1.Osteoporosis Is Associated with an Increased Risk of Colorectal Adenoma and High-Risk Adenoma: A Retrospective, Multicenter, Cross-Sectional, Case-Control Study
Ji Hyung NAM ; Myung KOH ; Hyoun Woo KANG ; Kum Hei RYU ; Dong Seok LEE ; Su Hwan KIM ; Dong Kee JANG ; Ji Bong JEONG ; Ji Won KIM ; Kook Lae LEE ; Dong Jun OH ; Yun Jeong LIM ; Seong-Joon KOH ; Jong Pil IM ; Joo Sung KIM
Gut and Liver 2022;16(2):269-276
		                        		
		                        			 Background/Aims:
		                        			The protective effects of vitamin D and calcium on colorectal neoplasms are known. Bone mineral density (BMD) may be a reliable biomarker that reflects the long-term anticancer effect of vitamin D and calcium. This study aimed to evaluate the association between BMD and colorectal adenomas including high-risk adenoma. 
		                        		
		                        			Methods:
		                        			A multicenter, cross-sectional, case-control study was conducted among participants with average risk of colorectal cancer who underwent BMD and screening colonoscopy between 2015 and 2019. The main outcome was the detection of colorectal neoplasms. The variable under consideration was low BMD (osteopenia/osteoporosis). The logistic regression model included baseline demographics, components of metabolic syndrome, fatty liver disease status, and aspirin and multivitamin use. 
		                        		
		                        			Results:
		                        			A total of 2,109 subjects were enrolled. The mean age was 52.1±10.8 years and 42.6% were male. The adenoma detection rate was 43%. Colorectal adenoma and high-risk adenoma were both more prevalent in subjects with low BMD than those with normal BMD (48.2% vs 38.8% and 12.1% vs 9.1%). In the univariate analysis, old age, male sex, smoking, metabolic components, fatty liver, and osteoporosis were significantly associated with the risk of adenoma and high-risk adenoma. In the multivariate analysis, osteoporosis was independently associated with risk of colorectal adenoma (odds ratio [OR], 1.65; 95% confidence interval [CI], 1.11 to 2.46; p=0.014) and high-risk adenoma (OR, 1.94; 95% CI, 1.14 to 3.29; p=0.014). 
		                        		
		                        			Conclusions
		                        			Osteoporosis is an independent risk factor of colorectal adenoma and high-risk adenoma 
		                        		
		                        		
		                        		
		                        	
2.Antifungal effects of synthetic human β-defensin 3-C15 peptide.
Sang Min LIM ; Ki Bum AHN ; Christine KIM ; Jong Won KUM ; Hiran PERINPANAYAGAM ; Yu GU ; Yeon Jee YOO ; Seok Woo CHANG ; Seung Hyun HAN ; Won Jun SHON ; Woocheol LEE ; Seung Ho BAEK ; Qiang ZHU ; Kee Yeon KUM
Restorative Dentistry & Endodontics 2016;41(2):91-97
		                        		
		                        			
		                        			OBJECTIVES: The purpose of this ex vivo study was to compare the antifungal activity of a synthetic peptide consisting of 15 amino acids at the C-terminus of human β-defensin 3 (HBD3-C15) with calcium hydroxide (CH) and Nystatin (Nys) against Candida albicans (C. albicans) biofilm. MATERIALS AND METHODS: C. albicans were grown on cover glass bottom dishes or human dentin disks for 48 hr, and then treated with HBD3-C15 (0, 12.5, 25, 50, 100, 150, 200, and 300 µg/mL), CH (100 µg/mL), and Nys (20 µg/mL) for 7 days at 37℃. On cover glass, live and dead cells in the biomass were measured by the FilmTracer Biofilm viability assay, and observed by confocal laser scanning microscopy (CLSM). On dentin, normal, diminished and ruptured cells were observed by field-emission scanning electron microscopy (FE-SEM). The results were subjected to a two-tailed t-test, a one way analysis variance and a post hoc test at a significance level of p = 0.05. RESULTS: C. albicans survival on dentin was inhibited by HBD3-C15 in a dose-dependent manner. There were fewer aggregations of C. albicans in the groups of Nys and HBD3-C15 (≥ 100 µg/mL). CLSM showed C. albicans survival was reduced by HBD3-C15 in a dose dependent manner. Nys and HBD3-C15 (≥ 100 µg/mL) showed significant fungicidal activity compared to CH group (p < 0.05). CONCLUSIONS: Synthetic HBD3-C15 peptide (≥ 100 µg/mL) and Nys exhibited significantly higher antifungal activity than CH against C. albicans by inhibiting cell survival and biofilm.
		                        		
