1.Antibacterial Activity of an Antibiotic (K-681) from Streptomyces sp. 681 against Staphylococcus aureus.
Choon Myung KOH ; Woon Seob SHIN ; Jung Bae KIM ; Dong Heui YI
Journal of the Korean Society for Microbiology 1998;33(1):69-75
The antimicrobial agents reduced infectious diseases significantly. However, antibiotic resistance has followed for almost every antimicrobial agent. Especially, Staphylococcus aureus was one of the most notorious for the multidrug resistance. Streptomyces sp. 681 has been selected for antibiotic-producing strain against methicillin-resistant Staphylococcus aureus (MRSA) from 1,000 strains of Actinomycetales which had been isolated from soil. In antimicrobial susceptibility test, all of the test strains were susceptible to vancomycin. However, most strains of Staphylococcus aureus were found to be resistant to methicillin. Ninety eight (75%) strains out of 129 strains showed multiple resistance pattern to more than 5 antimicrobial agents. The MIC values of the purified antibiotic (K-681) were 1-32 ug/ml against Gram-positive bacteria compared to >128 ug/ml against Grarn-negative bacteria or fungi. The MIC was 8 ug/ml for 90% of the 129 clinical isolates of S. aureus. The antibiotic showed no cytotoxicity against P 388, HeLa, and S180 at the concentration of 500 ug/ml.
Actinomycetales
;
Anti-Infective Agents
;
Bacteria
;
Communicable Diseases
;
Drug Resistance, Microbial
;
Drug Resistance, Multiple
;
Fungi
;
Gram-Positive Bacteria
;
Methicillin
;
Methicillin-Resistant Staphylococcus aureus
;
Soil
;
Staphylococcus aureus*
;
Staphylococcus*
;
Streptomyces*
;
Vancomycin
2.Absent perfusion and nonvisualization by renal scintigraphy in a case of transplant kidney.
Sang Kyun BAE ; Hyung In YANG ; Chang Woon CHOI ; Dong Soo LEE ; June Key CHUNG ; Myung Chul LEE ; Chang Soon KOH
Korean Journal of Nuclear Medicine 1992;26(2):400-410
No abstract available.
Kidney*
;
Perfusion*
;
Radionuclide Imaging*
3.Epithelioid Trophoblastic Tumor in a Postmenopausal Woman: A Case Report.
Journal of Menopausal Medicine 2016;22(1):50-53
Epithelioid trophoblastic tumor (ETT) is a rare gestational trophoblastic neoplasm composed of intermediate trophoblasts. Most cases of ETT are reported in women of reproductive age following a prior gestation within 2 weeks to 30 years. ETT is extremely rare in postmenopausal women. It is commonly misdiagnosed as a poorly differentiated carcinoma or another type of gestational trophoblastic tumor. We report a case of ETT in a 56-year-old woman that developed 23 years after the patient's last pregnancy.
Female
;
Gestational Trophoblastic Disease
;
Humans
;
Middle Aged
;
Postmenopause
;
Pregnancy
;
Trophoblastic Neoplasms*
;
Trophoblasts*
;
Uterus
4.Postmenopausal Meigs' Syndrome in Elevated CA-125: A Case Report.
Journal of Menopausal Medicine 2015;21(1):56-59
Meigs' syndrome is a benign ovarian tumor associated with ascites and pleural effusion. Elevated cancer antigen 125 (CA-125) in Meigs' syndrome is an unusual clinical condition reported in few cases. We report here on a 61-year-old woman who presented with dyspnea; in imaging assessment, a heterogeneous pelvic mass measuring 12 x 11 cm with ascitic fluid was reported. Pleural effusion was detected on Chest X-ray. Aspiration of pleural fluid showed no evidence of malignancy. CA-125 level was 347 IU/mL. The patient underwent laparotomy during which a mass measuring 12 x 11 cm was detected in her left adnexa. Histology showed ovarian thecoma. The mass was resected, and, after that, the symptoms disappeared and CA-125 level reached 19 IU/mL. The patient had experienced no problem after 12 months of follow up. Although postmenopausal women with ovarian tumor, ascites, pleural effusion, and elevation of CA-125 levels probably have malignant ovarian tumors, Meigs' syndrome must be considered in the differential diagnosis.
