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Rastogi D, Gohil K, Malek KA, Peng C, Tang M, Asa-Awuku A. Toward an Understanding of Uric Acid Particle Dissolution: Surface and Bulk-Driven Water Activity. J Phys Chem A 2024; 128:6254-6263. [PMID: 39041373 DOI: 10.1021/acs.jpca.4c02388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/24/2024]
Abstract
Uric acid particles contribute to kidney stones, and natural processes for the elimination of stones depend on solute-solvent interactions. The process of uric acid dissolution has previously been understood via the lens of solubility; however, for pure and mixed salt solutions, these approaches do not provide a comprehensive picture of nanoscale particle solution thermodynamics. Unlike solubility measurements, water activity measurements provide us with information about the chemical potential responsible for the migration of water molecules driving the dissolution of particles. In this work, we used in situ experimental tools to estimate water activity values for pure uric acid aqueous droplets at different stages of droplet growth. The process of cloud formation, i.e., water condensation on a solute particle resulting in aqueous droplet formation, was leveraged to compare the water affinity for nanosized uric acid particles with a well-studied inorganic salt, sodium chloride. Specifically, we investigated microscopic uric acid particles (nanoparticles <300 nm, amorphous and super micron particles >5 μm, crystalline) and the mechanism of water uptake. The growth of droplet volume (Growth Factor, GF) for uric acid particles is experimentally observed for supermicrometer crystalline particles (>1 μm) at subsaturated humidity conditions (<100% RH). In addition, the water activity of submicrometer-size uric acid particles is estimated under subsaturated and supersaturated humidity conditions. These measurements provide us with information about the volume growth of droplets as water condenses in particles exposed to different humidity conditions. Our observations under subsaturated humidity conditions show that the uric acid particles have limited volume growth (<1% change per volume and <10% change per volume for crystalline and amorphous measurement, respectively). From the experimental data, the affinity of uric acid solute with water as a solvent is quantified in terms of water activity.
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Affiliation(s)
- Dewansh Rastogi
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, Maryland20742, United States
| | - Kanishk Gohil
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, Maryland20742, United States
| | - Kotiba A Malek
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, Maryland20742, United States
| | - Chao Peng
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Mingjin Tang
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Akua Asa-Awuku
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, Maryland20742, United States
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Chen C, Shi Z, Fan X, Du L, Zhou C, Pan D. Combined application of high-throughput sequencing and LC-MS-based lipidomics in the evaluation of microorganisms and lipidomics of restructured ham of different salted substitution. Food Res Int 2023; 174:113596. [PMID: 37986459 DOI: 10.1016/j.foodres.2023.113596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 10/08/2023] [Accepted: 10/13/2023] [Indexed: 11/22/2023]
Abstract
The optimization of processed meats through salt replacement using KCl and k-lactate may reduce the risk of chronic diseases through reduction in dietary sodium. The objective of this study was to investigate the changes and relationships between microbial and lipid metabolism during the fermentation of restructured duck ham with different salt substitutions. Lactobacillus and Staphylococcus were found to be the dominant bacterial species in the 30 % KCl + 70 % NaCl (w/w) and 25 % k-lactate + 75 % NaCl (w/w). The LefSe analysis showed that different biomarkers were present in different ham groups, and the PLS-DA showed that triglycerides (GL) and glycerophospholipids (GP) were the two classes with the highest abundance. Besides, the KEGG pathway analysis revealed that glycerophospholipid metabolism and triglyceride metabolism were also the main metabolic pathways. According to the correlation study, Staphylococcus, Halomonas, and Lactobacillus were mostly linked to the important metabolic pathways in restructured ham. Our findings serve as a foundation for quality assurance and product enhancement for low-salt restructured ham.
