1.2022 Seoul Consensus on Clinical Practice Guidelines for Functional Constipation
Young Sin CHO ; Yoo Jin LEE ; Jeong Eun SHIN ; Hye-Kyung JUNG ; Seon-Young PARK ; Seung Joo KANG ; Kyung Ho SONG ; Jung-Wook KIM ; Hyun Chul LIM ; Hee Sun PARK ; Seong-Jung KIM ; Ra Ri CHA ; Ki Bae BANG ; Chang Seok BANG ; Sung Kyun YIM ; Seung-Bum RYOO ; Bong Hyeon KYE ; Woong Bae JI ; Miyoung CHOI ; In-Kyung SUNG ; Suck Chei CHOI ;
Journal of Neurogastroenterology and Motility 2023;29(3):271-305
		                        		
		                        			
		                        			 Chronic constipation is one of the most common digestive diseases encountered in clinical practice. Constipation manifests as a variety of symptoms, such as infrequent bowel movements, hard stools, feeling of incomplete evacuation, straining at defecation, a sense of anorectal blockage during defecation, and use of digital maneuvers to assist defecation. During the diagnosis of chronic constipation, the Bristol Stool Form Scale, colonoscopy, and a digital rectal examination are useful for objective symptom evaluation and differential diagnosis of secondary constipation. Physiological tests for functional constipation have complementary roles and are recommended for patients who have failed to respond to treatment with available laxatives and those who are strongly suspected of having a defecatory disorder. As new evidence on the diagnosis and management of functional constipation emerged, the need to revise the previous guideline was suggested. Therefore, these evidence-based guidelines have proposed recommendations developed using a systematic review and meta-analysis of the treatment options available for functional constipation. The benefits and cautions of new pharmacological agents (such as lubiprostone and linaclotide) and conventional laxatives have been described through a meta-analysis. The guidelines consist of 34 recommendations, including 3 concerning the definition and epidemiology of functional constipation, 9 regarding diagnoses, and 22 regarding managements. Clinicians (including primary physicians, general health professionals, medical students, residents, and other healthcare professionals) and patients can refer to these guidelines to make informed decisions regarding the management of functional constipation. 
		                        		
		                        		
		                        		
		                        	
2.Borderline Personality Pathology in Major Depressive Disorder, Bipolar I and II Disorder, and Its Relationship With Childhood Trauma
Ji Seon YOU ; Chan Woo LEE ; Ji Yoon PARK ; Yoonjeong JANG ; Hyeona YU ; Joohyun YOON ; Sarah Soonji KWON ; Sunghee OH ; Yun Seong PARK ; Hyun A RYOO ; Jong Hun LEE ; Daseul LEE ; Jakyung LEE ; Yeoju KIM ; Nayoung CHO ; Hong Kyu IHM ; C. Hyung Keun PARK ; Yeong Chan LEE ; Hong-Hee WON ; Hyo Shin KANG ; Ji Hyun BEAK ; Tae Hyon HA ; Woojae MYUNG
Psychiatry Investigation 2022;19(11):909-918
		                        		
		                        			 Objective:
		                        			Mood disorder and borderline personality pathology (BPP) are frequently comorbid and relate to childhood trauma. We investigated the relationship between childhood trauma and BPP features in mood disorder patients versus controls. 
		                        		
		                        			Methods:
		                        			A total of 488 mood disorder patients, particularly major depressive disorder (MDD), bipolar I disorder (BD I), and bipolar II disorder (BD II), and 734 controls were included. We examined between-group BPP-related differences and correlated between BPP and childhood trauma using the Childhood Trauma Questionnaire-Short Form (CTQ) and the Personality Assessment Inventory–Borderline Features Scale. 
		                        		
		                        			Results:
		                        			BD II patients showed significantly higher BPP. Emotional abuse and neglect were prominently associated with BPP, while affective instability and negative relationships exhibited a stronger association with childhood trauma. We also found a positive relationship between childhood trauma and BPP in MDD, BD I, and BD II patients. 
		                        		
		                        			Conclusion
		                        			The findings of the present study imply that BPP features are more likely to be found in patients with BD II than BD I or MDD. Mood disorder patients with severe childhood trauma may have higher BPP features. Thus, further study of the relationship between childhood trauma and BPP features could improve the therapeutic approaches and help understand patients with mood disorders. 
		                        		
