713 results on '"Bryan, Williams"'
Search Results
2. In remembrance: the life and legacy of George L. Bakris (1952–2024)
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Pantelis Sarafidis, Kostas Tsioufis, Michel Burnier, Bryan Williams, Giuseppe Mancia, Thomas Weber, and George S. Stergiou
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Hypertension ,nephrology ,drug development ,clinical trials ,teacher ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
George L. Bakris passed away on 15 June 2024 at the age of 72 years. This obituary aims at honouring his life and career by describing the stages in his personal and professional pathway, presenting some of his many remarkable accomplishments, and highlighting his exceptional clinical skills, mentorship, and friendship.
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- 2024
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3. Phenogrouping heart failure with preserved or mildly reduced ejection fraction using electronic health record data
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Fardad Soltani, David A. Jenkins, Amit Kaura, Joshua Bradley, Nicholas Black, John P. Farrant, Simon G. Williams, Abdulrahim Mulla, Benjamin Glampson, Jim Davies, Dimitri Papadimitriou, Kerrie Woods, Anoop D. Shah, Mark R. Thursz, Bryan Williams, Folkert W. Asselbergs, Erik K. Mayer, Christopher Herbert, Stuart Grant, Nick Curzen, Iain Squire, Thomas Johnson, Kevin O’Gallagher, Ajay M. Shah, Divaka Perera, Rajesh Kharbanda, Riyaz S. Patel, Keith M. Channon, Richard Lee, Niels Peek, Jamil Mayet, and Christopher A. Miller
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Heart failure with preserved or mildly reduced ejection fraction ,Machine learning ,Electronic health records ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Abstract Background Heart failure (HF) with preserved or mildly reduced ejection fraction includes a heterogenous group of patients. Reclassification into distinct phenogroups to enable targeted interventions is a priority. This study aimed to identify distinct phenogroups, and compare phenogroup characteristics and outcomes, from electronic health record data. Methods 2,187 patients admitted to five UK hospitals with a diagnosis of HF and a left ventricular ejection fraction ≥ 40% were identified from the NIHR Health Informatics Collaborative database. Partition-based, model-based, and density-based machine learning clustering techniques were applied. Cox Proportional Hazards and Fine-Gray competing risks models were used to compare outcomes (all-cause mortality and hospitalisation for HF) across phenogroups. Results Three phenogroups were identified: (1) Younger, predominantly female patients with high prevalence of cardiometabolic and coronary disease; (2) More frail patients, with higher rates of lung disease and atrial fibrillation; (3) Patients characterised by systemic inflammation and high rates of diabetes and renal dysfunction. Survival profiles were distinct, with an increasing risk of all-cause mortality from phenogroups 1 to 3 (p
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- 2024
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4. Prognostic significance of troponin in patients with malignancy (NIHR Health Informatics Collaborative TROP-MALIGNANCY study)
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Nathan A. Samuel, Alistair Roddick, Ben Glampson, Abdulrahim Mulla, Jim Davies, Dimitri Papadimitriou, Vasileios Panoulas, Erik Mayer, Kerrie Woods, Anoop D. Shah, Sanjay Gautama, Paul Elliott, Harry Hemmingway, Bryan Williams, Folkert W. Asselbergs, Narbeh Melikian, Rajesh Kharbanda, Ajay M. Shah, Divaka Perera, Riyaz S. Patel, Keith M. Channon, Jamil Mayet, Anoop S. V. Shah, and Amit Kaura
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Troponin ,Malignancy ,Cancer ,Cardio-oncology ,Mortality ,Biomarkers ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Background Cardiac troponin is commonly raised in patients presenting with malignancy. The prognostic significance of raised troponin in these patients is unclear. Objectives We sought to investigate the relation between troponin and mortality in a large, well characterised cohort of patients with a routinely measured troponin and a primary diagnosis of malignancy. Methods We used the National Institute for Health Research (NIHR) Health Informatics Collaborative data of 5571 patients, who had troponin levels measured at 5 UK cardiac centres between 2010 and 2017 and had a primary diagnosis of malignancy. Patients were classified into solid tumour or haematological malignancy subgroups. Peak troponin levels were standardised as a multiple of each laboratory’s 99th -percentile upper limit of normal (xULN). Results 4649 patients were diagnosed with solid tumours and 922 patients with haematological malignancies. Raised troponin was an independent predictor of mortality in all patients (Troponin > 10 vs.
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- 2024
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5. Association between kidney function, frailty and receipt of invasive management after acute coronary syndrome
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Richard Lee, Yoav Ben-Shlomo, Stuart W Grant, Jim Davies, Jamil Mayet, Nick Curzen, Erik K Mayer, Amit Kaura, Ben Glampson, Abdulrahim Mulla, Kerrie Woods, Keith Channon, Bryan Williams, Divaka Perera, Ajay Shah, Rajesh Kharbanda, Folkert W Asselbergs, Riyaz S Patel, Fergus John Caskey, Lucy Ellen Selman, Thomas Johnson, Iain Squire, Kevin O'Gallagher, Pippa Bailey, Christopher Herbert, Jemima Kate Scott, and Dimitri Papdimitriou
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Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background Reduced estimated glomerular filtration rate (eGFR) is associated with lower use of invasive management and increased mortality after acute coronary syndrome (ACS). The reasons for this are unclear.Methods A retrospective clinical cohort study was performed using data from the English National Institute for Health Research Health Informatics Collaborative (2010–2017). Multivariable logistic regression was used to investigate whether eGFR
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- 2024
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6. Anti-inflammatory therapy with nebulized dornase alfa for severe COVID-19 pneumonia: a randomized unblinded trial
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Joanna C Porter, Jamie Inshaw, Vincente Joel Solis, Emma Denneny, Rebecca Evans, Mia I Temkin, Nathalia De Vasconcelos, Iker Valle Aramburu, Dennis Hoving, Donna Basire, Tracey Crissell, Jesusa Guinto, Alison Webb, Hanif Esmail, Victoria Johnston, Anna Last, Thomas Rampling, Lena Lippert, Elisa Theresa Helbig, Florian Kurth, Bryan Williams, Aiden Flynn, Pauline T Lukey, Veronique Birault, and Venizelos Papayannopoulos
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COVID-19 ,dornase alfa ,DNase ,NETs ,histone ,DNA ,Medicine ,Science ,Biology (General) ,QH301-705.5 - Abstract
Background: Prinflammatory extracellular chromatin from neutrophil extracellular traps (NETs) and other cellular sources is found in COVID-19 patients and may promote pathology. We determined whether pulmonary administration of the endonuclease dornase alfa reduced systemic inflammation by clearing extracellular chromatin. Methods: Eligible patients were randomized (3:1) to the best available care including dexamethasone (R-BAC) or to BAC with twice-daily nebulized dornase alfa (R-BAC + DA) for seven days or until discharge. A 2:1 ratio of matched contemporary controls (CC-BAC) provided additional comparators. The primary endpoint was the improvement in C-reactive protein (CRP) over time, analyzed using a repeated-measures mixed model, adjusted for baseline factors. Results: We recruited 39 evaluable participants: 30 randomized to dornase alfa (R-BAC +DA), 9 randomized to BAC (R-BAC), and included 60 CC-BAC participants. Dornase alfa was well tolerated and reduced CRP by 33% compared to the combined BAC groups (T-BAC). Least squares (LS) mean post-dexamethasone CRP fell from 101.9 mg/L to 23.23 mg/L in R-BAC +DA participants versus a 99.5 mg/L to 34.82 mg/L reduction in the T-BAC group at 7 days; p=0.01. The anti-inflammatory effect of dornase alfa was further confirmed with subgroup and sensitivity analyses on randomised participants only, mitigating potential biases associated with the use of CC-BAC participants. Dornase alfa increased live discharge rates by 63% (HR 1.63, 95% CI 1.01–2.61, p=0.03), increased lymphocyte counts (LS mean: 1.08 vs 0.87, p=0.02) and reduced circulating cf-DNA and the coagulopathy marker D-dimer (LS mean: 570.78 vs 1656.96 μg/mL, p=0.004). Conclusions: Dornase alfa reduces pathogenic inflammation in COVID-19 pneumonia, demonstrating the benefit of cost-effective therapies that target extracellular chromatin. Funding: LifeArc, Breathing Matters, The Francis Crick Institute (CRUK, Medical Research Council, Wellcome Trust). Clinical trial number: NCT04359654.
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- 2024
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7. Resource efficient aortic distensibility calculation by end to end spatiotemporal learning of aortic lumen from multicentre multivendor multidisease CMR images
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Tuan Aqeel Bohoran, Kelly S. Parke, Matthew P. M. Graham-Brown, Mitul Meisuria, Anvesha Singh, Joanne Wormleighton, David Adlam, Deepa Gopalan, Melanie J. Davies, Bryan Williams, Morris Brown, Gerry P. McCann, and Archontis Giannakidis
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Medicine ,Science - Abstract
Abstract Aortic distensibility (AD) is important for the prognosis of multiple cardiovascular diseases. We propose a novel resource-efficient deep learning (DL) model, inspired by the bi-directional ConvLSTM U-Net with densely connected convolutions, to perform end-to-end hierarchical learning of the aorta from cine cardiovascular MRI towards streamlining AD quantification. Unlike current DL aortic segmentation approaches, our pipeline: (i) performs simultaneous spatio-temporal learning of the video input, (ii) combines the feature maps from the encoder and decoder using non-linear functions, and (iii) takes into account the high class imbalance. By using multi-centre multi-vendor data from a highly heterogeneous patient cohort, we demonstrate that the proposed method outperforms the state-of-the-art method in terms of accuracy and at the same time it consumes $$\sim$$ ∼ 3.9 times less fuel and generates $$\sim$$ ∼ 2.8 less carbon emissions. Our model could provide a valuable tool for exploring genome-wide associations of the AD with the cognitive performance in large-scale biomedical databases. By making energy usage and carbon emissions explicit, the presented work aligns with efforts to keep DL’s energy requirements and carbon cost in check. The improved resource efficiency of our pipeline might open up the more systematic DL-powered evaluation of the MRI-derived aortic stiffness.
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- 2023
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8. Changes in the investigation and management of suspected myocardial infarction and injury during COVID-19: a multi-centre study using routinely collected healthcare data
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Lara Chammas, Kevin Yuan, Stephanie Little, Gail Roadknight, Kinga A. Varnai, Shing Chan Chang, Shirley Sze, Jim Davies, Andrew Tsui, Hizni Salih, Ben Glampson, Dimitri Papadimitriou, Abdulrahim Mulla, Kerrie Woods, Kevin O’Gallagher, Anoop D. Shah, Bryan Williams, Folkert W. Asselbergs, Erik Mayer, Richard Lee, Christopher Herbert, Tom Johnson, Stuart Grant, Nick Curzen, Ajay M. Shah, Divaka Perera, Riyaz S. Patel, Keith M. Channon, Amit Kaura, Jamil Mayet, David W. Eyre, Iain Squire, Raj Kharbanda, Andrew Lewis, and Rohan S. Wijesurendra
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troponin ,COVID-19 ,emergency department ,myocardial infarction ,myocardial injury ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
ObjectiveThe COVID-19 pandemic was associated with a reduction in the incidence of myocardial infarction (MI) diagnosis, in part because patients were less likely to present to hospital. Whether changes in clinical decision making with respect to the investigation and management of patients with suspected MI also contributed to this phenomenon is unknown.MethodsMulticentre retrospective cohort study in three UK centres contributing data to the National Institute for Health Research Health Informatics Collaborative. Patients presenting to the Emergency Department (ED) of these centres between 1st January 2020 and 1st September 2020 were included. Three time epochs within this period were defined based on the course of the first wave of the COVID-19 pandemic: pre-pandemic (epoch 1), lockdown (epoch 2), post-lockdown (epoch 3).ResultsDuring the study period, 10,670 unique patients attended the ED with chest pain or dyspnoea, of whom 6,928 were admitted. Despite fewer total ED attendances in epoch 2, patient presentations with dyspnoea were increased (p
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- 2024
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9. COVID-19 in non-hospitalised adults caused by either SARS-CoV-2 sub-variants Omicron BA.1, BA.2, BA.4/5 or Delta associates with similar illness duration, symptom severity and viral kinetics, irrespective of vaccination history.
