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Tan M, Zheng X, Yu W, Chen B, Chu C. Facet-Dependent Productions of Reactive Oxygen Species from Pyrite Oxidation. Environ Sci Technol 2024; 58:432-439. [PMID: 38111081 DOI: 10.1021/acs.est.3c06105] [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: 12/20/2023]
Abstract
Reactive oxygen species (ROS) are widespread in nature and play central roles in numerous biogeochemical processes and pollutant dynamics. Recent studies have revealed ROS productions triggered by electron transfer from naturally abundant reduced iron minerals to oxygen. Here, we report that ROS productions from pyrite oxidation exhibit a high facet dependence. Pyrites with various facet compositions displayed distinct efficiencies in producing superoxide (O2• -), hydrogen peroxide (H2O2), and hydroxyl radical (•OH). The 48 h •OH production rates varied by 3.1-fold from 11.7 ± 0.4 to 36.2 ± 0.6 nM h-1, showing a strong correlation with the ratio of the {210} facet. Such facet dependence in ROS productions primarily stems from the different surface electron-donating capacities (2.2-8.6 mmol e- g-1) and kinetics (from 1.2 × 10-4 to 5.8 × 10-4 s-1) of various faceted pyrites. Further, the Fenton-like activity also displayed 10.1-fold variations among faceted pyrites, contributing to the facet depedence of •OH productions. The facet dependence of ROS production can greatly affect ROS-driven pollutant transformations. As a paradigm, the degradation rates of carbamazepine, phenol, and bisphenol A varied by 3.5-5.3-fold from oxidation of pyrites with different facet compositions, where the kinetics were in good agreement with the pyrite {210} facet ratio. These findings highlight the crucial role of facet composition in determining ROS production and subsequent ROS-driven reactions during iron mineral oxidation.
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Affiliation(s)
- Mengxi Tan
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
| | - Xiaoshan Zheng
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
| | - Wanchao Yu
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang 310058, People's Republic of China
| | - Baoliang Chen
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang 310058, People's Republic of China
| | - Chiheng Chu
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, People's Republic of China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang 310058, People's Republic of China
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Wang L, Zhou JC, Li ZH, Zhang X, Leung KMY, Yuan L, Sheng GP. Facet-Specific Photocatalytic Degradation of Extracellular Antibiotic Resistance Genes by Hematite Nanoparticles in Aquatic Environments. Environ Sci Technol 2023; 57:21835-21845. [PMID: 38085064 DOI: 10.1021/acs.est.3c06571] [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: 12/27/2023]
Abstract
The persistence of extracellular antibiotic resistance genes (ARGs) in aquatic environments has attracted increasing attention due to their potential threat to public health and the environment. However, the fate of extracellular ARGs in receiving water remains largely unknown. This study investigated the influence of hematite nanoparticles, a widespread natural mineral, on the photodegradation of extracellular ARGs in river water. Results showed that under exposure to visible light, hematite nanoparticles, at environmental concentrations, resulted in a 3-5 orders of magnitude reduction in extracellular ARGs. This photodegradation of extracellular ARGs is shown to be facet-dependent; the (001) facet of hematite demonstrates a higher removal rate than that of the (100) facet, which is ascribed to its enhanced adsorption capability and higher hydroxyl radical (•OH) production. Density functional theory (DFT) calculations corroborate this finding, indicating elevated iron density, larger adsorption energy, and lower energy barrier of •OH formation on the (001) facet, providing more active sites and •OH generation for extracellular ARG interaction. Gel electrophoresis and atomic force microscopy analyses further confirm that the (001) facet causes more substantial damage to extracellular ARGs than the (100) facet. These findings pave the way for predicting the photodegradation efficiency of hematite nanoparticles with varied facets, thereby shedding light on the inherent self-purification capacity for extracellular ARGs in both natural and engineered aquatic environments.
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Affiliation(s)
- Li Wang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China
- USTC-CityU Joint Advanced Research Center, Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou 215123, China
| | - Jing-Chen Zhou
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Zheng-Hao Li
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Xin Zhang
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Kenneth Mei Yee Leung
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong 999077, China
| | - Li Yuan
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Guo-Ping Sheng
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China
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Wang F, Zheng Y, Zhu H, Wu T. Screening of MnO 2 with desired facet and its behavior in highly selective adsorption of aqueous Pb (II): Theoretical and experimental studies. Chemosphere 2023:139239. [PMID: 37379975 DOI: 10.1016/j.chemosphere.2023.139239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 05/29/2023] [Accepted: 06/14/2023] [Indexed: 06/30/2023]
Abstract
In this study, Density Functional Theory (DFT) calculations and experimental methods were used to evaluate MnO2 with 5 different facets for their selective adsorption of Pb (II) from wastewater containing Cd (II), Cu (II), Pb (II), and Zn (II). The DFT calculations were used to screen the selective adsorption capability of the facets and demonstrated that the MnO2 (3 1 0) facet has an excellent performance in selective adsorption of Pb (II) among all facets. The validity of DFT calculations was verified by comparing with the experimental results. MnO2 with different facets was prepared in a controlled manner and the characterizations confirmed that the lattice indices of the fabricated MnO2 have the desired facets. Adsorption performance experiments illustrated a high adsorption capacity (320.0 mg/g) on the (3 1 0) facet MnO2. The selectivity of adsorption of Pb (II) was 3-32 times greater than that of the other coexisting ions, i.e., Cd (II), Cu (II), and Zn (II)), which is consistent with results of the DFT calculations. Furthermore, DFT calculations of the adsorption energy, charge density difference, and projected density of states (PDOS) showed that the adsorption of Pb (II) on the MnO2 (3 1 0) facet is non-activated chemisorption. This study shows that it is feasible to use DFT calculations to quickly screen suitable adsorbents for environmental applications.
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Affiliation(s)
- Fan Wang
- New Materials Institute, University of Nottingham, Ningbo 315100, China; Department of Chemical and Environmental Engineering, University of Nottingham Ningbo China, Ningbo 315100, China
| | - Yueying Zheng
- New Materials Institute, University of Nottingham, Ningbo 315100, China; Department of Chemical and Environmental Engineering, University of Nottingham Ningbo China, Ningbo 315100, China
| | - Huiwen Zhu
- New Materials Institute, University of Nottingham, Ningbo 315100, China; Department of Chemical and Environmental Engineering, University of Nottingham Ningbo China, Ningbo 315100, China
| | - Tao Wu
- New Materials Institute, University of Nottingham, Ningbo 315100, China; Department of Chemical and Environmental Engineering, University of Nottingham Ningbo China, Ningbo 315100, China; Key Laboratory of Carbonaceous Wastes Processing and Process Intensification of Zhejiang Province, Ningbo 315100, China.
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Erguler H, Ferreira N, Adonis M, Koushiou M. Moderating Impact of Dispositional Mindfulness in the Relationship Between Future Expectancies and Psychological Well-Being. Psychol Rep 2023:332941231175614. [PMID: 37202172 DOI: 10.1177/00332941231175614] [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: 05/20/2023]
Abstract
OBJECTIVES Mindfulness has been studied under cultivated or dispositional divisions where the latter has strong implications for psychological well-being in meditators and non-meditators alike. In addition, future expectations, or prospections, regarding the occurrence of important events in a person's future have recently been hypothesized to be the main cause behind symptoms of major depression. There is, however, a lack of empirical research looking at possible links between dispositional mindfulness, as understood in its facet structure, and future expectations as understood via perceived risk of occurrence and vividness of mental imagery when prompted to imagine a given list of positive and negative prospective event item lists. Therefore, this research aimed at examining how dispositional mindfulness may be related to probabilistic risk assessments of positive and negative future events (Stage I); and how mental imagery vividness may be moderated by mindfulness facets (Stage II). METHODS Both stages included healthy participants and incorporated the PROCESS macro for moderated regression analysis done with the SPSS software. Stage I included 204 voluntary college students, and Stage II was conducted online with a public sample of 110 adults. RESULTS Although no interaction effect was found in Stage I, nonreactivity to inner experience facet of dispositional mindfulness moderated the relationship between negative imagery vividness and psychological distress in Stage II (F(1,103) = 4.00, R2 change=.018, p <.05). CONCLUSIONS This is a novel finding that could inform a future line of research looking into the relationship between prospection and mindfulness, holding a potential for informing research on mindfulness-based interventions.
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Affiliation(s)
- Hasan Erguler
- The Department of Psychology, Eastern Mediterranean University, Famagusta, Cyprus (Northern, via Mersin 10 Turkey)
| | - Nuno Ferreira
- The Department of Psychology, University of Nicosia, Nicosia, Cyprus
| | - Marios Adonis
- The Department of Psychology, University of Nicosia, Nicosia, Cyprus
| | - Maria Koushiou
- The Department of Psychology, University of Nicosia, Nicosia, Cyprus
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Li X, Ge L, Du Y, Huang H, Ha Y, Fu Z, Lu Y, Yang W, Wang X, Cheng Z. Highly Oxidized Oxide Surface toward Optimum Oxygen Evolution Reaction by Termination Engineering. ACS Nano 2023; 17:6811-6821. [PMID: 36943144 DOI: 10.1021/acsnano.3c00387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The oxygen evolution reaction (OER) is a critical step for sustainable fuel production through electrochemistry process. Maximizing active sites of nanocatalyst with enhanced intrinsic activity, especially the activation of lattice oxygen, is gradually recognized as the primary incentive. Since the surface reconfiguration to oxyhydroxide is unavoidable for oxygen-activated transition metal oxides, developing a surface termination like oxyhydroxide in oxides is highly desirable. In this work, we demonstrate an unusual surface termination of (111)-facet Co3O4 nanosheet that is exclusively containing edge-sharing octahedral Co3+ similar to CoOOH that can perform at approximately 40 times higher current density at 1.63 V (vs RHE) than commercial RuO2. It is found that this surface termination has an oxidized oxygen state in contrast to standard Co-O systems, which can serve as active site independently, breaking the scaling relationship limit. This work forwards the applications of oxide electrocatalysts in the energy conversion field by surface termination engineering.
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Affiliation(s)
- Xiaoning Li
- Institute for Superconducting and Electronic Materials (ISEM), Australia Institute for Innovative Materials, Innovation Campus, University of Wollongong, North Wollongong, NSW 2500, Australia
| | - Liangbing Ge
- Department of Materials Science and Engineering & Anhui Laboratory of Advanced Photon Science and Technology, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Yumeng Du
- Institute for Superconducting and Electronic Materials (ISEM), Australia Institute for Innovative Materials, Innovation Campus, University of Wollongong, North Wollongong, NSW 2500, Australia
| | - Haoliang Huang
- Department of Materials Science and Engineering & Anhui Laboratory of Advanced Photon Science and Technology, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Yang Ha
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Zhengping Fu
- Department of Materials Science and Engineering & Anhui Laboratory of Advanced Photon Science and Technology, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Yalin Lu
- Department of Materials Science and Engineering & Anhui Laboratory of Advanced Photon Science and Technology, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Wanli Yang
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Xiaolin Wang
- Institute for Superconducting and Electronic Materials (ISEM), Australia Institute for Innovative Materials, Innovation Campus, University of Wollongong, North Wollongong, NSW 2500, Australia
| | - Zhenxiang Cheng
- Institute for Superconducting and Electronic Materials (ISEM), Australia Institute for Innovative Materials, Innovation Campus, University of Wollongong, North Wollongong, NSW 2500, Australia
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Peckham ME, Miller TS, Amrhein TJ, Hirsch JA, Kranz PG. Image-Guided Spine Interventions for Pain: Ongoing Controversies. AJR Am J Roentgenol 2023;:1-10. [PMID: 36541595 DOI: 10.2214/AJR.22.28643] [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: 12/24/2022]
Abstract
An expanding array of image-guided spine interventions have the potential to provide immediate and effective pain relief. Innovations in spine intervention have proceeded rapidly, with clinical adoption of new techniques at times occurring before the development of bodies of evidence to establish efficacy. Although new spine interventions have been evaluated by clinical trials, acceptance of results has been hindered by controversies regarding trial methodology. This article explores controversial aspects of four categories of image-guided interventions for painful conditions: spine interventions for postdural puncture headache resulting from prior lumbar procedures, epidural steroid injections for cervical and lumbar radiculopathy, interventions for facet and sacroiliac joint pain, and vertebral augmentations for compression fractures. For each intervention, we summarize the available literature, with an emphasis on persistent controversies, and discuss how current areas of disagreement and challenge may shape future research and innovation. Despite the ongoing areas of debate regarding various aspects of these procedures, effective treatments continue to emerge and show promise for aiding relief of a range of debilitating conditions.
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Elliott E, Bedingfield K, Huang J, Hu S, de Nijs B, Demetriadou A, Baumberg JJ. Fingerprinting the Hidden Facets of Plasmonic Nanocavities. ACS Photonics 2022; 9:2643-2651. [PMID: 35996364 PMCID: PMC9389613 DOI: 10.1021/acsphotonics.2c00116] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Indexed: 05/30/2023]
Abstract
The optical properties of nanogap plasmonic cavities formed by a NanoParticle-on-Mirror (NPoM, or patch antenna) are determined here, across a wide range of geometric parameters including the nanoparticle diameter, gap refractive index, gap thickness, facet size and shape. Full understanding of the confined optical modes allows these nanocavities to be utilized in a wide range of experiments across many fields. We show that the gap thickness t and refractive index n are spectroscopically indistinguishable, accounted for by a single gap parameter G = n/t 0.47. Simple tuning of mode resonant frequencies and strength is found for each quasi-normal mode, revealing a spectroscopic "fingerprint" for each facet shape, on both truncated spherical and rhombicuboctahedral nanoparticles. This is applied to determine the most likely nanoscale morphology of facets hidden below each NPoM in experiment, as well as to optimize the constructs for different applications. Simple scaling relations are demonstrated, and an online tool for general use is provided.
