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Johannesen Joyner opublikował 1 rok, 3 miesiące temu
Background Performing physical activity whilst exposed to nature can improve health. However, there is little evidence of its impact on stress outcomes. The aim of this study was to examine the influence of the visual exercise environment on the response to a psychosocial stressor.Methods Eighteen participants were randomized to one of three conditions i. nature; ii. built or; iii. control condition. Participants exercised for 30 min on a treadmill at 50% of their VO2max whilst viewing a video of either a natural or built environment or a blank screen. Following the exercise, participants completed the Trier Social Stress Test (TSST), a standardized laboratory stressor. Salivary samples were collected before, during and after the TSST to calculate cortisol reactivity and recovery.Results One-way ANOVA revealed a significant effect of viewing condition on cortisol reactivity [F(2, 11) = 4.686, p = .034; n2 p = .460]; with significantly lower reactivity in the built compared to the nature condition (p = .027, d = 1.73). There was no effect of condition on cortisol recovery (p = .137; n2 p = .257).Conclusions In the context of the adverse health impact of lower (i.e., blunted) cortisol responding, these findings could indicate a negative impact of the built environment on stress responses.Neuropsychological impairments are evaluated using subjective measures and objective tests, although their relationship remains unclear. This is likely because objective data is interpreted in terms of absolute level of functioning (e.g., high average, average, low average) while subjective complaints are interpreted in terms of relative decline from premorbid levels (e.g., mild, moderate, severe). The current study calculated objective indices of estimated degree of relative decline (i.e., difference between current cognitive ability and estimated premorbid level) to compare objective and subjective indices of relative decline for military service members with mild traumatic brain injury (mTBI). Contrary to hypotheses, more indices of absolute level of functioning were significantly correlated with subjective neuropsychological (i.e., Neurobehavioral Symptom Inventory) and psychological complaints (e.g., Personality Assessment Inventory) than relative decline scores. The results suggest stronger cognitive abilities may be associated with greater cognitive reserve or emotional resilience and, thereby, less subjective complaints for individuals with TBI, regardless of the extent of neuropsychological decline experienced.Aim Elucidate the antifungal efficacy of biologically synthesized silver nanoparticles with ethanolic propolis extract (AgNPs PE) against the planktonic forms and biofilms of clinically important fungi. Materials & methods AgNPs were synthesized, characterized and evaluated for cytotoxicity, mutagenicity and antimicrobial activity. Results AgNPs PE displayed a colloidal appearance, good stability and size of 2.0-40.0 nm. AgNPs PE demonstrated lower cytotoxicity and nonmutagenic potential. In addition, AgNPs PE displayed antifungal properties against all tested isolates, inhibiting growth at concentrations lower than the cytotoxic effect. Mature biofilms treated for 48 h with AgNPs PE showed significant reduction of viable cells, metabolic activity and total biomass. Conclusion This is the first time that AgNPs have been synthesized from an ethanolic extract of propolis only, proving antifungal, antibiofilm, atoxic and nonmutagenic properties.There is broad consensus on the utility of complex pictures in the assessment of simultanagnosia in patients with acquired brain injury (ABI). To overcome various shortcomings of current instruments, we have developed the Birthday Party Test (BPT); a picture description test that contains a neutral scene, a balanced representation of events, and provides clear instructions and a scoring-aid. We have applied the BPT in a large group of patients with ABI (n = 502) and in an age-matched healthy control group (n = 194). Our results show that performance on the BPT was associated with a range of descriptive, neuropsychological and clinical characteristics and that poor test performance appeared to be more common in patients with etiologies that have an increased risk of bilateral damage. Furthermore, we assume a high correspondence between test performance on the BPT and the assessor’s clinical judgment of likely having simultanagnosia in preliminary analyses. This study shows the potential usefulness of the BPT to support diagnostic decision making in simultanagnosia. The BPT is made freely available to facilitate its broad application in the clinical assessment of patients with visual impairment and to enable a further evaluation of its utility and validity in future studies.Background Direct-acting oral anticoagulants are indicated for the treatment of nonvalvular atrial fibrillation, but their use in patients after undergoing cardiac surgery is poorly defined despite a high prevalence of postoperative atrial fibrillation in this population. Methods Patients diagnosed with postoperative atrial fibrillation were prospectively randomized to warfarin or apixaban. Safety, efficacy, and economic outcomes were evaluated until their 4- to 6-week postoperative appointment. Results While this pilot study was not powered to determine a difference in safety or efficacy, adverse event rates were similar to the published literature. It was noted that a patient’s course of therapy when utilizing apixaban was significantly less costly than warfarin when including medication, bridging, and laboratory expenses. Conclusion Apixaban and warfarin both appeared to be safe and effective for anticoagulation throughout the duration of this pilot study in treating postoperative