64 results match your criteria: "University of Mississippi. University[Affiliation]"

Inter-strain variability in responses to a single administration of the cannabidiol-rich cannabis extract in mice.

Food Chem Toxicol

October 2024

Department of Environmental Health Sciences, Fay W. Boozman College of Public Health, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA; Center for Dietary Supplements Research, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA. Electronic address:

Cannabidiol (CBD) has gained widespread popularity; however, its pharmacological and toxicological profiles in the context of human genetic diversity remain largely unexplored. Here, we investigated the variability in metabolism and toxicity of CBD-rich cannabis extract (CRCE) in genetically diverse mouse models: C57BL/6J, B6C3F/J, and NZO/HlLtJ strains. Mice received a single dose of CRCE containing 57.

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SummaryWe describe a case of culture-negative infective endocarditis due to , where the application of metagenomics shotgun sequencing in blood played a pivotal role in elucidating the underlying aetiology, guiding targeted therapy and ultimately resulting in the patient's complete recovery. Beyond its immediate clinical impact, prompt treatment bears significant implications for public health. The utilisation of molecular testing emerges as a valuable strategy to enhance diagnostic accuracy, particularly in cases involving fastidious organisms that are infrequently associated with infective endocarditis.

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  • The study investigates the effectiveness of DNA barcoding for identifying crayfish species, revealing that while local barcoding gaps exist, only a few genera show global barcoding gaps meeting the typical threshold for species discovery.
  • Analysis of mitochondrial COI sequence data from 81 crayfish species indicates that global barcoding gaps are below the previously suggested 10× threshold, leading researchers to propose a new ~5× threshold for better species identification.
  • The findings suggest that the existing taxonomy of most crayfish species may be insufficient, indicating a need for taxonomic revisions even for species with identifiable local barcoding gaps.
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Fluorescence bioimaging with near-infrared II (NIR-II) emissive organic fluorophores has proven to be a viable noninvasive diagnostic technique. However, there is still the need for the development of fluorophores that possess increased stability as well as functionalities that impart stimuli responsiveness. Through strategic design, we can synthesize fluorophores that possess not only NIR-II optical profiles but also pH-sensitivity and the ability to generate heat upon irradiation.

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Latent bloodstain detection remains imperative for crime scene investigators. Widely used luminol offers high sensitivity to human blood, but can produce untrustworthy results from a bleach-cleaned crime scene or in a room not dark enough. Furthermore, dark pigments impede imaging bloodstains covered by dark materials with previously reported bloodstain detection agents.

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Strong molecular photooxidants are important in many disciplines including organic synthesis and renewable energy. In these fields, strongly oxidizing chromophores are employed to drive various transformations from challenging bond formations to energy storage systems. A range of photooxidant strengths are needed to drive these processes.

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  • Higher partial pressure of carbon dioxide (PaCO2) levels are linked to worse outcomes in traumatic brain injury (TBI) patients at high altitudes (2600 meters) compared to normal altitudes.
  • In a study of 81 TBI patients, unfavorable outcomes (defined as a Glasgow Outcome Scale-Extended score < 4) were observed in 30%, while 24% of patients died within 6 months post-injury.
  • Factors significantly associated with poorer outcomes included older age, lower Glasgow Coma Scale scores on admission, higher Abbreviated Injury Score of the Head, and elevated PaCO2 levels.
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  • The COVID-19 pandemic has worsened health outcomes for patients with chronic diseases, particularly those with systemic lupus erythematosus (SLE), prompting a study on the effects of SLE on COVID-19 hospitalizations.
  • The analysis of over a million COVID-19 cases revealed that SLE patients, mostly younger women, had higher rates of comorbidities and faced a greater risk of acute kidney injury and in-hospital mortality compared to non-SLE patients.
  • These findings highlight the increased vulnerability of SLE patients to severe COVID-19 outcomes, underscoring the need for targeted precautions and education for this group.
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Debunking myths in headache diagnosis for the pain practitioner.

