bluuebunny/crossref_metadata_2025_split huggingface dataset:
Characteristics and outcomes of Acute Respiratory Distress Syndrome related to COVID-19 in Belgian and French Intensive Care Units according to antiviral strategies. The COVADIS multicenter observational study
Authors: Grimaldi David , Aissaoui Nadia , Blonz Gauthier , Carbutti Giuseppe , Courcelle Romain , Gaudry Stephane , D’hondt Alain , Higny Julien , Horlait Geoffrey , Hraiech Sami , Lefebvre Laurent , Lejeune Francois , Ly Andre , Piagnerelli Michael , Sauneuf Bertrand , Serck Nicolas , Soumagne Thibaud , Szychowiak Piotr , Textoris Julien , Vandenbunder Benoit , Vinsonneau Christophe , Lascarrou Jean-Baptiste ,   for the COVADIS study group
Published: July 2020

AbstractBackgroundLimited data are available for antiviral therapy efficacy especially for the most severe patients under mechanical ventilation suffering from Covid-19 related Acute Respiratory Distress Syndrome (ARDS).MethodsObservational multicenter cohort of patients with moderate to severe Covid-19 ARDS, comparing antiviral strategies (none, hydroxychloroquine (HCQ), lopinavir/ritonavir (L/R), others (combination or remdesivir). The primary end-point was the day-28 ventilator free days (VFD), patients which died before d28 were considered as having 0 VFD. The variable was dichotomized in patients still ventilated or dead at day 28 vs patients being extubated and alive at day 28 (VFD = or >0).ResultsWe analyzed 376 patients (80 with standard of care (SOC), 49 treated with L/R, 197 with HCQ, and 50 others). The median number of d28-VFD was 0 (IQR 0-13) and was different across the different groups (P=0.01), the SOC patients having the highest d28-VFD. A multivariate logistic regression including antiviral strategies, showed that age (OR 0.95 CI95%:0.93-0.98), male gender (OR 0.53 CI95%:0.31-0.93), Charlson score (OR 0.85 CI95%:0.73-0.99) and plateau pressure (OR 0.94 CI95%:0.88-0.99) were associated with having 0 d28-VFD whereas P/F ratio (OR 1.005 CI95%:1.001-1.010) was associated with having ≥1 d28-VFD (ie. being extubated and alive). Acute kidney injury (AKI) was frequent (64%), its incidence was different across the patients’ groups (P=0.01). In a post-hoc logistic multivariate regression apart from demographics characteristics and comorbidities, the use of L/R (administered to 81 of 376 patients was associated with occurrence of AKI (OR 2.07 CI95%:1.17-3.66) and need for renal replacement therapy (RRT).ConclusionIn this observational study of moderate to severe Covid-19 ARDS patients, we did not observed a benefit of treating patients with any specific antiviral treatment. We observed an association between L/R treatment and occurrence of AKI and need for RRT.Take home messageAny specific COVID-19 antiviral treatment is associated with higher ventilator free days at day 28 as compared to no antiviral treatment for patient in ICU under invasive mechanical ventilation. Lopinavir/ritonavir is associated with an increased risk of acute kidney injury.TweetCOVID-19: Insights from ARDS cohort: no signal of efficacy for antiviral treatments. Lopinavir/ritonavir may be associated with AKI and need for RRT.
Prevalence of HIV in patients hospitalized for COVID-19 and associated outcomes: a systematic review and meta-analysis
Authors: Ssentongo Paddy , Heilbrunn Emily S. , Ssentongo Anna E. , Advani Shailesh , Chinchilli Vernon M. , Nunez Jonathan J. , Du Ping 
Published: July 2020