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Hermaleigh Townsley, Joshua Gahir, Timothy W Russell, David Greenwood, Edward J Carr, Matala Dyke, Lorin Adams, Murad Miah, Bobbi Clayton, Callie Smith, Mauro Miranda, Harriet V Mears, Chris Bailey, James R M Black, Ashley S Fowler, Margaret Crawford, Katalin Wilkinson, Matthew Hutchinson, Ruth Harvey, Nicola O'Reilly, Gavin Kelly, Robert Goldstone, Rupert Beale, Padmasayee Papineni, Tumena Corrah, Richard Gilson, Simon Caidan, Jerome Nicod, Steve Gamblin, George Kassiotis, Vincenzo Libri, Bryan Williams, Sonia Gandhi, Adam J Kucharski, Charles Swanton, David L V Bauer, and Emma C Wall
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Medicine ,Science - Abstract
BackgroundSARS-CoV-2 variant Omicron rapidly evolved over 2022, causing three waves of infection due to sub-variants BA.1, BA.2 and BA.4/5. We sought to characterise symptoms and viral loads over the course of COVID-19 infection with these sub-variants in otherwise-healthy, vaccinated, non-hospitalised adults, and compared data to infections with the preceding Delta variant of concern (VOC).MethodsIn a prospective, observational cohort study, healthy vaccinated UK adults who reported a positive polymerase chain reaction (PCR) or lateral flow test, self-swabbed on alternate weekdays until day 10. We compared participant-reported symptoms and viral load trajectories between infections caused by VOCs Delta and Omicron (sub-variants BA.1, BA.2 or BA.4/5), and tested for relationships between vaccine dose, symptoms and PCR cycle threshold (Ct) as a proxy for viral load using Chi-squared (χ2) and Wilcoxon tests.Results563 infection episodes were reported among 491 participants. Across infection episodes, there was little variation in symptom burden (4 [IQR 3-5] symptoms) and duration (8 [IQR 6-11] days). Whilst symptom profiles differed among infections caused by Delta compared to Omicron sub-variants, symptom profiles were similar between Omicron sub-variants. Anosmia was reported more frequently in Delta infections after 2 doses compared with Omicron sub-variant infections after 3 doses, for example: 42% (25/60) of participants with Delta infection compared to 9% (6/67) with Omicron BA.4/5 (χ2 P < 0.001; OR 7.3 [95% CI 2.7-19.4]). Fever was less common with Delta (20/60 participants; 33%) than Omicron BA.4/5 (39/67; 58%; χ2 P = 0.008; OR 0.4 [CI 0.2-0.7]). Amongst infections with an Omicron sub-variants, symptoms of coryza, fatigue, cough and myalgia predominated. Viral load trajectories and peaks did not differ between Delta, and Omicron, irrespective of symptom severity (including asymptomatic participants), VOC or vaccination status. PCR Ct values were negatively associated with time since vaccination in participants infected with BA.1 (β = -0.05 (CI -0.10-0.01); P = 0.031); however, this trend was not observed in BA.2 or BA.4/5 infections.ConclusionOur study emphasises both the changing symptom profile of COVID-19 infections in the Omicron era, and ongoing transmission risk of Omicron sub-variants in vaccinated adults.Trial registrationNCT04750356.
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- 2024
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10. Combined analyses of within-host SARS-CoV-2 viral kinetics and information on past exposures to the virus in a human cohort identifies intrinsic differences of Omicron and Delta variants.
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Timothy W Russell, Hermaleigh Townsley, Sam Abbott, Joel Hellewell, Edward J Carr, Lloyd A C Chapman, Rachael Pung, Billy J Quilty, David Hodgson, Ashley S Fowler, Lorin Adams, Chris Bailey, Harriet V Mears, Ruth Harvey, Bobbi Clayton, Nicola O'Reilly, Yenting Ngai, Jerome Nicod, Steve Gamblin, Bryan Williams, Sonia Gandhi, Charles Swanton, Rupert Beale, David L V Bauer, Emma C Wall, and Adam J Kucharski
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Biology (General) ,QH301-705.5 - Abstract
The emergence of successive Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) variants of concern (VOCs) during 2020 to 2022, each exhibiting increased epidemic growth relative to earlier circulating variants, has created a need to understand the drivers of such growth. However, both pathogen biology and changing host characteristics-such as varying levels of immunity-can combine to influence replication and transmission of SARS-CoV-2 within and between hosts. Disentangling the role of variant and host in individual-level viral shedding of VOCs is essential to inform Coronavirus Disease 2019 (COVID-19) planning and response and interpret past epidemic trends. Using data from a prospective observational cohort study of healthy adult volunteers undergoing weekly occupational health PCR screening, we developed a Bayesian hierarchical model to reconstruct individual-level viral kinetics and estimate how different factors shaped viral dynamics, measured by PCR cycle threshold (Ct) values over time. Jointly accounting for both interindividual variation in Ct values and complex host characteristics-such as vaccination status, exposure history, and age-we found that age and number of prior exposures had a strong influence on peak viral replication. Older individuals and those who had at least 5 prior antigen exposures to vaccination and/or infection typically had much lower levels of shedding. Moreover, we found evidence of a correlation between the speed of early shedding and duration of incubation period when comparing different VOCs and age groups. Our findings illustrate the value of linking information on participant characteristics, symptom profile and infecting variant with prospective PCR sampling, and the importance of accounting for increasingly complex population exposure landscapes when analysing the viral kinetics of VOCs. Trial Registration: The Legacy study is a prospective observational cohort study of healthy adult volunteers undergoing weekly occupational health PCR screening for SARS-CoV-2 at University College London Hospitals or at the Francis Crick Institute (NCT04750356) (22,23). The Legacy study was approved by London Camden and Kings Cross Health Research Authority Research and Ethics committee (IRAS number 286469). The Legacy study was approved by London Camden and Kings Cross Health Research Authority Research and Ethics committee (IRAS number 286469) and is sponsored by University College London Hospitals. Written consent was given by all participants.
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- 2024
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11. Advancing the digital and computational capabilities of healthcare providers: A qualitative study of a hospital organisation in the NHS
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John Gardner, Daniel Herron, Nick McNally, and Bryan Williams
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Computer applications to medicine. Medical informatics ,R858-859.7 - Abstract
Objective Healthcare systems require transformation to meet societal challenges and projected health demands. Digital and computational tools and approaches are fundamental to this transformation, and hospitals have a key role to play in their development and implementation. This paper reports on a study with the objective of exploring the challenges encountered by hospital leaders and innovators as they implement a strategy to become a data-driven hospital organisation. In doing so, this paper provides guidance to future leaders and innovators seeking to build computational and digital capabilities in complex clinical settings. Methods Interviews were undertaken with 42 participants associated with a large public hospital organisation within England's National Health Service. Using the concept of institutional readiness as an analytical framework , the paper explores participants’ perspectives on the organisation's capacity to support the development of, and benefit from, digital and computational approaches. Results Participants’ accounts reveal a range of specific institutional readiness criteria relating to organisational vision, technical capability, organisational agility, and talent and skills that, when met, enhance the organisations’ capacity to support the development and implementation of digital and computational tools. Participant accounts also reveal challenges relating to these criteria, such as unrealistic expectations and the necessary prioritisation of clinical work in resource-constrained settings. Conclusions The paper identifies a general set of institutional readiness criteria that can guide future hospital leaders and innovators aiming to improve their organisation's digital and computational capability. The paper also illustrates the challenges of pursuing digital and computational innovation in resource-constrained hospital environments.
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- 2023
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12. The HEARTS partner forum—supporting implementation of HEARTS to treat and control hypertension
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Taskeen Khan, Andrew E. Moran, Pablo Perel, Paul K. Whelton, Michael Brainin, Valery Feigin, Deliana Kostova, Patricia Richter, Pedro Ordunez, Anselm Hennis, Daniel T. Lackland, Slim Slama, Daniel Pineiro, Sheila Martins, Bryan Williams, Leonard Hofstra, Renu Garg, and Bente Mikkelsen
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hypertension ,global health ,cardiovascular diseases ,partnerships ,implementation ,primary healthcare ,Public aspects of medicine ,RA1-1270 - Abstract
Cardiovascular diseases (CVD), principally ischemic heart disease (IHD) and stroke, are the leading causes of death (18. 6 million deaths annually) and disability (393 million disability-adjusted life-years lost annually), worldwide. High blood pressure is the most important preventable risk factor for CVD and deaths, worldwide (10.8 million deaths annually). In 2016, the World Health Organization (WHO) and the United States Centers for Disease Control (CDC) launched the Global Hearts initiative to support governments in their quest to prevent and control CVD. HEARTS is the core technical package of the initiative and takes a public health approach to treating hypertension and other CVD risk factors at the primary health care level. The HEARTS Partner Forum, led by WHO, brings together the following 11 partner organizations: American Heart Association (AHA), Center for Chronic Disease Control (CCDC), International Society of Hypertension (ISH), International Society of Nephrology (ISN), Pan American Health Organization (PAHO), Resolve to Save Lives (RTSL), US CDC, World Hypertension League (WHL), World Heart Federation (WHF) and World Stroke Organization (WSO). The partners support countries in their implementation of the HEARTS technical package in various ways, including providing technical expertise, catalytic funding, capacity building and evidence generation and dissemination. HEARTS has demonstrated the feasibility and acceptability of a public health approach, with more than seven million people already on treatment for hypertension using a simple, algorithmic HEARTS approach. Additionally, HEARTS has demonstrated the feasibility of using hypertension as a pathfinder to universal health coverage and should be a key intervention of all basic benefit packages. The partner forum continues to find ways to expand support and reinvigorate enthusiasm and attention on preventing CVD. Proposed future HEARTS Partner Forum activities are related to more concrete information sharing between partners and among countries, expanded areas of partner synergy, support for implementation, capacity building, and advocacy with country ministries of health, professional societies, academy and civil societies organizations. Advancing toward the shared goals of the HEARTS partners will require a more formal, structured approach to the forum and include goals, targets and published reports. In this way, the HEARTS Partner Forum will mirror successful global partnerships on communicable diseases and assist countries in reducing CVD mortality and achieving global sustainable development goals (SDGs).
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- 2023
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13. Rationale for a New Low-Dose Triple Single Pill Combination for the Treatment of Hypertension
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Anthony Rodgers, Abdul Salam, William Cushman, Asita de Silva, Gian Luca Di Tanna, Sonali R. Gnanenthiran, Diederick Grobbee, Krzysztof Narkiewicz, Dike Ojji, Suzanne Oparil, Neil Poulter, Markus P. Schlaich, Aletta E. Schutte, Wilko Spiering, Bryan Williams, Jackson T. Wright, and Paul Whelton
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hypertension ,polypill ,blood pressure ,single pill combination ,fixed dose ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 ,Public aspects of medicine ,RA1-1270 - Abstract
Two recent large trials showed the potential of single pill combinations (SPCs) with ≥3 low-dose components among people with hypertension who were untreated or receiving monotherapy. In both trials, these ‘hypertension polypills’ were superior to usual care, achieving >80% BP control without increasing withdrawal due to side effects. However, there are no such products available for prescribers. To address this unmet need, George Medicines developed GMRx2 with telmisartan/amlodipine/indapamide in three strengths (mg): 10/1.25/0.625, 20/2.5/1.25; 40/5/2.5. Two pivotal trials are ongoing to support FDA submission for the treatment of hypertension, including initial treatment. These assess efficacy and safety of GMRx2 compared to: placebo, and each of the three possible dual combinations. Regulatory submissions are planned for 2024, with the aim of providing access to GMRx2 in developed and developing regions. Wider implementation of GMRx2-based treatment strategies will be guided by further research to inform access and appropriate scale up.
