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Park GY, Kim MJ, Oh JY, Kim H, Kang B, Cho SK, Choi WJ, Kim M, Ham DS. High-Throughput Roll-to-Roll Processed Large-Area Perovskite Solar Cells Using Rapid Radiation Annealing Technique. ACS Appl Mater Interfaces 2024. [PMID: 38738751 DOI: 10.1021/acsami.4c04153] [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] [Indexed: 05/14/2024]
Abstract
The development of a stable roll-to-roll (R2R) process for flexible large-area perovskite solar cells (PSCs) and modules is a pressing challenge. In this study, we introduced a new R2R PSC manufacturing system that employs a two-step deposition method for coating perovskite and uses intensive pulsed light (IPL) for annealing. This system has successfully fabricated small-sized cells and the first-ever large-sized, R2R-processed flexible modules. A key focus of our work was to accelerate the conversion of PbI2 to perovskite. To this end, we utilized IPL annealing and incorporated additives into the PbI2 layer. With these modifications, the R2R-processed perovskite films achieved a power conversion efficiency (PCE) of 16.87%, representing the highest reported value for R2R two-step processed PSCs. However, these cells exhibited hysteresis in reverse and forward PCE measurements. To address this, we introduced a dual-annealing process consisting of IPL followed by a 2-min thermal heating step. This approach successfully reduced hysteresis, resulting in low-hysteresis, R2R-processed flexible PSCs. Moreover, we fabricated large-scale flexible modules (10 × 10 cm2) with a PCE of 11.25% using the dual-annealing system, marking a significant milestone in this field.
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Affiliation(s)
- Geon Yeong Park
- Chemical Materials Solutions Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
- Department of Chemical Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Min-Jae Kim
- Chemical Materials Solutions Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
- SKKU Advanced Institute of Nanotechnology (SAINT) and Department of Nano Engineering, Sungkyunkwan University, Suwon 16419, Korea
| | - Joon Young Oh
- Chemical Materials Solutions Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Hoimin Kim
- SKKU Advanced Institute of Nanotechnology (SAINT) and Department of Nano Engineering, Sungkyunkwan University, Suwon 16419, Korea
| | - Boseok Kang
- SKKU Advanced Institute of Nanotechnology (SAINT) and Department of Nano Engineering, Sungkyunkwan University, Suwon 16419, Korea
| | - Seong-Keun Cho
- Chemical Materials Solutions Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Woo Jin Choi
- Chemical Materials Solutions Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Min Kim
- Department of Chemical Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Dong Seok Ham
- Chemical Materials Solutions Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
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Jones O, Claasen MP, Ivanics T, Choi WJ, Gavaria F, Rajendran L, Ghanekar A, Hirschfield G, Gulamhusein A, Shwaartz C, Reichman T, Sayed BA, Selzner M, Bhat M, Tsien C, Jaeckel E, Lilly L, McGilvray ID, Cattral MS, Selzner N, Sapisochin G. Pursuing living donor liver transplantation improves outcomes of patients with autoimmune liver diseases - An intention-to-treat analysis. Liver Transpl 2024:01445473-990000000-00360. [PMID: 38619393 DOI: 10.1097/lvt.0000000000000374] [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] [Received: 08/24/2023] [Accepted: 02/01/2024] [Indexed: 04/16/2024]
Abstract
Background Living donor liver transplantation (LDLT) offers the opportunity to decrease waitlist time and mortality for patients with AILD; autoimmune hepatitis (AIH), primary biliary cholangitis (PBC), and primary sclerosing cholangitis (PSC). We compared the survival of patients with a potential live donor (pLDLT) on the waitlist vs. no potential live donor (pDDLT), on an intention-to-treat (ITT) basis. Methods Our retrospective cohort study investigated adults with AILD listed for liver transplant at our program between 2000 and 2021. The pLDLT group comprised recipients with a potential live donor. Otherwise, they were included in the pDDLT group. ITT survival was assessed from the time of listing. Results Of the 533 patients included, 244(43.8%) had a potential living donor. Waitlist dropout was higher for the pDDLT groups among all AILDs (pDDLT 85[29.4%] vs. pLDLT 9[3.7], p<0.001). The 1-, 3- and 5-year ITT survival rates were higher for pLDLT vs. pDDLT among all AILDs (95.7%vs.78.1%, 89.0%vs.70.1%, and 87.1%vs.65.5%, p<0.001). After adjusting for covariates, pLDLT was associated with a 38% reduction in the risk of death among the AILD cohort (HR:0.62, 95%CI:0.42-0.93[p<0.05]), and 60% among the PSC cohort (HR:0.40, 95%CI:0.22-0.74[p<0.05]). There were no differences in the 1-, 3- and 5-year post-transplant survival between LDLT and DDLT (AILD: 95.6%vs.92.1%, 89.9%vs.89.4%, and 89.1%vs. 87.1%, p=0.41). This was consistent after adjusting for covariates (HR: 0.97, 95%CI:0.56-1.68[p>0.9]). Conclusion Our study suggests that having a potential live donor could decrease the risk of death in patients with PSC on the waitlist. Importantly, the post-transplant outcomes in this population are similar between the LDLT and DDLT groups.
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Affiliation(s)
- Owen Jones
- Ajmera Transplant Center, University Health Network Toronto, Ontario, Canada
| | - Marco Paw Claasen
- Ajmera Transplant Center, University Health Network Toronto, Ontario, Canada
- Department of Surgery, division of HPB & Transplant Surgery, Erasmus MC Transplant Institute, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Tommy Ivanics
- Ajmera Transplant Center, University Health Network Toronto, Ontario, Canada
- Department of Surgery, Henry Ford Hospital, Detroit, Michigan, United States of America
- Department of Surgical Sciences, Akademiska Sjukhuset, Uppsala University, Uppsala, Sweden
| | - Woo Jin Choi
- Ajmera Transplant Center, University Health Network Toronto, Ontario, Canada
- Department of Surgery, University of Toronto, Ontario, Canada
| | - Felipe Gavaria
- Ajmera Transplant Center, University Health Network Toronto, Ontario, Canada
| | - Luckshi Rajendran
- Ajmera Transplant Center, University Health Network Toronto, Ontario, Canada
- Department of Surgery, University of Toronto, Ontario, Canada
| | - Anand Ghanekar
- Ajmera Transplant Center, University Health Network Toronto, Ontario, Canada
| | - Gideon Hirschfield
- Ajmera Transplant Center, University Health Network Toronto, Ontario, Canada
| | - Aliya Gulamhusein
- Ajmera Transplant Center, University Health Network Toronto, Ontario, Canada
| | - Chaya Shwaartz
- Ajmera Transplant Center, University Health Network Toronto, Ontario, Canada
| | - Trevor Reichman
- Ajmera Transplant Center, University Health Network Toronto, Ontario, Canada
| | - Blayne Amir Sayed
- Ajmera Transplant Center, University Health Network Toronto, Ontario, Canada
| | - Markus Selzner
- Ajmera Transplant Center, University Health Network Toronto, Ontario, Canada
| | - Mamatha Bhat
- Ajmera Transplant Center, University Health Network Toronto, Ontario, Canada
| | - Cynthia Tsien
- Ajmera Transplant Center, University Health Network Toronto, Ontario, Canada
| | - Elmar Jaeckel
- Ajmera Transplant Center, University Health Network Toronto, Ontario, Canada
| | - Les Lilly
- Ajmera Transplant Center, University Health Network Toronto, Ontario, Canada
| | - Ian D McGilvray
- Ajmera Transplant Center, University Health Network Toronto, Ontario, Canada
| | - Mark S Cattral
- Ajmera Transplant Center, University Health Network Toronto, Ontario, Canada
| | - Nazia Selzner
- Ajmera Transplant Center, University Health Network Toronto, Ontario, Canada
| | - Gonzalo Sapisochin
- Ajmera Transplant Center, University Health Network Toronto, Ontario, Canada
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Choi WJ, Roberts S, Verma A, Razak F, O'Kane GM, Gallinger S, Hirschfield G, Hansen B, Sapisochin G. Characterizing the burden of biliary tract cancers across 28 hospitals in Ontario, Canada. Cancer 2024. [PMID: 38361443 DOI: 10.1002/cncr.35249] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 01/22/2024] [Accepted: 01/23/2024] [Indexed: 02/17/2024]
Abstract
BACKGROUND AND AIMS The incidence of biliary tract cancers (BTC) appears to be increasing worldwide. We analyzed the characteristics of BTC-related hospitalizations under medical services across 28 hospitals in Ontario, Canada. METHODS This study uses data collected by GEMINI, a hospital research data network. BTC-related hospitalizations from 2015 to 2021 under the Department of Medicine or intensive care unit were captured using the International Classification of Diseases, 10th revision, codes for intrahepatic cholangiocarcinoma (iCCA), extrahepatic cholangiocarcinoma, and gallbladder cancers. RESULTS A total of 4596 BTC-related hospitalizations (2720 iCCA, 1269 extrahepatic cholangiocarcinoma, 607 gallbladder cancers) were analyzed. The number of unique patients with BTC-related hospitalizations increased over time. For iCCA-related hospitalizations, the total number of hospitalizations increased (from 385 in 2016 to 420 in 2021, p = .005), the hospital length of stay decreased over the study period (mean 10 days [SD, 12] in 2016 to 9 days [SD, 8] in 2021, p = .04), and the number of in-hospital deaths was stable (from 68 [18%] in 2016 to 55 [13%] in 2021, p = .62). Other outcomes such as 30-day readmissions, medical imaging tests, intensive care unit-specific hospitalizations, and length of stay were stable over time for all cohorts. The cost of hospitalization for the BTC cohort increased from median $8203 CAD (interquartile range, 5063-15,543) in 2017 to $8507 CAD (interquartile range, 5345-14,755) in 2021. CONCLUSIONS This real-world data analysis showed a rising number of patients with BTC-related hospitalizations and rising number of iCCA-related hospitalizations across 28 hospitals in Ontario between 2015 and 2021.
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Affiliation(s)
- Woo Jin Choi
- Department of Surgery, University of Toronto, Toronto, Ontario, Canada
- Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
- Li Ka Shing Knowledge Institute, St Michael's Hospital, Toronto, Ontario, Canada
| | - Surain Roberts
- Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
- Li Ka Shing Knowledge Institute, St Michael's Hospital, Toronto, Ontario, Canada
| | - Amol Verma
- Li Ka Shing Knowledge Institute, St Michael's Hospital, Toronto, Ontario, Canada
| | - Fahad Razak
- Li Ka Shing Knowledge Institute, St Michael's Hospital, Toronto, Ontario, Canada
| | - Grainne M O'Kane
- Department of Medical Oncology, Trinity St. James's Cancer Institute, Trinity College Dublin, Dublin, Ireland
| | - Steven Gallinger
- Department of Surgery, University of Toronto, Toronto, Ontario, Canada
- University Health Network, HPB Surgical Oncology, Toronto, Ontario, Canada
| | - Gideon Hirschfield
- Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada
- Toronto Centre for Liver Disease, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
| | - Bettina Hansen
- Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
- Toronto Centre for Liver Disease, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
- Department of Epidemiology & Biostatistics, Erasmus MC, Rotterdam, the Netherlands
| | - Gonzalo Sapisochin
- Department of Surgery, University of Toronto, Toronto, Ontario, Canada
- University Health Network, HPB Surgical Oncology, Toronto, Ontario, Canada
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Yang YS, Kim DH, Ha JH, Ko NY, Kim JK, Choi WJ, Song BH, Hwang SH, Sohn KM, Ahn HJ. A Split-face Study on Rejuvenation Efficacy According to Monopolar Radiofrequency Tip Size. J Clin Aesthet Dermatol 2024; 17:20-22. [PMID: 38444428 PMCID: PMC10911263] [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: 03/07/2024]
Abstract
Monopolar radiofrequency (RF) non-invasively tightens and rejuvenates the skin by stimulating collagen fiber production. Since the introduction of the monopolar RF device in the early 2000's, RF devices have advanced and they can rejuvenate of periorbital and forehead wrinkles, as well as skin laxity of the lower face and neck. We compared the differences in the treatment effects based on the tip size. This randomized split-face study comprised 31 participants aged 29 to 75 years old (three males and 28 females) who underwent one session of monopolar RF; one side of the face was treated with a 3cm2 tip and the other with a 4cm2 tip. Facial wrinkle scores were measured on the upper face and the lower face before and after treatment for up to three months. Significant improvement was observed in the periorbital area (p<0.001), forehead (p=0.72), and glabellar (p=0.63) treated with a smaller tip. However, nasolabial folds (p=0.8) and marionette lines (p=0.13) showed better improvement when treated with a larger tip.
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Affiliation(s)
- Yun Seok Yang
- Drs. Yang, Kim, Ha, Ko, Kim, Choi, Song, Hwang, and Sohn are with the Renewme Dermatologic Clinic in Seoul, South Korea
| | - Duk Han Kim
- Drs. Yang, Kim, Ha, Ko, Kim, Choi, Song, Hwang, and Sohn are with the Renewme Dermatologic Clinic in Seoul, South Korea
| | - Ji Hyun Ha
- Drs. Yang, Kim, Ha, Ko, Kim, Choi, Song, Hwang, and Sohn are with the Renewme Dermatologic Clinic in Seoul, South Korea
| | - Na Young Ko
- Drs. Yang, Kim, Ha, Ko, Kim, Choi, Song, Hwang, and Sohn are with the Renewme Dermatologic Clinic in Seoul, South Korea
| | - Joong Keun Kim
- Drs. Yang, Kim, Ha, Ko, Kim, Choi, Song, Hwang, and Sohn are with the Renewme Dermatologic Clinic in Seoul, South Korea
| | - Woo Jin Choi
- Drs. Yang, Kim, Ha, Ko, Kim, Choi, Song, Hwang, and Sohn are with the Renewme Dermatologic Clinic in Seoul, South Korea
| | - Byong Han Song
- Drs. Yang, Kim, Ha, Ko, Kim, Choi, Song, Hwang, and Sohn are with the Renewme Dermatologic Clinic in Seoul, South Korea
| | - Sang Hyeon Hwang
- Drs. Yang, Kim, Ha, Ko, Kim, Choi, Song, Hwang, and Sohn are with the Renewme Dermatologic Clinic in Seoul, South Korea
| | - Ki Min Sohn
- Drs. Yang, Kim, Ha, Ko, Kim, Choi, Song, Hwang, and Sohn are with the Renewme Dermatologic Clinic in Seoul, South Korea
| | - Hye-Jin Ahn
- Dr. Ahn is with the Department of Dermatology at Kyung Hee University College of Medicine and Kyung Hee University Hospital in Seoul, Korea
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Choi JW, Park JW, Choi WJ. Effects of hip joint kinematics on the effective pelvis stiffness and hip impact force during simulated sideways falls. J Biomech 2024; 162:111885. [PMID: 38039920 DOI: 10.1016/j.jbiomech.2023.111885] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 11/21/2023] [Accepted: 11/23/2023] [Indexed: 12/03/2023]
Abstract
Improved understanding is required on how hip fracture risk is influenced by landing configuration. We examined how hip impact dynamics was affected by hip joint kinematics during simulated sideways falls. Twelve young adults (7 males, 5 females) of mean age 23.5 (SD = 1.5) years, participated in pelvis release experiments. Trials were acquired with the hip flexed 15° and 30° for each of three hip rotations: +15° ("external rotation"), 0°, and -15° ("internal rotation"). During falls, force-deformation data of the pelvis were recorded. Outcome variables included the peak hip impact force (Fexperimental) and effective stiffness of the pelvis (k1st, ksecant, and kms) determined with different methods suggested in literature, and predicted hip impact force during a fall from standing height (F1st, Fsecant and Fms). The two-way repeated-measures ANOVA was used to test whether these variables were associated with hip joint angles. The Fexperimental, ksecant and Fsecant were associated with hip rotation (F = 5.587, p = 0.005; F = 9.278, p < 0.0005; F = 5.778, p = 0.004, respectively), and 15 %, 31 % and 17 % smaller in 15° external than internal rotation (848 versus 998 N; 24.6 versus 35.6 kN/m; 2,637 versus 3,170 N, respectively). However, none of the outcome variables were associated with hip flexion (p > 0.05). Furthermore, there were no interactions between the hip rotation and flexion for all outcome variables (p > 0.05). Our results provide insights on hip impact dynamics, which may help improve a hip model to assess hip fracture risk during a fall.
