6,398 results match your criteria: "Medical Center at Dallas[Affiliation]"

Excessive gluconeogenesis can lead to hyperglycemia and diabetes through as yet incompletely understood mechanisms. Herein, we show that hepatic ZBTB22 expression is increased in both diabetic clinical samples and mice, being affected by nutritional status and hormones. Hepatic ZBTB22 overexpression increases the expression of gluconeogenic and lipogenic genes, heightening glucose output and lipids accumulation in mouse primary hepatocytes (MPHs), while ZBTB22 knockdown elicits opposite effects.

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Study Objectives: We sought to identify reasons for early polysomnography termination in pediatric patients.

Methods: We retrospectively reviewed all studies conducted at the Pediatric Sleep Center at UT Southwestern Medical Center from January 1, 2017, through December 31, 2019, that were terminated before study completion. We investigated reasons for early termination and gathered characteristics such as age, sex, presence of neurocognitive impairment, payor status, seasonal variability, and testing site location.

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Neurofibromatosis type 1 (NF1) is one of the most common tumor-predisposing genetic disorders. Neurofibromas are NF1-associated benign tumors. A hallmark feature of neurofibromas is an abundant collagen-rich extracellular matrix (ECM) that constitutes more than 50% of the tumor dry weight.

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Mayer-Rokitansky-Küster-Hauser (MRKH) syndrome is characterized by aplasia of the female reproductive tract; the syndrome can include renal anomalies, absence or dysgenesis, and skeletal anomalies. While functional models have elucidated several candidate genes, only (MIM: 603490) variants have been definitively associated with a subtype of MRKH with hyperandrogenism (MIM: 158330). DNA from 148 clinically diagnosed MRKH probands across 144 unrelated families and available family members from North America, Europe, and South America were exome sequenced (ES) and by family-based genomics analyzed for rare likely deleterious variants.

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Article Synopsis
  • Wearing a cloth face mask during exercise significantly reduces exercise performance metrics like duration and peak oxygen uptake in young adults.
  • The study involved 35 participants undergoing maximal cardiopulmonary exercise tests with and without masks while also performing a cognitive task.
  • Despite the negative impact on physical performance, the use of a cloth face mask did not affect cognitive performance during the tests.
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Article Synopsis
  • The study assessed whether the occurrence and severity of non-A-E severe acute hepatitis in children surged between late 2021 and early 2022 compared to prior years.
  • A retrospective analysis of children's medical records revealed a significant increase in cases from an average of 16.3 annually (2018-2021) to 33 cases in 2021-2022.
  • The rise was linked to more viral infections, particularly adenovirus and SARS-CoV-2, though the survival rates remained high at approximately 91.4%.
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Is Presurgical Pain Intensity Related to Postoperative Recurrence of Post-Traumatic Trigeminal Neuropathic Pain?

J Oral Maxillofac Surg

July 2023

Robert V. Walker DDS Endowed Chair in Oral and Maxillofacial Surgery, Division of Oral and Maxillofacial Surgery, Professor, Departments of Surgery and Neurology, University of Texas Southwestern Medical Center at Dallas, Dallas, TX.

Purpose: Post-traumatic trigeminal neuropathic pain (PTTNp) is a challenging condition to treat, and equally as challenging is the identification of surgical outcome variables to guide treatment. The study purpose was to determine if preoperative pain intensity was related to postoperative recurrence of PTTNp.

Materials And Methods: This retrospective cohort study assessed subjects at a single institution with preoperative PTTNp of either the lingual or inferior alveolar nerves who underwent elective microneurosurgery.

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The modeling of neuropathology on induced neurons obtained by cell reprogramming technologies can fill a gap between clinical trials and studies on model organisms for the development of treatment strategies for neurodegenerative diseases. Patient-specific models based on patients' cells play an important role in such studies. There are two ways to obtain induced neuronal cells.

