Miracle-dz/UniFAR-FTUs huggingface dataset:
Memory for flowers in rufous hummingbirds: location or local visual cues?

Abstract Rufous hummingbirds,Selasphorus rufus, remember locations of flowers. They avoid flowers they have emptied recently and those they have found to be empty. In contrast, after one brief experience they return to flowers they have left with food remaining. To determine whether hummingbirds primarily use spatial or colour/pattern cues to return to previously visited flowers, two field experiments were performed. In the first, subjects fed from a reward flower and on their subsequent return had to choose between visual cues that were dissociated from spatial cues. The birds showed a marked preference for returning to the correct location of the previously visited flower and not to the flower bearing the appropriate colour/pattern. The second experiment involved a delayed-matching-to-location task in which the subjects fed from, but did not deplete, a focal flower and on return had to choose between the focal flower and a new distractive flower. The latter was presented at three different distances from the focal flower and was either the same or different in colour to the focal flower. Subjects most often chose the focal flower when the distractive flower was of a different colour, whereas performance was poor when it resembled the focal flower. However, a significant interaction between the colour and distance of the distractive flower suggests that the hummingbirds were able to discriminate between focal and distractive flowers under both conditions, but that they employed different foraging tactics according to the colour of the distractive flower in the choice phase.
Factors influencing patient adherence with diabetic eye screening in rural communities: A qualitative study

Objective Diabetic retinopathy remains the leading cause of blindness among working-age U.S. adults largely due to low screening rates. Rural populations face particularly greater challenges to screening because they are older, poorer, less insured, and less likely to receive guideline-concordant care than those in urban areas. Current patient education efforts may not fully address multiple barriers to screening faced by rural patients. We sought to characterize contextual factors affecting rural patient adherence with diabetic eye screening guidelines. Research design and methods We conducted semi-structured interviews with 29 participants (20 adult patients with type 2 diabetes and 9 primary care providers) in a rural, multi-payer health system. Both inductive and directed content analysis were performed. Results Factors influencing rural patient adherence with diabetic eye screening were categorized as environmental, social, and individual using the Ecological Model of Health. Major themes included limited access to and infrequent use of healthcare, long travel distances to obtain care, poverty and financial tradeoffs, trusting relationships with healthcare providers, family members’ struggles with diabetes, anxiety about diabetes complications, and the burden of diabetes management. Conclusions Significant barriers exist for rural patients that affect their ability to adhere with yearly diabetic eye screening. Many studies emphasize patient education to increase adherence, but current patient education strategies fail to address major environmental, social, and individual barriers. Addressing these factors, leveraging patient trust in their healthcare providers, and strategies targeted specifically to environmental barriers such as long travel distances (e.g. teleophthalmology) may fill crucial gaps in diabetic eye screening in rural communities.
Pre-clinical assay of the tissue integration and mechanical adhesion of several types of cyanoacrylate adhesives in the fixation of lightweight polypropylene meshes for abdominal hernia repair

Introduction Lightweight (LW) polypropylene (PP) meshes better adapt to host tissue, causing less fibrosis and inflammatory responses than high-density meshes. Mesh fixation using tissue adhesives (TA) that replace conventional sutures may improve the process of hernia repair and tissue trauma. This preclinical study compares the behavior of different cyanoacrylate-based adhesives in the fixation of LW-PP meshes for hernia repair. Methods Partial abdominal wall defects were repaired using LW-PP Optilene meshes in New Zealand rabbits. The following groups were established according to the mesh fixation method: Suture (control), Glubran 2 (n-butyl), Ifabond (n-hexyl), SafetySeal (n-butyl) and Evobond (n-octyl). At 14, 90 and 180 days after surgery, the recovered implants were examined to assess the host tissue integration, the macrophage response and the biomechanical strength. Results All the groups showed optimal host tissue incorporation regardless of the fixation procedure. Significantly increased levels of collagen 1 and collagen 3 gene expression (p<0.001) were observed at 14 days compared to the medium- and long-term durations, where the Suture and Glubran groups showed the highest expression of collagen 1. All the adhesives increased the macrophage reaction (p<0.001) compared to sutures at all implant times. Maximal macrophage response was observed in the short-term Glubran group (p<0.01) compared to the rest of the groups. Although SafetySeal and Evobond did not reach the biomechanical resistance of sutures at 14 days, all the adhesives did reach this level in the medium- to long-term periods, providing significantly higher resistance (p<0.05). Conclusions All the cyanoacrylates, despite inducing a significantly increased macrophage response versus sutures, showed optimal host tissue integration and long-term mechanical behavior; thus, they might be good choices for LW-PP mesh hernia repairs.
Group foraging, distance to cover and vigilance in the teal, Anas crecca


