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Tsai MH, Chen CL, Chang HJ, Chuang TC, Chiu CH. Antimicrobial activity of eravacycline and other comparative agents on aerobic and anaerobic bacterial pathogens in Taiwan: A clinical microbiological study. J Glob Antimicrob Resist 2024; 37:93-99. [PMID: 38552878 DOI: 10.1016/j.jgar.2024.03.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 03/08/2024] [Accepted: 03/24/2024] [Indexed: 04/20/2024] Open
Abstract
OBJECTIVES Eravacycline, a new tetracycline derivative, exhibits broad-spectrum antimicrobial susceptibility. This study aimed to comprehensively investigate in vitro activities of eravacycline, tigecycline, and ertapenem against various Gram-positive, Gram-negative, and anaerobic bacteria. METHODS Minimum inhibitory concentrations (MICs) were determined using the broth microdilution method. The following bacterial species were collected: vancomycin-sensitive (VS) Enterococci species, vancomycin-resistant Enterococci species (VRE), Staphylococcus aureus, Streptococcus anginosus, Bacteroides species, Clostridioides difficile, Clostridium innocuum, Clostridium perfringens, Parabacteroides distasonis, and Stenotrophomonas maltophilia. RESULTS We found that eravacycline exhibited superior in vitro activity compared to tigecycline and ertapenem. Notably, it exhibited the lowest MIC90 for several bacterial species, including VS E. faecalis (0.12 µg/mL), VS E. faecium (0.12 µg/mL), and others. Besides, VRE was susceptible to eravacycline (MIC90:0.12 µg/mL) and tigecycline (MIC90:0.12 µg/mL), but was all resistant to ertapenem (MIC90 > 64 µg/mL). S. aureus was also susceptible to eravacycline (MIC90:0.5 µg/mL) as well as tigecycline (MIC90:1.0 µg/mL). Furthermore, S. anginosus showed higher susceptibility to eravacycline (MIC90:2.0 µg/mL) and tigecycline (MIC90:4.0 µg/mL), but lower to ertapenem (MIC90:32.0 µg/mL). Eravacycline and tigecycline also demonstrated good susceptibility to anaerobes, including Bacteroides species (susceptibility rate: 100%), P. distasonis (100%), C. difficile (94.1‒100%), C. innocuum (94.1‒96.1%), and C. perfringens (88.9‒96.3%). For S. maltophilia, both tigecycline and eravacycline showed an MIC90 of 2 µg/mL. A moderate-to-strong correlation (rho = 0.608-0.804, P < 0.001) was noted between the MIC values of eravacycline and tigecycline against various bacterial species. CONCLUSIONS Our study highlights the potential of eravacycline as an effective treatment option for multidrug-resistant bacterial infections.
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Affiliation(s)
- Ming-Han Tsai
- Department of Pediatrics, Chang Gung Memorial Hospital, Keelung, Taiwan; Department of Microbiology and Immunology, Chang Gung University College of Medicine, Taoyuan, Taiwan; Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Chyi-Liang Chen
- Department of Microbiology and Immunology, Chang Gung University College of Medicine, Taoyuan, Taiwan; Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Hsin-Ju Chang
- Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Tzu-Chun Chuang
- Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Cheng-Hsun Chiu
- Department of Microbiology and Immunology, Chang Gung University College of Medicine, Taoyuan, Taiwan; Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan; Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Children's Hospital, Taoyuan, Taiwan.
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Wang LM, Ma HY, Sun P, Luo S, Luan YS, Ren PD, Cai XH, Chang HJ, Peng PX, Yu YG, Wang YY, Song BL, Xu WG, Chen YG. [Preliminary report on the use of total lumpectomyconical remnant gastric - esophagus side overlap anastomosis in radical resection of Siewert type II proximal gastric cancer]. Zhonghua Wei Chang Wai Ke Za Zhi 2023; 26:885-888. [PMID: 37709700 DOI: 10.3760/cma.j.cn441530-20220930-00397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 09/16/2023]
Abstract
Objective: There is no standard method for esophageal remnant gastric reconstruction for proximal gastrectomy. Reflux esophagitis caused by esophagogastrostomy remains a difficult surgical problem. To report the preliminary surgical results of novel esophagus-conical remnant gastric side overlap anastomosis (CGEO) , with particular emphasis on postoperative esophageal reflux. Methods: In June 2022, we developed a novel CGEO for laparoscopic proximal gastrectomy on two patients with Siewert type II esophagogastric junction adenocarcinoma. Surgical procedures for CGEO: (1) Laparoscopic proximal gastrectomy and preparation of conically shaped gastric remnant; (2) Determining anastomotic site of residual stomach and esophagus; (3) Side-to-side anastomosis of right esophageal wall to anterior of conical gastric remnant; (4) Valvuloplasty of esophageal stump. Results: Case 1 was a 71-year-old man with an operation time of 305 minutes and was successfully discharged from the hospital on the 9th day after surgery, and the postoperative pathology was T3N0M0. Case 2 was an 82-year-old man with an operation time of 325 minutes. He was discharged on the 10th day after surgery. In both cases, only mild esophageal mucosal changes were seen in gastroscopy, there were no obvious symptoms of esophageal reflux. There was also no significant weight change at half a year after operation. Conclusion: CGEO is moderately safe in radical surgery for proximal gastric cancer, and may have a preventive effect on the occurrence of postoperative esophageal reflux, but long-term results need to be confirmed by further studies with follow-up.
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Affiliation(s)
- L M Wang
- Department of Gastrointestinal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Shenzhen 518116, China
| | - H Y Ma
- Department of Gastrointestinal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Shenzhen 518116, China
| | - P Sun
- Department of Gastrointestinal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Shenzhen 518116, China
| | - S Luo
- Department of Gastrointestinal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Shenzhen 518116, China
| | - Y S Luan
- Department of Gastrointestinal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Shenzhen 518116, China
| | - P D Ren
- Department of Gastrointestinal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Shenzhen 518116, China
| | - X H Cai
- Department of Gastrointestinal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Shenzhen 518116, China
| | - H J Chang
- Department of Gastrointestinal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Shenzhen 518116, China
| | - P X Peng
- Department of Gastrointestinal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Shenzhen 518116, China
| | - Y G Yu
- Department of Gastrointestinal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Shenzhen 518116, China
| | - Y Y Wang
- Department of Gastrointestinal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Shenzhen 518116, China
| | - B L Song
- Department of Gastrointestinal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Shenzhen 518116, China
| | - W G Xu
- Department of Gastrointestinal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Shenzhen 518116, China
| | - Y G Chen
- Department of Gastrointestinal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Shenzhen 518116, China
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Chuang CH, Janapatla RP, Wang YH, Chang HJ, Chen CL, Chiu CH. Association between histo-blood group antigens and Pseudomonas aeruginosa-associated diarrheal diseases. J Microbiol Immunol Infect 2023; 56:367-372. [PMID: 36585291 DOI: 10.1016/j.jmii.2022.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 11/14/2022] [Accepted: 12/10/2022] [Indexed: 12/23/2022]
Abstract
BACKGROUND Pseudomonas aeruginosa is not a common enteric pathogen. The association between human histo-blood group antigens (HBGAs) and P. aeruginosa enteric infection has not yet been studied. METHODS We collected stool samples from healthy children under 2 years of age for P. aeruginosa gut colonization rate. Saliva samples were collected from patients with P. aeruginosa-associated diarrheal diseases and normal healthy children. Genomic DNA was extracted from saliva samples for ABO blood group typing and FUT2 genotyping. Lewis phenotype was detected using ELISA assay. RESULTS A total of 85 patients with P. aeruginosa-associated diarrheal diseases and 105 healthy children were enrolled for collecting saliva specimens. The stool colonization rate was 5/101 (5%) in healthy children, 4/58 (6.9%) in infants, and 1/43 (2.3%) in children 1-2 years old, respectively. Blood group A was more frequent in patients with P. aeruginosa-associated diarrheal diseases 24/77 (31.2%) than in healthy children 18/102 (17.6%) (P = 0.035). All patients and healthy children were secretor positive. The distribution of weak-secretor genotype Se385/Se385 was 23/84 (27.4%) in patients with P. aeruginosa-associated diarrheal diseases and 17/104 (16.3%) in healthy children, respectively (P = 0.06). Patients with P. aeruginosa-associated diarrheal diseases had a higher percentage of Lea+b+ phenotype 25/81 (30.9%) than healthy children 17/105 (16.2%) (P = 0.018). There was no association between ABO or secretor or Lewis status with the clinical severity of P. aeruginosa-associated diarrheal diseases. CONCLUSION Infants had a higher gut P. aeruginosa colonization rate than children. Children with blood group A and Lea+b+ phenotype are prone to P. aeruginosa-associated diarrheal diseases.
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Affiliation(s)
- Chih-Hsien Chuang
- Department of Pediatrics, St. Paul's Hospital, Taoyuan, Taiwan; Molecular Infectious Diseases Research Center, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan; School of Medicine, College of Medicine, Fu-Jen Catholic University, New Taipei, Taiwan.
| | - Rajendra Prasad Janapatla
- Molecular Infectious Diseases Research Center, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan.
| | - Yi-Hsin Wang
- Molecular Infectious Diseases Research Center, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan.
| | - Hsin-Ju Chang
- Molecular Infectious Diseases Research Center, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan.
| | - Chyi-Liang Chen
- Molecular Infectious Diseases Research Center, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan.
| | - Cheng-Hsun Chiu
- Molecular Infectious Diseases Research Center, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan; Division of Pediatric Infectious Diseases, Chang Gung Children's Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan.
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Janapatla RP, Dudek A, Chen CL, Chuang CH, Chien KY, Feng Y, Yeh YM, Wang YH, Chang HJ, Lee YC, Chiu CH. Marine prebiotics mediate decolonization of Pseudomonas aeruginosa from gut by inhibiting secreted virulence factor interactions with mucins and enriching Bacteroides population. J Biomed Sci 2023; 30:9. [PMID: 36732731 PMCID: PMC9896862 DOI: 10.1186/s12929-023-00902-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 01/12/2023] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Pseudomonas aeruginosa intestinal carriage rates are significantly higher in immunosuppressed individuals and hospitalized patients who therefore have increased risk of infections and antibiotic-associated diarrhea. To combat intestinal dysbiosis and decolonize P. aeruginosa from gastrointestinal tract, we investigated the anti-adherence and gut microbiota modulation properties of marine prebiotic fucoidans. METHODS Proteomic analysis of culture supernatant was performed by LC-MS/MS. Using lectin-based enzyme-linked immunosorbent assay, hemagglutinin domain interaction and inhibition with biomolecules were studied. We investigated the role of nutritional grade fucoidans in a mouse model and used 16S ribosomal RNA sequencing to examine fecal microbiota composition. RESULTS Analysis of culture supernatant proteins indicated the secretion of two-partner secretion (TPS) family proteins, including TpsA1/CdiA2 and TpsA2/CdiA1. Lectin like activity at the N-terminal of TpsA due to a conserved hemagglutinin domain (Pfam identifier [ID] PF05860) mediates binding to mucins that carry multiple fucosylated glycans. Fucose-rich sulfated polysaccharides (fucoidans) and sulfated dextrans were found to be potent inhibitors of the recombinant N-terminal hemagglutinin domain of TpsA (TpsA-NT-HAD) binding to mucins. In a mouse model, antibiotic-induced dysbiosis was essential for P. aeruginosa gastrointestinal colonization. After prophylactic oral fucoidans supplementation, a higher proportion (60%) of the mice were decolonized over time and resisted re-colonization, this was associated with remarkable expansion of Bacteroides (post-infection day-3 abundance, 29-50%) and consequential reductions in bloom of Enterobacteriaceae and Enterococcaceae populations. In the non-supplemented group, Parabacteroides mediated recovery from dysbiosis but failed to decolonize P. aeruginosa. CONCLUSIONS Supplementing diet with marine prebiotic fucoidans can mediate earlier recovery from dysbiosis and decolonization of P. aeruginosa from gut by inhibiting secreted virulence factor (TpsA/CdiA) interaction with mucins and promoting the growth of beneficial Bacteroides population. We suggest the prophylactic use of nutritional grade fucoidans to decolonize P. aeruginosa from gastrointestinal tract of at-risk individuals to prevent infection and transmission of colonizing P. aeruginosa.
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Affiliation(s)
- Rajendra Prasad Janapatla
- grid.413801.f0000 0001 0711 0593Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Anna Dudek
- grid.413801.f0000 0001 0711 0593Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Chyi-Liang Chen
- grid.413801.f0000 0001 0711 0593Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | | | - Kun-Yi Chien
- grid.145695.a0000 0004 1798 0922Graduate Institute of Biomedical Sciences, Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Ye Feng
- grid.13402.340000 0004 1759 700XInstitute for Translational Medicine, Zhejiang University School of Medicine, Hangzhou, China
| | - Yuan-Ming Yeh
- grid.413801.f0000 0001 0711 0593Chang Gung Microbiota Therapy Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Yi-Hsin Wang
- grid.413801.f0000 0001 0711 0593Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Hsin-Ju Chang
- grid.413801.f0000 0001 0711 0593Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Yuan-Chuan Lee
- grid.21107.350000 0001 2171 9311Department of Biology, Johns Hopkins University, Baltimore, MD USA
| | - Cheng-Hsun Chiu
- grid.413801.f0000 0001 0711 0593Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan ,grid.413801.f0000 0001 0711 0593Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan
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Deb B, Rogers AJ, Bhatia NK, Baykaner T, Turakhia M, Clopton PL, Chang HJ, Brodt C, Narayan SM, Wang PJ, Viswanathan MN. Machine learned clusters explain heterogeneity in outcomes from map-guided ablation of Atrial Fibrillation results from the large PROspective STanford AF Registry (ProSTAR). Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Several mapping systems are being introduced to guide atrial fibrillation (AF) ablation to patient-specific regions of interest. However, results have been extremely heterogeneous between studies, ranging from very poor to very promising. It is unknown if this reflects specific patient characteristics or procedural factors because most prior series were middle sized (N∼30–100 patients).
Purpose
To study 1 year and 3 year very long-term outcomes from map guided AF-driver ablation in a large patient registry with multiple operators, to identify clinical and procedural features influencing outcomes. In real-world AF patients with diverse comorbidities, we applied a consistent patient-tailored AF mapping and ablation strategy, monitored outcomes carefully and applied statistical and unsupervised machine learning approaches to identify features of success and failure.
Method
We studied 632 consecutive patients (65±10 y, 178 F) undergoing ablation for drug-refractory AF. 59.7% had persistent AF, and 29.9% had prior unsuccessful ablation (median 1 procedure). All patients underwent pulmonary vein isolation (PVI), followed by ablation of AF regions of interest mapped from 64 pole baskets (RhythmView, Abbott, IL), by 11 operators. Patients were followed using ambulatory ECG monitors quarterly for one year, and at the time of symptoms for 3 years.
Results
Fig. 1A shows overall freedom from AF at 1-year of 77.5% (95% CI: 74.2%, 80.9%) and at 3 years of 55.5% (95% CI: 51.2%, 60.1%). Freedom from AF/AT at 1-year was 70.1% (95% CI: 66.5%, 73.8%), and at 3 years was 48.6% (95% CI: 44.3%, 53.3%). Success was higher in patients with procedural termination, first ablation versus prior unsuccessful procedures, for paroxysmal AF than non-paroxysmal AF (1 year: AT/AF freedom 74.9% versus 66.7%, p=0.006), and smaller left atrium. Three clusters (Fig 1B) were identified comprising CHA2DS2VASc score, enlarged LA, prior failed case, presenting rhythm and termination during the procedure (Table 2). At 1 year, freedom from AT/AF was 77.8% (95% CI: 72.2%, 82.1%) for cluster 3 and 56.2% (95% CI: 48.3%, 65.4%) for cluster 1 (Fig. 1B).
