1.Helicobacter pylori Isolation and Antibiotic Susceptibility Testing Using Rapidly Frozen Biopsy Samples
Kee Don CHOI ; Jung Mogg KIM ; Gwang Ho BAIK ; Jun Chul PARK ; Hye-Kyung JUNG ; Han Seung RYU ; Soo-Jeong CHO ; Cheol Min SHIN ; Hwoon-Yong JUNG ;
The Korean Journal of Helicobacter and Upper Gastrointestinal Research 2024;24(4):360-364
Objectives:
To involve institutions without the ability to perform susceptibility testing, long-term storage of tissue sample is critical to isolate the bacteria in a central laboratory. The aim of the study was to investigate the feasibility of H. pylori isolation and antibiotic susceptibility testing using rapidly frozen biopsy specimens collected from various institutions.
Methods:
Eight institutions located in various regions of Korea participated in the study. Patients requiring upper endoscopy and H. pylori testing were screened. Two biopsy samples were taken from the stomach. One was placed in a sterile Eppendorf tube and then immediately placed in a vacuum bottle containing dry ice, which was stored at -80°C. The other was used in a rapid urease test. Collected samples were delivered to a central laboratory. The bacteria were isolated from the frozen samples under microaerophilic conditions. The agar dilution method was used to determine the minimum inhibitory concentration (MIC) of amoxicillin, clarithromycin, metronidazole, tetracycline, ciprofloxacin, and levofloxacin for each H. pylori isolate.
Results:
Patients with a positive rapid urease test result (n=113) were enrolled. The mean age was 56.6±12.3 years. The male:female ratio was 64:49. The overall culture success rate was 77.0% (87/113). MIC values were determined using isolated 87 H. pylori strains. Rates of resistance to amoxicillin, clarithromycin, metronidazole, tetracycline, levofloxacin, and ciprofloxacin were 23.0%, 25.3%, 28.7%, 1.1%, 33.3%, and 34.5%, respectively.
Conclusions
It is feasible to perform H. pylori isolation and antimicrobial susceptibility testing using rapidly frozen and transported biopsy specimens.
2.Helicobacter pylori Isolation and Antibiotic Susceptibility Testing Using Rapidly Frozen Biopsy Samples
Kee Don CHOI ; Jung Mogg KIM ; Gwang Ho BAIK ; Jun Chul PARK ; Hye-Kyung JUNG ; Han Seung RYU ; Soo-Jeong CHO ; Cheol Min SHIN ; Hwoon-Yong JUNG ;
The Korean Journal of Helicobacter and Upper Gastrointestinal Research 2024;24(4):360-364
Objectives:
To involve institutions without the ability to perform susceptibility testing, long-term storage of tissue sample is critical to isolate the bacteria in a central laboratory. The aim of the study was to investigate the feasibility of H. pylori isolation and antibiotic susceptibility testing using rapidly frozen biopsy specimens collected from various institutions.
Methods:
Eight institutions located in various regions of Korea participated in the study. Patients requiring upper endoscopy and H. pylori testing were screened. Two biopsy samples were taken from the stomach. One was placed in a sterile Eppendorf tube and then immediately placed in a vacuum bottle containing dry ice, which was stored at -80°C. The other was used in a rapid urease test. Collected samples were delivered to a central laboratory. The bacteria were isolated from the frozen samples under microaerophilic conditions. The agar dilution method was used to determine the minimum inhibitory concentration (MIC) of amoxicillin, clarithromycin, metronidazole, tetracycline, ciprofloxacin, and levofloxacin for each H. pylori isolate.
Results:
Patients with a positive rapid urease test result (n=113) were enrolled. The mean age was 56.6±12.3 years. The male:female ratio was 64:49. The overall culture success rate was 77.0% (87/113). MIC values were determined using isolated 87 H. pylori strains. Rates of resistance to amoxicillin, clarithromycin, metronidazole, tetracycline, levofloxacin, and ciprofloxacin were 23.0%, 25.3%, 28.7%, 1.1%, 33.3%, and 34.5%, respectively.
Conclusions
It is feasible to perform H. pylori isolation and antimicrobial susceptibility testing using rapidly frozen and transported biopsy specimens.
