2.Anti-Inflammatory Effect for Atherosclerosis Progression by Sodium-Glucose Cotransporter 2 (SGLT-2) Inhibitor in a Normoglycemic Rabbit Model
Seul Gee LEE ; Seung Jun LEE ; Jung Jae LEE ; Jung Sun KIM ; Oh Hyun LEE ; Choong Ki KIM ; Darae KIM ; Yong Ho LEE ; Jaewon OH ; Seil PARK ; Ok Hee JEON ; Sung Jin HONG ; Chul Min AHN ; Byeong Keuk KIM ; Young Guk KO ; Donghoon CHOI ; Myeong Ki HONG ; Yansoo JANG
Korean Circulation Journal 2020;50(5):443-457
BACKGROUND AND OBJECTIVES: We sought to investigate an anti-atherosclerotic and anti-inflammatory effect of sodium-glucose cotransporter-2 (SGLT-2) inhibitors in normoglycemic atherosclerotic rabbit model.METHODS: Male New Zealand white rabbits (n=26) were fed with a 1% high-cholesterol diet for 7 weeks followed by normal diet for 2 weeks. After balloon catheter injury, the rabbits were administered with the Dapagliflozin (1mg/kg/day) or control-medium for 8 weeks (n=13 for each group). All lesions were assessed with angiography, optical coherence tomography (OCT), and histological assessment.RESULTS: Atheroma burden (38.51±3.16% vs. 21.91±1.22%, p<0.01) and lipid accumulation (18.90±3.63% vs. 10.20±2.03%, p=0.047) was significantly decreased by SGLT-2 inhibitor treatment. The SGLT-2 inhibitor group showed lower macrophage infiltration (20.23±1.89% vs. 12.72±1.95%, p=0.01) as well as tumor necrosis factor (TNF)-α expression (31.17±4.40% vs. 19.47±2.10%, p=0.025). Relative area of inducible nitric oxide synthase+ macrophages was tended to be lower in the SGLT-2 inhibitor-treated group (1.00±0.16% vs. 0.71±0.10%, p=0.13), while relative proportion of Arg1⁺ macrophage was markedly increased (1.00±0.27% vs. 2.43±0.64%, p=0.04). As a result, progression of atherosclerosis was markedly attenuated in SGLT-2 inhibitor treated group (OCT area stenosis, 32.13±1.20% vs. 22.77±0.88%, p<0.01). Mechanistically, SGLT-2 treatment mitigated the inflammatory responses in macrophage. Especially, Toll-like receptor 4/nuclear factor-kappa B signaling pathway, and their downstream effectors such as interleukin-6 and TNF-α were markedly suppressed by SGLT-2 inhibitor treatment.CONCLUSIONS: These results together suggest that SGLT-2 inhibitor exerts an anti-atherosclerotic effect through favorable modulation of inflammatory response as well as macrophage characteristics in non-diabetic situation.
Angiography
;
Atherosclerosis
;
Catheters
;
Constriction, Pathologic
;
Diet
;
Humans
;
Interleukin-6
;
Macrophages
;
Male
;
Nitric Oxide
;
Plaque, Atherosclerotic
;
Rabbits
;
Toll-Like Receptors
;
Tomography, Optical Coherence
;
Tumor Necrosis Factor-alpha
3.Anti-Inflammatory Effect for Atherosclerosis Progression by Sodium-Glucose Cotransporter 2 (SGLT-2) Inhibitor in a Normoglycemic Rabbit Model
Seul Gee LEE ; Seung Jun LEE ; Jung Jae LEE ; Jung Sun KIM ; Oh Hyun LEE ; Choong Ki KIM ; Darae KIM ; Yong Ho LEE ; Jaewon OH ; Seil PARK ; Ok Hee JEON ; Sung Jin HONG ; Chul Min AHN ; Byeong Keuk KIM ; Young Guk KO ; Donghoon CHOI ; Myeong Ki HONG ; Yansoo JANG
Korean Circulation Journal 2020;50(5):443-457
BACKGROUND AND OBJECTIVES:
We sought to investigate an anti-atherosclerotic and anti-inflammatory effect of sodium-glucose cotransporter-2 (SGLT-2) inhibitors in normoglycemic atherosclerotic rabbit model.
METHODS:
Male New Zealand white rabbits (n=26) were fed with a 1% high-cholesterol diet for 7 weeks followed by normal diet for 2 weeks. After balloon catheter injury, the rabbits were administered with the Dapagliflozin (1mg/kg/day) or control-medium for 8 weeks (n=13 for each group). All lesions were assessed with angiography, optical coherence tomography (OCT), and histological assessment.
