806 research outputs found
Adapting and responding to a pandemic: Patient and family advisory councils in children\u27s hospitals during COVID-19
This mixed-methods study investigated the effects of the COVID-19 pandemic on Patient and Family Advisory Councils (PFACs) within children’s hospitals in the United States. Specifically, the study sought to understand how PFACs adapted operations as a result of the COVID-19 pandemic, how patient and family advisors (PFAs) were engaged in the response to COVID-19, and the intersection of the COVID-19 pandemic with PFAC diversity, equity, and inclusion. The study consisted of a survey distributed to 228 children’s hospitals, with a 73% response rate, and in-depth interviews with selected survey respondents (n=12). While COVID-19 temporarily disrupted PFAC operations and forced rapid adaptations, most children’s hospital PFACs transitioned successfully to virtual meetings, with 86% reporting that their PFAC met at least once from March to December 2020 and 84% indicating that their PFAC planned to meet as frequently or more frequently than before the pandemic. The majority of respondents (72%) reported that attendance at virtual PFAC meetings was the same as or better than with in-person meetings. Interview participants reported benefits associated with virtual meetings, including the potential ability to recruit and engage PFAs who better reflected the diversity of the patients and families served by the hospitals. Children’s hospitals are well-positioned to be leaders in the field, contributing to the development of new approaches, lessons learned, and best practices moving forward. This is especially true as hospitals continue to navigate the evolving realities of the COVID-19 pandemic, and as PFACs address challenges associated with maintaining diverse, equitable, and inclusive councils.
Experience Framework
This article is associated with the Patient, Family & Community Engagement lens of The Beryl Institute Experience Framework (https://www.theberylinstitute.org/ExperienceFramework). Access other PXJ articles related to this lens. Access other resources related to this lens
The intersection of diversity, equity, and inclusion with pediatric Patient and Family Advisory Councils
Patient and family advisory councils (PFACs) advance patient- and family-centered care within children’s hospitals but may not reflect the diversity of the communities they serve. We sought to assess PFAC diversity among children’s hospitals and explore barriers, drivers, and enablers of recruitment, retention, and engagement of patient and family advisors (PFAs) with diverse perspectives and backgrounds. We performed a mixed methods study to evaluate structure, composition, recruitment, and engagement strategies of children’s hospital PFACs. Individuals likely to have knowledge of or responsibility for PFACs at each Children’s Hospital Association (CHA) member hospital were asked to complete an electronic questionnaire. A subset of respondents from hospitals varying in size and region participated in 1-hour virtual interviews. We received valid responses from 166 (73%) of 228 CHA member hospitals. Eighty-eight percent reported having at least one PFAC. Only 21% selected “definitely true” when asked if their PFACs reflected the racial and ethnic diversity of the community served. Twelve respondents from various children’s hospitals participated in qualitative interviews. Five themes emerged: 1) Importance of Diversity in PFAC Membership; 2) Targeted, Personalized Recruitment and Engagement Strategies Facilitate Diverse PFACs; 3) Importance of Supporting PFAs from Diverse Backgrounds; 4) Ample Opportunities to Engage PFAs in Institutional Diversity, Equity, and Inclusion Efforts; and 5) External Factors as Drivers for Change within PFACs. Many PFACs are working to increase diversity, equity, and inclusion, but opportunities to close gaps remain. Findings may inform strategies to promote diversity, equity, and inclusion within PFACs across hospital systems.