		                        		
		                        		
		                        			Amino Acids
		                        			;
		                        		
		                        			Biofilms
		                        			;
		                        		
		                        			Biomass
		                        			;
		                        		
		                        			Calcium Hydroxide
		                        			;
		                        		
		                        			Candida albicans
		                        			;
		                        		
		                        			Cell Survival
		                        			;
		                        		
		                        			Dentin
		                        			;
		                        		
		                        			Glass
		                        			;
		                        		
		                        			Humans*
		                        			;
		                        		
		                        			Microscopy, Confocal
		                        			;
		                        		
		                        			Microscopy, Electron, Scanning
		                        			;
		                        		
		                        			Nystatin
		                        			
		                        		
		                        	
3.A Novel F45S SOD1 Mutation in Amyotrophic Lateral Sclerosis Coexisting with Bullous Pemphigoid.
Seong Il OH ; Jeong Ho HONG ; Byung Woo CHOI ; Ki Wook OH ; Chan Kum PARK ; Min Jung KWON ; Chang Seok KI ; Joo Yeon KO ; Seung Hyun KIM
Journal of Clinical Neurology 2015;11(4):390-394
		                        		
		                        			
		                        			BACKGROUND: The coexistence of an autoimmune disease and amyotrophic lateral sclerosis (ALS) has led to the hypothesis that immune-mediated pathological mechanisms are overlapping in the two diseases. We report herein a rare coexistence of bullous pemphigoid (BP) in a novel mutation (F45S) of the gene encoding Cu/Zn superoxide dismutase (SOD1) in an ALS patient, and discuss a role for the SOD1 mutation in this unusual overlap. CASE REPORT: A 57-year-old male with familial ALS, including vesicles and tense bullae on erythematous bases, was diagnosed with BP. Direct immunofluorescence revealed deposits of C3 and immunoglobulin G in the basement membrane zone. Direct sequencing of SOD1 in the patient revealed a novel mutation (c.137T>C; F45S). CONCLUSIONS: We report a novel SOD1 mutation in ALS, which was combined with BP. This novel SOD1 mutation could affect the phenotype of a combined autoimmune disease and matrix metalloproteinase-9. There may therefore be common factors linking BP and ALS with the SOD1 mutation.
		                        		
		                        		
		                        		
		                        			Amyotrophic Lateral Sclerosis*
		                        			;
		                        		
		                        			Autoimmune Diseases
		                        			;
		                        		
		                        			Autoimmunity
		                        			;
		                        		
		                        			Basement Membrane
		                        			;
		                        		
		                        			Fluorescent Antibody Technique, Direct
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Immunoglobulin G
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Matrix Metalloproteinase 9
		                        			;
		                        		
		                        			Middle Aged
		                        			;
		                        		
		                        			Pemphigoid, Bullous*
		                        			;
		                        		
		                        			Phenotype
		                        			;
		                        		
		                        			Superoxide Dismutase
		                        			;
		                        		
		                        			Transcutaneous Electric Nerve Stimulation
		                        			
		                        		
		                        	
