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Lee SY, Choi SH, Lee DW. Vertical Ridge Augmentation with Customized Titanium Mesh Using a 3D-Printing Model: A Prospective Study in Humans. Int J Oral Maxillofac Implants 2024; 39:153-163. [PMID: 38416009 DOI: 10.11607/jomi.10184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024] Open
Abstract
PURPOSE To evaluate the usefulness of ridge augmentation using a customized titanium mesh (CTM) that was preformed by trimming and bending the commercial titanium mesh on a virtually reconstructed 3D acrylic resin model using clinical, radiologic, histologic, and histomorphometric analyses. MATERIALS AND METHODS This study was designed prospectively for patients who required vertical ridge augmentation using a staged approach before implant surgery. After installation of the CTM, grafting was performed using deproteinized porcine bone mineral covered with an absorbable membrane. Computed tomography was performed preoperatively and 6 months after simultaneous/staged guided bone regeneration to measure planned, reconstructed, and lacking bone volume, and the reconstruction rate was calculated based on these values. Clinical complications were also recorded, particularly the mesh exposure rate. At re-entry, the bone core was obtained using a trephine bur, and histologic and histomorphometric analyses were performed. RESULTS A total of 10 sites in eight patients were used for the study analysis. The mean planned bone volume was 1.15 cm3 (range: 0.78 to 1.56 cm3), mean lacking bone volume was 0.13 cm3 (range: 0 to 0.59 cm3), and mean reconstructed bone volume was 1.02 cm3 (range: 0.56 to 1.43 cm3). The exposure rate was 30% (3 out of 10 sites). The reconstruction rate was over 80%, except for one case that showed suppuration. From histomorphometric analysis, 27.52% ± 16.87% of new bone, 7.62% ± 5.19% of residual graft, and 64.86% ± 23.76% of connective tissue were observed. The core biopsy samples demonstrated different pseudoperiosteum layer appearances based on the healing stage of the augmented sites. In the premature bone, the inner osteogenic layer consisted of multiple layers of osteoblast cells with adjacent large blood vessels. However, in the mature augmented site, there was no specific inner osteogenic layer, and the outer fibrous layer was dominant. CONCLUSIONS The fabrication of CTM based on the application of the 3D-printing technique makes vertical ridge augmentation easier and can reduce complications and achieve target bone acquisition. In addition, it is expected that quantitative analysis of the pseudoperiosteum layer will be facilitated using the CTM.
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Pyo SW, Paik JW, Lee DN, Seo YW, Park JY, Kim S, Choi SH. Comparative Analysis of Bone Regeneration According to Particle Type and Barrier Membrane for Octacalcium Phosphate Grafted into Rabbit Calvarial Defects. Bioengineering (Basel) 2024; 11:215. [PMID: 38534489 DOI: 10.3390/bioengineering11030215] [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: 01/08/2024] [Revised: 02/13/2024] [Accepted: 02/21/2024] [Indexed: 03/28/2024] Open
Abstract
This animal study was aimed to evaluate the efficacy of new bone formation and volume maintenance according to the particle type and the collagen membrane function for grafted octacalcium phosphate (OCP) in rabbit calvarial defects. The synthetic bone substitutes were prepared in powder form with 90% OCP and granular form with 76% OCP, respectively. The calvarial defects were divided into four groups according to the particle type and the membrane application. All specimens were acquired 2 weeks (n = 5) and 8 weeks (n = 5) after surgery. According to the micro-CT results, the new bone volume increased at 2 weeks in the 76% OCP groups compared to the 90% OCP groups, and the bone volume ratio was significantly lower in the 90% OCP group after 2 weeks. The histomorphometric analysis results indicated that the new bone area and its ratio in all experimental groups were increased at 8 weeks except for the group with 90% OCP without a membrane. Furthermore, the residual bone graft area and its ratio in the 90% OCP groups were decreased at 8 weeks. In conclusion, all types of OCP could be applied as biocompatible bone graft materials regardless of its density and membrane application. Neither the OCP concentration nor the membrane application had a significant effect on new bone formation in the defect area, but the higher the OCP concentration, the less graft volume maintenance was needed.
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Affiliation(s)
- Se-Wook Pyo
- Department of Prosthodontics, Gangnam Severance Dental Hospital, Yonsei University College of Dentistry, Seoul 06273, Republic of Korea
| | - Jeong-Won Paik
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea
| | - Da-Na Lee
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea
| | - Young-Wook Seo
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea
| | - Jin-Young Park
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea
| | - Sunjai Kim
- Department of Prosthodontics, Gangnam Severance Dental Hospital, Yonsei University College of Dentistry, Seoul 06273, Republic of Korea
| | - Seong-Ho Choi
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul 03722, Republic of Korea
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Choi D, Choi SH, Jung H, Kim J. CT findings of inferior vena cava trauma according to the level of injury: a retrospective analysis of 19 cases in a single trauma centre. Clin Radiol 2024; 79:e182-e188. [PMID: 37925364 DOI: 10.1016/j.crad.2023.10.003] [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: 05/16/2023] [Revised: 09/29/2023] [Accepted: 10/05/2023] [Indexed: 11/06/2023]
Abstract
AIM To analyse the clinicoradiological characteristics of traumatic inferior vena cava (IVC) injury level on preoperative computed tomography (CT). MATERIALS AND METHODS This retrospective study evaluated patients from a single trauma centre treated for traumatic IVC injury between January 2014 and January 2021. Data on demographics, mechanism of injury, Injury Severity Score, radiological findings on CT and angiography, IVC injury level in surgical findings, complications, and clinical outcomes were collected. RESULTS During the 8-year study period, 36 patients presented with traumatic IVC injury: 19 underwent preoperative CT with 17 (89%) blunt and two (11%) penetrating injuries. The most common primary CT sign was contour abnormality (53%, n=10), followed by intraluminal flap and active extravasation (21%, n=4). Among the secondary signs, hepatic laceration (53%, n=10) and retroperitoneal haemorrhage (53%, n=10) were the most common. Frequencies of primary and secondary signs were higher in the infrarenal and suprarenal than in the retrohepatic vena cava injuries. Diagnostic capability of preoperative CT for IVC injury differed according to the IVC level. The detection rate was the highest for an infrarenal vena cava injury at 100% (n=4), followed by that for a suprarenal, suprahepatic, and retrohepatic vena cava injuries at 75% (n=3), 43% (n=3), and 25% (n=1), respectively. CONCLUSION CT findings of traumatic IVC injuries may vary depending on the mechanism and anatomical site of injury. Familiarity with IVC injury imaging features may help in diagnosis and surgical treatment planning.
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Affiliation(s)
- D Choi
- Division of Trauma Surgery, Department of Surgery, Ajou University School of Medicine, Republic of Korea
| | - S H Choi
- Division of Trauma Surgery, Department of Surgery, Ajou University School of Medicine, Republic of Korea
| | - H Jung
- Division of Trauma Surgery, Department of Surgery, Ajou University School of Medicine, Republic of Korea
| | - J Kim
- Department of Radiology, Ajou University School of Medicine, Republic of Korea.
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Choi SH, Templin T. College students' preferences for tobacco treatment: a discrete choice experiment. Health Educ Res 2023; 38:563-574. [PMID: 37639385 DOI: 10.1093/her/cyad035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 07/27/2023] [Accepted: 08/03/2023] [Indexed: 08/31/2023]
Abstract
The purpose of this study was to elicit preferences for the 'format' and 'content' of tobacco treatment among college student smokers, using an online discrete choice experiment (DCE) survey. A DCE survey, supplemented with a think-aloud method, was conducted among 54 college students who smoked combustible cigarettes and/or e-cigarettes. Conditional logistic regression models were constructed to determine optimal profiles of treatment. Cutting down nicotine rather than quitting 'cold turkey' (P < 0.001) and two-way communication (P < 0.001) were viewed as the most critical attributes for the intervention 'format'; changing behaviors rather than social groups/peers (P < 0.001) and autonomy (P < 0.001) were viewed as the most critical attributes for the intervention 'content'. Some preferences varied based on smoking subgroups. Combustible cigarette users preferred interventions with a longer time commitment (P < 0.05) and without nicotine replacement therapies (NRTs) (P < 0.001). Think-aloud data supported the DCE findings and further revealed a strong desire for cutting down nicotine and keeping social groups/peers and misconceptions regarding NRTs. Our study findings can guide tobacco treatment tailored to college students. These treatments should be tailored to specific smoker subgroups.
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Affiliation(s)
- S H Choi
- College of Nursing - Wayne State University, 5557 Cass Ave #350, Detroit, MI 48202, USA
| | - T Templin
- College of Nursing - Wayne State University, 5557 Cass Ave #350, Detroit, MI 48202, USA
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Kwon JS, Hong SI, Kim JY, Cha HH, Kim T, Park SY, Kim MC, Park SY, Choi SH, Chung JW, Kim SH. Cytokine and Chemokine Profiles in Acute Severe Fever with Thrombocytopenia Syndrome and Scrub Typhus in South Korea. Am J Trop Med Hyg 2023; 109:1311-1318. [PMID: 37903435 DOI: 10.4269/ajtmh.23-0146] [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: 03/19/2023] [Accepted: 09/08/2023] [Indexed: 11/01/2023] Open
Abstract
In East Asia, severe fever with thrombocytopenia syndrome (SFTS) and scrub typhus, which are common endemic tick- and mite-mediated diseases sharing common clinical manifestations, are becoming public health concerns. However, there are limited data on the comparative immunopathogenesis between the two diseases. We compared the cytokine profiles of SFTS and scrub typhus to further elucidate immune responses that occur during the disease courses. We prospectively enrolled 44 patients with confirmed SFTS and 49 patients with scrub typhus from July 2015 to December 2020. In addition, 10 healthy volunteers were enrolled as healthy controls. A cytometric bead array was used to analyze plasma samples for 16 cytokines. A total of 68 plasma samples, including 31 (45.6%) from patients with SFTS and 37 (54.4%) from patients with scrub typhus, were available for cytokine measurement. There were three cytokine expression patterns: increased levels in both SFTS and scrub typhus (interleukin 6 [IL-6], IL-10, interferon gamma induced protein 10 [IP-10], and granulocyte-macrophage colony-stimulating factor [GM-CSF]), highest levels in SFTS (interferon alpha [IFN-α], IFN-γ, granulocyte-CSF [G-CSF], monocyte chemotactic protein 1 [MCP-1], macrophage inflammatory protein 1α [MIP-1α], and IL-8), and distinct levels in scrub typhus (IL-12p40, tumor necrosis factor alpha [TNFα], IL-1β, regulated on activation and normally T-cell expressed and secreted [RANTES], IL-17A, and vascular endothelial growth factor [VEGF]). Although patients with acute SFTS and scrub typhus exhibited partly shared expression patterns of cytokines related to disease severity, the different profiles of cytokines and chemokines might contribute to higher mortality in SFTS than in scrub typhus. Discrete patterns of helper T cell-related cytokines and VEGF might reflect differences in CD4 T-cell responses and vascular damage between these diseases.
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Affiliation(s)
- Ji-Soo Kwon
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sun In Hong
- Division of Infectious Diseases, Soonchunhyang University Cheonan Hospital, Soonchunhyang University College of Medicine, Cheonan, Republic of Korea
| | - Ji Yeun Kim
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Hye Hee Cha
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Taeeun Kim
- Division of Infectious Diseases, Gyeongsang National University Hospital, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - Se Yoon Park
- Division of Infectious Diseases, Department of Internal Medicine, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Republic of Korea
| | - Min-Chul Kim
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Seoul, Republic of Korea
| | - Seong Yeon Park
- Department of Infectious Diseases, Dongguk University Ilsan Hospital, Goyang, Republic of Korea
| | - Seong-Ho Choi
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Seoul, Republic of Korea
| | - Jin-Won Chung
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Seoul, Republic of Korea
| | - Sung-Han Kim
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
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Lee DY, Yun SH, Lee SY, Lee J, Jr Mariano E, Joo ST, Choi I, Choi JS, Kim GD, Lee J, Choi SH, Hur SJ. Analysis of commercial fetal bovine serum (FBS) and its substitutes in the development of cultured meat. Food Res Int 2023; 174:113617. [PMID: 37986472 DOI: 10.1016/j.foodres.2023.113617] [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: 06/26/2023] [Revised: 10/20/2023] [Accepted: 10/21/2023] [Indexed: 11/22/2023]
Abstract
Fetal bovine serum (FBS) is an extremely important culture growth supplement, accounting for approximately 60 % of cell-culture-media costs; therefore, lowering FBS-acquisition costs for the industrialization of cultured meat is imperative. This study attempted to produce an FBS substitute using discarded livestock by-products, with particular focus on formulating a product with a composition similar to that of FBS to improve effectiveness. However, to date, no study has precisely analyzed the commercial components of FBS, and this study is the first to compare the chemical composition of FBS and commercially available horse serum purchased from the United States or Europe with that of FBS substitutes developed by our team. This study analyzed the chemical composition of the FBS products purchased by our team over the past 3 years via blood, sodium dodecyl sulfate-polyacrylamide gel electrophoresis, and independent composition analyses. While the composition and quality of commercial FBS products are known to vary, the FBS composition of our purchased products was relatively uniform regardless of company, brand, or country of origin. In contrast, FBS substitutes obtained from three major livestock species (cattle, pig, and chicken) clearly exhibited differences in composition, a phenomenon that was also observed upon comparing with FBS as well as among different species. Therefore, to replace commercial FBS entirely, the production of a proportionately effective substitute product comprising an equal or similar composition is required, and the results of this study can be a steppingstone to achieving this. In addition, FBS substitutes manufactured using inexpensive slaughter by-products as raw materials are expected to ultimately reduce the unit cost of cultured meat production.
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Affiliation(s)
- Da Young Lee
- Department of Animal Science and Technology, Chung-Ang University, Anseong 17546, Korea
| | - Seung Hyeon Yun
- Department of Animal Science and Technology, Chung-Ang University, Anseong 17546, Korea
| | - Seung Yun Lee
- Division of Animal Science, Division of Applied Life Science (BK21 Four), Institute of Agriculture & Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Juhyun Lee
- Department of Animal Science and Technology, Chung-Ang University, Anseong 17546, Korea
| | - Ermie Jr Mariano
- Department of Animal Science and Technology, Chung-Ang University, Anseong 17546, Korea
| | - Seon-Tea Joo
- Division of Animal Science, Division of Applied Life Science (BK21 Four), Institute of Agriculture & Life Science, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Inho Choi
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan 38541, Korea
| | - Jung Seok Choi
- Department of Animal Science, Chungbuk National University, Cheongju 28644, Korea
| | - Gap-Don Kim
- Graduate School of International Agricultural Technology, Institutes of Green Bio Science and Technology, Seoul National University, Pyeongchang 25354, Korea
| | - Jihyun Lee
- Department of Food Science and Technology, Chung-Ang University, Anseong 17546, South Korea
| | - Seong-Ho Choi
- Department of Animal Science, Chungbuk National University, Cheongju 28644, Korea
| | - Sun Jin Hur
- Department of Animal Science and Technology, Chung-Ang University, Anseong 17546, Korea.
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Choi SH, Lee JG, Cho JH. The Role of Local Prostate and Metastasis-Directed Radiotherapy in the Treatment of Oligometastatic Prostate Cancer. Int J Radiat Oncol Biol Phys 2023; 117:e373. [PMID: 37785271 DOI: 10.1016/j.ijrobp.2023.06.2476] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) The local ablative therapy for oligometastatic disease (OMD) has the potential to delay further metastases and improve survival. However, it has not been fully elucidated how prostate primary radiotherapy (PPR) and metastasis-directed radiotherapy (MDR) affect prognosis in each different OMD scenario. Herein, we tried to provide efficacy and future perspectives for MDR in oligometastatic prostate cancer. MATERIALS/METHODS Patients diagnosed with prostate cancer between 2010 and 2019 and treated for OMD (≤5 active lesions), which occurred synchronously or metachronously, were included. All patients received MDR at all detected lesions (OMDRT). OMDRT which was performed as soon as OMD was detected was classified as early, and OMDRT for progressions after hormone therapy was classified as late. The primary endpoint was survival after OMDRT, and timing of progression after RT was also analyzed. RESULTS A total of 82 patients with oligometastatic prostate cancer received OMDRT. Among 36 patients with synchronous OMD, 58% received PPR at diagnosis, and 64% received early OMDRT. Among 46 patients with metachronous OMD, 80% received early OMDRT, and 28 received sequential OMDRT for repetitive OMD events. With a median follow-up of 32 months after OMDRT, 54 patients experienced progression and 5-year survival was 78%. Survival was highest in patients with synchronous OMD and early RT (5-year 86%), and 5-year survival of patients with metachronous OMD and early RT was significantly higher than those with late RT (78% vs. 44%, p = 0.003). Survival of patients with synchronous OMD and PPR was significantly higher than those without PPR or with metachronous OMD (5-year 90% vs. 66%, p = 0.030), by delaying progressions (17.9 vs. 7.0 months, p = 0.005). CONCLUSION Survival gain could be achieved through OMDRT in oligometastatic prostate cancer, especially in synchronous OMD status. Also, it was possible to improve the prognosis further when OMDRT was performed early and with PPR.
