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Characterizing objective and self-report habitual physical activity and sedentary time in outpatients with an acquired brain injury

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Sports Medicine and Health Science 2024年第4期6卷 338-343页

作者： Liam P.Pellerine Katerina Miller ryan j.frayne Myles W.O'Brien Division of Kinesiology School of Health and Human PerformanceFaculty of HealthDalhousie UniversityHalifaxNova ScotiaCanada Acquired Brain Injury NeuroCommons Nova Scotia Health AuthorityHalifaxNova ScotiaCanada School of Physiotherapy(Faculty of Health)&Department of Medicine(Faculty of Medicine) Dalhousie UniversityHalifaxNova ScotiaCanada Geriatric Medicine Research Dalhousie University&Nova Scotia HealthHalifaxNova ScotiaCanada Centre de Formation Medicale Du Nouveau-Brunswick New Brunswick&Department of MedicineUniversite de SherbrookeSherbrookeQuebecCanada

Outpatients with an acquired brain injury(ABI)experience physical,mental,and social *** can be classified into two subgroups based on mechanism of injury:mild traumatic brain injury(mTBI;e.g.,concussion)and other ABI(e.g.,stroke,brain aneurysm,encephalitis).Our understanding of habitual activity levels within ABI populations is limited because they are often collected using self-report *** purpose of this study was to,1)describe the habitual activity levels of outpatients with ABI using objective and self-report monitoring,and 2)compare the activity levels of outpatients with mTBI *** *** outpatients with other ABI(mean±standard deviation:[58±13]years,9 females)and 12 outpatients with mTBI([48±11]years,9 females)wore a thigh-worn activPAL 24 h/day(h/day)for *** with ABI averaged(6.0±2.3)h/day of upright time,(10.6±2.2)h/day of sedentary time,(5.6±2.7)h/day in prolonged sedentary bouts>1 h,(5960±3037)steps/day,and(11±13)minutes/day(min/day)of moderate-vigorous physical activity(MVPA).There were no differences between activPAL-derived upright,sedentary,prolonged sedentary time,and physical activity between the mTBI and other ABI groups(all,p>0.31).Outpatients with ABI overestimated their MVPA levels(t138 min/week)and underestimated sedentary time(-4.3 h/day)compared to self-report(all,pjectively exhibit highly inactive and sedentary *** habitual movement behaviours of our sample did not differ by mechanism of injury(i.e.,mTBI versus other ABI).Targeting reductions in objectively measured sedentary time are needed to progressively improve the habitual movement behaviours of outpatients with ABI.

关键词： Accelerometry Stroke Brain aneurysm Encephalitis Mild traumatic brain injury Rehabilitation

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Habitual sedentary time and stationary time are inversely related to aerobic fitness

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Sports Medicine and Health Science 2022年第4期4卷 260-266页

作者： Myles W.O'Brien Madeline E.Shivgulam jennifer L.Petterson Yanlin Wua ryan j.frayne Said Mekari Derek S.Kimmerly Division of Kinesiology School of Health and Human PerformanceFaculty of HealthDalhousie UniversityHalifaxNova ScotiaCanada Department of Family Medicine Universitéde SherbrookeSherbrookeQuebecCanada