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Affiliation(s)
- J W Choi
- Injury Prevention and Biomechanics Laboratory, Department of Physical Therapy, Yonsei University, Wonju, Gangwon-do, South Korea
| | - J W Park
- Injury Prevention and Biomechanics Laboratory, Department of Physical Therapy, Yonsei University, Wonju, Gangwon-do, South Korea
| | - W J Choi
- Injury Prevention and Biomechanics Laboratory, Department of Physical Therapy, Yonsei University, Wonju, Gangwon-do, South Korea.
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Choi WJ, Babakhani S, Claasen MPAW, Castelo M, Bucur R, Gaviria F, Jones O, Shwaartz C, McCluskey SA, McGilvray I, Gallinger S, Moulton CA, Reichman T, Cleary S, Sapisochin G. Performance evaluation of a North American center using the established global benchmark for laparoscopic liver resections: A retrospective study. Surgery 2023; 174:1393-1400. [PMID: 37863687 DOI: 10.1016/j.surg.2023.09.009] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 08/07/2023] [Accepted: 09/05/2023] [Indexed: 10/22/2023]
Abstract
BACKGROUND The global benchmark cut-offs were set for laparoscopic liver resection procedures: left lateral sectionectomy, left hepatectomy, and right hepatectomy. We aimed to compare the performance of our North American center with the established global benchmarks. METHODS This is a single-center study of adults who underwent laparoscopic liver resection between 2010 to 2022 at the Toronto General Hospital. Fourteen benchmarking outcomes were assessed: operation time, intraoperative blood transfusion, estimated blood loss, blood loss ≥500 mL, blood loss ≥1000mL, open-conversion, postoperative length of stay, return to operation, postoperative morbidity, postoperative major-morbidity, 30-day mortality, 90-day mortality, R1 resection, and failure to rescue. Low-risk benchmark cases were defined as follows: patients aged 18 to 70 years, American Society of Anesthesiologist score ≤ 2, tumor size <10 cm, and Child-Pugh score ≤A. Cases involving bilio-enteric anastomosis, hilar dissection, or concomitant major procedures were excluded from the low-risk category. Cases that did not meet the criteria for low-risk selection were considered high-risk cases. RESULTS A total of 178 laparoscopic liver resection cases were analyzed (109 left lateral sectionectomies, 45 left hepatectomies, 24 right hepatectomies). Forty-four (25%) cases qualified as low-risk cases (23 left lateral sectionectomies, 16 left hepatectomies, 5 right hepatectomies). The postoperative major morbidity and 90-day mortality after left lateral sectionectomy, left hepatectomy, and right hepatectomy for the low-risk cases were 0%, 0%, and 0%, and 0%, 0%, and 0%, respectively. For the high-risk cases post-2017, the outcomes in the same order were 0%, 0%, and 12%; 0%, 0%, and 0%, respectively. For the high-risk cases operated pre2017, the outcomes in the same order were 9%∗, 16%∗, and 18%; 2%∗, 0%, and 9%∗ (asterisks indicate not meeting the global cut-off), respectively. CONCLUSION A North American center was able to achieve outcomes comparable to the established global benchmark for laparoscopic liver resection.
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Affiliation(s)
- Woo Jin Choi
- Department of Surgery, University of Toronto, Toronto, Ontario, Canada; Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada. https://twitter.com/WJChoiMD
| | - Shiva Babakhani
- University Health Network, HPB Surgical Oncology, Toronto, Ontario, Canada
| | - Marco P A W Claasen
- University Health Network, HPB Surgical Oncology, Toronto, Ontario, Canada; Department of Surgery, division of HPB & Transplant Surgery, Erasmus MC Transplant Institute, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Matthew Castelo
- Department of Surgery, University of Toronto, Toronto, Ontario, Canada; Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Roxana Bucur
- University Health Network, HPB Surgical Oncology, Toronto, Ontario, Canada
| | - Felipe Gaviria
- University Health Network, HPB Surgical Oncology, Toronto, Ontario, Canada
| | - Owen Jones
- University Health Network, HPB Surgical Oncology, Toronto, Ontario, Canada
| | - Chaya Shwaartz
- Department of Surgery, University of Toronto, Toronto, Ontario, Canada; University Health Network, HPB Surgical Oncology, Toronto, Ontario, Canada
| | - Stuart A McCluskey
- Department of Anesthesia, Toronto General Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Ian McGilvray
- Department of Surgery, University of Toronto, Toronto, Ontario, Canada; University Health Network, HPB Surgical Oncology, Toronto, Ontario, Canada
| | - Steven Gallinger
- Department of Surgery, University of Toronto, Toronto, Ontario, Canada; University Health Network, HPB Surgical Oncology, Toronto, Ontario, Canada
| | - Carol-Anne Moulton
- Department of Surgery, University of Toronto, Toronto, Ontario, Canada; University Health Network, HPB Surgical Oncology, Toronto, Ontario, Canada
| | - Trevor Reichman
- Department of Surgery, University of Toronto, Toronto, Ontario, Canada; University Health Network, HPB Surgical Oncology, Toronto, Ontario, Canada
| | - Sean Cleary
- Department of Surgery, Division of Hepatobiliary and Pancreatic Surgery, Mayo Clinic, Rochester, MN
| | - Gonzalo Sapisochin
- Department of Surgery, University of Toronto, Toronto, Ontario, Canada; University Health Network, HPB Surgical Oncology, Toronto, Ontario, Canada.
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Kim J, Choi YS, Park G, Kim M, Myung JS, Choi WJ, Park SM, Yoon DK. On-Demand Aligned DNA Hydrogel Via Light Scanning. ACS Nano 2023; 17:22778-22787. [PMID: 37947399 DOI: 10.1021/acsnano.3c07493] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
DNA is an anisotropic, water-attracting, and biocompatible material, an ideal building block for hydrogel. The alignment of the anisotropic DNA chains is essential to maximize hydrogel properties, which has been little explored. Here, we present a method to fabricate the anisotropic DNA hydrogel that allows precise control for the polymerization process of photoreactive cationic monomers. Scanning ultraviolet light enables the uniaxial alignment of DNA chains through the polymerization-induced diffusive mass flow using a concentration gradient. While studying anisotropic mechanical properties and orientation recovery according to the DNA chain alignment direction, we demonstrate the potential of directionally controlled DNA hydrogels as smart materials.
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Affiliation(s)
- Juri Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - Yun-Seok Choi
- Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos 87545, New Mexico, USA
| | - Geonhyeong Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - Mingeun Kim
- Chemical Materials Solutions Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Jin Suk Myung
- Chemical Materials Solutions Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Woo Jin Choi
- Chemical Materials Solutions Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Soon Mo Park
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Department of Chemical and Biomolecular Engineering, Cornell University, Ithaca 14853, New York, USA
| | - Dong Ki Yoon
- Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
- Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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Rajendran L, Choi WJ, Sapisochin G. Response to "Letter to the Editor: Does Viral Hepatitis Status Relate to Hepatocellular Carcinoma After Liver Resection?". Ann Surg Oncol 2023; 30:5455-5456. [PMID: 37310538 DOI: 10.1245/s10434-023-13732-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 05/30/2023] [Indexed: 06/14/2023]
Affiliation(s)
- Luckshi Rajendran
- Division of General Surgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Woo Jin Choi
- Division of General Surgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
- Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - Gonzalo Sapisochin
- Division of General Surgery, Department of Surgery, University of Toronto, Toronto, ON, Canada.
- Multi-Organ Transplant Program, University Health Network, Toronto, ON, Canada.
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Choi WJ, Walker R, Rajendran L, Jones O, Gravely A, Englesakis M, Gallinger S, Hirschfield G, Hansen B, Sapisochin G. Call to Improve the Quality of Prediction Tools for Intrahepatic Cholangiocarcinoma Resection: A Critical Appraisal, Systematic Review, and External Validation Study. Ann Surg Open 2023; 4:e328. [PMID: 37746604 PMCID: PMC10513309 DOI: 10.1097/as9.0000000000000328] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 07/24/2023] [Indexed: 09/26/2023] Open
Abstract
Objective To conduct a systematic review, critical appraisal, and external validation of survival prediction tools for patients undergoing intrahepatic cholangiocarcinoma (iCCA) resection. Summary background data Despite the development of several survival prediction tools in recent years for patients undergoing iCCA resections, there is a lack of critical appraisal and external validation of these models. Methods We conducted a systematic review and critical appraisal of survival and recurrence prediction models for patients undergoing curative-intent iCCA resections. Studies were evaluated based on their model design, risk of bias, reporting, performance, and validation results. We identified the best model and externally validated it using our institution's data. Results This review included a total of 31 studies, consisting of 26 studies with original prediction tools and 5 studies that only conducted external validations. Among the 26, 54% of the studies conducted internal validations, 46% conducted external validations, and only 1 study scored a low risk of bias. Harrell's C-statistics ranged from 0.67 to 0.76 for internal validation and from 0.64 to 0.75 for external validation. Only 81% of the studies reported model calibration. Our external validation of the best model (Intrahepatic Cholangiocarcinoma [ICC]-Metroticket) estimated Harrell's and Uno's C-statistics of 0.67 (95% CI: 0.56-0.77) and Uno's time-dependent area under the receiver operating characteristic curve (AUC) of 0.71 (95% CI: 0.53-0.88), with a Brier score of 0.20 (95% CI: 0.15-0.26) and good calibration plots. Conclusions Many prediction models have been published in recent years, but their quality remains poor, and minimal methodological quality improvement has been observed. The ICC-Metroticket was selected as the best model (Uno's time-dependent AUC of 0.71) for 5-year overall survival prediction in patients undergoing curative-intent iCCA resection.
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Affiliation(s)
- Woo Jin Choi
- From the Department of Surgery, University of Toronto, Toronto, Ontario, Canada
- Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Richard Walker
- From the Department of Surgery, University of Toronto, Toronto, Ontario, Canada
- Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Luckshi Rajendran
- From the Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Owen Jones
- University Health Network, HPB Surgical Oncology, Toronto, Ontario, Canada
| | - Annie Gravely
- University Health Network, HPB Surgical Oncology, Toronto, Ontario, Canada
| | - Marina Englesakis
- Library and Information Services, University Health Network, Toronto, Canada
| | - Steven Gallinger
- From the Department of Surgery, University of Toronto, Toronto, Ontario, Canada
- University Health Network, HPB Surgical Oncology, Toronto, Ontario, Canada
| | - Gideon Hirschfield
- Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada
- Toronto Centre for Liver Disease, Toronto General Hospital, University Health Network, Toronto, Canada
| | - Bettina Hansen
- Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
- Toronto Centre for Liver Disease, Toronto General Hospital, University Health Network, Toronto, Canada
- Department of Epidemiology & Biostatistics, Erasmus MC, Rotterdam, the Netherlands
| | - Gonzalo Sapisochin
- From the Department of Surgery, University of Toronto, Toronto, Ontario, Canada
- Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
- University Health Network, HPB Surgical Oncology, Toronto, Ontario, Canada
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10
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Choi WJ, Ivanics T, Gravely A, Gallinger S, Sapisochin G, O'Kane GM. ASO Visual Abstract: Optimizing Circulating Tumor DNA Use in the Perioperative Setting for Intrahepatic Cholangiocarcinoma-Diagnosis, Screening, Minimal Residual Disease Detection, and Treatment Response Monitoring. Ann Surg Oncol 2023; 30:3866-3867. [PMID: 36847955 DOI: 10.1245/s10434-023-13184-1] [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] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Affiliation(s)
- Woo Jin Choi
- Department of Surgery, University of Toronto, Toronto, ON, Canada
- Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
- Division of General Surgery, University of Toronto Staff Surgeon, HBP and Multi Organ Transplant Program, University Health Network, Toronto, ON, Canada
| | - Tommy Ivanics
- Department of Surgery, Henry Ford Hospital, Detroit, MI, USA
- Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Annabel Gravely
- Division of General Surgery, University of Toronto Staff Surgeon, HBP and Multi Organ Transplant Program, University Health Network, Toronto, ON, Canada
| | - Steven Gallinger
- Department of Surgery, University of Toronto, Toronto, ON, Canada
- Division of General Surgery, University of Toronto Staff Surgeon, HBP and Multi Organ Transplant Program, University Health Network, Toronto, ON, Canada
| | - Gonzalo Sapisochin
- Department of Surgery, University of Toronto, Toronto, ON, Canada.
- Division of General Surgery, University of Toronto Staff Surgeon, HBP and Multi Organ Transplant Program, University Health Network, Toronto, ON, Canada.
| | - Grainne M O'Kane
- Department of Medical Oncology, Trinity St. James's Cancer Institute, Trinity College Dublin, St. James's Hospital, Dublin, Ireland.
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11
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Rajendran L, Choi WJ, Muaddi H, Ivanics T, Feld JJ, Claasen MPAW, Castelo M, Sapisochin G. Association of Viral Hepatitis Status and Post-hepatectomy Outcomes in the Era of Direct-Acting Antivirals. Ann Surg Oncol 2023; 30:2793-2802. [PMID: 36515750 DOI: 10.1245/s10434-022-12937-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 11/21/2022] [Indexed: 12/15/2022]
Abstract
BACKGROUND The role of viral hepatitis status in post-hepatectomy outcomes has yet to be delineated. This large, multicentred contemporary study aimed to evaluate the effect of viral hepatitis status on 30-day post-hepatectomy complications in patients treated for hepatocellular carcinoma (HCC). METHODS Patients from the National Surgical Quality Improvement Program (NSQIP) database with known viral hepatitis status, who underwent hepatectomy for HCC between 2014 and 2018, were included. Patients were classified as HBV-only, HCV-only, HBV and HCV co-infection (HBV/HCV), or no viral hepatitis (NV). Multivariable models were used to assess outcomes of interest. The primary outcome was any 30-day post-hepatectomy complication. The secondary outcomes were major complications and post-hepatectomy liver failure (PHLF). Subgroup analyses were performed for cirrhotic and noncirrhotic patients. RESULTS A total of 3234 patients were included. The 30-day complication rate was 207/663 (31.2%) HBV, 356/1077 (33.1%) HCV, 29/81 (35.8%) HBV/HCV, and 534/1413 (37.8%) NV (p = 0.01). On adjusted analysis, viral hepatitis status was not associated with occurrence of any 30-day post-hepatectomy complications (ref: NV, HBV odds ratio (OR) 0.89 [95% confidence interval (CI): 0.71-1.12]; HCV OR 0.91 [95% CI: 0.75-1.10]; HBV/HCV OR 1.17 [95% CI: 0.71-1.93]). Similar results were found in cirrhotic and noncirrhotic subgroups, and for secondary outcomes: occurrence of any major complications and PHLF. CONCLUSIONS In patients with HCC managed with resection, viral hepatitis status is not associated with 30-day post-hepatectomy complications, major complications, or PHLF compared with NV. This suggests that clinical decisions and prognostication of 30-day outcomes in this population likely should not be made based on viral hepatitis status.
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Affiliation(s)
- Luckshi Rajendran
- Department of Surgery, Division of General Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Woo Jin Choi
- Department of Surgery, Division of General Surgery, University of Toronto, Toronto, Ontario, Canada
- Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Hala Muaddi
- Department of Surgery, Division of General Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Tommy Ivanics
- Multi-Organ Transplant Program, University Health Network, Toronto, Ontario, Canada
- Department of Surgery, Henry Ford Hospital, Detroit, Michigan, USA
- Department of Surgical Sciences, Akademiska Sjukhuset, Uppsala University, Uppsala, Sweden
| | - Jordan J Feld
- Toronto Centre for Liver Disease, University Health Network, Toronto, Ontario, Canada
| | - Marco P A W Claasen
- Multi-Organ Transplant Program, University Health Network, Toronto, Ontario, Canada
- Department of Surgery, Division of HPB and Transplant Surgery, Erasmus MC Transplant Institute, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Matthew Castelo
- Department of Surgery, Division of General Surgery, University of Toronto, Toronto, Ontario, Canada
- Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Gonzalo Sapisochin
- Department of Surgery, Division of General Surgery, University of Toronto, Toronto, Ontario, Canada.