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Affiliation(s)
- Chen Chen
- Key Laboratory of Animal Protein Food Deep Processing Technology of Zhejiang Province, Ningbo 315832, China; College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315832, China
| | - Zihang Shi
- Key Laboratory of Animal Protein Food Deep Processing Technology of Zhejiang Province, Ningbo 315832, China; College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315832, China
| | - Xiankang Fan
- Key Laboratory of Animal Protein Food Deep Processing Technology of Zhejiang Province, Ningbo 315832, China; College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315832, China
| | - Lihui Du
- Key Laboratory of Animal Protein Food Deep Processing Technology of Zhejiang Province, Ningbo 315832, China; College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315832, China
| | - Changyu Zhou
- Key Laboratory of Animal Protein Food Deep Processing Technology of Zhejiang Province, Ningbo 315832, China; College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315832, China
| | - Daodong Pan
- Key Laboratory of Animal Protein Food Deep Processing Technology of Zhejiang Province, Ningbo 315832, China; College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315832, China.
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Mukesh S, Mukherjee G, Singh R, Steenbuck N, Demidova C, Joshi P, Sangamwar AT, Wade RC. Comparative analysis of drug-salt-polymer interactions by experiment and molecular simulation improves biopharmaceutical performance. Commun Chem 2023; 6:201. [PMID: 37749228 PMCID: PMC10519957 DOI: 10.1038/s42004-023-01006-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 09/14/2023] [Indexed: 09/27/2023] Open
Abstract
The propensity of poorly water-soluble drugs to aggregate at supersaturation impedes their bioavailability. Supersaturated amorphous drug-salt-polymer systems provide an emergent approach to this problem. However, the effects of polymers on drug-drug interactions in aqueous phase are largely unexplored and it is unclear how to choose an optimal salt-polymer combination for a particular drug. Here, we describe a comparative experimental and computational characterization of amorphous solid dispersions containing the drug celecoxib, and a polymer, polyvinylpyrrolidone vinyl acetate (PVP-VA) or hydroxypropyl methylcellulose acetate succinate, with or without Na+/K+ salts. Classical models for drug-polymer interactions fail to identify the best drug-salt-polymer combination. In contrast, more stable drug-polymer interaction energies computed from molecular dynamics simulations correlate with prolonged stability of supersaturated amorphous drug-salt-polymer systems, along with better dissolution and pharmacokinetic profiles. The celecoxib-salt-PVP-VA formulations exhibit excellent biopharmaceutical performance, offering the prospect of a low-dosage regimen for this widely used anti-inflammatory, thereby increasing cost-effectiveness, and reducing side-effects.
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Affiliation(s)
- Sumit Mukesh
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, Sector-67, Mohali, Punjab, 160062, India
| | - Goutam Mukherjee
- Center for Molecular Biology (ZMBH), DKFZ-ZMBH Alliance, Heidelberg University, Im Neuenheimer Feld 282, 69120, Heidelberg, Germany
- Molecular and Cellular Modeling Group, Heidelberg Institute for Theoretical Studies, Schloss-Wolfsbrunnenweg 35, 69118, Heidelberg, Germany
| | - Ridhima Singh
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, Sector-67, Mohali, Punjab, 160062, India
| | - Nathan Steenbuck
- Molecular and Cellular Modeling Group, Heidelberg Institute for Theoretical Studies, Schloss-Wolfsbrunnenweg 35, 69118, Heidelberg, Germany
- Institute of Pharmacy and Molecular Biotechnology (IPMB), Heidelberg University, Im Neuenheimer Feld 364, 69120, Heidelberg, Germany
| | - Carolina Demidova
- Molecular and Cellular Modeling Group, Heidelberg Institute for Theoretical Studies, Schloss-Wolfsbrunnenweg 35, 69118, Heidelberg, Germany
- Faculty of Chemistry, Heidelberg University, Im Neuenheimer Feld 364, 69120, Heidelberg, Germany
| | - Prachi Joshi
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, Sector-67, Mohali, Punjab, 160062, India
| | - Abhay T Sangamwar
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, Sector-67, Mohali, Punjab, 160062, India.
| | - Rebecca C Wade
- Center for Molecular Biology (ZMBH), DKFZ-ZMBH Alliance, Heidelberg University, Im Neuenheimer Feld 282, 69120, Heidelberg, Germany.
- Molecular and Cellular Modeling Group, Heidelberg Institute for Theoretical Studies, Schloss-Wolfsbrunnenweg 35, 69118, Heidelberg, Germany.