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Affiliation(s)
- S H Choi
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J G Lee
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J H Cho
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
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Hwang J, Chun J, Choi SH, Cho S, Kim JS. Patient-Specific Deep Learning Model for Clinical Target Volume Delineation on Daily CBCT of Breast Cancer Patients based on Intentional Deep Overfit Learning (IDOL) Framework. Int J Radiat Oncol Biol Phys 2023; 117:e181. [PMID: 37784804 DOI: 10.1016/j.ijrobp.2023.06.1034] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Increasingly complex target volumes and the use of modern irradiation techniques emphasize the importance of daily image guidance more than ever. Significant progress has been made in adjuvant breast cancer radiotherapy (RT) and the need for optimized image guidance is growing. Furthermore, the position of the breast during RT after breast-conserving surgery is highly variable than expected. In this context, cone beam computed tomography (CBCT) is a very effective tool enabling prompt and accurate adaptive radiation therapy (ART). In this study, we aim to develop a deep learning (DL)-based algorithm to segment clinical target volume (CTV) from daily CBCT scans. Also, we validate the optimization of further learning when applying the Intentional Deep Overfit Learning (IDOL) framework. MATERIALS/METHODS A total of 240 different CBCT scans obtained from 100 breast cancer patients were used for this study. CTV was defined as whole breast plus margin in all patients. The workflow consists of two training stages: (1) training a novel 'generalized' DL model (Swin_UNETR) to identify and delineate breast CTV on CBCT scans using 90 breast cancer patient cases (2) applying an 'intentional overfitting' to the 'generalized' DL model to generate a 'patient-specific' model using the remaining 10 breast cancer patients. In this study, for the intentionally overfitting stage, we additionally trained with CBCT scans from the patient's 1st fraction to the 14th fractions cases. The results of the proposed method were compared quantitatively with the expert's contours on 1st-15th fractions CBCT scans using Dice Similarity Coefficient (DSC). RESULTS The average DSC between the 'generalized' DL model-based breast CTV contours and reference contours for the patient's 15th fraction was 0.9672. When implementing the IDOL framework with the CBCT scan obtained during the patient's 1st treatment, the average DSC was improved to 0.9809. When additional CBCT scans taken during each of the 1st to 6th fractions were used for training, the average DSC could be most effectively raised to 0.9835. The p-value comparison between the 'generalized' DL model and the 1st fraction was found to be 3.62E-04, while the comparison with the 6th fractions resulted in a p-value of 8.36E-05. The average time required for IDOL training using one CBCT scan and six CBCT scans was 107 seconds and 127 seconds, respectively. CONCLUSION In this study, we developed a patient-specific DL-based training algorithm to segment CTV in CBCT scans for breast cancer patients. The performance improvement was relatively significant and was confirmed that using continual DL with additional CBCT scans, which are taken every day, can be more accurate and efficient than drawing breast CTV using a general model. Our novel patient-specific model can be effectively applied to various ARTs by not only reducing labor and time but also increasing accuracy.
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Affiliation(s)
- J Hwang
- KAIST, Daejeon, Daejeon, Korea, Republic of (South) Korea
| | - J Chun
- Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - S H Choi
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - S Cho
- Korea Advanced Institute of Science and Technology, Daejeon, Korea, Republic of (South) Korea
| | - J S Kim
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
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Chang J, Lee J, Vicini FA, Kim JS, Kim J, Choi SH, Byun HK, Lee IJ, Kim YB. Comparison of Early Outcomes of Stereotactic Accelerated Partial Breast Irradiation vs. Volumetric Modulated Arc Therapy-Based FAST-FORWARD Whole Breast Irradiation for Breast Cancer. Int J Radiat Oncol Biol Phys 2023; 117:e167-e168. [PMID: 37784770 DOI: 10.1016/j.ijrobp.2023.06.1005] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Despite evidence supporting APBI from 8 published prospective randomized trials enrolling over 10,000 women, the uptake of APBI in clinical practice is surprisingly low. This is being exacerbated by a new, convenient, and safe shortened WBI schedule. Here, we report the dosimetric and early outcome analyses of the first >1000 patients treated at our institution since the first adoption of stereotactic APBI and the ultra-hypofractionated WBI regimen. MATERIALS/METHODS From 2016 to 2022, 801 women with breast cancers in the suitable or cautionary categories according to the ASTRO APBI consensus panel guidelines, received 30 Gy in 5 fractions (92%) either using a robotic stereotactic radiation system (83%) or stereotactic volumetric-based arc therapy (VMAT, 17%). Between 2020 and 2022, 468 women, who were not candidates for APBI and not undergoing any regional irradiation received 26 Gy in 5 fractions using VMAT to the whole breast with the addition of cardiac sparing technique in left-sided breast cancer patients. Tumor bed boosts were delivered in 99% of FF-WBI patients. We evaluated dose-volume histogram parameters for target volumes and organs-at-risk and radiation-related toxicities during RT or within 6 months after the end of RT. RESULTS Target volume coverage was acceptable in both groups, with mean 96% of the target volumes receiving 95% of the prescribed doses and 0 cm3 within target volumes exceeding 105% of the prescribed doses. S-APBI resulted in small, but statistically significant, reductions in the radiation dose delivered to the ipsilateral breast, contralateral breast, lungs, heart, and coronary artery compared with FF-WBI. Comparing WBI to APBI, the mean contralateral breast dose, ipsilateral lung V20 Gy, mean contralateral lung dose, and mean heart dose, were reduced by 89%, 78%, 73%, and 29%, respectively. With median follow-up periods of 32 months for s-APBI and 19 months for FF-WBI, acute toxicity was assessable in all patients. The risks of any grade acute toxicity were 21% for s-APBI and 25% for FF-WBI (p = .117). Among them, grade 2 rates were 1.3% in both groups and no severe toxicity has been reported. CONCLUSION We found s-APBI and VMAT-based FF WBI were associated with favorable dosimetric and acute toxicity profiles. However, considering significantly less irradiated volume in the breast, lungs, and heart, APBI with advanced available technique options should be considered over any WBI-based approach for patients at low risk for local recurrence.
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Affiliation(s)
- J Chang
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J Lee
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea; Inha University Hospital, Inha University College of Medicine, Incheon, Korea, Republic of (South) Korea
| | - F A Vicini
- Department of Radiation Oncology, GenesisCare, Farmington Hills, MI
| | - J S Kim
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J Kim
- Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - S H Choi
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - H K Byun
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - I J Lee
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - Y B Kim
- Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
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Lee DN, Park JY, Seo YW, Jin X, Hong J, Bhattacharyya A, Noh I, Choi SH. Photo-crosslinked gelatin methacryloyl hydrogel strengthened with calcium phosphate-based nanoparticles for early healing of rabbit calvarial defects. J Periodontal Implant Sci 2023; 53:321-335. [PMID: 36919004 PMCID: PMC10627735 DOI: 10.5051/jpis.2203220161] [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: 07/12/2022] [Revised: 10/16/2022] [Accepted: 10/24/2022] [Indexed: 02/05/2023] Open
Abstract
PURPOSE The aim of this study was to investigate the efficacy of photo-crosslinked gelatin methacryloyl (GelMa) hydrogel containing calcium phosphate nanoparticles (CNp) when applying different fabrication methods for bone regeneration. METHODS Four circular defects were created in the calvaria of 10 rabbits. Each defect was randomly allocated to the following study groups: 1) the sham control group, 2) the GelMa group (defect filled with crosslinked GelMa hydrogel), 3) the CNp-GelMa group (GelMa hydrogel crosslinked with nanoparticles), and 4) the CNp+GelMa group (crosslinked GelMa loaded with nanoparticles). At 2, 4, and 8 weeks, samples were harvested, and histological and micro-computed tomography analyses were performed. RESULTS Histomorphometric analysis showed that the CNp-GelMa and CNp+GelMa groups at 2 weeks had significantly greater total augmented areas than the control group (P<0.05). The greatest new bone area was observed in the CNp-GelMa group, but without statistical significance (P>0.05). Crosslinked GelMa hydrogel with nanoparticles exhibited good biocompatibility with a minimal inflammatory reaction. CONCLUSIONS There was no difference in the efficacy of bone regeneration according to the synthesized method of photo-crosslinked GelMa hydrogel with nanoparticles. However, these materials could remain within a bone defect up to 2 weeks and showed good biocompatibility with little inflammatory response. Further improvement in mechanical properties and resistance to enzymatic degradation would be needed for the clinical application.
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Affiliation(s)
- Da-Na Lee
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Jin-Young Park
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
- Medical & Dental Devices Usability Test Center, Yonsei University Dental Hospital, Seoul, Korea
| | - Young-Wook Seo
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Xiang Jin
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Jongmin Hong
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, Korea
| | - Amitava Bhattacharyya
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, Korea
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, Korea
| | - Insup Noh
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, Seoul, Korea
- Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology, Seoul, Korea
| | - Seong-Ho Choi
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
- Medical & Dental Devices Usability Test Center, Yonsei University Dental Hospital, Seoul, Korea.
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Choi SH, Heo SJ, Seol M, Yoon HI. Association of Single Nucleotide Polymorphisms in Transforming Growth Factor-β1 Pathway and Risk of Radiation Pneumonitis in Lung Cancer Patients Treated with Thoracic Radiation Therapy. Int J Radiat Oncol Biol Phys 2023; 117:e12. [PMID: 37784667 DOI: 10.1016/j.ijrobp.2023.06.673] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Several clinical and dosimetric parameters are known to be associated with radiation-induced lung toxicity, including radiation pneumonitis (RP). Also, single nucleotide polymorphisms (SNPs) of genes in TGF-β1 pathway have a notable association with the RP. However, studies on the predictive value of SNPs for RP are still limited. Herein, we tried to develop a novel integrated predictive model for severe RP in lung cancer patients. MATERIALS/METHODS A total of 59 patients who were treated with definitive or preoperative radiotherapy for primary lung cancer and had DNA samples were included. Potentially functional and tagging SNPs of TGF-β1 (rs1800469, rs1800471, rs1982073, and rs11466345), BMP2 (rs235768, rs3178250, rs1979855, and rs170986), and BMP4 (rs17563, rs4898820, and rs762642) were genotyped. Logistic regression was performed to build severe (grade ≥2) RP prediction models, and best subset selection algorithm with L0 and L2 regulations was used for variable selection. Only clinical/dosimetric variables were evaluated in model 1, and those variables as well as SNPs were included in model 2. Using beta coefficient obtained by the logistic regression, a scoring system was also developed. RESULTS With median follow-up of 39.7 months, severe RP occurred in 20.3% of patients. In model 1, age (>66) and PTV volume (≥300 cc) were significant factors (p = 0.016, OR 8.820 [95% CI, 1.730-63.800]; and p = 0.024, OR 7.440 [95% CI, 1.460-52.100], respectively). In model 2, the above two factors (p = 0.010, OR 16.200 [95% CI, 2.440-187.000] and p = 0.025, OR 10.100 [95% CI, 1.610-105.000]) and the AG/GG genotype in BMP2 rs1979855 were significant factors (p = 0.031, OR 7.260 [95% CI, 1.380-59.100]). The AUC was significantly higher in model 2 than in model 1 (0.822 vs. 0.741, p = 0.029). According to developed scoring system, patients with a score >2.8 are more likely to experience severe RP (AUC 0.829). CONCLUSION BMP2 rs1979855 could serve as a reliable biomarker for predicting RP while significantly improving predictive power compared to when only clinical factors were used.
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Affiliation(s)
- S H Choi
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - S J Heo
- Division of Biostatistics, Department of Biomedical Systems Informatics, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - M Seol
- Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - H I Yoon
- Department of Radiation Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
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Ryu HJ, Lee JH, Park CK, Kim TM, Choi SH, Lee ST. Distribution and Failure Patterns of Primary Central Nervous System Lymphoma Related to Hippocampus. Int J Radiat Oncol Biol Phys 2023; 117:S160-S161. [PMID: 37784403 DOI: 10.1016/j.ijrobp.2023.06.253] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Hippocampus (HC) injury by conventional whole brain radiotherapy (C-WBRT) contributes to the neurocognitive decline in primary central nervous system lymphoma (PCNSL). Hippocampal avoidance (HA-WBRT) could minimize neurocognitive impairment by reducing the radiation dose to HC. However, its feasibility in PCNSL has not been examined regarding the incidence of HC involvement and failures. In this retrospective study, we assessed the risk of hippocampal area involvement at diagnosis and after treatments in PCNSL patients. MATERIALS/METHODS We identified 278 immunocompetent PCNSL patients diagnosed between 2000 and 2020. After high dose methotrexate-based induction chemotherapy, patients were observed or given consolidation therapy including RT, cytarabine alone, or autologous stem cell transplantation (ASCT). HC was contoured on T1 MRI image and expanded with a 5mm margin, generating hippocampal avoidance region (HAR). The extent of initial and recurrent lesions was evaluated using pre-induction and post-consolidation T1 contrast-enhanced MRI images. HC failure was defined as recurrence or progression at HAR and those who progressed after induction were excluded. The median follow up was 38.7 months (3.1-239.4). RESULTS Of 278 patients diagnosed with PCNSL, 39.9% of them had initial lesions at HAR (Figure 1a). After induction therapy, 212 evaluable patients received following treatments: RT (n = 145, 68.4%) consisting of C-WBRT (n = 114), HA-WBRT (n = 23), and focal RT (n = 8), observation (n = 38, 17.9%), cytarabine only (24, 11.3%), and ASCT (n = 5, 2.4%). Intracranial failures occurred in 47.6% (n = 101) of patients, with 33.7% (n = 34) of them in HAR (Figure 1b). The multivariate analysis identified multifocal disease (HR 3.86, 95% CI 1.15-9.73, p = 0.004) as the only factor associated with the risk of HC failure. Those with unifocal lesion outside HAR showed the lowest HC failure rate, 7.0%, while the highest HC failure rate, 25.4% was observed in the subgroup with multifocal disease within HAR at diagnosis (Figure 2a). In the lowest risk group (unifocal lesion outside HAR, n = 66), C-WBRT was not significantly associated with HC failure (HR 0.57, CI 0.09-3.33, P = .572, Figure 2b) or intracranial failure (HR 0.88, CI 0.40-1.91, P = .748). CONCLUSION Our data suggest the HA-WBRT could be explored in patients whose lesion is unifocal and located outside HAR. For patients without initial HAR involvement, hippocampal including WBRT did not significantly change HC failure. Further prospective study will be warranted to assess the feasibility of HA-WBRT in the subgroup with low risk of HC failure.
