397 results match your criteria: "The City College of the City University of New York.[Affiliation]"

Background: Understanding the neural basis of behavior requires insight into how different brain systems coordinate with each other. Existing connectomes for various species have highlighted brain systems essential to various aspects of behavior, yet their application to complex learned behaviors remains limited. Research on vocal learning in songbirds has extensively focused on the vocal control network, though recent work implicates a variety of circuits in contributing to important aspects of vocal behavior.

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Purpose: Cancer and cancer treatment have been associated with cognitive changes in survivorship, with forgetfulness and distractibility reported years post-treatment. Deficits in attention control may explain these difficulties. We assessed breast cancer survivors using a primary measure of attention control, the saccade/antisaccade task, to assess the effects of diagnosis and treatment.

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A prevailing belief among researchers is that burnout is a work-specific syndrome induced by intractable job stress. The validity of this belief, however, remains unclear. This cross-sectional study compared burnout with two general conditions, nonspecific psychological distress (NSPD) and exhaustion, in terms of (a) causal attributions to work and (b) associations with 11 job variables (e.

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Article Synopsis
  • This study evaluated an automated system for segmenting breast cancers in MRI scans and compared its effectiveness to that of radiologists across multiple clinical sites.
  • A 3D U-Net model was trained on a substantial dataset and validated against test data from different sites, showing similar performance between the AI and radiologists.
  • The findings indicate that the AI can match radiologists' segmentation accuracy and the code and model weights are shared publicly to encourage reproducibility in radiology AI research.
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For decades, the Maslach Burnout Inventory (MBI) has been regarded as the "gold standard" for the assessment of burnout. The present paper demonstrates that the MBI fails to measure the construct it is purported to measure. On a deeper level, the problems affecting the MBI question the very idea of burnout.

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Angiogenesis and Microvascular Permeability.

Cold Spring Harb Perspect Med

January 2025

Department of Biomedical Engineering, The City College of the City University of New York, New York, New York 10031, USA

Angiogenesis, the formation of new blood microvessels, is a necessary physiological process for tissue generation and repair. Sufficient blood supply to the tissue is dependent on microvascular density, while the material exchange between the circulating blood and the surrounding tissue is controlled by microvascular permeability. We thus begin this article by reviewing the key signaling factors, particularly vascular endothelial growth factor (VEGF), which regulates both angiogenesis and microvascular permeability.

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Background: Hypertension is a global issue that is projected to worsen with increasingly obese populations. The central nervous system including the parts of the cortex plays a key role in hemodynamic stability and homeostatic control of blood pressure (BP), making them critical components in understanding and investigating the neural control of BP. This study investigated the effects of anodal transcranial direct current stimulation (tDCS) associated with aerobic physical exercise on BP and heart rate variability in hypertensive patients.

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Anodal tDCS over the motor cortex improves pain but not physical function in chronic chikungunya arthritis: Randomized controlled trial.

Ann Phys Rehabil Med

May 2024

Graduate Program in Health Sciences, Federal University of Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal 59078-970, Brazil; Graduate Program in Physical Therapy, Federal University of Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal 59078-970, Brazil. Electronic address:

Background: Chikungunya virus (CHIKV) is a globally prevalent pathogen, with outbreaks occurring in tropical regions. Chronic pain is the main symptom reported and is associated with decreased mobility and disability. Transcranial direct current stimulation (tDCS) is emerging as a new therapeutic tool for chronic arthralgia.

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The mechanical properties of CuTi alloys have been characterized extensively through experimental studies. However, a detailed understanding of why the strength of Cu increases after a small fraction of Ti atoms are added to the alloy is still missing. In this work, we address this question using density functional theory (DFT) and molecular dynamics (MD) simulations with the modified embedded atom method (MEAM) interatomic potentials.

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This study examined the psychometric and structural properties of the Polish and Ukrainian versions of the Occupational Depression Inventory (ODI). We relied on two samples of Polish employees (N = 526, 47% female; N = 164, 64% female) and one sample of Ukrainian employees (N = 372, 73% female). In all samples, the ODI exhibited essential unidimensionality and high total-score reliability (e.

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The disruption of endothelial heparan sulfate (HS) is an early event in tumor cell metastasis across vascular barriers, and the reinforcement of endothelial HS reduces tumor cell adhesion to endothelium. Our recent study showed that while vascular endothelial growth factor (VEGF) greatly reduces HS at an in vitro blood-brain barrier (BBB) formed by human cerebral microvascular endothelial cells (hCMECs), it significantly enhances HS on a breast cancer cell, MDA-MB-231 (MB231). Here, we tested that this differential effect of VEGF on the HS favors MB231 adhesion and transmigration.

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Targeting FoxO1 in traditional Chinese medicine for the treatment of diabetes.

Cell Mol Biol (Noisy-le-grand)

November 2023

Institute of Biomedical Engineering, West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, Sichuan, China.

Traditional Chinese medicine (TCM) encompasses treatment strategies for diabetes, which is referred to as "Consumptive Thirsty" syndrome. Recently, there has been discovery regarding the mapping between TCM and signaling molecules, which has revealed a remarkable consistency between TCM and modern medicine from a molecular perspective. In this manuscript, we have summarized the etiology and treatment strategies for diabetes in TCM and have examined these strategies in the context of molecular mechanisms.

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Femtosecond optical Kerr effect in normal and grades of cancerous breast tissues as a new optical biopsy method.

J Biophotonics

February 2024

Department of Physics and Electrical Engineering, Institute for Ultrafast Spectroscopy and Lasers, The City College of the City University of New York, New York, New York, USA.

This study reports on the first use of the optical Kerr effect (OKE) in breast cancer tissue. This proposed optical biopsy method utilizes a Femtosecond Optical Kerr Gate to detect changes in dielectric relaxation and conductivity created by a cancerous infection. Here, the temporal behavior of the OKE is tracked in normal and cancerous samples of human and mouse breast.

