1,241 results match your criteria: "Burnett School of Biomedical Sciences[Affiliation]"

Purpose: To assess the efficacy of a gelatin stent (XEN 45 Gel Stent; Allergan) implant in advanced glaucoma eyes that have failed prior aqueous shunt implantation.

Methods: We retrospectively reviewed 6 patients with refractory glaucoma, defined as persistently high IOP (> 21 mmHg) despite taking at least 3 IOP-lowering medications subsequent to undergoing a glaucoma drainage device (GDD) with or without a second GDD or cilioablative procedure. Eyes with previous failed GDD underwent subconjunctival 0.

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Natural killer (NK) cells can be effective immunotherapeutic anti-cancer agents due to their ability to selectively target and kill tumor cells. This activity is modulated by the interaction of NK cell receptors with inhibitory ligands on the surface of target cells. NK cell inhibitory ligands can be upregulated on tumor cell surfaces in response to interferon-gamma (IFN-γ), a cytokine which is produced by activated NK cells.

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This study, conducted between 4 October 2013, and 30 November 2018, tested the hypothesis that triple antimicrobial therapy, targeting subspecies (MAP), long considered a putative cause, would favorably affect Crohn's disease. A double-blind multicenter study of adults with active Crohn's disease, (i.e.

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Neuromodulatory co-expression in cardiac vagal motor neurons of the dorsal motor nucleus of the vagus.

iScience

August 2024

Daniel Baugh Institute of Functional Genomics/Computational Biology, Department of Pathology and Genomic Medicine, Thomas Jefferson University, Philadelphia, PA 19107, USA.

Vagal innervation is well known to be crucial to the maintenance of cardiac health, and to protect and recover the heart from injury. Only recently has this role been shown to depend on the activity of the underappreciated dorsal motor nucleus of the vagus (DMV). By combining neural tracing, transcriptomics, and anatomical mapping in male and female Sprague-Dawley rats, we characterize cardiac-specific neuronal phenotypes in the DMV.

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neutralization of IL-6 receptor exacerbates damage to intestinal epithelial cells during infection.

Front Immunol

August 2024

Division of Molecular Microbiology, Burnett School of Biomedical Sciences, College of Medicine. University of Central Florida, Orlando, FL, United States.

Like TNFα, IL-6 is upregulated in Crohn's disease (CD) especially in patients associated with (MAP) infection, and both cytokines have been targeted as a therapeutic option for the treatment of the disease despite the accepted partial response in some patients. Limited response to anti-IL-6 receptor-neutralizing antibodies therapy may be related to the homeostatic dual role of IL-6. In this study, we investigated the effects and the signaling mechanism of IL-6 involved in intestinal epithelial integrity and function during MAP infection using an model that consists of THP-1, HT-29 and Caco-2 cell lines.

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exploits xanthine and uric acid as nutrients by utilizing a selenium-dependent catabolic pathway.

Microbiol Spectr

October 2024

Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida, USA.

Selenium is a trace element that plays critical roles in redox biology; it is typically incorporated into "selenoproteins" as the 21st amino acid selenocysteine. Additionally, selenium exists as a labile non-selenocysteine cofactor in a small subset of selenoproteins known as selenium-dependent molybdenum hydroxylases (SDMHs). In purinolytic clostridia, SDMHs are implicated in the degradation of hypoxanthine, xanthine, and uric acid for carbon and nitrogen.

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Purpose: Healthcare professionals experience stressors that begin during training and persist into their careers that adversely impact their well-being. This study aims to identify students' and professionals' stress levels, satisfaction with wellness domains, barriers to wellness, and stress management practices.

Design: This study was a cross-sectional self-reported survey study.

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Introduction: Men with African ancestry have the highest incidence and mortality rates of prostate cancer (PCa) worldwide.

Methods: This study aimed to identify differentially methylated genes between tumor vs. adjacent normal and aggressive vs.