- Interdisciplinary Center for Scientific Computing (IWR), Heidelberg University, Im Neuenheimer Feld 205, Heidelberg, Germany.
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Zhai X, Zhou Y, Song B, Pan W, Wang J. Comparative study on the inhibiting effect of dissolvable tiny-foam extinguishing agent and chlorine salts on coal spontaneous combustion. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:80591-80601. [PMID: 37296254 DOI: 10.1007/s11356-023-27948-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 05/23/2023] [Indexed: 06/12/2023]
Abstract
Coal spontaneous combustion (CSC) is a global disaster and detrimental to the ecological environment. This study aims to better apply environmentally friendly dissolvable tiny-foam extinguisher (DTE) to CSC and look further into the inhibition mechanism. Thermogravimetric analysis and differential scanning calorimetry (TG-DSC) were employed to test the oxidation properties of coal samples treated with DTE, NaCl, MgCl2, and CaCl2 inhibitors, and the reaction mechanisms and kinetic parameters in the high-temperature stage of coal oxidation were determined. The results revealed that the inhibition of the four inhibitors was similar in the initial period of the coal oxidation, DTE increased the cracking temperature of the coal by 37 °C, mass loss was a minimum when reaching the ignition temperature, and inhibition was better than the other inhibitors at the low temperature. DTE had higher thermal stability and played a stable role in suppression at the high temperature, while chlorine salt inhibitors promoted the oxidative exothermic reaction. DTE coal sample absorbed forty times more heat during the endothermic stage than raw coal, ten times more than MgCl2, and released a minimum of heat. In the decomposition and combustion stages, the reaction mechanism of coal and oxygen conformed to the three-dimensional diffusion Z.-L.-T. equation, and the apparent activation energy of the DTE-treated coal sample was about 40 kJ/mol higher than raw coal.
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Affiliation(s)
- Xiaowei Zhai
- School of Safety Science and Engineering, Xi'an University of Science and Technology, 58, Yanta Mid. Rd, Xi'an, 710054, Shaanxi, China.
- Key Laboratory of Coal Fire Disaster Prevention and Control in Shaanxi Province, Xi'an, 710054, Shaanxi, China.
- Mine Emergency Rescue Innovation Team, The Youth Innovation Team of Shaanxi Universities, Shaanxi, China.
| | - Yujie Zhou
- School of Safety Science and Engineering, Xi'an University of Science and Technology, 58, Yanta Mid. Rd, Xi'an, 710054, Shaanxi, China
- Key Laboratory of Coal Fire Disaster Prevention and Control in Shaanxi Province, Xi'an, 710054, Shaanxi, China
- Mine Emergency Rescue Innovation Team, The Youth Innovation Team of Shaanxi Universities, Shaanxi, China
| | - Bobo Song
- School of Safety Science and Engineering, Xi'an University of Science and Technology, 58, Yanta Mid. Rd, Xi'an, 710054, Shaanxi, China
- Key Laboratory of Coal Fire Disaster Prevention and Control in Shaanxi Province, Xi'an, 710054, Shaanxi, China
- Mine Emergency Rescue Innovation Team, The Youth Innovation Team of Shaanxi Universities, Shaanxi, China
| | - Wenjun Pan
- School of Safety Science and Engineering, Xi'an University of Science and Technology, 58, Yanta Mid. Rd, Xi'an, 710054, Shaanxi, China
- Key Laboratory of Coal Fire Disaster Prevention and Control in Shaanxi Province, Xi'an, 710054, Shaanxi, China
- Mine Emergency Rescue Innovation Team, The Youth Innovation Team of Shaanxi Universities, Shaanxi, China
| | - Jiuge Wang
- School of Safety Science and Engineering, Xi'an University of Science and Technology, 58, Yanta Mid. Rd, Xi'an, 710054, Shaanxi, China
- Key Laboratory of Coal Fire Disaster Prevention and Control in Shaanxi Province, Xi'an, 710054, Shaanxi, China
- Mine Emergency Rescue Innovation Team, The Youth Innovation Team of Shaanxi Universities, Shaanxi, China
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Peng C, Chen L, Tang M. A database for deliquescence and efflorescence relative humidities of compounds with atmospheric relevance. FUNDAMENTAL RESEARCH 2022; 2:578-587. [PMID: 38934008 PMCID: PMC11197750 DOI: 10.1016/j.fmre.2021.11.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 10/09/2021] [Accepted: 11/03/2021] [Indexed: 11/21/2022] Open
Abstract
Deliquescence relative humidity (DRH) and efflorescence relative humidity (ERH), the two parameters that regulate phase state and hygroscopicity of substances, play important roles in atmospheric science and many other fields. A large number of experimental studies have measured the DRH and ERH values of compounds with atmospheric relevance, but these values have not yet been summarized in a comprehensive manner. In this work, we develop for the first-of-its-kind a comprehensive database which compiles the DRH and ERH values of 110 compounds (68 inorganics and 42 organics) measured in previous studies, provide the preferred DRH and ERH values at 298 K for these compounds, and discuss the effects of a few key factors (e.g., temperature and particle size) on the measured DRH and ERH values. In addition, we outline future work that will broaden the scope of this database and enhance its accessibility.
