1.The impact of short-course total neoadjuvant therapy, long-course chemoradiotherapy, and upfront surgery on the technical difficulty of total mesorectal excision: an observational study with an intraoperative perspective
Cheryl Xi-Zi CHONG ; Frederick H. KOH ; Hui-Lin TAN ; Sharmini Su SIVARAJAH ; Jia-Lin NG ; Leonard Ming-Li HO ; Darius Kang-Lie AW ; Wen-Hsin KOO ; Shuting HAN ; Si-Lin KOO ; Connie Siew-Poh YIP ; Fu-Qiang WANG ; Fung-Joon FOO ; Winson Jianhong TAN
Annals of Coloproctology 2024;40(5):451-458
		                        		
		                        			 Purpose:
		                        			Total neoadjuvant therapy (TNT) is becoming the standard of care for locally advanced rectal cancer. However, surgery is deferred for months after completion, which may lead to fibrosis and increased surgical difficulty. The aim of this study was to assess whether TNT (TNT-RAPIDO) is associated with increased difficulty of total mesorectal excision (TME) compared with long-course chemoradiotherapy (LCRT) and upfront surgery. 
		                        		
		                        			Methods:
		                        			Twelve laparoscopic videos of low anterior resection with TME for rectal cancer were prospectively collected from January 2020 to October 2021, with 4 videos in each arm. Seven colorectal surgeons assessed the videos independently, graded the difficulty of TME using a visual analog scale and attempted to identify which category the videos belonged to. 
		                        		
		                        			Results:
		                        			The median age was 67 years, and 10 patients were male. The median interval to surgery from radiotherapy was 13 weeks in the LCRT group and 24 weeks in the TNT-RAPIDO group. There was no significant difference in the visual analog scale for difficulty in TME between the 3 groups (LCRT, 3.2; TNT-RAPIDO, 4.6; upfront, 4.1; P=0.12). A subgroup analysis showed similar difficulty between groups (LCRT 3.2 vs. TNT-RAPIDO 4.6, P=0.05; TNT-RAPIDO 4.6 vs. upfront 4.1, P=0.54). During video assessments, surgeons correctly identified the prior treatment modality in 42% of the cases. TNT-RAPIDO videos had the highest recognition rate (71%), significantly outperforming both LCRT (29%) and upfront surgery (25%, P=0.01). 
		                        		
		                        			Conclusion
		                        			TNT does not appear to increase the surgical difficulty of TME. 
		                        		
		                        		
		                        		
		                        	
2.Development and Validation of an Attitudinal-Profiling Tool for Patients With Asthma.
Aileen DAVID-WANG ; David PRICE ; Sang Heon CHO ; James Chung Man HO ; Chong Kin LIAM ; Glenn NEIRA ; Pei Li TEH
Allergy, Asthma & Immunology Research 2017;9(1):43-51
		                        		
		                        			
		                        			PURPOSE: To develop a profiling tool which accurately assigns a patient to the appropriate attitudinal cluster for the management of asthma. METHODS: Attitudinal data from an online survey of 2,467 patients with asthma from 8 Asian countries/region, aged 18-50 years, having had ≥2 prescriptions in the previous 2 years and access to social media was used in a discriminant function analysis to identify a minimal set of questions for the Profiling Tool. A split-sample procedure based on 100 sets of randomly selected estimation and validation sub-samples from the original sample was used to cross-validate the Tool and assess the robustness of its predictive accuracy. RESULTS: Our Profiling Tool contained 10 attitudinal questions for the patient and 1 GINA-based level of asthma control question for the physician. It achieved a predictive accuracy of 76.2%. The estimation and validation sub-sample accuracies of 76.7% and 75.3%, respectively, were consistent with the tool's predictive accuracy at 95% confidence level; and their 1.4 percentage-points difference set upper-bound estimate for the degree of over-fitting. CONCLUSIONS: The Profiling Tool is highly predictive (>75%) of the attitudinal clusters that best describe patients with asthma in the Asian population. By identifying the attitudinal profile of the patient, the physician can make the appropriate asthma management decisions in practice. The challenge is to integrate its use into the consultation workflow and apply to areas where Internet resources are not available or patients who are not comfortable with the use of such technology.
		                        		
