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O'Brien CP, Miao RK, Shayesteh Zeraati A, Lee G, Sargent EH, Sinton D. CO 2 Electrolyzers. Chem Rev 2024; 124:3648-3693. [PMID: 38518224 DOI: 10.1021/acs.chemrev.3c00206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2024]
Abstract
CO2 electrolyzers have progressed rapidly in energy efficiency and catalyst selectivity toward valuable chemical feedstocks and fuels, such as syngas, ethylene, ethanol, and methane. However, each component within these complex systems influences the overall performance, and the further advances needed to realize commercialization will require an approach that considers the whole process, with the electrochemical cell at the center. Beyond the cell boundaries, the electrolyzer must integrate with upstream CO2 feeds and downstream separation processes in a way that minimizes overall product energy intensity and presents viable use cases. Here we begin by describing upstream CO2 sources, their energy intensities, and impurities. We then focus on the cell, the most common CO2 electrolyzer system architectures, and each component within these systems. We evaluate the energy savings and the feasibility of alternative approaches including integration with CO2 capture, direct conversion of flue gas and two-step conversion via carbon monoxide. We evaluate pathways that minimize downstream separations and produce concentrated streams compatible with existing sectors. Applying this comprehensive upstream-to-downstream approach, we highlight the most promising routes, and outlook, for electrochemical CO2 reduction.
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Affiliation(s)
- Colin P O'Brien
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
| | - Rui Kai Miao
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
| | - Ali Shayesteh Zeraati
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
| | - Geonhui Lee
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 1A4, Canada
| | - Edward H Sargent
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 1A4, Canada
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Department of Electrical and Computer Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - David Sinton
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario M5S 3G8, Canada
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2
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Shirzadi E, Jin Q, Zeraati AS, Dorakhan R, Goncalves TJ, Abed J, Lee BH, Rasouli AS, Wicks J, Zhang J, Ou P, Boureau V, Park S, Ni W, Lee G, Tian C, Meira DM, Sinton D, Siahrostami S, Sargent EH. Ligand-modified nanoparticle surfaces influence CO electroreduction selectivity. Nat Commun 2024; 15:2995. [PMID: 38582773 PMCID: PMC10998913 DOI: 10.1038/s41467-024-47319-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 03/25/2024] [Indexed: 04/08/2024] Open
Abstract
Improving the kinetics and selectivity of CO2/CO electroreduction to valuable multi-carbon products is a challenge for science and is a requirement for practical relevance. Here we develop a thiol-modified surface ligand strategy that promotes electrochemical CO-to-acetate. We explore a picture wherein nucleophilic interaction between the lone pairs of sulfur and the empty orbitals of reaction intermediates contributes to making the acetate pathway more energetically accessible. Density functional theory calculations and Raman spectroscopy suggest a mechanism where the nucleophilic interaction increases the sp2 hybridization of CO(ad), facilitating the rate-determining step, CO* to (CHO)*. We find that the ligands stabilize the (HOOC-CH2)* intermediate, a key intermediate in the acetate pathway. In-situ Raman spectroscopy shows shifts in C-O, Cu-C, and C-S vibrational frequencies that agree with a picture of surface ligand-intermediate interactions. A Faradaic efficiency of 70% is obtained on optimized thiol-capped Cu catalysts, with onset potentials 100 mV lower than in the case of reference Cu catalysts.
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Affiliation(s)
- Erfan Shirzadi
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON, Canada
| | - Qiu Jin
- Department of Chemistry, University of Calgary, 2500, Calgary, AB, Canada
| | - Ali Shayesteh Zeraati
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, ON, Canada
| | - Roham Dorakhan
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON, Canada
| | - Tiago J Goncalves
- Department of Chemistry, University of Calgary, 2500, Calgary, AB, Canada
| | - Jehad Abed
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON, Canada
- Department of Materials Science and Engineering, University of Toronto, Toronto, ON, Canada
| | - Byoung-Hoon Lee
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON, Canada
| | - Armin Sedighian Rasouli
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON, Canada
| | - Joshua Wicks
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON, Canada
| | - Jinqiang Zhang
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON, Canada
| | - Pengfei Ou
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON, Canada
| | - Victor Boureau
- Interdisciplinary Center for Electron Microscopy, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Sungjin Park
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON, Canada
| | - Weiyan Ni
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON, Canada
| | - Geonhui Lee
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON, Canada
| | - Cong Tian
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON, Canada
| | - Debora Motta Meira
- CLS@APS Sector 20, Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL, 60439, USA
- Canadian Light Source Inc., 44 Innovation Boulevard, Saskatoon, SK, S7N 2V3, Canada
| | - David Sinton
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, ON, Canada
| | | | - Edward H Sargent
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON, Canada.
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Han S, Lee G, Kim D, Kim J, Kim I, Kim H, Kim D. Selective Suppression of Integrin-Ligand Binding by Single Molecular Tension Probes Mediates Directional Cell Migration. Adv Sci (Weinh) 2024; 11:e2306497. [PMID: 38311584 PMCID: PMC11005741 DOI: 10.1002/advs.202306497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 01/04/2024] [Indexed: 02/06/2024]
Abstract
Cell migration interacting with continuously changing microenvironment, is one of the most essential cellular functions, participating in embryonic development, wound repair, immune response, and cancer metastasis. The migration process is finely tuned by integrin-mediated binding to ligand molecules. Although numerous biochemical pathways orchestrating cell adhesion and motility are identified, how subcellular forces between the cell and extracellular matrix regulate intracellular signaling for cell migration remains unclear. Here, it is showed that a molecular binding force across integrin subunits determines directional migration by regulating tension-dependent focal contact formation and focal adhesion kinase phosphorylation. Molecular binding strength between integrin αvβ3 and fibronectin is precisely manipulated by developing molecular tension probes that control the mechanical tolerance applied to cell-substrate interfaces. This data reveals that integrin-mediated molecular binding force reduction suppresses cell spreading and focal adhesion formation, attenuating the focal adhesion kinase (FAK) phosphorylation that regulates the persistence of cell migration. These results further demonstrate that manipulating subcellular binding forces at the molecular level can recapitulate differential cell migration in response to changes of substrate rigidity that determines the physical condition of extracellular microenvironment. Novel insights is provided into the subcellular mechanics behind global mechanical adaptation of the cell to surrounding tissue environments featuring distinct biophysical signatures.
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Affiliation(s)
- Seong‐Beom Han
- KU‐KIST Graduate School of Converging Science and TechnologyKorea UniversitySeoul02841Republic of Korea
| | - Geonhui Lee
- KU‐KIST Graduate School of Converging Science and TechnologyKorea UniversitySeoul02841Republic of Korea
| | - Daesan Kim
- KU‐KIST Graduate School of Converging Science and TechnologyKorea UniversitySeoul02841Republic of Korea
| | - Jeong‐Ki Kim
- KU‐KIST Graduate School of Converging Science and TechnologyKorea UniversitySeoul02841Republic of Korea
| | - In‐San Kim
- KU‐KIST Graduate School of Converging Science and TechnologyKorea UniversitySeoul02841Republic of Korea
- Biomedical Research CenterKorea Institute of Science and TechnologySeoul02792Republic of Korea
| | - Hae‐Won Kim
- Institute of Tissue Regeneration Engineering (ITREN)Dankook UniversityCheonan31116Republic of Korea
- Department of Biomaterials Science in College of Dentistry & Department of Nanobiomedical Science in Graduate SchoolDankook UniversityCheonan31116Republic of Korea
| | - Dong‐Hwee Kim
- KU‐KIST Graduate School of Converging Science and TechnologyKorea UniversitySeoul02841Republic of Korea
- Biomedical Research CenterKorea Institute of Science and TechnologySeoul02792Republic of Korea
- Department of Integrative Energy EngineeringCollege of EngineeringKorea UniversitySeoul02841Republic of Korea
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Lee G, Wong C, Cho A, West JJ, Crawford AJ, Russo GC, Si BR, Kim J, Hoffner L, Jang C, Jung M, Leone RD, Konstantopoulos K, Ewald AJ, Wirtz D, Jeong S. Serine synthesis pathway upregulated by E-cadherin is essential for the proliferation and metastasis of breast cancers. bioRxiv 2024:2023.05.24.541452. [PMID: 37292712 PMCID: PMC10245808 DOI: 10.1101/2023.05.24.541452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The loss of E-cadherin (E-cad), an epithelial cell adhesion molecule, has been implicated in the epithelial-mesenchymal transition (EMT), promoting invasion and migration of cancer cells and, consequently, metastasis. However, recent studies have demonstrated that E-cad supports the survival and proliferation of metastatic cancer cells, suggesting that our understanding of E-cad in metastasis is far from comprehensive. Here, we report that E-cad upregulates the de novo serine synthesis pathway (SSP) in breast cancer cells. The SSP provides metabolic precursors for biosynthesis and resistance to oxidative stress, critically beneficial for E-cad-positive breast cancer cells to achieve faster tumor growth and more metastases. Inhibition of PHGDH, a rate-limiting enzyme in the SSP, significantly and specifically hampered the proliferation of E-cad-positive breast cancer cells and rendered them vulnerable to oxidative stress, inhibiting their metastatic potential. Our findings reveal that E-cad adhesion molecule significantly reprograms cellular metabolism, promoting tumor growth and metastasis of breast cancers.