		                        		
		                        		
		                        	
3.Long-term follow-up results of cytarabine-containing chemotherapy for acute promyelocytic leukemia
Young Hoon PARK ; Dae-Young KIM ; Yeung-Chul MUN ; Eun Kyung CHO ; Jae Hoon LEE ; Deog-Yeon JO ; Inho KIM ; Sung-Soo YOON ; Seon Yang PARK ; Byoungkook KIM ; Soo-Mee BANG ; Hawk KIM ; Young Joo MIN ; Jae Hoo PARK ; Jong Jin SEO ; Hyung Nam MOON ; Moon Hee LEE ; Chul Soo KIM ; Won Sik LEE ; So Young CHONG ; Doyeun OH ; Dae Young ZANG ; Kyung Hee LEE ; Myung Soo HYUN ; Heung Sik KIM ; Sung-Hyun KIM ; Hyukchan KWON ; Hyo Jin KIM ; Kyung Tae PARK ; Sung Hwa BAE ; Hun Mo RYOO ; Jung Hye CHOI ; Myung-Ju AHN ; Hwi-Joong YOON ; Sung-Hyun NAM ; Bong-Seog KIM ; Chu-Myong SEONG
The Korean Journal of Internal Medicine 2022;37(4):841-850
		                        		
		                        			 Background/Aims:
		                        			We evaluated the feasibility and long-term efficacy of the combination of cytarabine, idarubicin, and all-trans retinoic acid (ATRA) for treating patients with newly diagnosed acute promyelocytic leukemia (APL). 
		                        		
		                        			Methods:
		                        			We included 87 patients with newly diagnosed acute myeloid leukemia and a t(15;17) or promyelocytic leukemia/retinoic acid receptor alpha (PML-RARα) mutation. Patients received 12 mg/m2/day idarubicin intravenously for 3 days and 100 mg/m2/day cytarabine for 7 days, plus 45 mg/m2/day ATRA. Clinical outcomes included complete remission (CR), relapse-free survival (RFS), overall survival (OS), and the secondary malignancy incidence during a 20-year follow-up. 
		                        		
		                        			Results:
		                        			The CR, 10-year RFS, and 10-year OS rates were 89.7%, 94.1%, and 73.8%, respectively, for all patients. The 10-year OS rate was 100% for patients that achieved CR. Subjects were classified according to the white blood cell (WBC) count in peripheral blood at diagnosis (low-risk, WBC < 10,000/mm3; high-risk, WBC ≥ 10,000/mm3). The low-risk group had significantly higher RFS and OS rates than the high-risk group, but the outcomes were not superior to the current standard treatment (arsenic trioxide plus ATRA). Toxicities were similar to those observed with anthracycline plus ATRA, and higher than those observed with arsenic trioxide plus ATRA. The secondary malignancy incidence after APL treatment was 2.7%, among the 75 patients that achieved CR, and 5.0% among the 40 patients that survived more than 5 years after the APL diagnosis. 
		                        		
		                        			Conclusions
		                        			Adding cytarabine to anthracycline plus ATRA was not inferior to anthracycline plus ATRA alone, but it was not comparable to arsenic trioxide plus ATRA. The probability of secondary malignancy was low. 
		                        		
		                        		
		                        		
		                        	
4.Participants’ Satisfaction with the Atopic Dermatitis Education Program: Assessing the Impact of Each Content Using Structural Equation Modeling
Ji Hoon RYOO ; Seon Hwa LEE ; Hyun Ji LEE ; Joonsoo PARK ; Sung-Ae KIM ; Young Wook RYOO ; Dong Hoon SHIN ; Moo Kyu SUH ; Jun Young KIM ; Kyung Duck PARK ; Weon Ju LEE ; Seok-Jong LEE ; Do Won KIM ; Yong Hyun JANG
Annals of Dermatology 2021;33(3):237-244
		                        		
		                        			Background:
		                        			Only a few studies have tried to assess factors relevant to the satisfaction of the participants in atopic dermatitis (AD) educational programs. More systematic modeling of this issue is needed. 
		                        		
		                        			Objective:
		                        			To examine the benefit of a conjoint educational program for AD on patients and caregivers in a clinical setting. 
		                        		
		                        			Methods:
		                        			In a half-day educational program called “AD school”, 831 people (493 patients and 338 family members) participated for 8 years. Various educational and entertaining programs were provided. The on-site survey was administered to measure participants’ satisfaction and perception of the benefit. We applied structural equation modeling to identify the relations among satisfaction and perception. 
		                        		
