The optimal surveillance and management strategies for breast cancer patients receiving anthracycline therapy are limited by our incomplete understanding of the role of biomarkers heralding the onset of cardiotoxicity. The purpose of this study was to determine whether there is a temporal correlation between cardiac biomarkers and subclinical left ventricular dysfunction in breast cancer patients receiving anthracycline chemotherapy. Thirty-one females between 46 and 55 years old with breast cancer treated with anthracycline chemotherapy were prospectively enrolled.
View Article and Find Full Text PDFThe galvanostatic intermittent titration technique (GITT) is considered the go-to method for determining the Li diffusion coefficients in insertion electrode materials. However, GITT-based methods are either time-consuming, prone to analysis pitfalls or require sophisticated interpretation models. Here, we propose the intermittent current interruption (ICI) method as a reliable, accurate and faster alternative to GITT-based methods.
View Article and Find Full Text PDFIn the field of lithium-based batteries, there is often a substantial divide between academic research and industrial market needs. This is in part driven by a lack of peer-reviewed publications from industry. Here we present a non-academic view on applied research in lithium-based batteries to sharpen the focus and help bridge the gap between academic and industrial research.
View Article and Find Full Text PDFTwo water-soluble binders of carboxymethyl cellulose (CMC) and sodium alginate (SA) have been studied in comparison with N-methylpyrrolidone-soluble poly(vinylidene difluoride-co-hexafluoropropylene) (PVdF-HFP) to understand their effect on the electrochemical performance of a high-voltage lithium nickel manganese oxide (LNMO) cathode. The electrochemical performance has been investigated in full cells using a Li Ti O (LTO) anode. At room temperature, LNMO cathodes prepared with aqueous binders provided a similar electrochemical performance as those prepared with PVdF-HFP.
View Article and Find Full Text PDFTiO -coating of LiNi Mn O (LNMO) by atomic layer deposition (ALD) has been studied as a strategy to stabilize the cathode/electrolyte interface and mitigate transition metal (TM) ion dissolution. The TiO coatings were found to be uniform, with thicknesses estimated to 0.2, 0.
View Article and Find Full Text PDFChem Commun (Camb)
January 2022
Three-electrode measurements are valuable to the understanding of the electrochemical processes in a battery system. However, their application in lithium-sulfur chemistry is difficult due to the complexity of the system and thus rarely reported. Here, we present a simple three-electrode cell format with relatively good life time and minimum interference with the cell operation.
View Article and Find Full Text PDFAccumulation of senescent cells may drive age-associated alterations and pathologies. Senolytics are promising therapeutics that can preferentially eliminate senescent cells. Here, we performed a high-throughput automatized screening (HTS) of the commercial LOPAC®Pfizer library on aphidicolin-induced senescent human fibroblasts, to identify novel senolytics.
View Article and Find Full Text PDFThis study demonstrates the application of AlO coatings for the high-voltage cathode material LiNi Mn O (LNMO) by atomic layer deposition. The ultrathin and uniform coatings (0.6-1.
View Article and Find Full Text PDFFunctional binders constitute a strategy to overcome several challenges that lithium-sulfur (Li-S) batteries are facing due to soluble reaction intermediates in the positive electrode. Poly (ethylene oxide) (PEO) and poly (vinylpyrrolidone) (PVP) are in this context a previously well-explored binder mixture. Their ether and amide groups possess affinity to the dissolved sulfur species, which enhances the sulfur utilization and mitigates the parasitic redox shuttle.
View Article and Find Full Text PDFObjective: We sought to evaluate the impact of pulmonary embolism (PE) response teams (PERTs) on all consecutive patients with PE.
Background: Multidisciplinary PERTs have been promoted for the management and treatment of (PE); however, the impact of PERTs on clinical outcomes has not been prospectively evaluated.
Methods: We prospectively studied 220 patients with computed tomography (CT)-confirmed PE between January, 2019 and August, 2019.
Cellular senescence is a physiological state generally defined as a stable arrest of proliferation by preventing the cells from cycling. Unlike terminally differentiated cells, that also do not show proliferative activity, cellular senescence is stress induced and blocks the proliferation of cells with theoretical ability to divide (such as progenitor, stem or cancer cells) due to the activity of specific signaling pathways. The number of senescent cells increases during the ontogenesis of an organism.
View Article and Find Full Text PDFOperando X-ray diffraction (XRD) is a valuable tool for studying secondary battery materials as it allows for the direct correlation of electrochemical behavior with structural changes of crystalline active materials. This is especially true for the lithium-sulfur chemistry, in which energy storage capability depends on the complex growth and dissolution kinetics of lithium sulfide (LiS) and sulfur (S) during discharge and charge, respectively. In this work, we present a novel development of this method through combining operando XRD with simultaneous and continuous resistance measurement using an intermittent current interruption (ICI) method.