		                        		
		                        		
		                        			Asia
		                        			;
		                        		
		                        			Asian Continental Ancestry Group
		                        			;
		                        		
		                        			Asthma*
		                        			;
		                        		
		                        			Discriminant Analysis
		                        			;
		                        		
		                        			Disease Management
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Internet
		                        			;
		                        		
		                        			Prescriptions
		                        			;
		                        		
		                        			Social Media
		                        			
		                        		
		                        	
3.The Effects of Different Substrates on the Growth, Yield, and Nutritional Composition of Two Oyster Mushrooms (Pleurotus ostreatus and Pleurotus cystidiosus).
Ha Thi HOA ; Chun Li WANG ; Chong Ho WANG
Mycobiology 2015;43(4):423-434
		                        		
		                        			
		                        			The study was conducted to compare the effects of different agro-wastes on the growth, yield, and nutritional composition of oyster mushrooms Pleurotus ostreatus (PO) and Pleurotus cystidiosus (PC). Seven substrate formulas including sawdust (SD), corncob (CC), sugarcane bagasse (SB) alone and in combination of 80 : 20, 50 : 50 ratio between SD and CC, SD and SB were investigated. The results indicated that different substrate formulas gave a significant difference in total colonization period, characteristics of fruiting bodies, yield, biological efficiency (BE), nutritional composition and mineral contents of two oyster mushrooms PO and PC. The results showed that increasing CC and SB reduced C/N ratio, and enhanced some mineral contents (Ca, P, and Mg) of substrate formulas. The increased amount of CC and SB of substrate formulas enhanced protein, ash, mineral contents (Ca, K, Mg, Mn, and Zn) of fruiting bodies of both mushrooms. Substrates with 100% CC and 100% SB were the most suitable substrate formulas for cultivation of oyster mushrooms PO and PC in which they gave the highest values of cap diameter, stipe thickness, mushroom weight, yield, BE, protein, fiber, ash, mineral content (Ca, K, and Mg) and short stipe length. However, substrate formula 100% CC gave the slowest time for the first harvest of both mushrooms PO and PC (46.02 days and 64.24 days, respectively). It is also found that the C/N ratio of substrate formulas has close correlation with total colonization period, mushroom weight, yield, BE and protein content of mushroom PO and PC.
		                        		
		                        		
		                        		
		                        			Agaricales
		                        			;
		                        		
		                        			Colon
		                        			;
		                        		
		                        			Fruit
		                        			;
		                        		
		                        			Ostreidae*
		                        			;
		                        		
		                        			Pleurotus*
		                        			;
		                        		
		                        			Saccharum
		                        			
		                        		
		                        	
4.Absolute configuration of podophyllotoxone and its inhibitory activity against human prostate cancer cells.
Juan LI ; Juan FENG ; Cheng LUO ; Ho-Yung Sung HERMAN ; Ren-Wang JIANG
Chinese Journal of Natural Medicines (English Ed.) 2015;13(1):59-64
		                        		
		                        			
		                        			Podophyllotoxone (1) was isolated from the roots of Dysosma versipellis. The structure was determined by spectroscopic analysis in combination with single-crystal X-ray analysis. The absolute configuration of compound 1 was assigned based on the Flack parameter. It showed significant inhibitory activities against human prostate cancer cells PC3 and DU145 with IC50 values being 14.7 and 20.6 μmol·L(-1), respectively. It also arrested the cells at G2/M phase. Tubulin polymerization assay showed that it inhibited the tubulin polymerization in a dose-dependent manner, and molecular docking analysis revealed a different binding mode with tubulin as compared with those known tubulin inhibitors.
		                        		
		                        		
		                        		
		                        			Antineoplastic Agents
		                        			;
		                        		
		                        			chemistry
		                        			;
		                        		
		                        			pharmacology
		                        			;
		                        		
		                        			Berberidaceae
		                        			;
		                        		
		                        			chemistry
		                        			;
		                        		
		                        			Cell Line, Tumor
		                        			;
		                        		
		                        			Dose-Response Relationship, Drug
		                        			;
		                        		
		                        			G2 Phase
		                        			;
		                        		
		                        			drug effects
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Hydrogen Bonding
		                        			;
		                        		
		                        			drug effects
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Molecular Conformation
		                        			;
		                        		
		                        			Molecular Docking Simulation
		                        			;
		                        		
		                        			Phytotherapy
		                        			;
		                        		
		                        			Plant Extracts
		                        			;
		                        		
		                        			chemistry
		                        			;
		                        		
		                        			pharmacology
		                        			;
		                        		
		                        			Plant Roots
		                        			;
		                        		
		                        			chemistry
		                        			;
		                        		
		                        			Podophyllotoxin
		                        			;
		                        		
		                        			chemistry
		                        			;
		                        		
		                        			pharmacology
		                        			;
		                        		