Experience Framework
This article is associated with the Patient, Family & Community Engagement lens of The Beryl Institute Experience Framework (https://www.theberylinstitute.org/ExperienceFramework). Access other PXJ articles related to this lens. Access other resources related to this lens
Band Structure, Phase transitions and Semiconductor Analogs in One-Dimensional Solid Light Systems
The conjunction of atom-cavity physics and photonic structures (``solid
light'' systems) offers new opportunities in terms of more device functionality
and the probing of designed emulators of condensed matter systems. By analogy
to the canonical one-electron approximation of solid state physics, we propose
a one-polariton approximation to study these systems. Using this approximation
we apply Bloch states to the uniformly tuned Jaynes-Cummings-Hubbard model to
analytically determine the energy band structure. By analyzing the response of
the band structure to local atom-cavity control we explore its application as a
quantum simulator and show phase transition features absent in mean field
theory. Using this novel approach for solid light systems we extend the
analysis to include detuning impurities to show the solid light analogy of the
semiconductor. This investigation also shows new features with no semiconductor
analog.Comment: 7 page
Post-stroke upper limb recovery is correlated with dynamic resting-state network connectivity
Motor recovery is still limited for people with stroke especially those with greater functional impairments. In order to improve outcome, we need to understand more about the mechanisms underpinning recovery. Task-unbiased, blood flow–independent post-stroke neural activity can be acquired from resting brain electrophysiological recordings and offers substantial promise to investigate physiological mechanisms, but behaviourally relevant features of resting-state sensorimotor network dynamics have not yet been identified. Thirty-seven people with subcortical ischaemic stroke and unilateral hand paresis of any degree were longitudinally evaluated at 3 weeks (early subacute) and 12 weeks (late subacute) after stroke. Resting-state magnetoencephalography and clinical scores of motor function were recorded and compared with matched controls. Magnetoencephalography data were decomposed using a data-driven hidden Markov model into 10 time-varying resting-state networks. People with stroke showed statistically significantly improved Action Research Arm Test and Fugl-Meyer upper extremity scores between 3 weeks and 12 weeks after stroke (both P < 0.001). Hidden Markov model analysis revealed a primarily alpha-band ipsilesional resting-state sensorimotor network which had a significantly increased life-time (the average time elapsed between entering and exiting the network) and fractional occupancy (the occupied percentage among all networks) at 3 weeks after stroke when compared with controls. The life-time of the ipsilesional resting-state sensorimotor network positively correlated with concurrent motor scores in people with stroke who had not fully recovered. Specifically, this relationship was observed only in ipsilesional rather in contralesional sensorimotor network, default mode network or visual network. The ipsilesional sensorimotor network metrics were not significantly different from controls at 12 weeks after stroke. The increased recruitment of alpha-band ipsilesional resting-state sensorimotor network at subacute stroke served as functionally correlated biomarkers exclusively in people with stroke with not fully recovered hand paresis, plausibly reflecting functional motor recovery processes
Analysis of Neptune's 2017 Bright Equatorial Storm
We report the discovery of a large (8500 km diameter) infrared-bright
storm at Neptune's equator in June 2017. We tracked the storm over a period of
7 months with high-cadence infrared snapshot imaging, carried out on 14 nights
at the 10 meter Keck II telescope and 17 nights at the Shane 120 inch reflector
at Lick Observatory. The cloud feature was larger and more persistent than any
equatorial clouds seen before on Neptune, remaining intermittently active from
at least 10 June to 31 December 2017. Our Keck and Lick observations were
augmented by very high-cadence images from the amateur community, which
permitted the determination of accurate drift rates for the cloud feature. Its
zonal drift speed was variable from 10 June to at least 25 July, but remained a
constant m s from 30 September until at least 15
November. The pressure of the cloud top was determined from radiative transfer
calculations to be 0.3-0.6 bar; this value remained constant over the course of
the observations. Multiple cloud break-up events, in which a bright cloud band
