Carbon quantum dots in N,N'-Dicyclohexylcarbodiimide assisted cellulose: A fluorescence sensitive approach for ex vivo glucose monitoring in human serum.

Bioactive functional materials have been focused recently because of their superior properties due to structural orientations. Herein, carbon quantum dots (CQDs) encapsulated chemically modified carboxymethyl cellulose (CMC) nanocomposites are designed for non-enzymatic ex vivo glucose sensing by a low-cost green technique. The N,N'-Dicyclohexylcarbodiimide (DCC) assisted Steglich esterification between CMC and glucose is responsible for the fluorescence "Turn ON-OFF" mechanism behind glucose detection.

Early Doffing among Frontline Healthcare Workers Working in the COVID Areas in Resource-Limited Settings: Lessons Learned and Interventions Taken.

Background: In the fight against the pandemic, personal protective equipment (PPE) has played a vital role. However, working with PPE has its own difficulties and problems. The aim of this study was to find out the reasons of early doffing, that is, in doffing in emergency situations before the shift among healthcare workers (HCWs) working in PPE in the COVID areas in resource-limited settings.

Association between Hypocalcemia and Outcome in COVID-19 Patients: A Retrospective Study.

 Calcium has been shown to play a vital role in the pathophysiology of severe acute respiratory syndrome-coronavirus-2 and middle east respiratory syndrome coronavirus diseases, but less is known about hypocalcemia in coronavirus disease 2019 (COVID-19) patients and its association with the disease severity and the final outcome. Therefore, this study was conducted with an aim to assess clinical features in COVID-19 patients having hypocalcemia and to observe its impact on COVID-19 disease severity and the final outcome.  In this retrospective study, consecutive COVID-19 patients of all age groups were enrolled.

Results From a Phase 4, Multicenter, Randomized, Double-Blind, Placebo-Controlled Study of Repository Corticotropin Injection for the Treatment of Pulmonary Sarcoidosis.

Introduction: Long-term treatment of pulmonary sarcoidosis with glucocorticoids has been associated with toxicity and other adverse events, highlighting the need for alternative therapies. The goal of this study was to evaluate the efficacy and safety of repository corticotropin injection (RCI, Acthar Gel) in patients with pulmonary sarcoidosis and to validate endpoints for use in future clinical trials.

Methods: In this multicenter, randomized, placebo-controlled trial, subjects received subcutaneous RCI (80 U) twice weekly or matching placebo through 24 weeks in a double-blind treatment phase, followed by an optional 24-week open-label extension.

Double-blind randomized proof-of-concept trial of canakinumab in patients with COVID-19 associated cardiac injury and heightened inflammation.

Aims: In coronavirus disease 2019 (COVID-19), myocardial injury is associated with systemic inflammation and higher mortality. Our aim was to perform a proof of concept trial with canakinumab, a monoclonal antibody to interleukin-1β, in patients with COVID-19, myocardial injury, and heightened inflammation.

Methods And Results: This trial required hospitalization due to COVID-19, elevated troponin, and a C-reactive protein concentration more than 50 mg/L.

Prospective cohort of cryobiopsy in interstitial lung diseases: a single center experience.

Rationale: Transbronchial cryobiopsy has been increasingly used to diagnose interstitial lung diseases. However, there is uncertainty regarding its accuracy and risks, mainly due to a paucity of prospective or randomized trials comparing cryobiopsy to surgical biopsy.

Objectives: To evaluate the diagnostic yield and complications of cryobiopsy in patients selected by multidisciplinary discussion.

Effects of Wearing an N95 Respirator or Cloth Mask Among Adults at Peak Exercise: A Randomized Crossover Trial.

This randomized crossover trial examines the effects of wearing a cloth mask or N95 respirator vs no mask at peak exercise among healthy, active adults.

Canakinumab to reduce deterioration of cardiac and respiratory function in SARS-CoV-2 associated myocardial injury with heightened inflammation (canakinumab in Covid-19 cardiac injury: The three C study).

Background: In patients with Covid-19, myocardial injury and increased inflammation are associated with morbidity and mortality. We designed a proof-of-concept randomized controlled trial to evaluate whether treatment with canakinumab prevents progressive respiratory failure and worsening cardiac dysfunction in patients with SARS-CoV2 infection, myocardial injury, and high levels of inflammation.

Hypothesis: The primary hypothesis is that canakiumab will shorten time to recovery.

Thoracic imaging in COVID-19.

The typical findings of COVID-19 on chest radiography and computed tomography (CT) include bilateral, multifocal parenchymal opacities (ground-glass opacities with or without consolidation, and "crazy paving"). In most cases, the opacities are predominantly in the peripheral and lower lung zones, and several have rounded morphology. However, these imaging findings are not pathognomonic for COVID-19 pneumonia and can be seen in other viral and bacterial infections, as well as with noninfectious causes such as drug toxicity and connective tissue disease.