RESULTS:
Atheroma burden (38.51±3.16% vs. 21.91±1.22%, p<0.01) and lipid accumulation (18.90±3.63% vs. 10.20±2.03%, p=0.047) was significantly decreased by SGLT-2 inhibitor treatment. The SGLT-2 inhibitor group showed lower macrophage infiltration (20.23±1.89% vs. 12.72±1.95%, p=0.01) as well as tumor necrosis factor (TNF)-α expression (31.17±4.40% vs. 19.47±2.10%, p=0.025). Relative area of inducible nitric oxide synthase+ macrophages was tended to be lower in the SGLT-2 inhibitor-treated group (1.00±0.16% vs. 0.71±0.10%, p=0.13), while relative proportion of Arg1⺠macrophage was markedly increased (1.00±0.27% vs. 2.43±0.64%, p=0.04). As a result, progression of atherosclerosis was markedly attenuated in SGLT-2 inhibitor treated group (OCT area stenosis, 32.13±1.20% vs. 22.77±0.88%, p<0.01). Mechanistically, SGLT-2 treatment mitigated the inflammatory responses in macrophage. Especially, Toll-like receptor 4uclear factor-kappa B signaling pathway, and their downstream effectors such as interleukin-6 and TNF-α were markedly suppressed by SGLT-2 inhibitor treatment.
CONCLUSIONS
These results together suggest that SGLT-2 inhibitor exerts an anti-atherosclerotic effect through favorable modulation of inflammatory response as well as macrophage characteristics in non-diabetic situation.
4.Application of Metabolomics to Quality Control of Natural Product Derived Medicines.
Kyung Min LEE ; Jun Yeong JEON ; Byeong Ju LEE ; Hwanhui LEE ; Hyung Kyoon CHOI
Biomolecules & Therapeutics 2017;25(6):559-568
Metabolomics has been used as a powerful tool for the analysis and quality assessment of the natural product (NP)-derived medicines. It is increasingly being used in the quality control and standardization of NP-derived medicines because they are composed of hundreds of natural compounds. The most common techniques that are used in metabolomics consist of NMR, GC-MS, and LC-MS in combination with multivariate statistical analyses including principal components analysis (PCA) and partial least squares-discriminant analysis (PLS-DA). Currently, the quality control of the NP-derived medicines is usually conducted using HPLC and is specified by one or two indicators. To create a superior quality control framework and avoid adulterated drugs, it is necessary to be able to determine and establish standards based on multiple ingredients using metabolic profiling and fingerprinting. Therefore, the application of various analytical tools in the quality control of NP-derived medicines forms the major part of this review. Veregen® (Medigene AG, Planegg/Martinsried, Germany), which is the first botanical prescription drug approved by US Food and Drug Administration, is reviewed as an example that will hopefully provide future directions and perspectives on metabolomics technologies available for the quality control of NP-derived medicines.
Chromatography, High Pressure Liquid
;
Dermatoglyphics
;
Metabolomics*
;
Prescriptions
;
Quality Control*
;
United States Food and Drug Administration
5.Evaluation of mercury exposure level, clinical diagnosis and treatment for mercury intoxication.
Byeong Jin YE ; Byoung Gwon KIM ; Man Joong JEON ; Se Yeong KIM ; Hawn Cheol KIM ; Tae Won JANG ; Hong Jae CHAE ; Won Jun CHOI ; Mi Na HA ; Young Seoub HONG
Annals of Occupational and Environmental Medicine 2016;28(1):5-
Mercury occurs in various chemical forms, and it is different to health effects according to chemical forms. In consideration of the point, the evaluation of the mercury exposure to human distinguished from occupational and environmental exposure. With strict to manage occupational exposure in factory, it is declined mercury intoxication cases by metallic and inorganic mercury inhalation to occupational exposure. It is increasing to importance in environmental exposure and public health. The focus on the health impact of exposure to mercury is more on chronic, low or moderate grade exposure—albeit a topic of great controversy—, not high concentration exposure by methylmercury, which caused Minamata disease. Recently, the issue of mercury toxicity according to the mercury exposure level, health effects as well as the determination of what mercury levels affect health are in the spotlight and under active discussion. Evaluating the health effects and Biomarker of mercury exposure and establishing diagnosis and treatment standards are very difficult. It can implement that evaluating mercury exposure level for diagnosis by a provocation test uses chelating agent and conducting to appropriate therapy according to the result. but, indications for the therapy of chelating agents with mercury exposure have not yet been fully established. The therapy to symptomatic patients with mercury poisoning is chelating agents, combination therapy with chelating agents, plasma exchange, hemodialysis, plasmapheresis. But the further evaluations are necessary for the effects and side effects with each therapy.
