1.Ticagrelor Monotherapy After 3-Month Dual Antiplatelet Therapy in Acute Coronary Syndrome by High Bleeding Risk: The Subanalysis From the TICO Trial
Yong-Joon LEE ; Yongsung SUH ; Jung-Sun KIM ; Yun-Hyeong CHO ; Kyeong Ho YUN ; Yong Hoon KIM ; Jae Young CHO ; Ae-Young HER ; Sungsoo CHO ; Dong Woon JEON ; Sang-Yong YOO ; Deok-Kyu CHO ; Bum-Kee HONG ; Hyuckmoon KWON ; Sung-Jin HONG ; Chul-Min AHN ; Dong-Ho SHIN ; Chung-Mo NAM ; Byeong-Keuk KIM ; Young-Guk KO ; Donghoon CHOI ; Myeong-Ki HONG ; Yangsoo JANG ; For the TICO investigators
Korean Circulation Journal 2022;52(4):324-337
Background and Objectives:
Identifying patients with high bleeding risk (HBR) is important when making decisions for antiplatelet therapy strategy. This study evaluated the impact of ticagrelor monotherapy after 3-month dual antiplatelet therapy (DAPT) according to HBR in acute coronary syndrome (ACS) patients treated with drug eluting stents (DESs).
Methods:
In this post-hoc analysis of the TICO trial, HBR was defined by 2 approaches: meeting Academic Research Consortium for HBR (ARC-HBR) criteria or Predicting Bleeding Complications in Patients Undergoing Stent Implantation and Subsequent DAPT (PRECISEDAPT) score ≥25. The primary outcome was a 3–12 months net adverse clinical event (composite of major bleeding and adverse cardiac and cerebrovascular events).
Results:
Of the 2,980 patients without adverse events during the first 3 months after DES implantation, 453 (15.2%) were HBR by ARC-HBR criteria and 504 (16.9%) were HBR by PRECISE-DAPT score. The primary outcome rate was higher in HBR versus non-HBR patients (by ARC-HBR criteria: hazard ratio [HR], 2.87; 95% confidence interval [CI], 1.76– 4.69; p<0.001; by PRECISE-DAPT score: HR, 3.09; 95% CI, 1.92–4.98; p<0.001). Ticagrelor monotherapy after 3-month DAPT was associated with lower primary outcome rate than ticagrelor-based 12-month DAPT regardless of HBR by ARC-HBR criteria, with similar magnitudes of therapy effect for HBR and non-HBR patients (p-interaction=0.400). Results were consistent by PRECISE-DAPT score (p-interaction=0.178).
Conclusions
In ACS patients treated with DESs, ticagrelor monotherapy after 3-month DAPT was associated with lower rate of adverse clinical outcomes regardless of HBR, with similar magnitudes of therapy effect between HBR and non-HBR.Trial Registration: ClinicalTrials.gov Identifier: NCT02494895
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.
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⁺ 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
4.Rectourethral Fistula: Systemic Review of and Experiences With Various Surgical Treatment Methods.
Ji Hye CHOI ; Byeong Geon JEON ; Sang Gi CHOI ; Eon Chul HAN ; Heon Kyun HA ; Heung Kwon OH ; Eun Kyung CHOE ; Sang Hui MOON ; Seung Bum RYOO ; Kyu Joo PARK
Annals of Coloproctology 2014;30(1):35-41
PURPOSE: A rectourethral fistula (RUF) is an uncommon complication resulting from surgery, radiation or trauma. Although various surgical procedures for the treatment of an RUF have been described, none has gained acceptance as the procedure of choice. The aim of this study was to review our experience with surgical management of RUF. METHODS: The outcomes of 6 male patients (mean age, 51 years) with an RUF who were operated on by a single surgeon between May 2005 and July 2012 were assessed. RESULTS: The causes of the RUF were iatrogenic in four cases (two after radiation therapy for rectal cancer, one after brachytherapy for prostate cancer, and one after surgery for a bladder stone) and traumatic in two cases. Fecal diversion was the initial treatment in five patients. In one patient, fecal diversion was performed simultaneously with definitive repair. Four patients underwent staged repair after a mean of 12 months. Rectal advancement flaps were done for simple, small fistula (n = 2), and flap interpositions (gracilis muscle flap, n = 2; omental flap, n = 1) were done for complex or recurrent fistulae. Urinary strictures and incontinence were observed in patients after gracilis muscle flap interposition, but they were resolved with simple treatments. The mean follow-up period was 28 months, and closure of the fistula was achieved in all five patients (100%) who underwent definitive repairs. The fistula persisted in one patient who refused further definitive surgery after receiving only a fecal diversion. CONCLUSION: Depending on the severity and the recurrence status of RUF, a relatively simple rectal advancement flap repair or a more complex gracilis muscle or omental flap interposition can be used to achieve closure of the fistula.