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- 2024
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14. Virology under the Microscope—a Call for Rational Discourse
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Felicia Goodrum, Anice C. Lowen, Seema Lakdawala, James Alwine, Arturo Casadevall, Michael J. Imperiale, Walter Atwood, Daphne Avgousti, Joel Baines, Bruce Banfield, Lawrence Banks, Sumita Bhaduri-McIntosh, Deepta Bhattacharya, Daniel Blanco-Melo, David Bloom, Adrianus Boon, Steeve Boulant, Curtis Brandt, Andrew Broadbent, Christopher Brooke, Craig Cameron, Samuel Campos, Patrizia Caposio, Gary Chan, Anna Cliffe, John Coffin, Kathleen Collins, Blossom Damania, Matthew Daugherty, Kari Debbink, James DeCaprio, Terence Dermody, Jimmy Dikeakos, Daniel DiMaio, Rhoel Dinglasan, W. Paul Duprex, Rebecca Dutch, Nels Elde, Michael Emerman, Lynn Enquist, Bentley Fane, Ana Fernandez-Sesma, Michelle Flenniken, Lori Frappier, Matthew Frieman, Klaus Frueh, Michaela Gack, Marta Gaglia, Tom Gallagher, Denise Galloway, Adolfo García-Sastre, Adam Geballe, Britt Glaunsinger, Stephen Goff, Alexander Greninger, Meaghan Hancock, Eva Harris, Nicholas Heaton, Mark Heise, Ekaterina Heldwein, Brenda Hogue, Stacy Horner, Edward Hutchinson, Joseph Hyser, William Jackson, Robert Kalejta, Jeremy Kamil, Stephanie Karst, Frank Kirchhoff, David Knipe, Timothy Kowalik, Michael Lagunoff, Laimonis Laimins, Ryan Langlois, Adam Lauring, Benhur Lee, David Leib, Shan-Lu Liu, Richard Longnecker, Carolina Lopez, Micah Luftig, Jennifer Lund, Balaji Manicassamy, Grant McFadden, Michael McIntosh, Andrew Mehle, W. Allen Miller, Ian Mohr, Cary Moody, Nathaniel Moorman, Anne Moscona, Bryan Mounce, Joshua Munger, Karl Münger, Eain Murphy, Mojgan Naghavi, Jay Nelson, Christopher Neufeldt, Janko Nikolich, Christine O'Connor, Akira Ono, Walter Orenstein, David Ornelles, Jing-hsiung Ou, John Parker, Colin Parrish, Andrew Pekosz, Philip Pellett, Julie Pfeiffer, Richard Plemper, Stephen Polyak, John Purdy, Dohun Pyeon, Miguel Quinones-Mateu, Rolf Renne, Charles Rice, John Schoggins, Richard Roller, Charles Russell, Rozanne Sandri-Goldin, Martin Sapp, Luis Schang, Scott Schmid, Stacey Schultz-Cherry, Bert Semler, Thomas Shenk, Guido Silvestri, Viviana Simon, Gregory Smith, Jason Smith, Katherine Spindler, Megan Stanifer, Kanta Subbarao, Wesley Sundquist, Mehul Suthar, Troy Sutton, Andrew Tai, Vera Tarakanova, Benjamin tenOever, Scott Tibbetts, Stephen Tompkins, Zsolt Toth, Koenraad van Doorslaer, Marco Vignuzzi, Nicholas Wallace, Derek Walsh, Michael Weekes, Jason Weinberg, Matthew Weitzman, Sandra Weller, Sean Whelan, Elizabeth White, Bryan Williams, Christiane Wobus, Scott Wong, and Andrew Yurochko
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COVID-19 ,Coronavirus ,DURC ,Gain of function ,SARS-CoV-2 ,biosafety ,Microbiology ,QR1-502 - Abstract
ABSTRACT Viruses have brought humanity many challenges: respiratory infection, cancer, neurological impairment and immunosuppression to name a few. Virology research over the last 60+ years has responded to reduce this disease burden with vaccines and antivirals. Despite this long history, the COVID-19 pandemic has brought unprecedented attention to the field of virology. Some of this attention is focused on concern about the safe conduct of research with human pathogens. A small but vocal group of individuals has seized upon these concerns – conflating legitimate questions about safely conducting virus-related research with uncertainties over the origins of SARS-CoV-2. The result has fueled public confusion and, in many instances, ill-informed condemnation of virology. With this article, we seek to promote a return to rational discourse. We explain the use of gain-of-function approaches in science, discuss the possible origins of SARS-CoV-2 and outline current regulatory structures that provide oversight for virological research in the United States. By offering our expertise, we – a broad group of working virologists – seek to aid policy makers in navigating these controversial issues. Balanced, evidence-based discourse is essential to addressing public concern while maintaining and expanding much-needed research in virology.
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- 2023
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15. Association between exercise frequency with renal and cardiovascular outcomes in diabetic and non-diabetic individuals at high cardiovascular risk
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Michael Böhm, Helmut Schumacher, Christian Werner, Koon K. Teo, Eva M. Lonn, Felix Mahfoud, Thimoteus Speer, Giuseppe Mancia, Josep Redon, Roland E. Schmieder, Karen Sliwa, Nikolaus Marx, Michael A. Weber, Ulrich Laufs, Bryan Williams, Salim Yusuf, and Johannes F. E. Mann
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Physical activity ,Cardiovascular outcomes ,Renal outcomes ,Secondary prevention ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Abstract Background Guidelines recommend physical activity to reduce cardiovascular (CV) events. The association between physical activity and progression of chronic kidney disease (CKD) with and without diabetes is unknown. We assessed the association of self-reported physical activity with renal and CV outcomes in high-risk patients aged ≥ 55 years over a median follow-up of 56 months in post-hoc analysis of a previously randomized trial program. Methods Analyses were done with Cox regression analysis, mixed models for repeated measures, ANOVA and χ2-test. 31,312 patients, among them 19,664 with and 11,648 without diabetes were analyzed. Results Physical activity was inversely associated with renal outcomes (doubling of creatinine, end-stage kidney disease (ESRD)) and CV outcomes (CV death, myocardial infarction, stroke, heart failure hospitalization). Moderate activity (at least 2 times/week to every day) was associated with lower risk of renal outcomes and lower incidence of new albuminuria (p
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- 2022
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16. Robust Brain Age Estimation Based on sMRI via Nonlinear Age-Adaptive Ensemble Learning
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Zhaonian Zhang, Richard Jiang, Ce Zhang, Bryan Williams, Ziping Jiang, Chang-Tsun Li, Paul Chazot, Nicola Pavese, Ahmed Bouridane, and Azeddine Beghdadi
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Brain age ,biomarks ,ensemble deep learning ,mental healthcare ,rehabilitation ,Medical technology ,R855-855.5 ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Precise prediction on brain age is urgently needed by many biomedical areas including mental rehabilitation prognosis as well as various medicine or treatment trials. People began to realize that contrasting physical (real) age and predicted brain age can help to highlight brain issues and evaluate if patients’ brains are healthy or not. Such age prediction is often challenging for single model-based prediction, while the conditions of brains vary drastically over age. In this work, we present an age-adaptive ensemble model that is based on the combination of four different machine learning algorithms, including a support vector machine (SVR), a convolutional neural network (CNN) model, and the popular GoogLeNet and ResNet deep networks. The ensemble model proposed here is nonlinearly adaptive, where age is taken as a key factor in the nonlinear combination of various single-algorithm-based independent models. In our age-adaptive ensemble method, the weights of each model are learned automatically as nonlinear functions over age instead of fixed values, while brain age estimation is based on such an age-adaptive integration of various single models. The quality of the model is quantified by the mean absolute errors (MAE) and spearman correlation between the predicted age and the actual age, with the least MAE and the highest Spearman correlation representing the highest accuracy in age prediction. By testing on the Predictive Analysis Challenge 2019 (PAC 2019) dataset, our novel ensemble model has achieved a MAE down to 3.19, which is a significantly increased accuracy in this brain age competition. If deployed in the real world, our novel ensemble model having an improved accuracy could potentially help doctors to identify the risk of brain diseases more accurately and quickly, thus helping pharmaceutical companies develop drugs or treatments precisely, and potential offer a new powerful tool for researchers in the field of brain science.
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- 2022
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17. An informatics consult approach for generating clinical evidence for treatment decisions
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Alvina G. Lai, Wai Hoong Chang, Constantinos A. Parisinos, Michail Katsoulis, Ruth M. Blackburn, Anoop D. Shah, Vincent Nguyen, Spiros Denaxas, George Davey Smith, Tom R. Gaunt, Krishnarajah Nirantharakumar, Murray P. Cox, Donall Forde, Folkert W. Asselbergs, Steve Harris, Sylvia Richardson, Reecha Sofat, Richard J. B. Dobson, Aroon Hingorani, Riyaz Patel, Jonathan Sterne, Amitava Banerjee, Alastair K. Denniston, Simon Ball, Neil J. Sebire, Nigam H. Shah, Graham R. Foster, Bryan Williams, and Harry Hemingway
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Computer applications to medicine. Medical informatics ,R858-859.7 - Abstract
Abstract Background An Informatics Consult has been proposed in which clinicians request novel evidence from large scale health data resources, tailored to the treatment of a specific patient. However, the availability of such consultations is lacking. We seek to provide an Informatics Consult for a situation where a treatment indication and contraindication coexist in the same patient, i.e., anti-coagulation use for stroke prevention in a patient with both atrial fibrillation (AF) and liver cirrhosis. Methods We examined four sources of evidence for the effect of warfarin on stroke risk or all-cause mortality from: (1) randomised controlled trials (RCTs), (2) meta-analysis of prior observational studies, (3) trial emulation (using population electronic health records (N = 3,854,710) and (4) genetic evidence (Mendelian randomisation). We developed prototype forms to request an Informatics Consult and return of results in electronic health record systems. Results We found 0 RCT reports and 0 trials recruiting for patients with AF and cirrhosis. We found broad concordance across the three new sources of evidence we generated. Meta-analysis of prior observational studies showed that warfarin use was associated with lower stroke risk (hazard ratio [HR] = 0.71, CI 0.39–1.29). In a target trial emulation, warfarin was associated with lower all-cause mortality (HR = 0.61, CI 0.49–0.76) and ischaemic stroke (HR = 0.27, CI 0.08–0.91). Mendelian randomisation served as a drug target validation where we found that lower levels of vitamin K1 (warfarin is a vitamin K1 antagonist) are associated with lower stroke risk. A pilot survey with an independent sample of 34 clinicians revealed that 85% of clinicians found information on prognosis useful and that 79% thought that they should have access to the Informatics Consult as a service within their healthcare systems. We identified candidate steps for automation to scale evidence generation and to accelerate the return of results. Conclusion We performed a proof-of-concept Informatics Consult for evidence generation, which may inform treatment decisions in situations where there is dearth of randomised trials. Patients are surprised to know that their clinicians are currently not able to learn in clinic from data on ‘patients like me’. We identify the key challenges in offering such an Informatics Consult as a service.
