Your browser doesn't support javascript.
Show: 20 | 50 | 100
Results 1 - 20 de 84
Filter
1.
Arch Cardiol Mex ; 91(Supl): 18-24, 2021.
Article in English | MEDLINE | ID: covidwho-2318143

ABSTRACT

OBJETIVO: Determinar la percepción de los médicos internos residentes (MIR) de cardiología de España sobre el efecto de la pandemia por COVID-19 en su formación y la adaptación realizada por sus servicios. MÉTODOS: Estudio de corte transversal a través de una plataforma de encuesta digital con el objetivo de conocer la opinión individual de los MIR de cardiología sobre la influencia de la pandemia en su formación. Se realiza un análisis estadístico para determinar los factores que influyeron en la percepción de la formación afectada. RESULTADOS: Participó un total de 180 MIR de las 17 comunidades autónomas (CA). Los MIR de tercer año fueron los más afectados, junto con los que rotaban en imagen cardíaca. Los residentes de las CA con una prevalencia >5 casos/1,000 habitantes fueron los que mayor probabilidad tuvieron de ser desplazados de sus servicios. CONCLUSIONES: Según la opinión de los participantes, el efecto de la pandemia por COVID-19 en su formación fue más negativa en los residentes de tercer año y los que rotaban en imagen cardíaca. OBJECTIVE: The objectives were to analyze the perception of the Cardiology Fellows in Training (FIT) of Spain about the impact of the COVID-19 pandemic on their academic training and to know the adaptative changes performed by their department. METHODS: A cross-sectional study performed through a digital survey platform for Cardiology FIT. Chi2 analysis and logistic regression were performed to determine the factors that influenced on the perception of an affected training. RESULTS: A total of 180 FIT from the 17 regions of Spain participated. Third year FIT and those rotating in cardiac imaging were the most affected with statistically significant difference. The residents of the regions with a prevalence of >5 cases/1,000 inhabitants were the most likely to be displaced from their departments. CONCLUSIONS: According to the opinion of the participants, the impact of the COVID-19 pandemic on their academic training was more negative in third year FITs and those rotating in cardiac imaging.


Subject(s)
COVID-19 , Cardiology , Cardiology/education , Cross-Sectional Studies , Humans , Internship and Residency , Pandemics , Retrospective Studies , Spain
2.
Global Health ; 19(1): 25, 2023 04 17.
Article in English | MEDLINE | ID: covidwho-2293445

ABSTRACT

BACKGROUND: Identifying common factors that affect public adherence to COVID-19 containment measures can directly inform the development of official public health communication strategies. The present international longitudinal study aimed to examine whether prosociality, together with other theoretically derived motivating factors (self-efficacy, perceived susceptibility and severity of COVID-19, perceived social support) predict the change in adherence to COVID-19 containment strategies. METHOD: In wave 1 of data collection, adults from eight geographical regions completed online surveys beginning in April 2020, and wave 2 began in June and ended in September 2020. Hypothesized predictors included prosociality, self-efficacy in following COVID-19 containment measures, perceived susceptibility to COVID-19, perceived severity of COVID-19 and perceived social support. Baseline covariates included age, sex, history of COVID-19 infection and geographical regions. Participants who reported adhering to specific containment measures, including physical distancing, avoidance of non-essential travel and hand hygiene, were classified as adherence. The dependent variable was the category of adherence, which was constructed based on changes in adherence across the survey period and included four categories: non-adherence, less adherence, greater adherence and sustained adherence (which was designated as the reference category). RESULTS: In total, 2189 adult participants (82% female, 57.2% aged 31-59 years) from East Asia (217 [9.7%]), West Asia (246 [11.2%]), North and South America (131 [6.0%]), Northern Europe (600 [27.4%]), Western Europe (322 [14.7%]), Southern Europe (433 [19.8%]), Eastern Europe (148 [6.8%]) and other regions (96 [4.4%]) were analyzed. Adjusted multinomial logistic regression analyses showed that prosociality, self-efficacy, perceived susceptibility and severity of COVID-19 were significant factors affecting adherence. Participants with greater self-efficacy at wave 1 were less likely to become non-adherence at wave 2 by 26% (adjusted odds ratio [aOR], 0.74; 95% CI, 0.71 to 0.77; P < .001), while those with greater prosociality at wave 1 were less likely to become less adherence at wave 2 by 23% (aOR, 0.77; 95% CI, 0.75 to 0.79; P = .04). CONCLUSIONS: This study provides evidence that in addition to emphasizing the potential severity of COVID-19 and the potential susceptibility to contact with the virus, fostering self-efficacy in following containment strategies and prosociality appears to be a viable public health education or communication strategy to combat COVID-19.


