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Huang YE, Chuang CL, Wu SH, Chang YM, Kao PF. Pneumorrhachis With FDG Uptake Cervical Lesions on PET/CT of a Patient With Suspected Recurrent Hypopharyngeal Cancer. Clin Nucl Med 2024; 49:462-463. [PMID: 38466017 DOI: 10.1097/rlu.0000000000005164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
ABSTRACT A 57-year-old man presented with odynophagia for 1 week was referred for FDG PET/CT scan to rule out recurrent hypopharyngeal cancer. The FDG PET/CT showed hypermetabolic lesions in hypopharyngeal area and adjacent cervical spine with pneumorrhachis, the presence of intraspinal air, on attenuation CT images, which might indicate a life-threatening infection. An emergency MRI confirmed the presence of cervical spondylodiscitis with an epidural abscess. The patient rapidly progressed to quadriplegia and difficulty voiding on the same day as the PET/CT scan, leading to emergent operation. The patient received antibiotics treatment and discharged 4 months later without evidence of cancer recurrence.
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Ivanovic V, Broadhead K, Chang YM, Hamer JF, Beck R, Hacein-Bey L, Qi L. Shift Volume Directly Impacts Neuroradiology Error Rate at a Large Academic Medical Center: The Case for Volume Limits. AJNR Am J Neuroradiol 2024; 45:374-378. [PMID: 38238099 DOI: 10.3174/ajnr.a8119] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 12/18/2023] [Indexed: 04/10/2024]
Abstract
BACKGROUND AND PURPOSE Unlike in Europe and Japan, guidelines or recommendations from specialized radiological societies on workflow management and adaptive intervention to reduce error rates are currently lacking in the United States. This study of neuroradiologic reads at a large US academic medical center, which may hopefully contribute to this discussion, found a direct relationship between error rate and shift volume. MATERIALS AND METHODS CT and MR imaging reports from our institution's Neuroradiology Quality Assurance database (years 2014-2020) were searched for attending physician errors. Data were collected on shift volume specific error rates per 1000 interpreted studies and RADPEER scores. Optimal cutoff points for 2, 3 and 4 groups of shift volumes were computed along with subgroups' error rates. RESULTS A total of 643 errors were found, 91.7% of which were clinically significant (RADPEER 2b, 3b). The overall error rate (errors/1000 examinations) was 2.36. The best single shift volume cutoff point generated 2 groups: ≤ 26 studies (error rate 1.59) and > 26 studies (2.58; OR: 1.63, P < .001). The best 2 shift volume cutoff points generated 3 shift volume groups: ≤ 19 (1.34), 20-28 (1.88; OR: 1.4, P = .1) and ≥ 29 (2.6; OR: 1.94, P < .001). The best 3 shift volume cutoff points generated 4 groups: ≤ 24 (1.59), 25-66 (2.44; OR: 1.54, P < .001), 67-90 (3.03; OR: 1.91, P < .001), and ≥ 91 (2.07; OR: 1.30, P = .25). The group with shift volume ≥ 91 had a limited sample size. CONCLUSIONS Lower shift volumes yielded significantly lower error rates. The lowest error rates were observed with shift volumes that were limited to 19-26 studies. Error rates at shift volumes between 67-90 studies were 226% higher, compared with the error rate at shift volumes of ≤ 19 studies.
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Affiliation(s)
- Vladimir Ivanovic
- From the Department of Radiology, Section of Neuroradiology (V.I., J.F.H., R.B.), Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Kenneth Broadhead
- Department of Statistics (K.B.), Colorado State University, Fort Collins, Colorado
| | - Yu-Ming Chang
- Department of Radiology, Section of Neuroradiology (Y.-M.C.), Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | - John F Hamer
- From the Department of Radiology, Section of Neuroradiology (V.I., J.F.H., R.B.), Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Ryan Beck
- From the Department of Radiology, Section of Neuroradiology (V.I., J.F.H., R.B.), Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Lotfi Hacein-Bey
- Department of Radiology, Section of Neuroradiology (L.H.-B.), University of California Davis Medical Center, Sacramento, California
| | - Lihong Qi
- Department of Public Health Sciences (L.Q.), School of Medicine, University of California Davis, Davis, California
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Nhat Quyen N, Tzeng WY, Hsu CE, Lin IA, Chen WH, Jia HH, Wang SC, Liu CE, Chen YS, Chen WL, Chou TL, Wang IT, Kuo CN, Lin CL, Wu CT, Lin PH, Weng SC, Cheng CM, Kuo CY, Tu CM, Chu MW, Chang YM, Lue CS, Hsueh HC, Luo CW. Three-dimensional ultrafast charge-density-wave dynamics in CuTe. Nat Commun 2024; 15:2386. [PMID: 38493205 PMCID: PMC10944522 DOI: 10.1038/s41467-024-46615-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 03/04/2024] [Indexed: 03/18/2024] Open
Abstract
Charge density waves (CDWs) involved with electronic and phononic subsystems simultaneously are a common quantum state in solid-state physics, especially in low-dimensional materials. However, CDW phase dynamics in various dimensions are yet to be studied, and their phase transition mechanism is currently moot. Here we show that using the distinct temperature evolution of orientation-dependent ultrafast electron and phonon dynamics, different dimensional CDW phases are verified in CuTe. When the temperature decreases, the shrinking of c-axis length accompanied with the appearance of interchain and interlayer interactions causes the quantum fluctuations (QF) of the CDW phase until 220 K. At T < 220 K, the CDWs on the different ab-planes are finally locked with each other in anti-phase to form a CDW phase along the c-axis. This study shows the dimension evolution of CDW phases in one CDW system and their stabilized mechanisms in different temperature regimes.
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Grants
- 112-2119-M-A49-012-MBK Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)
- 109-2112-M-009-020-MY3 Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)
- 109-2124-M-009-003-MY3 Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)
- 109-2119-M-002 -026 -MY3 Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)
- 108-2112-M-002-013-MY3 Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)
- 111-2124-M-213-001 Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)
- 108-2112-M-002 -013 -MY3 Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)
- 109-2119-M-002 -026 -MY3 Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)
- 112-2124-M-006-009 Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)
- 110-2112-M-032-014-MY3 Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)
- Ministry of Education (Ministry of Education, Republic of China (Taiwan))
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Affiliation(s)
- Nguyen Nhat Quyen
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan
| | - Wen-Yen Tzeng
- Department of Electronic Engineering, National Formosa University, Yunlin, 632, Taiwan
| | - Chih-En Hsu
- Department of Physics, Tamkang University, New Taipei City, 251301, Taiwan
| | - I-An Lin
- Department of Physics, Tamkang University, New Taipei City, 251301, Taiwan
| | - Wan-Hsin Chen
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan
| | - Hao-Hsiang Jia
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
| | - Sheng-Chiao Wang
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan
| | - Cheng-En Liu
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan
| | - Yu-Sheng Chen
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
| | - Wei-Liang Chen
- Center for Condensed Matter Sciences, National Taiwan University, Taipei, 10617, Taiwan
| | - Ta-Lei Chou
- Center for Condensed Matter Sciences, National Taiwan University, Taipei, 10617, Taiwan
| | - I-Ta Wang
- Center for Condensed Matter Sciences, National Taiwan University, Taipei, 10617, Taiwan
| | - Chia-Nung Kuo
- Department of Physics, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Chun-Liang Lin
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan
| | - Chien-Te Wu
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan
- Physics Division, National Center for Theoretical Sciences, Taipei, Taiwan
| | - Ping-Hui Lin
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
| | - Shih-Chang Weng
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
| | - Cheng-Maw Cheng
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
| | - Chang-Yang Kuo
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
| | - Chien-Ming Tu
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan
- Undergraduate Degree Program of Systems Engineering and Technology, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan
- Chung Cheng Institute of Technology, National Defense University, Taoyuan, 335009, Taiwan
| | - Ming-Wen Chu
- Center for Condensed Matter Sciences, National Taiwan University, Taipei, 10617, Taiwan
- Center of Atomic Initiative for New Materials (AI-MAT), National Taiwan University, Taipei, 10617, Taiwan
| | - Yu-Ming Chang
- Center for Condensed Matter Sciences, National Taiwan University, Taipei, 10617, Taiwan
- Center of Atomic Initiative for New Materials (AI-MAT), National Taiwan University, Taipei, 10617, Taiwan
| | - Chin Shan Lue
- Department of Physics, National Cheng Kung University, Tainan, 70101, Taiwan.
- Taiwan Consortium of Emergent Crystalline Materials (TCECM), National Science and Technology Council, Taipei, 10601, Taiwan.
| | - Hung-Chung Hsueh
- Department of Physics, Tamkang University, New Taipei City, 251301, Taiwan.
| | - Chih-Wei Luo
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan.
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan.
- Taiwan Consortium of Emergent Crystalline Materials (TCECM), National Science and Technology Council, Taipei, 10601, Taiwan.
- Institute of Physics and Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan.
- Department of Physics, University of Washington, Seattle, Washington, 98195, USA.
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Wang CM, Chang YM, Tzeng RC, Chen TS, Wu ST, Lin KH, Chang CC, Huang MH, Vong SC, Wu MH, Chen CH, Lin CW, Sung PS. A simple, organized web-based system improved the transfer efficiency and patient outcomes for endovascular thrombectomy in regional stroke network. J Formos Med Assoc 2024:S0929-6646(24)00089-5. [PMID: 38360489 DOI: 10.1016/j.jfma.2024.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 02/04/2024] [Accepted: 02/06/2024] [Indexed: 02/17/2024] Open
Abstract
BACKGROUND Endovascular thrombectomy (EVT) is a time-sensitive treatment for acute ischemic stroke with large vessel occlusion. To optimize transfer efficiency, a web-based platform was introduced in the Tainan Stroke Network (TSN). We assessed its application and effectiveness in regional stroke care. METHOD This new web-based platform containing a questionnaire-style interface was introduced on October 1, 2021. To assess the transfer efficiency and patient outcomes, acute stroke patients transferred from PSCs to CSC for EVT from April 01, 2020, to December 30, 2022, were enrolled. The patients were classified into the traditional transferal pathway (TTP) group and the new transferal pathway (NTP) group depending on mode of transfer. Patient characteristics, time segments after stroke onset and outcome were compared between groups. RESULT A total of 104 patients were enrolled, with 77 in the TTP group and 27 in the NTP group. Compared to the TTP group, the NTP group had a significantly shorter onset-to-CSC door time (TTP vs. NTP: 267 vs. 198 min; p = 0.041) and a higher EVT rate (TTP vs. NTP: 18.2% vs. 48.1%, p = 0.002). Among EVT patients, those in the NTP group had a significantly shorter CSC door-to-puncture time (TTP vs. NTP: 131.5 vs. 110 min; p = 0.029). The NTP group had a higher rate of good functional outcomes at 3 months (TTP vs. NTP: 21% vs. 61.5%; p = 0.034). CONCLUSION This new web-based EVT transfer system provides notable improvements in clinical outcomes, transfer efficiency, and EVT execution for potential EVT candidates without markedly changing the regional stroke care paradigm.
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Affiliation(s)
- Chun-Min Wang
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yu-Ming Chang
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ray-Chang Tzeng
- Department of Neurology, Tainan Municipal Hospital, Tainan, Taiwan
| | | | | | | | - Che-Chao Chang
- An Nan Hospital, China Medical University, Tainan, Taiwan
| | - Meng-Hua Huang
- Kaohsiung Veterans General Hospital Tainan Branch, Tainan, Taiwan
| | | | - Mu-Han Wu
- Tainan Hospital, Ministry of Health and Welfare, Tainan, Taiwan
| | - Chih-Hung Chen
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Che-Wei Lin
- Department of Biomedical Engineering, National Cheng Kung University, Tainan, Taiwan.
| | - Pi-Shan Sung
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
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Khorasanizadeh M, Paul U, Chang YM, Moore JM, Ogilvy CS, Thomas AJ. The effect of patient age on the degree of midline shift caused by chronic subdural hematomas: a volumetric analysis. J Neurosurg 2024; 140:537-543. [PMID: 37877977 DOI: 10.3171/2023.6.jns222890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 06/04/2023] [Indexed: 10/26/2023]
Abstract
OBJECTIVE Chronic subdural hematomas (CSDHs) are the among the most common conditions treated by neurosurgeons. Midline shift (MLS) is used as a radiological marker of CSDH severity and the potential need for urgent surgical evacuation. However, a patient's age may affect the degree of MLS for a given hematoma volume. This study aimed to investigate the correlation between the patient's age and the MLS caused by CSDH. METHODS The database of patients treated for CSDH was reviewed in a single institution. Patients with unilateral CSDH were included. To measure CSDH volume, the preprocedural head CT scans underwent 3D volumetric reconstruction using the TeraRecon software. The effect of age on MLS after adjusting for CSDH volume was investigated using linear regression analysis. RESULTS Sixty-nine hematomas in 69 patients were included. The age of patients ranged from 25 to 94 years (mean 71.6 years). Hematoma volume and MLS ranged from 27.8 to 215 mL (mean 99.3 mL) and 0-17 mm (mean 6.5 mm), respectively. On multivariate regression analysis, MLS showed a significant independent negative correlation with age after adjusting for CSDH volume (OR -0.11, 95% CI -0.16 to -0.06; p < 0.001), meaning that for a fixed CSDH volume, with each 10-year increase in age the MLS will reduce by 1.1 mm. Moreover, MLS-to-volume ratio showed a significant negative linear correlation with age (r2 = 0.32; p < 0.001). Ten-milliliter increments in CSDH volume resulted in a 1.09-mm increase in MLS in patients younger than 60 years, which is 2.4-fold higher compared to the 0.46-mm increase in those older than 75 years (p < 0.001). CONCLUSIONS For a fixed CSDH volume, older age correlates with significantly lower MLS. This could be explained by higher parenchymal compliance in older individuals due to increased brain atrophy, and a larger subdural space. Clinical use of MLS to estimate severity of CSDH and gauge treatment decisions should take the patient's age into account.
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Affiliation(s)
- MirHojjat Khorasanizadeh
- 1Neurosurgical Service, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Umika Paul
- 2UMass Chan Medical School, Worcester, Massachusetts
| | - Yu-Ming Chang
- 3Department of Neuroradiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts; and
| | - Justin M Moore
- 1Neurosurgical Service, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Christopher S Ogilvy
- 1Neurosurgical Service, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Ajith J Thomas
- 4Department of Neurological Surgery, Cooper University Health Care, Cooper Medical School of Rowan University, Camden, New Jersey
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Chiang KS, Chang YM, Liu HI, Lee JY, Jarroudi ME, Bock CH. Survival Analysis as a Basis for Testing Hypotheses when Using Quantitative Ordinal Scale Disease Severity Data. Phytopathology 2024; 114:378-392. [PMID: 37606348 DOI: 10.1094/phyto-02-23-0055-r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
Disease severity in plant pathology is often measured by the amount of a plant or plant part that exhibits disease symptoms. This is typically assessed using a numerical scale, which allows a standardized, convenient, and quick method of rating. These scales, known as quantitative ordinal scales (QOS), divide the percentage scale into a predetermined number of intervals. There are various ways to analyze these ordinal data, with traditional methods involving the use of midpoint conversion to represent the interval. However, this may not be precise enough, as it is only an estimate of the true value. In this case, the data may be considered interval-censored, meaning that we have some knowledge of the value but not an exact measurement. This type of uncertainty is known as censoring, and techniques that address censoring, such as survival analysis (SA), use all available information and account for this uncertainty. To investigate the pros and cons of using SA with QOS measurements, we conducted a simulation based on three pathosystems. The results showed that SA almost always outperformed midpoint conversion with data analyzed using a t test, particularly when data were not normally distributed. Midpoint conversion is currently a standard procedure. In certain cases, the midpoint approach required a 400% increase in sample size to achieve the same power as the SA method. However, as the mean severity increases, fewer additional samples are needed (approximately an additional 100%), regardless of the assessment method used. Based on these findings, we conclude that SA is a valuable method for enhancing the power of hypothesis testing when analyzing QOS severity data. Future research should investigate the wider use of survival analysis techniques in plant pathology and their potential applications in the discipline.