Abstract Abstract. Investment in vigilance with respect both to group foraging and distance to obstructive cover was studied in the teal. The effects of group size on vigilance level were examined after controlling for several potentially confounding variables. In a pair-wise analysis, investment in vigilance decreased with increasing group size. Distance to cover had a non-linear effect on vigilance; scan length was at its shortest at an intermediate distance and longest at the longest distance to obstructive cover. The association between group size and vigilance remained after controlling for the effect of distance to cover. Investment in vigilance also decreased with the proximity to neighbours. Group size per se did not affect the level of vigilance after controlling for the effect of neighbour distance, whereas neighbour distance had an effect of its own after controlling for group size and distance to cover.
Nonequilibrium exciton physics in hybrid lead-halide perovskites and anatase titanium dioxide

The strength of the electron-hole interaction in bulk semiconductors is not only determined by the dielectric environment, but also depends on the presence of other quasiparticles free charge carriers or phonons that populate the system. In the former case, a high density of charge carriers is expected to screen the Coulomb attractive force, eventually driving the transition from an insulating exciton gas to a conductive electron-hole plasma. In the case of lattice vibrations, the coupling between the exciton and the phonon field can give rise to significant modulations of the exciton amplitude and binding energy. Understanding how excitons react to these perturbations is of pivotal importance, as the strength of the Coulomb interaction affects the way light is absorbed and emitted, and determines how energy is converted and transported in several optoelectronic technologies. The aim of this thesis is to investigate the nonequilibrium exciton physics in highly-excited semiconductors. For this scope, we will combine different steady-state and ultrafast optical techniques, spectro-temporal analysis, and advanced theory calculations, with the aim of investigating the fundamental processes that lead to the renormalization of the excitonic states in hybrid lead-halide perovskites and titanium dioxide. In our experiments, we use an ultrashort laser pulse to excite the system above the fundamental energy gap; a broadband pulse then monitors the optical properties in the exciton spectral region at different time delays upon photoexcitation. The temporal evolution of the exciton parameters are retrieved via quantitative lineshape analysis, which is achieved by modelling the steady-state optical quantities and combining them with the time-resolved spectra. Thanks to this approach, we are able to elucidate the dynamics of exciton renormalization in hybrid perovskites and titanium dioxide in presence of elevated carrier densities and coherent strain pulses, and disentangle the many-body effects that lye at the origin of the observed optical nonlinearities.
Measurement of Diaphragmatic Electrical Activity by Surface Electromyography in Intubated Subjects and Its Relationship With Inspiratory Effort

BACKGROUND: Quantification of patient effort during spontaneous breathing is important to tailor ventilatory assistance. Because a correlation between inspiratory muscle pressure (Pmus) and electrical activity of the diaphragm (EAdi) has been described, we aimed to assess the reliability of surface electromyography (EMG) of the respiratory muscles for monitoring diaphragm electrical activity and subject effort during assisted ventilation. METHODS: At a general ICU of a single university-affiliated hospital, we enrolled subjects who were intubated and on pressure support ventilation (PSV) and were on mechanical ventilation for > 48 h. The subjects were studied at 3 levels of pressure support. Airway flow and pressure; esophageal pressure; EAdi; and surface EMG of the diaphragm (surface EAdi), intercostal, and sternocleidomastoid muscles were recorded. Respiratory cycles were sampled for off-line analysis. The Pmus/EAdi index (PEI) was calculated by relying on EAdi and surface EAdi (surface PEI) from an airway pressure drop during end-expiratory occlusions performed every minute. RESULTS: surface EAdi well correlated with EAdi and Pmus, in particular, after averaging breaths into deciles (R = 0.92 and R = 0.84). When surface PEI was used with surface EAdi, it provided a reliable estimation of Pmus (R = 0.94 in comparison with measured Pmus). CONCLUSIONS: During assisted mechanical ventilation, EAdi can be reliably monitored by both EAdi and surface EMG. The measurement of Pmus based on the calibration of EAdi was also feasible by the use of surface EMG.
Patient preferences in tinnitus outcomes and treatments: a qualitative study