Conclusion
In our large registry of N=632 patients undergoing AF-map guided ablations, machine learned clusters identified cohorts with success of 56.2 to 77.8% at 1 year. Future studies should identify if lower success represents technical challenges, such as difficulties in mapping very large atria, or more difficult to treat mechanisms. These results may inform patient inclusion and ablation strategy in upcoming AF treatment trials.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): National budget only - NIH, R01 HL149134, R01HL83359
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Affiliation(s)
- B Deb
- Stanford University School of Medicine, Cardiology , Palo Alto , United States of America
| | - A J Rogers
- Stanford University School of Medicine, Cardiology , Palo Alto , United States of America
| | - N K Bhatia
- Stanford University School of Medicine, Cardiology , Palo Alto , United States of America
| | - T Baykaner
- Stanford University School of Medicine, Cardiology , Palo Alto , United States of America
| | - M Turakhia
- Stanford University School of Medicine, Cardiology , Palo Alto , United States of America
| | - P L Clopton
- Stanford University School of Medicine, Cardiology , Palo Alto , United States of America
| | - H J Chang
- Stanford University School of Medicine, Cardiology , Palo Alto , United States of America
| | - C Brodt
- Stanford University School of Medicine, Cardiology , Palo Alto , United States of America
| | - S M Narayan
- Stanford University School of Medicine, Cardiology , Palo Alto , United States of America
| | - P J Wang
- Stanford University School of Medicine, Cardiology , Palo Alto , United States of America
| | - M N Viswanathan
- Stanford University School of Medicine, Cardiology , Palo Alto , United States of America
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Feng R, Deb B, Ganesan P, Rogers AJ, Ruiperez-Campillo S, Clopton P, Tjong FV, Chang HJ, Rodrigo M, Zaharia M, Narayan SM. Automatic left atrial segmentation from cardiac CT using computer graphics imaging and deep learning. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Segmenting left atrial (LA) substructures, including the LA body, appendage (LAA), and pulmonary veins (PVs), from computed tomography (CT) is central to electroanatomic mapping for ablation and functional studies in patients with atrial fibrillation (AF). However, this process requires manual outlining which needs special training, is subjective, and is difficult to scale. Computer graphics imaging (CGI) has been applied in media, film, and computer-aided design to reliably segment complex structures using their basic geometric representations.
Purpose
We hypothesized that LA substructures can be “virtually” dissected using CGI to separate geometric contours of the “convex ellipsoid” LA, “tubular” PVs, and “conical” LAA. We further hypothesized that the results of virtual dissection can be used to train a deep learning (DL) model to segment raw CT scans.
Methods
First, a mathematical method based on CGI techniques – erosion and dilation – was developed to “virtually dissect” the convex LA body from the original concave shell in publicly available digital atria with diverse simulated morphologies (Fig. 1A). The PVs and LAA were then automatically revealed and labeled by a 3D subtraction approach. Second, we refined precise LA/PV/LAA boundaries by tuning hyper-parameters from N=5 patient shells (Fig. 1B). Third, we used virtual dissection to train a DL model to segment CTs in N=20 patient atria (Fig. 1C). Finally, we applied this pipeline to segment raw CTs in a validation cohort of N=105 patients (23.8% women, 63.8±10.3Y; Fig. 1D).
Results
Virtual dissection accurately identified LA/PV/LAA boundaries in the training set (Dice coefficients 89–98%). In the independent test cohort (N=105), this automated pipeline accurately segmented raw CTs with Dice 81–95% (Fig. 1D) compared to a panel of experts (p<0.001).
Conclusion
CGI of basic cardiac geometry combined with deep learning in small datasets can accurately segment raw CT scans in large populations. This computational pipeline may automate and simplify cardiac image processing and ablation procedures, and could be applied to the ventricle or other organ systems for diverse therapeutic strategies or to train machine learning.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): National Institutes of Health
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Affiliation(s)
- R Feng
- Stanford University, School of Medicine , Palo Alto , United States of America
| | - B Deb
- Stanford University, School of Medicine , Palo Alto , United States of America
| | - P Ganesan
- Stanford University, School of Medicine , Palo Alto , United States of America
| | - A J Rogers
- Stanford University, School of Medicine , Palo Alto , United States of America
| | | | - P Clopton
- Stanford University, School of Medicine , Palo Alto , United States of America
| | - F V Tjong
- Amsterdam UMC , Amsterdam , The Netherlands
| | - H J Chang
- Stanford University, School of Medicine , Palo Alto , United States of America
| | - M Rodrigo
- University of Valencia , Valencia , Spain
| | - M Zaharia
- Stanford University, Computer Science , Palo Alto , United States of America
| | - S M Narayan
- Stanford University, School of Medicine , Palo Alto , United States of America
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Lee H, Park HE, Chun EJ, Chang HJ, Sung J, Jung HO, Choi SY. The impact of nonoptimal lipids on the progression of coronary artery calcification in asymptomatic young adults: results from the KOICA registry. Eur J Prev Cardiol 2022. [DOI: 10.1093/eurjpc/zwac056.180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Recently, as cumulative exposure of lipids for a lifetime has become important to prevent and predict atherosclerotic cardiovascular disease (ASCVD), it is recommended to obtain the optimal lipid levels from a young age. However, questions remain regarding the vascular changes in young adulthood by nonoptimal lipid levels.
Purpose
We aimed to investigate the progression of coronary artery calcification (CAC) according to lipid profiles in Korean young adults.
Methods
From the KOrea Initiative on Coronary Artery calcification registry, we collected 2,940 statin-naïve adults under 45-year-old, undergoing serial coronary artery calcium scans for the purpose of routine health check-ups between 2002 and 2017. CAC progression was assessed according to the optimality of lipid levels and each lipid variable.
Results
In this cohort (mean age, 41.3 years; man 82.4%), only 477 subjects (16.2%) had the optimal lipid profile, defined as triglycerides <150 mg/dl, LDL cholesterol <100 mg/dl, and HDL cholesterol ≥45 mg/dl. During follow-up (median 39.7 months), CAC progression was observed in 438 participants (14.8%) and more frequent in nonoptimal lipid group (16.5% vs 5.9%; p<0.001). Nonoptimal lipid levels during young adulthood increased the risk of CAC progression after adjusting for other cardiovascular risk factors (adjusted HR, 2.36; p=0.001), with a stepwise risk increase according to lipid levels. In particular, in the subjects with an initial calcium score of zero (adjusted HR, 2.13; p=0.014), those in their 20s or 30s (adjusted HR 2.70; p=0.029), and those without any other risk factors (adjusted HR 2.51; p=0.025), deemed as very low-risk groups, nonoptimal lipid levels more than doubled the risk of CAC progression, respectively. Among lipid variables, high triglycerides appeared to provide the greatest impact on CAC progression of young adults.
Conclusions
The proportion of young adults with optimal lipid levels was lower than expected. Nonoptimal lipid level was significantly associated with the risk of CAC progression in young adults, even with low-risk. Triglycerides had the strongest association with the risk of CAC progression. Screening and intervention for nonoptimal lipid levels, particularly triglycerides, from an early age might be of clinical value.
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Affiliation(s)
- H Lee
- Seoul National University Hospital, Department of Internal Medicine, Division of Cardiology, Seoul, Korea (Republic of)
| | - HE Park
- Seoul National University Hospital, Department of Internal Medicine, Division of Cardiology, Seoul, Korea (Republic of)
| | - EJ Chun
- Seoul National University Bundang Hospital, Division of Radiology, Seongnam, Korea (Republic of)
| | - HJ Chang
- Severance Cardiovascular Hospital, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - J Sung
- Samsung Medical Center, Division of Cardiology, Seoul, Korea (Republic of)
| | - HO Jung
- The Catholic University of Korea Seoul St. Mary's Hospital, Division of Cardiology, Seoul, Korea (Republic of)
| | - SY Choi
- Seoul National University Hospital, Department of Internal Medicine, Division of Cardiology, Seoul, Korea (Republic of)
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Won KB, Park EJ, Chun EJ, Sung J, Jung HO, Chang HJ. Association of blood pressure classification using the 2017 ACC/AHA guidelines with the progression of coronary artery calcification. Eur J Prev Cardiol 2021. [DOI: 10.1093/eurjpc/zwab061.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Aims
The recent American College of Cardiology/American Heart Association guidelines reinforced the criteria for diagnosis of hypertension. We assessed the association of this reinforced criteria with coronary artery calcification (CAC) progression in asymptomatic adults according to different age groups.
Methods and results
We included 10,839 asymptomatic Korean adults (23.4% aged ≤45 years) who underwent at least two coronary artery calcium score (CACS) evaluations between 2012 and 2016. All participants were categorised into normal blood pressure (BP) (untreated systolic/diastolic <120/<80 mmHg), elevated BP (untreated systolic/diastolic 120–129/<80 mmHg), stage 1 hypertension (untreated systolic/diastolic BP 130–139/80–89 mmHg), or stage 2 hypertension (systolic/diastolic BP ≥140/≥90 mmHg or taking anti-hypertensive medication) groups. CAC progression was defined as a difference ≥2.5 between the square roots (√) of the baseline and follow-up CACSs (Δ√transformed CACS). During a mean 3.3-year follow-up, the incidence of CAC progression was 13.5% and 36.3% in groups with ≤45 and >45 years, respectively. After multivariable adjustment for sex, diabetes, dyslipidaemia, obesity, current smoking, and baseline CACS, hazard ratios (95% confidence interval) for CAC progression versus normal BP in elevated BP, stage 1 hypertension, and stage 2 hypertension were 1.39 (0.93–2.07)(P = 0.107), 1.59 (1.17–2.17)(P = 0.003), and 2.38 (1.82–3.12)(P <0.001) in the ≤45 years group and 1.13 (0.97–1.32)(P = 0.111), 1.20 (1.06–1.34)(P = 0.003), and 1.72 (1.57–1.87)(P <0.001) in the >45 years group.
Conclusion
Newly defined stage 1 hypertension is independently associated with CAC progression in asymptomatic Korean adults irrespective of different age groups.
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Affiliation(s)
- KB Won
- Ulsan University Hospital, Cardiology, Ulsan, Korea (Republic of)
| | - EJ Park
- Ulsan University Hospital, Medical information Center, Ulsan, Korea (Republic of)
| | - EJ Chun
- Seoul National University Bundang Hospital, Seongnam, Korea (Republic of)
| | - J Sung
- Samsung Medical Center, Seoul, Korea (Republic of)
| | - HO Jung
- The Catholic University of Korea, Cardiology, Seoul, Korea (Republic of)
| | - HJ Chang
- Severance Cardiovascular Hospital, Yonsei University College of Medicine, Seoul, Korea (Republic of)
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9
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Chang HJ, Pan J, Xu ZJ, Wang DJ. [The incidence and related factors of coronary events among 40-49 years old patients undergoing cardiac thoracotomy without preoperative CAG]. Zhonghua Xin Xue Guan Bing Za Zhi 2020; 48:948-953. [PMID: 33210867 DOI: 10.3760/cma.j.cn112148-20200901-00693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the long-term incidence of coronary events and related factors in patients undergoing cardiac thoracotomy without preoperative coronary angiography (CAG). Methods: This was a retrospective study. The clinical data of patients, aged between 40 and 49 years old, who underwent cardiothoracic surgery, including heart valve surgery, congenital heart disease surgery, cardio great vessels surgery and other non-coronary artery disease (CAD) surgery, in Nanjing Drum Tower Hospital from December 2009 to May 2017, were enrolled. Patients with suspected CAD, or patients with coronary CTA defined calcified coronary arteries received CAG examination prior operation, and the rest patients did not receive routine CAG examinations. The patients who did not receive routine CAG examinations were followed up by telephone. The primary endpoints include death related to coronary arteries, coronary artery bypass graft (CABG) or percutaneous coronary intervention (PCI). The secondary endpoints include the new onset angina, clinically diagnosed CAD or receiving the first and second prevention for CAD. The other outcome events included cardiac death and all-cause mortality. The primary and secondary endpoints were all regarded as coronary events. The patients without preoperative CAG were divided into two groups: the positive group and the negative group, according to the incidence of coronary events during follow-up. Clinical data were compared between the two groups. Results: A total of 952 patients were included. The age was (45.2±2.7) years old, 406(42.65%) patients were male. Preoperative CAG was performed in 73 patients, among whom 9 (12.32%) patients underwent simultaneous CABG. Among the 879 cases who did not undergo coronary angiography before the operation, 18(2.05%) died during perioperative period (hospitalization and within 30 days after discharge). The patients were followed up for (61.6±25.8) months, and 28(3.25%) patients were lost to follow up. During long-term follow up, there were no fatal cases due to severe coronary events and no cases of CABG or PCI. Only 4.41% (38/861) patients had the secondary endpoints, namely the occasional onset of atypical angina. The incidence rate of the long-term coronary events, all-cause mortality and cardiac death were 4.41% (38/861), 1.16% (10/861), 0.46% (4/861) during long-term follow-up. The prevalence of hypertension was significantly higher in positive group than negative group (34.21% (13/38) vs. 20.89% (164/785), P=0.045). Conclusions: It is feasible not to perform preoperative CAG examination for non-CAD patients aged 40-49 years who will undergo cardiac thoracotomy. However, we need to be aware the risk of coronary events in the patients complicating with risk factors of CAD, such as hypertension.
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Affiliation(s)
- H J Chang
- Department of Cardio-Thoracic Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China; Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - J Pan
- Department of Cardio-Thoracic Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Z J Xu
- Department of Cardio-Thoracic Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - D J Wang
- Department of Cardio-Thoracic Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
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10
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Ahn D, Song JD, Kang SS, Lim JY, Yang SH, Ko S, Park SH, Park SJ, Kim DS, Chang HJ, Chang J. Intrinsically p-type cuprous iodide semiconductor for hybrid light-emitting diodes. Sci Rep 2020; 10:3995. [PMID: 32132624 PMCID: PMC7055318 DOI: 10.1038/s41598-020-61021-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 01/17/2020] [Indexed: 11/25/2022] Open
Abstract
Cuprous halides, characterized by a direct wide band-gap and a good lattice matching with Si, is an intrinsic p-type I-VII compound semiconductor. It shows remarkable optoelectronic properties, including a large exciton binding energy at room temperature and a very small piezoelectric coefficient. The major obstacle to its application is the difficulty in growing a single-crystal epitaxial film of cuprous halides. We first demonstrate the single crystal epitaxy of high quality cuprous iodide (CuI) film grown on Si and sapphire substrates by molecular beam epitaxy. Enhanced photoluminescence on the order of magnitude larger than that of GaN and continuous-wave optically pumped lasing were found in MBE grown CuI film. The intrinsic p-type characteristics of CuI were confirmed using an n-AlGaN/p-CuI junction that emits blue light. The discovery will provide an alternative way towards highly efficient optoelectronic devices compatible with both Si and III-nitride technologies.
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Affiliation(s)
- D Ahn
- Peta Lux Inc., 3F TLi Building, 12 Yanghyeon-ro, 405 beon-gil, Jungwon-gu, Seongnam-si, Gyeonggi-do, 13438, Republic of Korea. .,Department of Electrical and Computer Engineering and Center for Quantum Information Processing, University of Seoul, 163 Seoulsiripdae-ro, Dongdaemun-gu, Seoul, 02504, Republic of Korea. .,Physics Department, Charles E. Schmidt College of Science, Florida Atlantic University, 777 Glades Road, Boca Raton, FL, 33431-0991, USA.
| | - J D Song
- Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology Hwarang-ro 14 gil, Seoungbuk-ku, Seoul, 02792, Republic of Korea.
| | - S S Kang
- Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology Hwarang-ro 14 gil, Seoungbuk-ku, Seoul, 02792, Republic of Korea.,Department of Physics, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - J Y Lim
- Peta Lux Inc., 3F TLi Building, 12 Yanghyeon-ro, 405 beon-gil, Jungwon-gu, Seongnam-si, Gyeonggi-do, 13438, Republic of Korea
| | - S H Yang
- Peta Lux Inc., 3F TLi Building, 12 Yanghyeon-ro, 405 beon-gil, Jungwon-gu, Seongnam-si, Gyeonggi-do, 13438, Republic of Korea
| | - S Ko
- Peta Lux Inc., 3F TLi Building, 12 Yanghyeon-ro, 405 beon-gil, Jungwon-gu, Seongnam-si, Gyeonggi-do, 13438, Republic of Korea
| | - S H Park
- Electronics Department, Catholic University of Daegu, 13 Hayang-Ro, Hayang-Eup, Gyeongsan-si, Gyeongbuk, 38430, Republic of Korea
| | - S J Park
- WONIK IPS, 75 Jinwisandan-ro, Jinwi-myeon, Pyeingtaek-si, Gyeonggi-do, 17709, Republic of Korea
| | - D S Kim
- TLi Inc., 10 F TLi Building, 12 Yanghyeon-ro, 405 beon-gil, Jungwon-gu, Seongnam-si, Gyeonggi-do, 13438, Republic of Korea
| | - H J Chang
- Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology Hwarang-ro 14 gil, Seoungbuk-ku, Seoul, 02792, Republic of Korea
| | - Joonyeon Chang
- Post-Silicon Semiconductor Institute, Korea Institute of Science and Technology Hwarang-ro 14 gil, Seoungbuk-ku, Seoul, 02792, Republic of Korea. .,Department of Materials Science & Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea. .,Yonsei-KIST Convergence Research Institute, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
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11
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Cho IJ, Lee JH, Choi SY, Chun EJ, Park SH, Han HW, Sung JD, Jung HO, Chang HJ. 430 Relation of blood pressure to coronary artery calcium and mortality. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Diastolic blood pressure has a J-curve relation with coronary heart disease and death, but it is debating whether a J-curve association exists in general population. We aimed to assess the relation of blood pressure to mortality, and whether their association is interacted with presence of high coronary artery calcium (CAC).