AbstractObjectiveTo conduct a systematic review and meta-analysis of the prevalence of HIV in patients hospitalized for COVID-19 and delineating clinical outcomes including mortality.Design/MethodsMEDLINE, SCOPUS, OVID, and Cochrane Library databases and medrxiv.org were searched from January 1st, 2020, to June 15th, 2020. Data were extracted from studies reporting the prevalence of HIV among hospitalized COVID-19 patients and their clinical outcomes.Analyses were performed using random-effects models on log-transformed proportions and risk ratio estimates, and heterogeneity was quantified.ResultsA total of 144,795 hospitalized COVID-19 patients were identified from 14 studies in North America, Europe, and Asia. Median age was 55 years, and 66% were male. The pooled prevalence of HIV in COVID-19 patients was 1.22% [95% confidence interval (CI): 0.61%-2.43%)] translating to a 2-fold increase compared to the respective local-level pooled HIV prevalence in the general population of 0.65% (95% CI: 0.48%-0.89%). When stratified by country, the pooled HIV prevalence among COVID-19 patients in United States (1.43%, 95% CI: 0.98%–2.07%) was significantly higher compared to Spain (0.26%, 95% CI: 0.23%-0.29%) but was not different from China (0.99%, 95% CI: 0.25%-3.85%). The pooled mortality rate in HIV-positive patients hospitalized for COVID-19 was 14.1% (95% CI: 5.78%-30.50%) and was substantially higher in the United States compared to other countries.ConclusionsThe prevalence of HIV among COVID-19 patients appeared higher than the general population, suggesting a greater susceptibility to COVID-19 for PLWH. The pooled mortality rate is high, but the rates vary significantly across countries.Suggested ReviewersNelson Sewankambo, MD, PhDMakerere University College of Health SciencesOpposed Reviewers
Echocardiographic and Laboratory Findings in Coronary Slow Flow Phenomenon: cross-sectional study and review
Authors: Mohammadzad Mir Hosein Seyyed , Gardeshkhah Salar , Khademvatani Kamal , Sedokani Amin 
Published: July 2020

AbstractBackground and aimsCoronary Slow flow is a phenomenon known as slow contrast flow that injected into the coronary arteries, without epicardial coronary arteries obstruction. The etiology of this disease is unknown. Endothelial dysfunction, known as a major cause of Coronary Slow flow syndrome (CSF).MethodsThis study was cross-sectional (descriptive-analytic), which was performed on patients admitted to Seyedoshohada Heart Center, during one year (2018-2019). Considering the inclusion and exclusion criteria, patients were divided into two groups of normal coronary arteries (NECA, as the control group) and with the Coronary slow-flow (CSF).ResultsIn the present study, 124 patients were studied, 67.9% in the coronary slow flow group and 39.4% in the control group were men (p=0.001). In the coronary slow flow group, the mean age of patients was 52.18 ± 12.55 years and in the control group, the mean age was 51.77 ± 10.36 years (p=0.18). Mean BMI was significantly higher in the coronary slow flow group than the control group (p <0.05). The smoking, hypertension, and mean of Lymphocyte, Hb, Hct, Plt, MPV, RDW, BUN, FBS, TG, TC, LDL was significantly higher coronary slow flow group. Also, in echocardiography, the mean E wave, E/A ratio was significantly lower in the coronary slow flow group. The GLS was also significantly lower in the control group (p=0.01). LAD was the most common type of coronaries that involved with a slow flow.ConclusionThe results of this study showed that there was a significant increase in the rate of coronary slow flow in men, smokers, high BMI, and hypertensive patients. Also, platelet count, MPV, LDL, FBS, and some laboratory variables were high in patients with CSF. Mild diastolic dysfunction and low GLS were observed in this group of patients.
Polyp bailout and reattachment of the abundant Caribbean octocoral Eunicea flexuosa
Authors: Wells Christopher D. , Tonra Kaitlyn J. 
Published: July 2020

AbstractAnthozoans exhibit great plasticity in their responses to stressful conditions, including decreasing individual size, detaching from the substratum and relocating, and releasing endosymbiotic microalgae. Another response to stress used by some colonial anthozoans is polyp bailout, in which the coenenchyme breaks down and individual polyps detach from the colony. We observed polyp bailout in the common Caribbean gorgonian Eunicea flexuosa after eight hours of aerial exposure. After nine days, 28% of bailed-out polyps reattached, although none opened to resume feeding. Polyp bailout is a costly and high-risk escape response, but reattachment indicates that this can be a genet-saving behavior in cases where whole-colony mortality is likely. While it has been described in several species of scleractinians and two octocorals, we still do not know how widespread this behavior is in anthozoans.
Implementing a Negative Pressure Isolation Space within a Skilled Nursing Facility to Control SARS-CoV-2 Transmission
Authors: Miller Shelly , Mukherjee Debanjan , Wilson Joseph , Clements Nicholas , Steiner Cedric 
Published: July 2020

