1.Alpha-lipoic acid protects human dopaminergic neuronal cells against hydrogen peroxide-induced cell injury by inhibiting autophagy and apoptosis
Kyeong-Rok KANG ; Jae-Sung KIM ; Tae-Hyeon KIM ; Jeong-Yeon SEO ; HyangI LIM ; Jong-Hyun PARK ; Kwang Yeol YANG ; Sun-Kyoung YU ; Heung-Joong KIM ; Chun Sung KIM ; Hong Sung CHUN ; Dong-Seol LEE ; Joo-Cheol PARK ; Do Kyung KIM
International Journal of Oral Biology 2021;46(1):15-22
		                        		
		                        			
		                        			Alpha-lipoic acid (ALA) is a naturally occurring antioxidant and has been previously used to treat diabetes and cardiovascular disease. However, the autophagy effects of ALA against oxidative stress-induced dopaminergic neuronal cell injury remain unclear. The aim of this study was to investigate the role of ALA in autophagy and apoptosis against oxidative stress in the SH-SY5Y human dopaminergic neuronal cell line. We examined SH-SY5Y phenotypes using the 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide assay (cell viability/proliferation), 4′,6-diamidino-2-phenylindole dihydrochloride nuclear staining, Live/Dead cell assay, cellular reactive oxygen species (ROS) assay, immunoblotting, and immunocytochemistry. Our data showed ALA attenuated hydrogen peroxide (H2O2)-induced ROS generation and cell death. ALA effectively suppressed Bax up-regulation and Bcl-2 and BclxL down-regulation. Furthermore, ALA increased the expression of the antioxidant enzyme, heme oxygenase-1. Moreover, the expression of Beclin-1 and LC-3 autophagy biomarkers was decreased by ALA in our cell model. Combined, these data suggest ALA protects human dopaminergic neuronal cells against H2O2-induced cell injury by inhibiting autophagy and apoptosis.
		                        		
		                        		
		                        		
		                        	
2.Alpha-lipoic acid protects human dopaminergic neuronal cells against hydrogen peroxide-induced cell injury by inhibiting autophagy and apoptosis
Kyeong-Rok KANG ; Jae-Sung KIM ; Tae-Hyeon KIM ; Jeong-Yeon SEO ; HyangI LIM ; Jong-Hyun PARK ; Kwang Yeol YANG ; Sun-Kyoung YU ; Heung-Joong KIM ; Chun Sung KIM ; Hong Sung CHUN ; Dong-Seol LEE ; Joo-Cheol PARK ; Do Kyung KIM
International Journal of Oral Biology 2021;46(1):15-22
		                        		
		                        			
		                        			Alpha-lipoic acid (ALA) is a naturally occurring antioxidant and has been previously used to treat diabetes and cardiovascular disease. However, the autophagy effects of ALA against oxidative stress-induced dopaminergic neuronal cell injury remain unclear. The aim of this study was to investigate the role of ALA in autophagy and apoptosis against oxidative stress in the SH-SY5Y human dopaminergic neuronal cell line. We examined SH-SY5Y phenotypes using the 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide assay (cell viability/proliferation), 4′,6-diamidino-2-phenylindole dihydrochloride nuclear staining, Live/Dead cell assay, cellular reactive oxygen species (ROS) assay, immunoblotting, and immunocytochemistry. Our data showed ALA attenuated hydrogen peroxide (H2O2)-induced ROS generation and cell death. ALA effectively suppressed Bax up-regulation and Bcl-2 and BclxL down-regulation. Furthermore, ALA increased the expression of the antioxidant enzyme, heme oxygenase-1. Moreover, the expression of Beclin-1 and LC-3 autophagy biomarkers was decreased by ALA in our cell model. Combined, these data suggest ALA protects human dopaminergic neuronal cells against H2O2-induced cell injury by inhibiting autophagy and apoptosis.
		                        		
		                        		
		                        		
		                        	
3.Dosing study of esmolol for reducing hemodynamic changes during lightwand intubation
Jin Ku KANG ; Sie Hyeon YOO ; Jin Hun CHUNG ; Nan Seol KIM ; Ho Soon JUNG ; Yong Han SEO ; Hea Rim CHUN ; Hyung Yoon GONG ; Hee Dong SON ; A Joo KIM
Anesthesia and Pain Medicine 2020;15(4):417-423
		                        		
		                        			 Background:
		                        			Lightwand is a convenient tool that can be used instead of a laryngoscope for intubation. Tracheal intubation causes direct stimulation of the larynx, drastically increasing hemodynamic values including blood pressure and heart rate. This study aims to identify the effect of different doses of esmolol on hemodynamic changes during lightwand intubation. 
		                        		