View Article and Find Full Text PDFPrimary small bowel adenocarcinoma is rare, with an estimated U.S. annual incidence of 3.
View Article and Find Full Text PDFWe report the case of a 76-year-old male who developed anuric acute kidney injury from infection-related glomerulonephritis (IRGN) secondary to foot osteomyelitis, confirmed via renal biopsy. The patient initially presented with wound dehiscence of the left foot following transmetatarsal amputation and Lisfranc operation in the setting of osteomyelitis. Hospitalization was complicated by worsening acute kidney injury requiring the initiation of hemodialysis.
View Article and Find Full Text PDFBackground: Coronary embolism is a rare and potentially fatal phenomenon that occurs primarily in patients with valvular heart disease and atrial fibrillation. There is a lack of consensus regarding the diagnosis, treatment, and management of coronary embolism, leaving management at the discretion of the treating physician. Through this review, we aim to establish a better understanding of coronary embolism, and to identify treatment options - invasive and non-invasive - that may be used to manage coronary embolism.
View Article and Find Full Text PDFAging (Albany NY)
April 2019
The biosynthesis of ribosomes is a complex process that requires the coordinated action of many factors and a huge energy investment from the cell. Ribosomes are essential for protein production, and thus for cellular survival, growth and proliferation. Ribosome biogenesis is initiated in the nucleolus and includes: the synthesis and processing of ribosomal RNAs, assembly of ribosomal proteins, transport to the cytoplasm and association of ribosomal subunits.
View Article and Find Full Text PDFAn operando electrochemical quartz crystal microbalance with dissipation monitoring (EQCM-D) with simultaneous in situ electrochemical impedance spectroscopy (EIS) has been developed and applied to study the solid electrolyte interphase (SEI) formation on copper current collectors in Li ion batteries. The findings are backed by EIS simulations and complementary analytical techniques, such as online electrochemical mass spectrometry (OEMS) and X-ray photoelectron spectroscopy (XPS). The evolution of mass and the mechanical properties of the SEI are directly correlated to the electrode impedance.
View Article and Find Full Text PDFIn this work, three types of polymers based on ε-caprolactone have been synthesized: poly(ε-caprolactone), polystyrene-poly(ε-caprolactone), and polystyrene-poly(ε-caprolactone--trimethylene carbonate) (SCT), where the polystyrene block was introduced to improve the electrochemical and mechanical performance of the material. Solid polymer electrolytes (SPEs) were produced by blending the polymers with 10-40 wt% lithium bis(trifluoromethane)sulfonimide (LiTFSI). Battery devices were thereafter constructed to evaluate the cycling performance.
View Article and Find Full Text PDFAlthough depressive disorders have been associated with increased risk of worse outcomes with cardiovascular diseases (CVDs), its relation with access to and quality of cardiovascular care is not well studied. Accordingly, we sought to assess the association between depressive disorders and access and quality of care among United States veterans with CVD. The 2013 Centers for Disease Control's Behavioral Risk Factor Surveillance Survey was utilized to identify a cohort of 13,126 veterans with CVD.
View Article and Find Full Text PDFAim: To describe an approach to anterior cruciate ligament (ACL) reconstruction using autologous hamstring by drilling the anteromedial portal in the presence of an intramedullary (IM) femoral nail.
Methods: Once preoperative imagining has characterized the proposed location of the femoral tunnel preparations are made to remove all of the hardware (locking bolts and IM nail). A diagnostic arthroscopy is performed in the usual fashion addressing all intra-articular pathology.
We report here a water-based functional binder framework for the lithium-sulfur battery systems, based on the general combination of a polyether and an amide-containing polymer. These binders are applied to positive electrodes optimised towards high-energy electrochemical performance based only on commercially available materials. Electrodes with up to 4 mAh cm capacity and 97-98 % coulombic efficiency are achievable in electrodes with a 65 % total sulfur content and a poly(ethylene oxide):poly(vinylpyrrolidone) (PEO:PVP) binder system.
View Article and Find Full Text PDFChem Commun (Camb)
December 2015
Efficient, reversible lithium intercalation into graphite in ether-based electrolytes is enabled through a protective electrode binder, polyacrylic acid sodium salt (PAA-Na). In turn, this enables the creation of a stable "lithium-ion-sulfur" cell, using a lithiated graphite negative electrode with a sulfur positive electrode, using the common DME:DOL solvent system suited to the electrochemistry of the lithium-sulfur battery. Graphite-sulfur lithium-ion cells show average coulombic efficiencies of ∼99.
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