		                        			Polymerization
		                        			;
		                        		
		                        			Prostatic Neoplasms
		                        			;
		                        		
		                        			drug therapy
		                        			;
		                        		
		                        			Tubulin
		                        			;
		                        		
		                        			drug effects
		                        			;
		                        		
		                        			Tubulin Modulators
		                        			;
		                        		
		                        			pharmacology
		                        			
		                        		
		                        	
5.Are new resuscitation guidelines better? Experience of an Asian metropolitan hospital.
Shih Wen HUNG ; Chien Chih CHEN ; Hsin Chin SHIH ; Chang Feng HUANG ; Kuo Chih CHEN ; Chee Fah CHONG ; Tzong Luen WANG
Annals of the Academy of Medicine, Singapore 2010;39(7):569-567
INTRODUCTIONCardiopulmonary resuscitation (CPR) guidelines were revised in 2005 based on new evidence and expert consensus. However, the benefits of the new guidelines remain undetermined and their influence has not been published in Asia. This study aimed to evaluate the impact of implementing the new resuscitation guidelines and identify factors that influence the discharge survival of out-of-hospital cardiac arrest (OHCA) patients in an Asian metropolitan city.
MATERIALS AND METHODSThis was an observational cohort study of all OHCA patients seen by the emergency medical service during the period before (Nov 2003 to Oct 2005) and after (May 2006 to Oct 2008) implementing the new resuscitation guidelines. Detailed clinical information was recorded using the Ustein style template. Statistical analysis was done using X2 test or t-test for univariate analysis and the logistic regression model for multivariate analysis.
RESULTSThere were 463 patients before and 430 patients after the new guidelines who received resuscitation. The rate of recovery of spontaneous circulation (ROSC), survival-to-intensive care unit (ICU) admission, and survival-to-hospital discharge all showed no benefits regarding the new resuscitation guidelines (ROSC: 42% vs 39%, P = 0.32; Survival-to-ICU admission: 33% vs 30%, P = 0.27; survival-to-hospital discharge: 10% vs 7%, P = 0.09). The rate of ventricular fibrillation/pulseless ventricular tachycardia (VF/pulseless VT), rate of witnessed arrest, and rate of bystander CPR were much lower than in Western studies. After multivariate logistic regression, factors related to discharge survival were witnessed arrest and initial rhythm with VF/pulseless VT. The new resuscitation guidelines did not significantly influence the discharge survival.
CONCLUSIONSWe did not observe any improvement in survival after implementing the new guidelines. Independent factors of survival-to-hospital discharge are witnessed arrest and initial rhythm with VF/pulseless VT. Because the rates of VF/pulseless VT and bystander CPR in Asia are low, popularising CPR training programmes and increasing the rate of bystander CPR may be more important for improving OHCA survival rates than frequent guideline changes.
Aged ; Aged, 80 and over ; Cardiopulmonary Resuscitation ; methods ; standards ; Emergency Service, Hospital ; statistics & numerical data ; Female ; Hospitals, University ; statistics & numerical data ; Humans ; Male ; Middle Aged ; Out-of-Hospital Cardiac Arrest ; mortality ; therapy ; Patient Discharge ; statistics & numerical data ; Practice Guidelines as Topic ; Survival Analysis ; Taiwan ; epidemiology
6.A Case of Gastric Ectopic Pancreas Complicated by Pancreatitis and Pseudocyst Formation.
Joon Ho WANG ; Jae Dong LEE ; Chong Ju KIM ; Hyung Seok PARK ; Chun Jo JIN ; Mun Su KANG ; Hi Young SIN ; Keung Bin NO ; Keung Sub SONG ; Hwa Suk JUNG
Korean Journal of Gastrointestinal Endoscopy 2003;27(3):175-179
		                        		
		                        			
		                        			Ectopic pancreas rarely produces clinical symptoms. Most commonly reported symptoms were abdominal pain, epigastric discomfort, nausea, vomiting, and bleeding. However, presentation of specific symptoms due to its size and location, including obstructive jaundice, and pyloric obstruction are possible. Ectopic pancreas is subject to various pathological changes occurring in the pancreas itself; namely, cyst, pancreatitis, hemorrhage, necrosis, and neoplastic change. We present a case of 60-year old woman with right upper quadrant pain in whom the surgical pathologic diagnosis was ectopic pancreas of the stomach complicated by pancreatitis and pseudocyst formation.
		                        		