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Lee G, Han SB, Kim SH, Jeong S, Kim DH. Stretching of porous poly (l-lactide-co-ε-caprolactone) membranes regulates the differentiation of mesenchymal stem cells. Front Cell Dev Biol 2024; 12:1303688. [PMID: 38333594 PMCID: PMC10850303 DOI: 10.3389/fcell.2024.1303688] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 01/12/2024] [Indexed: 02/10/2024] Open
Abstract
Background: Among a variety of biomaterials supporting cell growth for therapeutic applications, poly (l-lactide-co-ε-caprolactone) (PLCL) has been considered as one of the most attractive scaffolds for tissue engineering owing to its superior mechanical strength, biocompatibility, and processibility. Although extensive studies have been conducted on the relationship between the microstructure of polymeric materials and their mechanical properties, the use of the fine-tuned morphology and mechanical strength of PLCL membranes in stem cell differentiation has not yet been studied. Methods: PLCL membranes were crystallized in a combination of diverse solvent-nonsolvent mixtures, including methanol (MeOH), isopropanol (IPA), chloroform (CF), and distilled water (DW), with different solvent polarities. A PLCL membrane with high mechanical strength induced by limited pore formation was placed in a custom bioreactor mimicking the reproducible physiological microenvironment of the vascular system to promote the differentiation of mesenchymal stem cells (MSCs) into smooth muscle cells (SMCs). Results: We developed a simple, cost-effective method for fabricating porosity-controlled PLCL membranes based on the crystallization of copolymer chains in a combination of solvents and non-solvents. We confirmed that an increase in the ratio of the non-solvent increased the chain aggregation of PLCL by slow evaporation, leading to improved mechanical properties of the PLCL membrane. Furthermore, we demonstrated that the cyclic stretching of PLCL membranes induced MSC differentiation into SMCs within 10 days of culture. Conclusion: The combination of solvent and non-solvent casting for PLCL solidification can be used to fabricate mechanically durable polymer membranes for use as mechanosensitive scaffolds for stem cell differentiation.
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Affiliation(s)
- Geonhui Lee
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, United States
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, United States
| | - Seong-Beom Han
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, Republic of Korea
| | - Soo Hyun Kim
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, Republic of Korea
- Biomaterials Research Center, Biomedical Research Division, Korea Institute of Science and Technology, Seoul, Republic of Korea
| | - Sangmoo Jeong
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, United States
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, United States
| | - Dong-Hwee Kim
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, Republic of Korea
- Biomaterials Research Center, Biomedical Research Division, Korea Institute of Science and Technology, Seoul, Republic of Korea
- Department of Integrative Energy Engineering, College of Engineering, Korea University, Seoul, Republic of Korea
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Mast M, Leong A, Korreman S, Lee G, Probst H, Scherer P, Tsang Y. ESTRO-ACROP guideline for positioning, immobilisation and setup verification for local and loco-regional photon breast cancer irradiation. Tech Innov Patient Support Radiat Oncol 2023; 28:100219. [PMID: 37745181 PMCID: PMC10511493 DOI: 10.1016/j.tipsro.2023.100219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 09/10/2023] [Indexed: 09/26/2023] Open
Affiliation(s)
- M.E. Mast
- Department of Radiation Oncology, Haaglanden Medical Center, Leidschendam, The Netherlands
| | - A. Leong
- Department of Radiation Therapy, University of Otago, Wellington, New Zealand
- Bowen Icon Cancer Centre, Wellington, New Zealand
| | - S.S. Korreman
- Department of Clinical Medicine, Aarhus University, Denmark
- Department of Oncology, Aarhus University Hospital, Denmark
- Danish Center for Particle Therapy, Aarhus University Hospital, Denmark
| | - G. Lee
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, Canada
| | - H. Probst
- Sheffield Hallam University, Sheffield, United Kingdom
| | - P. Scherer
- Department of Radiotherapy and Radio-Oncology, LKH Salzburg, Paracelsus Medical University Clinics, Salzburg, Austria
| | - Y. Tsang
- Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, Canada
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Lyons KS, Herity N, Lee G, Talbot C, McKeeman G. Assay interference as a cause of false positive troponin T elevation in emergency department patients. Int J Cardiol 2023; 389:131165. [PMID: 37423573 DOI: 10.1016/j.ijcard.2023.131165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 06/30/2023] [Accepted: 07/06/2023] [Indexed: 07/11/2023]
Abstract
BACKGROUND Troponin assays are used in the diagnosis of myocardial injury and may show elevated results for a variety of reasons. However it is increasingly recognised that cardiac troponin elevation may in some cases be due to assay interference. This is of significant importance as a misdiagnosis of myocardial injury may lead to unnecessary and potentially harmful investigation and treatment for patients. We sought to confirm the accuracy of cardiac high sensitivity troponin T (chsTnT) elevation in an unselected group of patients presenting to the emergency department, by using a second confirmatory cardiac high sensitivity troponin I (chsTnI) assay. METHODS We identified patients presenting to two local emergency departments over a five-day period who had chsTnT levels measured as part of routine clinical care. All samples with elevated chsTnT levels (above the 99% centile URL) were retested for chsTnI in order to confirm true myocardial injury. RESULTS A total of 74 samples from 54 patients were analysed for chsTnT and chsTnI. 7 samples (9.5%) had chsTnI levels < 5 ng/L suggesting assay interference as the cause of chsTnT elevation. CONCLUSIONS Assay interference leading to false positive troponin elevation may be more common than many physicians appreciate and can potentially lead to harmful investigation and treatment for patients. In cases where the diagnosis of myocardial injury is uncertain, a second alternative troponin assay should be performed to confirm true myocardial injury.
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Affiliation(s)
- K S Lyons
- Northern HSC Trust, Antrim Area Hospital, Bush Road, Antrim BT41 2RL, UK.