		                        			Results:
		                        			A total of 209 family survey data was obtained and analyzed. The survey items were grouped into four categories. The categories were classified as individual education, group education, fun activity, and overall satisfaction (fun, benefit, intention to re-join and recommend to others). According to the model that we built, comprehensive group education was demonstrated to be the most relevant factor affecting overall satisfaction. 
		                        		
		                        			Conclusion
		                        			Our holistic approach would allow dermatologists to improve the efficacy of the conjoint educational program for AD.
		                        		
		                        		
		                        		
		                        	
5.Participants’ Satisfaction with the Atopic Dermatitis Education Program: Assessing the Impact of Each Content Using Structural Equation Modeling
Ji Hoon RYOO ; Seon Hwa LEE ; Hyun Ji LEE ; Joonsoo PARK ; Sung-Ae KIM ; Young Wook RYOO ; Dong Hoon SHIN ; Moo Kyu SUH ; Jun Young KIM ; Kyung Duck PARK ; Weon Ju LEE ; Seok-Jong LEE ; Do Won KIM ; Yong Hyun JANG
Annals of Dermatology 2021;33(3):237-244
		                        		
		                        			Background:
		                        			Only a few studies have tried to assess factors relevant to the satisfaction of the participants in atopic dermatitis (AD) educational programs. More systematic modeling of this issue is needed. 
		                        		
		                        			Objective:
		                        			To examine the benefit of a conjoint educational program for AD on patients and caregivers in a clinical setting. 
		                        		
		                        			Methods:
		                        			In a half-day educational program called “AD school”, 831 people (493 patients and 338 family members) participated for 8 years. Various educational and entertaining programs were provided. The on-site survey was administered to measure participants’ satisfaction and perception of the benefit. We applied structural equation modeling to identify the relations among satisfaction and perception. 
		                        		
		                        			Results:
		                        			A total of 209 family survey data was obtained and analyzed. The survey items were grouped into four categories. The categories were classified as individual education, group education, fun activity, and overall satisfaction (fun, benefit, intention to re-join and recommend to others). According to the model that we built, comprehensive group education was demonstrated to be the most relevant factor affecting overall satisfaction. 
		                        		
		                        			Conclusion
		                        			Our holistic approach would allow dermatologists to improve the efficacy of the conjoint educational program for AD.
		                        		
		                        		
		                        		
		                        	
6.Poly-L-Lactic Acid Increases Collagen Gene Expression and Synthesis in Cultured Dermal Fibroblast (Hs68) Through the p38 MAPK Pathway
Sung Ae KIM ; Hyo Seon KIM ; Jin Woong JUNG ; Sung Il SUH ; Young Wook RYOO
Annals of Dermatology 2019;31(1):97-100
		                        		
		                        			
		                        			No abstract available.
		                        		
		                        		
		                        		
		                        			Collagen
		                        			;
		                        		
		                        			Fibroblasts
		                        			;
		                        		
		                        			Gene Expression
		                        			;
		                        		
		                        			p38 Mitogen-Activated Protein Kinases
		                        			
		                        		
		                        	
7.Arginase II inhibition prevents interleukin-8 production through regulation of p38 MAPK phosphorylation activated by loss of mitochondrial membrane potential in nLDL-stimulated hAoSMCs
Bon Hyeock KOO ; Bong Gu YI ; Myeong Seon JEONG ; Seung Hea KWON ; Kwang Lae HOE ; Young Guen KWON ; Moo Ho WON ; Young Myeong KIM ; Sungwoo RYOO
Experimental & Molecular Medicine 2018;50(2):e438-
		                        		