atrial fibrillation after coronary artery bypass grafting. Apixaban was associated with significantly less expense when bridging and monitoring costs were included in addition to medication expense.Purpose To report the individual retinal layer thickness in healthy subjects using wide-field optical coherence tomography. Methods This was a prospective, cross-sectional study involving healthy subjects. A custom-designed semiautomated segmentation algorithm was used to split the retinal layers in seven bands, and individual retinal layer thicknesses were measured in horizontal (nasal, macular, and temporal segments) and vertical meridians (superior, macular, and inferior segments). The variation in retinal thickness was analyzed in different segments at an interval of 1 mm from reference points. Regression analysis was performed to identify the factors affecting retinal thickness. Results Twenty eyes of 20 healthy subjects with mean age of 28.9 ± 6.3 years were analyzed. Overall, nasal and superior segments (mean ± standard deviation 279.6 ± 17.0 and 234.4 ± 19.2 µm) had maximum and minimum retinal thicknesses, respectively. A total of seven bands were delineated in each optical coherence tomography b scan in each segment. Retinal nerve fiber layer was thickest immediately nasal to optic disk margin in horizontal scan (72.4 ± 32.4 µm) and near the vascular arcades in vertical meridian. Outer plexiform layer, external limiting membrane-ellipsoid zone and interdigitation zone-retinal pigment epithelium-Bruch’s complex showed significant variation in both horizontal and vertical meridians (all p values less then 0.05). Macular segment in both meridians showed the highest coefficient of variation. Age was the only significant factor affecting retinal thickness in multiple regression analysis (p = 0.001). Conclusions Wide-field optical coherence tomography shows significant regional variation in overall and individual retinal layer thicknesses in macular and peripheral areas in healthy eyes with the highest variation in macular segment.This study aimed to evaluate the effect of an outpatient systemic hypertension program and associated factors with attending recommended follow-up visit. All visits were tracked in the program, 2011 to 2018. We examined patient characteristics by follow-up status and changes in systolic blood pressure (SBP) and the risk of hypertension in follow-up patients using a mixed-effects regression model. Among 310 patients with first visits, 113 patients returned for a follow-up visit. Patients who did not attend a follow-up were older and less likely to have a severe chronic condition or a family history of hypertension than followed-up patients. The risk of hypertension was significantly reduced by the number of follow-up visits (odds ratio = 0.53, 95% confidence interval = 0.31-0.92). Adolescent SBP and body mass index percentiles decreased with more follow-up visits. As the risk of hypertension is significantly reduced with follow-up visits, additional effort should be made to improve the likelihood of follow-up attendance.Purpose To describe a case of retinopathy as onset manifestation of chronic myeloid leukemia (CML), successfully treated with leukapheresis and medical therapy. Methods A 28-year-old male patient presented complaining painless acute visual impairment in his right eye (RE). He reported moderate asthenia and episodes of night sweats during the previous month. His past medical history was unremarkable. BCVA at presentation was 20/80 in RE and 20/32 in left eye (LE). Fundus examination revealed venous congestion, diffuse Roth spots, and whitish macular infiltrates in both eyes. OCT showed hyperreflective foveal infiltrates, in both eyes. Blood test showed markedly elevated white blood cells (WBCs) count (430 × 103/mm3). Clinical-instrumental examination revealed hepatosplenomegaly. These features were consistent with CML. The patient was treated with leukapheresis and nilotinib. Results After 2 weeks of treatment, the WBCs count dropped (71 × 103/mm3), and the patient reported subjective improvement of symptoms. At 1-month follow-up, BCVA and retinopathy signs were improved in both eyes. OCT showed the almost complete resolution of foveal infiltrates with ellipsoid zone focal defects. At 4-months follow-up, we observed complete resolution of retinopathy. BCVA was 20/32 in RE and 20/25 in LE. OCT showed the persistence of ellipsoid zone focal defects in RE and complete anatomical restoration in LE. At 6-months follow-up, the patient was clinically well and his WBCs count was normal. Conclusion In our case, the CML-related retinopathy represented the onset sign of the underlying systemic pathology, leading to proper management and treatment, with hematological normalization and resolution of the retinopathy.Purpose To evaluate the use of the resorbable polylactic acid polymer implants (Resorb X) in the management of orbital floor blow-out fractures as regards safety, cosmetic, and functional results. Methods In a prospective, interventional case series, 22 patients with traumatic blow-out floor fractures underwent lower fornix transconjunctival repair using polylactic acid implant insertion over the defect without fixation. Orbital imaging was done preoperatively, at 1 month and 1 year postoperatively with orbital computed tomography with 2 mm cuts of axial, sagittal, and coronal scans. Outcome measures included the maximum vertical height of the orbit at the fracture plane and its changes over time. Results At the final follow-up, both limitation of elevation and diplopia improved in 82% of cases, while 63.6% of cases showed improvement of enophthalmos. Radiological restoration of the orbital vertical height was recorded in 100% of cases without implant displacement at 1 month. However, after 1 year, a significant floor bowing was found in 45.


