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Pyo JH, Lee SY, Lee IJ, Kim SM, Kim JW. Beneficial Role of Multi-Disciplinary Treatment for Anaplastic Thyroid Cancer with Initial Distant Metastasis. Int J Radiat Oncol Biol Phys 2023; 117:e616-e617. [PMID: 37785850 DOI: 10.1016/j.ijrobp.2023.06.1996] [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) Anaplastic thyroid cancer (ATC) is a rare, highly aggressive tumor, with median survival around 5 months. Approximately half of the ATC patients presents with distant metastases at diagnosis, showing even more devastating prognosis, yet no outcome analysis had been reported. In this study, we aim to evaluate the clinical outcome of M1 ATC patients, and to define the group of patients who would benefit from local treatment based on multi-disciplinary approach. MATERIALS/METHODS A total of 133 histology-confirmed ATC patients underwent protocol-based multidisciplinary treatment including surgery and chemoradiotherapy (CRT) between May 2016 and January 2022. Patients received intensity-modulated radiotherapy of 30 fractions concurrently with paclitaxel on days 1, 8 and 15 every 4 weeks, and lenvatinib was added upon progression. After 18 fractions of CRT, interim response analysis using modified RECIST was conducted for adaptive treatment planning. We reviewed 58 patients with distant metastasis at diagnosis (stage IVC). Overall survival (OS) and progression-free survival (PFS) were measured from the day of diagnosis. RESULTS Most common metastatic site was lung (91.4%), followed by bone (31.0%) and brain (5.2%). Lenvatinib was added for 35 patients after any sign of progression. Fourteen patients received upfront surgery (16 debulking and 5 total) followed by adjuvant CRT in 16 patients. Thirty-one patients received upfront CRT with 2 patients receiving total resection after sufficient down-staging. Six (10%) patients could not complete radiotherapy but continued receiving systemic treatment. The median follow-up was 5.9 months. The median and 1-year OS were 6.2 months and 20.5%, and PFS were 3.7 months and 3.5%. Total RT dose over 60 Gy significantly improved median OS (7.5 vs 4.1 months, p = 0.012) and median PFS (4.4 vs 3.0, p = 0.010). Patients with less than 10 initial metastatic tumors showed better median OS (9.1 vs 4.6 months, p = 0.002) but not PFS (5.1 vs 3.6, p = 0.485). At interim analysis, early response (CR, PR and SD) of primary tumor was not associated with survival, while progression of distant metastases showed significantly worse median OS (9.8 vs 4.6 months, p = 0.001). More than 10 metastatic tumors (HR 2.73, 95% CI 1.32-5.66) and stable metastasis at interim analysis (HR 2.39, 95% CI 1.04-5.48) remained as significant factor in the multivariable cox regression analysis. Median OS and PFS of patients with less than 10 metastases showing no progression at interim analysis were 9.1 months, and 5.1 months. CONCLUSION Local treatment combined with chemotherapy for M1 ATC patients showed outcome comparable to those of non-metastatic ATC results. Active local treatment should be considered especially for patients with less than 10 metastases, and patients without distant progression in early response evaluation.
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Affiliation(s)
- J H Pyo
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - S Y Lee
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - I J Lee
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - S M Kim
- Department of Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J W Kim
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
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Kim J, Sung J, Yang D, Cho KS, Chung BH, Kim J, Kim JW. Optimal Planning Target Margin for Prostate Radiotherapy Based on Interfractional and Intrafractional Variability Assessment during 1.5T MR-Guided Radiotherapy. Int J Radiat Oncol Biol Phys 2023; 117:e401. [PMID: 37785341 DOI: 10.1016/j.ijrobp.2023.06.1534] [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) MR-guided radiotherapy (MRgRT) provides superior soft-tissue contrast over CT-based image guidance. We collected and analyzed daily pre-treatment (PRE) and real-time motion-monitoring (MM) MR images of patients receiving prostate radiotherapy to assess interfractional and intrafractional variability of prostate using two localization methods: pelvic bony anatomy (bone) and prostate during online adaptive radiotherapy (ART). MATERIALS/METHODS PRE and MM MRIs for the first five fractions of twenty prostate cancer patients who received definitive MRgRT with 1.5T MRI were collected. Using MIM software, rigid registration between PRE MRI and planning CT images based on pelvic bony anatomy and prostate reproduced bone localization and online ART, respectively. To determine interfractional setup margin (SM), prostate was delineated on all PRE MRIs registered after bone and prostate localizations by a radiation oncologist, and centroid values of prostate contours between planning CT and PRE MRIs were compared. To determine interobserver variability, another radiation oncologist, a medical physicist, and a radiotherapist contoured prostate for both localization methods. For internal margin (IM) assessment, we used MM MRIs of the five patients who had all three sets of coronal, sagittal, and axial cine images and determined the maximum contour displacement using in-house MATLAB-based software converting binary image files to 2D cine images with a superimposed grid of 1 mm spacing. RESULTS A total of 100 PRE and 25 MM MRIs were analyzed. Four hundred prostate contours were delineated on MR images registered with planning CT based on both bony anatomy and prostate. After bone localization, SM was 0.57±0.42 mm in left-right (LR), 2.45±1.98 mm in anterior-posterior (AP), and 2.28±2.08 mm in superior-inferior (SI) directions, and IO was 1.06±0.58 mm in LR, 2.32±1.08 mm in AP, and 3.30±1.85 mm in SI directions. After prostate localization, SM was 0.76±0.57 mm in LR, 1.89±1.60 mm in AP, and 2.2±1.79 mm in SI directions, and IO was 1.11±0.55 mm in LR, 2.13±1.07 mm in AP, and 3.53±1.65 mm in SI directions. Average IM was 2.12±0.86 mm, 2.24±1.07 mm, and 2.84±0.88 mm in LR, AP, and SI directions, respectively. CONCLUSION Using daily MRIs from MRgRT, we showed that movements in the SI direction were the largest source of variability in prostate definitive RT. In addition, interobserver variability was a non-negligible source of margin. Optimal PTV margin should also consider internal margin, especially in the SI direction.
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Affiliation(s)
- J Kim
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J Sung
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - D Yang
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - K S Cho
- Department of Urology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - B H Chung
- Department of Urology, Gangnam Severance Hospital, 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
| | - J W Kim
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
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Kim HU, Kim JW, Seo S, Jae J. Hydrolysis of regenerated cellulose from ionic liquids and deep eutectic solvent over sulfonated carbon catalysts. RSC Adv 2023; 13:8153-8162. [PMID: 36922947 PMCID: PMC10009878 DOI: 10.1039/d2ra08224a] [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] [Received: 12/25/2022] [Accepted: 02/23/2023] [Indexed: 03/15/2023] Open
Abstract
The efficient hydrolysis of cellulose into its monomer unit such as glucose or valuable cello-oligosaccharides is the critical step for the cost-effective production of biofuels and biochemicals. However, the current cellulose hydrolysis process involves high energy-demanding pretreatment (e.g., ball-milling) and long reaction times (>24 h). Herein, we investigated the feasibility of the dissolution/regeneration (DR) of cellulose in ionic liquids (ILs) and deep eutectic solvent (DES) as an alternative to ball-milling pretreatment for the effective hydrolysis of cellulose. Because chlorine-based solvents were reported to be the most active for cellulose pretreatment, [EMIM]Cl and [DMIM]DMP were selected as the IL molecules, and choline chloride-lactic acid and choline chloride-imidazole were selected as the DES molecules. The level of the crystallinity reduction of the regenerated cellulose were analyzed using XRD and SEM measurements. The hydrolysis kinetics of the regenerated cellulose from ILs and DES were examined at 150 °C using sulfonated carbon catalysts and compared with those of the ball-milled cellulose. Overall, the cellulose pretreatment using the ILs and the DES had superior kinetics for cellulose hydrolysis to the conventional ball milling treatment, suggesting a possibility to replace the current high energy-demanding ball-milling process with the energy-saving DR process. In addition, the utilization of supercritical carbon dioxide-induced carbonic acid as an in situ acid catalyst for the enhanced hydrolysis of cellulose was presented for the first time.
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Affiliation(s)
- Han Ung Kim
- School of Chemical Engineering, Pusan National University Busan 46241 Republic of Korea +82-51-510-2989
| | - Jong Wha Kim
- School of Chemical Engineering, Pusan National University Busan 46241 Republic of Korea +82-51-510-2989
| | - Sumin Seo
- School of Chemical Engineering, Pusan National University Busan 46241 Republic of Korea +82-51-510-2989
| | - Jungho Jae
- School of Chemical Engineering, Pusan National University Busan 46241 Republic of Korea +82-51-510-2989
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Frenel JS, Kim JW, Aryal N, Asher R, Berton D, Vidal L, Pautier P, Ledermann JA, Penson RT, Oza AM, Korach J, Huzarski T, Pignata S, Colombo N, Park-Simon TW, Tamura K, Sonke GS, Freimund AE, Lee CK, Pujade-Lauraine E. Efficacy of subsequent chemotherapy for patients with BRCA1/2-mutated recurrent epithelial ovarian cancer progressing on olaparib versus placebo maintenance: post-hoc analyses of the SOLO2/ENGOT Ov-21 trial. Ann Oncol 2022; 33:1021-1028. [PMID: 35772665 DOI: 10.1016/j.annonc.2022.06.011] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [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: 02/13/2022] [Revised: 06/16/2022] [Accepted: 06/20/2022] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND In the SOLO2 trial (ENGOT Ov-21; NCT01874353), maintenance olaparib in patients with platinum-sensitive relapsed ovarian cancer (PSROC) and BRCA mutation significantly improved progression-free survival (PFS) and prolonged overall survival (OS). Following disease progression on olaparib, efficacy of subsequent chemotherapy remains unknown. PATIENTS AND METHODS We conducted a post-hoc hypothesis-generating analysis of SOLO2 data to determine the efficacy of different chemotherapy regimens following RECIST disease progression in patients who received olaparib or placebo. We evaluated time to second progression (TTSP) calculated from the date of RECIST progression to the next progression/death. RESULTS The study population comprised 147 patients who received chemotherapy as their first subsequent treatment after RECIST progression. Of these, 69 (47%) and 78 (53%) were originally randomized to placebo and olaparib arms, respectively. In the placebo-treated cohort, 27/69 and 42/69 received non-platinum and platinum-based chemotherapy, respectively, compared with 24/78 and 54/78, respectively, in the olaparib-treated cohort. Among patients treated with chemotherapy (N = 147), TTSP was significantly longer in the placebo than in the olaparib arm: 12.1 versus 6.9 months [hazard ratio (HR) 2.17, 95% confidence interval (CI) 1.47-3.19]. Similar result was obtained on multivariable analysis adjusting for prognostic factors at RECIST progression (HR 2.13, 95% CI 1.41-3.22). Among patients treated with platinum-based chemotherapy (n = 96), TTSP was significantly longer in the placebo arm: 14.3 versus 7.0 months (HR 2.89, 95% CI 1.73-4.82). Conversely, among patients treated with non-platinum-based chemotherapy (n = 51), the TTSP was comparable in the placebo and olaparib arms: 8.3 versus 6.0 months (HR 1.58, 95% CI 0.86-2.90). CONCLUSIONS Following progression from maintenance olaparib in the recurrent setting, the efficacy of platinum-based subsequent chemotherapy seems to be reduced in BRCA1/2-mutated patients with PSROC compared to patients not previously receiving poly (ADP-ribose) polymerase inhibitors (PARPi). The optimal strategy for patients who relapse after PARPi is an area of ongoing research.
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Affiliation(s)
- J S Frenel
- Institut de Cancerologie de l'Ouest, GINECO, GINEGEPS, Centre René Gauducheau, Saint-Herblain, France.
| | - J W Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - N Aryal
- NHMRC CTC Centre, University of Sydney, Camperdown, Sydney, Australia
| | - R Asher
- NHMRC CTC Centre, University of Sydney, Camperdown, Sydney, Australia
| | - D Berton
- Institut de Cancerologie de l'Ouest, GINECO, GINEGEPS, Centre René Gauducheau, Saint-Herblain, France
| | - L Vidal
- GEICO & H Clínic de Barcelona, Barcelona, Spain
| | - P Pautier
- GINECO & Gustave Roussy Cancer Center, Villejuif, France
| | | | - R T Penson
- Massachusetts General Hospital, Boston, USA
| | - A M Oza
- Princess Margaret Cancer Centre, Toronto, Canada
| | - J Korach
- ISGO & Chaim Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - T Huzarski
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | - S Pignata
- MITO & Department of Urology and Gynecology, Istituto Nazionale Tumori IRCCS Fondazione G. Pascale Napoli, Naples, Italy
| | - N Colombo
- MaNGO & European Institute of Oncology IRCCS and University of Milan-Bicocca, Milano, Italy
| | - T W Park-Simon
- AGO & Medical School, Department of Gynecologic Oncology, Hannover, Hannover, Germany
| | - K Tamura
- Department of Breast and Medical Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - G S Sonke
- DGOG & Netherlands Cancer Institute, Amsterdam, Netherlands
| | - A E Freimund
- Peter MacCallum Cancer Centre, Melbourne, Australia
| | - C K Lee
- NHMRC CTC Centre, University of Sydney, Camperdown, Sydney, Australia
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Kim JW, Vella C, Parvez W, Verma R, Majid M, Woltmann G, Pareek M, Bennett J, Agrawal S, Sudhir R, Ahyow L, Tufail M, Haldar P. Impact of COVID-19 on the diagnosis and management of lung cancer and TB. Int J Tuberc Lung Dis 2022; 26:372-374. [PMID: 35351244 DOI: 10.5588/ijtld.22.0045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- J W Kim
- Department of Respiratory Sciences, University of Leicester, Leicester, Department of Respiratory Medicine, University Hospitals of Leicester NHS Trust, Leicester
| | - C Vella
- Department of Respiratory Medicine, University Hospitals of Leicester NHS Trust, Leicester
| | - W Parvez
- Department of Respiratory Medicine, University Hospitals of Leicester NHS Trust, Leicester
| | - R Verma
- Department of Respiratory Sciences, University of Leicester, Leicester, Department of Respiratory Medicine, University Hospitals of Leicester NHS Trust, Leicester
| | - M Majid
- Department of Respiratory Medicine, University Hospitals of Leicester NHS Trust, Leicester
| | - G Woltmann
- Department of Respiratory Sciences, University of Leicester, Leicester, Department of Respiratory Medicine, University Hospitals of Leicester NHS Trust, Leicester
| | - M Pareek
- Department of Respiratory Sciences, University of Leicester, Leicester
| | - J Bennett
- Department of Respiratory Medicine, University Hospitals of Leicester NHS Trust, Leicester
| | - S Agrawal
- Department of Respiratory Medicine, University Hospitals of Leicester NHS Trust, Leicester
| | - R Sudhir
- Department of Respiratory Medicine, University Hospitals of Leicester NHS Trust, Leicester
| | - L Ahyow
- UK Health Security Agency, London, UK
| | - M Tufail
- Department of Respiratory Medicine, University Hospitals of Leicester NHS Trust, Leicester
| | - P Haldar
- Department of Respiratory Sciences, University of Leicester, Leicester, Department of Respiratory Medicine, University Hospitals of Leicester NHS Trust, Leicester
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Kim JW, Woo SB, Song JI, Kwon HK. An observational study of hydrodynamic impact on water mass transport due to tidal power generation. Sci Total Environ 2022; 807:151013. [PMID: 34662618 DOI: 10.1016/j.scitotenv.2021.151013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 10/08/2021] [Accepted: 10/11/2021] [Indexed: 06/13/2023]
Abstract
The world's largest Sihwa Tidal Power Plant (TPP), located on the west coast of Korea, was built in 2011 for the purpose of improving water quality and producing renewable energy. After several years of actual operation, most of the original purpose was achieved, but unexpected coastal environmental changes such as tidal flat damage and sediment accumulation also occurred. In this study, in order to understand the causes of these environmental changes, field observations were conducted near TPP, and spatial and temporal variability of flow structure and water exchange process were investigated. Three-dimensional velocity data were collected along the closed line surrounding the outside of the TPP for 11 h during spring tide and analyzed according to two discharge phases: power generation phase (PGP) and drainage phase (DP). The results show that the depth-averaged maximum current velocity was more than three times greater at DP than at PGP. Jet-like flow during DP caused very high horizontal shear, whereas vertical shear was relatively weak, indicating that the horizontal and vertical flow structures were very different. The most notable result is that the mass transport patterns between PGP and DP are significantly different, i.e., during PGP, mass transport is dominated on the left side of the TPP, whereas during DP, it occurs at the front of the TPP. This means that there is a strong spatiotemporal asymmetry between the inflow from the downstream (outside of the TPP) during PGP and the outflow from the upstream (inside of the TPP) during DP. These asymmetric processes can have a significant impact on the material exchange and sediment transport near the TPP. Since observational studies on TPP are extremely rare, this study is expected to contribute to future TPP related research, such as numerical modeling.
