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Ko J, Tsao A, Kim R, Perry C, Oyoyo U, Kwon SR. Effect of Various Toothpaste Tablets on Gloss and Surface Roughness of Resin-based Composite Materials. Oper Dent 2024:500014. [PMID: 38632854 DOI: 10.2341/23-120-l] [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] [Accepted: 10/23/2023] [Indexed: 04/19/2024]
Abstract
OBJECTIVES To evaluate the effect of various toothpaste tablets on gloss and surface roughness of resin-based composite. METHODS AND MATERIALS Sixty-four resin-based composite specimens were divided into four groups of 16 specimens each. Gloss and roughness were measured before and after simulated brushing with three types of toothpaste tablets and one conventional toothpaste: CT: Chewtab Toothpaste Tablets; AT: Anticavity Toothpaste Tablets; HC: Charcoal Toothpaste Tablets; CP: Cavity Protection toothpaste. The Kruskal- Wallis procedure was performed to compare the differences by groups. Post-hoc comparisons were conducted with Bonferroni corrections (α=0.05). RESULTS There was a significant drop in gloss for all groups. CT and AT maintained the highest gloss with means of 81.6 GU and 74.1 GU, respectively. The lowest gloss of 24.5 GU was observed for HC. There was a significant increase in roughness for all groups except for CT. CT had the lowest roughness with a mean of 0.034 μm, while HC had the highest roughness with a mean of 0.074 μm. There was a significant correlation between post-brushing gloss and post-brushing roughness (p<0.001, r=-0.884). CONCLUSION Chewtab Toothpaste Tablets had the least effect on gloss and roughness, while Charcoal Toothpaste Tablets had the most negative effect on the surface properties of resin-based composites.
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Affiliation(s)
- J Ko
- Julia Ko, BSc, Department of Biomedical Science La Sierra University, Riverside, CA, USA
| | - A Tsao
- Adam Tsao, BSc, Department of Biomedical Science La Sierra University, Riverside, CA, USA
| | - R Kim
- Raymond Kim, BSc, Department of Biomedical Science La Sierra University, Riverside, CA, USA
| | - C Perry
- Christopher Perry, PhD, Department of Biochemistry, Loma Linda University School of Medicine, Loma Linda, CA, USA
| | - U Oyoyo
- Udochukwu Oyoyo, MPH, Dental Education Services, Loma Linda University School of Dentistry, Loma Linda, CA, USA
| | - S R Kwon
- *So Ran Kwon, DDS, MS, PhD, MS, professor, Division of General Dentistry, Loma Linda University School of Dentistry, Loma Linda, CA, USA
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Jung J, Han J, Han JM, Ko J, Yoon J, Hwang JS, Park JI, Hwang G, Jung JH, Hwang DDJ. Prediction of neovascular age-related macular degeneration recurrence using optical coherence tomography images with a deep neural network. Sci Rep 2024; 14:5854. [PMID: 38462646 PMCID: PMC10925587 DOI: 10.1038/s41598-024-56309-6] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Accepted: 03/05/2024] [Indexed: 03/12/2024] Open
Abstract
Neovascular age-related macular degeneration (nAMD) can result in blindness if left untreated, and patients often require repeated anti-vascular endothelial growth factor injections. Although, the treat-and-extend method is becoming popular to reduce vision loss attributed to recurrence, it may pose a risk of overtreatment. This study aimed to develop a deep learning model based on DenseNet201 to predict nAMD recurrence within 3 months after confirming dry-up 1 month following three loading injections in treatment-naïve patients. A dataset of 1076 spectral domain optical coherence tomography (OCT) images from 269 patients diagnosed with nAMD was used. The performance of the model was compared with that of 6 ophthalmologists, using 100 randomly selected samples. The DenseNet201-based model achieved 53.0% accuracy in predicting nAMD recurrence using a single pre-injection image and 60.2% accuracy after viewing all the images immediately after the 1st, 2nd, and 3rd injections. The model outperformed experienced ophthalmologists, with an average accuracy of 52.17% using a single pre-injection image and 53.3% after examining four images before and after three loading injections. In conclusion, the artificial intelligence model demonstrated a promising ability to predict nAMD recurrence using OCT images and outperformed experienced ophthalmologists. These findings suggest that deep learning models can assist in nAMD recurrence prediction, thus improving patient outcomes and optimizing treatment strategies.
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Affiliation(s)
- Juho Jung
- Department of Applied Artificial Intelligence, Sungkyunkwan University, Seoul, Korea
| | - Jinyoung Han
- Department of Applied Artificial Intelligence, Sungkyunkwan University, Seoul, Korea
- Department of Human-Artificial Intelligence Interaction, Sungkyunkwan University, Seoul, Korea
| | - Jeong Mo Han
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
- Kong Eye Center, Seoul, Korea
| | | | | | | | - Ji In Park
- Department of Medicine, Kangwon National University Hospital, Kangwon National University School of Medicine, Chuncheon, Gangwon-do, Korea
| | - Gyudeok Hwang
- Department of Ophthalmology, Hangil Eye Hospital, 35 Bupyeong-Daero, Bupyeong-gu, Incheon, 21388, Korea
| | - Jae Ho Jung
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
| | - Daniel Duck-Jin Hwang
- Department of Ophthalmology, Hangil Eye Hospital, 35 Bupyeong-Daero, Bupyeong-gu, Incheon, 21388, Korea.
- Department of Ophthalmology, Catholic Kwandong University College of Medicine, Incheon, Korea.
- Lux Mind, Incheon, Korea.
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3
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Yoon J, Han J, Ko J, Choi S, Park JI, Hwang JS, Han JM, Hwang DDJ. Developing and Evaluating an AI-Based Computer-Aided Diagnosis System for Retinal Disease: Diagnostic Study for Central Serous Chorioretinopathy. J Med Internet Res 2023; 25:e48142. [PMID: 38019564 PMCID: PMC10719821 DOI: 10.2196/48142] [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: 04/14/2023] [Revised: 10/29/2023] [Accepted: 11/05/2023] [Indexed: 11/30/2023] Open
Abstract
BACKGROUND Although previous research has made substantial progress in developing high-performance artificial intelligence (AI)-based computer-aided diagnosis (AI-CAD) systems in various medical domains, little attention has been paid to developing and evaluating AI-CAD system in ophthalmology, particularly for diagnosing retinal diseases using optical coherence tomography (OCT) images. OBJECTIVE This diagnostic study aimed to determine the usefulness of a proposed AI-CAD system in assisting ophthalmologists with the diagnosis of central serous chorioretinopathy (CSC), which is known to be difficult to diagnose, using OCT images. METHODS For the training and evaluation of the proposed deep learning model, 1693 OCT images were collected and annotated. The data set included 929 and 764 cases of acute and chronic CSC, respectively. In total, 66 ophthalmologists (2 groups: 36 retina and 30 nonretina specialists) participated in the observer performance test. To evaluate the deep learning algorithm used in the proposed AI-CAD system, the training, validation, and test sets were split in an 8:1:1 ratio. Further, 100 randomly sampled OCT images from the test set were used for the observer performance test, and the participants were instructed to select a CSC subtype for each of these images. Each image was provided under different conditions: (1) without AI assistance, (2) with AI assistance with a probability score, and (3) with AI assistance with a probability score and visual evidence heatmap. The sensitivity, specificity, and area under the receiver operating characteristic curve were used to measure the diagnostic performance of the model and ophthalmologists. RESULTS The proposed system achieved a high detection performance (99% of the area under the curve) for CSC, outperforming the 66 ophthalmologists who participated in the observer performance test. In both groups, ophthalmologists with the support of AI assistance with a probability score and visual evidence heatmap achieved the highest mean diagnostic performance compared with that of those subjected to other conditions (without AI assistance or with AI assistance with a probability score). Nonretina specialists achieved expert-level diagnostic performance with the support of the proposed AI-CAD system. CONCLUSIONS Our proposed AI-CAD system improved the diagnosis of CSC by ophthalmologists, which may support decision-making regarding retinal disease detection and alleviate the workload of ophthalmologists.