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- 2021
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18. Renin‐Angiotensin System Inhibitors in Patients With COVID‐19: A Meta‐Analysis of Randomized Controlled Trials Led by the International Society of Hypertension
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Sonali R. Gnanenthiran, Claudio Borghi, Dylan Burger, Bruno Caramelli, Fadi Charchar, Julio A. Chirinos, Jordana B. Cohen, Antoine Cremer, Gian Luca Di Tanna, Alexandre Duvignaud, Daniel Freilich, D. H. Frank Gommans, Abraham E. Gracia‐Ramos, Thomas A. Murray, Facundo Pelorosso, Neil R. Poulter, Michael A. Puskarich, Konstantinos D. Rizas, Rodolfo Rothlin, Markus P. Schlaich, Michael Schreinlecher, Ulrike Muscha Steckelings, Abhinav Sharma, George S. Stergiou, Christopher J. Tignanelli, Maciej Tomaszewski, Thomas Unger, Roland R. J. van Kimmenade, Richard D. Wainford, Bryan Williams, Anthony Rodgers, and Aletta E. Schutte
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acute kidney injury ,angiotensin II receptor blockers ,angiotensin‐converting enzyme inhibitors ,COVID‐19 ,hypertension ,renin‐angiotensin system inhibitors ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background Published randomized controlled trials are underpowered for binary clinical end points to assess the safety and efficacy of renin‐angiotensin system inhibitors (RASi) in adults with COVID‐19. We therefore performed a meta‐analysis to assess the safety and efficacy of RASi in adults with COVID‐19. Methods and Results MEDLINE, EMBASE, ClinicalTrials.gov, and the Cochrane Controlled Trial Register were searched for randomized controlled trials that randomly assigned patients with COVID‐19 to RASi continuation/commencement versus no RASi therapy. The primary outcome was all‐cause mortality at ≤30 days. A total of 14 randomized controlled trials met the inclusion criteria and enrolled 1838 participants (aged 59 years, 58% men, mean follow‐up 26 days). Of the trials, 11 contributed data. We found no effect of RASi versus control on all‐cause mortality (7.2% versus 7.5%; relative risk [RR], 0.95; [95% CI, 0.69–1.30]) either overall or in subgroups defined by COVID‐19 severity or trial type. Network meta‐analysis identified no difference between angiotensin‐converting enzyme inhibitors versus angiotensin II receptor blockers. RASi users had a nonsignificant reduction in acute myocardial infarction (2.1% versus 3.6%; RR, 0.59; [95% CI, 0.33–1.06]), but increased risk of acute kidney injury (7.0% versus 3.6%; RR, 1.82; [95% CI, 1.05–3.16]), in trials that initiated and continued RASi. There was no increase in need for dialysis or differences in congestive cardiac failure, cerebrovascular events, venous thromboembolism, hospitalization, intensive care admission, inotropes, or mechanical ventilation. Conclusions This meta‐analysis of randomized controlled trials evaluating angiotensin‐converting enzyme inhibitors/angiotensin II receptor blockers versus control in patients with COVID‐19 found no difference in all‐cause mortality, a borderline decrease in myocardial infarction, and an increased risk of acute kidney injury with RASi. Our findings provide strong evidence that RASi can be used safely in patients with COVID‐19.
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- 2022
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19. Serum antinuclear autoantibodies are associated with measures of oxidative stress and lifestyle factors: analysis of LIPIDOGRAM2015 and LIPIDOGEN2015 studies
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Paweł Krzemień, Sławomir Kasperczyk, Maciej Banach, Aleksandra Kasperczyk, Michał Dobrakowski, Tomasz Tomasik, Adam Windak, Mirosław Mastej, Alberico Catapano, Kausik K. Ray, Dimitri P. Mikhailidis, Peter P. Toth, George Howard, Gregory Y. H. Lip, Maciej Tomaszewski, Fadi J. Charchar, Naveed Sattar, Bryan Williams, Thomas M. MacDonald, Peter E. Penson, and Jacek J. Jóźwiak
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antinuclear autoantibody ,oxidative stress ,lifestyle diseases ,reactive oxygen species ,Medicine - Abstract
Introduction Oxidative stress is one of many factors suspected to promote antinuclear autoantibody (ANA) formation. Reactive oxygen species can induce changes in the antigenic structure of macromolecules, causing the immune system to treat them as “neo-antigens” and start production of autoantibodies. This study was designed to evaluate the relationship between oxidative stress markers, lifestyle factors and the detection of ANA. Material and methods We examined measures of oxidative stress indices of free-radical damage to lipids and proteins, such as total oxidant status (TOS), concentration of protein thiol groups (PSH), and malondialdehyde (MDA), activity of superoxide dismutase (SOD) in 1731 serum samples. The parameters of the non-enzymatic antioxidant system, such as total antioxidant status (TAS) and uric acid (UA) concentration, were also measured and the oxidative stress index (OSI-index) was calculated. All samples were tested for the presence of ANA using an indirect immunofluorescence assay (IIFA). Results The presence of ANA in women was associated with lower physical activity (p = 0.036), less frequent smoking (p = 0.007) and drinking of alcohol (p = 0.024) accompanied by significant changes in SOD isoenzymes activity (p < 0.001) and a higher uric acid (UA) concentration (p < 0.001). In ANA positive males we observed lower concentrations of PSH (p = 0.046) and increased concentrations of MDA (p = 0.047). Conclusions The results indicate that local oxidative stress may be associated with increased probability of ANA formation in a sex-specific manner.
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- 2021
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20. Increased Complement Receptor-3 levels in monocytes and granulocytes distinguish COVID-19 patients with pneumonia from those with mild symptoms
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Rajeev Gupta, Vanya Alasdair Gant, Bryan Williams, and Tariq Enver
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COVID-19 ,Flow cytometry ,Complement receptor 3 ,Hypoxia ,Therapeutics ,Immunology and inflammation ,Infectious and parasitic diseases ,RC109-216 - Abstract
Background: The reasons why some patients with COVID-19 develop pneumonia and others do not are unclear. To better understand this, we used multiparameter flow cytometry to profile circulating leukocytes from non-immunocompromised adult patients with PCR-proven COVID-19 and specifically compared those with mild symptoms with those who had developed pneumonia. Methods: Using clinically validated antibody panels we studied leukocytes from 29 patients with PCR-proven COVID-19. Ten were hypoxic requiring ventilatory support, eleven were febrile but otherwise well, and eight were convalescing having previously required ventilatory support. Additionally, we analysed patients who did not have COVID-19 but received ventilatory support for other reasons. We examined routine Full Blood Count (FBC) specimens that were surplus to routine diagnostic requirements; normal ranges were established in a historic group of healthy volunteers. Findings: We observed striking and unexpected differences in cells of the innate immune system. Levels of CD11b and CD18, which together comprise Complement Receptor 3 (CR3), were increased in granulocytes and monocytes from hypoxic COVID-19 patients, but not in those with COVID-19 who remained well, or in those without COVID-19 but ventilated for other reasons. Granulocyte and monocyte numbers were unchanged, however Natural Killer (NK) cell numbers were two-fold higher than normal in COVID-19 patients who remained well. Interpretation: CR3 is central to leukocyte activation and subsequent cytokine release in response to infection. It is also a fibrinogen receptor, and its over-expression in granulocytes and monocytes of patients with respiratory failure tables it as a candidate effector of both the thrombotic and inflammatory features of COVID-19 pneumonia, and both a biomarker of impending respiratory failure and potential therapeutic target. NK cells are innate immune cells that retain immunological memory. Rapid expansion of memory NK cells targeting common antigens shared with other Coronaviruses may explain why most patients with COVID-19 do not develop respiratory complications. Understanding the innate immune response to SARS-CoV-may uncover why most infected individuals experience mild symptoms, and inform a preventive approach to COVID-19 pneumonia in the future.
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- 2020
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21. Design and rationale of a nationwide screening analysis from the LIPIDOGRAM2015 and LIPIDOGEN2015 studies
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Jacek J. Jóźwiak, Sławomir Kasperczyk, Tomasz Tomasik, Tadeusz Osadnik, Adam Windak, Krzysztof Studziński, Mirosław Mastej, Alberico Catapano, Kausik K. Ray, Dimitri P. Mikhailidis, Peter P. Toth, George Howard, Gregory Y. H. Lip, Maciej Tomaszewski, Fadi J. Charchar, Naveed Sattar, Bryan Williams, Thomas M. MacDonald, Paweł Krzemień, Michał Dobrakowski, Aleksandra Kasperczyk, Dariusz Nowak, Łukasz Skowron, Żaneta Żak, Joanna Lewek, and Maciej Banach
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cardiovascular diseases ,cardiometabolic diseases ,atherosclerosis ,dyslipidaemia ,inflammation ,oxidative stress ,genes ,Medicine - Abstract
Introduction Cardiovascular disease (CVD) is a major cause of morbidity and mortality throughout the world. The LIPIDOGRAM2015 study was performed to estimate the prevalence of risk factors for atherosclerotic diseases as well as cardiovascular and related disorders in the primary care setting in Poland. The LIPIDOGEN2015 sub-study was designed to include a random cohort of patients in order to analyse parameters related to lipid metabolism, oxidative stress, inflammatory responses, autoimmune disorders, and gene variants that confer susceptibility to cardiometabolic and atherosclerotic diseases. Material and methods The recruitment was carried out by 438 primary care physicians in Poland. The expected number of patients recruited for the LIPIDOGRAM2015 study was 13,000–14,000 with 13–15% (1700–2000) also participating in the LIPIDOGEN2015 sub-study. Each patient had to complete a questionnaire concerning medical and family history, concomitant diseases, and pharmacotherapy. Anthropometric measurements were performed at the doctor’s office. For the LIPIDOGEN2015 sub-study, saliva samples for DNA isolation and blood samples for measurement of glycated haemoglobin, oxidative stress parameters, autoantibody levels, and inflammatory cytokine profile and apolipoprotein profile were collected. Follow-up data will be obtained from the National Health Fund in Poland. Results The LIPIDOGRAM2015 and LIPIDOGEN2015 study cohort reflects the prevalence of cardiovascular risk factors and concomitant diseases, markers of oxidative stress, the presence of autoantibodies, inflammatory cytokine profile, and apolipoprotein profile, as well as genetic variants potentially conferring susceptibility to cardiometabolic and atherosclerotic diseases. Conclusions This study presents the prevalence of different CV risk factors, with special emphasis on lipid disorders, and it assesses the relationship between inflammation, oxidative stress, and mutations in genes encoding proteins regulating lipid metabolism, as well as genes conferring susceptibility to cardiovascular, cardiometabolic, and related diseases.
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- 2020
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22. Data Management Challenges for Internet-scale 3D Search Engines.
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James Bryan Williams, Shane Scott, Timur Hindanov, and Christoph Roedig
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- 2022
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23. Deep forecasting of translational impact in medical research
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Amy P.K. Nelson, Robert J. Gray, James K. Ruffle, Henry C. Watkins, Daniel Herron, Nick Sorros, Danil Mikhailov, M. Jorge Cardoso, Sebastien Ourselin, Nick McNally, Bryan Williams, Geraint E. Rees, and Parashkev Nachev
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DSML3: Development/Pre-production: Data science output has been rolled out/validated across multiple domains/problems ,Computer software ,QA76.75-76.765 - Abstract
Summary: The value of biomedical research—a $1.7 trillion annual investment—is ultimately determined by its downstream, real-world impact, whose predictability from simple citation metrics remains unquantified. Here we sought to determine the comparative predictability of future real-world translation—as indexed by inclusion in patents, guidelines, or policy documents—from complex models of title/abstract-level content versus citations and metadata alone. We quantify predictive performance out of sample, ahead of time, across major domains, using the entire corpus of biomedical research captured by Microsoft Academic Graph from 1990–2019, encompassing 43.3 million papers. We show that citations are only moderately predictive of translational impact. In contrast, high-dimensional models of titles, abstracts, and metadata exhibit high fidelity (area under the receiver operating curve [AUROC] > 0.9), generalize across time and domain, and transfer to recognizing papers of Nobel laureates. We argue that content-based impact models are superior to conventional, citation-based measures and sustain a stronger evidence-based claim to the objective measurement of translational potential. The bigger picture: The relationship of scientific activity to real-world impact is hard to describe and even harder to quantify. Analyzing 43.3 million biomedical papers from 1990–2019, we show that deep learning models of publication, title, and abstract content can predict inclusion of a scientific paper in a patent, guideline, or policy document. We show that the best of these models, incorporating the richest information, substantially outperforms traditional metrics of paper success—citations per year—and transfers to the task of predicting Nobel Prize-preceding papers. If judgments of the translational potential of science are to be based on objective metrics, then complex models of paper content should be preferred over citations. Our approach is naturally extensible to richer scientific content and diverse measures of impact. Its wider application could maximize the real-world benefits of scientific activity in the biomedical realm and beyond.