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Affiliation(s)
- Eoin Elliott
- NanoPhotonics
Centre, Cavendish Laboratory, University
of Cambridge, Cambridge CB3 0HE, United Kingdom
| | - Kalun Bedingfield
- School
of Physics and Astronomy, University of
Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom
| | - Junyang Huang
- NanoPhotonics
Centre, Cavendish Laboratory, University
of Cambridge, Cambridge CB3 0HE, United Kingdom
| | - Shu Hu
- NanoPhotonics
Centre, Cavendish Laboratory, University
of Cambridge, Cambridge CB3 0HE, United Kingdom
| | - Bart de Nijs
- NanoPhotonics
Centre, Cavendish Laboratory, University
of Cambridge, Cambridge CB3 0HE, United Kingdom
| | - Angela Demetriadou
- School
of Physics and Astronomy, University of
Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom
| | - Jeremy J Baumberg
- NanoPhotonics
Centre, Cavendish Laboratory, University
of Cambridge, Cambridge CB3 0HE, United Kingdom
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Li T, Wang Q, Wang Z. Oxygen Vacancy Injection on (111) CeO 2 Nanocrystal Facets for Efficient H 2O 2 Detection. Biosensors (Basel) 2022; 12:bios12080592. [PMID: 36004988 PMCID: PMC9405991 DOI: 10.3390/bios12080592] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 07/25/2022] [Accepted: 07/30/2022] [Indexed: 05/14/2023]
Abstract
Facet and defect engineering have achieved great success in improving the catalytic performance of CeO2, but the inconsistent reports on the synergistic effect of facet and oxygen vacancy and the lack of investigation on the heavily doped oxygen vacancy keeps it an attractive subject. Inspired by this, CeO2 nanocrystals with selectively exposed crystalline facets (octahedron, cube, sphere, rod) and abundant oxygen vacancies have been synthesized to investigate the synergistic effect of facet and heavily doped oxygen vacancy. The contrasting electrochemical behavior displayed by diverse reduced CeO2 nanocrystals verifies that oxygen vacancy acts distinctly on different facets. The thermodynamically most stable CeO2 octahedron enclosed by heavily doped (111) facets surprisingly exhibited the optimum non-enzymatic H2O2 sensing performance, with a high sensitivity (128.83 µA mM-1 cm-2), a broad linear range (20 µM~13.61 mM), and a low detection limit (1.63 µM). Meanwhile, the sensor presented satisfying selectivity, repeatability, stability, as well as its feasibility in medical disinfectants. Furthermore, the synergistic effect of facet and oxygen vacancy was clarified by the inclined distribution states of oxygen vacancy and the electronic transmission property. This work enlightens prospective research on the synergistic effect of alternative crystal surface engineering strategies.
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Zhang J, Li K, Xue Y, Feng Z. Network Analysis of the Relationship Between Trait Depression and Impulsiveness Among Youth. Front Psychiatry 2022; 13:916332. [PMID: 35782437 PMCID: PMC9247242 DOI: 10.3389/fpsyt.2022.916332] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 05/13/2022] [Indexed: 12/02/2022] Open
Abstract
Objective Both impulsiveness and trait depression are the trait-level risk factors for depressive symptoms. However, the two traits overlap and do not affect depressive symptoms independently. This study takes impulsiveness and trait depression into a whole construct, aiming to find the complex associations among all facets and explore their relative importance in a trait network. It can help us find the key facets that need consideration in preventing depression. Materials and Methods We used the Barratt Impulsiveness Scale (BIS) and Trait Depression Scale (T-DEP) as measuring tools, conducted network analysis, and applied the Graphic Least Absolute Shrinkage and Selection Operator (GLASSO) algorithm to estimate the network structure and compute the linkage and centrality indexes. The accuracy and stability of the indexes were estimated through bootstrapping. All the computations were performed by R script and packages. Results We found that "trait anhedonia" was connected with "non-planning" and "cognitive" impulsiveness, while "trait dysthymia" was connected with "motor" impulsiveness. "Cognitive" impulsiveness had a statistically significant higher expected influence than "motor" impulsiveness and had the trend to be dominant in the network. "Trait dysthymia" had a statistically significant higher bridge expected influence than "cognitive" impulsiveness and had the trend to be the key facet linking impulsiveness with trait depression. "Non-only children" had higher network global strength than "only children." All indexes were accurate and stable. Conclusion The present study confirms the complex associations among facets of trait depression and impulsiveness, finding that "cognitive" impulsiveness and "trait dysthymia" are the two key factors in the network. The results imply that different facets of impulsiveness should be considered respectively regarding anhedonia and dysthymia. "Cognitive" impulsiveness and "trait dysthymia" are critical to the prevention of depression.
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Affiliation(s)
| | | | | | - Zhengzhi Feng
- Department of Medical Psychology, Army Medical University, Chongqing, China
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10
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Abstract
BACKGROUND Facet joint syndrome (FJS) pain is a significant contributor to back pain and has a high rate of opioid prescription. Unfortunately, there are a limited number of therapeutic options for these patients. OBJECTIVE To evaluate the safety and effectiveness of amniotic membrane/umbilical cord particulate (AM/UC) in managing FJS pain. METHODS A single-center, investigator-initiated, retrospective study was performed on consecutive patients with FJS pain who received intra- or peri-articular injection of AM/UC between July 1, 2018 and July 26, 2019. Primary outcome was change in Patient Global Impression of Change (PGIC) at 6 weeks, 3 months, 6 months, and 12 months to assess the self-reported percent improvement relative to baseline. Safety was assessed by AM/UC- and procedure-related complications. Paired t-tests were used to determine whether there is a statistically significant improvement of pain post-injection compared to baseline. RESULTS There were a total of 54 patients (69.7 ± 13.4 years; 31 female) presenting baseline pain score of 9.2 ± 1.0 despite prior treatments of activity modification (66.7%), NSAIDs (61.1%), opioids (37.0%), and physical therapy (35.2%). Mean GPIC improvement was 65.3%, 67.5%, 56.9%, and 56.7% among responders30, respectively. There were no complications. CONCLUSION This study supports the safety and effectiveness of AM/UC particulate injection in managing FJS pain.
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Barbachan Mansur NS, Lalevee M, Maly C, Dibbern K, Lee HY, Godoy-Santos AL, Lintz F, de Cesar Netto C. Association Between Middle Facet Subluxation and Foot and Ankle Offset in Progressive Collapsing Foot Deformity. Foot Ankle Int 2022; 43:96-100. [PMID: 34581232 DOI: 10.1177/10711007211040820] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Subtalar middle facet (MF) subluxation was recognized as a reliable marker for progressive collapsing foot deformity (PCFD) diagnosis. Foot and Ankle Offset (FAO) is an established measurement, predictive of malalignment severity. The objective of this study was to assess the potential association between MF subluxation and FAO in PCFD patients. METHODS 56 individuals with flexible PCFD (74 feet) were assessed. Two blinded foot and ankle surgeons calculated MF uncoverage, MF incongruence, and FAO. Agreement was quantified using intraclass correlation coefficient (ICC). A multivariate regression analysis and partition prediction models were applied to assess relationship between values. RESULTS All ICCs were >0.80. MF subluxation and FAO were found to be correlated (rs = 0.56; P < .0001). Changes in the MF subluxation were noticeably explained by FAO and BMI (R2 = 0.33). MF incongruence was not correlated with the assessed variables (P = .10). In this cohort, an MF subluxation of 27.5% was a threshold for increased FAO (FAO of 3.4%±2.4% when below; FAO of 8.0% ±3.5% when above). CONCLUSION We found a correlation between MF subluxation and FAO. An MF subluxation of 27.5% was found to be a threshold for higher FAO, which corresponded to a greater malalignment. These data may help surgeons optimize treatment decisions in PCFD patients. LEVEL OF EVIDENCE Level III, retrospective comparative study.
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Affiliation(s)
- Nacime Salomão Barbachan Mansur
- Department of Orthopedics and Rehabilitation, Carver College of Medicine, University of Iowa (UIOWA), Iowa City, IA, USA.,Department of Orthopedics and Traumatology, Escola Paulista de Medicina - UNIFESP, São Paulo, Brazil
| | - Matthieu Lalevee
- Department of Orthopedics and Rehabilitation, Carver College of Medicine, University of Iowa (UIOWA), Iowa City, IA, USA.,Department of Orthopedic Surgery, Rouen University Hospital, Rouen, France
| | - Connor Maly
- Department of Orthopedics and Rehabilitation, Carver College of Medicine, University of Iowa (UIOWA), Iowa City, IA, USA
| | - Kevin Dibbern
- Department of Orthopedics and Rehabilitation, Carver College of Medicine, University of Iowa (UIOWA), Iowa City, IA, USA
| | - Hee Young Lee
- Department of Orthopedics and Rehabilitation, Carver College of Medicine, University of Iowa (UIOWA), Iowa City, IA, USA
| | | | | | - Cesar de Cesar Netto
- Department of Orthopedics and Rehabilitation, Carver College of Medicine, University of Iowa (UIOWA), Iowa City, IA, USA
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Candan B, Gungor S. Cooled-radiofrequency neurotomy for the treatment of chronic lumbar facet (zygapophyseal) joint pain: A retrospective study. Medicine (Baltimore) 2021; 100:e28459. [PMID: 34967387 PMCID: PMC8718233 DOI: 10.1097/md.0000000000028459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 12/08/2021] [Indexed: 01/05/2023] Open
Abstract
Cooled-radiofrequency (CRFA) is a newer technique and may have some theoretical advantages over traditional radiofrequency ablation (TRFA). In this study, we aimed to investigate the efficacy and safety of CRFA for the treatment of lumbar facet joint-mediated pain. In this retrospective study, we evaluated 185 CRFA performed on 105 patients. All patients with axial lower back who received the preliminary diagnosis of lumbar facet joint-mediated pain and refractory to conservative therapy underwent diagnostic medial branch blocks. CRFA was recommended to those patients who responded favorably to two sets of diagnostic medial branch blocks. Pain scores in numeric rating scale (NRS) were recorded pre-treatment and post-treatment at different time-points. The primary outcome measure was to report descriptive NRS score and average % improvement from baseline at each time point. A significant pain relief was determined by a decrease of ≥50% of mean NRS. Secondary outcome measure was the time to repeat treatment with subsequent CRFA. Adverse events were also recorded.Primary outcome measure determined as the improvement in NRS, for at least 50% or more, was achieved in both 1st (4-8 weeks) and 2nd (>2-6 months) follow-up (FU) with 60.5% and 53.6% reduction in NRS respectively. Our subgroup analysis comparing the younger (<50) and older (≥50) age groups showed superior pain relief with CRFA in the older (≥50) age group, both in the 1st (4-8 weeks) and 2nd (>2-6 months) FU time points (63.4% and 58.4% reduction in NRS, respectively). Cooled-radiofrequency ablation is an effective and safe procedure for the treatment of chronic lumbar facet joint related pain. The duration of pain relief was comparable to traditional radiofrequency ablation as reported in the literature.
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Affiliation(s)
- Burcu Candan
- Department of Anesthesiology, Critical Care and Pain Management, Hospital for Special Surgery, New York, New York
| | - Semih Gungor
- Department of Anesthesiology, Critical Care and Pain Management, Hospital for Special Surgery, New York, New York
- Department of Anesthesiology, Weill Cornell Medicine, New York, New York
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Hou X, Zeng H, Chi X, Hu X. Pathogen Receptor Membrane-Coating Facet Structures Boost Nanomaterial Immune Escape and Antibacterial Performance. Nano Lett 2021; 21:9966-9975. [PMID: 34812644 DOI: 10.1021/acs.nanolett.1c03427] [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] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Nanomaterials show great potential for the treatment of bacterial infections, but their effects remain limited by low antibacterial efficiency and immune clearance. Facet-dependent nanozymes coated with pathogen receptor membranes were fabricated, providing an approach for producing superphotothermal antibacterial nanomaterials with high biocompatibility and low immune clearance. (100)- and (112)-Faceted CuFeSe2 presented excellent photothermal conversion efficiency (46%). However, the peroxidase-like activity of (100)-faceted CuFeSe2 enhanced the decomposition of H2O2 to hydroxyl radicals (•OH) and was markedly greater than that of (112)-faceted CuFeSe2, with nearly 100% of Staphylococcus aureus being killed under near-infrared (NIR) irradiation. Importantly, bacteria-pretreated immune membranes (i.e., pathogen receptor membranes) coated with CuFeSe2 exhibited superior S. aureus-binding ability, presented obvious immune-evading capability, and resulted in targeted delivery to infected sites. As a proof-of-principle demonstration, these findings hold promise for the use of pathogen receptor membrane-coated facet-dependent nanomaterials in clinical applications and the treatment of bacterial infections.
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Affiliation(s)
- Xuan Hou
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 30080, People's Republic of China
| | - Hui Zeng
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 30080, People's Republic of China
| | - Xue Chi
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 30080, People's Republic of China
| | - Xiangang Hu
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 30080, People's Republic of China
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14
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Shinya H, Nakano M, Ohtani N. Undulated Step Structure on the (0001¯) Facet of Physical Vapor Transport-Grown 4H-SiC Crystals. Materials (Basel) 2021; 14:6816. [PMID: 34832220 DOI: 10.3390/ma14226816] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 11/07/2021] [Accepted: 11/09/2021] [Indexed: 11/16/2022]
Abstract
The step structure on the (0001¯)C facet of 4H-SiC boules grown by the physical vapor transport growth method with different nitrogen doping concentrations was examined in various scales, using different types of microscopy, such as differential interference contrast optical microscopy (DICM) and atomic force microscopy (AFM). DICM observations unveiled characteristic macroscopic surface features of the facet dependent on the nitrogen doping concentration. AFM observations revealed the existence of step trains of half unit-cell height (0.5 nm) on the facet and found that their separation was undulated with a characteristic wavelength dependent on the nitrogen doping concentration; the higher the nitrogen concentration, the longer was the undulation wavelength of step separation. Based on these results, we discussed the origin and formation mechanism of the separation-undulated step structure observed on the (0001¯)C facet of nitrogen-doped 4H-SiC boules.