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Affiliation(s)
- H J Ryu
- Department of Radiation Oncology, Seoul National University Hospital, Seoul, Korea, Republic of (South) Korea; Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J H Lee
- Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea, Republic of (South) Korea; Department of Radiation Oncology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - C K Park
- Department of Neurosurgery, Seoul National University Hospital, Seoul, Korea, Republic of (South) Korea
| | - T M Kim
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea, Republic of (South) Korea
| | - S H Choi
- Department of Radiology, Seoul National University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - S T Lee
- Department of Neurology, Seoul National University Hospital, Seoul, Korea, Republic of (South) Korea
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Park YI, Choi SH, Hong CS, Cho MS, Son J, Han MC, Kim J, Kim H, Kim DW, Kim JS. A Photograph-Based Visualization and Prediction Framework for Radiation-Induced Dermatitis. Int J Radiat Oncol Biol Phys 2023; 117:e480-e481. [PMID: 37785522 DOI: 10.1016/j.ijrobp.2023.06.1701] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) This study aimed to suggest a photograph-based prediction system for acute radiation-induced dermatitis (RID), which can be applied to notify patients about the risk of the development of skin discomfort during radiotherapy. MATERIALS/METHODS The proposed system compared the spatial dose distribution with the RID region using the following methods. Skin photographs of patients were taken using an RGB-depth camera to acquire the shape information of RID. The skin surface data measured from the camera was registered with the shape of the external body contour using an iterative closest point algorithm. Spatial dose distribution of skin was extracted from the external body contour to a depth of 2 mm and projected onto the plane of the skin photograph using a transformation matrix for skin depth data. To compare the spatial distribution of skin dose with the shape of RID, the region of RID in patients' skin was delineated on photographs into three toxicity symptoms referring to the CTCAE criteria grade 1 (skin redness), grade 2 (dry desquamation), and grade 3 (moist desquamation). The degree of overlap between the shape of each RID and skin dose distribution was evaluated using the dice similarity coefficient (DSC). Threshold doses for predicting RID occurrence were estimated by skin isodose lines with the highest DSC. The developed system was validated using data from 19 patients who received volumetric modulated arc therapy for head-neck cancer at a single institution. RESULTS Threshold doses for RID grades 1, 2, and 3 were estimated using 18, 18, and 2 individual RID labels delineated on skin photographs, respectively. Isodose lines with the highest DSC for RID grades 1, 2, and 3 were calculated as 26.0 Gy, 36.5 Gy, and 54.0 Gy, respectively. A strong overlap (average DSC > 0.6) was observed between isodose skin lines and the shape of RID labels in all RID grades. CONCLUSION Assessing the spatial information of skin dose can be helpful in predicting acute RID. The region of RID shows a strong similarity with the skin dose distribution in head-neck patients. Visualization of skin dose on the patient photograph is potent to patient education for preparing the cosmetic discomfort during radiotherapy, which may lead to the improvement of the patient satisfaction in treatment.
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Affiliation(s)
- Y I Park
- Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea; Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - S H Choi
- Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea; Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - C S Hong
- Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea; Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - M S Cho
- Department of Radiation Oncology, Yongin Severance Hospital, Yonsei University College of Medicine, Gyeonggi-do, Korea, Republic of (South) Korea
| | - J Son
- Department of Radiation Oncology, Yongin Severance Hospital, Yonsei University College of Medicine, Gyeonggi-do, Korea, Republic of (South) Korea
| | - M C Han
- Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea; Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J Kim
- Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea; Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - H Kim
- Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea; Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - D W Kim
- Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea; Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J S Kim
- Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea; Department of Radiation Oncology, Yonsei Cancer Center, Heavy Ion Therapy Research Institute, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
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Kim JW, Lee BA, Park YS, Chung J, Choi SH, Kim YT. Efficacy of active noise-canceling headphones in patients undergoing ultrasonic scaling. J Periodontal Implant Sci 2023; 53:269-282. [PMID: 36468488 PMCID: PMC10465812 DOI: 10.5051/jpis.2202200110] [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: 04/27/2022] [Revised: 07/24/2022] [Accepted: 08/19/2022] [Indexed: 08/29/2023] Open
Abstract
PURPOSE Dental fear hinders patients from receiving appropriate dental treatment. In particular, the noise generated by high-speed air turbines and ultrasonic scalers can adversely affect patients. Many efforts have been made to reduce the discomfort caused by noise, but no methods are definitively recommended. The purpose of this study was to determine the efficacy of active noise-canceling (ANC) headphones in reducing the pain and discomfort associated with dental scaling. METHODS Fifty-five patients requiring scaling and root planing, aged ≥19 years and showing no auditory problems, were included. Scaling was performed for the bilateral maxillary molars and premolars while patients wore headphones, with ANC turned either on or off. The degree of noise and pain reduction in the on and off conditions were surveyed using a visual analog scale (VAS). The Wilcoxon signed-rank test was performed to compare noise- and pain-related discomfort with ANC turned on and off. RESULTS The sample included 28 men and 27 women with a mean age of 45.45±13.12 years. The average noise-related discomfort score was 3.84±2.12 and 2.95±1.99 when noise-canceling was turned off and on, respectively, with a statistically significant difference (P<0.05). Similarly, the average pain-related discomfort score was 3.78±2.00 and 3.09±1.96 when noise-canceling was turned off and on, respectively, which was a statistically significant difference (P<0.05). CONCLUSIONS The use of ANC headphones seems to reduce the discomfort caused by noise and pain in patients undergoing scaling. TRIAL REGISTRATION Clinical Research Information Service Identifier: KCT0007093.
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Affiliation(s)
- Jeong-Woong Kim
- Department of Periodontology, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Bo-Ah Lee
- Department of Periodontology, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Yu-Seon Park
- Department of Periodontology, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Jinho Chung
- Department of Periodontology, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Seong-Ho Choi
- Department of Periodontology, Research Institute of Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, Korea
| | - Young-Taek Kim
- Department of Periodontology, National Health Insurance Service Ilsan Hospital, Goyang, Korea.
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Jin X, Park JY, Lee JS, Jung UW, Choi SH, Cha JK. Tissue integration patterns of non-crosslinked and crosslinked collagen membranes: an experimental in vivo study. J Periodontal Implant Sci 2023; 53:207-217. [PMID: 36468485 PMCID: PMC10315255 DOI: 10.5051/jpis.2203260163] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 07/15/2022] [Revised: 09/25/2022] [Accepted: 10/12/2022] [Indexed: 11/26/2023] Open
Abstract
PURPOSE Non-crosslinked and crosslinked collagen membranes are known to exhibit distinct degradation characteristics, resulting in contrasting orientations of the adjacent tissues and different biological processes. The aim of this study was to conduct a histomorphometric assessment of non-crosslinked and crosslinked collagen membranes regarding neovascularization, tissue integration, tissue encapsulation, and biodegradation. METHODS Guided bone regeneration was performed using either a non-crosslinked (BG) or a crosslinked collagen membrane (CM) in 15 beagle dogs, which were euthanized at 4, 8, and 16 weeks (n=5 each) for histomorphometric analysis. The samples were assessed regarding neovascularization, tissue integration, encapsulation, the remaining membrane area, and pseudoperiosteum formation. The BG and CM groups were compared at different time periods using nonparametric statistical methods. RESULTS The remaining membrane area of CM was significantly greater than that of BG at 16 weeks; however, there were no significant differences at 4 and 8 weeks. Conversely, the neovascularization score for CM was significantly less than that for BG at 16 weeks. BG exhibited significantly greater tissue integration and encapsulation scores than CM at all time periods, apart from encapsulation at 16 weeks. Pseudoperiosteum formation was observed in the BG group at 16 weeks. CONCLUSIONS Although BG membranes were more rapidly biodegraded than CM membranes, they were gradually replaced by connective tissue with complete integration and maturation of the surrounding tissues to form dense periosteum-like connective tissue. Further studies need to be performed to validate the barrier effect of the pseudoperiosteum.
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Affiliation(s)
- Xiang Jin
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Jin-Young Park
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
- Innovation Research and Support Center for Dental Science, Yonsei University Dental Hospital, Seoul, Korea
| | - Jung-Seok Lee
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
- Innovation Research and Support Center for Dental Science, Yonsei University Dental Hospital, Seoul, Korea
| | - Ui-Won Jung
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Seong-Ho Choi
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
- Innovation Research and Support Center for Dental Science, Yonsei University Dental Hospital, Seoul, Korea
| | - Jae-Kook Cha
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
- Innovation Research and Support Center for Dental Science, Yonsei University Dental Hospital, Seoul, Korea.
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Choi SH, Park JY, Kweon OJ, Park JH, Kim MC, Lim Y, Chung JW. Immune Responses After Vaccination With Primary 2-Dose ChAdOx1 Plus a Booster of BNT162b2 or Vaccination With Primary 2-Dose BNT162b2 Plus a Booster of BNT162b2 and the Occurrence of Omicron Breakthrough Infection. J Korean Med Sci 2023; 38:e155. [PMID: 37218354 DOI: 10.3346/jkms.2023.38.e155] [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] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 02/05/2023] [Indexed: 05/24/2023] Open
Abstract
BACKGROUND Before the omicron era, health care workers were usually vaccinated with either the primary 2-dose ChAdOx1 nCoV-19 (Oxford-AstraZeneca) series plus a booster dose of BNT162b2 (Pfizer-BioNTech) (CCB group) or the primary 2-dose BNT162b2 series plus a booster dose of BNT162b2 (BBB group) in Korea. METHODS The two groups were compared using quantification of the surrogate virus neutralization test for wild type severe acute respiratory syndrome coronavirus 2 (SVNT-WT), the omicron variant (SVNT-O), spike-specific IgG, and interferon-gamma (IFN-γ), as well as the omicron breakthrough infection cases. RESULTS There were 113 participants enrolled in the CCB group and 51 enrolled in the BBB group. Before and after booster vaccination, the median SVNT-WT and SVNT-O values were lower in the CCB (SVNT-WT [before-after]: 72.02-97.61%, SVNT-O: 15.18-42.29%) group than in the BBB group (SVNT-WT: 89.19-98.11%, SVNT-O: 23.58-68.56%; all P < 0.001). Although the median IgG concentrations were different between the CCB and BBB groups after the primary series (2.677 vs. 4.700 AU/mL, respectively, P < 0.001), they were not different between the two groups after the booster vaccination (7.246 vs. 7.979 AU/mL, respectively, P = 0.108). In addition, the median IFN-γ concentration was higher in the BBB group than in the CCB group (550.5 and 387.5 mIU/mL, respectively, P = 0.014). There was also a difference in the cumulative incidence curves over time (CCB group 50.0% vs. BBB group 41.8%; P = 0.045), indicating that breakthrough infection occurred faster in the CCB group. CONCLUSION The cellular and humoral immune responses were low in the CCB group so that the breakthrough infection occurred faster in the CCB group than in the BBB group.
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Affiliation(s)
- Seong-Ho Choi
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Seoul, Korea
| | - Ji Young Park
- Department of Pediatrics, Chung-Ang University Hospital, Seoul, Korea
| | - Oh Joo Kweon
- Department of Laboratory Medicine, Chung-Ang University Gwangmyeong Hospital, Gwangmyeong, Korea
| | - Joung Ha Park
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Gwangmyeong Hospital, Gwangmyeong, Korea
| | - Min-Chul Kim
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Gwangmyeong Hospital, Gwangmyeong, Korea
| | - Yaeji Lim
- Department of Applied Statistics, Chung-Ang University, Seoul, Korea
| | - Jin-Won Chung
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Seoul, Korea.
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Kim DY, Lee JK, Pang EK, Choi SH, Lee JB. Unique inverse association between allergic rhinitis and periodontitis: a nationwide population-based study. Sci Rep 2023; 13:7444. [PMID: 37156820 PMCID: PMC10167224 DOI: 10.1038/s41598-022-23543-9] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 11/01/2022] [Indexed: 05/10/2023] Open
Abstract
The increase in fine dust levels in the atmosphere has been associated with a growth in the incidence of environmental diseases, including allergic rhinitis (AR). Nasal obstruction caused by AR can impact the conditions in the oral cavity. The aim of this study was to determine the association between AR and periodontitis in the Republic of Korea. This study was based on data from the Seventh Korea National Health and Nutrition Examination Survey (KNHANES VII-1, 2016), which was conducted by the Korea Centers for Disease Control and Prevention. The study included 6129 adults older than 19 years. Sociodemographic information and medical variables including history of treatment of periodontitis (HTP) reflecting diagnosis of periodontitis and diagnosis of diseases such as AR were extracted from the data. HTP and AR were reported for 22.81 ± 0.84% (weighted percentage ± standard error) and 15.32 ± 0.63% of the studied population, respectively. A diagnosis of AR was reported for 11.07 ± 1.28% of those with HTP and for 17.55 ± 1.84% of those without HTP. From these, it was inferred that the prevalence of HTP was 1.536-fold higher in the non-AR group than in their counterparts with AR. Significant association was found between AR and HTP among those aged ≤ 64 years and the odds ratio (OR) of AR group for HTP was 0.62 (95% confidence interval:0.44-0.87; P = 0.0057). From this result, it can be inferred that patients diagnosed AR have lower risk of periodontitis.
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Affiliation(s)
- Dae-Yeob Kim
- Department of Periodontology, Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Jae-Kwan Lee
- Department of Periodontology and Research Institute of Oral Sciences, Gangneung-Wonju National University College of Dentistry, 7 Jukheon-gil, Gangneung, Gangwon-do, 25457, Republic of Korea
| | - Eun-Kyoung Pang
- Department of Periodontology, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Seong-Ho Choi
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
| | - Jong-Bin Lee
- Department of Periodontology and Research Institute of Oral Sciences, Gangneung-Wonju National University College of Dentistry, 7 Jukheon-gil, Gangneung, Gangwon-do, 25457, Republic of Korea.
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Park YI, Choi SH, Hong CS, Cho MS, Son J, Han MC, Kim J, Kim H, Kim DW, Kim JS. A New Approach to Quantify and Grade Radiation Dermatitis Using Deep-Learning Segmentation in Skin Photographs. Clin Oncol (R Coll Radiol) 2023; 35:e10-e19. [PMID: 35918275 DOI: 10.1016/j.clon.2022.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 06/15/2022] [Accepted: 07/06/2022] [Indexed: 01/04/2023]
Abstract
AIMS Objective evaluation of radiation dermatitis is important for analysing the correlation between the severity of radiation dermatitis and dose distribution in clinical practice and for reliable reporting in clinical trials. We developed a novel radiation dermatitis segmentation system based on convolutional neural networks (CNNs) to consistently evaluate radiation dermatitis. MATERIALS AND METHODS The radiation dermatitis segmentation system is designed to segment the radiation dermatitis occurrence area using skin photographs and skin-dose distribution. A CNN architecture with a dilated convolution layer and skip connection was designed to estimate the radiation dermatitis area. Seventy-three skin photographs obtained from patients undergoing radiotherapy were collected for training and testing. The ground truth of radiation dermatitis segmentation is manually delineated from the skin photograph by an experienced radiation oncologist and medical physicist. We converted the skin photographs to RGB (red-green-blue) and CIELAB (lightness (L∗), red-green (a∗) and blue-yellow (b∗)) colour information and trained the network to segment faint and severe radiation dermatitis using three different input combinations: RGB, RGB + CIELAB (RGBLAB) and RGB + CIELAB + skin-dose distribution (RGBLAB_D). The proposed system was evaluated using the Dice similarity coefficient (DSC), sensitivity, specificity and normalised Matthews correlation coefficient (nMCC). A paired t-test was used to compare the results of different segmentation performances. RESULTS Optimal data composition was observed in the network trained for radiation dermatitis segmentation using skin photographs and skin-dose distribution. The average DSC, sensitivity, specificity and nMCC values of RGBLAB_D were 0.62, 0.61, 0.91 and 0.77, respectively, in faint radiation dermatitis, and 0.69, 0.78, 0.96 and 0.83, respectively, in severe radiation dermatitis. CONCLUSION Our study showed that CNN-based radiation dermatitis segmentation in skin photographs of patients undergoing radiotherapy can describe radiation dermatitis severity and pattern. Our study could aid in objectifying the radiation dermatitis grading and analysing the reliable correlation between dosimetric factors and the morphology of radiation dermatitis.
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Affiliation(s)
- Y I Park
- Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, South Korea; Medical Physics and Biomedical Engineering Lab (MPBEL), Yonsei University College of Medicine, Seoul, South Korea
| | - S H Choi
- Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, South Korea; Department of Radiation Oncology, Yongin Severance Hospital, Yongin, South Korea
| | - C-S Hong
- Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, South Korea.
| | - M-S Cho
- Department of Radiation Oncology, Yongin Severance Hospital, Yongin, South Korea
| | - J Son
- Department of Radiation Oncology, Yongin Severance Hospital, Yongin, South Korea
| | - M C Han
- Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, South Korea
| | - J Kim
- Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, South Korea
| | - H Kim
- Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, South Korea
| | - D W Kim
- Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, South Korea
| | - J S Kim
- Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, South Korea; Medical Physics and Biomedical Engineering Lab (MPBEL), Yonsei University College of Medicine, Seoul, South Korea.