AbstractBackgroundIsolation space must be expanded during pandemics involving airborne transmission. Little to no work has been done to establish optimal design strategies and implementation plans to ease surge capacity and expand isolation capacity over long periods in congregate living facilities. The COVID-19 pandemic has an airborne transmission component and requires isolation, which is difficult to accomplish in skilled nursing facilities.PurposeIn this study we designed, implemented, and validated an isolation space at a skilled nursing facility in Lancaster, PA. The overall goal was to minimize disease transmission between residents and staff within the facility.Basic ProceduresWe created an isolation space by modifying an existing HVAC system of the SNF. We measured pressure on-site and performed computational fluid dynamics and Lagrangian particle-based modeling to test containment and possible transmission extent given the isolation space is considered negative rather than individual rooms.Main FindingsPressure data shows the isolation space maintained an average hourly value of (standard deviation) -2.3 Pa (0.12 Pa) pressure differential between it and the external hallway connected to the rest of the facility. No transmission of SARS-CoV-2 between residents isolated to the space occurred, nor did any transmission to the staff or other residents occur. The isolation space was successfully implemented and, as of writing, continues to be operational through the pandemic.HighlightsNegative pressure isolation space is an effective method to meet needed surge capacity during the COVID-19 pandemic and future pandemicsPlanning for how and where to rapidly create a negative pressure isolation space is needed in congregate living areas such as skilled nursing facilitiesThis demonstration shows the feasibility of using low-cost and in-house systems to quickly create negative pressure within a skilled nursing facility hallway and to maintain these conditions, minimizing disease transmission between residents and staff
Impact of opioid agonists on mental health in substitution treatment for opioid use disorder: A systematic review and Bayesian network meta-analysis of randomized clinical trials
Authors: Moazen-Zadeh Ehsan , Ziafat Kimia , Yazdani Kiana , Mamdouh Mostafa , Wong James , Modabbernia Amirhossein , Blanken Peter , Verthein Uwe , Schütz Christian G. , Jang Kerry , Akhondzadeh Shahin , Krausz R. Michael 
Published: July 2020

AbstractObjectiveThere is a dearth of high-quality systematic evidence on the impact of opioid substitution medications on mental health. We compared mental health outcomes between opioid medications and placebo/waitlist, and between different opioids.MethodsThis systematic review and meta-analysis of randomized clinical trials (RCTs) was pre-registered at PROSPERO (CRD42018109375). Embase, MEDLINE, PsychInfo, CINAHL Complete, and Web of Science Core Collection were searched from inception to May 2020. RCTs were included if they compared opioid agonists with each other or with a placebo/waitlist in substitution treatment of patients with opioid use disorder, and reported at least one mental health outcome on a span of more than 1-month post baseline. Studies with psychiatric care, adjunct psychotropic medications, or unbalanced psychosocial services were excluded. Primary outcomes were comparison of depressive symptoms and overall mental health between opioids and placebo/waitlist. Random effects model was used for all the meta-analysis.ResultsNineteen studies were included in the narrative synthesis and 15 in the quantitative synthesis. Hydromorphone, diacetylmorphine (DAM), methadone, slow-release oral morphine, buprenorphine, and placebo/waitlist were among the included interventions. Based on network meta-analysis for primary outcomes, buprenorphine (SMD (CI95%)= −0.61 (−1.20, −0.11)), DAM (−1.40 (−2.70, −0.23)), and methadone (−1.20 (−2.30, −0.11)) were superior to waitlist/placebo on overall mental health. Further direct pairwise meta-analysis indicated that overall mental health improved more in DAM compared to methadone (−0.23 (−0.34, −0.13)).ConclusionsIt appears that opioid medications improve mental health independent of psychosocial services. Potential contribution of other factors needs to be further investigated.
Nanoscale Organization of FasL on DNA Origami as a Versatile Platform to Tune Apoptosis Signaling in Cells
Authors: Berger Ricarda M. L. , Weck Johann M. , Kempe Simon M. , Liedl Tim , Rädler Joachim O. , Monzel Cornelia , Heuer-Jungemann Amelie 
Published: July 2020

