Myxofibrosarcoma of the thyroid gland

AbstractIntroductionMyxofibrosarcoma of the thyroid is exceptional: a Medline search found a single case report. We report a new case which raised diagnostic and therapeutic problems.ObservationWe report the case of a 74-year-old woman who presented with swelling of the left thyroid lobe and ipsilateral cervical lymphadenopathy. Total thyroidectomy with cervical lymph-node dissection was performed. Histological analysis diagnosed myxofibrosarcoma. Evolution was marked by rapid local recurrence, and chemotherapy based on doxorubicin and ifosfamide was introduced.Discussion/conclusionHead and neck myxofibrosarcoma is rare. MRI is essential and should always precede treatment. Diagnosis is histological. There is elevated risk of local recurrence after resection, accompanied by worsening tumor grade, whence the need for accurate diagnosis, appropriate treatment and regular MRI follow-up

Synthesis of Chiral Ionic Liquids from Natural Amino Acids

For the first time, chiral imidazolium ionic liquids containing one chiral carbon (10a−c) were synthesized from the natural amino acids by a simple and straightforward procedure. The characteristics of the chiral ILs are very similar to the popular ionic liquids

Synthesis of Chain End Functionalized Fluoropolymers by Functional Borane Initiators and Application in the Exfoliated Fluoropolymer/Clay Nanocomposites

Synthesis of Chain End Functionalized Fluoropolymers by Functional Borane Initiators and Application in the Exfoliated Fluoropolymer/Clay Nanocomposite

Data_Sheet_1_The outcome and the risk factors of mucormycosis among patients with hematological diseases: a systematic and meta-analysis.docx

ObjectivesMucorale has come into a significant pathogen over recent decades. Nonetheless, mucormycosis-related mortality rates among patients with hematological disorders remain unascertained. Thus, we conducted a meta-analysis to determine mortality rates of mucormycosis in patients with hematology-related conditions.MethodsWe scoured PubMed, Embase, and Web of Science for original papers exploring the intersection of Mucormycosis and Hematological Diseases (from 2000 to 2022). We scrutinized the overall mortality across three distinct periods, as well as differentiating between high-income and middle-income nations. We further evaluated the pooled mortality and the risk differential (RD) across several subgroups.ResultsThe overall mortality rate for hematology patients with mucormycosis was 61%, within a 95% confidence interval (CI) of 0.54–0.68. A significant observation was that mortality rates were somewhat lower in high-income countries compared to middle-income countries (0.60 versus 0.64, p = 0.45). Importantly, we discovered that a combination of surgical and medical treatment significantly improved survival rates compared to medical treatment alone [mortality 0.49 versus 0.67, RD -0.19 (95%CI -0.38-0.00, I2 63.7%)]. As might be expected, disseminated mucormycosis posed a significantly higher risk of death compared to isolated mucormycosis [0.60 versus 0.57, RD death 0.16 (95%CI 0.03–0.28)]. Additionally, our analysis showed no discernible differences in survival rates between genders, between patients with and without breakthrough infection, between those who received mucor-active or mucor-inactive drugs prior to mucor infection, or between those on a multi-drug regimen and those on a single drug treatment.ConclusionDespite the high mortality rates associated with mucormycosis in patients with hematological disorders, those receiving both medical and surgical interventions, as well as those with isolated infection sites, exhibited improved survival outcomes. Conversely, factors such as gender, the presence of breakthrough infection, the use of mucor-active drugs before mucor infection, and multi-drug administration did not significantly influence patient outcomes.</p

High Dielectric VDF/TrFE/CTFE Terpolymers Prepared by Hydrogenation of VDF/CTFE Copolymers: Synthesis and Characterization

High Dielectric VDF/TrFE/CTFE Terpolymers Prepared by Hydrogenation of VDF/CTFE Copolymers:  Synthesis and Characterizatio

Changes in the latency and conduction velocity of the action potential in the vagal trunk of dogs in the TG group before and after surgery.