- Multi-Organ Transplant Program, University Health Network, Toronto, Ontario, Canada.
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12
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Rajendran L, Choi WJ, Muaddi H, Ivanics T, Feld JJ, Claasen MPAW, Castelo M, Sapisochin G. ASO Visual Abstract: The Association of Viral Hepatitis Status and Post-hepatectomy Outcomes in the Era of Direct-Acting Antivirals. Ann Surg Oncol 2023; 30:2805-2806. [PMID: 36859703 DOI: 10.1245/s10434-023-13145-8] [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] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Affiliation(s)
- Luckshi Rajendran
- Department of Surgery, Division of General Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Woo Jin Choi
- Department of Surgery, Division of General Surgery, University of Toronto, Toronto, Ontario, Canada
- Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - Hala Muaddi
- Department of Surgery, Division of General Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Tommy Ivanics
- Multi-Organ Transplant Program, University Health Network, Toronto, ON, Canada
- Department of Surgery, Henry Ford Hospital, Detroit, MI, USA
- Department of Surgical Sciences, Uppsala University, Akademiska Sjukhuset, Uppsala, Sweden
| | - Jordan J Feld
- Toronto Centre for Liver Disease, University Health Network, University of Toronto, Toronto, ON, Canada
| | - Marco P A W Claasen
- Multi-Organ Transplant Program, University Health Network, Toronto, ON, Canada
- Department of Surgery, Division of HPB and Transplant Surgery, Erasmus MC Transplant Institute, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Matthew Castelo
- Department of Surgery, Division of General Surgery, University of Toronto, Toronto, Ontario, Canada
- Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - Gonzalo Sapisochin
- Department of Surgery, Division of General Surgery, University of Toronto, Toronto, Ontario, Canada.
- Multi-Organ Transplant Program, University Health Network, Toronto, ON, Canada.
- Abdominal Transplant and HPB Surgical Oncology, University of Toronto, Toronto, ON, Canada.
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13
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Chu RJ, Kim Y, Woo SW, Choi WJ, Jung D. Punctuated growth of InAs quantum dashes-in-a-well for enhanced 2-μm emission. Nanoscale Res Lett 2023; 18:31. [PMID: 36872401 DOI: 10.1186/s11671-023-03810-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 02/21/2023] [Indexed: 05/24/2023]
Abstract
InAs quantum dashes (Qdash) engineered to emit near 2 μm are envisioned to be promising quantum emitters for next-generation technologies in sensing and communications. In this study, we explore the effect of punctuated growth (PG) on the structure and optical properties of InP-based InAs Qdashes emitting near the 2-μm wavelength. Morphological analysis revealed that PG led to an improvement in in-plane size uniformity and increases in average height and height distribution. A 2 × boost in photoluminescence intensity was observed, which we attribute to improved lateral dimensions and structural stabilization. PG encouraged formation of taller Qdashes while photoluminescence measurements revealed a blue-shift in the peak wavelength. We proposed that the blue-shift originates from the thinner quantum well cap and decreased distance between the Qdash and InAlGaAs barrier. This study on the punctuated growth of large InAs Qdashes is a step toward realizing bright, tunable, and broadband sources for 2-μm communications, spectroscopy, and sensing.
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Affiliation(s)
- R J Chu
- Center for Opto-Electronic Materials and Devices, Korea Institute of Science and Technology, Seoul, 02792, South Korea
- Division of Nanoscience and Technology, University of Science and Technology, Seoul, 02792, South Korea
| | - Y Kim
- Center for Opto-Electronic Materials and Devices, Korea Institute of Science and Technology, Seoul, 02792, South Korea
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, South Korea
| | - S W Woo
- Center for Opto-Electronic Materials and Devices, Korea Institute of Science and Technology, Seoul, 02792, South Korea
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul, 08826, South Korea
| | - W J Choi
- Center for Opto-Electronic Materials and Devices, Korea Institute of Science and Technology, Seoul, 02792, South Korea
| | - D Jung
- Center for Opto-Electronic Materials and Devices, Korea Institute of Science and Technology, Seoul, 02792, South Korea.
- Division of Nanoscience and Technology, University of Science and Technology, Seoul, 02792, South Korea.
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14
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Hong WK, Jang HS, Yoon J, Choi WJ. Modulation of Switching Characteristics in a Single VO 2 Nanobeam with Interfacial Strain via the Interconnection of Multiple Nanoscale Channels. ACS Appl Mater Interfaces 2023; 15:11296-11303. [PMID: 36787543 DOI: 10.1021/acsami.2c21367] [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] [Indexed: 06/18/2023]
Abstract
We demonstrate the modulation of electrical switching properties through the interconnection of multiple nanoscale channels (∼600 nm) in a single VO2 nanobeam with a coexisting metal-insulator (M-I) domain configuration during phase transition. The Raman scattering characteristics of the synthesized VO2 nanobeams provide evidence that substrate-induced interfacial strain can be inhomogeneously distributed along the length of the nanobeam. Interestingly, the nanoscale VO2 devices with the same channel length and width exhibit distinct differences in hysteric current-voltage characteristics, which are explained by theoretical calculations of resistance change combined with Joule heating simulations of the nanoscale VO2 channels. The observed results can be attributed to the difference in the spatial distribution and fraction ratios of M-I domains due to interfacial strain in the nanoscale VO2 channels during the metal-insulator transition process. Moreover, we demonstrate the electrically activated resistive switching characteristics based on the hysteresis behaviors of the interconnected nanoscale channels, implying the possibility of manipulating multiple resistive states. Our results may offer insights into the nanoscale engineering of correlated phases in VO2 as the key materials of neuromorphic computing for which nonlinear conductance is essential.
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Affiliation(s)
- Woong-Ki Hong
- Center for Scientific Instrumentation, Korea Basic Science Institute, Daejeon 34133, Republic of Korea
| | - Hun Soo Jang
- Chemical Materials Solutions Center, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea
| | - Jongwon Yoon
- Department of Energy & Electronic Materials, Surface & Nano Materials Division, Korea Institute of Materials Science, Changwon-si, Gyeongsangnam-do 51508, Republic of Korea
| | - Woo Jin Choi
- Chemical Materials Solutions Center, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea
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15
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Choi WJ, Sapisochin G. Pushing the limits for the surgical treatment of intrahepatic cholangiocarcinoma. Hepatobiliary Surg Nutr 2023; 12:99-104. [PMID: 36860246 PMCID: PMC9944536 DOI: 10.21037/hbsn-22-555] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 12/19/2022] [Indexed: 01/11/2023]
Affiliation(s)
- Woo Jin Choi
- Department of Surgery, University of Toronto, Toronto, ON, Canada;,Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada;,University Health Network, HPB Surgical Oncology, Toronto, ON, Canada
| | - Gonzalo Sapisochin
- Department of Surgery, University of Toronto, Toronto, ON, Canada;,University Health Network, HPB Surgical Oncology, Toronto, ON, Canada
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16
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Choi WJ, Perez FM, Gravely A, Ivanics T, Claasen MPAW, Abraham L, Abreu P, Visser R, Gallinger S, Hansen BE, Sapisochin G. Preoperative neutrophil-to-lymphocyte ratio is prognostic for early recurrence after curative intrahepatic cholangiocarcinoma resection. Ann Hepatobiliary Pancreat Surg 2023; 27:158-165. [PMID: 36804209 DOI: 10.14701/ahbps.22-114] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/16/2022] [Accepted: 12/27/2022] [Indexed: 02/22/2023] Open
Abstract
Backgrounds/Aims Within two years of surgery, 70% of resected intrahepatic cholangiocarcinoma (iCCA) recur. Better biomarkers are needed to identify those at risk of "early recurrence" (ER). In this study, we defined ER and investigated whether preoperative neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), and systemic-inflammatory index were prognostic of both overall relapse and ER after curative hepatectomy for iCCA. Methods A retrospective cohort of patients who underwent curative-intent hepatectomy for iCCA between 2005 and 2017 were created. The cut-off timepoint for the ER of iCCA was estimated using a piecewise linear regression model. Univariable analyses of recurrence were conducted for the overall, early, and late recurrence periods. For the early and late recurrence periods, multivariable Cox regression with time-varying regression coefficient analysis was used. Results A total of 113 patients were included in this study. ER was defined as recurrence within 12 months of a curative resection. Among the included patients, 38.1% experienced ER. In the univariable model, a higher preoperative NLR (> 4.3) was significantly associated with an increased risk of recurrence overall and in the first 12 months after curative surgery. In the multivariable model, a higher NLR was associated with a higher recurrence rate overall and in the ER period (≤ 12 months), but not in the late recurrence period. Conclusions Preoperative NLR was prognostic of both overall recurrence and ER after curative iCCA resection. NLR is easily obtained before and after surgery and should be integrated into ER prediction tools to guide preoperative treatments and intensify postoperative follow-up.
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Affiliation(s)
- Woo Jin Choi
- Department of Surgery, University of Toronto, Toronto, ON, Canada.,HPB Surgical Oncology, University Health Network, Toronto, ON, Canada.,Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | | | - Annabel Gravely
- Toronto Center for Liver Disease, University Health Network, Toronto, ON, Canada
| | - Tommy Ivanics
- HPB Surgical Oncology, University Health Network, Toronto, ON, Canada.,Department of Surgery, Henry Ford Hospital, Detroit, MI, United States.,Department of Surgical Sciences, Akademiska Sjukhuset, Uppsala University, Uppsala, Sweden
| | - Marco P A W Claasen
- HPB Surgical Oncology, University Health Network, Toronto, ON, Canada.,Division of HPB & Transplant Surgery, Department of Surgery, Erasmus MC Transplant Institute, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Liza Abraham
- Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Phillipe Abreu
- HPB Surgical Oncology, University Health Network, Toronto, ON, Canada
| | - Robin Visser
- HPB Surgical Oncology, University Health Network, Toronto, ON, Canada
| | - Steven Gallinger
- Department of Surgery, University of Toronto, Toronto, ON, Canada.,HPB Surgical Oncology, University Health Network, Toronto, ON, Canada
| | - Bettina E Hansen
- Toronto Center for Liver Disease, University Health Network, Toronto, ON, Canada.,Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - Gonzalo Sapisochin
- Department of Surgery, University of Toronto, Toronto, ON, Canada.,HPB Surgical Oncology, University Health Network, Toronto, ON, Canada
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17
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Choi WJ, Ivanics T, Gravely A, Gallinger S, Sapisochin G, O'Kane GM. Optimizing Circulating Tumour DNA Use in the Perioperative Setting for Intrahepatic Cholangiocarcinoma: Diagnosis, Screening, Minimal Residual Disease Detection and Treatment Response Monitoring. Ann Surg Oncol 2023; 30:3849-3863. [PMID: 36808320 DOI: 10.1245/s10434-023-13126-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 01/09/2023] [Indexed: 02/23/2023]
Abstract
In this review, we present the current evidence and future perspectives on the use of circulating tumour DNA (ctDNA) in the diagnosis, management and understanding the prognosis of patients with intrahepatic cholangiocarcinoma (iCCA) undergoing surgery. Liquid biopsies or ctDNA maybe utilized to: (1) determine the molecular profile of the tumour and therefore guide the selection of molecular targeted therapy in the neoadjuvant setting, (2) form a surveillance tool for the detection of minimal residual disease or cancer recurrence after surgery, and (3) diagnose and screen for early iCCA detection in high-risk populations. The potential for ctDNA can be tumour-informed or -uninformed depending on the goals of its use. Future studies will require ctDNA extraction technique validations, with standardizations of both the platforms and the timing of ctDNA collections.
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Affiliation(s)
- Woo Jin Choi
- HBP and Multi Organ Transplant Program, Division of General Surgery, Department of Surgery, University Health Network, University of Toronto, Toronto, Ontario, Canada.,Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada.,HPB Surgical Oncology, University Health Network, Toronto, Ontario, Canada
| | - Tommy Ivanics
- Department of Surgery, Henry Ford Hospital, Detroit, MI, USA.,Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Annabel Gravely
- HPB Surgical Oncology, University Health Network, Toronto, Ontario, Canada
| | - Steven Gallinger
- HBP and Multi Organ Transplant Program, Division of General Surgery, Department of Surgery, University Health Network, University of Toronto, Toronto, Ontario, Canada.,HPB Surgical Oncology, University Health Network, Toronto, Ontario, Canada
| | - Gonzalo Sapisochin
- HBP and Multi Organ Transplant Program, Division of General Surgery, Department of Surgery, University Health Network, University of Toronto, Toronto, Ontario, Canada. .,HPB Surgical Oncology, University Health Network, Toronto, Ontario, Canada.
| | - Grainne M O'Kane
- Department of Medical Oncology, Trinity St. James's Cancer Institute, Trinity College Dublin, Dublin, Ireland.
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Choi WJ, Sapisochin G, O'Kane GM. ASO Author Reflections: Incorporating Circulating Tumor DNA in Perioperative Management of Intrahepatic Cholangiocarcinoma. Ann Surg Oncol 2023; 30:3864-3865. [PMID: 36752965 DOI: 10.1245/s10434-023-13211-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 01/25/2023] [Indexed: 02/09/2023]
Affiliation(s)
- Woo Jin Choi
- Department of Surgery, University of Toronto, Toronto, Ontario, Canada.,Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada.,HPB Surgical Oncology and Multi Organ Transplant Program, Division of General Surgery, University Health Network, 585 University Avenue, 9-MaRS-9047B, Toronto, ON, M5G 2N2, Canada
| | - Gonzalo Sapisochin
- Department of Surgery, University of Toronto, Toronto, Ontario, Canada. .,HPB Surgical Oncology and Multi Organ Transplant Program, Division of General Surgery, University Health Network, 585 University Avenue, 9-MaRS-9047B, Toronto, ON, M5G 2N2, Canada.
| | - Grainne M O'Kane
- Department of Medical Oncology, Trinity St. James's Cancer Institute, Trinity College Dublin, St James's Hospital, Dublin 8, D08 W9RT, Ireland.
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Choi K, Lee J, Choi WJ, Myung JS. Dynamics of semi‐flexible and breakable fibers under Poiseuille flow. POLYM ENG SCI 2023. [DOI: 10.1002/pen.26263] [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] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Kisuk Choi
- Chemical Materials Solutions Center Korea Research Institute of Chemical Technology Daejeon Republic of Korea
| | - Jaebin Lee
- Chemical Materials Solutions Center Korea Research Institute of Chemical Technology Daejeon Republic of Korea
- Korea Packaging Center Korea Institute of Industrial Technology Bucheon Republic of Korea
| | - Woo Jin Choi
- Chemical Materials Solutions Center Korea Research Institute of Chemical Technology Daejeon Republic of Korea
| | - Jin Suk Myung
- Chemical Materials Solutions Center Korea Research Institute of Chemical Technology Daejeon Republic of Korea
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20
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Ivanics T, So D, Claasen MPAW, Wallace D, Patel MS, Gravely A, Choi WJ, Shwaartz C, Walker K, Erdman L, Sapisochin G. Machine learning-based mortality prediction models using national liver transplantation registries are feasible but have limited utility across countries. Am J Transplant 2023; 23:64-71. [PMID: 36695623 DOI: 10.1016/j.ajt.2022.12.002] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 10/04/2022] [Accepted: 10/14/2022] [Indexed: 01/13/2023]
Abstract
Many countries curate national registries of liver transplant (LT) data. These registries are often used to generate predictive models; however, potential performance and transferability of these models remain unclear. We used data from 3 national registries and developed machine learning algorithm (MLA)-based models to predict 90-day post-LT mortality within and across countries. Predictive performance and external validity of each model were assessed. Prospectively collected data of adult patients (aged ≥18 years) who underwent primary LTs between January 2008 and December 2018 from the Canadian Organ Replacement Registry (Canada), National Health Service Blood and Transplantation (United Kingdom), and United Network for Organ Sharing (United States) were used to develop MLA models to predict 90-day post-LT mortality. Models were developed using each registry individually (based on variables inherent to the individual databases) and using all 3 registries combined (variables in common between the registries [harmonized]). The model performance was evaluated using area under the receiver operating characteristic (AUROC) curve. The number of patients included was as follows: Canada, n = 1214; the United Kingdom, n = 5287; and the United States, n = 59,558. The best performing MLA-based model was ridge regression across both individual registries and harmonized data sets. Model performance diminished from individualized to the harmonized registries, especially in Canada (individualized ridge: AUROC, 0.74; range, 0.73-0.74; harmonized: AUROC, 0.68; range, 0.50-0.73) and US (individualized ridge: AUROC, 0.71; range, 0.70-0.71; harmonized: AUROC, 0.66; range, 0.66-0.66) data sets. External model performance across countries was poor overall. MLA-based models yield a fair discriminatory potential when used within individual databases. However, the external validity of these models is poor when applied across countries. Standardization of registry-based variables could facilitate the added value of MLA-based models in informing decision making in future LTs.