Brachytherapy
;
Constriction, Pathologic
;
Fistula*
;
Follow-Up Studies
;
Humans
;
Male
;
Muscles
;
Prostatic Neoplasms
;
Rectal Fistula
;
Rectal Neoplasms
;
Recurrence
;
Surgical Flaps
;
Urinary Bladder
;
Urinary Fistula
5.A standardized bamboo leaf extract inhibits monocyte adhesion to endothelial cells by modulating vascular cell adhesion protein-1.
Sunga CHOI ; Myoung Soo PARK ; Yu Ran LEE ; Young Chul LEE ; Tae Woo KIM ; Seon Gil DO ; Dong Seon KIM ; Byeong Hwa JEON
Nutrition Research and Practice 2013;7(1):9-14
Bamboo leaves (Phyllostachys pubescens Mazel ex J. Houz (Poacea)) have a long history of food and medical applications in Asia, including Japan and Korea. They have been used as a traditional medicine for centuries. We investigated the mechanism of anti-inflammatory activity of a bamboo leaf extract (BLE) on tumor necrosis factor-alpha (TNF-alpha)-induced monocyte adhesion in human umbilical vein endothelial cells (HUVECs). Exposure of HUVECs to BLE did not inhibit cell viability or cause morphological changes at concentrations ranging from 1 microg/ml to 1 mg/ml. Treatment with 0.1 mg/ml BLE caused 63% inhibition of monocyte adhesion in TNF-alpha-activated HUVECs, which was associated with 38.4% suppression of vascular cell adhesion molecule-1 expression. Furthermore, TNF-alpha-induced reactive oxygen species generation was decreased to 47.9% in BLE treated TNF-alpha-activated HUVECs. BLE (0.05 mg/ml) also caused about 50% inhibition of interleukin-6 secretion from lipopolysaccharide-stimulated monocyte. The results indicate that BLE may be clinically useful as an anti-inflammatory or anti-oxidant for human cardiovascular disease including atherosclerosis.
Asia
;
Atherosclerosis
;
Cardiovascular Diseases
;
Cell Adhesion
;
Cell Survival
;
Endothelial Cells
;
Human Umbilical Vein Endothelial Cells
;
Humans
;
Interleukin-6
;
Japan
;
Korea
;
Medicine, Traditional
;
Monocytes
;
Reactive Oxygen Species
;
Tumor Necrosis Factor-alpha
;
Vascular Cell Adhesion Molecule-1
6.Asymptomatic Cervical Isthmic Spondylolisthesis and Associated Occult Spinal Bifida: A Case Report.
Jeong Wook LIM ; Sang Kuk KANG ; Su Gi JEON ; Byeong Chul LIM
Korean Journal of Spine 2013;10(1):35-37
We report a case of rare cervical isthmic spondylolisthesis of C6-7 combined occult spinal bifida at C6, and review the radiologic finding, different diagnosis and treatment. A 23-year old female presented nuchal, back pain after traffic accident. Radiologic finding showed the 6th cervical isthmic defect, spondylolisthesis and dysplasia. The patient was conservatively treated about 8 weeks, and 10 months after injury, she was symptom free with full range of motion of cervical spine and she was followed up. Cervical spondylolysis is a very rare condition. This clinical importance is vulnerable to trauma. For whatever reasons, symptomatic patients need to be treated by conservative or surgical option.
Accidents, Traffic
;
Back Pain
;
Cervical Vertebrae
;
Female
;
Humans
;
Range of Motion, Articular
;
Spine
;
Spondylolisthesis
;
Spondylolysis
7.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
8.Individualized Cutoff Value of the Preoperative Carcinoembryonic Antigen Level is Necessary for Optimal Use as a Prognostic Marker.
Byeong Geon JEON ; Rumi SHIN ; Jung Kee CHUNG ; In Mok JUNG ; Seung Chul HEO
Annals of Coloproctology 2013;29(3):106-114
PURPOSE: Carcinoembryonic antigen (CEA) is an important prognostic marker in colorectal cancer (CRC). However, in some stages, it does not work. We performed this study to find a way in which preoperative CEA could be used as a constant prognostic marker in harmony with the TNM staging system. METHODS: Preoperative CEA levels and recurrences in CRC were surveyed. The distribution of CEA levels and the recurrences in each TNM stage of CRC were analyzed. An optimal cutoff value for each TNM stage was calculated and tested for validity as a prognostic marker within the TNM staging system. RESULTS: The conventional cutoff value of CEA (5 ng/mL) was an independent prognostic factor on the whole. However, when evaluated in subgroups, it was not a prognostic factor in stage I or stage III of N2. A subgroup analysis according to TNM stage revealed different CEA distributions and recurrence rates corresponding to different CEA ranges. The mean CEA levels were higher in advanced stages. In addition, the recurrence rates of corresponding CEA ranges were higher in advanced stages. Optimal cutoff values from the receiver operating characteristic curves were 7.4, 5.5, and 4.5 ng/mL for TNM stage I, II, and III, respectively. Those for N0, N1, and N2 stages were 5.5, 4.8, and 3.5 ng/mL, respectively. The 5-year disease-free survivals were significantly different according to these cutoff values for each TNM and N stage. The multivariate analysis confirmed the new cutoff values to be more efficient in discriminating the prognosis in the subgroups of the TNM stages. CONCLUSION: Individualized cutoff values of the preoperative CEA level are a more practical prognostic marker following and in harmony with the TNM staging system.