		                        			Methods:
		                        			The study subjects included 140 patients who underwent general anesthesia for elective surgery. The patients were randomly divided into four groups (35 patients in each group). The ‘C’ group only received 20 ml of normal saline, while the ‘E0.5’, ‘E1’, and ‘E2’ groups received 20 ml of normal saline containing esmolol—0.5 mg/kg, 1 mg/kg, and 2 mg/kg, respectively, injected 2 min prior to intubation. The patients’ blood pressure, heart rate, and rate-pressure product were measured six times, before and after the intubation. 
		                        		
		                        			Results:
		                        			The degree of heart rate elevation was suppressed in the E1 and E2 groups compared to the C group, and RPP after intubation significantly decreased in the E2 group compared to the C group. 
		                        		
		                        			Conclusions
		                        			1–2 mg/kg of a single esmolol injection prior to lightwand intubation effectively blunts heart rate elevation, and 2 mg/kg of esmolol injection blunts rate-pressure product elevation. 
		                        		
		                        		
		                        		
		                        	
4.A Case of the Drug Reaction with Eosinophilia and Systemic Symptom (DRESS) Following Isoniazid Treatment.
Jin Yong LEE ; Yun Jae SEOL ; Dong Woo SHIN ; Dae Young KIM ; Hong Woo CHUN ; Bo Young KIM ; Shin Ok JEONG ; Sang Hyok LIM ; An Soo JANG
Tuberculosis and Respiratory Diseases 2015;78(1):27-30
		                        		
		                        			
		                        			The drug reaction with eosinophilia and systemic symptom (DRESS) syndrome is a severe adverse drug-induced reaction which includes a severe skin eruption, fever, hematologic abnormalities (eosinophilia or atypical lymphocytes) and internal organ involvement. The most frequently reported drug was anticonvulsants. The diagnosis of DRESS syndrome is challenging because the pattern of cutaneous eruption and the types of organs involved are various. The treatments for DRESS syndrome are culprit drug withdrawal and corticosteroids. Here we report a 71-year-old man with skin eruption with eosinophilia and hepatic and renal involvement that appeared 4 weeks after he had taken anti-tuberculosis drugs (isoniazid, ethambutol, rifampicin, and pyrazinamide), and resolved after stopping anti-tuberculosis drugs and the administration of systemic corticosteroids. DRESS recurred after re-challenging isoniazid, we identified isoniazid was causative drug.
		                        		
		                        		
		                        		
		                        			Adrenal Cortex Hormones
		                        			;
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Anticonvulsants
		                        			;
		                        		
		                        			Diagnosis
		                        			;
		                        		
		                        			Drug Hypersensitivity Syndrome
		                        			;
		                        		
		                        			Eosinophilia*
		                        			;
		                        		
		                        			Ethambutol
		                        			;
		                        		
		                        			Fever
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Isoniazid*
		                        			;
		                        		
		                        			Rifampin
		                        			;
		                        		
		                        			Skin
		                        			;
		                        		
		                        			Tuberculosis
		                        			
		                        		
		                        	
5.Randomized, Controlled, Multi-center Trial: Comparing the Safety and Efficacy of DA-9701 and Itopride Hydrochloride in Patients With Functional Dyspepsia.
Myung Gyu CHOI ; Poong Lyul RHEE ; Hyojin PARK ; Oh Young LEE ; Kwang Jae LEE ; Suck Chei CHOI ; Sang Young SEOL ; Hoon Jai CHUN ; Jong Sun REW ; Dong Ho LEE ; Geun Am SONG ; Hwoon Yong JUNG ; Hyung Yong JEONG ; In Kyung SUNG ; Joon Seong LEE ; Soo Teik LEE ; Sung Kook KIM ; Yong Woon SHIN
Journal of Neurogastroenterology and Motility 2015;21(3):414-422
		                        		