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Affiliation(s)
- Tommy Ivanics
- Multi-Organ Transplant Program, University Health Network Toronto, Ontario, Canada; Department of Surgery, Henry Ford Hospital, Detroit, Michigan, USA; Department of Surgical Sciences, Akademiska Sjukhuset, Uppsala University, Uppsala, Sweden
| | - Delvin So
- The Centre of Computational Medicine, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Marco P A W Claasen
- Multi-Organ Transplant Program, University Health Network Toronto, Ontario, Canada; Department of Surgery, division of HPB & Transplant Surgery, Erasmus MC Transplant Institute, University Medical Centre Rotterdam, Rotterdam, Netherlands
| | - David Wallace
- Department of Health Services Research and Policy, London School of Hygiene and Tropical Medicine and Institute of Liver Studies, King's College Hospital NHS Foundation Trust, London, UK
| | - Madhukar S Patel
- Division of Surgical Transplantation, Department of Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Annabel Gravely
- Multi-Organ Transplant Program, University Health Network Toronto, Ontario, Canada
| | - Woo Jin Choi
- Multi-Organ Transplant Program, University Health Network Toronto, Ontario, Canada
| | - Chaya Shwaartz
- Multi-Organ Transplant Program, University Health Network Toronto, Ontario, Canada
| | - Kate Walker
- Department of Nephrology and Transplantation, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Lauren Erdman
- The Centre of Computational Medicine, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Gonzalo Sapisochin
- Multi-Organ Transplant Program, University Health Network Toronto, Ontario, Canada.
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Rajendran L, Choi WJ, Sapisochin G. ASO Author Reflections: Viral Hepatitis on Post-Hepatectomy Outcomes in the Direct-Acting Antivirals Era. Ann Surg Oncol 2022; 30:2803-2804. [PMID: 36525206 DOI: 10.1245/s10434-022-12966-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 12/06/2022] [Indexed: 12/23/2022]
Affiliation(s)
- Luckshi Rajendran
- Division of General Surgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Woo Jin Choi
- Division of General Surgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
- Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - Gonzalo Sapisochin
- Division of General Surgery, Department of Surgery, University of Toronto, Toronto, ON, Canada.
- Multi-Organ Transplant Program, University Health Network Toronto, Toronto, ON, Canada.
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Claasen M, Ivanics T, Gilbert R, Englesakis M, Gallinger S, Hansen B, Sapisochin G, Ivanics T, Claasen M, Gallinger S, Hansen B, Sapisochin G, Lenet T, Morin G, Abou-Khalil J, Balaa F, Martel G, Brind’Amour A, Bertens K, Balaa F, Bertens K, Martel G, Abou-Khalil J, Collin Y, Auer RC, Ivanics T, Toso C, Adam R, Ijzermans J, Sapisochin G, Polak W, Léveillé M, Lawson C, Collin Y, Tai LH, Phang T, Greene B, Jayaraman S, Tsang M, Al-Arnawoot A, Rajendran L, Lamb T, Turner A, Reid M, Rekman J, Mimeault R, Hopkins J, Abou-Khalil J, Bertens K, Martel G, Balaa F, Zhang C, Lemke M, Glinka J, Leslie K, Skaro A, Tang E, Hopkins J, Greene B, Tsang M, Jayaraman S, Bubis L, Jayaraman S, Tsang ME, Ganescu O, Vanounou T, Pelletier JS, Greene B, Levin Y, Tsang M, Jayaraman S, Ganescu O, Pelletier JS, Vanounou T, Choi WJ, Muaddi H, Ivanics T, Classen MP, Sapisochin G, Alam A, Caminsky N, Mansouri S, Lagace P, Lagace P, El-Kefraoui C, Mainprize M, Melland-Smith M, Verhoeff K, Verhoeff K, Nasser K, 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Fichtinger G, Nicol CJ, Rudan JF, Brennan K, Caycedo-Marulanda A, Merchant S, McClintock C, Patel SV, McClintock C, Bankhead C, Merchant S, Caycedo-Marulanda A, Booth C, Heneghan C, Zhang L, Huo B, Donaldson A, Flemming J, Nanji S, Caycedo-Marulanda A, Merchant S, Brogly S, Patel S, Lenet T, Park L, Murthy S, Musselman R, McKechnie T, Lee J, Biro J, Lee Y, Park L, Doumouras A, Hong D, Eskicioglu C, Singh H, Helewa R, Reynolds K, Sibley K, Doupe M, Brennan K, Flemming J, Nanji S, Merchant S, Djerboua M, Caycedo-Marulanda A, Patel S, Johnson G, Hochman D, Helewa R, Garfinkle R, Dell’Aniello S, Zelkowitz P, Vasilevsky CA, Brassard P, Boutros M, Zoughlami A, Abibula W, Amar A, Ghitulescu G, Vasilevsky CA, Brassard P, Boutros M, Araji T, Pang A, Vasilevsky CA, Boutros M, Ehlebracht A, Faria J, Ghitulescu G, Morin N, Pang A, Vasilevsky CA, Boutros M, Robitaille S, Oliver M, Charlebois P, Stein B, Liberman S, Feldman LS, Lee L, Kennedy E, Victor C, Govindarajan A, Zhang L, Brennan K, Djerboua M, Nanji S, Merchant SJ, Caycedo-Marulanda A, Flemming J, Robitaille S, Penta R, Pook M, Fiore JF, Feldman L, Lee L, Wong-Chong N, Marinescu D, Bhatnagar S, Morin N, Ghitulescu G, Vasilevsky CA, Faria J, Boutros M, Arif A, Ladua G, Bhang E, Brown C, Donellan F, Stuart H, Loree J, Patel S, Zhang L, MacDonald PH, Merchant S, Barnett KW, Caycedo-Marulanda A, Brown C, Karimuddin A, Stuart H, Ghuman A, Phang T, Raval M, Yoon HM, Fragoso G, Oliero M, Calvé A, Rendos HV, Gonzalez E, Brereton NJ, Cuisiniere T, Gerkins C, Djediai S, Annabi B, Diop K, Routy B, Laplante P, Cailhier JF, Taleb N, Alratrout H, Dagbert F, Loungnarath R, Sebajang H, Schwenter F, Wassef R, Ratelle R, Debroux E, Richard C, Santos MM, Hamad D, Alsulaim H, Monton O, Marinescu D, Pang A, Vasilevsky CA, Boutros M, Marinescu D, Alqahtani M, Pang A, Ghitulescu G, Vasilevsky CA, Boutros M, Marinescu D, Garfinkle R, Boutros M, Zwiep T, Greenberg J, Lenet T, Musselman R, Williams L, Raiche I, McIsaac D, Thavorn K, Fergusson D, Moloo H, Charbonneau J, Paré X, Frigault J, Letarte F, Ott M, Karanicolas P, Brackstone M, Ashmalla S, Weaver J, Tagalakis V, Boutros M, Stotland P, Caycedo-Marulanda A, Moloo H, Jayaraman S. 2022 Canadian Surgery Forum Sept. 15–17, 202201. Operative classification of ventral abdominal hernias: new and practical classification02. Watchful waiting for large primary splenic cysts03. Transversus abdominis plane (TAP) blocks with and without dexamethasone in colorectal surgery04. What factors determine publication of resident research day projects?05. Characterization of near-infrared imaging and indocyanine green use amongst general surgeons06. Variation in opioid prescribing after outpatient breast surgery: Time for a streamlined approach?07. Trends in graduate degree types and research output for Canadian academic general surgeons08. Would you prefer to undergo breast-conserving therapy or a mastectomy for early breast cancer? Comparison of perceptions of general and plastic surgeons09. Lack of representation of women and BIPOC individuals in Canadian academic surgery10. Medical student interest and perspectives on pursuing surgical careers: a multicentre survey evaluating 5-year trends11. Difficult cholecystectomy with cholecystogastric fistula12. Surviving nonsurvivable injuries: patients who elude the “lethal” Abbreviated Injury Scale (AIS) score of six13. Gunshot wounds sustained during legal intervention v. those inflicted by civilians: a comparative analysis14. The impact of delayed time to first head CT on functional outcomes after blunt head trauma with moderately depressed GCS15. Contemporary utility of diagnostic peritoneal aspiration in trauma16. Impact of delayed time to first head CT in traumatic brain injury17. Radiologic predictors of in-hospital mortality after traumatic craniocervical dissociation18. Measurement properties of a patient-reported instrument to evaluate functional status after major surgery19. The safety of venous thromboembolism chemoprophylaxis use in endoscopic retrograde cholangiopancreatography20. Characterizing Canadian rural surgeons: trends over time and 10-year replacement needs21. Contextual interference for skills development and transfer in laparoscopic surgery: a randomized controlled trial22. Evaluating the accuracy and design of visual backgrounds in academic surgical journals23. Defining rural surgery in Canada24. Validity of video-based general and procedure-specific self-assessment tools for surgical trainees in laparoscopic cholecystectomy25. Examining the equity and diversity characteristics of academic general surgeons in Canada26. Video-based coaching for surgical residents: a systematic review and meta-analysis27. Very-low-energy diets prior to nonbariatric surgery: a systematic review and meta-analysis28. Factors associated with resident research success: a descriptive analysis of Canadian general surgery trainees29. Global surgery pilot curriculum in Canadian undergraduate medical education: a novel approach30. How useful is ultrasound in predicting surgical findings of “mild cholecystitis”?31. Implementing a colorectal surgery “virtual hospital”: description of a novel outpatient care pathway to advance surgical care32. Trends in training and workforce planning for Canadian pediatric surgeons: a 10-year model33. Patient perspectives on intraoperative blood transfusion: results of semistructured interviews with perioperative patients34. Understanding intraoperative transfusion decision-making variability: a qualitative study using the Theoretical Domains Framework35. Effectiveness of preoperative oscillating positive expiratory pressure (OPEP) therapy in reduction of postoperative respiratory morbidity in patients undergoing surgery: a systematic review37. Accuracy of point-of-care testing devices for hemoglobin in the operating room: a systematic review and meta-analysis38. Opioid-free analgesia after outpatient general surgery: a qualitative study focused on the perspectives of patients and clinicians involved in a pilot trial39. The impact of the COVID-19 pandemic on general surgery residency: an analysis of operative volumes by residents at a Canadian general surgery residency program40. Postoperative care protocols for elderly emergency surgical patients: a quality improvement initiative42. Adverse events following robotic compared to laparoscopic and open surgery: a population-based analysis43. Is accrual higher for patients randomized to pragmatic v. exploratory randomized clinical trials? A systematic review and meta-analysis44. Effect of preoperative proton-pump inhibitor use on postoperative infectious and renal complications after elective general surgery45. The early burden of COVID-19 in emergency general surgery care across Canada46. Laparoscopic subtotal cholecystectomy for the difficult gallbladder: evolution of technique at a single teaching hospital and retrospective review47. The demand for emergency general surgery in Canada: a public health crisis48. Attitudes of Canadian general surgery staff and residents toward point-of-care ultrasound49. Psychological impact of COVID-19 on Canadian surgical residents50. Validation of an artificial intelligence platform for the guidance of safe laparoscopic cholecystectomy51. Predictors of recurrent appendicitis after nonoperative management: a prospective cohort study52. The effect of the first wave of the COVID-19 pandemic on colorectal and hepatobiliary oncologic outcomes at a tertiary care centre53. Trends in training and workforce representation for Canadian general surgeons working in critical care: a descriptive study54. White presentation: teaching safe opioid prescription and opioid use disorder management in Canadian universities56. How bad is really bad, eh? Impact of the first wave of the COVID-19 pandemic on residents’ operative volume: the experience of a Canadian general surgery program57. Surgeon-specific encounters within a multidisciplinary care pathway: Is there a role for shared care models in surgery?59. A pan-Canadian analysis of approach to treatment for acute appendicitis60. Appendix neoplasm stratified by age: understanding the best treatment for appendicitis61. Predicting acute cholecystitis on final pathology to prioritize surgical urgency: an evaluation of the Tokyo criteria and development of a novel predictive score62. Obesity is an independent predictor of acute renal failure after surgery64. Validation of a clinical decision-making assessment tool in general surgery65. Moral distress in the provision of palliative care delivery for surgical patients in British Columbia: lessons learned from the perspectives of general surgeons66. Delays in presentation and severity of illness predict adverse surgical outcomes among patients transferred from rural Indigenous communities for acute care surgery67. Remote video-based suturing education with smartphones (REVISE): a randomized controlled trial68. Modified Delphi consensus on appropriate use of laboratory investigations in acute care surgery patients72. Impacts of inpatient food at a tertiary care centre on patient satisfaction, nutrition and planetary health73. Racial disparities in health outcomes for oncological surgery in Canada75. Risk of recurrent laryngeal nerve injury from thyroidectomy is lower when intraoperative nerve monitoring (IONM) is used: an analysis of 17 688 patients from the NSQIP database01. The impact of the COVID-19 pandemic on non-smallcell lung cancer pathologic stage and presentation02. Screening criteria evaluation for expansion in pulmonary neoplasias (screen)03. Robotic-assisted lobectomy for early-stage lung cancer provides better patient-reported quality of life than video-assisted lobectomy: early results of the RAVAL trial04. Breathe Anew: designing and testing the feasibility of a novel intervention for lung cancer survivorship05. Learning objectives for thoracic surgery: developing a national standard for undergraduate medical education06. Plasma cell-free DNA as a point-of-care well-being biomarker for early-stage non-small-cell lung cancer patients07. Sarcopenia determined by skeletal muscle index predicts overall survival, disease-free survival and postoperative complications in resectable esophageal cancer: a systematic review and meta-analysis08. The short- and long-term effects of open v. minimally invasive thymectomy in myasthenia gravis patients: a systematic review and meta-analysis09. Optimizing opioid prescribing practices following minimally invasive lung resections through a structured quality improvement process10. Effects of virtual postoperative postdischarge care in patients undergoing lung resection during the COVID-19 pandemic11. Initiating Ethiopia’s first minimally invasive surgery program: a novel approach for collaborations in global surgical education12. Patient outcomes following salvage lung cancer surgery after definitive chemotherapy or radiation13. Replacing chest X-rays after chest tube removal with clinical assessment in postoperative thoracic surgery patients14. Updating the practice of thoracic surgery in Canada: a survey of the Canadian Association of Thoracic Surgeons15. The impact of COVID-19 on the diagnosis and treatment of lung cancer16. Development of a prediction model for survival time in esophageal cancer patients treated with resection17. The development and validation of a mixed reality thoracic surgical anatomy atlas18. Routine placement of feeding tubes should be avoided in esophageal cancer patients undergoing surgery19. Nodal count is no different during robotic segmentectomy compared with robotic lobectomy20. Point-of-care ultrasound-guided percutaneous biopsy of solid masses in the thoracic outpatient clinic: a safe, high-yield procedure to accelerate tissue diagnosis for patients with advanced thoracic malignancy21. Sarcopenia and modified frailty index are not associated with adverse outcomes after esophagectomy for esophageal cancer: a retrospective cohort study22. Near-infrared-guided segmental resection for lung cancer: an analysis of the learning curve23. Routine use of feeding jejunostomy tubes in patients undergoing esophagectomy for esophageal malignancy is safe and associated with low complication rates01. Ghost ileostomy versus loop ileostomy following total mesorectal excision for rectal cancer: a systematic review and meta-analysis02. Analysis of 100 consecutive colorectal cancers presenting at a Canadian tertiary care centre: delayed diagnosis and advanced disease03. Clinical delays and comparative outcomes in younger and older adults with colorectal cancer: a systematic review04. Recurrence rates of rectal cancer after transanal total mesorectal excision (taTME): a systematic review and meta-analysis05. Transanal total mesorectal excision for abdominoperineal resection (taTME-APR) is associated with poor oncological outcomes in rectal cancer patients: a word of caution from a multicentric Canadian cohort study06. Association between survival and receipt of recommended and timely treatment in locally advanced rectal cancer: a population-based study07. Trends and the impact of incomplete preoperative staging in rectal