1.Management of immune thrombocytopenia: 2022 update of Korean experts recommendations
Young Hoon PARK ; Dae-Young KIM ; Seongkoo KIM ; Young Bae CHOI ; Dong-Yeop SHIN ; Jin Seok KIM ; Won Sik LEE ; Yeung-Chul MUN ; Jun Ho JANG ; Jong Wook LEE ; Hoon KOOK ;
Blood Research 2022;57(1):20-28
Despite the availability of therapies to treat patients with immune thrombocytopenia (ITP), there is currently little data from randomized trials to assist clinicians in managing patients. The evidence-based guidelines of the Korean Society of Hematology Aplastic Anemia Working Party (KSHAAWP) are intended to support patients and physicians in the management of ITP. Experts from the KSHAAWP discussed and described this guideline according to the current treatment situation for ITP in Korea and finalized the guidelines. The expert panel recommended the management of ITP in adult and pediatric patients with newly diagnosed, persistent, and chronic disease refractory to first-line therapy with minor bleeding. Management approaches include observation and administration of corticosteroids, intravenous immunoglobulin, anti-D immunoglobulin, and thrombopoietin receptor agonists. Currently, evidence supporting strong recommendations for various management approaches is lacking. Therefore, a large focus was placed on shared decision-making, especially regarding second-line treatment.
2.Risk Factors for Coronavirus Disease 2019 (COVID-19)-Associated Pulmonary Aspergillosis in Critically Ill Patients: A Nationwide, Multicenter, Retrospective Cohort Study
Si-Ho KIM ; Jin Yeong HONG ; Seongman BAE ; Hojin LEE ; Yu Mi WI ; Jae-Hoon KO ; Bomi KIM ; Eun-Jeong JOO ; Hyeri SEOK ; Hye Jin SHI ; Jeong Rae YOO ; Miri HYUN ; Hyun ah KIM ; Sukbin JANG ; Seok Jun MUN ; Jungok KIM ; Min-Chul KIM ; Dong-Sik JUNG ; Sung-Han KIM ; Kyong Ran PECK
Journal of Korean Medical Science 2022;37(18):e134-
Background:
Coronavirus disease 2019 (COVID-19) is often accompanied by secondary infections, such as invasive aspergillosis. In this study, risk factors for developing COVID-19-associated pulmonary aspergillosis (CAPA) and their clinical outcomes were evaluated.
Methods:
This multicenter retrospective cohort study included critically ill COVID-19 patients from July 2020 through March 2021. Critically ill patients were defined as patients requiring high-flow respiratory support or mechanical ventilation. CAPA was defined based on the 2020 European Confederation of Medical Mycology and the International Society for Human and Animal Mycology consensus criteria. Factors associated with CAPA were analyzed, and their clinical outcomes were adjusted by a propensity score-matched model.
Results:
Among 187 eligible patients, 17 (9.1%) developed CAPA, which is equal to 33.10 per 10,000 patient-days. Sixteen patients received voriconazole-based antifungal treatment. In addition, 82.4% and 53.5% of patients with CAPA and without CAPA, respectively, received early high-dose corticosteroids (P = 0.022). In multivariable analysis, initial 10-day cumulative steroid dose > 60 mg of dexamethasone or dexamethasone equivalent dose) (adjusted odds ratio [OR], 3.77; 95% confidence interval [CI], 1.03–13.79) and chronic pulmonary disease (adjusted OR, 4.20; 95% CI, 1.26–14.02) were independently associated with CAPA. Tendencies of higher 90-day overall mortality (54.3% vs. 35.2%, P= 0.346) and lower respiratory support-free rate were observed in patients with CAPA (76.3% vs. 54.9%, P = 0.089).
Conclusion
Our study showed that the dose of corticosteroid use might be a risk factor for CAPA development and the possibility of CAPA contributing to adverse outcomes in critically ill COVID-19 patients.
3.Synergistic Tumoricidal Effects of Alpha-Lipoic Acid and Radiotherapy on Human Breast Cancer Cells via HMGB1
Hoon Sik CHOI ; Jin Hyun KIM ; Si Jung JANG ; Jeong Won YUN ; Ki Mun KANG ; Hojin JEONG ; In Bong HA ; Bae Kwon JEONG
Cancer Research and Treatment 2021;53(3):685-694
Purpose:
Radiotherapy (RT) is one of main strategies of cancer treatment. However, some cancer cells are resistant to radiation-induced cell death, including apoptosis. Therefore, alternative approaches targeting different anti-tumor mechanisms such as cell senescence are required. This study aimed to investigate the synergistic effect of alpha-lipoic acid (ALA) on radiation-induced cell death and senescence in MDA-MB-231 human breast cancer cells.