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Affiliation(s)
- Jeewoo Yoon
- Department of Applied Artificial Intelligence, Sungkyunkwan University, Seoul, Republic of Korea
- Raondata, Seoul, Republic of Korea
| | - Jinyoung Han
- Department of Applied Artificial Intelligence, Sungkyunkwan University, Seoul, Republic of Korea
- Department of Human-Artificial Intelligence Interaction, Sungkyunkwan University, Seoul, Republic of Korea
| | - Junseo Ko
- Department of Applied Artificial Intelligence, Sungkyunkwan University, Seoul, Republic of Korea
- Raondata, Seoul, Republic of Korea
| | - Seong Choi
- Department of Applied Artificial Intelligence, Sungkyunkwan University, Seoul, Republic of Korea
- Raondata, Seoul, Republic of Korea
| | - Ji In Park
- Department of Medicine, Kangwon National University School of Medicine, Kangwon National University Hospital, Chuncheon, Republic of Korea
| | | | - Jeong Mo Han
- Seoul Bombit Eye Clinic, Sejong, Republic of Korea
| | - Daniel Duck-Jin Hwang
- Department of Ophthalmology, Hangil Eye Hospital, Incheon, Republic of Korea
- Lux Mind, Incheon, Republic of Korea
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Kim Y, Ko J, Byun J, Seo J, Park B. Passivation effect on Cd 0.95Mn 0.05Te 0.98Se 0.02 radiation detection performance. Appl Radiat Isot 2023; 200:110914. [PMID: 37423060 DOI: 10.1016/j.apradiso.2023.110914] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 06/25/2023] [Accepted: 06/25/2023] [Indexed: 07/11/2023]
Abstract
CdTe-based detectors have the problem of Te-rich surface layers caused by Br etching, which is one of fabrication steps. Te-rich layer acts as a trapping center and serves as an additional source of charge carriers, thereby degrading transport property of charge carriers and enriching leakage current on surface of detector. To solve this problem, we introduced sodium hypochlorite (NaOCl) as a passivant, and investigated its effect on Cd0.95Mn0.05Te0.98Se0.02 (CMTS), by analyzing chemical state of surface and its performance. After passivation with NaOCl, the results of X-ray photoelectron spectroscopy (XPS) shows the formation of tellurium oxide and elimination of water on CMTS surface, and CMTS presented enhanced performance with Am-241 radioisotope. Consequently, it is demonstrated that the passivation with NaOCl reduces leakage current, compensates defect, and elevates transport of charge carriers, thereby decreasing charge loss of carriers and improving performance of CMTS detector.
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Affiliation(s)
- Y Kim
- Marine Radioactivity Monitoring Group, Korea Marine Environment Management Corporation, Busan 48931, Republic of Korea; Interdisciplinary Program in Precision Public Health, Korea university, Seoul 02841, Republic of Korea
| | - J Ko
- Department of Chemistry, Konkuk University, Seoul 05029, Republic of Korea
| | - J Byun
- Interdisciplinary Program in Precision Public Health, Korea university, Seoul 02841, Republic of Korea; Department of Health and Safety Convergence Science, Korea university, Seoul 02841, Republic of Korea
| | - J Seo
- Interdisciplinary Program in Precision Public Health, Korea university, Seoul 02841, Republic of Korea; Department of Health and Safety Convergence Science, Korea university, Seoul 02841, Republic of Korea
| | - B Park
- Interdisciplinary Program in Precision Public Health, Korea university, Seoul 02841, Republic of Korea; Department of Health and Safety Convergence Science, Korea university, Seoul 02841, Republic of Korea; Advanced Crystal Material/Device Research Center, Konkuk University, Seoul 143-701, Republic of Korea.
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5
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Murillo C, Ko J, Moore G, Weil A, Kreuzer M. Using Sedline® Brain function monitor to evaluate electroencephalographic changes during propofol anesthesia in young healthy dogs. Vet Anaesth Analg 2023. [DOI: 10.1016/j.vaa.2022.09.020] [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: 01/19/2023]
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Shin LJ, Koenig LR, Ko J, Upadhyay UD. P030Interest in rh testing and rho(d) immune globulin received among patients obtaining first-trimester medication abortion through virtual clinics. Contraception 2022. [DOI: 10.1016/j.contraception.2022.09.055] [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: 11/19/2022]
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Na B, Kang J, Lee M, Jung L, Hahn S, Yoo J, Jeong J, Ko J, Sung C. Experimental and numerical evaluation of the neutral beam deposition profile in KSTAR. Fusion Engineering and Design 2022. [DOI: 10.1016/j.fusengdes.2022.113320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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8
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Upadhyay UD, Koenig LR, Ko J, Sietstra C, Biggs MA. P098Interest in late period pills in the US: A nationally representative survey. Contraception 2022. [DOI: 10.1016/j.contraception.2022.09.122] [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: 11/19/2022]
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9
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Koenig LR, Ko J, Valladares E, Coeytaux F, Wells E, Lyles C, Upadhyay UD. P033Patient acceptability of asynchronous vs synchronous telehealth medication abortion care in the US. Contraception 2022. [DOI: 10.1016/j.contraception.2022.09.058] [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: 11/19/2022]
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10
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Upadhyay UD, Koenig LR, Ko J, Valladares E, Meckstroth K, Biggs MA. O03Safety and effectiveness of synchronous and asynchronous telehealth medication abortion provided by us virtual clinics. Contraception 2022. [DOI: 10.1016/j.contraception.2022.09.008] [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: 11/19/2022]
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11
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Hendrickse A, Ko J, Sakai T. The care of donors and recipients in adult living donor liver transplantation. BJA Educ 2022; 22:387-395. [PMID: 36132878 PMCID: PMC9482866 DOI: 10.1016/j.bjae.2022.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/22/2022] [Indexed: 11/17/2022] Open
Affiliation(s)
- A. Hendrickse
- University of Colorado, Anschutz Medical Campus, Aurora, CO, USA
| | - J. Ko
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - T. Sakai
- UPMC (University of Pittsburgh Medical Center), Pittsburgh, PA, USA
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van Egmond S, Cai Z, Nava V, Rapaport B, Ko J, Chiou A, Sarin K, Tang J, Bousheri S, Zhang L, Linos E. 349 Development of a digital tool for home-based monitoring of skin disease for older adults. J Invest Dermatol 2022. [PMCID: PMC9296962 DOI: 10.1016/j.jid.2022.05.358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Beck L, Boguniewicz M, Hata T, Fuxench Z, Simpson E, De Benedetto A, Ko J, Ong P, Yoshida T, Gallo R, Lussier S, David G, Schlievert P, Gill S, Rudman Spergel A, Leung D. 519 Rapid reduction in S. aureus & cytotoxins in dupilumab treated atopic dermatitis subjects. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.529] [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: 10/17/2022]
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14
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Han J, Choi S, Park JI, Hwang JS, Han JM, Lee HJ, Ko J, Yoon J, Hwang DDJ. Classifying neovascular age-related macular degeneration with a deep convolutional neural network based on optical coherence tomography images. Sci Rep 2022; 12:2232. [PMID: 35140257 PMCID: PMC8828755 DOI: 10.1038/s41598-022-05903-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 09/03/2021] [Accepted: 01/17/2022] [Indexed: 12/27/2022] Open
Abstract
Neovascular age-related macular degeneration (nAMD) is among the main causes of visual impairment worldwide. We built a deep learning model to distinguish the subtypes of nAMD using spectral domain optical coherence tomography (SD-OCT) images. Data from SD-OCT images of nAMD (polypoidal choroidal vasculopathy, retinal angiomatous proliferation, and typical nAMD) and normal healthy patients were analyzed using a convolutional neural network (CNN). The model was trained and validated based on 4749 SD-OCT images from 347 patients and 50 healthy controls. To adopt an accurate and robust image classification architecture, we evaluated three well-known CNN structures (VGG-16, VGG-19, and ResNet) and two customized classification layers (fully connected layer with dropout vs. global average pooling). Following the test set performance, the model with the highest classification accuracy was used. Transfer learning and data augmentation were applied to improve the robustness and accuracy of the model. Our proposed model showed an accuracy of 87.4% on the test data (920 images), scoring higher than ten ophthalmologists, for the same data. Additionally, the part that our model judged to be important in classification was confirmed through Grad-CAM images, and consequently, it has a similar judgment criteria to that of ophthalmologists. Thus, we believe that our model can be used as an auxiliary tool in clinical practice.