cancer08. Postoperative outcomes after elective colorectal surgery in patients with cirrhosis09. Bowel stimulation before loop ileostomy closure to reduce postoperative ileus: a multicentre, single-blinded, randomized controlled trial10. Recurrence following perineal rectosigmoidectomy ( Altemeier) with levatorplasty: a systematic review and meta-analysis11. Nonmodifiable risk factors and receipt of surveillance investigations following treatment of rectal cancer12. Safety and effectiveness of endoscopic full-thickness resection for the management of colorectal lesions: a systematic review and meta-analysis13. Impact of preoperative carbohydrate loading before colectomy: a systematic review and meta-analysis of randomized controlled trials14. Statin therapy in patients undergoing short-course neoadjuvant radiotherapy for rectal cancer15. Feasibility of targeted lymphadenectomy during complete mesocolic excision for colon cancer using indocyanine green immunofluorescence lymphatic mapping16. Feasibility of expanding an ambulatory colectomy protocol: a retrospective analysis of early discharge following minimally invasive colectomy in an enhanced recovery pathway17. Impact of rectal cancer on bowel dysfunction before treatment and its relationship with post-treatment function18. Canadian cost–utility analysis of artificial-intelligence-assisted colonoscopy for adenoma detection in fecal immunochemical-based colorectal cancer screening19. A comparison of outcomes following intracorporeal and extracorporeal anastomotic techniques in laparoscopic right colectomies20. Assessment of metabolic signatures using desorption electrospray ionization mass spectrometry (DESI) and rapid evaporative ionization mass spectrometry (REIMS) of rectal cancer samples to assist in determining treatment response21. The association between hospital characteristics and minimally invasive rectal cancer surgery: a population-based study22. Cancer centre level designation and the impact on treatment and outcomes in those with rectal cancer: a population-based study23. Oncological outcomes after colorectal cancer in patients with liver cirrhosis: a systematic review and meta-analysis24. Optimal preoperative nutrition for penetrating Crohn disease: a systematic review and meta-analysis25. Lymph node ratio as a predictor of survival for colon cancer: a systematic review and meta-analysis26. Barriers and facilitators for use of new recommendations for optimal endoscopic localization of colorectal neoplasms according to gastroenterologists and surgeons27. Emergency colorectal surgery in patients with cirrhosis: a population-based descriptive study28. Local recurrence rates and associated risk factors after transanal endoscopic microsurgery for benign polyps and adenocarcinomas29. Bowel dysfunction impacts mental health after restorative proctectomy for rectal cancer30. Evolution of psychological morbidity following restorative proctectomy for rectal cancer: a systematic review and meta-analysis31. Frailty predicts LARS and quality of life in rectal cancer survivors after restorative proctectomy32. Low anterior resection syndrome in a reference North American population: prevalence and predictive factors33. The evolution of enhanced recovery: same day discharge after laparoscopic colectomy34. Effect of ERAS protocols on length of stay after colorectal surgery: an interrupted time series analysis35. Practice patterns and outcomes in individuals with cirrhosis and colorectal cancer: a population-based study36. Understanding the impact of bowel function on quality of life after rectal cancer surgery37. Right-sided colectomies for diverticulitis have worse outcomes compared with left-sided colectomies38. Symptom burden and time from symptom onset to cancer diagnosis in patients with early-onset colorectal cancer39. The impact of access to robotic rectal surgery at a tertiary care centre: a Canadian perspective40. Management of rectal neuroendocrine tumours by transanal endoscopic microsurgery41. The gut microbiota modulates colorectal anastomotic healing in patients undergoing surgery for colorectal cancer42. Is there added risk of complications for concomitant procedures during an ileocolic resection for Crohn disease?43. Cost of stoma-related hospital readmissions for rectal cancer patients following restorative proctectomy with a diverting loop ileostomy: a nationwide readmissions database analysis44. Older age associated with quality of rectal cancer care: an ACS-NSQIP database study45. Outcomes of patients undergoing elective bowel resection before and after implementation of an anemia screening and treatment program47. Loop ileostomy closure as a 23-hour stay procedure: a randomized controlled trial48. Extended duration perioperative thromboprophylaxis with low-molecular-weight heparin to improve disease-free survival following surgical resection of colorectal cancer: a multicentre randomized controlled trial (PERIOP-01 Trial)49. Three-stage versus modified 2-stage ileal pouch anal anastomosis: perioperative outcomes, function and quality of life50. Compliance with extended venous thromboembolism prophylaxis in rectal cancer51. Extended-duration venous thromboembolism prophylaxis after diversion in rectal cancer52. Financial and occupational impact of low anterior resection syndrome: a qualitative study53. Nonoperative management for rectal cancer: patient perspectives54. Trends in ileostomy-related emergency department visits for rectal cancer patients55. Long-term implications of treatment of fecal incontinence: a single Canadian centre’s retrospective cohort study: a 17-year follow-up56. Externally benchmarking colorectal resection outcomes in our province against the ACS NSQIP risk calculator: identifying opportunities for improvement57. Externally benchmarking our provincial colectomy outcomes against the ACS NSQIP using the Codman Score: to identify possible opportunities for improvement of outcomes58. Rural v. urban documentation of recommended practices for optimal endoscopic colorectal lesion localization01. Incidence of in-hospital opioid use and pain after inguinal hernia repair02. Ventral hernia repair following liver transplantation: outcome of repair techniques and risk factors for recurrence01. Impact of the COVID-19 pandemic on bariatric surgery in North America: a retrospective analysis of 834 647 patients02. Patient selection and 30-day outcomes of SADI-S compared to RYGB: a retrospective cohort study of 47 375 patients03. New persistent opioid use following bariatric surgery: a systematic review and pooled proportion meta-analysis04. Bariatric surgery should be offered to active-duty military personnel: a retrospective study of the Canadian Armed Forces experience05. Opioid prescribing practices and use following bariatric surgery: a systematic review and pooled summary of data06. Sacred sharing circles: urban Indigenous Manitobans’ experiences with bariatric surgery07. Gastrogastric hernia after laparoscopic gastric great curve plication: a video presentation08. Characterization of comorbidities predictive of bariatric surgery09. Efficacy of preoperative high-dose liraglutide in patients with superobesity10. The effect of linear stapled gastrojejunostomy size in Roux-en-Y gastric bypass11. Fragility of statistically significant outcomes in randomized trials comparing bariatric surgeries12. Weight loss outcomes for patients undergoing conversion to Roux-en-Y gastric bypass after sleeve gastrectomy13. Are long waiting lists for bariatric surgery detrimental to patients? A single-centre experience14. Does upper gastrointestinal swallow study after bariatric surgery lead to earlier detection of leak?15. Pharmaceutical utilization before and after bariatric surgery16. Same-day discharge Roux-en-Y gastric bypass at a Canadian bariatric centre: pathway implementation and early experiences17. Safety and efficiency of performing primary bariatric surgery at an ambulatory site of a tertiary care hospital: a 5-year experience18. Impact of psychiatric diagnosis on weight loss outcomes 3 years after bariatric surgery19. Ursodeoxycholic acid (UDCA) for prevention of gallstone disease after laparoscopic sleeve gastrectomy (LSG): an Atlantic Canada perspective20. Fecal microbial transplantation and fibre supplementation in patients with severe obesity and metabolic syndrome: a randomized double-blind, placebo-controlled phase 2 trial01. Incidence, timing and outcomes of venous thromboembolism in patients undergoing surgery for esophagogastric cancer: a population-based cohort study04. Omission of axillary staging and survival in elderly women with early-stage breast cancer: a population-based cohort study05. Patients’ experiences receiving cancer surgery during the COVID-19 pandemic: a qualitative study06. Cancer surgery outcomes are better at high-volume centres07. Attitudes of Canadian colorectal cancer care providers toward liver transplantation for colorectal liver metastases: a national survey08. Quality of narrative central and lateral neck dissection reports for thyroid cancer treatment suggests need for a national standardized synoptic operative template09. Transoral endoscopic thyroidectomy vestibular approach (TOETVA): indications and technique10. Temporal trends in lymph node assessment as a quality indicator in colorectal cancer patients treated at a high-volume Canadian centre11. Molecular landscape of early-stage breast cancer with nodal metastasis12. Beta testing of a risk-stratified patient decision aid to facilitate shared decision making for postoperative extended thromboprophylaxis in patients undergoing major abdominal surgery for cancer13. Breast reconstruction use and impact on oncologic outcomes among inflammatory breast cancer patients: a systematic review14. Association between patient-reported symptoms and health care resource utilization: a first step to develop patient-centred value measures in cancer care15. Complications after colorectal liver metastases resection in Newfoundland and Labrador16. Why do patients with nonmetastatic primary retroperitoneal sarcoma not undergo resection?17. Loss of FAM46Cexpression predicts inferior postresection survival and induces ion channelopathy in gastric adenocarcinoma18. Liver-directed therapy of neuroendocrine liver metastases19. Neoadjuvant pembrolizumab use in microsatellite instability high (MSI-H) rectal cancer: benefits of its use in lynch syndrome20. MOLLI for excision of nonpalpable breast lesions: a case series22. Patients awaiting mastectomy report increased depression, anxiety, and decreased quality of life compared with patients awaiting lumpectomy for treatment of breast cancer23. Is microscopic margin status important in retroperitoneal sarcoma (RPS) resection? A systematic review and meta-analysis24. Absence of benefit of routine surveillance in very-low-risk and low-risk gastric gastrointestinal stromal tumors25. Effect of intraoperative in-room specimen radiography on margin status in breast-conserving surgery26. Active surveillance for DCIS of the breast: qualitative interviews with patients and physicians01 Outcomes following extrahepatic and intraportal pancreatic islet transplantation: a comparative cohort study02. Cholang-funga-gitis03. Evaluating the effect of a low-calorie prehepatectomy diet on perioperative outcomes: a systematic review and meta-analysis04. Toxicity profiles of systemic therapy for advanced hepatocellular carcinoma: a systematic review to guide neoadjuvant trials05. Should cell salvage be used in liver resection and transplantation? A systematic review and meta-analysis06. The association between surgeon and hospital variation in use of laparoscopic liver resection and short-term outcomes07. Systematic review and meta-analysis of prognostic factors for early recurrence in intrahepatic cholangiocarcinoma after curative-intent resection08. Impact of neoadjuvant chemotherapy on postoperative outcomes of patients undergoing hepatectomy for intrahepatic cholangiocarcinoma: ACS-NSQIP propensity-matched analysis09. The impact of prophylactic negative pressure wound therapy on surgical site infections in pancreatic resection: a systematic review and meta-analysis10. Does hepatic pedicle clamping increase the risk of colonic anastomotic leak after combined hepatectomy and colectomy? Analysis of the ACS NSQIP database11. Development of a culture process to grow a full-liver tissue substitute12. Liver transplantation for fibrolamellar hepatocellular carcinoma: an analysis of the European Liver Transplant Registry13. Arming beneficial viruses to treat pancreatic cancer14. Hepaticoduodenostomy versus hepaticojenunostomy for biliary reconstruction: a retrospective review of a single-centre experience15. Feasibility and safety of a “shared care” model in complex hepatopancreatobiliary surgery: a 5-year analysis of pancreaticoduodenectomy16. Laparoscopic v. open pancreaticoduodenectomy: initial institutional experience and NSQIP-matched analysis17. Laparoscopic spleen-preserving distal pancreatectomy: Why not do a Warshaw?18. The impact of COVID-19 on pancreaticoduodenectomy outcomes in a high-volume hepatopancreatobiliary centre19. Transitioning from open to minimally invasive pancreaticoduodenectomy: the learning curve factor in an academic centre20. Closed-incision negative-pressure wound therapy following pancreaticoduodenectomy for prevention of surgical site infections in high-risk patients21. Robotic Appleby procedure for recurrent pancreatic cancer22. The influence of viral hepatitis status on posthepatectomy complications in patients with hepatocellular carcinoma: a NSQIP analysis. Can J Surg 2022. [DOI: 10.1503/cjs.014322] [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] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
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Choi WJ, Ivanics T, Claasen MPAW, Gallinger S, Hansen B, Sapisochin G. Is it safe to administer neoadjuvant chemotherapy to patients undergoing hepatectomy for intrahepatic cholangiocarcinoma? ACS-NSQIP propensity-matched analysis. HPB (Oxford) 2022; 24:1535-1542. [PMID: 35474005 DOI: 10.1016/j.hpb.2022.03.010] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 01/11/2022] [Accepted: 03/14/2022] [Indexed: 12/12/2022]
Abstract
BACKGROUND The use of neoadjuvant chemotherapy (NAC) in patients with intrahepatic cholangiocarcinoma (iCCA) is increasing. The objective of this study was to compare the 30-day post-operative complications and length-of-stay (LOS) between patients undergoing hepatectomy for iCCA with and without NAC. METHODS A retrospective study was conducted using the ACS-NSQIP database queried from 2014 to 2018. Patients with NAC receipt were propensity-score matched into 1:3 ratio with controls using the greedy-matching algorithm and a caliper of 0.2. Logistic and Poisson regression models were used to estimate the effect sizes. RESULTS A total of 1508 patients who underwent hepatectomy for iCCA were included. 706 patients remained after matching and balance were achieved. The NAC group had 110 (60.1%) complications vs. 289 (55.3%) complications in the non-NAC group (p = 0.29). NAC was not associated with worse 30-day postoperative complications [OR 1.24, 95% CI: 0.87-1.76; p = 0.24]. Post-operative LOS in the NAC group was 8.56 days (mean, SD 7.4) vs. non-NAC group 9.27 days (mean, SD 8.41, p = 0.32). NAC was not associated with longer post-operative LOS [RR 0.93, 95% CI:0.80, 1.08; p = 0.32]. CONCLUSION NAC may be safely administered without increasing the risk of 30-day complications or post-operative hospital LOS.
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Affiliation(s)
- Woo Jin Choi
- University of Toronto, Department of General Surgery, Toronto, Canada; University Health Network, HPB Surgical Oncology, Toronto, Canada
| | - Tommy Ivanics
- University Health Network, HPB Surgical Oncology, Toronto, Canada; Department of Surgery, Henry Ford Hospital, Detroit, MI, USA; Department of Surgical Sciences, Akademiska Sjukhuset, Uppsala University, Uppsala, Sweden
| | - Marco P A W Claasen
- University Health Network, HPB Surgical Oncology, Toronto, Canada; Department of Surgery, Division of HPB & Transplant Surgery, Erasmus MC Transplant Institute, University Medical Centre Rotterdam, Rotterdam, the Netherlands
| | - Steven Gallinger
- University of Toronto, Department of General Surgery, Toronto, Canada; University Health Network, HPB Surgical Oncology, Toronto, Canada
| | - Bettina Hansen
- University Health Network, Center for Liver Disease, Toronto, Canada
| | - Gonzalo Sapisochin
- University of Toronto, Department of General Surgery, Toronto, Canada; University Health Network, HPB Surgical Oncology, Toronto, Canada.