A one metabolic-equivalent-of-task increase in peak aerobic fitness(peak MET)is associated with a clinically relevant improvement in survival risk and all-cause *** co-dependent impact of free-living physical behaviours on aerobic fitness are poorly *** purpose of this study was to investigate the impact of theoretically re-allocating time spent in physical behaviours on aerobic *** hypothesized that substituting sedentary time with any physical activity(at any intensity)would be associated with a predicted improvement in aerobic *** volume rate of oxygen uptake(VO_(2)peak)was assessed via indirect calorimetry during a progressive,maximal cycle ergometer protocol in 103 adults(52 females;[38±21]years;[25.0±3.8]kg/m^(2);VO_(2)peak:[35.4±11.5]ml⋅kg^(-1)⋅min^(-1)).Habitual sedentary time,standing time,light-(LPA),moderate-(MPA),and vigorous-physical activity(VPA)were assessed 24-h/day via thigh-worn inclinometry for up to one week(average:[6.3±0.9]days).Isotemporal substitution modelling examined the impact of replacing one physical behaviour with *** time(β=0.8,95%CI:[-1.3,-0.2])and standing time(β=0.9,95%CI:[-1.6,-0.2])were negatively associated with VO_(2)peak,whereas VPA was positively associated with relative VO_(2)peak(β=9.2,95%CI:[0.9,17.6]).Substituting 30-min/day of VPA with any other behaviour was associated with a 2.4–3.4 higher peak *** standing time was associated with a lower aerobic *** little as 10-min/day of VPA predicted a clinically relevant 0.8–1.1 peak MET ***,replacing any time with relatively small amounts of VPA is associated with improvements in aerobic fitness.

关键词： Physical activity intensity Cardiorespiratory fitness Objective activity monitoring Sedentary activity Isotemporal substitution modelling

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Management of gestational diabetes mellitus via nutritional interventions:The relevance of gastric emptying

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World journal of Diabetes 2024年第7期15卷 1394-1397页

作者： Wei-Kun Huang ryan j jalleh Christopher K Rayner Tong-Zhi Wu Adelaide Medical School and Centre of Research Excellence in Translating Nutritional Science to Good Health The University of AdelaideAdelaide 5000Australia Adelaide Medical School and Centre of Research Excellence in Translating Nutritional Science to Good Health The University of Adelaide and Department of Gastroenterology and HepatologyRoyal Adelaide HospitalAdelaide 5000Australia

Gestational diabetes mellitus(GDM)represents one of the most common medical complications of pregnancy and is important to the well-being of both mothers and offspring in the short and long *** intervention remains the mainstay for the management of *** efficacy of nutritional approaches(*** restriction and small frequent meals)to improving the maternal-neonatal outcomes of GDM was attested to by Chinese population data,discussed in two articles in recent issues of this ***,a specific focus on the relevance of postprandial glycaemic control was *** rather than fasting hyperglycaemia often represents the predominant manifestation of disordered glucose homeostasis in Chinese women with *** is now increasing appreciation that the rate of gastric emptying,which controls the delivery of nutrients for digestion and absorption in the small intestine,is a key determinant of postprandial glycaemia in both health,type 1 and 2 *** remains to be established whether gastric emptying is abnormally rapid in GDM,particularly among Chinese women,thus contributing to a predisposition to postprandial hyperglycaemia,and if so,how this influences the therapeutic response to nutritional *** is essential that we understand the role of gastric emptying in the regulation of postprandial glycaemia during pregnancy and the potential for its modulation by nutritional strategies in order to improve postprandial glycaemic control in GDM.

关键词： Gastric emptying Postprandial glycaemia Diet Nutritional interventions Gestational diabetes mellitus

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Machine learning-guided accelerated discovery of structure-property correlations in lean magnesium alloys for biomedical applications

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journal of Magnesium and Alloys 2024年第6期12卷 2267-2283页

作者： Sreenivas Raguraman Maitreyee Sharma Priyadarshini Tram Nguyen ryan McGovern Andrew Kim Adam j.Griebel Paulette Clancy Timothy P.Weihs Department of Materials Science and Engineering Johns Hopkins University3400 N Charles StBaltimore21218MDU.S.A Hopkins Extreme Materials Institute Johns Hopkins University3400 N Charles StBaltimore21218MDU.S.A Department of Chemical and Biomolecular Engineering Johns Hopkins University3400 N Charles StBaltimore21218MDU.S.A Translational Tissue Engineering Center Johns Hopkins School of Medicine400 N BroadwayBaltimore21231MDU.S.A Department of Biomedical Engineering Johns Hopkins University3400 N Charles StBaltimore21218MDU.S.A Research and Development Fort Wayne Metals Research ProductsLLC9609 Ardmore AveFort Wayne46809INU.S.A Department of Mechanical Engineering Johns Hopkins University3400 N Charles StBaltimore21218MDU.S.A

