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Vang posted an update 9 months, 2 weeks ago
To the best of our knowledge, our analysis represents the first view of the global distribution of RE-CmeABC, which is horizontally transferable and diffused regionally in a clonal manner. The close relationship of RE-cmeABC-positive C. jejuni from poultry and humans supports the potential of these isolates for zoonotic transmission. Overexpressed RE-CmeABC in C. jejuni will increase the fitness of the corresponding bacteria and be of advantage under antimicrobial selection.
To the best of our knowledge, our analysis represents the first view of the global distribution of RE-CmeABC, which is horizontally transferable and diffused regionally in a clonal manner. The close relationship of RE-cmeABC-positive C. jejuni from poultry and humans supports the potential of these isolates for zoonotic transmission. Overexpressed RE-CmeABC in C. jejuni will increase the fitness of the corresponding bacteria and be of advantage under antimicrobial selection.Epidemiological and experimental studies suggest that a disease-aggravating neuroinflammatory process is present at preclinical stages of Alzheimer’s disease. Given that individuals with Down syndrome are at increased genetic risk of Alzheimer’s disease and therefore develop the spectrum of Alzheimer’s neuropathology in a uniform manner, they constitute an important population to study the evolution of neuroinflammation across the Alzheimer’s continuum. Therefore, in this cross-sectional study, we characterized the brain inflammatory profile across the lifespan of individuals with Down syndrome. read more Microglial morphology and inflammatory cytokine expression were analysed by immunohistochemistry and electrochemiluminescent-based immunoassays in the frontal cortex from foetuses to adults with Down syndrome and control subjects (16 gestational weeks to 64 years), totalling 127 cases. Cytokine expression in mixed foetal primary cultures and hippocampus of adults with Down syndrome, as well as the effects of sex on cyols n = 7). Older adults with Down syndrome (39-68 years, Down syndrome n = 22, controls n = 16) displayed reduced levels of interleukin-10, interleukin-12p40, interferon-gamma and tumour necrosis factor-alpha. Microglia displayed larger somas and shorter processes. Moreover, an increase in dystrophic microglia and rod-like microglia aligning to neurons harbouring tau pathology were also observed. Sex stratification analyses revealed that females with Down syndrome had increased interleukin-6 and interleukin-8 levels compared to males with Down syndrome. Finally, multivariate projection methods identified specific cytokine patterns among individuals with Down syndrome. Our findings indicate the presence of an early and evolving neuroinflammatory phenotype across the lifespan in Down syndrome, a knowledge that is relevant for the discovery of stage-specific targets and for the design of possible anti-inflammatory trials against Alzheimer’s disease in this population.
recent data show that there is limited evidence and guidance regarding the best practices for the integration of palliative care (PC) and end-of-life (EOL) post-stroke. The purpose of this meta-synthesis is to understand the PC/EOL experiences after a stroke.
a meta-synthesis was conducted to answer the following research question-What are post-stroke PC/EOL experiences from the perspectives of patients, families and healthcare professionals (HCPs)? This approach was completed through two main phases-a systematic search and appraisal of the literature and reciprocal translation with interpretive triangulation of the extracted data. Databases searched were MEDLINE, EMBASE, PsycINFO, Joanna Briggs Institute and CINAHL databases (from their inception to April 2020). After data were extracted, a qualitative exploratory design was used to evaluate the PC/EOL in post-stroke experiences.
the search identified 696 studies. A total of 14 studies were included in this meta-synthesis as they satisfied our eligibility criteria. Uncertainty post-stroke was the overarching main theme that emerged across post-stroke PC/EOL experiences. Within this theme of uncertainty, opportunities to decrease uncertainty emerged from two interdependent themes-presence of cohesive communication and shared dynamic decision process for both families and HCPs.
to mitigate the degree of uncertainty post-stroke, HCPs should be present, provide clear direct communication and incorporate the value-based goals of care within their medical treatment plan. These findings suggest that future research is needed to focus on how PC approaches can be integrated into stroke care programmes.
to mitigate the degree of uncertainty post-stroke, HCPs should be present, provide clear direct communication and incorporate the value-based goals of care within their medical treatment plan. These findings suggest that future research is needed to focus on how PC approaches can be integrated into stroke care programmes.The establishment of O2 gradients in liquid columns by bacterial metabolic activity produces a spatially-structured environment. This produces a high-O2 region at the top that represents an un-occupied niche which could be colonised by biofilm-competent strains. We have used this to develop an experimental model system using soil-wash inocula and a serial-transfer approach to investigate changes in community-based biofilm-formation and productivity. This involved 10 transfers of mixed-community or biofilm-only samples over a total of 10-60 days incubation. In all final-transfer communities the ability to form biofilms was retained, though in longer incubations the build-up of toxic metabolites limited productivity. Measurements of microcosm productivity, biofilm-strength and attachment levels were used to assess community-aggregated traits which showed changes at both the community and individual-strain levels. Final-transfer communities were stratified with strains demonstrating a plastic phenotype when migrating between the high and low-O2 regions. The majority of community productivity came from the O2-depleted region rather than the top of the liquid column. This model system illustrates the complexity we expect to see in natural biofilm-forming communities. The connection between biofilms and the liquid column seen here has important implications for how these structures form and respond to selective pressure.