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Affiliation(s)
- Jinyoung Han
- Department of Applied Artificial Intelligence, Sungkyunkwan University, Seoul, Korea.,RAON DATA, Seoul, Korea
| | - Seong Choi
- Department of Applied Artificial Intelligence, Sungkyunkwan University, Seoul, Korea.,RAON DATA, Seoul, Korea
| | - Ji In Park
- Department of Medicine, Kangwon National University Hospital, Kangwon National University School of Medicine, Chuncheon, Gangwon-do, South Korea
| | | | | | - Hak Jun Lee
- Department of Ophthalmology, Hangil Eye Hospital, 35 Bupyeong-daero, Bupyeong-gu, Incheon, 21388, Korea
| | - Junseo Ko
- Department of Applied Artificial Intelligence, Sungkyunkwan University, Seoul, Korea.,RAON DATA, Seoul, Korea
| | - Jeewoo Yoon
- Department of Applied Artificial Intelligence, Sungkyunkwan University, Seoul, Korea.,RAON DATA, Seoul, Korea
| | - Daniel Duck-Jin Hwang
- Department of Ophthalmology, Hangil Eye Hospital, 35 Bupyeong-daero, Bupyeong-gu, Incheon, 21388, Korea. .,Lux Mind, Incheon, Korea. .,Department of Ophthalmology, Catholic Kwandong University College of Medicine, Incheon, Korea.
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15
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Ko J, Han J, Yoon J, Park JI, Hwang JS, Han JM, Park KH, Hwang DDJ. Assessing central serous chorioretinopathy with deep learning and multiple optical coherence tomography images. Sci Rep 2022; 12:1831. [PMID: 35115577 PMCID: PMC8814130 DOI: 10.1038/s41598-022-05051-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 08/17/2021] [Accepted: 12/30/2021] [Indexed: 12/03/2022] Open
Abstract
Central serous chorioretinopathy (CSC) is one of the most common macular diseases that can reduce the quality of life of patients. This study aimed to build a deep learning-based classification model using multiple spectral domain optical coherence tomography (SD-OCT) images together to diagnose CSC. Our proposed system contains two modules: single-image prediction (SIP) and a final decision (FD) classifier. A total of 7425 SD-OCT images from 297 participants (109 acute CSC, 106 chronic CSC, 82 normal) were included. In the fivefold cross validation test, our model showed an average accuracy of 94.2%. Compared to other end-to-end models, for example, a 3D convolutional neural network (CNN) model and a CNN-long short-term memory (CNN-LSTM) model, the proposed system showed more than 10% higher accuracy. In the experiments comparing the proposed model and ophthalmologists, our model showed higher accuracy than experts in distinguishing between acute, chronic, and normal cases. Our results show that an automated deep learning-based model could play a supplementary role alongside ophthalmologists in the diagnosis and management of CSC. In particular, the proposed model seems clinically applicable because it can classify CSCs using multiple OCT images simultaneously.
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Affiliation(s)
- Junseo Ko
- Department of Applied Artificial Intelligence, Sungkyunkwan University, Seoul, Korea.,RAON DATA, Seoul, Korea
| | - Jinyoung Han
- Department of Applied Artificial Intelligence, Sungkyunkwan University, Seoul, Korea.,RAON DATA, Seoul, Korea.,Lux Mind, Incheon, Korea
| | - Jeewoo Yoon
- Department of Applied Artificial Intelligence, Sungkyunkwan University, Seoul, Korea.,RAON DATA, Seoul, Korea
| | - Ji In Park
- Department of Medicine, Kangwon National University Hospital, Kangwon National University School of Medicine, Chuncheon, Gangwon-do, South Korea
| | | | | | - Kyu Hyung Park
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Daniel Duck-Jin Hwang
- Lux Mind, Incheon, Korea. .,Department of Ophthalmology, Hangil Eye Hospital, 35 Bupyeong-daero, Bupyeong-gu, Incheon, 21388, Korea. .,Department of Ophthalmology, Catholic Kwandong University College of Medicine, Incheon, Korea.
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Witonsky J, Elhawary J, Huang P, Holweg C, Millette L, Ko J, Raut P, Borrell L, Burchard E. P074 OMALIZUMAB IS EFFICACIOUS IN CHILDREN WITH ALLERGIC ASTHMA FROM DIFFERENT RACIAL BACKGROUNDS. Ann Allergy Asthma Immunol 2021. [DOI: 10.1016/j.anai.2021.08.103] [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: 11/30/2022]
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17
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King B, Kwon O, Mesinkovska N, Ko J, Dutronc Y, Wu W, McCollam J, Yu G, Holzwarth K, DeLozier A, Hordinsky M. LB785 Efficacy and safety of baricitinib in adults with Alopecia Areata: Phase 3 results from a randomized controlled trial (BRAVE-AA1). J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.07.049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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18
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Faletsky A, Han J, Li S, Lee K, Soliman Y, Stephens M, Ko J, Mostaghimi A. 396 Dermatology consent form readability: A barrier to comprehension and inclusivity. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.419] [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: 10/21/2022]
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19
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Beck L, Boguniewicz M, Hatta T, Chiesa Fuxench Z, Simpson E, De Benedetto A, Ko J, Ong P, Yoshida T, Gallo R, Schlievert P, Gill S, Mosmann T, Berdyshev E, David G, Lussier S, Rudman Spergel A, Leung D. 666 Effect of dupilumab on the host-microbe interface in atopic dermatitis. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.02.696] [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: 11/29/2022]
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20
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Hwang DDJ, Choi S, Ko J, Yoon J, Park JI, Hwang JS, Han JM, Lee HJ, Sohn J, Park KH, Han J. Distinguishing retinal angiomatous proliferation from polypoidal choroidal vasculopathy with a deep neural network based on optical coherence tomography. Sci Rep 2021; 11:9275. [PMID: 33927240 PMCID: PMC8085229 DOI: 10.1038/s41598-021-88543-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 04/05/2021] [Indexed: 11/26/2022] Open
Abstract
This cross-sectional study aimed to build a deep learning model for detecting neovascular age-related macular degeneration (AMD) and to distinguish retinal angiomatous proliferation (RAP) from polypoidal choroidal vasculopathy (PCV) using a convolutional neural network (CNN). Patients from a single tertiary center were enrolled from January 2014 to January 2020. Spectral-domain optical coherence tomography (SD-OCT) images of patients with RAP or PCV and a control group were analyzed with a deep CNN. Sensitivity, specificity, accuracy, and area under the receiver operating characteristic curve (AUROC) were used to evaluate the model's ability to distinguish RAP from PCV. The performances of the new model, the VGG-16, Resnet-50, Inception, and eight ophthalmologists were compared. A total of 3951 SD-OCT images from 314 participants (229 AMD, 85 normal controls) were analyzed. In distinguishing the PCV and RAP cases, the proposed model showed an accuracy, sensitivity, and specificity of 89.1%, 89.4%, and 88.8%, respectively, with an AUROC of 95.3% (95% CI 0.727-0.852). The proposed model showed better diagnostic performance than VGG-16, Resnet-50, and Inception-V3 and comparable performance with the eight ophthalmologists. The novel model performed well when distinguishing between PCV and RAP. Thus, automated deep learning systems may support ophthalmologists in distinguishing RAP from PCV.