| | - N Herity
- Belfast HSC Trust, First Floor, West Wing, Royal Victoria Hospital, Grosvenor Road, Belfast BT12 6BA, UK
| | - G Lee
- Department of Clinical Biochemistry & Diagnostic Endocrinology, Mater Misericordiae University Hospital and School of Medicine, University College Dublin, Ireland
| | - C Talbot
- Department of Clinical Biochemistry & Diagnostic Endocrinology, Mater Misericordiae University Hospital and School of Medicine, University College Dublin, Ireland
| | - G McKeeman
- Belfast HSC Trust, First Floor, West Wing, Royal Victoria Hospital, Grosvenor Road, Belfast BT12 6BA, UK
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Lee G, Aitelli A, Niemierko A, Lamba N, Kim DW, Chapman PH, Curry W, Oh KS, Barker Ii FG, Shih HA. Adjuvant Radiotherapy in Atypical Meningioma: Are the Risks Worth the Benefit? Int J Radiat Oncol Biol Phys 2023; 117:e125. [PMID: 37784679 DOI: 10.1016/j.ijrobp.2023.06.918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Adjuvant radiotherapy (RT) improves progression-free survival (PFS) in atypical meningiomas. Herein, we assess whether the treatment-related acute and long-term toxicity of upfront RT in atypical meningioma patients versus surveillance merits the PFS benefit. MATERIALS/METHODS In our prior single institution retrospective study of 230 patients with resected intracranial atypical meningiomas between 2000-2015, adjuvant RT was associated with a significantly lower risk of progression/recurrence compared to surveillance (HR = 0.21 [95% CI 0.11-0.41]; p<0.01), with 36% of surveillance patients eventually requiring salvage RT. In the current study, the acute (≤6 months) and long term (>6 months) RT-related toxicities from the same patient cohort for those who received adjuvant RT (n = 51) were evaluated and compared to those who received salvage RT (n = 64) in the surveillance group. Additionally, overall treatment-related toxicity at time of last follow up was obtained for comparison between the adjuvant RT (n = 51) vs surveillance (n = 179) group. All toxicities were graded per CTCAE v5.0. Kaplan-Meier analysis was used to calculate the cumulative incidence of toxicities; Pearson's chi-squared and log-rank test were used for comparison. RESULTS Adjuvant RT as compared to salvage RT was generally associated with greater RT-related toxicities both in the acute (90% vs 69%, p = 0.006) and long term (57% vs 33%, p = 0.010). While there was no significant difference in grade 3-4 acute toxicities, long term grade 3-4 toxicities (including headache, seizure, vision loss, neuromotor deficit, and neurocognitive deficit) were present in 14% of adjuvant vs 3% of salvage RT group (p = 0.035). Radionecrosis occurred in 18% of adjuvant RT vs 8% of salvage RT group (p = 0.11). Between adjuvant RT vs surveillance groups, any-treatment related toxicity at last follow up was greater with adjuvant RT (31% vs 15%; p = 0.006), with trend towards greater grade 3-4 toxicities (including headache, vision loss, neuromotor deficit, neurocognitive deficit, and cerebral edema) as well (8% vs 3%; p = 0.101). Cumulative incidence of treatment-related neuromotor deficit (any grade) was significantly greater in the adjuvant RT vs surveillance group with 14% vs 2% at 10 years (p = 0.004). There was no difference in rate of cerebrovascular accident between adjuvant RT (6%) vs surveillance (4%) groups (p = 0.83). CONCLUSION Adjuvant RT for patients with atypical meningioma was associated with greater acute and long-term treatment toxicities. Potential RT-related toxicity and impact on quality-of-life should thus be carefully weighed against the tumor control benefit of RT in deciding the optimal use and timing of RT.
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Affiliation(s)
- G Lee
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA
| | - A Aitelli
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA
| | - A Niemierko
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA
| | - N Lamba
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA
| | - D W Kim
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA
| | - P H Chapman
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA
| | - W Curry
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA
| | - K S Oh
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA
| | - F G Barker Ii
- Department of Neurosurgery, Massachusetts General Hospital, Boston, MA
| | - H A Shih
- Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA
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Lee MG, Li XY, Ozden A, Wicks J, Ou P, Li Y, Dorakhan R, Lee J, Park HK, Yang JW, Chen B, Abed J, dos Reis R, Lee G, Huang JE, Peng T, Chin YH, Sinton D, Sargent EH. Selective synthesis of butane from carbon monoxide using cascade electrolysis and thermocatalysis at ambient conditions. Nat Catal 2023. [DOI: 10.1038/s41929-023-00937-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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10
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Lee G, Park S, Lee S, Song K, Kim Y, Chang W, Kim J, Park N, Kim J, Park S, Hwang I, Kim H, Kim I. Bioimpedance Analysis as a Screening Tool in Heart-Transplanted Patients. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Park J, Jung W, Lee G, Kang D, Mog Shim Y, Kim H, Cho J, Shin D. PP01.29 Prevalence and Predictor of Significant Unmet Needs in Patients who were Surgically Resected for Non-Small Cell Lung Cancer. J Thorac Oncol 2023. [DOI: 10.1016/j.jtho.2022.09.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Lee JH, Lee D, Lee HL, Lee G. Hysterectomy for uterine fibroids and stress urinary incontinence surgery: A nationwide cohort study. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00909-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Christifano DN, Crawford SA, Lee G, Brown AR, Camargo JT, Kerling EH, Gajewski BJ, Valentine CJ, Gustafson KM, DeFranco EA, Carlson SE. Docosahexaenoic acid (DHA) intake estimated from a 7-question survey identifies pregnancies most likely to benefit from high-dose DHA supplementation. Clin Nutr ESPEN 2023; 53:93-99. [PMID: 36657936 PMCID: PMC9852746 DOI: 10.1016/j.clnesp.2022.12.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 11/17/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022]
Abstract
BACKGROUND Two randomized trials found women with low blood docosahexaenoic acid (DHA; an omega 3 fatty acid) had fewer early preterm births (<34 weeks gestation) if they were assigned to high dose DHA supplementation, however, there is currently no capacity for clinicians who care for pregnancies to obtain a blood assessment of DHA. Determining a way to identify women with low DHA intake whose risk could be lowered by high dose DHA supplementation is desired. OBJECTIVE To determine if assessing DHA intake can identify pregnancies that benefit from high dose DHA supplementation. STUDY DESIGN This secondary analysis used birth data from 1310 pregnant women who completed a 7-question food frequency questionnaire (DHA-FFQ) at 16.8 ± 2.5 weeks gestation that is validated to assess DHA status. They were then randomly assigned to a standard (200 mg/day) or high dose (800 or 1000 mg/day) DHA supplement for the remainder of pregnancy. Bayesian logistic regressions were fitted for early preterm birth and preterm birth as a function of DHA intake and assigned DHA dose. RESULTS Participants who consumed less than 150 mg/day DHA prior to 20 weeks' gestation (n = 810/1310, 58.1%) had a lower Bayesian posterior probability (pp) of early preterm birth if they were assigned to high dose DHA supplementation (1.4% vs 3.9%, pp = 0.99). The effect on preterm birth (<37 weeks) was also significant (11.3% vs 14.8%, pp = 0.97). CONCLUSION The DHA-FFQ can identify pregnancies that will benefit most from high dose DHA supplementation and reduce the risk of preterm birth. The DHA-FFQ is low burden to providers and patients and could be easily implemented in obstetrical practice.
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Affiliation(s)
- D N Christifano
- The University of Kansas Medical Center, Department of Dietetics and Nutrition, Kansas City, KS, USA; The University of Kansas Medical Center, Hoglund Biomedical Imaging Center, Kansas City, KS, USA
| | - S A Crawford
- The University of Kansas Medical Center, Department of Dietetics and Nutrition, Kansas City, KS, USA
| | - G Lee
- The University of Kansas Medical Center, Department of Obstetrics and Gynecology, Kansas City, KS, USA
| | - A R Brown
- The University of Kansas Medical Center, Department of Biostatistics & Data Science, Kansas City, KS, USA
| | - J T Camargo
- The University of Kansas Medical Center, Department of Dietetics and Nutrition, Kansas City, KS, USA; The University of Kansas Medical Center, Department of Urology, Kansas City, KS, USA
| | - E H Kerling
- The University of Kansas Medical Center, Department of Dietetics and Nutrition, Kansas City, KS, USA
| | - B J Gajewski
- The University of Kansas Medical Center, Department of Biostatistics & Data Science, Kansas City, KS, USA
| | - C J Valentine
- Banner University Medical Center, The University of Arizona, Department of Pediatrics, Tucson, AZ, USA
| | - K M Gustafson
- The University of Kansas Medical Center, Hoglund Biomedical Imaging Center, Kansas City, KS, USA; The University of Kansas Medical Center, Department of Neurology, Kansas City, KS, USA
| | - E A DeFranco
- The University of Cincinnati, Department of Obstetrics and Gynecology, Cincinnati, OH, USA
| | - S E Carlson
- The University of Kansas Medical Center, Department of Dietetics and Nutrition, Kansas City, KS, USA.
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Jo H, Lee G, Park D, Hwang S, Hong KH, Yu TJ. Spatio-temporal coupling of RMS errors in laser amplification. Opt Express 2023; 31:1868-1877. [PMID: 36785212 DOI: 10.1364/oe.479632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 12/14/2022] [Indexed: 06/18/2023]
Abstract
We developed a theoretical model for the relationship between the input and amplified laser beams of energy stability and spatial uniformity in the amplification process. 10 Hz, 8 ns, 1064 nm Nd:YAG Q-switched resonator with Nd:YAG main amplifier was employed for the experiment. The theoretical model simulation and Frantz-Nodvik simulation were performed by utilizing the obtained beam image, acquired energy from the experiment, and stored fluence from the gain medium. The result indicated that the fluctuation of the spatial distribution in a single beam influences the stability of temporally distributed energy during the amplification process of the laser beam, thereby improving energy stability.