Ascites
;
Ascitic Fluid
;
Diagnosis, Differential
;
Dyspnea
;
Female
;
Follow-Up Studies
;
Humans
;
Laparotomy
;
Meigs Syndrome*
;
Middle Aged
;
Pleural Effusion
;
Thecoma
;
Thorax
5.Factors Associated with Operation Time of Laparoscopic Gastric Wedge Resection for Gastric Subepithelial Tumors
Dong-Hyeon OH ; Yong-Eun PARK ; Sang-Woon KIM ; Jung-Min BAE
Journal of Minimally Invasive Surgery 2020;23(3):139-143
Purpose:
Gastric subepithelial tumor (GST) is a disease entity that includes all gastric subepithelial lesions. The oncologically safe surgical technique is complete resection with adequate resection margins. Most of the studies about laparoscopic gastric wedge rsection (LGWR) in GST focus on oncologic curability or surgical effectiveness. However, studies on the factors associated with the operation time are rare. Therefore, this study was conducted to analyze and compare the factors associated with the operation time of LGWR.
Methods:
From 2010 to 2019, 145 consecutive patients undergoing LGWR were reviewed retrospectively. Clinical characteristics of GST and operation time were analyzed and compared.
Results:
A total of 145 patients was enrolled and reviewed. There were 59 males (40.7%) and 86 females (59.3%) with a mean age of 53.6 years and mean body mass index (BMI) of 23.9 kg/m 2 . Mean tumor size was 2.9 cm and mean operation time was 66.0 minutes. In statistically, the mean operation time showed significant association with tumor size, BMI, longitudinal tumor location and tumor location between lesser and greater curvature. In multivariate analysis, tumor size, BMI and longitudinal classification of tumor location are statistically significant.
Conclusion
A shorter operation time is expected when there is a small tumor, low BMI and mid portion of the stomach GST. Preoperative evaluation for tumor size and body weight is important. In patients with large GST, obesity and both end stomach GST, we think that pre-operative preparation for long operation time should be considered.
6.Effects of Diospyros kaki peel, Momordica charantia, and Canavalia gladiata extracts on the cariogenic traits of Streptococcus mutans
Dong Woon KIM ; Dong Ik LEE ; Sang Uk IM ; Youn Hee CHOI ; Keun Bae SONG
Journal of Korean Academy of Oral Health 2019;43(3):131-135
OBJECTIVES: The purpose of this study is to determine methods of dental caries prevention by investigating the use of compounds of Diospyros kaki (D. kaki) peel, Momordica charantia (M. charantia), and Canavalia gladiata (C. gladiata) extracts to limit the cariogenic traits of Streptococcus mutans (S. mutans), such as their ability to proliferate and adhere to the tooth surface. METHODS: Broth microdilution and the agar spreading assay were used to determine the antimicrobial effect and minimum inhibitory concentration (MIC) of S. mutans extracts. In order to identify the adhesive ability of S. mutans at varying concentrations, culture plates were first stained with 1 ml of 0.01% crystal violet for 15 minutes at room temperature, and then eluted with 1 ml of EtOH:Acetone (8:2) solution for 15 minutes in a 37℃ incubator. Eluted solutions were then evaluated by use of a spectrophotometer at 575 nm. RESULTS: Experiments were conducted in order to investigate the effectiveness of D. kaki peel, M. charantia, and C. gladiata extracts on limiting the proliferation of S. mutans. The MIC was measured as an indication of whether the antibacterial activity of D. kaki peel, M. charantia, and C. gladiata extracts had a significant bacteriostatic effect on S. mutans. M. charantia extract was effective for growth inhibition on S. mutans at a minimum concentration of 0.25%. From the adhesion ability assay, M. charantia extract had an anti-adhesive effect. CONCLUSIONS: These results indicate that M. charantia extract demonstrates antibacterial activity and has an anti-adhesive effect on S. mutans. Due to these properties, M. charantia extract may be used to prevent dental caries.
Adhesives
;
Agar
;
Canavalia
;
Dental Caries
;
Diospyros
;
Gentian Violet
;
Incubators
;
Microbial Sensitivity Tests
;
Momordica charantia
;
Momordica
;
Streptococcus mutans
;
Streptococcus
;
Thiram
;
Tooth
7.Captopril 99mTc-DTPA renal scintigraphy in diagnosis of renovascular hypertension.