Abstract In order to identify patient preferences in care for tinnitus an in depth grounded theory study was conducted. This consisted of interviews with 41 patients who had sought help for tinnitus across a range of locations and tinnitus services in England. Preferences for outcomes were for both the removal of the tinnitus and for improved coping and management of the tinnitus. Preferences for treatment were for individualized care, tailored information and for treatment to assist with psychological adjustment and auditory distraction. Adoption of treatments to manage tinnitus were based on a trial and error approach. Patients? preferences for individual treatments varied but were informed by the information they received. Information plays an important role in care for people with tinnitus. Patients hold individual preferences and require engagement in shared decision making.
Preservation of Bone Tissue Integrity with Temperature Control for In Situ SR-MicroCT Experiments

Digital volume correlation (DVC), combined with in situ synchrotron microcomputed tomography (SR-microCT) mechanics, allows for 3D full-field strain measurement in bone at the tissue level. However, long exposures to SR radiation are known to induce bone damage, and reliable experimental protocols able to preserve tissue properties are still lacking. This study aims to propose a proof-of-concept methodology to retain bone tissue integrity, based on residual strain determination using DVC, by decreasing the environmental temperature during in situ SR-microCT testing. Compact and trabecular bone specimens underwent five consecutive full tomographic data collections either at room temperature or 0 °C. Lowering the temperature seemed to reduce microdamage in trabecular bone but had minimal effect on compact bone. A consistent temperature gradient was measured at each exposure period, and its prolonged effect over time may induce localised collagen denaturation and subsequent damage. DVC provided useful information on irradiation-induced microcrack initiation and propagation. Future work is necessary to apply these findings to in situ SR-microCT mechanical tests, and to establish protocols aiming to minimise the SR irradiation-induced damage of bone.
TRIM59 knockdown inhibits cell proliferation by down-regulating the Wnt/β-catenin signaling pathway in neuroblastoma

Neuroblastoma is the most common tumor in children, with a very poor prognosis. It is urgent to identify novel biomarkers to treat neuroblastoma, together with surgery, chemotherapy, and radiation. Human tripartite motif 59 (TRIM59), a member of the TRIM family, has been reported to participate in several human tumors. However, the exact role of TRIM59 in neuroblastoma is unknown. In the present study, real-time PCR and Western blot were used to measure mRNA and protein levels of TRIM59 in four neuroblastoma cell lines and in neuroblastoma tissues. Lentiviruses targeting TRIM59 were used to up/down-regulate TRIM59 expression levels. Cell Counting Kit-8 and Annexin-V/PI were used to analyze cell proliferation and apoptosis in neuroblastoma cell lines. Our data showed that TRIM59 knockdown inhibits cell proliferation while inducing apoptosis in SH-SY5Y and SK-N-SH neuroblastoma cell lines. TRIM59 knockdown up-regulated expression of Bax and Bim and down-regulated levels of Survivin, β-catenin, and c-myc. Interestingly, the inhibition of cell proliferation caused by TRIM59 knockdown could be blocked by LiCl, which is an agonist of Wnt/β-catenin signaling pathway. In contrast, TRIM59 overexpression could increase cell proliferation, up-regulate Survivin, β-catenin and c-myc, down-regulate Bax and Bim, and these effects could be blocked by XAV939, which is an inhibitor of Wnt/β-catenin signaling pathway. In addition, TRIM59 was up-regulated and positively related with β-catenin in neuroblastoma tissues. In conclusion, TRIM59 was up-regulated in neuroblastoma, and TRIM59 knockdown inhibited cell proliferation by down-regulating the Wnt/β-catenin signaling pathway in neuroblastoma.
Humoral factors secreted from adipose tissue-derived mesenchymal stem cells ameliorate atherosclerosis in Ldlr−/− mice