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Affiliation(s)
- K S Chiang
- Division of Biometrics, Department of Agronomy, National Chung Hsing University, Taichung, Taiwan
| | - Y M Chang
- Department of Statistics, Tunghai University, Taichung 407, Taiwan
| | - H I Liu
- Bachelor Program in Industrial Artificial Intelligence, Ming Chi University of Technology, New Taipei City 243, Taiwan
| | - J Y Lee
- Department of Statistics, Feng Chia University, Taichung 407, Taiwan
| | - M El Jarroudi
- University of Liège, Department of Environmental Sciences and Management, SPHERES Research Unit, Arlon, Belgium
| | - C H Bock
- U.S. Department of Agriculture-Agricultural Research Service-SEFTNRL, Byron, GA 31008, U.S.A
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Gulo DP, Hung NT, Chen WL, Wang S, Liu M, Kauppinen EI, Maruyama S, Chang YM, Saito R, Liu HL. Interacting Phonons between Layers in Raman Spectra of Carbon Nanotubes inside Boron Nitride Nanotubes. J Phys Chem Lett 2023; 14:10263-10270. [PMID: 37939010 DOI: 10.1021/acs.jpclett.3c02528] [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: 11/10/2023]
Abstract
We present the resonant Raman spectra of a single-wall carbon nanotube inside a multiwall boron nitride nanotube (SWNT@BNNT). At EL = 1.58 eV, SWNT@BNNT exhibited resonant Raman spectra at 807 (ωBN) and 804 cm-1 (ωGr). Their intensities almost disappeared at EL = 2.33 eV. We assigned ωBN to the out-of-plane BN phonon mode that coupled with ωGr. At EL = 4.66 eV, the G+ and G- bands of the SWNT@BNNT red-shifted 3.8 cm-1 compared with the SWNT, suggesting the interwall interactions between the in-plane modes of SWNT and BNNT. Moreover, the E2g mode of the BNNT in SWNT@BNNT appeared at 1370.3 ± 0.1 cm-1, which is undistinguishable for EL < 3 eV because of the overlap with the D band frequency. The assignment of the present Raman spectra was confirmed through the first-principles calculations.
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Affiliation(s)
| | - Nguyen Tuan Hung
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Wei-Liang Chen
- Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan
| | - Shuhui Wang
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Ming Liu
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Esko I Kauppinen
- Department of Applied Physics, Aalto University School of Science, Espoo 15100, FI-00076 Aalto, Finland
| | - Shigeo Maruyama
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Yu-Ming Chang
- Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan
| | - Riichiro Saito
- Department of Physics, National Taiwan Normal University, Taipei 11677, Taiwan
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
| | - Hsiang-Lin Liu
- Department of Physics, National Taiwan Normal University, Taipei 11677, Taiwan
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Chang YM, Pan YW, Chou YY, Yu WH, Tsai MC. A boy with a progressive neurologic decline harboring two coexisting mutations in KMT2D and VPS13D. Brain Dev 2023; 45:603-607. [PMID: 37599126 DOI: 10.1016/j.braindev.2023.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 06/25/2023] [Accepted: 08/05/2023] [Indexed: 08/22/2023]
Abstract
INTRODUCTION Kabuki syndrome (KS) and spinocerebellar ataxia (SCA) are both rare conditions with neurodevelopmental abnormalities. Approaching a patient with complex phenotypes and differentiating the role of mutations may be beneficial but challenging in predicting the disease prognosis. CASE PRESENTATION A boy presented with progressive ataxia, developmental regression, and myoclonus since 4 years of age. Additional features included growth hormone deficiency, excessive body hair, dysmorphic facies, hypoparathyroidism, and bilateral sensorineural hearing impairment. Brain magnetic resonance imaging depicted T2-weighted hyperintensities over bilateral globus pallidus, thalamus, subcortical white matter, and brainstem. The results of tandem mass spectrometry, mitochondrial deletion, and mitochondrial DNA sequencing were inconclusive. Whole-exome sequencing (WES) on genomic DNA obtained from peripheral blood cells revealed a known pathogenic variant at KMT2D gene (c.5993A > G, p.Tyr1998Cys) related to KS and two compound heterozygous, likely pathogenic variants at VPS13D gene (c.908G > A, p.Arg303Gln and c.8561T > G, p.Leu2854Arg) related to autosomal recessive SCA type 4 (SCAR4). DISCUSSION SCAR4 is mainly adult-onset, but a few pediatric cases have recently been reported with progressive gait instability and developmental delay. The VPS13D gene has been suggested to play a role in mitochondrial size, autophagy, and clearance, thus explaining the clinical and imaging phenotypes. CONCLUSION Our case showed a rare co-existence of KS and SCAR4, highlighting the utility of WES in atypical cases that a single-gene disease cannot fully explain.
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Affiliation(s)
- Yu-Ming Chang
- Department of Pediatrics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yu-Wen Pan
- Department of Pediatrics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yen-Yin Chou
- Department of Pediatrics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Department of Genomic Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Wen-Hao Yu
- Department of Pediatrics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Meng-Che Tsai
- Department of Pediatrics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Department of Genomic Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
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Fu JH, Min J, Chang CK, Tseng CC, Wang Q, Sugisaki H, Li C, Chang YM, Alnami I, Syong WR, Lin C, Fang F, Zhao L, Lo TH, Lai CS, Chiu WS, Jian ZS, Chang WH, Lu YJ, Shih K, Li LJ, Wan Y, Shi Y, Tung V. Oriented lateral growth of two-dimensional materials on c-plane sapphire. Nat Nanotechnol 2023; 18:1289-1294. [PMID: 37474684 DOI: 10.1038/s41565-023-01445-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 06/08/2023] [Indexed: 07/22/2023]
Abstract
Two-dimensional (2D) semiconducting transition metal dichalcogenides (TMDs) represent the ultimate thickness for scaling down channel materials. They provide a tantalizing solution to push the limit of semiconductor technology nodes in the sub-1 nm range. One key challenge with 2D semiconducting TMD channel materials is to achieve large-scale batch growth on insulating substrates of single crystals with spatial homogeneity and compelling electrical properties. Recent studies have claimed the epitaxy growth of wafer-scale, single-crystal 2D TMDs on a c-plane sapphire substrate with deliberately engineered off-cut angles. It has been postulated that exposed step edges break the energy degeneracy of nucleation and thus drive the seamless stitching of mono-oriented flakes. Here we show that a more dominant factor should be considered: in particular, the interaction of 2D TMD grains with the exposed oxygen-aluminium atomic plane establishes an energy-minimized 2D TMD-sapphire configuration. Reconstructing the surfaces of c-plane sapphire substrates to only a single type of atomic plane (plane symmetry) already guarantees the single-crystal epitaxy of monolayer TMDs without the aid of step edges. Electrical results evidence the structural uniformity of the monolayers. Our findings elucidate a long-standing question that curbs the wafer-scale batch epitaxy of 2D TMD single crystals-an important step towards using 2D materials for future electronics. Experiments extended to perovskite materials also support the argument that the interaction with sapphire atomic surfaces is more dominant than step-edge docking.
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Affiliation(s)
- Jui-Han Fu
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Jiacheng Min
- Department of Civil Engineering, The University of Hong Kong, Hong Kong, China
| | - Che-Kang Chang
- Department of Electrophysics, National Yang-Ming Chiao Tung University, Hsinchu, Taiwan
| | - Chien-Chih Tseng
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, Tokyo, Japan
- Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Qingxiao Wang
- Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Hayato Sugisaki
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Chenyang Li
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China
| | - Yu-Ming Chang
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China
| | - Ibrahim Alnami
- Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Wei-Ren Syong
- Research Centre for Applied Sciences, Academia Sinica, Taipei, Taiwan
| | - Ci Lin
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China
| | - Feier Fang
- College of Electronics and Information Engineering, Shenzhen University, Shenzhen, China
| | - Lv Zhao
- College of Electronics and Information Engineering, Shenzhen University, Shenzhen, China
| | - Tzu-Hsuan Lo
- Department of Electrophysics, National Yang-Ming Chiao Tung University, Hsinchu, Taiwan
| | - Chao-Sung Lai
- Department of Electronic Engineering, Chang Gung University, Taoyuan, Taiwan
| | - Wei-Sheng Chiu
- National Synchrotron Radiation Research Center, Hsinchu, Taiwan
| | - Zih-Siang Jian
- Department of Electrophysics, National Yang-Ming Chiao Tung University, Hsinchu, Taiwan
| | - Wen-Hao Chang
- Department of Electrophysics, National Yang-Ming Chiao Tung University, Hsinchu, Taiwan
- Research Centre for Applied Sciences, Academia Sinica, Taipei, Taiwan
| | - Yu-Jung Lu
- Research Centre for Applied Sciences, Academia Sinica, Taipei, Taiwan
| | - Kaimin Shih
- Department of Civil Engineering, The University of Hong Kong, Hong Kong, China
| | - Lain-Jong Li
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China.
| | - Yi Wan
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China.
| | - Yumeng Shi
- College of Electronics and Information Engineering, Shenzhen University, Shenzhen, China.
| | - Vincent Tung
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, Tokyo, Japan.
- Center for Green Technology of the Chang Gung University, Taoyuan, Taiwan.
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Chang YM, Wang YS, Chen HY. Controlling Superhydrophobicity on Complex Substrates Based on a Vapor-Phase Sublimation and Deposition Polymerization. ACS Appl Mater Interfaces 2023; 15:48754-48763. [PMID: 37793161 PMCID: PMC10592315 DOI: 10.1021/acsami.3c06684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 09/21/2023] [Indexed: 10/06/2023]
Abstract
The superhydrophobic properties of material surfaces have attracted significant research and practical development in a wide range of applications. In the present study, a superhydrophobic coating was fabricated using a vapor-phase sublimation and deposition process. This process offers several advantages, including a controllable and tunable superhydrophobic property, a dry and solvent-free process that uses well-defined water/ice templates during fabrication, and a coating technology that is applicable to various substrates, regardless of their dimensions or complex geometric configurations. The fabrication process exploits time-dependent condensation to produce ice templates with a controlled surface morphology and roughness. The templates are sacrificed via vapor sublimation, which results in mass transfer of water vapor out of the system. A second vapor source of a polymer precursor is then introduced to the system, and deposition occurs upon polymerization on the iced templates, replicating the same topologies from the iced templates. The continuation of the co-current sublimation and deposition processes finally renders permanent hierarchical structures of the polymer coatings that combine the native hydrophobic property of the polymer and the structured property by the sacrificed ice templates, achieving a level of superhydrophobicity that is tunable from 90° to 164°. The experiments demonstrated the use of [2,2]paracyclophanes as the starting materials for forming the superhydrophobic coatings of poly(p-xylylenes) on substrate surfaces. In comparison to conventional vapor deposition of poly(p-xylylenes), which resulted in dense thin-film coatings with only a moderate water contact angle of approximately 90°, the reported superhydrophobic coatings and fabrication process can achieve a high water contact angle of 164°. Demonstrations furthermore revealed that the proposed coatings are durable while maintaining superhydrophobicity on various substrates, including an intraocular lens and a cardiovascular stent, even against harsh treatment conditions and varied solution compositions used on the substrates.
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Affiliation(s)
- Yu-Ming Chang
- Department
of Chemical Engineering, National Taiwan
University, Taipei 10617, Taiwan
| | - Yun-Shan Wang
- Department
of Chemical Engineering, National Taiwan
University, Taipei 10617, Taiwan
| | - Hsien-Yeh Chen
- Department
of Chemical Engineering, National Taiwan
University, Taipei 10617, Taiwan
- Molecular
Imaging Center, National Taiwan University, Taipei 10617, Taiwan
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11
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Lee TL, Chang YM, Sung PS. Clinical Updates on Antiplatelet Therapy for Secondary Prevention in Acute Ischemic Stroke. Acta Neurol Taiwan 2023; 32(3):138-144. [PMID: 37674428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
Antiplatelet therapy is the first-line management for noncardioembolic transient ischemic attack (TIA) and acute ischemic stroke (IS). Herein, we review the safety and efficacy of antiplatelet therapies in patients with IS and TIA, primarily focusing on the acute stage. We discuss current antiplatelet monotherapy and the factors influencing efficacy and continuation rate according to clinical trial data. Aspirin remains the most commonly used first-line antiplatelet agent for preventing noncardioembolic stroke recurrence, and clopidogrel, cilostazol, and ticagrelor are feasible alternatives. Various short-term dual antiplatelet therapies (including clopidogrel-aspirin and ticagrelor-aspirin combination therapy) for minor stroke and high-risk TIA are also reviewed. For selected patients with specific stroke etiologies, short-term dual antiplatelet therapy with aspirin combined with clopidogrel or ticagrelor can significantly reduce the risk of stroke. However, insufficient evidence supports the benefits of triple antiplatelet therapy for recurrent noncardioembolic stroke prevention, and this treatment substantially increases the rate of bleeding complications. Keyword: antiplatelet therapy, acute ischemic stroke, secondary prevention, transient ischemic attack.
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Affiliation(s)
- Tsung-Lin Lee
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yu-Ming Chang
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Pi-Shan Sung
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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Ivanovic V, Broadhead K, Beck R, Chang YM, Paydar A, Biddle G, Hacein-Bey L, Qi L. Factors Associated With Neuroradiologic Diagnostic Errors at a Large Tertiary-Care Academic Medical Center: A Case-Control Study. AJR Am J Roentgenol 2023; 221:355-362. [PMID: 36988269 DOI: 10.2214/ajr.22.28925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
BACKGROUND. Numerous studies have explored factors associated with diagnostic errors in neuroradiology; however, large-scale multivariable analyses are lacking. OBJECTIVE. The purpose of this study was to evaluate associations of interpretation time, shift volume, care setting, day of week, and trainee participation with diagnostic errors by neuroradiologists at a large academic medical center. METHODS. This retrospective case-control study using a large tertiary-care academic medical center's neuroradiology quality assurance database evaluated CT and MRI examinations for which neuroradiologists had assigned RADPEER scores. The database was searched from January 2014 through March 2020 for examinations without (RADPEER score of 1) or with (RADPEER scores of 2a, 2b, 3a, 3b, or 4) diagnostic error. For each examination with error, two examinations without error were randomly selected (unless only one examination could be identified) and matched by interpreting radiologist and examination type to form case and control groups. Marginal mixed-effects logistic regression models were used to assess associations of diagnostic error with interpretation time (number of minutes since the immediately preceding report's completion), shift volume (number of examinations interpreted during the shift), emergency/inpatient setting, weekend interpretation, and trainee participation in interpretation. RESULTS. The case group included 564 examinations in 564 patients (mean age, 50.0 ± 25.0 [SD] years; 309 men, 255 women); the control group included 1019 examinations in 1019 patients (mean age, 52.5 ± 23.2 years; 540 men, 479 women). In the case versus control group, mean interpretation time was 16.3 ± 17.2 [SD] minutes versus 14.8 ± 16.7 minutes; mean shift volume was 50.0 ± 22.1 [SD] examinations versus 45.4 ± 22.9 examinations. In univariable models, diagnostic error was associated with shift volume (OR = 1.22, p < .001) and weekend interpretation (OR = 1.60, p < .001) but not interpretation time, emergency/inpatient setting, or trainee participation (p > .05). However, in multivariable models, diagnostic error was independently associated with interpretation time (OR = 1.18, p = .003), shift volume (OR = 1.27, p < .001), and weekend interpretation (OR = 1.69, p = .02). In subanalysis, diagnostic error showed independent associations on weekdays with interpretation time (OR = 1.18, p = .003) and shift volume (OR = 1.27, p < .001); such associations were not observed on weekends (interpretation time: p = .62; shift volume: p = .58). CONCLUSION. Diagnostic errors in neuroradiology were associated with longer interpretation times, higher shift volumes, and weekend interpretation. CLINICAL IMPACT. These findings should be considered when designing work-flow-related interventions seeking to reduce neuroradiology interpretation errors.