Methods
The KOICA registry is a retrospective, multicenter observational study designed to investigate the effectiveness and prognostic value of CAC score for primary prevention of cardiovascular disease in asymptomatic Korean adults. The association between CAC score and blood pressure was assessed. Patients were divided into 2 groups according to the baseline CACS (> 300 and ≤ 300), and all-cause mortality was assessed.
Results
The study population composed 48903 subjects with a mean age of 54 ± 9. There were 425 (0.9%) deaths during follow-up. At baseline, SBP (systolic blood pressure) more than 110 mmHg and DBP (diastolic blood pressure) more than 80 mmHg was associated with increased risk for CACS > 300. In patients with baseline CACS ≤ 300, all-cause mortality was increased in patients with SBP of 110-119 mmHg (HR 1.47, p = 0.023), 130-139 mmHg (HR 1.72, p = 0.002) and ≥ 140 mmHg (HR 1.47, p = 0.042) compared to SBP of 120-129 mmHg, whereas DBP did not predict all-cause mortality. In contrast, SBP was not associated to all-cause mortality in patients with CACS > 300, whereas DBP < 60 mmHg (HR 3.53, p =0.018) and 70-79 mmHg (HR 2.21, p = 0.042) was associated with increased risk for all-cause mortality compared to DBP of 80-89 mmHg.
Conclusion
Low DBP was associated with increased risk for all-cause mortality in subjects with high CAC score, suggesting high-risk for coronary artery disease. However, this J-curve relation was not shown in the population with low CAC score.
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Affiliation(s)
- I J Cho
- Ewha Womans University Seoul Hospital, Seoul, Korea (Republic of)
| | - J H Lee
- Hospital Myongji, Goyang, Korea (Republic of)
| | - S Y Choi
- Seoul National University, Seoul, Korea (Republic of)
| | - E J Chun
- Seoul National University, Seoul, Korea (Republic of)
| | - S H Park
- Gangnam Heartscan Clinic, Seoul, Korea (Republic of)
| | - H W Han
- Gangnam Heartscan Clinic, Seoul, Korea (Republic of)
| | - J D Sung
- Samsung Medical Center, Seoul, Korea (Republic of)
| | - H O Jung
- The Catholic University of Korea, Seoul, Korea (Republic of)
| | - H J Chang
- Yonsei University College of Medicine, Cardiology Division, Seoul, Korea (Republic of)
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12
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Commandeur F, Goeller M, Razipour A, Cadet S, Hell MM, Kwiecinski J, Chen X, Chang HJ, Marwan M, Achenbach S, Berman DS, Slomka PJ, Tamarappoo BK, Dey D. 5963Automated quantification of epicardial adipose tissue from non-contrast CT on multi-center and multi-vendor data using deep learning. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Epicardial adipose tissue (EAT), a metabolically active visceral fat depot surrounding the coronary arteries, has been shown to promote the development of atherosclerosis in underlying coronary vasculature.
Purpose
We evaluate the performance of deep learning (DL), a sub-group of machine learning algorithms, for robust and fully automated quantification of EAT on multi-center cardiac CT data.
Methods
In this study, 850 non-contrast calcium scoring CT scans, from multiple cohorts, scanners and protocols, with manual measurements of EAT from 3 different readers were considered. The DL method was based on a convolutional neural network trained to reproduce the expert measurement. DL global performance was first assessed using all the scans, and then compared to inter-observer variability on a subset of 141 scans. Finally, automated EAT progression was compared to manual measurement using baseline and follow-up serial scans available for 70 subjects. The proposed model was validated using 10-fold cross validation.
Results
Automated quantification was performed in 1.57±0.49 seconds compared to 15 minutes for manual measurement. DL provided high agreement with expert manual quantification for all scans (R=0.974, p<0.001) with no significant bias (0.53 cm3, p=0.13). EAT volume was higher in patients with hypertension (+18.02 cm3, p<0.001, N=442), with diabetes (+18.33 cm3, p<0.001, N=75) and with hypercholesterolemia (+7.33 cm3, p=0.039, N=508). Manual EAT volumes measured by two experienced readers on 141 scans were highly correlated (R=0.984, p<0.001) but presented a significant difference of 4.35 cm3 (p<0.001). On these 141 scans, DL quantifications were highly correlated to both experts' measurements (R=0.973, p<0.001; R=0.979, p<0.001) with significant and non-significant bias for readers 1 and 2 (5.19 cm3, p<0.001; 0.84 cm3, p=0.26), respectively. In 70 subjects, EAT progression quantified by DL correlated strongly with EAT progression measured by the expert reader (R=0.905, p<0.001) with no significant bias (0.64 cm3, p=0.43), and was related to increased non-calcified plaque burden quantified from coronary CT angiography (5.7% vs 1.8%, p=0.026).
Automated vs. manual EAT volume
Conclusion
Deep learning allows rapid, robust and fully automated quantification of EAT from calcium scoring CT. It performs as an expert reader and can be implemented for routine cardiovascular risk assessment.
Acknowledgement/Funding
1R01HL133616/01EX1012B/Adelson Medical Research Foundation
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Affiliation(s)
- F Commandeur
- Cedars-Sinai Medical Center, Biomedical Imaging Research Institute, Los Angeles, United States of America
| | - M Goeller
- Friedrich Alexander University, Department of Cardiology, Erlangen, Germany
| | - A Razipour
- Cedars-Sinai Medical Center, Biomedical Imaging Research Institute, Los Angeles, United States of America
| | - S Cadet
- Cedars-Sinai Medical Center, Department of Imaging and Medicine, Los Angeles, United States of America
| | - M M Hell
- Friedrich Alexander University, Department of Cardiology, Erlangen, Germany
| | - J Kwiecinski
- Cedars-Sinai Medical Center, Department of Imaging and Medicine, Los Angeles, United States of America
| | - X Chen
- Cedars-Sinai Medical Center, Department of Imaging and Medicine, Los Angeles, United States of America
| | - H J Chang
- Severance Hospital, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - M Marwan
- Friedrich Alexander University, Department of Cardiology, Erlangen, Germany
| | - S Achenbach
- Friedrich Alexander University, Department of Cardiology, Erlangen, Germany
| | - D S Berman
- Cedars-Sinai Medical Center, Department of Imaging and Medicine, Los Angeles, United States of America
| | - P J Slomka
- Cedars-Sinai Medical Center, Department of Imaging and Medicine, Los Angeles, United States of America
| | - B K Tamarappoo
- Cedars-Sinai Medical Center, Department of Imaging and Medicine, Los Angeles, United States of America
| | - D Dey
- Cedars-Sinai Medical Center, Biomedical Imaging Research Institute, Los Angeles, United States of America
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13
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Gianni U, Van Rosendael AR, Van Den Hoogen IJ, Al Hussein Alawamlh O, Stuijfzand W, Al'aref SJ, Pena JM, Lu Y, Chang HJ, Berman DS, Shaw LJ, Min JK, Lin FY. P861A quantitative CCTA evaluation in non-obstructive coronary artery disease for the diagnosis of vessel-specific ischemia: results from the prospective, multicenter, international CREDENCE trial. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Aim
To improve the diagnosis of coronary vessel-specific ischemia in non-obstructive coronary artery disease (CAD) using a quantitative whole-heart coronary computed tomography angiography (CCTA) evaluation. To date, predictors of ischemia in non-obstructive CAD remain underexplored.
Methods
Within the CREDENCE trial, 612 patients with suspected CAD at 13 sites (64±10 years, 70% men) underwent coronary computed tomography angiography (CCTA) and invasive coronary angiography with 3-vessel fractional flow reserve (FFR) measurements. For this specific analysis, only vessels with non-obstructive plaque (1–49% maximal diameter stenosis) by CCTA were included. The primary endpoint was coronary vessel-specific ischemia which was defined as FFR ≤0.80 (or ≥90% stenosis). Multivariable logistic regression modeling was performed to evaluate the effect of quantitative CCTA features beyond coronary stenosis on the prevalence of vessel-specific ischemia.
Results
FFR ≤0.80 (or ≥90% stenosis) was prevalent in 22.8% of 1,102 vessels with non-obstructive plaque. Using a step-wise approach, in addition to diameter stenosis (χ2=72), non-calcified PAV (χ2=126, P<0.001), lumen volume (χ2=175, P<0.001) and number of lesions with >30% stenosis (χ2=187, P=0.001) were independent CCTA-predictors of coronary vessel-specific ischemia (Figure 1). In the final model, diameter stenosis was no longer significantly associated with ischemia (P=0.236).
Figure 1
Conclusion
In vessels with non-obstructive plaque on CCTA, ischemia was present in approximately 20%. Measures of overall non-calcified plaque burden and smaller lumen volume were more important determinants of vessel-specific ischemia than maximal diameter stenosis.
Acknowledgement/Funding
NIH R01-HLL118019; Dalio Foundation and Michael J. Wolk Foundation
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Affiliation(s)
- U Gianni
- Weill Cornell Medical College, New York, United States of America
| | | | | | | | - W Stuijfzand
- Weill Cornell Medical College, New York, United States of America
| | - S J Al'aref
- Weill Cornell Medical College, New York, United States of America
| | - J M Pena
- Weill Cornell Medical College, New York, United States of America
| | - Y Lu
- Weill Cornell Medical College, New York, United States of America
| | - H J Chang
- Severance Hospital, Cardiology, Seoul, Korea (Republic of)
| | - D S Berman
- Cedars-Sinai Medical Center, Imaging and Medicine, Los Angeles, United States of America
| | - L J Shaw
- Weill Cornell Medical College, New York, United States of America
| | - J K Min
- Weill Cornell Medical College, New York, United States of America
| | - F Y Lin
- Weill Cornell Medical College, New York, United States of America
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14
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Cho I, Jung MS, Jung HG, Xie Y, Wang N, Kim WD, Li D, Chang HJ. P604Clinical feasibility assessment of a novel Quantitative Multi-contrast Atherosclerosis Characterization (qMATCH) sequence for carotid plaque quantification. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Conventional protocol contrast MRI (cMRI) for evaluating carotid artery atherosclerosis is clinically under-utilized due to complex scanning procedures and long scan time. Recently, the Quantitative Multi-contrast Atherosclerosis Characterization (qMATCH) has been proposed, which allows comprehensive and quantitative assessment of atherosclerosis including MRA, dark-blood vessel wall morphology, and T1/T2 mapping with an 8-minute single scan (Figure1). However, the diagnostic accuracy and feasibility of qMATCH has not been validated in clinical circumstances.
Purpose
To evaluate the diagnostic accuracy of quantitative plaque analysis of qMATCH compared with cMRI
Method
We prospectively enrolled 43 patients who have carotid plaques diagnosed by carotid ultrasound. cMRI was performed along with qMATCH scan. All imaging data were acquired with a clinical 3T scanner using a 64-channel head & neck coil. In the current analysis, we evaluated the diagnostic accuracy of qMATCH in the quantitative assessment of carotid plaque. Plaque area measurements using dark-blood wall images with qMATCH were compared with corresponding cross-sectional T1/T2-weighted images with cMRI as references values (Figure 2). These inter-technique comparisons included linear regression with Pearson correlation and Bland-Altman analyses to assess the mean inter-technique differences (biases) and limits of agreements.
Result
Among 90 segments, mean plaque areas measured by cMRI and qMATCH were 43.83±21.21 mm2 and 42.47±19.23mm2, respectively (mean differences, −1.36±8.12mm2; p for a paired t-test, 0.073). Correlation coefficient showed excellent correlation between plaque areas measured by cMRI and qMATCH (r=0.943, p<0.001) (Figure 3). Bland-Altman plot showed excellent agreement in plaque areas between the two methods (Figure 4).
Conclusion
Quantitative carotid plaque burden analysis by a novel sequence with qMATCH is feasible and accurate compared with conventional MRI. Given that qMATCH can reduce scan time and allow quantitative relaxometry mapping, fast and accurate carotid plaque analysis would be feasible. Further studies to evaluate the accuracy of qualitative plaque analysis should be performed to confirm the “all-in-one” assessment of carotid atherosclerosis using qMATCH.
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Affiliation(s)
- I Cho
- Chung-Ang University Hospital, Department of Cardiology, Seoul, Korea (Republic of)
| | - M S Jung
- Chung-Ang University Hospital, Department of Radiology, Seoul, Korea (Republic of)
| | - H G Jung
- Chung-Ang University Hospital, Department of Cardiology, Seoul, Korea (Republic of)
| | - Y Xie
- Cedars-Sinai Medical Center, Biomedical Imaging Research Institute, Los Angeles, United States of America
| | - N Wang
- Cedars-Sinai Medical Center, Biomedical Imaging Research Institute, Los Angeles, United States of America
| | - W D Kim
- Chung-Ang University Hospital, Department of Cardiology, Seoul, Korea (Republic of)
| | - D Li
- Cedars-Sinai Medical Center, Biomedical Imaging Research Institute, Los Angeles, United States of America
| | - H J Chang
- Severance Hospital, Department of Cardiology, Seoul, Korea (Republic of)
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15
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Lee SE, Andreini D, Budoff MJ, Cademartiri F, Hadamitzky M, Marques H, Leipsic JA, Stone PH, Samady H, Narula J, Berman DS, Shaw LJ, Bax JJ, Min JK, Chang HJ. P6165Sex differences in compositional plaque volume progression in patients with stable coronary artery disease: observations from a serial CCTA registry. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
It is unclear whether sex impacts the plaque volume (PV) progression in patients with stable coronary artery disease (CAD).
Purpose
To explore whether the total and compositional PV progression rate differ according to sex.
Methods
We performed a prospective multinational registry of consecutive patients who underwent serial CCTA at ≥2-year interval. Total and compositional PV at baseline and follow-up were quantitatively analysed and normalized using the analysed total vessel length. Multivariate linear regression models were constructed for each women and men.
Results
Of the 1,255 patients included (median CT interval 3.8 years), 543 were women and 712 were men. Women were older (62±9 years vs. 59±9 years, p<0.001) and had higher total cholesterol level (195±41mg/dL vs. 187±39mg/dL, p=0.002). Prevalence of hypertension, diabetes, and family history of CAD were not different (all p>0.05).
At baseline, men possessed greater total PV (131.5±230.5mm3 vs. 97.7±193.6mm3, p=0.005) and a higher prevalence of high-risk plaques (HRP) than women (31% vs. 20%, p<0.001). Annual total PV progression rate was greater in men, driven by the greater non-calcified PV progression (TABLE).
In multivariate analysis (TABLE), although total PV progression rate was not different, women were associated with greater calcified PV progression (β=2.83, p=0.004) but slower non-calcified PV progression (β=-3.39, p=0.008) and less development of HRP (β=-0.18, p=0.049) than men.
CCTA findings according to sex Univariate analysis Female Sex in Multivariable Analysis Women (n=543) Men (n=712) P β SE P Agatston CACS, /year 0.44±0.7 0.4±0.7 0.332 0.106 0.04 0.006 Total PVnormalized, mm3/year 14.7±23.4 17.8±26.2 0.026 -0.56 1.33 0.677 Calcified PVnormalized, mm3/year 10.5±21.5 10.0±19.1 0.670 2.83 0.98 0.004 Non-calcified PVnormalized, mm3/year 4.2±17.3 7.8±21.2 0.001 -3.39 1.28 0.008 Development of high-risk plaque*, n (%) 86 (15.8) 139 (19.5) 0.092 -0.18 0.09 0.049 In linear multivariate regression analysis adjusted with age, race, HTN, DM, family history, smoking, LDL, statin, anti-platelets, beta-blockers, and PV at baseline, women were associated with greater calcified PV progression and slower non-calcified PV progression. (High-risk plaque was defined as ≥2 of low-attenuation plaque, spotty calcification, and positive remodelling.)
Conclusion
In this large CCTA cohort, we found that the compositional PV progression differs according to sex. These findings, which are hypothesis generating, suggest that comprehensive plaque evaluation may contribute to further refine risk stratification according to sex.
Acknowledgement/Funding
This work was supported by the National Research Foundation of Korea funded by the Ministry of Science and ICT (Grant No. 2012027176).
