Medical Specialties Commons^™

Optimizing Nutrition Status And Patient Outcomes In Adults Receiving Post-Icu Care, Rachelle Pass

Theses and Graduate Projects

Background: Nutrition interventions for hospitalized patients can provide meaningful benefit on patient recovery outcome, length of hospital admission, and overall healthcare costs. Preventing and treating malnutrition is one aspect of optimizing patient outcomes following a prolonged clinical course, including stays in the intensive care unit (ICU).

Purpose: This literature review aims to address how nutrition status can be maximized for a patient’s post intensive care unit clinical course. While early enteral nutrition (EN) when appropriate is accepted as optimal care, there is little standardization for removal of devices to provide artificially administered nutrition and hydration (AANH).

Methods: A comprehensive literature …

Dual Inhibition Of The Trka And Jak2 Pathways Using Entrectinib And Pacritinib Suppresses The Growth And Metastasis Of Her2-Positive And Triple-Negative Breast Cancers, Angelina T Regua, Shivani Bindal, Mariana K Najjar, Chuling Zhuang, Munazza Khan, Austin B J Arrigo, Anneliese O Gonzalez, Xinhai R Zhang, Jay-Jiguang Zhu, Kounosuke Watabe, Hui-Wen Lo

Faculty, Staff and Student Publications

HER2-positive and triple-negative breast cancers (TNBC) are difficult to treat and associated with poor prognosis. Despite showing initial response, HER2-positive breast cancers often acquire resistance to HER2-targeted therapies, and TNBC lack effective therapies. To overcome these clinical challenges, we evaluated the therapeutic utility of co-targeting TrkA and JAK2/STAT3 pathways in these breast cancer subtypes. Here, we report the novel combination of FDA-approved TrkA inhibitors (Entrectinib or Larotrectinib) and JAK2 inhibitors (Pacritinib or Ruxolitinib) synergistically inhibited in vitro growth of HER2-positive breast cancer cells and TNBC cells. The Entrectinib-Pacritinib combination inhibited the breast cancer stem cell subpopulation, reduced expression of stemness …

Bispecific Antibodies And Autologous Chimeric Antigen Receptor T Cell Therapies For Treatment Of Hematological Malignancies, Samer Al Hadidi, Helen E Heslop, Malcolm K Brenner, Masataka Suzuki

Faculty, Staff and Students Publications

In recent years, the therapeutic landscape for hematological malignancies has markedly advanced, particularly since the inaugural approval of autologous chimeric antigen receptor T cell (CAR-T) therapy in 2017 for relapsed/refractory acute lymphoblastic leukemia (ALL). Autologous CAR-T therapy involves the genetic modification of a patient's T cells to specifically identify and attack cancer cells, while bispecific antibodies (BsAbs) function by binding to both cancer cells and immune cells simultaneously, thereby triggering an immune response against the tumor. The subsequent approval of various CAR-T therapies and BsAbs have revolutionized the treatment of multiple hematological malignancies, highlighting high response rates and a subset …

Effects Of E-Cigarettes On The Lung And Systemic Metabolome In People With Hiv, Aline Zaparte, Courtney J. Christopher, Connie Arnold, Lauren Richey, Adairre Castille, Kyle Mistretta, Christopher M. Taylor, Huiyi Lin, Steve Nelson, John P. Kirwan, John W. Apolzan, Shawn R. Campagna, David A. Welsh

School of Medicine Faculty Publications

The popularity of e-cigarettes (vaping) has soared, creating a public health crisis among teens and young adults. Chronic vaping can induce gut inflammation and reduce intestinal barrier function through the production of the proinflammatory molecule hydrogen sulfide (H2S). This is particularly concerning for people with HIV (PWH) as they already face impaired immune function and are at a higher risk for metabolic dysregulation, diabetes, and chronic liver disease. Furthermore, PWH experience unhealthy behaviors, making it crucial to understand the systemic metabolic dysregulation and pathophysiological mechanisms associated with vaping in this population. Here, we employed liquid chromatography–mass spectrometry (LC-MS)-based metabolomics to …

Pembrolizumab Induced Hyponatremia. A Case Report, Mouna Reghis, Taanvi Gowdar, Arjun Sekar

