1.Comparison of COVID-19-associated multisystem inflammatory syndrome in children (MIS-C) and Kawasaki disease shock syndrome: case reports and literature review
Songmi LEE ; Danbi KIM ; Beom Joon KIM ; Jung Woo RHIM ; Soo-Young LEE ; Dae Chul JEONG
Journal of Rheumatic Diseases 2023;30(4):272-277
Multisystem inflammatory syndrome in children (MIS-C) is a serious post-infectious complication of COVID-19 characterized by hyperinflammation and multi-organ dysfunction including shock. Shock is also seen in a severe form of Kawasaki disease (KD) called KD shock syndrome (KDSS). Here, we present one MIS-C and one KDSS case and compare similarities and differences between them. Both MIS-C (case 1) and KDSS (case 2) showed hyperinflammation, KD-related features, gastrointestinal problems, hypotension, and coagulopathy. The extent of systemic inflammation and organ dysfunction was more severe in KDSS than in MIS-C. Case 1 was diagnosed as MIS-C because SARS-CoV-2 was confirmed, and case 2 was diagnosed as KDSS because no pathogen was identified in microbiological studies. We believe that the most important difference between MIS-C and KDSS was whether SARS-CoV-2 was identified as an infectious trigger. Organ dysfunction is a hallmark of MIS-C and KDSS, but not KD, so MIS-C shares more clinical phenotypes with KDSS than with KD. Comparison of MIS-C and KDSS will be an interesting and important topic in the field of KD-like hyperinflammatory disease research.
2.The nature of triple-negative breast cancer classification and antitumoral strategies
Songmi KIM ; Dong Hee KIM ; Wooseok LEE ; Yong-Moon LEE ; Song-Yi CHOI ; Kyudong HAN
Genomics & Informatics 2020;18(4):e35-
Identifying the patterns of gene expression in breast cancers is essential to understanding their pathophysiology and developing anticancer drugs. Breast cancer is a heterogeneous disease with different subtypes determined by distinct biological features. Luminal breast cancer is characterized by a relatively high expression of estrogen receptor (ER) and progesterone receptor (PR) genes, which are expressed in breast luminal cells. In ~25% of invasive breast cancers, human epidermal growth factor receptor 2 (HER2) is overexpressed; these cancers are categorized as the HER2 type. Triple-negative breast cancer (TNBC), in which the cancer cells do not express ER/PR or HER2, shows highly aggressive clinical outcomes. TNBC can be further classified into specific subtypes according to genomic mutations and cancer immunogenicity. Herein, we discuss the brief history of TNBC classification and its implications for promising treatments.
3.The nature of triple-negative breast cancer classification and antitumoral strategies
Songmi KIM ; Dong Hee KIM ; Wooseok LEE ; Yong-Moon LEE ; Song-Yi CHOI ; Kyudong HAN
Genomics & Informatics 2020;18(4):e35-
Identifying the patterns of gene expression in breast cancers is essential to understanding their pathophysiology and developing anticancer drugs. Breast cancer is a heterogeneous disease with different subtypes determined by distinct biological features. Luminal breast cancer is characterized by a relatively high expression of estrogen receptor (ER) and progesterone receptor (PR) genes, which are expressed in breast luminal cells. In ~25% of invasive breast cancers, human epidermal growth factor receptor 2 (HER2) is overexpressed; these cancers are categorized as the HER2 type. Triple-negative breast cancer (TNBC), in which the cancer cells do not express ER/PR or HER2, shows highly aggressive clinical outcomes. TNBC can be further classified into specific subtypes according to genomic mutations and cancer immunogenicity. Herein, we discuss the brief history of TNBC classification and its implications for promising treatments.
4.Significance of elevated SCC-Ag level on tumor recurrence and patient survival in patients with squamous-cell carcinoma of uterine cervix following definitive chemoradiotherapy: a multi-institutional analysis.