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Objective: To evaluate the effects of guideline-driven prophylactic supplementation of a multi-strain neonatal intensive care unit-specific probiotic product on infants born very preterm (VP) or very low birth weight (VLBW).

Study Design: A prospective cohort of 125 infants born in one year after implementation who received probiotics were compared to a retrospective cohort of eligible 126 VP or VLBW infants who did not receive probiotics. The primary outcome of interest was necrotizing enterocolitis (NEC).

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Aims: To describe the clinical features, imaging characteristics, histopathology, treatment and outcomes of intraocular medulloepithelioma.

Methods: Medical records of 11 patients with clinically or histopathologically confirmed medulloepithelioma were retrieved and reviewed. Clinical features, diagnostic challenges, imaging characteristics, management, histopathology and prognosis were assessed.

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Update: Pictorial Guide to CAD-RADS 2.0.

Radiographics

April 2023

From the Department of Radiology, UT Southwestern Medical Center at Dallas, 5323 Harry Hines Blvd, Dallas, TX 75390 (A.C., F.U.K., M.F.B., S.A.); and Department of Radiology, Mayo Clinic, Rochester, Minn (P.S.R.).

.- Update articles supplement or update information found in full-length articles previously published in . These updates, written by at least one author of the previous article, provide a brief synopsis that emphasizes important new information such as technological advances, revised imaging protocols, new clinical guidelines involving imaging, or updated classification schemes.

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Importance: The American Academy of Otolaryngology-Head and Neck Surgery Foundation has recommended yearly surgeon self-monitoring of posttonsillectomy bleeding rates. However, the predicted distribution of rates to guide this monitoring remain unexplored.

Objective: To use a national cohort of children to estimate the probability of bleeding after pediatric tonsillectomy to guide surgeons in self-monitoring of this event.

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Intestinal epithelial cells (IECs) constitute a critical first line of defense against microbes. While IECs are known to respond to various microbial signals, the precise upstream cues regulating diverse IEC responses are not clear. Here, we discover a dual role for IEC-intrinsic interleukin-1 receptor (IL-1R) signaling in regulating intestinal homeostasis and inflammation.

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Polygenic risk score penetrance & recurrence risk in familial Alzheimer disease.

Ann Clin Transl Neurol

May 2023

Department of Neurology, Taub Institute for Research on Alzheimer's Disease and the Aging Brain and the Gertrude H. Sergievsky Center, Columbia University and the New York Presbyterian Hospital, New York, New York, USA.

Objective: To compute penetrance and recurrence risk using a genome-wide PRS (including and excluding the APOE region) in families with Alzheimer's disease.

Methods: Genotypes from the National Institute on Aging Late-Onset Alzheimer's Disease Family-Based Study and a study of familial Alzheimer's disease in Caribbean Hispanics were used to compute PRS with and without variants in the 2 MB region flanking APOE. PRS was calculated in using clumping/thresholding and Bayesian methods and was assessed for association with Alzheimer's disease and age at onset.

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Objective: To estimate the incidence of inpatient and ambulatory pediatric tonsillectomies in the United States in 2019.

Study Design: Cross-sectional analysis.

Setting: Healthcare Cost and Utilization Project databases.

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A woman with a normal uterus and duplicated cervices: A case report and review of a Müllerian anomaly.

Case Rep Womens Health

March 2023

Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology, University of Texas Southwestern Medical Center at Dallas, 5323 Harry Hines Blvd, Dallas, TX 75390, USA.

Müllerian duct anomalies (MDAs) are common and can lead to problems with menstrual flow, pregnancy, and fertility. This is a case report of a 21-year-old woman with an incidentally found bicollis uterus with vaginal septum, which challenges the previously held principles of embryology and further supports the current theories that explain these transitional forms of female reproductive anomalies. Due to the irregularity found during the physical examination, detailed imaging with magnetic resonance helped to delineate the anatomy of the reproductive system and genitourinary (GU) tract, uncovering and confirming the anatomical abnormality.