Materials and Methods:
The cells were divided into four groups depending on the cell treatment (control, ALA, RT, and ALA+RT). Cells were analyzed for morphology, apoptotic cell death, mitochondrial reactive oxygen species, membrane potential, cellular senescence, and cell cycle.
Results:
Our data showed that ALA significantly promoted apoptotic cell death when combined with RT, as reflected by Annexin V staining, expression of apoptosis-related factors, mitochondrial damages as well as cell morphological changes and reduction of cell numbers. In addition, ALA significantly enhanced radiation-induced cellular senescence, which was shown by increased HMGB1 expression in the cytosol fraction compared to the control, increased p53 expression compared to the control, activation of p38 as well as nuclear factor кB, and G2/M cell cycle arrest.
Conclusion
The current study is the first report showing a new mode of action (senescence induction) of ALA beyond apoptotic cell death in MDA-MB-231 cancer cells known to be resistant to RT.
4.Synergistic Tumoricidal Effects of Alpha-Lipoic Acid and Radiotherapy on Human Breast Cancer Cells via HMGB1
Hoon Sik CHOI ; Jin Hyun KIM ; Si Jung JANG ; Jeong Won YUN ; Ki Mun KANG ; Hojin JEONG ; In Bong HA ; Bae Kwon JEONG
Cancer Research and Treatment 2021;53(3):685-694
Purpose:
Radiotherapy (RT) is one of main strategies of cancer treatment. However, some cancer cells are resistant to radiation-induced cell death, including apoptosis. Therefore, alternative approaches targeting different anti-tumor mechanisms such as cell senescence are required. This study aimed to investigate the synergistic effect of alpha-lipoic acid (ALA) on radiation-induced cell death and senescence in MDA-MB-231 human breast cancer cells.
Materials and Methods:
The cells were divided into four groups depending on the cell treatment (control, ALA, RT, and ALA+RT). Cells were analyzed for morphology, apoptotic cell death, mitochondrial reactive oxygen species, membrane potential, cellular senescence, and cell cycle.
Results:
Our data showed that ALA significantly promoted apoptotic cell death when combined with RT, as reflected by Annexin V staining, expression of apoptosis-related factors, mitochondrial damages as well as cell morphological changes and reduction of cell numbers. In addition, ALA significantly enhanced radiation-induced cellular senescence, which was shown by increased HMGB1 expression in the cytosol fraction compared to the control, increased p53 expression compared to the control, activation of p38 as well as nuclear factor кB, and G2/M cell cycle arrest.
Conclusion
The current study is the first report showing a new mode of action (senescence induction) of ALA beyond apoptotic cell death in MDA-MB-231 cancer cells known to be resistant to RT.
5.Acute Cholecystitis in Elderly Patients after Hip Fracture: a Nationwide Cohort Study
Suk Yong JANG ; Yong Han CHA ; Yun Su MUN ; Sang Ha KIM ; Ha Yong KIM ; Won Sik CHOY
Journal of Korean Medical Science 2019;34(5):e36-
BACKGROUND: Because acute cholecystitis in elderly hip fracture is not easily distinguishable from other gastrointestinal symptoms and involves atypical clinical behaviors, it may not be diagnosed in the early stage. However, the exact incidences could not be reported. We utilized data from a nationwide claims database and attempted to assess the incidence of acute cholecystitis in elderly hip fracture patients and how cholecystitis affects mortality rates after hip fracture. METHODS: Study subjects were from the Korean National Health Insurance Service-Senior cohort. From a population of approximately 5.5 million Korean enrollees > 60 years of age in 2002, a total of 588,147 participants were randomly selected using 10% simple random sampling. The subjects included in this study were those who were over 65 years old and underwent surgery for hip fractures. RESULTS: A total of 15,210 patients were enrolled in the cohort as hip fracture patients. There were 7,888 cases (51.9%) of femoral neck fracture and 7,443 (48.9%) cases of hemiarthroplasty. Thirty-six patients developed acute cholecystitis within 30 days after the index date (30-day cumulative incidence, 0.24%). Four of the 36 acute cholecystitis patients (11.1%) died within 30 days versus 2.92% of patients without acute cholecystitis. In the multivariate-adjusted Poisson regression model, hip fracture patients with incident acute cholecystitis were 4.35 (adjusted risk ratio 4.35; 95% confidence interval, 1.66–11.37; P = 0.003) times more likely to die within 30 days than those without acute cholecystitis. CONCLUSION: Incidence of acute cholecystitis in elderly patients after hip fracture within 30 days after the index date was 0.24%. Acute cholecystitis in elderly hip fracture patients dramatically increases the 30-day mortality rate by 4.35-fold. Therefore, early disease detection and management are crucial for patients.
