69,868 results match your criteria: "Southwestern Medical Center; erik.kulstad@utsouthwestern.edu.[Affiliation]"

(PA) is an opportunistic gram-negative pathogen that can infect the cornea, leading to permanent vision loss. Autophagy is a cannibalistic process that drives cytoplasmic components to the lysosome for degradation and/or recycling. Autophagy has been shown to play a key role in the removal of intracellular pathogens and, as such, is an important component of the innate immune response.

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Breast cancer is a cancer with global prevalence and a surge in the number of cases with each passing year. With the advancement in science and technology, significant progress has been achieved in the prevention and treatment of breast cancer to make ends meet. The scientific intradisciplinary subject of "metabolomics" examines every metabolite found in a cell, tissue, system, or organism from different sources of samples.

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There should be no assumption that an athlete is immune to coronary artery disease (CAD), even when traditional cardiovascular (CV) risk factors appear well-managed. Excelling in certain aspects of health does not equate to total CV protection. Recent data from cardiac imaging studies have raised the possibility that long-term, high-volume, high-intensity endurance exercise is associated with coronary atherosclerosis.

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Background: The use of mechanical circulatory support devices for high-risk percutaneous coronary intervention (PCI) has increased over the past decade despite limited data of benefit. We sought to examine the association between intravascular microaxial left ventricular assist device (LVAD) versus intra-aortic balloon pump use in patients without cardiogenic shock (CS) undergoing PCI.

Methods And Results: This retrospective study analyzed claims data from a large, insured population who underwent PCI without CS from April 1, 2016 to July 31, 2022.

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A pan-tumor review of the role of poly(adenosine diphosphate ribose) polymerase inhibitors.

CA Cancer J Clin

January 2025

Division of Medical Oncology, Department of Internal Medicine, Huntsman Cancer Institute, University of Utah, Salt Lake City, Utah, USA.

Poly(adenosine diphosphate ribose) polymerase (PARP) inhibitors, such as olaparib, talazoparib, rucaparib, and niraparib, comprise a therapeutic class that targets PARP proteins involved in DNA repair. Cancer cells with homologous recombination repair defects, particularly BRCA alterations, display enhanced sensitivity to these agents because of synthetic lethality induced by PARP inhibitors. These agents have significantly improved survival outcomes across various malignancies, initially gaining regulatory approval in ovarian cancer and subsequently in breast, pancreatic, and prostate cancers in different indications.

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An 83-year-old male with a history of radial keratotomy and laser-assisted in situ keratomileusis (LASIK) presented with symptoms of a non-resolving corneal ulcer in the right eye that had been present for five months. The patient was treated with antibacterial, antiviral, and antifungal medications over that period, with multiple recurrences that prompted referral to our tertiary center for management. Following a 48-hour cessation of all medications, a corneal biopsy was performed which grew .

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Background: In small children with left atrioventricular valve dysfunction, valve repair is preferred but some will require valve replacement. No prosthetic valve has growth potential, bioprostheses have poor durability, and mechanical prostheses have high rates of thromboembolic and hemorrhagic complications. We reviewed our experience with a modified bovine jugular vein valve designed for use in the right ventricular outflow tract (Melody valve, Medtronic) and compared this with contemporary mechanical valve replacement.

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Objective: To test whether race/ethnicity affects stage or grade distribution at upper tract urothelial carcinoma (UTUC) diagnosis.

Methods: Within the Surveillance, Epidemiology, and End Results (SEER) database 2004-2020, UTUC patients were identified. Multivariable logistic regression models tested for the association between race/ethnicity and stage as well as grade at diagnosis according to renal pelvis vs.

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Impact of population screening for Lynch syndrome insights from the All of Us data.

Nat Commun

January 2025

Division of Digestive and Liver Diseases, Herbert Irving Comprehensive Cancer Center, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, NY, USA.

Lynch Syndrome (LS) is a common genetic cancer condition that allows for personalized cancer prevention and early cancer detection in identified gene carriers. We used data from the All of Us (AOU) Research Initiative to assess the prevalence of LS in the general U.S.

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Background: Diffusion-weighted (DW) turbo-spin-echo (TSE) imaging offers improved geometric fidelity compared to single-shot echo-planar-imaging (EPI). However, it suffers from low signal-to-noise ratio (SNR) and prolonged acquisition times, thereby restricting its applications in diagnosis and MRI-guided radiotherapy (MRgRT).

Purpose: To develop a joint k-b space reconstruction algorithm for concurrent reconstruction of DW-TSE images and the apparent diffusion coefficient (ADC) map with enhanced image quality and more accurate quantitative measurements.

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Background: Determining why some upper respiratory illnesses provoke asthma exacerbations remains an unmet need.

Objective: To identify transcriptome-wide gene expression changes associated with colds that progress to exacerbation.

Methods: 208 urban children (6-17 years) with exacerbation-prone asthma were prospectively monitored for up to two cold illnesses.

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Contour uncertainty assessment for MD-omitted daily adaptive online head and neck radiotherapy.

Radiother Oncol

January 2025

Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA; Medical Artificial Intelligence and Automation Laboratory, Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA. Electronic address:

Background And Purpose: Daily online adaptive radiotherapy (DART) increases treatment accuracy by crafting daily customized plans that adjust to the patient's daily setup and anatomy. The routine application of DART is limited by its resource-intensive processes. This study proposes a novel DART strategy for head and neck squamous cell carcinoma (HNSCC), automizing the process by propagating physician-edited treatment contours for each fraction.