Hyung In YANG ; Dong Soo LEE ; Sung Chul KIM ; Sang Kyun BAE ; Chang Woon CHOI ; June Key CHUNG ; Suhnggwon KIM ; Myung Chul LEE ; Jung Sang LEE ; Chang Soon KOH
Korean Journal of Nuclear Medicine 1992;26(2):312-317
No abstract available.
Captopril*
;
Diagnosis*
;
Hypertension, Renovascular*
;
Radionuclide Imaging*
8.Optimal Time Interval of Rocuronium Pretreatment for Prevention of Biochemical Changes, Fasciculations and Myalgia Following Succinylcholine Administration.
Seong Bae KIM ; Jae Hwan KIM ; Woon Young KIM ; Moon Seok CHANG ; Hee Dong YOON ; Young Cheol PARK
Korean Journal of Anesthesiology 2002;42(5):587-593
BACKGROUND: The purpose of this study was to assess the optimal time interval between rocuronium pretreatment and succinylcholine for prevention of the rise in serum potassium and creatine kinase concentrations and the increased incidence of fasciculations and myalgia following succinylcholine administration. METHODS: We have studied 60 patients undergoing a minor elective surgery, in a prospective double blinded method. Three groups of 20 patients each were pretreated with saline 2 ml (Group C), 0.05 mg/kg rocuronium one min before (Group R1) or 3 min before (Group R3) 1.5 mg/kg succinylcholine administration. Serum potassium and creatine kinase were respectively measured 5 min after succinylcholine and 24 h after the operation. Fasciculations and myalgia on postoperative day 1 and day 2 were evaluated. RESULTS: The increase in the serum potassium concentration was not attenuated in any group. The increase in creatine kinase concentration, the incidence of fasciculations and the incidence of myalgia on postoperative day 1 and day 2 were highest in Group C; however, there was no difference between the Group R1 and R3. CONCLUSIONS: Either a 1 min or 3 min pretreatment time interval of the rocuronium has a similar effect on the prevention of the rise in serum potassium and creatine kinase concentrations and an increased incidence of fasciculations and myalgia following succinylcholine administration.
Creatine Kinase
;
Fasciculation*
;
Humans
;
Incidence
;
Myalgia*
;
Potassium
;
Prospective Studies
;
Succinylcholine*
10.Uterine Lipoleiomyoma in Peri or Postmenopausal Women.
So Ra OH ; Yeon Jean CHO ; Myoungseok HAN ; Jong Woon BAE ; Jung Woo PARK ; Seo Hee RHA
Journal of Menopausal Medicine 2015;21(3):165-170
Lipoleiomyoma is an uncommon neoplasm of the uterus, composed of smooth muscles intermixed with mature adipocytes. These tumors are considered a benign variant of uterine leiomyomas. Herein, we report six cases of lipoleiomyoma experienced in our institution from January 2005 to March 2015. The patients ranged in age from 45 to 70 years; the etiology may be related to estrogen deficiency occurring after menopausal transition. Except for one lipoleiomyoma in the broad ligament, all others were found in the uterine corpus. The presenting symptoms were nonspecific, and most cases were incidentally diagnosed during surgery for other reasons. We performed preoperative imaging studies, including abdominal and pelvic computed tomography and magnetic resonance imaging. Preoperatively, four patients were diagnosed as having a pelvic mass and one patient was diagnosed as having a right ovarian mature teratoma. In one case, we found a gynecologic malignancy (cervical cancer 1A1). Histologically, there was no gross or microscopic contiguity between the lipoleiomyoma and the malignancy. Lipoleiomyomas seem to have a benign clinical course. In our study, there were no recurrences of or deaths attributed to the lipoleiomyomas during a mean follow-up period of 16.17 +/- 23.80 months.
Adipocytes
;
Broad Ligament
;
Estrogens
;
Female
;
Follow-Up Studies
;
Humans
;
Leiomyoma
;
Magnetic Resonance Imaging
;
Muscle, Smooth
;
Myofibroma
;
Perimenopause
;
Postmenopause
;
Recurrence
;
Teratoma
;
Uterus