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Affiliation(s)
- Daniel Duck-Jin Hwang
- Department of Ophthalmology, Hangil Eye Hospital, 35 Bupyeong-daero, Bupyeong-gu, Incheon, 21388, South Korea.
- Department of Ophthalmology, Catholic Kwandong University College of Medicine, Incheon, South Korea.
| | - Seong Choi
- Department of Applied Artificial Intelligence, Sungkyunkwan University, 25-2, Sungkyunkwan-ro, Jongno-gu, Seoul, 03063, South Korea
- RAON DATA, Seoul, South Korea
| | - Junseo Ko
- Department of Applied Artificial Intelligence, Sungkyunkwan University, 25-2, Sungkyunkwan-ro, Jongno-gu, Seoul, 03063, South Korea
| | - Jeewoo Yoon
- Department of Applied Artificial Intelligence, Sungkyunkwan University, 25-2, Sungkyunkwan-ro, Jongno-gu, Seoul, 03063, South Korea
- RAON DATA, Seoul, South Korea
| | - Ji In Park
- Department of Medicine, Kangwon National University Hospital, Kangwon National University School of Medicine, Chuncheon, Gangwon-do, South Korea
| | | | | | - Hak Jun Lee
- Department of Ophthalmology, Hangil Eye Hospital, 35 Bupyeong-daero, Bupyeong-gu, Incheon, 21388, South Korea
| | - Joonhong Sohn
- Department of Ophthalmology, Hangil Eye Hospital, 35 Bupyeong-daero, Bupyeong-gu, Incheon, 21388, South Korea
| | - Kyu Hyung Park
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Jinyoung Han
- Department of Applied Artificial Intelligence, Sungkyunkwan University, 25-2, Sungkyunkwan-ro, Jongno-gu, Seoul, 03063, South Korea.
- RAON DATA, Seoul, South Korea.
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Yoo JW, Kim J, Lee MW, Kang J, Ko WH, Oh SG, Ko J, Lee JH, Nam YU, Jung L, Park BH, Yoon SW. Fast-ion D α spectroscopy diagnostic at KSTAR. Rev Sci Instrum 2021; 92:043504. [PMID: 34243446 DOI: 10.1063/5.0040559] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 03/10/2021] [Indexed: 06/13/2023]
Abstract
A fast-ion Dα (FIDA) diagnostics system was installed for core and edge measurements on KSTAR. This system has two tangential FIDA arrays that cover both blue- and redshifted Dα lines (cold: 656.09 nm) in active views along the neutral beam 1 A centerline. The spectral band is 647-662.5 nm, and it covers the Doppler shift of the emission from the maximum energy of the neutral beam (100 keV). A curved filter strip with a motorized stage adequately prevents saturation of the electron multiplying charge-coupled device signal by the cold Dα line from the plasma edge. From comparisons of the measured spectra and FIDASIM modeling code, the FIDA spectra are well matched quantitatively. Moreover, the first measurements show that the FIDA radiance agrees with the neutron rate in the time trace during external heating and perturbation. In addition, responses are observed in the core FIDA radiance during the edge-localized mode cycle.
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Affiliation(s)
- J W Yoo
- Korea Institute of Fusion Energy, 169-148 Gwahak-ro, Yuseong-gu, Daejeon 34133, Republic of Korea
| | - J Kim
- Korea Institute of Fusion Energy, 169-148 Gwahak-ro, Yuseong-gu, Daejeon 34133, Republic of Korea
| | - M W Lee
- Korea Institute of Fusion Energy, 169-148 Gwahak-ro, Yuseong-gu, Daejeon 34133, Republic of Korea
| | - J Kang
- Korea Institute of Fusion Energy, 169-148 Gwahak-ro, Yuseong-gu, Daejeon 34133, Republic of Korea
| | - W-H Ko
- Korea Institute of Fusion Energy, 169-148 Gwahak-ro, Yuseong-gu, Daejeon 34133, Republic of Korea
| | - S G Oh
- Ajou University, 206, World Cup-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16499, Republic of Korea
| | - J Ko
- Korea Institute of Fusion Energy, 169-148 Gwahak-ro, Yuseong-gu, Daejeon 34133, Republic of Korea
| | - J H Lee
- Korea Institute of Fusion Energy, 169-148 Gwahak-ro, Yuseong-gu, Daejeon 34133, Republic of Korea
| | - Y U Nam
- Korea Institute of Fusion Energy, 169-148 Gwahak-ro, Yuseong-gu, Daejeon 34133, Republic of Korea
| | - L Jung
- Korea Institute of Fusion Energy, 169-148 Gwahak-ro, Yuseong-gu, Daejeon 34133, Republic of Korea
| | - B H Park
- Korea Institute of Fusion Energy, 169-148 Gwahak-ro, Yuseong-gu, Daejeon 34133, Republic of Korea
| | - S W Yoon
- Korea Institute of Fusion Energy, 169-148 Gwahak-ro, Yuseong-gu, Daejeon 34133, Republic of Korea
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22
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Toner L, Proimos H, Scully T, Ko J, Koshy A, Lim H, Lin T, Farouque O. Delayed Recurrence of Atrial Fibrillation and Flutter in Patients Referred for Electrical Cardioversion: A 5-year Study in a Real-World Setting. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.142] [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: 11/26/2022]
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23
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Takahashi M, Shimokawa T, Ko J, Takeshima T, Yamashita H, Kajimoto Y, Mori A, Ito H. Efficacy and safety of istradefylline in Parkinson's disease patients with postural abnormality: results from a multicenter open-label study in Japan. Parkinsonism Relat Disord 2020. [DOI: 10.1016/j.parkreldis.2020.06.229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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24
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Lee J, Jang G, Kim J, Oh B, Kim DE, Lee S, Kim JH, Ko J, Min C, Shin S. Demonstration of a ring-FEL as an EUV lithography tool. J Synchrotron Radiat 2020; 27:864-869. [PMID: 33565994 DOI: 10.1107/s1600577520005676] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 04/22/2020] [Indexed: 06/12/2023]
Abstract
This paper presents the required structure and function of a ring-FEL as a radiation source for extreme ultraviolet radiation lithography (EUVL). A 100 m-long straight section that conducts an extremely low emittance beam from a fourth-generation storage ring can increase the average power at 13.5 nm wavelength to up to 1 kW without degrading the beam in the rest of the ring. Here, simulation results for a ring-FEL as a EUVL source are described.