Reg Anesth Pain Med

August 2024

Headache and Pain Neurologist, Center for Pain Medicine, Department of Anesthesiology, University of California, San Diego, La Jolla, California, USA

With headache being one of the most common chief complaints, it is essential for pain practitioners to interpret and differentiate a variety of headache characteristics to accurately diagnose and treat specific headache disorders. Certain misconceptions often lead to misdiagnosis. This article presents and discusses six myths about several common headache disorders (migraine, tension-type headache, cluster headache, cervicogenic headache, sinus headache, and occipital neuralgia) often encountered in clinical practice.

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  • - This research focused on developing new anticancer compounds based on theobromine to inhibit VEGFR-2 and tested their effectiveness against cancer cell lines MCF-7 and HepG2.
  • - The compound 15a showed the strongest anti-cancer properties, with low micromolar inhibitory concentrations (IC values of 0.76 μM for HepG2 and 1.08 μM for MCF-7) and significant apoptosis induction in HepG2 cells, increasing apoptosis rates substantially.
  • - Additionally, 15a demonstrated strong binding to VEGFR-2 and inhibited cell migration and wound healing in HepG2 cells, suggesting its potential as a new anticancer treatment based on both biological activity and
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As fluorescence bioimaging has increased in popularity, there have been numerous reports on designing organic fluorophores with desirable properties amenable to perform this task, specifically fluorophores with emission in the near-infrared II (NIR-II) region. One such strategy is to utilize the donor-π-acceptor-π-donor approach (D-π-A-π-D), as this allows for control of the photophysical properties of the resulting fluorophores through modulation of the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) energy levels. Herein, we illustrate the properties of thienothiadiazole (TTD) as an effective acceptor moiety in the design of NIR emissive fluorophores.

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Expanding the scope of novel 1,2,3-triazole derivatives as new antiparasitic drug candidates.

RSC Med Chem

January 2023

Instituto de Química Rosario (IQUIR) UNR, CONICET, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario Suipacha 531 S2002LRK Rosario Argentina +54 341 4370477 +54 341 4370477.

We have previously shown that prenyl and aliphatic triazoles are interesting motifs to prepare new chemical entities for antiparasitic and antituberculosis drug development. In this opportunity a new series of prenyl-1,2,3-triazoles were prepared from isoprenyl azides and different alkynes looking for new antimalarial drug candidates. The compounds were prepared by copper(i) catalyzed dipolar cycloaddition of the isoprenyl azide equilibrium mixture providing exclusively 1,4-disubstituted 1,2,3-triazoles in a regiospecific fashion.

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Primary tumor site determination for gastrointestinal (GI) tract and pancreaticobiliary (PB) tree carcinomas that present as metastasis of unknown primary can be problematic. Annexin A10 (ANXA10), claudin 18 (CLDN18), and trefoil factor 1 (TFF1) have been identified through expression profiling as markers of gastric lineage commitment; sex-determining region Y (SRY)-box transcription factor 2 (SOX2) expression has been reported in several tumor types, including gastric adenocarcinomas. We evaluated the diagnostic utility of immunohistochemistry for ANXA10, CLDN18, SOX2, and TFF1 for determining the site of origin for GI/PB adenocarcinomas.

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The electrochromic properties and application of electronically conducting polymers (ECPs) () consisting of a 3,4-ethylenedioxythiophene () and the heteroacene-based molecular scaffold, 6H-pyrrolo[3,2-b:4,5-b'] bis [1,4] benzothiazine (), are reported. Known for its high electron mobility and conducting properties, the novel scaffold was synthesized to possess two molecules termini affording . Electropolymerization of resulted in remarkable spectroscopic and conductive properties suitable for electrochromic device fabrication.