Subject(s)
COVID-19 , Adult , Humans , Female , Male , COVID-19/epidemiology , COVID-19/prevention & control , SARS-CoV-2 , Pandemics/prevention & control , Longitudinal Studies , Europe , Surveys and Questionnaires
3.
Eur Respir J ; 2022 Nov 17.
Article in English | MEDLINE | ID: covidwho-2278322

ABSTRACT

BACKGROUND: The primary aim of our study was to investigate the association between intubation timing and hospital mortality in critically ill patients with COVID-19-associated respiratory failure. We also analysed both the impact of such timing throughout the first four pandemic waves and the influence of prior non-invasive respiratory support on outcomes. METHODS: This is a secondary analysis of a multicentre, observational and prospective cohort study that included all consecutive patients undergoing invasive mechanical ventilation due to COVID-19 from across 58 Spanish intensive care units (ICU) participating in the CIBERESUCICOVID project. The study period was between 29 February 2020 and 31 August 2021. Early intubation was defined as that occurring within the first 24 h of intensive care unit (ICU) admission. Propensity score (PS) matching was used to achieve balance across baseline variables between the early intubation cohort and those patients who were intubated after the first 24 h of ICU admission. Differences in outcomes between early and delayed intubation were also assessed. We performed sensitivity analyses to consider a different timepoint (48 h from ICU admission) for early and delayed intubation. RESULTS: Of the 2725 patients who received invasive mechanical ventilation, a total of 614 matched patients were included in the analysis (307 for each group). In the unmatched population, there were no differences in mortality between the early and delayed groups. After PS matching, patients with delayed intubation presented higher hospital mortality (27.3% versus 37.1%, p =0.01), ICU mortality (25.7% versus 36.1%, p=0.007) and 90-day mortality (30.9% versus 40.2%, p=0.02) when compared to the early intubation group. Very similar findings were observed when we used a 48-hour timepoint for early or delayed intubation. The use of early intubation decreased after the first wave of the pandemic (72%, 49%, 46% and 45% in the first, second, third and fourth wave, respectively; first versus second, third and fourth waves p<0.001). In both the main and sensitivity analyses, hospital mortality was lower in patients receiving high-flow nasal cannula (n=294) who were intubated earlier. The subgroup of patients undergoing NIV (n=214) before intubation showed higher mortality when delayed intubation was set as that occurring after 48 h from ICU admission, but not when after 24 h. CONCLUSIONS: In patients with COVID-19 requiring invasive mechanical ventilation, delayed intubation was associated with a higher risk of hospital mortality. The use of early intubation significantly decreased throughout the course of the pandemic. Benefits of such an approach occurred more notably in patients who had received high-flow nasal cannula.

4.
Actas Esp Psiquiatr ; 51(1): 1-8, 2023 Jan.
Article in English | MEDLINE | ID: covidwho-2248227

ABSTRACT

The objective is to describe the problems related to outpatient psychogeriatric care in the context of the SARS-CoV-2 pandemic, as well as the proposed and implemented solutions for optimizing care for elderly people with mental disorders during the pandemic, that can also be applied in emerging similar situations in the future.


Subject(s)
COVID-19 , Mental Disorders , Humans , Aged , SARS-CoV-2 , Geriatric Psychiatry , Mental Disorders/epidemiology , Pandemics
5.
Int J Ophthalmol ; 16(1): 1-9, 2023.
Article in English | MEDLINE | ID: covidwho-2239868

ABSTRACT

AIM: To compare the visual perception (color and chromatic-achromatic contrast vision) of a small cohort of COVID-19 patients at the time of infection and after 6mo with that of a healthy population matched for sex and age. METHODS: A total of 25 patients (9 females, 16 males, mean age: 54±10y) with COVID-19 hospitalized in the COVID-19 Unit of the University Clinical Hospital of Valladolid were recruited for this preliminary study. Visual perception, as determined by monocular measurement of contrast sensitivity function (CSF) and color vision was assessed in each patient using the Optopad test. The results obtained were then compared with those of a sample of 16 age- and sex-matched healthy controls (5 females, 11 males, mean age: 50±6y) in which the same measurement procedure was repeated. Statistically significant differences between groups were assessed using the Mann-Whitney U test. Measurements were repeated after a minimum follow-up period of 6mo and statistically significant differences between the two time points in each group were assessed using the Wilcoxon signed rank test. RESULTS: Discrimination thresholds (color and chromatic-achromatic contrast vision) and their corresponding sensitivity, calculated as the inverse of the discrimination threshold, were evaluated. Analysis of the data revealed higher contrast threshold results (i.e., worse contrast sensitivity) in the COVID-19 group than in the control group for all spatial frequencies studied in the Optopad-CSF achromatic test and most of the spatial frequencies studied in the Optopad-CSF chromatic test for the red-green and blue-yellow mechanisms. In addition, color threshold results in the COVID-19 group were also significantly higher (i.e., worse color sensitivity) for almost all color mechanisms studied in the Optopad-Color test. At 6mo, most of the differences found between the groups were maintained despite COVID-19 recovery. CONCLUSION: The present results provide preliminary evidence that visual perception may be impaired in COVID-19, even when the infection has passed. Although further research is needed to determine the precise causes of this finding, analysis of CSF and color vision could provide valuable information on the visual impact of COVID-19.