4.Outcomes of stereotactic body radiotherapy for unresectable primary or recurrent cholangiocarcinoma.
Da Hoon JUNG ; Mi Sook KIM ; Chul Koo CHO ; Hyung Jun YOO ; Won Il JANG ; Young Seok SEO ; Eun Kyung PAIK ; Kum Bae KIM ; Chul Ju HAN ; Sang Bum KIM
Radiation Oncology Journal 2014;32(3):163-169
		                        		
		                        			
		                        			PURPOSE: To report the results of stereotactic body radiotherapy (SBRT) for unresectable primary or recurrent cholangiocarcinoma. MATERIALS AND METHODS: From January 2005 through August 2013, 58 patients with unresectable primary (n = 28) or recurrent (n = 30) cholangiocarcinoma treated by SBRT were retrospectively analyzed. The median prescribed dose was 45 Gy in 3 fractions (range, 15 to 60 Gy in 1-5 fractions). Patients were treated by SBRT only (n = 53) or EBRT + SBRT boost (n = 5). The median tumor volume was 40 mL (range, 5 to 1,287 mL). RESULTS: The median follow-up duration was 10 months (range, 1 to 97 months). The 1-year, 2-year overall survival rates, and median survival were 45%, 20%, and 10 months, respectively. The median survival for primary group and recurrent group were 5 and 13 months, respectively. Local control rate at 1-year and 2-year were 85% and 72%, respectively. Disease progression-free survival rates at 1-year and 2-year were 26% and 23%, respectively. In univariate analysis, ECOG performance score (0-1 vs. 2-3), treatment volume (<50 vs. > or =50 mL), and pre-SBRT CEA level (<5 vs. > or =5 ng/mL) were significant in overall survival rate. In multivariate analysis, ECOG score (p = 0.037) and tumor volume (p = 0.030) were statistically significant. In the recurrent tumor group, patients with >12 months interval from surgery to recurrence showed statistically significant higher overall survival rate than those with < or =12 months (p = 0.026). Six patients (10%) experienced > or =grade 3 complications. CONCLUSION: SBRT can be considered as an effective local modality for unresectable primary or recurrent cholangiocarcinoma.
		                        		
		                        		
		                        		
		                        			Cholangiocarcinoma*
		                        			;
		                        		
		                        			Disease-Free Survival
		                        			;
		                        		
		                        			Follow-Up Studies
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Multivariate Analysis
		                        			;
		                        		
		                        			Radiosurgery*
		                        			;
		                        		
		                        			Recurrence
		                        			;
		                        		
		                        			Retrospective Studies
		                        			;
		                        		
		                        			Survival Rate
		                        			;
		                        		
		                        			Tumor Burden
		                        			
		                        		
		                        	
5.What Are Patients with Thyroid Cancer Surgery Concerned about?.
Hanna KIM ; Yoon Hee PARK ; Young Ja OH ; Kyung Ah PARK ; In Sook KIM ; Kum Myoung WOO ; Bup Woo KIM ; Yong Sang LEE ; Hang Seok CHANG ; Cheong Soo PARK
Journal of Korean Thyroid Association 2013;6(2):115-120
		                        		
		                        			
		                        			BACKGROUND AND OBJECTIVES: To prevent getting wrong information and improve high quality of life, it is necessary to provide accurate information and patient education. This study aimed to collect basic data and develop educational program for thyroid cancer patient by understanding their educational needs. MATERIALS AND METHODS: Between April 16 and June 15, 2012, 159 patients who underwent thyroid cancer surgery were enrolled. This survey consisted of 5 areas including management of the symptom and the complication after surgery, postoperative wound and dietary management, treatment plan after discharge, medication management, and daily life. RESULTS: The most common way for the patients to acquire information about the disease was Internet and the patients who used INTERNET as their information source were 54.7%. Doctors (76.1%) and nurses (21.4%) were the preferred educators for the patients, and small group education was the preferred education method. Specifically the need for "management of the symptom and the complication after surgery" was the highest (3.33), followed by "treatment plan after discharge" (3.31), "medication management" (3.19), "postoperative wound and dietary management" (3.17). CONCLUSION: Medical team including doctors and nurses should be the center to activate small group education for patients. Professional and individualized education program should be developed to give the proper education to patients and their family.
		                        		