Use of leflunomide in patients with chronic hypersensitivity pneumonitis.

Background: Prednisone has been shown to reverse lung function declines in hypersensitivity pneumonitis patients without established fibrosis. Second line immunosuppressants like azathioprine and mycophenolate mofetil have a steroid sparing effect and improve DLCO. There is no published literature on the use of leflunomide in such patients.

Performance of diagnostic criteria in patients clinically judged to have cardiac sarcoidosis: Is it time to regroup?

Background: The diagnosis of cardiac sarcoidosis (CS) is challenging. Because of the current limitations of endomyocardial biopsy as a reference standard, physicians rely on advanced cardiac imaging, multidisciplinary evaluation, and diagnostic criteria to diagnose CS.

Aims: To compare the 3 main available diagnostic criteria in patients clinically judged to have CS.

Toxicity risk from glucocorticoids in sarcoidosis patients.

Background: Glucocorticoids (GC) are considered first-line therapy for treating sarcoidosis, but there are few data about the adverse consequences of GC. Although there are several steroid-sparing medications available for treatment, a large proportion of patients are treated with prolonged courses of GC. The toxicities of GC in sarcoidosis populations have not been carefully evaluated.

Head injury assessment of non-lethal projectile impacts: A combined experimental/computational method.

The main objective of this study is to develop a methodology to assess this risk based on experimental tests versus numerical predictive head injury simulations. A total of 16 non-lethal projectiles (NLP) impacts were conducted with rigid force plate at three different ranges of impact velocity (120, 72 and 55m/s) and the force/deformation-time data were used for the validation of finite element (FE) NLP. A good accordance between experimental and simulation data were obtained during validation of FE NLP with high correlation value (>0.

Brain injury tolerance limit based on computation of axonal strain.

Traumatic brain injury (TBI) is the leading cause of death and permanent impairment over the last decades. In both the severe and mild TBIs, diffuse axonal injury (DAI) is the most common pathology and leads to axonal degeneration. Computation of axonal strain by using finite element head model in numerical simulation can enlighten the DAI mechanism and help to establish advanced head injury criteria.

Development of skull fracture criterion based on real-world head trauma simulations using finite element head model.

The objective of this study was to enhance an existing finite element (FE) head model with composite modeling and a new constitutive law for the skull. The response of the state-of-the-art FE head model was validated in the time domain using data from 15 temporo-parietal impact experiments, conducted with postmortem human surrogates. The new model predicted skull fractures observed in these tests.

Outcome of cardiac sarcoidosis after radiofrequency ablation and placement of AICD- A propensity matched analysis.

Background: Cardiac Sarcoidosis (CS) can lead to life-threatening ventricular dysrhythmias and sudden death. Immunosuppressive medications, radiofrequency ablation (RFA), and implantable cardioverter defibrillators (ICD) have been utilized to manage ventricular dysrhythmias but their benefits remain poorly defined.

Objective: The aim of this study is to assess the durability of RFA in CS population and to determine outcome predictors after RFA.

Influence of head mass on temporo-parietal skull impact using finite element modeling.

The effect of head mass on its biomechanical response during lateral impact to the head is investigated in this computational study. The mass of the head of a state-of-the-art validated finite element head model is altered by ± 10 % from the base value of 4.7 kg.

Disease Recurrence and Acute Cellular Rejection Episodes During the First Year After Lung Transplantation Among Patients With Sarcoidosis.

Introduction: Sarcoidosis is reported to recur after lung transplantation (LT). We sought to determine the frequency of recurrent disease after LT and predictors of recurrence. We also evaluated the incidence and severity of acute cellular rejection (ACR) episodes among these patients.

Characteristics and outcomes of patients with lung transplantation requiring admission to the medical ICU.

Background: There are few data on characteristics and outcomes among patients with lung transplantation (LT) requiring admission to the medical ICU (MICU) beyond the perioperative period.

Methods: We interrogated the registry database of all admissions to the MICU at Cleveland Clinic (a 53-bed closed unit) to identify patients with history of LT done > 30 days ago (n = 101; mean age, 55.4 ± 12.

Development and validation of an advanced anisotropic visco-hyperelastic human brain FE model.

This paper proposes the implementation of fractional anisotropy and axonal fiber orientation from diffusion tensor imaging (DTI) of 12 healthy patients into an existing human FE head model to develop a more realistic brain model with advanced constitutive laws. Further, the brain behavior was validated in terms of brain strain against experimental data published by Hardy et al. (2001, 2007) and for brain pressure against Nahum et al.

Anisotropic composite human skull model and skull fracture validation against temporo-parietal skull fracture.

A composite material model for skull, taking into account damage is implemented in the Strasbourg University finite element head model (SUFEHM) in order to enhance the existing skull mechanical constitutive law. The skull behavior is validated in terms of fracture patterns and contact forces by reconstructing 15 experimental cases. The new SUFEHM skull model is capable of reproducing skull fracture precisely.