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19
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Baek MS, Choi SH, Kim WY, Kim MC, Joo EJ, Lee MS, Kim HA, Jung SI, Nae YS, Kim B, Lim Y, Chung JW. A study on changes in lung function, neutralizing antibodies, and symptoms of adult patients hospitalized with COVID-19. Korean J Intern Med 2023; 38:101-112. [PMID: 36281537 PMCID: PMC9816687 DOI: 10.3904/kjim.2022.050] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 07/18/2022] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND/AIMS To identify changes in symptoms and pulmonary sequelae in patients with coronavirus disease 2019 (COVID-19). METHODS Patients with COVID-19 hospitalized at seven university hospitals in Korea between February 2020 and February 2021 were enrolled, provided they had ≥ 1 outpatient follow-up visit. Between January 11 and March 9, 2021 (study period), residual symptom investigations, chest computed tomography (CT) scans, pulmonary function tests (PFT), and neutralizing antibody tests (NAb) were performed at the outpatient visit (cross-sectional design). Additionally, data from patients who already had follow-up outpatient visits before the study period were collected retrospectively. RESULTS Investigation of residual symptoms, chest CT scans, PFT, and NAb were performed in 84, 35, 31, and 27 patients, respectively. After 6 months, chest discomfort and dyspnea persisted in 26.7% (4/15) and 33.3% (5/15) patients, respectively, and 40.0% (6/15) and 26.7% (4/15) patients experienced financial loss and emotional distress, respectively. When the ratio of later CT score to previous ones was calculated for each patient between three different time intervals (1-14, 15-60, and 61-365 days), the median values were 0.65 (the second interval to the first), 0.39 (the third to the second), and 0.20 (the third to the first), indicating that CT score decreases with time. In the high-severity group, the ratio was lower than in the low-severity group. CONCLUSION In COVID-19 survivors, chest CT score recovers over time, but recovery is slower in severely ill patients. Subjects complained of various ongoing symptoms and socioeconomic problems for several months after recovery.
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Affiliation(s)
- Moon Seong Baek
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul,
Korea
| | - Seong-Ho Choi
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul,
Korea
| | - Won-Young Kim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul,
Korea
| | - Min-Chul Kim
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul,
Korea
| | - Eun-Jeong Joo
- Division of Infectious Diseases, Department of Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul,
Korea
| | - Mi Suk Lee
- Division of Infectious Diseases, Department of Internal Medicine, Kyung Hee University Hospital, College of Medicine, Kyung Hee University, Seoul,
Korea
| | - Hyun Ah Kim
- Department of Infectious Diseases, Keimyung University Dongsan Hospital, Keimyung University School of Medicine, Daegu,
Korea
| | - Sook In Jung
- Department of Infectious Diseases, Chonnam National University Medical School, Gwangju,
Korea
| | - Yu Shi Nae
- Division of Infectious Diseases, Department of Internal Medicine, Soonchunhyang University Cheonan Hospital, Soonchunhyang University College of Medicine, Cheonan,
Korea
| | - Bongyoung Kim
- Division of Infectious Diseases, Department of Internal Medicine, Hanyang University Hospital, Hanyang University College of Medicine, Seoul,
Korea
| | - Yaeji Lim
- Department of Applied Statistics, Chung-Ang University, Seoul,
Korea
| | - Jin-Won Chung
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul,
Korea
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20
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Park JH, Cha MJ, Choi H, Kim MC, Chung JW, Lee KS, Jeong DG, Baek MS, Kim WY, Lim Y, Yoon SW, Choi SH. Relationship between SARS-CoV-2 antibody titer and the severity of COVID-19. J Microbiol Immunol Infect 2022; 55:1094-1100. [PMID: 35570185 PMCID: PMC9069977 DOI: 10.1016/j.jmii.2022.04.005] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 02/14/2022] [Accepted: 04/01/2022] [Indexed: 12/27/2022]
Abstract
BACKGROUND It remains unclear whether high titers of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antibodies aggravate clinical manifestations in patients or whether severe clinical manifestations result in high antibody titers. Thus, we investigated the cause-effect relationship between SARS-CoV-2 antibody titers and disease severity. METHODS We prospectively enrolled patients admitted with the diagnosis of coronavirus disease-19 (COVID-19) from February 2020 to August 2020. We measured SARS-CoV-2 antibody titers, namely anti-receptor-binding domain (RBD) antibody and neutralizing antibody (NAb), from blood samples and calculated the chest radiograph (CXR) scores of the patients to evaluate the severity of COVID-19. RESULTS Overall, 40 patients with COVID-19 were enrolled. Pneumonia was observed in more than half of the patients (25/40, 60%). SARS-CoV-2 antibody titers were higher in patients who were aged >60 years (anti-RBD antibodies, P = 0.003 and NAb, P = 0.009), presented with pneumonia (P = 0.006 and 0.007, respectively), and required oxygen therapy (P = 0.003 and 0.004, respectively) than in those who were not. CXR scores peaked (at 15-21 days after the onset of symptoms) statistically significantly earlier than SARS-CoV-2 antibody titers (at 22-30 days for NAb and at 31-70 days for anti-RBD antibody). There was a close correlation between the maximum CXR score and the maximum SAR-CoV-2 antibody titer. CONCLUSIONS Based on the comparison of the peak time of SARS-CoV-2 antibody titers with the CXR score after symptom onset, we suggest that severe clinical manifestations result in high titers of SARS-CoV-2 antibodies.
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Affiliation(s)
- Joung Ha Park
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Gwangmyeong Hospital, Gwangmyeong, South Korea
| | - Min Jae Cha
- Department of Radiology, Chung-Ang University Hospital, Seoul, South Korea
| | - Hyewon Choi
- Department of Radiology, Chung-Ang University Hospital, Seoul, South Korea
| | - Min-Chul Kim
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Gwangmyeong Hospital, Gwangmyeong, South Korea
| | - Jin-Won Chung
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Seoul, South Korea
| | - Kyu-Sun Lee
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, South Korea
| | - Dae Gwin Jeong
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, South Korea
| | - Moon Seong Baek
- Department of Internal Medicine, Chung-Ang University Hospital, Seoul, South Korea
| | - Won-Young Kim
- Department of Internal Medicine, Chung-Ang University Hospital, Seoul, South Korea
| | - Yaeji Lim
- Department of Applied Statistics, Chung-Ang University, Seoul, South Korea
| | - Sun Woo Yoon
- Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, South Korea,Corresponding author. Bionanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, South Korea
| | - Seong-Ho Choi
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Seoul, South Korea,Corresponding author. Fax: +82 2 6299 2064
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21
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Chung H, Seo H, Choi SH, Park CK, Kim TM, Park SH, Won JK, Lee JH, Lee ST, Lee JY, Hwang I, Kang KM, Yun TJ. Cluster Analysis of DSC MRI, Dynamic Contrast-Enhanced MRI, and DWI Parameters Associated with Prognosis in Patients with Glioblastoma after Removal of the Contrast-Enhancing Component: A Preliminary Study. AJNR Am J Neuroradiol 2022; 43:1559-1566. [PMID: 36175084 PMCID: PMC9731243 DOI: 10.3174/ajnr.a7655] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2022] [Accepted: 08/21/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND AND PURPOSE No report has been published on the use of DSC MR imaging, DCE MR imaging, and DWI parameters in combination to create a prognostic prediction model in glioblastoma patients. The aim of this study was to develop a machine learning-based model to find preoperative multiparametric MR imaging parameters associated with prognosis in patients with glioblastoma. Normalized CBV, volume transfer constant, and ADC of the nonenhancing T2 high-signal-intensity lesions were evaluated using K-means clustering. MATERIALS AND METHODS A total of 142 patients with glioblastoma who underwent preoperative MR imaging and total resection were included in this retrospective study. From the normalized CBV, volume transfer constant, and ADC maps, the parametric data were sorted using the K-means clustering method. Patients were divided into training and test sets (ratio, 1:1), and the optimal number of clusters was determined using receiver operating characteristic analysis. Kaplan-Meier survival analysis and log-rank tests were performed to identify potential parametric predictors. A multivariate Cox proportional hazard model was conducted to adjust for clinical predictors. RESULTS The nonenhancing T2 high-signal-intensity lesions were divided into 6 clusters. The cluster (class 4) with the relatively low normalized CBV and volume transfer constant value and the lowest ADC values was most associated with predicting glioblastoma prognosis. The optimal cutoff of the class 4 volume fraction of nonenhancing T2 high-signal-intensity lesions predicting 1-year progression-free survival was 9.70%, below which the cutoff was associated with longer progression-free survival. Two Kaplan-Meier curves based on the cutoff value showed a statistically significant difference (P = .037). When we adjusted for all clinical predictors, the cluster with the relatively low normalized CBV and volume transfer constant values and the lowest ADC value was an independent prognostic marker (hazard ratio, 3.04; P = .048). The multivariate Cox proportional hazard model showed a concordance index of 0.699 for progression-free survival. CONCLUSIONS Our model showed that nonenhancing T2 high-signal-intensity lesions with the relatively low normalized CBV, low volume transfer constant values, and the lowest ADC values could serve as useful prognostic imaging markers for predicting survival outcomes in patients with glioblastoma.
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Affiliation(s)
- H Chung
- From the Seoul National University College of Medicine (H.C., H.S.), Seoul, Korea
| | - H Seo
- From the Seoul National University College of Medicine (H.C., H.S.), Seoul, Korea
| | - S H Choi
- Department of Radiology (S.H.C., J.Y.L., I.H., K.M.K., T.J.Y.), Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
- Center for Nanoparticle Research (S.H.C.), Institute for Basic Science, Seoul, Korea
- School of Chemical and Biological Engineering (S.H.C.), Seoul National University, Seoul, Korea
| | - C-K Park
- Department of Neurosurgery (C.-K.P.), Internal Medicine
| | - T M Kim
- Cancer Research Institute (T.M.K.)
| | - S-H Park
- Departments of Pathology (S.-H.P., J.K.W.), Radiation Oncology
| | - J K Won
- Departments of Pathology (S.-H.P., J.K.W.), Radiation Oncology
| | - J H Lee
- Cancer Research Institute (J.H.L.)
| | - S-T Lee
- Neurology (S.-T.L.), Seoul National University Hospital, Seoul, Korea
| | - J Y Lee
- Department of Radiology (S.H.C., J.Y.L., I.H., K.M.K., T.J.Y.), Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - I Hwang
- Department of Radiology (S.H.C., J.Y.L., I.H., K.M.K., T.J.Y.), Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - K M Kang
- Department of Radiology (S.H.C., J.Y.L., I.H., K.M.K., T.J.Y.), Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - T J Yun
- Department of Radiology (S.H.C., J.Y.L., I.H., K.M.K., T.J.Y.), Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
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22
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Choi SH, Park SD, Lee MJ, Lee KJ. Comparison of trans-radial access and femoral access in cardiogenic shock patient who had undergone primary percutaneous coronary intervention from SMART RESCUE trial. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1246] [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
Introduction
Throughout the years of percutaneous coronary intervention (PCI), the debate regarding access route, whether it being trasns-radial or femoral, is an ongoing agenda yet to be solved. Recent guidelines suggest trans-radial approach as an option to be considered in acute coronary syndrome (ACS). However, data on cardiogenic shock patients undergoing PCI is relatively sparse.
Purpose
Compare the clinical implication of trans-radial and femoral approach in cardiogenic shock patients who had undergone PCI.
Method
Cardiogenic shock patients who had undergone PCI from January 2014 to December of 2018 were enrolled. Patients were divided according to their access route respectfully. Primary outcome was composite endpoints including all-cause death, re-admission due to heart failure, myocardial infarction (MI) and cerebrovascular accident.
Result
A total of 694 (572 via femoral approach, 122 via radial approach) cardiogenic shock patients who received PCI were enrolled. Mean age femoral and radial groups was 66.59±12.51 and 66.66±12.8 respectfully. Disease severity was higher for femoral patients compared to radial patients as represented by their LM involvement, mechanical organ support (extracorporeal membrane oxygenation, continuous renal replacement therapy, mechanical ventilation), left ventricular ejection fraction (LVEF) and vasoactive inotropic score. Cox regression analysis after adjusting for conventional risk factors showed that femoral route was a poor prognosticator with respect to composite endpoints (HR=2.059, 95% CI 1.249–3.397, p value = 0.005). Radial approach patients had higher survival probability compared to femoral approach patients (Figure 1).
Conclusion
Radial approach in cardiogenic shock patients who are in need for PCI with relatively less severe clinical condition could be a reasonable option for access route.
Funding Acknowledgement
Type of funding sources: Private hospital(s). Main funding source(s): Inha University Hospital
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Affiliation(s)
- S H Choi
- Inha University Hospital, Cardiology , Incheon , Korea (Republic of)
| | - S D Park
- Inha University Hospital, Cardiology , Incheon , Korea (Republic of)
| | - M J Lee
- Inha University Hospital, Critical Care Medicine , Incheon , Korea (Republic of)
| | - K J Lee
- Inha University Hospital, Cardiology , Incheon , Korea (Republic of)
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23
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Choi SH, Park SD, Lee MJ, Ko YG, Yu CW, Chun WJ, Jang WJ, Kim HJ, Bae JW, Kwon SU, Kim JS, Lee WS, Jeong JO, Lim SH, Yang JH. Prognostic impact of plasma glucose on cardiogenic shock patients with or without diabetes ellitus: smart rescue trial. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1442] [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
Even though the presence of hyperglycemia has shown to affect the clinical outcome of cardiogenic shock patients, the extent of hyperglycemia and its association with prognosis have not been fully addressed in large population
Purpose
Investigate the clinical relationship between hyperglycemic status and in-hospital mortality in cardiogenic shock patients
Method
A total of 1,177 consecutive cardiogenic shock patients were enrolled from January 2014 to December of 2018 at 12 hospitals in South Korea. The primary outcome was in-hospital mortality. Patients were divided into four groups according to their initial plasma glucose level in each of diabetes patients (n=752) and non-diabetes patients (n=425); group 1 (≤8 mmol/L), group 2 (8–12 mmol/L), group 3 (12–16 mmol/L) and group 4 (≥16 mmol/L).
Results
The groups with higher admission plasma glucose were associated with lower systolic blood pressure and higher lactic acid level in both diabetic and non-diabetic patients. In-hospital mortality increased in groups with higher admission plasma glucose level in non-diabetic patients (group-1:24.2%, group-2: 28.6%, group-3: 38.1%, group-4: 49.0%, p<0.01) whereas in diabetic patients, mortality and admission plasma glucose level showed no significant association (group-1: 45%, group-2: 35.4%, group-3: 33.3%, group-4: 43.1%, p=0.26). Even after Multivariate analysis, high plasma glucose was an independent predictor of in-hospital mortality in non-diabetic patients
Conclusion
In cardiogenic shock patients, plasma glucose obtained at admission was associated with in-hospital mortality in non-diabetic patients
Funding Acknowledgement
Type of funding sources: Private hospital(s). Main funding source(s): Inha University hospital
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Affiliation(s)
- S H Choi
- Inha University Hospital, Cardiology , Incheon , Korea (Republic of)
| | - S D Park
- Inha University Hospital, Cardiology , Incheon , Korea (Republic of)
| | - M J Lee
- Inha University Hospital, Cardiology , Incheon , Korea (Republic of)
| | - Y G Ko
- Severance Cardiovascular Hospital, Yonsei University College of Medicine, Cardiology , Seoul , Korea (Republic of)
| | - C W Yu
- Korea University Anam Hospital, Cardiology , Seoul , Korea (Republic of)
| | - W J Chun
- Samsung Changwon Hospital, Cardiology , Changwon , Korea (Republic of)
| | - W J Jang
- Ewha Womans University Seoul Hospital, Cardiology , Seoul , Korea (Republic of)
| | - H J Kim
- Konkuk University Hospital, Cardiology , Seoul , Korea (Republic of)
| | - J W Bae
- Chungbuk National University College of Medicine, Cardiology , Cheongju , Korea (Republic of)
| | - S U Kwon
- Inje University Ilsan Paik hospital, Cardiology , Goyang , Korea (Republic of)
| | - J S Kim
- Sejong General Hospital, Cardiology , Bucheon , Korea (Republic of)
| | - W S Lee
- Chung-Ang University Hospital, Cardiology , Seoul , Korea (Republic of)
| | - J O Jeong
- Chungnam National University hospital , Daejeon , Korea (Republic of)
| | - S H Lim
- Dankook University, Cardiology , Cheonan-si , Korea (Republic of)
| | - J H Yang
- Samsung Medical Center, Cardiology , Seoul , Korea (Republic of)
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24
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Kwon W, Yang JH, Lee SH, Choi KH, Park TK, Lee JM, Song YB, Hahn JY, Choi SH, Ahn CM, Ko YG, Yu CW, Jang WJ, Kim HJ, Kwon SU. Impact of obesity paradox between genders on in-hospital mortality in cardiogenic shock: a retrospective cohort study. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
In a few studies, obesity was associated with better outcomes in patients with cardiogenic shock (CS). Although this phenomenon, the “obesity paradox”, reportedly manifests differently based on sex in other disease entities, it has not yet been investigated in CS patients.