AIMS Atherosclerosis is a chronic inflammatory disease of the vasculature. Mesenchymal stem cells (MSCs) exert immunomodulatory and immunosuppressive effects by secreting humoral factors; however, the intravascular MSC administration presents a risk of vascular occlusion. Here, we investigated both the effect of conditioned medium from cultured MSCs (MSC-CM) on atherosclerosis and the underlying mechanism. METHODS AND RESULTS Low-density lipoprotein receptor-deficient (Ldlr-/-) mice were fed a high-fat diet and received intravenous injections of either MSC-CM from adipose tissue-derived MSCs or control medium 2×/week for 13 weeks. MSC-CM treatment decreased the atherosclerotic plaque area in the aorta and aortic root of Ldlr-/- mice by 41% and 30%, respectively, with no change in serum lipoprotein levels. Histopathologically, the MSC-CM treatment decreased the expression of cell adhesion molecules (CAMs) and the accumulation of macrophages on the vascular walls. Extracellular vesicles (EVs) and supernatant (MSC-CM supernatant) were separated from the MSC-CM by ultracentrifugation. In tumour necrosis factor-α stimulated human aortic endothelial cells (HAOECs), both the MSC EVs and MSC-CM supernatant decreased CAM expression by inhibiting the mitogen-activated protein kinase (MAPK) and nuclear factor-kappa B (NFκB) pathways. In macrophages, the MSC-CM supernatant decreased the lipopolysaccharide-induced increases in M1 marker expression by inhibiting both the MAPK and NFκB pathways and increased the expression of M2 markers by activating the signal transducer and activator of transcription 3 pathway. In co-culture, inflamed HAOECs pretreated with MSC-CM supernatant and MSC EVs exhibited decreased monocyte adhesion to HAOECs. In addition, the neutralization of hepatocyte growth factor (HGF) in MSC-CM or MSC-CM supernatant attenuated their abilities to suppress monocyte adhesion to HAOECs in co-culture. CONCLUSION MSC-CM ameliorated atherosclerosis in Ldlr-/- mice and suppressed CAM expression and macrophage accumulation in the vascular walls. Humoral factors, including HGF and EVs from MSCs, hold promise as therapeutic agents to reduce the residual risk of coronary artery diseases.
Beyond frontal alpha: investigating hemispheric asymmetries over the EEG frequency spectrum as a function of sex and handedness

ABSTRACT Frontal alpha EEG asymmetry, an indirect marker of asymmetries in relative frontal brain activity, are widely used in research on lateralization of emotional processing. While most authors focus on frontal electrode pairs (e.g., F3/F4 or F7/F8), several recent studies have indicated that EEG asymmetries can also be observed outside the frontal lobe and in frequency bands other than alpha. Because the focus of most EEG asymmetry research is on the correlations between asymmetry and other traits, much less is known about the distribution of patterns of asymmetry at the population level. To systematically assess these asymmetries in a representative sample, we determined EEG asymmetries across the head in the alpha, beta, delta and theta frequency bands in 235 healthy adults. We found significant asymmetries in all four frequency bands and across several brain areas, indicating that EEG asymmetries are not limited to frontal alpha. Asymmetries were not modulated by sex. They were modulated by direction of hand preference, with stronger right-handedness predicting greater right (relative to left) alpha power, or greater left (relative to right) activity. Taken together, the present results show that EEG asymmetries other than frontal alpha represent markers of asymmetric brain function that should be explored further.
Site-specific glycosylation of Ebola virus glycoprotein by human polypeptide GalNAc-transferase 1 induces cell adhesion defects