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15
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Huang M, Liu C, Cui P, Wu T, Feng X, Huang H, Zhou J, Wang Y. Facet-Dependent Photoinduced Transformation of Cadmium Sulfide (CdS) Nanoparticles. Environ Sci Technol 2021; 55:13132-13141. [PMID: 34519482 DOI: 10.1021/acs.est.1c04026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Microbial-mediated transformation of anthropogenic Cd2+ controls its distribution, bioavailability, and potential risks. However, the processes readily form CdS nanoparticles (CdS-NPs), which exhibit dissolution behavior different from that of larger sized particles. Here, we investigated the effects of morphologies and facets of CdS-NPs on their photoinduced dissolution. Three CdS-NPs, CdS-sphere, CdS-rod, and CdS-sheet, and one nanosized biogenic CdS (Bio-CdS) were synthesized with different dominant facets of {101}, {100}, {001}, and {111} and thus distinct surface chemistry. As explored by HRTEM, EPR, and DFT calculations, photogenerated e-/h+ pairs were more likely to generate on CdS-sheet surfaces due to higher surface energies and a narrower band gap, facilitating the formation of •OH and thereby faster dissolution (kobs = 6.126-6.261 × 10-2 h-1). The wider band gaps of CdS-sphere and CdS-rod caused less formation of O2•- and •OH, leading to slower oxidative dissolutions (kobs = 0.090-0.123 and 2.174-3.038 × 10-2 h-1, respectively). Given the similar surface energy as that of CdS-sheet, the dissolution rate of Bio-CdS was close to that of CdS-rod and CdS-sheet, which was 1.6-3.5 times faster than that of larger sized CdS, posing higher environmental risks than thought. Altogether, this work revealed the facet effects on the dissolution of CdS-NPs, manifesting a deeper understanding of metal sulfides' environmental behaviors.
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Affiliation(s)
- Meiying Huang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science Chinese Academy of Sciences, No. 71 East Beijing Road, Nanjing 210008, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Cun Liu
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science Chinese Academy of Sciences, No. 71 East Beijing Road, Nanjing 210008, China
| | - Peixin Cui
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science Chinese Academy of Sciences, No. 71 East Beijing Road, Nanjing 210008, China
| | - Tongliang Wu
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science Chinese Academy of Sciences, No. 71 East Beijing Road, Nanjing 210008, China
| | - Xionghan Feng
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Hui Huang
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Jing Zhou
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science Chinese Academy of Sciences, No. 71 East Beijing Road, Nanjing 210008, China
| | - Yujun Wang
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science Chinese Academy of Sciences, No. 71 East Beijing Road, Nanjing 210008, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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16
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Ng DX, Lin PKF, Marsh NV, Chan KQ, Ramsay JE. Associations Between Openness Facets, Prejudice, and Tolerance: A Scoping Review With Meta-Analysis. Front Psychol 2021; 12:707652. [PMID: 34650474 PMCID: PMC8506218 DOI: 10.3389/fpsyg.2021.707652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 08/24/2021] [Indexed: 11/21/2022] Open
Abstract
The personality factor of openness to experience, which encompasses curiosity, imagination, and a desire for new experiences, has been associated negatively with prejudice and positively with the closely related value of tolerance. While these relationships have been reviewed at the factor level, there has been no review of research at the lower facet level. This review aims to uncover the relationships between the facets of openness and the constructs of prejudice and tolerance. We conducted a preregistered scoping review with meta-analysis following the recommended guidelines from Joanna Briggs Institute. A total of 2,349 articles were reviewed, with 16 primary research articles (or 17 studies) meeting the criteria for inclusion. Aggregated effect sizes via random-effect meta-analysis revealed that all revised neuroticism-extraversion-openness personality inventory (NEO-PI-R) and international personality item pool (IPIP)-based facets of openness significantly predicted prejudice and tolerance. Out of the three measures [i.e., NEO-PI-R, IPIP-NEO, and honesty-humility, emotionality, extraversion, agreeableness, conscientiousness, and openness to experience personality inventory (HEXACO-PI), and the facets of openness examined], the NEO-PI-R facet of value was most strongly associated with prejudice. In contrast, the NEO-PI-R facet of aesthetics was the facet most strongly associated with tolerance. However, these results should be treated as preliminary in light of the small number of meta-analyzed studies and more primary research studies are needed to confirm the trends found in this review. This review represents the first step in the systematic investigation of the link between the facets of openness and components of prejudice and tolerance and contributes toward explaining prejudice and tolerance.
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Affiliation(s)
- D. X. Ng
- School of Social and Health Sciences, James Cook University, Singapore, Singapore
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Ka L, R E, K W, G J, Lje B. Associations between Facets and Aspects of Big Five Personality and Affective Disorders:A Systematic Review and Best Evidence Synthesis. J Affect Disord 2021; 288:175-188. [PMID: 33901698 DOI: 10.1016/j.jad.2021.03.061] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 03/03/2021] [Accepted: 03/19/2021] [Indexed: 12/30/2022]
Abstract
BACKGROUND Big Five personality traits correlate with affective disorders, with neuroticism considered a risk factor, and conscientiousness and extroversion considered protective factors. However, the relationships between affective disorders and lower-order personality facets and aspects are less clear. METHOD A systematic review was carried out to identify studies measuring associations between lower-order personality constructs and affective disorders. Big Five facets were measured using the NEO-PI-R, and aspects using the BFAS. PsycINFO, EMBASE, MedLine and OpenGrey were searched from January 1st, 1985 to June 30th, 2020. Fifteen studies met criteria and reported a total of 408 associations. Data were analysed using best evidence synthesis. RESULTS Most facets of neuroticism were positively associated with affective disorders. Positive emotion in extroversion, and competence and self-discipline in conscientiousness, were negatively associated with affective disorders. Trust in agreeableness, and actions in openness, were negatively associated with anxiety disorders, whereas fantasy in openness was positively associated with anxiety disorders. At the aspect level, withdrawal in neuroticism was positively associated with MDD, whereas industriousness in conscientiousness was negatively associated with MDD. LIMITATIONS Due to the use the heterogenous measures between studies, a meta-analysis could not be performed. Only Big Five personality constructs were investigated, limited to BFAS personality aspects, and NEO-PI-R personality facets. CONCLUSIONS Neuroticism, positive emotion, competence and self-discipline correlate with various anxiety and depressive disorders. These facets may be endophenotypes for affective disorders in general. Future research is needed to investigate mediating pathways between personality facets and affective disorders.
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Affiliation(s)
- Lyon Ka
- Division of Neuroscience and Experimental Psychology, University of Manchester, M13 9PG.
| | - Elliott R
- Division of Neuroscience and Experimental Psychology, University of Manchester, M13 9PG
| | - Ware K
- Division of Psychology and Mental Health, University of Manchester, M13 9PL
| | - Juhasz G
- Department of Pharmacodynamics, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary; SE-NAP2 Genetic Brain Imaging Migraine Research Group, Hungarian Brain Research Program, Semmelweis University, Budapest, Hungary
| | - Brown Lje
- Division of Psychology and Mental Health, University of Manchester, M13 9PL
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Patel T, Watterson C, McKenzie-Brown AM, Spektor B, Egan K, Boorman D. Lumbar Spondylolisthesis Progression: What is the Effect of Lumbar Medial Branch Nerve Radiofrequency Ablation on Lumbar Spondylolisthesis Progression? A Single-Center, Observational Study. J Pain Res 2021; 14:1193-1200. [PMID: 33976569 PMCID: PMC8104986 DOI: 10.2147/jpr.s310238] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 04/01/2021] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Radiofrequency ablation (RFA) is a denervation therapy commonly performed for pain of facet etiology. Degenerative spondylolisthesis, a malalignment of the spinal vertebrae, may be a co-existing condition contributing to pain; yet the effect of RFA on advancing listhesis is unknown. To the extent that denervating RFA may weaken paraspinal muscles that provide stability to the spine, the therapy can potentially contribute to progressive spinal instability. METHODS Single-center, prospective, observational pilot study in an interventional pain practice to test the hypothesis that RFA of painful facets in the setting of spondylolisthesis may contribute to advancement of further degenerative spondylolisthesis. Fifteen participants with pre-existing degenerative Grade I or Grade II spondylolisthesis and coexisting axial lumbar pain underwent lumbar RFA encompassing spondylolisthesis level and followed with post-RFA imaging at 12 months and beyond to measure percent change in spondylolisthesis. RESULTS The primary outcome was the percent advancement of spondylolisthesis per year measured on post-RFA lateral lumbar spine imaging compared with non-intervention inferred baseline advancement of 2% per very limited observational studies. Among the 15 participants enrolled, 14 completed the study (median age 66; 64.3% women; median BMI 33.5; mean follow-up time 23.9 months). The mean advancement of spondylolisthesis per year after RFA was 1.30% (95% CI -0.14 to 2.78%), with 9/14 below 1.25%. CONCLUSION Among patients with lumbar pain originating from facets in the setting of degenerative spondylolisthesis who underwent lumbar RFA, the observed advancement of spondylolisthesis is clinically similar to the estimated maximum baseline of 2% per year change. The study findings did not find a destabilizing effect of lumbar RFA in advancing spondylolisthesis in this patient population.
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Affiliation(s)
- Trusharth Patel
- Department of Anesthesiology, Division of Pain Management, Emory University School of Medicine, Atlanta, GA, 30308, USA
| | - Christopher Watterson
- Department of Radiology, Emory University School of Medicine, Atlanta, GA, 30308, USA
| | | | - Boris Spektor
- Department of Anesthesiology, Emory University School of Medicine, Atlanta, GA, 30308, USA
| | - Katherine Egan
- Department of Anesthesiology, Emory University School of Medicine, Atlanta, GA, 30308, USA
| | - David Boorman
- Department of Anesthesiology, Emory University School of Medicine, Atlanta, GA, 30308, USA
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Abstract
Back and neck pain have become primary reasons for disability and healthcare spending globally. While the causes of back pain are multifactorial, intervertebral disc degeneration is frequently cited as a primary source of pain. The annulus fibrosus (AF) and nucleus pulposus (NP) subcomponents of the disc are common targets for regenerative therapeutics. However, disc degeneration is also associated with degenerative changes to adjacent spinal tissues, and successful regenerative therapies will likely need to consider and address the pathology of adjacent spinal structures beyond solely the disc subcomponents. This review summarises the current state of knowledge in the field regarding associations between back pain, disc degeneration, and degeneration of the cartilaginous and bony endplates, the AF-vertebral body interface, the facet joints and spinal muscles, in addition to a discussion of regenerative strategies for treating pain and degeneration from a whole motion segment perspective.
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Affiliation(s)
| | | | | | - S E Gullbrand
- Corporal Michael J. Crescenz VA Medical Centre, Research, Building 21, Rm A214, 3900 Woodland Ave, Philadelphia, PA 19104,
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20
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Hyatt CS, Chester DS, Zeichner A, Miller JD. Facet-level analysis of the relations between personality and laboratory aggression. Aggress Behav 2020; 46:266-277. [PMID: 32149387 DOI: 10.1002/ab.21887] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 12/17/2019] [Accepted: 01/21/2020] [Indexed: 01/08/2023]
Abstract
Multiple reviews and meta-analyses have identified the low pole of the Five-Factor Model (FFM) Agreeableness (also called Antagonism) as the primary domain-level personality correlates of aggression across self-report and behavioral methodologies. In the current study, we expand on this literature by investigating the relations between FFM facets and aggressive behavior as measured by laboratory competitive reaction time tasks (CRTTs). Across three samples (total N = 639), we conducted weighted mean analyses, multiple regression analyses, and dominance analyses to determine which FFM facets were the strongest predictors of aggression within and across domains. These analyses suggested that facets of Agreeableness were among the strongest consistent predictors of CRTT aggression, including Sympathy (r = -.21) and Cooperation (r = -.14), but facets from other FFM domains also yielded meaningful relations (e.g., Anger from Neuroticism; r = .17). We conclude by discussing these results in the context of controversies surrounding laboratory aggression paradigms and emphasizing the importance of considering small effect sizes in the prediction of societally harmful behavior like aggression.