6.
Int J Geriatr Psychiatry ; 38(1): e5878, 2023 01.
Article in English | MEDLINE | ID: covidwho-2219706

ABSTRACT

OBJECTIVES: This study aimed to determine the impact of the Covid-19 pandemic on neuropsychiatric symptoms and antipsychotic use in people with dementia living in nursing homes. METHODS: This was a comparative analysis of baseline data from two large nursing home studies, one conducted during (COVID-iWHELD study) and one prior (WHELD study) to the pandemic. It involves data from 69 and 149 nursing homes, and 1006 and 666 participants respectively. Participants were people with established dementia (score >1 on Clinical Dementia Rating Scale). Resident data included demographics, antipsychotic prescriptions and neuropsychiatric symptoms using the Neuropsychiatric Inventory Nursing Home version. Nursing home data collected were nursing home size and staffing information. RESULTS: Overall prevalence of neuropsychiatric symptoms was unchanged from pre-pandemic prevalence. Mean antipsychotic use across the sample was 32.0%, increased from 18% pre-pandemic (Fisher's exact test p < 0.0001). At a nursing home level, the medians for the low, medium and high tertiles for antipsychotic use were 7%, 20% and 59% respectively, showing a disproportionate rise in tertile three. Residents in these homes also showed a small but significant increase in agitation. CONCLUSION: There has been a significant increase in antipsychotic prescribing in nursing homes since the COVID-19 pandemic, with a disproportionate rise in one third of homes, where median prescription rates for antipsychotics were almost 60%. Strategies are urgently needed to identify these nursing homes and introduce pro-active support to bring antipsychotic prescription rates back to pre-pandemic levels.


Subject(s)
Antipsychotic Agents , COVID-19 , Dementia , Humans , Antipsychotic Agents/therapeutic use , Pandemics , Dementia/drug therapy , Dementia/epidemiology , Dementia/psychology , COVID-19/epidemiology , Nursing Homes
7.
Agron Sustain Dev ; 42(5): 84, 2022.
Article in English | MEDLINE | ID: covidwho-2048618

ABSTRACT

It has been shown that the COVID-19 pandemic affected some agricultural systems more than others, and even within geographic regions, not all farms were affected to the same extent. To build resilience of agricultural systems to future shocks, it is key to understand which farms were affected and why. In this study, we examined farmers' perceived robustness to COVID-19, a key resilience capacity. We conducted standardized farmer interviews (n = 257) in 15 case study areas across Europe, covering a large range of socio-ecological contexts and farm types. Interviews targeted perceived livelihood impacts of the COVID-19 pandemic on productivity, sales, price, labor availability, and supply chains in 2020, as well as farm(er) characteristics and farm management. Our study corroborates earlier evidence that most farms were not or only slightly affected by the first wave(s) of the pandemic in 2020, and that impacts varied widely by study region. However, a significant minority of farmers across Europe reported that the pandemic was "the worst crisis in a lifetime" (3%) or "the worst crisis in a decade" (7%). Statistical analysis showed that more specialized and intensive farms were more likely to have perceived negative impacts. From a societal perspective, this suggests that highly specialized, intensive farms face higher vulnerability to shocks that affect regional to global supply chains. Supporting farmers in the diversification of their production systems while decreasing dependence on service suppliers and supply chain actors may increase their robustness to future disruptions. Supplementary Information: The online version contains supplementary material available at 10.1007/s13593-022-00820-5.

