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The connector channel of bacteriophage phi29 DNA packaging motor has been inserted into the lipid bilayer membrane and has shown potential for the sensing of DNA, RNA, chemicals, peptides, and antibodies. Properties such as high solubility and large channel size have made phi29 channel an advantageous system for those applications; however, previously studied lipid membranes have short lifetimes, and they are frangible and unstable under voltages higher than 200 mV. Thus, the application of this lipid membrane platform for clinical applications is challenging. Here we report the insertion of the connector into the stable polymer membrane in MinION flow cell that contains 2048 wells for high-throughput sensing by the liposome-polymer fusion process. The successful insertion of phi29 connector was confirmed by a unique gating phenomenon. Peptide translocation through the inserted phi29 connector was also observed, revealing the potential of applying phi29 connector for high-throughput peptide sensing. BACKGROUND The use of directional atherectomy (DA) with or without drug-coated balloon (DCB) may be considered for the management of common femoral artery (CFA) occlusive disease because of its minimally invasive nature with early mobilization, reduced incision complications, and infection rates. However, it has recognized complications, which may be related to the learning curve. We present our initial experience using DA and suggest changes that may, based on our practice, improve outcomes. METHODS Retrospective analysis with a prospective data collection from 2 centers to analyze outcomes in all consecutive patients treated during 1 year (n = 25). Patients who underwent CFA DA with/without DCB for CFA >70% stenosis. Primary end points include technical success, primary patency of the CFA, morbidity, and mortality. Secondary end points include change in Rutherford-Becker class, length of stay, and target lesion revascularization rate. RESULTS Between July 2017 and December 2018, 25 patients underwent CFA DA. Two had an occluded CFA, and 23 had >70% CFA stenosis as determined by ultrasound scan (USS) and/or computed tomography angiogram (CTA) preoperatively. There were no deaths within 30 days. Procedure-related complications included 2 cases of CFA pseudoaneurysm (one of them repaired by open surgery) and 1 CFA perforation (repaired with covered stent). No distal embolization or limb loss occurred. Mean length of stay was 1.9 days. Primary and secondary patency at 3 and 6 months was 100%. At 12 months, it was 96%. GSK3368715 research buy CONCLUSIONS Early results suggest that CFA DA with/without DCB is safe and effective. Previous CTA, focused USS, and/or intravascular USS may be useful to minimize the risk of pseudoaneurysm or perforation by excessive thinning of the media. Experience is required to prevent localized dilatation over time. Crown All rights reserved.We discuss the rare case of a 72 year old female with a history of a non-healing lower extremity ulcer that was biopsied revealing malignant transformation to basal cell carcinoma (BCC). Although basal cell carcinoma is the most common malignancy worldwide, malignant transformation of non-healing wounds are more often associated with squamous cell carcinoma. Current literature estimates the rate of BCC arising from venous stasis ulcer to occur between 1.5-15%. When diagnosed early, BCC can have cure rates of up to 95%. However, metastatic BCC has a median survival of roughly 8 months. We believe it is important to raise awareness of this rare, but often curable clinical diagnosis in order to improve long term outcomes. We report a case of a patient who underwent a 2-stage operation that included a right obturator bypass with left iliac remote endarterectomy followed by removal of an infected, previously failed aorto-right-femoral and right axillo-bifemoral bypass reconstructions. Published by Elsevier Inc.BACKGROUND Arterial reconstruction (AR) for limb ischemia may improve ambulatory function (AF) and health-related quality of life (HR-QoL). However, the efficacy of AR in terms of HR-QoL varies in studies, probably because of cohort differences in disease severity, hemodynamic outcomes, and observation duration. We assessed HR-QoL for patients with various severities of ischemia in a 3-year observational study. METHODS We conducted a single-center 3-year observational study using Short Form 36 in patients with chronic limb ischemia. Between 2001 and 2009, 515 consecutive patients had AR, and 330 who underwent elective AR consented to the study. Of the 330 patients (claudicants 49%, critical limb ischemia [CLI] 51%), 307 underwent bypass and 23 endovascular therapy. Postal questionnaires were sent after AR, and 8 domains, the physical and mental component summary (PCS and MCS) scores, and the patient-reported AF were compared, and negative predictors were identified. RESULTS Overall, the MCS was minimally affected, but AF and the PCS were impaired. After AR, these measures were significantly improved, and maximum recovery was attained at 6 months. In subgroup analysis, significant predictors of a negative impact on postoperative PCS included age ≥80, CLI, physical aftereffects of stroke (PAS), and previous major amputation (PMA). Of these, PMA was associated with the lowest PCS score, followed by PAS; for these patients, AR contributed minimally to HR-QoL recovery. PCS scores of claudicants attained a maximum value at 6 months; however, PCS scores of CLI patients were significantly lower than intermittent claudication patients (P less then 0.0001), and patients with major tissue loss required 2 years to attain maximum PCS recovery. CONCLUSIONS This 3-year observational study verified the efficacy of AR in improving AF and HR-QoL. Age ≥80, CLI, PAS, and PMA were definitive predictors, and for patients with the latter 2, AR contributed minimally to improving HR-QoL. Abdominal aortic injury secondary to blunt abdominal aortic trauma (BAAI) is a rare in children but frequently occurs in association with other injuries, including bowel injury and vertebral fracture. We present a case of a 14-year-old boy who sustained a partial transection of the infrarenal aorta with a lumbar chance fracture and small bowel injury following a motor vehicle accident. Repair was performed with bowel resection followed by Dacron graft interposition. We reviewed the literature on BAAI in children with a focus on the method of repair of these injuries.
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