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Affiliation(s)
- S E Lee
- Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - D Andreini
- Cardiology Center Monzino IRCCS, Milan, Italy
| | - M J Budoff
- University of California Los Angeles, Los Angeles, United States of America
| | | | | | | | | | - P H Stone
- Brigham and Womens Hospital, Boston, United States of America
| | - H Samady
- Emory University School of Medicine, Atlanta, United States of America
| | - J Narula
- Mount Sinai School of Medicine, New York, United States of America
| | - D S Berman
- Cedars-Sinai Medical Center, Los Angeles, United States of America
| | - L J Shaw
- Weill Cornell Medical College, New York, United States of America
| | - J J Bax
- Leiden University Medical Center, Leiden, Netherlands (The)
| | - J K Min
- Weill Cornell Medical College, New York, United States of America
| | - H J Chang
- Yonsei University College of Medicine, Seoul, Korea (Republic of)
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16
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Lee SE, Pontone G, Gottlieb I, Hadamitzky M, Leipsic JA, Raff G, Stone PH, Samady H, Virmani R, Berman DS, Shaw LJ, Narula J, Bax JJ, Min JK, Chang HJ. P6162Difference in progression to obstructive lesions according to the presence of high-risk plaque features. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
It is still debatable whether the so-called high-risk plaque (HRP) simply represents a certain phase during the natural history of coronary atherosclerotic plaques or the disease progression would differ according to the presence of HRP.
Purpose
We determined whether the pattern of non-obstructive lesion progression into obstructive lesions would differ according to the presence of HRP.
Methods
Patients with non-obstructive coronary artery disease, defined as % diameter stenosis (%DS) ≥50%, were enrolled from a prospective, multinational registry of consecutive patients who underwent serial coronary computed tomography angiography at an inter-scan interval of ≥2 years. HRP was defined as lesions with ≥2 of positive remodelling, spotty calcification, and low-attenuation plaque. The total and compositional percent atheroma volume (PAV) at baseline and annualized PAV change were compared between non-HRP and HRP lesions.
Results
A total of 1,115 non-obstructive lesions were identified from 327 patients (61.1±8.9 years old, 66.0% male). There were 690 non-HRP and 425 HRP lesions. HRP lesions possessed greater PAV and %DS at baseline compared to non-HRP lesions. However, the annualized total and non-calcified PAV change were greater in non-HRP lesions than in HRP lesions. On multivariate analysis, addition of baseline PAV and %DS to clinical risk factors improved the predictive power of the model (Table). When clinical risk factors, PAV, %DS, and HRP were all adjusted on Model 3, only baseline PAV and %DS independently predicted the development of obstructive lesions (hazard ratio (HR) 1.046 [95% confidence interval (CI): 1.026–1.066] and HR 1.087 [95% CI: 1.055–1.119], respectively, all p<0.001), while HRP did not (p>0.05).
Comparison of C-statistics of per-lesion analysis to predict progression to obstructive lesion C-statistics (95% CI) P Model 1: Baseline PAV 0.880 (0.879–0.884) – Model 2: Model 1 + baseline %DS 0.938 (0.937–0.939) vs. Model 1: <0.001 Model 3: Model 2 + HRP 0.935 (0.934–0.937) vs. Model 2: 0.004 Adjusted for age, male sex, hypertension, diabetes mellitus, hyperlipidemia, family history of coronary artery disease, smoking, body mass index, and statin use.
Conclusion
The pattern of individual coronary atherosclerotic plaque progression differed according to the presence of HRP. Baseline PAV was the most important predictor for lesions developing into obstructive lesions rather than the presence of HRP features at baseline.
Acknowledgement/Funding
This work was supported by the National Research Foundation of Korea funded by the Ministry of Science and ICT (Grant No. 2012027176).
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Affiliation(s)
- S E Lee
- Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - G Pontone
- Cardiology Center Monzino IRCCS, Milan, Italy
| | - I Gottlieb
- National Institute of Cardiology, Rio de Janeiro, Brazil
| | | | | | - G Raff
- William Beaumont Hospital, Royal Oak, United States of America
| | - P H Stone
- Brigham and Womens Hospital, Boston, United States of America
| | - H Samady
- Emory University School of Medicine, Atlanta, United States of America
| | - R Virmani
- CVPath Institute, Gaithersburg, United States of America
| | - D S Berman
- Cedars-Sinai Medical Center, Los Angeles, United States of America
| | - L J Shaw
- Weill Cornell Medical College, New York, United States of America
| | - J Narula
- Mount Sinai School of Medicine, New York, United States of America
| | - J J Bax
- Leiden University Medical Center, Leiden, Netherlands (The)
| | - J K Min
- Weill Cornell Medical College, New York, United States of America
| | - H J Chang
- Yonsei University College of Medicine, Seoul, Korea (Republic of)
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17
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Van Den Hoogen IJ, Lin FY, Van Rosendael AR, Gianni U, Al Hussein Alawamlh O, Lee SE, Berman DS, Shaw LJ, Bax JJ, Min JK, Chang HJ. P868Temporal remodeling of coronary arteries during progression of atherosclerosis with serial coronary CT angiography using 3D metrics: results from the PARADIGM study. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Aim
To determine compensatory enlargement and luminal reduction of coronary arteries during the progression of atherosclerosis with serial coronary computed tomography angiography (CCTA) by using volumetric measurements. To date, the impact of coronary plaque progression on temporal remodeling, as opposed to the static remodeling, has only been studied with invasive imaging modalities and primarily two-dimensional areas rather than three-dimensional volumes.
Methods
In total, 1,245 patients with suspected coronary artery disease (CAD) at 13 sites (61±9 years, 39% women) underwent serial CCTA with interscan interval of ≥2 years. The primary objective was to assess volumetric temporal remodeling, defined as the linear association between the change in coronary plaque, lumen and vessel volume at follow-up CCTA on a per-segment level. Temporal remodeling was determined in strata of low and high baseline plaque burden as well as different coronary segments at baseline. Linear regression analysis and Pearson's correlation coefficients were calculated to assess associations.
Results
Amongst 1,245 patients with 19,920 segments, the median interscan interval was 3.3 (IQR 2.6–4.8) years. For each 1 mm3 increase in plaque volume, the increase in vessel volume was 0.72 mm3 and the decrease in lumen volume was 0.28 mm3 (Figure 1, both p<0.001). Volumetric temporal remodeling was similar in low versus high PAV [0.70 mm3 vs 0.73 mm3 (p for interaction=0.491)] and left-main arteries versus all other segments [0.78 mm3 vs. 0.72 mm3 (p for interaction=0.336)], but not in proximal versus distal segments at baseline [0.75 mm3 vs. 0.61 mm3 (p for interaction=0.020)].
Figure 1. Volumetric temporal remodeling
Conclusion
In general, coronary plaque grows approximately 70% outward and 30% into the coronary lumen during the progression of atherosclerosis. Volumetric temporal remodeling is not limited by baseline plaque burden, but is potentially dependent on its location within the coronary artery tree.
Acknowledgement/Funding
NRF of Korea (Grant No. 2012027176); Dalio Institute of Cardiovascular Imaging and Michael J. Wolk Foundation
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Affiliation(s)
| | - F Y Lin
- Weill Cornell Medical College, New York, United States of America
| | | | - U Gianni
- Weill Cornell Medical College, New York, United States of America
| | | | - S E Lee
- Severance Hospital, Cardiology, Seoul, Korea (Republic of)
| | - D S Berman
- Cedars-Sinai Medical Center, Imaging and Medicine, Los Angeles, United States of America
| | - L J Shaw
- Weill Cornell Medical College, New York, United States of America
| | - J J Bax
- Leiden University Medical Center, Cardiology, Leiden, Netherlands (The)
| | - J K Min
- Weill Cornell Medical College, New York, United States of America
| | - H J Chang
- Severance Hospital, Cardiology, Seoul, Korea (Republic of)
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18
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Nguyen TMT, Wang PW, Hsu HM, Cheng FY, Shieh DB, Wong TY, Chang HJ. Dental cement's biological and mechanical properties improved by ZnO nanospheres. Materials Science and Engineering: C 2019; 97:116-123. [DOI: 10.1016/j.msec.2018.12.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 11/15/2018] [Accepted: 12/04/2018] [Indexed: 12/13/2022]
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19
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Kwiecinski J, Dey D, Lee SE, Otaki Y, Doris MK, Eisenberg E, Yun M, Cho A, Jansen MA, Dweck MR, Slomka PJ, Newby DE, Chang HJ, Berman DS. P6207Pericoronary adipose tissue density and low attenuation plaque are associated with 18F-sodium fluoride coronary uptake in vulnerable plaque patients. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- J Kwiecinski
- Cedars-Sinai Medical Center, Los Angeles, United States of America
| | - D Dey
- Cedars-Sinai Medical Center, Los Angeles, United States of America
| | - S E Lee
- Yonsei University College of Medicine, Severance Cardiovascular Hospital, Seoul, Korea Republic of
| | - Y Otaki
- Cedars-Sinai Medical Center, Los Angeles, United States of America
| | - M K Doris
- University of Edinburgh, Centre for Cardiovascular Sciences, Edinburgh, United Kingdom
| | - E Eisenberg
- Cedars-Sinai Medical Center, Los Angeles, United States of America
| | - M Yun
- Yonsei University College of Medicine, Severance Cardiovascular Hospital, Seoul, Korea Republic of
| | - A Cho
- Yonsei University College of Medicine, Severance Cardiovascular Hospital, Seoul, Korea Republic of
| | - M A Jansen
- University of Edinburgh, Centre for Cardiovascular Sciences, Edinburgh, United Kingdom
| | - M R Dweck
- University of Edinburgh, Centre for Cardiovascular Sciences, Edinburgh, United Kingdom
| | - P J Slomka
- Cedars-Sinai Medical Center, Los Angeles, United States of America
| | - D E Newby
- University of Edinburgh, Centre for Cardiovascular Sciences, Edinburgh, United Kingdom
| | - H J Chang
- Yonsei University College of Medicine, Severance Cardiovascular Hospital, Seoul, Korea Republic of
| | - D S Berman
- Cedars-Sinai Medical Center, Los Angeles, United States of America
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20
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Won KB, Kim HC, Lee BK, Chang HJ. P738Association between insulin resistance estimated by triglyceride glucose index and arterial stiffness. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- K B Won
- Ulsan University Hospital, Cardiology, Ulsan, Korea Republic of
| | - H C Kim
- Yonsei University College of Medicine, Preventive Medicine, Seoul, Korea Republic of
| | - B K Lee
- Gangnam Severance Hospital, Cardiology, Seoul, Korea Republic of
| | - H J Chang
- Yonsei Cardiovascular Center, Cardiology, Seoul, Korea Republic of
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21
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Cho IJ, Lee SE, Lee SH, Lee S, Youn YN, Shim CY, Hong GR, Ha JW, Chang HJ. P4513Is long-term oral anticoagulation plus an antiplatelet drug better than anticoagulants alone after concomitant heart valve replacement and coronary artery bypass surgery? Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- I J Cho
- Yonsei University College of Medicine, Cardiology Division, Seoul, Korea Republic of
| | - S E Lee
- Yonsei University College of Medicine, Cardiology Division, Seoul, Korea Republic of
| | - S H Lee
- Yonsei University College of Medicine, Cardiovascular surgery, Seoul, Korea Republic of
| | - S Lee
- Yonsei University College of Medicine, Cardiovascular surgery, Seoul, Korea Republic of
| | - Y N Youn
- Yonsei University College of Medicine, Cardiovascular surgery, Seoul, Korea Republic of
| | - C Y Shim
- Yonsei University College of Medicine, Cardiology Division, Seoul, Korea Republic of
| | - G R Hong
- Yonsei University College of Medicine, Cardiology Division, Seoul, Korea Republic of
| | - J W Ha
- Yonsei University College of Medicine, Cardiology Division, Seoul, Korea Republic of
| | - H J Chang
- Yonsei University College of Medicine, Cardiology Division, Seoul, Korea Republic of
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22
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Kim MJ, Jung HO, Jeon DS, Han DH, Park HE, Choi SY, Sung JD, Chang HJ. P4455Differential impact of cardiovascular risk factors on aorta and coronary artery aging. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M.-J Kim
- Incheon St.Mary's hospital, Incheon, Korea Republic of
| | - H O Jung
- Seoul St. Mary's Hospital, Seoul, Korea Republic of
| | - D S Jeon
- Incheon St.Mary's hospital, Incheon, Korea Republic of
| | - D H Han
- Yonsei Cardiovascular Center, Seoul, Korea Republic of
| | - H E Park
- Seoul National University Hospital, Seoul, Korea Republic of
| | - S Y Choi
- Seoul National University Hospital, Seoul, Korea Republic of
| | - J D Sung
- Samsung Medical Center, Seoul, Korea Republic of
| | - H J Chang
- Yonsei Cardiovascular Center, Seoul, Korea Republic of
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23
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Lee SE, Hadamitzky M, Kim YJ, Pontone G, Budoff MJ, Gottlieb I, Cademartiri F, Marques H, Leipsic JA, Berman DS, Shaw LS, Narula J, Bax JJ, Min JK, Chang HJ. P2486Differential association between the progression of coronary artery calcium and coronary plaque volume progression according to statins. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- S E Lee
- Yonsei University College of Medicine, Seoul, Korea Republic of
| | | | - Y J Kim
- Seoul National University Hospital, Seoul, Korea Republic of
| | - G Pontone
- Cardiology Center Monzino IRCCS, Milan, Italy
| | - M J Budoff
- University of California Los Angeles, Los Angeles, United States of America
| | - I Gottlieb
- Casa de Saude São Jose, Rio de Janeiro, Brazil
| | | | | | - J A Leipsic
- University of British Columbia, Vancouver, Canada
| | - D S Berman
- Cedars-Sinai Medical Center, Los Angeles, United States of America
| | - L S Shaw
- Emory University School of Medicine, Atlanta, United States of America
| | - J Narula
- Mount Sinai School of Medicine, New York, United States of America
| | - J J Bax
- Leiden University Medical Center, Leiden, Netherlands
| | - J K Min
- Weill Cornell Medical College, New York, United States of America
| | - H J Chang
- Yonsei University College of Medicine, Seoul, Korea Republic of
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24
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Won KB, Lee SE, Lee BK, Sung JM, Park HB, Heo R, Hadamitzky M, Rizvi A, Kim YJ, Conte E, Andreini D, Budoff MJ, Leipsic JA, Min JK, Chang HJ. P2485Longitudinal quantitative assessment of coronary plaque progression related to glycemic status using serial coronary computed tomography angiography. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- K B Won
- Ulsan University Hospital, Cardiology, Ulsan, Korea Republic of
| | - S E Lee
- Yonsei Cardiovascular Center, Cardiology, Seoul, Korea Republic of
| | - B K Lee
- Gangnam Severance Hospital, Cardiology, Seoul, Korea Republic of
| | - J M Sung
- Yonsei Cardiovascular Center, Cardiology, Seoul, Korea Republic of
| | - H B Park
- International St. Mary's Hospital, Cardiology, Incheon, Korea Republic of
| | - R Heo
- Weill Cornell Medical College, Cardiovascular Imaging, New York, United States of America
| | - M Hadamitzky
- German Heart Center of Munich, Radiology, Munich, Germany
| | - A Rizvi
- Weill Cornell Medical College, Cardiovascular Imaging, New York, United States of America
| | - Y J Kim
- Seoul National University Hospital, Cardiology, Seoul, Korea Republic of
| | - E Conte
- Cardiology Center Monzino IRCCS, Medicine, Milan, Italy
| | - D Andreini
- Cardiology Center Monzino IRCCS, Medicine, Milan, Italy
| | - M J Budoff
- Harbor UCLA Medical Center, Medicine, Los Angeles, United States of America
| | - J A Leipsic
- St Paul's Hospital, Radiology, Vancouver, Canada
| | - J K Min
- Weill Cornell Medical College, Cardiovascular Imaging, New York, United States of America
| | - H J Chang
- Yonsei Cardiovascular Center, Cardiology, Seoul, Korea Republic of
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25
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Janapatla RP, Su LH, Chen HH, Chang HJ, Tsai TC, Chen PY, Chen CL, Chiu CH. Epidemiology of culture-confirmed infections of Streptococcus pneumoniae (2012-2015) and nasopharyngeal carriage in children and households in Taiwan (2014-2015). J Med Microbiol 2017; 66:729-736. [PMID: 28590240 DOI: 10.1099/jmm.0.000488] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
PURPOSE An observational study was performed to investigate the carriage rate and serotypes of Streptococcus pneumoniae in the 13-valent pneumococcal conjugate vaccine (PCV13) era in Taiwan. METHODOLOGY From March 2014 to March 2015 a total of 500 healthy children and their households (631 adults) were enrolled from two large medical centres for nasopharyngeal carriage survey. Clinical isolates were prospectively collected from June 2012 to May 2015 at Chang Gung Memorial Hospital. We applied a multiplex polymerase chain reaction in addition to culture to detect S. pneumoniae. RESULTS S. pneumoniae was isolated from 12.0 % of the children and 3.6 % of the households. In the children's cohort only 23.3 % of the isolates could be assigned to PCV13 serotypes; non-vaccine serotypes were predominant (76.6 %) and the most frequently detected non-vaccine serotypes were 15A/F and 15B/C (both 13.3 %), followed by 23A (6.7 %). In the household cohort, 21.7 % belonged to PCV13 serotypes, and 78.3 % to non-vaccine serotypes. Clinical analysis of culture-confirmed pneumococcal infection showed that infection caused by PCV13 serotypes decreased by 47 % from 83 % in 2012-2013 to 44 % in 2014-2015, while infection caused by non-PCV13 serotypes increased from 17 to 56 %. Among the carriage isolates a significantly higher percentage belonged to serogroup 15 compared to serogroup 19 (26.6 vs 6.66 %, 2014-2015; P=0.003). Therefore, clinical isolates belonging to serogroup 15 were more prevalent than those belonging to serogroup 19 (44.1 vs 32.3 %, 2014-2015; P=0.318). CONCLUSION The isolation of non-vaccine serotypes and unknown serotypes after the introduction of PCV13 in children highlights the importance of continued surveillance for emerging serotypes.