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Affiliation(s)
- Chao Peng
- State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environmental Protection and Resources Utilization, and Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
- CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China
| | - Lanxiadi Chen
- State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environmental Protection and Resources Utilization, and Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
- CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mingjin Tang
- State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environmental Protection and Resources Utilization, and Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
- CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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Study on the Dust Content in Dead-End Drifts in the Potash Mines for Various Ventilation Modes. SUSTAINABILITY 2022. [DOI: 10.3390/su14053030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This article deals with the reduction of dust content in the working areas of potash mines in the conditions of operating combines. This problem is topical, since the high dust concentrations in the atmosphere of dead-end drifts lead to the development of occupational diseases among miners, and traditional methods of dust control are often unsuitable for potash salts conditions. We describe the results of experimental studies carried out for the potash mine of the Verkhnekamskoye potassium-magnesium salt deposit. Next, a mathematical model of the dust–air mixture dynamics is formulated and parametrized. The Euler–Euler approach and the model of a homogeneous multicomponent medium are used. The results of a simulation for two ventilation systems (forced and exhaust) are presented. Several options for air flow rates are considered. A conclusion is reached about the most effective parameters of ventilation systems, which allows for minimizing the concentration of dust in the zone of the combine driver.
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Asadzadeh B, Bouzidi H, Bisson R, Ondráček J, Schwarz J, Lahib A, Ždímal V. Hygroscopicity of secondary marine organic aerosols: Mixtures of alkylammonium salts and inorganic components. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 790:148131. [PMID: 34107406 DOI: 10.1016/j.scitotenv.2021.148131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 05/26/2021] [Accepted: 05/26/2021] [Indexed: 06/12/2023]
Abstract
Field studies have identified alkylammonium salts as important components of secondary marine organic aerosols. In this work, we study the hygroscopic behavior of laboratory-generated alkylammonium aerosol particles, including monomethylammonium chloride (MMACl), dimethylammonium chloride (DMACl), trimethylammonium chloride (TMACl), diethylammonium chloride (DEACl), and their mixtures with inorganic salts containing ammonium sulfate (NH4)2SO4, sodium chloride NaCl, calcium nitrate Ca(NO3)2 and sodium sulfate Na2SO4 at different dry mass ratios with a hygroscopicity tandem differential mobility analyzer (HTDMA). The hygroscopic growth of pure alkylammonium salt particles (except for DEACl) reveals gradual water uptake over the whole studied range of relative humidities (RHs). In general, the impact of the presence of alkylammonium chloride on the phase behavior and hygroscopic growth of mixtures depends on the chemical composition of particles and volume fraction of the alkylammonium chloride in the mixtures. For alkylammonium/(NH4)2SO4 mixed particles (except for TMACl/(NH4)2SO4), the hygroscopic growth shows a smooth growth tendency when the organic content is high, while the deliquescence transition is observed for alkylammonium salt/NaCl mixtures at all mass ratios. Regarding the different mixtures of alkylammonium/Ca(NO3)2 particles, continuous water uptake without phase transition is observed over the studied RH range, indicating that alkylammonium salts impose no effect on the liquid-like state of calcium nitrate. The alkylammonium/Na2SO4 mixtures show obvious particle shrinkage prior to the deliquescence point. A similar behavior is also observed for alkylammonium salt/NaCl mixtures. The observed diameter reduction can be attributed to the transformation of porous or irregularly shaped solid particles into more compact near-spherical particles. In the following, measured growth factors (GFs) are compared with values predicted with the Zdanovskii-Stokes-Robinson (ZSR) mixing rule and ideal solution model. The ZSR predictions for different alkylammonium/inorganic mixtures are similar to the measured GFs as long as the mixed particles are in a liquid-like state.