3.Helicobacter pylori Isolation and Antibiotic Susceptibility Testing Using Rapidly Frozen Biopsy Samples
Kee Don CHOI ; Jung Mogg KIM ; Gwang Ho BAIK ; Jun Chul PARK ; Hye-Kyung JUNG ; Han Seung RYU ; Soo-Jeong CHO ; Cheol Min SHIN ; Hwoon-Yong JUNG ;
The Korean Journal of Helicobacter and Upper Gastrointestinal Research 2024;24(4):360-364
Objectives:
To involve institutions without the ability to perform susceptibility testing, long-term storage of tissue sample is critical to isolate the bacteria in a central laboratory. The aim of the study was to investigate the feasibility of H. pylori isolation and antibiotic susceptibility testing using rapidly frozen biopsy specimens collected from various institutions.
Methods:
Eight institutions located in various regions of Korea participated in the study. Patients requiring upper endoscopy and H. pylori testing were screened. Two biopsy samples were taken from the stomach. One was placed in a sterile Eppendorf tube and then immediately placed in a vacuum bottle containing dry ice, which was stored at -80°C. The other was used in a rapid urease test. Collected samples were delivered to a central laboratory. The bacteria were isolated from the frozen samples under microaerophilic conditions. The agar dilution method was used to determine the minimum inhibitory concentration (MIC) of amoxicillin, clarithromycin, metronidazole, tetracycline, ciprofloxacin, and levofloxacin for each H. pylori isolate.
Results:
Patients with a positive rapid urease test result (n=113) were enrolled. The mean age was 56.6±12.3 years. The male:female ratio was 64:49. The overall culture success rate was 77.0% (87/113). MIC values were determined using isolated 87 H. pylori strains. Rates of resistance to amoxicillin, clarithromycin, metronidazole, tetracycline, levofloxacin, and ciprofloxacin were 23.0%, 25.3%, 28.7%, 1.1%, 33.3%, and 34.5%, respectively.
Conclusions
It is feasible to perform H. pylori isolation and antimicrobial susceptibility testing using rapidly frozen and transported biopsy specimens.
4.Helicobacter pylori Isolation and Antibiotic Susceptibility Testing Using Rapidly Frozen Biopsy Samples
Kee Don CHOI ; Jung Mogg KIM ; Gwang Ho BAIK ; Jun Chul PARK ; Hye-Kyung JUNG ; Han Seung RYU ; Soo-Jeong CHO ; Cheol Min SHIN ; Hwoon-Yong JUNG ;
The Korean Journal of Helicobacter and Upper Gastrointestinal Research 2024;24(4):360-364
Objectives:
To involve institutions without the ability to perform susceptibility testing, long-term storage of tissue sample is critical to isolate the bacteria in a central laboratory. The aim of the study was to investigate the feasibility of H. pylori isolation and antibiotic susceptibility testing using rapidly frozen biopsy specimens collected from various institutions.
Methods:
Eight institutions located in various regions of Korea participated in the study. Patients requiring upper endoscopy and H. pylori testing were screened. Two biopsy samples were taken from the stomach. One was placed in a sterile Eppendorf tube and then immediately placed in a vacuum bottle containing dry ice, which was stored at -80°C. The other was used in a rapid urease test. Collected samples were delivered to a central laboratory. The bacteria were isolated from the frozen samples under microaerophilic conditions. The agar dilution method was used to determine the minimum inhibitory concentration (MIC) of amoxicillin, clarithromycin, metronidazole, tetracycline, ciprofloxacin, and levofloxacin for each H. pylori isolate.
Results:
Patients with a positive rapid urease test result (n=113) were enrolled. The mean age was 56.6±12.3 years. The male:female ratio was 64:49. The overall culture success rate was 77.0% (87/113). MIC values were determined using isolated 87 H. pylori strains. Rates of resistance to amoxicillin, clarithromycin, metronidazole, tetracycline, levofloxacin, and ciprofloxacin were 23.0%, 25.3%, 28.7%, 1.1%, 33.3%, and 34.5%, respectively.
Conclusions
It is feasible to perform H. pylori isolation and antimicrobial susceptibility testing using rapidly frozen and transported biopsy specimens.