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Affiliation(s)
- Rajendra Prasad Janapatla
- Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, 333 Taoyuan, Taiwan, ROC
| | - Lin-Hui Su
- Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, 333 Taoyuan, Taiwan, ROC
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, 333 Taoyuan, Taiwan, ROC
| | - Hsin-Hang Chen
- Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, 333 Taoyuan, Taiwan, ROC
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Children's Hospital, Chang Gung University College of Medicine, 333 Taoyuan, Taiwan, ROC
| | - Hsin-Ju Chang
- Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, 333 Taoyuan, Taiwan, ROC
| | - Tian-Chi Tsai
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Children's Hospital, Chang Gung University College of Medicine, 333 Taoyuan, Taiwan, ROC
| | - Po-Yen Chen
- Department of Pediactrics, Taichung Veterans General Hospital, 407 Taichung, Taiwan, ROC
| | - Chyi-Liang Chen
- Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, 333 Taoyuan, Taiwan, ROC
| | - Cheng-Hsun Chiu
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Children's Hospital, Chang Gung University College of Medicine, 333 Taoyuan, Taiwan, ROC
- Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, 333 Taoyuan, Taiwan, ROC
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, 333 Taoyuan, Taiwan, ROC
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26
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Nam MJ, Han KS, Kim BC, Hong CW, Sohn DK, Chang HJ, Kim MJ, Kim SY, Baek JY, Park SC, Oh JH. Long-term outcomes of locally or radically resected T1 colorectal cancer. Colorectal Dis 2016; 18:852-60. [PMID: 26589573 DOI: 10.1111/codi.13221] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Accepted: 10/08/2015] [Indexed: 12/11/2022]
Abstract
AIM Little is known about the long-term outcome of T1 colorectal cancer (CRC) following curative resection. The present study addressed the long-term outcome of locally or radically resected T1 CRCs. METHOD A total of 430 patients with T1 CRC who underwent local or radical resection were considered. Unfavourable histological factors were defined as positive resection margin, deep submucosal invasion, vascular invasion, Grade 3 and budding. The patients were classified as low-risk (unfavourable histological factor negative, n = 65) or high-risk (unfavourable histological factor positive, n = 365). RESULTS Over a median follow-up of 78.4 months, disease recurred in 16 (3.7%) patients in the high-risk group, and no recurrence in the low-risk group. Resection type and vascular invasion were significantly associated with recurrence. In the vascular invasion (+) high-risk group, both 5-year disease-free survival rate and 5-year overall survival rate were significantly associated with resection type (radical 94.6%, local 43.8%, P < 0.001, and radical 99.1%, local 66.7%, P < 0.001). In the vascular invasion (-) high-risk group, 5-year disease-free survival rate was also significantly associated with resection type (radical 98.9%, local 84.7%, P = 0.001). However, 5-year overall survival rate was not associated with resection type (radical 98.9%, local 95.2%, P = 0.816). CONCLUSION Local resection may be effective and oncologically safe in low-risk T1 CRC. Although additional surgery should be recommended for the locally resected high-risk T1 CRC cases, intensive surveillance without additional surgery and timely salvage operation may offer another treatment option, if vascular invasion is negative.
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Affiliation(s)
- M J Nam
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - K S Han
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea.,Center for Cancer Prevention and Early Detection, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - B C Kim
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea.,Center for Cancer Prevention and Early Detection, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - C W Hong
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea.,Center for Cancer Prevention and Early Detection, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - D K Sohn
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea.,Center for Cancer Prevention and Early Detection, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - H J Chang
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - M J Kim
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - S Y Kim
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - J Y Baek
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - S C Park
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea
| | - J H Oh
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea
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27
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Kim BC, Kim YE, Chang HJ, Lee SH, Youk EG, Lee DS, Lee JB, Lee EJ, Kim MJ, Sohn DK, Oh JH. Lymph node size is not a reliable criterion for predicting nodal metastasis in rectal neuroendocrine tumours. Colorectal Dis 2016; 18:O243-51. [PMID: 27166857 DOI: 10.1111/codi.13377] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 04/12/2016] [Indexed: 02/08/2023]
Abstract
AIM The study was designed to assess the correlation between lymph node (LN) size and LN metastasis in patients with rectal neuroendocrine tumours (NETs). METHOD Forty patients who underwent curative resection with lymphadenectomy for a rectal NET between January 2007 and December 2012 were included. The short and long diameters of entire nodes were microscopically measured using a slide gauge. RESULTS In all, 1052 LNs were collected from the 40 patients, with 49 (4.7%) showing evidence of metastasis. Metastasis-positive LNs had significantly greater long and short diameters (P < 0.001) than metastasis-negative LNs. Of the 49 metastatic LNs, 29 (59.2%) were ≤ 5 mm in largest diameter. In five patients, the largest metastatic LN was only 2-3 mm in diameter. In clinically node-negative (cN0) patients, 18 (51.4%) patients had metastatic LNs (pN1). CONCLUSION The size of LNs containing metastasis varied widely, with some being very small. LN size alone is therefore not a sufficient predictor of tumour metastasis in rectal NETs. Radical surgery with lymphadenectomy should be considered for patients with rectal NETs with high risk factors for LN metastasis, even those without LN enlargement.
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Affiliation(s)
- B C Kim
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Gyeonggi, Korea
| | - Y E Kim
- Department of Pathology, Research Institute and Hospital, National Cancer Center, Goyang, Gyeonggi, Korea
| | - H J Chang
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Gyeonggi, Korea.,Department of Pathology, Research Institute and Hospital, National Cancer Center, Goyang, Gyeonggi, Korea
| | - S H Lee
- Department of Pathology, Daehang Hospital, Seoul, Korea
| | - E G Youk
- Department of Surgery, Daehang Hospital, Seoul, Korea
| | - D-S Lee
- Department of Surgery, Daehang Hospital, Seoul, Korea
| | - J B Lee
- Department of Surgery, Daehang Hospital, Seoul, Korea
| | - E-J Lee
- Department of Surgery, Daehang Hospital, Seoul, Korea
| | - M J Kim
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Gyeonggi, Korea
| | - D K Sohn
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Gyeonggi, Korea
| | - J H Oh
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Gyeonggi, Korea
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Martins Fernandes S, Badano L, Garcia Campos A, Erdei T, Mehdipoor G, Hanboly N, Michalski BW, Vriz O, Mo VY, Le TT, Ribeiro JM, Ternacle J, Yurdakul SELEN, Shetye A, Stoebe S, Lisowska A, Chinali M, Orabona M, Contaldi C, De La Chica JA, Codolosa JN, Trzcinski P, Prado Diaz S, Morales Portano JD, Ha SJ, Valente F, Joseph G, Valente F, Scali MC, Cordeiro F, Duchateau N, Fabris E, Costantino MF, Cho IJ, Goublaire C, Lam W, Galli E, Kim KH, Mariani M, Malev E, Zuercher F, Tang Z, Cimino S, Mahia P, De La Chica JA, Petrovic J, Ciobotaru V, Remsey- Semmelweiss E, Kogoj P, Guerreiro S, Saxena A, Mozenska O, Pontone G, Macaya Ten F, Caballero L, Avegliano G, Halmai L, Reis L, Trifunovic D, Gospodinova M, Makavos G, D'ascenzi F, Dantas Tavares De Melo M, Bonapace S, Kulkarni A, Cameli M, Ingvarsson A, Driessen MMP, Tufekcioglu O, Radulescu D, Barac A, Cioffi G, Almeida Morais L, Ledakowicz-Polak A, Portugal G, Naksuk N, Parato VM, Kovalova S, Cherubini A, Corrado G, Malev E, Wierzbowska-Drabik K, Lesevic H, Laredj N, Pieles GE, Generati G, Van Zalen JJ, Aquila I, Cheng HL, Lanzoni L, Asmarats Serra L, Kadrabulatova S, Ranjbar S, Szczesniak-Stanczyk D, Sharka I, Di Salvo G, Ben Kahla S, Li L, Hadeed HA, Habeeb HA, Toscano A, Granata F, Djikic D, Wdowiak-Okrojek K, Girgis HYA, Sharma A, Soro C, Gallego Page JC, Corneli M, Teixeira R, Roussin I, Lynch M, Muraru D, Romeo G, Ermacora D, Marotta C, Aruta P, Cucchini U, Iliceto S, Martin-Fernandez M, De La Hera Galarza JM, Corros-Vicente C, Colunga Blanco S, Velasco-Alonso E, Leon-Aguero V, Rodriguez-Suarez ML, Moris De La Tassa C, Edwards J, Braim D, Price C, Fraser AG, Salmani F, Arjmand Shabestari A, Szymczyk E, Kupczynska K, Peczek L, Nawrot B, Lipiec P, Kasprzak JD, Driussi C, Ferrara F, Brosolo G, Antonini-Canterin F, Magne J, Aboyans V, Bossone E, Bellucci BM, Fisher JM, Balekian AA, Idapalapati S, Huang F, Wong JI, Tan RS, Teixeira R, Madeira M, Almeida I, Reis L, Siserman A, Dinis P, Dias L, Ramos AP, Goncalves L, Wan FW, Sawaki DS, Dubois-Rande JLDR, Adnot SA, Czibik GC, Derumeaux GD, Ercan G, Tekkesin ILKER, Sahin ST, Cengiz B, Celik G, Demircan S, Aytekin SAIDE, Razvi NA, Nazir SA, Price N, Khan JN, Kanagala P, Singh A, Squire I, Mccann GP, Langel M, Pfeiffer D, Hagendorff A, Ptaszynska-Kopczynska K, Marcinkiewicz-Siemion M, Knapp M, Witkowski M, Musial WJ, Kaminski K, Natali B, D' Anna C, Leonardi B, Secinaro A, Pongiglione G, Rinelli G, Renard S, Michel N, Mancini J, Haentjens J, Sitbon O, Habib G, Imbriaco M, Alcidi G, Santoro C, Buonauro A, Lo Iudice F, Lembo M, Cuocolo A, Trimarco B, Galderisi M, Mora Robles J, Roldan Jimenez MA, Mancisidor MA, De Mora MA, Alnabelsi T, Goykhman I, Koshkelashvili N, Romero-Corral A, Pressman GS, Michalski BW, Kupczynska K, Miskowiec D, Lipiec P, Kasprzak JD, Montoro Lopez N, Refoyo Salicio E, Valbuena Lopez SC, Gonzalez O, Alvarez C, Moreno Yanguela M, Bartha Rasero JL, De La Calle M, Guzman Martinez G, Suarez-Cuenca JA, Merino JA, Gomez Alvarez EB, Delgado LG, Woo YM, Bang WD, Sohn GH, Cheong SS, Yoo SY, Rodriguez Palomares JF, Gutierrez L, Maldonado G, Pineda V, Galian L, Teixido G, Gonzalez Allujas MT, Evangelista A, Garcia Dorado D, Zaremba T, Ekeloef S, Heiberg E, Engblom H, Jensen SE, Sogaard P, Rodriguez Palomares JF, Gutierrez L, Garcia G, Pineda V, Galian L, Teixido G, Gonzalez Allujas MT, Evangelista A, Garcia Dorado D, Dini FL, Galli F, Lattanzi F, Picano E, Marzilli M, Leao S, Moz M, Magalhaes P, Trigo J, Mateus PS, Ferreira A, Moreira JI, De Craene M, Legallois D, Labombarda F, Pellissier A, Sermesant M, Saloux E, Merlo M, Moretti M, Barbati G, Stolfo D, Gigli M, Pinamonti B, Sinagra G, Dores E, Matera A, Innelli P, Innelli P, Lopizzo A, Violini R, Fiorilli R, Cappabianca G, Picano E, Tarsia G, Seo J, Chang HJ, Heo R, Kim IC, Shim CY, Hong GR, Chung N, Melissopoulou MM, Nguyen V, Brochet E, Cimadevilla C, Codogno I, Vahanian A, Messika-Zeitoun D, Pontana F, Vassiliou V, Prasad S, Leclercq C, Samset E, Donal E, Lim DS, Bianchi G, Rossi F, Gianetti J, Marchi F, Cerone E, Nardelli A, Terrazzi M, Solinas M, Maffei S, Pshepiy A, Vasina L, Timofeev E, Reeva S, Zemtsovsky E, Brugger N, Jahren S, De Marchi SF, Seiler C, Jin CN, Tang H, Fan K, Kam K, Yan BP, Yu CM, Lee PW, Reali M, Silvetti E, Salatino T, Mancone M, Pennacchi M, Giordano A, Sardella G, Agati L, Tirado G, Nogales-Romo MT, Marcos-Alberca P, De Agustin A, Almeria C, Rodrigo JL, Garcia Fernandez MA, Macaya C, Perez De Isla L, Mancisidor M, Lara Garcia C, Vivancos R, De Mora M, Petrovic M, Vujisic-Tesic B, Trifunovic D, Boricic-Kostic M, Petrovic I, Draganic G, Petrovic O, Tomic-Dragovic M, Furlan T, Ambrozic J, Mohorko Pleskovic PN, Bunc M, Ribeiras R, Abecasis J, Andrade MJ, Mendes M, Ramakrishnan S, Gupta SK, Juneja R, Kothari SS, Zaleska M, Segiet A, Chwesiuk S, Kroc A, Kosior DA, Andreini D, Solbiati A, Guglielmo M, Mushtaq S, Baggiano A, Beltrama V, Rota C, Guaricci AI, Pepi M, Pons Llinares J, Asmarats Serra L, Pericas Ramis P, Caldes Llull O, Grau Sepulveda A, Frontera G, Vaquer Segui A, Noris M, Bethencourt Gonzalez A, Climent Paya V, Martinez Moreno M, Saura D, Oliva MJ, Sanchez Quinones J, Garcia Honrubia A, Valdes M, De La Morena G, Terricabras M, Costabel JP, Ronderos R, Evangelista A, Venturini C, Galve E, Nemes A, Neubauer S, Rahman Haley S, Banner N, Teixeira R, Caetano F, Almeida I, Trigo J, Botelho A, Silva J, Nascimento J, Goncalves L, Tesic M, Jovanovic I, Petrovic O, Boricic-Kostic M, Dragovic M, Petrovic M, Stepanovic J, Banovic M, Vujisic-Tesic B, Guergelcheva V, Chamova T, Sarafov S, Tournev I, Denchev S, Ikonomidis I, Psarogiannakopoulos P, Tsirigotis P, Paraskevaidis I, Lekakis J, Pelliccia A, Natali BM, Cameli M, Focardi M, Bonifazi M, Mondillo S, Lima C, Assed L, Kalil Filho R, Mady C, Bochi EA, Salemi VMC, Targher G, Valbusa F, Rossi A, Lanzoni L, Lipari P, Zenari L, Molon G, Canali G, Barbieri E, Li L, Craft M, Nanda M, Lorenzo JM, Kutty S, Bombardini T, Sparla S, Di Tommaso C, Losito M, Incampo E, Maccherini M, Mondillo S, Werther Evaldsson A, Radegran G, Stagmo M, Waktare J, Roijer A, Meurling CJ, Hui W, Meijboom FJ, Bijnens B, Dragulescu A, Mertens L, Friedberg MK, Sensoy B, Suleymanoglu M, Akin Y, Sahan E, Sasmaz H, Pasca L, Buzdugan E, Chis B, Stoicescu L, Lynce FC, Smith KL, Mete M, Isaacs C, Viapiana O, Di Nora C, Ognibeni F, Fracassi E, Giollo A, Mazzone C, Faganello G, Di Lenarda A, Rossini M, Galrinho A, Branco L, Timoteo AT, Rodrigues I, Daniel P, Rosa S, Ferreira L, Ferreira R, Polak L, Krauza G, Stokfisz K, Zielinska M, Branco LM, Galrinho A, Mota Carmo M, Teresa Timoteo A, Aguiar Rosa S, Abreu J, Pinto Teixeira P, Viveiros Monteiro A, Cruz Ferreira R, Peeraphatdit T, Chaiteerakij R, Klarich KW, Masia S, Necas J, Nistri S, Negri F, Barbati G, Cioffi G, Russo G, Mazzone C, Faganello G, Pandullo C, Di Lenarda A, Durante A, Rovelli E, Genchi V, Trabattoni L, Zerboni SC, Cattaneo L, Butti E, Ferrari G, Luneva E, Mitrofanova L, Uspensky V, Zemtsovsky E, Kasprzak JD, Rosner S, Karl M, Ott I, Sonne C, Ali Lahmar HM, Hammou L, Forsey J, Gowing L, Miller F, Ramanujam P, Stuart AG, Williams CA, Bandera F, Pellegrino M, Carbone F, Labate V, Alfonzetti E, Guazzi M, Patel NR, Raju P, Beale L, Brickley G, Lloyd GW, Fernandez-Golfin C, Gonzalez A, Rincon LM, Hinojar R, Garcia A, Megias A, Jimenez-Nacher JJ, Moya JL, Zamorano JL, Molon G, Canali G, Bonapace S, Chiampan A, Albrigi L, Barbieri E, Noris Mora M, Rodriguez Fernandez A, Exposito Pineda C, Grande C, Gonzalez Colino R, Macaya Ten F, Fernandez Vazquez X, Fortuny Frau E, Bethencourt Gonzalez A, Karvandi M, Blaszczyk R, Zarczuk R, Brzozowski W, Janowski M, Wysokinski A, Stanczyk B, Myftiu S, Teferici D, Quka A, Dado E, Djamandi J, Kresto L, Duka A, Kristo A, Balla I, Issa Z, Moiduddin N, Siblini G, Bulbul Z, Abid L, Abid D, Kammoun S, Rush E, Craft M, Goodwin J, Kreikemeier R, Cantinotti M, Kutty S, Zolaly MA, Khoshhal SQ, El-Harbi K, Tarawah A, Al-Hawsawi Z, Al-Mozainy I, Bakhoum SWG, Nabil MN, Elebrashy IN, Chinali M, Albanese S, Carotti A, Iacobelli R, Esposito C, Secinaro A, Moscogiuri G, Pasquini L, Malvezzi Caracciolo M, Bianchi RM, Caso P, Arenga F, Riegler L, Scarafile R, D'andrea A, Russo MG, Calabro' P, Simic DS, Peric VP, Mujovic NM, Marinkovic MM, Jankovic NJ, Shim A, Wejner-Mik P, Kasprzak JD, Lipiec P, Jain N, Kharwar R, Saran RK, Narain VS, Dwivedi SK, Sethi R, Chandra S, Pradhan A, Safal S, Marchetti MF, Cacace C, Congia M, Nissardi V, Ruscazio M, Meloni L, Montisci R, Gallego Sanchez G, Calero S, Portero JJ, Tercero A, Garcia JC, Barambio M, Martinez Lazaro R, Meretta AH, Perea GO, Belcastro F, Aguirre E, De Luca I, Henquin R, Masoli O. Poster session 2THE