<p>* The difference before and after surgery was statistically significant (<i>P</i><0.05).</p

Anthracenedicarboximides as Air-Stable N-Channel Semiconductors for Thin-Film Transistors with Remarkable Current On−Off Ratios

A new n-type semiconductor family for organic field-effect transistors (FETs), based on core-unsubstituted and core-cyanated anthracenedicarboximides, is reported. By tuning electron affinity, these materials exhibit good electron-transport properties and stability in ambient as well as very high Ion/Ioff ratios. Unoptimized N,N‘-di-n-octyl-9,10-dicyano-2,3:6,7-anthracenedicarboximide (ADI8-CN2)−based FETs exhibit good electron mobilities (μe = 0.02 cm2/(V s)) and very high Ion/Ioff > 107 in ambient conditions

Mie Sensing with Neural Networks: Recognition of Nano-Object Parameters, the Invisibility Point, and Restricted Models

In this work, we use artificial neural networks (ANNs) to recognize the material composition, sizes of nanoparticles and their concentrations in different media with high accuracy, solely from the absorbance spectrum of a macroscopic sample. We construct ANNs operating in the following two schemes. The first scheme is designed to recognize the dimensions and refractive indices of dielectric scatterers in mixed ensembles. The second ANN model simultaneously recognizes the dimensions of gold nanospheres in a mixture and the refractive index of a matrix. A challenge in the first scheme arises at and near the invisibility point, i.e., when the refractive index of nanoparticles is close to that of the medium. Of course, particle recognition in this regime faces fundamental physical limitations. However, such recognition near the invisibility point is possible, and our study reveals its unique properties. Interestingly, the recognition process for the refractive index in the vicinity of the invisibility point shows very small errors. In contrast, the errors for the recognition of the radius grow strongly near this point. Another regime with limited recognition occurs when the extinction spectra are not unique and can correspond to different realizations of nanoparticle mixtures. Regarding multi-particle or polydisperse solutions, the ML-based models should in such cases be rationally restricted to maintain the feasibility of the recognition process. Overall, the recognition schemes proposed and investigated by us can find their applications in the field of sensing

Mast cells disrupt the duodenal mucosal integrity: Implications for the mechanisms of barrier dysfunction in functional dyspepsia

Functional dyspepsia (FD) is a common functional gastrointestinal (GI) disorder, but its pathophysiology is poorly understood. Mast cells (MCs) may play a critical role in the development of FD. Therefore, the aim of this study was to investigate the effect of MCs on barrier function, tight junction (TJ) proteins and related signaling pathways. The expression of the TJ proteins claudin-8, ZO-1 and occludin in biopsy tissues from seven FD patients and five controls was assessed. Based on the in vivo results, we further investigated the effect of (1) MC degranulation in a coculture model of Caco-2/RBL-2H3 cells and tryptase in Caco-2 monolayers, (2) MC degranulation in the presence or absence of a PAR-2 antagonist and (3) MC degranulation in the presence or absence of an ERK1/2 signaling pathway inhibitor. The epithelial integrity of Caco-2 cell monolayers was assessed by measuring the transepithelial electrical resistance (TEER). The expression of TJ proteins was evaluated by western blotting, QT-PCR and immunostaining. Epithelial claudin-8, ZO-1 and occludin protein expression were significantly reduced in tissues from FD patients compared with controls. MC degranulation and tryptase decreased the TEER and reduced the expression of TJ proteins in Caco-2 cell monolayers. A PAR-2 antagonist and an ERK1/2 signaling pathway inhibitor significantly reduced the effect of MC degranulation on the TEER and TJ protein expression in Caco-2 cell monolayers. MCs disrupt duodenal barrier function by modulating the levels of TJ proteins, and the PAR-2 and ERK1/2 signaling pathways may mediate the pathogenesis of FD.</p

Role of Ni in PtNi Alloy for Modulating the Proton–Electron Transfer of Electrocatalytic Hydrogenation Revealed by the <i>In Situ</i> Raman–Rotating Disk Electrode Method

Electrocatalytic hydrogenation of nitrobenzene to aniline is of industrial and environmental importance, but it remains a great challenge due to the high-toxicity intermediates and low hydrogenation kinetics. Here, we design a PtNi alloy via Ni-doping, which favors the low-toxicity and low free-energy pathway. Further, we perform surface-enhanced Raman spectroscopy coupled to a rotating disk electrode to obtain direct spectroscopic evidence of intermediates during the electron transfer. Combined with the kinetic isotope effect and pH dependence results, it has been shown that Ni-doping alters the structural properties to weaken the adsorption of nitrobenzene, resulting in preferential proton transfer using water as the hydrogen source. This process is revealed to be proton transfer followed by the electron transfer pathway that improves reaction kinetics and reduces undesirable intermediates. This work enables in situ detection and reveals the role of transition metal doping in modulating the proton–electron transfer in typical electrocatalytic hydrogenation reactions