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Affiliation(s)
- Jaeyu Lee
- Pohang Accelerator Laboratory, POSTECH, Pohang, Gyungbuk 37673, Republic of Korea
| | - G Jang
- Department of Physics, POSTECH, Pohang, Gyungbu 37673, Republic of Korea
| | - J Kim
- SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - B Oh
- Pohang Accelerator Laboratory, POSTECH, Pohang, Gyungbuk 37673, Republic of Korea
| | - D E Kim
- Pohang Accelerator Laboratory, POSTECH, Pohang, Gyungbuk 37673, Republic of Korea
| | - S Lee
- Pohang Accelerator Laboratory, POSTECH, Pohang, Gyungbuk 37673, Republic of Korea
| | - J H Kim
- Pohang Accelerator Laboratory, POSTECH, Pohang, Gyungbuk 37673, Republic of Korea
| | - J Ko
- Pohang Accelerator Laboratory, POSTECH, Pohang, Gyungbuk 37673, Republic of Korea
| | - C Min
- Pohang Accelerator Laboratory, POSTECH, Pohang, Gyungbuk 37673, Republic of Korea
| | - S Shin
- Pohang Accelerator Laboratory, POSTECH, Pohang, Gyungbuk 37673, Republic of Korea
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Wang W, Wilson C, Collum S, Bi W, Ko J, Rajagopal K, Karmouty-Quintana H. Beta Adrenoceptor Ligands for the Treatment of Group 3 Pulmonary Hypertension and Cor Pulmonale: A Novel Therapeutic Target? J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.731] [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: 10/24/2022] Open
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26
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Roblin S, Meninger S, Murray S, Karki C, Krautwurst K, Mustafina R, Ko J. A166 ANALYSIS OF SYMPTOMS, DIAGNOSTIC PATTERNS, AND CANADIAN PROVIDER PERSPECTIVE OF ACUTE HEPATIC PORPHYRIA. J Can Assoc Gastroenterol 2020. [DOI: 10.1093/jcag/gwz047.165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
Acute hepatic porphyria (AHP) is a family of rare genetic diseases, the most common being acute intermittent porphyria (AIP). AHP results from enzyme deficiencies involved in haem synthesis, leading to accumulation of neurotoxic haem intermediates, aminolaevulinic acid (ALA) and porphobilinogen (PBG), causing potentially life-threatening attacks and chronic symptoms. Patients afflicted by AHP often remain without a proper diagnosis for up to 15 years due to lack of awareness and testing. First-line diagnostic biochemical tests include measuring spot urinary ALA and PBG as both are elevated in the majority of AHP patients.
Aims
The study aimed to describe physicians experience diagnosing AHP and characterize patients globally, including Canada.
Methods
Physicians (n=175) who actively managed AHP patients (with and without recurrent attacks) in the preceding year were recruited from 9/2017–10/2017 to complete an online survey collecting information on demographics, familiarity with AHP and diagnostic tests, perspective on symptoms important to diagnosis, referral patterns, and treatment preferences. Physicians also completed a chart review of 546 patients and reported anonymized data on demographics, medical history, attacks, and symptoms. Data was analysed using descriptive statistics.
Results
Canadian physicians (n=15) practiced a mean of 19.7 years, 67% worked in community settings, and 53% were gastroenterologists. Symptoms informing AHP diagnosis included fatigue (93%), sensory loss (87%), mental confusion (87%), Abdominal pain (80%), red/dark urine (80%), vomiting (73%). AHP diagnostic tests considered informative for diagnosis included urinary ALA (87%) and PBG (80%); however, several non-specific tests were also commonly considered informative of AHP. Chronic symptoms reported included fatigue (75%), nausea/vomiting (70%), weakness (66%), pain (58%), anxiety (54%), diarrhea (41%), constipation (40%). Canadian physicians reported a mean of 58% AHP patients they manage being initially misdiagnosed. Global patients (n=546) were aged 40 years (mean), female (52%), with AIP (83%). Canadian patients (n=38) were aged 41 years (mean), female (61%), with AIP (78%). Patients had mean of 3.4 attacks and 1.6 hospitalizations in the past year.
Conclusions
This study highlights the challenges diagnosing AHP due to non-specificity of symptoms and limited understanding of diagnostic procedures. Due to the frequent presentation of gastrointestinal symptoms, AHP should be included in gastroenterologists’ differential diagnosis of patients presenting with non-specific abdominal pain. Among patients diagnosed with AHP, both acute attacks and chronic symptoms were reported, implicating both in the disease.
Funding Agencies
Alnylam Pharmaceuticals
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Affiliation(s)
- S Roblin
- Alnylam Pharmaceuticals, Cambridge, MA
| | | | - S Murray
- Alnylam Pharmaceuticals, Cambridge, MA
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Ko J, Koshy A, Han H, Cailes B, Gow P, Testro A, Weinberg L, Lim H, Farouque O, Teh A. 221 Impact of Liver Transplantation on QT Interval in Patients With Cirrhosis. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.228] [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: 11/29/2022]
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28
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Chang L, Ko J, Weil A, Weng H, Kushiro-Banker T. Comparison of anesthetic and cardiorespiratory effects of tiletamine-zolazepam-detomidine-butorphanol (TZDB), tiletamine-zolazepam-xylazine-butorphanol (TZXB), and ketamine-detomidine-butorphanol (KDB) in pigs. Vet Anaesth Analg 2019. [DOI: 10.1016/j.vaa.2019.08.012] [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: 10/25/2022]
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29
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Koshy AN, Cailes B, Gow P, Testro A, Sajeev JK, Han H, Ko J, Weinberg L, Lim H, Teh A, Farouque O. P3466Cardiac output in end-stage liver disease increases with the severity of liver dysfunction. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
End-stage liver disease is associated with significant systemic and haemodynamic alterations that affect cardiac function. Cirrhotic cardiomyopathy remains an ill-defined entity among cardiologists. Understanding the complex interplay between liver dysfunction and cardiac function can lead to a better understanding of the compensatory mechanisms of the heart in liver failure.
Purpose
To investigate whether severity of liver disease affects baseline cardiac output in a large contemporary cohort of patients undergoing liver transplant work-up.
Methods
Consecutive patients that underwent pre-liver transplant (LT) workup between 2010–2017 were included. All patients underwent a resting echocardiogram. Cardiac output (CO) was prospectively recorded at baseline by pulsed-wave Doppler examination of the left ventricular outflow tract from the apical window and systemic vascular resistance (SVR) was calculated as 80 x (mean arterial pressure (MAP)/CO). Severity of liver disease was characterized by the model of end-stage liver disease (MELD) and Child-Pugh scores.