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Affiliation(s)
| | - David S. Chester
- Department of PsychologyVirginia Commonwealth University Richmond Virginia
| | - Amos Zeichner
- Department of PsychologyUniversity of Georgia Athens Georgia
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21
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Abstract
Anatomic course of medial branches in the thoracic spine is significantly different. Cooled RFA (CRFA) is a newer technique that can create a larger spherical lesion with a potential to compensate for the anatomic variability of the medial branches in the thoracic spine. Our retrospective study aimed to investigate the efficacy and the adverse effects of the CRFA in the treatment of thoracic facet-related pain.For this retrospective study, we evaluated 40 CRFA performed on 23 patients. The patients with diagnosis of thoracic facet joint-related pain underwent CRFA. Pain scores in numeric rating scale (NRS) were recorded at pretreatment and posttreatment at different time-points. The primary outcome measure was to report descriptive NRS score and average % improvement from baseline at each time point. A significant pain relief was determined by a decrease of ≥ 50% of mean NRS. Secondary outcome measure was the time to repeat treatment with subsequent CRFA. Adverse events were also recorded.Improvement of average pain level was 20.72% in the 1st follow-up (FU) (4-8 weeks), 53% in the 2nd FU (2-6 months), and 37.58% in the 3rd FU (6-12 months). Subgroup analysis was done based on age cutoff (age in years ≤ 50 versus >50), and pretreatment NRS (≤7 versus >7). Patients with age ≤50 and NRS score >7 experienced the best pain relief in the 2nd FU period (2-6 months). The patients with age > 50 and NRS pain level ≤7 showed steadily increased benefit both in the 2nd FU (2-6 months) and 3rd FU (6-12 months).This is the first clinical study to evaluate the efficacy and adverse effects of CRFA in the thoracic spine for facet joint-related pain. Our results suggest that CRFA procedure is an effective treatment modality for thoracic facet-related pain. Our subgroup analysis demonstrated that the pain relief and duration varies with the age and the pretreatment pain levels.
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Affiliation(s)
- Semih Gungor
- Division of Pain Medicine, Department of Anesthesiology, Critical Care and Pain Management, Hospital for Special Surgery
- Department of Anesthesiology, Weill Cornell Medicine, New York, NY
| | - Burcu Candan
- Near East University School of Medicine, Department of Anesthesiology and Reanimation, Pain Clinic, Nicosia, Northern Cyprus
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22
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Zehra U, Cheung JPY, Bow C, Lu W, Samartzis D. Multidimensional vertebral endplate defects are associated with disc degeneration, modic changes, facet joint abnormalities, and pain. J Orthop Res 2019; 37:1080-1089. [PMID: 30515862 DOI: 10.1002/jor.24195] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Accepted: 08/25/2018] [Indexed: 02/04/2023]
Abstract
The aim of the current study was to investigate the multi-dimensional characteristics of lumbar endplate defects in humans in relation to disc degeneration and other MRI phenotypes as well as their role with pain and disability. A total of 108 subjects were recruited and underwent 3T MRI of the lumbar spine. Structural endplate defects were identified and their dimensions were measured in terms of maximum width and depth, and were then standardized to the actual width of the endplate and depth of the vertebral body, respectively. Both width and depth of all endplate defects in each subject were added separately and scores were assigned on the basis of size from 1 to 3. Combining both scores provided "cumulative endplate defect scores." Disc degeneration scores, Modic changes, disc displacement, HIZ, and facet joint changes were assessed. Subject demographics, pain profile, and Oswestry Disability Index (ODI) were also obtained. Endplate defects were observed in 67.5% of the subjects and in 13.5% of the endplates. All dimensions of endplate defects showed significance with disc degenerative scores, Modic changes, and posterior disc displacement (p < 0.05). Maximum width (p = 0.009) and its standardized value (p = 0.02), and cumulative endplate defect scores (p = 0.004) increased with narrow facet joints. Cumulative endplate defect scores showed a strong positive association with ODI (p < 0.05) compared to disc degenerative scores. Large size endplate defects were strongly associated with degenerative spine changes and more back-related disability. Findings from this study stress the need to assess endplate findings from a multi-dimensional perspective, whose role may have clinical utility. © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res.
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Affiliation(s)
- Uruj Zehra
- Department of Anatomy, University of Health Sciences, Lahore, Pakistan
| | - Jason Pui Yin Cheung
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Pokfulam, Hong Kong
| | - Cora Bow
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Pokfulam, Hong Kong
| | - William Lu
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Pokfulam, Hong Kong
| | - Dino Samartzis
- Department of Orthopaedic Surgery, RUSH University Medical Center, Chicago.,International Spine Research and Innovation Initiative, RUSH University Medical Center, Chicago
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Paraskevas GK, Koutsouflianiotis KN, Iliou K, Syrmos N, Ioannidis O, Noussios G. Costoclavicular Joint: An Osteological Study on Clavicles with Clinical Relevance. Cureus 2019; 11:e4409. [PMID: 31245198 PMCID: PMC6559695 DOI: 10.7759/cureus.4409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Introduction The current study aims to detect the incidence of occurrence of a morphological variant of the impression for the costoclavicular ligament, that is a faceted apophysis of the clavicle which participates in the formation of an aberrant joint, the so-called costoclavicular joint. Methods A material of 208 dry clavicles, 107 of right and 101 of left side derived from an osteological collection, was examined in order to detect the likely presence of facet apophysis at the clavicular area of impression for the costoclavicular ligament. Results We observed three cases of oval-shaped faceted apophysis, thus an incidence of 1.44%, two in right clavicles and one in left clavicle. Conclusion The awareness of such a rare joint, thus the costoclavicular joint, is important for the physician, since such a joint may be mistaken for occupying space lesion, induce pain when it is osteoarthritic and decrease the costoclavicular space leading to difficulties in subclavian vein catheterization.
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Affiliation(s)
| | | | - Kalliopi Iliou
- Psychiatry, Aristotle University of Thessaloniki, Thessaloniki, GRC
| | - Nikolaos Syrmos
- Neurological Surgery, Aristotle University of Thessaloniki, Thessaloniki, GRC
| | - Orestis Ioannidis
- Surgery, Medical School, Aristotle University of Thessaloniki, Thessaloniki, GRC
| | - George Noussios
- Otolaryngology, Aristotle University of Thessaloniki, Thessaloniki, GRC
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Li W, Yang KR, Yao X, He Y, Dong Q, Brudvig GW, Batista VS, Wang D. Facet-Dependent Kinetics and Energetics of Hematite for Solar Water Oxidation Reactions. ACS Appl Mater Interfaces 2019; 11:5616-5622. [PMID: 29792412 DOI: 10.1021/acsami.8b05190] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The performance of a photoelectrochemical (PEC) system is highly dependent on the charge separation, transport and transfer characteristics at the photoelectrode|electrolyte interface. Of the factors that influence the charge behaviors, the crystalline facets of the semiconductor in contact with the electrolyte play an important role but has been poorly studied previously. Here, we present a study aimed at understanding how the different facets of hematite affect the charge separation and transfer behaviors in a solar water oxidation reaction. Specifically, hematite crystallites with predominantly {012} and {001} facets exposed were synthesized. Density functional theory (DFT) calculations revealed that hematite {012} surfaces feature higher OH coverage, which was confirmed by X-ray photoelectron spectroscopy (XPS). These surface OH groups act as active sites to mediate water oxidation reactions, which plays a positive role for the PEC system. These surface OH groups also facilitate charge recombination, which compromises the charge separation capabilities of hematite. Indeed, intensity modulated photocurrent spectroscopy (IMPS) confirmed that hematite {012} surfaces exhibit higher rate constants for both charge transfer and recombination. Open circuit potential (OCP) measurements revealed that the hematite {012} surface exhibits a greater degree of Fermi level pinning effect. Our results shed light on how different surface crystal structures may change surface kinetics and energetics. The information is expected to contribute to efforts on optimizing PEC performance for practical solar fuel synthesis.
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Affiliation(s)
- Wei Li
- Department of Chemistry, Merkert Chemistry Center , Boston College , 2609 Beacon Street , Chestnut Hill , Massachusetts 02467 , United States
| | - Ke R Yang
- Department of Chemistry and Yale Energy Sciences Institute , Yale University , New Haven , Connecticut 06520-8107 , United States
| | - Xiahui Yao
- Department of Chemistry, Merkert Chemistry Center , Boston College , 2609 Beacon Street , Chestnut Hill , Massachusetts 02467 , United States
| | - Yumin He
- Department of Chemistry, Merkert Chemistry Center , Boston College , 2609 Beacon Street , Chestnut Hill , Massachusetts 02467 , United States
| | | | - Gary W Brudvig
- Department of Chemistry and Yale Energy Sciences Institute , Yale University , New Haven , Connecticut 06520-8107 , United States
| | - Victor S Batista
- Department of Chemistry and Yale Energy Sciences Institute , Yale University , New Haven , Connecticut 06520-8107 , United States
| | - Dunwei Wang
- Department of Chemistry, Merkert Chemistry Center , Boston College , 2609 Beacon Street , Chestnut Hill , Massachusetts 02467 , United States
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25
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Goldstein BL, Kotov R, Perlman G, Watson D, Klein DN. Trait and facet-level predictors of first-onset depressive and anxiety disorders in a community sample of adolescent girls. Psychol Med 2018; 48:1282-1290. [PMID: 28929975 DOI: 10.1017/s0033291717002719] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND Individual differences in neuroticism, extraversion, and conscientiousness are associated with, and may predict onset of, internalizing disorders. These general traits can be parsed into facets, but there is a surprising paucity of research on facet risk for internalizing disorders. We examined general traits and facets of neuroticism, extraversion, and conscientiousness in predicting first onsets of depressive and anxiety disorders. METHODS A community sample of 550 adolescent females completed general and facet-level personality measures and diagnostic interviews. Interviews were re-administered 18 months later. RESULTS First onsets of depressive disorders were predicted by neuroticism, extraversion, and conscientiousness. Facets predicting first onset of depression included depressivity (neuroticism facet) and lower positive emotionality and sociability (extraversion facets). First onsets of generalized anxiety disorder (GAD) were predicted by neuroticism, and particularly the facet of anxiousness. First onsets of social phobia were predicted at the facet level by anxiousness. First onsets of specific phobia were predicted by neuroticism, low conscientiousness, and all neuroticism facets. In multivariate analyses, first onsets of depression were uniquely predicted by depressivity, and onsets of GAD and social phobia were uniquely predicted by anxiousness over and above the general trait of neuroticism. CONCLUSIONS General traits predict first onsets of depressive and anxiety disorders. In addition, more specific associations are evident at the facet level. Facets can refine our understanding of the links between personality and psychopathology risk, and provide finer-grained targets for personality-informed interventions.
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Affiliation(s)
| | - Roman Kotov
- Department of Psychiatry,Stony Brook University,Stony Brook, NY,USA
| | - Greg Perlman
- Department of Psychiatry,Stony Brook University,Stony Brook, NY,USA
| | - David Watson
- Department of Psychology,University of Notre Dame,Notre Dame, IN,USA
| | - Daniel N Klein
- Department of Psychology,Stony Brook University,Stony Brook,NY,USA
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26
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Bugnet M, Overbury SH, Wu ZL, Epicier T. Direct Visualization and Control of Atomic Mobility at {100} Surfaces of Ceria in the Environmental Transmission Electron Microscope. Nano Lett 2017; 17:7652-7658. [PMID: 29166035 DOI: 10.1021/acs.nanolett.7b03680] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Ceria is one of the world's most prominent material for applications in heterogeneous catalysis, as catalyst support or catalyst itself. Despite an exhaustive literature on the structure of reactive facets of CeO2 in line with its catalytic mechanisms, the temporal evolution of the atomic surface structure exposed to realistic redox conditions remains elusive. Here, we provide a direct visualization of the atomic mobility of cerium atoms on {100} surfaces of CeO2 nanocubes at room temperature in high vacuum, O2, and CO2 atmospheres in an environmental transmission electron microscope. Through quantification of the cationic mobility, we demonstrate the control of the surface dynamics under exposure to O2 and CO2 atmospheres, providing opportunities for a better understanding of the intimate catalytic mechanisms.
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Affiliation(s)
- M Bugnet
- University of Lyon, INSA Lyon, UCBL Lyon 1, MATEIS, UMR 5510 CNRS , 69100 Villeurbanne Cedex, France
| | - S H Overbury
- Chemical Science Division, Center for Nanophase Materials Science, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
| | - Z L Wu
- Chemical Science Division, Center for Nanophase Materials Science, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
| | - T Epicier
- University of Lyon, INSA Lyon, UCBL Lyon 1, MATEIS, UMR 5510 CNRS , 69100 Villeurbanne Cedex, France
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Abstract
Objective Intra-articular injections of the C1–2 joint are an effective therapeutic option for pain generated from degenerative and inflammatory conditions affecting the joint. Limited information exists about the adverse events (AEs) associated with these injections. The primary aim of this study is to describe the frequency and type of AEs associated with C1–2 joint injections. The secondary aim is to identify clinical factors associated with the occurrence of AEs of C1–2 joint injections. Design/methods A retrospective chart review was conducted on all C1–2 joint injections performed at the Mayo Pain Medicine Clinic in Rochester, MN, from January 1, 2005 through July 31, 2015. AE data were extracted from procedural and post-procedural clinical notes. Analysis was conducted to determine correlations between any AE and demographic and clinical characteristics. Using univariate and multivariate logistic regression analyses, associations were determined. Results From January 1, 2005 to July 31, 2015, 135 C1–2 injections were performed on 72 patients. Overall, at least 1 AE was reported in 18.5% of the injections. The most common AEs were post-procedural increase in pain and procedural vascular contrast uptake. There was a significant association between AE occurrence and greater pre-procedural maximum pain score. Conclusions AEs from C1–2 joint injections occurred commonly, but there were no persistent or serious AEs associated with these injections. The data also demonstrate that patients with higher pre-procedural maximum pain scores are more likely to experience an AE.