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- 2022
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24. Prognostic Significance of Ventricular Arrhythmias in 13 444 Patients With Acute Coronary Syndrome: A Retrospective Cohort Study Based on Routine Clinical Data (NIHR Health Informatics Collaborative VA‐ACS Study)
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Arunashis Sau, Amit Kaura, Amar Ahmed, Kiran H. K. Patel, Xinyang Li, Abdulrahim Mulla, Benjamin Glampson, Vasileios Panoulas, Jim Davies, Kerrie Woods, Sanjay Gautama, Anoop D. Shah, Paul Elliott, Harry Hemingway, Bryan Williams, Folkert W. Asselbergs, Narbeh Melikian, Nicholas S. Peters, Ajay M. Shah, Divaka Perera, Rajesh Kharbanda, Riyaz S. Patel, Keith M. Channon, Jamil Mayet, and Fu Siong Ng
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acute coronary syndrome ,cardiac arrest ,ventricular arrhythmia ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background A minority of acute coronary syndrome (ACS) cases are associated with ventricular arrhythmias (VA) and/or cardiac arrest (CA). We investigated the effect of VA/CA at the time of ACS on long‐term outcomes. Methods and Results We analyzed routine clinical data from 5 National Health Service trusts in the United Kingdom, collected between 2010 and 2017 by the National Institute for Health Research Health Informatics Collaborative. A total of 13 444 patients with ACS, 376 (2.8%) of whom had concurrent VA, survived to hospital discharge and were followed up for a median of 3.42 years. Patients with VA or CA at index presentation had significantly increased risks of subsequent VA during follow‐up (VA group: adjusted hazard ratio [HR], 4.15 [95% CI, 2.42–7.09]; CA group: adjusted HR, 2.60 [95% CI, 1.23–5.48]). Patients who suffered a CA in the context of ACS and survived to discharge also had a 36% increase in long‐term mortality (adjusted HR, 1.36 [95% CI, 1.04–1.78]), although the concurrent diagnosis of VA alone during ACS did not affect all‐cause mortality (adjusted HR, 1.03 [95% CI, 0.80–1.33]). Conclusions Patients who develop VA or CA during ACS who survive to discharge have increased risks of subsequent VA, whereas those who have CA during ACS also have an increase in long‐term mortality. These individuals may represent a subgroup at greater risk of subsequent arrhythmic events as a result of intrinsically lower thresholds for developing VA.
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- 2022
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25. Using Common Enemy Graphs to Identify Communities of Coordinated Social Media Activity.
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Lucas A. Overbey, Bryan Ek, Kevin Pinzhoffer, and Bryan Williams
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- 2019
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26. Mortality risk prediction of high-sensitivity C-reactive protein in suspected acute coronary syndrome: A cohort study.
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Amit Kaura, Adam Hartley, Vasileios Panoulas, Ben Glampson, Anoop S V Shah, Jim Davies, Abdulrahim Mulla, Kerrie Woods, Joe Omigie, Anoop D Shah, Mark R Thursz, Paul Elliott, Harry Hemmingway, Bryan Williams, Folkert W Asselbergs, Michael O'Sullivan, Graham M Lord, Adam Trickey, Jonathan Ac Sterne, Dorian O Haskard, Narbeh Melikian, Darrel P Francis, Wolfgang Koenig, Ajay M Shah, Rajesh Kharbanda, Divaka Perera, Riyaz S Patel, Keith M Channon, Jamil Mayet, and Ramzi Khamis
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Medicine - Abstract
BackgroundThere is limited evidence on the use of high-sensitivity C-reactive protein (hsCRP) as a biomarker for selecting patients for advanced cardiovascular (CV) therapies in the modern era. The prognostic value of mildly elevated hsCRP beyond troponin in a large real-world cohort of unselected patients presenting with suspected acute coronary syndrome (ACS) is unknown. We evaluated whether a mildly elevated hsCRP (up to 15 mg/L) was associated with mortality risk, beyond troponin level, in patients with suspected ACS.Methods and findingsWe conducted a retrospective cohort study based on the National Institute for Health Research Health Informatics Collaborative data of 257,948 patients with suspected ACS who had a troponin measured at 5 cardiac centres in the United Kingdom between 2010 and 2017. Patients were divided into 4 hsCRP groups (15 mg/L makes it unlikely that sepsis was a major contributor.ConclusionsThese multicentre, real-world data from a large cohort of patients with suspected ACS suggest that mildly elevated hsCRP (up to 15 mg/L) may be a clinically meaningful prognostic marker beyond troponin and point to its potential utility in selecting patients for novel treatments targeting inflammation.Trial registrationClinicalTrials.gov - NCT03507309.
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- 2022
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27. Relationship Between Anti-DFS70 Autoantibodies and Oxidative Stress
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Paweł Krzemień, Sławomir Kasperczyk, Maciej Banach, Aleksandra Kasperczyk, Michał Dobrakowski, Tomasz Tomasik, Adam Windak, Mirosław Mastej, Alberico Catapano, Kausik K Ray, Dimitri P Mikhailidis, Peter P Toth, George Howard, Gregory YH Lip, Maciej Tomaszewski, Fadi J Charchar, Naveed Sattar, Bryan Williams, Thomas M MacDonald, Peter E Penson, and Jacek J Jóźwiak
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Medicine (General) ,R5-920 - Abstract
Background: The anti-DFS70 autoantibodies are one of the most commonly and widely described agent of unknown clinical significance, frequently detected in healthy individuals. It is not known whether the DFS70 autoantibodies are protective or pathogenic. One of the factors suspected of inducing the formation of anti-DFS70 antibodies is increased oxidative stress. We evaluated the coexistence of anti-DFS70 antibodies with selected markers of oxidative stress and investigated whether these antibodies could be considered as indirect markers of oxidative stress. Methods: The intensity of oxidative stress was measured in all samples via indices of free-radical damage to lipids and proteins such as total oxidant status (TOS), concentrations of lipid hydroperoxides (LPH), lipofuscin (LPS), and malondialdehyde (MDA). The parameters of the non-enzymatic antioxidant system, such as total antioxidant status (TAS) and uric acid concentration (UA), were also measured, as well as the activity of superoxide dismutase (SOD). Based on TOS and TAS values, the oxidative stress index (OSI) was calculated. All samples were also tested with indirect immunofluorescence assay (IFA) and 357 samples were selected for direct monospecific anti DFS70 enzyme-linked immunosorbent assay (ELISA) testing. Results: The anti-DFS70 antibodies were confirmed by ELISA test in 21.29% of samples. Compared with anti-DFS70 negative samples we observed 23% lower concentration of LPH ( P = .038) and 11% lower concentration of UA ( P = .005). TOS was 20% lower ( P = .014). The activity of SOD was up to 5% higher ( P = .037). The Pearson correlation showed weak negative correlation for LPH, UA, and TOS and a weak positive correlation for SOD activity. Conclusion: In samples positive for the anti-DFS70 antibody a decreased level of oxidative stress was observed, especially in the case of samples with a high antibody titer. Anti-DFS70 antibodies can be considered as an indirect marker of reduced oxidative stress or a marker indicating the recent intensification of antioxidant processes.
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- 2022
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28. Seven days treatment with the angiotensin II type 2 receptor agonist C21 in hospitalized COVID-19 patients; a placebo-controlled randomised multi-centre double-blind phase 2 trial
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Göran Tornling, Rohit Batta, Joanna C. Porter, Bryan Williams, Thomas Bengtsson, Kartikeya Parmar, Reema Kashiva, Anders Hallberg, Anne Katrine Cohrt, Kate Westergaard, Carl-Johan Dalsgaard, and Johan Raud
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COVID-19 ,viral pneumonia ,pharmacologic treatment ,acute hospitalizations ,angiotensin II type 2 receptor ,Medicine (General) ,R5-920 - Abstract
ABSTRACT: Background: COVID-19 morbidity and mortality remains high and the need for safe and effective drugs continues despite vaccines. Methods: Double-blind, placebo-controlled, multi-centre, randomised, parallel group phase 2 trial to evaluate safety and efficacy of oral angiotensin II type 2 receptor agonist C21 in hospitalized patients with COVID-19 and CRP ≥ 50-150 mg/L conducted at eight sites in India (NCT04452435). Patients were randomly assigned 100 mg C21 bid or placebo for 7 days in addition to standard of care. Primary endpoint: reduction in CRP. The study period was 21 July to 13 October 2020. Findings: 106 patients were randomised and included in the analysis (51 C21, 55 placebo). There was no significant group difference in reduction of CRP, 81% and 78% in the C21 and placebo groups, respectively, with a treatment effect ratio of 0.85 [90% CI 0.57, 1.26]. In a secondary analysis in patients requiring supplemental oxygen at randomisation, CRP was reduced in the C21 group compared to placebo. At the end of the 7-day treatment, 37 (72.5%) and 30 (54.5%) of the patients did not require supplemental oxygen in the C21 and placebo group, respectively (OR 2.20 [90% CI 1.12, 4.41]). A post hoc analysis showed that at day 14, the proportion of patients not requiring supplemental oxygen was 98% and 80% in the C21 group compared to placebo (OR 12.5 [90% CI 2.9, 126]). Fewer patients required mechanical ventilation (one C21 patient; four placebo patients), and C21 was associated with a numerical reduction in the mortality rate (one vs three in the C21 and placebo group, respectively). Treatment with C21 was safe and well tolerated. Interpretation: Among hospitalised patients with COVID-19 receiving C21 for 7 days there was no reduction in CRP compared to placebo. However, a post-hoc analysis indicated a marked reduction of requirement for oxygen at day 14. The day 14 results from this study justify further evaluation in a Phase 3 study and such a trial is currently underway. Funding: Vicore Pharma AB and LifeArc, UK.
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- 2021
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29. Facing the Challenge of Lowering Blood Pressure and Cholesterol in the Same Patient: Report of a Symposium at the European Society of Hypertension
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Bryan Williams, Stefano Masi, Jacek Wolf, and Roland E. Schmieder
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Cardiovascular disease ,Early intervention ,Hypertension ,Single-pill combinations ,Treatment adherence ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Abstract A symposium held at the 29th European Meeting on Hypertension and Cardiovascular Protection in Milan, Italy, discussed the potential impact and long-term benefits of early active management of cardiovascular disease (CVD) risk in patients with hypertension, and potential barriers to this strategy. Hypertension often aggregates with other cardiovascular risk factors, exponentially increasing morbidity and mortality. While effective therapies to treat hypertension exist, a substantial number of patients still experience major cardiovascular events. Two major issues account for these disappointing results: interventions initiated too late in the disease trajectory and lack of effective translation of the research findings into daily clinical practice. Results from genetic studies suggest that lifetime exposure to lower blood pressure (BP) and cholesterol levels due to protective gene mutations, can provide greater cardiovascular benefits than middle-/late-age interventions. Clinical guidelines suggest adding statins to BP-lowering therapies for further cardiovascular benefits in most hypertensive patients; however, real-world data show that physicians’ compliance with these recommendations and patients’ adherence to BP- and lipid-lowering treatments remain poor, resulting in poor risk factor control and an increased risk of adverse outcomes. The use of single-pill combinations (SPC) can partially mitigate these issues, as they are associated with increased patient adherence and improved BP control. Treatment with SPC has been recommended in the European Hypertension Guidelines, but optimization of the total CVD risk may need adoption of more ambitious treatment strategies aimed to deliver single pills that control multiple CVD risk factors. Amlodipine, perindopril and atorvastatin have been shown to improve BP and lipid levels to a great extent when given separately, and this combination has also been shown to improve cardiovascular outcomes. Overall, early intervention in patients with hypertension with use of an effective, high-intensity cardiovascular risk reduction regimen and attention to medication adherence through reducing pill burden are likely to result in optimal outcomes.