Abdominal Pain
;
Aged
;
Cholecystitis
;
Cholecystitis, Acute
;
Cohort Studies
;
Femoral Neck Fractures
;
Hemiarthroplasty
;
Hip Fractures
;
Hip
;
Humans
;
Incidence
;
Mortality
;
National Health Programs
;
Odds Ratio
6. The Strategies to Address Regional Health Inequalities in Gyeongsangnam-Do: Health Plus Happiness Plus Projects.
Baek Geun JEONG ; Jang Rak KIM ; Yune Sik KANG ; Ki Soo PARK ; Jin Hyang LEE ; Sun Rae JO ; Gi Deok SEO ; Sang Jun JOO ; Eun Suk OH ; Seung Jin KIM ; Seong Jin JO ; Seung Mi KIM ; Dong Mun YEUM ; Mi Young SIM
Journal of Agricultural Medicine & Community Health 2012;37(1):36-51
OBJECTIVES: This study was conducted to implement Health Plus Happiness Plus projects in Gyeongsangnam-Do and assess the policy implications of initiatives to address regional health inequalities. METHODS: Health Plus Happiness Plus projects were started as strategies to address regional health inequalities in Gyeongsangnam-Do. The principles of these projects are taken from the Health Action Zones initiatives in England: participation, partnership, resource concentration in project areas. The time period for these projects is from 2010 to 2017, and the total budget is 5.6 billion won. In 2010, a 6.8 hundred million won total budget was invested in 17 project areas. Such investments fell into four broad categories: establishment of the means and local framework; survey development to analyze the health determinants; development of an education and training center; and establishment of a technical support center. RESULTS: Education and training programs for practitioners and coordinators were provided, and project teams and project promotion committees were established in project areas. Health survey result briefing meetings were held, and 17 health committees were established in project areas. CONCLUSIONS: Health Plus Happiness Plus projects have some problems in relation to participation and partnerships, however, if these principled projects are performed continuously, they will contribute to a reduction of standardized mortality rate and regional health inequalities in Gyeongsangnam-Do and the improvement of residents' well-being in project areas.
Budgets
;
Happiness
;
Health Surveys
;
Investments
;
Socioeconomic Factors
7.Determination of Malignant and Invasive Predictors in Branch Duct Type Intraductal Papillary Mucinous Neoplasms of the Pancreas: A Suggested Scoring Formula.
Dae Wook HWANG ; Jin Young JANG ; Chang Sup LIM ; Seung Eun LEE ; Yoo Seok YOON ; Young Joon AHN ; Ho Seong HAN ; Sun Whe KIM ; Sang Geol KIM ; Young Kook YUN ; Seong Sik HAN ; Sang Jae PARK ; Tae Jin LIM ; Koo Jung KANG ; Mun Sup SIM ; Seong Ho CHOI ; Jin Seok HEO ; Dong Wook CHOI ; Kyung Yul HUR ; Dong Shik LEE ; Sung Su YUN ; Hong Jin KIM ; Chul Kyoon CHO ; Hyun Jong KIM ; Hee Chul YU ; Baik Hwan CHO ; In Sang SONG
Journal of Korean Medical Science 2011;26(6):740-746
Prediction of malignancy or invasiveness of branch duct type intraductal papillary mucinous neoplasm (Br-IPMN) is difficult, and proper treatment strategy has not been well established. The authors investigated the characteristics of Br-IPMN and explored its malignancy or invasiveness predicting factors to suggest a scoring formula for predicting pathologic results. From 1994 to 2008, 237 patients who were diagnosed as Br-IPMN at 11 tertiary referral centers in Korea were retrospectively reviewed. The patients' mean age was 63.1 +/- 9.2 yr. One hundred ninty-eight (83.5%) patients had nonmalignant IPMN (81 adenoma, 117 borderline atypia), and 39 (16.5%) had malignant IPMN (13 carcinoma in situ, 26 invasive carcinoma). Cyst size and mural nodule were malignancy determining factors by multivariate analysis. Elevated CEA, cyst size and mural nodule were factors determining invasiveness by multivariate analysis. Using the regression coefficient for significant predictors on multivariate analysis, we constructed a malignancy-predicting scoring formula: 22.4 (mural nodule [0 or 1]) + 0.5 (cyst size [mm]). In invasive IPMN, the formula was expressed as invasiveness-predicting score = 36.6 (mural nodule [0 or 1]) + 32.2 (elevated serum CEA [0 or 1]) + 0.6 (cyst size [mm]). Here we present a scoring formula for prediction of malignancy or invasiveness of Br-IPMN which can be used to determine a proper treatment strategy.