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Affiliation(s)
- Vladimir Ivanovic
- Department of Radiology, Section of Neuroradiology, Medical College of Wisconsin, 8701 Watertown Plank Rd, Milwaukee, WI 53226
| | - Kenneth Broadhead
- Department of Statistics, Colorado State University, Fort Collins, CO
| | - Ryan Beck
- Department of Radiology, Section of Neuroradiology, Medical College of Wisconsin, 8701 Watertown Plank Rd, Milwaukee, WI 53226
| | - Yu-Ming Chang
- Department of Radiology, Section of Neuroradiology, Beth Israel Deaconess Medical Center, Boston, MA
| | - Alireza Paydar
- Department of Radiology, Section of Neuroradiology, University of California, Davis Medical Center, Sacramento, CA
| | - Garrick Biddle
- Department of Radiology, Section of Neuroradiology, University of California, Davis Medical Center, Sacramento, CA
| | - Lotfi Hacein-Bey
- Department of Radiology, Section of Neuroradiology, University of California, Davis Medical Center, Sacramento, CA
| | - Lihong Qi
- Department of Public Health Sciences, School of Medicine, University of California, Davis, Davis, CA
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Ivanovic V, Paydar A, Chang YM, Broadhead K, Smullen D, Klein A, Hacein-Bey L. Impact of Shift Volume on Neuroradiology Diagnostic Errors at a Large Tertiary Academic Center. Acad Radiol 2023; 30:1584-1588. [PMID: 36180325 DOI: 10.1016/j.acra.2022.08.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 08/20/2022] [Accepted: 08/30/2022] [Indexed: 11/01/2022]
Abstract
BACKGROUND AND PURPOSE Medical errors can result in significant morbidity and mortality. The goal of our study is to evaluate correlation between shift volume and errors made by attending neuroradiologists at an academic medical center, using a large data set. MATERIALS AND METHODS CT and MRI reports from our Neuroradiology Quality Assurance database (years 2014 - 2020) were searched for attending physician errors. Data were collected on shift volume, category of missed findings, error type, interpretation setting, exam type, clinical significance. RESULTS 654 reports contained diagnostic error. There was a significant difference between mean volume of interpreted studies on shifts when an error was made compared with shifts in which no error was documented (46.58 (SD=22.37) vs 34.09 (SD=18.60), p<0.00001); and between shifts when perceptual error was made compared with shifts when interpretive errors were made (49.50 (SD=21.9) vs 43.26 (SD=21.75), p=0.0094). 59.6% of errors occurred in the emergency/inpatient setting, 84% were perceptual and 91.1% clinically significant. Categorical distribution of errors was: vascular 25.8%, brain 23.4%, skull base 13.8%, spine 12.4%, head/neck 11.3%, fractures 10.2%, other 3.1%. Errors were detected most often on brain MRI (25.4%), head CT (18.7%), head/neck CTA (13.8%), spine MRI (13.7%). CONCLUSION Errors were associated with higher volume shifts, were primarily perceptual and clinically significant. We need National guidelines establishing a range of what is a safe number of interpreted cross-sectional studies per day.
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Affiliation(s)
- Vladimir Ivanovic
- Department of Radiology, Section of Neuroradiology, Medical College of Wisconsin, Milwaukee, WI.
| | - Alireza Paydar
- Department of Radiology, Section of Neuroradiology, University of California Davis Medical Center, Sacramento, CA
| | - Yu-Ming Chang
- Department of Radiology, Section of Neuroradiology, Beth Israel Deaconess Medical Center, Harvard School of Medicine, Boston, Massachusetts
| | - Kenneth Broadhead
- Department of statistics, School of Medicine, University of California Davis, Davis, CA
| | - David Smullen
- Department of Radiology, Section of Neuroradiology, Medical College of Wisconsin, Milwaukee, WI
| | - Andrew Klein
- Department of Radiology, Section of Neuroradiology, Medical College of Wisconsin, Milwaukee, WI
| | - Lotfi Hacein-Bey
- Department of Radiology, Section of Neuroradiology, University of California Davis Medical Center, Sacramento, CA
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Chang YM, Chen CH, Wang JN, Cheng CM, Tu YF, Shen CF. Case report: Distinct neurologic manifestation and cytokine profile of a child with COVID-19-associated acute fulminant encephalitis. Front Med (Lausanne) 2023; 10:1209656. [PMID: 37384050 PMCID: PMC10299828 DOI: 10.3389/fmed.2023.1209656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 05/23/2023] [Indexed: 06/30/2023] Open
Abstract
The neurologic manifestations of coronavirus disease 2019 (COVID-19) may range from mild symptoms such as headache or confusion to profound encephalopathy with variable outcomes and sequelae. Here, we reported a case of fatal COVID-19-associated encephalitis with acute fulminant cerebral edema, presenting first with visual hallucination and then a rapid progression into comatose status in a few hours. Serial brain computed tomography depicted cerebral edematous changes from bilateral ventral temporal lobe to the whole brain leading to brain herniation. Multiple cytokines in serum and cerebrospinal fluid (CSF) were increased, with a more prominent rise in the CSF. Therefore, we postulated a hypothesis regarding the mechanism of this fulminant encephalitis that the SARS-CoV-2 virus attacked ventral temporal lobes initially, triggered a severe cytokine storm, and then led to subsequent disruption of the blood-brain barrier, diffuse brain edema, and brain herniation. The trend of cytokine profiles over time may aid in diagnosing and evaluating the severity and prognosis of COVID-19-associated encephalitis.
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Affiliation(s)
- Yu-Ming Chang
- Department of Pediatrics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Cheng-Han Chen
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, Taiwan
- Department of Emergency Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Jieh-Neng Wang
- Department of Pediatrics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chao-Min Cheng
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, Taiwan
| | - Yi-Fang Tu
- Department of Pediatrics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ching-Fen Shen
- Department of Pediatrics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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15
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Deng L, Liu S, Liu D, Chang YM, Li L, Li C, Sun Y, Hu F, Chen HY, Pan H, Peng S. Activity-Stability Balance: The Role of Electron Supply Effect of Support in Acidic Oxygen Evolution. Small 2023:e2302238. [PMID: 37191328 DOI: 10.1002/smll.202302238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/11/2023] [Indexed: 05/17/2023]
Abstract
Developing efficient and durable electrocatalysts for the oxygen evolution reaction (OER) in proton exchange membrane (PEM) electrolyzers represents a significant challenge. Herein, the cobalt-ruthenium oxide nano-heterostructures are successfully synthesized on carbon cloth (CoOx /RuOx -CC) for acidic OER through a simple and fast solution combustion strategy. The rapid oxidation process endows CoOx /RuOx -CC with abundant interfacial sites and defect structures, which enhances the number of active sites and the charge transfer at the electrolyte-catalyst interface, promoting the OER kinetics. Moreover, the electron supply effect of the CoOx support allows electrons to transfer from Co to Ru sites during the OER process, which is beneficial to alleviate the ion leaching and over-oxidation of Ru sites, improving the catalyst activity and stability. As a self-supported electrocatalyst, CoOx /RuOx -CC displays an ultralow overpotential of 180 mV at 10 mA cm-2 for OER. Notably, the PEM electrolyzer using CoOx /RuOx -CC as the anode can be operated at 100 mA cm-2 stably for 100 h. Mechanistic analysis shows that the strong catalyst-support interaction is beneficial to redistribute the electronic structure of RuO bond to weaken its covalency, thereby optimizing the binding energy of OER intermediates and lowering the reaction energy barrier.
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Affiliation(s)
- Liming Deng
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
| | - Shuyi Liu
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
| | - Di Liu
- Institute of Applied Physics and Materials Engineering, University of Macau, Zhuhai, Macao SAR, 999078, China
| | - Yu-Ming Chang
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Linlin Li
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
| | - Chunsheng Li
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou, 215009, China
- Key Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of China, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Yan Sun
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou, 215009, China
- Key Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of China, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Feng Hu
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
| | - Han-Yi Chen
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Hui Pan
- Institute of Applied Physics and Materials Engineering, University of Macau, Zhuhai, Macao SAR, 999078, China
| | - Shengjie Peng
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
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Alarcon P, Strang CL, Chang YM, Tak M. Economic evaluation of antimicrobial usage surveillance in livestock. REV SCI TECH OIE 2023; 42:42-51. [PMID: 37232320 DOI: 10.20506/rst.42.3347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
There is increased pressure by governments and industry to develop national surveillance programmes to evaluate antimicrobial usage (AMU) in animals. This article presents a methodological approach to cost-effectiveness analysis of such programmes. Seven objectives are proposed for AMU surveillance in animals: quantifying use, finding trends, detecting hotspots, identifying risk factors, encouraging research, evaluating the impact of policies and diseases, and demonstrating compliance with regulations. Achieving these objectives would assist in making decisions about potential interventions, help to generate trust, incentivise the reduction of AMU and decrease the risk of antimicrobial resistance. The cost-effectiveness of each objective can be found by dividing the cost of the programme by the performance indicators of the surveillance required to meet the objective concerned. The precision and accuracy of surveillance outputs are suggested here as useful performance indicators. Precision depends on the level of surveillance coverage (SC) and surveillance representativeness (SR). Accuracy is influenced by the quality of farm records and SR. The authors argue that there is an increase in marginal cost for each unit increase of SC, SR and data quality. This is caused by the increasing difficulty of recruiting farmers due to potential barriers such as staff capacity, capital availability, computing literacy and availability, and geographical differences, among other factors. A simulation model was conducted to test the approach, using the quantification of AMU as the primary objective, and to provide evidence of the application of the law of diminishing returns. Cost-effectiveness analysis can be used to support decisions on the level of coverage, representativeness and data quality required in such AMU programmes.
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Chang YM, Lee TL, Su HC, Chien CY, Lin TY, Lin SH, Chen CH, Sung PS. The Association between Ankle-Brachial Index/Pulse Wave Velocity and Cerebral Large and Small Vessel Diseases in Stroke Patients. Diagnostics (Basel) 2023; 13:diagnostics13081455. [PMID: 37189557 DOI: 10.3390/diagnostics13081455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 04/01/2023] [Accepted: 04/08/2023] [Indexed: 05/17/2023] Open
Abstract
(1) Background: The study investigated whether the ankle-brachial index (ABI) and pulse wave velocity (baPWV) could reflect the severity of small vessel disease (SVD) and large artery atherosclerosis (LAA). (2) Methods: A total of 956 consecutive patients diagnosed with ischemic stroke were prospectively enrolled from July 2016 to December 2017. SVD severity and LAA stenosis grades were evaluated via magnetic resonance imaging and carotid duplex ultrasonography. Correlation coefficients were calculated between the ABI/baPWV and measurement values. Multinomial logistic regression analysis was performed to determine predictive potential. (3) Results: Among the 820 patients included in the final analysis, the stenosis grade of extracranial and intracranial vessels was inversely correlated with the ABI (p < 0.001, respectively) and positively correlated with the baPWV (p < 0.001 and p = 0.004, respectively). Abnormal ABI, not baPWV, independently predicted the presence of moderate (adjusted odds ratio, aOR: 2.18, 95% CI: 1.31-3.63) to severe (aOR: 5.59, 95% CI: 2.21-14.13) extracranial vessel stenosis and intracranial vessel stenosis (aOR: 1.89, 95% CI: 1.15-3.11). Neither the ABI nor baPWV was independently associated with SVD severity. (4) Conclusions: ABI is better than baPWV in screening for and identifying the existence of cerebral large vessel disease, but neither test is a good predictor of cerebral SVD severity.
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Affiliation(s)
- Yu-Ming Chang
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Tsung-Lin Lee
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Hui-Chen Su
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Chung-Yao Chien
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Tien-Yu Lin
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Sheng-Hsiang Lin
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
- Department of Public Health, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
- Biostatistics Consulting Center, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Chih-Hung Chen
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Pi-Shan Sung
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
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Ebrahimzadeh SA, Du E, Ivanovic V, Bhadelia RA, Hacein-Bey L, Selim M, Chang YM. Comparing the benefit of ASPECTS on maximum intensity projection images of computed tomography angiography to source images and noncontract computed tomography in predicting infarct volume and collaterals extent. J Stroke Cerebrovasc Dis 2023; 32:107091. [PMID: 37068326 DOI: 10.1016/j.jstrokecerebrovasdis.2023.107091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 03/18/2023] [Accepted: 03/20/2023] [Indexed: 04/19/2023] Open
Abstract
INTRODUCTION In acute ischemic strokes (AIS), the Alberta Stroke Program Early Computed Tomography Score (ASPECTS) and CT perfusion (CTP) are commonly used to determine mechanical thrombectomy eligibility. Prior work suggests that CTA source image (CTA-SI) ASPECTS (CTAasp) and a newly described CTA maximum intensity projection (CTA-MIP) ASPECTS (MIPasp) better predict the final infarct core. Our goal was to compare MIPasp to CTAasp and non-contrast CT ASPECTS (NCCTasp) for predicting ischemic core and collaterals established by CTP. METHODS AND MATERIALS A single institution, retrospective database for AIS due to internal carotid artery (ICA) or proximal middle cerebral artery (MCA) occlusions between January 2016 and February 2021 was reviewed. We rated ASPECTS on NCCT, CTA-SI, and CTA-MIP at baseline, then used the automated RAPID software to measure CTP ischemic core volume. The accuracy of each ASPECTS in predicting ischemic core volume (ICV) >70 cc and Hypoperfusion intensity ratio (HIR) >0.4 was compared using the receiver operating characteristic (ROC) curve. RESULTS 122/319 patients fulfilled the inclusion criteria. Area under the curve (AUC) for MIPasp was significantly higher than NCCTasp and CTAasp for predicting ICV >70 cc (0.95 vs. 0.89 and 0.95 vs. 0.92, P =0.03 and P = 0.04). For predicting HIR >0.4, AUC for MIPasp was significantly higher than NCCTasp and CTAasp (0.85 vs. 0.72 and 0.85 vs. 0.81, P < 0.001 and P < 0.01). CONCLUSION The predictive accuracy of detecting ischemic stroke with ICV >70cc and HIR >0.4 can be significantly improved using the MIPasp instead of CTAasp or NCCTasp.