		                        			
		                        			BACKGROUND/AIMS: Therapies of functional dyspepsia (FD) are limited. DA-9701 is a novel prokinetic agent formulated with Pharbitis semen and Corydalis Tuber. We aimed to assess the efficacy of DA-9701 compared with itopride in FD patients. METHODS: Patients with FD randomly received either itopride 50 mg or DA-9701 30 mg t.i.d after a 2-week baseline period. After 4 weeks of treatment, 2 primary efficacy endpoints were analyzed: the change from baseline in composite score of the 8 dyspeptic symptoms and the overall treatment effect. Impact on patients' quality of life was assessed using the Nepean Dyspepsia Index (NDI) questionnaire. RESULTS: We randomly assigned 464 patients with 455 having outcome data. The difference of the composite score change of the 8 symptoms between the 2 groups was 0.62, indicating that DA-9701 was not inferior to itopride. The overall treatment effect response rate was not different between the groups. When responder was defined as > or = 5 of the 7 Likert scale, responder rates were 37% of DA-9701 and 36% of itopride group. Patients receiving DA-9701 experienced similar mean percentage of days with adequate relief during the 4-week treatment period compared with those receiving itopride (56.8% vs 59.1%). Both drugs increased the NDI score of 5 domains without any difference in change of the NDI score between the groups. The safety profile of both drugs was comparable. CONCLUSIONS: DA-9701 significantly improves symptoms in patients with FD. DA-9701 showed non-inferior efficacy to itopride with comparable safety.
		                        		
		                        		
		                        		
		                        			Corydalis
		                        			;
		                        		
		                        			Dyspepsia*
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Quality of Life
		                        			;
		                        		
		                        			Surveys and Questionnaires
		                        			;
		                        		
		                        			Semen
		                        			
		                        		
		                        	
6.Clinicopathological Characteristics of Colon Cancer Diagnosed at Primary Health Care Institutions.
Sang Hyun PARK ; Chi Wook SONG ; Yun Bae KIM ; Young Sun KIM ; Hwang Rae CHUN ; Jung Hyun LEE ; Won Jong SEOL ; Hyung Sun YOON ; Myung Kwon LEE ; Jong Hyup LEE ; Choon Sang BHANG ; Jae Hyung PARK ; Ji Young PARK ; Byung Hun DO ; Young Dae PARK ; Sang Jeong YOON ; Chan Wook PARK ; Su Mi YOON ; Jong Hwan CHOI ; Ki Chul SHIN ; Dong Hoon KO ; Young Jin KIM ; Dong Choon SEOL
Intestinal Research 2014;12(2):131-138
		                        		
		                        			
		                        			BACKGROUND/AIMS: The purpose of this study was to evaluate the clinicopathologic characteristics of colon cancers detected at the SOK Sokpeynhan Internal Medical Network, a nationwide system of primary health care institutions. METHODS: We analyzed 579 colon cancer patients diagnosed using colonoscopy at the SOK network from January 2011 through December 2012. Cancers from the rectum to the splenic flexure were classified as left colon cancer. Patients over 65 were classified as senior. RESULTS: The mean age (+/-SD) of subjects was 60.9+/-10.5 years and 61.1% were men. More than one quarter (28.2%) of patients were asymptomatic. The prevalence of left colon cancer was higher (77.9%) than that for right colon cancer. The most frequent macroscopic and histologic types were depressed (58.9%) and moderately differentiated adenocarcinoma (52.2%), respectively. Asymptomatic subjects displayed protruding or well differentiated adenocarcinoma, while symptomatic patients were more likely to display depressed or moderately differentiated adenocarcinoma (P<0.05). The mean age of the right colon cancer group was higher than that for the left colon cancer group (P<0.05). Among symptomatic patients, the most frequent symptoms were bloody stool for patients with left colon cancer and abdominal discomfort for patients with right colon cancer (P<0.05). The prevalence of depressed cancer was higher in older subjects as compared to younger subjects (P<0.05). The prevalence of right colon cancer tended to increase with age, although this difference did not achieve statistical significance (P>0.05). CONCLUSIONS: Study results indicated an increase of colon cancer amongst younger demographics in recent years. The effectiveness of colonoscopy screening was also evident, as asymptomatic patients demonstrated frequent findings of well differentiated adenocarcinomas. Study results also suggested a need for closer examination of older patients, as right colon cancer tended to increase with age.
		                        		