Adenocarcinoma, Mucinous/*pathology
;
Adult
;
Aged
;
Aged, 80 and over
;
Carcinoembryonic Antigen/blood
;
Carcinoma, Pancreatic Ductal/*pathology
;
Carcinoma, Papillary/*pathology
;
Female
;
Humans
;
Magnetic Resonance Imaging
;
Male
;
Middle Aged
;
Multivariate Analysis
;
Neoplasm Invasiveness
;
Neoplasm Staging
;
Pancreatic Neoplasms/*pathology
;
Predictive Value of Tests
;
ROC Curve
;
Tomography, X-Ray Computed
8.A Case of a Pancreaticogastric Fistula Following Acute Pancreatitis.
Jae Sung YOUN ; Hyeuk PARK ; Min Geun LEE ; Woo Jong KIM ; Jang Sik MUN ; Bo Hyun MYOUNG ; Do Hyun KIM ; Ho Dong KIM
Korean Journal of Gastrointestinal Endoscopy 2011;42(4):245-249
A pancreatic fistula (PF) is an abnormal connection between the pancreas and adjacent or distant organs, structures, or spaces resulting from leakage of pancreatic secretions from disrupted pancreatic ducts. A PF is a rare complication that occurs during a acute and chronic pancreatitis or after traumatic or surgical disruption of the pancreatic duct. PFs are frequently classified as internal or external depending upon whether they communicate with an internal organ or the skin. Pancreatico- colonic fistulas are the most common, whereas pancreatico-gastric fistulas are the rarest. We report a rare case of a pancreatico-gastric fistula complicated by acute pancreatitis.
Colon
;
Fistula
;
Pancreas
;
Pancreatic Ducts
;
Pancreatic Fistula
;
Pancreatitis
;
Pancreatitis, Chronic
;
Skin
9.Steroid Responsive Pancreatic Mass-Forming Type 2 Autoimmune Pancreatitis.
Yeon Joo CHUN ; Jae Hyuck CHANG ; In Seok LEE ; Jang Eun LEE ; Mun Kyung CHUNG ; Chan Kwon JUNG ; Myung Gyu CHOI ; In Sik CHUNG
The Korean Journal of Gastroenterology 2011;58(1):53-57
Autoimmune pancreatitis (AIP) has two distinct subsets. Type 1 AIP or lymphoplasmacytic sclerosing pancreatitis is systemic disease with the elevation in serum levels of the IgG4. Type 2 AIP, also called duct-centric pancreatitis, features granulocyte epithelial lesions with duct obstruction in the pancreas without systemic involvement. Here, we report a case of type 2 AIP diagnosed by pathology, which is the first report in Korea. The case is a 56-year-old woman who presented with anorexia and vomiting. Computed tomography revealed mass-like lesion in the pancreatic head and the compression of the distal common bile duct and the head portion of the main pancreatic duct. Serum levels of the IgG4 were normal. Histologic examination revealed a dense neutrophil infiltration in the pancreatic parenchyme associated with extensive fibrosis, thereby confirming the diagnosis of type 2 AIP. The abnormalities in the clinical, laboratory, and radiological findings improved after oral steroid treatment.
Autoimmune Diseases/blood/immunology/*pathology
;
Female
;
Fibrosis
;
Humans
;
Immunoglobulin G/blood
;
Magnetic Resonance Imaging
;
Middle Aged
;
Neutrophils/immunology
;
Pancreas/pathology
;
Pancreatitis/*drug therapy/immunology/pathology
;
Steroids/*therapeutic use
;
Tomography, X-Ray Computed
10.A case of autoimmune hepatitis accompanied by systemic lupus erythematosus.
Young Jun HWANG ; Hong Myung JUNG ; Hyeuk PARK ; Jang Sik MUN ; Bo Hyun MYUNG ; Do Hyun KIM ; Ho Dong KIM
Korean Journal of Medicine 2010;78(1):95-98
Autoimmune hepatitis accompanied by systemic erythematosus lupus is rare. Usually, lupus-related advanced liver involvement is indistinguishable from autoimmune hepatitis accompanied by lupus, as they share common clinical, biochemical, serological, and histological manifestations. However, each disease has its own diagnostic criteria, and they have been defined as two different categories. Therefore, distinguishing between the two diseases is important to determine the correct diagnosis and treatment. A 41-year-old woman was hospitalized with jaundice and a malar rash. The patient met the diagnostic criteria of both systemic erythematosus lupus and autoimmune hepatitis. After corticosteroid treatment, the patient's condition improved. Therefore, we report our experience of a rare case of autoimmune hepatitis accompanied by systemic erythematosus lupus with a review of the literature.
Adult
;
Exanthema
;
Female
;
Hepatitis
;
Hepatitis, Autoimmune
;
Humans
;
Jaundice
;
Liver
;
Lupus Erythematosus, Systemic

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