AbstractNanoscale probes with fine-tunable properties are of key interest in cell biology and nanomedicine to elucidate and eventually control signaling processes in cells. A critical, still challenging issue is to conjugate these probes with molecules in a number- and spatially-controlled manner. Here, DNA origami-based nanoagents as nanometer precise scaffolds presenting Fas ligand (FasL) in well-defined arrangements to cells are reported. These nanoagents activate receptor molecules in the plasma membrane initiating apoptosis signaling in cells. Signaling for apoptosis depends sensitively on FasL geometry: fastest time-to-death kinetics are obtained for FasL nanoagents representing predicted structure models of hexagonal receptor ordering with 10 nm inter-molecular spacing. Slower kinetics are observed for one to two FasL on DNA origami or FasL coupled with higher flexibility. Nanoagents with FasL arranged in hexagons with small (5 nm) and large (30 nm) spacing impede signal transduction. Moreover, for predicted hexagonal FasL nanoagents, signaling efficiency is faster and 100× higher compared to naturally occurring soluble FasL. Incubation of the FasL-origami nanoagent in solution exhibited an EC50 value of only 90 pM. These studies present DNA origami as versatile signaling platforms to probe the significance of molecular number and nanoscale ordering for signal initiation in cells.
On the diversity of chemical power supply as a determinant of biological diversity
Authors: Diego David , Hannisdal Bjarte , Dahle Håkon 
Published: July 2020

AbstractUnderstanding how environmental factors shape biological communities is a fundamental problem in microbial ecology. Patterns of microbial diversity have been characterized across a wide range of different environmental settings, but the mechanisms generating these patterns remain poorly understood. Here, we use mathematical modelling to investigate fundamental connections between chemical power supply to a system and its biological diversity and community structure. We reveal a strong mechanistic coupling between biological diversity and the diversity of chemical power supply, but also find that different properties of power supply, such as substrate fluxes and flow and Gibbs energies of reactions, affect community structure in fundamentally different ways. Moreover, we show how simple connections between power supply and growth can give rise to complex patterns of biodiversity across physicochemical gradients, such as pH gradients. Our findings demonstrate the importance of taking into account energy fluxes in order to reveal fundamental connections between community structure and environmental variability, and to obtain a better understanding of microbial population dynamics and diversity in natural environments.
Combined multi-modal assessment of glaucomatous damage with electroretinography and optical coherence tomography/angiography
Authors: Al-Nosairy Khaldoon O. , Prabhakaran Gokulraj , Pappelis Konstantinos , Thieme Hagen , Hoffmann Michael B. 
Published: July 2020

AbstractPurposeTo compare the diagnostic performance and to evaluate the interrelationship of electroretinographical and structural and vascular measures in glaucoma.MethodsFor 14 eyes of 14 healthy controls and 15 eyes of 12 patients with glaucoma ranging from preperimetric to advanced stages OCT, OCT-A and electrophysiological measures [multifocal photopic negative response ratio (mfPhNR) and steady state pattern electroretinogram (ssPERG)] were applied to assess changes in retinal structure, microvasculature, and function, respectively. The diagnostic performance was assessed via area-under-curve (AUC) measures obtained from ROC analyses. The interrelation of the different measures was assessed with correlation analyses.ResultsmfPhNR and ssPERG amplitudes, parafoveal (pfVD) and peripapillary vessel density (pVD), macular ganglion cell inner plexiform layer thickness (mGCIPL) and peripapillary retinal nerve fibre layer thickness (pRNFL) were significantly reduced in glaucoma. The AUC for mfPhNR was highest among diagnostic modalities (AUC: 0.88, 95%-CI: 0.75-1.0, P< 0.001), albeit not statistically different from that for macular (mGCIPL: 0.76, 0.58-0.94, P< 0.05; pfVD: 0.81, .65-.97, P< 0.01) or peripapillary imaging (pRNFL: 0.85, 0.70-1.0, P< 0.01; pVD: 0.82, 0.68-0.97, P < 0.01). Combined functional/vascular measures yielded the highest AUC (mfPhNR-pfVD: 0.94, 0.85-1.0, P<0.001). The functional/structural measure correlation (mfPhNR-mGCIPL correlation coefficient (rs): 0.58, P = 0.001; mfPhNR-pRNFL rs: 0.66, P < 0.0001) was stronger than the functional-vascular correlation (mfPhNR-pfVD rs: 0.29, P = 0.13; mfPhNR-pVD rs: 0.54, P = 0.003).ConclusionsThe combination of ERG measures and OCT-A improved diagnostic performance in glaucoma. Combing ERG, structural and OCT-A parameters provides an enhanced understanding of the pathophysiology of glaucoma.
Characterization of prolonged COVID-19 symptoms and patient comorbidities in an outpatient telemedicine cohort
Authors: Cellai Michele , O’Keefe James B. 
Published: July 2020