Magnesium alloys are emerging as promising alternatives to traditional orthopedic implant materials thanks to their biodegradability,biocompatibility,and impressive mechanical ***,their rapid in-vivo degradation presents challenges,notably in upholding mechanical integrity over *** study investigates the impact of high-temperature thermal processing on the mechanical and degradation attributes of a lean Mg-Zn-Ca-Mn alloy,*** rapid,cost-efficient characterization methods like X-ray diffraction and optical microscopy,we swiftly examine microstructural changes post-thermal *** Pearson correlation coefficient analysis,we unveil the relationship between microstructural properties and critical targets(properties):hardness and corrosion ***,leveraging the least absolute shrinkage and selection operator(LASSO),we pinpoint the dominant microstructural factors among closely correlated *** findings underscore the significant role of grain size refinement in strengthening and the predominance of the ternary Ca_(2)Mg_(6)Zn_(3)phase in corrosion *** suggests that achieving an optimal blend of strength and corrosion resistance is attainable through fine grains and reduced concentration of ternary *** thorough investigation furnishes valuable insights into the intricate interplay of processing,structure,and properties in magnesium alloys,thereby advancing the development of superior biodegradable implant materials.

关键词： Magnesium alloys Machine learning Corrosion Mechanical properties Rapid characterization

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Interleukin-10 suppresses lipid metabolism-mediated intestinal inflammation

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Life Metabolism 2024年第3期3卷 3-5页

作者： Tristram A.j.ryan Ivan Zanoni Division of Immunology and Division of Gastroenterology Boston Children’s Hospital and Harvard Medical SchoolBostonMA 02115United States

In a recent paper published in Nature,York et *** that the anti-inflammatory cytokine interleukin(IL)-10 regulates sphingolipid metabolism to limit NF-κB-mediated *** of Il10 in mice,or genetic mutation of IL10 in humans,predisposes to inflammatory bowel disease,which may be overcome by restoring homeostatic sphingolipid metabolism.

关键词： metabolism inflammation

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The secondary injury cascade after spinal cord injury:an analysis of local cytokine/chemokine regulation

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Neural Regeneration Research 2024年第6期19卷 1308-1317页

作者： Daniel j.Hellenbrand Charles M.Quinn Zachariah j.Piper ryan T.Elder Raveena R.Mishra Taylor L.Marti Phoebe M.Omuro Rylie M.Roddick jae Sung Lee William L.Murphy Amgad S.Hanna Department of Neurosurgery University of Wisconsin-Madison School of Medicine and Public HealthMadisonWIUSA Department of Biomedical Engineering University of Wisconsin-MadisonMadisonWIUSA Department of Orthopedics and Rehabilitation University of Wisconsin-MadisonMadisonWIUSA Department of Materials Science and Engineering University of Wisconsin-MadisonMadisonWIUSA Forward BIO Institute University of Wisconsin-MadisonMadisonWIUSA

After spinal cord injury,there is an extensive infiltration of immune cells,which exacerbates the injury and leads to further neural ***,a major aim of current research involves targeting the immune response as a treatment for spinal cord *** much research has been performed analyzing the complex inflammatory process following spinal cord injury,there remain major discrepancies within previous literature regarding the timeline of local cytokine *** objectives of this study were to establish an overview of the timeline of cytokine regulation for 2 weeks after spinal cord injury,identify sexual dimorphisms in terms of cytokine levels,and determine local cytokines that significantly change based on the severity of spinal cord *** were inflicted with either a mild contusion,moderate contusion,severe contusion,or complete transection,7 mm of spinal cord centered on the injury was harvested at varying times post-injury,and tissue homogenates were analyzed with a Cytokine/Chemokine 27-Plex *** demonstrated pro-inflammatory cytokines including tumor necrosis factorα,interleukin-1β,and interleukin-6 were all upregulated after spinal cord injury,but returned to uninjured levels within approximately 24 hours post-injury,while chemokines including monocyte chemoattractant protein-1 remained upregulated for days *** contrast,several anti-inflammatory cytokines and growth factors including interleukin-10 and vascular endothelial growth factor were downregulated by 7 days *** spinal cord injury,tissue inhibitor of metalloproteinase-1,which specifically affects astrocytes involved in glial scar development,increased more than all other cytokines tested,reaching 26.9-fold higher than uninjured *** a mild injury,11 cytokines demonstrated sexual dimorphisms;however,after a severe contusion only leptin levels were different between female and male *** conclusion,pro-inflammatory cytokines in