IMAGING EXAMINATIONP536Appropriate use criteria of transthoracic echocardiography and its clinical impact: a continuous challengeP537Implementation of proprietary plug-ins in the DICOM-based computerized echo reporting system fuels the use of 3D echo and deformation imaging in the clinical routine of a multivendor laboratoryP538Exercise stress echocardiography appropriate use criteria: real-life cases classification ease and agreement among cardiologistsANATOMY AND PHYSIOLOGY OF THE HEART AND GREAT VESSELSP539Functional capacity in older people with normal ejection fraction correlates with left ventricular functional reserve and carotid-femoral pulse wave velocity but not with E/e and augmentation indexP540Survey of competency of practitioners for diagnosis of acute cardiopulmonary diseases manifest on chest x-rayASSESSMENT OF DIAMETERS, VOLUMES AND MASSP541Left atrium remodeling in dialysis patients with normal ejection fractionP542The prediction of postinfarction left ventricular remodeling and the role of of leptin and MCP-1 in regard to the presence of metabolic syndromeP543Ascending aorta and common carotid artery: diameters and stiffness in a group of 584 healthy subjectsAssessments of haemodynamicsP544Alternate echo parameters in patients without estimable RVSPAssessment of systolic functionP545Reduced contractile performance in heart failure with preserved ejection fraction: determination using novel preload-adjusted maximal left ventricular ejection forceP546Left ventricular dimensions and prognosis in acute coronary syndromesP547Time course of myocardial alterations in a murine model of high fat diet: A strain rate imaging studyP548Subclinical left ventricular systolic dysfunction in patients with premature ventricular contractionsP549Global myocardial strain by CMR-based feature tracking (FT) and tagging to predict development of severe left ventricular systolic dysfunction after acute st-elevation myocardial infarctionP550Echocardiographic analysis of left and right ventricular function in patients after mitral valve reconstructionP551The role of regional longitudinal strain assessment in predicting response to cardiac resynchronization therapy in patients with left ventricular systolic dysfunction and left bundle branch blockP552Speckle tracking automatic border detection improves echocardiographic evaluation of right ventricular systolic function in repaired tetralogy of fallot patients: comparison with MRI findingsP553Echocardiography: a reproducible and relevant tool in pah? intermediate results of the multicentric efort echogardiographic substudy (evaluation of prognostic factors and therapeutic targets in pah)Assessment of diastolic functionP554Relationship between left ventricular filling pressures and myocardial fibrosis in patients with uncomplicated arterial hypertensionP555Cardiac rehabilitation improves echocardiographic parameters of diastolic function in patients with ischemic heart diseaseP556Diastolic parameters in the calcified mitral annulusP557Biomarkers and echocardiography - combined weapon to diagnose and prognose heart failure with and without preserved ejection fractionP558Diastolic function changes of the maternal heart in twin and singleton pregnancyIschemic heart diseaseP559Syntax score as predictor for the correlation between epicardial adipose tissue and the severity of coronary lesions in patients with significant coronary diseaseP560Impact of strain analysis in ergonovine stress echocardiography for diagnosis vasospastic anginaP561Cardiac magnetic resonance tissue tracking: a novel method to predict infarct transmurality in acute myocardial infarctionP562Infarct size is correlated to global longitudinal strain but not left ventricular ejection fraction in the early stage of acute myocardial infarctionP563Magnetic resonance myocardial deformation assessment with tissue tracking and risk stratification in acute myocardial infarction patientsP564Increase in regional end-diastolic wall thickness by transthoracic echocardiography as a biomarker of successful reperfusion in anterior ST elevation acute myocardial infarctionP565Mitral regurgitation is associated with worse long-term prognosis in ST-segment elevation myocardial infarction treated with primary percutaneous coronary interventionP566Statistical significance of 3D motion and deformation indexes for the analysis of LAD infarctionHeart valve DiseasesP567Paradoxical low gradient aortic stenosis: echocardiographic progression from moderate to severe diseaseP568The beneficial effects of TAVI in mitral insufficiencyP569Impact of thoracic aortic calcification on the left ventricular hypertrophy and its regression after aortic valve replacement in patients with severe aortic stenosisP570Additional value of exercise-stress echocardiography in asymptomatic patients with aortic valve stenosisP571Valvulo-arterial impedance in severe aortic stenosis: a dual imaging modalities studyP572Left ventricular mechanics: novel tools to evaluate left ventricular performance in patients with aortic stenosisP573Comparison of long-term outcome after percutaneous mitral valvuloplasty versus mitral valve replacement in moderate to severe mitral stenosis with left ventricular dysfunctionP574Incidence of de novo left ventricular dysfunction in patient treated with aortic valve replacement for severe aortic regurgitationP575Transforming growth factor-beta dependant progression of the mitral valve prolapseP576Quantification of mitral regurgitation with multiple jets: in vitro validation of three-dimensional PISA techniqueP577Impaired pre-systolic contraction and saddle-shape deepening of mitral annulus contributes to atrial functional regurgitation: a three-dimensional echocardiographic studyP578Incidence and determinants of left ventricular (lv) reverse remodeling after MitraClip implantation in patients with moderate-to severe or severe mitral regurgitation and reduced lv ejection fractionP579Severe functional tricuspid regurgitation in rheumatic heart valve disease. New insights from 3D transthoracic echocardiographyP58015 years of evolution of the etiologic profile for prosthetic heart valve replacement through an echocardiography laboratoryP581The role of echocardiography in the differential diagnosis of prolonged fever of unknown originP582Predictive value for paravalvular regurgitation of 3-dimensional anatomic aortic annulus shape assessed by multidetector computed tomography post-transcatheter aortic valve replacementP583The significance and advantages of echo and CT imaging & measurement at transcatherter aortic valve implantation through the left common carotid accessP584Comparison of the self-expandable Medtronic CoreValve versus the balloon-expandable Edwards SAPIEN bioprostheses in high-risk patients undergoing transfemoral aortic valve implantationP585The impact of transcatheter aortic valve implantation on mitral regurgitation severityP586Echocardiographic follow up of children with valvular lesions secondary to rheumatic heart disease: Data from a prospective registryP587Valvular heart disease and different circadian blood pressure profilesCardiomyopathiesP588Comparison of transthoracic echocardiography versus cardiac magnetic for implantable cardioverter defibrillator therapy in primary prevention strategy dilated cardiomyopathy patientsP589Incidence and prognostic significance of left ventricle reverse remodeling in a cohort of patients with idiopathic dilated cardiomyopathyP590Early evaluation of diastolic function in fabry diseaseP591Echocardiographic predictors of atrial fibrillation development in hypertrophic cardiomyopathyP592Altered Torsion mechanics in patients with hypertrophic cardiomyopathy: LVOT-obstruction is the topdog?P593Prevention of sudden cardiac death in hypertrophic cardiomyopathy: what has changed in the guidelines?P594Coronary microcirculatory function as determinator of longitudinal systolic left ventricular function in hypertrophic cardiomyopathyP595Detection of subclinical myocardial dysfunction by tissue Doppler ehocardiography in patients with muscular dystrophiesP596Speckle tracking myocardial deformation analysis and three dimensional echocardiography for early detection of chemotherapy induced cardiac dysfunction in bone marrow transplantation patientsP597Left ventricular non compaction or hypertrabeculation: distinguishing between physiology and pathology in top-level athletesP598Role of multi modality imaging in familiar screening of Danon diseaseP599Early impairment of global longitudinal left ventricular systolic function independently predicts incident atrial fibrillation in type 2 diabetes mellitusP600Fetal cardiovascular programming in maternal diabetes mellitus and obesity: insights from deformation imagingP601Longitudinal strain stress echo evaluation of aged marginal donor hearts: feasibility in the Adonhers project.P602Echocardiographic evaluation of left ventricular size and function following heart transplantation - Gender mattersSystemic diseases and other conditionsP603The impact of septal kinetics on adverse ventricular-ventricular interactions in pulmonary stenosis and pulmonary arterial hypertensionP604Improvement in right ventricular mechanics after inhalation of iloprost in pulmonary hypertensionP605Does the treatment of patients with metabolic syndrome correct the right ventricular diastolic dysfunction?P606Predictors of altered cardiac function in breast cancer survivors who were treated with anthracycline-based therapyP607Prevalence and factors related to left ventricular systolic dysfunction in asymptomatic patients with rheumatoid arthritis: a prospective tissue-doppler echocardiography studyP608Diastolic and systolic left ventricle dysfunction presenting different prognostic implications in cardiac amyloidosisP609Diagnostic accuracy of Bedside Lung Ultrasonography in Emergency (BLUE) protocol for the diagnosis of pulmonary embolismP610Right ventricular systolic dysfunction and its incidence in breast cancer patients submitted to anthracycline therapyP611Right ventricular dysfunction is an independent predictor of survival among cirrhotic patients undergoing liver transplantCongenital heart diseaseP612Hypoplasia or absence of posterior leaflet: a rare congenital anomaly of the mitral valveP613ECHO screening for Barlow disease in proband's relativesDiseases of the aortaP614Aortic size distribution and prognosis in an unselected population of patients referred for standard transthoracic echocardiographyP615Abdominal aorta aneurysm ultrasonographic screening in a large cohort of asympromatic volounteers in an Italian urban settingP616Thoracic aortic aneurysm and left ventricular systolic functionStress echocardiographyP617Wall motion score index, systolic mitral annulus velocity and left ventricular mass predicted global longitudinal systolic strain in 238 patients examined by stress echocardiographyP618Prognostic parameters of exercise-induced severe mitral valve regurgitation and exercise-induced systolic pulmonary hypertensionP619Risk stratification after myocardial infarction: prognostic value of dobutamine stress echocardiographyP620relationship between LV and RV myocardial contractile reserve and metabolic parameters during incremental exercise and recovery in healthy children using 2-D strain analysisP621Increased peripheral extraction as a mechanism compensatory to reduced cardiac output in high risk heart failure patients with group 2 pulmonary hypertension and exercise oscillatory ventilationP622Can exercise induced changes in cardiac synchrony predict response to CRT?Transesophageal echocardiographyP623Fully-automated software for mitral valve assessment in chronic mitral regurgitation by three-dimensional transesophageal echocardiographyP624Real-time 3D transesophageal echocardiography provides more accurate orifice measurement in percutaneous transcatheter left atrial appendage closureP625Percutaneous closure of left atrial appendage: experience of 36 casesReal-time three-dimensional TEEP626Real-time three-dimensional transesophageal echocardiography during pulmonary vein cryoballoon ablation for atrial fibrilationP627Three dimensional ultrasound anatomy of intact mitral valve and in the case of type 2 disfunctionTissue Doppler and speckle trackingP629Left ventricle wall motion tracking from echocardiographic images by a non-rigid image registrationP630The first experience with the new prototype of a robotic system for remote echocardiographyP631Non-invasive PCWP influence on a loop diuretics regimen monitoring model in ADHF patients.P632Normal range of left ventricular strain, dimensions and ejection fraction using three-dimensional speckle-tracking echocardiography in neonatesP633Circumferential ascending aortic strain: new parameter in the assessment of arterial stiffness in systemic hypertensionP634Aortic vascular properties in pediatric osteogenesis imperfecta: a two-dimensional echocardiography derived aortic strain studyP635Assessment of cardiac functions in children with sickle cell anemia: doppler tissue imaging studyP636Assessment of left ventricular function in type 1 diabetes mellitus patients by two-dimensional speckle tracking echocardiography: relation to duration and control of diabetesP637A study of left ventricular torsion in l-loop ventricles using speckle-tracking echocardiographyP638Despite No-Reflow, global and regional longitudinal strains assessed by two-dimensional speckle tracking echocardiography are predictive indexes of left ventricular remodeling in patients with STEMIP639The function of reservoir of the left atrium in patients with medicaly treated arterial hypertensionP640The usefulness of speckle tracking analysis for predicting the recovery of regional systolic function after myocardial infarctionP641Two dimensional speckle tracking echocardiography in assessment of left ventricular systolic function in patients with rheumatic severe mitral regurgitation and normal ejection fractionP642The prediction of left-main and tripple vessel coronary artery disease by tissue doppler based longitudinal strain and strain rate imagingP643Role of speckle tracking in predicting arrhythmic risk and occurrence of appropriate implantable defibrillator Intervention in patients with ischemic and non-ischemic cardiomyopathyComputed Tomography & Nuclear CardiologyP644Cardiac adrenergic activity in patients with nonischemic dilated cardiomyopathy. Correlation with echocardiographyP645Different vascular territories and myocardial ischemia, there is a gradient of association? Eur Heart J Cardiovasc Imaging 2015. [DOI: 10.1093/ehjci/jev278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Chiu CT, Wang CW, Chen FC, Chin SW, Liu CC, Lee MJ, Chung WC, Chien YW, Chang HJ, Lee CY. Sexual genetic and simple sequence repeat (SSR) analysis for molecular marker development on the all hermaphrodite papaya. Genet Mol Res 2015; 14:2502-11. [PMID: 25867396 DOI: 10.4238/2015.march.30.8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The papaya (Carica papaya L.) is one of the most important economic tropical fruits in the world, and the hermaphrodite is the preferred type in field cultures. We analyzed the sexual ratio of offspring from the cultivar 'Taiwan Seed Station No. 7' (T7) by a self-cross and its cross with Taichung Sunrise (TS). Female progeny from the T7 self-crossing were not observed. This finding may be caused by a lethal gene that is linked to females. In this study, we selected 192 simple sequence repeats (SSRs) to analyze the polymorphism between T7 and TS. A total of 37 SSRs were identified for T7 and TS. In addition, 14 SSRs served as the molecular makers for identification of T7, TS and their hybrid offsprings. Thus, the results show that the genetic similarity between T7 and TS is rather high. This suggests that T7 may be a mutant of TS. Phylogenetic analysis from the SSR polymorphisms of the above parent strains and 15 F1 offspring revealed the genetic distance of the F1 offspring located between T7 and TS. The results of this study may provide an opportunity for elucidating the genetic characteristics of all hermaphrodites via identification of molecular makers.