		                        			
		                        			 Arginase inhibition exhibits beneficial effects in vascular endothelial and smooth muscle cells. In human aortic smooth muscle cells (hAoSMCs), native low-density lipoprotein (nLDL) induced the production of interleukin-8 (IL-8) that is involved in the pathogenesis of cardiovascular diseases. Therefore, we examined the effect of arginase inhibition on IL-8 production and the underlying mechanism. In hAoSMCs, reverse transcription–PCR, western blotting and immunocytochemistry with MitoTracker confirmed that arginase II was confined predominantly to mitochondria. The mitochondrial membrane potential (MMP) was assessed using tetramethylrhodamine ethyl ester. The MMP decreased upon nLDL stimulation but was restored upon arginase inhibition. MMP loss caused by nLDL was prevented by treatment with the intracellular Ca(2+) chelator BAPTA-AM. In mitochondrial Ca(2+) measurements using Rhod-2 AM, increased mitochondrial Ca(2+) levels by nLDL were inhibited upon preincubation with an arginase inhibitor. Among the polyamines, spermine, an arginase activity-dependent product, caused mitochondrial Ca(2+) movement. The nLDL-induced MMP change resulted in p38 mitogen-activated protein kinase (MAPK) phosphorylation and IL-8 production and was prevented by the arginase inhibitors BAPTA and ruthenium 360. In isolated AoSMCs from ApoE(−/−) mice fed a high-cholesterol diet, arginase activity, p38 MAPK phosphorylation, spermine and mitochondrial Ca(2+) levels and keratinocyte-derived chemokine (KC) production were increased compared with wild-type (WT) mice. However, in AoSMCs isolated from arginase II-null mice, increases in MMP and decreases in mitochondrial Ca(2+) levels were noted compared with WT and were associated with p38 MAPK activation and IL-8 production. These data suggest that arginase activity regulates the change in MMP through Ca(2+) uptake that is essential for p38 MAPK phosphorylation and IL-8 production. 
		                        		
		                        		
		                        		
		                        	
8.Korean Shock Society septic shock registry: a preliminary report.
Tae Gun SHIN ; Sung Yeon HWANG ; Gu Hyun KANG ; Won Young KIM ; Seung Mok RYOO ; Kyuseok KIM ; You Hwan JO ; Sung Phil CHUNG ; Young Seon JOO ; Jin Ho BEOM ; Sung Hyuk CHOI ; Young Hoon YOON ; Woon Yong KWON ; Tae Ho LIM ; Kap Su HAN ; Han Sung CHOI ; Gil Joon SUH
Clinical and Experimental Emergency Medicine 2017;4(3):146-153
		                        		
		                        			
		                        			OBJECTIVE: To evaluate the clinical characteristics, therapeutic interventions, and outcomes of patients with septic shock admitted to the emergency department (ED). METHODS: This study was a preliminary, descriptive analysis of a prospective, multi-center, observational registry of the EDs of 10 hospitals participating in the Korean Shock Society. Patients aged 19 years or older who had a suspected or confirmed infection and evidence of refractory hypotension or hypoperfusion were included. RESULTS: A total of 468 patients were enrolled (median age, 71.3 years; male, 55.1%; refractory hypotension, 82.9%; hyperlactatemia without hypotension, 17.1%). Respiratory infection was the most common source of infection (31.0%). The median Sepsis-related Organ Failure Assessment score was 7.5. The sepsis bundle compliance was 91.2% for lactate measurement, 70.3% for blood culture, 68.4% for antibiotic administration, 80.3% for fluid resuscitation, 97.8% for vasopressor application, 68.0% for central venous pressure measurement, 22.0% for central venous oxygen saturation measurement, and 59.2% for repeated lactate measurement. Among patients who underwent interventions for source control (n=117, 25.1%), 43 (36.8%) received interventions within 12 hours of ED arrival. The in-hospital, 28-day, and 90-day mortality rates were 22.9%, 21.8%, and 27.1%, respectively. The median ED and hospital lengths of stay were 6.8 hours and 12 days, respectively. CONCLUSION: This preliminary report revealed a mortality of over 20% in patients with septic shock, which suggests that there are areas for improvement in terms of the quality of initial resuscitation and outcomes of septic shock patients in the ED.
		                        		
		                        		
		                        		
		                        			Central Venous Pressure
		                        			;
		                        		
		                        			Compliance
		                        			;
		                        		
		                        			Emergency Service, Hospital
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Hyperlactatemia
		                        			;
		                        		
		                        			Hypotension
		                        			;
		                        		
		                        			Lactic Acid
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Mortality
		                        			;
		                        		
		                        			Oxygen
		                        			;
		                        		
		                        			Patient Care Bundles
		                        			;
		                        		
		                        			Prospective Studies
		                        			;
		                        		
		                        			Resuscitation
		                        			;
		                        		
		                        			Sepsis
		                        			;
		                        		
		                        			Shock*
		                        			;
		                        		
		                        			Shock, Septic*
		                        			
		                        		
		                        	