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Affiliation(s)
- J W Kim
- Department of Ocean Sciences, Inha University, Incheon 22212, Republic of Korea
| | - S-B Woo
- Department of Ocean Sciences, Inha University, Incheon 22212, Republic of Korea.
| | - J I Song
- Department of Ocean Sciences, Inha University, Incheon 22212, Republic of Korea
| | - H-K Kwon
- Korea Water Resources Corporation, Ansan 15637, Republic of Korea
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Abstract
OBJECTIVES The present study aimed to investigate the incidence of and risk factors for postoperative pneumonia and aspiration pneumonia after hip fracture surgery. DESIGN Retrospective cohort study from 2005 to 2021. SETTING Asan Medical Center in Seoul, Republic of Korea. PARTICIPANTS A total 1,208 patients aged ≥ 65 years who underwent hip fracture surgery. MEASUREMENTS Postoperative pneumonia was defined as cases with new infiltration on chest x-ray or chest computed tomography (CT) after surgery or confirmed by a pulmonologist's consultation and diagnosis. Aspiration pneumonia was defined as: 1) radiologic findings of hospital-acquired pneumonia on chest radiographs or CT, medical record of aspiration pneumonia confirmed by a pulmonologist's consultation, and history of vomiting or aspiration, or 2) gravity-dependent opacity on chest CT when the history of vomiting or aspiration is ambiguous. Patient demographics, past medical history, pre-injury Koval score, Charlson Comorbidity Index (CCI), blood test results, length of hospital stay, and in-hospital mortality were evaluated. A comparison analysis and binary logistic regression were performed to identify the incidence and risk factors for postoperative pneumonia and aspiration pneumonia. RESULTS Postoperative pneumonia was diagnosed in 47 patients (3.9%), including 20 with aspiration pneumonia (1.7%). In the multivariate analysis, postoperative delirium (odds ratio [OR], 3.42; P < 0.001), American Society of Anesthesiologists (ASA) scores ≥ 3 (OR, 2.11; P = 0.021), and CCI (OR, 1.21; P = 0.013) were significant risk factors for postoperative pneumonia. Male sex (OR, 3.01; P = 0.017), postoperative delirium (OR, 3.16; P = 0.014), and preoperative serum albumin levels < 3.5 g/dL (OR, 7.00; P = 0.010) were significant risk factors for aspiration pneumonia. CONCLUSION ASA classification ≥ 3, higher CCI, and postoperative delirium were the risk factors for postoperative pneumonia. Male sex, postoperative delirium, and lower preoperative serum albumin level were the risk factors for aspiration pneumonia. Thus, physicians should pay attention to patients with the risk factors.
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Affiliation(s)
- J Ahn
- Ji Wan Kim, Department of Orthopedic Surgery, University of Ulsan, College of Medicine, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea, Phone: +82-2-3010-3530, Fax: +82-2-2045-4542, Email address: , ORCID: 0000-0002-3524-8706
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Jeong SY, Hwang KT, Oh CW, Kim JW, Sohn OJ, Kim JW, Cho YH, Park KC. Infographic: Mid-term outcomes after the surgical treatment of atypical femoral fractures : minimum three-year follow-up. Bone Joint J 2021; 103-B:1646-1647. [PMID: 34719273 DOI: 10.1302/0301-620x.103b11.bjj-2021-1428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- S-Y Jeong
- Department of Orthopaedic Surgery, Hanyang University Guri Hospital, Guri, South Korea
| | - K-T Hwang
- Hanyang University College of Medicine, Seoul, South Korea
| | - C-W Oh
- Department of Orthopedic Surgery, Kyungpook National University Hospital, Daegu, South Korea
| | - J-W Kim
- Department of Orthopedic Surgery, Kyungpook National University Hospital, Daegu, South Korea
| | - O J Sohn
- Yeungnam University, Gyeongsan, South Korea
| | - J W Kim
- Department of Orthopaedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Y-H Cho
- Daegu Fatima Hospital, Daegu, South Korea
| | - K C Park
- Department of Orthopaedic Surgery, Hanyang University Guri Hospital, Guri, South Korea
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Kim MJ, Kim JW, Kim MS, Choi SY, Na JI. Generalized erythema multiforme-like skin rash following the first dose of COVID-19 vaccine (Pfizer-BioNTech). J Eur Acad Dermatol Venereol 2021; 36:e98-e100. [PMID: 34661942 PMCID: PMC8656619 DOI: 10.1111/jdv.17757] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 09/04/2021] [Accepted: 10/13/2021] [Indexed: 12/18/2022]
Affiliation(s)
- M J Kim
- Department of Dermatology, Seoul National University Bundang Hospital, 82 Gumi-ro 173 Beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Korea
| | - J W Kim
- Department of Dermatology, Seoul National University Bundang Hospital, 82 Gumi-ro 173 Beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Korea
| | - M S Kim
- Department of Dermatology, Seoul National University Bundang Hospital, 82 Gumi-ro 173 Beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Korea
| | - S Y Choi
- Department of Dermatology, Ilsan Paik Hospital, Inje University, 170, Juhwa-ro, Ilsanseo-gu, Goyang-si, Gyeonggi-do, Korea
| | - J I Na
- Department of Dermatology, Seoul National University Bundang Hospital, 82 Gumi-ro 173 Beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Korea
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Yang BR, Cha SH, Lee KE, Kim JW, Lee J, Shin KH. Effect of dipeptidyl peptidase IV inhibitors, thiazolidinedione, and sulfonylurea on osteoporosis in patients with type 2 diabetes: population-based cohort study. Osteoporos Int 2021; 32:1705-1712. [PMID: 33594487 DOI: 10.1007/s00198-020-05801-6] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 12/15/2020] [Indexed: 12/01/2022]
Abstract
UNLABELLED The population-based cohort study used the Korean National Health Insurance claims database to evaluate the effect of anti-diabetic drugs on osteoporosis. The use of DPP-IV inhibitors does not increase the risk of osteoporosis compared with the use of sulfonylureas in patients with type 2 diabetes mellitus, while a weak association was found between thiazolidinediones and increased risk of osteoporosis. PURPOSE The current study aimed to evaluate the effect of dipeptidyl peptidase IV inhibitors (DPP-IVi), thiazolidinedione (TZD), and sulfonylurea (SU) on osteoporosis in patients with type 2 diabetes. METHODS A population-based cohort study was conducted in the Republic of Korea using the Korean National Health Insurance claims database. Data from 2012 to 2017 for patients of 50-99 years of age who were prescribed DPP-IVi, TZD, or SU during 2013-2015 were extracted from the database. Based on pre-defined criteria, a total of 381,404 patients were analyzed after inverse probability of treatment weighting. The association between the study drugs and osteoporosis was estimated using Cox proportional hazards models. Data of 220,166 patients who were prescribed DPP-IVi, 18,630 who were prescribed TZD, and 142,608 patients who were prescribed SU were set. RESULTS In the multivariate-adjusted analysis, the hazard ratio (HR) of osteoporosis in the DPP-IVi group was not significantly different from that of the SU group (HR: 0.97; 95% confidence interval (CI) 0.94-1.00), whereas the HR of osteoporosis in the TZD group was higher (HR: 1.13; 95% CI 1.06-1.20). In the subgroup analysis, the HRs of osteoporosis were higher with pioglitazone (HR: 1.14; 95% CI 1.06-1.23) in the TZD group and with glibenclamides (HR: 1.39; 95% CI 1.09-1.77) in the SU group, whereas drugs with lower HR in the DPP-IVi group were saxagliptin (HR: 0.93; 95% CI 0.87-0.99) and sitagliptin (HR: 0.93; 95% CI 0.89-0.97). CONCLUSION DPP-IV inhibitors do not increase the risk of osteoporosis compared with sulfonylureas in patients with type 2 diabetes mellitus, while a weak association was found between thiazolidinediones and increased risk of osteoporosis.
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Affiliation(s)
- B R Yang
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
| | - S H Cha
- Department of Statistics, College of Natural Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - K E Lee
- Department of Statistics, College of Natural Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - J W Kim
- Department of Family Medicine, Daegu Health College Hospital, Daegu, Republic of Korea
| | - J Lee
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea
| | - K-H Shin
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea.
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Yang JH, Cho SI, Kim DH, Yoon JY, Moon J, Kim JW, Choi S, Suh DH. Pilot study of fractional microneedling radiofrequency for hidradenitis suppurativa assessed by clinical response and histology. Clin Exp Dermatol 2021; 47:335-342. [PMID: 34431555 DOI: 10.1111/ced.14905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/19/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Hidradenitis suppurativa (HS) is a devastating chronic inflammatory skin disease with frequent recurrences. Various systemic treatments and procedures have been used but the efficacy of fractional microneedling radiofrequency (FMR) has not been reported. AIM To evaluate the clinical and histological efficacy of FMR in the treatment of HS lesions. METHODS An 8-week, prospective, split-body, unblinded study was conducted, which enrolled 10 adult patients with mild to moderate HS to receive 3 sessions of FMR treatment biweekly. HS severity was assessed using the number and type of lesions, HS Physician Global Assessment (HS-PGA) and the modified Sartorius score (mSS). Skin biopsies were performed on participants to assess change in inflammation before and after FMR. RESULTS Severity of HS was significantly reduced on the FMR-treated side of the body, but not on the control side. Inflammatory HS lesions were significantly reduced after 4 weeks, while HS-PGA and mSS were significantly decreased after 6 weeks. Immunohistochemistry staining showed decreased expression of inflammatory markers including neutrophil elastases, interleukin (IL)-8 and IL-17, tumour necrosis factor-α, transforming growth factor-β1 and matrix metalloproteinases. CONCLUSION FMR may be a viable treatment option for mild to moderate HS.
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Affiliation(s)
- J H Yang
- Department of Dermatology, Seoul National University College of Medicine, Seoul, South Korea.,Acne, Rosacea, Seborrheic Dermatitis and Hidradenitis Suppurativa Research Laboratory, Seoul National University Hospital, Seoul, South Korea
| | - S I Cho
- Department of Dermatology, Seoul National University College of Medicine, Seoul, South Korea
| | - D H Kim
- Department of Dermatology, Seoul National University College of Medicine, Seoul, South Korea
| | - J Y Yoon
- Acne, Rosacea, Seborrheic Dermatitis and Hidradenitis Suppurativa Research Laboratory, Seoul National University Hospital, Seoul, South Korea
| | - J Moon
- Reone Skin Clinic, Seoul, South Korea
| | - J W Kim
- Department of Dermatology, Seoul National University College of Medicine, Seoul, South Korea
| | - S Choi
- Department of Dermatology, Seoul National University College of Medicine, Seoul, South Korea
| | - D H Suh
- Department of Dermatology, Seoul National University College of Medicine, Seoul, South Korea.,Acne, Rosacea, Seborrheic Dermatitis and Hidradenitis Suppurativa Research Laboratory, Seoul National University Hospital, Seoul, South Korea
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12
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Jung IJ, Choi EJ, Lee BG, Kim JW. Population-based, three-dimensional analysis of age- and sex-related femur shaft geometry differences. Osteoporos Int 2021; 32:1631-1638. [PMID: 33501569 DOI: 10.1007/s00198-021-05841-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 01/11/2021] [Indexed: 10/22/2022]
Abstract
UNLABELLED This study deals with differences of femoral geometric focus on the bowing and width. Analysis using three-dimensional skeletonization showed increase of femoral bowing and femur width over life (more in women), and widening of the medullary canal only in women after 50 years old, not in men. INTRODUCTION The changes in femur geometry that occur with aging and lead to fragility or insufficiency fracture remain unclear. The role of the lower limb geometry, including the femur and femoral bowing, has become a point of discussion, especially in atypical femur fracture. This study aimed to analyze femur shaft geometry using three-dimensional skeletonization. METHODS We acquired computed tomography images of both femurs obtained. A total of 1400 age- and sex-stratified participants were enrolled and were divided into subgroups according to age (by decade) and sex. The computed tomography images were used to produce 3-dimensional samplings of anatomical elements of the human femur using reconstruction and parametrization from these datasets. The process of skeletonization was conducted to obtain compact representation of the femur. With the skeletonization, we were able to compare all parameters according to age and sex. RESULTS The femur length was 424.4 ± 28.6 mm and was longer in men (P < 0.001). The minimum diameter of the medullary canal was 8.9 ± 2.0 mm. The radius of curvature (ROC) was 906.9 ± 193.3 mm. Men had a larger femur length, femur outer diameter, and the narrowest medullary diameter (P < 0.001, respectively). Women had significantly smaller ROC (P < 0.001). ROC decreased by 19.4% in men and 23.6% in women between the ages of 20 to 89 years. Femur width increased over life by 11.4% in men and 24.5% in women. Between the ages of 50 and 89 years, the medullary canal appears to have increased by 32.7% in women. CONCLUSION This geometry analysis demonstrated that femoral bowing and femoral width increased related to aging, and that the medullary canal widened after the age of 50 years in women. This cross-sectional study revealed important age- and sex-related differences in femur shaft geometry that occur with aging.
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Affiliation(s)
- I J Jung
- University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - E J Choi
- Department of Orthopaedics, Asan Medical Center, Seoul, Republic of Korea
| | - B G Lee
- Division of Computer Engineering, Dongseo University, Busan, Republic of Korea
| | - J W Kim
- Department of Orthopaedics, Asan Medical Center, Seoul, Republic of Korea.
- Department of Orthopedic Surgery, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea.