Advances in Clinical Medical Research and Healthcare Delivery

Hyponatremia is the most common electrolyte abnormality inpatient. Medications are a common cause of this. Cancer treatment has evolved with immune check point inhibitors replacing conventional chemotherapy agents. Pembrolizumab, which is a program cell death receptor-1 ligand has been shown to cause endocrinopathies. We describe a case of hyponatremia due to pembrolizumab

Cocaine As A Rare Cause Of Cholecystitis, Abdullah A. Orakzai, Osama Sherjeel Khan, Mustafa Shah, Syeda Sarah Raza, Mehr A. Orakzai, Muhammad H. Sharif

Advances in Clinical Medical Research and Healthcare Delivery

Cholecystitis, inflammation of the gallbladder, is diagnosed in approximately 200,000 people in the US each year. Cocaine is an illicit drug that is wildly abused in the US, GI complications such as acute pancreatitis, colitis, bowel perforation, mesenteric ischemia, and biliary tree obstruction have been reported in limited studies. To the best of our knowledge, there are no reported cases of cocaine-induced cholecystitis and no established treatment plans to date, however, we strongly believe that our patient’s cocaine use resulted in cholecystitis. Hence, we wanted to shed some light on the possible side effects of cocaine on the gall bladder.

Population-Level Trends In Self-Reported Healthcare Utilization Among Older Adults In Mexico With And Without Cognitive Impairment, José Eduardo Cabrero Castro, Rebeca Wong, Rafael Samper Ternent, Brian Downer

Faculty, Staff and Student Publications

BACKGROUND: Older adults with cognitive impairment exhibit different patterns of healthcare utilization compared to their cognitively healthy counterparts. Despite extensive research in high-income countries, similar studies in low- and middle-income countries are lacking. This study aims to investigate the population-level patterns in healthcare utilization among older adults with and without cognitive impairment in Mexico.

METHODS: Data came from five waves (2001-2018) of the Mexican Health and Aging Study. We used self-reported measures for one or more over-night hospital stays, doctor visits, visits to homeopathic doctors, and dental visits in the past year; seeing a pharmacist in the past year; and …

Gastrocnemius Electrical Stimulation Increases Ankle Dorsiflexion Strength In Patients With Post-Acute Sequelae Of Sars-Cov-2 (Pasc): A Double-Blind Randomized Controlled Trial, Myeounggon Lee, Alejandro Zulbaran-Rojas, Miguel Bargas-Ochoa, Bernardo Martinez-Leal, Rasha Bara, Areli Flores-Camargo, M G Finco, Ram Kinker Mishra, Jaewon Beom, Dipaben Modi, Fidaa Shaib, Bijan Najafi

Faculty, Staff and Students Publications

Post-Acute sequelae of SARS-CoV-2 (PASC) is a multisystem disorder causing persistent musculoskeletal deconditioning and reduced lower extremity strength. Electrical stimulation (E-Stim) to the gastrocnemius muscle can enhance strength outcomes by increasing the frequency of muscle fiber activation. We investigated its effect on individuals with PASC. Participants were randomized into intervention (IG) or control (CG) groups. The IG self-administered daily one-hour E-Stim to both their gastrocnemius muscles using a functional device over 4-week, while the CG used a sham device. Primary outcomes were ankle dorsiflexion strength assessed via dynamometry during maximum voluntary contractions, and gastrocnemius voluntary activation (GVA) via surface electromyography. …

The Efficacy Of Colchicine In Preventing Atrial Fibrillation Recurrence And Pericarditis Post-Catheter Ablation For Atrial Fibrillation – A Systematic Review And Meta-Analysis Of Prospective Studies, Vamsikalayan Borra, Arankesh Mahadevan, Sidhartha Gautam Senapati, Roopeessh Vempati, Vikash Jaiswal, Nithya Borra, Javaria Ahmad, Oscar Rodrigo Zamudio Herrera, Carlos Vergara Sanchez, Tanisha Prasad

School of Medicine Publications

Highlights

• Recurrent AF after CA occurred in 29.0% of the colchicine group and 39.5% of the placebo group.

• Post-ablation pericarditis occurred in 5.3 % of the colchicine group and 16.5% of the placebo group.

• Pooled analysis of prospective studies showed that colchicine decreased the odds of recurrent AF [OR: 0.63 (95 % CI: 0.50–0.78), p < 0.01, I2 = 8 %] and post-ablation pericarditis [OR: 0.34 (95 % CI: 0.16–0.75), p < 0.01, I2 = 57 %].