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Affiliation(s)
| | - W Michael Hooten
- Division of Pain Medicine, Department of Anesthesia and Perioperative Medicine, Mayo Clinic
| | - Rebecca A Sanders
- Division of Pain Medicine, Department of Anesthesia and Perioperative Medicine, Mayo Clinic
| | - James C Watson
- Division of Pain Medicine, Department of Anesthesia and Perioperative Medicine, Mayo Clinic
| | - Susan M Moeschler
- Division of Pain Medicine, Department of Anesthesia and Perioperative Medicine, Mayo Clinic
| | - Halena M Gazelka
- Division of Pain Medicine, Department of Anesthesia and Perioperative Medicine, Mayo Clinic
| | - Bryan C Hoelzer
- Division of Pain Medicine, Department of Anesthesia and Perioperative Medicine, Mayo Clinic
| | - Jason S Eldrige
- Division of Pain Medicine, Department of Anesthesia and Perioperative Medicine, Mayo Clinic
| | - Wenchun Qu
- Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN, USA
| | - Tim J Lamer
- Division of Pain Medicine, Department of Anesthesia and Perioperative Medicine, Mayo Clinic
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Shkoler O, Rabenu E, Vasiliu C, Sharoni G, Tziner A. Organizing the Confusion Surrounding Workaholism: New Structure, Measure, and Validation. Front Psychol 2017; 8:1803. [PMID: 29097989 PMCID: PMC5654401 DOI: 10.3389/fpsyg.2017.01803] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 09/29/2017] [Indexed: 11/13/2022] Open
Abstract
Since "workaholism" was coined, a considerable body of research was conducted to shed light on its essence. After at least 40 years of studying this important phenomenon, a large variety of definitions, conceptualizations, and measures emerged. In order to try and bring more integration and consensus to this construct, the current research was conducted in two phases. We aimed to formulate a theoretical definitional framework for workaholism, capitalizing upon the Facet Theory Approach. Two basic facets were hypothesized: A. Modalities of workaholism, with three elements: cognitive, emotional, and instrumental; and B. Resources of workaholism with two elements: time and effort. Based on this definitional framework, a structured questionnaire was conceived. In the first phase, the new measure was validated with an Israeli sample comparing two statistical procedures; Factor Analysis (FA) and Smallest Space Analysis (SSA). In the second phase, we aimed to replicate the findings, and to contrast the newly-devised questionnaire with other extant workaholism measures, with a Romanian sample. Theoretical implications and future research suggestions are discussed.
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Affiliation(s)
- Or Shkoler
- School of Behavioral Sciences, Netanya Academic College, Netanya, Israel
| | - Edna Rabenu
- School of Behavioral Sciences, Netanya Academic College, Netanya, Israel
| | - Cristinel Vasiliu
- Department of Business Consumer Science and Quality Management, The Bucharest University of Economic Studies, Bucharest, Romania
| | - Gil Sharoni
- School of Behavioral Sciences, Netanya Academic College, Netanya, Israel
| | - Aharon Tziner
- School of Behavioral Sciences, Netanya Academic College, Netanya, Israel
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29
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Bai L, Ye F, Li L, Lu J, Zhong S, Bai S. Facet Engineered Interface Design of Plasmonic Metal and Cocatalyst on BiOCl Nanoplates for Enhanced Visible Photocatalytic Oxygen Evolution. Small 2017; 13:1701607. [PMID: 28796441 DOI: 10.1002/smll.201701607] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 06/28/2017] [Indexed: 06/07/2023]
Abstract
Integration of plasmonic metal and cocatalyst with semiconductor is a promising approach to simultaneously optimize the generation, transfer, and consumption of photoinduced charge carriers for high-performance photocatalysis. The photocatalytic activities of the designed hybrid structures are greatly determined by the efficiencies of charge transfer across the interfaces between different components. In this paper, interface design of Ag-BiOCl-PdOx hybrid photocatalysts is demonstrated based on the choice of suitable BiOCl facets in depositing plasmonic Ag and PdOx cocatalyst, respectively. It is found that the selective deposition of Ag and PdOx on BiOCl(110) planes realizes the superior photocatalytic activity in O2 evolution compared with the samples with other Ag and PdOx deposition locations. The reason was the superior hole transfer abilities of Ag-(110)BiOCl and BiOCl(110)-PdOx interfaces in comparison with those of Ag-(001)BiOCl and BiOCl(001)-PdOx interfaces. Two effects are proposed to contribute to this enhancement: (1) stronger electronic coupling at the BiOCl(110)-based interfaces resulted from the thinner contact barrier layer and (2) the shortest average hole diffuse distance realized by Ag and PdOx on BiOCl(110) planes. This work represents a step toward the interface design of high-performance photocatalyst through facet engineering.
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Affiliation(s)
- Lijie Bai
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, Zhejiang, 321004, P. R. China
| | - Fan Ye
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, Zhejiang, 321004, P. R. China
| | - Luna Li
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, Zhejiang, 321004, P. R. China
| | - Jingjing Lu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, Zhejiang, 321004, P. R. China
| | - Shuxian Zhong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, Zhejiang, 321004, P. R. China
| | - Song Bai
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, Zhejiang, 321004, P. R. China
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
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Ita ME, Crosby ND, Bulka BA, Winkelstein BA. Painful Cervical Facet Joint Injury Is Accompanied by Changes in the Number of Excitatory and Inhibitory Synapses in the Superficial Dorsal Horn That Differentially Relate to Local Tissue Injury Severity. Spine (Phila Pa 1976) 2017; 42:E695-701. [PMID: 27755498 DOI: 10.1097/BRS.0000000000001934] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN Immunohistochemistry labeled pre- and postsynaptic structural markers to quantify excitatory and inhibitory synapses in the spinal superficial dorsal horn at 14 days after painful facet joint injury in the rat. OBJECTIVE The objective of this study was to investigate the relationship between pain and synapse density in the spinal cord after facet injury. SUMMARY OF BACKGROUND DATA Neck pain is a major contributor to disability and often becomes chronic. The cervical facet joints are susceptible to loading-induced painful injury, initiating spinal central sensitization responses. Although excitatory synapse plasticity has been reported in the superficial dorsal horn early after painful facet injury, whether excitatory and/or inhibitory synapse density is altered at a time when pain is maintained is unknown. METHODS Rats underwent either a painful C6/C7 facet joint distraction or sham surgery. Mechanical hyperalgesia was measured and immunohistochemistry techniques for synapse quantification were used to quantify excitatory and inhibitory synapse densities in the superficial dorsal horn at day 14. Logarithmic correlation analyses evaluated whether the severity of facet injury correlated with either behavioral or synaptic outcomes. RESULTS Facet joint injury induces pain that is sustained until day 14 (P <0.001) and both significantly greater excitatory synapse density (P = 0.042) and lower inhibitory synapse density (P = 0.0029) in the superficial dorsal horn at day 14. Injury severity is significantly correlated with pain at days 1 (P = 0.0011) and 14 (P = 0.0002), but only with inhibitory, not excitatory, synapse density (P = 0.0025) at day 14. CONCLUSION This study demonstrates a role for structural plasticity in both excitatory and inhibitory synapses in the maintenance of facet-mediated joint pain, and that altered inhibitory, but not excitatory, synapse density correlates to the severity of painful joint injury. Understanding the functional consequences of this spinal structural plasticity is critical to elucidate mechanisms of chronic joint pain. LEVEL OF EVIDENCE N /A.
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31
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Anissipour AK, Agel J, Baron M, Magnusson E, Bellabarba C, Bransford RJ. Traumatic Cervical Unilateral and Bilateral Facet Dislocations Treated With Anterior Cervical Discectomy and Fusion Has a Low Failure Rate. Global Spine J 2017; 7:110-115. [PMID: 28507879 PMCID: PMC5415151 DOI: 10.1177/2192568217694002] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [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] [Indexed: 12/11/2022] Open
Abstract
STUDY DESIGN Retrospective radiographic and chart review. OBJECTIVE To define the rate and associated risk factors of treatment failure of anterior cervical fusion for treatment of cervical facet dislocations. METHODS Between 2004 and 2014, a retrospective review at a single level 1 trauma center identified 38 patients with unilateral or bilateral dislocated facet(s) treated with anterior cervical discectomy and fusion (ACDF). Two patients were eliminated due to less than 30-day follow-up. Demographic data, initial neurological exams, surgical data, radiographic findings, and follow-up records were reviewed. RESULTS Of the 36 patients with facet dislocations treated with ACDF using a fixed locking plate, 16 were unilateral and 20 were bilateral. The mean age was 35 years (range 13-58). Mean follow-up was 323 days (range 30-1998). There were 3 treatment failures (8%). Three of 7 (43%) endplate fractures failed (P < .01), and 1/28 (4%) facet fractures failed (P = .13). The mean time to failure was 4 weeks (1-7 weeks). One treatment failure had a facet fracture, and all 3 failures had an associated endplate fracture. CONCLUSION Treatment failure occurred in 3 out of 36 (8%) patients with facet fracture dislocations treated with anterior cervical discectomy, fusion, and plating. Rates of failure are lower than has been previously reported. Endplate fractures of the inferior level in jumped facets appears to be a major risk factor of biomechanical failure. However, a facet fracture may not be a risk factor for failure. In the absence of an endplate fracture, ACDF is a reasonable treatment option in patients with single-level cervical facet dislocation.
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Affiliation(s)
| | - Julie Agel
- Harborview Medical Center, Seattle, WA, USA
| | | | | | | | - Richard J. Bransford
- Harborview Medical Center, Seattle, WA, USA,Richard J. Bransford, Department of Orthopaedic and Neurological Surgery, Harborview Medical Center, 325 Ninth Avenue, Box 359798, Seattle, WA 98199, USA.
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32
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Perl CD, Rossoni S, Niven JE. Conservative whole-organ scaling contrasts with highly labile suborgan scaling differences among compound eyes of closely related Formica ants. Ecol Evol 2017; 7:1663-1673. [PMID: 28331577 PMCID: PMC5355196 DOI: 10.1002/ece3.2695] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 11/21/2016] [Accepted: 11/24/2016] [Indexed: 11/16/2022] Open
Abstract
Static allometries determine how organ size scales in relation to body mass. The extent to which these allometric relationships are free to evolve, and how they differ among closely related species, has been debated extensively and remains unclear; changes in intercept appear common, but changes in slope are far rarer. Here, we compare the scaling relationships that govern the structure of compound eyes of four closely related ant species from the genus Formica. Comparison among these species revealed changes in intercept but not slope in the allometric scaling relationships governing eye area, facet number, and mean facet diameter. Moreover, the scaling between facet diameter and number was conserved across all four species. In contrast, facet diameters from distinct regions of the compound eye differed in both intercept and slope within a single species and when comparing homologous regions among species. Thus, even when species are conservative in the scaling of whole organs, they can differ substantially in regional scaling within organs. This, at least partly, explains how species can produce organs that adhere to genus wide scaling relationships while still being able to invest differentially in particular regions of organs to produce specific features that match their ecology.
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Affiliation(s)
- Craig D Perl
- School of Life Sciences Centre for Computational Neuroscience and Robotics University of Sussex Falmer Brighton UK
| | - Sergio Rossoni
- School of Life Sciences Centre for Computational Neuroscience and Robotics University of Sussex Falmer Brighton UK; Present address: Department of Physiology, Development and Neuroscience University of Cambridge Downing Site, Downing Street Cambridge CB2 3EG UK
| | - Jeremy E Niven
- School of Life Sciences Centre for Computational Neuroscience and Robotics University of Sussex Falmer Brighton UK
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Sawicki LM, Schaarschmidt BM, Heusch P, Buchbender C, Rosenbaum-Krumme S, Umutlu L, Eicker SO, Bockisch A, Antoch G, Floeth FW. Value of 18 F-FDG PET/MRI for the outcome of CT-guided facet block therapy in cervical facet syndrome: initial results. J Med Imaging Radiat Oncol 2016; 61:327-333. [PMID: 27885810 DOI: 10.1111/1754-9485.12565] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 10/28/2016] [Indexed: 11/30/2022]
Abstract
INTRODUCTION The aim of this study was to evaluate the ability of 18 F-fluorodeoxyglucose positron emission tomography/magnetic resonance imaging (18 F-FDG PET/MRI) to detect PET-positive cervical facet arthropathy and identify patients who benefit from facet block therapy. METHODS Ten patients with cervical facet syndrome (mean age: 65 ± 12 years) underwent 18 F-FDG PET/MRI of the neck. Focal 18 F-FDG uptake in PET-positive facet joints served as target for computed tomography (CT)-guided facet blocks. In PET-negative patients, the target joint for facet block therapy was selected by current clinical standards considering the level of maximum facet arthrosis and pain. Neck pain was measured on visual analogue scale (VAS) before and after therapy. Bone marrow signal intensity (SI) ratio on turbo inversion recovery magnitude (TIRM) images and maximum standard uptake values (SUVmax) was calculated for each facet joint. Pearson's correlation coefficient (r) was calculated between bone marrow SI ratios on TIRM and SUVmax. RESULTS 18 F-FDG PET/MRI detected PET-positive facet arthropathy in six patients. Patients with PET-positive facet arthropathy had significantly less pain compared with the pretreatment pain 3 h (P = 0.002), 4 weeks (P = 0.002) and 3 months (P = 0.026) after facet block therapy. Pain did not change significantly in patients with PET-negative facet arthropathy. TIRM SI ratio was higher in PET-positive facet arthropathy than in PET-negative facet arthropathy (P < 0.001). Correlation was strong between bone marrow SI ratio on TIRM images and SUVmax (r = 0.7; P < 0.001). CONCLUSIONS 18 F-FDG PET/MRI can detect PET-positive cervical facet arthropathy and help to identify patients benefitting from facet block therapy. Bone marrow TIRM SI ratio might be a surrogate for PET-positive facet arthropathy.