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Affiliation(s)
- C T Chiu
- Pingtung Seed & Seedling Research Center, Taiwan Seed Improvement and Propagation Station, Pingtung, Taiwan
| | - C W Wang
- Department of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - F C Chen
- Department of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - S W Chin
- Department of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - C C Liu
- Institute of Genomics and Bioinformatics, National Chung Hsing University, Taichung, Taiwan
| | - M J Lee
- Taiwan Seed Improvement and Propagation Station, Council of Agriculture, Taichung, Taiwan
| | - W C Chung
- Taiwan Seed Improvement and Propagation Station, Council of Agriculture, Taichung, Taiwan
| | - Y W Chien
- Department of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - H J Chang
- Taiwan Seed Improvement and Propagation Station, Council of Agriculture, Taichung, Taiwan
| | - C Y Lee
- Department of Plant Industry, National Pingtung University of Science and Technology, Pingtung, Taiwan.
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Abstract
BACKGROUND Shanghai fever, a community-acquired enteric illness associated with sepsis caused by Pseudomonas aeruginosa, was first described in 1918. The understanding of Shanghai fever is incomplete. OBJECTIVE To delineate the clinical features and to examine the host and microbial factors associated with Shanghai fever. METHODS We prospectively enrolled 27 consecutive previously healthy children with community-acquired P aeruginosa enteritis and sepsis between July 2003 and June 2012. An immunological investigation, including measurement of serum immunoglobulin levels and lymphocyte subpopulations, was performed. The clonal relationship of bacterial isolates was determined by multilocus sequence typing (MLST) and the virulence of isolates was measured using cellular and animal models. RESULTS The median age of the patients was 7 months; 24 (89%) were aged <1 year. The most common clinical manifestations were fever (100%), diarrhoea (96%) and shock (81%). Leucopenia, thrombocytopenia, high C-reactive protein levels, coagulopathy and hypoalbuminaemia were the key laboratory findings. Necrotising enteritis with or without bowel perforation, ecthyma gangrenosum and seizures were main complications. The death rate was 15%. No common primary immune deficiency was identified. MLST genotypes indicated that isolates from Shanghai fever were non-clonal, but they shared similar phenotypes which were invariably cytotoxic, invasive and adhesive in cellular experiments and caused prolonged gut colonisation and more death than respiratory and laboratory control strains in mice. CONCLUSIONS Shanghai fever is a sporadic community-acquired disease of previously healthy infants that manifests as sepsis associated with P aeruginosa enteric disease. Both host and microbial factors play a role in pathogenesis.
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Affiliation(s)
- Chih-Hsien Chuang
- Graduate Institute of Clinical Medical Sciences, Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Yi-Hsin Wang
- Molecular Infectious Diseases Research Center, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Hsin-Ju Chang
- Molecular Infectious Diseases Research Center, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Hsiu-Ling Chen
- Molecular Infectious Diseases Research Center, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Yhu-Chering Huang
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Children's Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Tzou-Yien Lin
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Chang Gung Children's Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Egon A Ozer
- Division of Infectious Diseases, Department of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Jonathan P Allen
- Department of Microbiology and Immunology, Northwestern University, Chicago, Illinois, USA
| | - Alan R Hauser
- Department of Microbiology and Immunology, Northwestern University, Chicago, Illinois, USA
| | - Cheng-Hsun Chiu
- Molecular Infectious Diseases Research Center, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan
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Park JW, Chang HJ, Kim BC, Yeo HY, Kim DY. Clinical validity of tissue carcinoembryonic antigen expression as ancillary to serum carcinoembryonic antigen concentration in patients curatively resected for colorectal cancer. Colorectal Dis 2013; 15:e503-11. [PMID: 23711333 DOI: 10.1111/codi.12304] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Accepted: 01/13/2013] [Indexed: 02/08/2023]
Abstract
AIM Although serum carcinoembryonic antigen (CEA) level is prognostic in colorectal cancer, the prognostic role of tumour CEA expression is unclear. The aim of this study is to identify the prognostic and surveillance roles of tissue CEA expression along with serum CEA concentration in patients curatively resected for colorectal cancer. METHOD Between January and December 2003, 294 patients who underwent curative resection for colorectal cancer were included in the study. Correlation of tissue CEA expression with overall survival (OS), disease-free survival (DFS) and elevated serum CEA concentration at tumour recurrence were analysed. RESULTS Tissue CEA expression was positive in 215 patients (73.1%). CEA expression was an independent prognostic factor for OS [hazard ratio (HR) = 2.537, 95% confidence interval (CI) = 1.065-6.042, P = 0.035] and DFS (HR = 3.090, 95% CI = 1.405-6.795, P = 0.005). Elevation of serum CEA at tumour recurrence was significantly lower in patients without than with tissue CEA expression (14.3 vs 57.6%, P = 0.045). Moreover, when patients were grouped according to a combination of serum CEA elevation and tissue CEA expression, those with tissue CEA expression and elevated serum CEA (group 3) had significantly poorer OS and DFS (P < 0.001 each) than those without CEA expression and elevated serum CEA (group 1) and those with either tissue CEA expression or elevated serum CEA (group 2). OS (P = 0.006) and DFS (P = 0.027) were both significantly greater in group 1 than in group 2. CONCLUSION Tissue CEA expression is a prognostic factor in patients with colorectal cancer. Analysis of tissue CEA expression may be helpful in determining the clinical utility of serial measurements of serum CEA as surveillance in patients with curatively resected colorectal cancer.
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Affiliation(s)
- J W Park
- Center for Colorectal Cancer, National Cancer Center, Goyang, Korea; Colorectal Cancer Branch, Research Institute, National Cancer Center, Goyang, Korea
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Kuo TJ, Chang HJ, Hsieh YD, Wu CN, Chen CC. An alternative approach sequence to early implant placement and bone grafting over upper incisor traumatic loss in a malocclusion patient. J ORAL IMPLANTOL 2013; 41:214-8. [PMID: 23713415 DOI: 10.1563/aaid-joi-d-12-00316] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Tsu-Jen Kuo
- 1 Department of Dentistry, Kaohsiung Veterans General Hospital, Kaohsiung City, Taiwan (R.O.C.)
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Han KS, Lim SW, Sohn DK, Chang HJ, Oh JH, Lee JH, Kim HR, Kim YJ. Clinicopathological characteristics of T1 colorectal cancer without background adenoma. Colorectal Dis 2013; 15:e124-9. [PMID: 23294594 DOI: 10.1111/codi.12102] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Accepted: 10/14/2012] [Indexed: 02/08/2023]
Abstract
AIM Background adenoma (BGA) is defined as benign adenomatous tissue contiguous to resected carcinomas, and the absence of BGA in a tumour is considered a histological criterion of de novo cancers. The present study aimed to identify the clinicopathological characteristics of T1 colorectal cancer (CRC) without BGA. METHOD A retrospective review was carried out of prospectively collected data from two centres: the National Cancer Center, Korea; and Chonnam National University Hwasun Hospital, Korea. A total of 590 patients with T1 CRC, treated by endoscopic or surgical resection between January 2001 and August 2011, were enrolled. Details regarding gender, age, tumour location, endoscopic gross type, tumour size, depth of submucosal (SM) invasion, angiolymphatic invasion, tumour grade, budding and lymph node (LN) metastasis were evaluated with regard to the presence or absence of BGA. RESULTS BGA was absent in 197 (33.4%) patients. Tumour size <20 mm, flat or depressed type, deep SM depth and tumour budding were associated with the absence of BGA in univariate and multivariate analyses (P < 0.05). In surgically resected patients, LN metastases were significantly associated with the absence of BGA (P = 0.022). CONCLUSION T1 CRC without BGA presented several characteristics of small size (<20 mm), flat or depressed type, deep SM depth (SM 2/3), LN metastasis and tumour budding. These results indicate that de novo cancers may have a more invasive potential.
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Affiliation(s)
- K S Han
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea
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Suh JH, Han KS, Kim BC, Hong CW, Sohn DK, Chang HJ, Kim MJ, Park SC, Park JW, Choi HS, Oh JH. Predictors for lymph node metastasis in T1 colorectal cancer. Endoscopy 2012; 44:590-5. [PMID: 22638780 DOI: 10.1055/s-0031-1291665] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
BACKGROUND AND STUDY AIMS It is critical that the risk of lymph node metastasis (LNM) is evaluated for determining the suitability of endoscopic resection for T1 colorectal cancer (CRC). Reported risk factors for LNM in completely resected T1 CRC are deep submucosal invasion, grade 3, angiolymphatic invasion, and budding. The aim of the present study was to identify the histopathologic factors associated with LNM in T1 CRC. PATIENTS AND METHODS The study involved 435 patients with T1 CRC treated by endoscopic or surgical resection between January 2001 and April 2010 at the National Cancer Center, Korea. The 435 patients were classified into two groups - those undergoing surgical resection (n = 324) and those undergoing endoscopic resection (n = 111). In the surgically resected group, details regarding depth of submucosal invasion, angiolymphatic invasion, tumor grade, budding, and background adenoma (BGA) were evaluated with respect to presence or absence of LNM. In the endoscopically resected group, the results of follow-ups and additional salvage surgeries were studied. RESULTS In the surgically resected group, LNM was detected in 42 patients (13.0 %). Grade 3, angiolymphatic invasion, budding, and the absence of BGA were identified as factors associated with LNM in univariate and multivariate analyses (P < 0.05). Among the 50 patients in the endoscopically resected group with high risk, three were diagnosed as being LNM-positive during the follow-up period. There was no LNM in the endoscopically resected group with low risk. CONCLUSIONS Grade 3, angiolymphatic invasion, budding, and the absence of BGA are the risk factors that predict LNM in patients with T1 CRC. In cases where endoscopically resected T1 CRC has no risk factor, cautious follow-up could be recommended. However, if the tumor has any risk factor, additional surgical resection should be considered.
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Affiliation(s)
- J H Suh
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea
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Lee SD, Kim TH, Kim DY, Baek JY, Kim SY, Chang HJ, Park SC, Park JW, Oh JH, Jung KH. Lymph node ratio is an independent prognostic factor in patients with rectal cancer treated with preoperative chemoradiotherapy and curative resection. Eur J Surg Oncol 2012; 38:478-83. [PMID: 22465588 DOI: 10.1016/j.ejso.2012.03.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2011] [Revised: 02/26/2012] [Accepted: 03/05/2012] [Indexed: 01/04/2023] Open
Abstract
PURPOSE To evaluate the prognostic effect of lymph node ratio (LNR) in patients with locally advanced rectal cancer who were treated with curative resection after preoperative chemoradiotherapy (CRT). METHODS Between October 2001 and December 2007, 519 patients who had undergone curative resection of primary rectal cancer after preoperative CRT were enrolled. Of these, 154 patients were positive for lymph node (LN) metastasis and were divided into three groups according to the LNR (≤ 0.15 [n=80], 0.16-0.3 [n=44], >0.3 [n=30]) to evaluate the prognostic effect on overall survival (OS) and disease-free survival (DFS). RESULTS LNR (≤ 0.15, 0.16-0.3, and >0.3) was significantly associated with 5-year OS (90.3%, 75.1%, and 45.1%; p<0.001) and DFS (66.7%, 55.8%, and 21.9%; p<0.001) rates. In a multivariate analysis, LNR (≤ 0.15, 0.16-0.3, and >0.3) was a significant independent prognostic factor for OS (hazard ratios [HRs], 1, 3.609, and 8.197; p<0.001) and DFS (HRs, 1, 1.699, and 3.960; p<0.001). LNR had a prognostic impact on OS and DFS in patients with <12 harvested LNs, as well as in those with ≥ 12 harvested LNs (p<0.05). CONCLUSION LNR was a significant independent prognostic predictor for OS and DFS in patients with locally advanced rectal cancer who were treated with curative resection after preoperative CRT.
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Affiliation(s)
- S D Lee
- Center for Colorectal Cancer, National Cancer Center, Goyang, Republic of Korea
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Janapatla RP, Chang HJ, Hsu MH, Hsieh YC, Lin TY, Chiu CH. Nasopharyngeal carriage of Streptococcus pneumoniae, Haemophilus influenzae, Moraxella catarrhalis, and Alloiococcus otitidis in young children in the era of pneumococcal immunization, Taiwan. ACTA ACUST UNITED AC 2011; 43:937-42. [PMID: 21892897 DOI: 10.3109/00365548.2011.601754] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
We applied a multiplex polymerase chain reaction (PCR) and culture to detect Streptococcus pneumoniae and detected 3 other respiratory pathogens--Haemophilus influenzae, Moraxella catarrhalis, and Alloiococcus otitidis--simultaneously by PCR, in the nasopharynx of 386 children aged under 5 y. S. pneumoniae was the most common pathogen carried by children in all age groups, with the rate ranging from 15.8% in children aged 3-4 y to 28.6% in children aged 2-3 y. H. influenzae and M. catarrhalis showed similar carriage rates across all the age groups. Only 2 young children (0.5%) carried A. otitidis. Higher carriage of S. pneumoniae was found in children who had not received the heptavalent pneumococcal conjugate vaccine (PCV7). Cefotaxime non-susceptibility was high (51.4%) in S. pneumoniae nasopharyngeal isolates. Serotype 6B was the most common in fully immunized carriers and also in those who received catch-up immunization. Due to low PCV7 coverage in Taiwan, the carriage of vaccine and non-vaccine serotypes of S. pneumoniae in children remains common.
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Lin IC, Gonzalez AM, Chang HJ, Kao SY, Chen TW. A 5-year follow-up of 80 implants in 44 patients placed immediately after the lateral trap-door window procedure to accomplish maxillary sinus elevation without bone grafting. Int J Oral Maxillofac Implants 2011; 26:1079-1086. [PMID: 22010092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Abstract
PURPOSE The present study was performed to evaluate the 5-year status of immediately placed implants subjected to maxillary sinus elevation without grafting. MATERIALS AND METHODS Implants were placed in 2004 and 2005. A minimum of 3 mm of residual bone height (RBH) was required. All implants were placed with a sinus elevation performed through a lateral approach by the trap-door, open-window method without placement of any grafting material. Regular follow-up included oral hygiene instruction, periodontal charting, panoramic radiographs, and cone beam computed tomographic scans. The gained bone height (GBH) in the sinus, peri-implant sulcus depth, and marginal bone loss were analyzed statistically. RESULTS Forty-four patients (26 men, 18 women) with an average age of 58 years received 80 implants, which were followed for 5 years after prosthesis delivery. No patients developed sinusitis or other complications leading to implant loss. The average RBH was 5.06 ± 1.51 mm and the average intrasinus implant length was 7.77 ± 1.69 mm. Survival rates for the implants were 100% after 2 and 5 years. Average GBH was 7.24 ± 1.83 mm at 2 years (range, 3 to 12 mm) and 7.44 ± 1.94 mm at 5 years (P > .05). The average peri-implant sulcus depths were 2.5 ± 0.4 mm at 2 years and 3.1 ± 0.5 mm at 5 years (P < .05). The mean peri-implant marginal bone loss was 1.3 ± 0.3 mm at 2 years and 2.1 ± 0.5 mm at 5 years (P < .05). CONCLUSIONS New bone formation in the sinus was confirmed, and good survival of implants with maxillary sinus elevation by the lateral approach without grafting was observed after 5 years. Attention should be focused on oral hygiene maintenance to ensure peri-implant gingival health.