wrapped around Neptune's equator, were observed over the course of our
observations. No "dark spot" vortices were seen near the equator in HST imaging
on 6 and 7 October. The size and pressure of the storm are consistent with
moist convection or a planetary-scale wave as the energy source of convective
upwelling, but more modeling is required to determine the driver of this
equatorial disturbance as well as the triggers for and dynamics of the observed
cloud break-up events.Comment: 42 pages, 14 figures, 6 tables; Accepted to Icaru
Midgut epithelial endocrine cells are a rich source of the neuropeptides APSGFLGMRamide (Cancer borealis tachykinin-related peptide Ia) and GYRKPPFNGSIFamide (Gly\u3csup\u3e1\u3c/sup\u3e-SIFamide) in the crabs Cancer borealis, Cancer magister and Cancer productus
Over a quarter of a century ago, Mykles described the presence of putative endocrine cells in the midgut epithelium of the crab Cancer magister (Mykles, 1979). In the years that have followed, these cells have been largely ignored and nothing is known about their hormone content or the functions they play in this species. Here, we used a combination of immunohistochemistry and mass spectrometric techniques to investigate these questions. Using immunohistochemistry, we identified both SIFamide-and tachykinin-related peptide (TRP)-like immunopositive cells in the midgut epithelium of C. magister, as well as in that of Cancer borealis and Cancer productus. In each species, the SIFamide-like labeling was restricted to the anterior portion of the midgut, including the paired anterior midgut caeca, whereas the TRP-like immunoreactivity predominated in the posterior midgut and the posterior midgut caecum. Regardless of location, label or species, the morphology of the immunopositive cells matched that of the putative endocrine cells characterized ultrastructurally by Mykles (Mykles, 1979). Matrix-assisted laser desorption/ ionization-Fourier transform mass spectrometry identified the peptides responsible for the immunoreactivities as GYRKPPFNGSIFamide (Gly 1-SIFamide) and APSGFLGMRamide [Cancer boreatis tachykinin-related peptide Ia (CabTRP Ia)], respectively, both of which are known neuropeptides of Cancer species. Although the function of these midgut-derived peptides remains unknown, we found that both Gly1-SIFamide and CabTRP Ia were released when the midgut was exposed to high-potassium saline. In addition, CabTRP Ia was detectable in the hemolymph of crabs that had been held without food for several days, but not in that of fed animals, paralleling results that were attributed to TRP release from midgut endocrine cells in insects. Thus, one function that midgut-derived CabTRP Ia may play in Cancer species is paracrine/hormonal control of feeding-related behavior, as has been postulated for TRPs released from homologous cells in insects
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Identification of an Atypical Calcium-Dependent Calmodulin Binding Site on the C-terminal domain of GluN2A
N-methyl-D-aspartate (NMDA) receptors are calcium-permeable ion channels
assembled from four subunits that each have a common membrane topology. The
intracellular carboxyl terminal domain (CTD) of each subunit varies in length, is least
conserved between subunits, and binds multiple intracellular proteins. We defined a
region of interest in the GluN2A CTD, downstream of well-characterized membraneproximal
motifs, that shares only 29% sequence similarity with the equivalent region of
GluN2B. GluN2A (amino acids 875-1029) was fused to GST and used as a bait to
identify proteins from mouse brain with the potential to bind GluN2A as a function of
calcium. Using mass spectrometry we identified calmodulin as a calcium-dependent
GluN2A binding partner. Equilibrium fluorescence spectroscopy experiments indicate
that Ca²⁺/calmodulin binds GluN2A with high affinity (5.2 ± 2.4 nM) in vitro. Direct
interaction of Ca²⁺/calmodulin with GluN2A was not affected by disruption of classic
sequence motifs associated with Ca²⁺/calmodulin target recognition, but was critically
dependent upon Trp-1014. These findings provide new insight into the potential of
Ca²⁺/calmodulin, previously considered a GluN1-binding partner, to influence NMDA
receptors by direct association.Keywords: NMDA, Calmodulin, Calcium, GlutamateKeywords: NMDA, Calmodulin, Calcium, Glutamat
Stomatal CO2/bicarbonate sensor consists of two interacting protein kinases, Raf-like HT1 and nonkinase-activity activity requiring MPK12/MPK4
