Activity

  • Jonsson Kristensen posted an update 1 day, 4 hours ago

    Since February 21 2020, when the Italian National Institute of Health (Istituto Superiore di Sanità-ISS) reported the first autochthonous case of infection, a dedicated surveillance system for SARS-CoV-2-positive (COVID+) cases has been created in Italy. These data were cross-referenced with those inside the Information Transplant System in order to assess the cumulative incidence (CI) and the outcome of SARS-COV-2 infection in solid organ transplant recipients (SOTRs) who are assumed to be most at risk. We compared our results with those of COVID+ nontransplanted patients (Non-SOTRs) with follow-up through September 30, 2020. The CI of SARS-CoV-2 infection in SOTRs was 1.02%, higher than in COVID+ Non-SOTRs (0.4%, p less then .05) with a greater risk in the Lombardy region (2.89%). The CI by type of organ transplant was higher for heart (CI 1.57%, incidence rate ratio [IRR] 1.36) and lower for liver (CI 0.63%, IRR 0.54). The 60-day CI of mortality was 30.6%, twice as much that of COVID+ Non-SOTRs (15.4%) with a 60-day gender and age adjusted odds ratio (adjusted-OR) of 3.83 for COVID+ SOTRs (95% confidence interval [3.03-4.85]). USP25/28 inhibitor AZ1 ic50 The lowest 60-day adjusted-OR was observed in liver SOTRs (OR 0.46, 95% confidence interval [0.25-0.86]). More detailed studies on disease management and evolution will be necessary in these patients at greater risk of COVID-19.

    The aim of this study was to investigate the influence of real implant-bed-specific radiation doses on peri-implant tissue health in head and neck cancer (HNC) patients after radiotherapy.

    Specific radiation doses in the area of 81 implants, in 15 irradiated HNC patients, were analyzed by matching data from the radiotherapy planning system with those of three-dimensional follow-up scans after implantation. Peri-implant bone resorption was measured radiographically after 1 and 3years, and peri-implant tissue health was evaluated clinically. Individual parameters, such as age, gender, and localization, regarding the implant-specific radiation dose distribution were analyzed statistically.

    The mean implant-bed-specific radiation dose was high, with 45.95Gy to the mandible and 29.02Gy to the maxilla, but significantly lower than the mean total dose to the tumor bed. Peri-implant bone resorption correlated with local inflammation and plaque. After 1year, women temporarily showed significantly more bone loss than men and implant-specific radiation dose had a significant impact on peri-implant bone loss after 3years.

    The presented method is a feasible option to define precise implant-bed-specific radiation doses for research or treatment planning purposes. Implant-based dental restoration after radiotherapy is a relatively safe procedure, but a negative radiation dose-dependent long-term effect on peri-implant bone resorption calls for interdisciplinary cooperation between surgeons and radio-oncologists to define high-risk areas.

    The presented method is a feasible option to define precise implant-bed-specific radiation doses for research or treatment planning purposes. Implant-based dental restoration after radiotherapy is a relatively safe procedure, but a negative radiation dose-dependent long-term effect on peri-implant bone resorption calls for interdisciplinary cooperation between surgeons and radio-oncologists to define high-risk areas.

    The natural history of childhood rhinitis is not well described.

    This study aimed to identify different rhinitis trajectories in early childhood and their predictors and allergic associations.

    Rhinitis symptoms were ascertained prospectively from birth until 6years using standardized questionnaires in 772 participants. Rhinitis was defined as one or more episodes of sneezing, runny and/or blocked nose >2weeks duration. Latent trajectories were identified using group-based modelling, and their predictive risk factors and allergic associations were examined.