8.
Int J Environ Res Public Health ; 20(3)2023 01 28.
Article in English | MEDLINE | ID: covidwho-2216031

ABSTRACT

(1) Background: We present the protocol of a randomized controlled trial designed to evaluate the benefit of a novel clinical decision support system for the management of patients with COVID-19. (2) Methods: The study will recruit up to 500 participants (250 cases and 250 controls). Both groups will receive the conventional telephone follow-up protocol by primary care and will also be provided with access to a mobile application, in which they will be able to report their symptoms three times a day. In addition, patients in the active group will receive a wearable smartwatch and a pulse oximeter at home for real-time monitoring. The measured data will be visualized by primary care and emergency health service professionals, allowing them to detect in real time the progression and complications of the disease in order to promote early therapeutic interventions based on their clinical judgement. (3) Results: Ethical approval for this study was obtained from the Drug Research Ethics Committee of the Valladolid East Health Area (CASVE-NM-21-516). The results obtained from this study will form part of the thesis of two PhD students and will be disseminated through publication in a peer-reviewed journal. (4) Conclusions: The implementation of this telemonitoring system can be extrapolated to patients with other similar diseases, such as chronic diseases, with a high prevalence and need for close monitoring.


Subject(s)
COVID-19 , Decision Support Systems, Clinical , Humans , SARS-CoV-2 , Quarantine , Patients , Randomized Controlled Trials as Topic
9.
J Mol Biol ; 435(5): 167966, 2023 03 01.
Article in English | MEDLINE | ID: covidwho-2180733

ABSTRACT

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) envelope (E) protein forms a pentameric ion channel in the lipid membrane of the endoplasmic reticulum Golgi intermediate compartment (ERGIC) of the infected cell. The cytoplasmic domain of E interacts with host proteins to cause virus pathogenicity and may also mediate virus assembly and budding. To understand the structural basis of these functions, here we investigate the conformation and dynamics of an E protein construct (residues 8-65) that encompasses the transmembrane domain and the majority of the cytoplasmic domain using solid-state NMR. 13C and 15N chemical shifts indicate that the cytoplasmic domain adopts a ß-sheet-rich conformation that contains three ß-strands separated by turns. The five subunits associate into an umbrella-shaped bundle that is attached to the transmembrane helices by a disordered loop. Water-edited NMR spectra indicate that the third ß-strand at the C terminus of the protein is well hydrated, indicating that it is at the surface of the ß-bundle. The structure of the cytoplasmic domain cannot be uniquely determined from the inter-residue correlations obtained here due to ambiguities in distinguishing intermolecular and intramolecular contacts for a compact pentameric assembly of this small domain. Instead, we present four structural topologies that are consistent with the measured inter-residue contacts. These data indicate that the cytoplasmic domain of the SARS-CoV-2 E protein has a strong propensity to adopt ß-sheet conformations when the protein is present at high concentrations in lipid bilayers. The equilibrium between the ß-strand conformation and the previously reported α-helical conformation may underlie the multiple functions of E in the host cell and in the virion.


Subject(s)
SARS-CoV-2 , Humans , Lipid Bilayers/chemistry , Models, Molecular , Protein Conformation, beta-Strand , SARS-CoV-2/chemistry
10.
Sustainability ; 15(2):1075, 2023.
Article in English | MDPI | ID: covidwho-2166914

ABSTRACT

Air pollution severely compromises children's health and development, causing physical and mental implications. We have explored the use of site-specific green infrastructure (green barriers) in a school playground in Sheffield, UK, as an air-pollution-mitigation measure to improve children's environment. The study assessed air quality pre-post intervention and compared it with two control sites. Nitrogen dioxide (NO2) and particulate matter <2.5 µm in size (PM2.5) concentration change was assessed via three methods: (1) continuous monitoring with fixed devices (de-seasonalised);(2) monthly monitoring with diffusion tubes (spatial analysis);(3) intermittent monitoring with a mobile device at children's height (spatial analysis). De-seasonalised results indicate a reduction of 13% for NO2 and of 2% for PM2.5 in the school playground after two years of plant establishment. Further reductions in NO2 levels (25%) were observed during an exceptionally low mobility period (first COVID-19 lockdown);this is contrary to PM2.5 levels, which increased. Additionally, particles captured by a green barrier plant, Hedera helix 'Woerner', were observed and analysed using SEM/EDX techniques. Particle elemental analysis suggested natural and potential anthropogenic origins, potentially signalling vehicle traffic. Overall, green barriers are a valid complementary tool to improve school air quality, with quantifiable and significant air pollution changes even in our space-constrained site.