Chelating Agents
;
Diagnosis*
;
Environmental Exposure
;
Humans
;
Inhalation
;
Mercury Poisoning
;
Mercury Poisoning, Nervous System
;
Occupational Exposure
;
Plasma Exchange
;
Plasmapheresis
;
Public Health
;
Renal Dialysis
6.Learning, memory and exploratory similarities in genetically identical cloned dogs.
Chi Won SHIN ; Geon A KIM ; Won Jun PARK ; Kwan Yong PARK ; Jeong Min JEON ; Hyun Ju OH ; Min Jung KIM ; Byeong Chun LEE
Journal of Veterinary Science 2016;17(4):563-567
Somatic cell nuclear transfer allows generation of genetically identical animals using donor cells derived from animals with particular traits. To date, few studies have investigated whether or not these cloned dogs will show identical behavior patterns. To address this question, learning, memory and exploratory patterns were examined using six cloned dogs with identical nuclear genomes. The variance of total incorrect choice number in the Y-maze test among cloned dogs was significantly lower than that of the control dogs. There was also a significant decrease in variance in the level of exploratory activity in the open fields test compared to age-matched control dogs. These results indicate that cloned dogs show similar cognitive and exploratory patterns, suggesting that these behavioral phenotypes are related to the genotypes of the individuals.
Animals
;
Clone Cells*
;
Dogs*
;
Genome
;
Genotype
;
Humans
;
Learning*
;
Memory*
;
Phenotype
;
Tissue Donors
7.Diffuse-Type Giant Cell Tumor Arising from a Pretibial Lesion: Extra-Articular Pigmented Villonodular Tenosynovitis.
Jun Beom KIM ; In Soo SONG ; Byeong Seop PARK ; Tae Hyeon JEON
The Journal of the Korean Orthopaedic Association 2016;51(1):91-95
Pigmented villonodular synovitis (PVNS) is a rare, benign, soft tissue neoplasm affecting the synovium of joints, classified as localized and diffused type. Localized type is more common, arising from synovium of joints, bursae, and tendon sheaths. Diffused type is relatively rare, frequently arising from an extra-articular lesion, and sometimes from an intramuscular or subcutaneous lesion. Although the cause of occurrence is not yet clear, recently it has been known as a benign neoplasm rather than an inflammatory or reactive process. We performed a total excision of the PVNS in a pretibial lesion and achieved a good result. We report on the case with a review of the literature.
Giant Cell Tumors*
;
Giant Cells*
;
Joints
;
Soft Tissue Neoplasms
;
Synovial Membrane
;
Synovitis, Pigmented Villonodular
;
Tendons
;
Tenosynovitis*
;
Tibia
8.Evaluation and management of lead exposure.
Hwan Cheol KIM ; Tae Won JANG ; Hong Jae CHAE ; Won Jun CHOI ; Mi Na HA ; Byeong Jin YE ; Byoung Gwon KIM ; Man Joong JEON ; Se Yeong KIM ; Young Seoub HONG
Annals of Occupational and Environmental Medicine 2015;27(1):30-
Lead, which is widely used in industry, is a common element found in low concentrations in the Earth's crust. Implementations to reduce environmental lead concentrations have resulted in a considerable reduction of lead levels in the environment (air) and a sustained reduction in the blood lead levels of the average citizen. However, people are still being exposed to lead through a variety of routes in everyday commodities. Lead causes health problems such as toxicity of the liver, kidneys, hematopoietic system, and nervous system. Having a carcinogenic risk as well, the IARC classifies inorganic lead compounds as probably carcinogenic to humans (Group 2A). Occupational lead poisonings have decreased due to the efforts to reduce the lead concentrations in the working environment. In contrast, health hazards associated with long-term environmental exposure to low concentrations of lead have been reported steadily. In particular, chronic exposure to low concentrations of lead has been reported to induce cognitive behavioral disturbances in children. It is almost impossible to remove lead completely from the human body, and it is not easy to treat health hazards due to lead exposure. Therefore, reduction and prevention of lead exposure are very important. We reviewed the toxicity and health hazards, monitoring and evaluation, and management of lead exposure.
Antioxidants
;
Child
;
Environmental Exposure
;
Hematopoietic System
;
Human Body
;
Humans
;
Kidney
;
Lead Poisoning
;
Liver
;
Nervous System
9.Elevation of the Serum Apurinic/Apyrimidinic Endonuclease 1/Redox Factor-1 in Coronary Artery Disease.