    Three rhinitis trajectory groups were identified 7.6% (n=59) were termed early transient rhinitis, 8.6% (n=66) late transient rhinitis, and 6.6% (n=51) persistent rhinitis. The remaining 77.2% (n=596) were classified as non-rhinitis/reference group. Early transient rhinitis subjects were more likely of Indian ethnicity, had siblings, reported childcare attendance, early wheezing and eczema in the first 3years of life. Late transient rhinitis was nitis is strongly associated with atopic risk and likely represents the typical trajectory associated with allergic disorders. Allergic rhinitis symptoms may commence as early as the first year of life and may inform development of early interventive strategies.Emerging evidence suggests functional roles for microglia in the healthy, mature nervous system. However, we know little of the cellular density and ramified morphology of microglia in sensory systems, and even less of their inter-relationship with inhibitory neurons. We therefore conducted fluorescent multi-channel immunohistochemistry and confocal microscopy in guinea pigs of both sexes for Iba1, GAD67, GFAP, calbindin, and calretinin. We explored these markers in the inferior colliculi (IC), which contain sub-regions specialized for different aspects of auditory processing. First, we found that while the density of Iba1+ somata is similar throughout the IC parenchyma, Iba1+ microglia in dorsal cortex are significantly more ramified than those in the central nucleus or lateral cortex. Conversely, Iba1+ ramifications in ventral central nucleus, a region with the highest density of GAD67+ (putative GABAergic) neurons in IC, are longer with fewer ramifications. Second, we observed extensive abutments of ramified Iba1+ processes onto GAD67+ somata throughout the whole IC and developed novel measures to quantify these. Cluster analyses revealed two novel sub-types of GAD67+ neuron that differ in the quantity of Iba1+ somatic abutments they receive. Unlike previous classification schemes for GAD67+ neurons in IC, these clusters are not related to GAD67+ soma size. Taken together, these data demonstrate that microglial ramifications vary between IC sub-regions in the healthy, adult IC, possibly related to the ongoing demands of their niche. Furthermore, Iba1+ abutments onto neuronal somata are a novel means by which GAD67+ neurons can be classified.Patient portals promote self-management, but require skills with electronic health information which can be measured by a patient’s eHealth literacy. We aimed to describe eHealth literacy among a population of kidney transplant (KT) and liver transplant (LT) recipients and to investigate the relationship between eHealth literacy and Web-based patient portal utilization. We conducted phone surveys (August 2016-March 2017) among 178 KT and 110 LT recipients at two large transplant centers, including the eHealth Literacy Scale (eHEALS) and items assessing routine portal usage. Portal users were defined as routine if usage was every day, weekly, or monthly. The mean eHEALS score was 30.9 (SD 5.4), and 45.4% routinely used the patient portal more than a few times per month. Routine users had higher eHealth literacy than non-routine users and non-users (31.97 vs. 29.97 vs. 28.20, p less then .001). Routine users had higher eHealth literacy scores compared with non-users after adjusting for transplant organ type, age, educational level, employment status, mobile Internet access, and transplant center (OR 1.10, 95% CI 1.03-1.17). KT and LT recipients who routinely use patient portals have high eHealth literacy compared with other diseased populations, which should be leveraged by encouraging routine usage to improve post-transplant health and medication adherence.We investigated the variation in tree fine root traits and their functional diversity along a local topographic gradient in a Neotropical montane forest to test if fine root trait variation along the gradient is consistent with the predictions of the root economics spectrum on a shift from acquisitive to conservative traits with decreasing resource supply. We measured five fine root functional traits in 179 randomly selected tree individuals of 100 species and analysed the variation of single traits (using Bayesian phylogenetic multilevel models) and of functional trait diversity with small-scale topography. Fine roots exhibited more conservative traits (thicker diameters, lower specific root length and nitrogen concentration) at upper slope compared with lower slope positions, but the largest proportion of variation (40-80%) was explained by species identity and phylogeny. Fine root functional diversity decreased towards the upper slopes. Our results suggest that local topography and the related soil fertility and moisture gradients cause considerable small-scale variation in fine root traits and functional diversity along tropical mountain slopes, with conservative root traits and greater trait convergence being associated with less favourable soil conditions due to environmental filtering. We provide evidence of a high degree of phylogenetic conservation in fine root traits.

    This study investigated the characteristics of a new shielded diode detector, microSilicon X (model 60022 MSX), for small-field and large-field dosimetry.

    The percent depth dose (PDD), beam profiles, detector output factor (OF

    ), temperature dependence, dose rate dependence, dose-per-pulse (DPP) dependence, and dose-response linearity of MSX were evaluated in Cyberknife and TrueBeam photon beams and compared with various detectors including microDiamond (PTW model 60019 MD), Sun Nuclear EDGE detector, Photon diode (PTW model 60016 PD), and semiflex ionization chamber (PTW model 31010 IC).

    For field sizes ranging from 50×50mm

    to 400×400mm

    , MSX-measured OF

    values were within 1% of the IC-measured values. For the CyberKnife small fields, the maximum difference between the MSX-measured OF

    and the MD-measured field output factor (Ω) was 4.0%, while the maximum differences were 8.8% and 10.9% for PD and EDGE, respectively. MSX showed a stable response within 0.7% for water temperatures of 5°C to 34er-response for small fields. The OFdet values measured by MSX were approximately in-between those measured by MD and PD. MSX showed stable responses against water temperature, dose rate, and DPP variations and provided suitable data for a wide range of field sizes. However, careful attention is required for measurements of OFdet for field sizes of less then 10 × 10 mm2 and PDD for field sizes of ≥200 × 200 mm2 .Left ventricular assist devices (LVADs) have revolutionized the care of patients with advanced heart failure, yet still require concomitant medications in order to achieve the best possible clinical outcomes. Since the outset of routine placement of durable, continuous-flow LVADs, much of the medication management of these patients to date has been based on International Society of Heart and Lung Transplantation (ISHLT) guidance, most recently published in 2013. Since 2013, numerous multidisciplinary pharmacotherapy publications have increased the LVAD community’s understanding of best practices with respect to medications. We identified the major domains of LVAD medication management and conducted a comprehensive search of US National Library of Medicine MEDLINE® database using keywords chosen to identify medication-related publications of significance dated 2013 or later. Trials pertaining to the HeartMate II™ and the HeartMate™ 3 LVADs (Abbott, Chicago, IL) and the HeartWare™ HVAD™ System (Medtronic, Minneapolis, MN) were chosen for inclusion.