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Dave R, Vickery B, Weselman B, Lee G. WHY DO GENERALISTS ORDER FOOD ALLERGEN IGE PANELS? A QUALITY IMPROVEMENT NEEDS ASSESSMENT. Ann Allergy Asthma Immunol 2022. [DOI: 10.1016/j.anai.2022.08.684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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16
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Xu J, Chandrakasan S, Lee G. AN ATYPICAL PRESENTATION OF FAMILIAL MEDITERRANEAN FEVER. Ann Allergy Asthma Immunol 2022. [DOI: 10.1016/j.anai.2022.08.868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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17
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Segan L, Canovas R, Nanayakkara S, Chieng D, Prabhu S, Ling LH, Voskoboinik A, Sugumar H, Lee G, Morton J, Kalman J, Kistler P. Development and validation of the HARMS2-AF lifestyle risk score to predict incident AF. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Lifestyle risk factors (RFs) are a modifiable target in atrial fibrillation (AF) management. However, the relative contribution of individual lifestyle RFs to AF incidence has not been described.
Purpose
Development and validation of a novel AF-lifestyle risk score to determine AF risk in the general population.
Methods
The UK Biobank (UKB) is a large prospective cohort with outcomes measured >10 years. In the UKB, we performed regression analysis of AF lifestyle RFs which were then evaluated in a multivariable model and a weighted score was developed. Next, the risk score was externally validated in the Framingham Heart Study (FHS) population. Kaplan-Meier estimates ascertained the 10-year risk of AF development.
Results
In the UKB, AF incidence was 5.3% among 302,926 participants, with a median time to AF 7.3 years (IQR 4.3–9.8). Hypertension, sleep apnoea, male sex, age, obesity (BMI>30 kg/m2), alcohol and smoking were predictive variables (all p<0.001); physical inactivity (OR 1.02,95% CI 0.97–1.10, p=0.3), diabetes (OR 0.98,95% CI 0.91–1.06, p=0.2) and BMI 27–30 kg/m2 (OR 1.02, 95% CI 0.97–1.07, p=0.424) were not significant. The HARMS2-AF score (Figure 1) had similar predictive performance (AUC=0.782, LogLoss 0.178, Brier Score 0.046) to the unweighted regression model (AUC 0.808) in the UKB. Validation in the FHS (AF incidence 6.7% of 7206 participants) maintained excellent predictive performance with an AUC of 0.747 (95% CI 0.724–0.769, Figure 2). A higher HARMS2-AF score (>5 points) was associated with a heightened 10-year AF risk (score 5–9: OR 9.35, score 10–14: OR 33.34).
Conclusions
The HARMS2-AF score is a novel lifestyle risk score which may help identify individuals at risk of AF and assists in general population screening.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- L Segan
- The Alfred Hospital , Melbourne , Australia
| | - R Canovas
- Baker Heart and Diabetes Institute , Melbourne , Australia
| | | | - D Chieng
- The Alfred Hospital , Melbourne , Australia
| | - S Prabhu
- The Alfred Hospital , Melbourne , Australia
| | - L H Ling
- The Alfred Hospital , Melbourne , Australia
| | | | - H Sugumar
- The Alfred Hospital , Melbourne , Australia
| | - G Lee
- Royal Melbourne Hospital, Department of Cardiology , Melbourne , Australia
| | - J Morton
- Royal Melbourne Hospital, Department of Cardiology , Melbourne , Australia
| | - J Kalman
- Royal Melbourne Hospital, Department of Cardiology , Melbourne , Australia
| | - P Kistler
- The Alfred Hospital , Melbourne , Australia
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Chieng D, Sugumar H, Segan L, Al-Kaisey A, Hawson J, Prabhu S, Voskoboinik A, Morton JB, Lee G, Mariani J, La Gerche A, Kistler PM, Kalman JM, Kaye DM, Ling LH. Catheter ablation in atrial fibrillation and heart failure with preserved ejection fraction improves peak pulmonary capillary wedge pressure, exercise capacity and quality of life: RCT STALL HFpEF. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Atrial fibrillation (AF) frequently accompanies heart failure with preserved ejection fraction (HFpEF). AF exacerbates HFpEF through adverse haemodynamic effects. In turn, HFpEF promotes AF through adverse left atrial remodelling. Observational data suggest sinus rhythm restoration improves outcomes in patients with AF and HFpEF. However, there are no randomised data examining the effects of rhythm control with catheter-based AF ablation on HFpEF outcomes.
Purpose
To compare the effects of AF ablation versus usual medical therapy on markers of HFpEF severity, including exercise haemodynamics, natriuretic peptide levels and patient symptoms.
Methods
Patients with symptomatic AF and HFpEF underwent exercise right heart catheterization (RHC) and cardiopulmonary exercise testing (CPET). HFpEF diagnosis was based on left ventricular ejection fraction (LVEF) ≥50%, elevated natriuretic peptide and echocardiographic diastolic impairment. HFpEF was confirmed on exercise RHC based on peak exercise pulmonary capillary wedge pressure (PCWP) of ≥25mmHg. Patients were randomised to AF ablation versus medical therapy, with investigations repeated at 6 months. The primary outcome was change in PCWP on follow-up.
Results
31 patients aged 66.1±7.5 years were randomized to AF ablation (16) versus medical therapy (15), with 51.6% female and 80.6% persistent AF. Baseline characteristics were comparable across groups. Paired analyses of ablation cohort showed significant reductions in peak PCWP (29.6±3.7 vs 25.9±4.6 mmHg, p<0.01), PCWP indexed for workload (39.0±57.9 vs 33.0±50.5 mmHg/W/kg, p<0.01), and BNP (146.2±80.5 vs 82.2±75.4 pg/mL, p=0.01); and increased resting cardiac output (4.6±0.9 vs 5.6±1.2 L/min, p=0.01), peak cardiac output (9.6±4.2 vs 10.4±3.7 L/min, p=0.02), peak (30s averaged) VO2 (1875.1±759.2 vs 2193.7±878.1 mL/min, p<0.01), peak absolute VO2 (1937.3±739.3 vs 2216.3±861.9 mL/min, p<0.01), peak (30s averaged) relative VO2 (19.4±5.9 vs 22.9±7.4 ml/kg/min) and peak workload (162.0±81.1 vs 184.4±83.4 W, p<0.01). Quality of life scores improved: AFEQT (45.3±20.9 vs 75±20.7, p<0.01) and MLHF (53±23.3 vs 17.5±22.8, p<0.01). Reversal of HFpEF by PCWP criteria occurred in 31.2% following AF ablation, and 50% among those free from arrhythmia recurrence. In the medical arm, there were no significant differences in RHC, CPET, and natriuretic peptide outcomes on follow-up versus baseline. Repeated measures mixed ANOVA testing showed significant time-randomisation interaction on peak VO2, absolute peak VO2, peak relative VO2, AFEQT/ MLHF scores, suggesting that significant improvements in these parameters were related to AF ablation.