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Affiliation(s)
- Lino M Sawicki
- Department of Diagnostic and Interventional Radiology, Medical Faculty, University Dusseldorf, Dusseldorf, Germany.,Department of Diagnostic and Interventional Radiology and Neuroradiology, Medical Faculty, University Duisburg-Essen, Essen, Germany
| | - Benedikt M Schaarschmidt
- Department of Diagnostic and Interventional Radiology, Medical Faculty, University Dusseldorf, Dusseldorf, Germany
| | - Philipp Heusch
- Department of Diagnostic and Interventional Radiology, Medical Faculty, University Dusseldorf, Dusseldorf, Germany
| | - Christian Buchbender
- Department of Diagnostic and Interventional Radiology, Medical Faculty, University Dusseldorf, Dusseldorf, Germany
| | | | - Lale Umutlu
- Department of Diagnostic and Interventional Radiology and Neuroradiology, Medical Faculty, University Duisburg-Essen, Essen, Germany
| | - Sven O Eicker
- Department of Neurosurgery, Medical Faculty, University Hamburg, Hamburg, Germany
| | - Andreas Bockisch
- Department of Nuclear Medicine, Medical Faculty, University Duisburg-Essen, Essen, Germany
| | - Gerald Antoch
- Department of Diagnostic and Interventional Radiology, Medical Faculty, University Dusseldorf, Dusseldorf, Germany
| | - Frank W Floeth
- Department of Neurosurgery, Medical Faculty, University Dusseldorf, Dusseldorf, Germany
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Bai Y, Ye L, Chen T, Wang L, Shi X, Zhang X, Chen D. Facet-Dependent Photocatalytic N 2 Fixation of Bismuth-Rich Bi 5O 7I Nanosheets. ACS Appl Mater Interfaces 2016; 8:27661-27668. [PMID: 27668449 DOI: 10.1021/acsami.6b08129] [Citation(s) in RCA: 140] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Bismuth-rich bismuth oxyhalides (Bi-O-X; X = Cl, Br, I) display high photocatalytic reduction activity due to the promoting conduction band potential. In this work, two Bi5O7I nanosheets with different dominant facets were synthesized using either molecular precursor hydrolysis or calcination. Crystal structure characterizations, included X-ray diffraction patterns (XRD), field emission electron microscopy and fast Fourier transformation (FFT) images, showed that hydrolysis and calcination resulted in the dominant exposure of {100} and {001} facets, respectively. Photocatalytic data revealed that Bi5O7I-001 had a higher activity than Bi5O7I-100 for N2 fixation and dye degradation. Photoelectrochemical data revealed that Bi5O7I-001 had higher photoinduced carrier separation efficiency than Bi5O7I-100. The band structure analysis also used to explain the underlying photocatalytic mechanism based on the different conduction band position. This work presents the first report about the facet-dependent photocatalytic performance of bismuth-rich Bi-O-X photocatalysts.
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Affiliation(s)
- Yang Bai
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, and School of Oil & Natural Gas Engineering, Southwest Petroleum University , Chengdu 610500, China
| | - Liqun Ye
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, and School of Oil & Natural Gas Engineering, Southwest Petroleum University , Chengdu 610500, China
- Key Laboratory of Ecological Security for Water Source Region of Mid-line Project of South-to-North Water Diversion of Henan Province; Henan Collaborative Innovation Center of Water Security for Water Source Region of Mid-line of South-to-North Diversion Project, Nanyang Normal University , Nanyang 473061, China
| | - Ting Chen
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, and School of Oil & Natural Gas Engineering, Southwest Petroleum University , Chengdu 610500, China
| | - Li Wang
- Key Laboratory of Ecological Security for Water Source Region of Mid-line Project of South-to-North Water Diversion of Henan Province; Henan Collaborative Innovation Center of Water Security for Water Source Region of Mid-line of South-to-North Diversion Project, Nanyang Normal University , Nanyang 473061, China
| | - Xian Shi
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, and School of Oil & Natural Gas Engineering, Southwest Petroleum University , Chengdu 610500, China
| | - Xu Zhang
- College of Oil Engineering, Chongqing University of Science and Technology , Chongqing 401331, China
| | - Dan Chen
- Institute of Tarim Oilfield Company , Kuerle 841000, China
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35
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Samartzis D, Cheung JPY, Rajasekaran S, Kawaguchi Y, Acharya S, Kawakami M, Satoh S, Chen WJ, Park CK, Lee CS, Foocharoen T, Nagashima H, Kuh S, Zheng Z, Condor R, Ito M, Iwasaki M, Jeong JH, Luk KDK, Prijambodo B, Rege A, Jahng TA, Luo Z, Tassanawipas W, Acharya N, Pokharel R, Shen Y, Ito T, Zhang Z, Aithala P J, Kumar GV, Jabir RA, Basu S, Li B, Moudgil V, Goss B, Sham P, Williams R. Critical Values of Facet Joint Angulation and Tropism in the Development of Lumbar Degenerative Spondylolisthesis: An International, Large-Scale Multicenter Study by the AOSpine Asia Pacific Research Collaboration Consortium. Global Spine J 2016; 6:414-21. [PMID: 27433424 PMCID: PMC4947402 DOI: 10.1055/s-0035-1564417] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [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: 06/30/2015] [Accepted: 08/03/2015] [Indexed: 11/20/2022] Open
Abstract
STUDY DESIGN An international, multicenter cross-sectional image-based study performed in 33 institutions in the Asia Pacific region. OBJECTIVE The study addressed the role of facet joint angulation and tropism in relation to L4-L5 degenerative spondylolisthesis (DS). METHODS The study included 349 patients (63% females; mean age: 61.8 years) with single-level DS; 82 had no L4-L5 DS (group A) and 267 had L4-L5 DS (group B). Axial computed tomography and magnetic resonance imaging were utilized to assess facet joint angulations and tropism (i.e., asymmetry between facet joint angulations) between groups. RESULTS There was a statistically significant difference between group A (left mean: 46.1 degrees; right mean: 48.2 degrees) and group B (left mean: 55.4 degrees; right mean: 57.5 degrees) in relation to bilateral L4-L5 facet joint angulations (p < 0.001). The mean bilateral angulation difference was 7.4 and 9.6 degrees in groups A and B, respectively (p = 0.025). A critical value of 58 degrees or greater significantly increased the likelihood of DS if unilateral (adjusted OR: 2.5; 95% CI: 1.2 to 5.5; p = 0.021) or bilateral facets (adjusted OR: 5.9; 95% CI: 2.7 to 13.2; p < 0.001) were involved. Facet joint tropism was found to be relevant between 16 and 24 degrees angulation difference (adjusted OR: 5.6; 95% CI: 1.2 to 26.1; p = 0.027). CONCLUSIONS In one of the largest studies assessing facet joint orientation in patients with DS, greater sagittal facet joint angulation was associated with L4-L5 DS, with a critical value of 58 degrees or greater increasing the likelihood of the condition for unilateral and bilateral facet joint involvement. Specific facet joint tropism categories were noted to be associated with DS.
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Affiliation(s)
- Dino Samartzis
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, SAR, China,Dino Samartzis, DSc Department of Orthopaedics and Traumatology, The University of Hong Kong102 Pokfulam Road, Professorial Block, 5th Floor, Pokfulam, Hong Kong, SARChina
| | - Jason Pui Yin Cheung
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, SAR, China
| | | | | | - Shankar Acharya
- Department of Orthopedics, Sir Gangaram Hospital, New Delhi, India
| | - Mamoru Kawakami
- Spine Center, Wakayama Medical University, Kihoku Hospital, Ito-gun, Japan
| | | | - Wen-Jer Chen
- Orthopaedic Department, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Chun-Kun Park
- Department of Neurosurgery, Seoul St. Mary's Hospital, Catholic University of Korea, Seoul, South Korea
| | - Chong-Suh Lee
- Department of Orthopedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Thanit Foocharoen
- Department of Orthopaedic Surgery, Khonkaen Regional Hospital, Khonkean, Thailand
| | - Hideki Nagashima
- Department of Orthopedic Surgery, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Sunguk Kuh
- Department of Neurosurgery, Gangnam Severance Hospital, Seoul, South Korea
| | - Zhaomin Zheng
- Department of Spine Surgery, The First Hospital Affiliated of Zhongshan University, Guangzhou, China
| | - Richard Condor
- Department of Orthopedics, Cebu Orthopaedic Institute, Cebu, Philippines
| | - Manabu Ito
- Department of Advanced Medicine for Spine and Spinal Cord Disorders, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Motoki Iwasaki
- Department of Orthopaedic Surgery, Osaka Rosai Hospital, Osaka, Japan
| | - Je Hoon Jeong
- Department of Neurosurgery, College of Medicine, Soon Chun Hyang Unviersity Bucheon Hospital, Bucheon, South Korea
| | - Keith D. K. Luk
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, SAR, China
| | - Bambang Prijambodo
- Department of Orthopaedic and Traumatology, Faculty of Medicine Airlargga University, Dr. Soetomo Teaching Hospital, Surabaya, Indonesia
| | - Amol Rege
- Department of Orthopaedics, Deenanath Mangeshkar Hospital, Jehangir Hospital, Pune, India
| | - Tae-Ahn Jahng
- Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Zhuojing Luo
- Department of Orthopaedic Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Warat Tassanawipas
- Department of Orthopedics, Phramongkuthklao Army Hospital, Bangkok, Thailand
| | | | - Rohit Pokharel
- Department of Orthopedics and Trauma Surgery, Spine Unit, Tribhuvan University, Teaching Hospital, Kathmandu, Nepal
| | - Yong Shen
- Department of Spine Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Takui Ito
- Department of Orthopaedic Surgery, Niigata City General Hospital, Niigata, Japan
| | - Zhihai Zhang
- Department of Orthopaedic Surgery, Beijing 361 Hospital (Aviation General Hospital), Beijing, China
| | - Janardhana Aithala P
- Department of Orthopedics, Kasturba Medical College, Manipal University, Mangalore, India
| | | | - Rahyussalim Ahmad Jabir
- Orthopaedic and Traumatology Department, University of Indonesia/RS Ciptomangunkusumo, Jakarta, Indonesia
| | | | - Baojun Li
- Department of Spine Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Vishal Moudgil
- Department of Orthopedic, Punjab Institute of Medical Sciences Jalandhar, Jalandhar, India
| | - Ben Goss
- Department of Orthopaedics, Princess Alexandra Hospital, Brisbane, Australia
| | - Phoebe Sham
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, SAR, China
| | - Richard Williams
- Department of Orthopaedics, Princess Alexandra Hospital, Brisbane, Australia,Address for correspondence Richard Williams, MBBS, FACS School of Medicine, University of Queensland, Brisbane Spine Reference CenterPrincess Alexandra Hospital, 8/259 Wickham Tce, Brisbane 4000Australia
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Amrhein TJ, Joshi AB, Kranz PG. Technique for CT Fluoroscopy-Guided Lumbar Medial Branch Blocks and Radiofrequency Ablation. AJR Am J Roentgenol 2016; 207:631-4. [PMID: 27276532 DOI: 10.2214/AJR.15.15694] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
OBJECTIVE The purpose of this study is to describe the procedure for CT fluoroscopy-guided lumbar medial branch blocks and facet radiofrequency ablation. CONCLUSION CT fluoroscopic guidance allows more-precise needle tip positioning and is an alternative method for performing medial branch blocks and facet radiofrequency ablation.
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Abstract
BACKGROUND This study looked at the relationship between "bright-side" and "dark-side" personality variables by focusing on the controversial trait of Passive-Aggressiveness. Around 4800 British adults completed the NEO-PI-R which measures the Big Five Personality factors at the Domain and the Facet level, as well as the Hogan Development Survey (HDS) which has a measure of Passive-Aggressiveness called Leisurely. AIM To determine to what extent the well-established Big Five traits measured at both domain and facet level can account for the variance in a measure of passive-aggressiveness. FINDINGS Correlations and regressions indicated that Leisurely individuals are introverted, closed-minded Neurotics, with particular needs for order and deliberation. Neuroticism facets accounted for most of the variance. Overall, the Big Five measured at Domain and Facet level accounted for relatively small amounts of variance, suggesting the divergent validity of this measure of PAPD. CONCLUSIONS This scale measures something that is not captured by comprehensive taxonomies of personality. Limitations and implications for clinical practice are noted.
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Affiliation(s)
- Adrian Furnham
- a Research Department of Clinical , Educational and Health Psychology, University College London , London , UK , and.,b Norwegian Business School (BI) , Nydalveien , Olso , Norway
| | - John Crump
- a Research Department of Clinical , Educational and Health Psychology, University College London , London , UK , and
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Williams R, Cheung JPY, Goss B, Rajasekaran S, Kawaguchi Y, Acharya S, Kawakami M, Satoh S, Chen WJ, Park CK, Lee CS, Foocharoen T, Nagashima H, Kuh S, Zheng Z, Condor R, Ito M, Iwasaki M, Jeong JH, Luk KDK, Prijambodo B, Rege A, Jahng TA, Luo Z, Tassanawipas W, Acharya N, Pokharel R, Shen Y, Ito T, Zhang Z, Aithala P J, Kumar GV, Jabir RA, Basu S, Li B, Moudgil V, Sham P, Samartzis D. An International Multicenter Study Assessing the Role of Ethnicity on Variation of Lumbar Facet Joint Orientation and the Occurrence of Degenerative Spondylolisthesis in Asia Pacific: A Study from the AOSpine Asia Pacific Research Collaboration Consortium. Global Spine J 2016; 6:35-45. [PMID: 26835200 PMCID: PMC4733370 DOI: 10.1055/s-0035-1555655] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [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: 02/27/2015] [Accepted: 04/20/2015] [Indexed: 01/21/2023] Open
Abstract
Study Design A multinational, multiethnic, cross-sectional image-based study was performed in 33 institutions, representing 10 countries, which were part of the AOSpine Asia Pacific Research Collaboration Consortium. Objective Lumbar facet joint orientation has been reported to be associated with the development of degenerative spondylolisthesis (DS). The role of ethnicity regarding facet joint orientation remains uncertain. As such, the following study was performed across a wide-ranging population base to assess the role of ethnicity in facet joint orientation in patients with DS in the Asia Pacific region. Methods Lateral standing X-rays and axial magnetic resonance imaging scans were obtained for patients with lumbar DS. The DS parameters and facet joint angulations were assessed from L3-S1. Sex, age, body mass index (BMI), and ethnicity were also noted. Results The study included 371 patients with known ethnic origin (mean age: 62.0 years; 64% males, 36% females). The mean BMI was 25.6 kg/m(2). The level of DS was most prevalent at L4-L5 (74.7%). There were 28.8% Indian, 28.6% Japanese, 18.1% Chinese, 8.6% Korean, 6.5% Thai, 4.9% Caucasian, 2.7% Filipino, and 1.9% Malay patients. Variations in facet joint angulations were noted from L3 to S1 and between patients with and without DS (p < 0.05). No differences were noted with regards to sex and overall BMI to facet joint angulations (p > 0.05); however, increasing age was found to increase the degree of angulation throughout the lumbar spine (p < 0.05). Accounting for age and the presence or absence of DS at each level, no statistically significant differences between ethnicity and degree of facet joint angulations from L3-L5 were noted (p > 0.05). Ethnic variations were noted in non-DS L5-S1 facet joint angulations, predominantly between Caucasian, Chinese, and Indian ethnicities (p < 0.05). Conclusions This study is the first to suggest that ethnicity may not play a role in facet joint orientation in the majority of cases of DS in the Asia-Pacific region. Findings from this study may facilitate future comparative studies in other multiethnic populations. An understanding of ethnic variability may assist in identifying those patients at risk of postsurgical development or progression of DS. This study also serves as a model for large-scale multicenter studies across different ethnic groups and cultural boundaries in Asia.
