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  • McFarland Agger heeft een update geplaatst 3 dagen, 20 uren geleden

    First, ETDBS and ET exhibited greater dysmetria than HC and dysmetria did not correlate with tremor (R2 0.2). Interpretation We demonstrate that dysmetria can be quantified independent of tremor using fast, reverse at target goal-directed movements. These results have important implications for the understanding of ET and other cerebellar and tremor disorders. Future research should examine the neurophysiological mechanisms underlying each symptom and characterize their independent contribution to disability. This article is protected by copyright. All rights reserved.Objective Silk sericin is a natural polymer with potential utility in biomedical and biotechnological applications. Recombinantly expressed sericin ensures a source of pure protein with no contamination and with multiple properties when expressed as a fusion protein. Hence, the present paper aims to recombinantly express a functional silk sericin fusion protein. Results In order to develop a more effective sericin protein, we have attempted to recombinantly express a part of sericin sequence, which represents a highly conserved and internally repetitive unit of the sericin1 protein, and its fusion with cecropin B, a potent antimicrobial peptide. Both difficult-to-express proteins were expressed in Escherichia coli and purified by nickel-charged affinity resin. Further, functional assay demonstrated that both proteins were individually active against Gram-positive and negative bacteria, with enhanced bactericidal activity observed in sericin-cecropin B fusion protein. Conclusions To our knowledge, this is the first report not only on the recombinant expression of sericin as a fusion protein but also the bactericidal possibility of the 38-amino acid serine-rich motif of sericin protein. read more We also discuss the potential biomedical and biotechnological applications of this sericin hybrid protein.Type 2 diabetes has a strong association with the development of cardiovascular disease, which is grouped as diabetic heart disease (DHD). DHD is associated with the progressive loss of cardiovascular cells through the alteration of molecular signalling pathways associated with cell death. In this study, we sought to determine whether diabetes induces dysregulation of miR-532 and if this is associated with accentuated apoptosis. RT-PCR analysis showed a significant increase in miR-532 expression in the right atrial appendage tissue of type 2 diabetic patients undergoing coronary artery bypass graft surgery. This was associated with marked downregulation of its anti-apoptotic target protein apoptosis repressor with caspase recruitment domain (ARC) and increased TUNEL positive cardiomyocytes. Further analysis showed a positive correlation between apoptosis and miR-532 levels. Time-course experiments in a mouse model of type 2 diabetes showed that diabetes-induced activation of miR-532 occurs in the later stage of the disease. Importantly, the upregulation of miR-532 preceded the activation of pro-apoptotic caspase-3/7 activity. Finally, inhibition of miR-532 activity in high glucose cultured human cardiomyocytes prevented the downregulation of ARC and attenuated apoptotic cell death. Diabetes induced activation of miR-532 plays a critical role in accelerating cardiomyocytes apoptosis. Therefore, miR-532 may serve as a promising therapeutic agent to overcome the diabetes-induced loss of cardiomyocytes.Background Accurately diagnosing gastroparesis relies upon gastric emptying scintigraphy (GES) being performed correctly. Jointly published protocol guidelines have long been available; however, the extent to which practitioners adhere to these guidelines is unknown. Aims This study aimed to assess national compliance with established GES protocol guidelines. Methods We developed a questionnaire addressing the key protocol measures outlined in the Consensus Recommendations for Gastric Emptying Scintigraphy. Survey questions addressed patient information collection (15), patient preparation and procedure protocol (16), meal content and preparation (7), imaging (3), interpretation (4), reporting (7), and institutional demographic data (7). The anonymous questionnaire was distributed electronically to members of the Society of Nuclear Medicine and Medical Imaging (SNMMI) and non-member recipients of the SNMMI daily email newsletter. One response per medical institution was permitted. Results A total of 121 out of 872 potential medical institutions (MI) responded (13.9%); 49 (40.4%) were academic/teaching medical centers. The annual number (mean) of GES procedures was 199.9 (range 5-2000 GES/year). On average, MI performed 33.5/52 (64%) of protocol measures according to guidelines while academic medical centers performed 31.5/52 (61%) of protocol measures according to guidelines. Only 4 out of 88 MI (4.5%) performed GES while adhering to three critical measures validated study duration; controlled blood glucose levels; and proper restriction of medications. Conclusions Low compliance with GES protocol guidelines, even among academic medical centers, raises the likely possibility of misdiagnosis and improper management of upper gastrointestinal symptoms. These results highlight a need for increased awareness of protocol guidelines for gastric scintigraphy.Objective We sought to examine the diagnostic utility of existing predictors of any haemorrhagic transformation (HT) and compare them to novel perfusion imaging permeability measures in ischemic stroke patients receiving alteplase only. Methods A pixel-based analysis of pre-treatment CT perfusion (CTP) was undertaken to define the optimum CTP permeability thresholds to predict the likelihood of HT. We then compared previously proposed predictors of HT using regression analyses and receiver operator characteristic curve analysis to produce an Area Under the Cure (AUC), and compared AUCs using Chi Square analysis. Results From 5 centres, 1407 patients were included in this study, 282 had HT. The cohort was split into a derivation (1025, 70% patients) and validation cohort (382 patients or 30%). The E permeability map at a threshold of 30% relative to contralateral had the highest AUC at predicting any HT (derivation AUC 0.85, 95% CI, 0.79-0.91, validation AUC 0.84, 95% CI, 0.77-0.91). The AUC improved when permeability was assessed within the acute perfusion lesion for the E maps at a threshold of 30% (derivation AUC 0.

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