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Affiliation(s)
- Seyed Amir Ebrahimzadeh
- Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, WCB90, 330 Brookline Ave, Boston, MA 02215, USA.
| | - Elizabeth Du
- Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, WCB90, 330 Brookline Ave, Boston, MA 02215, USA
| | - Vladimir Ivanovic
- Department of Radiology, Section of Neuroradiology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Rafeeque A Bhadelia
- Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, WCB90, 330 Brookline Ave, Boston, MA 02215, USA
| | - Lotfi Hacein-Bey
- Department of Radiology, University of California Davis Medical School of Medicine, Sacramento, CA, USA
| | - Magdy Selim
- Department of Neurology, Division of Cerebrovascular Diseases, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Yu-Ming Chang
- Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, WCB90, 330 Brookline Ave, Boston, MA 02215, USA
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Bhadelia RA, Chang YM, Oshinski JN, Loth F. Cerebrospinal Fluid Flow and Brain Motion in Chiari I Malformation: Past, Present, and Future. J Magn Reson Imaging 2023. [PMID: 37013364 DOI: 10.1002/jmri.28717] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 03/22/2023] [Accepted: 03/23/2023] [Indexed: 04/05/2023] Open
Abstract
Cranio-spinal volume and pressure changes associated with the cardiac-cycle and respiration are altered in Chiari I malformation (CMI) due to obstruction of cerebrospinal fluid (CSF) flow at the foramen magnum. With the introduction of motion-sensitive MRI sequences, it was envisioned that these could provide noninvasive information about volume-pressure dynamics at the cranio-cervical junction in CMI hitherto available only through invasive pressure measurements. Since the early 1990s, multiple studies have assessed CSF flow and brain motion in CMI. However, differences in design and varied approaches in the presentation of results and conclusions makes it difficult to fully comprehend the role of MR imaging of CSF flow and brain motion in CMI. In this review, a cohesive summary of the current status of MRI assessment of CSF flow and brain motion in CMI is presented. Simplified versions of the results and conclusions of previous studies are presented by dividing the studies in distinct topics: 1) comparing CSF flow and brain motion between healthy subjects (HS) and CMI patients (before and after surgery), 2) comparing CSF flow and brain motion to CMI severity and symptoms, and 3) comparing CSF flow and brain motion in CMI with and without syringomyelia. Finally, we will discuss our vision of the future directions of MR imaging in CMI patients. EVIDENCE LEVEL: 2. TECHNICAL EFFICACY: 5.
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Affiliation(s)
- Rafeeque A Bhadelia
- Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Yu-Ming Chang
- Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - John N Oshinski
- Radiology & Imaging Sciences and Biomedical Engineering, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Francis Loth
- Department of Mechanical and Industrial Engineering and Bioengineering Northeastern University, Boston, Massachusetts, USA
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20
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Jhen RN, Chang YM, Chen YL, Lee KF, Shiao CC. Does malnutrition really not disturb the physical function improvement following intradialytic exercise in hemodialysis patients? J Ren Nutr 2023:S1051-2276(23)00043-2. [PMID: 36965752 DOI: 10.1053/j.jrn.2023.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Accepted: 03/19/2023] [Indexed: 03/27/2023] Open
Affiliation(s)
- Rong-Na Jhen
- Division of Nephrology, Department of Internal Medicine, Camillian Saint Mary`s Hospital Luodong, Yilan, Taiwan
| | - Yu-Ming Chang
- Division of Nephrology, Department of Internal Medicine, Camillian Saint Mary`s Hospital Luodong, Yilan, Taiwan
| | - Yi-Ling Chen
- Department of Nursing, Camillian Saint Mary`s Hospital Luodong, Yilan, Taiwan
| | - Kun-Feng Lee
- Division of Nephrology, Department of Internal Medicine, Mennonite Christian Hospital, Hualien, Taiwan.
| | - Chih-Chung Shiao
- Division of Nephrology, Department of Internal Medicine, Camillian Saint Mary`s Hospital Luodong, Yilan, Taiwan; Saint Mary's Junior College of Medicine, Nursing and Management, Yilan, Taiwan.
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21
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Nagarajan G, Aruna A, Chang YM, Alkhamis YA, Mathew RT, Chang CF. Effects of Osmotic Stress on the mRNA Expression of prl, prlr, gr, gh, and ghr in the Pituitary and Osmoregulatory Organs of Black Porgy, Acanthopagrus schlegelii. Int J Mol Sci 2023; 24:ijms24065318. [PMID: 36982391 PMCID: PMC10049143 DOI: 10.3390/ijms24065318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 03/05/2023] [Accepted: 03/06/2023] [Indexed: 03/12/2023] Open
Abstract
In euryhaline teleost black porgy, Acanthopagrus schlegelii, the glucocorticoid receptor (gr), growth hormone receptor (ghr), prolactin (prl)-receptor (prlr), and sodium–potassium ATPase alpha subunit (α-nka) play essential physiological roles in the osmoregulatory organs, including the gill, kidney, and intestine, during osmotic stress. The present study aimed to investigate the impact of pituitary hormones and hormone receptors in the osmoregulatory organs during the transfer from freshwater (FW) to 4 ppt and seawater (SW) and vice versa in black porgy. Quantitative real-time PCR (Q-PCR) was carried out to analyze the transcript levels during salinity and osmoregulatory stress. Increased salinity resulted in decreased transcripts of prl in the pituitary, α-nka and prlr in the gill, and α-nka and prlr in the kidney. Increased salinity caused the increased transcripts of gr in the gill and α-nka in the intestine. Decreased salinity resulted in increased pituitary prl, and increases in α-nka and prlr in the gill, and α-nka, prlr, and ghr in the kidney. Taken together, the present results highlight the involvement of prl, prlr, gh, and ghr in the osmoregulation and osmotic stress in the osmoregulatory organs (gill, intestine, and kidney). Pituitary prl, and gill and intestine prlr are consistently downregulated during the increased salinity stress and vice versa. It is suggested that prl plays a more significant role in osmoregulation than gh in the euryhaline black porgy. Furthermore, the present results highlighted that the gill gr transcript’s role was solely to balance the homeostasis in the black porgy during salinity stress.
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Affiliation(s)
- Ganesan Nagarajan
- Department of Basic Sciences, PYD, King Faisal University, Al Ahsa 31982, Saudi Arabia
- Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung 20224, Taiwan
- Department of Aquaculture, National Taiwan Ocean University, Keelung 20224, Taiwan
- Correspondence: (G.N.); (C.-F.C.); Tel.: +966-0135896810 (G.N.); +886-2-2462-2192 (ext. 5209) (C.-F.C.)
| | - Adimoolam Aruna
- Department of Aquaculture, National Taiwan Ocean University, Keelung 20224, Taiwan
| | - Yu-Ming Chang
- Department of Aquaculture, National Taiwan Ocean University, Keelung 20224, Taiwan
| | - Yousef Ahmed Alkhamis
- Animal and Fish Production Department, College of Agricultural and Food Sciences, King Faisal University, Hofuf-420, Al-Asha 31982, Saudi Arabia
- Fish Resources Research Center, King Faisal University, Hofuf-420, Al-Asha 31982, Saudi Arabia
| | - Roshmon Thomas Mathew
- Fish Resources Research Center, King Faisal University, Hofuf-420, Al-Asha 31982, Saudi Arabia
| | - Ching-Fong Chang
- Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung 20224, Taiwan
- Department of Aquaculture, National Taiwan Ocean University, Keelung 20224, Taiwan
- Correspondence: (G.N.); (C.-F.C.); Tel.: +966-0135896810 (G.N.); +886-2-2462-2192 (ext. 5209) (C.-F.C.)
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22
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Bandara Y, Priestnall SL, Chang YM, Kathrani A. Outcome of chronic inflammatory enteropathy in cats: 65 cases (2011-2021). J Small Anim Pract 2023; 64:121-129. [PMID: 36321188 DOI: 10.1111/jsap.13569] [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: 06/30/2022] [Revised: 09/09/2022] [Accepted: 09/23/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVES Feline chronic inflammatory enteropathy is an idiopathic disease with limited information on variables that might affect treatment outcome and survival. The aim of this study was to determine if clinicopathological variables were associated with death due to gastrointestinal disease in cats with chronic inflammatory enteropathy. MATERIALS AND METHODS Three medical records databases were retrospectively searched for cats diagnosed with chronic inflammatory enteropathy at the Royal Veterinary College between June 2008 and November 2021. Intestinal biopsy specimens of eligible cases were re-reviewed by one board-certified veterinary pathologist. Outcome information was obtained by contact with the referring veterinary surgeon. Two univariable binary logistic regression models and a Fisher's exact test were performed to assess the association between the outcome of death due to gastrointestinal disease or its short-term survival (≤ versus >1 year) with clinicopathological variables and the attainment of clinical remission. RESULTS Sixty-five cats diagnosed with chronic inflammatory enteropathy between September 2011 and August 2021 were included in the study with follow-up information available for 54 cats (83%). Of these 54 cats, 20 (37%) were euthanised due to gastrointestinal disease (median 129.5 days; range 8 to 2970 days). Twenty-five (46%) cats were alive and in clinical remission (median 916 days; range 78 to 2113 days) with 16 (64%) diagnosed with food-responsive enteropathy. Attaining clinical remission reduced the likelihood of subsequent death due to gastrointestinal disease. CLINICAL SIGNIFICANCE Measured physical and laboratory variables at the time of histopathological diagnosis of chronic inflammatory enteropathy were not predictors of death. Alternative diagnostic measures are required to definitively investigate outcome and survival in cats with chronic inflammatory enteropathy.
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Affiliation(s)
- Y Bandara
- Royal Veterinary College, University of London, London, UK
| | - S L Priestnall
- Royal Veterinary College, University of London, London, UK
| | - Y M Chang
- Royal Veterinary College, University of London, London, UK
| | - A Kathrani
- Royal Veterinary College, University of London, London, UK
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23
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Hsieh MT, Liu CH, Lin SH, Lin PY, Chang YM, Wang CM, Chen CH, Sung PS. Recurrent Ischemic Stroke and Cardiovascular Outcomes in Patients With Atrial Fibrillation With Ischemic Stroke Despite Direct Oral Anticoagulants. Stroke 2023; 54:e145-e146. [PMID: 36852688 DOI: 10.1161/strokeaha.122.041197] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Affiliation(s)
- Meng-Tsang Hsieh
- Stroke Center and Department of Neurology, E-Da Hospital, School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan (M.-T.H.).,Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan (M.-T.H., S.-H.L.)
| | - Chi-Hung Liu
- Department of Neurology, Chang Gung Memorial Hospital, Linkou Branch, and College of Medicine, Chang Gung University, Taoyuan, Taiwan (C.-H.L.)
| | - Sheng-Hsiang Lin
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan (M.-T.H., S.-H.L.)
| | - Po-Yu Lin
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan (P.-Y.L., Y.-M.C., C.-M.W., C.-H.C., P.-S.S.)
| | - Yu-Ming Chang
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan (P.-Y.L., Y.-M.C., C.-M.W., C.-H.C., P.-S.S.)
| | - Chun-Min Wang
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan (P.-Y.L., Y.-M.C., C.-M.W., C.-H.C., P.-S.S.)
| | - Chih-Hung Chen
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan (P.-Y.L., Y.-M.C., C.-M.W., C.-H.C., P.-S.S.)
| | - Pi-Shan Sung
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan (P.-Y.L., Y.-M.C., C.-M.W., C.-H.C., P.-S.S.)
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24
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Su YH, Chen WL, Byun HR, Zhang YF, Zhuang MR, Lin YC, Chang CK, Wang PY, Lin CC, Lin KI, Liu HK, Lee MK, Jang JI, Chang YM, Hsu KF. Ba 3.5Cu 7.55In 1.15Se 9: A Wide-Bandgap Copper Indium Selenide Reveals Strong Luminescence and Third-Harmonic Generation. Inorg Chem 2023; 62:1570-1579. [PMID: 36656719 DOI: 10.1021/acs.inorgchem.2c03789] [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: 01/20/2023]
Abstract
A new copper indium selenide, Ba3.5Cu7.55In1.15Se9, was synthesized by the KBr flux reaction at 800 °C. The compound crystallizes with orthorhombic Pnma, a = 46.1700(12) Å, b = 4.26710(10) Å, c = 19.8125(5) Å, and Z = 8. The structural framework mainly consists of four sites of cubane-type defective M4Se3 (M = Cu, Cu/In) units with disordered Cu+/In3+ ions present at the part corner of each unit. The single crystal emits intense photoluminescence at 657 nm with a relative quantum yield (RQY) 0.2 times that of rhodamine 6G powder. The compound belongs to a direct band gap at 1.91 eV, analyzed by Tauc's plot, and the energy is close to the PL position. The Hall effect measurement on a pressed pellet reveals an n-type conductivity with a carrier concentration of 3.358 × 1017 cm-3 and a mobility of 24.331 cm2 V-1 s-1. Furthermore, the compound produces a strong nonlinear third-harmonic generation (THG), with an χS(3) value of 1.3 × 105 pm2/V2 comparable to 1.6 × 105 pm2/V2 for AgGaSe2 measured at 800 nm.
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Affiliation(s)
- Yu-Hsuan Su
- Department of Chemistry, National Cheng Kung University, Tainan70101, Taiwan
| | - Wei-Liang Chen
- Center for Condensed Matter Sciences, National Taiwan University, Taipei10617, Taiwan
| | - Hye Ryung Byun
- Department of Physics, Sogang University, Seoul04107, South Korea
| | - Yu-Fu Zhang
- Department of Chemistry, National Cheng Kung University, Tainan70101, Taiwan
| | - Min-Rui Zhuang
- Department of Chemistry, National Cheng Kung University, Tainan70101, Taiwan
| | - Yu-Cih Lin
- Department of Chemistry, National Cheng Kung University, Tainan70101, Taiwan
| | - Chung-Kai Chang
- National Synchrotron Radiation Research Center, Hsinchu30076, Taiwan
| | - Po-Yuan Wang
- Department of Chemistry, National Cheng Kung University, Tainan70101, Taiwan
| | - Che-Cheng Lin
- Department of Chemistry, National Cheng Kung University, Tainan70101, Taiwan
| | - Kuang-I Lin
- Core Facility Center, National Cheng Kung University, Tainan70101, Taiwan
| | - Hsin-Kuan Liu
- Core Facility Center, National Cheng Kung University, Tainan70101, Taiwan
| | - Min-Kai Lee
- Core Facility Center, National Cheng Kung University, Tainan70101, Taiwan
| | - Joon I Jang
- Department of Physics, Sogang University, Seoul04107, South Korea
| | - Yu-Ming Chang
- Center for Condensed Matter Sciences, National Taiwan University, Taipei10617, Taiwan
| | - Kuei-Fang Hsu
- Department of Chemistry, National Cheng Kung University, Tainan70101, Taiwan
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Chang HW, Chen CL, Chen YH, Chang YM, Liu FJ, Tsai YC. Electrochemical Organophosphorus Pesticide Detection Using Nanostructured Gold-Modified Electrodes. Sensors (Basel) 2022; 22:9938. [PMID: 36560305 PMCID: PMC9787336 DOI: 10.3390/s22249938] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/13/2022] [Accepted: 12/14/2022] [Indexed: 06/17/2023]
Abstract
In this study, nanostructured gold was successfully prepared on a bare Au electrode using the electrochemical deposition method. Nanostructured gold provided more exposed active sites to facilitate the ion and electron transfer during the electrocatalytic reaction of organophosphorus pesticide (methyl parathion). The morphological and structural characterization of nanostructured gold was conducted using field-emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD), which was further carried out to evaluate the electrocatalytic activity towards methyl parathion sensing. The electrochemical performance of nanostructured gold was investigated by electrochemical measurements (cyclic voltammetry (CV) and differential pulse voltammetry (DPV)). The proposed nanostructured gold-modified electrode exhibited prominent electrochemical methyl parathion sensing performance (including two linear concentration ranges from 0.01 to 0.5 ppm (R2 = 0.993) and from 0.5 to 4 ppm (R2 = 0.996), limit of detection of 5.9 ppb, excellent selectivity and stability), and excellent capability in determination of pesticide residue in real fruit and vegetable samples (bok choy and strawberry). The study demonstrated that the presented approach to fabricate a nanostructured gold-modified electrode could be practically applied to detect pesticide residue in agricultural products via integrating the electrochemical and gas chromatography coupled with mass spectrometry (GC/MS-MS) analysis.