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Affiliation(s)
- Behnaz Asadzadeh
- Department of Aerosols Chemistry and Physics, AS CR, Institute of Chemical Process Fundamentals of the CAS, Prague CZ-16502, Czech Republic
| | - Hichem Bouzidi
- Department of Aerosols Chemistry and Physics, AS CR, Institute of Chemical Process Fundamentals of the CAS, Prague CZ-16502, Czech Republic; IMT Lille Douai, Institut Mines-Télécom, Univ. Lille, Centre for Energy and Environment, 59000 Lille, France.
| | - Robin Bisson
- Polytech Nantes-Département Génie des Procédés et Bioprocédés, Site Universitaire de Gavy-Océanis, Boulevard de l'Université, 44600 Saint Nazaire Cedex, France
| | - Jakub Ondráček
- Department of Aerosols Chemistry and Physics, AS CR, Institute of Chemical Process Fundamentals of the CAS, Prague CZ-16502, Czech Republic
| | - Jaroslav Schwarz
- Department of Aerosols Chemistry and Physics, AS CR, Institute of Chemical Process Fundamentals of the CAS, Prague CZ-16502, Czech Republic
| | - Ahmad Lahib
- IMT Lille Douai, Institut Mines-Télécom, Univ. Lille, Centre for Energy and Environment, 59000 Lille, France
| | - Vladimír Ždímal
- Department of Aerosols Chemistry and Physics, AS CR, Institute of Chemical Process Fundamentals of the CAS, Prague CZ-16502, Czech Republic
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Lv H, Li B, Deng J, Ye L, Gao W, Shu CM, Bi M. SARS-CoV-2 vaccination modelling for safe surgery to save lives: data from an international prospective cohort study. Br J Surg 2021; 108:1056-1063. [PMID: 33761533 DOI: 10.1016/j.energy.2021.121093] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Accepted: 02/12/2021] [Indexed: 05/24/2023]
Abstract
BACKGROUND Preoperative SARS-CoV-2 vaccination could support safer elective surgery. Vaccine numbers are limited so this study aimed to inform their prioritization by modelling. METHODS The primary outcome was the number needed to vaccinate (NNV) to prevent one COVID-19-related death in 1 year. NNVs were based on postoperative SARS-CoV-2 rates and mortality in an international cohort study (surgical patients), and community SARS-CoV-2 incidence and case fatality data (general population). NNV estimates were stratified by age (18-49, 50-69, 70 or more years) and type of surgery. Best- and worst-case scenarios were used to describe uncertainty. RESULTS NNVs were more favourable in surgical patients than the general population. The most favourable NNVs were in patients aged 70 years or more needing cancer surgery (351; best case 196, worst case 816) or non-cancer surgery (733; best case 407, worst case 1664). Both exceeded the NNV in the general population (1840; best case 1196, worst case 3066). NNVs for surgical patients remained favourable at a range of SARS-CoV-2 incidence rates in sensitivity analysis modelling. Globally, prioritizing preoperative vaccination of patients needing elective surgery ahead of the general population could prevent an additional 58 687 (best case 115 007, worst case 20 177) COVID-19-related deaths in 1 year. CONCLUSION As global roll out of SARS-CoV-2 vaccination proceeds, patients needing elective surgery should be prioritized ahead of the general population.
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