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Choi WJ, Williams P, Englesakis M, Gallinger S, Hansen B, Sapisochin G. Systematic review and meta-analysis of prognostic factors for early recurrence in intrahepatic cholangiocarcinoma after curative-intent resection. Int J Surg 2022. [DOI: 10.1016/j.ijsu.2022.106335] [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] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Choi WJ, Ivanics T, Claasen M, Gallinger S, Hansen B, Sapisochin G. Impact of neoadjuvant chemotherapy on post-operative outcomes of patients undergoing hepatectomy for intrahepatic cholangiocarcinoma: ACS-NSQIP propensity-matched analysis. Int J Surg 2022. [DOI: 10.1016/j.ijsu.2022.106330] [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] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Choi WJ, Williams PJ, Claasen MPAW, Ivanics T, Englesakis M, Gallinger S, Hansen B, Sapisochin G. ASO Visual Abstract: Systematic Review and Meta-analysis of Prognostic Factors for Early Recurrence in Intrahepatic Cholangiocarcinoma After Curative-Intent Resection. Ann Surg Oncol 2022. [PMID: 35298761 DOI: 10.1245/s10434-022-11512-5] [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] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Woo Jin Choi
- Department of General Surgery, University of Toronto, Toronto, ON, Canada.,HPB Surgical Oncology, University Health Network, Toronto, ON, Canada
| | - Phil J Williams
- Department of General Surgery, University of Toronto, Toronto, ON, Canada
| | - Marco P A W Claasen
- HPB Surgical Oncology, University Health Network, Toronto, ON, Canada.,Department of Surgery, Division of HPB and Transplant Surgery, Erasmus MC Transplant Institute, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Tommy Ivanics
- HPB Surgical Oncology, University Health Network, Toronto, ON, Canada.,Department of Surgery, Henry Ford Hospital, Detroit, MI, USA.,Department of Surgical Sciences, Akademiska Sjukhuset, Uppsala University, Uppsala, Sweden
| | - Marina Englesakis
- Library and Information Services, University Health Network, Toronto, ON, Canada
| | - Steven Gallinger
- Department of General Surgery, University of Toronto, Toronto, ON, Canada.,HPB Surgical Oncology, University Health Network, Toronto, ON, Canada
| | - Bettina Hansen
- Center for Liver Disease, University Health Network, Toronto, ON, Canada
| | - Gonzalo Sapisochin
- Department of General Surgery, University of Toronto, Toronto, ON, Canada. .,HPB Surgical Oncology, University Health Network, Toronto, ON, Canada.
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Choi WJ, Sapisochin G. ASO Author Reflections: Searching for Prognostic Factors of Early Recurrence in Intrahepatic Cholangiocarcinoma. Ann Surg Oncol 2022; 29:10.1245/s10434-022-11539-8. [PMID: 35284976 DOI: 10.1245/s10434-022-11539-8] [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] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 02/16/2022] [Indexed: 02/21/2024]
Affiliation(s)
- Woo Jin Choi
- Department of General Surgery, University of Toronto, Toronto, Canada
- HBP and Multi Organ Transplant Program, Division of General Surgery, HPB Surgical Oncology, University Health Network, Toronto, Canada
| | - Gonzalo Sapisochin
- Department of General Surgery, University of Toronto, Toronto, Canada.
- HBP and Multi Organ Transplant Program, Division of General Surgery, HPB Surgical Oncology, University Health Network, Toronto, Canada.
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Choi WJ, Williams PJ, Claasen MPAW, Ivanics T, Englesakis M, Gallinger S, Hansen B, Sapisochin G. Systematic Review and Meta-Analysis of Prognostic Factors for Early Recurrence in Intrahepatic Cholangiocarcinoma After Curative-Intent Resection. Ann Surg Oncol 2022; 29:10.1245/s10434-022-11463-x. [PMID: 35181812 DOI: 10.1245/s10434-022-11463-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 02/03/2022] [Indexed: 12/15/2022]
Abstract
BACKGROUND Recurrence rates of intrahepatic cholangiocarcinoma (iCCA) after curative hepatectomy are as high as 50% to 70%, and about half of these recurrences occur within 2 years. This systematic review aims to define prognostic factors (PFs) for early recurrence (ER, within 24 months) and 24-month disease-free survival (DFS) after curative-intent iCCA resections. METHODS Systematic searching was performed from database inception to 14 January 2021. Duplicate independent review and data extraction were performed. Data on 13 predefined PFs were collected. Meta-analysis was performed on PFs for ER and summarized using forest plots. The Quality in Prognostic Factor Studies tool was used for risk-of-bias assessment. RESULTS The study enrolled 10 studies comprising 4158 patients during an accrual period ranging from 1990 to 2016. In the risk-of-bias assessment of patients who experienced ER after curative-intent iCCA resection, six studies were rated as low risk and four as moderate risk (49.6%; 95% confidence interval [CI], 49.2-50.0). Nine studies were pooled for meta-analysis. Of the postoperative PFs, multiple tumors, microvascular invasion, macrovascular invasion, lymph node metastasis, and R1 resection were associated with an increased hazard for ER or a reduced 24-month DFS, and the opposite was observed for receipt of adjuvant chemo/radiation therapy. Of the preoperative factors, cirrhosis, sex, HBV status were not associated with ER or 24-month DFS. CONCLUSION The findings from this systematic review could allow for improved surveillance, prognostication, and treatment decision-making for patients with resectable iCCAs. Further well-designed prospective studies are needed to explore prognostic factors for iCCA ER with a focus on preoperative variables.
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Affiliation(s)
- Woo Jin Choi
- Department of General Surgery, University of Toronto, Toronto, Canada
- Division of General Surgery, HPB Surgical Oncology, HBP and Multi Organ Transplant Program, University Health Network, University of Toronto, Toronto, Canada
| | - Phil J Williams
- Department of General Surgery, University of Toronto, Toronto, Canada
| | - Marco P A W Claasen
- Division of General Surgery, HPB Surgical Oncology, HBP and Multi Organ Transplant Program, University Health Network, University of Toronto, Toronto, Canada
- Department of Surgery, Division of HPB and Transplant Surgery, Erasmus MC Transplant Institute, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Tommy Ivanics
- Division of General Surgery, HPB Surgical Oncology, HBP and Multi Organ Transplant Program, University Health Network, University of Toronto, Toronto, Canada
- Department of Surgery, Henry Ford Hospital, Detroit, MI, USA
- Department of Surgical Sciences, Uppsala University, Akademiska Sjukhuset, Uppsala, Sweden
| | - Marina Englesakis
- Library and Information Services, University Health Network, Toronto, Canada
| | - Steven Gallinger
- Department of General Surgery, University of Toronto, Toronto, Canada
- Division of General Surgery, HPB Surgical Oncology, HBP and Multi Organ Transplant Program, University Health Network, University of Toronto, Toronto, Canada
| | - Bettina Hansen
- Center for Liver Disease, University Health Network, Toronto, Canada
| | - Gonzalo Sapisochin
- Department of General Surgery, University of Toronto, Toronto, Canada.
- Division of General Surgery, HPB Surgical Oncology, HBP and Multi Organ Transplant Program, University Health Network, University of Toronto, Toronto, Canada.
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Kim ES, Park TY, Choi KH, Choi WJ, Suh DH. Tunable cross‐linked copolymer networks for improvement of physical performance. Journal of Polymer Science 2021. [DOI: 10.1002/pol.20210374] [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] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Eun Seon Kim
- Department of Chemical engineering Hanyang University Seoul South Korea
- Chemical Materials Solutions Center Korea Research Institute of Chemical Technology (KRICT) Daejeon South Korea
| | - Tai Young Park
- Department of Chemical engineering Hanyang University Seoul South Korea
| | - Kyoung Hwan Choi
- Department of Chemical engineering Hanyang University Seoul South Korea
| | - Woo Jin Choi
- Chemical Materials Solutions Center Korea Research Institute of Chemical Technology (KRICT) Daejeon South Korea
| | - Dong Hack Suh
- Department of Chemical engineering Hanyang University Seoul South Korea
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Muaddi H, Silva S, Choi WJ, Coburn N, Hallet J, Law C, Cheung H, Karanicolas PJ. When is a Ghost Really Gone? A Systematic Review and Meta-analysis of the Accuracy of Imaging Modalities to Predict Complete Pathological Response of Colorectal Cancer Liver Metastases After Chemotherapy. Ann Surg Oncol 2021; 28:6805-6813. [PMID: 33772391 DOI: 10.1245/s10434-021-09824-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 02/20/2021] [Indexed: 11/18/2022]
Abstract
BACKGROUND Administration of chemotherapy to patients with colorectal liver metastases may result in disappearing liver metastases (DLM). This poses a therapeutic dilemma due to the uncertainty of true complete (pathological) response. OBJECTIVE We aimed to examine the diagnostic performance of imaging modalities in detecting true complete response in patients with DLM after chemotherapy. METHODS We performed a systematic search for articles assessing the diagnostic performance of imaging modalities in evaluating DLM following chemotherapy. True complete response was defined as 1-year recurrence-free survival in non-resected patients or complete pathological response on histologic examination in resected patients. We calculated the negative predictive value (NPV) for detecting true complete response of each imaging modality using a random effects model. RESULTS Thirteen studies comprising 332 patients with at least one DLM were included. The number of DLMs after chemotherapy was 955 with computed tomography (CT), 104 with positron emission tomography (PET), 50 with intraoperative ultrasound (IOUS), 585 with magnetic resonance imaging (MRI), and 175 with contrast-enhanced IOUS (CEIOUS). Substantial variation in study design, patient characteristics, and imaging features was observed. Pooled NPV was 0.79 (95% confidence interval [CI] 0.53-0.96), 0.73 (95% CI 0.58-0.85), 0.54 (95% CI 0.37-0.7), 0.47 (95% CI 0.34-0.61), and 0.22 (95% CI 0.11-0.39) for CEIOUS, MRI, IOUS, CT, and PET, respectively. CONCLUSION After chemotherapy, MRI or CEIOUS are the most accurate imaging modalities for assessment of DLM and should be used routinely in this context. Given the high NPV of these two modalities, surgical resection of visible CRLM is warranted if technically possible, even if DLM remain.
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Affiliation(s)
- Hala Muaddi
- Department of Surgery, Division of General Surgery, University of Toronto, Toronto, ON, Canada
| | - Stephanie Silva
- Department of Surgery, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - Woo Jin Choi
- Department of Surgery, Division of General Surgery, University of Toronto, Toronto, ON, Canada
| | - Natalie Coburn
- Department of Surgery, Division of General Surgery, University of Toronto, Toronto, ON, Canada.,Department of Surgery, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - Julie Hallet
- Department of Surgery, Division of General Surgery, University of Toronto, Toronto, ON, Canada.,Department of Surgery, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - Calvin Law
- Department of Surgery, Division of General Surgery, University of Toronto, Toronto, ON, Canada.,Department of Surgery, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - Helen Cheung
- Department of Medical Imaging, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - Paul J Karanicolas
- Department of Surgery, Division of General Surgery, University of Toronto, Toronto, ON, Canada. .,Department of Surgery, Sunnybrook Health Sciences Centre, Toronto, ON, Canada.
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Kim ES, Lee JH, Suh DH, Choi WJ. Influence of UV Polymerization Curing Conditions on Performance of Acrylic Pressure Sensitive Adhesives. Macromol Res 2021; 29:129-139. [PMID: 33679274 PMCID: PMC7921609 DOI: 10.1007/s13233-021-9018-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 12/17/2020] [Accepted: 01/07/2021] [Indexed: 11/22/2022]
Abstract
Acrylic pressure sensitive adhesives (PSAs) were prepared by UV polymerization under varying curing conditions of both fast and slow curing, employing high- and low-intensity UV radiation, respectively. The influences of curing conditions and isobornyl acrylate (IBOA) content on PSA performance were comprehensively investigated by measurement of their rheological, thermal, and adhesive properties. In particular, rheological characterization was accomplished by several analytical methods, such as in situ UV rheology, frequency sweep, stress relaxation, and temperature ramp tests, to understand the effect of the UV curing process and IBOA content on the viscoelastic behavior of acrylic PSAs. The slow-cured samples were observed to form more tightly crosslinked networks compared to the fast-cured. On the other hand, at high loading levels of IBOA, in the case of slow curing, the sample exhibited a contrasting trend, having the shortest stress relaxation time and the highest energy dissipation; this was due to molecular chain scission occurring in the crosslinked polymer during UV polymerization. Consequently, we successfully demonstrated the influence of monomer composition of acrylic PSAs, and that of curing conditions employed in UV polymerization. This study provides valuable insights for the development of crosslinked polymer networks of acrylic PSAs for flexible display applications.
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Affiliation(s)
- Eun Seon Kim
- Chemical Materials Solutions Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon, 34114 Korea
- Department of Chemical Engineering, Hanyang University, Seoul, 04763 Korea
| | - Jae Heung Lee
- Chemical Materials Solutions Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon, 34114 Korea
| | - Dong Hack Suh
- Department of Chemical Engineering, Hanyang University, Seoul, 04763 Korea
| | - Woo Jin Choi
- Chemical Materials Solutions Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon, 34114 Korea
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Kim ES, Kim SH, Lee SJ, Lee JH, Byeon M, Suh DH, Choi WJ. Facile fabrication of micro/nano-structured wrinkles by controlling elastic properties of polydimethylsiloxane substrates. POLYMER 2021. [DOI: 10.1016/j.polymer.2020.123087] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Shiroky J, Lillie E, Muaddi H, Sevigny M, Choi WJ, Karanicolas PJ. Response to Letter to the Editor: The impact of negative pressure wound therapy (NPWT) for closed surgical incision on surgical site infection: A systematic review and meta-analysis. Surgery 2020; 169:1259. [PMID: 33172622 DOI: 10.1016/j.surg.2020.10.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Accepted: 10/05/2020] [Indexed: 11/24/2022]
Affiliation(s)
- Jonah Shiroky
- Division of General Surgery, Sunnybrook Health Sciences Centre, Toronto, Canada
| | - Erin Lillie
- Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Canada
| | - Hala Muaddi
- Division of General Surgery, Department of Surgery, University of Toronto, Canada
| | - Marika Sevigny
- Division of General Surgery, Department of Surgery, University of Toronto, Canada
| | - Woo Jin Choi
- Division of General Surgery, Department of Surgery, University of Toronto, Canada
| | - Paul J Karanicolas
- Division of General Surgery, Sunnybrook Health Sciences Centre, Toronto, Canada; Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Canada; Division of General Surgery, Department of Surgery, University of Toronto, Canada; Institute of Health Policy, Management and Evaluation, University of Toronto, Canada.
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Kim ES, Song DB, Choi KH, Lee JH, Suh DH, Choi WJ. Robust and recoverable dual cross‐linking networks in pressure‐sensitive adhesives. Journal of Polymer Science 2020. [DOI: 10.1002/pol.20200628] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Eun Seon Kim
- Chemical Materials Solutions Center Korea Research Institute of Chemical Technology (KRICT) Daejeon South Korea
- Department of Chemical engineering Hanyang University Seoul South Korea
| | - Da Bin Song
- Department of Chemical engineering Hanyang University Seoul South Korea
| | - Kyoung Hwan Choi
- Department of Chemical engineering Hanyang University Seoul South Korea
| | - Jae Heung Lee
- Chemical Materials Solutions Center Korea Research Institute of Chemical Technology (KRICT) Daejeon South Korea
| | - Dong Hack Suh
- Department of Chemical engineering Hanyang University Seoul South Korea
| | - Woo Jin Choi
- Chemical Materials Solutions Center Korea Research Institute of Chemical Technology (KRICT) Daejeon South Korea
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Lim KT, Choi WJ. Effect of fall characteristics on the severity of hip impact during a fall on the ground from standing height. Osteoporos Int 2020; 31:1713-1719. [PMID: 32346772 DOI: 10.1007/s00198-020-05432-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 04/22/2020] [Indexed: 11/25/2022]
Abstract
UNLABELLED The magnitude of hip impact force during a fall on the ground (i.e., concrete surface) from standing height was determined. We found that this force decreases up to 59%, depending on how they land on the ground. INTRODUCTION We determined the magnitude of hip impact force that humans may experience in the event of a fall from standing height on the ground, in order to examine how the hip impact force was affected by characteristics of a fall. METHODS Twenty subjects mimicked a typical older adults' falls on a mat. Trials were acquired with three initial fall directions: forward, sideways, and backward. Trials were also acquired with three knee positions at the time of hip impact: knee together, knee on the mat, and free knee. During falls, attenuated vertical hip impact forces and corresponding depression of the mat were measured via a force plate placed under the mat and motion capture system, respectively. Using a mass-spring model, actual hip impact force and body stiffness during a fall on the ground were estimated. RESULTS Hip impact force averaged 4.0 kN (SD = 1.7). The hip impact force was associated with knee condition (F = 25.6, p < 0.005), but not with fall direction (F = 0.4, p = 0.599). Compared with "knee on the mat," hip impact force averaged 59% and 45% greater in "free knee" and "knee together," respectively (4.6 versus 2.9 kN, p < 0.005; 4.3 versus 2.9 kN, p < 0.005). However, the hip impact force did not differ between "free knee" and "knee together (4.6 versus 4.3 kN, p = 0.554). CONCLUSION Our results suggest that hip fracture risk during a fall decreases substantially, depending on how they land on the ground, informing the development of safe landing strategies to prevent fall-related hip fractures in older adults.