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Affiliation(s)
- Han-Wei Chang
- Department of Chemical Engineering, National United University, Miaoli 360302, Taiwan
- Pesticide Analysis Center, National United University, Miaoli 360302, Taiwan
| | - Chien-Lin Chen
- Department of Chemical Engineering, National Chung Hsing University, Taichung 40227, Taiwan
| | - Yan-Hua Chen
- Department of Chemical Engineering, National United University, Miaoli 360302, Taiwan
- Pesticide Analysis Center, National United University, Miaoli 360302, Taiwan
| | - Yu-Ming Chang
- Department of Chemical Engineering, National United University, Miaoli 360302, Taiwan
- Pesticide Analysis Center, National United University, Miaoli 360302, Taiwan
| | - Feng-Jiin Liu
- Department of Chemical Engineering, National United University, Miaoli 360302, Taiwan
- Pesticide Analysis Center, National United University, Miaoli 360302, Taiwan
| | - Yu-Chen Tsai
- Department of Chemical Engineering, National Chung Hsing University, Taichung 40227, Taiwan
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Chang YM, Xiao JQ, Christy J, Wu CY, Huang CW, Wu TY, Chiang YC, Lin TH, Chen HY. Ice-templated synthesis of multicomponent porous coatings via vapour sublimation and deposition polymerization. Mater Today Bio 2022; 16:100403. [PMID: 36090608 PMCID: PMC9449663 DOI: 10.1016/j.mtbio.2022.100403] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 08/04/2022] [Accepted: 08/16/2022] [Indexed: 11/26/2022] Open
Abstract
A multicomponent vapour-deposited porous (MVP) coating with combined physical and biochemical properties was fabricated based on a chemical vapour sublimation and deposition process. Multiple components are used based on their natural thermodynamic properties, being volatile and/or nonvolatile, resulting in the sublimation of water vapour (from an iced template), and a simultaneous deposition process of poly-p-xylylene occurs upon radical polymerization into a disordered structure, forming porous coatings of MVP on various substrates. In terms of physical properties, the coating technology exhibits adjustable hydrophobicity by tuning the surface morphology by timed control of the sublimation of the iced template layer from a substrate. However, by using a nonvolatile solution during fabrication, an impregnation process of the deposited poly-p-xylylene on such a solution with tuning contact angles produces an MVP coating with a customizable elastic modulus based on deformation-elasticity theory. Moreover, patterning physical structures with adjustable pore size and/or porosity of the coatings, as well as modulation and compartmentalization to introduce necessary boundaries of microstructures within one MVP coating layer, can be achieved during the proposed fabrication process. Finally, with a combination of defined solutions comprised of both volatile and nonvolatile multicomponents, including functional biomolecules, growth factor proteins, and living cells, the fabrication of the resultant MVP coating serves devised purposes exhibiting a variety of biological functions demonstrated with versatility for cell proliferation, osteogenesis, adipogenesis, odontogenesis, spheroid growth of stem cells, and a complex coculture system towards angiogenesis. Multicomponent porous coating technology is produced based on vapour sublimation and deposition upon radical polymerization that overturns conventional vapour-deposited coatings, resulting in only dense thin films, and in addition, the versatility of adjusting coating physical and chemical properties by exploiting the volatility mechanism of iced solution templates and accommodation of solute substances during the fabrication process. The MVP coating and the proposed fabrication technique represent a simple approach to provide a prospective interface coating layer for materials science and are attractive for unlimited applications.
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Chen TY, Thang HV, Yi TY, Huang SC, Lin CC, Chang YM, Chen PL, Lin MH, Lee JF, Chen HYT, Hu CC, Chen HY. Operando X-ray Studies of Ni-Containing Heteropolyvanadate Electrode for High-Energy Lithium-Ion Storage Applications. ACS Appl Mater Interfaces 2022; 14:52035-52045. [PMID: 36346965 DOI: 10.1021/acsami.2c16777] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Ni-containing heteropolyvanadate, Na6[NiV14O40], was synthesized for the first time to be applied in high-energy lithium storage applications as a negative electrode material. Na6[NiV14O40] can be prepared via a facile solution process that is suitable for low-cost mass production. The as-prepared electrode provided a high capacity of approximately 700 mAh g-1 without degradation for 400 cycles, indicating excellent cycling stability. The mechanism of charge storage was investigated using operando X-ray absorption spectroscopy (XAS), X-ray diffraction (XRD), transition X-ray microscopy (TXM), and density functional theory (DFT) calculations. The results showed that V5+ was reduced to V2+ during lithiation, indicating that Na6[NiV14O40] is an insertion-type material. In addition, Na6[NiV14O40] maintained its amorphous structure with negligible volume expansion/contraction during cycling. Employed as the negative electrode in a lithium-ion battery (LIB), the Na6[NiV14O40]//LiFePO4 full cell had a high energy density of 300 W h kg-1. When applied in a lithium-ion capacitor, the Na6[NiV14O40]//expanded mesocarbon microbead full cell displayed energy densities of 218.5 and 47.9 W h kg-1 at power densities of 175.7 and 7774.2 W kg-1, respectively. These findings reveal that the negative electrode material Na6[NiV14O40] is a promising candidate for Li-ion storage applications.
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Affiliation(s)
- Tsung-Yi Chen
- Department of Materials Science and Engineering, National Tsing Hua University, 101, Sec. 2, Kuang-Fu Road, Hsinchu300044, Taiwan
- High Entropy Materials Center, 101, Sec. 2, Kuang-Fu Road, Hsinchu300044, Taiwan
| | - Ho Viet Thang
- The University of Da-Nang, University of Science and Technology, 54 Nguyen Luong Bang, Da Nang550000, Vietnam
| | - Tien-Yu Yi
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu300044, Taiwan
| | - Shao-Chu Huang
- Department of Materials Science and Engineering, National Tsing Hua University, 101, Sec. 2, Kuang-Fu Road, Hsinchu300044, Taiwan
| | - Chia-Ching Lin
- Department of Materials Science and Engineering, National Tsing Hua University, 101, Sec. 2, Kuang-Fu Road, Hsinchu300044, Taiwan
| | - Yu-Ming Chang
- Department of Materials Science and Engineering, National Tsing Hua University, 101, Sec. 2, Kuang-Fu Road, Hsinchu300044, Taiwan
| | - Pei-Lin Chen
- Instrumentation Center, National Tsing Hua University, Hsinchu300044, Taiwan
| | - Ming-Hsien Lin
- Department of Chemical and Materials Engineering, Chung Cheng Institute of Technology, National Defense University, Tashi, Taoyuan33551, Taiwan
| | - Jyh-Fu Lee
- National Synchrotron Radiation Research Center, Hsinchu30076, Taiwan
| | - Hsin-Yi Tiffany Chen
- Department of Engineering and System Science, National Tsing Hua University, Hsinchu300044, Taiwan
- College of Semiconductor Research, National Tsing Hua University, Hsinchu300044, Taiwan
| | - Chi-Chang Hu
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu300044, Taiwan
| | - Han-Yi Chen
- Department of Materials Science and Engineering, National Tsing Hua University, 101, Sec. 2, Kuang-Fu Road, Hsinchu300044, Taiwan
- High Entropy Materials Center, 101, Sec. 2, Kuang-Fu Road, Hsinchu300044, Taiwan
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28
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Liao JN, Chen WL, Lo CY, Lai MH, Tsai HL, Chang YM. Nondestructive circadian profiling of starch content in fresh intact Arabidopsis leaf with two-photon fluorescence and second-harmonic generation imaging. Sci Rep 2022; 12:16525. [PMID: 36192622 PMCID: PMC9530172 DOI: 10.1038/s41598-022-20618-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 09/15/2022] [Indexed: 12/03/2022] Open
Abstract
Plant chloroplasts conduct photosynthesis to convert solar energy into sugars for the carbon source essential for cell living and growth during the day. One fraction of photosynthetic products is stored in chloroplasts by forming starch granules to continue the provision of carbon energy during the night. Currently, profiling the starch temporal pattern requires either: (i) sacrificing the leaves, or (ii) generating transgenic plants at the risk of changing the metabolisms by incorporating a genetically modified granule-bound starch synthase (GBSS). In this paper, we demonstrated a nondestructive method using two-photon fluorescence (TPF) and second-harmonic generation (SHG) imaging to quantify starch granules within chloroplasts of fresh intact leaves across a day-night cycle. We did so using two Arabidopsis lines having normal and excess starch contents: wild-type (Columbia-0) and starch excess 1 (sex1). The starch granules were visualized by SHG imaging, while the chloroplasts in mesophyll cells were visualized by TPF imaging. Our results provided micron scale spatial resolution of starch distribution within leaves and showed starch circadian patterns consistent with those profiled by enzymatic assays in previous studies. We demonstrated that TPF-SHG imaging is a potential tool for revealing the real-time heterogeneity of starch circadian rhythm in leaf cells, without the need for destructive sample preparation.
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Affiliation(s)
- Juo-Nang Liao
- Center for Condensed Matter Sciences, National Taiwan University, Taipei, 10617, Taiwan.,Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, 10617, Taiwan
| | - Wei-Liang Chen
- Center for Condensed Matter Sciences, National Taiwan University, Taipei, 10617, Taiwan
| | - Chao-Yuan Lo
- Center for Condensed Matter Sciences, National Taiwan University, Taipei, 10617, Taiwan
| | - Man-Hong Lai
- Center for Condensed Matter Sciences, National Taiwan University, Taipei, 10617, Taiwan
| | - Huang-Lung Tsai
- Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, 10617, Taiwan.
| | - Yu-Ming Chang
- Center for Condensed Matter Sciences, National Taiwan University, Taipei, 10617, Taiwan.
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29
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Paydar A, Jenner ZB, Simkins TJ, Chang YM, Hacein-Bey L, Ozturk A, Birkeland A, Assadsangabi R, Raslan O, Shadmani G, Apperson M, Ivanovic V. Autoimmune disease of head and neck, imaging, and clinical review. Neuroradiol J 2022; 35:545-562. [PMID: 35603923 PMCID: PMC9513912 DOI: 10.1177/19714009221100983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023] Open
Abstract
Autoimmune disease of the head and neck (H&N) could be primary or secondary to systemic diseases, medications, or malignancies. Immune-mediated diseases of the H&N are not common in daily practice of radiologists; the diagnosis is frequently delayed because of the non-specific initial presentation and lack of familiarity with some of the specific imaging and clinical features. In this review, we aim to provide a practical diagnostic approach based on the specific radiological findings for each disease. We hope that our review will help radiologists expand their understanding of the spectrum of the discussed disease entities, help them narrow the differential diagnosis, and avoid unnecessary tissue biopsy when appropriate based on the specific clinical scenarios.
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Affiliation(s)
| | - Zachary B Jenner
- University of California Davis
Medical Center, Sacramento, CA, USA
| | - Tyrell J Simkins
- Department of Neurology, University of California Davis
Medical Center, Sacramento, CA, USA
| | - Yu-Ming Chang
- Department of Radiology, Beth Israel Deaconess Medical
Center, Boston, MA, USA
| | | | - Arzu Ozturk
- Department of Medicine, UC Davis, Sacramento, CA, USA
| | | | - Reza Assadsangabi
- Department of Radiology, University of Southern
California, Los Angeles, CA, USA
| | - Osama Raslan
- Department of Radiology, University of California Davis
Medical Center, Sacramento, CA, USA
| | - Ghazal Shadmani
- School of Medicine in Saint Louis, Washington University, St Louis, MO, USA
| | - Michelle Apperson
- Department of Neurology, University of California Davis
Medical Center, Sacramento, CA, USA
| | - Vladimir Ivanovic
- Department of Radiology, Medical College of
Wisconsin, Milwaukee, WI, USA
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Du EH, Tenenbaum MN, Bhadelia RA, Sotman TE, Edlow JA, Selim MH, Chang YM. Major radiological outcomes of CTA head and neck performed for dizziness in a major academic Emergency Department. Neuroradiol J 2022:19714009221124304. [PMID: 36045600 DOI: 10.1177/19714009221124304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Purpose: Routine head and neck CTAs (CTAhead+neck) performed for dizziness in the Emergency Department (ED) has steadily increased, but its clinical utility is still poorly elucidated. Our purpose was to assess the radiologic outcomes of CTAhead+neck in ED dizziness patients.Methods: ED dizziness patients with CTAhead+neck from January 2010 through November 2019 were retrospectively identified and further stratified into central vertigo (CV), peripheral vertigo (PV), and non-specific dizziness (NSD) groups by final clinical diagnoses. Findings on CTAhead+neck (vessel stenosis >50%, occlusion, dissection, and infarct), and infarct on subsequent MRI if performed, were assessed. Differences in imaging findings were analyzed using chi-square or Fisher's exact tests.Results: Of 867 dizziness patients, 88 were diagnosed with CV, 383 with PV, and 396 with NSD. On CTAhead+neck, 11.4% of all patients had posterior CTA findings, including posterior occlusions (4.2%), dissections (1.2%), and infarcts (2.3%). CV patients had more posterior circulation findings (31.8%) versus PV (9.9%) and NSD (8.3%) patients (both p < 0.01). 21.6% of CV patients had acute infarcts on CT versus none for PV and 0.03% for NSD patients (both p < 0.01). On MRI, 46.6% of CV patients had acute posterior circulation infarcts versus none for PV and 0.3% for NSD patients (p < 0.01).Conclusion: Diagnostic yield for CTAhead+neck for dizziness patients is low except in central vertigo patients which constitute only 1/10th of CTAs performed. Our single institution results support that CTAhead+neck is likely low-yield in patients with high clinical suspicion for PV or NSD and further studies are needed to test this hypothesis.
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Affiliation(s)
- Elizabeth Hy Du
- Department of Radiology, 1859Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Mary N Tenenbaum
- Department of Radiology, 21645Baystate Medical Center, Springfield, MA, USA
| | - Rafeeque A Bhadelia
- Department of Radiology, 1859Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Timothy E Sotman
- Department of Radiology, 1859Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Jonathan A Edlow
- Department of Emergency Medicine, 1859Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Magdy H Selim
- Department of Neurology, 1859Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Yu-Ming Chang
- Department of Radiology, 1859Beth Israel Deaconess Medical Center, Boston, MA, USA
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Chang YM, Chou YT, Kan WC, Shiao CC. Sepsis and Acute Kidney Injury: A Review Focusing on the Bidirectional Interplay. Int J Mol Sci 2022; 23:ijms23169159. [PMID: 36012420 PMCID: PMC9408949 DOI: 10.3390/ijms23169159] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/06/2022] [Accepted: 08/12/2022] [Indexed: 11/25/2022] Open
Abstract
Although sepsis and acute kidney injury (AKI) have a bidirectional interplay, the pathophysiological mechanisms between AKI and sepsis are not clarified and worthy of a comprehensive and updated review. The primary pathophysiology of sepsis-associated AKI (SA-AKI) includes inflammatory cascade, macrovascular and microvascular dysfunction, cell cycle arrest, and apoptosis. The pathophysiology of sepsis following AKI contains fluid overload, hyperinflammatory state, immunosuppression, and infection associated with kidney replacement therapy and catheter cannulation. The preventive strategies for SA-AKI are non-specific, mainly focusing on infection control and preventing further kidney insults. On the other hand, the preventive strategies for sepsis following AKI might focus on decreasing some metabolites, cytokines, or molecules harmful to our immunity, supplementing vitamin D3 for its immunomodulation effect, and avoiding fluid overload and unnecessary catheter cannulation. To date, several limitations persistently prohibit the understanding of the bidirectional pathophysiologies. Conducting studies, such as the Kidney Precision Medicine Project, to investigate human kidney tissue and establishing parameters or scores better to determine the occurrence timing of sepsis and AKI and the definition of SA-AKI might be the prospects to unveil the mystery and improve the prognoses of AKI patients.