11.
Endocrinologia, diabetes y nutricion ; 2022.
Article in English | EuropePMC | ID: covidwho-2147624

ABSTRACT

Introduction ß-pancreatic cells are susceptible to SARS-CoV-2 infection and replication;this could lead to infection-related diabetes or precipitate the onset of type 1 diabetes. This study aimed to determine the severity at diagnosis, analyzing clinical and epidemiological features at debut in children under 16 years of age in the context of the SARS-CoV-2 pandemic. Material and methods A retrospective observational multicenter study was carried out in 7 hospitals of the public health network located in the south of our community. The severity at debut is compared with that of the two previous years (2018 and 2019). The level of statistical significance is set at p < 0.05. Results In 2020, 61 patients debuted at the 7 hospital centres. The mean age was 10.1 years (SD: 2.6), 50.8% older than 10 years. The clinical profile at diagnosis was ketoacidosis in 52.5% compared to 39.5% and 26.5% in the previous two years (p < 0.01). The mean pH (7.24 vs 7.30/7.30) and excess of bases (−11.9 vs −7.43/−7.9) was lower than in the previous two years, and the glycated haemoglobin higher (11.9 vs 11/10.6), p < 0.05. At least 10% of the patients had a positive history of SARS-CoV-2 infection. Conclusions There has been an increase in the frequency of diabetic ketoacidosis in type 1 diabetes onset during the first year of the COVID-19 pandemic.

12.
Endocrinol Diabetes Nutr (Engl Ed) ; 2022 Dec 01.
Article in English | MEDLINE | ID: covidwho-2130735

ABSTRACT

INTRODUCTION: ß-pancreatic cells are susceptible to SARS-CoV-2 infection and replication; this could lead to infection-related diabetes or precipitate the onset of type 1 diabetes. This study aimed to determine the severity at diagnosis, analyzing clinical and epidemiological features at debut in children under 16 years of age in the context of the SARS-CoV-2 pandemic. MATERIAL AND METHODS: A retrospective observational multicenter study was carried out in 7 hospitals of the public health network located in the south of our community. The severity at debut is compared with that of the two previous years (2018 and 2019). The level of statistical significance is set at p<0.05. RESULTS: In 2020, 61 patients debuted at the 7 hospital centres. The mean age was 10.1 years (SD: 2.6), 50.8% older than 10 years. The clinical profile at diagnosis was ketoacidosis in 52.5% compared to 39.5% and 26.5% in the previous two years (p<0.01). The mean pH (7.24 vs 7.30/7.30) and excess of bases (-11.9 vs -7.43/-7.9) was lower than in the previous two years, and the glycated haemoglobin higher (11.9 vs 11/10.6), p<0.05. At least 10% of the patients had a positive history of SARS-CoV-2 infection. CONCLUSIONS: There has been an increase in the frequency of diabetic ketoacidosis in type 1 diabetes onset during the first year of the COVID-19 pandemic.

13.
Virol J ; 19(1): 193, 2022 11 21.
Article in English | MEDLINE | ID: covidwho-2139347

ABSTRACT

A global pandemic is underway caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The SARS-CoV-2 genome, like its predecessor SARS-CoV, contains open reading frames that encode accessory proteins involved in virus-host interactions active during infection and which likely contribute to pathogenesis. One of these accessory proteins is 7b, with only 44 (SARS-CoV) and 43 (SARS-CoV-2) residues. It has one predicted transmembrane domain fully conserved, which suggests a functional role, whereas most variability is contained in the predicted cytoplasmic C-terminus. In SARS-CoV, 7b protein is expressed in infected cells, and the transmembrane domain was necessary and sufficient for Golgi localization. Also, anti-p7b antibodies have been found in the sera of SARS-CoV convalescent patients. In the present study, we have investigated the hypothesis that SARS-2 7b protein forms oligomers with ion channel activity. We show that in both SARS viruses 7b is almost completely α-helical and has a single transmembrane domain. In SDS, 7b forms various oligomers, from monomers to tetramers, but only monomers when exposed to reductants. Combination of SDS gel electrophoresis and analytical ultracentrifugation (AUC) in both equilibrium and velocity modes suggests a dimer-tetramer equilibrium, but a monomer-dimer-tetramer equilibrium in the presence of reductant. This data suggests that although disulfide-linked dimers may be present, they are not essential to form tetramers. Inclusion of pentamers or higher oligomers in the SARS-2 7b model were detrimental to fit quality. Preliminary models of this association was generated with AlphaFold2, and two alternative models were exposed to a molecular dynamics simulation in presence of a model lipid membrane. However, neither of the two models provided any evident pathway for ions. To confirm this, SARS-2 p7b was studied using Planar Bilayer Electrophysiology. Addition of p7b to model membranes produced occasional membrane permeabilization, but this was not consistent with bona fide ion channels made of a tetrameric assembly of α-helices.