Introduction

Catheter ablation (CA) initiates a proinflammatory process responsible for atrial fibrillation (AF) recurrence (25–40%) and pericarditis (0.8%). Due to its anti-inflammatory properties, colchicine, a microtubule inhibitor, …

The Internist's Post V.1 N.6, The University Of Texas Rio Grande Valley. School Of Medicine, Eunbee Cho, Jian Garcia Cruz, Ramon Elizondo Romo, Roque Mifuji Lira, Martha Solis, Cesar Gutierrez, Diana Othon Martinez

School of Medicine Publications

No abstract provided.

Assessing The State Of Obesity Care: Quality, Access, Guidelines, And Standards, Lee M Kaplan, Caroline M Apovian, Jamy D Ard, David B Allison, Louis J Aronne, Rachel L Batterham, Luca Busetto, Dror Dicker, Deborah B Horn, Aaron S Kelly, Jeffrey I Mechanick, Jonathan Q Purnell, Ximena Ramos-Salas, Assessing The State Of Obesity Care Writing Group

Faculty, Staff and Student Publications

BACKGROUND: An international panel of obesity medicine experts from multiple professional organizations examined patterns of obesity care and current obesity treatment guidelines to identify areas requiring updating in response to emerging science and clinical evidence.

AIMS: The panel focused on multiple medical health and societal issues influencing effective treatment of obesity and identified several unmet needs in the definition, assessment, and care of obesity.

METHODS: The panel was held in Leesburg, Virginia in September 2019.

RESULTS: The panelists recommended addressing these unmet needs in obesity medicine through research, education, evaluation of delivery and payment of care, and updating clinical practice …

Epilepsy Prevalence Studies And The Lingering Treatment Gap In Africa, Dilraj Sokhi, Pauline Samia

Internal Medicine, East Africa

No abstract provided.

A Case For Increasing Taxes On Cigarettes, Vapes And Oral Nicotine Pouches, Ken, Cyprian Mostert, Olalekan Ayo-Yusuf, Manasi Kumar, Andrew Aballa, Willie Njoroge, Edna Bosire, Linda Khakali, John Thomi, Lukoye Atwoli, Zul Merali

Population Health, East Africa

No abstract provided.

Association Between Intravenous Fluids During Labor And Primary Postpartum Hemorrhage: A Retrospective Cohort Study, Belinda R Bruce, Heather L Shepherd, Saleem Ahmed Khan, Charlotte R Haunton, Julie Leask, Bradley S De Vries

Faculty, Staff and Student Publications

INTRODUCTION: There is a major research gap relating to the impact of intravenous (IV) fluids administration during labor on maternal and neonatal outcomes. It is biologically plausible that a relationship between volume of IV fluids and primary postpartum hemorrhage (PPH) exists. The primary objective of this study was to evaluate whether the administration of high-volume IV fluids during labor (≥ 2500 mL) increases the risk of primary PPH and other adverse outcomes for women with a term, singleton pregnancy, in comparison to low-volume IV fluids during labor (<2500 >mL).

MATERIAL AND METHODS: A retrospective cohort study was conducted at a …

Vertebrate And Invertebrate Animal Infection Models Of Candida Auris Pathogenicity, Melissa Martinez, Danielle A Garsin, Michael C Lorenz

Faculty, Staff and Student Publications

Candida auris is an emerging fungal pathogen with several concerning qualities. First recognized in 2009, it has arisen in multiple geographically distinct genomic clades nearly simultaneously. C. auris strains are typically multidrug resistant and colonize the skin much better than most other pathogenic fungi; it also persists on abiotic surfaces, enabling outbreaks due to transmission in health care facilities. All these suggest a biology substantially different from the 'model' fungal pathogen, Candida albicans and support intensive investigation of C. auris biology directly. To uncover novel virulence mechanisms in this species requires the development of appropriate animal infection models. Various studies …

Effect Of Semaglutide On Regression And Progression Of Glycemia In People With Overweight Or Obesity But Without Diabetes In The Select Trial, Steven E Kahn, John E Deanfield, Ole Kleist Jeppesen, Scott S Emerson, Trine Welløv Boesgaard, Helen M Colhoun, Robert F Kushner, Ildiko Lingvay, Bartolome Burguera, Grzegorz Gajos, Deborah Bade Horn, Irene M Hramiak, Ania M Jastreboff, Alexander Kokkinos, Michael Maeng, Ana Laura S A Matos, Francisco J Tinahones, A Michael Lincoff, Donna H Ryan, Select Trial Investigators

Faculty, Staff and Student Publications

OBJECTIVE: To determine whether semaglutide slows progression of glycemia in people with cardiovascular disease and overweight or obesity but without diabetes.