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13
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Kim HJ, Cho H, Park M, Kim JW, Ahn SJ, Lyoo CH, Suh SH, Ryu YH. MRI-Visible Perivascular Spaces in the Centrum Semiovale Are Associated with Brain Amyloid Deposition in Patients with Alzheimer Disease-Related Cognitive Impairment. AJNR Am J Neuroradiol 2021; 42:1231-1238. [PMID: 33985952 DOI: 10.3174/ajnr.a7155] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [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: 06/18/2020] [Accepted: 01/21/2021] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE The association of perivascular spaces in the centrum semiovale with amyloid accumulation among patients with Alzheimer disease-related cognitive impairment is unknown. We evaluated this association in patients with Alzheimer disease-related cognitive impairment and β-amyloid deposition, assessed with [18F] florbetaben PET/CT. MATERIALS AND METHODS MR imaging and [18F] florbetaben PET/CT images of 144 patients with Alzheimer disease-related cognitive impairment were retrospectively evaluated. MR imaging-visible perivascular spaces were rated on a 4-point visual scale: a score of ≥3 or <3 indicated a high or low degree of MR imaging-visible perivascular spaces, respectively. Amyloid deposition was evaluated using the brain β-amyloid plaque load scoring system. RESULTS Compared with patients negative for β-amyloid, those positive for it were older and more likely to have lower cognitive function, a diagnosis of Alzheimer disease, white matter hyperintensity, the Apolipoprotein E ε4 allele, and a high degree of MR imaging-visible perivascular spaces in the centrum semiovale. Multivariable analysis, adjusted for age and Apolipoprotein E status, revealed that a high degree of MR imaging-visible perivascular spaces in the centrum semiovale was independently associated with β-amyloid positivity (odds ratio, 2.307; 95% CI, 1.036-5.136; P = .041). CONCLUSIONS A high degree of MR imaging-visible perivascular spaces in the centrum semiovale independently predicted β-amyloid positivity in patients with Alzheimer disease-related cognitive impairment. Thus, MR imaging-visible perivascular spaces in the centrum semiovale are associated with amyloid pathology of the brain and could be an indirect imaging marker of amyloid burden in patients with Alzheimer disease-related cognitive impairment.
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Affiliation(s)
- H J Kim
- From the Department of Nuclear Medicine (H.J.K., Y.H.R.)
- Department of Nuclear Medicine (H.J.K.), Yongin Severance Hospital, Yonsei University College of Medicine, Yongin-si, South Korea
| | | | - M Park
- Radiology (M.P., J.W.K., S.J.A., S.H.S.), Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - J W Kim
- Radiology (M.P., J.W.K., S.J.A., S.H.S.), Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - S J Ahn
- Radiology (M.P., J.W.K., S.J.A., S.H.S.), Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | | | - S H Suh
- Radiology (M.P., J.W.K., S.J.A., S.H.S.), Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Y H Ryu
- From the Department of Nuclear Medicine (H.J.K., Y.H.R.)
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14
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Park HS, Kang B, Chon HJ, Im HS, Lee CK, Kim I, Kang MJ, Hwang JE, Bae WK, Cheon J, Park JO, Hong JY, Kang JH, Kim JH, Lim SH, Kim JW, Kim JW, Yoo C, Choi HJ. Liposomal irinotecan plus fluorouracil/leucovorin versus FOLFIRINOX as the second-line chemotherapy for patients with metastatic pancreatic cancer: a multicenter retrospective study of the Korean Cancer Study Group (KCSG). ESMO Open 2021; 6:100049. [PMID: 33578192 PMCID: PMC7878976 DOI: 10.1016/j.esmoop.2021.100049] [Citation(s) in RCA: 9] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/31/2020] [Accepted: 01/03/2021] [Indexed: 12/16/2022] Open
Abstract
Background There is no clear consensus on the recommended second-line treatment for patients with metastatic pancreatic cancer who have disease progression following gemcitabine-based therapy. We retrospectively evaluated the clinical outcomes of liposomal irinotecan (nal-IRI) plus fluorouracil/leucovorin (FL) and FOLFIRINOX (fluorouracil, leucovorin, irinotecan, and oxaliplatin) in patients who had failed on the first-line gemcitabine-based therapy. Patients and methods From January 2015 to August 2019, 378 patients with MPC who had received nal-IRI/FL (n = 104) or FOLFIRINOX (n = 274) as second-line treatment across 11 institutions were included in this retrospective study. Results There were no significant differences in baseline characteristics between groups, except age and first-line regimens. With a median follow-up of 6 months, the median progression-free survival (PFS) was 3.7 months with nal-IRI/FL versus 4.6 months with FOLFIRINOX (P = 0.44). Median overall survival (OS) was 7.7 months with nal-IRI/FL versus 9.7 months with FOLFRINOX (P = 0.13). There was no significant difference in PFS and OS between the two regimens in the univariate and multivariate analyses. The subgroup analysis revealed that younger age (<70 years) was associated with better OS with FOLFIRINOX. In contrast, older age (≥70 years) was associated with better survival outcomes with nal-IRI/FL. Adverse events were manageable with both regimens; however, the incidence of grade 3 or higher neutropenia and peripheral neuropathy was higher in patients treated with FOLFIRINOX than with nal-IRI/FL. Conclusions Second-line nal-IRI/FL and FOLFIRINOX showed similar effectiveness outcomes after progression following first-line gemcitabine-based therapy. Age could be the determining factor for choosing the appropriate second-line therapy. This multicenter retrospective study investigated nal-IRI/FL and FOLFIRINOX outcomes after gemcitabine-based therapy. We found no significant differences in outcome between nal-IRI/FL and FOLFIRINOX treatment. Both regimens were well tolerated; however, neutropenia and peripheral neuropathy were more frequent with FOLFIRINOX. Age (cut-off, 70 years) showed differential efficacy between chemotherapy regimens.
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Affiliation(s)
- H S Park
- Division of Medical Oncology, Department of Internal Medicine, St. Vincent's Hospital, The Catholic University of Korea, Seoul, Korea
| | - B Kang
- Medical Oncology, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - H J Chon
- Medical Oncology, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - H-S Im
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - C-K Lee
- Division of Medical Oncology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea
| | - I Kim
- Department of Internal Medicine, Inje University Haeundae Paik Hospital, Inje University College of Medicine, Busan, Korea
| | - M J Kang
- Department of Internal Medicine, Inje University Haeundae Paik Hospital, Inje University College of Medicine, Busan, Korea
| | - J E Hwang
- Division of Hematology-Oncology, Department of Internal Medicine, Chonnam National University Medical School and Hwasun Hospital, Gwangju, Korea
| | - W K Bae
- Division of Hematology-Oncology, Department of Internal Medicine, Chonnam National University Medical School and Hwasun Hospital, Gwangju, Korea
| | - J Cheon
- Department of Hematology and Oncology, Ulsan University Hospital, Ulsan University College of Medicine, Ulsan, Korea
| | - J O Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University College of Medicine, Seoul, Korea
| | - J Y Hong
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University College of Medicine, Seoul, Korea
| | - J H Kang
- Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - J H Kim
- Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - S H Lim
- Division of Hematology-Oncology, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - J W Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - J-W Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - C Yoo
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
| | - H J Choi
- Division of Medical Oncology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea.
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15
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Alhazemi AA, Park S, Shin JH, Cho YC, Kim Y, Lee J, Kim PH, Kim JW, Chu HH. Safety and efficacy of transarterial embolisation for treatment of dorsal pancreatic artery haemorrhage. Clin Radiol 2020; 76:314.e9-314.e15. [PMID: 33334554 DOI: 10.1016/j.crad.2020.11.111] [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] [Received: 06/04/2020] [Accepted: 11/12/2020] [Indexed: 11/28/2022]
Abstract
AIM To evaluate the safety and efficacy of transarterial embolisation (TAE) of dorsal pancreatic artery (DPA) haemorrhage. MATERIALS AND METHODS Nineteen consecutive patients (M:F = 16:3, mean age 59.6 years) who underwent TAE of DPA in three tertiary medical centres between January 2001 to January 2020 were reviewed retrospectively. Angiographic features and the technical and clinical outcomes of TAE were analysed. RESULTS The clinical presentations were a bloody drain from the Jackson-Pratt drainage tube (n=8), melaena (n=7), abdominal pain (n=4), and haematochezia (n=3). Angiographic findings included pseudoaneurysm (n=14), contrast media extravasation (n=4), or abrupt cut-off of the arterial branch (n=1). The NBCA (N-butyl-cyanoacrylate; n=4), microcoils (n=4), and a combination of these agents (n=7) were used as embolic agents. The most common origin of the DPA in the present study cohort was the splenic artery (n=7), followed by the coeliac trunk (n=4), common hepatic artery (n=4), and superior mesenteric artery (n=4). Technical and clinical success rates were 100% and 84.2% (16/19), respectively. Of the three clinically unsuccessful cases, two patients were revealed to have newly developed bleeding from another artery. The other patient expired 1 day after the TAE procedure due to a progression of hepatic failure. In one patient, an asymptomatic non-target embolisation occurred in the right posterior tibial artery as a procedure-related complication. No major complications were observed. CONCLUSION TAE is safe and effective for the management of bleeding from the DPA. It is important to be aware of the DPA as a potential bleeding source, including the relevant clinical characteristics.
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Affiliation(s)
- A A Alhazemi
- Department of Radiology, King Fahd Central Hospital, Jazan 45196, Saudi Arabia
| | - S Park
- Department of Radiology, Gil Medical Centre, Gachon University College of Medicine, Incheon, Republic of Korea
| | - J H Shin
- Department of Radiology and Research Institute of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea.
| | - Y C Cho
- Department of Radiology and Research Institute of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Y Kim
- Department of Radiology Chungbuk National University Hospital, Cheongju, Republic of Korea
| | - J Lee
- Department of Radiology Chungbuk National University Hospital, Cheongju, Republic of Korea
| | - P H Kim
- Department of Radiology and Research Institute of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - J W Kim
- Department of Radiology and Research Institute of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - H H Chu
- Department of Radiology and Research Institute of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
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16
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Han HJ, Kim JW, Jeong JH. Intramedullary pneumorrhachis following a cervical epidural steroid injection. Neurochirurgie 2020; 67:189-192. [PMID: 33049286 DOI: 10.1016/j.neuchi.2020.08.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 06/29/2020] [Accepted: 08/27/2020] [Indexed: 10/23/2022]
Abstract
Pneumorrhachis (PR) is a rare radiological condition characterized by the presence of intraspinal air. PR is commonly classified as spontaneous (nontraumatic), traumatic, or iatrogenic, and iatrogenic PR is the most common and often occurs secondary to invasive procedures such as epidural anesthesia, lumbar puncture, or spinal surgery. PR is usually asymptomatic, but it can produce symptoms associated with its underlying pathology. Here, we report a rare case of intramedullary cervical PR following a cervical epidural steroid injection (ESI) and include pertinent discussion.
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Affiliation(s)
- H J Han
- Department of Neurosurgery, Dongguk University Gyeongju Hospital, Dongguk University College of Medicine, Dongdae-ro 87, 38067 Gyeongju, Republic of Korea.
| | - J W Kim
- Department of Neurosurgery, Dongguk University Gyeongju Hospital, Dongguk University College of Medicine, Dongdae-ro 87, 38067 Gyeongju, Republic of Korea.
| | - J H Jeong
- Department of Neurosurgery, Dongguk University Gyeongju Hospital, Dongguk University College of Medicine, Dongdae-ro 87, 38067 Gyeongju, Republic of Korea.
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17
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Abstract
Autosomal dominant hypocalcified amelogenesis imperfecta (ADHCAI; OMIM #130900) is a genetic disorder exhibiting severe hardness defects and reduced fracture toughness of dental enamel. While the condition is nonsyndromic, it can be associated with other craniofacial anomalies, such as malocclusions and delayed or failed tooth eruption. Truncation mutations in FAM83H (OMIM *611927) are hitherto the sole cause of ADHCAI. With human genetic studies, Fam83h knockout and mutation-knock-in mouse models indicated that FAM83H does not serve a critical physiologic function during enamel formation and suggested a neomorphic mutation mechanism causing ADHCAI. The function of FAM83H remains obscure. FAM83H has been shown to interact with various isoforms of casein kinase 1 (CK1) and keratins and to mediate organization of keratin cytoskeletons and desmosomes. By considering FAM83H a scaffold protein to anchor CK1s, further molecular characterization of the protein could gain insight into its functions. In this study, we characterized 9 kindreds with ADHCAI and identified 3 novel FAM83H truncation mutations: p.His437*, p.Gln459*, and p.Glu610*. Some affected individuals exhibited hypoplastic phenotypes, in addition to the characteristic hypocalcification enamel defects, which have never been well documented. Failed eruption of canines or second molars in affected persons was observed in 4 of the families. The p.Glu610* mutation was located in a gap area (amino acids 470 to 625) within the zone of previously reported pathogenic variants (amino acids 287 to 694). In vitro pull-down studies with overexpressed FAM83H proteins in HEK293 cells demonstrated an interaction between FAM83H and SEC16A, a protein component of the COP II complex at endoplasmic reticulum exit sites. The interaction was mediated by the middle part (amino acids 287 to 657) of mouse FAM83H protein. Results of this study significantly extended the phenotypic and genotypic spectrums of FAM83H-associated ADHCAI and suggested a role for FAM83H in endoplasmic reticulum-to-Golgi vesicle trafficking and protein secretion (dbGaP phs001491.v1.p1).
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Affiliation(s)
- S K Wang
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI, USA.,Department of Dentistry, School of Dentistry, National Taiwan University, Jhongjheng District, Taipei City, Taiwan
| | - H Zhang
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - C Y Hu
- Department of Prosthodontics, National Taiwan University Hospital, Jhongjheng District, Taipei City, Taiwan
| | - J F Liu
- Division of Pediatric Dentistry, Department of Stomatology, Taichung Veterans General Hospital, Xitun District, Taichung City, Taiwan
| | - S Chadha
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - J W Kim
- Department of Pediatric Dentistry and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Republic of Korea.,Department of Molecular Genetics and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Republic of Korea
| | - J P Simmer
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - J C C Hu
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
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18
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Wenger DS, Triplette M, Shahrir S, Akgun KM, Wongtrakool C, Brown ST, Kim JW, Soo Hoo GW, Rodriguez-Barradas MC, Huang L, Feemster LC, Zifodya J, Crothers K. Associations of marijuana with markers of chronic lung disease in people living with HIV. HIV Med 2020; 22:92-101. [PMID: 33022830 DOI: 10.1111/hiv.12966] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 08/21/2020] [Accepted: 08/26/2020] [Indexed: 12/18/2022]
Abstract
OBJECTIVES The relationship between marijuana use and markers of chronic lung disease in people living with HIV (PLWH) is poorly understood. METHODS We performed a cross-sectional analysis of the Examinations of HIV-Associated Lung Emphysema (EXHALE) study, including 162 HIV-positive patients and 138 participants without HIV. We modelled marijuana exposure as: (i) current daily or weekly marijuana smoking vs. monthly or less often; or (ii) cumulative marijuana smoking (joint-years). Linear and logistic regression estimated associations between marijuana exposure and markers of lung disease, adjusted for tobacco smoking and other factors. RESULTS In PLWH, current daily or weekly marijuana use was associated with a larger forced vital capacity (FVC), larger total lung capacity and increased odds of radiographic emphysema compared with marijuana non-smokers in adjusted models; these associations were not statistically significant in participants without HIV. Marijuana joint-years were associated with higher forced expiratory volume in 1 s and FVC in PLWH but not with emphysema. CONCLUSIONS In PLWH, marijuana smoking was associated with higher lung volumes and potentially with radiographic emphysema. No consistently negative associations were observed between marijuana and measures of chronic lung health.