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Affiliation(s)
- Yu-Ming Chang
- Division of Nephrology, Department of Internal Medicine, Camillian Saint Mary’s Hospital Luodong, Yilan 26546, Taiwan
| | - Yu-Ting Chou
- Department of Internal Medicine, National Taiwan University Hospital, Taipei 100225, Taiwan
| | - Wei-Chih Kan
- Department of Nephrology, Department of Internal Medicine, Chi Mei Medical Center, Tainan 71004, Taiwan
- Department of Biological Science and Technology, Chung Hwa University of Medical Technology, Tainan 71703, Taiwan
- Correspondence: (W.-C.K.); (C.-C.S.)
| | - Chih-Chung Shiao
- Division of Nephrology, Department of Internal Medicine, Camillian Saint Mary’s Hospital Luodong, Yilan 26546, Taiwan
- Saint Mary’s Junior College of Medicine, Nursing and Management, Yilan 26546, Taiwan
- Correspondence: (W.-C.K.); (C.-C.S.)
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Khorasanizadeh M, Chang YM, Enriquez-Marulanda A, Mizuhashi S, Salem MM, Gomez-Paz S, Siddiq F, Kan P, Moore J, Ogilvy CS, Thomas AJ. Morphological changes in chronic subdural hematomas following upfront middle meningeal artery embolization: sequence, timing, and association with outcomes. J Neurosurg 2022; 137:235-248. [PMID: 34826814 DOI: 10.3171/2021.8.jns211691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 08/09/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Middle meningeal artery embolization (MMAE) is an increasingly utilized approach for the treatment of chronic subdural hematomas (CSDHs). The course of morphological progression of CSDHs following MMAE is poorly understood. Herein, the authors aimed to describe these morphological changes and assess their prognostic significance for the outcomes on follow-up. METHODS A single-institution retrospective cohort study of CSDH cases treated by upfront MMAE, without prior or adjunctive surgical evacuation, was performed. Clinical outcomes, complications, and the need for rescue surgery on follow-up were recorded. Hematomas were categorized into 6 morphological subtypes. All baseline and follow-up head CT scans were assessed for CSDH structural appearance, density, and loculation. Changes in CSDH size were quantified via 3D reconstruction for volumetric measurement. RESULTS Overall, 52 CSDHs in 45 patients treated with upfront MMAE were identified. Hematomas were followed for a mean of 92.9 days. Volume decreased by ≥ 50% in 79.6% of the CSDHs. The overall rescue surgery rate was 9.6%. A sequence of morphological changes after MMAE was identified. Hematomas that diverged from this sequence (5.4%) all progressed toward treatment failure and required rescue surgery. The CSDHs were categorized into early, intermediate, and late stages based on the baseline morphological appearance. Progression from early to intermediate and then to late stage took 12.7 and 30.0 days, respectively, on average. The volume of early/intermediate- and late-stage hematomas decreased by ≥ 50%, a mean of 78.2 and 47.6 days after MMAE, respectively. Early- and intermediate-stage hematomas showed a trend toward more favorable outcomes compared with late-stage hematomas. The density of homogeneous hypodense hematomas (HSDHs) transiently increased immediately after MMAE (p < 0.001). A marked decrease in density and volume 1 to 3 weeks after MMAE in HSDHs was detected, the lack of which indicated an eventual need for rescue surgery. In HSDHs, a baseline mean density of < 20 HU, and a lower density than baseline by 1 month post-MMAE were predictors of favorable outcomes. The baseline hematoma volume, axial thickness, midline shift, and loculation were not correlated with MMAE outcomes. Loculated, trabecular, and laminar hematomas, which are known to have unfavorable surgical outcomes, had MMAE outcomes similar to those of other "surgical" hematomas. CONCLUSIONS The current study was the first to describe the nature, sequence, and timing of morphological changes of CSDHs after MMAE treatment and has identified structural features that can predict treatment outcomes.
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Affiliation(s)
| | - Yu-Ming Chang
- 2Neuroradiology Service, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | | | - Satomi Mizuhashi
- 1Neurosurgical Service, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston
| | - Mohamed M Salem
- 1Neurosurgical Service, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston
| | - Santiago Gomez-Paz
- 1Neurosurgical Service, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston
| | - Farhan Siddiq
- 3Division of Neurosurgery, University of Missouri, Columbia, Missouri; and
| | - Peter Kan
- 4Department of Neurosurgery, University of Texas Medical Branch, Galveston, Texas
| | - Justin Moore
- 1Neurosurgical Service, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston
| | - Christopher S Ogilvy
- 1Neurosurgical Service, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston
| | - Ajith J Thomas
- 1Neurosurgical Service, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston
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Ebrahimzadeh SA, Du E, Chang YM, Bouffard M, Loth F, Bhadelia RA. MRI findings differentiating tonsillar herniation caused by idiopathic intracranial hypertension from Chiari I malformation. Neuroradiology 2022; 64:2307-2314. [PMID: 35697809 DOI: 10.1007/s00234-022-02993-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 06/02/2022] [Indexed: 11/24/2022]
Abstract
PURPOSE Some patients with idiopathic intracranial hypertension (IIH) have cerebellar tonsillar herniation ≥ 5 mm mimicking Chiari malformation I (CMI), which can result in misdiagnosis and unjustified treatment. Our purpose was to identify IIH patients with tonsillar herniation ≥ 5 mm (IIHTH) and compare with CMI patients to assess imaging findings that could distinguish the two conditions. METHODS Ninety-eight patients with IIH, 81 patients with CMI, and 99 controls were retrospectively assessed. Two neuroradiologists blindly reviewed MR images. IIHTH patients were compared with CMI patients and controls regarding the extent of tonsillar herniation (ETH), bilateral transverse sinus stenosis (BTSS), hypophysis-sella ratio (HSR), and bilateral tortuosity of optic nerve (BTON). RESULTS 13/98 (13.2%) IIH patients had tonsillar herniation ≥ 5 mm (IIHTH) and were significantly younger and had higher BMI compared with CMI patients and controls. ETH was significantly less in the IIHTH than CMI (6.5 ± 2.4 mm vs. 10.9 ± 4.4 mm; p < 0.001). BTSS and HSR < 0.5 were more common in IIHTH than CMI (p < 0.001 and p = 0.003, respectively). No differences were seen between CMI and controls. BTON was significantly more common in IIHTH compared to control (p = 0.01) but not to the CMI (p = 0.36). Sensitivity and specificity to differentiate IIHTH from CMI were 69.2% and 96.1% for BTSS and 69.2% and 75.3% for HSR < 0.5. CONCLUSION The presence of BTSS and/or HSR < 0.5 in patients with ETH ≥ 5 mm should suggest further evaluation to exclude IIH before considering CMI surgery.
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Affiliation(s)
- Seyed Amir Ebrahimzadeh
- Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, WCB90, 330 Brookline Ave, Boston, MB, 02215, USA.
| | - Elizabeth Du
- Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, WCB90, 330 Brookline Ave, Boston, MB, 02215, USA
| | - Yu-Ming Chang
- Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, WCB90, 330 Brookline Ave, Boston, MB, 02215, USA
| | - Marc Bouffard
- Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Francis Loth
- Department of Mechanical and Industrial Engineering, Northeastern University, Boston, MA, USA
| | - Rafeeque A Bhadelia
- Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, WCB90, 330 Brookline Ave, Boston, MB, 02215, USA
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Ebrahimzadeh SA, Manzoor K, Edlow JA, Selim M, Chang YM, Bhadelia RA, Mehta P. Diagnostic yield of CT angiography performed for suspected cervical artery dissection in the emergency department. Emerg Radiol 2022; 29:825-832. [DOI: 10.1007/s10140-022-02065-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 05/22/2022] [Indexed: 11/24/2022]
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Wilshaw J, Boswood A, Chang YM, Sands CJ, Camuzeaux S, Lewis MR, Xia D, Connolly DJ. Evidence of altered fatty acid metabolism in dogs with naturally occurring valvular heart disease and congestive heart failure. Metabolomics 2022; 18:34. [PMID: 35635592 PMCID: PMC9151558 DOI: 10.1007/s11306-022-01887-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 04/06/2022] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Myxomatous mitral valve disease (MMVD) is the most common cardiac condition in adult dogs. The disease progresses over several years and affected dogs may develop congestive heart failure (HF). Research has shown that myocardial metabolism is altered in cardiac disease, leading to a reduction in β-oxidation of fatty acids and an increased dependence upon glycolysis. OBJECTIVES This study aimed to evaluate whether a shift in substrate use occurs in canine patients with MMVD; a naturally occurring model of human disease. METHODS Client-owned dogs were longitudinally evaluated at a research clinic in London, UK and paired serum samples were selected from visits when patients were in ACVIM stage B1: asymptomatic disease without cardiomegaly, and stage C: HF. Samples were processed using ultra-performance liquid chromatography mass spectrometry and lipid profiles were compared using mixed effects models with false discovery rate adjustment. The effect of disease stage was evaluated with patient breed entered as a confounder. Features that significantly differed were screened for selection for annotation efforts using reference databases. RESULTS Dogs in HF had altered concentrations of lipid species belonging to several classes previously associated with cardiovascular disease. Concentrations of certain acylcarnitines, phospholipids and sphingomyelins were increased after individuals had developed HF, whilst some ceramides and lysophosphatidylcholines decreased. CONCLUSIONS The canine metabolome appears to change as MMVD progresses. Findings from this study suggest that in HF myocardial metabolism may be characterised by reduced β-oxidation. This proposed explanation warrants further research.
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Affiliation(s)
- Jenny Wilshaw
- Department of Clinical Science and Services, Royal Veterinary College, University of London, Hawkshead Lane, North Mymms, Hatfield, Hertfordshire, AL9 7TA, London, United Kingdom.
| | - A Boswood
- Department of Clinical Science and Services, Royal Veterinary College, University of London, Hawkshead Lane, North Mymms, Hatfield, Hertfordshire, AL9 7TA, London, United Kingdom
| | - Y M Chang
- Research Support Office, Royal Veterinary College, University of London, London, United Kingdom
| | - C J Sands
- National Phenome Centre, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom
| | - S Camuzeaux
- National Phenome Centre, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom
| | - M R Lewis
- National Phenome Centre, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom
| | - D Xia
- Research Support Office, Royal Veterinary College, University of London, London, United Kingdom
- Department of Comparative Biomedical Science, Royal Veterinary College, University of London, London, United Kingdom
| | - D J Connolly
- Department of Clinical Science and Services, Royal Veterinary College, University of London, Hawkshead Lane, North Mymms, Hatfield, Hertfordshire, AL9 7TA, London, United Kingdom
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Ravina K, Khorasanizadeh M, Chang YM, Ogilvy CS, Thomas AJ. Anomalous Frontal Extra-Axial Midline Traversing Vein as the Potential Source of Subarachnoid Hemorrhage. Cureus 2022; 14:e25350. [PMID: 35761920 PMCID: PMC9233433 DOI: 10.7759/cureus.25350] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/23/2022] [Indexed: 11/06/2022] Open
Abstract
Extra-axial developmental venous anomalies (DVAs) are important anatomic structures that contribute to supplemental venous drainage of intracranial contents into the extracranial veins. We present the case of a 35-year-old woman with a sudden-onset severe headache, nausea, and vomiting who was found to have an atraumatic subarachnoid hemorrhage of left frontal convexity. Workup revealed a large anomalous extra-axial vein originating in the right frontal area, traversing the left frontal region, penetrating the left frontal bone just above the supraorbital foramen with likely drainage into the left external jugular vein. This vein could not be classified as an emissary vein given the lack of direct communication with the superior sagittal sinus anterior portion, which was found to be hypoplastic. This case report adds to the literature a description of a previously unreported midline traversing frontal extra-axial vein directly draining frontal lobes with a potential implication in an atraumatic subarachnoid hemorrhage of frontal convexity.
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Lin PY, Liu CH, Chang YM, Huang CW, Su HC, Lin SH, Sung PS. Detailed risks and characteristics of postepilepsy stroke in non-traumatic adult-onset epilepsy. J Formos Med Assoc 2022; 121:2211-2219. [PMID: 35484004 DOI: 10.1016/j.jfma.2022.04.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 03/27/2022] [Accepted: 04/06/2022] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Patients with epilepsy have an increased risk of stroke. However, the detailed risk and characteristics of postepilepsy stroke have not been investigated. METHODS This study utilized the National Health Insurance Research Database in Taiwan. We classified adult patients with newly diagnosed epilepsy from 2003 to 2016 as the epilepsy cohort. Patients in the nonepilepsy cohort were selected with propensity score matching at a case-control ratio of 1:5. The incidence, hazard ratio (HR), period-specific HR, recurrent HR in the Wei-Lin-Weissfeld model, stroke severity index, complications, and mortality of all stroke, ischemic stroke (IS) and hemorrhagic stroke events in the two cohorts were analyzed. RESULTS We enrolled 23,810 patients in the epilepsy cohort and 119,050 persons in the nonepilepsy cohort. The period-specific HRs of all stroke, IS and hemorrhagic stroke peaked immediately after epilepsy diagnosis and trended downward [Adjusted HRs of all stroke: 4.88 (3.88-6.14), 4.47 (3.50-5.70), 3.17 (2.62-3.84), 2.81 (2.27-3.48), 2.81 (2.36-3.34) and 2.33 (2.07-2.62) in 0-0.5, 0.5-1, 1-2, 2-3, 3-5 and ≥5 years after epilepsy diagnosis, respectively]. The recurrent stroke HRs in the epilepsy cohort were >1 from the first [3.06 (2.71-3.34)] to the fourth events [6.33 (1.08-37.03)]. IS events in the epilepsy cohort were associated with a younger onset age, a higher IS severity index, a higher rate of urinary tract infection, a lower in-hospital mortality, while 90-day stroke mortality was similar between the 2 cohorts. CONCLUSION Since the increased risk of stroke in epilepsy cohort peaked immediately after epilepsy diagnosis, early implementation of prevention strategies is considered.