RESEARCH DESIGN AND METHODS: In a multicenter, double-blind trial, participants aged ≥45 years, with BMI ≥27 kg/m2, and with preexisting cardiovascular disease but without diabetes (HbA1c

RESULTS: Of 17,604 participants, 8,803 were assigned to semaglutide and 8,801 to placebo. Mean ± SD intervention exposure was 152 ± 56 weeks and follow-up 176 ± 40 weeks. In both treatment arms mean nadir HbA1c for participants was at 20 weeks. Thereafter, HbA1c increased similarly in both arms, with a mean difference …

Human Platelet Lysate Enhances In Vivo Activity Of Car-Vδ2 T Cells By Reducing Cellular Senescence And Apoptosis, Feiyan Mo, Chiou-Tsun Tsai, Rong Zheng, Chonghui Cheng, Helen E Heslop, Malcolm K Brenner, Maksim Mamonkin, Norihiro Watanabe

Faculty, Staff and Students Publications

BACKGROUND AIMS: Vγ9Vδ2 T cells are an attractive cell platform for the off-the-shelf cancer immunotherapy as the result of their lack of alloreactivity and inherent multi-pronged cytotoxicity, which could be further amplified with chimeric antigen receptors (CARs). In this study, we sought to enhance the in vivo longevity of CAR-Vδ2 T cells by modulating ex vivo manufacturing conditions and selecting an optimal CAR costimulatory domain.

METHODS: Specifically, we compared the anti-tumor activity of Vδ2 T cells expressing anti-CD19 CARs with costimulatory endodomains derived from CD28, 4-1BB or CD27 and generated in either standard fetal bovine serum (FBS)- or human platelet …

Cognitive Behavioral Therapy Factors Related To Outcomes In Depression Among Youth With Hiv, Betsy D Kennard, Larry K Brown, Kristin Baltrusaitis, Miriam Chernoff, Graham J Emslie, Jessica Jones, Sarah Buisson, Jaime Deville, Megan Wilkins, Amber Bunch, Chivon Mcmullen Jackson, Christy Beneri, David E Shapiro

Faculty, Staff and Students Publications

PURPOSE: This is a secondary analysis of a multi-site, cluster (site) randomized trial of the efficacy of a combined Health and Wellness Cognitive Behavior Therapy (H&W CBT) and medication management approach for depression in youth with HIV (YWH) compared to standard care. In this study, we explored the association between H&W CBT factors and depression outcomes after 24 weeks of treatment to discover treatment elements associated with symptom reduction.

METHODS: Participants (12-24 years of age) were YWH in the United States (US) diagnosed with moderate to severe depression [Quick Inventory of Depressive Symptomatology (QIDS), Clinician-Rated score ≥ 11]. Thirteen US …

Practice For Real Life: Diversifying Cases In Educational Conferences, Erin H Yang, Zaven Sargsyan, Stephanie V Sherman, Prathit A Kulkarni

Faculty, Staff and Students Publications

No abstract provided.

A Case Of Herpes Zoster In An Immunocompetent 19-Year-Old Female, Martin Nguyen, Jennifer Read, Emma Filary, Aaron Mcguffin

Marshall Journal of Medicine

This case report describes the unusual presentation of herpes zoster in a fully vaccinated teenage patient and highlights management considerations. The patient is a 19-year-old female who presented with pain in her left lower back, side, and upper thigh for approximately 3 days, which was then followed by the eruption of a vesicular rash along the L2 dermatome consistent with herpes zoster. Herpes zoster is predominantly observed only in elderly and immunocompromised individuals, primarily due to the widespread use of the varicella-zoster virus vaccine for children since 1995, when it became part of the routine immunization schedule. However, this case …

Iron And Cardiovascular Health: A Review, Diana Othon, Osiris Fernandez, Barbara Malaga-Espinoza, Maria E. Torres, Everardo Cobos, Cesar Gutierrez