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Affiliation(s)
- D S Wenger
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Washington, Seattle, WA, USA
| | - M Triplette
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Washington, Seattle, WA, USA.,Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - S Shahrir
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Washington, Seattle, WA, USA
| | - K M Akgun
- Department of Internal Medicine, Veterans Affairs (VA) Connecticut Healthcare System and Yale University School of Medicine, New Haven, CT, USA
| | - C Wongtrakool
- Atlanta VA Medical Center and Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - S T Brown
- Department of Medicine, James J. Peters VA Medical Center, Bronx, NY, USA.,Department of Medicine, Icahn School of Medicine at Mt. Sinai, New York, NY, USA
| | - J W Kim
- Department of Medicine, James J. Peters VA Medical Center, Bronx, NY, USA
| | - G W Soo Hoo
- VA Greater Los Angeles Healthcare System and Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - M C Rodriguez-Barradas
- Michael E. DeBakey VA Medical Center and Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | - L Huang
- Center for AIDS Research, University of California at San Francisco, San Francisco, CA, USA
| | - L C Feemster
- VA Puget Sound Healthcare System, University of Washington, Seattle, WA, USA
| | - J Zifodya
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Washington, Seattle, WA, USA
| | - K Crothers
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Washington, Seattle, WA, USA.,VA Puget Sound Healthcare System, University of Washington, Seattle, WA, USA
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19
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Park JS, Kim TH, Oh YJ, Park EJ, Kim JW, Jeong H. Investigation of photodarkening in tandem-pumped Yb-doped fibers. Opt Express 2020; 28:27316-27323. [PMID: 32988028 DOI: 10.1364/oe.400094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 08/25/2020] [Indexed: 06/11/2023]
Abstract
Investigation of photodarkening (PD) in Yb-doped fibers tandem-pumped at 1018 nm is reported. For a homemade Yb-doped aluminosilicate double-clad fiber (YADF), the transmitted power of a 633 nm probe beam is reduced by 2.4% over 2 hours for the tandem pumping configuration at 1018 nm, which is significantly smaller than 33.3% for a laser diode (LD) pumping at 976 nm. A tandem-pumped Yb fiber amplifier also shows a much smaller decrease in the amplified output power over time than a LD-pumped Yb fiber amplifier. Based on fluorescence spectra of the YADF, we can not only associate PD of the YADF to intrinsic oxygen deficiency centers or Tm3+ impurities but also confirm the impact of the excited Yb3+ ion density on PD. The benefits of the tandem pumping in a high-power Yb fiber laser system will be discussed.
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20
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Zang Y, Song JH, Oh SH, Kim JW, Lee MN, Piao X, Yang JW, Kim OS, Kim TS, Kim SH, Koh JT. Targeting NLRP3 Inflammasome Reduces Age-Related Experimental Alveolar Bone Loss. J Dent Res 2020; 99:1287-1295. [PMID: 32531176 DOI: 10.1177/0022034520933533] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The cause of chronic inflammatory periodontitis, which leads to the destruction of periodontal ligament and alveolar bone, is multifactorial. An increasing number of studies have shown the clinical significance of NLRP3-mediated low-grade inflammation in degenerative disorders, but its causal linkage to age-related periodontitis has not yet been elucidated. In this study, we investigated the involvement of the NLRP3 inflammasome and the therapeutic potential of NLRP3 inhibition in age-related alveolar bone loss by using in vivo and in vitro models. The poor quality of alveolar bones in aged mice was correlated with caspase-1 activation by macrophages and elevated levels of IL-1β, which are mainly regulated by the NLRP3 inflammasome, in periodontal ligament and serum, respectively. Aged mice lacking Nlrp3 showed better bone mass than age-matched wild-type mice via a way that affects bone resorption rather than bone formation. In line with this finding, treatment with MCC950, a potent inhibitor of the NLRP3 inflammasome, significantly suppressed alveolar bone loss with reduced caspase-1 activation in aged mice but not in young mice. In addition, our in vitro studies showed that the addition of IL-1β encourages RANKL-induced osteoclastogenesis from bone marrow-derived macrophages and that treatment with MCC950 significantly suppresses osteoclastic differentiation directly, irrelevant to the inhibition of IL-1β production. Our results suggest that the NLRP3 inflammasome is a critical mediator in age-related alveolar bone loss and that targeting the NLRP3 inflammasome could be a novel option for controlling periodontal degenerative changes with age.
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Affiliation(s)
- Y Zang
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.,Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - J H Song
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.,Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - S H Oh
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.,Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - J W Kim
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.,Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - M N Lee
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.,Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - X Piao
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.,Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - J W Yang
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.,Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - O S Kim
- Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.,Department of Periodontology, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - T S Kim
- Department of Life Sciences, College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea
| | - S H Kim
- Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.,Department of Oral Anatomy, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - J T Koh
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.,Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
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21
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Kim CH, Kim JW. Letter to the editor about the article "Different surgical outcomes in a patient with bilateral atypical femoral fracture related to bisphosphonate use with or without teriparatide treatment". Osteoporos Int 2020; 31:1177. [PMID: 32144475 DOI: 10.1007/s00198-020-05354-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 02/17/2020] [Indexed: 10/24/2022]
Affiliation(s)
- C-H Kim
- Department of Orthopedic Surgery, Gachon University Gil Medical Center, 21, Namdong-daero 774 beon-gil, Namdong-gu, Incheon, 21565, Republic of Korea
| | - J W Kim
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan, College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea.
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22
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Park S, Jeong B, Shin JH, Kim JH, Kim JW, Gwon DI, Ko GY, Chen CS. Interventional treatment of arterial injury during blind central venous catheterisation in the upper thorax: experience from two centres. Clin Radiol 2019; 75:158.e1-158.e7. [PMID: 31711638 DOI: 10.1016/j.crad.2019.10.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 10/03/2019] [Indexed: 12/01/2022]
Abstract
AIM To evaluate the safety and clinical efficacy of interventional treatment for arterial injury during blind, central venous catheterisation in the upper thorax at two tertiary medical centres. MATERIALS AND METHODS Eighteen consecutive patients (37-81 years; M:F=8:10) who underwent interventional treatment for the arterial injuries that occurred during central venous catheterisation without any imaging guidance between November 2007 and December 2018 were included. Clinical data, angiographic findings, detailed interventional procedures, and technical and clinical outcomes were analysed retrospectively. RESULTS Arterial injury sites were the subclavian artery/branches (n=12), axillary artery/branches (n=2), and common carotid artery (n=4). The target vein was not correlated with the corresponding artery/branches in eight patients (44.4%); internal jugular vein to subclavian artery branches. Angiographic findings were pseudoaneurysm (66.7%, 12/18), contrast medium extravasation (22.2%, 4/18), or both (11.1%, n=2). A stent graft was inserted for the main trunk injuries in nine patients, with (n=2) or without (n=7) prior arterial branch embolisation to prevent potential endoleak, while embolisation for the arterial branch injuries was performed in nine patients. Direct percutaneous access with thrombin injection to the pseudoaneurysm or residual arteriovenous fistula was utilised in two. The technical and clinical success rate was 94.4% (17/18) each. There were no procedure-related complications. In one patient without immediate clinical success, there was a persistent pseudoaneurysm after stent graft placement, which was treated with in-stent balloon dilation. CONCLUSION Interventional treatment serves as a safe and effective treatment modality for inadvertent arterial injury related to blind, central venous access catheterisation in the upper thorax.
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Affiliation(s)
- S Park
- Department of Radiology, Gachon University Gil Medical Centre, 21, Namdong-daero 774beon-gil, Namdong-gu, Incheon, South Korea
| | - B Jeong
- Department of Radiology and Research Institute of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, South Korea
| | - J H Shin
- Department of Radiology and Research Institute of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, South Korea.
| | - J H Kim
- Department of Radiology, Gachon University Gil Medical Centre, 21, Namdong-daero 774beon-gil, Namdong-gu, Incheon, South Korea
| | - J W Kim
- Department of Radiology and Research Institute of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, South Korea
| | - D I Gwon
- Department of Radiology and Research Institute of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, South Korea
| | - G-Y Ko
- Department of Radiology and Research Institute of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, South Korea
| | - C S Chen
- Department of Radiology, The Affiliated Cancer Hospital of Zhengzhou University, 1 Jianshe E Rd, Erqi Qu, Zhengzhou Shi, Henan Sheng, PR China
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Kang YK, Ryu MH, Park SH, Kim JG, Kim JW, Cho SH, Park YI, Park SR, Rha SY, Kang MJ, Cho JY, Kang SY, Roh SY, Ryoo BY, Nam BH, Jo YW, Yoon KE, Oh SC. Efficacy and safety findings from DREAM: a phase III study of DHP107 (oral paclitaxel) versus i.v. paclitaxel in patients with advanced gastric cancer after failure of first-line chemotherapy. Ann Oncol 2019; 29:1220-1226. [PMID: 29438463 DOI: 10.1093/annonc/mdy055] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Background Paclitaxel is currently only available as an intravenous (i.v.) formulation. DHP107 is a novel oral formulation of lipid ingredients and paclitaxel. DHP107 demonstrated comparable efficacy, safety, and pharmacokinetics to i.v. paclitaxel as a second-line therapy in patients with advanced gastric cancer (AGC). DREAM is a multicenter, open-label, prospective, randomized phase III study of patients with histologically/cytologically confirmed, unresectable/recurrent AGC after first-line therapy failure. Methods and materials Patients were randomized 1 : 1 to DHP107 (200 mg/m2 orally twice daily days 1, 8, 15 every 4 weeks) or i.v. paclitaxel (175 mg/m2 day 1 every 3 weeks). Patients were stratified by Eastern Cooperative Oncology Group performance status, disease status, and prior treatment; response was assessed (Response Evaluation Criteria in Solid Tumors) every 6 weeks. Primary end point: non-inferiority of progression-free survival (PFS); secondary end points: overall response rate (ORR), overall survival (OS), and safety. For the efficacy analysis, sequential tests for non-inferiority were carried out, first with a non-inferiority margin of 1.48, then with a margin of 1.25. Results Baseline characteristics were balanced in the 236 randomized patients (n = 118 per arm). Median PFS (per-protocol) was 3.0 (95% CI 1.7-4.0) months for DHP107 and 2.6 (95% CI 1.8-2.8) months for paclitaxel (hazard ratio [HR] = 0.85; 95% CI 0.64-1.13). A sensitivity analysis on PFS using independent central review showed similar results (HR = 0.93; 95% CI 0.70-1.24). Median OS (full analysis set) was 9.7 (95% CI 7.1 - 11.5) months for DHP107 versus 8.9 (95% CI 7.1-12.2) months for paclitaxel (HR = 1.04; 95% CI 0.76-1.41). ORR was 17.8% for DHP107 (CR 4.2%; PR 13.6%) versus 25.4% for paclitaxel (CR 3.4%; PR 22.0%). Nausea, vomiting, diarrhea, and mucositis were more common with DHP107; peripheral neuropathy was more common with paclitaxel. There were only few Grade≥3 adverse events, most commonly neutropenia (42% versus 53%); febrile neutropenia was reported infrequently (5.9% versus 2.5%). No hypersensitivity reactions occurred with DHP107 (paclitaxel 2.5%). Conclusions DHP107 as a second-line treatment of AGC was non-inferior to paclitaxel for PFS; other efficacy and safety parameters were comparable. DHP107 is the first oral paclitaxel with proven efficacy/safety for the treatment of AGC. ClinicalTrials.gov NCT01839773.
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Affiliation(s)
- Y-K Kang
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul.
| | - M-H Ryu
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul
| | - S H Park
- Department of Hematology-Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul
| | - J G Kim
- Department of Oncology-Hematology, Kyungpook National University Hospital, Kyungpook National University School of Medicine, Daegu
| | - J W Kim
- Department of Hematology-Oncology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Bundang
| | - S-H Cho
- Department of Oncology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun
| | - Y-I Park
- Department of Hematology-Oncology, Center for Gastric Cancer, National Cancer Center, Goyang
| | - S R Park
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul
| | - S Y Rha
- Department of Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul
| | - M J Kang
- Department of Hematology-Oncology, Haeundai Paik Hospital, University of Inje College of Medicine, Busan
| | - J Y Cho
- Department of Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul
| | - S Y Kang
- Department of Hematology-Oncology, Ajou University School of Medicine, Ajou University Hospital, Suwon
| | - S Y Roh
- Department of Oncology, Seoul St. Mary's Hospital, Catholic University of Korea, Seoul
| | - B-Y Ryoo
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul
| | - B-H Nam
- Biometric Research Branch, National Cancer Center, Goyang
| | - Y-W Jo
- Clinical Trials Department, DAEHWA Pharmaceutical Company Co., Ltd, Seoul
| | - K-E Yoon
- Clinical Trials Department, DAEHWA Pharmaceutical Company Co., Ltd, Seoul
| | - S C Oh
- Department of Oncology, Korea University Guro Hospital, Korea University College of Medicine, Seoul, South Korea
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24
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Choi CU, Choi JI, Kim W, Jang WY, Kang DO, Park Y, Na JO, Kim EJ, Rha SW, Park CG, Seo HS, Kim JW. P2523Hand grip strength as a predictor of exercise capacity in coronary heart disease. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0852] [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
A recent study has shown that quadriceps strength can be used to predict the level of exercise capacity in patients with coronary heart disease (CHD). We investigated whether the relationship between muscular strength and exercise capacity is also observed with hand grip strength (HGS). We studied 443 participants (age, 61.8±11.2 y; 77.7% male) who underwent coronary intervention and participated in cardiac rehabilitation between 2015 and 2018. Participants were assessed for grip strength, measured using a Jamar dynamometer. Logistic regression was used to assess the relationship between various clinical measures (HGS, age, sex, etc) with the distance walked on a 6-minute walk test (6MWT) and maximal oxygen uptake (VO2max). HGS was significantly related to distance walked on the 6MWT (r=0.435, p<0.001). It was the only predictor of all exercise capacity categories, and one of the strongest predictors of each exercise capacity category. A HGS of 25.5% of body weight predicted an achievement of a 200 m walk on the 6MWT (positive predictive value = 0.95). However, HGS less than 35.5% of body weight predicted that 500m could not be done in 6 minutes (negative predictive value = 0.97). This trend was also observed in the subgroups in which VO2max was measured. This study demonstrates that HGS is associated with exercise capacity in CHD and can be used to predict the level of exercise capacity. These findings may contribute to setting the recommended level of daily activity as well as the level of cardiac rehabilitation in CHD.