Publisher Copyright: © 2022 The Authors.The continuing rise in the atmospheric carbon dioxide (CO2) concentration causes stomatal closing, thus critically affecting transpirational water loss, photosynthesis, and plant growth. However, the primary CO2 sensor remains unknown. Here, we show that elevated CO2 triggers interaction of the MAP kinases MPK4/MPK12 with the HT1 protein kinase, thus inhibiting HT1 kinase activity. At low CO2, HT1 phosphorylates and activates the downstream negatively regulating CBC1 kinase. Physiologically relevant HT1-mediated phosphorylation sites in CBC1 are identified. In a genetic screen, we identify dominant active HT1 mutants that cause insensitivity to elevated CO2. Dominant HT1 mutants abrogate the CO2/bicarbonate-induced MPK4/12-HT1 interaction and HT1 inhibition, which may be explained by a structural AlphaFold2- and Gaussian-accelerated dynamics-generated model. Unexpectedly, MAP kinase activity is not required for CO2 sensor function and CO2-triggered HT1 inhibition and stomatal closing. The presented findings reveal that MPK4/12 and HT1 together constitute the long-sought primary stomatal CO2/bicarbonate sensor upstream of the CBC1 kinase in plants.Peer reviewe
SUMOs Mediate the Nuclear Transfer of p38 and p-p38 during Infection
The p38 mitogen activated protein kinase (MAPK) signaling pathway has been suggested to play a significant role in the gastric mucosal inflammatory response to chronic Helicobacter pylori (H. pylori) infection. Nuclear translocation is thought to be important for p38 function, but no nuclear translocation signals have been found in the protein and no nuclear carrier proteins have been identified for p38. We have investigated the role of small ubiquitin-related modifier (SUMO) in the nuclear transfer of p38 in response to H. pylori infection. Exposure of human AGS cells to H. pylori induced the activation of p38 and the expression of SUMOs, especially SUMO-2. SUMO knockdown counteracted the effect of H. pylori infection by decreasing the resulting p38 mediated cellular apoptosis through a reduction in the nuclear fraction of phosphorylated p38. We identified a non-covalent interaction between SUMOs and p38 via SUMO interaction motifs (SIMs), and showed that SUMO-dependent nuclear transfer of p38 was decreased upon mutation of its SIMs. This study has identified a new pathway of p38 nuclear translocation, in response to H. pylori infection. We conclude that in the presence of H. pylori SUMO-2 has a major role in regulating nuclear levels of p38, through non-covalent SUMO-p38 interactions, independent of the p38 phosphorylation state
Ramucirumab in the second-line for patients with hepatocellular carcinoma and elevated alpha-fetoprotein: patient-reported outcomes across two randomised clinical trials
Background: Symptoms of advanced hepatocellular carcinoma (HCC) represent a substantial burden for the patient and are important endpoints to assess when evaluating treatment. Patient-reported outcomes were evaluated in subjects with advanced HCC and baseline alpha-fetoprotein (AFP) ≥400 ng/mL treated with second-line ramucirumab. Patients and methods: Patients with AFP≥400 ng/mL enrolled in the REACH or REACH-2 phase 3 studies were used in this analysis. Eligible patients had advanced HCC, Child-Pugh A, Eastern Cooperative Oncology Group performance status 0/1 and prior sorafenib. Patients received ramucirumab 8 mg/kg or placebo once every 2 weeks. Disease-related symptoms and health-related quality of life (HRQoL) were assessed with the Functional Assessment of Cancer Therapy Hepatobiliary Symptom Index (FHSI)-8 and EuroQoL-5-Dimensions (EQ-5D) instruments, respectively. Time to deterioration (TTD) (≥3-point decrease in FHSI-8 total score;≥0.06-point decrease in EQ-5D score, from randomisation to first date of deterioration) was determined using Kaplan-Meier estimation and the Cox proportional hazards model. Both separate and pooled analyses for REACH AFP≥400 ng/mL and REACH-2 patients were conducted. Results: In the pooled population with AFP ≥400 ng/mL (n=542; ramucirumab, n=316; placebo, n=226), median TTD in FHSI-8 total score was prolonged with ramucirumab relative to placebo (3.3 vs 1.9 months; HR 0.725; (95% CI 0.559 to 0.941); p=0.0152), including significant differences in back pain (0.668; (0.497 to 0.899); p=0.0044), weight loss (0.699; (0.505 to 0.969); p=0.0231) and pain (0.769; (0.588 to 1.005); p=0.0248) symptoms. TTD in EQ-5D score was not significantly different between ramucirumab and placebo groups (median 2.9 vs 1.9 months). Results in the individual trials were consistent with these findings. Conclusions: Ramucirumab in second-line treatment of advanced HCC demonstrates consistent benefit in the delay of deterioration in disease-related symptoms with no worsening of HRQoL. Taken with previously demonstrated ramucirumab-driven survival benefits in this setting, these data may inform patient-clinician discussions about the benefit-risk profile of this therapy
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