Methods and results
1,227 patients with CS from The REtrospective and prospective observational Study to investigate Clinical oUtcomes and Efficacy of left ventricular assist device for Korean patients with cardiogenic shock (RESCUE) registry in Korea were analyzed. The study population was classified into obese and non-obese groups according to Asian-Pacific criteria (BMI >25.0 kg/m2 for obese). Clinical impact of obesity on in-hospital mortality according to sex was analyzed using logistic regression analysis and restricted cubic spline curves. In-hospital mortality rate was significantly lower in obese men than non-obese men (34.2% vs. 24.1%, p=0.004) while the difference was not significant in women (37.3% vs. 35.8%, p=0.884). As a continuous variable, higher BMI showed a protective effect in men conversely, BMI was not associated with clinical outcomes in women. Comparing to normal-weight patients, obesity was associated with a decreased risk of in-hospital death in men (multivariable-adjusted OR 0.63, CI 0.43–0.92, p=0.016), not in women (multivariable-adjusted OR 0.94, 95% CI 0.55–1.61, p=0.828). Interaction P value for the association between BMI and sex was 0.023.
Conclusions
Obesity paradox exists and apparently occurs in men among CS patients. The differential effect of BMI on in-hospital mortality was observed according to sex.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- W Kwon
- Samsung Medical Center , Seoul , Korea (Republic of)
| | - J H Yang
- Samsung Medical Center , Seoul , Korea (Republic of)
| | - S H Lee
- Chonnam National University Hospital , Gwangju , Korea (Republic of)
| | - K H Choi
- Samsung Medical Center , Seoul , Korea (Republic of)
| | - T K Park
- Samsung Medical Center , Seoul , Korea (Republic of)
| | - J M Lee
- Samsung Medical Center , Seoul , Korea (Republic of)
| | - Y B Song
- Samsung Medical Center , Seoul , Korea (Republic of)
| | - J Y Hahn
- Samsung Medical Center , Seoul , Korea (Republic of)
| | - S H Choi
- Samsung Medical Center , Seoul , Korea (Republic of)
| | - C M Ahn
- Yonsei Cardiovascular Center , Seoul , Korea (Republic of)
| | - Y G Ko
- Yonsei Cardiovascular Center , Seoul , Korea (Republic of)
| | - C W Yu
- Korea University Anam Hospital , Seoul , Korea (Republic of)
| | - W J Jang
- Ewha Womans University Seoul Hospital , Seoul , Korea (Republic of)
| | - H J Kim
- Konkuk University Hospital , Seoul , Korea (Republic of)
| | - S U Kwon
- Inje University Sanggye Paik Hospital , Seoul , Korea (Republic of)
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25
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Bak M, Choi KH, Kim JH, Park TK, Kim EK, Kim SM, Choi SH, Park SJ. Risk factors and clinical effects of late leaflet thrombosis after transcatheter aortic valve replacement. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1569] [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
As the indications for trans-catheter aortic valve replacement (TAVR) expand, it is expected that the number of TAVR patients would increase and the follow-up duration would be longer. It is known that the incidence of leaflet thrombosis is higher in TAVR than in surgical aortic valve replacement (SAVR), but not much is known about the risk factors of late leaflet thrombosis in TAVR.
Aim
Therefore, in this study, the incidence and risk factors of late leaflet thrombosis at late term after TAVR and the effect on clinical course of late leaflet thrombosis would be investigated.
Method
There were 176 patients undergone TAVR from January 2015 to October 2020 in one tertiary hospital of south korea. 94 patients had follow-up cardiovascular computed tomography (CT) between 3 months and 2 years after TAVR. Among 94 patients, late leaflet thrombosis was discovered at 20 patients, and risk factors were analyzed by comparing clinical factors, echocardiographic and cardiovascular CT information, and angiographic data between the group with and without late leaflet thrombosis. And the difference in aortic valve hemodynamics between the group with and without leaflet thrombosis was examined and clinical outcomes were compared. Clinical outcome was defined as the composite of all-cause death, stroke, heart failure (HF) admission, redo-aortic valve (AV) replacement and major bleeding after detection of late leaflet thrombosis.
Results
Indexed mean sinus of Valsalva diameter, AV calcium score and post procedure estimated orifice area (EOA) had predictability of late leaflet thrombosis with AUC value of 0.670 (95% CI [0.546–0.795], p value = 0.020), AUC value of 0.698 (95% CI [0.544–0.851], p value = 0.012) and AUC value of 0.665 (95 percent CI [0.548–0.782], p value = 0.031), respectively (Figure 1).
In echocardiography performed at the time of follow-up CT, AV max velocity and AV mean pressure gradient were higher in thrombosis group and EOA and Doppler velocity index were lower in thrombosis group than in no thrombosis group within normal range (Figure 2). Clinical outcome was not significant different between the two groups (log rank p value = 0.560).
Conclusion
Larger indexed sinus of Valsalva diameter, higher AV calcium score and smaller post procedure AV EOA were risk factors for late leaflet thrombosis after TAVR. Subclinical late leaflet thrombosis have a benign course when properly managed.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- M Bak
- Samsung Medical Center, Division of Cardiology, Cardiovascular Imaging Center, Heart Vascular Stroke Institute , Seoul , Korea (Republic of)
| | - K H Choi
- Samsung Medical Center , Seoul , Korea (Republic of)
| | - J H Kim
- Samsung Medical Center, Division of Cardiology, Cardiovascular Imaging Center, Heart Vascular Stroke Institute , Seoul , Korea (Republic of)
| | - T K Park
- Samsung Medical Center , Seoul , Korea (Republic of)
| | - E K Kim
- Samsung Medical Center, Division of Cardiology, Cardiovascular Imaging Center, Heart Vascular Stroke Institute , Seoul , Korea (Republic of)
| | - S M Kim
- Samsung Medical Center, Department of Radiology, Cardiovascular Imaging Center, Heart Vascular Stroke Institute , Seoul , Korea (Republic of)
| | - S H Choi
- Samsung Medical Center , Seoul , Korea (Republic of)
| | - S J Park
- Samsung Medical Center, Division of Cardiology, Cardiovascular Imaging Center, Heart Vascular Stroke Institute , Seoul , Korea (Republic of)
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Choi SH, Park JY, Park JH, Kim MC, Kweon OJ, Chung JW. Investigation of the Neutralizing Antibody Response of Healthcare Workers at a Korean University Hospital Six Months After the Introduction of the COVID-19 Vaccine. Ann Lab Med 2022; 42:612-615. [PMID: 35470282 PMCID: PMC9057825 DOI: 10.3343/alm.2022.42.5.612] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/11/2021] [Accepted: 04/07/2022] [Indexed: 11/19/2022] Open
Affiliation(s)
- Seong-Ho Choi
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Ji Young Park
- Department of Pediatrics, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Joung Ha Park
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Min-Chul Kim
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Oh Joo Kweon
- Department of Laboratory Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Jin-Won Chung
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
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Ko KA, Park JY, Lee JS, Ye BS, Jung UW, Choi SH, Cha JK. The Impact of Masticatory Function on Cognitive Impairment in Older Patients: A Population-Based Matched Case-Control Study. Yonsei Med J 2022; 63:783-789. [PMID: 35914761 PMCID: PMC9344271 DOI: 10.3349/ymj.2022.63.8.783] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/24/2022] [Accepted: 05/26/2022] [Indexed: 11/27/2022] Open
Abstract
PURPOSE The aim of this study was to investigate the association between the changes in masticatory function and cognitive impairment by analyzing longitudinal data of older Korean patients. MATERIALS AND METHODS Patients aged over 60 years with dental records between 2005 to 2010 (baseline; T1) and 2014 to 2020 (follow-up; T2) were selected in a single medical center. Based on the dementia diagnosis after T2, the cohort was classified into two groups, the dementia group (n=122) and the control group (n=366). Changes in masticatory function were calculated using the total functional tooth unit (T-FTU) in both groups. The incidence of tooth extraction (%) and the subsequent rehabilitation during the observation period were also evaluated. RESULTS In the dementia group, T-FTU significantly decreased from T1 to T2 (9.81±2.78 to 9.11±3.16, respectively, p=0.008), while no significant change was observed in the control group. During the mean observation period of 9 years, significantly more teeth were extracted and neglected to be prosthetically restored in the dementia group than in the control group. Regression analysis revealed that the number of missing teeth neglected [odds ratio (OR)=1.195, 95% confidence interval (CI)=1.025-1.393, p=0.023] and previous alcohol consumption (OR=4.445, 95% CI=1.831-1.795, p=0.001) were the most significant risk factors of dementia. CONCLUSION There might be a causative relationship between the neglected missing dentition and the onset of dementia.
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Affiliation(s)
- Kyung-A Ko
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
- Innovation Research and Support Center for Dental Science, Yonsei University Dental Hospital, Seoul, Korea
| | - Jin-Young Park
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
- Innovation Research and Support Center for Dental Science, Yonsei University Dental Hospital, Seoul, Korea
| | - Jung-Seok Lee
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
- Innovation Research and Support Center for Dental Science, Yonsei University Dental Hospital, Seoul, Korea
| | - Byoung Seok Ye
- Department of Neurology, Yonsei University College of Medicine, Seoul, Korea
| | - Ui-Won Jung
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Seong-Ho Choi
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
- Innovation Research and Support Center for Dental Science, Yonsei University Dental Hospital, Seoul, Korea
| | - Jae-Kook Cha
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
- Innovation Research and Support Center for Dental Science, Yonsei University Dental Hospital, Seoul, Korea.
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Kim WJ, Choi SH, Park JY, Song JS, Chung JW, Choi ST. SARS-CoV-2 Omicron escapes mRNA vaccine booster-induced antibody neutralisation in patients with autoimmune rheumatic diseases: an observational cohort study. Ann Rheum Dis 2022; 81:1585-1593. [PMID: 35878999 DOI: 10.1136/ard-2022-222689] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [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: 04/22/2022] [Accepted: 07/08/2022] [Indexed: 12/14/2022]
Abstract
OBJECTIVES This study investigates whether COVID-19 vaccines can elicit cross-reactive antibody responses against the Omicron variant in patients with autoimmune rheumatic diseases (ARDs). METHODS This observational cohort study comprised 149 patients with ARDs and 94 healthcare workers (HCWs). Blood samples were obtained at enrolment, a median of 15 weeks after the second vaccine dose or 8 weeks after the third dose. The functional cross-neutralisation capacity of sera was measured using the Omicron variant receptor-binding domain-ACE2 binding inhibition assay. We assessed the incidence of breakthrough infections and the potential correlation with neutralising responses in participants after receiving third doses. The association of time-from-vaccine and neutralising responses in sera was predicted using linear regression analysis. RESULTS The mean cross-neutralising responses against the Omicron variant developed after the second dose was 11.5% in patients with ARDs and 18.1% in HCWs (p=0.007). These responses were significantly lower in patients with ARDs than in HCWs after the third dose (26.8% vs 50.3%, p<0.0001). Only 39.2% of the patient sera showed functional neutralisation capacity to the Omicron variant and cross-neutralising responses were shown to be poorly correlated with anti-spike immunoglobulin G titres. Within 6 weeks of immunological assessments, significantly lower Omicron-neutralising responses were detected in sera from patients with ARDs who developed breakthrough infections compared with those who did not (p=0.018). Additionally, a relative decline was implied in neutralising responses against the Omicron variant as a reference to the wild-type virus during 120 days since the third vaccination, with a predicted decay rate of -0.351%/day (95% CI, -0.559 to -0.144, p=0.001). CONCLUSIONS Striking antibody evasion manifested by the Omicron variant in patients with ARDs and current vaccine-induced immunity may not confer broad protection from Omicron breakthrough infection, highlighting the need for further research on vaccine effectiveness in patients with immune dysfunctions.
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Affiliation(s)
- Woo-Joong Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Korea (the Republic of)
| | - Seong-Ho Choi
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea (the Republic of)
| | - Ji Young Park
- Department of Pediatrics, Chung-Ang University College of Medicine, Seoul, Korea (the Republic of)
| | - Jung Soo Song
- Division of Rheumatology, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea (the Republic of)
| | - Jin-Won Chung
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea (the Republic of)
| | - Sang Tae Choi
- Division of Rheumatology, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea (the Republic of)
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Abstract
With the increase of the adult orthodontic population, there is a need for an accurate and evidence-based prediction of the posttreatment face in 3 dimensions (3D). The objectives of this study are 1) to develop a 3D postorthodontic face prediction method based on a deep learning network using the patient-specific factors and orthodontic treatment conditions and 2) to validate the accuracy and clinical usability of the proposed method. Paired sets (n = 268) of pretreatment (T1) and posttreatment (T2) cone-beam computed tomography (CBCT) of adult patients were trained with a conditional generative adversarial network to generate 3D posttreatment facial data based on the patient's gender, age, and the changes of upper (ΔU1) and lower incisor position (ΔL1) as input. The accuracy was calculated with prediction error and mean absolute distances between real T2 (T2) and predicted T2 (PT2) near 6 perioral landmark regions, as well as percentage of prediction error less than 2 mm using test sets (n = 44). For qualitative evaluation, an online survey was conducted with experienced orthodontists as panels (n = 56). Overall, PT2 indicated similar 3D changes to the T2 face, with the most apparent changes simulated in the perioral regions. The mean prediction error was 1.2 ± 1.01 mm with 80.8% accuracy. More than 50% of the experienced orthodontists were unable to distinguish between real and predicted images. In this study, we proposed a valid 3D postorthodontic face prediction method by applying a deep learning algorithm trained with CBCT data sets.
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Affiliation(s)
- Y S Park
- Department of Orthodontics, The Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Korea
| | - J H Choi
- Smile Future Orthodontics, Seoul, Korea.,Department of Orthodontics, School of Dentistry, Seoul National University, Seoul, Korea
| | - Y Kim
- Imagoworks Inc., Seoul, Korea
| | - S H Choi
- Department of Orthodontics, The Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Korea
| | - J H Lee
- Department of Orthodontics, The Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Korea.,Department of Orthodontics, Gangnam Severance Hospital Yonsei University, Seoul, Korea
| | - K H Kim
- Department of Orthodontics, The Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Korea.,Department of Orthodontics, Gangnam Severance Hospital Yonsei University, Seoul, Korea
| | - C J Chung
- Department of Orthodontics, The Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Korea.,Department of Orthodontics, Gangnam Severance Hospital Yonsei University, Seoul, Korea
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Seo YW, Park JY, Lee DN, Jin X, Cha JK, Paik JW, Choi SH. Three-dimensionally printed biphasic calcium phosphate blocks with different pore diameters for regeneration in rabbit calvarial defects. Biomater Res 2022; 26:25. [PMID: 35706067 PMCID: PMC9199220 DOI: 10.1186/s40824-022-00271-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [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: 03/10/2022] [Accepted: 05/26/2022] [Indexed: 11/10/2022] Open
Abstract
Background Biphasic calcium phosphate (BCP) is the most frequently used synthetic bone substitutes, which comprises a combination of hydroxyapatite (HA) and beta-tricalcium phosphate (b-TCP). Thanks to the recent advances in digital dentistry and three-dimensional (3D) printing technology, synthetic block bone substitutes can be customized to fit individual defect morphologies. The diameter of the pores can influence the rate of bone formation and material resorption. The aim of this study was to compare three-dimensionally printed biphasic calcium phosphate (BCP) block bone substitutes with different pore diameters (0.8-, 1.0-, and 1.2- mm) for use in the regeneration of rabbit calvarial defects. Methods Four circular defects were formed on the calvaria of ten rabbits. Each defect was randomly allocated to one of the following study groups: (i) control group, (ii) 0.8-mm group, (iii) 1.0-mm group, and (iv) 1.2-mm group. All specimens were postoperatively harvested at 2 and 8 weeks, and radiographic and histomorphometric analyses were performed on the samples. Results Histologically, the BCP blocks remained unresorbed up to 8 weeks, and new bone formation occurred within the porous structures of the blocks. After the short healing period of 2 weeks, histomorphometric analysis indicated that new bone formation was significantly greater in the BCP groups compared with the control (p < 0.05). However, there were no significant differences between the groups with different pore diameters (p > 0.05). At 8 weeks, only the 1.0-mm group (3.42 ± 0.48 mm2, mean ± standard deviation) presented a significantly larger area of new bone compared with the control (2.26 ± 0.59 mm2) (p < 0.05). Among the BCP groups, the 1.0- and 1.2-mm groups exhibited significantly larger areas of new bone compared with the 0.8-mm group (3.42 ± 0.48 and 3.04 ± 0.66 vs 1.60 ± 0.70 mm2, respectively). Conclusions Within the limitations of this study, the BCP block bone substitutes can be applied to bone defects for successful bone regeneration. Future studies should investigate more-challenging defect configurations prior to considering clinical applications.