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Affiliation(s)
- Po-Yu Lin
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chi-Hung Liu
- Stroke Center and Department of Neurology, Chang Gung Memorial Hospital, Linkou Medical Center and College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yu-Ming Chang
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chin-Wei Huang
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Hui-Chen Su
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Sheng-Hsiang Lin
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Department of Public Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Biostatistics Consulting Center, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
| | - Pi-Shan Sung
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
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Hsiao FH, Chung CC, Chiang CH, Feng WN, Tzeng WY, Lin HM, Tu CM, Wu HL, Wang YH, Woon WY, Chen HC, Chen CH, Lo CY, Lai MH, Chang YM, Lu LS, Chang WH, Chen CW, Luo CW. Using Exciton/Trion Dynamics to Spatially Monitor the Catalytic Activities of MoS 2 during the Hydrogen Evolution Reaction. ACS Nano 2022; 16:4298-4307. [PMID: 35254822 DOI: 10.1021/acsnano.1c10380] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The adsorption and desorption of electrolyte ions strongly modulates the carrier density or carrier type on the surface of monolayer-MoS2 catalyst during the hydrogen evolution reaction (HER). The buildup of electrolyte ions onto the surface of monolayer MoS2 during the HER may also result in the formation of excitons and trions, similar to those observed in gate-controlled field-effect transistor devices. Using the distinct carrier relaxation dynamics of excitons and trions of monolayer MoS2 as sensitive descriptors, an in situ microcell-based scanning time-resolved liquid cell microscope is set up to simultaneously measure the bias-dependent exciton/trion dynamics and spatially map the catalytic activity of monolayer MoS2 during the HER. This operando probing technique used to monitor the interplay between exciton/trion dynamics and electrocatalytic activity for two-dimensional transition metal dichalcogenides provides an excellent platform to investigate the local carrier behaviors at the atomic layer/liquid electrolyte interfaces during electrocatalytic reaction.
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Affiliation(s)
- Fu-He Hsiao
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
| | - Cheng-Chu Chung
- Department of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Chun-Hao Chiang
- Department of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Wei-Neng Feng
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
| | - Wen-Yen Tzeng
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
| | - Hung-Min Lin
- Department of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Chien-Ming Tu
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
| | - Heng-Liang Wu
- Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan
- Center of Atomic Initiative for New Materials (AI-MAT), National Taiwan University, Taipei 10617, Taiwan
| | - Yu-Han Wang
- Department of Physics, National Central University, Taoyuan 32001, Taiwan
- Molecular Science and Technology Program, Taiwan International Graduate Program, Institute of Atomic and Molecular Science, Academia Sinica, Taipei 10617, Taiwan
| | - Wei-Yen Woon
- Department of Physics, National Central University, Taoyuan 32001, Taiwan
- Molecular Science and Technology Program, Taiwan International Graduate Program, Institute of Atomic and Molecular Science, Academia Sinica, Taipei 10617, Taiwan
| | - Hsiao-Chien Chen
- Center for Reliability Science and Technologies, Chang Gung University, Taoyuan 33302, Taiwan
- Kidney Research Center, Department of Nephrology, Chang Gung Memorial Hospital, Linkou, Taoyuan 333, Taiwan
| | - Ching-Hsiang Chen
- Sustainable Energy Development Center, National Taiwan University of Science and Technology, Taipei 106335, Taiwan
| | - Chao-Yuan Lo
- Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan
- Center of Atomic Initiative for New Materials (AI-MAT), National Taiwan University, Taipei 10617, Taiwan
| | - Man-Hong Lai
- Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan
| | - Yu-Ming Chang
- Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan
- Center of Atomic Initiative for New Materials (AI-MAT), National Taiwan University, Taipei 10617, Taiwan
| | - Li-Syuan Lu
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
| | - Wen-Hao Chang
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
- Taiwan Consortium of Emergent Crystalline Materials (TCECM), Ministry of Science and Technology, Taipei 10622, Taiwan
| | - Chun-Wei Chen
- Department of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
- Center of Atomic Initiative for New Materials (AI-MAT), National Taiwan University, Taipei 10617, Taiwan
- Taiwan Consortium of Emergent Crystalline Materials (TCECM), Ministry of Science and Technology, Taipei 10622, Taiwan
| | - Chih-Wei Luo
- Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
- Taiwan Consortium of Emergent Crystalline Materials (TCECM), Ministry of Science and Technology, Taipei 10622, Taiwan
- Institute of Physics and Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
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Khorasanizadeh M, Chang YM, Enriquez-Marulanda A, Mizuhashi S, Moore JM, Ogilvy CS, Thoma AJ. 109 Morphological Changes in Chronic Subdural Hematomas Following Upfront Middle Meningeal Artery Embolization: Sequence, Timing, and Association with Outcomes. Neurosurgery 2022. [DOI: 10.1227/neu.0000000000001880_109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Su YH, Chang YM, Kung CY, Sung CK, Foo WS, Wu MH, Chiou SJ. A study of correlations between metabolic syndrome factors and osteosarcopenic adiposity. BMC Endocr Disord 2021; 21:216. [PMID: 34711214 PMCID: PMC8555223 DOI: 10.1186/s12902-021-00880-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 10/19/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Aging reduces the quality and strength of bones and muscles and increases body fat, which can lead to the simultaneous occurrence of sarcopenia, osteopenia, and adiposity, a condition referred to as OsteoSarcopenic Adiposity (OSA). While previous studies have demonstrated that metabolic syndrome is associated with sarcopenia, osteopenia, and adiposity, the relationship between metabolic syndrome and OSA remains largely unknown. METHODS We analyzed data for a sample of middle-aged individuals from a Health Management Center database, which was collected in 2016-2018. There are 2991 cases of people over 50 years from a physical examination center in a hospital in Taiwan during 2016-2018. In addition to descriptive statistics, chi-squared test, analysis of variance, and multinomial logistic regression analysis were conducted to examine OSA risk and associated factors. RESULTS Based on multinomial logistic regression analysis, in different OSA severity level (1-3 more serious), those who are with metabolic syndrome has increased the 2.49-2.57 times risk of OSA (p < 0.001) in OSA = 2 and 3 groups while there is no significant difference in OSA =1 group. CONCLUSION The prevalence of OSA may impair the health and quality of life in the elderly group, especially those diagnosed with metabolic syndrome, increasing the risk of OSA. These results can help promote early diagnosis and treatment of OSA in clinical settings, particularly among aging individuals with abnormal physical function, the group with the highest OSA incidence.
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Affiliation(s)
- Yu-Hsiang Su
- Department of Health Care Management, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan
| | - Yu-Ming Chang
- Department of Urology, West Garden Hospital, Taipei, Taiwan
| | - Chih-Ying Kung
- Department of Medical Research and Education, West Garden Hospital, Taipei, Taiwan
| | - Chiu-Kuei Sung
- Department of Nursing, West Garden Hospital, Taipei, Taiwan
| | - Wei-Shin Foo
- Department of Rehabilitation, West Garden Hospital, Taipei, Taiwan
| | - Mei-Hua Wu
- Institute of Health Policy and Management, College of Public Health, National Taiwan University, Taipei, Taiwan
| | - Shang-Jyh Chiou
- Department of Health Care Management, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan.
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Xing Y, Yu X, Zhu J, Chang YM, You YX, Chen ZK, Dou YQ, Ma DF, Tong XM. [Levels of human milk oligosaccharides in breast milk of mothers delivering preterm infants of different gestational ages and their effects on early growth and development]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:1067-1076. [PMID: 34619923 DOI: 10.3760/cma.j.cn112150-20210513-00468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the human milk oligosaccharides (HMOs) levels in breast milk of mothers delivering preterm infants and their effects on the early growth and development of infants. Methods: In this prospective cohort study, full-term and preterm newborns whose parents decided to breastfeed were recruited from Peking University Third Hospital between December 1, 2017 and November 30, 2018. The preterm infants were divided based on their gestational ages into extremely preterm (<28 weeks), very preterm (28-31+6 weeks) and moderate to late preterm (32-36+6 weeks) groups. Breast milk was collected from mothers at 7, 14, 28 and 120d postpartum. 368 breast milk samples were collected from 125 mothers in this study, including 54 mothers of full-term infants, 23 mothers of moderate to late preterm infants, 39 mothers of very preterm infants, and 9 mothers of extremely preterm infants. Ultra-performance liquid chromatography-mass spectrometer (UPLC-MS/MS) was used to determine the concentration of 2'-fucosyllactose (2'FL), 3-fucosyllactose (3FL), 3'-sialyllactose (3'SL), A-tetrasaccharide (P1), lacto-N-tetraose (LNT), lacto-N-neotetraose (LNnT), lacto-N-fucopentaose Ⅱ (LNFP-Ⅱ) and lacto-N-fucopentaose Ⅴ (LNFP-Ⅴ). Secretor status of mothers was defined as 2'-fucosyllactose (2'FL) concentration in colostrum and transitional milk greater than 200 μg/mL. Weight gain and the occurrence of allergic diseases of infants were collected at 120 d(4 months) postpartum. The chi-square test or the Fisher's exact test was used for the comparison of categorical data between groups; Kruskal-Wallis test and Wilcoxon rank sum test were used for comparison of continuous data between groups. Nemenyi test was used for multiple comparison. Results: 79.2% (99/125) of the mothers were secretor. There were no statistical differences between groups in the secretor status of mothers (χ²=1.31,P>0.05). The total concentration of HMOs peaked at 1-2 weeks postpartum. Compared to the preterm milk, the HMOs from the term milk was trending downwards at an earlier time. In the breast milk of secretor mothers on 28 d, total concentration of HMOs significant differed among the three groups of preterm milk and the term milk, with the median value of 4 587.09,4 615.25,5 277.44,5 476.03 μg/mL, respectively (Kruskal-Wallis χ²=8.1234,P=0.044). When analyzed by the median weight gain of the infants (low vs high weight gain) at 4 months postpartum, 2'FL was significantly lower in the high weight gain group at 7 d (1 818.04 μg/mL vs 2 181.67 μg/mL, W=1 386,P=0.018), while LNT & LNnT were significantly higher (1 182.36 μg/mL vs 1 053.62 μg/mL, W=816,P=0.044). The level of 3FL at 120 d was significantly affected by presence of allergic disease in infants, breast milk from mothers of infants with allergic disease had lower 3FL than those from mothers of infants without allergic disease (256.17 μg/mL vs 286.18 μg/mL, W=564,P=0.026). Conclusions: The overall profiles of HMOs in breast milk of mothers delivering preterm infants was basically the same as that of mothers delivering term infants; individual HMOs play a role in weight gain and the development of allergic diseases in preterm infants, but the mechanism is unclear and needs further study.
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Affiliation(s)
- Y Xing
- Department of Pediatrics, Peking University Third Hospital, Beijing 100191, China
| | - X Yu
- Department of Social Medicine and Health Education,School of Public Health, Peking University, Beijing 100191,China
| | - J Zhu
- Functional Evaluation Center,Beijing Institute of Nutritional Resources, Beijing 100069,China
| | - Y M Chang
- Department of Pediatrics, Peking University Third Hospital, Beijing 100191, China
| | - Y X You
- Department of Pediatrics, Peking University Third Hospital, Beijing 100191, China
| | - Z K Chen
- Department of Social Medicine and Health Education,School of Public Health, Peking University, Beijing 100191,China
| | - Y Q Dou
- Department of Social Medicine and Health Education,School of Public Health, Peking University, Beijing 100191,China
| | - D F Ma
- Department of Social Medicine and Health Education,School of Public Health, Peking University, Beijing 100191,China
| | - X M Tong
- Department of Pediatrics, Peking University Third Hospital, Beijing 100191, China
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Caplan LR, Chang YM. Severe Unilateral Proprioceptive Loss in Medullary- Rostral Spinal Cord Infarction. A Posterior Spinal Artery Syndrome. J Stroke Cerebrovasc Dis 2021; 30:105882. [PMID: 34077822 DOI: 10.1016/j.jstrokecerebrovasdis.2021.105882] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 05/07/2021] [Accepted: 05/07/2021] [Indexed: 11/17/2022] Open
Abstract
We draw attention to a unique presentation, severe unilateral loss of limb proprioception, in patients with medullary and rostral spinal cord infarction. Two patients developed acute severe proprioceptive loss in the limbs ipsilateral to infarcts that involved the caudal medulla and rostral spinal cord. They also had symptoms and signs often found in lateral medullary infarction. The proprioceptive loss is attributable to injury to the gracile and cuneate nuclei and/or their projections to the medial lemniscus. The infarct territory is supplied by the posterior spinal branches of the vertebral artery near its penetration into the posterior fossa. The presence of severe ipsilateral proprioceptive loss in a patient with features of lateral medullary infarction indicates involvement of the rostral spinal cord.
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Affiliation(s)
- Louis R Caplan
- Beth Israel Deaconess Medical center, 330 Brookline Ave, Boston, MA 02215, USA.
| | - Yu-Ming Chang
- Beth Israel Deaconess Medical Center, Department of Radiology, 330 Brookline Avenue, Boston, MA 02215-5400, USA
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43
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Chang YM, Wang CM, Lin PY, Sung PS, Lin SH, Chen CH. Simple but Organized Neurology Residency Training Improves the Quality of Acute Stroke Care: From the Outset to Long-Term Effect. J Stroke 2021; 23:293-295. [PMID: 34102767 PMCID: PMC8189861 DOI: 10.5853/jos.2020.04910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 05/19/2021] [Indexed: 11/11/2022] Open
Affiliation(s)
- Yu-Ming Chang
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chun-Min Wang
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Po-Yu Lin
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Pi-Shan Sung
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Sheng-Hsiang Lin
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Biostatistics Consulting Center, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chih-Hung Chen
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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Larocque N, Shenoy-Bhangle A, Brook A, Eisenberg R, Chang YM, Mehta P. Resident Experiences With Virtual Radiology Learning During the COVID-19 Pandemic. Acad Radiol 2021; 28:704-710. [PMID: 33640229 PMCID: PMC7883720 DOI: 10.1016/j.acra.2021.02.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 02/03/2021] [Accepted: 02/06/2021] [Indexed: 12/12/2022]
Abstract
Rationale and Objectives COVID-19 has disrupted radiology education and forced a transition from traditional in-person learning to a virtual platform. As a result of hospital and state mandates, our radiology residency program quickly transitioned to a virtual learning platform to continue dissemination of knowledge, maintain resident engagement, and ensure professional development. The goal of this study is to assess the strengths and weaknesses of the virtual learning platform at our institution using resident ratings. Materials and Methods This institutional IRB-exempt study involved a survey of 17 questions which was electronically distributed to 45 radiology residents using SurveyMonkey. Questions encompassed resident satisfaction with teaching and professional development, scheduling changes, and engagement with the virtual platform. Answers to most questions were submitted on a Likert scale. Results A total of 31 of 45 respondents completed the survey (response rate = 69%). Most residents were satisfied with the virtual platform with teaching activities identified as a strength and the incorporation of professional development as a weakness. The most frequent barriers to attending the virtual curriculum were technical difficulties (43%) and childcare (36%). Residents who reported experiencing barriers were less likely to adhere to the virtual curriculum (p = 0.004). Most respondents (81%) reported a desire to maintain elements of the virtual learning practice postpandemic. Conclusion The majority of residents reported high satisfaction with virtual learning during the COVID-19 pandemic. Teaching activities are a curricular strength. Weaknesses identified include the incorporation of professional development and extrinsic barriers, such as technical difficulties and family obligations, which require further support for trainees.