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Affiliation(s)
- Richard Williams
- Department of Orthopaedics, Princess Alexandra Hospital, Brisbane, Australia,Address for correspondence Richard Williams, MBBS, FACS School of Medicine, University of QueenslandBrisbane Spine Reference Center, Alexandra Hospital8/259 Wickham Tce, Brisbane 4000Australia
| | - Jason Pui Yin Cheung
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, SAR, China
| | - Ben Goss
- Department of Orthopaedics, Princess Alexandra Hospital, Brisbane, Australia
| | | | | | - Shankar Acharya
- Department of Orthopedics, Sir Gangaram Hospital, New Delhi, India
| | - Mamoru Kawakami
- Spine Care Center, Wakayama Medical University, Kihoku Hospital, Ito-gun, Japan
| | - Shigenobu Satoh
- Department of Spine Surgery, Eniwa Hospital, Hokkaido, Japan
| | - Wen-Jer Chen
- Department of Orthopaedic, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Chun-Kun Park
- Department of Neurosurgery, Catholic University of Korea, Seoul, South Korea
| | - Chong-Suh Lee
- Department of Orthopedic Surgery, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Thanit Foocharoen
- Department of Orthopaedic Surgery, Khonkaen Regional Hospital, Khonkean, Thailand
| | - Hideki Nagashima
- Department of Orthopedic Surgery, Tottori University, Yonago, Japan
| | - Sunguk Kuh
- Department of Neurosurgery, Gangnam Severance Hospital, Seoul, South Korea
| | - Zhaomin Zheng
- Department of Spine Surgery, The First Hospital Affiliated of Zhongshan University, Guangzhou, China
| | - Richard Condor
- Department of Orthopedics, Cebu Orthopaedic Institute, Cebu, Philippines
| | - Manabu Ito
- Department of Advanced Medicine for Spine and Spinal Cord Disorders, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Motoki Iwasaki
- Department of Orthopaedic Surgery, Osaka Rosai Hospital, Osaka, Japan
| | - Je Hoon Jeong
- Department of Neurosurgery, College of Medicine, Soon Chun Hyang Unviersity Bucheon Hospital, Bucheon, South Korea
| | - Keith D. K. Luk
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, SAR, China
| | - Bambang Prijambodo
- Department of Orthopaedics and Traumatology, Faculty of Medicine Airlargga University, Surabaya, Indonesia
| | - Amol Rege
- Department of Orthopaedics, Deenanath Mangeshkar Hospital, Jehangir Hospital, Pune, India
| | - Tae-Ahn Jahng
- Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Zhuojing Luo
- Department of Orthopaedic Surgery, The Fourth Military Medical University, Xi'an, China
| | - Warat Tassanawipas
- Department of Orthopedics, Phramongkuthklao Army Hospital, Bangkok, Thailand
| | | | - Rohit Pokharel
- Department of Orthopedics and Trauma Surgery, Tribhuvan University, Kathmandu, Nepal
| | - Yong Shen
- Department of Spine Surgery, The Third Hospital of Hebei Medical University of China, Shijiazhuang, China
| | - Takui Ito
- Department of Orthopaedic Surgery, Niigata City General Hospital, Niigata, Japan
| | - Zhihai Zhang
- Department of Orthopaedic Surgery, Aviation General Hospital, Beijing, China
| | | | | | - Rahyussalim Ahmad Jabir
- Department of Orthopaedic and Traumatology, University of Indonesia / RS Ciptomangunkusumo, Jakarta, Indonesia
| | | | - Baojun Li
- Department of Spine Surgery, The Third Hospital of Hebei Medical University of China, Shijiazhuang, China
| | - Vishal Moudgil
- Department of Orthopedic, Punjab Institute of Medical Sciences Jalandhar, Jalandhar, India
| | - Phoebe Sham
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, SAR, China
| | - Dino Samartzis
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, SAR, China,Dino Samartzis, DSc Department of Orthopaedics and TraumatologyThe University of Hong Kong102 Pokfulam RoadProfessorial Block, 5th FloorPokfulam, Hong Kong, SARChina
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Abstract
Knowledge of nanoscale heteroepitaxy is continually evolving as advances in material synthesis reveal new mechanisms that have not been theoretically predicted and are different than what is known about planar structures. In addition to a wide range of potential applications, core/shell nanowire structures offer a useful template to investigate heteroepitaxy at the atomistic scale. We show that the growth of a Ge shell on a Si core can be tuned from the theoretically predicted island growth mode to a conformal, crystalline, and smooth shell by careful adjustment of growth parameters in a narrow growth window that has not been explored before. In the latter growth mode, Ge adatoms preferentially nucleate islands on the {113} facets of the Si core, which outgrow over the {220} facets. Islands on the low-energy {111} facets appear to have a nucleation delay compared to the {113} islands; however, they eventually coalesce to form a crystalline conformal shell. Synthesis of epitaxial and conformal Si/Ge/Si core/multishell structures enables us to fabricate unique cylindrical ring nanowire field-effect transistors, which we demonstrate to have steeper on/off characteristics than conventional core/shell nanowire transistors.
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Affiliation(s)
- Binh-Minh Nguyen
- Center for Integrated Nanotechnologies, Los Alamos National Laboratory , Los Alamos, New Mexico 87545, United States
- Department of Electrical and Computer Engineering, University of California San Diego , La Jolla, California 92093, United States
| | - Brian Swartzentruber
- Center for Integrated Nanotechnologies, Sandia National Laboratories , Albuquerque, New Mexico 87185, United States
| | - Yun Goo Ro
- Department of Electrical and Computer Engineering, University of California San Diego , La Jolla, California 92093, United States
| | - Shadi A Dayeh
- Center for Integrated Nanotechnologies, Los Alamos National Laboratory , Los Alamos, New Mexico 87545, United States
- Department of Electrical and Computer Engineering, University of California San Diego , La Jolla, California 92093, United States
- Materials Science Program, University of California San Diego , La Jolla, California 92093, United States
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Stuber K, Lerede C, Kristmanson K, Sajko S, Bruno P. The diagnostic accuracy of the Kemp's test: a systematic review. J Can Chiropr Assoc 2014; 58:258-267. [PMID: 25202153 PMCID: PMC4139762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND The objective of this review was to evaluate the existing literature regarding the accuracy of the Kemp's test in the diagnosis of facet joint pain compared to a reference standard. METHODS Several databases were searched. All diagnostic accuracy studies comparing the Kemp's test with an acceptable reference standard were included. Included studies were scored for quality and internal validity. RESULTS Five articles met the inclusion criteria of this review. Two studies had a low risk of bias, and three had a low concern regarding applicability. Pooling of data from studies using similar methods revealed that the test's negative predictive value was the only diagnostic accuracy measure above 50% (56.8%, 59.9%). CONCLUSIONS Currently, the literature supporting the use of the Kemp's test is limited and indicates that it has poor diagnostic accuracy. It is debatable whether clinicians should continue to use this test to diagnose facet joint pain.
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Affiliation(s)
- Kent Stuber
- Division of Graduate Education and Research, Canadian Memorial Chiropractic College
| | | | | | | | - Paul Bruno
- Assistant Professor and CCRF Research Chair in Neuromusculoskeletal Health, Faculty of Kinesiology and Health Studies, University of Regina
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Kras JV, Dong L, Winkelstein BA. Increased interleukin-1α and prostaglandin E2 expression in the spinal cord at 1 day after painful facet joint injury: evidence of early spinal inflammation. Spine (Phila Pa 1976) 2014; 39:207-12. [PMID: 24253784 DOI: 10.1097/BRS.0000000000000107] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN This study used immunohistochemistry and an enzyme immunoassay to quantify interleukin-1α (IL-1α) and prostaglandin E2 (PGE2) levels in the spinal cord of rats at 1 day after painful cervical facet joint injury. OBJECTIVE The objective of this study was to determine to what extent spinal inflammation is initiated early after a painful loading-induced injury of the C6-C7 facet joint in a rat model. SUMMARY OF BACKGROUND DATA A common source of neck pain, the cervical facet joint is susceptible to loading-induced injury, which can lead to persistent pain. IL-1α and PGE2 are associated with joint inflammation and pain, both locally in the joint and centrally in the spinal cord. Joint inflammation has been shown to contribute to pain after facet joint injury. Although spinal neuronal hyperactivity is evident within 1 day of painful facet injury, it is unknown if inflammatory mediators, such as IL-1α and PGE2, are also induced early after painful injury. METHODS Rats underwent either a painful C6-C7 facet joint distraction or sham procedure. Mechanical sensitivity was assessed, and immunohistochemical and enzyme immunoassay techniques were used to quantify IL-1α and PGE2 expression in the spinal cord at day 1. RESULTS Both IL-1α and PGE2 were significantly elevated (P≤ 0.04) at day 1 after painful injury. Moreover, although both spinal IL-1α and PGE2 levels were correlated with the withdrawal threshold in response to mechanical stimulation of the forepaw, this correlation was only significant (P = 0.01) for PGE2. CONCLUSION The increased expression of 2 inflammatory markers in the spinal cord at 1 day after painful joint injury suggests that spinal inflammation may contribute to the initiation of pain after cervical facet joint injury. Further studies will help identify functional roles of both spinal IL-1α and PGE2 in loading-induced joint pain. LEVEL OF EVIDENCE N/A.
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Oldring P, Castle L, O'Mahony C, Dixon J. Estimates of dietary exposure to bisphenol A (BPA) from light metal packaging using food consumption and packaging usage data: a refined deterministic approach and a fully probabilistic ( FACET) approach. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2014; 31:466-89. [PMID: 24405320 PMCID: PMC3998095 DOI: 10.1080/19440049.2013.860240] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Accepted: 10/23/2013] [Indexed: 11/03/2022]
Abstract
The FACET tool is a probabilistic model to estimate exposure to chemicals in foodstuffs, originating from flavours, additives and food contact materials. This paper demonstrates the use of the FACET tool to estimate exposure to BPA (bisphenol A) from light metal packaging. For exposure to migrants from food packaging, FACET uses industry-supplied data on the occurrence of substances in the packaging, their concentrations and construction of the packaging, which were combined with data from a market research organisation and food consumption data supplied by national database managers. To illustrate the principles, UK packaging data were used together with consumption data from the UK National Diet and Nutrition Survey (NDNS) dietary survey for 19-64 year olds for a refined deterministic verification. The UK data were chosen mainly because the consumption surveys are detailed, data for UK packaging at a detailed level were available and, arguably, the UK population is composed of high consumers of packaged foodstuffs. Exposures were run for each food category that could give rise to BPA from light metal packaging. Consumer loyalty to a particular type of packaging, commonly referred to as packaging loyalty, was set. The BPA extraction levels used for the 15 types of coating chemistries that could release BPA were in the range of 0.00005-0.012 mg dm(-2). The estimates of exposure to BPA using FACET for the total diet were 0.0098 (mean) and 0.0466 (97.5th percentile) mg/person/day, corresponding to 0.00013 (mean) and 0.00059 (97.5th percentile) mg kg(-1) body weight day(-1) for consumers of foods packed in light metal packaging. This is well below the current EFSA (and other recognised bodies) TDI of 0.05 mg kg(-1) body weight day(-1). These probabilistic estimates were compared with estimates using a refined deterministic approach drawing on the same input data. The results from FACET for the mean, 95th and 97.5th percentile exposures to BPA lay between the lowest and the highest estimates from the refined deterministic calculations. Since this should be the case, for a fully probabilistic compared with a deterministic approach, it is concluded that the FACET tool has been verified in this example. A recent EFSA draft opinion on exposure to BPA from different sources showed that canned foods were a major contributor and compared results from various models, including those from FACET. The results from FACET were overall conservative.