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Affiliation(s)
- Young-Wook Seo
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, South Korea
| | - Jin-Young Park
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, South Korea
| | - Da-Na Lee
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, South Korea
| | - Xiang Jin
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, South Korea
| | - Jae-Kook Cha
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, South Korea
| | - Jeong-Won Paik
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, South Korea
| | - Seong-Ho Choi
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, South Korea.
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Lim MS, Min BE, Choi SH. First Report of Saguaro Cactus Virus Infecting Gymnocalycium mihanovichii in South Korea. Plant Dis 2022; 106:1310. [PMID: 34661451 DOI: 10.1094/pdis-04-21-0770-pdn] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Affiliation(s)
- M S Lim
- Department of Horticulture, Biotechnology and Landscape Architecture, Seoul Women's University, Seoul 01797, Republic of Korea
| | - B E Min
- Jungbu Regional Office, Animal and Plant Quarantine Agency, 129, Juan-ro, Nam-gu, Incheon, Republic of Korea
| | - S H Choi
- Department of Horticulture, Biotechnology and Landscape Architecture, Seoul Women's University, Seoul 01797, Republic of Korea
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Chung HM, Park JY, Ko KA, Kim CS, Choi SH, Lee JS. Periodontal probing on digital images compared to clinical measurements in periodontitis patients. Sci Rep 2022; 12:1616. [PMID: 35102150 PMCID: PMC8803931 DOI: 10.1038/s41598-021-04695-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 12/17/2021] [Indexed: 11/18/2022] Open
Abstract
The aim of the study was to compare the supra-alveolar gingival dimension (GD) and the clinical pocket probing depth (PD) by combining data from an intraoral scanner (IOS) and cone-beam computed tomography (CBCT) and identify the clinical features affecting the clinical PD. 1,071 sites from 11 patients were selected for whom CBCT, IOS images, and periodontal charts were recorded at the same visit. CBCT and IOS data were superimposed. GD was measured on cross-sectional images of the probed sites. The level of agreement and correlation between GD and PD were assessed for the entire population and within groups (treated vs untreated, bleeding on probing [BOP] vs no BOP, and PDs of 0–3 mm vs 4–5 mm vs ≥ 6 mm). The mean [± SD] difference between GD and PD was 0.82 [± 0.69] mm, and they were positively correlated (r = 0.790, p < 0.001). The correlations between GD and PD were stronger for untreated sites, sites with BOP, and sites with a larger PD. Within the limitations of this study, the similarity between GD and PD may suggest a possible tendency of overestimation when recording PD.
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Kim MC, Park JH, Choi SH, Chung JW. Rhinovirus Incidence Rates Indicate We Are Tired of Non-pharmacological Interventions Against Coronavirus Disease 2019. J Korean Med Sci 2022; 37:e15. [PMID: 35014227 PMCID: PMC8748668 DOI: 10.3346/jkms.2022.37.e15] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 12/14/2021] [Indexed: 01/31/2023] Open
Abstract
BACKGROUND During the coronavirus disease 2019 (COVID-19) pandemic, the incidence of rhinovirus (RV) is inversely related to the intensity of non-pharmacological interventions (NPIs), such as universal mask wearing and physical distancing. METHODS Using RV surveillance data, changes in the effect of NPIs were investigated in South Korea during the pandemic. The time to the first visible effect of NPIs after the onset of NPIs (T1), time to the maximum effect (T2), and duration of the maximum effect (T3) were measured for each surge. For each week, the RVdiff [(RV incidence during the pandemic) - (RV incidence within 5 years before the pandemic)] was calculated, and number of weeks for RVdiff to be below zero after NPIs (time to RVdiff ≤ 0) and number of weeks RVdiff remains below zero after NPIs (duration of RVdiff ≤ 0) were measured for each surge. RESULTS During the study period, four surges of COVID-19 were reported. As the pandemic progressed, T1 and T2 increased, but T3 decreased. Additionally, the "time to RVdiff of ≤ 0" increased and "duration of RVdiff of ≤ 0" decreased. These changes became more pronounced during the third surge (mid-November 2020), before the introduction of the COVID-19 vaccine, and from the emergence of the delta variant. CONCLUSION The effect of NPIs appears slower, the duration of the effect becomes shorter, and the intensity also decreases less than a year after the onset of the pandemic owing to people's exhaustion in implementing NPIs. These findings suggest that the COVID-19 response strategy must be completely overhauled.
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Affiliation(s)
- Min-Chul Kim
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Joung Ha Park
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
- Department of Internal Medicine, Chung-Ang Medical Health Care System Hyundae Hospital, Namyangju, Korea
| | - Seong-Ho Choi
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea.
| | - Jin-Won Chung
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
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Park YS, Lee BA, Choi SH, Kim YT. Evaluation of failed implants and reimplantation at sites of previous dental implant failure: survival rates and risk factors. J Periodontal Implant Sci 2022; 52:230-241. [PMID: 35775698 PMCID: PMC9253280 DOI: 10.5051/jpis.2105020251] [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: 09/23/2021] [Revised: 11/11/2021] [Accepted: 11/16/2021] [Indexed: 11/13/2022] Open
Abstract
Purpose The purpose of this study was to evaluate failed implants and reimplantation survival and to identify the relative risk factors for implant re-failure. Methods Ninety-one dental implants were extracted between 2006 and 2020 at the National Health Insurance Service Ilsan Hospital, including 56 implants in the maxilla and 35 implants in the mandible that were removed from 77 patients. Patient information (e.g., age, sex, and systemic diseases) and surgical information (e.g., the date of surgery and location of the implants and bone grafts) were recorded. If an implant prosthesis was used, prosthesis information was also recorded. Results In total, 91 first-time failed dental implants in 77 patients were analyzed. Of them, 69 implants in 61 patients received reimplantation after failure. Sixteen patients (22 implants) refused reimplantation or received reimplantation at a different site. Eight of the 69 reimplants failed again. The 1-year survival rate of the 69 reimplants was 89.4%. Age at reimplantation and smoking significantly increased the risk of reimplantation failure. However, a history of taking anti-thrombotic agents showed a statistically significant negative association with reimplantation failure. Of the failed implants, 66% showed early failure and 34% showed late failure of the initial implantation. All 8 re-failed implants showed early failure. Only 3 of these 8 failed reimplants were re-tried and the second reimplants all survived. Conclusions The total survival rate of implants, which included reimplants and second reimplants was 99.2%, although the survival rate of the initial implantations was 96.3%. Previous failure did not affect the success of the next trial. Reimplantation failure was more strongly affected by patient factors than by implant factors. Therefore, each patient’s specific factors need to be meticulously controlled to achieve successful reimplantation.
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Affiliation(s)
- Yu-Seon Park
- Department of Periodontology, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Bo-Ah Lee
- Department of Periodontology, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Seong-Ho Choi
- Department of Periodontology, Research Institute of Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, Korea
| | - Young-Taek Kim
- Department of Periodontology, National Health Insurance Service Ilsan Hospital, Goyang, Korea
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Lee SB, Lee BA, Choi SH, Kim YT. Long-term outcomes after peri-implantitis treatment and their influencing factors: a retrospective study. J Periodontal Implant Sci 2022; 52:194-205. [PMID: 35775695 PMCID: PMC9253284 DOI: 10.5051/jpis.2103020151] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 08/10/2021] [Accepted: 09/30/2021] [Indexed: 11/17/2022] Open
Abstract
Purpose This study aimed to determine the long-term outcomes after peri-implantitis treatment and the factors affecting these outcomes. Methods This study included 92 implants in 45 patients who had been treated for peri-implantitis. Clinical data on the characteristics of patients and their implants were collected retrospectively. The change in the marginal bone level was calculated by comparing the baseline and the most recently obtained (≥3 years after treatment) radiographs. The primary outcome variable was progression of the disease after the treatment at the implant level, which was defined as further bone loss of >1.0 mm or implant removal. A 2-level binary logistic regression analysis was used to identify the effects of possible factors on the primary outcome. Results The mean age of the patients was 58.7 years (range, 22–79 years). Progression of peri-implantitis was observed in 64.4% of patients and 63.0% of implants during an observation period of 6.4±2.7 years (mean±standard deviation). Multivariable regression analysis revealed that full compliance to recall visits (P=0.019), smoking (P=0.023), placement of 4 or more implants (P=0.022), and marginal bone loss ≥4 mm at baseline (P=0.027) significantly influenced the treatment outcome. Conclusions The long-term results of peri-implantitis treatment can be improved by full compliance on the part of patients, whereas it is impaired by smoking, placement of multiple implants, and severe bone loss at baseline. Encouraging patients to stop smoking and to receive supportive care is recommended before treatment.
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Affiliation(s)
- Sung-Bae Lee
- Department of Periodontology, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Bo-Ah Lee
- Department of Periodontology, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Seong-Ho Choi
- Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea
| | - Young-Taek Kim
- Department of Periodontology, National Health Insurance Service Ilsan Hospital, Goyang, Korea
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Park KY, Kim MH, Choi SH, Pang EK. Association of periodontitis with menopause and hormone replacement therapy: a hospital cohort study using a common data model. J Periodontal Implant Sci 2022:52.e41. [DOI: 10.5051/jpis.2202480124] [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: 05/15/2022] [Revised: 09/27/2022] [Accepted: 10/12/2022] [Indexed: 11/24/2022] Open
Affiliation(s)
- Ki-Yeol Park
- Department of Periodontology, Ewha Womans University Mokdong Hospital, Seoul, Korea
| | - Min-Ho Kim
- Informatization Department, Ewha Womans University Seoul Hospital, Seoul, Korea
| | - Seong-Ho Choi
- Department of Periodontology, College of Dentistry, Yonsei University, Seoul, Korea
| | - Eun-Kyoung Pang
- Department of Periodontology, Ewha Womans University Mokdong Hospital, Seoul, Korea
- Department of Periodontology, College of Medicine, Ewha Womans University, Seoul, Korea
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Lee YM, Kim T, Park KH, Choi SH, Kwak YG, Choo EJ, Chung JW, Lee MS. Dual respiratory virus detection in adult patients with acute respiratory illness. BMC Infect Dis 2021; 21:997. [PMID: 34556046 PMCID: PMC8460188 DOI: 10.1186/s12879-021-06699-z] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 09/15/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Nonrandom multiple respiratory virus (RV) detection provides evidence for viral interference among respiratory viruses. However, little is known as to whether it occurs randomly. METHODS The prevalence of dual RV detection (DRVD) in patients with acute respiratory illnesses (ARIs) at 4 academic medical centers was investigated; data about the prevalence of 8 RVs were collected from the Korean national RV surveillance dataset. Linear regression analysis was performed to assess the correlation between observed and estimated prevalence of each type of DRVD. RESULTS In total, 108 patients with ARIs showing DRVD were included in this study between 2011 and 2017. In several types of regression analysis, a strong correlation was observed between the observed and estimated prevalence of each type of DRVD. Excluding three DRVD types (influenza/picornavirus, influenza/human metapneumovirus, and adenovirus/respiratory syncytial virus), the slope of the regression line was higher than that of the line of random occurrence (1.231 > 1.000) and the 95% confidence interval of the regression line was located above the line of random occurrence. CONCLUSIONS Contrary to the results of previous epidemiologic studies, most types of DRVD occur more frequently than expected from the prevalence rates of individual RV, except for three underrepresented pairs above.
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Affiliation(s)
- Yu-Mi Lee
- Division of Infectious Diseases, Department of Internal Medicine, Kyung Hee University Hospital, Kyung Hee University School of Medicine, Seoul, Republic of Korea
| | - Tark Kim
- Division of Infectious Diseases, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Republic of Korea
| | - Ki-Ho Park
- Division of Infectious Diseases, Department of Internal Medicine, Kyung Hee University Hospital, Kyung Hee University School of Medicine, Seoul, Republic of Korea
| | - Seong-Ho Choi
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, Republic of Korea.
| | - Yee Gyung Kwak
- Division of Infectious Diseases, Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, Republic of Korea
| | - Eun Ju Choo
- Division of Infectious Diseases, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Republic of Korea
| | - Jin-Won Chung
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, 102 Heukseok-ro, Dongjak-gu, Seoul, 06973, Republic of Korea
| | - Mi Suk Lee
- Division of Infectious Diseases, Department of Internal Medicine, Kyung Hee University Hospital, Kyung Hee University School of Medicine, Seoul, Republic of Korea
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38
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Zhang J, Li Q, Yan Y, Sun B, Wang Y, Tang L, Wang E, Yu J, Nogoy KMC, Li X, Choi SH. Effect of ciglitazone on adipogenic transdifferentiation of bovine skeletal muscle satellite cells. J Anim Sci Technol 2021; 63:934-953. [PMID: 34447968 PMCID: PMC8367394 DOI: 10.5187/jast.2021.e87] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/22/2021] [Accepted: 06/30/2021] [Indexed: 12/15/2022]
Abstract
Ciglitazone is a member of the thiazolidinedione family, and specifically binds
to peroxisome proliferator-activated receptor-γ
(PPARγ), thereby promoting adipocyte
differentiation. We hypothesized that ciglitazone as a
PPARγ ligand in the absence of an adipocyte
differentiation cocktail would increase adiponectin and adipogenic gene
expression in bovine satellite cells (BSC). Muscle-derived BSCs were isolated
from six, 18-month-old Yanbian Yellow Cattle. The BSC were cultured for 96 h in
differentiation medium containing 5 µM ciglitazone (CL), 10 µM
ciglitazone (CM), or 20 µM ciglitazone (CH). Control (CON) BSC were
cultured only in a differentiation medium (containing 2% horse serum). The
presence of myogenin, desmin, and paired box7 (Pax7) proteins was confirmed in the BSC by
immunofluorescence staining. The CL, CM, and CH treatments produced higher
concentrations of triacylglycerol and lipid droplet accumulation in myotubes
than those of the CON treatment. Ciglitazone treatments significantly increased
the relative expression of PPARγ,
CCAAT/enhancer-binding protein alpha
(C/EBPα), C/EBPβ,
fatty acid synthase, stearoyl-CoA
desaturase, and perilipin 2. Ciglitazone
treatments increased gene expression of Pax3 and
Pax7 and decreased expression of myogenic
differentiation-1, myogenin, myogenic regulatory factor-5, and
myogenin-4 (p < 0.01). Adiponectin
concentration caused by ciglitazone treatments was significantly greater than
CON (p < 0.01). RNA sequencing showed that 281
differentially expressed genes (DEGs) were found in the treatments of
ciglitazone. DEGs gene ontology (GO) analysis showed that the top 10 GO
enrichment significantly changed the biological processes such as protein
trimerization, negative regulation of cell proliferation, adipocytes
differentiation, and cellular response to external stimulus. Kyoto Encyclopedia
of Genes and Genomes pathway analysis showed that DEGs were involved in the p53
signaling pathway, PPAR signaling pathway, biosynthesis of
amino acids, tumor necrosis factor signaling pathway, non-alcoholic fatty liver
disease, PI3K-Akt signaling pathway, and Wnt signaling pathway. These results
indicate that ciglitazone acts as PPARγ agonist,
effectively increases the adiponectin concentration and adipogenic gene
expression, and stimulates the conversion of BSC to adipocyte-like cells in the
absence of adipocyte differentiation cocktail.