Conclusion
In patients with concomitant AF and HFpEF, AF ablation improves invasive exercise haemodynamic parameters, increases exercise capacity, and enhances quality of life. Successful AF ablation may reverse the clinical syndrome of HFpEF in a subset of cases.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- D Chieng
- Baker Heart and Diabetes Institute , Melbourne , Australia
| | - H Sugumar
- Baker Heart and Diabetes Institute , Melbourne , Australia
| | - L Segan
- Baker Heart and Diabetes Institute , Melbourne , Australia
| | - A Al-Kaisey
- Royal Melbourne Hospital, Cardiology , Melbourne , Australia
| | - J Hawson
- Royal Melbourne Hospital, Cardiology , Melbourne , Australia
| | - S Prabhu
- Baker Heart and Diabetes Institute , Melbourne , Australia
| | - A Voskoboinik
- Baker Heart and Diabetes Institute , Melbourne , Australia
| | - J B Morton
- Royal Melbourne Hospital, Cardiology , Melbourne , Australia
| | - G Lee
- Royal Melbourne Hospital, Cardiology , Melbourne , Australia
| | - J Mariani
- The Alfred Hospital , Melbourne , Australia
| | - A La Gerche
- Baker Heart and Diabetes Institute , Melbourne , Australia
| | - P M Kistler
- Baker Heart and Diabetes Institute , Melbourne , Australia
| | - J M Kalman
- Royal Melbourne Hospital, Cardiology , Melbourne , Australia
| | - D M Kaye
- Baker Heart and Diabetes Institute , Melbourne , Australia
| | - L H Ling
- Baker Heart and Diabetes Institute , Melbourne , Australia
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Segan L, Nanayakkara S, Spear E, Shirwaiker A, Chieng D, Sugumar H, Ling LH, Prabhu S, Lee G, Morton J, Kalman J, Voskoboinik A, Kistler P. Clinical risk prediction for left atrial appendage thrombus among patients with atrial fibrillation. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Exclusion of left atrial appendage thrombus (LAAT) by transoesophageal echocardiography (TOE) is recommended in patients with inadequate anticoagulation prior to direct cardioversion (DCR) or catheter ablation for atrial fibrillation/flutter (AF/AFL). LAAT risk factors in this population remain poorly defined.
Purpose
Determine LAAT predictors in AF/AFL patients undergoing pre-procedural TOE.
Methods
We evaluated available clinical and transthoracic echocardiographic (TTE) parameters in AF/AFL patients undergoing TOE between 1999–2022 in our institution in Melbourne, Australia. Regression analysis identified predictors of LAAT, which were applied to a weighted score developed in the derivation cohort (70%) and validated in the remaining 30%.
Results
Of 627 patients (age 62±12 years, 27% female, AF 84%,AFL 16%, left ventricular ejection fraction (LVEF) 44±20%), 24% had LAAT and 13.8% dense spontaneous echo contrast precluding DCR. Anticoagulation was NOAC 56.5%, warfarin 32.1% and none in 11.4%. In the LAAT cohort, thrombus resolution occurred in 39% on serial transoesophageal imaging with a median time to resolution of 131 days (IQR 54–398).
Diabetes (p=0.004), prior stroke (p=0.009), coronary disease (p=0.015), renal impairment (p<0.001) and CHADS2VASc >2 (73% vs. 55%, p<0.001) were higher in the LAAT cohort. Age (p=0.093), gender (p=0.689), BMI (p=0.828), anticoagulant type (p=0.316) and diabetes (p=0.107) were not univariate predictors, whereas anticoagulation duration (<30 days), creatinine and TTE markers of remodeling (LVEF, LAVI, RVSP and TAPSE) were independent predictors on univariate and multivariate regression; CHADS2VASc was not significant after adjustment (p=0.090). The weighted risk model included continuous (age, creatinine, LVEF, LAVI, TAPSE and RVSP) and categorical (anticoagulation duration) variables with excellent predictive performance: AUC 0.872 (95% CI 0.798–0.946), PPV 91%, NPV 70% and accuracy 80%.
Conclusion
A novel LAAT risk model comprising clinical and echocardiographic parameters enhances risk prediction over CHADS2VASc in AF/AFL and may guide the need for pre-procedural TOE imaging.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- L Segan
- The Alfred Hospital , Melbourne , Australia
| | | | - E Spear
- Monash Health, General Medicine , Melbourne , Australia
| | | | - D Chieng
- The Alfred Hospital , Melbourne , Australia
| | - H Sugumar
- The Alfred Hospital , Melbourne , Australia
| | - L H Ling
- The Alfred Hospital , Melbourne , Australia
| | - S Prabhu
- The Alfred Hospital , Melbourne , Australia
| | - G Lee
- Royal Melbourne Hospital, Department of Cardiology , Melbourne , Australia
| | - J Morton
- Royal Melbourne Hospital, Department of Cardiology , Melbourne , Australia
| | - J Kalman
- Royal Melbourne Hospital, Department of Cardiology , Melbourne , Australia
| | | | - P Kistler
- The Alfred Hospital , Melbourne , Australia
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Lee G, Durante A, Vellone E, Dellafiore F, Cagginelli G, Khan M, Baker EE, Khatib R. Patients and healthcare professionals views on injectables for cardiovascular disease. Eur Heart J 2022. [PMCID: PMC9619637 DOI: 10.1093/eurheartj/ehac544.2757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Introduction Injectable medicines are increasingly used to manage risk factors for cardiovascular (CV) events, such as PCSK-9 inhibitors in dyslipidaemia and GLP-1 agonists in diabetes. However, there is a paucity of data around the administrative and clinical practicalities when using these injectables, and limited information on patient and healthcare professionals' perceptions. Purpose To identify the facilitators and barriers on the use of injectable therapies with CV benefits by undertaking interviews with patients, caregivers and healthcare professionals (HCPs). Methods Interviews were conducted via telephone and using MS Teams due to Covid-19 restrictions in the United Kingdom (London and Leeds) and Italy (Rome and Milan) in 2021. Coding was undertaken using NVivo and thematic analysis performed. Results A total of 56 patients were interviewed: 30 in the U.K. (mean age 66 yrs, 60% male) and 26 patients in Italy (mean age 63 yrs, 80% male) and 11 caregivers (mean age 59 yrs, 73% female). A total of 38 HCPs were interviewed, 19 in each country and composed of physicians (n=18), pharmacists (n=10), nurses (n=9) and pharmacy technician (n=1). Three distinct themes were identified: (i) Organisational and governance issues - relating to prescribing restrictions and availability of the drugs locally (PCSK9i are initiated and supplied from hospitals) and lack of communication between hospital and primary care setting; (ii) Clinical issues around HCPs' skills and experience - including: lack of experience with these injectables, lack of time to provide education to patients and caregivers, therapeutic inertia (HCPs not adopting a change in practice despite the evidence or due to bureaucratic restrictions) as well as lack of knowledge on long-term effects, and finally (iii) Patient-related issues - relating to behaviours and beliefs such as reluctance about using injectable therapies, and lack of education about these injectables in terms of indications/clinical benefits for use. Despite some differences in the prescribing of these injectables in the two countries, the analysis captured similar facilitators and barriers. Facilitators included prior use of injectables (e.g. insulin), and the ability to reach a clinical target of lower cholesterol by having just a “one shot”. HCPs stated that access to rapid pathology tests would aid uptake of injectables with CV benefit as well as having educational tools on these injectables in practice. Conclusion This qualitative study identified barriers to initiation, continuation, and adherence with injectable therapies with CV benefits but also highlighted areas where changes can be made especially around education and support for patients and HCPs. Funding Acknowledgement Type of funding sources: Private grant(s) and/or Sponsorship. Main funding source(s): ACNAP education grant. Sponsored by Amgem and Novo Nordisk
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Affiliation(s)
- G Lee