5.Helicobacter pylori Isolation and Antibiotic Susceptibility Testing Using Rapidly Frozen Biopsy Samples
Kee Don CHOI ; Jung Mogg KIM ; Gwang Ho BAIK ; Jun Chul PARK ; Hye-Kyung JUNG ; Han Seung RYU ; Soo-Jeong CHO ; Cheol Min SHIN ; Hwoon-Yong JUNG ;
The Korean Journal of Helicobacter and Upper Gastrointestinal Research 2024;24(4):360-364
Objectives:
To involve institutions without the ability to perform susceptibility testing, long-term storage of tissue sample is critical to isolate the bacteria in a central laboratory. The aim of the study was to investigate the feasibility of H. pylori isolation and antibiotic susceptibility testing using rapidly frozen biopsy specimens collected from various institutions.
Methods:
Eight institutions located in various regions of Korea participated in the study. Patients requiring upper endoscopy and H. pylori testing were screened. Two biopsy samples were taken from the stomach. One was placed in a sterile Eppendorf tube and then immediately placed in a vacuum bottle containing dry ice, which was stored at -80°C. The other was used in a rapid urease test. Collected samples were delivered to a central laboratory. The bacteria were isolated from the frozen samples under microaerophilic conditions. The agar dilution method was used to determine the minimum inhibitory concentration (MIC) of amoxicillin, clarithromycin, metronidazole, tetracycline, ciprofloxacin, and levofloxacin for each H. pylori isolate.
Results:
Patients with a positive rapid urease test result (n=113) were enrolled. The mean age was 56.6±12.3 years. The male:female ratio was 64:49. The overall culture success rate was 77.0% (87/113). MIC values were determined using isolated 87 H. pylori strains. Rates of resistance to amoxicillin, clarithromycin, metronidazole, tetracycline, levofloxacin, and ciprofloxacin were 23.0%, 25.3%, 28.7%, 1.1%, 33.3%, and 34.5%, respectively.
Conclusions
It is feasible to perform H. pylori isolation and antimicrobial susceptibility testing using rapidly frozen and transported biopsy specimens.
6.Primary peritoneal serous papillary carcinoma presenting as a large mesenteric mass mistaken for ovarian cancer: a case of primary peritoneal carcinoma.
Ji Woo KIM ; Hwa Sun LEE ; Kyu Sik SHIN ; Young Ho GAM ; Kyung Don BAIK
Obstetrics & Gynecology Science 2015;58(3):246-250
Peritoneal origin serous papillary carcinoma is an uncommon primary malignancy occurring in the abdominal or pelvic peritoneum lining. It is characterized by peritoneal carcinomatosis with massive ascites, uninvolved or minimally involved ovary, and is histologically indistinguishable from ovarian serous tumors. Better recognition of this phenomenon in recent years has contributed to an increasing diagnostic frequency. We describe a rare case of peritoneal origin serous papillary carcinoma with unusual clinical presentations involving a solitary primary tumor originating from the peritoneal lining of the sigmoid colonal mesentery, without pelvic lymph node involvement or distant metastasis. Because of the location and morphological similarity, it was misdiagnosed as an ovarian malignancy. We aim to assist in the diagnosis of this disease with the following case report, thereby improving the management of patients with this condition.
Ascites
;
Carcinoma
;
Carcinoma, Papillary*
;
Colon, Sigmoid
;
Diagnosis
;
Female
;
Humans
;
Lymph Nodes
;
Mesentery
;
Neoplasm Metastasis
;
Ovarian Neoplasms*
;
Ovary
;
Peritoneum
7.A Promoter SNP (rs1800682, -670C/T) of FAS Is Associated with Stroke in a Korean Population.