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Article Synopsis
  • - Head and neck cancers are becoming increasingly common, often requiring radiation therapy, which can cause significant skin injuries in the neck area due to its exposure to various harmful elements during treatment.
  • - The existing research on radiation-induced skin injury (RISI) is inconsistent, with a notable lack of well-designed studies addressing both acute and chronic forms of RISI.
  • - The article aims to discuss the causes of RISI, its symptoms, prevention strategies, and treatment options, ultimately proposing a treatment algorithm to manage these skin injuries effectively.
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Background: The chloride intracellular channels (CLICs) family includes six ion channels (CLIC1-CLIC6) expressed on the cellular level and secreted into interstitial fluid and blood. They are involved in the physiological functioning of multiple systems as well as the pathogenetic processes of cancer. CLICs play essential roles in the tumor microenvironment.

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Evidence shows that Autism Spectrum Disorder (ASD) stems from an interplay of genetic and environmental factors, which may include propionic acid (PPA), a microbial byproduct and food preservative. We previously reported that in vitro treatment of neural stem cells with PPA leads to gliosis and neuroinflammation. In this study, mice were exposed ad libitum to a PPA-rich diet for four weeks before mating.

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Chloroformate-mediated ring cleavage of indole alkaloids leads to re-engineered antiplasmodial agents.

Org Biomol Chem

October 2024

Department of Medicinal Chemistry, Center for Natural Product Drug Discovery & Development (CNPD3), College of Pharmacy, University of Florida, Gainesville, Florida 32610, USA.

Natural product ring distortion strategies have enabled rapid access to unique libraries of stereochemically complex compounds to explore new chemical space and increase our understanding of biological processes related to human disease. Herein is described the development of a ring-cleavage strategy using the indole alkaloids yohimbine, apovincamine, vinburnine, and reserpine that were reacted with a diversity of chloroformates paired with various alcohol/thiol nucleophiles to enable the rapid synthesis of 47 novel small molecules. Ring cleavage reactions of yohimbine and reserpine produced two diastereomeric products in moderate to excellent yields, whereas apovincamine and vinburnine produced a single diastereomeric product in significantly lower yields.

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Senescent cells have been linked to the pathogenesis of metabolic dysfunction-associated steatotic liver disease (MASLD). However, the effectiveness of senolytic drugs in reducing liver damage in mice with MASLD is not clear. Additionally, MASLD has been reported to adversely affect male reproductive function.

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Article Synopsis
  • This text indicates a correction has been made to a previously published article.*
  • The article in question has the DOI 10.1016/j.lana.2024.100786, which identifies it uniquely in academic databases.*
  • Corrections like this typically address errors or omissions in the original publication to clarify the findings or methods used.*
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This review explores the relationship between ovarian aging and senescent cell accumulation, as well as the efficacy of senolytics to improve reproductive longevity. Reproductive longevity is determined by the age-associated decline in ovarian reserve, resulting in reduced fertility and eventually menopause. Cellular senescence is a state of permanent cell cycle arrest and resistance to apoptosis.

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3'-UTR Sequence of Exosomal NANOGP8 DNA as an Extracellular Vesicle-Localization Signal.

Int J Mol Sci

July 2024

Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL 32816, USA.

Extracellular vesicles (EVs) are garnering attention as a safe and efficient biomolecule delivery system. EVs intrinsically play a crucial role in intercellular communication and pathophysiology by transporting functionally active DNA molecules. The internalized DNA pleiotropically affects the recipient cells.

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Ames dwarf mice (df/df) display delayed aging relative to their normal (N) siblings, living approximately 40-60 % longer. As such, investigating the mechanisms that enable these organisms to have extended lifespan is useful for the development of interventions to slow aging and deter age-related disease. Nonalcoholic fatty liver disease (NAFLD) is a condition that is characterized by the accumulation of excess adipose tissue in the liver.

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Selective nitration of Hsp90 acts as a metabolic switch promoting tumor cell proliferation.

Redox Biol

September 2024

Department of Biochemistry and Biophysics, College of Science, Oregon State University, Corvallis, OR, 97331, USA; Center for Translational Science, Florida International University, Florida, 34987, USA; Department of Cellular and Molecular Medicine, Herbert Wertheim College of Medicine, Florida International University, Florida, 33199, USA. Electronic address:

Tumors develop in an oxidative environment characterized by peroxynitrite production and downstream protein tyrosine (Y) nitration. We showed that tyrosine nitration supports schwannoma cell proliferation and regulates cell metabolism in the inheritable tumor disorder NF2-related Schwannomatosis (NF2-SWN). Here, we identified the chaperone Heat shock protein 90 (Hsp90) as the first nitrated protein that acts as a metabolic switch to promote schwannoma cell proliferation.