Logistic regression models for different levels of exercise capacity Level of exercise capacity B±S.E p-value Odd ratio 95% CI Distance of 6MWT 200 m Grip strength 0.054±0.014 <0.001 1.056 1.027–1.086 300 m Grip strength 0.042±0.009 <0.001 1.042 1.024–1.062 400 m Grip strength 0.047±0.011 <0.001 1.048 1.026–1.070 500 m Grip strength 0.051±0.016 0.001 1.053 1.021–1.086 VO2max level 4 METs Grip strength 0.054±0.010 <0.001 1.056 1.036–1.076 6 METs Grip strength 0.059±0.011 <0.001 1.061 1.039–1.083 8 METs Grip strength 0.081±0.015 <0.001 1.085 1.053–1.117 10 METs Grip strength 0.113±0.049 0.019 1.12 1.019–3.232 Data are presented as mean ± standard deviation (SD). 6MWT, 6-minute walk test; STEMI, ST-Elevation Myocardial Infarction; SE, standard error; CI, confidence interval; VO2max, Maximal Oxygen uptake; METs, Metabolic equivalents.
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Affiliation(s)
- C U Choi
- Korea University Guro Hospital, Cardiology, Seoul, Korea (Republic of)
| | - J I Choi
- Korea University Anam Hospital, Seoul, Korea (Republic of)
| | - W Kim
- Korea University Guro Hospital, Cardiology, Seoul, Korea (Republic of)
| | - W Y Jang
- Korea University Guro Hospital, Cardiology, Seoul, Korea (Republic of)
| | - D O Kang
- Korea University Guro Hospital, Cardiology, Seoul, Korea (Republic of)
| | - Y Park
- Korea University Guro Hospital, Cardiology, Seoul, Korea (Republic of)
| | - J O Na
- Korea University Guro Hospital, Cardiology, Seoul, Korea (Republic of)
| | - E J Kim
- Korea University Guro Hospital, Cardiology, Seoul, Korea (Republic of)
| | - S W Rha
- Korea University Guro Hospital, Cardiology, Seoul, Korea (Republic of)
| | - C G Park
- Korea University Guro Hospital, Cardiology, Seoul, Korea (Republic of)
| | - H S Seo
- Korea University Guro Hospital, Cardiology, Seoul, Korea (Republic of)
| | - J W Kim
- Korea University Guro Hospital, Cardiology, Seoul, Korea (Republic of)
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25
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Jeong DE, Kim JW, Kim BM, Hwang W, Kim DJ. Impact of Balloon-Guiding Catheter Location on Recanalization in Patients with Acute Stroke Treated by Mechanical Thrombectomy. AJNR Am J Neuroradiol 2019; 40:840-844. [PMID: 30948374 DOI: 10.3174/ajnr.a6031] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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: 12/28/2018] [Accepted: 03/07/2019] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Mechanical thrombectomy with proximal flow control and forced aspiration may improve the outcome of endovascular revascularization therapy for patients with acute stroke. The purpose of this study was to compare the impact of balloon-guiding catheter locations in patients treated for anterior circulation acute ischemic stroke using mechanical thrombectomy. MATERIALS AND METHODS The influence of the balloon-guiding catheter location (proximal, balloon-guiding catheter tip proximal to C1 vertebral body; distal, between the skull base and the C1 vertebral body) was analyzed in patients with acute anterior circulation stroke treated with stent-retriever thrombectomy. The baseline angiographic/clinical characteristics, time intervals, recanalization rates, and clinical outcomes were compared. RESULTS The clinical analysis included 102 patients (mean age, 69.5 ± 12.8 years; male/female ratio = 52:50). The balloon-guiding catheter was located distally in 49 patients and proximally in 53 patients for flow control and forced aspiration during stent retrieval. The puncture-to-recanalization time was shorter in the distal group than in the proximal group (40 versus 56 minutes, P = .02). Successful and complete recanalizations were more frequently achieved in the distal group compared with the proximal group (98.0% versus 75.5%. P = .003; 67.3% versus 45.3%, P = .04, respectively). Multivariate analysis showed that the distal catheterization location was independently associated with successful recanalization (adjusted OR, 13.4; 95% CI, 2.4-254.8; P = .02). CONCLUSIONS Location of the balloon-guiding catheter has a significant impact on recanalization in patients with acute stroke. The balloon-guiding catheter should be positioned as distally as safely possible in the cervical ICA for maximally effective thrombectomy.
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Affiliation(s)
- D E Jeong
- From the Department of Radiology (D.E.J., J.W.K., B.M.K., D.J.K.), Yonsei University College of Medicine, Severance Hospital, Seoul, South Korea
- Department of Neurology (D.E.J.), YeongNam University College of Medicine, Daegu, South Korea
| | - J W Kim
- From the Department of Radiology (D.E.J., J.W.K., B.M.K., D.J.K.), Yonsei University College of Medicine, Severance Hospital, Seoul, South Korea
| | - B M Kim
- From the Department of Radiology (D.E.J., J.W.K., B.M.K., D.J.K.), Yonsei University College of Medicine, Severance Hospital, Seoul, South Korea
| | - W Hwang
- Department of Mechanical and Aerospace Engineering (W.H.), Seoul National University, Seoul, South Korea
| | - D J Kim
- From the Department of Radiology (D.E.J., J.W.K., B.M.K., D.J.K.), Yonsei University College of Medicine, Severance Hospital, Seoul, South Korea
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Kim JW, Sanjayan N, Leterme P, Nyachoti CM. Relative bioavailability of phosphorus in high-protein sunflower meal for broiler chickens and effects of dietary phytase supplementation on bone traits, growth performance, and apparent ileal digestibility of nutrients. Poult Sci 2019; 98:298-305. [PMID: 30107506 DOI: 10.3382/ps/pey346] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 07/14/2018] [Indexed: 11/20/2022] Open
Abstract
An experiment was conducted to determine the relative bioavailability (RBV) of P in high-protein sunflower meal (HP-SFM) fed to broiler chickens based on bone traits and to determine the effects of dietary phytase supplementation and increasing levels of HP-SFM as a P source on bone traits, growth performance, and apparent ileal digestibility (AID) of DM and nutrients. In total, 240 broiler chicks were randomly allotted to 1 of 10 experimental diets with 6 replicate cages of 4 birds each and fed experimental diets from day 14 to 21 of age. Diets included a corn-soybean meal-based basal diet (0.35% total P; P-deficient diet), or the basal diet supplemented with 0.05, 0.10, or 0.15% P from either monosodium phosphate (MSP) or HP-SFM. Another 3 diets were formulated by supplementing the HP-SFM-containing diets with 500 phytase unit/kg of phytase. The bone mineral content (BMC), bone area (BA), and bone mineral density (BMD) of femur and tibia and tibia ash content increased (linear, P < 0.01) with increasing dietary P content from MSP. A linear increase in femur and tibia BMC, femur BA, and tibia BMD was also observed (P < 0.01) with increasing level of dietary P from HP-SFM. The RBV of P in HP-SFM based on femur and tibia BMC were 41 and 44%, respectively. Dietary phytase supplementation increased (P < 0.01) most of bone traits of the birds except for femur BMD. In addition, birds fed the diets supplemented with dietary phytase had greater (P < 0.05) BW gain, feed efficiency, and AID of P than those fed the diets without dietary phytase. In conclusion, the estimated RBV of P in HP-SFM to P in MSP were 41 and 44% based on femur and tibia BMC, respectively. Also, dietary phytase supplementation increased AID of P, growth performance, and bone traits of the birds fed P-deficient diets containing increasing inclusion level of HP-SFM as a P source.
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Affiliation(s)
- J W Kim
- Department of Animal Science, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - N Sanjayan
- Department of Animal Science, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - P Leterme
- BUNGE Global Innovation, calle Constitución 1, 08960 St Just Desvern (BCN), Spain
| | - C M Nyachoti
- Department of Animal Science, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
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27
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Kim JW, Jung HY, Won DY, Shin YS, Noh JH, Kang TI. Landscape of Elderly Suicide in South Korea: Its Trend According to Age, Gender, and Educational Attainment. Omega (Westport) 2018; 82:214-229. [PMID: 30360680 DOI: 10.1177/0030222818807845] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
South Korea has one of the highest suicide rates in the world, and the most alarming suicide rate is among its elders. This study aims to understand the social, historical, and cultural context of the Korean older adults and examine suicide trends based on that understanding. The results show that the suicide risk increases with age, the male suicide rate outweighs that of females, and the suicide rate decreases with educational attainment. In addition, several suggestions for reducing elderly suicide rate are addressed, including differentiating the existing social services for elders by age and expanding suicide prevention programs beyond schools to communities so that all people in need can access them.
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Affiliation(s)
- J W Kim
- Department of Social Welfare, Sungkyunkwan University, Seoul, Republic of Korea
| | - H Y Jung
- Department of Social Welfare, Sungkyunkwan University, Seoul, Republic of Korea.,Research Institute of Social Welfare, Sungkyunkwan University, Seoul, Republic of Korea
| | - D Y Won
- Department of Social Welfare, Sungkyunkwan University, Seoul, Republic of Korea
| | - Y S Shin
- Research Institute of Social Welfare, Sungkyunkwan University, Seoul, Republic of Korea
| | - J H Noh
- Department of Social Welfare, Sungkyunkwan University, Seoul, Republic of Korea.,Baekseok University, Cheonan, Republic of Korea
| | - T I Kang
- Department of Social Welfare, Daelim University, Anyang, Republic of Korea.,Choong Hyun Community Welfare Center, Seoul, Republic of Korea
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28
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Park EJ, Eo JS, Jang WY, Na JO, Choi CU, Kim EJ, Rha SW, Park CG, Seo HS, Kim JW. P1689Association of brain amygdalar activity with plaque burden and vulnerability in coronary artery. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1689] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- E J Park
- Korea University Guro Hospital, Caradiovascular Center, Seoul, Korea Republic of
| | - J S Eo
- Korea University Guro Hospital, Department of Nuclear Medicine, Seoul, Korea Republic of
| | - W Y Jang
- Korea University Guro Hospital, Caradiovascular Center, Seoul, Korea Republic of
| | - J O Na
- Korea University Guro Hospital, Caradiovascular Center, Seoul, Korea Republic of
| | - C U Choi
- Korea University Guro Hospital, Caradiovascular Center, Seoul, Korea Republic of
| | - E J Kim
- Korea University Guro Hospital, Caradiovascular Center, Seoul, Korea Republic of
| | - S W Rha
- Korea University Guro Hospital, Caradiovascular Center, Seoul, Korea Republic of
| | - C G Park
- Korea University Guro Hospital, Caradiovascular Center, Seoul, Korea Republic of
| | - H S Seo
- Korea University Guro Hospital, Caradiovascular Center, Seoul, Korea Republic of
| | - J W Kim
- Korea University Guro Hospital, Caradiovascular Center, Seoul, Korea Republic of
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29
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Park EJ, Kim WH, Choi JY, Jang WY, Na JO, Choi JI, Kim JW, Kim EJ, Rha SW, Park CG, Seo HS, Choi CU. P2690The bleeding and cardiovascular risk according to NSAIDs selectivity in patients receiving antithrombotics and concomitant NSAIDs after myocardial infarction: a nationwide cohort study. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- E J Park
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - W H Kim
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - J Y Choi
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - W Y Jang
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - J O Na
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - J I Choi
- Korea University Anam Hospital, Seoul, Korea Republic of
| | - J W Kim
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - E J Kim
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - S W Rha
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - C G Park
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - H S Seo
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - C U Choi
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
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Lee CS, Baek HS, Bae IH, Choi SJ, Kim YJ, Lee JH, Kim JW. Depigmentation efficacy of galacturonic acid through tyrosinase regulation in B16 murine melanoma cells and a three-dimensional human skin equivalent. Clin Exp Dermatol 2018; 43:708-712. [PMID: 29744907 DOI: 10.1111/ced.13557] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/04/2017] [Indexed: 12/14/2022]
Abstract
Sugar is a well-known cosmetic ingredient for moisturizing skin with minimal side-effects. Several reports have demonstrated an antimelanogenic effect of sugar in melanocytes. We evaluated the whitening efficacy of galacturonic acid (GA), the main component of pectin, as an anti-melanogenic agent. GA significantly suppressed melanin synthesis and secretion in a concentration-dependent manner in α-melanocyte stimulating hormone-treated B16 melanoma cells, and inhibited tyrosinase activity and expression at a dose of 10 mmol/L. In a three-dimensional human skin equivalent (MelanoDerm), GA clearly brightened tissue colour. Haematoxylin and eosin and Fontana-Masson (F&M) staining of tissue sections revealed decreased melanin production without skin tissue collapse in the presence of GA. Interestingly, GA dramatically suppressed gene expression of the melanogenic proteins tyrosinase, tyrosinase-related protein (TYRP)-1 and microphthalmia-associated transcription factor, but not TYRP-2. The results support the utility of GA as an effective candidate antimelanogenic agent.
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Affiliation(s)
- C S Lee
- Amorepacific Corporation R&D Center, Yongin-si, Korea.,Department of Beauty and Cosmetic Science, College of Health Science, Eulji University, Seongnam-si, Korea
| | - H S Baek
- Amorepacific Corporation R&D Center, Yongin-si, Korea.,Department of Applied Chemistry, Hanyang University, Ansan-si, Korea.,Department of Bionano Technology, Hanyang University, Ansan-si, Korea
| | - I-H Bae
- Amorepacific Corporation R&D Center, Yongin-si, Korea
| | - S J Choi
- Amorepacific Corporation R&D Center, Yongin-si, Korea
| | - Y J Kim
- Amorepacific Corporation R&D Center, Yongin-si, Korea
| | - J H Lee
- Amorepacific Corporation R&D Center, Yongin-si, Korea
| | - J W Kim
- Department of Applied Chemistry, Hanyang University, Ansan-si, Korea.,Department of Bionano Technology, Hanyang University, Ansan-si, Korea
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Kim JW, Koo B, Kim IH, Nyachoti CM. Effects of extrusion and microbial phytase on the apparent and standardized total tract digestibility of phosphorus in hemp hulls fed to growing pigs. J Anim Sci 2018; 96:1838-1845. [PMID: 29538763 PMCID: PMC6140985 DOI: 10.1093/jas/sky097] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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: 10/31/2017] [Accepted: 03/08/2018] [Indexed: 11/12/2022] Open
Abstract
An experiment was carried out to determine the apparent total tract digestibility (ATTD) and the standardized total tract digestibility (STTD) of P and the effects of extrusion and microbial phytase on ATTD and STTD of P in hemp hulls (HH). Thirty-six pigs (30.3 ± 2.7 kg) were randomly allotted to 1 of 6 experimental diets in a complete randomized design with 6 replicates per diet. A corn-soybean meal (SBM)-based basal diet was formulated. Two additional diets were formulated by replacing 40% of corn and SBM (on a 100% of total diet basis) with HH or extruded HH (EHH). The test ingredients, corn, and SBM were the only sources of P in the diets. Three additional diets were also prepared by supplementing 500 unit/kg of microbial phytase to the initial 3 diets (the corn-SBM basal diet and diets containing test ingredients). Pigs were fed experimental diets at 3 times the maintenance energy requirement (197 kcal ME/kg BW0.60). Results indicated that fecal P concentration and daily P output were reduced (P < 0.05) from pigs fed diets with dietary phytase compared with pigs fed diets without dietary phytase. The ATTD and STTD of P in experimental diets were not different. However, the ATTD and STTD of P in experimental diets supplemented with dietary phytase were increased (P < 0.05) compared with the diets without phytase. The ATTD and STTD of P in HH were 18.8% and 22.0%, respectively, whereas respective values for EHH were 22.5% and 26.3%. Extrusion had no effects on ATTD and STTD of P in HH. However, the ATTD and STTD of P in HH and EHH increased (P < 0.05) when dietary phytase was added to the diets. The concentration of Ca in feces and daily Ca output were reduced (P < 0.05) as a result of phytase supplementation. Addition of dietary phytase increased (P < 0.05) the ATTD of Ca in all experimental diets. In conclusion, the ATTD and STTD of P in HH fed to growing pigs were 18.8% and 22.0%, respectively. Respective values for EHH were 22.5% and 26.3%. Extrusion did not affect the ATTD and STTD of P in HH. However, the addition of microbial phytase to experimental diets increased the ATTD and STTD of P in diets and test ingredients and decreased fecal P output from pigs fed experimental diets. There was no interaction between extrusion and dietary phytase supplementation.