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BACKGROUNDHepatic de novo lipogenesis (DNL) and β-oxidation are tightly coordinated, and their dysregulation is thought to contribute to the pathogenesis of nonalcoholic fatty liver (NAFL). Fasting normally relaxes DNL-mediated inhibition of hepatic β-oxidation, dramatically increasing ketogenesis and decreasing reliance on the TCA cycle. Thus, we tested whether aberrant oxidative metabolism in fasting NAFL subjects is related to the inability to halt fasting DNL.

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Alzheimer's disease (AD) is the most common cause of dementia. An early feature of the AD pathology is the dysregulation of intracellular Ca signaling in neurons. In particular, increased Ca release from endoplasmic reticulum-located Ca channels, including inositol-1,4,5-trisphosphate type 1 receptors (IPR1) and ryanodine receptors type 2 (RyR2), have been extensively reported.

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Proteins destined for the secretory compartment of the cell are cotranslationally translocated into the endoplasmic reticulum. The majority of these proteins are N-glycosylated, a co- and posttranslational modification that ensures proper protein folding, stability, solubility, and cellular localization. Here, we show that the [Formula: see text] subunit of the signal recognition particle receptor (SR) is required for assembly of the N-glycosylation-competent translocon.

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Whole Central and Peripheral Nervous System Mice Dissection.

J Vis Exp

February 2023

Department of Biochemistry and Functional Genomics, Université de Sherbrooke; Centre de Recherche du Centre Hospitalier de Universitaire de Sherbrooke, Université de Sherbrooke;

Animal models represent the workhorse of the neuroscience field. Despite this, today, there is still no step-by-step protocol to dissect a complete rodent nervous system, nor is there a complete schematic representing it that is freely available. Only methods to harvest the brain, the spinal cord, a specific dorsal root ganglion, and the sciatic nerve (separately) are available.

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Importance: In January 2011, the US Food and Drug Administration (FDA) announced a mandate to limit acetaminophen (paracetamol) to 325 mg/tablet in combination acetaminophen and opioid medications, with manufacturer compliance required by March 2014.

Objective: To assess the odds of hospitalization and the proportion of acute liver failure (ALF) cases with acetaminophen and opioid toxicity prior to and after the mandate.

Design, Setting, And Participants: This interrupted time-series analysis used hospitalization data from 2007-2019 involving ICD-9/ICD-10 codes consistent with both acetaminophen and opioid toxicity from the National Inpatient Sample (NIS), a large US hospitalization database, and ALF cases from 1998-2019 involving acetaminophen and opioid products from the Acute Liver Failure Study Group (ALFSG), a cohort of 32 US medical centers.

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Purpose: The purpose of this study was to determine the accuracy of electronic hip pain drawing to diagnose intra-articular source of pain in nonarthritic hips, defined by response to an intra-articular injection.

Methods: A retrospective assessment was performed in consecutive patients who had an intra-articular injection completed within a 1-year period. Patients were classified as responders or nonresponders to intra-articular hip injection.

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Adenoid cystic carcinoma (AdCC) is an uncommon type of invasive breast carcinoma with a favorable prognosis. However, some cases are aggressive. The study aims to define the clinicopathologic predictors of outcome.

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Development of a Covalent Inhibitor of c-Jun N-Terminal Protein Kinase (JNK) 2/3 with Selectivity over JNK1.

J Med Chem

March 2023

Department of Chemical and Systems Biology, Chem-H, and Stanford Cancer Institute, Stanford School of Medicine, Stanford University, Stanford, California 94305, United States.

The c-Jun N-terminal kinases (JNKs) are members of the mitogen-activated protein kinase (MAPK) family, which includes JNK1-JNK3. Interestingly, JNK1 and JNK2 show opposing functions, with JNK2 activity favoring cell survival and JNK1 stimulating apoptosis. Isoform-selective small molecule inhibitors of JNK1 or JNK2 would be useful as pharmacological probes but have been difficult to develop due to the similarity of their ATP binding pockets.

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