Results
560 patients were included (mean age 57.5±7.7, 74.8% male). Mean MELD score was 19±7 and Child-Pugh Score was 9±3. There was an inverse linear relationship between the severity of liver disease by the MELD score and baseline SVR (rho 0.40, P<0.001). As SVR reduced, there was also a significant rise in baseline CO with a strong inverse correlation between the two variables (rho 0.86, p<0.001). There was a significant linear correlation between the severity of liver disease and baseline CO with both the scores (MELD Score rho 0.42, p<0.001; Child Pugh rho 0.44, p<0.001) (Figure).
Baseline CO in LT Patients by Severity
Conclusions
Baseline CO increased with the severity of liver dysfunction due to a reduced afterload. A higher resting CO may lead to patients encroaching on their cardiac reserve at rest. This provides a pathophysiological insight suggesting a limited role for beta-blockers, particularly in patients with advanced liver cirrhosis.
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Affiliation(s)
- A N Koshy
- Austin Health Hospital, Department of Cardiology, Melbourne, Australia
| | - B Cailes
- Austin Health Hospital, Department of Cardiology, Melbourne, Australia
| | - P Gow
- Austin Health Hospital, Victorian Liver Transplant Unit, Melbourne, Australia
| | - A Testro
- Austin Health Hospital, Victorian Liver Transplant Unit, Melbourne, Australia
| | - J K Sajeev
- Austin Health Hospital, Department of Cardiology, Melbourne, Australia
| | - H Han
- Austin Health Hospital, Department of Cardiology, Melbourne, Australia
| | - J Ko
- Austin Health Hospital, Department of Cardiology, Melbourne, Australia
| | - L Weinberg
- Austin Health Hospital, Department of Anaesthesia, Melbourne, Australia
| | - H Lim
- Austin Health Hospital, Department of Cardiology, Melbourne, Australia
| | - A Teh
- Austin Health Hospital, Department of Cardiology, Melbourne, Australia
| | - O Farouque
- Austin Health Hospital, Department of Cardiology, Melbourne, Australia
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Ko J, Lester B, Le N, Bowering G, Rugayan C, Kumar A. Cancer-specific survival with or without adjuvant chemotherapy in high-risk stage I endometrial cancer. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz250.051] [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: 11/14/2022] Open
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31
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Cailes B, Koshy AN, Han H, Sajeev JK, Ko J, Weinberg L, Gow P, Testro A, Srivastava P, Lim H, Teh A, Farouque O. P3465Inducible left ventricular outflow tract obstruction is associated with a higher incidence of perioperative cardiac arrest in liver transplantation. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Inducible left ventricular outflow tract obstruction (LVOTO) is not infrequently encountered in liver transplant (LT) candidates undergoing cardiac workup. While the impact of LVOTO on adverse cardiovascular haemodynamics is well reported, it is unclear whether it predisposes to perioperative cardiovascular complications following LT.
Purpose
To investigate the effect of inducible left ventricular outflow tract obstruction on perioperative cardiovascular complications in a modern cohort of liver transplant patients.
Methods
Consecutive patients undergoing dobutamine stress echocardiography (DSE) were evaluated from a quaternary LT centre between 2010 and 2017. Inducible LVOTO was defined as LVOT gradient ≥36mmHg. Perioperative major adverse cardiovascular events (MACE) at 30 days and all-cause death were recorded from a prospectively maintained transplantation database and augmented by electronic medical record review.
Results
We evaluated 560 patients who underwent DSE as part of a workup for LT. Of these, 319 progressed to transplant. Inducible LVOTO was observed in 68 patients (21.3%). A higher baseline cardiac output (7.7 L/min vs 7.0 L/min, p=0.002) predicted for development of inducible LVOTO. Seventy-seven patients (4.1%) experienced a MACE including five deaths, 19 cases of heart failure, 11 cardiac arrests, 10 acute coronary syndromes and 46 cases of arrhythmias (VT/AF). Overall MACE occurred in 17/68 patients (25.0%) with LVOTO and 60/251 patients (23.9%) without LVOTO (p=0.85). However, there was a significantly increased risk of resuscitated perioperative cardiac arrest in patients with LVOTO (7.4% vs 2.4%, p=0.04). Patients with LVOTO also required significantly greater volumes of fluid intra-operatively (8.37L vs. 6.71L, p=0.043).
Cardiac Arrest in LT Patients with LVOTO
Conclusions
Inducible LVOTO is a frequent finding occurring in 21.3% of LT candidates. Despite higher intraoperative fluid resuscitation, LVOTO increased the risk of a perioperative cardiac arrest. Further studies are required to confirm these findings and to assess whether patients with LVOTO undergoing liver transplantation may benefit from heightened perioperative surveillance.
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Affiliation(s)
- B Cailes
- Austin Health Hospital, Department of Cardiology, Melbourne, Australia
| | - A N Koshy
- Austin Health Hospital, Department of Cardiology, Melbourne, Australia
| | - H Han
- Austin Health Hospital, Department of Cardiology, Melbourne, Australia
| | - J K Sajeev
- Austin Health Hospital, Department of Cardiology, Melbourne, Australia
| | - J Ko
- Austin Health Hospital, Department of Cardiology, Melbourne, Australia
| | - L Weinberg
- Austin Health Hospital, Department of Anaesthesia, Melbourne, Australia
| | - P Gow
- Austin Health Hospital, Victorian Liver Transplant Unit, Melbourne, Australia
| | - A Testro
- Austin Health Hospital, Victorian Liver Transplant Unit, Melbourne, Australia
| | - P Srivastava
- Austin Health Hospital, Department of Cardiology, Melbourne, Australia
| | - H Lim
- Austin Health Hospital, Department of Cardiology, Melbourne, Australia
| | - A Teh
- Austin Health Hospital, Department of Cardiology, Melbourne, Australia
| | - O Farouque
- Austin Health Hospital, Department of Cardiology, Melbourne, Australia
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Kim N, Jung Y, Jang J, Cheon D, Koh W, Kim J, Ko J, Ro Y. 563 Incisional biopsy-induced spontaneous regression with halo phenomenon in a congenital melanocytic nevus. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.478] [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: 10/26/2022]
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Kim S, Chae J, Jung L, Lee S, Lee S, Rhee K, Kim W, Ko J, Lee J, Kim Y. Cytochrome Epoxygenase P450 2j Promote Ppar Α -Mediated Autophagy In Ob-/Ob- Rats. Atherosclerosis 2019. [DOI: 10.1016/j.atherosclerosis.2019.06.353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Hopkins RJ, Ko J, Gamble GD, Young RP. Airflow limitation and survival after surgery for non-small cell lung cancer: Results from a systematic review and lung cancer screening trial (NLST-ACRIN sub-study). Lung Cancer 2019; 135:80-87. [PMID: 31447006 DOI: 10.1016/j.lungcan.2019.07.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 07/11/2019] [Accepted: 07/16/2019] [Indexed: 01/28/2023]
Abstract
OBJECTIVE Lung cancer remains the single greatest cause of cancer mortality where surgery for early stage non-small cell lung cancer achieves the greatest survival. While there is growing optimism for better outcomes with screening using annual computed tomography, the impact of co-existing airflow limitation on survival remains unknown. To compare survival in non-small cell lung cancer patients undergoing surgery stratified according to the presence or absence of pre-surgery airflow limitation. MATERIALS AND METHODS We undertook a systematic literature search of non-screen lung cancer that encompassed studies reported between January 1946 and January 2017. Full-text articles were identified following eligibility scoring, with data extracted and analysed using a standardised analytical method (PRISMA). The results of this systematic review in non-screen lung cancers were compared to real-world results from a lung cancer screening cohort (N = 10,054), where outcomes following surgery could be compared after stratification according to pre-surgery airflow limitation. RESULTS In the systematic review, 6899 subjects were included from 10 studies; 7 were retrospective, 3 were prospective. Overall survival was 950 (44%) in 2144 people with COPD and 2597 (55%) from 4755 controls (unadjusted P value <0.001). However, the overall meta-analysed random effects odds ratio for overall survival (N = 10) and 5-year survival (N = 4) comparing those with and without COPD was 0.91 (95% CI = 0.84-1.00) and 0.99 (95% CI = 0.79-1.24) respectively. There were no signs of significant heterogeneity (I2 = 19.1%, P = 0.27) nor publication bias as assessed by funnel plot and Egger's test (P = 0.19). In the lung cancer screening sub-study of 10,054 screening participants we found no difference in 5-year survival in those with and without airflow limitation (84% and 81% respectively, P = 0.64). CONCLUSION Survival after surgery for non-small cell lung cancer is comparable between those with and without spirometry evidence of airflow limitation. This finding was replicated in lung cancer diagnosed during screening.