- King's College London , London , United Kingdom
| | - A Durante
- University of Rome Tor Vergata, Nursing , Rome , Italy
| | - E Vellone
- University of Rome Tor Vergata, Nursing , Rome , Italy
| | | | - G Cagginelli
- University of Rome Tor Vergata, Nursing , Rome , Italy
| | - M Khan
- Leeds Teaching Hospitals NHS Trust, Pharmacy , Leeds , United Kingdom
| | - E E Baker
- King's College London , London , United Kingdom
| | - R Khatib
- Leeds Teaching Hospitals NHS Trust, Pharmacy , Leeds , United Kingdom
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Lee G, Malik A, Vervoort D, Tam D, Marquis-Gravel G, Gaudino M, Fremes S. PERCUTANEOUS CORONARY INTERVENTION VERSUS CORONARY ARTERY BYPASS GRAFTING FOR PATIENTS WITH LEFT VENTRICULAR SYSTOLIC DYSFUNCTION: A META-ANALYSIS OF KAPLAN-MEIER DERIVED INDIVIDUAL PATIENT DATA. Can J Cardiol 2022. [DOI: 10.1016/j.cjca.2022.08.194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
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22
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Sieger J, Brümmer F, Ahn H, Lee G, Kim S, Schill RO. Reduced ageing in the frozen state in the tardigrade
Milnesium inceptum
(Eutardigrada: Apochela). J Zool (1987) 2022. [DOI: 10.1111/jzo.13018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- J. Sieger
- Institute of Biomaterials and Biomolecular Systems, University of Stuttgart Stuttgart Germany
| | - F. Brümmer
- Institute of Biomaterials and Biomolecular Systems, University of Stuttgart Stuttgart Germany
| | - H. Ahn
- Department of Life Sciences Pohang University of Science and Technology Pohang South Korea
| | - G. Lee
- Department of Life Sciences Pohang University of Science and Technology Pohang South Korea
| | - S. Kim
- Department of Life Sciences Pohang University of Science and Technology Pohang South Korea
| | - R. O. Schill
- Institute of Biomaterials and Biomolecular Systems, University of Stuttgart Stuttgart Germany
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Acharya M, Lee D, Maharjan A, Yang S, Seo S, Kang H, Sin J, Lee G, Yu Y, Park J, Lee G, Kim C, Kim H, Heo Y. P10-04 Development of alternative test method for immunotoxicity prediction on chemical substances through profiling of cytokines production from THP-1 cell line. Toxicol Lett 2022. [DOI: 10.1016/j.toxlet.2022.07.435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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24
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Kim M, Park S, Kim YH, Lee G. EP07.01-015 Multimodality Imaging for Characterization, Classification, and Staging of Malignant Pleural Mesothelioma, Focusing on MR Imaging. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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25
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Wieser J, Chen A, Lee G, Baughman L, Pope E, Franco A, Verhave B, Johnson B, Love T, Beck L, Ryan Wolf J. 388 Impact of crisaborole & tacrolimus 0.03% on patient-reported outcomes and caregiver burden in children with atopic dermatitis. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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26
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Kumar V, Lee G, Yoo J, Ro HS, Lee KW. An attention mechanism-based LSTM network for cancer kinase activity prediction. SAR QSAR Environ Res 2022; 33:631-647. [PMID: 36062308 DOI: 10.1080/1062936x.2022.2109062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 07/30/2022] [Indexed: 06/15/2023]
Abstract
Despite the endeavours and achievements made in treating cancers during the past decades, resistance to available kinase drugs continues to be a major problem in cancer therapies. Thus, it is highly desirable to develop computational models that can predict the bioactivity of a compound against cancer kinases. Here, we present a Long Short-Term Memory (LSTM) framework for predicting the activities of lead molecules against seven different kinases. A total of 14,907 compounds from the ChEMBL database were selected for model building. Two different molecular representations, namely, 2D descriptors and MACCS fingerprints were subjected to the LSTM method for the training process. We also successfully integrated an attention mechanism into our model, which helped us to interpret the contribution of chemical features on kinase activity. The attention mechanism extracted the significant chemical moieties more effectively by taking them into consideration during the activity prediction. The recorded accuracies in the test sets for both 2D descriptors and MACCS fingerprints-based models were 0.81 and 0.78, respectively. The receiver operating characteristic curve (ROC)-area under the curve (AUC) score for both models was in the range of 0.8-0.99. The proposed framework can be a good starting point for the development of new cancer kinase drugs.
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Affiliation(s)
- V Kumar
- Department of Bio & Medical Big Data (BK21 Four Program), Division of Life Sciences, Research Institute of Life Sciences, Gyeongsang National University, Jinju, Korea
| | - G Lee
- Division of Applied Life Science (BK21 Program), ABC-RLRC, PMBBRC, Gyeongsang National University, Jinju, Korea
| | - J Yoo
- Division of Applied Life Science (BK21 Program), Research Institute of Life Sciences, Gyeongsang National University, Jinju, Korea
| | - H S Ro
- Department of Bio & Medical Big Data (BK21 Four Program), Division of Life Sciences, Research Institute of Life Sciences, Gyeongsang National University, Jinju, Korea
| | - K W Lee
- Department of Bio & Medical Big Data (BK21 Four Program), Division of Life Sciences, Research Institute of Life Sciences, Gyeongsang National University, Jinju, Korea
- ANGEL i-Drug Design (AiDD), Jinju, Korea
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Christifano DN, Crawford SA, Lee G, Gajewski BJ, Carlson SE. Utility of a 7- question online screener for DHA intake. Prostaglandins Leukot Essent Fatty Acids 2022; 177:102399. [PMID: 35063885 PMCID: PMC8825685 DOI: 10.1016/j.plefa.2022.102399] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 01/06/2022] [Accepted: 01/06/2022] [Indexed: 02/03/2023]
Abstract
The secondary analyses of two large, recently completed randomized clinical trials of DHA supplementation in pregnancy found that women with a low baseline DHA status benefited from randomization to a higher dose (800 vs 0 and 1000 vs 200 mg/day DHA). To obtain DHA status, it is necessary to obtain a blood sample and conduct an analysis using gas chromatography (GC) or GC-mass spectrometry (GCMS), both barriers to clinics where pregnant women receive advice on nutrition. Participants consuming less than 150 mg/day of DHA at baseline in our recent trial had a lower risk of early preterm birth and preterm birth when assigned to 1000 vs 200 m/day DHA. DHA intake was determined using a 7-question food frequency questionnaire administered by a trained nutritionist. Because the need for trained personnel to administer the questionnaire would be a barrier to implementing this finding in clinical management of pregnancy, the goal of this study was to determine if an online version of the questionnaire could be validly completed without assistance.
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Affiliation(s)
- D N Christifano
- The University of Kansas Medical Center, Department of Dietetics and Nutrition, Kansas City, KS, USA; The University of Kansas Medical Center, Hoglund Biomedical Imaging Center, Kansas City, KS, USA
| | - S A Crawford
- The University of Kansas Medical Center, Department of Dietetics and Nutrition, Kansas City, KS, USA
| | - G Lee
- The University of Kansas Medical Center, Department of Obstetrics and Gynecology, Kansas City, KS, USA
| | - B J Gajewski
- The University of Kansas Medical Center, Department of Biostatistics & Data Science, Kansas City, KS, USA
| | - S E Carlson
- The University of Kansas Medical Center, Department of Dietetics and Nutrition, Kansas City, KS, USA.
