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To evaluate the technique of peripheral vitreous shaving during vitrectomy, we measured the residual peripheral vitreous using intraoperative optical coherence tomography (iOCT).
This retrospective study included 44 eyes that underwent 25-gauge pars plana vitrectomy with iOCT by a single surgeon. In all cases, the surgery was performed via ocular indentation. Cases in group A were treated with vitreous shaving under slit lamp microscope illumination, whereas cases in group B were treated with vitreous shaving under a wide-angle viewing system. Residual peripheral posterior vitreous-cortex detachment (PVD) was quantified by iOCT.
iOCT image analysis enabled the visualisation of the angle formed between the retina and peripheral PVD around the vitreous base in all cases. After the completion of vitreous shaving, the mean length of the peripheral PVD was shorter in group A (961.7±214.7 µm) compared with group B (1925.3.7 ± 626.1 µm; p<0.01).
iOCT enabled the quantification of the residual peripheral vitreous after vitreous shaving. The quantification of the residual peripheral vitreous after different shaving procedures will be important for advocating appropriate vitreous shaving in future.
iOCT enabled the quantification of the residual peripheral vitreous after vitreous shaving. The quantification of the residual peripheral vitreous after different shaving procedures will be important for advocating appropriate vitreous shaving in future.COVID-19 caused by the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) is associated with significant cardiovascular dysfunction in patients with, and without, pre-existing cardiovascular disease [1]. There are now well-documented cardiac complications of COVID-19 infection which include myocarditis, heart failure, and acute coronary syndrome [2]. There is growing evidence showing that arrhythmias are also one of the major complications of COVID-19. We report a patient with no known cardiac conduction disease who presented with syncope, positive SARS-CoV-2 PCR, who was persistently bradycardic and subsequently developed sinus node dysfunction (SND). To date, there are a limited number of reports of sinus node dysfunction (SND) associated with COVID-19. We describe the clinical characteristics, potential pathophysiologic mechanisms and management of COVID-19 patients who experienced de novo SND.Various electrocardiographic (EKG) manifestations have been reported in patients with coronavirus disease 2019 (COVID-19). There is growing evidence showing that new onset QT-prolongation is a common EKG finding in COVID-19 patients. In this report, we present a case of a 71-year-old man who was found to have a new onset, irreversible, prolonged QT-interval requiring permanent biventricular pacemaker despite testing negative twice for RT-PCR COVID-19 and correction of all known reversible causes. To date, there are a limited number of reports of irreversible QT-prolongation associated with COVID-19. This case report emphasizes the importance of a physician's clinical judgment in the setting of negative RT-PCR COVID-19 testing. A robust systemic inflammatory state seen in active COVID-19 infection is possibly the key mechanism precipitating the new EKG findings.Inferior ST-segment myocardial infarction (STEMI) is often due to acute occlusion of the right coronary artery (RCA) or left circumflex artery (LCx). Anatomically, distal occlusion of a dominant left anterior descending artery (LAD) wrapping around the apex supplying posterior descending artery (PDA) can also lead to inferior wall MI. The occurrence of inferior MI with LAD occlusion is underappreciated. We are presenting a case of proximal LAD occlusion leading to inferior wall MI in the presence of non-occlusive right coronary artery (RCA). Physicians should keep in mind the possibility of inferior myocardial infarction with LAD occlusion and interventional cardiologists should perform a complete angiogram to identify the faulty lesion in inferior STEMI before deciding on a RCA or LCx as the culprit artery. Isolated IWMI (inferior wall myocardial infarction) from proximal occlusion of the wrapped around LAD as noted in our patient is a rare occurrence.Prostate cancers are considered "cold" tumors characterized by minimal T cell infiltrates, absence of a type I interferon (IFN) signature, and the presence of immunosuppressive cells. This non-inflamed phenotype is likely responsible for the lack of sensitivity of prostate cancer patients to immune checkpoint blockade (ICB) therapy. Oncolytic virus therapy can potentially overcome this resistance to immunotherapy in prostate cancers by transforming cold tumors into "hot," immune cell-infiltrated tumors. We investigated whether the combination of intratumoral oncolytic reovirus, followed by targeted blockade of Programmed cell death protein 1 (PD-1) checkpoint inhibition and/or the immunomodulatory CD73/Adenosine system can enhance anti-tumor immunity. Treatment of subcutaneous TRAMP-C2 prostate tumors with combined intratumoral reovirus and anti-PD-1 or anti-CD73 antibody significantly enhanced survival of mice compared with reovirus or either antibody therapy alone. Only combination therapy led to rejection of pre-established tumors and protection from tumor re-challenge. This therapeutic effect was dependent on CD4+ T cells and natural killer (NK) cells. selleck NanoString immune profiling of tumors confirmed that reovirus increased tumor immune cell infiltration and revealed an upregulation of the immune-regulatory receptor, B- and T-lymphocyte attenuator (BTLA). This expression of BTLA on innate antigen-presenting cells (APCs) and its ligand, Herpesvirus entry mediator (HVEM), on T cells from reovirus-infected tumors was in keeping with a role for the HVEM-BTLA pathway in promoting the potent anti-tumor memory response observed.Characterization of the intratumoral immune status is important for developing immunotherapies and evaluating their antitumor effectiveness. CD8+ T cells are one of the most important cell types that directly and indirectly contribute to antitumor efficacy by releasing cytolytic molecules and inflammatory cytokines in the tumor microenvironment. Previously, we engineered a tumor-selective oncolytic vaccinia virus that encodes interleukin-7 (IL-7) and IL-12 and demonstrated its usefulness as an agent for in situ vaccination against tumors, with data showing that antitumor efficacy was reliant upon CD8+ T cells recruited by viral treatment. Here, we investigated the phenotypic changes in intratumoral CD8+ T cells caused by this oncolytic virus and found increased expression of inducible co-stimulator (ICOS) in PD-1-CD8+ T cells. Unlike previously reported ICOS+CD8+ T cells, a subset of ICOS+PD-1-CD8+ T cells showed effector function characterized by granzyme B expression. ICOS expression was induced by the backbone virus, which did not encode any immune transgenes and was independent of upregulation of the type I interferon pathway.
My Website: https://www.selleckchem.com/products/abraxane-nab-paclitaxel.html
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