Subject(s)
COVID-19 , SARS-CoV-2 , Humans , Detergents , Open Reading Frames , Cytoplasm
14.
Int J Environ Res Public Health ; 19(23)2022 Dec 04.
Article in English | MEDLINE | ID: covidwho-2143189

ABSTRACT

Body Expression (BE) has been defined in the past few decades as a discipline within Physical Education (PE) with very particular characteristics and a strong emotional component. In this study, a BE program was applied with university Physical Activity and Sports Sciences (PASS) students from six consecutive academic years: three prior to and three during the COVID-19 pandemic. A pre-post design was used to determine how the BE program affected the university students' self-concept (SC). Thus, a questionnaire with a multidimensional approach to this construct was administered, with dimensions closely related to the BE program characteristics. The results revealed significant improvements in the final SC, compared to the initial SC. The men reported lower SC values than the women before the program's implementation, but higher at the end. Therefore, the change was greater in the men, so the program may have had an equalizing effect between the groups. It was also verified that the pandemic had particularly affected the women.


Subject(s)
COVID-19 , Students , Male , Humans , Female , Students/psychology , Pandemics , COVID-19/epidemiology , Universities , Self Concept
15.
Berg, Hannes, Wirtz Martin, Maria A.; Altincekic, Nadide, Islam, Alshamleh, Bains, Jasleen Kaur, Blechar, Julius, Ceylan, Betül, de Jesus, Vanessa, Karthikeyan, Dhamotharan, Fuks, Christin, Gande, Santosh L.; Hargittay, Bruno, Hohmann, Katharina F.; Hutchison, Marie T.; Korn, Sophie Marianne, Krishnathas, Robin, Kutz, Felicitas, Linhard, Verena, Matzel, Tobias, Meiser, Nathalie, Niesteruk, Anna, Pyper, Dennis J.; Schulte, Linda, Trucks, Sven, Azzaoui, Kamal, Blommers, Marcel J. J.; Gadiya, Yojana, Karki, Reagon, Zaliani, Andrea, Gribbon, Philip, Marcius da Silva, Almeida, Cristiane Dinis, Anobom, Bula, Anna L.; Bütikofer, Matthias, Caruso, Ícaro Putinhon, Felli, Isabella Caterina, Da Poian, Andrea T.; Gisele Cardoso de, Amorim, Fourkiotis, Nikolaos K.; Gallo, Angelo, Ghosh, Dhiman, Francisco, Gomes‐Neto, Gorbatyuk, Oksana, Hao, Bing, Kurauskas, Vilius, Lecoq, Lauriane, Li, Yunfeng, Nathane Cunha, Mebus‐Antunes, Mompeán, Miguel, Thais Cristtina, Neves‐Martins, Martí, Ninot‐Pedrosa, Pinheiro, Anderson S.; Pontoriero, Letizia, Pustovalova, Yulia, Riek, Roland, Robertson, Angus J.; Abi Saad, Marie Jose, Treviño, Miguel Á, Tsika, Aikaterini C.; Almeida, Fabio C. L.; Bax, Ad, Katherine, Henzler‐Wildman, Hoch, Jeffrey C.; Jaudzems, Kristaps, Laurents, Douglas V.; Orts, Julien, Pierattelli, Roberta, Spyroulias, Georgios A.; Elke, Duchardt‐Ferner, Ferner, Jan, Fürtig, Boris, Hengesbach, Martin, Löhr, Frank, Qureshi, Nusrat, Richter, Christian, Saxena, Krishna, Schlundt, Andreas, Sreeramulu, Sridhar, Wacker, Anna, Weigand, Julia E.; Julia, Wirmer‐Bartoschek, Wöhnert, Jens, Schwalbe, Harald.
Angewandte Chemie ; 134(46), 2022.
Article in English | ProQuest Central | ID: covidwho-2103465

ABSTRACT

SARS‐CoV‐2 (SCoV2) and its variants of concern pose serious challenges to the public health. The variants increased challenges to vaccines, thus necessitating for development of new intervention strategies including anti‐virals. Within the international Covid19‐NMR consortium, we have identified binders targeting the RNA genome of SCoV2. We established protocols for the production and NMR characterization of more than 80 % of all SCoV2 proteins. Here, we performed an NMR screening using a fragment library for binding to 25 SCoV2 proteins and identified hits also against previously unexplored SCoV2 proteins. Computational mapping was used to predict binding sites and identify functional moieties (chemotypes) of the ligands occupying these pockets. Striking consensus was observed between NMR‐detected binding sites of the main protease and the computational procedure. Our investigation provides novel structural and chemical space for structure‐based drug design against the SCoV2 proteome.