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  • - COVID-19 has led to over 3.5 million deaths and more than 160 million infections, with many individuals experiencing neurological issues, including loss of smell, seizures, and strokes, which can lead to long-term cognitive and neuropsychiatric problems regardless of the severity of respiratory symptoms.
  • - The article explores potential links between COVID-19 and neurological symptoms, particularly focusing on Alzheimer's disease and related dementias, while examining factors like inflammation and viral mechanisms that may cause such issues.
  • - A global research effort, the CNS SC2 consortium, is underway to standardize methods for studying the long-term effects of COVID-19 on brain health, with data collection occurring across multiple countries to improve overall understanding.
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Objective: A Smedley hand dynamometer is one of the standard devices for measuring handgrip strength (HGS) for children and adults. The aim was to compare the HGS values using two different types of dynamometers (Grip-A or Grip-D) in young children. To enable comparison between the two devices, we have redesigned the Grip-D (i.

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Selective factor Xa inhibitors effectively block coagulation cascade with a broader therapeutic window than multitargeted anticoagulants. They have evolved as a crucial part of prevention and treatment of thromboembolic diseases and in therapeutic protocols involved in many clinical trials in coronavirus disease 2019 (COVID-19) patients. Biologically-guided isolation of specific FXa inhibitors from licorice () root extract furnished ten flavonoids.

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Despite a recent growth in studies on cyberbullying, extant knowledge on the underlying mechanisms of cyberbullying remain limited. The objective of the present study is to explore the dynamics of cyberbullying via traditional bullying, self-control, and delinquent peer association. Specifically, the following hypotheses guide the present study: (1) traditional bullying, low self-control, and delinquent peer association are predictive of cyberbullying, respectively, (2) the interaction between traditional bullying and low self-control has a significant impact on cyberbullying, and (3) the interaction between traditional bullying and delinquent peer association has a significant impact on cyberbullying.

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Oxygen levels in vivo are autonomously regulated by a supply-demand balance, which can be altered in disease states. However, the oxygen levels of in vitro cell culture systems, particularly microscale cell culture, are typically dominated by either supply or demand. Further, the oxygen microenvironment in these systems is rarely monitored or reported.

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Patch size is one of the most important factors affecting the distribution and abundance of species, and recent research has shown that patch size is an important niche dimension affecting community structure in aquatic insects. Building on this result, we examined the impact of patch size in conjunction with presence of larval anurans on colonization by aquatic insects. (Cope's gray treefrog) larvae are abundant and early colonists in fishless lentic habitats, and these larvae can fill multiple ecological roles.

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As key performers in intercellular communication, exosomes released by tumor cells play an important role in cancer development, including angiogenesis, cancer-associated fibroblasts activation, epithelial-mesenchymal transformation (EMT), immune escape, and pre-metastatic niche formation. Meanwhile, other cells in tumor microenvironment (TME) can secrete exosomes and facilitate tumor progression. Elucidating mechanisms regarding these processes may offer perspectives for exosome-based antitumor strategies.

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Unlabelled: The prevalence of obesity is increasing across the world. Knowledge of the actual energy expenditure (EE) of walking and running can lead to a more precise exercise prescription which may contribute to obesity reduction or avoidance. Limited research has focused on EE prediction during walking or running in Asian adults.

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The challenges faced with current fluorescence imaging agents have motivated us to study two nanostructures based on a hydrophobic dye, 6-pyrrolo[3,2-:4,5-']bis [1,4]benzothiazine (TRPZ). TRPZ is a heteroacene with a rigid, pi-conjugated structure, multiple reactive sites, and unique spectroscopic properties. Here we coupled TRPZ to a tert-butyl carbamate (BOC) protected 2,2-bis(hydroxymethyl)propanoic acid (bisMPA) dendron via azide-alkyne Huisgen cycloaddition.

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This review aims to synthesize the evaluation evidence for parent-engagement programs that focus on reducing juvenile truancy as the primary outcome. Delinquent behavior will be assessed as a secondary outcome when included. This objective is guided by the following research questions: (1) what is the effectiveness of parent-engagement programs for children in preschool (ages 4-5) through secondary education (ages 13-19) on primarily (a) reducing student truancy (i.

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Trait differences among plant species can favor species coexistence. The role that such differences play in the assembly of diverse plant communities maintained by frequent fires remains unresolved. This lack of resolution results in part from the possibility that species with similar traits may coexist because none has a significant fitness advantage and in part from the difficulty of experimental manipulation of highly diverse assemblages dominated by perennial species.

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