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Affiliation(s)
- I-Ching Lin
- Oral and Maxillofacial Surgery, Department of Stomatology, Taipei-Veterans General Hospital, Taipei, Taiwan
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Chang HJ, Lee KW, Kim JH, Bang SM, Kim YJ, Kim DW, Kang SB, Lee JS. Adjuvant capecitabine chemotherapy using a tailored-dose strategy in elderly patients with colon cancer. Ann Oncol 2011; 23:911-8. [PMID: 21821549 DOI: 10.1093/annonc/mdr329] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND This study was conducted to analyze the feasibility of adjuvant capecitabine therapy using a tailored-dose escalation strategy in elderly patients with colon cancer (CC). METHODS CC patients (≥ 70 years of age) who received adjuvant capecitabine were enrolled. The starting dosage of capecitabine was 2000 mg/m(2)/day (days 1-14, every 3 weeks). On the second cycle, the dosage was escalated to 2500 mg/m(2)/day if the patient tolerated the first cycle. Dose intensity (DI), toxicity, and the change in quality of life (QoL) were evaluated. RESULTS Of 82 patients enrolled, 67 completed eight cycles. Dose escalation to 2500 mg/m(2)/day was possible in 56 patients, and this dosage was maintained in 24 patients until the completion of chemotherapy (eight cycles). Forty-one patients completed therapy with a DI ≥ 1333 mg/m(2)/day [relative dose intensity (RDI) ≥ 80%]. Toxic effects were tolerable and the QoL was not compromised during treatment. Creatinine clearance < 50 ml/min and Charlson-Age comorbidity index ≥ 8 were related to a reduced capecitabine dosage (RDI < 80%). CONCLUSIONS A tailored-dose escalation strategy was feasible in elderly CC patients receiving adjuvant capecitabine chemotherapy. Decreased renal function and an increased number of comorbidities were independently predictive of reduced administration of the capecitabine dose.
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Affiliation(s)
- H J Chang
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, South Korea
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Kim BC, Chang HJ, Han KS, Sohn DK, Hong CW, Park JW, Park SC, Choi HS, Oh JH. Clinicopathological differences of laterally spreading tumors of the colorectum according to gross appearance. Endoscopy 2011; 43:100-7. [PMID: 21165823 DOI: 10.1055/s-0030-1256027] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND STUDY AIMS Laterally spreading tumors (LST) are classified into two subtypes, with the nongranular type harboring a higher risk of (pre)malignant changes than the granular type. Further subdifferentiation into two subgroups each has been suggested, but the clinical significance of such a subdifferentiation has not previously been studied in detail in larger numbers. PATIENTS AND METHODS Out of 6499 patients diagnosed with colorectal adenomas between January 2006 and November 2008, 153 patients (2.35 %) had 158 LSTs, 96 with a granular and 62 with a nongranular pattern. The former group was subdivided into homogeneous and nodular mixed, the latter group into flat elevated and pseudodepressed. Clinical and histopathological parameters were compared among the four subtypes. RESULTS Parameters were variably distributed between the four groups, with nodular mixed tumors being larger than the other three types ( P < 0.0001). As in other studies, malignant transformation and premalignant lesion (HGIN/CIS) were more frequent in nodular mixed than in homogeneous tumors (45.0 % vs. 5.6 %, P < 0.001), and also more common in pseudodepressed than in flat elevated tumors (41.7 % vs. 13.2 %, P = 0.011). Submucosal invasive cancer was present in 8.3 % of nodular mixed tumors, 7.9 % of flat elevated, and 12.5 % of pseudodepressed, while it was absent in homogeneous tumors. Serrated adenoma was identified in 10.8 % of all LSTs, and sessile serrated adenoma tended to be more common in flat elevated tumors. CONCLUSIONS Further subdifferentiation of the LST lesions to identify lesions at risk of malignant transformation makes most sense in the granular type. Among nongranular LSTs, both subtypes carry a significant risk.
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Affiliation(s)
- B C Kim
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Gyeonggi, Korea
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Jeng YR, Lin TT, Hsu HM, Chang HJ, Shieh DB. Human enamel rod presents anisotropic nanotribological properties. J Mech Behav Biomed Mater 2010; 4:515-22. [PMID: 21396600 DOI: 10.1016/j.jmbbm.2010.12.002] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2010] [Revised: 11/27/2010] [Accepted: 12/05/2010] [Indexed: 10/18/2022]
Abstract
The AFM combined nanoindentation was performed to observe the ultrastructure of enamel rod from various section plans and positions while probing their mechanical and tribological properties of the area. The nanohardness and the elastic modulus of the head region of the enamel rods are significantly higher than that of the tail region and the axial-sectional plane. Both nanohardness and elastic modulus gradually decrease from enamel surface toward dentino-enamel junction. Such a variation correlates well with the decreasing trend of calcium composition from our element analysis. The friction coefficient and nanowear of the enamel showed an inversed trend to the hardness with respect to their relative topological position in the long axis of enamel rod toward DEJ. The relationship between the nanowear depth and the distance from the outer enamel surface to DEJ presented exponential function. The results presented clarify the basic nanomechanical and nanotribological properties of human enamel rods and provide a useful reference for the future development of dental restorative materials.
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Affiliation(s)
- Yeau-Ren Jeng
- Department of Mechanical Engineering of National Chung Cheng University, Chia-Yi, 62100, Taiwan.
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Chang HJ, Oh SN, Park MY, Rha SE, Choi BG. Fraudulent retouching of digital radiographic images--a potential risk. Clin Radiol 2010; 65:967-73. [PMID: 21070899 DOI: 10.1016/j.crad.2010.02.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2009] [Revised: 02/02/2010] [Accepted: 02/09/2010] [Indexed: 11/30/2022]
Abstract
AIM To determine whether radiologists can recognize images retouched to include sham lesions. MATERIALS AND METHODS Ten representative key images were selected of aortic dissection, hepatocellular carcinoma, renal cell carcinoma, colon cancer, liver metastasis, hepatic cyst, gallbladder stones, splenic artery aneurysm, adrenal adenoma, and stomach cancer from abdominal computed tomography (CT) imaging performed in 2008. Five of the key images were replaced with retouched images using image-editing software. The time to complete retouching was recorded for each image. Radiologists were requested to make a diagnosis for the 10 images, and were then asked to identify possible retouched images. The time taken to reach a decision in each case was recorded. Thirty radiologists (13 residents and 17 attending radiologists) participated as reviewers. RESULTS The time to complete retouching was 15.2±3.15 min. None of the reviewers recognized that some images were retouched during diagnosis. The rate of correct diagnosis was 90% (range 71.7-100%). After reviewers were informed of possible image retouching, the detection rate of retouched images was 50% (40-58.3%). This rate was statistically the same as random choice (p=0.876). There was no significant difference between residents and attending radiologists in the detection rate of retouched images (p=0.786). The time to diagnosis and the time to detection of the retouched images were 15 (14-17) and 6 (5-7) min, respectively. CONCLUSION Digital images can be easily retouched, and radiologists have difficulty in identifying retouched images. Radiologists should be aware of the potential fraudulent use of retouched images.
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Affiliation(s)
- H J Chang
- Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 505 Banpo-Dong, Seocho-Ku, Seoul 137-040, Republic of Korea
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Borisevich AY, Chang HJ, Huijben M, Oxley MP, Okamoto S, Niranjan MK, Burton JD, Tsymbal EY, Chu YH, Yu P, Ramesh R, Kalinin SV, Pennycook SJ. Suppression of octahedral tilts and associated changes in electronic properties at epitaxial oxide heterostructure interfaces. Phys Rev Lett 2010; 105:087204. [PMID: 20868130 DOI: 10.1103/physrevlett.105.087204] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2010] [Indexed: 05/29/2023]
Abstract
Epitaxial oxide interfaces with broken translational symmetry have emerged as a central paradigm behind the novel behaviors of oxide superlattices. Here, we use scanning transmission electron microscopy to demonstrate a direct, quantitative unit-cell-by-unit-cell mapping of lattice parameters and oxygen octahedral rotations across the BiFeO3-La0.7 Sr0.3 MnO3 interface to elucidate how the change of crystal symmetry is accommodated. Combined with low-loss electron energy loss spectroscopy imaging, we demonstrate a mesoscopic antiferrodistortive phase transition near the interface in BiFeO3 and elucidate associated changes in electronic properties in a thin layer directly adjacent to the interface.
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Affiliation(s)
- A Y Borisevich
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
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Chang HJ, Huang MY, Yeh CS, Chen CC, Yang MJ, Sun CS, Lee CK, Lin SR. Rapid diagnosis of tuberculosis directly from clinical specimens using a gene chip. Clin Microbiol Infect 2009; 16:1090-6. [PMID: 19732084 DOI: 10.1111/j.1469-0691.2009.03045.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The aim of this study was to explore a gene chip capable of detecting the presence of Mycobacterium tuberculosis isolates directly in clinical sputum specimens and to compare it with current molecular detection techniques. At first, we selected 13 M. tuberculosis-specific target genes to construct a gene chip for rapid diagnosis. Using the membrane array method, we diagnosed M. tuberculosis by gene chip directly from 246 sputum specimens from patients suspected of having tuberculosis. Among 80 M. tuberculosis complex (MTBC) culture-positive sputum specimens, the MTBC detection rate was 62.5% (50/80) by PCR-restriction fragment length polymorphism (RFLP), 70% (56/80) by acid-fast staining, and 85% (68/80) by the membrane array method. Furthermore, subspecies showed different gene expression patterns in the membrane array. In conclusion, MTBC could be detected directly in sputum by the membrane array method. The rapidity of detection and the capability of differentiating subspecies could make this method useful in the control and prevention of tuberculosis.
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Affiliation(s)
- H J Chang
- Biomedical Technology Developmental Centre, Fooyin University, Ta-Liao Hsiang, Kaohsiung Hsien, Taiwan
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Chang HJ, Chen TT, Huang LL, Chen YF, Tsai JY, Wang TC, Kuo HC. Optically modulated internal strain in InGaN quantum dots grown on SiN(x) nano masks. Opt Express 2008; 16:920-926. [PMID: 18542166 DOI: 10.1364/oe.16.000920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Optically modulated internal strain has been observed in InGaN quantum dots (QDs) deposited on SiN(x) nano masks. The modulated internal strain can induce a number of intriguing effects, including the change of refractive index and the redshift of InGaN A(1)(LO) phonon. The underlying mechanism can be well accounted for in terms of the variation of internal strain through the converse piezoelectric effect arising from the screening of the internal electric field due to spatial separation of photoexcited electrons and holes. Our results point out a convenient way for the fine tuning of physical properties in nitride-based semiconductor nanostructures, which is very important for high quality optoelectronic devices.
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Affiliation(s)
- H J Chang
- Department of Physics, National Taiwan University, Taipei 106, Taiwan
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Lim SB, Jeong SY, Choi HS, Sohn DK, Hong CW, Jung KH, Chang HJ, Park JG, Choi IJ, Kim CG. Synchronous gastric cancer in primary sporadic colorectal cancer patients in Korea. Int J Colorectal Dis 2008; 23:61-5. [PMID: 17724601 DOI: 10.1007/s00384-007-0366-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/26/2007] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS Colorectal cancer has been reported to be the malignancy most frequently associated with gastric cancer in Korea. The aim of this study was to define the frequency and clinical characteristics of synchronous gastric cancer detected at preoperative esophagogastroduodenoscopy (EGD) in colorectal cancer patients. MATERIALS AND METHODS This prospective study analyzed the EGD results from 1,542 consecutive colorectal cancer patients who underwent surgery from January 2003 to December 2005 at the Center for Colorectal Cancer, National Cancer Center, Korea. RESULTS Of the 1,542 cases, 1,155 (74.9%) underwent EGD at our center and 387 underwent EGD at other hospitals within 6 months before surgery. Of the 1,542 cases, synchronous gastric cancers were detected in 31 cases (2.0%). Of these 31 cases, 26 had early gastric cancer (EGC; 83.9%) and 5 had advanced gastric cancer. Ten (38.5%) of the 26 EGC cases were managed using endoscopic mucosal resection. Compared to colorectal cancer patients without synchronous gastric cancer, the group of patients with synchronous gastric cancer was older (65.5+/-9.6 vs 58.4+/-11.3 years, p=0.001) and had a greater proportion of males (77.4 vs 59.4%, p=0.043). CONCLUSION This study found that 2% of Korean sporadic colorectal cancer patients had synchronous gastric cancer. A preoperative EGD for colorectal cancer patients is likely to greatly assist in the diagnosis of synchronous gastric cancer at an early stage and the implementation of appropriate minimally invasive treatment.
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Affiliation(s)
- S B Lim
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang-si, Korea
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Park JW, Sohn DK, Hong CW, Han KS, Choi DH, Chang HJ, Lim SB, Choi HS, Jeong SY. The usefulness of preoperative colonoscopic tattooing using a saline test injection method with prepackaged sterile India ink for localization in laparoscopic colorectal surgery. Surg Endosc 2007; 22:501-5. [PMID: 17704874 DOI: 10.1007/s00464-007-9495-2] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2007] [Revised: 05/24/2007] [Accepted: 06/12/2007] [Indexed: 02/07/2023]
Abstract
BACKGROUND Laparoscopic surgery for colorectal neoplasm requires precise tumor localization. The authors have assessed the safety and efficacy of colonoscopic tattooing using a saline test injection method with prepackaged sterile India ink for tumor localization in laparoscopic colorectal surgery. METHODS Between July 2004 and January 2007, 63 patients underwent colonoscopic tattooing using prepackaged sterile India ink before laparoscopic surgery of colorectal tumors. Patient medical records and operation videos were retrospectively assessed. RESULTS Tattoos were visualized intraoperatively in 62 (98.4%) of the 63 patients, and colorectal tumors were accurately localized in 61 patients (96.8%). In one patient, the tattoo could not be detected, whereas in another patient, it was visualized but the serosal surface of the rectosigmoid colon was stained diffusely. Both of these patients underwent intraoperative colonoscopy. Localized leakages of ink were identified in six patients (9.5%) during surgery. However, five of these patients had no symptoms, and the sixth patient, who underwent polypectomy and tattooing simultaneously, felt mild chilling without fever or abdominal pain. CONCLUSIONS Preoperative colonoscopic tattooing using a saline test injection method with prepackaged sterile India ink is a safe and effective method for tumor localization in laparoscopic colorectal surgery.
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Affiliation(s)
- J W Park
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, 809 Madu-dong, Ilsan-gu, Goyang, Gyeonggi, 411-769, Korea
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Chang HJ, Hsieh YP, Chen TT, Chen YF, Liang CT, Lin TY, Tseng SC, Chen LC. Strong luminescence from strain relaxed InGaN/GaN nanotips for highly efficient light emitters. Opt Express 2007; 15:9357-65. [PMID: 19547278 DOI: 10.1364/oe.15.009357] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Semiconductor heterostructures represent the most important building block for current optoelectronic devices. One of the common features of semiconductor heterostructures is the existence of internal strain due to lattice mismatch. The internal strain can tilt the band alignment and significantly alter the physical properties of semiconductor heterostructures, such as reducing the internal quantum efficiency of a light emitter. Here, we provide a convenient route to release the internal strain by patterning semiconductor heterostructures into nanotip arrays. The fabrication of the nanotip arrays was achieved by self-masked dry etching technique, which is simple, low cost and compatible with current semiconductor technologies. By implementing our approach to InGaN/GaN multiple quantum wells, we demonstrate that the light emission can be enhanced by up to 10 times. Our approach renders an excellent opportunity to manipulate the internal strain, and is very useful to create highly efficient solid state emitters.
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Chang HJ, Chen TW, Chen JW, Hong WC, Tsai WC, Chen YF, Guo GY. Current and strain-induced spin polarization in InGaN/GaN superlattices. Phys Rev Lett 2007; 98:136403. [PMID: 17501224 DOI: 10.1103/physrevlett.98.136403] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2006] [Indexed: 05/15/2023]
Abstract
The lateral current-induced spin polarization in InGaN/GaN superlattices (SLs) without an applied magnetic field is reported. The fact that the sign of the nonequilibrium spin changes as the current reverses and is opposite for the two edges provides a clear signature for the spin Hall effect. In addition, it is discovered that the spin Hall effect can be strongly manipulated by the internal strains. A theoretical work has also been developed to understand the observed strain-induced spin polarization. Our result paves an alternative way for the generation of spin polarized current.
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Affiliation(s)
- H J Chang
- Department of Physics, National Taiwan University, Taipei 106, Taiwan
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Park JW, Sohn DK, Han KS, Hong CW, Chang HJ, Jung KH, Kim DY, Lim SB, Choi HS, Jeong SY. Endoscopic treatment of completely occluding anastomotic web using incision and ballooning after dye injection. Endoscopy 2007; 39 Suppl 1:E102-3. [PMID: 17440859 DOI: 10.1055/s-2006-945145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- J W Park
- Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Korea
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Kim BN, Jeong JY, Sohn DK, Han KS, Hong CW, Chang HJ, Lim SB, Choi HS, Jeong SY. Pneumatosis cystoides coli of the ascending colon: colonoscopic and CT colonographic features. Endoscopy 2007; 39 Suppl 1:E73-4. [PMID: 17354179 DOI: 10.1055/s-2006-945171] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- B N Kim
- Research Institute and Hospital, National Cancer Center, Goyang, Korea
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