16.
ChemistrySelect ; 7(37): e202202410, 2022 Oct 07.
Article in English | MEDLINE | ID: covidwho-2059654

ABSTRACT

The extraordinary occurrence of COVID-19 by the fast expansion of viral infections has propelled particular interest in developing novel antiviral and virucidal agents to guarantee personal security. The main objective of this work is to propose novel formulations able to optimize the use of personal protection elements. In recent years, chitosan (CH) has attracted attention for being an interesting multifunctional, biodegradable, non-antigenic, non-toxic, and biocompatible natural polymer with antimicrobial properties. In this work, formulations based on a CH matrix containing silver, and Copper based nanoparticles have been developed. The novelty of this proposal is that almost liquid formulations have been reached, possessing verified properties to inhibit evolved virus such as herpes simplex type 1 (HSV-1) and bovine betacoronavirus (BCoV), the latter belonging to the same family of the well-known the well-known SARS-CoV-2. Besides antibacterial bioactivity; as well as the ability of these formulations to be easily sprayed on various surfaces, including conventional face masks, have been verified and discussed. The results presented in this contribution provide strong evidence on CH films as an ideal biosafe surface-protective for several daily used materials including the conventional face masks.

17.
Angew Chem Int Ed Engl ; 61(46): e202205858, 2022 Nov 14.
Article in English | MEDLINE | ID: covidwho-2034712

ABSTRACT

SARS-CoV-2 (SCoV2) and its variants of concern pose serious challenges to the public health. The variants increased challenges to vaccines, thus necessitating for development of new intervention strategies including anti-virals. Within the international Covid19-NMR consortium, we have identified binders targeting the RNA genome of SCoV2. We established protocols for the production and NMR characterization of more than 80 % of all SCoV2 proteins. Here, we performed an NMR screening using a fragment library for binding to 25 SCoV2 proteins and identified hits also against previously unexplored SCoV2 proteins. Computational mapping was used to predict binding sites and identify functional moieties (chemotypes) of the ligands occupying these pockets. Striking consensus was observed between NMR-detected binding sites of the main protease and the computational procedure. Our investigation provides novel structural and chemical space for structure-based drug design against the SCoV2 proteome.


Subject(s)
COVID-19 Drug Treatment , SARS-CoV-2 , Humans , Proteome , Ligands , Drug Design
18.
Agronomy for sustainable development ; 42(5), 2022.
Article in English | EuropePMC | ID: covidwho-1998838

ABSTRACT

It has been shown that the COVID-19 pandemic affected some agricultural systems more than others, and even within geographic regions, not all farms were affected to the same extent. To build resilience of agricultural systems to future shocks, it is key to understand which farms were affected and why. In this study, we examined farmers’ perceived robustness to COVID-19, a key resilience capacity. We conducted standardized farmer interviews (n = 257) in 15 case study areas across Europe, covering a large range of socio-ecological contexts and farm types. Interviews targeted perceived livelihood impacts of the COVID-19 pandemic on productivity, sales, price, labor availability, and supply chains in 2020, as well as farm(er) characteristics and farm management. Our study corroborates earlier evidence that most farms were not or only slightly affected by the first wave(s) of the pandemic in 2020, and that impacts varied widely by study region. However, a significant minority of farmers across Europe reported that the pandemic was “the worst crisis in a lifetime” (3%) or “the worst crisis in a decade” (7%). Statistical analysis showed that more specialized and intensive farms were more likely to have perceived negative impacts. From a societal perspective, this suggests that highly specialized, intensive farms face higher vulnerability to shocks that affect regional to global supply chains. Supporting farmers in the diversification of their production systems while decreasing dependence on service suppliers and supply chain actors may increase their robustness to future disruptions. Supplementary Information The online version contains supplementary material available at 10.1007/s13593-022-00820-5.