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Affiliation(s)
- K-T Lim
- Injury Prevention and Biomechanics Laboratory, Department of Physical Therapy, Yonsei University, 1 Yonseidae-gil, Wonju, Gangwon-do, 26493, South Korea
| | - W J Choi
- Injury Prevention and Biomechanics Laboratory, Department of Physical Therapy, Yonsei University, 1 Yonseidae-gil, Wonju, Gangwon-do, 26493, South Korea.
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Jo KI, Oh Y, Sung BJ, Kim TH, Um MS, Choi WJ, Bang J, Yuan G, Satija SK, Koo J. Enhanced Dynamics of Confined Polymers near the Immiscible Polymer-Polymer Interface: Neutron Reflectivity Studies. ACS Macro Lett 2020; 9:210-215. [PMID: 35638684 DOI: 10.1021/acsmacrolett.9b01011] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
For polymer-blend films, local dynamics in confined polymer domains tend to differ from the bulk because of significant contributions from the polymer-polymer interface. Herein, we investigated the diffusion dynamics of entangled polymer thin films confined between different polymers in a direction perpendicular to the surface using neutron reflectivity. We found that a bilayer of poly(methyl methacrylate) (PMMA) and deuterated PMMA (dPMMA) sandwiched between polystyrene (PS) layers exhibited significant increase in mobility near the polymer-polymer interface with decreasing PMMA thickness. This indicates that the contribution of repulsive interactions at the immiscible polymer-polymer interface becomes more significant as the film thickness decreases. We also found that the interfacial roughness between PMMA and PS (28 Å at equilibrium) and soft confinement of PS layers did not significantly affect the change in the diffusion dynamics of the adjacent PMMA. This was evidenced by comparison with the diffusion results of multilayers with a flat interface (8 Å at equilibrium) between PMMA and hard PS by UV cross-linking.
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Affiliation(s)
- Kyoung-Il Jo
- Neutron Science Center, Korea Atomic Energy Research Institute (KAERI), Daejeon 34057, Korea
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Korea
| | - Younghoon Oh
- Department of Chemistry and Research Institute for Basic Science, Sogang University, Seoul 04107, Korea
| | - Bong June Sung
- Department of Chemistry and Research Institute for Basic Science, Sogang University, Seoul 04107, Korea
| | - Tae-Ho Kim
- Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, Korea
| | - Min Seop Um
- Chemical Materials Solutions Center, Korea Research Institute of Chemical Technology, Daejeon 34114, Korea
| | - Woo Jin Choi
- Chemical Materials Solutions Center, Korea Research Institute of Chemical Technology, Daejeon 34114, Korea
| | - Joona Bang
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Korea
| | - Guangcui Yuan
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Sushil K. Satija
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Jaseung Koo
- Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, Korea
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Choi WJ, Dong HJ, Jeong HU, Ryu DW, Song SM, Kim YR, Jung HH, Kim TH, Kim YH. Lactobacillus plantarum LMT1-48 exerts anti-obesity effect in high-fat diet-induced obese mice by regulating expression of lipogenic genes. Sci Rep 2020; 10:869. [PMID: 31964951 PMCID: PMC6972779 DOI: 10.1038/s41598-020-57615-5] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [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: 02/11/2019] [Accepted: 01/03/2020] [Indexed: 12/16/2022] Open
Abstract
Obesity is a major health problem and is known to be closely associated with metabolic diseases. Abnormal hepatic accumulation of fat causes fatty liver or hepatic steatosis, and long-term consumption of a high-fat diet is known to be a key obesity-causing factor. Recent studies have demonstrated that probiotics such as Lactobacillus strains, exert an anti-obesity effect by regulating adipogenesis. However, it is still unknown how the consumption of probiotics can reduce abdominal fat volume by regulating the hepatic expression of lipogenic genes. Therefore, we evaluated the effect of long-term ingestion of L. plantarum LMT1-48 on the expression of lipogenic genes in high-fat diet (HFD)-fed mice. We observed that treatment of 3T3-L1 adipocytes with L. plantarum LMT1-48 extract inhibited their differentiation and lipid accumulation by downregulating lipogenic genes, namely, PPARγ, C/EBPα, FAS, and FABP4. Interestingly, administration of L. plantarum LMT1-48 reduced liver weight and liver triglycerides concurrently with the downregulation of the lipogenic genes PPARγ, HSL, SCD-1, and FAT/CD36 in the liver, resulting in the reduction of body weight and fat volume in HFD-fed obese mice. Notably, we also observed that the administration of at least 106 CFU of L. plantarum LMT1-48 significantly lowered body weight and abdominal fat volume in modified diet-fed mouse models. Collectively, these data suggest that L. plantarum LMT1-48 is a potential healthy food for obese people.
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Affiliation(s)
- Woo Jin Choi
- Medytox Gwangkyo R&D center, Medytox Inc., Suwon, Republic of Korea
| | - Hye Jin Dong
- Medytox Gwangkyo R&D center, Medytox Inc., Suwon, Republic of Korea
| | - Hyun Uk Jeong
- Medytox Gwangkyo R&D center, Medytox Inc., Suwon, Republic of Korea
| | - Dong Wook Ryu
- Medytox Gwangkyo R&D center, Medytox Inc., Suwon, Republic of Korea
| | - Soo Min Song
- Medytox Gwangkyo R&D center, Medytox Inc., Suwon, Republic of Korea
| | - Yu Ri Kim
- Medytox Gwangkyo R&D center, Medytox Inc., Suwon, Republic of Korea
| | | | - Tai Hoon Kim
- Medytox Gwangkyo R&D center, Medytox Inc., Suwon, Republic of Korea
| | - Yeung-Hyen Kim
- Medytox Gwangkyo R&D center, Medytox Inc., Suwon, Republic of Korea.
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Kim M, Song HY, Choi WJ, Hyun K. Evaluation of the Degree of Dispersion of Polymer Nanocomposites (PNCs) Using Nonlinear Rheological Properties by FT-Rheology. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01302] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Mingeun Kim
- School of Chemical Biomolecular Engineering, Pusan National University, Busan 46241, Republic of Korea
| | - Hyeong Yong Song
- School of Chemical Biomolecular Engineering, Pusan National University, Busan 46241, Republic of Korea
| | - Woo Jin Choi
- Chemical Materials Solutions Center, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea
| | - Kyu Hyun
- School of Chemical Biomolecular Engineering, Pusan National University, Busan 46241, Republic of Korea
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Oh ST, Han KT, Choi WJ, Park J. Effect of drug compliance on health care costs in newly-diagnosed dementia: a nation-wide analysis. Eur J Public Health 2019. [DOI: 10.1093/eurpub/ckz187.216] [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: 11/13/2022] Open
Abstract
Abstract
Background
The cost-effectiveness of both cholinesterase inhibitors and memantine by delaying nursing home placement has been supported by numerous studies. The importance of sustained pharmacological treatment in dementia has been relatively less recognized by public health policies compared to early diagnosis. We investigated the effect of the drug (donepezil, rivastigmine, galantamine, and memantine) compliance on the health care costs in newly-diagnosed dementia.
Methods
National Health Insurance Service (NHIS) database which covers the entire population of South Korea was used for analysis. Health care expenditure of patients newly-diagnosed with dementia in between 2012 and 2014 was investigated for 3 to 5 years. For drug compliance, we used Medication Possession Ratio (MPR) that indicates the percentage of time a patient has access to medication. Multivariate linear regression analysis including generalized estimated equation and gamma distribution was used for statistical analysis.
Results
We identified 252,594 patients who were both prescribed with cognitive enhancers and newly diagnosed with dementia. When initial MPR increased 20%, total health care costs decreased 8.4% (RR = 0.916, 95%; CI 0.914 to 0.916). Same relationship was shown with medical costs related to dementia, admission to a general hospital, and emergency room visits. When MPR increased 20% compared to the previous year, the total health care costs, admission to a general hospital, emergency room visits, and admission to a nursing hospital decreased.
Conclusions
This population-based retrospective cohort study provides evidence that patients newly-diagnosed with dementia who showed higher initial drug compliance or maintained antidementia drugs (Cholinesterase inhibitors and memantine) would benefit in total health-care costs.
Key messages
Public health care policies should not only focus on early diagnosis in dementia, but also recognize the importance of adherence to cognitive enhancers. To maximize the positive pharmacoeconomic effect of early diagnosis of dementia, it is important to sustain adequate drug compliance to cognitive enhancers.
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Affiliation(s)
- S T Oh
- Department of Psychiatry, National Health Insurance Service Ilsan Hospital, Goyang, South Korea
- Institute of Behavioral Science in Medicine, Yonsei University College of Medicine, Seoul, South Korea
| | - K T Han
- Division of Cancer Control & Policy, National Cancer Control Institute, National Cancer Center, Goyang, South Korea
| | - W J Choi
- Yonsei Hana Psychiatry Clinic and Institute of Mental Health, Goyang, South Korea
| | - J Park
- Department of Psychiatry, National Health Insurance Service Ilsan Hospital, Goyang, South Korea
- Institute of Behavioral Science in Medicine, Yonsei University College of Medicine, Seoul, South Korea
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Affiliation(s)
- Woo Jin Choi
- Chemical Materials Solutions Center, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, South Korea
- Polymer Science and Engineering Department, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - R. Konane Bay
- Polymer Science and Engineering Department, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Alfred J. Crosby
- Polymer Science and Engineering Department, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
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Lee JM, Noh GY, Kim BG, Yoo Y, Choi WJ, Kim DG, Yoon HG, Kim YS. Synthesis of Poly(phenylene polysulfide) Networks from Elemental Sulfur and p-Diiodobenzene for Stretchable, Healable, and Reprocessable Infrared Optical Applications. ACS Macro Lett 2019; 8:912-916. [PMID: 35619488 DOI: 10.1021/acsmacrolett.9b00306] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The synthesis and characterization of poly(phenylene polysulfide) networks (PSNs) with controlled average sulfur ranks, from elemental sulfur (ES) and p-diiodobenzene (DIB), are investigated. The PSN films, prepared via simple hot pressing, are found to possess large extensibility up to around 300% and complete recovery of shape and mechanical properties after deformation, which are attributed to the loosely cross-linked network structures mainly consisting of linear poly(phenylene polysulfide) chains. The covalent polysulfide linkages in the PSNs also exhibit dynamic behaviors under ultraviolet (UV) or thermal treatment, thus, enabling self-healing and reprocessing of the films when scratched and broken, respectively. Combined with the unique mechanical properties of the PSNs, their high refractive index and excellent infrared (IR) transparency contribute to the preparation of stretchable, healable, and reprocessable IR transmitting materials for potential deformable and stretchable optical applications.
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Affiliation(s)
- Ji Mok Lee
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Guk Yun Noh
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Byoung Gak Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Youngjae Yoo
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Woo Jin Choi
- Chemical Materials Solutions Center, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Dong-Gyun Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Ho Gyu Yoon
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Yong Seok Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
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Choi WJ, Dong HJ, Jeong HU, Jung HH, Kim YH, Kim TH. Antiobesity Effects of Lactobacillus plantarum LMT1-48 Accompanied by Inhibition of Enterobacter cloacae in the Intestine of Diet-Induced Obese Mice. J Med Food 2019; 22:560-566. [PMID: 31013456 DOI: 10.1089/jmf.2018.4329] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The gut microbiota is the most important environmental factor that plays a role in inducing obesity. The gram-negative bacteria, Enterobacter cloacae strains, recently identified in obese mice are considered to be pathogenic bacteria in the gut. Probiotics are important members of the gut microbiota and exert beneficial effects, including inhibiting the growth of potential pathogenic bacteria. Therefore, we isolated a total of 230 lactic acid bacteria from traditional, Korean fermented foods and fecal samples from newborn infants, including Lactobacillus plantarum LMT1-48, which exhibited maximal antimicrobial activity against E. cloacae. We next investigated the functional antiobesity effects of L. plantarum LMT1-48 in an E. cloacae-induced high-fat diet (HFD)-fed animal obesity model. To this end, the L. plantarum LMT1-48 showed antiobesity effects, including body weight loss and reduction of abdominal fat volume, which was accompanied by a decrease in leptin and total cholesterol levels in E. cloacae-induced HFD-fed mice. Notably, gut microbiota diversity also increased after long-term ingestion of L. plantarum LMT1-48, resulting in amelioration of obesity in E. cloacae-induced HFD-fed mice. Accordingly, results suggest that dietary intake of L. plantarum LMT1-48 protects against the onset of E. cloacae-induced obesity.
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Affiliation(s)
- Woo Jin Choi
- Medytox Gwangkyo R&D Center, Medytox, Inc., Suwon, Korea
| | - Hye Jin Dong
- Medytox Gwangkyo R&D Center, Medytox, Inc., Suwon, Korea
| | - Hyun Uk Jeong
- Medytox Gwangkyo R&D Center, Medytox, Inc., Suwon, Korea
| | - Hyun Ho Jung
- Medytox Gwangkyo R&D Center, Medytox, Inc., Suwon, Korea
| | - Yeung-Hyen Kim
- Medytox Gwangkyo R&D Center, Medytox, Inc., Suwon, Korea
| | - Tai Hoon Kim
- Medytox Gwangkyo R&D Center, Medytox, Inc., Suwon, Korea
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Seo YI, Choi WJ, Kimura SI, Kwon YS. Evidence for a preformed Cooper pair model in the pseudogap spectra of a Ca 10(Pt 4As 8)(Fe 2As 2) 5 single crystal with a nodal superconducting gap. Sci Rep 2019; 9:3987. [PMID: 30850717 PMCID: PMC6408529 DOI: 10.1038/s41598-019-40528-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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: 08/06/2018] [Accepted: 02/14/2019] [Indexed: 11/28/2022] Open
Abstract
For high-Tc superconductors, clarifying the role and origin of the pseudogap is essential for understanding the pairing mechanism. Among the various models describing the pseudogap, the preformed Cooper pair model is a potential candidate. Therefore, we present experimental evidence for the preformed Cooper pair model by studying the pseudogap spectrum observed in the optical conductivity of a Ca10(Pt4As8)(Fe2As2)5 (Tc = 34.6 K) single crystal. We observed a clear pseudogap structure in the optical conductivity and observed its temperature dependence. In the superconducting (SC) state, one SC gap with a gap size of Δ = 26 cm−1, a scattering rate of 1/τ = 360 cm−1 and a low-frequency extra Drude component were observed. Spectral weight analysis revealed that the SC gap and pseudogap are formed from the same Drude band. This means that the pseudogap is a gap structure observed as a result of a continuous temperature evolution of the SC gap observed below Tc. This provides clear experimental evidence for the preformed Cooper pair model.
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Affiliation(s)
- Y I Seo
- Department of Emerging Materials Science, DGIST, Daegu, 711-873, Republic of Korea
| | - W J Choi
- Department of Emerging Materials Science, DGIST, Daegu, 711-873, Republic of Korea
| | - Shin-Ichi Kimura
- Graduate School of Frontier Biosciences and Department of Physics, Graduate School of Science, Osaka University, Suita, 565-0871, Japan
| | - Yong Seung Kwon
- Department of Emerging Materials Science, DGIST, Daegu, 711-873, Republic of Korea.
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Kwon S, Yoon DS, Bae IE, Choi WJ, Choi IS, Lee SE, Moon JI, Sung NS, Park SM. Abstract P4-08-22: Impact of application of AJCC 8th edition on survival rate of the breast cancer. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p4-08-22] [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: 11/16/2022]
Abstract
Abstract
Background
The AJCC 8 edition has changed much in comparison with the 7 edition. In addition to TNM stage, biologic marker (ER, PR, HER2), Histologic grade and multigene assays (oncotype Dx.) should be considered for staging. and it has been applied since January 1, 2018.
patients were recategorized and analyzed in order to know if this more complex classification helps to predict the real prognosis of the patients,
Method
We review patients who were diagnosed and treated as breast cancer at Konyang Universty Hospital. we studied retrospectively 582 patients who were followed up and were able to review.