		                        		
		                        		
		                        			Adenocarcinoma
		                        			;
		                        		
		                        			Colon, Transverse
		                        			;
		                        		
		                        			Colonic Neoplasms*
		                        			;
		                        		
		                        			Colonoscopy
		                        			;
		                        		
		                        			Demography
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Mass Screening
		                        			;
		                        		
		                        			Population Characteristics
		                        			;
		                        		
		                        			Prevalence
		                        			;
		                        		
		                        			Primary Health Care*
		                        			;
		                        		
		                        			Rectum
		                        			
		                        		
		                        	
7.Neutrophil to Lymphocyte Ratio Predicts Long-Term Clinical Outcomes in Patients with ST-Segment Elevation Myocardial Infarction Undergoing Primary Percutaneous Coronary Intervention.
Yang Chun HAN ; Tae Hyun YANG ; Doo Il KIM ; Han Young JIN ; Sang Ryul CHUNG ; Jeong Sook SEO ; Jae Sik JANG ; Dae Kyeong KIM ; Dong Kie KIM ; Ki Hun KIM ; Sang Hoon SEOL ; Dong Soo KIM
Korean Circulation Journal 2013;43(2):93-99
		                        		
		                        			
		                        			BACKGROUND AND OBJECTIVES: A higher neutrophil to lymphocyte ratio (NLR) has been associated with poor clinical outcomes in various cardiac diseases. However, the clinical availability of NLR in patients with ST-elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PCI) has not been known. We evaluated the availability of NLR to predict clinical outcomes in patients with STEMI undergoing primary PCI. SUBJECTS AND METHODS: We analyzed 326 consecutive STEMI patients treated with primary PCI. The patients were divided into tertiles according to NLR: NLR< or =3.30 (n=108), 3.31
		                        		
		                        			Cause of Death
		                        			;
		                        		
		                        			Creatinine
		                        			;
		                        		
		                        			Heart Diseases
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Incidence
		                        			;
		                        		
		                        			Lymphocytes
		                        			;
		                        		
		                        			Myocardial Infarction
		                        			;
		                        		
		                        			Neutrophils
		                        			;
		                        		
		                        			Percutaneous Coronary Intervention
		                        			;
		                        		
		                        			Stroke
		                        			;
		                        		
		                        			Stroke Volume
		                        			
		                        		
		                        	
8.Successful Percutaneous Coronary Intervention for Acute Coronary Syndrome in a Patient With Severe Hemophilia A.
Dong Kie KIM ; Doo Il KIM ; Mo Se KIM ; Eun Ji LEE ; Young Bok KIM ; Hwan Jin CHO ; Yang Chun HAN ; Ung KIM ; Sang Hoon SEOL ; Tae Hyun YANG ; Dae Kyung KIM ; Dong Soo KIM
Korean Circulation Journal 2010;40(10):527-529
		                        		
		                        			
		                        			Patients with hemophilia generally have a reduced frequency of coronary artery disease compared to the general population. As advances in the management of hemophilia have increased their life expectancy, the prevalence of coronary artery disease also has increased. However, there are no standard treatment guidelines for coronary artery disease in patients with hemophilia, especially in the field of coronary intervention. We report the case of a patient with severe hemophilia A who presented with acute coronary syndrome and was successfully treated with percutaneous coronary intervention.
		                        		
		                        		
		                        		
		                        			Acute Coronary Syndrome
		                        			;
		                        		
		                        			Angioplasty
		                        			;
		                        		
		                        			Coronary Artery Disease
		                        			;
		                        		
		                        			Hemophilia A
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Life Expectancy
		                        			;
		                        		
		                        			Percutaneous Coronary Intervention
		                        			;
		                        		
		                        			Prevalence
		                        			
		                        		
		                        	
9.Association of P-Wave Dispersion With Paroxysmal Atrial Fibrillation in Patients With Acute Anterior Wall ST Segment Elevation Myocardial Infarction.
Yang Chun HAN ; Seong Man KIM ; Je Hyuck JANG ; Kyu Nam CHOI ; Bong Soo PARK ; Eun Ji NOH ; Ki Hun KIM ; Sang Hoon SEOL ; Tae Hyun YANG ; Dae Kyeong KIM ; Doo Il KIM ; Dong Soo KIM
Korean Circulation Journal 2009;39(2):66-70
		                        		
