Electrostatic interactions, hydrogen bonding, and solvation effects can alter the free energies of ionizable functional groups in proteins and other nanoporous architectures, allowing such structures to tune acid-base chemistry to support specific functions. Herein, we expand on this theme to examine how metal sites ( = H, Zn, Co, Co) affect the p of benzoic acid guests bound in discrete porphyrin nanoprisms () in CDCN. These host-guest systems were chosen to model how porous metalloporphyrin electrocatalysts might influence H transfer processes that are needed to support important electrochemical reactions (e.
View Article and Find Full Text PDFClimate change is altering the functioning of foundational ecosystems. While the direct effects of warming are expected to influence individual species, the indirect effects of warming on species interactions remain poorly understood. In marine systems, as tropical herbivores undergo poleward range expansion, they may change food web structure and alter the functioning of key habitats.
View Article and Find Full Text PDFAffinities of six anions (mesylate, acetate, trifluoroacetate, p-toluenecarboxylate, p-toluenesulfonate, and perfluorooctanoate) for three related Pt -linked porphyrin nanocages were measured to probe the influence of different noncovalent recognition motifs (e. g., hydrogen bonding, electrostatics, π bonding) on anion binding.
View Article and Find Full Text PDFProgress in psychopathy research has been hampered by ongoing contention about its fundamental cause. The Impaired Integration theory of psychopathy provides an attention-based account of information integration abnormalities. We set out to evaluate the suggested mechanism via an innovative application of the well-established illusory conjunction paradigm.
View Article and Find Full Text PDFIntroduction: Rapid outpatient diagnostic programs (RODP) expedite lung cancer evaluation, but their impact on racial disparities in the timeliness of evaluation is less clear.
Materials And Methods: This was a retrospective analysis of the impact of an internally developed application-supported RODP on racial disparities in timely referral completion rates for patients with potential lung cancer at a safety-net healthcare system. An application screened referrals to pulmonology for indications of lung mass or nodule and presented relevant clinical information that enabled dedicated pulmonologists to efficiently review and triage cases according to urgency.
Nanocages with porphyrin walls are common, but studies of such structures hosting redox-active metals are rare. Pt-linked ML nanoprisms with cobalt-porphyrin walls were prepared and their redox properties were evaluated electrochemically and chemically, leading to the first time that cobalt-porphyrin nanocages have been characterized in Co, Co, and Co states.
View Article and Find Full Text PDFThe host-guest chemistry of metal-organic nanocages is typically driven by thermodynamically favorable interactions with their guests such that uptake and release of guests can be controlled by switching this affinity on or off. Herein, we achieve this effect by reducing porphyrin-walled cationic nanoprisms and to zwitterionic states that rapidly uptake organometallic cations Cp*Co and CpCo, respectively. Cp*Co binds strongly ( = 1.
View Article and Find Full Text PDFObjectives: To determine whether SLE patients with inflammatory joint symptoms and US synovitis/tenosyovitis achieve better clinical responses to glucocorticoids compared with patients with normal scans. Secondary objectives included identification of clinical features predicting US synovitis/tenosynovitis.
Methods: In a longitudinal multicentre study, SLE patients with physician-diagnosed inflammatory joint pain received intramuscular methylprednisolone 120 mg once.
Redox-active metal-organic nanocages are of interest for many applications, but the development of cages with extensive redox activity is often hindered by their limited stability and solubility across multiple charge states. This report reveals that these properties can be tuned for cages with redox-active walls by incorporating additional redox activity into the linkers. In particular, new +12 charged triangular nanoprisms , were formed from three electroactive tetrakis(3-pyridyl)porphyrin walls linked by six [(TMEDA)Pt] (for ) or [(2,2'-bipy)Pt] (for ) vertices, the latter of which are also electroactive.
View Article and Find Full Text PDFWe report an interesting case of hepatitis C virus-negative type II cryoglobulinaemic vasculitis (CV) in a patient with a background history of systemic lupus erythematosus. The type II CV became less responsive to traditional treatments over time and culminated in an intensive care unit admission with critical multiorgan failure. A detailed flow cytometric evaluation of the bone marrow proved to be helpful in treatment.