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Affiliation(s)
- Natasha Larocque
- Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, Massachusetts.
| | - Anuradha Shenoy-Bhangle
- Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, Massachusetts
| | - Alexander Brook
- Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, Massachusetts
| | - Ronald Eisenberg
- Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, Massachusetts
| | - Yu-Ming Chang
- Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, Massachusetts
| | - Pritesh Mehta
- Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, Massachusetts
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45
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Wang WT, Luo MC, Chang YM. Exploring the Relationship between Conflict Management and Transformational Leadership Behaviors for the Success of ERP Customization. Information Systems Management 2021. [DOI: 10.1080/10580530.2021.1913680] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Wei-Tsong Wang
- Department of Industrial and Information Management, National Cheng Kung University, Tainan Taiwan
| | - Mei-Chun Luo
- Department of Industrial and Information Management, National Cheng Kung University, Tainan Taiwan
| | - Yu-Ming Chang
- Department of Industrial and Information Management, National Cheng Kung University, Tainan Taiwan
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46
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Lee TL, Liu CH, Chang YM, Lin TY, Chien CY, Chen CH, Tsai KJ, Lin SH, Sung PS. The Impact of Antiplatelet Use on the Risk of Intracerebral Hemorrhage in Patients with Alzheimer's Disease: A Nationwide Cohort Study. J Alzheimers Dis 2021; 73:297-306. [PMID: 31771060 DOI: 10.3233/jad-190762] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Antiplatelet use on the risk of intracerebral hemorrhage (ICH) in patients with Alzheimer's disease (AD) has not yet been completely elucidated. OBJECTIVE This large epidemiologic study aims to estimate the risk of ICH in AD patients treated with antiplatelet therapy (APT). METHODS Using data from Taiwan's National Health Insurance Research Database, ICH risk in APT-treated AD patients with a validated diagnosis (N = 824) was determined. AD without APT and non-AD with and without APT comparison cohorts were selected. To adjust for confounders and competing risk of death, inverse probability of treatment weighting using propensity scores and competing risks regression (CRR) were applied. Cox proportional hazards regression analysis estimated ICH risk in all cohorts comparing with non-AD without APT. RESULTS Among the 824 AD patients with APT, 79.6% were prescribed aspirin. ICH incidence rates in the AD (with/without APT) and non-AD (with/without APT) cohorts were 2.88/2.70 and 2.24/1.20 per 1,000 person-years, respectively. Overall, AD with (adjusted hazards ratio (aHR), 2.29; 95% CI, 1.19-4.38) and without (aHR, 1.97; 95% CI, 1.08-3.61) APT and non-AD with APT (aHR, 1.80; 95% CI, 1.34-2.42) were at a higher risk and had elevated subdistribution HR obtained from CRR than non-AD without APT controls. However, the risk was comparable between the AD cohorts with and without APT (HR, 1.16; 95% CI, 0.51-2.66). CONCLUSIONS Our study indicated both the APT and non-APT users in AD population yielded higher ICH risks. However, whether APT use potentiate the risk of ICH in AD patients may warrant further evaluation.
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Affiliation(s)
- Tsung-Lin Lee
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chi-Hung Liu
- Stroke Center and Department of Neurology, Chang Gung Memorial Hospital, Linkou Medical Center and College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yu-Ming Chang
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Tien-Yu Lin
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chung-Yao Chien
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chih-Hung Chen
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Kuen-Jer Tsai
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Sheng-Hsiang Lin
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Department of Public Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Biostatistics Consulting Center, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Pi-Shan Sung
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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Sun L, Kumar P, Liu Z, Choi J, Fang B, Roesch S, Tran K, Casara J, Priego E, Chang YM, Moody G, Silverman KL, Lorenz VO, Scheibner M, Luo T, Li X. Phonon Dephasing Dynamics in MoS 2. Nano Lett 2021; 21:1434-1439. [PMID: 33508204 DOI: 10.1021/acs.nanolett.0c04368] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A variety of quantum degrees of freedom, e.g., spins, valleys, and localized emitters, in atomically thin van der Waals materials have been proposed for quantum information applications, and they inevitably couple to phonons. Here, we directly measure the intrinsic optical phonon decoherence in monolayer and bulk MoS2 by observing the temporal evolution of the spectral interference of Stokes photons generated by pairs of laser pulses. We find that a prominent optical phonon mode E2g exhibits a room-temperature dephasing time of ∼7 ps in both the monolayer and bulk. This dephasing time extends to ∼20 ps in the bulk crystal at ∼15 K, which is longer than previously thought possible. First-principles calculations suggest that optical phonons decay via two types of three-phonon processes, in which a pair of acoustic phonons with opposite momentum are generated.
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Affiliation(s)
- Liuyang Sun
- Department of Physics, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Parveen Kumar
- Department of Physics, University of California Merced, Merced, California 95340, United States
- Stem Cell Instrumentation Foundry, University of California Merced, Merced, California 95343, United States
| | - Zeyu Liu
- Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Junho Choi
- Department of Physics, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Bin Fang
- The Center for Dynamics and Control of Materials: An NSF MRSEC, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Sebastian Roesch
- Department of Physics, The University of Texas at Austin, Austin, Texas 78712, United States
- Department of Physics, University of Tübingen, Tübingen D72076, Germany
| | - Kha Tran
- Department of Physics, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Joshua Casara
- Department of Physics, University of California Merced, Merced, California 95340, United States
| | - Eduardo Priego
- Department of Physics, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Yu-Ming Chang
- Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan
| | - Galan Moody
- Department of Electrical and Computer Engineering, University of California Santa Barbara, Santa Barbara, California 93106, United States
| | - Kevin L Silverman
- National Institute of Standards and Technology, Boulder, Colorado 80305, United States
| | - Virginia O Lorenz
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- IQUIST, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Michael Scheibner
- Department of Physics, University of California Merced, Merced, California 95340, United States
| | - Tengfei Luo
- Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Xiaoqin Li
- Department of Physics, The University of Texas at Austin, Austin, Texas 78712, United States
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Ouyang L, Meyer-Zedler T, See KM, Chen WL, Lin FC, Akimov D, Ehtesabi S, Richter M, Schmitt M, Chang YM, Gräfe S, Popp J, Huang JS. Spatially Resolving the Enhancement Effect in Surface-Enhanced Coherent Anti-Stokes Raman Scattering by Plasmonic Doppler Gratings. ACS Nano 2021; 15:809-818. [PMID: 33356140 PMCID: PMC7944573 DOI: 10.1021/acsnano.0c07198] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 12/09/2020] [Indexed: 05/22/2023]
Abstract
Well-designed plasmonic nanostructures can mediate far and near optical fields and thereby enhance light-matter interactions. To obtain the best overall enhancement, structural parameters need to be carefully tuned to obtain the largest enhancement at the input and output frequencies. This is, however, challenging for nonlinear light-matter interactions involving multiple frequencies because obtaining the full picture of structure-dependent enhancement at individual frequencies is not easy. In this work, we introduce the platform of plasmonic Doppler grating (PDG) to experimentally investigate the enhancement effect of plasmonic gratings in the input and output beams of nonlinear surface-enhanced coherent anti-Stokes Raman scattering (SECARS). PDGs are designable azimuthally chirped gratings that provide broadband and spatially dispersed plasmonic enhancement. Therefore, they offer the opportunity to observe and compare the overall enhancement from different combinations of enhancement in individual input and output beams. We first confirm PDG's capability of spatially separating the input and output enhancement in linear surface-enhanced fluorescence and Raman scattering. We then investigate spatially resolved enhancement in nonlinear SECARS, where coherent interaction of the pump, Stokes, and anti-Stokes beams is enhanced by the plasmonic gratings. By mapping the SECARS signal and analyzing the azimuthal angle-dependent intensity, we characterize the enhancement at individual frequencies. Together with theoretical analysis, we show that while simultaneous enhancement in the input and output beams is important for SECARS, the enhancement in the pump and anti-Stokes beams plays a more critical role in the overall enhancement than that in the Stokes beam. This work provides an insight into the enhancement mechanism of plasmon-enhanced spectroscopy, which is important for the design and optimization of plasmonic gratings. The PDG platform may also be applied to study enhancement mechanisms in other nonlinear light-matter interactions or the impact of plasmonic gratings on the fluorescence lifetime.
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Affiliation(s)
- Lei Ouyang
- Leibniz
Institute of Photonic Technology, Albert-Einstein Strasse 9, 07745 Jena, Germany
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Helmholtzweg 4, D-07743 Jena, Germany
- School
of Chemistry and Chemical Engineering, Huazhong
University of Science and Technology, Wuhan 430074, China
| | - Tobias Meyer-Zedler
- Leibniz
Institute of Photonic Technology, Albert-Einstein Strasse 9, 07745 Jena, Germany
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Helmholtzweg 4, D-07743 Jena, Germany
| | - Kel-Meng See
- Department
of Chemistry, National Tsing Hua University, 101 Sec. 2, Kuang-Fu Road, Hsinchu 30013, Taiwan
| | - Wei-Liang Chen
- Center
for Condensed Matter Sciences, National
Taiwan University, Taipei 10617, Taiwan
| | - Fan-Cheng Lin
- Department
of Chemistry, National Tsing Hua University, 101 Sec. 2, Kuang-Fu Road, Hsinchu 30013, Taiwan
| | - Denis Akimov
- Leibniz
Institute of Photonic Technology, Albert-Einstein Strasse 9, 07745 Jena, Germany
| | - Sadaf Ehtesabi
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Helmholtzweg 4, D-07743 Jena, Germany
| | - Martin Richter
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Helmholtzweg 4, D-07743 Jena, Germany
| | - Michael Schmitt
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Helmholtzweg 4, D-07743 Jena, Germany
| | - Yu-Ming Chang
- Center
for Condensed Matter Sciences, National
Taiwan University, Taipei 10617, Taiwan
| | - Stefanie Gräfe
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Helmholtzweg 4, D-07743 Jena, Germany
| | - Jürgen Popp
- Leibniz
Institute of Photonic Technology, Albert-Einstein Strasse 9, 07745 Jena, Germany
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Helmholtzweg 4, D-07743 Jena, Germany
| | - Jer-Shing Huang
- Leibniz
Institute of Photonic Technology, Albert-Einstein Strasse 9, 07745 Jena, Germany
- Institute
of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Helmholtzweg 4, D-07743 Jena, Germany
- Department
of Chemistry, National Tsing Hua University, 101 Sec. 2, Kuang-Fu Road, Hsinchu 30013, Taiwan
- Research
Center for Applied Sciences, Academia Sinica, 128 Sec. 2, Academia Road, Nankang District, Taipei 11529, Taiwan
- Department
of Electrophysics, National Chiao Tung University, Hsinchu 30010, Taiwan
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Ali A, Manzoor K, Chang YM, Mehta PJ, Brook A, Hackney DB, Edlow JA, Bhadelia RA. Role of C-reactive protein in effective utilization of emergent MRI for spinal infections. Emerg Radiol 2021; 28:573-580. [PMID: 33449259 DOI: 10.1007/s10140-020-01892-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 12/16/2020] [Indexed: 11/24/2022]
Abstract
PURPOSE Emergent spinal MRI is recommended for patients with back pain and red flags for infection. However, many of these studies are negative due to low prevalence of spinal infections. Our purpose was to assess if C-reactive protein (CRP) can be used to guide effective utilization of emergent MRI for spinal infections. METHODS 316/960 (33%) MRIs performed for infection by the emergency department over 75-month period had CRP levels obtained at presentation, after excluding patients receiving antibiotic or had spinal surgery in < 1 month. An MRI was considered positive when there was imaging evidence of spinal infection confirmed on follow-up by surgery/biopsy/drainage or definitive therapy. A CRP of ≤ 10 mg/L was considered normal and > 100 mg/L as highly elevated. RESULTS CRP was normal in 95/316 (30%) and abnormal in 221/316 (70%) patients. MRI was positive in 43/316 (13.6%) patients, all of whom had abnormal CRP. CRP (p < 0.001) and intravenous drug use (IVDU; p = 0.002) were independently associated with a positive MRI. Receiver operator characteristic (ROC) analysis showed AUC of 0.76 for CRP, slightly improving with IVDU. Sensitivity, specificity, and negative predictive values for CRP level cut-off: 10 mg/L, 100%, 35%, and 100%, and 100 mg/L, 58%, 70% and 91%, respectively. CONCLUSION Abnormal CRP, although extremely sensitive, lacks specificity in predicting a positive MRI for spinal infection unless highly elevated. However, a normal CRP (absent recent antibiotic or surgery) makes spinal infection unlikely, and its routine use as a screening test can help reducing utilization of emergent MRI for this purpose.
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Affiliation(s)
- Aamir Ali
- Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA, 02215, USA
| | - Komal Manzoor
- Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA, 02215, USA
| | - Yu-Ming Chang
- Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA, 02215, USA
| | - Pritesh J Mehta
- Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA, 02215, USA
| | - Alexander Brook
- Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA, 02215, USA
| | - David B Hackney
- Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA, 02215, USA
| | - Jonathan A Edlow
- Department of Emergency Medicine, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA, 02215, USA
| | - Rafeeque A Bhadelia
- Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Ave, Boston, MA, 02215, USA.
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Chang YM, Chen CC, Lee NC, Sung JM, Chou YY, Chiou YY. PAX2 Mutation-Related Renal Hypodysplasia: Review of the Literature and Three Case Reports. Front Pediatr 2021; 9:765929. [PMID: 35087773 PMCID: PMC8787321 DOI: 10.3389/fped.2021.765929] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 12/06/2021] [Indexed: 11/13/2022] Open
Abstract
Paired box 2 (PAX2)-related disorder is an autosomal dominant genetic disorder associated with kidney and eye abnormalities and can result in end stage renal disease (ESRD). Despite reported low prevalence of PAX2 mutations, the prevalence of PAX2 related disorders may have been underestimated in past studies. With improved genetic sequencing techniques, more genetic abnormalities are being detected than ever before. Here, we report three patients from two families with PAX2 mutations identified within 1 year. Two patients were adults with chronic kidney disease and were followed for decades without correct diagnoses, including one with ESRD who had even undergone kidney transplant. The third patient was a neonate in whom PAX2-related disorder manifested as oligohydramnios, coloboma, and renal failure that progressed to ESRD within 1 year after birth. The phenotypes of PAX2 gene mutation were shown to be highly variable, even within the same family. Early detection promoted genetic counseling and guided clinical management. The appropriate time point for genetic study is an important issue. Clinicians must be more alert for PAX2 mutation when facing patients with congenital kidney and urinary tract anomalies, chronic kidney disease of unknown etiology, involvement of multiple systems, and/or a family history of renal disease.
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Affiliation(s)
- Yu-Ming Chang
- Department of Pediatrics, College of Medicine, National Cheng Kung University Hospital, National Cheng Kung University, Tainan City, Taiwan
| | - Chih-Chia Chen
- Department of Pediatrics, College of Medicine, National Cheng Kung University Hospital, National Cheng Kung University, Tainan City, Taiwan.,College of Medicine, Institutes of Clinical Medicine, National Cheng Kung University, Tainan City, Taiwan
| | - Ni-Chung Lee
- Department of Medical Genetics, National Taiwan University Hospital, Taipei City, Taiwan.,Department of Pediatrics, National Taiwan University Hospital, Taipei City, Taiwan
| | - Junne-Ming Sung
- Division of Nephrology, Department of Internal Medicine, College of Medicine, National Cheng Kung University Hospital, National Cheng Kung University, Tainan City, Taiwan
| | - Yen-Yin Chou
- Department of Pediatrics, College of Medicine, National Cheng Kung University Hospital, National Cheng Kung University, Tainan City, Taiwan
| | - Yuan-Yow Chiou
- Department of Pediatrics, College of Medicine, National Cheng Kung University Hospital, National Cheng Kung University, Tainan City, Taiwan.,College of Medicine, Institutes of Clinical Medicine, National Cheng Kung University, Tainan City, Taiwan
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