Kyu Hye CHOI ; Sea Won LEE ; Mina YU ; Songmi JEONG ; Jeong Won LEE ; Jong Hoon LEE
Journal of Gynecologic Oncology 2019;30(1):e1-
OBJECTIVE: There is no definitive guideline for the significance and cut-off value of squamous-cell carcinoma antigen (SCC-Ag) in cervical cancer. Thus, we analyzed the significance and optimal cut-off value of SCC-Ag for predicting tumor recurrence and patient survival in squamous-cell carcinoma of uterine cervix. METHODS: From January 2010 to October 2016, we enrolled 304 cervical cancer patients with squamous-cell carcinoma staging International Federation of Gynecology and Obstetrics (FIGO) Ib–IVa and treated with definitive chemoradiotherapy (CRT) followed by intra-cavitary radiotherapy (ICR). The cut-off value of SCC-Ag level for tumor recurrence was calculated using the receiver operating characteristic (ROC) curve. The recurrence-free survival (RFS) and overall survival (OS) were assessed using Kaplan-Meier method to estimate the significance of SCC-Ag level. RESULTS: The optimal cut-off value of SCC-Ag level for predicting tumor recurrence was calculated and set at 4.0 ng/mL in the ROC curve. After a median follow-up period of 36.5 months, the 3-year RFS (56.6% vs. 80.2%, p < 0.001) and OS (72.1% vs. 86.8%, p=0.005) were significantly lower in SCC-Ag ≥4 ng/mL arm than in < 4 ng/mL arm. The 3-year locoregional recurrence (17.6% vs. 7.0%, p=0.012), distant metastasis (20.4% vs. 6.9%, p=0.002), and para-aortic recurrence (9.4% vs. 2.1%, p=0.012) rates were significantly higher in SCC-Ag ≥4 ng/mL arm than in SCC-Ag < 4 ng/mL arm. CONCLUSION: Pre-treatment SCC-Ag level higher than 4 ng/mL may be a useful predictor of tumor recurrence in patients with squamous-cell carcinoma of uterine cervix treated with definitive CRT and ICR.
Arm
;
Cervix Uteri*
;
Chemoradiotherapy*
;
Female
;
Follow-Up Studies
;
Gynecology
;
Humans
;
Methods
;
Neoplasm Metastasis
;
Obstetrics
;
Radiotherapy
;
Recurrence*
;
ROC Curve
;
Uterine Cervical Neoplasms
5.Value of imaging study in predicting pelvic lymph node metastases of uterine cervical cancer.
Wonguen JUNG ; Kyung Ran PARK ; Kyung Ja LEE ; Kyubo KIM ; Jihae LEE ; Songmi JEONG ; Yi Jun KIM ; Jiyoung KIM ; Hai Jeon YOON ; Byung Chul KANG ; Hae Soo KOO ; Sun Hee SUNG ; Min Sun CHO ; Sanghui PARK
Radiation Oncology Journal 2017;35(4):340-348
PURPOSE: To evaluate the diagnostic accuracy of computed tomography (CT), magnetic resonance imaging (MRI), and positron emission tomography/computed tomography (PET/CT) in predicting pelvic lymph node (LN) metastases in patients with cervical cancer. MATERIALS AND METHODS: From January 2009 to March 2015, 114 patients with FIGO stage IA1-IIB uterine cervical cancer who underwent hysterectomy with pelvic lymphadenectomy and took CT, MRI, and PET/CT before surgery were enrolled in this study. The criteria for LN metastases were a LN diameter ≥1.0 cm and/or the presence of central necrosis on CT, a LN diameter ≥1.0 cm on MRI, and a focally increased FDG uptake on PET/CT. The sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy for pelvic LN metastases were estimated. RESULTS: The sensitivity, specificity, PPV, NPV, and accuracy for detection of pelvic LN metastases were 51.4%, 85.9%, 41.3%, 90.1%, and 80.3% for CT; 24.3%, 96.3%, 56.3%, 86.8%, and 84.6% for MRI; and 48.6%, 89.5%, 47.4%, 90.0%, and 82.9% for PET/CT, respectively. The sensitivity of PET/CT and CT was higher than that of MRI (p=0.004 and p= 0.013, respectively). The specificity of MRI was higher than those of PET/CT and CT (p=0.002 and p=0.001, respectively). The difference of specificity between PET/CT and CT was not statistically significant (p=0.167). CONCLUSION: These results indicate that preoperative CT, MRI, and PET/CT showed low to moderate sensitivity and PPV, and moderate to high specificity, NPV, and accuracy. More efforts are necessary to improve sensitivity of imaging modalities in order to predict pelvic LN metastases.