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Al-Kaisey A, Parameswaran R, Anderson R, Chieng D, Hawson J, Voskoboinik A, Sugumar H, Wong G, West D, Azzopardi S, Joseph S, McLellan A, Ling L, Bryant C, Finch S, Sanders P, Lee G, Kistler P, Kalman J. Randomised Evaluation of the Impact of Catheter Ablation on Cognitive Function in Atrial Fibrillation. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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30
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Segan L, Chieng D, Lee G, Sugumar H, Voskoboinik A, Ling L, Morton J, Kalman J, Kistler P, Prabhu S. The Impact of Atrial Scarring on AF Recurrence and LV Recovery in AF-Mediated Cardiomyopathy. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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31
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Chieng D, Segan L, Sugumar H, Al-Kaisey A, Hawson J, Moore B, Nam M, Voskoboinik A, Prabhu S, Ling L, Ng J, Brown G, Lee G, Morton J, Debinski H, Kalman J, Kistler P. High Power Short Duration (HPSD) is Safe and Improves Outcomes for Atrial Fibrillation Ablation vs Lower Power Longer Duration (LPLD): A Prospective Multi-Centre Randomised Controlled Study (Hi-Lo HEAT trial). Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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32
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Chieng D, Canovas R, Segan L, Sugumar H, Voskoboinik A, Prabhu S, Ling L, Lee G, Morton J, Kaye D, Kalman J, Kistler P. Effects of Habitual Coffee Consumption on Incident Cardiovascular Disease, Arrhythmia, and Mortality: Long Term Outcomes From the UK Biobank. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Chieng D, Kistler P, Canovas R, Kaye D, Morton J, Lee G, Ling L, Prabhu S, Voskoboinik A, Sugumar H, Segan L, Kalman J. Regular Coffee Intake Is Safe and Associated With Improved Mortality in Prevalent Cardiovascular Disease and /or Arrhythmia. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Segan L, Canovas R, Nanayakkara S, Chieng D, Prabhu S, Sugumar H, Voskoboinik A, Ling L, Morton J, Lee G, Kalman J, Kistler P. Development and Validation of the HARMS2-AF Lifestyle Risk Score to Predict Incident AF. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Chieng D, Sugumar H, Segan L, Tan C, Vizi D, Al-Kaisey A, Hawson J, Prabhu S, Voskoboinik A, Morton J, Lee G, Mariani J, Le Gerche A, Kistler P, Kalman J, Kaye D, Ling L. Catheter Ablation in Atrial Fibrillation and Heart Failure With Preserved Ejection Fraction Improves Peak Pulmonary Capillary Wedge Pressure, Exercise Capacity and Quality of Life. A Prospective Randomised Controlled Trial (RCT-STALL HFpEF). Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Segan L, Canovas R, Nanayakkara S, Chieng D, Prabhu S, Ling L, Voskoboinik A, Sugumar H, Lee G, Morton J, Kalman J, Kistler P. Development of an AF Lifestyle Score for Risk Prediction in Incident AF. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kim D, Lee G, Chapman P, Bussiere M, Daartz J, Loeffler J, Shih H. Two-Fraction Proton Beam Stereotactic Radiosurgery for Cerebral Arteriovenous Malformations. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Lee G, Vollmer D, Han X. A Phytocannabinoid Formula Containing Palmitoylethanolamide, Acmella Oleracea Extract, and Bovine Colostrum Filtrate Inhibited Cytokine and Chemokine Production in Human Peripheral Blood Mononuclear Cells Stimulated Ex Vivo. CURR TOP NUTRACEUT R 2021. [DOI: 10.37290/ctnr2641-452x.20:438-446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
A phytocannabinoid formula containing copaiba essential oil, palmitoylethanolamide, Sichuan pepper extract, Acmella oleracea extract, cruciferous vegetable extracts blend, and bovine colostrum filtrate was tested for its ex vivo effect on inhibiting stimulated cytokine release in human peripheral blood mononuclear cells. Effects of the phytocannabinoid formula on the peripheral blood mononuclear cells viability were measured by alamarBlue™ to confirm no obvious cytotoxicity. The phytocannabinoid formula was compared to reference compounds for its ability to inhibit both the phytohemagglutinin-stimulated release of the cytokines from T-cells and the lipopolysaccharide-stimulated release of the cytokines from macrophages/monocytes in human peripheral blood mononuclear cells. The T cell cytokine responses measured were those of interleukins (interleukin-1β, interleukin-2, interleukin-4, interleukin-5, interleukin-6, interleukin-8, interleukin-10, and interleukin-13) and interferon-gamma, interferon gamma-induced protein 10, macrophage inflammatory protein-1α, and tumor necrosis factor-α. The macrophage and monocyte cytokine responses measured were of interleukin-1β, interleukin-6, interleukin-8, macrophage inflammatory protein-1α, and tumor necrosis factor-α. For the phytohemagglutinin-stimulated T cell production of cytokines, the peripheral blood mononuclear cells treated with the Phytocannabinoid formula at 2 μg/mL and 20 μg/mL showed significant inhibition of interleukin-2, interleukin-6, interleukin-5, interleukin-8, interleukin-10, interleukin-13, and interferon gamma-induced protein 10 production. The phytocannabinoid formula also significantly reduced the macrophage/monocyte production of interleukin-1β and interleukin-6. Results from the present study showed that the phytocannabinoid formula inhibited cytokines and chemokines production in ex vivo stimulated human peripheral blood mononuclear cells, suggesting a potential immunomodulatory effect.
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Affiliation(s)
- G. Lee
- 4Life Research USA, LLC, 9850 S 300 W, Sandy, UT 84070 USA
| | - D. Vollmer
- 4Life Research USA, LLC, 9850 S 300 W, Sandy, UT 84070 USA
| | - X. Han
- 4Life Research USA, LLC, 9850 S 300 W, Sandy, UT 84070 USA
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39
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Peng T, Zhuang T, Yan Y, Qian J, Dick GR, Behaghel de Bueren J, Hung SF, Zhang Y, Wang Z, Wicks J, Garcia de Arquer FP, Abed J, Wang N, Sedighian Rasouli A, Lee G, Wang M, He D, Wang Z, Liang Z, Song L, Wang X, Chen B, Ozden A, Lum Y, Leow WR, Luo M, Meira DM, Ip AH, Luterbacher JS, Zhao W, Sargent EH. Ternary Alloys Enable Efficient Production of Methoxylated Chemicals via Selective Electrocatalytic Hydrogenation of Lignin Monomers. J Am Chem Soc 2021; 143:17226-17235. [PMID: 34617746 DOI: 10.1021/jacs.1c08348] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
We explore the selective electrocatalytic hydrogenation of lignin monomers to methoxylated chemicals, of particular interest, when powered by renewable electricity. Prior studies, while advancing the field rapidly, have so far lacked the needed selectivity: when hydrogenating lignin-derived methoxylated monomers to methoxylated cyclohexanes, the desired methoxy group (-OCH3) has also been reduced. The ternary PtRhAu electrocatalysts developed herein selectively hydrogenate lignin monomers to methoxylated cyclohexanes-molecules with uses in pharmaceutics. Using X-ray absorption spectroscopy and in situ Raman spectroscopy, we find that Rh and Au modulate the electronic structure of Pt and that this modulating steers intermediate energetics on the electrocatalyst surface to facilitate the hydrogenation of lignin monomers and suppress C-OCH3 bond cleavage. As a result, PtRhAu electrocatalysts achieve a record 58% faradaic efficiency (FE) toward 2-methoxycyclohexanol from the lignin monomer guaiacol at 200 mA cm-2, representing a 1.9× advance in FE and a 4× increase in partial current density compared to the highest productivity prior reports. We demonstrate an integrated lignin biorefinery where wood-derived lignin monomers are selectively hydrogenated and funneled to methoxylated 2-methoxy-4-propylcyclohexanol using PtRhAu electrocatalysts. This work offers an opportunity for the sustainable electrocatalytic synthesis of methoxylated pharmaceuticals from renewable biomass.
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Affiliation(s)
- Tao Peng
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada.,Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Taotao Zhuang
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada.,Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yu Yan
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada
| | - Jin Qian
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Graham R Dick
- Laboratory of Sustainable and Catalytic Processing, Institute of Chemicals Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, VD CH 1015, Switzerland
| | - Jean Behaghel de Bueren
- Laboratory of Sustainable and Catalytic Processing, Institute of Chemicals Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, VD CH 1015, Switzerland
| | - Sung-Fu Hung
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada
| | - Yun Zhang
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Ziyun Wang
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada
| | - Joshua Wicks
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada
| | - F Pelayo Garcia de Arquer
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada
| | - Jehad Abed
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada
| | - Ning Wang
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada
| | - Armin Sedighian Rasouli
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada
| | - Geonhui Lee
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada
| | - Miao Wang
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Daping He
- Hubei Engineering Research Center of RF-Microwave Technology and Application, School of Science, Wuhan University of Technology, Wuhan, Hubei 430070, China
| | - Zhe Wang
- Hubei Engineering Research Center of RF-Microwave Technology and Application, School of Science, Wuhan University of Technology, Wuhan, Hubei 430070, China
| | - Zhixiu Liang
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Liang Song
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Xue Wang
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada
| | - Bin Chen
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada
| | - Adnan Ozden
- Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, Ontario M5S 3G8, Canada
| | - Yanwei Lum
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada
| | - Wan Ru Leow
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada
| | - Mingchuan Luo
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada
| | - Debora Motta Meira
- CLS@APS sector 20, Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, Illinois 60439, United States.,Canadian Light Source Inc., 44 Innovation Boulevard, Saskatoon, Saskatchewan S7N 2V3, Canada
| | - Alexander H Ip
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada
| | - Jeremy S Luterbacher
- Laboratory of Sustainable and Catalytic Processing, Institute of Chemicals Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, VD CH 1015, Switzerland
| | - Wei Zhao
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Edward H Sargent
- Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada
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40
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Lee G, Clough O, McLean E, Campioni-Norman D. 1552 'The Modified Cappuccini Audit Tool: Patient Safety in the Operating Theatre'. Br J Surg 2021. [DOI: 10.1093/bjs/znab259.910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
Aim
To assess our trust over a period of two weeks with regard to safe supervision of surgical and anaesthetic trainees within the operating theatre using the Cappuccini audit tool.
Method
Between 7th of December 2020 and 18th December 2020 the anaesthetic and surgical team were approached and if there was a trainee present, they were asked a set of questions as follows:
If the supervisor is present in theatre no further action would be taken. If the supervisor was not present the volunteer would attempt to contact the supervisor by the method given by the trainee, and they were asked several questions:
Results
146 trainees were identified during our period. Of these the supervisor was present in 93% of cases. Of those not present 90% were contactable by phone, the other 10% were contactable by the trainee themselves. All trainees were happy to answer the questions was explained and all consultants were happy to be contacted. The average time to attend when not present was 2 minutes and 36 seconds.