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Affiliation(s)
- J W Kim
- Department of Animal Science, University of Manitoba, Winnipeg, MB, Canada
| | - B Koo
- Department of Animal Science, University of Manitoba, Winnipeg, MB, Canada
| | - I H Kim
- Department of Animal Resource and Science, Dankook University, Cheonan, Chungnam, South Korea
| | - C M Nyachoti
- Department of Animal Science, University of Manitoba, Winnipeg, MB, Canada
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Bookman MA, Okamoto A, Stuart G, Yanaihara N, Aoki D, Bacon M, Fujiwara K, González-Martín A, Harter P, Kim JW, Ledermann J, Pujade-Lauraine E, Quinn M, Ochiai K. Harmonising clinical trials within the Gynecologic Cancer InterGroup: consensus and unmet needs from the Fifth Ovarian Cancer Consensus Conference. Ann Oncol 2018; 28:viii30-viii35. [PMID: 29232472 DOI: 10.1093/annonc/mdx449] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The Gynecologic Cancer InterGroup (GCIG) Fifth Ovarian Cancer Consensus Conference (OCCC) was held in Tokyo, Japan from 7 to 9 November 2015. It provided international consensus on 15 important questions in 4 topic areas, which were generated in accordance with the mission statement to establish 'International Consensus for Designing Better Clinical Trials'. The methodology for obtaining consensus was previously established and followed during the Fifth OCCC. All 29 clinical trial groups of GCIG participated in program development and deliberations. Draft consensus statements were discussed in topic groups as well as in a plenary forum. The final statements were then presented to all 29 member groups for voting and documentation of the level of consensus. Full consensus was obtained for 11 of the 15 statements with 28/29 groups agreeing to 3 statements, and 27/29 groups agreeing to 1 statement. The high acceptance rate of the statements among trial groups reflects the fact that we share common questions, and recognise important unmet needs that will guide future research in ovarian cancer.
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Lee YK, Kim JW, Kim TY, Ha YC, Koo KH. Validity of the intra-operative measurement of stem anteversion and factors for the erroneous estimation in cementless total hip arthroplasty using postero-lateral approach. Orthop Traumatol Surg Res 2018; 104:341-346. [PMID: 29458202 DOI: 10.1016/j.otsr.2017.11.023] [Citation(s) in RCA: 10] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 11/07/2017] [Accepted: 11/23/2017] [Indexed: 02/02/2023]
Abstract
BACKGROUND Intra-operative estimation of stem anteversion in total hip arthroplasty (THA) using postero-lateral approach is made by the surgeon's visual assessment, using the tibia as a guide, with the assumption that tibial axis is vertical to the trans-epicondylar axis. However, the accuracy of the intra-operative estimation has rarely been verified with postoperative CT-scans, with controversies regarding these measurements particularly in case of knee osteoarthritis. Therefore we performed a prospective study to: (1) determine the accuracy of the intra-operative measurement and (2) investigate factors affecting the discrepancy between the surgeon's estimation and the real stem anteversion. HYPOTHESIS Intra-operative estimation of stem anteversion correlated with the real stem anteversion on CT-scan. PATIENTS AND METHODS Sixty-seven THAs using cementless straight stems (65 patients) without ipsilateral total knee arthroplasty were prospectively evaluated to compare the intra-operative measurement of stem anteversion with the real stem anteversion on computed tomography (CT) scans. There were 33 men and 34 women with a mean age of 59.7years (range, 27-84years) at the time of surgery. Age, tibia plateau angle, native femoral anteversion, femoro-tibial angle, body mass index, operative site, gender, coronal and sagittal tilt of the stem, stem type, ipsilateral knee osteoarthritis, and preoperative diagnosis were analyzed to evaluate the factors affecting the discrepancy between the intra-operative and CT measurements. RESULTS The intra-operative estimation (mean, 21.5°±8.5°; range, 5.0°-39.0°) was greater than the CT measurement (mean, 19.5°±8.7°; range, 4.5°-38.5°) by 2.0°. The mean absolute value of discrepancy was 4.5°. The correlation coefficient between intra-operative and CT measurements was 0.837. The femoro-tibial angle was associated with the discrepancy between the two measurements. In the presence of genu varum deformity, the intra-operative measurement underestimated the stem anteversion. DISCUSSION Although intra-operative estimation of stem anteversion was slightly greater than the real stem anteversion, there was an excellent correlation between the two. The femoro-tibial angle should be considered to optimize the stem anteversion during cementless THA using postero-lateral approach. LEVEL OF EVIDENCE Level III, prospective case control study.
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Affiliation(s)
- Y K Lee
- Seoul National University Bundang Hospital, Department of Orthopaedic Surgery, 166 Gumi-ro, Bundang-gu, Seongnam 463-707 South Korea
| | - J W Kim
- Seoul National University Bundang Hospital, Department of Orthopaedic Surgery, 166 Gumi-ro, Bundang-gu, Seongnam 463-707 South Korea
| | - T Y Kim
- Hallym University Sacred Heart Hospital, Department of Orthopaedic Surgery, 896 Pyeongchon-dong, Dongan-gu, Anyang 431-070, South Korea; Konkuk University Medical Center, Department of Orthopaedic Surgery, School of Medicine, Konkuk University, Seoul 05030, South Korea.
| | - Y C Ha
- Chung-Ang University, College of Medicine, Department of Orthopaedic Surgery, 224-1 Heukseok-dong, Dongjak-gu, Seoul 156-755, South Korea
| | - K H Koo
- Seoul National University Bundang Hospital, Department of Orthopaedic Surgery, 166 Gumi-ro, Bundang-gu, Seongnam 463-707 South Korea
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Kim JW, Koo B, Nyachoti CM. Net energy content of canola meal fed to growing pigs and effect of experimental methodology on energy values. J Anim Sci 2018; 96:1441-1452. [PMID: 29529226 PMCID: PMC6140956 DOI: 10.1093/jas/sky039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 10/31/2017] [Accepted: 02/19/2018] [Indexed: 11/13/2022] Open
Abstract
An experiment was conducted to determine the digestible energy (DE), metabolizable energy (ME), and net energy (NE) contents of canola meal (CM) and to investigate the effects of basal diet [corn diet vs. corn-soybean meal (SBM) diet] and methodology (difference method vs. regression method) on energy values of CM. Thirty-six growing barrows (20.8 ± 1.0 kg initial body weight [BW]) were individually housed in metabolism crates and randomly allotted to one of six dietary treatments to give six replicates per treatment. The six experimental diets included a corn diet, a corn-SBM diet, a corn diet with 15 or 30% of CM, and a corn-SBM diet with 15 or 30% of CM. The DE, ME, and NE of CM were determined using the corn diet or the corn-SBM diet as a basal diet. In each basal diet, two additional diets containing 15 or 30% of CM were formulated to compare the determined energy values by the difference method and estimated energy values from the regression method. Feeding level was set at 550 kcal ME/kg BW0.6 per day. Pigs were fed experimental diets for 16 d including 10 d for adaptation and 6 d for total collection of feces and urine. Pigs were then moved into indirect calorimetry chambers to determine 24 h heat production (HP) and 12 h fasting HP. The DE, ME, and NE of CM determined by the difference method were within the 95% confidence intervals estimated for the DE, ME, and NE of CM by the regression method regardless of the basal diets used, which indicates that the difference and regression methods give equivalent DE, ME, and NE of CM. However, when the goodness of fit for the linear model was compared, the r2 of the regression analysis from the corn-SBM diet (0.78) was relatively greater than that from corn diet (0.40). The estimated NE of CM by the prediction equations generated by either the corn diet or corn-SBM diets were 2,096 kcal/kg and 1,960 kcal/kg (as-fed basis), respectively, whereas those values determined by the difference method were 2,233 kcal/kg and 2,106 kcal/kg (as-fed basis), respectively. In conclusion, the NE of CM determined in the current study was, on average, 2,099 kcal/kg (as-fed basis). The difference and regression methods do not give different NE value of CM fed to growing pigs. Although the NE values of CM determined using either the corn diet or the corn-SBM diet were not different, the greater r2 of the regression analysis from the corn-SBM diet than that from the corn diet suggests that the corn-SBM diet is a more appropriate basal diet for NE determination of ingredients.
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Affiliation(s)
- J W Kim
- Department of Animal Science, University of Manitoba, Winnipeg, MB, Canada
| | - B Koo
- Department of Animal Science, University of Manitoba, Winnipeg, MB, Canada
| | - C M Nyachoti
- Department of Animal Science, University of Manitoba, Winnipeg, MB, Canada
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Kim JW, Nyachoti CM. 278 Effects of Extrusion and Microbial Phytase on the Apparent and Standardized Total Tract Digestibility of Phosphorus in Hemp Hulls Fed to Growing Pigs. J Anim Sci 2018. [DOI: 10.1093/jas/sky073.275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- J W Kim
- University of Manitoba, Winnipeg, MB, Canada
| | - C M Nyachoti
- Department of Animal Science, University of Manitoba, Winnipeg, MB, Canada
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Choi W, Shin JH, Kim PH, Han K, Ohm JY, Kim JH, Kim JW. Clinical outcomes of 23 patients who had repeat pelvic arterial embolisation for uncontrolled post-partum haemorrhage at a single centre. Clin Radiol 2018; 73:665-671. [PMID: 29622362 DOI: 10.1016/j.crad.2018.02.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 02/13/2018] [Indexed: 01/23/2023]
Abstract
AIM To evaluate the safety and efficacy of repeated pelvic arterial embolisation (PAE) for uncontrolled postpartum haemorrhage (PPH) after a single session of PAE and to compare angiographic findings between the two sessions of PAE. MATERIALS AND METHODS A total of 23 consecutive patients (age range, 23-44 years) who underwent repeated PAE for uncontrolled PPH between March 2001 and January 2016 in Severance Hospital were reviewed. The interval times between the two sessions of PAE, the angiographic findings, embolic materials, arteries embolised during PAE, and the clinical outcomes were reviewed retrospectively. RESULTS Overall clinical success was achieved after repeated PAE in 21 of 23 patients (91.3%). There were no procedure-related, major complications. On angiography, active bleeding from the uterine collateral arteries was more frequently observed in the second session of PAE (p>0.05), and embolisation of the anterior division of the internal iliac artery was significantly higher during the second session of PAE. Use of permanent embolic materials was significantly higher during the second session of PAE. Recanalisation of a previously embolised artery was identified in 14 patients (60.9%) during the second session. CONCLUSION Repeated PAE is safe and effective for managing recurrent bleeding after a single session of PAE. Repeated PAE is related to a higher chance of embolisation of the anterior division of the internal iliac artery, with the use of permanent embolic materials. Recanalisation of a previously embolised artery seems to be a principal source of rebleeding during a repeated session of PAE.
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Affiliation(s)
- W Choi
- Department of Radiology, Severance Hospital, Research Institute of Radiological Science, Yonsei University, College of Medicine, 50-1, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - J H Shin
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 138-736, Republic of Korea.
| | - P H Kim
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 138-736, Republic of Korea
| | - K Han
- Department of Radiology, Severance Hospital, Research Institute of Radiological Science, Yonsei University, College of Medicine, 50-1, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - J Y Ohm
- Department of Radiology, Chungnam National University Hospital, 282, Munhwa-ro, Jung-gu, Daejeon, 35015, Republic of Korea
| | - J H Kim
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 138-736, Republic of Korea
| | - J W Kim
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 138-736, Republic of Korea
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Kim YM, Ha AN, Kim JW, Kim SJ. Double-blind Randomized Study to Evaluate the Safety and Efficacy of Over-the-counter Tooth-whitening Agents Containing 2.9% Hydrogen Peroxide. Oper Dent 2018. [PMID: 29513635 DOI: 10.2341/16-379-c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVES In this double-blind randomized study, we evaluated the safety and efficacy of over-the-counter (OTC) bleaching products that included 2.9% hydrogen peroxide (H2O2) with two methods of application: strip and paint-on. METHODS AND MATERIALS A commonly used product was selected for each type (strip and paint-on) of OTC bleaching agent. In total, 75 volunteers were assigned randomly into five groups: two test groups (strip and paint-on), two negative control groups (products without H2O2), and one positive control group (dentist-supervised home bleaching). The tooth shade was evaluated with a spectrophotometer and Vita shade guide at baseline and 2 weeks and 4 weeks after use. To document any adverse reactions, such as hypersensitivity or tissue irritation, all patients were examined and the Gingival Index (GI), Plaque Index (PI), and a visual analog scale (VAS) measuring the cold response were obtained. RESULTS There were significant differences among the five groups ( p<0.001). The positive control showed the greatest color changes; then, in decreasing order, the strip-type test group, paint-on-type test group, and negative controls. The strip-type bleaching agent was significantly more effective than the paint-on-type agent and the negative control, while it was significantly less effective than the dentist-supervised home bleaching. Regardless of the treatment group, the canines showed greater color changes than did the central or lateral incisors. Some cases of gingival irritation and hypersensitivity were observed, but they were mild and reversible. GI, PI, and VAS scores were not significantly changed. CONCLUSIONS Within the limitations of this study, the results indicated that the strip-type and paint-on-type OTC bleaching agents were significantly less efficacious than was dentist-supervised home bleaching; however, they showed acceptable safety and efficacy. The strip-type was more effective than was the paint-on-type in this study.
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Choi JY, Cho EY, Lee JW, Kim JW, Choi YJ, You JY, Bae SY, Jung SP, Cho KR, Park KH. Abstract P6-08-09: Incidence and risk factors for congestive heart failure in early breast cancer received anthracycline and/or trastuzumab; big-data analysis of Korean health insurance review and assessment service database. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p6-08-09] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Anthracycline (AC) and/or trastuzumab (T) are the most commonly used for neo-/adjuvant therapy for early breast cancer. However, use of those regimens are limited owing to congestive heart failure (CHF). Although reported incidence from pivotal trials is very low and acceptable, no big data-based population study has not been conducted in Koreans yet. The aim of this study was to analyze the incidence, time to occurrence, and risk factors for CHF in patients with early breast cancer, who were treated with AC and/or T therapy, in Korea.
Methods: We used the Health Insurance Review and Assessment Service database and included women with no prior history of CHF who were aged >19 years and diagnosed as having early breast cancer between 2007 and 2016. Only patients who had received breast cancer surgery and AC and/or T therapy were included. Patients with metastatic cancer codes were excluded.