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Affiliation(s)
- Junfang Zhang
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji 133002, China.,Department of Animal Science, Yanbian University, Yanji 133002, China
| | - Qiang Li
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji 133002, China.,Department of Animal Science, Yanbian University, Yanji 133002, China
| | - Yan Yan
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji 133002, China.,Department of Animal Science, Yanbian University, Yanji 133002, China
| | - Bin Sun
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji 133002, China.,Department of Animal Science, Yanbian University, Yanji 133002, China
| | - Ying Wang
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji 133002, China.,Department of Animal Science, Yanbian University, Yanji 133002, China
| | - Lin Tang
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji 133002, China.,Department of Animal Science, Yanbian University, Yanji 133002, China
| | - Enze Wang
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji 133002, China.,Department of Animal Science, Yanbian University, Yanji 133002, China
| | - Jia Yu
- Department of Animal Science, Chungbuk National University, Cheongju 28644, Korea
| | | | - Xiangzi Li
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji 133002, China.,Department of Animal Science, Yanbian University, Yanji 133002, China
| | - Seong-Ho Choi
- Department of Animal Science, Chungbuk National University, Cheongju 28644, Korea
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Zhang J, Li Q, Nogoy KMC, Sun J, Sun B, Wang Y, Tang L, Yu J, Jin X, Li X, Choi SH. Effect of palmitoleic acid on the differentiation of bovine skeletal muscle satellite cells. J Anim Sci Technol 2021; 63:919-933. [PMID: 34447967 PMCID: PMC8367402 DOI: 10.5187/jast.2021.e78] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 05/11/2021] [Accepted: 05/20/2021] [Indexed: 11/20/2022]
Abstract
We hypothesized that the unsaturated fatty acid palmitoleic acid (POA) could promote the expression of adipogenic/lipogenic genes in bovine skeletal muscle satellite cells (BSCs). The BSCs were cultured in a growth medium containing 10% fetal bovine serum. When the cells reached 80%-90% confluence, we used the differentiation medium with 5% horse serum for differentiation for 96 h. The differentiation medium contained 50 µM, 100 µM and 200 µM POA. Control BSC were cultured only in differentiation media. Compared with the control BSC, the POA BSC significantly up-regulated the expression of paired box 3 (Pax3) and paired box 7 (Pax7) and down-regulated myogenin gene expression (p < 0.01), which indicates a depression in muscle fiber development. However, all POA treatments up-regulated the expression of the adipocyte transcription factors peroxisome proliferator-activated receptor γ (PPARγ), CCAAT/enhancer-binding protein alpha and beta (C/EBP α and C/EBP β), and other genes (p < 0.01) and increased the expression of PAT-family proteins and the concentration of adiponectin in the media. These results indicate that POA can convert part of BSCs into adipocytes.
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Affiliation(s)
- Junfang Zhang
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji 133002, China.,Department of Animal Science, Yanbian University, Yanji 133002, China
| | - Qiang Li
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji 133002, China.,Department of Animal Science, Yanbian University, Yanji 133002, China
| | | | - Jianfu Sun
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji 133002, China.,Department of Animal Science, Yanbian University, Yanji 133002, China
| | - Bin Sun
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji 133002, China.,Department of Animal Science, Yanbian University, Yanji 133002, China
| | - Ying Wang
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji 133002, China.,Department of Animal Science, Yanbian University, Yanji 133002, China
| | - Lin Tang
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji 133002, China.,Department of Animal Science, Yanbian University, Yanji 133002, China
| | - Jia Yu
- Department of Animal Science, Chungbuk National University, Cheongju 28644, Korea
| | - Xin Jin
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji 133002, China.,Department of Animal Science, Yanbian University, Yanji 133002, China
| | - Xiangzi Li
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji 133002, China.,Department of Animal Science, Yanbian University, Yanji 133002, China
| | - Seong-Ho Choi
- Department of Animal Science, Chungbuk National University, Cheongju 28644, Korea
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40
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Yu SH, Lee JH, Kim MC, Choi SH, Chung JW, Lee MK. Ten-Year Prevalence Trends of Phenotypically Identified Community-Associated Methicillin-Resistant Staphylococcus aureus Strains in Clinical Specimens. Ann Lab Med 2021; 41:386-393. [PMID: 33536357 PMCID: PMC7884191 DOI: 10.3343/alm.2021.41.4.386] [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] [Indexed: 11/19/2022] Open
Abstract
Background Community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) strains were first detected in hospitals in Korea between the late 2000s and early 2010s. However, there is limited information regarding the prevalence of CA-MRSA strains among hospital isolates and their phenotypic changes over the last decade. We investigated the prevalence trend of CA-MRSA strains isolated from different clinical specimens and their phenotypic changes between September 2009 and September 2019. Methods CA-MRSA strains were phenotypically identified by confirming their resistance to penicillin (PCN) and oxacillin (OXA) and evaluating their susceptibility to trimethoprim-sulfamethoxazole, rifampin, fusidic acid, tetracycline, and at least one of the following four antimicrobials: clindamycin (CLI), erythromycin (ERY), ciprofloxacin (CIP), and gentamicin (GEN). A CA-MRSA strain that exhibited resistance to ERY, CLI, CIP, or GEN was classified as having resistance pattern I, II, III, or IV, respectively, regardless of its resistance to other antimicrobial agents. Results Of the 8,278 MRSA isolates identified in specimens obtained two days after admission, 1,385 (16.73%) were CA-MRSA strains. The prevalence of CA-MRSA strains increased from 12.2% to 26.6% (3.21% per period, P=0.05). Resistance type analysis revealed an increasing trend in the prevalence of PCN/OXA-resistant (1.84%; P=0.049) and PCN/OXA/ERY/CLI/CIP-resistant (0.98%; P=0.04) CA-MRSA strains and in resistance pattern III strains (2.08%; P=0.004). Conclusions The prevalence of CA-MRSA strains in Korea has increased significantly over the last decade, and CA-MRSA strains have gained phenotypic diversity beyond PCN/OXA-resistance, including antimicrobial resistance to non-β-lactams, especially CIP.
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Affiliation(s)
- So Hyun Yu
- Chung-Ang University College of Medicine, Seoul, Korea
| | | | - Min-Chul Kim
- Chung-Ang University College of Medicine, Seoul, Korea.,Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Seoul, Korea
| | - Seong-Ho Choi
- Chung-Ang University College of Medicine, Seoul, Korea.,Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Seoul, Korea
| | - Jin-Won Chung
- Chung-Ang University College of Medicine, Seoul, Korea.,Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Seoul, Korea
| | - Mi-Kyung Lee
- Chung-Ang University College of Medicine, Seoul, Korea.,Department of Laboratory Medicine, Chung-Ang University Hospital, Seoul, Korea
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41
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Zhang Y, Choi SH, Nogoy KM, Liang S. Review: The development of the gastrointestinal tract microbiota and intervention in neonatal ruminants. Animal 2021; 15:100316. [PMID: 34293582 DOI: 10.1016/j.animal.2021.100316] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [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: 02/03/2021] [Revised: 06/14/2021] [Accepted: 06/15/2021] [Indexed: 12/23/2022] Open
Abstract
The complex microbiome colonizing the gastrointestinal tract (GIT) of ruminants plays an important role in the development of the immune system, nutrient absorption and metabolism. Hence, understanding GIT microbiota colonization in neonatal ruminants has positive impacts on host health and productivity. Microbes rapidly colonize the GIT after birth and gradually develop into a complex microbial community, which allows the possibility of GIT microbiome manipulation to enhance newborn health and growth and perhaps induce lasting effects in adult ruminants. This paper reviews recent advances in understanding how host-microbiome interactions affect the GIT development and health of neonatal ruminants. Following initial GIT microbiome colonization, continuous exposure to host-specific microorganisms is necessary for GIT development and immune system maturation. Furthermore, the early GIT microbial community structure is significantly affected by early life events, such as maternal microbiota exposure, dietary changes, age and the addition of prebiotics, probiotics and synbiotics, supporting the idea of microbial programming in early life. However, the time window in which interventions can optimally improve production and reduce gastrointestinal disease as well as the role of key host-specific microbiota constituents and host immune regulation requires further study.
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Affiliation(s)
- Y Zhang
- Department of Animal Science, College of Animal Sciences, Jilin University, Changchun 130062, China; Department of Animal Science, Chungbuk National University, Cheongju 28644, South Korea
| | - S H Choi
- Department of Animal Science, Chungbuk National University, Cheongju 28644, South Korea
| | - K M Nogoy
- Department of Animal Science, Chungbuk National University, Cheongju 28644, South Korea
| | - S Liang
- Department of Animal Science, College of Animal Sciences, Jilin University, Changchun 130062, China.
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42
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Kim WY, Kweon OJ, Cha MJ, Baek MS, Choi SH. Dexamethasone may improve severe COVID-19 via ameliorating endothelial injury and inflammation: A preliminary pilot study. PLoS One 2021; 16:e0254167. [PMID: 34214123 PMCID: PMC8253399 DOI: 10.1371/journal.pone.0254167] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 06/21/2021] [Indexed: 12/15/2022] Open
Abstract
Dexamethasone provides benefits in patients with coronavirus disease 2019 (COVID-19), although data regarding immunological profiles and viral clearance are limited. This study aimed to evaluate for differences in biomarkers among patients with severe COVID-19 who did and did not receive dexamethasone. We measured plasma biomarkers of lung epithelial/endothelial injury and inflammation in 31 patients with severe COVID-19 and in 13 controls. Changes in biomarkers and clinical parameters were compared during the 7-day period among COVID-19 patients, and also according to dexamethasone use. Thirty-two patients with severe COVID-19 who received mechanical ventilation (n = 6), high-flow nasal cannula (n = 11), and supplemental oxygen (n = 15) were analyzed. Relative to controls, patients with severe COVID-19 had significantly higher concentrations of biomarkers related to glycocalyx shedding (endocan and syndecan-1), endothelial injury (von Willebrand factor), and inflammation (soluble receptor for advanced glycation end-products [sRAGE] and interleukin-6). The 7-day decreases in biomarkers of endothelial injury (angiopoietin-2 [Ang-2] and intercellular adhesion molecule-1 [ICAM-1]) and sRAGE, but not in the biomarker of lung epithelial injury (surfactant protein D), were correlated with decreases in C-reactive protein and radiologic score at day 7. Twenty patients (63%) received dexamethasone, and the dexamethasone and non-dexamethasone groups differed in terms of disease severity. However, dexamethasone was associated marginally with increased SpO2/FiO2 and significantly with decreases in C-reactive protein and radiologic score after adjusting for baseline imbalances. Furthermore, the dexamethasone group exhibited a significant decrease in the concentrations of Ang-2, ICAM-1, soluble form of the Tie2 receptor (a biomarker of glycocalyx shedding), and sRAGE. Both groups exhibited a clinically insignificant increase in the cycle threshold value. Severe COVID-19 may be characterized by more severe endothelial injury and inflammation, and less severe lung epithelial injury. There is a possibility that dexamethasone improved severe COVID-19 and related endothelial injury without delaying viral clearance.
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Affiliation(s)
- Won-Young Kim
- Division of Critical Care Medicine, Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Oh Joo Kweon
- Department of Laboratory Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Min Jae Cha
- Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Moon Seong Baek
- Division of Critical Care Medicine, Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Seong-Ho Choi
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Republic of Korea
- * E-mail:
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43
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Choi SH, Dagher M, Ruffin F, Park LP, Sharma-Kuinkel BK, Souli M, Morse AM, Eichenberger EM, Hale L, Kohler C, Warren B, Hansen B, Medie FM, McIntyre LM, Fowler VG. Risk Factors for Recurrent Staphylococcus aureus Bacteremia. Clin Infect Dis 2021; 72:1891-1899. [PMID: 32564065 DOI: 10.1093/cid/ciaa801] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 09/01/2019] [Accepted: 06/12/2020] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND To understand the clinical, bacterial, and host characteristics associated with recurrent Staphylococcus aureus bacteremia (R-SAB), patients with R-SAB were compared to contemporaneous patients with a single episode of SAB (S-SAB). METHODS All SAB isolates underwent spa genotyping. All isolates from R-SAB patients underwent pulsed-field gel electrophoresis (PFGE). PFGE-indistinguishable pairs from 40 patients underwent whole genome sequencing (WGS). Acute phase plasma from R-SAB and S-SAB patients was matched 1:1 for age, race, sex, and bacterial genotype, and underwent cytokine quantification using 25-analyte multiplex bead array. RESULTS R-SAB occurred in 69 (9.1%) of the 756 study patients. Of the 69 patients, 30 experienced relapse (43.5%) and 39 reinfection (56.5%). Age, race, hemodialysis dependence, presence of foreign body, methicillin-resistant Staphyloccus aureus, and persistent bacteremia were individually associated with likelihood of recurrence. Multivariate risk modeling revealed that black hemodialysis patients were nearly 2 times more likely (odds ratio [OR] = 9.652 [95% confidence interval [CI], 5.402-17.418]) than white hemodialysis patients (OR = 4.53 [95% CI, 1.696-10.879]) to experience R-SAB. WGS confirmed PFGE interpretations in all cases. Median RANTES (regulated on activation, normal T cell expressed and secreted) levels in acute phase plasma from the initial episode of SAB were higher in R-SAB than in matched S-SAB controls (P = .0053, false discovery rate < 0.10). CONCLUSION This study identified several risk factors for R-SAB. The largest risk for R-SAB is among black hemodialysis patients. Higher RANTES levels in R-SAB compared to matched controls warrants further study.
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Affiliation(s)
- Seong-Ho Choi
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA.,Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Michael Dagher
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA
| | - Felicia Ruffin
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA
| | - Lawrence P Park
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA.,Duke Global Health Institute, Duke University, Durham, North Carolina, USA
| | | | - Maria Souli
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA.,Duke Clinical Research Institute, Durham, North Carolina, USA
| | - Alison M Morse
- Departments of Molecular Genetics and Microbiology, University of Florida, Gainesville, Florida, USA.,University of Florida Genetics Institute University of Florida, Gainesville Florida, USA
| | - Emily M Eichenberger
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA
| | - Lauren Hale
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA
| | - Celia Kohler
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA
| | - Bobby Warren
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA
| | - Brenda Hansen
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA.,Pediatric Gastroenterology, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Felix Mba Medie
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA
| | - Lauren M McIntyre
- Departments of Molecular Genetics and Microbiology, University of Florida, Gainesville, Florida, USA.,University of Florida Genetics Institute University of Florida, Gainesville Florida, USA
| | - Vance G Fowler
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, USA.,Duke Clinical Research Institute, Durham, North Carolina, USA
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44
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Park JY, Choi SH, Chung JW, Hwang MH, Kim MC. Systemic Adverse Events and Use of Antipyretics Predict the Neutralizing Antibody Positivity Early after the First Dose of ChAdOx1 Coronavirus Disease Vaccine. J Clin Med 2021; 10:jcm10132844. [PMID: 34199053 PMCID: PMC8268750 DOI: 10.3390/jcm10132844] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 06/19/2021] [Accepted: 06/24/2021] [Indexed: 01/31/2023] Open
Abstract
Vaccination is considered crucial for the eradication of the coronavirus disease (COVID-19). In our medical center in Korea, most health care workers (HCWs) were vaccinated with the ChAdOx1 COVID-19 vaccine. After vaccination, many HCWs complained of adverse events (AEs). However, it remains unclear whether the production of neutralizing antibodies (NAb) was affected. Therefore, here, we aimed to evaluate AEs and early NAb production in relatively healthy Asians who received the ChAdOx1 vaccine and determine the effect of AEs and antipyretics on early NAb production against COVID-19. Of the 182 Korean HCWs who received the first dose of ChAdOx1 vaccine, 172 (94.5%) experienced ≥1 adverse events and 148 (81.3%) tested positive for NAb 33–40 days after the vaccination. NAb-positive vaccine recipients reported systemic AEs and consumed acetaminophen more frequently than NAb-negative recipients. We identified an association between antibody response and COVID-19 vaccine-related AEs. In conclusion, most ChAdOx1 vaccine recipients reported AEs in our medical center.
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Affiliation(s)
- Ji Young Park
- Department of Pediatrics, Chung-Ang University Hospital, Seoul 06973, Korea;
| | - Seong-Ho Choi
- Department of Internal Medicine, Division of Infectious Diseases, Chung-Ang University Hospital, Seoul 06973, Korea; (S.-H.C.); (M.-H.H.); (M.-C.K.)
| | - Jin-Won Chung
- Department of Internal Medicine, Division of Infectious Diseases, Chung-Ang University Hospital, Seoul 06973, Korea; (S.-H.C.); (M.-H.H.); (M.-C.K.)