AbstractWe identified patients with coronavirus disease 2019 (COVID-19) in a telemedicine clinic who requested ongoing follow-up 6 weeks after symptom onset. Patients with prolonged symptoms often have not returned to work or usual activity. Respiratory symptoms are most common, and underlying asthma and lung disease occur frequently.
PAK3 controls the tangential to radial migration switch of cortical interneurons by coordinating changes in cell shape and polarity
Authors: Viou Lucie , Launay Pierre , Rousseau Véronique , Masson Justine , Pace Clarisse , Adelstein Robert S. , Ma X. , Jia Zhengping , Murakami Fujio , Barnier Jean-Vianney , Métin Christine 
Published: July 2020

SUMMARYDuring the embryonic development, cortical interneurons migrate a long distance tangentially and then re-orient radially to settle in the cortical plate where they contribute to cortical circuits. Migrating interneurons express PAK3, a p21-activated kinase that switches between active and inactive states and controls interneuron migration by unknown mechanism(s). Here we examined the role of the kinase activity of PAK3 to regulate the migration of cortical interneurons. We showed that interneurons expressing a constitutively active PAK3 mutant (PAK3-ca) oriented preferentially radially in the cortex, extended short leading processes and exhibited unstable polarity. On the contrary, interneurons expressing an inactive PAK3 mutant (PAK3-kd for kinase dead) extended branched leading processes, showed directed nuclear movements and remained in the tangential pathways. Results showed that PAK3 kinase activity controls the switch between the tangential and radial modes of migration of cortical interneurons and identified myosin 2B as an effector of this switch.
Is Boldness in Climbing Perch (Anabas testudineus) Sensitive to the Apparatus Used for Measurement?
Authors: Das Prantik , Binoy V V 
Published: July 2020

AbstractSwimway and open field are the two popular apparatus used for measuring boldness - the propensity to take risky decisions - in various piscine species. The present study compared boldness exhibited by an air breathing freshwater fish climbing perch in a swimway, rectangular open field, intermediate stages between these two apparatus and circular open field. Impact of the modification of the start chamber by providing substratum made up of cobbles and covering the water surface using water plant hydrilla, alone and in combinations on the boldness was also tested. Our results revealed that the apparatus has a significant impact on the boldness in climbing perch. The presence of a shelter in the experimental arena (swimway) and cobble substratum in the start chamber of the apparatus were found to be reducing boldness in this fish, while hydrilla cover on the water surface neutralised the impact of cobble substratum. Repeated exposure and resultant familiarity with the arena increased boldness of climbing perch but the pattern of modification of this behavioural trait exhibited during the course of experiment was divergent across the instruments. These results point towards the need for critically analyzing the influence of instruments used for measuring various behavioural traits and considering biological needs of the subject species while designing the apparatus.
Adenosine tips the pathogenic Th1 and Th17 responses in experimental autoimmune uveitis (EAU)
Authors: Sun Deming , Ko Minhee , Shao Hui , Kaplan Henry J. 
Published: July 2020

AbstractVarious pathological conditions are accompanied by ATP release from the intracellular to the extracellular compartment, where it degrades into adenosine and modulates immune responses. Previous studies concluded that both ATP and its degradation product adenosine are important immune-regulatory molecules; ATP acted as a danger signal that promotes immune responses, but adenosine’s effect was inhibitory. In this study, we show that adenosine plays an important role in balancing Th1 and Th17 pathogenic T cell responses in autoimmune disease. While its effect on Th1 responses is inhibitory, its effect on Th17 responses is enhancing, thereby impacting the balance between Th1 and Th17 responses. Mechanistic studies showed that this effect is mediated via several immune cells, among which γδ T cell activation and dendritic cell differentiation are prominent; adenosine and γδ-mediated immunoregulation synergistically impact each other’s effect. Adenosine augments the activation of γδ T cells, which is an important promoter for Th17 responses and has a strong effect on DC differentiation tipping the balance from generation of DCs that stimulate Th1 responses to those that stimulate Th17 responses. The knowledge acquired in this study should improve our understanding of the immune-regulatory effect of extracellular ATP-adenosine metabolism and improve treatment for autoimmune diseases caused by both Th1 and Th17-type pathogenic T cells.