Carcinoembryonic Antigen
;
Colorectal Neoplasms
;
Disease-Free Survival
;
Multivariate Analysis
;
Neoplasm Staging
;
Prognosis
;
Recurrence
;
ROC Curve
9.Individualized Cutoff Value of the Preoperative Carcinoembryonic Antigen Level is Necessary for Optimal Use as a Prognostic Marker.
Byeong Geon JEON ; Rumi SHIN ; Jung Kee CHUNG ; In Mok JUNG ; Seung Chul HEO
Annals of Coloproctology 2013;29(3):106-114
PURPOSE: Carcinoembryonic antigen (CEA) is an important prognostic marker in colorectal cancer (CRC). However, in some stages, it does not work. We performed this study to find a way in which preoperative CEA could be used as a constant prognostic marker in harmony with the TNM staging system. METHODS: Preoperative CEA levels and recurrences in CRC were surveyed. The distribution of CEA levels and the recurrences in each TNM stage of CRC were analyzed. An optimal cutoff value for each TNM stage was calculated and tested for validity as a prognostic marker within the TNM staging system. RESULTS: The conventional cutoff value of CEA (5 ng/mL) was an independent prognostic factor on the whole. However, when evaluated in subgroups, it was not a prognostic factor in stage I or stage III of N2. A subgroup analysis according to TNM stage revealed different CEA distributions and recurrence rates corresponding to different CEA ranges. The mean CEA levels were higher in advanced stages. In addition, the recurrence rates of corresponding CEA ranges were higher in advanced stages. Optimal cutoff values from the receiver operating characteristic curves were 7.4, 5.5, and 4.5 ng/mL for TNM stage I, II, and III, respectively. Those for N0, N1, and N2 stages were 5.5, 4.8, and 3.5 ng/mL, respectively. The 5-year disease-free survivals were significantly different according to these cutoff values for each TNM and N stage. The multivariate analysis confirmed the new cutoff values to be more efficient in discriminating the prognosis in the subgroups of the TNM stages. CONCLUSION: Individualized cutoff values of the preoperative CEA level are a more practical prognostic marker following and in harmony with the TNM staging system.
Carcinoembryonic Antigen
;
Colorectal Neoplasms
;
Disease-Free Survival
;
Multivariate Analysis
;
Neoplasm Staging
;
Prognosis
;
Recurrence
;
ROC Curve
10.Evaluation of a competitive ELISA for antibody detection against avian influenza virus.
Dae Sub SONG ; Youn Jeong LEE ; Ok Mi JEONG ; Yong Joo KIM ; Chan Hee PARK ; Jung Eun YOO ; Woo Jin JEON ; Jun Hun KWON ; Gun Woo HA ; Bo Kyu KANG ; Chul Seung LEE ; Hye Kwon KIM ; Byeong Yeal JUNG ; Jae Hong KIM ; Jin Sik OH
Journal of Veterinary Science 2009;10(4):323-329
Active serologic surveillance is necessary to control the spread of the avian influenza virus (AIV). In this study, we evaluated a commercially-available cELISA in terms of its ability to detect AIV antibodies in the sera of 3,358 animals from twelve species. cELISA detected antibodies against reference H1- through H15-subtype AIV strains without cross reactivity. Furthermore, the cELISA was able to detect antibodies produced following a challenge of the AIV H9N2 subtype in chickens, or following vaccination of the AIV H9 or H5 subtypes in chickens, ducks and geese. Next, we tested the sensitivity and specificity of the cELISA with sera from twelve different animal species, and compared these results with those obtained by the hemagglutination-inhibition (HI) test, the "gold standard" in AIV sera surveillance, a second commercially-available cELISA (IZS ELISA), or the agar gel precipitation (AGP) test. Compared with the HI test, the sensitivities and specificities of cELISA were 95% and 96% in chicken, 86% and 88% in duck, 97% and 100% in turkey, 100% and 87% in goose, and 91% and 97% in swine, respectively. The sensitivities and specificities of the cELISA in this study were higher than those of IZS ELISA for the duck, turkey, goose, and grey partridge sera samples. The results of AGP test against duck and turkey sera also showed significant correlation with the results of cELISA (R-value >0.9). In terms of flock sensitivity, the cELISA correlated better with the HI test than with commercially-available indirect ELISAs, with 100% flock sensitivity.
Animals
;
Antibodies, Viral/*blood
;
Birds
;
Enzyme-Linked Immunosorbent Assay/methods/*veterinary
;
Horses
;
Influenza A virus/*immunology
;
Influenza Vaccines/immunology
;
Influenza in Birds/blood/*immunology/prevention & control
;
Sensitivity and Specificity
;
Serologic Tests
;
Species Specificity
;
Swine

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