The surface glycoprotein (GP) of Ebola virus causes many of the virus's pathogenic effects, including a dramatic loss of endothelial cell adhesion associated with widespread hemorrhaging during infection. Although the GP-mediated deadhesion depends on its extracellular mucin-like domain, it is unknown whether any, or all, of this domain's densely clustered O-glycosylation sites are required. It is also unknown whether any of the 20 distinct polypeptide GalNAc-transferases (ppGalNAc-Ts) that initiate mucin-type O-glycosylation in human cells are functionally required. Here, using HEK293 cell lines lacking specific glycosylation enzymes, we demonstrate that GP requires extended O-glycans to exert its deadhesion effect. We also identified ppGalNAc-T1 as largely required for the GP-mediated adhesion defects. Despite its profound effect on GP function, the absence of ppGalNAc-T1 only modestly reduced the O-glycan mass of GP, indicating that even small changes in the bulky glycodomain can cause loss of GP function. Indeed, protein-mapping studies identified a small segment of the mucin-like domain critical for function and revealed that mutation of five glycan acceptor sites within this segment are sufficient to abrogate GP function. Together, these results argue against a mechanism of Ebola GP–induced cell detachment that depends solely on ectodomain bulkiness and identify a single host-derived glycosylation enzyme, ppGalNAc-T1, as a potential target for therapeutic intervention against Ebola virus disease.
Changing attitudes: The impact of Expert by Experience involvement in Mental Health Nursing Education An international survey study

Reform to nursing education is essential to ensure future generations of nurses are strongly positioned to value, know, and deliver strength-based, recovery-oriented mental health practice. A promising pathway to effectively drive reform is the coproduction of curricula by nursing academics and people with lived experience of recovery from mental distress referred to as Experts by Experience. The Co-production in Mental Health Nursing Education (COMMUNE) project is an international collaboration for development and implementation of consumer coproduced curricula. This study evaluated the inclusion of Expert by Experience-led mental health nursing education on nursing students' attitudes to people labelled with mental illness, mental health nursing, and consumer participation. A repeated self-report measures design was implemented in Australia, Ireland, and Finland to ascertain level of generalizability of consumer involvement within undergraduate nursing programmes. Data were collected from nursing students (n = 194) immediately before and after the education module, using three self-report instruments on attitudes (Mental Health Nurse Education Survey, Consumer Participation Questionnaire, and Opening Minds Scale). Data were analysed using descriptive and inferential statistics. Eighty-nine per cent of the 27 points of change reflected more favourable and accepting attitudinal change. Of these, 41% were significant at Bonferroni adjusted alpha of 0.0025. There was a statistically significant increase in preparedness for practice in the mental health field in each of the three countries. The most pronounced change is related to the social and systemic inclusion of people with a diagnostic label and recovery-oriented care more broadly.
Assessment of scalability of evidence-based innovations in community-based primary health care: a cross-sectional study.

BACKGROUND In 2013, the Canadian Institutes of Health Research funded 12 community-based primary health care research teams to develop evidence-based innovations. We aimed to explore the scalability of these innovations. METHODS In this cross-sectional study, we invited the 12 teams to rate their evidence-based innovations for scalability. Based on a systematic review, we developed a self-administered questionnaire with 16 scalability assessment criteria grouped into 5 dimensions (theory, impact, coverage, setting and cost). Teams completed a questionnaire for each of their innovations. We analyzed the data using simple frequency counts and hierarchical cluster analysis. We calculated the mean number and standard deviation (SD) of innovations that met criteria within each dimension that included more than 1 criterion. The analysis unit was the innovation. RESULTS The 11 responding teams evaluated 33 evidence-based innovations (median 3, range 1-8 per team). The innovations focused on access to care and chronic disease prevention and management, and varied from health interventions to methodological innovations. Most of the innovations were health interventions (n = 21), followed by analytical methods (n = 4), conceptual frameworks (n = 4), measures (n = 3) and strategies to build research capacity (n = 1). Most (29) met criteria in the theory dimension, followed by impact (mean 22.3 [SD 5.6] innovations per dimension), setting (mean 21.7 [SD 8.5]), cost (mean 17.5 [SD 2.1]) and coverage (mean 14.0 [SD 4.1]). On average, the innovations met 10 of the 16 criteria. Adoption was the least assessed criterion (n = 9). Most (20) of the innovations were highly ranked for scalability. INTERPRETATION Scalability varied among innovations, which suggests that readiness for scale up was suboptimal for some innovations. Coverage remained largely unaddressed; further investigation of this critical dimension is necessary.