- Correspondence: ; Tel.: +82-2-6299-1420
| | - Min-Hyung Hwang
- Department of Internal Medicine, Division of Infectious Diseases, Chung-Ang University Hospital, Seoul 06973, Korea; (S.-H.C.); (M.-H.H.); (M.-C.K.)
| | - Min-Chul Kim
- Department of Internal Medicine, Division of Infectious Diseases, Chung-Ang University Hospital, Seoul 06973, Korea; (S.-H.C.); (M.-H.H.); (M.-C.K.)
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45
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Sun X, Piao L, Jin H, Nogoy KMC, Zhang J, Sun B, Jin Y, Lee DH, Choi SH, Smith SB, Li X. Effects of dietary glucose oxidase, catalase, or both supplementation on reproductive performance, oxidative stress, fecal microflora and apoptosis in multiparous sows. Anim Biosci 2021; 35:75-86. [PMID: 34237918 PMCID: PMC8738931 DOI: 10.5713/ab.20.0839] [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] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 05/24/2021] [Indexed: 11/27/2022] Open
Abstract
Objective The objective of this experiment was to investigate the effect of dietary glucose oxidase (GOD), catalase (CAT), or both supplementation on reproductive performance, oxidative stress, and apoptosis in sows. Methods A total of 104 multiparous sows were randomly assigned to four groups (n = 26) with each group given a basal diet, basal diet plus GOD at 60 U/kg, basal diet plus CAT at 75 U/kg, and basal diet plus GOD at 60 U/kg and CAT at 75 U/kg. Sows were fed the experimental diets throughout gestation and lactation. Results Dietary GOD supplementation increased average daily feed intake of sows and litter weight at weaning (p<0.05). Dietary CAT supplementation reduced the duration of parturition, stillbirth, and piglet mortality and increased growth performance of weaned piglets (p<0.05). Dietary GOD and CAT supplementation enhanced antioxidant enzyme activities and lessened oxidative stress product levels in plasma of sows and elevated antioxidant capacity of 14-day milk and plasma in weaned piglets (p<0.05). Dietary GOD supplementation increased fecal Lactobacillus counts and reduced Escherichia coli counts of sows (p<0.05). Compared with the basal diet, the GOD diet reduced fecal Escherichia coli counts of sows, but the addition of CAT did not reduce Escherichia coli counts in the GOD diet. Dietary GOD and CAT supplementation reduced the apoptosis rate of the liver, endometrium, and ovarian granulosa cells in sows (p<0.05). In the liver, uterus, and ovary of sows, the mRNA expression of caspase-3 and caspase-9 was downregulated by dietary GOD and CAT supplementation (p<0.05). Conclusion Dietary GOD and CAT supplementation could improve the antioxidant capacity of sows and weaned piglets, and alleviate hepatic, ovarian and uterine apoptosis by weakening apoptosis-related gene expression. Glucose oxidase regulated fecal microflora of sows, but supplementation of CAT to GOD could weaken the inhibitory effect of GOD on fecal Escherichia coli.
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Affiliation(s)
- Xiaojiao Sun
- Department of Animal Science, Yanbian University, Yanji 133002, China
| | - Longguo Piao
- Department of Animal Science, Yanbian University, Yanji 133002, China.,CJ Cheiljedang feed (China) R&D center, Shenyang, Liaoning, 110000, China
| | - Haifeng Jin
- CJ Cheiljedang feed (China) R&D center, Shenyang, Liaoning, 110000, China
| | | | - Junfang Zhang
- Department of Biosystems Engineering, Chungbuk National University, Cheongju 28644, Korea
| | - Bin Sun
- Department of Animal Science, Yanbian University, Yanji 133002, China
| | - Yi Jin
- Department of Animal Science, Yanbian University, Yanji 133002, China
| | - Dong Hoon Lee
- Department of Animal Science, Yanbian University, Yanji 133002, China
| | - Seong-Ho Choi
- Department of Animal Science, Chungbuk National University, Cheongju City 28644, Korea
| | - Stephen B Smith
- Department of Animal Science, Chungbuk National University, Cheongju City 28644, Korea
| | - Xiangzi Li
- Department of Animal Science, Texas A&M University, College Station, TX 77843-2471, USA
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Tien HK, Lee WH, Kim CS, Choi SH, Gruber R, Lee JS. Alveolar ridge regeneration in two-wall-damaged extraction sockets of an in vivo experimental model. Clin Oral Implants Res 2021; 32:971-979. [PMID: 34101908 PMCID: PMC8453892 DOI: 10.1111/clr.13791] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 03/24/2021] [Accepted: 05/22/2021] [Indexed: 12/24/2022]
Abstract
Aim To determine the healing outcome following grafting with deproteinized porcine bone mineral (DPBM) with or without collagen membrane coverage in two‐wall (both buccal and lingual)‐damaged extraction sockets. Materials and methods Distal roots of three mandibular premolars in six beagle dogs were extracted, and the whole buccal and lingual bony walls were surgically removed. Three treatment protocols were then applied according to the following group allocation: no graft (None), grafting DPBM (BG), and grafting DPBM with coverage by a collagen membrane (BG + M). Two observational periods (2 and 8 weeks) were used with the split‐mouth design, and quantitative and qualitative analyses were performed by microcomputed tomography and histology. Results The dimensions of the alveolar ridge at both grafted sites (BG and BG + M) remained similar to those of the pristine ridge in the histologic and radiographic analyses, whereas the ungrafted sites (None) collapsed both vertically and horizontally. Both grafting protocols produced substantial bony regeneration, but the addition of a covering membrane enhanced the proportion of mineralized tissue within the augmented area, and the BG + M group also showed a significantly larger area of regenerated ridge than the None group (p < .05). Conclusions Bone grafting with collagen membrane can maintain the alveolar ridge dimensions with substantial bone regeneration in a two‐wall‐damaged extraction socket.
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Affiliation(s)
- Hsu Kuo Tien
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, South Korea
| | - Won-Ho Lee
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, South Korea
| | - Chang-Sung Kim
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, South Korea
| | - Seong-Ho Choi
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, South Korea.,Innovation Research and Support Center for Dental Science, Yonsei University Dental Hospital, Seoul, Korea
| | - Reinhard Gruber
- Department of Oral Biology, School of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Jung-Seok Lee
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, South Korea.,Innovation Research and Support Center for Dental Science, Yonsei University Dental Hospital, Seoul, Korea.,Department of Oral Biology, School of Dentistry, Medical University of Vienna, Vienna, Austria
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Choi HJ, Choi SH, You SH, Yoo RE, Kang KM, Yun TJ, Kim JH, Sohn CH, Park CK, Park SH. MGMT Promoter Methylation Status in Initial and Recurrent Glioblastoma: Correlation Study with DWI and DSC PWI Features. AJNR Am J Neuroradiol 2021; 42:853-860. [PMID: 33632732 DOI: 10.3174/ajnr.a7004] [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: 07/28/2020] [Accepted: 11/16/2020] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE O6-methylguanine-DNA methyltransferase (MGMT) promoter methylation status in primary and recurrent glioblastoma may change during treatment. The purpose of this study was to correlate MGMT promoter methylation status changes with DWI and DSC PWI features in patients with recurrent glioblastoma after standard treatment. MATERIALS AND METHODS Between January 2008 and November 2016, forty patients with histologically confirmed recurrent glioblastoma were enrolled. Patients were divided into 3 groups according to the MGMT promoter methylation status for the initial and recurrent tumors: 2 groups whose MGMT promoter methylation status remained, group methylated (n = 13) or group unmethylated (n = 18), and 1 group whose MGMT promoter methylation status changed from methylated to unmethylated (n = 9). Normalized ADC and normalized relative CBV values were obtained from both the enhancing and nonenhancing regions, from which histogram parameters were calculated. The ANOVA and the Kruskal-Wallis test followed by post hoc tests were performed to compare histogram parameters among the 3 groups. The t test and Mann-Whitney U test were used to compare parameters between group methylated and group methylated to unmethylated. Receiver operating characteristic curve analysis was used to measure the predictive performance of the normalized relative CBV values between the 2 groups. RESULTS Group methylated to unmethylated showed significantly higher means and 90th and 95th percentiles of the cumulative normalized relative CBV values of the nonenhancing region of the initial tumor than group methylated and group unmethylated (all P < .05). The mean normalized relative CBV value of the nonenhancing region of the initial tumor was the best predictor of methylation status change (P < .001), with a sensitivity of 77.78% and specificity of 92.31% at a cutoff value of 2.594. CONCLUSIONS MGMT promoter methylation status might change in recurrent glioblastoma after standard treatment. The normalized relative CBV values of the nonenhancing region at the first preoperative MR imaging were higher in the MGMT promoter methylation change group from methylation to unmethylation in recurrent glioblastoma.
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Affiliation(s)
- H J Choi
- From the Department of Radiology (H.J.C.), Cha Bundang Medical Center, Cha University, Seongnam, Korea
| | - S H Choi
- Department of Radiology (S.H.C., R.-E.Y., K.M.K., T.J.Y., J.-h.K., C.-H.S.), Seoul National University Hospital, Seoul, Korea
| | - S-H You
- Department of Radiology (S.-H.Y.), Korea University Hospital, Seoul, Korea
| | - R-E Yoo
- Department of Radiology (S.H.C., R.-E.Y., K.M.K., T.J.Y., J.-h.K., C.-H.S.), Seoul National University Hospital, Seoul, Korea
| | - K M Kang
- Department of Radiology (S.H.C., R.-E.Y., K.M.K., T.J.Y., J.-h.K., C.-H.S.), Seoul National University Hospital, Seoul, Korea
| | - T J Yun
- Department of Radiology (S.H.C., R.-E.Y., K.M.K., T.J.Y., J.-h.K., C.-H.S.), Seoul National University Hospital, Seoul, Korea
| | - J-H Kim
- Department of Radiology (S.H.C., R.-E.Y., K.M.K., T.J.Y., J.-h.K., C.-H.S.), Seoul National University Hospital, Seoul, Korea
| | - C-H Sohn
- Department of Radiology (S.H.C., R.-E.Y., K.M.K., T.J.Y., J.-h.K., C.-H.S.), Seoul National University Hospital, Seoul, Korea
| | - C-K Park
- Department of Neurosurgery (C.-K.P.), Seoul National University Hospital, Seoul, Korea
| | - S-H Park
- Department of Pathology (S.-H.P.), Seoul National University Hospital, Seoul, Korea
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Kim JH, Oh JW, Lee Y, Yun JH, Choi SH, Lee DW. Quantification of Bacteria in Mouth-Rinsing Solution for the Diagnosis of Periodontal Disease. J Clin Med 2021; 10:891. [PMID: 33671765 PMCID: PMC7926621 DOI: 10.3390/jcm10040891] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 02/15/2021] [Accepted: 02/18/2021] [Indexed: 11/25/2022] Open
Abstract
This study aimed to evaluate the feasibility of diagnosing periodontitis via the identification of 18 bacterial species in mouth-rinse samples. Patients (n = 110) who underwent dental examinations in the Department of Periodontology at the Veterans Health Service Medical Center between 2018 and 2019 were included. They were divided into healthy and periodontitis groups. The overall number of bacteria, and those of 18 specific bacteria, were determined via real-time polymerase chain reaction in 92 mouth-rinse samples. Differences between groups were evaluated through logistic regression after adjusting for sex, age, and smoking history. There was a significant difference in the prevalence (healthy vs. periodontitis group) of Aggregatibacter actinomycetemcomitans (2.9% vs. 13.5%), Treponema denticola (42.9% vs. 69.2%), and Prevotella nigrescens (80% vs. 2.7%). Levels of Treponema denticola, Prevotella nigrescens, and Streptococcus mitis were significantly associated with severe periodontitis. We demonstrated the feasibility of detecting periopathogenic bacteria in mouth-rinse samples obtained from patients with periodontitis. As we did not comprehensively assess all periopathogenic bacteria, further studies are required to assess the potential of oral-rinsing solutions to indicate oral infection risk and the need to improve oral hygiene, and to serve as a complementary method for periodontal disease diagnosis.
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Affiliation(s)
- Jeong-Hwa Kim
- Department of Periodontology, Dental Hospital, Veterans Health Service Medical Center, Seoul 05368, Korea; (J.-H.K.); (J.-W.O.)
| | - Jae-Woon Oh
- Department of Periodontology, Dental Hospital, Veterans Health Service Medical Center, Seoul 05368, Korea; (J.-H.K.); (J.-W.O.)
| | - Young Lee
- Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul 05368, Korea;
| | - Jeong-Ho Yun
- Department of Periodontology, College of Dentistry and Institute of Oral Bioscience, Jeonbuk National University, Jeonju 54896, Korea;
| | - Seong-Ho Choi
- Department of Periodontology, College of Dentistry and Research Institute for Periodontal Regeneration, Yonsei University, Seoul 03722, Korea;
| | - Dong-Woon Lee
- Department of Periodontology, Dental Hospital, Veterans Health Service Medical Center, Seoul 05368, Korea; (J.-H.K.); (J.-W.O.)
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Affiliation(s)
- Min-Chul Kim
- Chung-Ang University Hospital, Seoul, South Korea
| | - Chunguang Cui
- Korea University College of Medicine, Seoul, South Korea
| | | | - Joon-Yong Bae
- Korea University College of Medicine, Seoul, South Korea
| | - Oh-Joo Kweon
- Chung-Ang University Hospital, Seoul, South Korea
| | - Mi-Kyung Lee
- Chung-Ang University Hospital, Seoul, South Korea
| | | | - Sun-Young Jung
- College of Pharmacy, Chung-Ang University, Seoul, South Korea
| | - Man-Seong Park
- Korea University College of Medicine, Seoul, South Korea
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Kang E, Suh SW, Lee SE, Choi YS, Choi SH, Lee BR, Choi Y, Jeong J. Differences in Bile Microbiology and Antibiotic Resistances between Liver Transplant Recipients and Non-Transplant Patients. Surg Infect (Larchmt) 2021; 22:741-751. [PMID: 33533687 DOI: 10.1089/sur.2020.358] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
Abstract
Background: Treatment of biliary infection in liver transplant (LT) recipients is a challenge, especially because of ineffectiveness of the antibiotic agents otherwise recommended for non-transplant populations. We aimed to understand the factors underlying the choice of antibiotic therapy. Patients and Methods: A total of 373 bile cultures from LT recipients with biliary complications (n = 127; LT group) and from a non-transplant population that underwent cholecystectomy for acute cholecystitis (n = 246; non-transplant group) between January 2009 and December 2018, were investigated. Results: Polymicrobial cultures (13.4% vs. 1.6%; p < 0.001), Enterococcus faecium (26.0% vs. 8.5%; p < 0.001), and Pseudomonas (13.4% vs. 4.1%; p = 0.001) in the LT group, and non-faecium enterococci (3.9% vs. 18.3%; p < 0.001) and Enterobacteriales (40.2% vs. 54.9%; p = 0.007), especially Escherichia (11.0% vs. 29.7%; p < 0.001), in the non-transplant group, showed higher abundance. Most of the antibiotic agents recommended as initial antibiotic therapy for the non-transplant population as per previous guidelines were not effective in LT recipients. The incidences of Enterococcus faecium (14.9% vs. 32.5%; p = 0.029) in the LT recipients with model for end-stage liver disease (MELD) score >12 and non-faecium enterococci (8.5% vs. 1.3%; p = 0.042) in those with MELD score ≤12 were higher than those in the other group. The incidence of Enterobacteriales increased over time after LT (p = 0.048) and was similar to that in the non-transplant group after one year of LT. Bile micro-organisms in LT recipients, resistant to most antibiotic agents, especially soon after LT changed over time and became similar to those in the non-transplant group after one year of LT. Conclusions: Antibiotic therapy for biliary infection in LT recipients should be different from that in non-transplant populations, considering clinical factors such as the time interval after LT and MELD score.
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Affiliation(s)
- Eunhye Kang
- Department of Surgery, College of Medicine, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Suk-Won Suh
- Department of Surgery, College of Medicine, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Seung Eun Lee
- Department of Surgery, College of Medicine, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Yoo Shin Choi
- Department of Surgery, College of Medicine, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Seong-Ho Choi
- Division of Infectious Diseases, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Bo-Ram Lee
- Department of Surgery, College of Medicine, Seoul National University Bundang Hospital, Seoul, Korea
| | - YoungRok Choi
- Department of Surgery, College of Medicine, Seoul National University, Seoul, Korea
| | - Jaehong Jeong
- Department of Surgery, College of Medicine, Soonchunhyang University, Seoul, Korea
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