Sung Wook KANG ; Joo Ho CHUNG ; Dong Hwan KIM ; Dong Hwan YUN ; Seung Don YOO ; Hee Sang KIM ; Wan SEO ; Jee Sang YOON ; Hyung Hwan BAIK
Genomics & Informatics 2010;8(4):206-211
The Fas (TNF receptor superfamily, member 6) (FAS)/FAS ligand (FASLG) interaction plays a central role in the regulation of programmed cell death. FAS and FASLG polymorphisms in promoter regions affect transcriptional activities. To investigate whether FAS and FASLG polymorphisms are associated with the development and clinical phenotypes of stroke, 2 promoter single nucleotide polymorphisms (SNPs) in FAS (rs1800682, -670C/T) and FASLG (rs763110, -844C/T) were selected and genotyped by direct sequencing in 220 stroke patients [107 ischemic stroke (IS), 77 intracerebral hemorrhage (ICH), and 36 subarachnoid hemorrhage (SAH)] and 369 control subjects. For the analysis of clinical symptoms, all stroke patients were divided into 3 clinical phenotypes according to the respective results of the National Institutes of Health Stroke Survey (NIHSS) and the Modified Barthel Index (MBI) and the presence or absence of complex regional pain syndrome (CRPS). The SNPStats, SNPAnalyzer, and Helixtree programs were used to analyze the genetic data. Multiple logistic regression models (codominant, dominant, and recessive) were used to estimate odds ratios (ORs), 95% confidence intervals (CIs), and p-values. The promoter SNP rs1800682 was associated with stroke in the codominant (OR=0.48, 95% CI=0.25-0.94, p=0.04) and dominant models (OR=0.51, 95% CI=0.30-0.87, p=0.011). However, a FASLG SNP (rs763110) was not in Hardy-Weinberg equilibrium (p<0.05). In the analysis of stroke types, rs1800682 was associated with IS in the codominant (OR=0.30, 95% CI=0.12-0.74, p=0.025), dominant (OR=0.44, 95% CI=0.23-0.88, p=0.018), and recessive models (OR=0.45, 95% CI=0.21-0.99, p=0.042). The genotype frequencies of rs1800682 were different between ICH and controls in the dominant model (OR=0.49, 95% CI=0.26-0.94, p=0.031) but not between SAH and controls. In the analysis of clinical symptoms, however, rs1800682 was not related to the 3 clinical phenotypes (NIHSS, MBI, and CRPS). These results suggest that a promoter SNP (rs1800682, -670C/T) in FAS may be associated with the development of stroke in the Korean population.
Cell Death
;
Cerebral Hemorrhage
;
Genotype
;
Humans
;
Logistic Models
;
National Institutes of Health (U.S.)
;
Odds Ratio
;
Phenotype
;
Polymorphism, Single Nucleotide
;
Promoter Regions, Genetic
;
Stroke
;
Subarachnoid Hemorrhage
8.An analysis of HPV subtype in the uterine cervix and clinical usefulness of HPV DNA chip test.
Soon Ho CHOI ; Kyung Don BAIK ; Su Il LEE
Korean Journal of Obstetrics and Gynecology 2007;50(3):465-475
OBJECTIVE: Human papillomavirus (HPV) has been identified more than 100 HPV subtypes. The distributions of subtypes are different according to nations and regions. We analysed subtype of infection with HPV among women who live in Pusan and surburbs of Pusan. We accessed the clinical usefulness of HPV DNA chip test as a supplementary method of Pap smear in the evaluation of cervical lesion. METHOD: This study was undertaken from January 2002 to January 2005 and the samples were collected from the patients who had abnormal Pap smear. We analysed subtypes of 143 positive cases with HPV DNA chip (Biomedlab) test and estimated pathologic reports of 115 patients except 28 patients who had not biopsy. We investigated pathologic results of 54 of 115 patients who had atypical squamous cells / low grade squamous intraepithelial lesion (ASC/LSIL) in Pap smear and examined high risk HPV in 54 pathologic results. RESULTS: The prevalence of HPV subtypes was 42 cases of HPV-16, 20 cases of HPV- 58, 16 cases of HPV-52, 10 cases of HPV-35, 9 cases of HPV-56, 7 cases of HPV-51, 6 cases of HPV-18 in descending order of incidence in high risk HPV group and 3 cases of HPV-6, 3 cases of HPV-42, 2 cases of HPV-34, 2 cases of HPV-43 in descending order of incidence in low risk HPV group. The results of HPV DNA chip test and 115 pathologic reports were estimated by comparative study. A pure infection with low risk HPV group was detected in low grade lesion. Infection with high risk HPV group was also detected in low grade lesion but was mainly detected in high grade lesion. The pathologic results of 54 patients who had ASC / LSIL in Pap smear were 13 patients had above high grade lesion include 2 cases of invasive carcinoma so false negative rate of Pap smear in the detection of high grade lesion was 24%. CONCLUSION: HPV subtypes were detected HPV 16, 58, 52, 35, 56, 51, 18 types in descending order of incidence and prevalence. Mass study and integrated data from larger population and various regions in many hospitals will be needed. And the supplementary use of HPV DNA chip test may provide clinical usefulness because it can reduce the false negative rate of Pap smear and improve the positive predictive value in the detection of high grade cervical lesion and it enables to decrease the incidence of cervical cancer.