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Affiliation(s)
- P.K.T. Oldring
- Valspar Corporation (representing the FACE Industry Group (FIG)), Witney, UK
| | - L. Castle
- The Food and Environment Research Agency, York, UK
| | - C. O'Mahony
- Creme Global, The Tower, Trinity Technology and Enterprise Campus, Grand Canal Quay, Dublin 2, Ireland
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Kim D. Bipolar Intra-articular Radiofrequency Thermocoagulation of the Thoracic Facet Joints: A Case Series of a New Technique. Korean J Pain 2013; 27:43-8. [PMID: 24478900 PMCID: PMC3903800 DOI: 10.3344/kjp.2014.27.1.43] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 12/02/2013] [Accepted: 12/05/2013] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND This study tests the hypothesis that of bipolar radiofrequency thermocoagulation of the thoracic facet joint capsule may provide a safe and effect method of pain control from thoracic facet origin. METHODS Among patients suffering from localized mid back pain, nine patients with thoracic facet disease confirmed by magnetic resonance image and diagnostic thoracic facet block were enrolled. Bipolar radiofrequency ablation in the inferior aspect of the thoracic facet joint was done. Visual Analog Scale (VAS) was measured pre-intervention and 1 month post-intervention. Any complications and changes in amount of pain medication were recorded. RESULTS Significant 47.6% reduction in VAS was noted at 1 month. There were no serious complications. CONCLUSIONS Intra-articular bipolarradiofrequency thermocoagulation of the thoracic facet joint may be a technically easier and valid method of treating mid back pain of thoracic facet origin.
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Affiliation(s)
- David Kim
- Department of Anesthesiology, Division of Pain Medicine, Henry Ford Medical Center, Detroit, USA
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Kras JV, Tanaka K, Gilliland TM, Winkelstein BA. An anatomical and immunohistochemical characterization of afferents innervating the C6-C7 facet joint after painful joint loading in the rat. Spine (Phila Pa 1976) 2013; 38:E325-31. [PMID: 23324931 DOI: 10.1097/BRS.0b013e318285b5bb] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN This study used retrograde neuronal tracing and immunohistochemistry to identify neurons innervating the C6-C7 facet joint and those expressing calcitonin gene-related peptide (CGRP) in the dorsal root ganglion (DRG) of rats after painful cervical facet joint injury. OBJECTIVE The objective of this study was to characterize the innervation of the C6-C7 facet joint after painful joint injury in the rat. SUMMARY OF BACKGROUND DATA The cervical facet joint is a source of neck pain, and its loading can initiate persistent pain. CGRP is a nociceptive neurotransmitter; peptidergic afferents have been identified in the facet joint's capsule. Although studies suggest that facet joint injury alters CGRP expression in joint afferents, the distribution of neurons innervating the C6-C7 facet joint and their expression of CGRP after a painful joint injury have not been investigated. METHODS Holtzman rats (Harlan Sprague-Dawley, Indianapolis, IN) received an intra-articular injection of cholera toxin subunit B in the C6-C7 facet joints. After injection, subgroups underwent either a painful joint distraction or sham procedure. Mechanical sensitivity was assessed, and immunohistochemical techniques were used to quantify CGRP expression and cholera toxin subunit B labeling in the C5-C8 DRGs. RESULTS Facet joint distraction-induced (P ≤ 0.0002) hypersensitivity. Neurons labeled by the joint injection were identified in the C5-C8 DRGs. Significantly, more (P ≤ 0.0001) cholera toxin subunit B-positive neurons were identified in the C7 DRG than any other level. At C7, 54.4% ± 15.3% of those neurons were also CGRP-positive, whereas only 41.5% ± 5.4% of all neurons were CGRP-positive; this difference was significant (P = 0.0084). CONCLUSION The greatest number of afferents from the C6-C7 facet joint has cell bodies in the C7 DRG, implicating this level as the most relevant for pain from this joint. In addition, peptidergic afferents seem to have an important role in facet joint-mediated pain.
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Ngo T, Decina P, Hsu W. Spontaneous resolution of symptoms associated with a facet synovial cyst in an adult female - a case report. J Can Chiropr Assoc 2013; 57:87-92. [PMID: 23483069 PMCID: PMC3581007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
BACKGROUND Facet cysts are implicated in neural compression in the lumbar spine. Surgery is the definitive treatment for symptomatic facet cysts since the failure rate for conservative treatment is quite high; however, the role of physical/manual medicine practitioners in the management of symptomatic facet cysts has not been well explored. This case report will add to the body of evidence of spontaneous resolution of symptoms associated with facet cysts in the chiropractic literature. CASE A 58 year old female presented with acute low back and right leg pain which she attributed to a series of exercise classes that involved frequent foot stomping. Physical examination did not elicit any objective evidence of radiculopathy but MRI and CT scans revealed a facet cyst impinging on the right L5 nerve root. Injections and surgery were recommended; however, the patient's radicular symptoms completely resolved after three months without surgical intervention. SUMMARY There is currently a paucity of data in the literature regarding the chiropractor's role in the management of symptomatic facet cysts. The case presented here has added to this literature and possible areas for future research have been explored.
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Affiliation(s)
- Trung Ngo
- Department of Graduate Studies, Canadian Memorial Chiropractic College, Toronto, Canada
| | - Philip Decina
- Assistant Professor, Canadian Memorial Chiropractic College
| | - William Hsu
- Radiology Department and Clinical Education, Canadian Memorial Chiropractic College, Toronto, Canada
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Kras JV, Dong L, Winkelstein BA. The prostaglandin E2 receptor, EP2, is upregulated in the dorsal root ganglion after painful cervical facet joint injury in the rat. Spine (Phila Pa 1976) 2013; 38:217-22. [PMID: 22789984 DOI: 10.1097/BRS.0b013e3182685ba1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN This study implemented immunohistochemistry to assay prostaglandin E2 (PGE2) receptor EP2 expression in the dorsal root ganglion (DRG) of rats after painful cervical facet joint injury. OBJECTIVE To identify if inflammatory cascades are induced in association with cervical facet joint distraction-induced pain by investigating the time course of EP2 expression in the DRG. SUMMARY OF BACKGROUND DATA The cervical facet joint is a common source of neck pain, and nonphysiological stretch of the facet capsular ligament can initiate pain from the facet joint via mechanical injury. PGE2 levels are elevated in painful inflamed and arthritic joints, and PGE2 sensitizes joint afferents to mechanical stimulation. Although in vitro studies suggest that the EP2 receptor subtype contributes to painful joint disease, the EP2 response has not been investigated for any association with painful mechanical joint injury. METHODS Separate groups of male Holtzman rats underwent either a painful cervical facet joint distraction injury or sham procedure. Bilateral forepaw mechanical allodynia was assessed, and immunohistochemical techniques were used to quantify EP2 expression in the DRG at days 1 and 7. RESULTS Facet joint distraction induced mechanical allodynia that was significant (P < 0.024) at all time points. Painful joint injury also significantly elevated total EP2 expression in the DRG at day 1 (P = 0.009), which was maintained at day 7 (P < 0.001). Neuronal expression of EP2 in the DRG was only increased over sham levels at day 1 (P = 0.013). CONCLUSION Painful cervical facet joint distraction induces an immediate and sustained increase of EP2 expression in the DRG, implicating peripheral inflammation in the initiation and maintenance of facet joint pain. The transient increase in neuronal EP2 suggests, as in other painful joint conditions, that after joint injury nonneuronal cells may migrate to the DRG, some of which likely express EP2.
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Koh WU, Kim SH, Hwang BY, Choi WJ, Song JG, Suh JH, Leem JG, Shin JW. Value of Bone Scintigraphy and Single Photon Emission Computed Tomography (SPECT) in Lumbar Facet Disease and Prediction of Short-term Outcome of Ultrasound Guided Medial Branch Block with Bone SPECT. Korean J Pain 2011; 24:81-6. [PMID: 21716615 PMCID: PMC3111564 DOI: 10.3344/kjp.2011.24.2.81] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Revised: 04/24/2011] [Accepted: 04/29/2011] [Indexed: 12/11/2022] Open
Abstract
Background Facet joint disease plays a major role in axial low-back pain. Few diagnostic tests and imaging methods for identifying this condition exist. Single photon emission computed tomography (SPECT) is reported that it has a high sensitivity and specificity in diagnosing facet disease. We prospectively evaluated the use of bone scintigraphy with SPECT for the identification of patients with low back pain who would benefit from medial branch block. Methods SPECT was performed on 33 patients clinically suspected of facet joint disease. After SPECT, an ultrasound guided medial branch block was performed on all patients. On 28 SPECT-positive patients, medial branch block was performed based on the SPECT findings. On 5 negative patients, medial branch block was performed based on clinical findings. For one month, we evaluated the patients using the visual analogue scale (VAS) and Oswestry disability index. SigmaStat and paired t-tests were used to analyze patient data and compare results. Results Of the 33 patients, the ones who showed more than 50% reduction in VAS score were assigned 'responders'. SPECT positive patients showed a better response to medial branch blocks than negative patients, but no changes in the Oswestry disability index were seen. Conclusions SPECT is a sensitive tool for the identification of facet joint disease and predicting the response to medial branch block.
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Affiliation(s)
- Won Uk Koh
- Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Korea
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Suri P, Katz JN, Rainville J, Kalichman L, Guermazi A, Hunter DJ. Vascular disease is associated with facet joint osteoarthritis. Osteoarthritis Cartilage 2010; 18:1127-32. [PMID: 20633684 PMCID: PMC2948048 DOI: 10.1016/j.joca.2010.06.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2010] [Revised: 06/08/2010] [Accepted: 06/28/2010] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Epidemiologic studies have demonstrated associations between vascular disease and spinal degeneration. We sought to examine whether vascular disease was associated with lumbar spine facet joint osteoarthritis (FJ OA) in a community-based population. DESIGN 441 participants from the Framingham Heart Study multi-detector computed tomography (MDCT) Study were included in this ancillary study. We used a quantitative summary measure of abdominal aortic calcification (AAC) from the parent study as a marker for vascular disease. AAC was categorized into tertiles of 'no' (reference), 'low', and 'high' calcification. FJ OA was evaluated on computerised tomography (CT) scans using a four-grade scale. For analytic purposes, FJ OA was dichotomized as moderate FJ OA of at least one joint from L2-S1 vs no moderate FJ OA. We examined the association of AAC and FJ OA using logistic regression before and after adjusting for age, sex and body mass index (BMI). Furthermore, we examined the independent effect of AAC on FJ OA after including the known cardiovascular risk factors; diabetes, hypertension, hypercholesterolemia, and smoking. RESULTS Low AAC (OR 3.84 [2.33-6.34]; P<or=0.0001) and high AAC (9.84 [5.29-18.3]; <or=0.0001) were strongly associated with FJ OA, compared with the reference group. After adjusting for age, sex, and BMI, the association with FJ OA was attenuated for both low AAC (1.81 [1.01-3.27]; P=0.05) and high AAC (2.63 [0.99-5.23]; P=0.05). BMI and age were independently and significantly associated with FJ OA. The addition of cardiovascular risk factors to the model did not substantially change parameter estimates for either AAC tertile. CONCLUSIONS AACs were associated with FJ OA in this community-based population, when adjusting for epidemiologic factors associated with spinal degeneration, and cardiovascular risk factors. Potentially modifiable risk factors for facet degeneration unrelated to conventional biomechanical paradigms may exist. This study is limited by cross-sectional design; longitudinal studies are needed.
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Affiliation(s)
- Pradeep Suri
- Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, USA,New England Baptist Hospital, Boston, MA, USA,Spaulding Rehabilitation Hospital, Boston, MA, USA,VA Boston Healthcare System, Boston, MA, USA
| | - Jeffrey N. Katz
- Division of Rheumatology, Immunology and Allergy, Department of Medicine and Department of Orthopedic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - James Rainville
- Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, USA,New England Baptist Hospital, Boston, MA, USA
| | - Leonid Kalichman
- New England Baptist Hospital, Boston, MA, USA,Department of Physical Therapy, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ali Guermazi
- Boston University School of Medicine, Boston, MA, USA
| | - David J Hunter
- New England Baptist Hospital, Boston, MA, USA,Northern Clinical School, The University of Sydney, Sydney, New South Wales, Australia
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Jackson JJ, Wood D, Bogg T, Walton KE, Harms PD, Roberts BW. What do conscientious people do? Development and validation of the Behavioral Indicators of Conscientiousness (BIC). J Res Pers 2010; 44:501-511. [PMID: 21278818 PMCID: PMC3028204 DOI: 10.1016/j.jrp.2010.06.005] [Citation(s) in RCA: 110] [Impact Index Per Article: 7.9] [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] [Indexed: 10/19/2022]
Abstract
Typical assessments of personality traits collapse behaviors, thoughts, and feelings into a single measure without distinguishing between these different manifestations. To address this lack of specification, the current study develops and validates a measure that assesses a number of broad behaviors associated with the personality trait of conscientiousness (the Behavioral Indicators of Conscientiousness; BIC). Findings suggest that the lower-order structure of conscientious behaviors is mostly similar to the lower-order structure in extant trait measures. Furthermore, a daily diary method was used to validate the BIC against frequency counts of conscientious behavior. Overall, the results identify specific behaviors that conscientious individuals tend to perform and highlight possible advantages of this approach over broad trait assessment.
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Affiliation(s)
- Joshua J. Jackson
- Department of Psychology, University of Illinois, Urbana-Champaign, Champaign, IL 61820, USA
| | - Dustin Wood
- Department of Psychology, Wake Forest University, Winston-Salem, NC, USA
| | - Tim Bogg
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA
| | - Kate E. Walton
- Department of Psychology, St. John’s University, Queens, NY, USA
| | - Peter D. Harms
- Department of Management, University of Nebraska– Lincoln, Lincoln, NE, USA
| | - Brent W. Roberts
- Department of Psychology, University of Illinois, Urbana-Champaign, Champaign, IL 61820, USA
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