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DNA damage and its links to neuronal aging and degeneration.

Neuron

January 2025

Departments of Psychiatry, Neuroscience, and Cell Biology, University of Texas Southwestern Medical Center, Dallas, TX, USA; Peter O' Donnell Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX, USA. Electronic address:

DNA damage is a major risk factor for the decline of neuronal functions with age and in neurodegenerative diseases. While how DNA damage causes neurodegeneration is still being investigated, innovations over the past decade have provided significant insights into this issue. Breakthroughs in next-generation sequencing methods have begun to reveal the characteristics of neuronal DNA damage hotspots and the causes of DNA damage.

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Untargeted metabolomics analysis as a potential screening tool for 3-methylglutaconic aciduria syndromes.

Mol Genet Metab

December 2024

Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA; Texas Children's Hospital, Houston, TX, USA; BCM-CUHK Center of Medical Genetics, Prince of Wales Hospital, Hong Kong, China.

The 3-methylglutaconic aciduria (3-MGA-uria) syndromes comprise a heterogeneous group of inborn errors of metabolism defined biochemically by detectable elevation of 3-methylglutaconic acid (3-MGA) in the urine. In type 1 (or primary) 3-MGA-uria, distal defects in the leucine catabolism pathway directly cause this elevation. Secondary 3-MGA-uria syndromes, however, are unrelated to leucine metabolism-specific defects but share a common biochemical phenotype of elevated 3-MGA.

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Itaconate drives pro-inflammatory responses through proteasomal degradation of GLO1.

Biochem Biophys Res Commun

February 2025

2nd Ward of Oncology Department, China-Japan Union Hospital of Jilin University, Changchun, Jilin, 130031, China. Electronic address:

Itaconate is a small-molecule metabolite generated by the enzyme aconitate decarboxylase 1 (ACOD1), which is upregulated during inflammation. Traditionally, itaconate has been recognized for its anti-inflammatory properties; however, this study reveals a pro-inflammatory mechanism of itaconate in macrophages. We demonstrate that itaconate promotes the proteasomal degradation of glyoxalase 1 (GLO1) via Cys139.

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Purpose: Sleep deprivation and elevated blood pressure (BP) increase the risk of cardiovascular diseases. However, the effects of sleep deprivation on BP response, especially at exercise onset remain unclear. We aimed to elucidate the effects of experimental sleep deprivation (ESD) on resting and exercise BPs, including that at exercise onset, and investigate whether a night-time nap during ESD changes the ESD-altered BP.

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Hepatic arterial infusion therapy involves surgically implanting a subcutaneous hepatic arterial infusion pump with the catheter tip at the hepatic artery. This pump directly delivers chemotherapy to the liver, which may reduce systemic toxicity, improve resectability, and treat unresectable hepatic lesions. This therapy is used in primary or metastatic hepatic malignancies.

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Disparities in Skin Cancer Outcomes in the Latine/Hispanic Population.

Cutis

November 2024

Dr. Valencia is from the Department of Internal Medicine, John Hopkins Bayview Medical Center, Baltimore, Maryland. Fabiola Ramirez is from the Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso. Claudia Dubocq-Ortiz is from the University of Puerto Rico School of Medicine, Medical School Campus, San Juan. Dr. Vasquez is from the Department of Dermatology, UT Southwestern Medical Center, Dallas.

Article Synopsis
  • Latine/Hispanic individuals, while having a lower overall lifetime risk for skin cancer, face higher morbidity and mortality rates in skin cancer outcomes compared to non-Hispanic White individuals.
  • Key factors contributing to these disparities include challenges in early detection, limited awareness of risks, and inequitable access to care.
  • The article reviews unique clinical features, health coverage issues, medical mistrust, language barriers, and cultural differences, emphasizing the need for better education and equitable treatment strategies.
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Unraveling the metabolism of Treponema pallidum is a key component to understanding the pathogenesis of the human disease that it causes, syphilis. For decades, it was assumed that glucose was the sole carbon/energy source for this parasitic spirochete. But the lack of citric-acid-cycle enzymes suggested that alternative sources could be utilized, especially in microaerophilic host environments where glycolysis should not be robust.

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Introduction: Athletes with concussions experience heterogeneous symptoms and clinical trajectories. Subclassification provides diagnostic clarity that may improve prognostication and individualized treatments.

Methods: We hypothesized that endophenotypes of adolescent athletes with concussions differ based on sex and time since injury.

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Importance: Atrial fibrillation (AF) is the most common, chronic, cardiac arrythmia in older US adults. It is not known whether AF is independently associated with increased risk of retinal stroke (central retinal artery occlusion), a subtype of ischemic stroke that causes severely disabling visual loss in most cases and is a harbinger of further vascular events.

Objective: To determine whether there is an association between AF and retinal stroke.

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Purpose: Studies of healthcare encounters leading to cancer diagnosis have increased over recent years. While some studies examine healthcare utilization before the cancer registry date of diagnosis, relevant pre-diagnosis interactions are not always immediately prior to this date due to date abstraction guidelines. We evaluated agreement of a registry date with a claims-based index and examined Emergency Department (ED) involvement in cancer diagnosis as an example of possible pre-diagnostic healthcare misclassification that could arise from improper date choice.

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