Result: In total, 86,086 patients were included for this analysis. The incidence and median time to occurrence of CHF according to chemotherapy type were, 3.27% and 683.5 days in the AC only group, 6.39% and 374 days in the AC followed by T group, and 4.43% and 286 days in the T with or without non-AC group, respectively.
The multivariate Cox regression analysis revealed that the adjusted hazard ratio (HR) for CHF was increased with older age; in those aged ≥65 years versus <50 years (HR, 2.79; 95% confidence interval [CI], 2.50–3.12). The HR in the AC followed by T group was significantly higher than that in the AC only group (HR, 2.21; 95% CI, 2.05-2.37). The T with or without non-AC group also showed a significantly higher HR than the AC only group (HR, 1.67; 95% CI, 1.37-2.04). CCI scores of ≥2 were significant predictors of CHF; score 2 versus 0 (HR, 1.30; 95% CI, 1.18-1.45), and score ≥3 versus 0 (HR, 1.87; 95% CI, 1.69-2.06). In addition, preexisting medical conditions were significant predictors for CHF: hypertension (HR, 1.58; 95% CI, 1.45-1.72), diabetes (HR, 1.17; 95% CI, 1.07-1.28), and ischemic heart disease (HR, 1.60; 95% CI, 1.45-1.76).
Conclusion: This is the first big data-based population study in Korea on the development of CHF after treatment with AC and/or T. The overall incidence of CHF was 3% to 6%, with a median time to occurrence of 1 to 2 years. Adjusted HR increased with older age, AC followed by T therapy, CCI scores ≥2, and preexisting conditions.
Table 1. Incidence and median time to occurrence of congestive heart failure according to chemotherapy typeChemotherapy typeTotalCHF event (%)Median time to occurenceAC only66,6992,182 (3.27%)683.5AC followed by T17,0621,090 (6.39%)374T ± non-AC2,325103 (4.43%)286
Table 2. Cox proportional hazards model for congestive heart failure, adjusted for age, chemotherapy type, and Charlson comorbidity index scoreVariableP-valueHR95% CIAge (ref <50 years) 50-64 years<0.00011.541.43-1.66≥65 years<0.00012.792.50-3.12Chemotherapy type (ref AC only) AC folloewed by T<0.00012.212.05-2.37T ± non-AC<0.00011.671.37-2.04Charlson comorbidity index score (ref 0) 10.12061.080.98-1.192<0.00011.301.18-1.45≥3<0.00011.871.69-2.06
Citation Format: Choi JY, Cho EY, Lee JW, Kim JW, Choi YJ, You JY, Bae SY, Jung SP, Cho KR, Park KH. Incidence and risk factors for congestive heart failure in early breast cancer received anthracycline and/or trastuzumab; big-data analysis of Korean health insurance review and assessment service database [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P6-08-09.
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Affiliation(s)
- JY Choi
- Anam Hospital, Korea University College of Medicine, Seoul, Korea
| | - EY Cho
- Anam Hospital, Korea University College of Medicine, Seoul, Korea
| | - JW Lee
- Anam Hospital, Korea University College of Medicine, Seoul, Korea
| | - JW Kim
- Anam Hospital, Korea University College of Medicine, Seoul, Korea
| | - YJ Choi
- Anam Hospital, Korea University College of Medicine, Seoul, Korea
| | - JY You
- Anam Hospital, Korea University College of Medicine, Seoul, Korea
| | - SY Bae
- Anam Hospital, Korea University College of Medicine, Seoul, Korea
| | - SP Jung
- Anam Hospital, Korea University College of Medicine, Seoul, Korea
| | - KR Cho
- Anam Hospital, Korea University College of Medicine, Seoul, Korea
| | - KH Park
- Anam Hospital, Korea University College of Medicine, Seoul, Korea
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Stock C, Rodriguez EE, Lee N, Demmel F, Fouquet P, Laver M, Niedermayer C, Su Y, Nemkovski K, Green MA, Rodriguez-Rivera JA, Kim JW, Zhang L, Cheong SW. Orphan Spins in the S=5/2 Antiferromagnet CaFe_{2}O_{4}. Phys Rev Lett 2017; 119:257204. [PMID: 29303328 DOI: 10.1103/physrevlett.119.257204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Indexed: 06/07/2023]
Abstract
CaFe_{2}O_{4} is an anisotropic S=5/2 antiferromagnet with two competing A (↑↑↓↓) and B (↑↓↑↓) magnetic order parameters separated by static antiphase boundaries at low temperatures. Neutron diffraction and bulk susceptibility measurements, show that the spins near these boundaries are weakly correlated and a carry an uncompensated ferromagnetic moment that can be tuned with a magnetic field. Spectroscopic measurements find these spins are bound with excitation energies less than the bulk magnetic spin waves and resemble the spectra from isolated spin clusters. Localized bound orphaned spins separate the two competing magnetic order parameters in CaFe_{2}O_{4}.
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Affiliation(s)
- C Stock
- School of Physics and Astronomy and Centre for Science at Extreme Conditions, University of Edinburgh, Edinburgh EH9 3FD, United Kingdom
| | - E E Rodriguez
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA
| | - N Lee
- Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, New Jersey 08854, USA
| | - F Demmel
- ISIS Facility, Rutherford Appleton Labs, Chilton, Didcot OX11 0QX, United Kingdom
| | - P Fouquet
- Institute Laue-Langevin, 6 rue Jules Horowitz, Boite Postale 156, 38042 Grenoble Cedex 9, France
| | - M Laver
- School of Metallurgy and Materials, University of Birmingham, B15 2TT, United Kingdom
| | - Ch Niedermayer
- Laboratory for Neutron Scattering, Paul Scherrer Institut, CH-5232 Villigen, Switzerland
| | - Y Su
- Jülich Centre for Neuton Science JCNS, Forschungszentrum Jülich GmbH, Outstation at MLZ, Lichtenbergstraße 1, D-85747 Garching, Germany
| | - K Nemkovski
- Jülich Centre for Neuton Science JCNS, Forschungszentrum Jülich GmbH, Outstation at MLZ, Lichtenbergstraße 1, D-85747 Garching, Germany
| | - M A Green
- School of Physical Sciences, University of Kent, Canterbury CT2 7NH, United Kingdom
| | - J A Rodriguez-Rivera
- NIST Center for Neutron Research, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899, USA
- Department of Materials Science, University of Maryland, College Park, Maryland 20742, USA
| | - J W Kim
- Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, New Jersey 08854, USA
| | - L Zhang
- Laboratory for Pohang Emergent Materials and Max Plank POSTECH Center for Complex Phase Materials, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - S-W Cheong
- Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, New Jersey 08854, USA
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Abstract
Acute mesenteric ischaemia is a rare complication of calcium channel blocker (CCB) overdose. A previous study reported a case of mesenteric ischaemia induced by poisoning with CCBs other than diltiazem. We present a case of nonocclusive mesenteric ischaemia (NOMI) induced by diltiazem poisoning. Through this case report, we wish to emphasize that the clinicians should keep the possibility of intestinal ischaemia in mind from the early phase of calcium channel blocker poisoning. In addition, close monitoring and intense abdominal examination including the abdominal computed tomography scan should be done if CCBs poisoning patients complained of an abdominal pain.
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Affiliation(s)
- JW Kim
- Konkuk University School of Medicine, Department of Emergency Medicine, Konkuk University Medical Center, Seoul, Korea
| | - SO Park
- Konkuk University School of Medicine, Department of Emergency Medicine, Konkuk University Medical Center, Seoul, Korea
| | - DY Hong
- Konkuk University School of Medicine, Department of Emergency Medicine, Konkuk University Medical Center, Seoul, Korea
| | - KJ Baek
- Konkuk University School of Medicine, Department of Emergency Medicine, Konkuk University Medical Center, Seoul, Korea
| | - KR Lee
- Konkuk University School of Medicine, Department of Emergency Medicine, Konkuk University Medical Center, Seoul, Korea
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Kim KW, Kim JH, Choe WJ, Kim JY, Lee SI, Kim KT, Park JS, Kim JW, Lee Y, Lee JH, Park J. Effectiveness of 100 Beats per Minute Music on Cardiopulmonary Resuscitation Compression Rate Education: A Manikin Study. HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791702400102] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Introduction Recent cardiopulmonary resuscitation (CPR) guidelines emphasize the importance of high-quality chest compression. The aim of this study is to determine the effect of education using music on the chest compression rate. Methods This randomised, open-labeled study enrolled 81 medical students. They were randomly divided into three groups. After they were educated in CPR according to the American Heart Association 2010 guidelines, they performed 100 chest compressions using a mannequin capable of collecting each compression depth and speed. After that, the control group received a verbal feedback about their own results. The metronome group was also notified of their own results, and listened to the metronome sound at 100 beats per minute (bpm). The music group listened to the music (about 100 bpm). Twenty-four hours after their CPR education, chest compressions were performed again with the method identical to the first evaluation. The results were compared using multivariate analysis of variances. Result Compression rate (bpm): There was a significant difference between the control (mean, 110.4; 95% CI: 104.4, 116.5) and metronome group (mean, 98.5; 95% CI: 91.6, 105.4) after education (p=0.01). There was a significant difference between control and music group (mean, 98.2; 95% CI: 94.6, 101.8) after education (p<0.001) There were no differences between the music and metronome group before or after education (p=0.50, p=0.94). However, the variance of music group was significantly less than the metronome group (p=0.01). Compression depth (inches): there was no difference between the groups according to the CPR education method. (Control: 1.8±0.3; Metronome group: 1.6±0.2; Music group: 1.7±0.3 p=0.09) Conclusion Both education method of using music and metronome are more effective than conventional method. However the effect of using music may be better than using metronome.
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Affiliation(s)
- KW Kim
- Inje University Seoul Paik Hospital, Department of Anesthesiology and Pain Medicine, 9 Marunnai-ro, Jung-gu, Seoul, Korea
| | - JH Kim
- Inje University Ilsan Paik Hospital, Department of Anesthesiology and Pain Medicine, 2240 Daehwa-dong, IlsanSeo-gu, Goyang-si, Gyeonggi-do, Korea
| | - WJ Choe
- Inje University Ilsan Paik Hospital, Department of Anesthesiology and Pain Medicine, 2240 Daehwa-dong, IlsanSeo-gu, Goyang-si, Gyeonggi-do, Korea
| | - JY Kim
- Inje University Ilsan Paik Hospital, Department of Anesthesiology and Pain Medicine, 2240 Daehwa-dong, IlsanSeo-gu, Goyang-si, Gyeonggi-do, Korea
| | - SI Lee
- Inje University Ilsan Paik Hospital, Department of Anesthesiology and Pain Medicine, 2240 Daehwa-dong, IlsanSeo-gu, Goyang-si, Gyeonggi-do, Korea
| | - KT Kim
- Inje University Ilsan Paik Hospital, Department of Anesthesiology and Pain Medicine, 2240 Daehwa-dong, IlsanSeo-gu, Goyang-si, Gyeonggi-do, Korea
| | - JS Park
- Inje University Ilsan Paik Hospital, Department of Anesthesiology and Pain Medicine, 2240 Daehwa-dong, IlsanSeo-gu, Goyang-si, Gyeonggi-do, Korea
| | - JW Kim
- Inje University Ilsan Paik Hospital, Department of Anesthesiology and Pain Medicine, 2240 Daehwa-dong, IlsanSeo-gu, Goyang-si, Gyeonggi-do, Korea
| | - Y Lee
- Dongguk University Medical Center Ilsan Hospital, Department of Anesthesiology/Statistic Institute, 27 Dongguk-ro IlsanDong-gu, Goyang-si, Gyeonggi-do, Korea
| | - JH Lee
- Dongguk University Medical Center Ilsan Hospital, Department of Anesthesiology/Statistic Institute, 27 Dongguk-ro IlsanDong-gu, Goyang-si, Gyeonggi-do, Korea
| | - J Park
- Inje University Ilsan Paik Hospital, Department of Emergency Medicine, 2240 Daehwa-dong, IlsanSeo-gu, Goyang-si, Gyeonggi-do, Korea
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Lee YB, Lee SY, Choi JY, Lee JH, Chae HS, Kim JW, Han KD, Park YG, Yu DS. Incidence, prevalence, and mortality of Adamantiades-Behçet's disease in Korea: a nationwide, population-based study (2006-2015). J Eur Acad Dermatol Venereol 2017; 32:999-1003. [PMID: 28940547 DOI: 10.1111/jdv.14601] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 09/05/2017] [Indexed: 11/29/2022]
Abstract
BACKGROUND The epidemiology of Adamantiades-Behçet's disease varies among ethnic populations worldwide. Trends in the incidence of Adamantiades-Behçet's disease have not been investigated based on the Korean National Health Insurance database. OBJECTIVES This study investigated the incidence and mortality of Adamantiades-Behçet's disease by age using nationwide population data in Korea. METHODS A nationwide population-based cohort study was performed using the Korean National Health Insurance Claims Database from 2006 to 2015. The incidence of Adamantiades-Behçet's disease was calculated by age, sex, calendar year and habitat. And comorbid metabolic diseases were also analysed in patients with Adamantiades-Behçet's disease. RESULTS The annual incidence of Adamantiades-Behçet's disease per 100 000 person-years was 3.976 (2.587 for males and 5.373 for females) from 2006 to 2015. The incidence of Adamantiades-Behçet's disease peaked among people in their 40s (6.561 per 100 000 person-years). Incidence was significantly higher in subjects with comorbid metabolic conditions, such as diabetes mellitus, hypertension and dyslipidemia. The mortality rate per 1000 person-years increased with age in patients with Adamantiades-Behçet's disease. CONCLUSIONS This study showed the incidence, prevalence and mortality of Adamantiades-Behçet's disease. Metabolic conditions increased the risk of Adamantiades-Behçet's disease among Koreans.
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Affiliation(s)
- Y B Lee
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - S Y Lee
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - J Y Choi
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - J H Lee
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - H S Chae
- Department of Internal Medicine, The Catholic University of Korea, Seoul, South Korea
| | - J W Kim
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - K D Han
- Department of Medical Statistics, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Y G Park
- Department of Medical Statistics, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - D S Yu
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Lee YK, Kim TY, Ha YC, Song SH, Kim JW, Shon HC, Chang JS, Koo KH. Atypical subtrochanteric fractures in Korean hip fracture study. Osteoporos Int 2017; 28:2853-2858. [PMID: 28612307 DOI: 10.1007/s00198-017-4112-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Accepted: 06/04/2017] [Indexed: 12/18/2022]
Abstract
UNLABELLED In Korean, atypical subtrochanteric fractures (ASF) were rare. Higher BMI and use of bisphosphonate were significant risk factors of ASF. INTRODUCTION Recently, ASF have been reported to increase among patients on bisphosphonate. However, the incidence of ASF and the association between ASF and bisphosphonate use have not been well defined in Asian population. Our purposes are (1) to estimate the proportion of ASF among Korean patients with proximal femur fracture and (2) to determine the associated risk factors of ASF in the Korean patients. METHODS We conducted a multicenter (16 academic hospitals), prospective Korean hip fracture study on hip fracture in a cohort of patients aged 50 years or older from South Korea between July 2014 and May 2016. As a part of Korean hip fracture study, primary analysis examined the proportion of ASF among proximal femur fracture. To identify ASF, according to the definition by ASBMR task force, all radiographs of subtrochanteric fracture were reviewed. Associated risk factors for occurrence of ASF were also evaluated by using multivariable logistic regression analysis. RESULTS Among 1361 patients with proximal femoral fractures due to low-energy trauma, 17 fractures (1.2%) were identified as ASF. Higher BMI and use of bisphosphonate before injury were independent risk factors of ASF. CONCLUSION In Korean, ASF were rare. Higher BMI and use of bisphosphonate were significant risk factors of ASF.