Electrons
;
Humans
;
Hysterectomy
;
Lymph Node Excision
;
Lymph Nodes*
;
Magnetic Resonance Imaging
;
Necrosis
;
Neoplasm Metastasis*
;
Positron-Emission Tomography
;
Positron-Emission Tomography and Computed Tomography
;
Sensitivity and Specificity
;
Uterine Cervical Neoplasms*
6.The effect of duck meat treated with turmeric powder intake on the postprandial blood lipid profiles in female university students.
Journal of Nutrition and Health 2016;49(2):80-87
PURPOSE: This study examined the effects of duck meats with turmeric powder on blood lipids in 10 female university students. METHODS: The subjects received duck meat with 0%, 0.1%, 0.2%, and 0.4% turmeric powder and glucose, total cholesterol, triglyceride (TG), high-density lipoprotein (HDL)-cholesterol, and low-density lipoprotein (LDL)-cholesterol in their serums after 30, 60, 90, 120, and 180 min were measured. RESULTS: The average height, weight, and body mass index of subjects were 159.6 ± 2.6 cm, 51.3 ± 3.5 kg, and 20.1 ± 1.0, respectively. The fasting glucose, γ-glutamyl transferase (GGT), glutamic pyruvic transferase (GPT), glutamic oxaloacetic transferase (GOT), c-reactive protein (CRP), and hemoglobin were within the normal range. The Δ-AUC (area under the curve) of postprandial glucose, TG did not change, but Δ-AUC of postprandial total cholesterol and LDL were significantly decreased, and HDL was increased by intake of the duck meat with turmeric powder. CONCLUSION: This study shows that duck meats with turmeric powder affected the postprandial blood lipid levels.
Body Mass Index
;
C-Reactive Protein
;
Cholesterol
;
Curcuma*
;
Ducks*
;
Fasting
;
Female*
;
Glucose
;
Humans
;
Lipoproteins
;
Meat*
;
Reference Values
;
Transferases
;
Triglycerides
7.Structural Variation of Alu Element and Human Disease.
Songmi KIM ; Chun Sung CHO ; Kyudong HAN ; Jungnam LEE
Genomics & Informatics 2016;14(3):70-77
Transposable elements are one of major sources to cause genomic instability through various mechanisms including de novo insertion, insertion-mediated genomic deletion, and recombination-associated genomic deletion. Among them is Alu element which is the most abundant element, composing ~10% of the human genome. The element emerged in the primate genome 65 million years ago and has since propagated successfully in the human and non-human primate genomes. Alu element is a non-autonomous retrotransposon and therefore retrotransposed using L1-enzyme machinery. The 'master gene' model has been generally accepted to explain Alu element amplification in primate genomes. According to the model, different subfamilies of Alu elements are created by mutations on the master gene and most Alu elements are amplified from the hyperactive master genes. Alu element is frequently involved in genomic rearrangements in the human genome due to its abundance and sequence identity between them. The genomic rearrangements caused by Alu elements could lead to genetic disorders such as hereditary disease, blood disorder, and neurological disorder. In fact, Alu elements are associated with approximately 0.1% of human genetic disorders. The first part of this review discusses mechanisms of Alu amplification and diversity among different Alu subfamilies. The second part discusses the particular role of Alu elements in generating genomic rearrangements as well as human genetic disorders.
Alu Elements*
;
DNA Transposable Elements
;
Genetic Diseases, Inborn
;
Genome
;
Genome, Human
;
Genomic Instability
;
Humans*
;
Nervous System Diseases
;
Primates
;
Recombination, Genetic
;
Retroelements
8.Setup Error and Effectiveness of Weekly Image-Guided Radiation Therapy of TomoDirect for Early Breast Cancer.