关键词： astrocytes chemokines cytokines inflammation macrophages microglia secondary damage spinal cord injury

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Lipid nanoparticles deliver mRNA to the blood-brain barrier

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Nano Research 2024年第10期17卷 9126-9134页

作者： Yanina Kuzminich Avraham Shakked Randi Calkins Sebastian Rudden Camille jones jessie Doan Bora jang Elisa Schrader Echeverri ryan Zenhausern Liming Lian David Loughrey Hannah E.Peck Rachelle Wiese Dorothy Koveal Philip j.Santangelo james E.Dahlman George C.Woodruff School of Mechanical Engineering Georgia Institute of TechnologyAtlantaGA 30332USA Parker H.Petit Institute for Bioengineering and Biosciences Georgia Institute of TechnologyAtlantaGA 30332USA Wallace H.Coulter Department of Biomedical Engineering Emory University School of Medicine and Georgia Institute of TechnologyAtlantaGA 30332USA

Lipid nanoparticles(LNPs)have delivered RNA to hepatocytes in patients after intravenous *** clinical data support efforts to design LNPs that transfect cells in the central nervous system(CNS).However,delivery to the CNS has been difficult,in large part because quantifying on-target delivery alongside common off-target cell types in adult mice remains *** we report methods to isolate different cell types from the CNS,and subsequently present mRNA delivery readouts using a liver-detargeted *** data suggest that LNPs without targeting ligands can transfect cerebral endothelial cells in mice after intravenous *** the difficulty of crossing the blood-brain barrier,they also underscore the value of quantifying delivery in the CNS with cell-type resolution instead of whole-tissue resolution.

关键词： lipid nanoparticle mRNA nanomedicine central nervous system blood-brain barrier

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Surgical or medical treatment of obesity-associated type 2 diabetesan increasing clinical conundrum

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World journal of Diabetes 2024年第10期15卷 2036-2040页

作者： ryan j jalleh Karen L jones Md Shahidul Islam Lu Cai Michael Horowitz Adelaide Medical School and Centre of Research Excellence in Translating Nutritional Science to Good Health University of Adelaide Endocrine and Metabolic Unit Royal Adelaide HospitalAdelaide 5000South AustraliaAustralia Department of Biochemistry School of Life SciencesUniversity of KwaZulu-NatalDurban 4000KwaZulu-NatalSouth Africa Pediatric Research Institute Departments of PediatricsRadiation OncologyPharmacology and ToxicologyUniversity of LouisvilleWendy Novak Diabetes InstituteNorton Children’s HospitalLouisvilleKY 40202United States

In this editorial,we comment on the article by He et al,specifically in relation to the efficacy of bariatric surgery vs glucagon-like peptide-1 receptor agonist(GLP-1RA)therapy in the management of type 2 diabetes(T2D)associated with *** surgery has now also been shown to be safe and effective in pre-teens and teenagers with obesity and T2D,but information on newer GLP-1RAs in these groups is predictably *** older individuals(age>65 years),both bariatric surgery and GLP-1RA therapy improve cardiovascular ***-tric surgery is not infrequently associated with post-operative postprandial hypoglycemia,which is not the case with GLP-1RAs and,paradoxically,there is evidence that GLP-1RAs may reduce both the frequency and severity of postprandial *** trials of the long-term efficacy of bariatric surgery and GLP-1RAs are indicated.