Stage was classified according to AJCC 7th edition and AJCC 8th edition. survival rate of each stage were analyzed in both editions.
Result
Mean follow up period was 68.6 months. Total 582 patients were included. There was no change in the stage in 257 patients. In 195 patients, the stage was elevated and in 130 patients, the stage was changed down. When classified as AJCC 7th edition, the 5year-survival rate was 95.9% in stage I, 97.9% in stage II, 93.1% in stage III and 89.9% in stage IV. The survival rate of patients in stage I was lower than that of stage II. However, when the AJCC 8th edition was applied, the 5- year survival rate was 97.9% in stage I, 96.9% in stage II, 92.2% in stage III, and 89.9% in stage IV. In 8th edition, the patients in lower stage has higher survival rate.
Conclusion
The prediction of survival rate by stage was more accurate and the difference in survival rate of each stages was more clearly distinguished when The AJCC 8th edition was applied than AJCC 7th edition. AJCC 8th edition was reliable and useful for prediction of prognosis of breast cancer patient.
Citation Format: Kwon S, Yoon DS, Bae IE, Choi WJ, Choi IS, Lee SE, Moon JI, Sung NS, Park SM. Impact of application of AJCC 8th edition on survival rate of the breast cancer [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P4-08-22.
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Affiliation(s)
- S Kwon
- Konyang University Hospital, Daejeon, Korea
| | - DS Yoon
- Konyang University Hospital, Daejeon, Korea
| | - IE Bae
- Konyang University Hospital, Daejeon, Korea
| | - WJ Choi
- Konyang University Hospital, Daejeon, Korea
| | - IS Choi
- Konyang University Hospital, Daejeon, Korea
| | - SE Lee
- Konyang University Hospital, Daejeon, Korea
| | - JI Moon
- Konyang University Hospital, Daejeon, Korea
| | - NS Sung
- Konyang University Hospital, Daejeon, Korea
| | - SM Park
- Konyang University Hospital, Daejeon, Korea
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Kim NK, Cha EJ, Jung M, Kim J, Jeong GJ, Kim YS, Choi WJ, Kim BS, Kim DG, Lee JC. 3D hierarchical scaffolds enabled by a post-patternable, reconfigurable, and biocompatible 2D vitrimer film for tissue engineering applications. J Mater Chem B 2019. [DOI: 10.1039/c9tb00221a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A mechanically tissue-like, biocompatible vitrimer yields 3D hierarchical tissue engineering scaffolds via hot embossing patterning and additional reconfiguration processes.
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Affiliation(s)
- Na Kyung Kim
- School of Chemical and Biological Engineering, and Institute of Chemical Processes
- Seoul National University
- Seoul 08826
- Republic of Korea
| | - Eun Jung Cha
- Advanced Materials Division, Korea Research Institute of Chemical Technology
- Daejeon 34114
- Republic of Korea
| | - Mungyo Jung
- School of Chemical and Biological Engineering, and Institute of Chemical Processes
- Seoul National University
- Seoul 08826
- Republic of Korea
| | - Jinseok Kim
- School of Chemical and Biological Engineering, and Institute of Chemical Processes
- Seoul National University
- Seoul 08826
- Republic of Korea
| | - Gun-Jae Jeong
- School of Chemical and Biological Engineering, and Institute of Chemical Processes
- Seoul National University
- Seoul 08826
- Republic of Korea
| | - Yong Seok Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology
- Daejeon 34114
- Republic of Korea
| | - Woo Jin Choi
- Chemical Materials Solutions Center
- Korea Research Institute of Chemical Technology
- Daejeon 34114
- Republic of Korea
| | - Byung-Soo Kim
- School of Chemical and Biological Engineering, and Institute of Chemical Processes
- Seoul National University
- Seoul 08826
- Republic of Korea
| | - Dong-Gyun Kim
- Advanced Materials Division, Korea Research Institute of Chemical Technology
- Daejeon 34114
- Republic of Korea
| | - Jong-Chan Lee
- School of Chemical and Biological Engineering, and Institute of Chemical Processes
- Seoul National University
- Seoul 08826
- Republic of Korea
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Lee M, Choi WJ, Han SH, Jang J, Lee JW. Uncontrolled diabetes as a potential risk factor in tibiotalocalcaneal fusion using a retrograde intramedullary nail. Foot Ankle Surg 2018; 24:542-548. [PMID: 29409267 DOI: 10.1016/j.fas.2017.07.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 02/16/2017] [Revised: 06/04/2017] [Accepted: 07/06/2017] [Indexed: 02/04/2023]
Abstract
BACKGROUND Tibiotalocalcaneal (TTC) fusion using a retrograde intramedullary (IM) nail is an effective salvage option for terminal-stage hindfoot problems. However, as many patients who receive TTC fusion bear unfavorable medical comorbidities, the risk of nonunion, infection and other complications increases. This study was performed to identify the factors influencing outcomes after TTC fusion using a retrograde IM nail. METHODS Between September 2008 and February 2012, 34 consecutive patients received TTC fusion using a retrograde IM nail for limb salvage. All patients had a minimum follow-up of two years. Throughout follow-up, standard ankle radiography was performed along with clinical outcome assessment using a visual analog scale (VAS) for pain, the American Orthopaedic Foot and Ankle Society Ankle-Hind Foot Scale (AOFAS A/H scale) and the Foot and Ankle Outcome Score (FAOS). For the retrospective analysis, demographic factors, preoperative medical status, laboratory markers, and etiology were comprehensively reviewed using medical records. The success of the index operation was determined using clinical and radiological outcomes. Finally, the effect of each factor on failure after the operation was analyzed using univariate logistic regression. RESULTS In a mean of seven months, 82% (28/34) achieved union, as evaluated by standard radiography. All clinical outcome parameters improved significantly after the operation, including VAS, AOFAS A/H scale, and FAOS (P<0.001). At the last follow-up, five cases of nonunion with less than AOFAS A/H scale of 80 and two cases of below knee amputation due to uncontrolled infection were determined to be failures. None of the factors (etiology, demographics, laboratory markers and medical status) significantly influenced failures. However, uncontrolled DM significantly increased the failure rate with an odds ratio of 10 (P=0.029). CONCLUSIONS TTC fusion with a retrograde intramedullary nail is a successful treatment for complicated hindfoot problems such as traumatic osteoarthritis, Charcot arthropathy and failed TAA. However, it should be used judiciously in patients with uncontrolled DM, as the risk of failure increases. DESIGN Retrospective cohort study.
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Affiliation(s)
- Moses Lee
- Department of Orthopaedic Surgery, Gwangmyeong Sungae Hospital, Republic of Korea
| | - Woo Jin Choi
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, Republic of Korea
| | - Seung Hwan Han
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, Republic of Korea
| | - Jinyoung Jang
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, Republic of Korea
| | - Jin Woo Lee
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, Republic of Korea.
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Lee KM, Park KH, Hwang JS, Lee M, Yoon DS, Ryu HA, Jung HS, Park KW, Kim J, Park SW, Kim SH, Chun YM, Choi WJ, Lee JW. Inhibition of STAT5A promotes osteogenesis by DLX5 regulation. Cell Death Dis 2018; 9:1136. [PMID: 30429452 PMCID: PMC6235898 DOI: 10.1038/s41419-018-1184-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [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: 06/01/2018] [Revised: 09/19/2018] [Accepted: 10/24/2018] [Indexed: 12/13/2022]
Abstract
The regulation of osteogenesis is important for bone formation and fracture healing. Despite advances in understanding the molecular mechanisms of osteogenesis, crucial modulators in this process are not well-characterized. Here we demonstrate that suppression of signal transducer and activator of transcription 5A (STAT5A) activates distal-less homeobox 5 (DLX5) in human bone marrow-derived stromal cells (hBMSCs) and enhances osteogenesis in vitro and in vivo. We show that STAT5A negatively regulates expression of Dlx5 in vitro and that STAT5A deletion results in increased trabecular and cortical bone mass and bone mineral density in mice. Additionally, STAT5A deletion prevents age-related bone loss. In a murine fracture model, STAT5A deletion was found to significantly enhance bone remodeling by stimulating the formation of a fracture callus. Our findings indicate that STAT5A inhibition enhances bone formation by promoting osteogenesis of BMSCs.
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Affiliation(s)
- Kyoung-Mi Lee
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, 50-1 Yonsei -ro, Seodaemun-gu, Seoul, 03722, South Korea.,Severance Biomedical Science Institute, Yonsei University College of Medicine, 50-1 Yonsei -ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Kwang Hwan Park
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, 50-1 Yonsei -ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Ji Suk Hwang
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, 50-1 Yonsei -ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Moses Lee
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, 50-1 Yonsei -ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Dong Suk Yoon
- Department of Internal Medicine, Brody School of Medicine at East Carolina University, Greenville, NC, 27834, USA
| | - Hyun Aae Ryu
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, 50-1 Yonsei -ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Ho Sun Jung
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, 50-1 Yonsei -ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Ki Won Park
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, 50-1 Yonsei -ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Jihyun Kim
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, 50-1 Yonsei -ro, Seodaemun-gu, Seoul, 03722, South Korea.,Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Sahng Wook Park
- Department of Biochemistry and Molecular Biology, Institute of Genetic Science, Integrated Genomic Research Center for Metabolic Regulation, Yonsei University College of Medicine, 50-1 Yonsei -ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Sung-Hwan Kim
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, 50-1 Yonsei -ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Yong-Min Chun
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, 50-1 Yonsei -ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Woo Jin Choi
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, 50-1 Yonsei -ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Jin Woo Lee
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, 50-1 Yonsei -ro, Seodaemun-gu, Seoul, 03722, South Korea. .,Severance Biomedical Science Institute, Yonsei University College of Medicine, 50-1 Yonsei -ro, Seodaemun-gu, Seoul, 03722, South Korea. .,Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea.
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48
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Suh JW, Lee JW, Park JY, Choi WJ, Han SH. Posterior Fibular Groove Deepening Procedure With Low-Profile Screw Fixation of Fibrocartilaginous Flap for Chronic Peroneal Tendon Dislocation. J Foot Ankle Surg 2018; 57:478-483. [PMID: 29269024 DOI: 10.1053/j.jfas.2017.10.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [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: 01/03/2017] [Indexed: 02/03/2023]
Abstract
Chronic peroneal tendon dislocation is an uncommon disorder that frequently presents with concomitant pathology. Posterior fibular groove deepening and retinaculum repair have been increasing in popularity for treatment of peroneal tendon dislocations. The purpose of the present study was to introduce a posterior fibular groove deepening procedure using low-profile snap-off screws to securely and simply fix the fibrocartilaginous flap to facilitate faster rehabilitation and to assess the clinical outcomes of patients with chronic peroneal tendon dislocation and associated pathologic features. In the present retrospective case series, 34 ankles in 34 patients underwent the fibular groove deepening procedure using low-profile screws with superior peroneal retinaculum repair. The clinical outcomes were evaluated using the American Orthopaedic Foot and Ankle Society (AOFAS) ankle-hindfoot scale and patient subjective satisfaction rate. The time of return to recreational and sports activities was also assessed. Weightbearing ankle radiographs were evaluated to assess the stability of the flap by checking the screws. The mean follow-up period was 47.96 (range 12 to 142) months. The mean AOFAS scale score for all patients improved from 69.96 ± 13.14 to 87.72 ± 10.13 at the last follow-up examination (p < .001). Overall, 85.3% of patients subjectively rated their operative outcomes as excellent or good. The 18 (52.9%) patients with an isolated peroneal tendon dislocation had a faster return to recreational or sports activities than the 16 (47.1%) patients with concomitant pathologic features (2.95 ± 0.19 versus 4.14 ± 1.34 months; p = .002). No patient experienced residual dislocation, screw loosening, or irritation from the screws. The fibular groove deepening procedure using low-profile screws is be a simple procedure that offers rigid fixation. This leads to relatively fast rehabilitation and resumption of recreational or sports activities.
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Affiliation(s)
- Jae Wan Suh
- Assistant Professor, Department of Orthopaedic Surgery, Dankook University Hospital, Cheonan, Republic of Korea; Graduate Student, Department of Orthopaedic Surgery, Graduate School of Medicine, Yonsei University, Seoul, Republic of Korea
| | - Jin Woo Lee
- Professor, Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jun Young Park
- Resident, Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Woo Jin Choi
- Associate Professor, Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Seung Hwan Han
- Associate Professor, Department of Orthopaedic Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea.
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Park J, Lim HK, Choi JH, Choi WJ, Lee J, Lee KH. Suspected abdominal compartment syndrome during endoscopic diskectomy - A case report -. Anesth Pain Med (Seoul) 2018. [DOI: 10.17085/apm.2018.13.3.319] [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] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- Jihyoung Park
- Department of Anesthesiology and Pain Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Hyun Kyo Lim
- Department of Anesthesiology and Pain Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - June Ho Choi
- Department of Anesthesiology and Pain Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Woo Jin Choi
- Department of Anesthesiology and Pain Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Jaemoon Lee
- Department of Anesthesiology and Pain Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Kwang Ho Lee
- Department of Anesthesiology and Pain Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
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Park KH, Hwang Y, Han SH, Park YJ, Shim DW, Choi WJ, Lee JW. Primary Versus Secondary Osteochondral Autograft Transplantation for the Treatment of Large Osteochondral Lesions of the Talus. Am J Sports Med 2018. [PMID: 29537877 DOI: 10.1177/0363546518758014] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [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] [Indexed: 01/31/2023]
Abstract
BACKGROUND Recent studies have reported promising clinical results after osteochondral autograft transplantation (OAT) for the treatment of large osteochondral lesions of the talus (OLT). However, no study has yet compared clinical outcomes between primary and secondary OAT for large OLT. PURPOSE To compare clinical outcomes among patients with large OLT who receive primary OAT versus those who receive secondary OAT after failure of marrow stimulation and to identify factors associated with clinical failure. STUDY DESIGN Cohort study; Level of evidence, 3. METHODS From 2005 to 2014, 46 patients with large OLT (≥150 mm2) underwent OAT: 18 underwent OAT as initial surgical management (primary OAT group), and 28 patients underwent secondary OAT after failure of previous arthroscopic marrow stimulation (secondary OAT group). In both groups, OAT procedures included arthroscopic inspection and debridement of concomitant soft tissue injuries. Clinical outcomes were assessed using pain visual analog scale (VAS), the Roles and Maudsley score, Foot and Ankle Outcome Scores (FAOS), and revisional surgery rates. Factors associated with clinical failures were evaluated using bivariate and logistic regression analyses. Survival outcomes were compared using Kaplan-Meier analysis. RESULTS Mean follow-up time was 6 years (range, 2-10.8 years). Mean lesion size was 194.9 mm2 (range, 151.7-296.3 mm2). There were no significant differences between groups in patient demographics and preoperative findings. Postoperative pain VAS, Roles and Maudsley score, FAOS, and revisional surgery rates were not significantly different at last follow-up. Prior marrow stimulation was not significantly associated with clinical failure on bivariate analysis. Lesion size greater than 225 mm2 on preoperative magnetic resonance imaging was significantly associated with clinical failure. Survival probabilities from Kaplan-Meier plots were not significantly different between the primary and secondary OAT groups ( P = .947). CONCLUSION Clinical outcomes of patients with large OLT treated with secondary OAT after failed marrow stimulation were found to be comparable with those who were treated with primary OAT. These results may be helpful to orthopaedic surgeons deciding appropriate surgical options for patients with large OLT.
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Affiliation(s)
- Kwang Hwan Park
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Yeokgu Hwang
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Seung Hwan Han
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Yoo Jung Park
- Department of Orthopaedic Surgery, Wonju College of Medicine, Yonsei University, Wonju, Republic of Korea
| | - Dong Woo Shim
- Department of Orthopaedic Surgery, International St. Mary's Hospital, Catholic Kwandong University College of Medicine, Incheon, Republic of Korea
| | - Woo Jin Choi
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jin Woo Lee
- Department of Orthopaedic Surgery, Yonsei University College of Medicine, Seoul, Republic of Korea
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