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- 2020
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30. Methodology for sampling women at high maternal risk in administrative data
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Jennifer Vanderlaan, Anne Dunlop, Roger Rochat, Bryan Williams, and Susan E. Shapiro
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Maternal morbidity ,Pregnancy, high-risk ,Comorbidity ,International classification of diseases ,Risk assessment ,Gynecology and obstetrics ,RG1-991 - Abstract
Abstract Background In population level studies, the conventional practice of categorizing women into low and high maternal risk samples relies upon ascertaining the presence of various comorbid conditions in administrative data. Two problems with the conventional method include variability in the recommended comorbidities to consider and inability to distinguish between maternal and fetal risks. High maternal risk sample selection may be improved by using the Obstetric Comorbidity Index (OCI), a system of risk scoring based on weighting comorbidities associated with maternal end organ damage. The purpose of this study was to compare the net benefit of using OCI risk scoring vs the conventional risk identification method to identify a sample of women at high maternal risk in administrative data. Methods This was a net benefit analysis using linked delivery hospitalization discharge and vital records data for women experiencing singleton births in Georgia from 2008 to 2012. We compared the value identifying a sample of women at high maternal risk using the OCI score to the conventional method of dichotomous identification of any comorbidities. Value was measured by the ability to select a sample of women designated as high maternal risk who experienced severe maternal morbidity or mortality. Results The high maternal risk sample created with the OCI had a small but positive net benefit (+ 0.6), while the conventionally derived sample had a negative net benefit indicating the sample selection performed worse than identifying no woman as high maternal risk. Conclusions The OCI can be used to select women at high maternal risk in administrative data. The OCI provides a consistent method of identification for women at risk of maternal morbidity and mortality and avoids confounding all obstetric risk factors with specific maternal risk factors. Using the OCI may help reduce misclassification as high maternal risk and improve the consistency in identifying women at high maternal risk in administrative data.
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- 2019
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31. Defining Potential Therapeutic Targets in Coronavirus Disease 2019: A Cross-Sectional Analysis of a Single-Center Cohort
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Nishkantha Arulkumaran, PhD, Timothy Arthur Chandos Snow, FFICM, Adarsh Kulkarni, MD, David Brealey, PhD, Hannah Rickman, MB BChir, Chloe Rees-Spear, MSc, Moira J. Spyer, PhD, Judith Heaney, PhD, Edmund Garr, PhD, Bryan Williams, PhD, Peter Cherepanov, PhD, George Kassiotis, PhD, Michael Lunn, PhD, Catherine Houlihan, PhD, Laura E. McCoy, PhD, Eleni Nastouli, FRCPath, and Mervyn Singer, FRCP
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Medical emergencies. Critical care. Intensive care. First aid ,RC86-88.9 - Abstract
OBJECTIVES:. Multiple mechanisms have been proposed to explain disease severity in coronavirus disease 2019. Therapeutic approaches need to be underpinned by sound biological rationale. We evaluated whether serum levels of a range of proposed coronavirus disease 2019 therapeutic targets discriminated between patients with mild or severe disease. DESIGN:. A search of ClinicalTrials.gov identified coronavirus disease 2019 immunological drug targets. We subsequently conducted a retrospective observational cohort study investigating the association of serum biomarkers within the first 5 days of hospital admission relating to putative therapeutic biomarkers with illness severity and outcome. SETTING:. University College London, a tertiary academic medical center in the United Kingdom. PATIENTS:. Patients admitted to hospital with a diagnosis of coronavirus disease 2019. INTERVENTIONS:. None. MEASUREMENTS AND MAIN RESULTS:. Eighty-six patients were recruited, 44 (51%) with mild disease and 42 (49%) with severe disease. We measured levels of 10 cytokines/signaling proteins related to the most common therapeutic targets (granulocyte-macrophage colony-stimulating factor, interferon-α2a, interferon-β, interferon-γ, interleukin-1β, interleukin-1 receptor antagonist, interleukin-6, interleukin-7, interleukin-8, tumor necrosis factor-α), immunoglobulin G antibodies directed against either coronavirus disease 2019 spike protein or nucleocapsid protein, and neutralization titers of antibodies. Four-hundred seventy-seven randomized trials, including 168 different therapies against 83 different pathways, were identified. Six of the 10 markers (interleukin-6, interleukin-7, interleukin-8, interferon-α2a, interferon-β, interleukin-1 receptor antagonist) discriminated between patients with mild and severe disease, although most were similar or only modestly raised above that seen in healthy volunteers. A similar proportion of patients with mild or severe disease had detectable spike protein or nucleocapsid protein immunoglobulin G antibodies with equivalent levels between groups. Neutralization titers were higher among patients with severe disease. CONCLUSIONS:. Some therapeutic and prognostic biomarkers may be useful in identifying coronavirus disease 2019 patients who may benefit from specific immunomodulatory therapies, particularly interleukin-6. However, biomarker absolute values often did not discriminate between patients with mild and severe disease or death, implying that these immunomodulatory treatments may be of limited benefit.
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- 2021
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32. Renin Angiotensin System Inhibition as treatment for Covid-19?
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Professor Bryan Williams, FMedSci
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Medicine (General) ,R5-920 - Published
- 2021
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33. Finding a Middle Ground for Computer-Aided Cryptography.
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Evan Austin, Scott C. Batson, Peter Curry, and Bryan Williams
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- 2018
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34. Deep forecasting of translational impact in medical research.
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Amy P. K. Nelson, Robert J. Gray, James K. Ruffle, Henry C. Watkins, Daniel Herron, Nick Sorros, Danil Mikhailov, M. Jorge Cardoso, Sébastien Ourselin, Nick McNally, Bryan Williams, Geraint E. Rees, and Parashkev Nachev
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- 2021
35. Performance of universal early warning scores in different patient subgroups and clinical settings: a systematic review
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Amitava Banerjee, Riyaz Patel, Bryan Williams, Timothy Bonnici, Baneen Alhmoud, and Daniel Melley
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Medicine - Abstract
Objective To assess predictive performance of universal early warning scores (EWS) in disease subgroups and clinical settings.Design Systematic review.Data sources Medline, CINAHL, Embase and Cochrane database of systematic reviews from 1997 to 2019.Inclusion criteria Randomised trials and observational studies of internal or external validation of EWS to predict deterioration (mortality, intensive care unit (ICU) transfer and cardiac arrest) in disease subgroups or clinical settings.Results We identified 770 studies, of which 103 were included. Study designs and methods were inconsistent, with significant risk of bias (high: n=16 and unclear: n=64 and low risk: n=28). There were only two randomised trials. There was a high degree of heterogeneity in all subgroups and in national early warning score (I2=72%–99%). Predictive accuracy (mean area under the curve; 95% CI) was highest in medical (0.74; 0.74 to 0.75) and surgical (0.77; 0.75 to 0.80) settings and respiratory diseases (0.77; 0.75 to 0.80). Few studies evaluated EWS in specific diseases, for example, cardiology (n=1) and respiratory (n=7). Mortality and ICU transfer were most frequently studied outcomes, and cardiac arrest was least examined (n=8). Integration with electronic health records was uncommon (n=9).Conclusion Methodology and quality of validation studies of EWS are insufficient to recommend their use in all diseases and all clinical settings despite good performance of EWS in some subgroups. There is urgent need for consistency in methods and study design, following consensus guidelines for predictive risk scores. Further research should consider specific diseases and settings, using electronic health record data, prior to large-scale implementation.PROSPERO registration number PROSPERO CRD42019143141.
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- 2021
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36. Blood pressure measurement modalities and indexed left ventricular mass in men with low-risk hypertension confirmed by ambulatory monitoring
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Peter S. Lacy, Dawid Jedrzejewski, Ewan McFarlane, and Bryan Williams
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Physiology ,Internal Medicine ,Cardiology and Cardiovascular Medicine - Published
- 2023
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37. Prospective meta-analysis protocol on randomised trials of renin–angiotensin system inhibitors in patients with COVID-19: an initiative of the International Society of Hypertension
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Anthony Rodgers, George Stergiou, Bryan Williams, Sonali Rukshana Gnanenthiran, Markus P Schlaich, Claudio Borghi, Dylan Burger, Fadi Charchar, Neil R Poulter, Ulrike Muscha Steckelings, Maciej Tomaszewski, Thomas Unger, Richard D Wainford, and Aletta E Schutte
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Medicine - Abstract
Introduction Whether ACE inhibitors (ACEi) or angiotensin II receptor blocker (ARB) therapy should be continued, initiated or ceased in patients with COVID-19 is uncertain. Given the widespread use of ACEi/ARBs worldwide, guidance on the use of these drugs is urgently needed. This prospective meta-analysis aims to pool data from randomised controlled trials (RCTs) to assess the safety and efficacy of ACEi/ARB therapy in adults infected with SARS-CoV-2.Methods and analysis RCTs will be eligible if they compare patients with COVID-19 randomised to ACEi/ARB continuation or commencement versuss no ACEi/ARB therapy; study duration ≥14 days; recruitment completed between March 2020 and May 2021. The primary outcome will be all-cause mortality at ≤30 days. Secondary outcomes will include mechanical ventilation, admission to intensive care or cardiovascular events at short-term follow-up (≤30 days) and all-cause mortality at longer-term follow-up (>1 month). Prespecified subgroup analyses will assess the effect of sex; age; comorbidities; smoking status; ethnicity; country of origin on all-cause mortality. A search of ClinicalTrials.gov has been performed, which will be followed by a formal search of trial registers, preprint servers, MEDLINE, EMBASE and Cochrane Central Register of Controlled Trials to identify RCTs that meet inclusion criteria. To date, a search of ClinicalTrials.gov identified 21 potentially eligible trials for this meta-analysis. We will request trial investigators/sponsors to contribute standardised grouped tabular outcome data.Ethics and dissemination Ethics approval and informed consent will be the responsibility of the individual RCTs. Dissemination of results will occur by peer-reviewed publication. The results of our analysis can inform public health policy and clinical decision making regarding ACEi/ARB use in patients with COVID-19 on a global scale.