		                        		
		                        		
		                        			Abdominal Pain
		                        			;
		                        		
		                        			Diagnosis
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Hemorrhage
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Jaundice, Obstructive
		                        			;
		                        		
		                        			Middle Aged
		                        			;
		                        		
		                        			Nausea
		                        			;
		                        		
		                        			Necrosis
		                        			;
		                        		
		                        			Pancreas*
		                        			;
		                        		
		                        			Pancreatitis*
		                        			;
		                        		
		                        			Stomach
		                        			;
		                        		
		                        			Vomiting
		                        			
		                        		
		                        	
7.Relationship Between Age and Pleural Fluid Adenosine Deaminase Activity in Patients with Tuberculous Pleural Effusion.
Chong Ju KIM ; Kyu Min YEON ; Shin Tae KIM ; Joon Ho WANG ; Kwang Ha YOO
Tuberculosis and Respiratory Diseases 2002;52(6):608-615
		                        		
		                        			
		                        			BACKGROUND: ADA is an enzyme found in most cells, and is involved in purine metabolism, but its chief role concerns the proliferation and differentiation of lymphocytes, especially T-lymphocytes. For that reason ADA has been looked on as a marker of cell-mediate immunity, which is th key mechanism of the tuberculous pleural effusion. Thus, the pleural fluid ADA activity is increased in the tuberculous pleural effusion.Age associated immune deline is characterized by decreases in both B and T-lymphocyte function and the former may be largely a result of the latter. Therefore, the epleural fluid ADA activity would be lower in old rather than in young, patients with tuberculous pleural effusion. We studied the relationship between age, and pleural fluid ADA activity, in patients with tuberculous pleural effusion. METHODS: In the 46 patients with tuberculous pleural effusion enroll in this study, the pleural fluid ADA activities were measured by means of an automated kinetic method. RESULTS: The mean age of the patients was 53.0+/-22.0 years, with a male to female ratio of 30 : 16. The patients were divided into two groups, young patients, regarded as <65 and old regarded as >or=65 years with 28 and 18 patients, respectively. The pleural fluid ADA activity in both groups show significant differences : 99.4+/- 22.6 IU/L(young patients) Vs. 75.8+/-30.9 IU/L(old patients)(p<0.05), but a negative correlation with age (r=-0.311, p<0.05). CONCLUSION: Although pleural fluid ADA activity was not adequately increase, tuberculous pleural effusion, in older patients, would have to be considered clinically suspicious tuberculous pleural effusion.
		                        		
		                        		
		                        		
		                        			Adenosine Deaminase*
		                        			;
		                        		
		                        			Adenosine*
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Lymphocytes
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Metabolism
		                        			;
		                        		
		                        			Pleural Effusion*
		                        			;
		                        		
		                        			T-Lymphocytes
		                        			
		                        		
		                        	
8.Relationship Between Age and Pleural Fluid Adenosine Deaminase Activity in Patients with Tuberculous Pleural Effusion.
Chong Ju KIM ; Kyu Min YEON ; Shin Tae KIM ; Joon Ho WANG ; Kwang Ha YOO
Tuberculosis and Respiratory Diseases 2002;52(6):608-615
		                        		
		                        			
		                        			BACKGROUND: ADA is an enzyme found in most cells, and is involved in purine metabolism, but its chief role concerns the proliferation and differentiation of lymphocytes, especially T-lymphocytes. For that reason ADA has been looked on as a marker of cell-mediate immunity, which is th key mechanism of the tuberculous pleural effusion. Thus, the pleural fluid ADA activity is increased in the tuberculous pleural effusion.Age associated immune deline is characterized by decreases in both B and T-lymphocyte function and the former may be largely a result of the latter. Therefore, the epleural fluid ADA activity would be lower in old rather than in young, patients with tuberculous pleural effusion. We studied the relationship between age, and pleural fluid ADA activity, in patients with tuberculous pleural effusion. METHODS: In the 46 patients with tuberculous pleural effusion enroll in this study, the pleural fluid ADA activities were measured by means of an automated kinetic method. RESULTS: The mean age of the patients was 53.0+/-22.0 years, with a male to female ratio of 30 : 16. The patients were divided into two groups, young patients, regarded as <65 and old regarded as >or=65 years with 28 and 18 patients, respectively. The pleural fluid ADA activity in both groups show significant differences : 99.4+/- 22.6 IU/L(young patients) Vs. 75.8+/-30.9 IU/L(old patients)(p<0.05), but a negative correlation with age (r=-0.311, p<0.05). CONCLUSION: Although pleural fluid ADA activity was not adequately increase, tuberculous pleural effusion, in older patients, would have to be considered clinically suspicious tuberculous pleural effusion.
		                        		