View Article and Find Full Text PDFObjective: To evaluate clinical, interferon and imaging predictors of progression from 'At Risk' to autoimmune connective tissue diseases (AI-CTDs).
Methods: A prospective observational study was conducted in At-Risk of AI-CTD (defined as antinuclear antibody (ANA) positive; ≤1 clinical systemic lupus erythematosus (SLE) criterion; symptom duration <12 months and treatment-naïve). Bloods and skin biopsy (non-lesional) were analysed for two interferon-stimulated gene expression scores previously described (IFN-Score-A and IFN-Score-B).
It is well established that the autoantibodies that characterize both rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE) are present systemically years before patients develop disease. In both these autoimmune rheumatic diseases, evidence is growing that local autoimmune processes occur at epithelial surfaces potentially initiating localized autoimmunity. For RA, these are mucosal surfaces including the oral mucosa, lung, and gut.
View Article and Find Full Text PDFI was one of more than 40 nursing students who travelled to Berlin in June for a five-day trip focusing on the health and care of refugees and asylum seekers - an area I previously knew little about.
View Article and Find Full Text PDFIntern Med J
December 2017
Background: The international literature advocates for cancer screening in newly diagnosed patients with autoimmune myositis; however, there is no widely accepted consensus or guideline to outline the optimal cancer screening strategy and the evidence is currently insufficient to support any recommendation.
Aim: Our study aimed to establish the current trends in practice in malignancy screening in autoimmune myositis among Australian rheumatologists.
Methods: All rheumatologists who were full members of the Australian Rheumatology Association in 2016 (386) were invited to complete an online questionnaire.
Complex regional pain syndrome has long been recognized as a severe and high impact chronic pain disorder. However, the condition has historically been difficult to define and classify and little attention has been given to where complex regional pain syndrome sits within other apparently similar chronic pain disorders, such as fibromyalgia and regional pain syndrome. In this review challenges in regard to nomenclature, definitions, and classification of complex regional pain syndrome are reviewed and suggestions are provided about future directions.
View Article and Find Full Text PDFA well-established literature has identified different selective attentional orienting mechanisms underlying anxiety-related attentional bias, such as engagement and disengagement of attention. These mechanisms are thought to contribute to the onset and maintenance of anxiety disorders. However, conclusions to date have relied heavily on experimental work from subclinical samples.
View Article and Find Full Text PDFAdaptive behavior relies on the ability to effectively and efficiently ignore irrelevant information, an important component of attentional control. The current research found that fundamental difficulties in ignoring irrelevant material are related to dispositional differences in trait propensity to worry, suggesting a core deficit in attentional control in high worriers. The degree of deficit in attentional control correlated with the degree of difficulty in suppressing negative thought intrusions in a worry assessment task.
View Article and Find Full Text PDFAlthough the traits of psychopathic personality (psychopathy) have received extensive attention from researchers in forensic psychology, psychopathology, and personality psychology, the relations of these traits to aspects of everyday functioning are poorly understood. Using a large internet survey of members of the general population (N = 3388), we examined the association between psychopathic traits, as measured by a brief but well-validated self-report measure, and occupational choice, political orientation, religious affiliation, and geographical residence. Psychopathic traits, especially those linked to fearless dominance, were positively and moderately associated with holding leadership and management positions, as well as high-risk occupations.
View Article and Find Full Text PDFObjective: To explore the experience of the dialysis modality decision-making process from the perspective of the significant other.
Methods: A qualitative interpretive description study was conducted using the Interprofessional Shared Decision Making Model (Légaré et al., 2011).
Optical tomography provides a means for the determination of the spatial distribution of materials with different optical density in a volume by non-intrusive means. This paper presents results of concentration measurements of gas bubbles in a water column using an optical tomography system. A hydraulic flow rig is used to generate vertical air-water two-phase flows with controllable bubble flow rate.
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