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- 2021
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38. Endovascular baroreflex amplification and the effect on sympathetic nerve activity in patients with resistant hypertension: A proof-of-principle study
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Monique E. A. M. van Kleef, Karsten Heusser, André Diedrich, P. Liam Oey, Jens Tank, Jens Jordan, Peter J. Blankestijn, Bryan Williams, and Wilko Spiering
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Medicine ,Science - Abstract
Background First in human studies suggest that endovascular baroreflex amplification (EVBA) lowers blood pressure (BP). To explore potential mechanisms for BP reduction, this study examines the effects of EVBA on muscle sympathetic nerve activity (MSNA) and baroreceptor sensitivity (BRS). Methods In a single-center sub-study of the CALM-DIEM study (Controlling And Lowering blood pressure with the MobiusHD—Defining Efficacy Markers), 14 patients with resistant hypertension were treated with EVBA. Microneurography and non-invasive continuous BP measurements were performed at baseline and three months after MobiusHD implantation. The primary outcome was change in MSNA. Secondary outcomes were change in baroreflex sensitivity (BRS), cardiovascular responses to a sympathetic stimulus, BP, heart rate (HR) and heart rate variability (HRV). Results The primary endpoint was obtained in 10 of 14 patients enrolled in the sub-study. MSNA burst frequency and burst incidence decreased in 6 of 10 patients: mean change -4.1 bursts/min (95% confidence interval -12.2 to 4.0) and -3.8 bursts/100 heartbeats (-15.2 to 7.7). MSNA spike frequency and spike count decreased in 8 of 10 patients: mean change -2.8 spikes/sec (-7.3 to 1.8) and -3.0 spikes/heartbeat (-6.1 to 0.1). Change in MSNA and BP were not correlated. Office BP decreased by -14/-6 mmHg (-27 to -2/-15 to 3). We observed a trend towards decreased HR (-5 bpm, -10 to 1) and increased total power HRV (623 msec2, 78 to 1168). In contrast, BRS and cardiovascular responses remained unchanged after EVBA. Conclusions In this proof-of-principle study, EVBA did not significantly decrease MSNA in patients with resistant hypertension. EVBA did not impair baroreflex function. Trial registration Clinical trial registration at NCT02827032.
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- 2021
39. Estimated impact of the COVID-19 pandemic on cancer services and excess 1-year mortality in people with cancer and multimorbidity: near real-time data on cancer care, cancer deaths and a population-based cohort study
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Richard D Neal, Amitava Banerjee, Deenan Pillay, Vahe Nafilyan, Clare Turnbull, Harry Hemingway, Bryan Williams, Mark Lawler, Monica Jones, Kathy Pritchard-Jones, Mahdad Noursadeghi, Richard Sullivan, Graham R Foster, Ben Humberstone, Alvina G Lai, Laura Pasea, Geoff Hall, Wai Hoong Chang, Michail Katsoulis, David Linch, Derralynn Hughes, Martin D Forster, Natalie K Fitzpatrick, Kathryn Boyd, Tariq Enver, Matt Cooper, and Charlie Davie
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Medicine - Abstract
Objectives To estimate the impact of the COVID-19 pandemic on cancer care services and overall (direct and indirect) excess deaths in people with cancer.Methods We employed near real-time weekly data on cancer care to determine the adverse effect of the pandemic on cancer services. We also used these data, together with national death registrations until June 2020 to model deaths, in excess of background (pre-COVID-19) mortality, in people with cancer. Background mortality risks for 24 cancers with and without COVID-19-relevant comorbidities were obtained from population-based primary care cohort (Clinical Practice Research Datalink) on 3 862 012 adults in England.Results Declines in urgent referrals (median=−70.4%) and chemotherapy attendances (median=−41.5%) to a nadir (lowest point) in the pandemic were observed. By 31 May, these declines have only partially recovered; urgent referrals (median=−44.5%) and chemotherapy attendances (median=−31.2%). There were short-term excess death registrations for cancer (without COVID-19), with peak relative risk (RR) of 1.17 at week ending on 3 April. The peak RR for all-cause deaths was 2.1 from week ending on 17 April. Based on these findings and recent literature, we modelled 40% and 80% of cancer patients being affected by the pandemic in the long-term. At 40% affected, we estimated 1-year total (direct and indirect) excess deaths in people with cancer as between 7165 and 17 910, using RRs of 1.2 and 1.5, respectively, where 78% of excess deaths occured in patients with ≥1 comorbidity.Conclusions Dramatic reductions were detected in the demand for, and supply of, cancer services which have not fully recovered with lockdown easing. These may contribute, over a 1-year time horizon, to substantial excess mortality among people with cancer and multimorbidity. It is urgent to understand how the recovery of general practitioner, oncology and other hospital services might best mitigate these long-term excess mortality risks.
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- 2020
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40. Prognostic significance of troponin level in 3121 patients presenting with atrial fibrillation (The NIHR Health Informatics Collaborative TROP‐AF study)
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Amit Kaura, Ahran D. Arnold, Vasileios Panoulas, Benjamin Glampson, Jim Davies, Abdulrahim Mulla, Kerrie Woods, Joe Omigie, Anoop D. Shah, Keith M. Channon, Jonathan N. Weber, Mark R. Thursz, Paul Elliott, Harry Hemingway, Bryan Williams, Folkert W. Asselbergs, Michael O'Sullivan, Graham M. Lord, Narbeh Melikian, David C. Lefroy, Darrel P. Francis, Ajay M. Shah, Rajesh Kharbanda, Divaka Perera, Riyaz S. Patel, and Jamil Mayet
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angiography ,atrial fibrillation ,coronary artery disease ,mortality ,troponin ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background Patients presenting with atrial fibrillation (AF) often undergo a blood test to measure troponin, but interpretation of the result is impeded by uncertainty about its clinical importance. We investigated the relationship between troponin level, coronary angiography, and all‐cause mortality in real‐world patients presenting with AF. Methods and Results We used National Institute of Health Research Health Informatics Collaborative data to identify patients admitted between 2010 and 2017 at 5 tertiary centers in the United Kingdom with a primary diagnosis of AF. Peak troponin results were scaled as multiples of the upper limit of normal. A total of 3121 patients were included in the analysis. Over a median follow‐up of 1462 (interquartile range, 929–1975) days, there were 586 deaths (18.8%). The adjusted hazard ratio for mortality associated with a positive troponin (value above upper limit of normal) was 1.20 (95% CI, 1.01–1.43; P
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- 2020
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41. 2018 Practice guidelines for the management of arterial hypertension of the European Society of Cardiology and the European Society of Hypertension
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Bryan Williams, Giuseppe Mancia, Wilko Spiering, Enrico Agabiti Rosei, Michel Azizi, Michel Burnier, Denis Clement, Antonio Coca, Giovanni De Simone, Anna Dominiczak, Thomas Kahan, Felix Mahfoud, Josep Redon, Luis Ruilope, Alberto Zanchetti, Mary Kerins, Sverre Kjeldsen, Reinhold Kreutz, Stéphane Laurent, Gregory Y. H. Lip, Richard McManus, Krzysztof Narkiewicz, Frank Ruschitzka, Roland Schmieder, Evgeny Shlyakhto, Konstantinos Tsioufis, Victor Aboyans, and Ileana Desormais
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blood pressure ,blood pressure measurement ,blood pressure treatment thresholds and targets ,hypertension-mediated organ damage ,lifestyle interventions ,drug therapy ,combination therapy ,device therapy ,secondary hypertension ,special conditions ,adherence ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
These practice guidelines on the management of arterial hypertension are a concise summary of the more extensive ones prepared by the Task Force jointly appointed by the European Society of Hypertension and the European Society of Cardiology. These guidelines have been prepared on the basis of the best available evidence on all issues deserving recommendations; their role must be educational and not prescriptive or coercive for the management of individual subjects who may differ widely in their personal, medical and cultural characteristics. The members of the Task Force have participated independently in the preparation of these guidelines, drawing on their academic and clinical experience and by objective examination and interpretation of all available literature. A disclosure of their potential conflict of interest is reported on the websites of the ESH and the ESC.
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- 2018
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42. WHO's Therapeutics and COVID-19 Living Guideline on mAbs needs to be reassessed
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Mary Y Wu, Edward J Carr, Ruth Harvey, Harriet V Mears, Svend Kjaer, Hermaleigh Townsley, Agnieszka Hobbs, Martina Ragno, Lou S Herman, Lorin Adams, Steve Gamblin, Michael Howell, Rupert Beale, Michael Brown, Bryan Williams, Sonia Gandhi, Charles Swanton, Emma C Wall, and David L V Bauer
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General Medicine - Published
- 2022
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43. Sotrovimab restores neutralization against current Omicron subvariants in patients with blood cancer
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Mary Y. Wu, Scott T.C. Shepherd, Annika Fendler, Edward J. Carr, Lewis Au, Ruth Harvey, Giulia Dowgier, Agnieszka Hobbs, Lou S. Herman, Martina Ragno, Lorin Adams, Andreas M. Schmitt, Zayd Tippu, Benjamin Shum, Sheima Farag, Aljosja Rogiers, Nicola O’Reilly, Philip Bawumia, Callie Smith, Eleanor Carlyle, Kim Edmonds, Lyra Del Rosario, Karla Lingard, Mary Mangwende, Lucy Holt, Hamid Ahmod, Justine Korteweg, Tara Foley, Taja Barber, Stephanie Hepworth, Andrea Emslie-Henry, Niamh Caulfield-Lynch, Fiona Byrne, Daqi Deng, Bryan Williams, Michael Brown, Simon Caidan, Mike Gavrielides, James I. MacRae, Gavin Kelly, Kema Peat, Denise Kelly, Aida Murra, Kayleigh Kelly, Molly O’Flaherty, Sanjay Popat, Nadia Yousaf, Shaman Jhanji, Kate Tatham, David Cunningham, Nicholas Van As, Kate Young, Andrew J.S. Furness, Lisa Pickering, Rupert Beale, Charles Swanton, Sonia Gandhi, Steve Gamblin, David L.V. Bauer, George Kassiotis, Michael Howell, Susanna Walker, Emma Nicholson, James Larkin, Emma C. Wall, and Samra Turajlic
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Cancer Research ,Oncology - Published
- 2023
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44. Examining patient benefit
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James Wilson, Parashkev Nachev, Daniel Herron, Nick McNally, Bryan Williams, and Geraint Rees
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Geography, Planning and Development ,Management, Monitoring, Policy and Law - Published
- 2023
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45. Comparative effects of microvascular and macrovascular disease on the risk of major outcomes in patients with type 2 diabetes
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Kamel Mohammedi, Mark Woodward, Michel Marre, Stephen Colagiuri, Mark Cooper, Stephen Harrap, Giuseppe Mancia, Neil Poulter, Bryan Williams, Sophia Zoungas, and John Chalmers
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Type 2 diabetes ,Microvascular disease ,Macrovascular disease ,Mortality ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Abstract Background Microvascular disease is associated with a high risk of macrovascular events in patients with type 2 diabetes, but the impact of macrovascular disease on the risk of microvascular events remains unknown. We sought to evaluate the respective effects of prior microvascular and macrovascular disease on the risk of major outcomes, including microvascular events, in these patients. Methods Participants in the Action in Diabetes and Vascular Disease: PreterAx and DiamicroN Modified-Release Controlled Evaluation (ADVANCE) trial (n = 11,140) and the ADVANCE-ON post-trial study (n = 8494) were categorized into 4 groups at baseline: dual absence of microvascular or macrovascular disease (n = 6789), presence of microvascular disease alone (n = 761), macrovascular disease alone (n = 3196), and both (n = 394). Outcomes were all-cause mortality, major macrovascular events (MACE), and major clinical microvascular events. Results All-cause mortality, MACE, and major clinical microvascular events occurred in 2265 (20%), 2166 (19%), and 807 (7%) participants respectively, during a median follow-up of 9.9 (inter-quartile interval 5.6–10.9) years. The adjusted hazard ratios [95% CI] of death, MACE, and major clinical microvascular events were each greater in patients with baseline microvascular disease (1.43 [1.20–1.71], 1.64 [1.37–1.97], and 4.74 [3.86–5.82], respectively), macrovascular disease (1.43 [1.30–1.57], 2.04 [1.86–2.25], and 1.26 [1.06–1.51]) or both (2.01 [1.65–2.45], 2.92 [2.40–3.55], and 6.30 [4.93–8.06]) compared with those without these conditions. No interaction was observed between baseline microvascular and macrovascular disease for these events. The addition of microvascular disease (change in c-statistic [95% CI] 0.005 [0.002–0.008], p = 0.02) or macrovascular disease (0.005 [0.002–0.007], p
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- 2017
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46. Addressing global disparities in blood pressure control: perspectives of the International Society of Hypertension
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Aletta E Schutte, Tazeen H Jafar, Neil R Poulter, Albertino Damasceno, Nadia A Khan, Peter M Nilsson, Jafar Alsaid, Dinesh Neupane, Kazuomi Kario, Hind Beheiry, Sofie Brouwers, Dylan Burger, Fadi J Charchar, Myeong-Chan Cho, Tomasz J Guzik, Ghazi F Haji Al-Saedi, Muhammad Ishaq, Hiroshi Itoh, Erika S W Jones, Taskeen Khan, Yoshihiro Kokubo, Praew Kotruchin, Elizabeth Muxfeldt, Augustine Odili, Mansi Patil, Udaya Ralapanawa, Cesar A Romero, Markus P Schlaich, Abdulla Shehab, Ching Siew Mooi, U Muscha Steckelings, George Stergiou, Rhian M Touyz, Thomas Unger, Richard D Wainford, Ji-Guang Wang, Bryan Williams, Brandi M Wynne, Maciej Tomaszewski, Faculty of Medicine and Pharmacy, Brussels Heritage Lab, Pharmaceutical and Pharmacological Sciences, and Experimental Pharmacology
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Epidemiology ,Physiology ,Prevention ,Global ,Awareness ,Cardiovascular disease ,Inequity ,Treatment ,Regions ,International ,Physiology (medical) ,Control ,Hypertension ,Internal Medicine ,pharmacology ,Cardiology and Cardiovascular Medicine - Abstract
Abstract Raised blood pressure (BP) is the leading cause of preventable death in the world. Yet, its global prevalence is increasing, and it remains poorly detected, treated, and controlled in both high- and low-resource settings. From the perspective of members of the International Society of Hypertension based in all regions, we reflect on the past, present, and future of hypertension care, highlighting key challenges and opportunities, which are often region-specific. We report that most countries failed to show sufficient improvements in BP control rates over the past three decades, with greater improvements mainly seen in some high-income countries, also reflected in substantial reductions in the burden of cardiovascular disease and deaths. Globally, there are significant inequities and disparities based on resources, sociodemographic environment, and race with subsequent disproportionate hypertension-related outcomes. Additional unique challenges in specific regions include conflict, wars, migration, unemployment, rapid urbanization, extremely limited funding, pollution, COVID-19-related restrictions and inequalities, obesity, and excessive salt and alcohol intake. Immediate action is needed to address suboptimal hypertension care and related disparities on a global scale. We propose a Global Hypertension Care Taskforce including multiple stakeholders and societies to identify and implement actions in reducing inequities, addressing social, commercial, and environmental determinants, and strengthening health systems implement a well-designed customized quality-of-care improvement framework.