		                        		
		                        		
		                        			Adenosine Deaminase*
		                        			;
		                        		
		                        			Adenosine*
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Lymphocytes
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Metabolism
		                        			;
		                        		
		                        			Pleural Effusion*
		                        			;
		                        		
		                        			T-Lymphocytes
		                        			
		                        		
		                        	
9.Epidemiologic and Clinical Survey of Behcet's Disease in Korea: the First Multicenter Study.
Dongsik BANG ; Ju Hee LEE ; Eun So LEE ; Sungnack LEE ; Jong Soo CHOI ; Young Keun KIM ; Baik Kee CHO ; Jai Kyoung KOH ; Young Ho WON ; Nack In KIM ; Seok Don PARK ; Hong Jun AHN ; Yoon Woo LEE ; Han Young WANG ; Won Woo LEE ; Hee Chul EUN ; Eun Sup SONG ; Sung Won LEE ; Chang Woo LEE ; Chong Ju LEE ; Jae Ho PARK ; Yeong Wook SONG ; Sang Tae KIM ; Chong Yeol KIM ; Jang Kyu PARK ; Kyung Sool KWON
Journal of Korean Medical Science 2001;16(5):615-618
		                        		
		                        			
		                        			The prevalence of Behcet's disease is the highest in the East Asian and the Medi-terranean countries. Behcet's disease is also distributed in the Asian countries, but the nationwide survey has not been performed in Korea yet. The Korean Study Group for Behcet's Disease, founded in 1999, conducted a multicenter, retrospective survey on epidemiologic and clinical features of the patients with Behcet's disease from 20 hospitals around the nation from 1997 to 1999. Of 3,497 patients, 1,527 were classified into complete or incomplete type of Behcet's disease according to the revised Shimizu's classification. The sex ratio was 1:1.75 with the female predominance. Geographical distribution showed the highest frequency in Seoul (38.5%). Clinically, 98.8% had oral ulcers, 83.2% had genital ulcers, 84.3% had skin lesions and 50.9% had ocular lesions. As for the minor clinical manifestations, articular symptoms were the most frequent. The pathergy test showed positive in 15.4% of patients and revealed a higher positive rate in males (20.2%) than in females (12.7%). In conclusion, we performed the first multicenter study on Behcet's disease in Korea and revealed the female predominance, higher frequency of ocular lesions, and lower positivity of pathergy test in the patients.
		                        		
		                        		
		                        		
		                        			Adolescence
		                        			;
		                        		
		                        			Adult
		                        			;
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Behcet's Syndrome/complications/*epidemiology
		                        			;
		                        		
		                        			Child
		                        			;
		                        		
		                        			Child, Preschool
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Human
		                        			;
		                        		
		                        			Infant
		                        			;
		                        		
		                        			Korea/epidemiology
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Middle Age
		                        			;
		                        		
		                        			Prevalence
		                        			;
		                        		
		                        			Retrospective Studies
		                        			;
		                        		
		                        			Sex Distribution
		                        			
		                        		
		                        	
10.A Case of Primary Cutaneous Marginal Zone B-cell Lymphoma.
Jae Wang KIM ; Ho Gyun LEE ; Kwang Joong KIM ; Jong Min KIM ; Chong Ju LEE
Annals of Dermatology 1999;11(2):124-128
		                        		
		                        			
		                        			We herein present a rare case of a 42-year-old man with primary cutaneous marginal zone lymphoma(MZL) of the B-cell type on his shin. MZL is known to be the cutaneous counterpart of MALT(mucosa-associated lymphatic tissue) lymphoma. Histopathologically, MZL is characterized by multi-nodular infiltrates of centrocyte-like and centroblast-like marginal cells with bottom-heavy patterns, lymphoplasmacytoid differentiation, typical distribution of tumor cells in the marginal zone and follicular colonization by tumor cells. This B-cell lymphoma of a benign grade should be differentiated from mantle cell lymphoma and follicular center cell lymphoma.
		                        		
		                        		
		                        		
		                        			Adult
		                        			;
		                        		
		                        			B-Lymphocytes
		                        			;
		                        		
		                        			Colon
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Lymphoma
		                        			;
		                        		
		                        			Lymphoma, B-Cell
		                        			;
		                        		
		                        			Lymphoma, B-Cell, Marginal Zone*
		                        			;
		                        		
		                        			Lymphoma, Mantle-Cell
		                        			
		                        		
		                        	
            
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