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Affiliation(s)
- R J Hopkins
- Faculty of Medical and Health Sciences University of Auckland, PO Box 37-971, Auckland, New Zealand
| | - J Ko
- Faculty of Medical and Health Sciences University of Auckland, PO Box 37-971, Auckland, New Zealand
| | - G D Gamble
- Faculty of Medical and Health Sciences University of Auckland, PO Box 37-971, Auckland, New Zealand
| | - R P Young
- Faculty of Medical and Health Sciences University of Auckland, PO Box 37-971, Auckland, New Zealand.
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Tobita R, Egusa C, Maeda T, Abe N, Sakai N, Suzuki S, Kawashima H, Hokibara S, Ko J, Okubo Y. A novel CARD14 variant, homozygous c.526G>C (p.Asp176His), in an adolescent Japanese patient with palmoplantar pustulosis. Clin Exp Dermatol 2019; 44:694-696. [PMID: 30723930 DOI: 10.1111/ced.13926] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/17/2018] [Indexed: 11/30/2022]
Affiliation(s)
- R Tobita
- Department of Dermatology, Tokyo Medical University, Tokyo, Japan
| | - C Egusa
- Department of Dermatology, Tokyo Medical University, Tokyo, Japan
| | - T Maeda
- Department of Dermatology, Tokyo Medical University, Tokyo, Japan
| | - N Abe
- Department of Dermatology, Tokyo Medical University, Tokyo, Japan
| | - N Sakai
- Department of Dermatology, Tokyo Medical University, Tokyo, Japan
| | - S Suzuki
- Department of Pediatrics, Tokyo Medical University, Tokyo, Japan
| | - H Kawashima
- Department of Pediatrics, Tokyo Medical University, Tokyo, Japan
| | - S Hokibara
- Department of Pediatrics, Kohu City Hospital, Yamanashi, Japan
| | - J Ko
- Department of Otorhinolaryngology, Kohu City Hospital, Yamanashi, Japan
| | - Y Okubo
- Department of Dermatology, Tokyo Medical University, Tokyo, Japan
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Cailes B, Koshy A, Han H, Sajeev J, Ko J, Weinberg L, Gow P, Testro A, Srivastava P, Lim H, Teh A, Farouque O. Inducible Left Ventricular Outflow Tract Obstruction is Associated with a Higher Incidence of Perioperative Cardiac Arrest in Liver Transplantation. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.400] [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: 11/28/2022]
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Cailes B, Koshy A, Sajeev J, Han H, Ko J, Weinberg L, Gow P, Testro A, Lim H, Teh A, Farouque O. Hepatorenal Syndrome in Patients Undergoing Liver Transplantation is an Independent Risk Factor for Perioperative Cardiac Complications. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.391] [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: 11/16/2022]
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Ko J. Evaluating Patient Attitudes and Barriers towards Smart Technology for Cardiac Monitoring: Results from a Prospective Multi-Centre Study in an Elderly Population. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.185] [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: 10/26/2022]
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Koshy A, Gow P, Cailes B, Sajeev J, Teh A, Lim H, Han H, Jones R, Testro A, Byrne M, Ko J, Clark D, Yudi M, Farouque O. Impact of Cardiovascular Risk Factors on Survival following Liver Transplantation: Results from the Australian & New Zealand Liver Transplant Registry. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.394] [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: 11/17/2022]
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Koshy A, Cailes B, Gow P, Testro A, Han H, Sajeev J, Ko J, Weinberg L, Srivastava P, Lim H, Teh A, Farouque O. Cardiac Output in End-Stage Liver Disease Increases Proportional to the Degree of Liver Dysfunction. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.359] [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: 11/24/2022]
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Koshy A, Gow P, Sajeev J, Cailes B, Ko J, Ramchand J, Lim H, Teh A, Han H, Jones R, Testro A, Byrne M, Clark D, Yudi M, Farouque O. Rise in Proportional Early Cardiovascular Mortality Following Liver Transplantation: Temporal Trends from the Australian & New Zealand Liver Transplant Registry. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.426] [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: 10/26/2022]
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Cailes B, Koshy A, Ko J, Han H, Lim H, Teh A, Weinberg L, Testro A, Gow P, Farouque O. Beta Blocker Use Increases The Risk of Perioperative Cardiac Events in Liver Transplant Patients. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.355] [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: 10/26/2022]
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43
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Ko J, Hemphill M, Yang Z, Sewell E, Na YJ, Sandsmark DK, Haber M, Fisher SA, Torre EA, Svane KC, Omelchenko A, Firestein BL, Diaz-Arrastia R, Kim J, Meaney DF, Issadore D. Diagnosis of traumatic brain injury using miRNA signatures in nanomagnetically isolated brain-derived extracellular vesicles. Lab Chip 2018; 18:3617-3630. [PMID: 30357245 PMCID: PMC6334845 DOI: 10.1039/c8lc00672e] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The accurate diagnosis and clinical management of traumatic brain injury (TBI) is currently limited by the lack of accessible molecular biomarkers that reflect the pathophysiology of this heterogeneous disease. To address this challenge, we developed a microchip diagnostic that can characterize TBI more comprehensively using the RNA found in brain-derived extracellular vesicles (EVs). Our approach measures a panel of EV miRNAs, processed with machine learning algorithms to capture the state of the injured and recovering brain. Our diagnostic combines surface marker-specific nanomagnetic isolation of brain-derived EVs, biomarker discovery using RNA sequencing, and machine learning processing of the EV miRNA cargo to minimally invasively measure the state of TBI. We achieved an accuracy of 99% identifying the signature of injured vs. sham control mice using an independent blinded test set (N = 77), where the injured group consists of heterogeneous populations (injury intensity, elapsed time since injury) to model the variability present in clinical samples. Moreover, we successfully predicted the intensity of the injury, the elapsed time since injury, and the presence of a prior injury using independent blinded test sets (N = 82). We demonstrated the translatability in a blinded test set by identifying TBI patients from healthy controls (AUC = 0.9, N = 60). This approach, which can detect signatures of injury that persist across a variety of injury types and individual responses to injury, more accurately reflects the heterogeneity of human TBI injury and recovery than conventional diagnostics, opening new opportunities to improve treatment of traumatic brain injuries.
