SW 620 (colon) and ACHN (kidney) cancer cell lines with IC50 of 10.96 and 13.44 μmol/L, respectively. Conclusion This is the first time that prenylated flavonoid sanggenon G is described as heparinase inhibitor. Besides, this flavonoid would be expected to be a metastasis inhibitor of cancer cells and also a valuable reagent to explore the mechanism of heparinase/heparanase-mediated metastasis.
2.Analysis of 352 cases for cytogenetic study.
Young Jin KIM ; Jin Sook OH ; Wonkeun SONG ; Young UH ; Myung Seo KANG ; Kap Jun YOON
Korean Journal of Clinical Pathology 1991;11(3):655-660
No abstract available.
Cytogenetics*
3.Evaluation of a commercial microdilution (ATB ANA) system forsusceptibility testing of anaerobic bacteria.
Kyungwon LEE ; Yunsop CHONG ; Oh Hun KWON ; In Ho JANG ; Wonkeun SONG ; Kap Jun YOON
Korean Journal of Clinical Pathology 1992;12(3):341-346
No abstract available.
Bacteria, Anaerobic*
4.Evaluation of a commercial microdilution (ATB ANA) system forsusceptibility testing of anaerobic bacteria.
Kyungwon LEE ; Yunsop CHONG ; Oh Hun KWON ; In Ho JANG ; Wonkeun SONG ; Kap Jun YOON
Korean Journal of Clinical Pathology 1992;12(3):341-346
No abstract available.
Bacteria, Anaerobic*
5.Evaluation of four serologic methods for the diagnosis of leptospirosis.
Kap Jun YOON ; Wonkeun SONG ; Chang Hoon LEE ; Inryul CHOI ; Kye Chul SHIN ; Hee Bok OH
Korean Journal of Clinical Pathology 1992;12(2):265-270
No abstract available.
Diagnosis*
;
Leptospirosis*
6.Evaluation of four serologic methods for the diagnosis of leptospirosis.
Kap Jun YOON ; Wonkeun SONG ; Chang Hoon LEE ; Inryul CHOI ; Kye Chul SHIN ; Hee Bok OH
Korean Journal of Clinical Pathology 1992;12(2):265-270
No abstract available.
Diagnosis*
;
Leptospirosis*
7.Isolation of Healthcare-Associated Pathogens from Cellular Phones Used by Medical Personnel.
Jae Seok KIM ; Oh Kun KWON ; Wonkeun SONG ; Han Sung KIM ; Ji Young PARK ; Hyoun Chan CHO ; Kyu Man LEE ; Hae Ran LEE
Korean Journal of Nosocomial Infection Control 2010;15(1):36-40
BACKGROUND: Cellular phone has become a necessary device for communicating in hospitals. Cellular phones contaminated with bacteria may serve as a fomite in the transmission of pathogens by the hands of medical personnel. We investigated the bacterial contamination of cellular phones used by medical personnel in a tertiary hospital. METHODS: Culture swabs were obtained from 101 cellular phones and 99 anterior nasal cavities from medical personnel using cellular phones. The swabs were inoculated on blood agar, MacConkey agar, mannitol salt agar, and enterococcal broths containing 6microgram/mL vancomycin for 48 h at 37degrees C. The bacteria were identified on the basis of colony morphology, gram staining characteristics, catalase test, coagulase test, and DNase test; Microscan (Siemens, USA) was used for the identification of enterococci. RESULTS: Of the 101 cellular phones, 13 were contaminated with Staphylococcus aureus (including 4 methicillin-resistant S. aureus [MRSA]), 61 with coagulase-negative staphylococci (CoNS) (including 38 methicillin-resistant CoNS), 27 with Micrococcus spp., 11 with diphtheroids, 67 with Bacillus spp., and 4 with viridans streptococci. No gram-negative bacilli were isolated. Nasal swabs yielded 36 S. aureus, including 9 MRSA. Only 1 of 9 cellular phones used by the MRSA carriers was contaminated with MRSA. CONCLUSION: Cellular phones used by some medical personnel were contaminated with pathogens such as S. aureus or MRSA. Although, the clinical implications of pathogens isolated from cellular phones have not been fully investigated, pathogens could be transmitted by the hands of medical personnel who are cellular phone users.
Agar
;
Bacillus
;
Bacteria
;
Catalase
;
Cellular Phone
;
Coagulase
;
Deoxyribonucleases
;
Disinfection
;
Fomites
;
Hand
;
Hand Hygiene
;
Mannitol
;
Methicillin Resistance
;
Methicillin-Resistant Staphylococcus aureus
;
Micrococcus
;
Nasal Cavity
;
Staphylococcus aureus
;
Tertiary Care Centers
;
Vancomycin
;
Viridans Streptococci