Biopsy
;
Busan
;
Cervix Uteri*
;
DNA*
;
Female
;
Human papillomavirus 16
;
Human papillomavirus 18
;
Human papillomavirus 6
;
Humans
;
Incidence
;
Oligonucleotide Array Sequence Analysis*
;
Prevalence
;
Uterine Cervical Neoplasms
9.A Case of Post-total hysterectomy with bilat. salpingooophorectomy Retroperitoneal Endometrial Stromal Sarcoma.
Sung Wook KIM ; Soon Ho CHOI ; Sang Ki LEE ; Jong Jin LEE ; Min Jung KIM ; Tae Young KIM ; Kyung Don BAIK ; Hyun I SON
Korean Journal of Obstetrics and Gynecology 2006;49(8):1803-1808
Endometrial stromal sarcoma (ESS) is a relatively rare form of uterine sarcoma. Endometrial stromal sarcoma (ESS) of the myometrium compose just 0.2% of uterine malignant tumors. Low-grade stromal sarcoma has extended beyond the uterus in 40% of cases at the time of diagnosis, but the extra-uterine spread is confined to the pelvis in two thirds of the cases. A few cases of extra-uterine endometrial stromal sarcoma have been reported in literature concerning the ovary and pelvis. We have experienced a Post-total hysterectomy with bilateral salpingooophorectomy retroperitoneal endometrial stromal sarcoma, so we report this case with a brief review of literature.
Animals
;
Diagnosis
;
Female
;
Hysterectomy*
;
Mice
;
Myometrium
;
Ovary
;
Pelvis
;
Sarcoma
;
Sarcoma, Endometrial Stromal*
;
Uterus
10.A Study of correlation of fetal and maternal serum interleukin-1beta and interleukin-6 with histologic placental inflammation.
Won Suk CHOI ; Sung Wook KIM ; Sun Ho CHOI ; Sang Ki LEE ; Min Jung KIM ; Tae Young KIM ; Kyung Don BAIK
Korean Journal of Obstetrics and Gynecology 2005;48(12):2828-2834
OBJECTIVE: This study was to determine if placental histologic acute inflammation is related to maternal and fetal serum cytokine levels in preterm labor. METHODS: In 2003-2004, 32 consecutive patients at 20-36 weeks with progressive labor and tocolytic failure were recruited. Maternal serum sampled during the labor, and fetal serum of umbilical vein were assayed by ELISA for levels of soluble interleukin-1beta and interleukin-6. Acute placental inflammation was scored by two groups blinded to clinical data, and the average scores analyzed for relationships to serum cytokine levels. RESULTS: Fetal level of interleukin-1beta was higher with grade 3-4 acute amnionitis than with grade 0-2 (p=0.022 and p=0.023). Fetal levels of both cytokine were higher in grade 3-4 umbilical vasculitis (interleukin-1beta p=0.008 and interleukin-6 p=0.03). In contrast, maternal serum interleukin levels were not associated with presence or severity of histologic evidence of acute placental inflammation. CONCLUSION: We conclude that fetal serum, but not maternal serum interleukin levels, was correlated with histologic evidence of acute placental inflammation. This result may be used to detect acute placental inflammation as an indirect indicator.
Amnion
;
Chorioamnionitis
;
Enzyme-Linked Immunosorbent Assay
;
Female
;
Humans
;
Inflammation*
;
Interleukin-1beta*
;
Interleukin-6*
;
Interleukins
;
Obstetric Labor, Premature
;
Pregnancy
;
Umbilical Veins
;
Vasculitis

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