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Affiliation(s)
- Y-K Lee
- Department of Orthopedic Surgery, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - T-Y Kim
- Department of Orthopaedic Surgery, Hallym University Sacred Heart Hospital, Anyang, South Korea
| | - Y-C Ha
- Department of Orthopaedic Surgery, College of Medicine, Chung-Ang University, 224-1 Heukseok-dong, Dongjak-gu, Seoul, 156-755, South Korea.
| | - S-H Song
- Department of Orthopaedic Surgery, Myongji Hospital, Goyang, South Korea
| | - J W Kim
- Department of Orthopedic Surgery, Haeundae Paik Hospital, College of Medicine, Inje University, Busan, South Korea
| | - H C Shon
- Department of Orthopaedic Surgery, College of Medicine, Chungbuk National University, Cheongju, South Korea
| | - J S Chang
- Department of Orthopedic Surgery, Asan Medical Center, College of Medicine, University of Ulsan, Seoul, South Korea
| | - K-H Koo
- Department of Orthopedic Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
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Jung J, Kim JW, Moon IS, Kim SH, Choi JY. Vibrant Soundbridge can improve the most comfortable listening level in sensorineural hearing loss: Our experience with 61 patients. Clin Otolaryngol 2017; 43:369-373. [PMID: 28834277 DOI: 10.1111/coa.12958] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/13/2017] [Indexed: 11/30/2022]
Affiliation(s)
- J Jung
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - J W Kim
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - I S Moon
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - S H Kim
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - J Y Choi
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
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Hwang CS, Kim JW, Kim JW, Lee EJ, Kim CH, Yoon JH, Cho HJ. Comparison of robotic and coblation tongue base resection for obstructive sleep apnoea. Clin Otolaryngol 2017; 43:249-255. [PMID: 28800204 DOI: 10.1111/coa.12951] [Citation(s) in RCA: 12] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/07/2017] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To compare the efficacy and safety of transoral robotic surgery (TORS) with endoscope-guided coblation tongue base resection. DESIGN Retrospective case-control study. SETTING University-based tertiary care medical center. PARTICIPANTS Patients with obstructive sleep apnoea (OSA) who underwent endoscope-guided tongue base coblation resection or transoral robotic surgery (TORS) in combination with lateral pharyngoplasty at a single institution in South Korea between April 2013 and December 2016 were investigated. Forty-five patients who had moderate-to-severe OSA with tongue base collapse and a minimum follow-up period of 6 months with postoperative polysomnography (PSG) were enrolled in this study. MAIN OUTCOME MEASURES All patients underwent pre- and postoperative (at least 4 months after surgery) overnight PSG. Available information on results of the PSG, Epworth sleepiness scale and complications of the TORS and coblation groups were compared. RESULTS Postoperative PSG studies showed improved sleep quality for most patients. The mean postoperative apnoea-hypopnea index (AHI) was reduced significantly from 45.0 to 17.0 events/h (P < .0001) in the TORS group and from 45.6 to 16.2 events/h (P < .0001) in the coblation group. The mean rates of improvement (AHI reduction > 50%) were 75.0% in TORS patients and 62.1% in coblation patients and the difference was not significant. Less frequent postoperative morbidity, including bleeding, taste dysfunction and foreign body sensation, was recorded in TORS patients. CONCLUSIONS Both the coblation and TORS groups showed similar surgical outcomes, TORS achieved PSG results non-inferior to and complication rates comparable to coblation.
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Affiliation(s)
- C S Hwang
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - J W Kim
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - J W Kim
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - E J Lee
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
| | - C-H Kim
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea.,The Airway Mucus Institute, Yonsei University College of Medicine, Severance Hospital, Seoul, Korea
| | - J-H Yoon
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea.,The Airway Mucus Institute, Yonsei University College of Medicine, Severance Hospital, Seoul, Korea
| | - H-J Cho
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea.,The Airway Mucus Institute, Yonsei University College of Medicine, Severance Hospital, Seoul, Korea
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46
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Koo B, Kim JW, de Lange CFM, Hossain MM, Nyachoti CM. Effects of diet complexity and multicarbohydrase supplementation on growth performance, nutrient digestibility, blood profile, intestinal morphology, and fecal score in newly weaned pigs. J Anim Sci 2017; 95:4060-4071. [PMID: 28992007 DOI: 10.2527/jas2017.1760] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
To study the effects of diet complexity and multicarbohydrase (MC) supplementation, 144 piglets (6.70 ± 0.81 kg of BW) weaned at 21 ± 2 d of age (1:1 male to female ratio) were assigned to 1 of 6 dietary treatments in a 3 × 2 factorial arrangement based on diet complexity (complex1, complex2, and simple) and MC addition (0 vs. 0.1% of MC). Diets were provided in a 2-phase feeding program with phase I (d 1 to 14) and phase II diets (d 15 to 28). Complex1 was formulated to mimic a conventional weaner diet with blood plasma, fish meal, dried whey, and skim milk powder, whereas complex2 partially or totally replaced these ingredients with various plant-based ingredients. The simple diet primarily comprised corn, wheat, and soybean meal. No interactions were found between diet complexity and MC supplementation ( > 0.10), except for apparent total tract digestibility (ATTD) of ash and globulin concentration on d 28 ( < 0.05). Pigs fed the complex1 diet had greater ( < 0.01) ADG, ADFI, and G:F than those fed the other diets during the first week after weaning. However, no differences in ADG or ADFI were observed for pigs fed the complex1 and simple diets throughout the 28-d experimental period ( > 0.10), whereas the complex2 diet led to lower ADG and ADFI compared with the complex1 diet ( < 0.05). Overall, G:F was greater for pigs fed the simple diet compared with those fed the complex1 diet ( < 0.01). Pigs fed the simple diet showed ATTD of DM, OM, GE, and ash comparable to those fed the complex1 diet on d 14 ( > 0.10). In contrast, greater ATTD of DM, OM, NDF, GE, and ash was observed ( < 0.05) in pigs fed the complex1 diet than in those fed the complex2 diet or the simple diet on d 28. The simple diet increased the lymphocyte proportion in serum compared with the complex1 diet ( < 0.01) on d 14. Pigs fed the complex1 diet had a greater ( < 0.05) ratio of villus height (VH) to crypt depth (CD) in the ileum compared with the other diets. The complex2 diet decreased ( < 0.05) the fecal score during 3 wk of the postweaning period compared with the complex1 diet. Dietary MC supplementation increased ( < 0.05) G:F during the overall experimental period, VH in the ileum, VH:CD ratio in the duodenum, and ATTD of DM and GE but it reduced fecal score ( < 0.05). In conclusion, feeding a simple diet resulted in BW comparable to feeding the complex1 diet, but it led to inferior intestinal morphology and ATTD of nutrients on d 28. Also, MC supplementation could be beneficial regardless of diet complexity.
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Kim JW, Koo B, Nyachoti CM. Digestible, metabolizable, and net energy of camelina cake fed to growing pigs and additivity of energy in mixed diets. J Anim Sci 2017; 95:4037-4044. [PMID: 28992017 DOI: 10.2527/jas2017.1759] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
This experiment was conducted to determine the DE, ME, and NE contents of camelina cake (CC) and to test the hypothesis that dietary glucosinolates originating from CC will affect the additivity of energy in mixed diets containing different inclusion levels of corn, soybean meal (SBM), and CC. A total of 30 growing barrows ([Yorkshire × Landrace] × Duroc) with a mean BW of 16.8 kg (SD 1.4) were randomly allotted to 1 of 5 treatments with 6 replicates per treatment. Pigs were fed experimental diets for 16 d, including 10 d for adaptation and 6 d for total collection of feces and urine. The 5 experimental diets consisted of 3 corn-based diets to determine the DE, ME, and NE of the 3 ingredients (corn, SBM, and CC) and 2 mixed diets to test the additivity of DE, ME, and NE. The corn diet contained 97.52% corn; the SBM diet contained 67.52% corn and 30.0% SBM; the CC diet contained 67.52% corn and 30.0% CC; the Mixed diet 1 contained 67.52% corn, 20.0% SBM, and 10.0% CC; and the Mixed diet 2 contained 67.25% corn, 10.0% SBM, and 20.0% CC. Vitamins and minerals were included in the diets to meet or exceed the requirements for growing pigs (). Pigs were fed their assigned diets at 550 kcal ME/kg BW per day on the basis of BW on d 1, 5, and 10, which was close to ad libitum intake. Pigs had free access to water. Determined DE, ME, and NE contents of corn were 3,348, 3,254, and 2,579 kcal/kg, respectively; those of SBM were 3,626, 3,405, and 2,129 kcal/kg, respectively; and those of CC were 3,755, 3,465, and 2,383 kcal/kg, respectively. No differences between the predicted and determined DE, ME, and NE were observed in the 2 mixed diets. In conclusion, DE, ME, and calculated NE content of CC fed to growing pigs were 3,755, 3,465, and 2,383 kcal/kg (as-fed basis), respectively. In addition, additivity of DE, ME, and calculated NE was observed in the mixed diets containing corn, SBM, and CC, which indicates that dietary glucosinolates originating from up to 30% of CC inclusion do not affect DE, ME, and calculated NE of diets.
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Kim HY, Kim CW, Choi JY, Yu DS, Kim JW, Han KD, Park YG, Lee YB. Atopic dermatitis is inversely associated with hepatitis B antigen positivity: a population-based cohort study. J Eur Acad Dermatol Venereol 2017. [PMID: 28646620 DOI: 10.1111/jdv.14428] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
BACKGROUND No clear association between hepatitis B virus (HBV) infection and atopic dermatitis (AD) has been established. Some studies have reported that subjects with HBV had an increased risk of atopy; other studies reported an inverse association between HBV seropositivity and allergic diseases. OBJECTIVE We evaluated the association between AD and hepatitis B antigen (HBsAg) positivity using Korean National Health and Nutrition Examination Survey data. METHODS In total, 14 776 participants aged >19 years were included in the analysis. Multiple logistic regression analyses were used to evaluate the odds ratio of HBsAg positivity in association with AD and asthma. RESULTS The prevalence of HBsAg positivity was lower in individuals with AD than in those without AD (mean [SE], 0.7% [0.4] vs. 3.7% [0.2]; P < 0.001). However, HBsAg positivity was not significantly associated with asthma (3.7% [0.2] vs. 2.8% [0.8]; P < 0.001). HBsAg positivity decreased the risk of AD significantly (OR = 0.223; 95% CI = 0.069-0.72). CONCLUSIONS This study demonstrates an inverse association between AD and HBsAg positivity using a nationwide, population-based, cross-sectional health examination and survey.
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Affiliation(s)
- H Y Kim
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - C W Kim
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - J Y Choi
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - D S Yu
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - J W Kim
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - K D Han
- Department of Medical Statistics, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Y G Park
- Department of Medical Statistics, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Y B Lee
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Kim DJ, Noh SH, Ahn SM, Kim JW. Influence of a ring-shaped pump beam on temperature distribution and thermal lensing in end-pumped solid state lasers. Opt Express 2017; 25:14668-14675. [PMID: 28789050 DOI: 10.1364/oe.25.014668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 06/12/2017] [Indexed: 06/07/2023]
Abstract
A simple method for reducing thermal lensing in an end-pumped solid state laser using a ring-shaped pump beam is reported. Analytical expressions for the temperature distribution and the thermal lensing focal length in a laser medium end-pumped by a beam with a ring-shaped intensity profile are derived. The results indicate that thermal effects including thermal lensing can be significantly reduced due to a more uniform temperature distribution. This approach has been applied to a Nd:YVO4 amplifier operating at 1064 nm confirming that the brightness of the output beam can be remarkably improved at high power levels due to the better beam quality for the ring-shaped pumping compared to the conventional quasi-top-hat pumping. The prospects for power scaling and further improvement in laser performance will be discussed.
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Müller EJ, van Albada SJ, Kim JW, Robinson PA. Unified neural field theory of brain dynamics underlying oscillations in Parkinson's disease and generalized epilepsies. J Theor Biol 2017. [PMID: 28633970 DOI: 10.1016/j.jtbi.2017.06.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The mechanisms underlying pathologically synchronized neural oscillations in Parkinson's disease (PD) and generalized epilepsies are explored in parallel via a physiologically-based neural field model of the corticothalamic-basal ganglia (CTBG) system. The basal ganglia (BG) are approximated as a single effective population and their roles in the modulation of oscillatory dynamics of the corticothalamic (CT) system and vice versa are analyzed. In addition to normal EEG rhythms, enhanced activity around 4 Hz and 20 Hz exists in the model, consistent with the characteristic frequencies observed in PD. These rhythms result from resonances in loops formed between the BG and CT populations, analogous to those that underlie epileptic oscillations in a previous CT model, and which are still present in the combined CTBG system. Dopamine depletion is argued to weaken the dampening of these loop resonances in PD, and network connections then explain the significant coherence observed between BG, thalamic, and cortical population activity around 4-8 Hz and 20 Hz. Parallels between the afferent and efferent connection sites of the thalamic reticular nucleus (TRN) and BG predict low dopamine to correspond to a reduced likelihood of tonic-clonic (grand mal) seizures, which agrees with experimental findings. Furthermore, the model predicts an increased likelihood of absence (petit mal) seizure resulting from pathologically low dopamine levels in accordance with experimental observations. Suppression of absence seizure activity is demonstrated when afferent and efferent BG connections to the CT system are strengthened, which is consistent with other CTBG modeling studies. The BG are demonstrated to have a suppressive effect on activity of the CTBG system near tonic-clonic seizure states, which provides insight into the reported efficacy of current treatments in BG circuits. Sleep states of the TRN are also found to suppress pathological PD activity in accordance with observations. Overall, the findings demonstrate strong parallels between coherent oscillations in generalized epilepsies and PD, and provide insights into possible comorbidities.
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Affiliation(s)
- E J Müller
- School of Physics, The University of Sydney, Sydney, NSW 2006, Australia; Center for Integrative Brain Function, The University of Sydney, NSW 2006, Australia.
| | - S J van Albada
- School of Physics, The University of Sydney, Sydney, NSW 2006, Australia; Institute of Neuroscience and Medicine (INM-6) and Institute for Advanced Simulation (IAS-6) and JARA BRAIN Institute I, Jülich Research Center, Jülich, Germany
| | - J W Kim
- School of Physics, The University of Sydney, Sydney, NSW 2006, Australia; Center for Integrative Brain Function, The University of Sydney, NSW 2006, Australia
| | - P A Robinson
- School of Physics, The University of Sydney, Sydney, NSW 2006, Australia; Center for Integrative Brain Function, The University of Sydney, NSW 2006, Australia
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