Seon Ah JIN ; Hee Jung SEO ; Sun Kyeong KIM ; Yu Ran LEE ; Sunga CHOI ; Kye Taek AHN ; Jun Hyung KIM ; Jae Hyeong PARK ; Jae Hwan LEE ; Si Wan CHOI ; In Whan SEONG ; Byeong Hwa JEON ; Jin Ok JEONG
Korean Circulation Journal 2015;45(5):364-371
BACKGROUND AND OBJECTIVES: Apurinic/apyrimidinic endonuclease 1/redox effector factor-1 (APE1/Ref-1) is a multifunctional protein involved in the DNA base excision repair pathway, inflammation, angiogenesis, and survival pathways. We investigated serum APE1/Ref-1 in patients with coronary artery disease (CAD). SUBJECTS AND METHODS: Serum APE1/Ref-1 was measured with a sandwich enzyme-linked immunosorbent assay from 360 patients who received coronary angiograms. They were divided into two groups; a control (n=57) and a CAD group (n=303), the latter included angina (n=128) and myocardial infarction (MI, n=175). RESULTS: The levels of APE1/Ref-1 were higher in the CAD than the control (0.63+/-0.07 vs. 0.12+/-0.07 ng/100 microL, respectively; p<0.01). They were also higher in MI than angina (0.81+/-0.10 vs. 0.38+/-0.11 ng/100 microL, respectively; p<0.01) and different according to the thrombolysis in myocardial infarction (TIMI) flow (0.88+/-0.09 for TIMI flow 0, 1, 2 vs. 0.45+/-0.13 ng/100 microL for TIMI flow 3, p<0.01) in acute coronary syndrome. In correlation analysis, the levels of APE1/Ref-1 were positively correlated with Troponin I (r=0.222; p<0.0001) and N-terminal pro-B type natriuretic peptide (NT-proBNP, r=0.217; p<0.0001) but not high sensitivity to C-reactive protein. Also, they revealed a negative correlation with ejection fraction (EF, r=-0.221; p=0.002). However, there were no significant differences among the three groups, were divided by their levels of APE1/Ref-1, for major adverse cardiovascular events (death, recurrent MI, stroke, revascularization) (8.2 vs. 14.0 vs. 12.5%, p=ns). CONCLUSION: The levels of serum APE1/Ref-1 are elevated in CAD, and are higher in MI than in angina. They are correlated with Troponin I, NT-proBNP, and EF.
Acute Coronary Syndrome
;
Biomarkers
;
C-Reactive Protein
;
Coronary Artery Disease*
;
Coronary Vessels*
;
DNA
;
DNA Repair
;
Enzyme-Linked Immunosorbent Assay
;
Humans
;
Inflammation
;
Myocardial Infarction
;
Stroke
;
Troponin I
10.Non-Adherence to Psychiatric Intervention in Work Related Burns.
Sang Bae JEON ; Chang Hwan HAN ; Byeong Kil YEON ; Seong Gon RYU ; Sun Ja KIM ; Mi Ja PARK ; Wook CHUN ; Jun HUR ; Dohern KIM ; Boung Chul LEE
Journal of Korean Burn Society 2013;16(1):24-29
PURPOSE: Patients with work related burns suffer from anxiety, depression, insomnia and suicide ideation etc. Psychiatric symptoms could be reduced by treatment. Almost all patients are referred to psychiatric intervention in our hospital. However, a number of patients show non-adherence. The aim of this study is to figure out the reason of non-adherence and psychiatric symptoms of work related burns patients. METHODS: 123 patients participated in this study. Startle, Physiological arousal, Anger, and Numbness (SPAN), Feeling Suicide, Patient Health Questionnaire-2 (PHQ-2) were administered as screening tool. Questions about psychiatric intervention and reasons to refuse psychiatric intervention were asked. RESULTS: 32% patients were depressed, 34% patients had suicide ideation and 59% had PTSD after work related burns. However, 46% of burn patients had not been treated. Stigma of psychiatric intervention and concerns about dependency were major reasons for non-adherence. CONCLUSION: There are gap between necessity and reality of psychiatric intervention on work related burn patients.
Anger
;
Anxiety
;
Arousal
;
Burns
;
Dependency (Psychology)
;
Depression
;
Humans
;
Hypesthesia
;
Mass Screening
;
Occupational Injuries
;
Referral and Consultation
;
Sleep Initiation and Maintenance Disorders
;
Stress Disorders, Post-Traumatic
;
Suicide

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