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Objectives The aim of this study was to conduct a systematic review and meta-analysis on the efficacy of growth factors (GF) on clinical outcomes after treatment (surgical/non-surgical) of peri-implant diseases (peri-implant mucositis and peri-implantitis). Materials and methods A protocol was developed to answer the following focused question Is there any difference for the use of GF for treatment of peri-implant diseases versus comparative GF treatment or without GF? Electronic database and manual searches were independently conducted to identify randomized controlled trials (RCTs). Publications were selected based on eligibility criteria and then assessed for risk-of-bias using the Cochrane Handbook. The primary outcome was probing depth (PD) and bleeding on probing (BOP) reduction along with changes in vertical defect depth (VDD). Changes in clinical attachment level, gingival recession, and plaque index, among others, were studied as secondary outcomes. Based on primary outcomes, random-effects meta-anal systematic review and based on the meta-analyses, (1) the addition of GF for the treatment peri-implant mucositis might be associated with better outcomes in terms of PD and BOP, and (2) an additional benefit of GF for the treatment peri-implantitis could not be determined on the basis of the selected evidence.Objective Myotonia is caused by involuntary firing of skeletal muscle action potentials and causes debilitating stiffness. Current treatments are insufficiently efficacious and associated with side effects. Myotonia can be triggered by voluntary movement (electrically-induced myotonia) or percussion (mechanically-induced myotonia). Whether distinct molecular mechanisms underlie these triggers is unknown. Our goal was to identify ion channels involved in mechanically-induced myotonia and to evaluate block of the channels involved as a novel approach to therapy. Methods We developed a novel system to enable study of mechanically-induced myotonia using both genetic and pharmacologic mouse models of myotonia congenita. We extended ex vivo studies of excitability to in vivo studies of muscle stiffness. Results As previous work suggests activation of transient receptor potential vanilloid 4 (TRPV4) channels by mechanical stimuli in muscle, we examined the role of this cation channel. Mechanically-induced myotonia was markedly suppressed in TRPV4-null muscles and in muscles treated with TRPV4 small molecule antagonists. The suppression of mechanically-induced myotonia occurred without altering intrinsic muscle excitability such that myotonia triggered by firing of action potentials (electrically-induced myotonia) was unaffected. When injected intraperitoneally, TRPV4 antagonists lessened the severity of myotonia in vivo by approximately 80%. Interpretation These data demonstrate for the first time that there are distinct molecular mechanisms triggering electrically- and mechanically-induced myotonia. Our data indicates that activation of TRPV4 during muscle contraction plays an important role in triggering myotonia in vivo. https://www.selleckchem.com/products/sbc-115076.html Elimination of mechanically-induced myotonia by TRPV4 inhibition offers a new approach to treating myotonia. This article is protected by copyright. All rights reserved.Purpose To evaluate the biliary tree and hepatic parenchymal findings on magnetic resonance imaging (MRI) and magnetic resonance cholangiopancreatography (MRCP) in small-duct primary sclerosing cholangitis (SD-PSC). Methods Thirty-nine patients with biopsy-proven primary sclerosing cholangitis (PSC) without any bile duct abnormality on MRCP (n = 15) or ERCP (n = 24) at the time of diagnosis were identified. Follow-up MRCP was available in 36/39 patients (12/15 Baseline MRCP group and 24 Baseline ERCP group). Two radiologists in consensus assessed the MRI/MRCP findings. The baseline MRI/MRCP of 15 SD-PSC patients was compared with MRI/MRCP of 15 normal healthy potential liver donors (Control group). Comparisons were made between SD-PSC patients and the Control group, and between baseline and follow-up MRI/MRCP findings in the SD-PSC patients. Results In the 15 Baseline MRCP SD-PSC subjects, the biliary tree was normal with a trend of larger bile ducts compared to the Control group. Periductal enhancement (arterial phase 70%, 7/10; delayed phase 90%, 9/10), heterogeneous parenchymal signal on T2-weighted (53%, 8/15) and post contrast-enhanced images (70%, 7/10), and enlarged periportal lymph nodes (73%, 11/15) were frequently present in patients with SD-PSC. Eight (33%) of 24 SD-PSC patients who had normal MRCP at baseline MRCP or initial follow-up MRCP after normal baseline ERCP showed large-duct PSC (LD-PSC) features on follow-up and the 10-year cumulative incidence for progression to LD-PSC rate was 8.5%. Conclusion SD-PSC patients have a normal biliary tree but frequently have peribiliary enhancement, abnormal parenchymal signal intensity, and periportal lymphadenopathy. One-third shows progression to LD-PSC on follow-up.Background The impact of systems problems and human factors on delivering safe, high-quality patient care is well recognized. In the surgical setting, mortality and morbidity reviews (MMRs) are the key forum for reviewing and analysing adverse events in patient care yet there is a paucity of simple tools for undertaking such analyses. The aim of this study was to develop and pilot a new tool for analysing mortality and morbidity cases incorporating human factors and systems analysis. Methods The published literature, professional standards, guidelines and existing audit tools for MMRs were reviewed. The 'People-Processes-Paradigm' tool was developed and pilot testing was undertaken and stakeholder feedback was obtained. Results Models found for undertaking systems-based analysis of adverse surgical events included the 3D model, SEIPS and the Queensland Health human error and patient safety (HEAPS) Incident Management Tool. Guidelines for standards in MMRs are provided by the Royal Australasian College of Surgeons, New South Wales Clinical Excellence Commission and Australia and New Zealand audit of surgical mortality (ANZASM). The People-Processes-Paradigm model incorporates these standards and evidence-based systems analysis tools into a single effective tool. The pilot study evaluating the use of this tool demonstrated it to be practical and easily applicable to regular use by clinicians, with the ability to be tailored to individual health service use. Improvements such as electronic format and clarification of case selection processes were recommended by users. Conclusion The People-Processes-Paradigm tool has been developed for surgeons by surgeons incorporating current professional, legal and regulatory requirements in Australasia, easily transferrable to electronic platforms. This model requires further testing for validation.
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