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RESULTS A total of 67 patients were included in the study. The DAS28 after initiation of leflunomide was associated with baseline DAS28 (β=0.70, p less then 0.001) and was higher in those who carried DHODH Haplotype 2 (β=0.56, p=0.01) and did not carry the shared epitope (β=0.56, p=0.013). As total and free plasma teriflunomide concentration increased, DAS28 was significantly lower (p less then 0.001 and p=0.001 respectively). When considering threshold concentrations, teriflunomide concentrations above 16 mg/L were associated with a DAS28 that was 0.33 lower, and when free teriflunomide concentration was above 35 µg/L, DAS28 was 0.32 lower. CONCLUSION Teriflunomide concentration and carriage of DHODH Haplotype 2 are associated with response to leflunomide in patients with RA, and a total plasma teriflunomide concentration of at least 16 mg/L is needed to maximise the likelihood of response. This article is protected by copyright. All rights reserved.Coronavirus disease-2019 (COVID-19), caused by the highly pathogenic virus SARS-CoV-2, demonstrates high morbidity and mortality caused by development of a severe acute respiratory syndrome connected with extensive pulmonary fibrosis (PF). In this Perspective, we argue that adipocytes and adipocyte-like cells, such as pulmonary lipofibroblasts, may play an important role in the pathogenic response to COVID-19. Expression of angiotensin-converting enzyme 2 (ACE2 - the functional receptor for SARS-CoV) - is upregulated in adipocytes of obese and diabetic patients, which turns adipose tissue into a potential target and viral reservoir. This may explain why obesity and diabetes are potential comorbidities for COVID-19 infections. Similar to the recently established adipocyte-myofibroblast transition (AMT), pulmonary lipofibroblasts located in the alveolar interstitium and closely related to classical adipocytes, demonstrate the ability to transdifferentiate into myofibroblasts that play an integral part of PF. This may significantly increase the severity of the local response to COVID-19 in the lung. To reduce the severity and mortality with COVID-19, we propose to probe for the clinical response to thiazolidinediones (TZDs), PPARγ agonists, that are the well-known anti-diabetic drugs. TZDs are able to stabilize lipofibroblasts in their "inactive" state, preventing the transition to myofibroblasts and thereby reducing the development of pulmonary fibrosis and stimulating its resolution. This article is protected by copyright. All rights reserved.OBJECTIVES Fatigue is common among people with inflammatory arthritis but is hard to manage. The aim of this study was to investigate how daily fluctuations in psychological variables correspond with changes in fatigue-related disability in the daily lives of people with inflammatory arthritis to identify factors to target in psychological interventions and routine clinical practice. METHODS A cohort of 143 patients with rheumatoid arthritis (n=97) or ankylosing spondylitis (n=46) participated in a 10-day online diary study. Each evening participants completed a diary questionnaire assessing their fatigue, pain, fatigue-related disability, and four components of psychological flexibility (valued activity, mindfulness, cognitive fusion, and fatigue avoidance). RESULTS On days when participants were more engaged in valued activities or more mindful, they reported less disability due to fatigue, even when controlling for levels of fatigue and pain that day. The daily psychological flexibility variables explained a total of 15.6% of the variance in daily fatigue-related disability. CONCLUSION Psychological flexibility variables are directly associated with fatigue-related disability in the daily lives of inflammatory arthritis patients. Further research is needed to investigate whether interventions that target psychological flexibility are effective at reducing fatigue-related disability. This article is protected by copyright. All rights reserved.In rice, the Waxy (Wx) gene encoding GBSSI (granule-bound starch synthase I) controls amylose synthesis in endosperm and is the primary factor influencing grain eating and cooking quality (ECQ). This article is protected by copyright. All rights reserved.Cost-effective and high-performance electrocatalysts for oxygen reduction reactions are needed for many energy storage and conversion devices. read more Here, we demonstrate that whey powder, a major by-product in the dairy industry, can be used as a sustainable precursor to produce heteroatom doped carbon electrocatalysts for ORR. Rich N and S compounds in whey powders can generate abundant catalytic active sites. However, these sites are not easily accessible by reactants in ORR. A dual-template method was used to create a hierarchical and interconnected porous structure with micropores created by ZnCl 2 and large mesopores generated by fumed SiO 2 particles. At the optimum mass ratio of whey power ZnCl 2 SiO 2 at 130.8, the resulting carbon material has a large specific surface area close to 2000 m 2 g -1 , containing 4.6 at.% of N with 50.4% as pyridinic N. This carbon material shows superior catalytic activity for ORR, with an electron transfer number of 3.88 and a large kinetic limiting current density of 45.40 mA cm -2 . They were employed as ORR catalysts to assemble primary zinc-air batteries, which deliver a power density of 84.1 mW cm -2 and a specific capacity of 779.5 mAh g -1 , outperforming batteries constructed using the commercial Pt/C catalyst. Our findings open new opportunities to use an abundant biomaterial, whey powder, to create high-value-added carbon electrocatalyst for emerging energy applications. © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.Variants of the highly active [NiFeSe] hydrogenase from D. vulgaris Hildenborough exhibiting enhanced O2 tolerance were used as H2 oxidation catalysts in H2/O2 biofuel cells. Two [NiFeSe] variants were electrically wired by means of low-potential viologen-modified redox polymers and evaluated with respect to H2 oxidation and stabi-lity against O2 in the immobilized state. Both variants show maximum current densities of (450 ± 84) µA cm-2 for G491A and (476 ± 172) µA cm-2 for the variant G941S on glassy carbon electrodes and a higher O2 tolerance as compared to the wild type, in addition the polymer protects the enzyme from O2 damage and high potential inactivation establishing a triple protection for the bioanode. The use of gas diffu-sion bioanodes provided current densities for H2 oxidation of up to 6.3 mA cm-2. Combination of the gas diffusion bioanode with a bilirubin oxidase based gas diffusion O2 reducing biocathode in a membrane-free biofuel cell and under anode limiting conditions showed unprece-dented benchmark power densities of 4.
Website: https://www.selleckchem.com/products/scutellarin.html
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