		                        		
		                        		
		                        			Education
		                        			;
		                        		
		                        			Health Surveys
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Internet
		                        			;
		                        		
		                        			Methods
		                        			;
		                        		
		                        			Patient Education as Topic
		                        			;
		                        		
		                        			Quality of Life
		                        			;
		                        		
		                        			Thyroid Gland*
		                        			;
		                        		
		                        			Thyroid Neoplasms*
		                        			;
		                        		
		                        			Wounds and Injuries
		                        			
		                        		
		                        	
6.Antimicrobial effect of alexidine and chlorhexidine against Enterococcus faecalis infection.
Hyun-Shik KIM ; Seok Woo CHANG ; Seung-Ho BAEK ; Seung Hyun HAN ; Yoon LEE ; Qiang ZHU ; Kee-Yeon KUM
International Journal of Oral Science 2013;5(1):26-31
		                        		
		                        			
		                        			A previous study demonstrated that alexidine has greater affinity for the major virulence factors of bacteria than chlorhexidine. The aim of this study was to compare the antimicrobial activity of 1% alexidine with that of 2% chlorhexidine using Enterococcus faecalis-infected dentin blocks. Sixty bovine dentin blocks were prepared and randomly divided into six groups of 10 each. E. faecalis was inoculated on 60 dentin blocks using the Luppens apparatus for 24 h and then the dentin blocks were soaked in 2% chlorhexidine or 1% alexidine solutions for 5 and 10 min, respectively. Sterile saline was used as a control. The antimicrobial efficacy was assessed by counting the number of bacteria adhering to the dentin surface and observing the degradation of bacterial shape or membrane rupture under a scanning electron microscope. Significantly fewer bacteria were observed in the 2% chlorhexidine- or 1% alexidine-soaked groups than in the control group (P<0.05). However, there was no significant difference in the number of bacteria adhering to the dentinal surface between the two experimental groups or between the two soaking time groups (P>0.05). Ruptured or antiseptic-attached bacteria were more frequently observed in the 10-min-soaked chlorhexidine and alexidine groups than in the 5-min-soaked chlorhexidine and alexidine groups. In conclusion, 10-min soaking with 1% alexidine or 2% chlorhexidine can be effective against E. faecalis infection.
		                        		
		                        		
		                        		
		                        			Animals
		                        			;
		                        		
		                        			Anti-Bacterial Agents
		                        			;
		                        		
		                        			pharmacology
		                        			;
		                        		
		                        			Bacterial Adhesion
		                        			;
		                        		
		                        			drug effects
		                        			;
		                        		
		                        			Bacterial Load
		                        			;
		                        		
		                        			drug effects
		                        			;
		                        		
		                        			Biguanides
		                        			;
		                        		
		                        			pharmacology
		                        			;
		                        		
		                        			Cattle
		                        			;
		                        		
		                        			Cell Membrane
		                        			;
		                        		
		                        			drug effects
		                        			;
		                        		
		                        			Chlorhexidine
		                        			;
		                        		
		                        			pharmacology
		                        			;
		                        		
		                        			Dentin
		                        			;
		                        		
		                        			microbiology
		                        			;
		                        		
		                        			Enterococcus faecalis
		                        			;
		                        		
		                        			drug effects
		                        			;
		                        		
		                        			Microscopy, Electron, Scanning
		                        			;
		                        		
		                        			Random Allocation
		                        			;
		                        		
		                        			Time Factors
		                        			
		                        		
		                        	
7.A Study on the Factors that Influence the Surgical Outcomes of Choledochal Cyst in Children.
Jong Kyu KIM ; Gyoung Tae NOH ; Seok Ki MIN ; Kum Ja CHOI
Journal of the Korean Association of Pediatric Surgeons 2012;18(1):1-11
		                        		
		                        			
		                        			No abstract available.
		                        		