School of Medicine Publications

Iron is an essential element for the biological processes of living organisms, including the production of crucial oxygen-carrying proteins, formation of heme enzymes, and playing roles in electron transfer and oxidation–reduction reactions. It plays a significant role in various cardiovascular functions, including bioenergetics, electrical activity, and programmed cell death. Minor deficiencies of iron have been found to have negative impact on cardiovascular function in patients with heart failure (HF). The contractility of human cardiomyocytes is impaired by iron deficiency (ID), which results in reduced mitochondrial function and lower energy production, ultimately leading to cardiac function impairment, contributing to significant morbidity …

The Significant Role Of Amino Acid Metabolic Reprogramming In Cancer, Xiaohong Liu, Bo Ren, Jie Ren, Minzhi Gu, Lei You, Yupei Zhao

Faculty, Staff and Student Publications

Amino acid metabolism plays a pivotal role in tumor microenvironment, influencing various aspects of cancer progression. The metabolic reprogramming of amino acids in tumor cells is intricately linked to protein synthesis, nucleotide synthesis, modulation of signaling pathways, regulation of tumor cell metabolism, maintenance of oxidative stress homeostasis, and epigenetic modifications. Furthermore, the dysregulation of amino acid metabolism also impacts tumor microenvironment and tumor immunity. Amino acids can act as signaling molecules that modulate immune cell function and immune tolerance within the tumor microenvironment, reshaping the anti-tumor immune response and promoting immune evasion by cancer cells. Moreover, amino acid metabolism can …

The Association Between Prolonged Sars-Cov-2 Symptoms And Work Outcomes, Arjun K Venkatesh, Huihui Yu, Caitlin Malicki, Michael Gottlieb, Joann G Elmore, Mandy J Hill, Ahamed H Idris, Juan Carlos C Montoy, Kelli N O'Laughlin, Kristin L. Rising, Kari A Stephens, Erica S Spatz, Robert A Weinstein

Department of Emergency Medicine Faculty Papers

While the early effects of the COVID-19 pandemic on the United States labor market are well-established, less is known about the long-term impact of SARS-CoV-2 infection and Long COVID on employment. To address this gap, we analyzed self-reported data from a prospective, national cohort study to estimate the effects of SARS-CoV-2 symptoms at three months post-infection on missed workdays and return to work. The analysis included 2,939 adults in the Innovative Support for Patients with SARS-CoV-2 Infections Registry (INSPIRE) study who tested positive for their initial SARS-CoV-2 infection at the time of enrollment, were employed before the pandemic, and completed …

Differential Impact Of Serotonin Signaling Methylphenidate On Young Versus Adult: Insights From Behavioral And Dorsal Raphe Nucleus Neuronal Recordings From Freely Behaving Rats, Nachum Dafny, Gloria M Elizondo, Cruz Perez-Vasquez

Faculty, Staff and Student Publications

Methylphenidate (MPD) remains a cornerstone pharmacological intervention for managing ADHD, yet its increasing usage among ordinary youth and adults outside clinical contexts necessitates a thorough investigation into its developmental effects. This study seeks to simultaneously investigate the behavioral and neuronal changes within the dorsal raphe (DR) nucleus, a center of serotonergic neurons in the mammalian brain, before and after the administration of varying doses of acute and chronic MPD in freely behaving young and adult rats implanted with DR recording electrodes. Wireless neuronal and behavioral recording systems were used over 10 consecutive experimental days. Eight groups were examined: saline, 0.6, …

Refining The Optimal Caf Cluster Marker For Predicting Tme-Dependent Survival Expectancy And Treatment Benefits In Nsclc Patients, Kai Li, Rui Wang, Guo Wei Liu, Zi Yang Peng, Ji Chang Wang, Guo Dong Xiao, Shou Ching Tang, Ning Du, Jia Zhang, Jing Zhang, Hong Ren, Xin Sun, Yi Ping Yang, Da Peng Liu

School of Medicine Faculty Publications

The tumor microenvironment (TME) plays a pivotal role in the onset, progression, and treatment response of cancer. Among the various components of the TME, cancer-associated fibroblasts (CAFs) are key regulators of both immune and non-immune cellular functions. Leveraging single-cell RNA sequencing (scRNA) data, we have uncovered previously hidden and promising roles within this specific CAF subgroup, paving the way for its clinical application. However, several critical questions persist, primarily stemming from the heterogeneous nature of CAFs and the use of different fibroblast markers in various sample analyses, causing confusion and hindrance in their clinical implementation. In this groundbreaking study, we …