关键词： Glucagon-like peptide-1 Glucagon-like peptide-1 receptor agonist Obesity Diabetes Weight loss Bariatric surgery Metabolic surgery Hypoglycemia

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Metabolic syndrome and the urinary microbiome of patients undergoing percutaneous nephrolithotomy

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Asian journal of Urology 2024年第2期11卷 316-323页

作者： ryan A.Dornbier Chirag P.Doshi Shalin C.Desai Petar Bajic Michelle Van Kuiken Mark Khemmani Ahmer V.Farooq Larissa Bresler Thomas M.T.Turk Alan j.Wolfe Kristin G.Baldea Loyola University Medical Center Department of UrologyMaywoodILUSA Loyola University Chicago Department of Microbiology and ImmunologyMaywoodILUSA

Objective:To identify possible stone-promoting microbes,we compared the profiles of microbes grown from stones of patients with and without metabolic syndrome(MetS).The association between MetS and urinary stone disease is well established,but the exact pathophysiologic relationship remains *** evidence suggests urinary tract dysbiosis may lead to increased nephrolithiasis ***:At the time of percutaneous nephrolithotomy,bladder urine and stone fragments were collected from patients with and without *** sample types were subjected to expanded quantitative urine culture(EQUC)and 16 S ribosomal RNA gene ***:Fifty-seven patients included 12 controls(21.1%)and 45 MetS patients(78.9%).Both cohorts were similar with respect to demographics and non-MetS *** controls had uric acid stone *** EQUC,bacteria were detected more frequently in MetS stones(42.2%)compared to controls(8.3%)(p=0.041).Bacteria also were more abundant in stones of MetS patients compared to *** validate our EQUC results,we performed 16 S ribosomal RNA gene *** 12/16(75.0%)sequence-positive stones,EQUC reliably isolated at least one species of the sequenced *** were detected in both“infectious”and“non-infectious”stone ***:Bacteria are more common and more abundant in MetS stones than control *** findings support a role for bacteria in urinary stone disease for patients with MetS regardless of stone composition.

关键词： Nephrolithiasis Urolithiasis Metabolic syndrome Urinary microbiome Percutaneous nephrolithotomy

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Exploring a targeted approach for public health capacity restrictions during COVID-19 using a new computational model

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Infectious Disease Modelling 2024年第1期9卷 234-244页

作者： Ashley N.Micuda Mark R.Anderson Irina Babayan Erin Bolger Logan Cantin Gillian Groth Ry Pressman-Cyna Charlotte Z.Reed Noah j.Rowe Mehdi Shafiee Benjamin Tam Marie C.Vidal Tianai Ye ryan D.Martin Department of Physics Engineering Physics&AstronomyQueen's UniversityKingstonONCanada Department of Medical Biophysics Western UniversityLondonONCanada Department of Mathematics and Statistics Queen's UniversityKingstonONCanada Department of Biology Queen's UniversityKingstonONCanada Department of Electrical and Computer Engineering Nazarbayev UniversityNur-SultanKazakhstan Energetic Cosmos Laboratory Nazarbayev UniversityNur-SultanKazakhstan School of Computing Queen's UniversityKingstonONCanada Department of Biomedical and Molecular Sciences Queen's UniversityKingstonONCanada Department of Physics University of OxfordOxfordUnited Kingdom Department of Physics Stanford UniversityStanfordCAUnited States

This work introduces the Queen's University Agent-Based Outbreak Outcome Model(QUABOOM).This tool is an agent-based Monte Carlo simulation for modelling epidemics and informing public health *** illustrate the use of the model by examining capacity restrictions during a *** find that public health measures should focus on the few locations where many people interact,such as grocery stores,rather than the many locations where few people interact,such as small *** also discuss a case where the results of the simulation can be scaled to larger population sizes,thereby improving computational efficiency.

关键词： Monte-carlo Agent-based epidemic modelling COVID-19 Small business capacity restrictions Public health Basic reproductive number

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