		                        		
		                        		
		                        			Child
		                        			;
		                        		
		                        			Choledochal Cyst
		                        			;
		                        		
		                        			Humans
		                        			
		                        		
		                        	
8.General anesthesia for cesarean section in a patient with multiple sclerosis: A case report.
Yun Sic BANG ; Kum Hee CHUNG ; Seok Hwan CHOI ; Duk Hee CHUN ; Minsung KIM ; Hyeonjeong YANG ; Ji Eun SONG ; Jong Yeon LEE
Anesthesia and Pain Medicine 2012;7(2):178-180
		                        		
		                        			
		                        			A 34-year-old female with multiple sclerosis (MS) was scheduled Cesarean section. She had been suffering from MS for 10 years and the symptoms of MS were paraplegia and urinary incontinence. After informed consent, anesthesia was induced with propofol and maintained with nitrous oxide, sevoflurane and fentanyl. Rocuronium was used for muscle relaxation and tracheal intubation. Train of four (TOF) ratio and bispectral index scale were monitored for adequate muscle relaxation and depth of anesthesia. She gave birth to a baby within 7 minutes after skin incision. When operation was over, TOF ratio was 0.8. She emerged from general anesthesia smoothly and was extubated. There was no febrile event or exacerbation of MS after Cesarean section under general anesthesia. We report a safe anesthetic management of the parturient with MS, using sevoflurane.
		                        		
		                        		
		                        		
		                        			Adult
		                        			;
		                        		
		                        			Androstanols
		                        			;
		                        		
		                        			Anesthesia
		                        			;
		                        		
		                        			Anesthesia, General
		                        			;
		                        		
		                        			Cesarean Section
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Fentanyl
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Informed Consent
		                        			;
		                        		
		                        			Intubation
		                        			;
		                        		
		                        			Methyl Ethers
		                        			;
		                        		
		                        			Multiple Sclerosis
		                        			;
		                        		
		                        			Muscle Relaxation
		                        			;
		                        		
		                        			Nitrous Oxide
		                        			;
		                        		
		                        			Paraplegia
		                        			;
		                        		
		                        			Parturition
		                        			;
		                        		
		                        			Pregnancy
		                        			;
		                        		
		                        			Propofol
		                        			;
		                        		
		                        			Skin
		                        			;
		                        		
		                        			Stress, Psychological
		                        			;
		                        		
		                        			Urinary Incontinence
		                        			
		                        		
		                        	
9.Surgical Outcomes and Prognostic Factors after Epilepsy Surgery in Children with Extratemporal Lobe Epilepsy.
Kum Ok CHOI ; Hoon Chul KANG ; Joon Soo LEE ; Dong Seok KIM ; Heung Dong KIM
Journal of the Korean Child Neurology Society 2010;18(1):20-32
		                        		
		                        			
		                        			PURPOSE: In this study, we reviewed surgical outcomes in children with extratemporal lobe epilepsy in our institution and suggested prognostic factors from these results. METHODS: We retrospectively analyzed the records of 59 patients(males n=35, females n=24; mean age of 10 years, mean age of seizure onset of 3 years, mean age of epilepsy surgery of 8 years) who received extratemporal lobe surgery between October 2003 to May 2008. Every patients were performed preoperative evaluation to determine the anatomical location of the ictal onset zone employing video electroencephalography(EEG) monitoring, intraoperative electrocorticography, intracranial EEG monitoring and neuroimagings such as Magnetic Resonance Imaging (MRI), positron emission tomography, interictal/ictal single photon emission computed tomography. Developmental test was taken at pre- and post-operation. RESULTS: Postoperative outcome as defined by Engel's classification were as follows; class I in 42(71.2%), II in 6(10.2%), III in 4(6.8%), and IV in 7(11.9%) patients. We considered six favorable prognostic factors from our data; age at operation, matching accuracy of video-EEG monitoring results, presence of a structural lesion on MRI, using specialized neuromodalities, involvement of lobe at surgery, and nature of the epileptogenic lesion. We also focused on unfavorable prognostic factors; no structural lesion on MRI, low grade of surgical pathology, postoperative epileptiform discharges on EEG. CONCLUSION: Early surgical intervention in pediatric patients with medically refractory seizure who possess focal epileptogenic foci of extratemporal lobe origin has been an effective and safe treatment.
		                        		