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SMAD4 is a tumor suppressor mutated or silenced in multiple cancers, including oral cavity squamous cell carcinoma (OSCC). Human clinical samples and cell lines, mouse models and organoid culture were used to investigate the role that SMAD4 plays in progression from benign disease to invasive OSCC. Human OSCC lost detectable SMAD4 protein within tumor epithelium in 24% of cases, and this loss correlated with worse progression-free survival independent of other major clinical and pathological features.

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Impact of repeated ovarian hyperstimulation on the reproductive function.

J Reprod Immunol

August 2024

Graduate Program in Medical Sciences, Universidade de Fortaleza (UNIFOR), Fortaleza, CE 60.811-905,  Brazil; Medical School, Universidade de Fortaleza (UNIFOR), Fortaleza, CE 60.811-905, Brazil; CONCEPTUS - Reproductive Medicine, Fortaleza, CE 60.170-240, Brazil. Electronic address:

One of six couples (17.5 % of the adult population) worldwide is affected by infertility during their lifetime. This number represents a substantial increase in the prevalence of this gynecological condition over the last decade.

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Orphan response regulator NnaR is critical for nitrate and nitrite assimilation in .

Front Cell Infect Microbiol

June 2024

Division of Immunity and Pathogenesis, Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL, United States.

() is an opportunistic pathogen afflicting individuals with underlying lung disease such as Cystic Fibrosis (CF) or immunodeficiencies. Current treatment strategies for infections are limited by its inherent antibiotic resistance and limited drug access to in its niches resulting in poor cure rates of 30-50%. ability to survive within macrophages, granulomas and the mucus laden airways of the CF lung requires adaptation via transcriptional remodeling to counteract stresses like hypoxia, increased levels of nitrate, nitrite, and reactive nitrogen intermediates.

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Background: This study focuses on urban arboviruses, specifically dengue (DENV), chikungunya (CHIKV), and Zika (ZIKV), which pose a significant public health challenge in Rio de Janeiro state, Southeast Brazil. In our research, we highlight critical findings on the transmission dynamics of these arboviruses in Rio de Janeiro, identifying distinct patterns of disease spread.

Methods: By combining genomic data with case reports from the Brazilian Ministry of Health, we have analysed the phylogenetics, prevalence and spatial distribution of these endemic viruses within the state.

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Towards realizing nano-enabled precision delivery in plants.

Nat Nanotechnol

September 2024

The Connecticut Agricultural Research Station, New Haven, CT, USA.

Nanocarriers (NCs) that can precisely deliver active agents, nutrients and genetic materials into plants will make crop agriculture more resilient to climate change and sustainable. As a research field, nano-agriculture is still developing, with significant scientific and societal barriers to overcome. In this Review, we argue that lessons can be learned from mammalian nanomedicine.

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Natural product libraries are crucial to drug development, but large libraries drastically increase the time and cost during initial high throughput screens. Here, we developed a method that leverages liquid chromatography-tandem mass spectrometry spectral similarity to dramatically reduce library size, with minimal bioactive loss. This method offers a broadly applicable strategy for accelerated drug discovery with cost reductions, which enable implementation in resource-limited settings.

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Understanding the Antiplasmodial Action of Resistance-Refractory Xanthoquinodin A1.

ACS Infect Dis

June 2024

Division of Molecular Microbiology, Burnett School of Biomedical Sciences, University of Central Florida, 12722 Research Parkway, Orlando, Florida 32826, United States.

Our previous work identified a series of 12 xanthoquinodin analogues and 2 emodin-dianthrones with broad-spectrum activities against , , , and . Analyses conducted in this study revealed that the most active analogue, xanthoquinodin A1, also inhibits tachyzoites and the liver stage of , with no cross-resistance to the known antimalarial targets PfACS, PfCARL, PfPI4K, or DHODH. In , inhibition occurs prior to multinucleation and induces parasite death following 12 h of compound exposure.

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