The moisture-activated NH3 sensing mechanism was thoroughly investigated by complex impedance spectroscopy CIS, quartz crystal microbalance QCM measurements, Fourier transform infrared FT-IR spectroscopy and X-ray photoelectron spectroscopy XPS To explore the application prospects of cross-linked hydrogel sensors for detecting NH3 in exhaled breath, a simulated exhaled breath test was also performedChemically modulating monoamine neurotransmitter serotonin undergoes a physiological reaction of enzyme intermediated peroxidation to reconstruct dimeric self-assembled complex A standard bivalent ligand approach dimeric serotonin increases structural and functional scaffolding with recognition-binding sites that are fundamentally more friendly than monovalent binding sites Dimerization reaction accelerates the catalytic activity of one-electron oxidation at the C4 position of serotonin to generate dual phenolic radicals in the presence of horseradish HRP and hydrogen peroxide H2O2 Herein, we suggest the dimeric serotonin-based colorimetric assay, which presents a new rapid, sensitive, selective, and quantitative visualization The dimeric serotonin possesses the capability to recognize intermolecular interaction units that cause aggregation scaffold of gold nanoparticles GNPs, providing inexpensive and straightforward analytical needs As a proof of visual and spectral analysis, peroxidative dimeric serotonin demonstrated sensitive and robust results  https//wwwselleckchemcom/products/alkbh5-inhibitor-2html  The calorimetric method enables highly sensitive detection of serotonin in phosphate buffer, and in human serum samples at nanomolar levels with a LOD of 26 nM and 281 nM, respectively, and the sensor possesses a dynamic range of 100-300 nM in buffer condition Also, as proof of concept, visible color imaging of immunosensors which is appropriate for fast visible testing at detection limits as low as 290 nM concentrationOchratoxin A OTA as the most dangerous mycotoxin is produced by Aspergillus Ochraceus and Penicillium verrucosum OTA can be found in beverages and foodstuffs that induces the teratogenic, nephrotoxic, carcinogenic, and immunosuppressive effects on humans Hence, developing highly sensitive methods for its detection is of great importance Herein, a novel aptasensor was designed for the label-free monitoring of the ultra-low OTA levels by a combination of the superiority of aptamers and long-range orientational order of liquid crystals LCs The aptasensing strategy was based on the conformational switch of the immobilized π-shaped DNA structure on the glass substrate in presence of the target A shift in the orientation of LCs from random to homeotropic state led to the apparent alteration of the optical appearance of the aptasensor platform from bright to dark The LC-based aptasensor especially detects OTA at the ultra-trace level as low as 063 aM with comparable selectivity The aptasensor could detect OTA successfully in the grape juice, coffee, and human serum samples The LC-based aptasensor paves a way for developing portable and real-time sensing probes with high performance for food safety control and clinical applicationWe herein describe a novel method to identify thyroid hormone TH/thyroid hormone receptor TR interaction, termed aptamer-assisted protein-induced fluorescence enhancement AptPIFE In this method, a detection probe consisting of an RNA strand incorporating TH-specific aptamer and a Cy3-labeled DNA strand holds TH in close proximity to Cy3 The corresponding TR then binds to the TH near Cy3, consequently stimulating Cy3 to emit a significantly enhanced fluorescence through PIFE phenomenon Based on this simple yet efficient design principle, we successfully identified the interaction of TH with TR within 10 min, down to 037 pM with excellent specificity The practical and robust applicability of this method was also successfully validated by properly screening TR antagonists and reliably quantifying TH present in real clinical serum samples from patients with hyperthyroidism and healthy volunteersPost-infectious/immune mediated effects of COVID-19 infection include descriptions of Guillain-Barré syndrome GBS in patients usually with respiratory failure and after 1-2 weeks from the onset of viral illness Asymptomatic cases for COVID-19 infection were rarely described Herein, we studied a 62-year-old patient with progressive weakness of lower extremities, rapidly evolving to a severe, flaccid tetraplegia and dysphagia Neurological symptoms weren't preceded by fever or pulmonary symptoms Because of laboratory test abnormalities thrombocytopenia, lymphocytopenia, high inflammation indexes, the patient underwent to nasopharyngeal swab, resulted positive for SARS-CoV-2 on RT-PCR assay; cerebrospinal fluid CSF was negative for SARS-CoV-2 The clinical severe symmetric distal upper and lower limbs weakness, grade 0/5; decreased proprioceptive sensitivity and hypoesthesia involving the four limbs; loss of deep tendon reflexes, electrophysiological prevailing axonal polyradiculoneuritis and CSF features albumino-cytological dissociation disclosed the GBS diagnosis level 1 of diagnostic certainty according to the Brighton criteria The patient received plasma exchange and immunoglobulin, and, at 4 weeks after treatment and physical therapy, the patient had moderate improvement weakness at lower and upper extremities was grade 2/5 and 3/5, respectively Neurologists and clinicians should be aware of the possible link between neurological symptoms and COVID-19 infection, not only after viral prodrome and pulmonary symptoms, but also without COVID-19 symptoms
  The semisitting position SSP and lateral position LP in vestibular schwannoma VS surgery each have advantages and disadvantages, and which position is superior overall is debatable Our objective was to determine the optimal position for surgical treatment of VSs with a diameter ≥3cm
 
  We retrospectively evaluated consecutive patients with a large VS treated between January 2010 and July 2020 Patients were grouped by surgical position and analyzed
 
  We enrolled 259 patients LP group, n=156; SSP group, n=103 The resection extent was not significantly different between the SSP gross-total resection [GTR], n=89 [881], near-total resection [NTR], n=10 [99], subtotal resection [STR], n=2 [20] and LP GTR, n=125 [801]; NTR, n=24 [154]; STR, n=7 [45] groups The rate of GTR with facial nerve FN functional preservation was higher in the SSP group than in the LP group P=0014 at eight days after the operation However, during follow-up SSP group median, 315 months; LP group median, 19