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- 2022
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47. Renal denervation in the antihypertensive arsenal – knowns and known unknowns
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Franz H. Messerli, Chirag Bavishi, Jana Brguljan, Michel Burnier, Stephan Dobner, Fernando Elijovich, Keith C. Ferdinand, Sverre Kjeldsen, Cheryl L. Laffer, C. Venkata S Ram, Emrush Rexhaj, Luis M. Ruilope, Evgeniya V. Shalaeva, George C.M. Siontis, Jan A. Staessen, Stephen C. Textor, Wanpen Vongpatanasin, Liffert Vogt, Massimo Volpe, Jiguang Wang, Bryan Williams, Nephrology, ACS - Microcirculation, and APH - Health Behaviors & Chronic Diseases
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CHRONIC KIDNEY-DISEASE ,hypertension ,Physiology ,Kidney ,antihypertensive treatment ,OBSTRUCTIVE SLEEP-APNEA ,Internal Medicine ,Humans ,Sympathectomy ,renal denervation ,Antihypertensive Agents ,UNCONTROLLED HYPERTENSION ,PAROXYSMAL ATRIAL-FIBRILLATION ,Science & Technology ,refractory hypertension ,SYMPLICITY HTN-3 ,AMBULATORY BLOOD-PRESSURE ,blood pressure ,Denervation ,BAROREFLEX ACTIVATION THERAPY ,Treatment Outcome ,Peripheral Vascular Disease ,Cardiovascular System & Cardiology ,SYMPATHETIC DENERVATION ,HEART-FAILURE ,TREATMENT-RESISTANT HYPERTENSION ,610 Medizin und Gesundheit ,Cardiology and Cardiovascular Medicine ,Life Sciences & Biomedicine - Abstract
Even though it has been more than a decade since renal denervation (RDN) was first used to treat hypertension and an intense effort on researching this therapy has been made, it is still not clear how RDN fits into the antihypertensive arsenal. There is no question that RDN lowers blood pressure (BP), it does so to an extent at best corresponding to one antihypertensive drug. The procedure has an excellent safety record. However, it remains clinically impossible to predict whose BP responds to RDN and whose does not. Long-term efficacy data on BP reduction are still unconvincing despite the recent results in the SPYRAL HTN-ON MED trial; experimental studies indicate that reinnervation is occurring after RDN. Although BP is an acceptable surrogate endpoint, there is complete lack of outcome data with RDN. Clear indications for RDN are lacking although patients with resistant hypertension, those with documented increase in activity of the sympathetic system and perhaps those who desire to take fewest medication may be considered. ispartof: JOURNAL OF HYPERTENSION vol:40 issue:10 pages:1859-1875 ispartof: location:Netherlands status: published
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- 2022
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48. Harmonization of the American College of Cardiology/American Heart Association and European Society of Cardiology/European Society of Hypertension Blood Pressure/Hypertension Guidelines
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Paul K Whelton, Robert M Carey, Giuseppe Mancia, Reinhold Kreutz, Joshua D Bundy, and Bryan Williams
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Hypertension ,Cardiology ,Humans ,Blood Pressure ,American Heart Association ,Cardiology and Cardiovascular Medicine ,Societies, Medical ,United States - Abstract
The 2017 American College of Cardiology/American Heart Association and 2018 European Society of Cardiology/European Society of Hypertension clinical practice guidelines for management of high blood pressure/hypertension are influential documents. Both guidelines are comprehensive, were developed using rigorous processes, and underwent extensive peer review. The most notable difference between the 2 guidelines is the blood pressure cut points recommended for the diagnosis of hypertension. There are also differences in the timing and intensity of treatment, with the American College of Cardiology/American Heart Association guideline recommending a somewhat more intensive approach. Overall, there is substantial concordance in the recommendations provided by the 2 guideline-writing committees, with greater congruity between them than their predecessors. Additional harmonization of future guidelines would help to underscore the commonality of their core recommendations and could serve to catalyze changes in practice that would lead to improved prevention, awareness, treatment, and control of hypertension, worldwide.
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- 2022
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49. Cumulative Systolic Blood Pressure Load and Cardiovascular Risk in Patients With Diabetes
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Nelson Wang, Katie Harris, Pavel Hamet, Stephen Harrap, Giuseppe Mancia, Neil Poulter, Bryan Williams, Sophia Zoungas, Mark Woodward, John Chalmers, and Anthony Rodgers
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Diabetes Mellitus, Type 2 ,Cardiovascular Diseases ,Heart Disease Risk Factors ,Risk Factors ,Gliclazide ,Hypertension ,Humans ,Blood Pressure ,Cardiology and Cardiovascular Medicine - Abstract
Standard measures of blood pressure (BP) do not account for both the magnitude and duration of exposure to elevated BP over time.The purpose of this study was to assess the association between cumulative systolic blood pressure (SBP) load and risk of cardiovascular events in patients with type 2 diabetes.A post hoc analysis of patients with type 2 diabetes followed by the ADVANCE-ON (Action in Diabetes and Vascular Disease: Preterax and Diamicron Modified Release Controlled Evaluation - Observational Study). Cumulative SBP load was defined as the area under curve for SBP values ≥130 mm Hg divided by the area under curve for all measured SBP values over a 24-month exposure period. HRs for the association between cumulative SBP load with major cardiovascular events and death were estimated using Cox models.Over a median 7.6 years of follow-up, 1,469 major cardiovascular events, 1,615 deaths, and 660 cardiovascular deaths were observed in 9,338 participants. Each 1-SD increase in cumulative SBP load was associated with a 14% increase in major cardiovascular events (HR: 1.14; 95% CI: 1.09-1.20), 13% increase in all-cause mortality (HR: 1.13; 95% CI: 1.13-1.18), and 21% increase in cardiovascular death (HR: 1.21; 95% CI: 1.13-1.29). For the prediction of cardiovascular events and death, cumulative SBP load outperformed mean SBP, time-below-target SBP, and visit-to-visit SBP variability in terms of Akaike information criterion and net reclassification indexes.Cumulative SBP load may provide better prediction of major cardiovascular events compared with traditional BP measures among patients with type 2 diabetes. These findings reinforce the importance of both the magnitude and duration of exposure to elevated SBP in assessing cardiovascular risk. (Action in Diabetes and Vascular Disease Preterax and Diamicron MR Controlled Evaluation Post Trial Observational Study [ADVANCE-ON]; NCT00949286).
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- 2022
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50. Ventricular-Arterial Coupling Derived From Proximal Aortic Stiffness and Aerobic Capacity Across the Heart Failure Spectrum
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Nicola Riccardo Pugliese, Alessio Balletti, Silvia Armenia, Nicolò De Biase, Francesco Faita, Alessandro Mengozzi, Francesco Paneni, Frank Ruschitzka, Agostino Virdis, Lorenzo Ghiadoni, Stefano Taddei, Bryan Williams, Francesco Antonini-Canterin, and Stefano Masi
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Heart Failure ,Exercise Tolerance ,Vascular Stiffness ,Predictive Value of Tests ,Humans ,Stroke Volume ,Radiology, Nuclear Medicine and imaging ,Cardiology and Cardiovascular Medicine ,Ventricular Function, Left - Abstract
Ventricular-arterial coupling (VAC) can be evaluated as the ratio between arterial stiffness (pulsed wave velocity [PWV]) and myocardial deformation (global longitudinal strain [GLS]).This study aimed to evaluate VAC across the spectrum of heart failure (HF).The authors introduced a Doppler-derived, single-beat technique to estimate aortic arch PWV (aa-PWV) in addition to tonometry-derived carotid-femoral PWV (cf-PWV). They measured PWVs and GLS in 155 healthy controls, 75 subjects at risk of developing HF (American College of Cardiology/American Heart Association stage A-B) and 236 patients in stage C heart failure with preserved ejection fraction (HFpEF) (n = 104) or heart failure with reduced ejection fraction (HFrEF) (n = 132). They evaluated peak oxygen consumption and peripheral extraction using combined cardiopulmonary-echocardiography exercise stress.aa-PWV was obtainable in all subjects and significantly lower than cf-PWV in all subgroups (P 0.01). PWVs were directly related and increased with age (all P 0.0001). cf-PWV/GLS was similarly compromised in HFrEF (1.09 ± 0.35) and HFpEF (1.05 ± 0.21), whereas aa-PWV/GLS was more impaired in HFpEF (0.70 ± 0.10) than HFrEF (0.61 ± 0.14; P 0.01). Stage A-B had values of cf-PWV/GLS and aa-PWV/GLS (0.67 ± 0.27 and 0.48 ± 0.14, respectively) higher than controls (0.46 ± 0.11 and 0.39 ± 0.10, respectively) but lower than stage C (all P 0.01). Peak arteriovenous oxygen difference (AVOAbnormal VAC is directly correlated with greater severity of HF and worse functional capacity. HFpEF shows a worse VAC than HFrEF when expressed by aa-PWV/GLS.
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- 2022
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