Conclusions
We have shown the Cappuccini audit tool to be effective in determining safe supervision and found it in general to be well received within surgery and anaesthetics. We found our trust to have safe supervision in the operating theatre.
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Affiliation(s)
- G Lee
- Imperial College NHS Trust, London, United Kingdom
| | - O Clough
- Imperial College NHS Trust, London, United Kingdom
| | - El McLean
- Imperial College NHS Trust, London, United Kingdom
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Clough O, Lee G, Walker J. 423 Patient Perspective on the Use of the Independent Sector to Maintain Elective NHS Services During the COVID-19 Pandemic. Br J Surg 2021. [PMCID: PMC8524587 DOI: 10.1093/bjs/znab259.459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Introduction
COVID-19 resulted in the suspension of planned treatments for patients worldwide leaving millions suffering the physical and mental effects of delay. Reports indicate that when services have been re-established, patients have been afraid to take up appointments. Hospitals put processes in place to counter this, notably separating emergency and elective patient cohorts. Most notably seen by the co-operation between the NHS and independent private healthcare providers in March 2020 at the height of the pandemic. We undertook a study to ascertain the perceptions of NHS patients who underwent elective treatment at independent ‘cold’ sites during the COVID-19 pandemic.
Method
A cross-sectional study with structured telephone interviews of patients who had planned elective treatments at ‘cold’ independent hospitals between March and September 2020. 1150 patients were identified, and a 20% sample formed a 230 patient study group, with 158 (70%) agreeing to participate.
Results
30% of patients delayed their treatment due to COVID related concerns, with 76% of these only accepting treatment because this was at a ‘cold’ site. 46% of patients perceived treatment at a ‘cold’ site as the most important factor contributing to their safety. 153 patients (97%) supported the paid arrangement between the NHS and the independent sector to provide separate ‘cold’ sites for elective treatments.
Discussion
Safely restarting elective services to allow important planned treatments to take place, as was the pandemic continues, is a priority. Our study indicates that physical separation of patient pathways impacted most on patient confidence, and that the use of ‘cold’ sites is a viable option.
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Affiliation(s)
- O Clough
- Imperial College Healthcare NHS Trust, London, United Kingdom
| | - G Lee
- Imperial College Healthcare NHS Trust, London, United Kingdom
| | - J Walker
- Imperial College Healthcare NHS Trust, London, United Kingdom
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Ahn B, Yoon S, Lee G, Kim H, Jang S, Hwang H. MA14.05 Clinicopathologic and Genomic Significances of the Amount of High-Grade Histologic Components in Lung Adenocarcinoma. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Park J, Park I, Hwang J, Bae W, Lee G, Kim L, Choi Y, Jung H, Kim M, Hong S, Lee H, Yu E, Lee A, Park Y, Chae Y. P21.02 Real-World Concordance Between Tumor Mutational Burden From Blood and Tissue in Lung Cancer and Other Cancers. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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44
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Lim S, Kim DW, Jung J, Lee G, Ryou JH, Kang SU, Lee YH, Shin HJ, Yum S, Yim E, Lee SY, Ahn J. 1365TiP A phase I/II, open-label study of BBT-176, a triple mutation targeting EGFR TKI, in patients with NSCLC who progressed after prior EGFR TKI therapy. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1966] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Choi Y, Bang Y, Park M, Lee G, Shin SY, Kim S. CN7 Prediction of onset timing of breakthrough pain using deep learning model. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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46
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Lee G, Meyer AJ, Kizito S, Katamba A, Davis JL, Armstrong-Hough M. Predictors of evaluation in child contacts of TB patients. Int J Tuberc Lung Dis 2021; 24:847-849. [PMID: 32912391 DOI: 10.5588/ijtld.20.0108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- G Lee
- Department of Infectious Diseases, Children´s Hospital of Philadelphia, Philadelphia, PA, Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT, USA
| | - A J Meyer
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT, USA, Uganda Tuberculosis Implementation Research Consortium, Makerere University, Kampala
| | - S Kizito
- Uganda Tuberculosis Implementation Research Consortium, Makerere University, Kampala
| | - A Katamba
- Uganda Tuberculosis Implementation Research Consortium, Makerere University, Kampala, Clinical Epidemiology and Biostatistics Unit, Department of Medicine, Makerere University College of Health Sciences, Kampala, Uganda
| | - J L Davis
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT, USA, Uganda Tuberculosis Implementation Research Consortium, Makerere University, Kampala, Pulmonary, Critical Care, and Sleep Medicine Section, Yale School of Medicine, New Haven, CT
| | - M Armstrong-Hough
- Uganda Tuberculosis Implementation Research Consortium, Makerere University, Kampala, Department of Social and Behavioral Sciences and Department of Epidemiology, School of Global Public Health, New York University, New York, NY, USA, ,
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47
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Hwang H, Lee G, Jang S. P35.02 Lung Adenocarcinoma with Oncogenic SMARCA4 Mutation: Possible Target of Cancer Immunotherapy. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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48
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Wicks J, Jue ML, Beck VA, Oakdale JS, Dudukovic NA, Clemens AL, Liang S, Ellis ME, Lee G, Baker SE, Duoss EB, Sargent EH. 3D-Printable Fluoropolymer Gas Diffusion Layers for CO 2 Electroreduction. Adv Mater 2021; 33:e2003855. [PMID: 33448061 DOI: 10.1002/adma.202003855] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 09/30/2020] [Indexed: 06/12/2023]
Abstract
The electrosynthesis of value-added multicarbon products from CO2 is a promising strategy to shift chemical production away from fossil fuels. Particularly important is the rational design of gas diffusion electrode (GDE) assemblies to react selectively, at scale, and at high rates. However, the understanding of the gas diffusion layer (GDL) in these assemblies is limited for the CO2 reduction reaction (CO2 RR): particularly important, but incompletely understood, is how the GDL modulates product distributions of catalysts operating in high current density regimes > 300 mA cm-2 . Here, 3D-printable fluoropolymer GDLs with tunable microporosity and structure are reported and probe the effects of permeance, microstructural porosity, macrostructure, and surface morphology. Under a given choice of applied electrochemical potential and electrolyte, a 100× increase in the C2 H4 :CO ratio due to GDL surface morphology design over a homogeneously porous equivalent and a 1.8× increase in the C2 H4 partial current density due to a pyramidal macrostructure are observed. These findings offer routes to improve CO2 RR GDEs as a platform for 3D catalyst design.
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Affiliation(s)
- Joshua Wicks
- Department of Electrical and Computer Engineering, University of Toronto, 35 St. George Street, Toronto, Ontario, M5S 1A4, Canada
| | - Melinda L Jue
- Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA, 94550, USA
| | - Victor A Beck
- Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA, 94550, USA
| | - James S Oakdale
- Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA, 94550, USA
| | - Nikola A Dudukovic
- Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA, 94550, USA
| | - Auston L Clemens
- Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA, 94550, USA
| | - Siwei Liang
- Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA, 94550, USA
| | - Megan E Ellis
- Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA, 94550, USA
| | - Geonhui Lee
- Department of Electrical and Computer Engineering, University of Toronto, 35 St. George Street, Toronto, Ontario, M5S 1A4, Canada
| | - Sarah E Baker
- Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA, 94550, USA
| | - Eric B Duoss
- Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA, 94550, USA
| | - Edward H Sargent
- Department of Electrical and Computer Engineering, University of Toronto, 35 St. George Street, Toronto, Ontario, M5S 1A4, Canada
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Yao J, Soon H, Wong J, Fogarty S, Aggarwal A, Lee G, Kalman J, McLellan A. An Atypical Presentation of Takotsubo Cardiomyopathy Causing Torsades de Pointes. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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50
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Al-kaisey A, Parameswaran R, Anderson R, Hawson J, Chieng D, Sugumar H, Nam M, Tonchev I, Watts T, McLellan A, Kistler P, Lee G, Kalman J. Left and Right Atrial Septal Phase Mapping of Persistent Atrial Fibrillation: Marked Electrical Dissociation and Heterogeneous Activation Patterns. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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