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To boost efficient energy transitions, alternatives to expensive and unsustainable noble metal-based electrocatalysts for the oxygen reduction reaction (ORR) are needed. Having this in mind, carbon black - Black Pearls 2000 (BP) was enriched in active nitrogen-containing centers, including single-atom Fe-N sites surrounded by Fe nanoclusters, through a synthesis methodology employing only broadly available precursors. The methodical approach taken to optimize the synthesis conditions highlighted the importance of (1) a proper choice of the Fe precursor; (2) melamine as an N source to limit the formation of magnetite crystals and modulate the charge density nearby the active sites, and glucose to chelate/isolate Fe atoms and thus allow the Fe-N coordination to be established, with a limiting formation of Fe clusters; and (3) a careful dosing of the Fe load.

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In this work, we present a dataset that combines functional magnetic imaging (fMRI) and electroencephalography (EEG) to use as a resource for understanding human brain function in these two imaging modalities. The dataset can also be used for optimizing preprocessing methods for simultaneously collected imaging data. The dataset includes simultaneously collected recordings from 22 individuals (ages: 23-51) across various visual and naturalistic stimuli.

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Femtosecond Optical Kerr Gate in tissues.

J Biophotonics

December 2023

Institute for Ultrafast Spectroscopy and Lasers, Department of Physics, The City College of the City University of New York, New York, New York, USA.

The Optical Kerr Effect is investigated for the first time in biological tissues. This nonlinear effect was explored in both human brain and avian breast tissues using a time-resolved femtosecond pump-probe Optical Kerr Gate that looks for phase changes that arise in the probe from the pump induced Kerr refractive index change. The tissue samples produced a unique ultrafast (700-800 fs) doubled peaked temporal signal, which is indicative of interplay between the different ultrafast mechanisms (electronic plasma and molecular) that make up the Kerr index.

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The reduction of saccadic inhibition by distractor repetition.

J Neurophysiol

September 2023

Department of Biology, The City College of The City University of New York, New York, New York, United States.

When visual distractors are presented far from the goal of an impending voluntary saccadic eye movement, saccade execution will occur less frequently about 90 ms after distractor appearance, a phenomenon known as saccadic inhibition. However, it is also known that neural responses in visual and visuomotor areas of the brain will be attenuated if a visual stimulus appears several times in the same location in rapid succession. In particular, such visual adaptation can affect neurons in the mammalian superior colliculus (SC).

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Blood viscosity is the defining health indicator for hyperviscosity syndrome patients. This paper introduces an alternative approach for the real-time monitoring of blood viscosity by employing a surface-horizontal surface acoustic wave (SH-SAW) device at room temperature. A novel bi-layer waveguide is constructed on top of the SAW device.

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A 3D-printed orthopedic implant with dual-effect synergy based on MoS and hydroxyapatite nanoparticles for tumor therapy and bone regeneration.

Colloids Surf B Biointerfaces

August 2023

State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Department of Orthodontics and Paediatric Dentistry, West China Hospital of Stomatology, School of Chemical Engineering, Sichuan University, Chengdu 610041, China. Electronic address:

Treatments for malignant bone tumors are urgently needed to be developed due to the dilemma of precise resection of tumor tissue and subsequent bone defects. Although polyether-ether-ketone (PEEK) has widely attracted attention in the orthopedic field, its bioinertness and poor osteogenic properties significantly restrict its applications in bone tumor treatment. To tackle the daunting issue, we use a hydrothermal technique to fabricate novel PEEK scaffolds modified with molybdenum disulfide (MoS) nanosheets and hydroxyapatite (HA) nanoparticles.

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The Optical Kerr Effect was demonstrated for the first time as a new optical biopsy method to detect normal and grades of cancer of human breast tissues. The technique works by temporally tracking the various electronic and molecular processes that give rise to the nonlinear index of refraction (n). The rate at which these processes populate and dissipate varies depending on the internal properties of the sample.

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Novel Evoked Synaptic Activity Potentials (ESAPs) Elicited by Spinal Cord Stimulation.

eNeuro

May 2023

Neural Engineering Laboratory, Department of Biomedical Engineering, The City College of the City University of New York, City College Center for Discovery and Innovation, New York, NY 10031.

Spinal cord stimulation (SCS) evokes fast epidural evoked compound action potential (ECAP) that represent activity of dorsal column axons, but not necessarily a spinal circuit response. Using a multimodal approach, we identified and characterized a delayed and slower potential evoked by SCS that reflects synaptic activity within the spinal cord. Anesthetized female Sprague Dawley rats were implanted with an epidural SCS lead, epidural motor cortex stimulation electrodes, an epidural spinal cord recording lead, an intraspinal penetrating recording electrode array, and intramuscular electromyography (EMG) electrodes in the hindlimb and trunk.

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The cutaneous wound in diabetic patients frequently encounters intractable pathogenic infections due to the hyperglycemia micromilieu which is conducive to bacterial growth and multiplication. Despite the extensive clinical use of antibiotics to treat bacterial infections, the emergence of drug-resistant and super pathogens as well as the potential side effects of antibiotics have elicited alarming challenges to public health. To address this daunting concern, we devise and develop a photo-activated cascade bio-heterojunctions (C-bio-HJs) for rapid sterilization and diabetic cutaneous regeneration.

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Herein, we report the synthesis and self-assembly of a new class of amphiphilic azo dyes derived from a plant-based phenol, cardanol. Analysis of the self-assembly of these new azo derivatives was intriguing, and they exhibit some unique nanostructures, such as bicelles and microgel-like structures, and smectic-type thermotropic mesophases.

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