		                        		
		                        		
		                        			Child
		                        			;
		                        		
		                        			Electroencephalography
		                        			;
		                        		
		                        			Epilepsy
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Magnetic Resonance Imaging
		                        			;
		                        		
		                        			Monitoring, Intraoperative
		                        			;
		                        		
		                        			Pathology, Surgical
		                        			;
		                        		
		                        			Positron-Emission Tomography
		                        			;
		                        		
		                        			Prognosis
		                        			;
		                        		
		                        			Retrospective Studies
		                        			;
		                        		
		                        			Seizures
		                        			;
		                        		
		                        			Tomography, Emission-Computed, Single-Photon
		                        			
		                        		
		                        	
10.Evaluation of Corneal Biomechanical Properties Following Penetrating Keratoplasty Using the Ocular Response Analyzer.
Joo Young SHIN ; Jin Seok CHOI ; Joo Youn OH ; Mee Kum KIM ; Jin Hak LEE ; Won Ryang WEE
Korean Journal of Ophthalmology 2010;24(3):139-142
		                        		
		                        			
		                        			PURPOSE: To evaluate corneal biomechanical properties in eyes that had previously undergone penetrating keratoplasty (PK) using the ocular response analyzer (ORA). METHODS: We recruited 26 patients who had received unilateral PK. Corneal hysteresis (CH), corneal resistance factor (CRF), Goldmann-correlated intraocular pressure (IOPg), and cornea-compensated intraocular pressure (IOPcc) were measured with the ORA and were compared to the measurements from the contralateral eyes that did not undergo PK. RESULTS: The CH was 8.95+/-2.59 mmHg in eyes that underwent PK and 9.78+/-1.45 mmHg in the contralateral eyes that did not undergo PK (p=0.077). The CRF was 10.26+/-2.64 mmHg in post-PK eyes and 9.75+/-1.45 mmHg in the contralateral eyes (p=0.509), and the CH-CRF was significantly smaller in post-PK eyes (-1.31+/-2.32 mmHg in post-PK eyes vs. 0.03+/-0.88 mmHg in fellow eyes, p=0.016). The IOPg and IOPcc were significantly higher in the PK group than they were in the control group. The IOPcc's were 20.81+/-7.81 mmHg and 16.27+/-2.49 mmHg in post-PK and control eyes, respectively (p=0.011); and the IOPg's were 19.22+/-7.34 mmHg and 15.07+/-3.03 mmHg in post-PK and control eyes, respectively (p=0.019). The IOPcc-g's were 1.59+/-2.81 mmHg and 1.21+/-1.30 mmHg in post-PK and control eyes, respectively (p=0.412), and the central corneal thickness (CCT)'s were 489.11+/-90.60 microm and 556.24+/-42.84 microm in post-PK and control eyes, respectively (p=0.068). CONCLUSIONS: Following PK, CH tended to decrease while CRF tended to increase, significantly decreasing CH-CRF. A significantly higher intraocular pressure and a thinner CCT following PK may have contributed to the observed changes in these corneal biomechanical parameters.
		                        		
		                        		
		                        		
		                        			Adolescent
		                        			;
		                        		
		                        			Adult
		                        			;
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Cornea/*physiopathology
		                        			;
		                        		
		                        			*Diagnostic Techniques, Ophthalmological
		                        			;
		                        		
		                        			Elasticity
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Intraocular Pressure
		                        			;
		                        		
		                        			*Keratoplasty, Penetrating
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Middle Aged
		                        			;
		                        		
		                        			Postoperative Period
		                        			;
		                        		
		                        			Young Adult
		                        			
		                        		
		                        	
            
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