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Affiliation(s)
- J Ko
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA.
| | - M Hemphill
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA.
| | - Z Yang
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA.
| | - E Sewell
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA.
| | - Y J Na
- Department of Medicine, Division of Nephrology, College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA
| | - D K Sandsmark
- Department of Neurology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - M Haber
- Department of Neurology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - S A Fisher
- Department of Biology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - E A Torre
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA.
| | - K C Svane
- Department of Cell Biology and Neuroscience, Rutgers, the State University of New Jersey, NJ 08854, USA
| | - A Omelchenko
- Department of Cell Biology and Neuroscience, Rutgers, the State University of New Jersey, NJ 08854, USA
| | - B L Firestein
- Department of Cell Biology and Neuroscience, Rutgers, the State University of New Jersey, NJ 08854, USA
| | - R Diaz-Arrastia
- Department of Neurology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - J Kim
- Department of Biology, University of Pennsylvania, Philadelphia, PA 19104, USA and Department of Computer and Information Science, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - D F Meaney
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA. and Department of Neurosurgery, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - D Issadore
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA. and Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
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Felthous AR, Ko J. Sexually Violent Predator Law in the United States. East Asian Arch Psychiatry 2018; 28:159-173. [PMID: 30563954] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Sexually violent predator (SVP) laws in the United States are controversial. They tend to be opposed by academics, libertarians, and professional organisations but are supported by states and the Supreme Court. This study reviews the history of SVP legislation, compares features of SVP laws among states, and summarise requirements by the Supreme Court that shaped these laws. Features of SVP laws include identification of sexual offenders with mental abnormality that predisposes them to sexually offending behaviours in the future, and standards of proof for conditional or unconditional release. A comprehensive understanding of all statutes can inform policymakers about SVP laws, whether supportive or restrictive of such legislation.
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Affiliation(s)
- A R Felthous
- Forensic Psychiatry Division, Department of Psychiatry and Behavioral Neuroscience, Saint Louis University School of Medicine, Saint Louis, Missouri, USA
| | - J Ko
- Department of Psychiatry and Behavioral Neuroscience, Saint Louis University School of Medicine, Saint Louis, Missouri, USA
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Tan D, Kim SW, Sequist L, Ponce Aix S, Smit E, Hida T, Yang JH, Felip E, Seto T, Grohe C, Wolf J, Ko J, Marriere E, Belli R, Giovannini M, Kim DW. Phase II results for single-agent nazartinib (EGF816) in adult patients (pts) with treatment-naive EGFR-mutant non-small cell lung cancer (NSCLC). Ann Oncol 2018. [DOI: 10.1093/annonc/mdy424.073] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Ko J, Lester B, Bowering G, Rugayan C, Ghement I, Aalok K. Risk of cancer associated death in younger vs older patients with FIGO stage I endometrial cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy285.190] [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: 11/14/2022] Open
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Chung J, Ko J, Hahn SH, Kim HS, Wang SJ. Considerations of the q-profile control in KSTAR for advanced tokamak operation scenarios. Rev Sci Instrum 2018; 89:10D112. [PMID: 30399838 DOI: 10.1063/1.5035126] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 06/08/2018] [Indexed: 06/08/2023]
Abstract
The q-profile control is essential for tokamaks exploring the advanced tokamak scenarios, which is expected to be able to provide a possible route toward a steady-state high performance operation in a fully non-inductive current drive state. This is because the pressure and current profiles must remain optimal for the scenario during the injection of large amounts of heating and current drive. Here, essential tools for the q-profile control are the motional Stark effect diagnostic for measuring the radial magnetic pitch angle profile and a state-of-the-art plasma control system. The pulse duration of the H-mode discharge at KSTAR has been extended year by year with improved control performance, and the experiment of internal transport barrier (ITB) formation in a weakly reversed q-profile with a marginal neutral beam injection majority heating successfully demonstrated that the ITB is an alternative candidate to achieve a high performance regime in KSTAR. These recent achievements are attributed to reliable profile measurement, which means that profile feedback control has become a necessary step to ensure a robust and reliable approach to advanced scenarios as the next step of research in KSTAR. In this paper, we discuss the technical and conceptual requirements for q-profile control according to the upgrade plan for heating and current drive systems in the coming years.
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Affiliation(s)
- J Chung
- National Fusion Research Institute, 169-148, Gwahak-ro, Yuseong-gu, Daejeon 34133, South Korea
| | - J Ko
- National Fusion Research Institute, 169-148, Gwahak-ro, Yuseong-gu, Daejeon 34133, South Korea
| | - S-H Hahn
- National Fusion Research Institute, 169-148, Gwahak-ro, Yuseong-gu, Daejeon 34133, South Korea
| | - H S Kim
- National Fusion Research Institute, 169-148, Gwahak-ro, Yuseong-gu, Daejeon 34133, South Korea
| | - S J Wang
- National Fusion Research Institute, 169-148, Gwahak-ro, Yuseong-gu, Daejeon 34133, South Korea
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Huang X, Liu DM, Liu C, Fu J, Wan BN, Lyu B, Wu ZW, Holcomb CT, Ko J, Rowan WL, Huang H, Miao GZ. Four-dimensional calibration turntable of the motional Stark effect diagnostic on EAST. Rev Sci Instrum 2018; 89:10B108. [PMID: 30399705 DOI: 10.1063/1.5036938] [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] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 07/11/2018] [Indexed: 06/08/2023]
Abstract
The motional Stark effect (MSE) diagnostic is applied to measure the safety factor q and current density profile of a tokamak device, which are important parameters in realizing the high-performance and long-pulse steady state of a tokamak. A single-channel MSE diagnostic based on dual photoelastic modulators, whose sightline meets with the neutral beam injection at a major radius of R = 2.12 m, has been built for the D window of the Experimental Advanced Superconducting Tokamak (EAST). According to the requirements of MSE diagnostic polarimetric calibration, a high-precision four-dimensional calibration turntable, driven by four stepping motors and controlled by software running on the computer, was designed for EAST. The turntable allows us to rapidly calibrate the MSE diagnostic in a series of positions and angles during EAST maintenance. The turntable can move in four dimensions of translation, yaw, pitch, and roll of the polarizer and can create linearly polarized light at any given angle with accuracy of ∼0.05° for the MSE system offline calibration. The experimental results of the MSE diagnostic calibration in the laboratory show that the turntable has the advantages of high positioning accuracy, flexible spatial movement, and convenient control and fully meets the calibration requirements of an MSE diagnosis system.
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Affiliation(s)
- X Huang
- School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China
| | - D M Liu
- School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China
| | - C Liu
- School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China
| | - J Fu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - B N Wan
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - B Lyu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - Z W Wu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - C T Holcomb
- Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, California 94550, USA
| | - J Ko
- National Fusion Research Institute, Yuseong, Daejeon 305-333, South Korea
| | - W L Rowan
- Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas 78712, USA
| | - H Huang
- Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas 78712, USA
| | - G Z Miao
- School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China
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Choi W, Eum J, Kim S, Bang S, Kim H, Kim Y, Lee D, Ko J, Kim J, Chang E, Lee W. Macrophage colony stimulating factor(M-CSF) and its receptor(M-CSFR) expression in the human luteinized granulose cells(GCS) is poitively correlated with IVF-ET pregnancy outcome. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.892] [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: 11/29/2022]
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Kim S, Eum J, Choi W, Kwon S, Bang S, Kim M, Lee D, Ko J, Hwang J, Chang E, Lee W. Meiotic spindle position and second polar body orientation enable the prediction of embryonic developmental potential and embryo euploidy. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.648] [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: 10/28/2022]
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