		                        			
		                        			BACKGROUND AND OBJECTIVES: P-wave dispersion (PWD) is a well-known electrophysiologic parameter of atria which are prone to fibrillation. Although paroxysmal atrial fibrillation (PAF) following an acute myocardial infarction (AMI) is not uncommon, the relationship between PWD and PAF following AMI has not been determined. SUBJECTS AND METHODS: We reviewed the electrocardiograms, recorded on admission and every day during hospitalization, of 144 patients with primary anterior AMIs and measured the P-wave duration. The left atrial diameter and left ventricular ejection fraction (LVEF) were evaluated by echocardiography. RESULTS: PAF occurred in 20 patients. The maximum P-wave duration and PWD were found to be significantly higher in patients with PAF than those without PAF (120.1+/-8.6 vs. 109.2+/-12.2 ms, p<0.001; and 68.5+/-11.9 vs. 48.7+/-9.6 ms, p<0.001, respectively). The minimum P-wave duration was significantly lower in patients with PAF than in patients without PAF (51.6+/-13.3 vs. 60.4+/-11.7 ms, respectively, p=0.003). There was no significant difference in the left atrial diameter between patients with PAF and patients without PAF (37.3+/-4.4 vs. 36.8+/-5.1 mm, respectively p=0.652); however, the LVEF was significantly different in the patients who developed PAF compared to those who did not develop PAF (38.5+/-11.4 vs. 45.1+/-8.7%, respectively, p=0.003). CONCLUSION: The maximum P-wave duration and PWD were significant predictive factors of PAF in patients with anterior wall ST elevation AMI based on univariate analysis. On the basis of multivariate analysis, age was an independent predictive parameter for PAF as well.
		                        		
		                        		
		                        		
		                        			Atrial Fibrillation
		                        			;
		                        		
		                        			Echocardiography
		                        			;
		                        		
		                        			Electrocardiography
		                        			;
		                        		
		                        			Hospitalization
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Multivariate Analysis
		                        			;
		                        		
		                        			Myocardial Infarction
		                        			;
		                        		
		                        			Stroke Volume
		                        			
		                        		
		                        	
10.Multiple Sequential Complications After Sirolimus-Eluting Stent Implantation: Very Late Stent Thrombosis, Stent Fracture, In-Stent Restenosis, and Peri-Stent Aneurysm.
Sang Hoon SEOL ; Doo Il KIM ; Yang Chun HAN ; Ki Hun KIM ; Dong Kie KIM ; Young Bok KIM ; Ung KIM ; Tae Hyun YANG ; Dae Kyeong KIM ; Dong Soo KIM
Korean Circulation Journal 2009;39(10):439-442
		                        		
		                        			
		                        			A 55-year-old male patient presented with an acute myocardial infarction. A sirolimus-eluting stent (SES) was implanted in the proximal left anterior descending artery (LAD). Eight months later, there was a newly developed distal LAD lesion. An additional SES was implanted. Twenty-eight months after the index procedure of primary coronary intervention, the electrocardiogram showed ST elevation in the precordial leads and an emergency coronary angiogram showed diffuse stent thrombosis (ST) in the proximal LAD. Thirty-four months after the index procedure, coronary angiography showed a large peri-stent coronary aneurysm in the proximal LAD and focal in-stent restenosis (ISR) at the proximal edge of the distal LAD stent. On fluoroscopy, a fracture was noted in the middle part of the distal SES. A zotarolimus- eluting stent (ZES) was deployed and overlapped the restenosis and fracture sites. Forty months after the index procedure, there were no changes in the size of the aneurysm or in the other stent complications including the fracture and restenosis. At present, the patient has remained asymptomatic for eight months.
		                        		
		                        		
		                        		
		                        			Aneurysm
		                        			;
		                        		
		                        			Arteries
		                        			;
		                        		
		                        			Coronary Aneurysm
		                        			;
		                        		
		                        			Coronary Angiography
		                        			;
		                        		
		                        			Drug-Eluting Stents
		                        			;
		                        		
		                        			Electrocardiography
		                        			;
		                        		
		                        			Emergencies
		                        			;
		                        		
		                        			Fluoroscopy
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Middle Aged
		                        			;
		                        		
		                        			Myocardial Infarction
		                        			;
		                        		
		                        			Stents
		                        			;
		                        		
		                        			Thrombosis
		                        			
		                        		
		                        	
            
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