9.Assessing the accuracy and reliability of ultrasonographic three-dimensional parathyroid volume measurement in a patient with secondary hyperparathyroidism: a comparison with the two-dimensional conventional method.
Sung Hye YOU ; Sang Il SUH ; In Seon RYOO ; Gyu Ri SON ; Young Hen LEE ; Hyung Suk SEO ; Nam Joon LEE ; Hae Young SEOL
Ultrasonography 2017;36(1):17-24
		                        		
		                        			
		                        			PURPOSE: The purpose of this study was to investigate the accuracy and reliability of the semi-automated ultrasonographic volume measurement tool, virtual organ computer-aided analysis (VOCAL), for measuring the volume of parathyroid glands. METHODS: Volume measurements for 40 parathyroid glands were performed in patients with secondary hyperparathyroidism caused by chronic renal failure. The volume of the parathyroid glands was measured twice by experienced radiologists by two-dimensional (2D) and three-dimensional (3D) methods using conventional sonograms and the VOCAL with 30°angle increments before parathyroidectomy. The specimen volume was also measured postoperatively. Intraclass correlation coefficients (ICCs) and the absolute percentage error were used for estimating the reproducibility and accuracy of the two different methods. RESULTS: The ICC value between two measurements of the 2D method and the 3D method was 0.956 and 0.999, respectively. The mean absolute percentage error of the 2D method and the 3D VOCAL technique was 29.56% and 5.78%, respectively. For accuracy and reliability, the plots of the 3D method showed a more compact distribution than those of the 2D method on the Bland-Altman graph. CONCLUSION: The rotational VOCAL method for measuring the parathyroid gland is more accurate and reliable than the conventional 2D measurement. This VOCAL method could be used as a more reliable follow-up imaging modality in a patient with hyperparathyroidism.
		                        		
		                        		
		                        		
		                        			Follow-Up Studies
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Hyperparathyroidism
		                        			;
		                        		
		                        			Hyperparathyroidism, Secondary*
		                        			;
		                        		
		                        			Imaging, Three-Dimensional
		                        			;
		                        		
		                        			Kidney Failure, Chronic
		                        			;
		                        		
		                        			Methods*
		                        			;
		                        		
		                        			Organ Size
		                        			;
		                        		
		                        			Parathyroid Glands
		                        			;
		                        		
		                        			Parathyroidectomy
		                        			;
		                        		
		                        			Ultrasonography
		                        			
		                        		
		                        	
10.Comparison of Clinical Feature and Prognosis between Unilateral and Bilateral Acute Pyelonephritis.
Hyun Woo KIM ; Seung Mok RYOO ; Shin AHN ; Chang Hwan SOHN ; Dong Woo SEO ; Yoon Seon LEE ; Jae Ho LEE ; Bum Jin OH ; Kyung Soo LIM ; Won Young KIM
Journal of the Korean Society of Emergency Medicine 2016;27(4):320-327
		                        		
		                        			
		                        			PURPOSE: Acute pyelonephritis (APN) usually presents as a mild disease. However, it has been shown to cause substantial morbidity and mortality on occasion. Therefore, it is important to distinguish between the complicated and uncomplicated APN. The purpose of this study was to determine the clinical significance of bilateral APN compared with unilateral APN in the emergency department (ED). METHODS: We analyzed the data of 303 consecutive patients with APN who underwent a abdominal computed tomography (CT) examination in the ED from January 2012 to December 2014. We compared the clinical presentation, progress, and outcomes between the unilateral and bilateral APNs that were identified on the CT scan. RESULTS: Of these 303 patients, 110 patients (36.3%) were confirmed as bilateral APN by the CT. The proportion of male was higher in the bilateral APN group (20.0% vs. 10.9%, p=0.029). Moreover, patients in the bilateral group visited the ED post symptom onset (6.5±7.8 vs. 3.6±3.1, p<0.001). However, symptom, sign, laboratory test, and CT findings were not statistically different between the two groups. In addition, severity, resistant pathogen, and outcomes such as occurrence of septic shock, hospital days, and mortality were also not different. CONCLUSION: This study suggests that bilateral APN, as determined by a CT, does not have clinical significance compared with unilateral APN.
		                        		
		                        		
		                        		
		                        			Emergency Service, Hospital
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Mortality
		                        			;
		                        		
		                        			Prognosis*
		                        			;
		                        		
		                        			Pyelonephritis*
		                        			;
		                        		
		                        			Shock, Septic
		                        			;
		                        		
		                        			Tomography, X-Ray Computed
		                        			
		                        		
		                        	
            
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