19.
Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association ; 37(Suppl 3), 2022.
Article in English | EuropePMC | ID: covidwho-1998317

ABSTRACT

BACKGROUND AND AIMS Acute kidney injury (AKI) has been described as a frequent complication in patients with COVID-19. The incidence of AKI is estimated to be around 5%–80% depending on the series;however, data characterizing the type of AKI and the evolution of renal function parameters in the medium-long term are still limited. METHOD Based on the initial AKI-COVID Registry, we developed an extended registry where we registered retrospectively new variables that included clinical and demographic characteristics, infection severity parameters and data related to AKI (ethology, KDIGO classification, need of renal replacement therapy, analytic values: baseline creatinine, maximum creatinine during admission, creatinine at discharge or death, creatinine at 1 month after hospitalization and urinary parameters). Recovery of kidney function was defined as difference in at discharge or posthospitalization creatinine < 0.3 mg/dL with respect basal creatinine. RESULTS Our analysis included 196 patients: 74% male, mean age 66 + 13 years;65% hypertensive, 33% diabetic and 22% chronic kidney disease. According to the KDIGO classification: 66% AKI KDIGO3, 17% KDIGO2 and 15% KDIGO1. Creatinine values ​​are summarized in Table 1. We found significant differences in the baseline/high creatinine differential;these differences were lost after hospitalization.Table 1. Analytical evolution of the patients included in the study. ANOVA test for independent samples The main types of AKI were prerenal (35%) and acute tubular necrosis secondary to sepsis (ATN) (53%). 89% of patients with ATN presented AKI KDIGO 3, compared with 57% in the prerenal group (P < .001). Patients with prerenal AKI had greater comorbidity. On the other hand, patients with ATN AKI developed more serious COVID-19 infection: higher percentage of severe pneumonia, admission to the intensive care unit and need for orotracheal intubation. The analytical parameters were more extreme in patients with ATN AKI, except for creatinine and urea upon admission, which were higher in the prerenal AKI group. A total of 89 patients died during the study;65% of ATN AKI patients versus 31% of prerenal-AKI patients (P < .001). The ATN was a mortality risk factor, whit a hazard ratio 2.74 [95% confidence interval (95% CI )1.29–5.7] (P = .008) compared with the prerenal AKI. CONCLUSION AKI in hospitalized patients with COVID19 presented with two different clinical patterns. Prerenal AKI more frequently affected older, more comorbid patients, and with a mild COVID19 infection. The NTA AKI affected younger patients, with criteria of severity of infection and multiplying mortality almost three times. In analytical control 1-month post-hospitalization, most of the patients recovered their kidney function. Although the implications of AKI associated with COVID-19 in the development of chronic kidney disease are still unclear, our data suggest that most patients will recover kidney function in a medium term.

20.
Pediatr Pulmonol ; 57(1): 253-263, 2022 01.
Article in English | MEDLINE | ID: covidwho-1966091

ABSTRACT

OBJECTIVES: To describe the etiology of community-acquired pneumonia (CAP) in hospitalized children in Spain and analyze the predictors of the etiology. HYPOTHESIS: The different etiological groups of pediatric CAP are associated with different clinical, radiographic, and analytical data. DESIGN: Observational, multicenter, and prospective study. PATIENT SELECTION: This study included children aged 1 month to 17 years with CAP, who were hospitalized between April 2012 and May 2019. METHODS: An extensive microbiological workup was performed. The clinical, radiographic, and analytical parameters were analyzed for three etiological groups. RESULTS: Among the 495 children included, at least one causative pathogen was identified in 262 (52.9%): pathogenic viruses in 155/262 (59.2%); atypical bacteria (AB), mainly Mycoplasma pneumonia, in 84/262 (32.1%); and typical bacteria (TyB) in 40/262 (15.3%). Consolidation was observed in 89/138 (64.5%) patients with viral CAP, 74/84 (88.1%) with CAP caused by AB, and 40/40 (100%) with CAP caused by TyB. Para-pneumonic pleural effusion (PPE) was observed in 112/495 (22.6%) patients, of which 61/112 (54.5%) presented a likely causative pathogen: viruses in 12/61 (19.7%); AB in 23/61 (37.7%); and TyB in 26/61 (42.6%). Viral etiology was significantly frequent in young patients and in those with low oxygen saturation, wheezing, no consolidation, and high lymphocyte counts. CAP patients with AB as the etiological agent had a significantly longer and less serious course as compared to those with other causative pathogens. CONCLUSIONS: Viruses and M. pneumoniae are the main causes of pediatric CAP in Spain. Wheezing, young age, and no consolidation on radiographs are indicative of viral etiology. Viruses and AB can also cause PPE. Since only a few cases can be directly attributed to TyB, the indications for antibiotics must be carefully considered in each patient.


Subject(s)
Community-Acquired Infections , Pneumonia, Mycoplasma , Viruses , Child , Community-Acquired Infections/epidemiology , Humans , Mycoplasma pneumoniae , Oxygen Saturation , Pneumonia, Mycoplasma/complications , Pneumonia, Mycoplasma/epidemiology , Prospective Studies , Spain/epidemiology
SELECTION OF CITATIONS
SEARCH DETAIL