Mi Joo CHUNG ; Guk Jin LEE ; Young Jin SUH ; Hyo Chun LEE ; Sea Won LEE ; Songmi JEONG ; Jeong Won LEE ; Sung Hwan KIM ; Dae Gyu KANG ; Jong Hoon LEE
Cancer Research and Treatment 2015;47(4):774-780
PURPOSE: This study investigated setup error and effectiveness of weekly image-guided radiotherapy (IGRT) of TomoDirect for early breast cancer. MATERIALS AND METHODS: One hundred and fifty-one breasts of 147 consecutive patients who underwent breast conserving surgery followed by whole breast irradiation using TomoDirect in 2012 and 2013 were evaluated. All patients received weekly IGRT. The weekly setup errors from simulation to each treatment in reference to chest wall and surgical clips were measured. Random, systemic, and 3-dimensional setup errors were assessed. Extensive setup error was defined as 5 mm above the margin in any directions. RESULTS: All mean errors were within 3 mm of all directions. The mean angle of gantry shifts was 0.6degrees. The mean value of absolute 3-dimensional setup error was 4.67 mm. In multivariate analysis, breast size (odds ratio, 2.82; 95% confidence interval, 1.00 to 7.90) was a significant factor for extensive error. The largest significant deviation of setup error was observed in the first week of radiotherapy (p < 0.001) and the deviations gradually decreased with time. The deviation of setup error was 5.68 mm in the first week and within 5 mm after the second week. CONCLUSION: In this study, there was a significant association between breast size and significant setup error in breast cancer patients who received TomoDirect. The largest deviation occurred in the first week of treatment. Therefore, patients with large breasts should be closely observed on every fraction and fastidious attention is required in the first fraction of IGRT.
Breast Neoplasms*
;
Breast*
;
Humans
;
Mastectomy, Segmental
;
Multivariate Analysis
;
Radiotherapy
;
Radiotherapy Setup Errors
;
Radiotherapy, Image-Guided*
;
Surgical Instruments
;
Thoracic Wall
9.Screening Molecular Chaperones Similar to Small Heat Shock Proteins in Schizosaccharomyces pombe.
Jiyoung HAN ; Kanghwa KIM ; Songmi LEE
Mycobiology 2015;43(3):272-279
To screen molecular chaperones similar to small heat shock proteins (sHsps), but without alpha-crystalline domain, heat-stable proteins from Schizosaccharomyces pombe were analyzed by 2-dimensional electrophoresis and matrix assisted laser desorption/ionization time-of-flight mass spectrometry. Sixteen proteins were identified, and four recombinant proteins, including cofilin, NTF2, pyridoxin biosynthesis protein (Snz1) and Wos2 that has an alpha-crystalline domain, were purified. Among these proteins, only Snz1 showed the anti-aggregation activity against thermal denaturation of citrate synthase. However, pre-heating of NTF2 and Wos2 at 70degrees C for 30 min, efficiently prevented thermal aggregation of citrate synthase. These results indicate that Snz1 and NTF2 possess molecular chaperone activity similar to sHsps, even though there is no alpha-crystalline domain in their sequences.
alpha-Crystallins
;
Citrate (si)-Synthase
;
Electrophoresis
;
Heat-Shock Proteins, Small*
;
Mass Screening*
;
Mass Spectrometry
;
Molecular Chaperones*
;
Pyridoxine
;
Recombinant Proteins
;
Schizosaccharomyces*
10.A Case of POEMS Syndrome that Presented with a Moderate Pericardial Effusion.
Chang Myung OH ; Woo Dae BANG ; Sangkook LEE ; Sung Soo CHO ; Songmi NOH ; Jin Seok KIM ; Hyuk Jae CHANG
Korean Journal of Medicine 2011;81(2):245-250
Pericardial effusions can be caused by a wide variety of infectious or noninfectious diseases. After a conventional diagnostic work-up, the etiology of pericardial effusion often remains idiopathic. We report a patient with POEMS syndrome whose main clinical problem was recurrent pericardial effusions. Patients with POEMS syndrome often have generalized edema and a pleural effusion, while a pericardial effusion is a very rare complication. A 44-year-old man visited our hospital because of a recurrent pericardial effusion. He was initially diagnosed with idiopathic pericarditis five months prior. We reassessed the patient meticulously and found IgG lambda type monoclonal gammopathy, polyneuropathy, lymphadenopathy, peripheral edema, pleural effusion, hypothyroidism, pulmonary hypertension, hyperpigmentation, hypertrichosis, and papilledema, which we diagnosed as POEMS syndrome.
Adult
;
Edema
;
Humans
;
Hyperpigmentation
;
Hypertension, Pulmonary
;
Hypertrichosis
;
Hypothyroidism
;
Immunoglobulin G
;
Lymphatic Diseases
;
Papilledema
;
Paraproteinemias
;
Pericardial Effusion
;
Pericarditis
;
Pleural Effusion
;
POEMS Syndrome
;
Polyneuropathies

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