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For a total four months data collection period, the mean deviation between requested and measured 6DOF couch shifts was 0.6mm and 0.2°. Errors on field size were smaller than 1mm for 97.7% of the 324 data points. CONCLUSION Results demonstrate that the linac equipped with a 6DOF robotic positioner and CBCT imaging satisfies requirements for SRT. Our methodology, based on a modified Winston-Lutz quality control, allowed us to quantitatively assess end-to-end accuracy of a linac in order to safely deliver SRT. Immunological memory provides long-term protection against pathogen re-infection and is the foundation for successful vaccination. We have previously shown an antigen-specific recall response in nurse sharks almost one year after primary exposure. Herein, we extend the time between prime and successful recall to >8 years, the longest period for which immunological memory has been shown in any non-mammalian vertebrate. We confirm that antigen binding is mediated by monomeric IgM and IgNAR, but not pentameric IgM, in both the primary and recall phases. Our inability to find target-binding clones in recombinant VNAR expression libraries suggests that, at least in this instance, antigen-specific memory cells comprise a small fraction of the IgNAR-positive B cells in epigonal and spleen. Further, that the few memory cells present can generate a robust antigen-specific IgNAR titer following re-stimulation. Our results continue to challenge the long-held, but erroneous, belief that the shark adaptive immune system is 'primitive' when compared to that of mammals. BACKGROUND Disease-related malnutrition is a significant problem in hospitalized patients, with high prevalence rates depending on the studied population. Internal Medicine wards are the backbone of the hospital setting. However, prevalence and determinants of malnutrition in these patients remain unclear. We aimed to determine the prevalence of malnutrition in Internal Medicine wards and to identify and characterize malnourished patients. https://www.selleckchem.com/products/dibutyryl-camp-bucladesine.html METHODS A cross-sectional observational multicentre study was performed in Internal Medicine wards of 24 Portuguese hospitals during 2017. Demographics, hospital admissions during the previous year, type of admission, primary diagnosis, Charlson comorbidity index, and education level were registered. Malnutrition at admission was assessed using Patient-Generated Subjective Global Assessment (PG-SGA). Demographic characteristics were compared between well-nourished and malnourished patients. Logistic regression analysis was used to identify determinants of malnutrition. RESULTS 729 participants were included (mean age 74 years, 51% male). Main reason for admission was respiratory disease (32%). Mean Charlson comorbidity index was 5.8 ± 2.8. Prevalence of malnutrition was 73% (56% moderate/suspected malnutrition and 17% severe malnutrition), and 54% had a critical need for multidisciplinary intervention (PG-SGA score ≥9). No education (odds ratio [OR] 1.88, 95% confidence interval [CI] 1.16-3.04), hospital admissions during previous year (OR 1.53, 95%CI 1.05-2.26), and multiple comorbidities (OR 1.22, 95%CI 1.14-1.32) significantly increased the odds of being malnourished. CONCLUSIONS Prevalence of malnutrition in the Internal Medicine population is very high, with the majority of patients having critical need for multidisciplinary intervention. Low education level, admissions during previous year, and multiple comorbidities increase the odds of being malnourished. V.BACKGROUND AND OBJECTIVES The use of primary care data gathered from electronic health records in local practices could be an important building block for the future of health services research. However, the risks and reservations associated with using this data for research purposes should not be underestimated. We show the data protection and privacy problems that may arise through secondary analysis of routine primary care data and describe the technical solutions that are available to address these concerns - as a trust-building measure. METHODS We screened 40 variables that are deemed important for documentation in the electronic health records of primary care physicians and rated the risk of patient re-identification when using these records from routine medical data for research purposes. The criteria used to rate the risk of re-identification were "expert perception" (inferences of a professional observer of phenotypical characteristics which are documented in the 40 variables), "researchable additionr very old individuals when these age groups are seldom represented in the practice. DISCUSSION Routine health data are, in principle, sensitive data. Knowledge about the variables in primary care data gathered from electronic health records in local practices and the evaluation of this data allow us to more accurately estimate the risk of re-identification for the persons concerned. In particular, chronic diagnoses and/or diagnoses in long text, calendar dates for patient contacts and therapies bear a high risk of re-identification. Technical measures such as removing data, masking values and coding should make re-identification considerably more difficult. There will always be a remaining risk of re-identification which should be openly discussed to counteract concerns about a lack of data protection or a sweeping critique of digitization in healthcare. Charcot-Marie-Tooth (CMT) disease, a hereditary motor and sensory neuropathy, has subtypes with varied inheritance patterns and phenotypic presentation. Subtypes additionally vary by genetic variants in a number of genes. Pathogenic variants in the VCP gene have newly been associated with CMT type 2. We present a family with CMT type 2 with a novel heterozygous VCP variant and phenotypic variability between the proband, his brother, and father. Mutations in heat shock protein B8 were initially identified in inherited neuropathies and were more recently found to cause a predominantly distal myopathy with myofibrillar pathology and rimmed vacuoles. Rare patients also had proximal weakness. Only very few pathogenic variants have been identified in HSPB8. Disruption of the chaperone activity of heat shock protein B8 impairs chaperone-assisted selective autophagy and results in protein aggregation. We report a 23-year-old patient who presented with a 4-year history of predominantly proximal lower limb weakness due to a novel variant in HSPB8. The creatine kinase level was mildly elevated. Electrodiagnostic studies demonstrated a proximal-predominant myopathy without evidence of neuropathy, and muscle histopathology revealed rimmed vacuoles and myofibrillar protein aggregates. Whole exome sequencing identified a de novo frameshift variant in the C-terminal region of HSPB8 (c.577_580dupGTCA, p.Thr194Serfs*23). This case demonstrates that HSPB8-related disorders can present with early onset limb-girdle myopathy without associated neuropathy.
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