Development And Implementation Of A Digital Quality Measure Of Emergency Cancer Diagnosis, Paarth Kapadia, Andrew J Zimolzak, Divvy K Upadhyay, Saritha Korukonda, Riyaa Murugaesh Rekha, Umair Mushtaq, Usman Mir, Daniel R Murphy, Alexis Offner, Gary A Abel, Georgios Lyratzopoulos, Luke T A Mounce, Hardeep Singh

Faculty, Staff and Students Publications

PURPOSE: Missed and delayed cancer diagnoses are common, harmful, and often preventable. Automated measures of quality of cancer diagnosis are lacking but could identify gaps and guide interventions. We developed and implemented a digital quality measure (dQM) of cancer emergency presentation (EP) using electronic health record databases of two health systems and characterized the measure's association with missed opportunities for diagnosis (MODs) and mortality.

METHODS: On the basis of literature and expert input, we defined EP as a new cancer diagnosis within 30 days after emergency department or inpatient visit. We identified EPs for lung cancer and colorectal cancer (CRC) …

Implementation Of Home Blood Pressure Monitoring, Sarah Gutzke

Dissertations

Approximately 48.1% of adults in the United States have high blood pressure. Providers may encourage patients to monitor and log their blood pressure at home. Still, patients often fail to bring this information to appointments, leading to reliance on less comprehensive in-office measurements. This quality improvement project aimed to increase adherence to home blood pressure logs using a Blood Pressure Toolkit. A descriptive, observational design was utilized to record patient adherence of taking home blood pressure measurements and increase the number of patients who brought their blood pressure logs to their healthcare provider visits over two months. A convenience sample …

Luspatercept Enhances Hemoglobin Levels In A Chinese Boy With Congenital Sideroblastic Anemia: A Case Report, Yuan Li, Lei Ye, Kang Zhou, Hui-Hui Fan, Jian-Ping Li, You-Zhen Xiong, Yang Yang, Guang-Xin Peng, Wen-Rui Yang, Xin Zhao, Li-Ping Jing, Li Zhang, Feng-Kui Zhang

Faculty, Staff and Student Publications

BACKGROUND: Congenital sideroblastic anemia (CSA) is a rare and heterogeneous group of genetic disorders. Conventional treatment include pyridoxine (vitamin B6) and allogeneic hematopoietic stem cell transplantation (allo-HSCT), and can alleviate anemia in the majority of cases. Nevertheless, some CSA cases remain unresponsive to pyridoxine or are unable to undergo allo-HSCT. Novel management approaches is necessary to be developed. To explore the response of luspatercept in treating congenital sideroblastic anemia.

CASE SUMMARY: We share our experience in luspatercept in a 4-year-old male patient with CSA. Luspatercept was administered subcutaneously at doses of 1.0 mg/kg/dose to 1.25 mg/kg/dose every 3 wk, three …

What Constitutes Adequate Control Of High Blood Pressure? Current Considerations, Donald E. Casey, Alexander J. Blood, Stephen D. Persell, Daniel Pohlman, Jeff D. Williamson

College of Population Health Faculty Papers

An estimated 45% of adult Americans currently have high blood pressure (HBP). Effective blood pressure (BP) control is essential for preventing major adverse events from cardiovascular and other vascular-related diseases, such as chronic kidney disease, stroke and dementia. A large and growing number of medical professional societies, health care organizations, and governmental agencies have now endorsed a clinical practice guideline-based target for adequate control of HBP to a systolic BP of less than 130 mm Hg. However, adequate BP control to this goal has been recently estimated to be as low as 30%. The first and most important steps to …

Hur Controls Glutaminase Rna Metabolism, Douglas Adamoski, Larissa M Dos Reis, Ana Carolina Paschoalini Mafra, Felipe Corrêa-Da-Silva, Pedro Manoel Mendes De Moraes-Vieira, Ioana Berindan-Neagoe, George A Calin, Sandra Martha Gomes Dias

Faculty, Staff and Student Publications

Glutaminase (GLS) is directly related to cell growth and tumor progression, making it a target for cancer treatment. The RNA-binding protein HuR (encoded by the ELAVL1 gene) influences mRNA stability and alternative splicing. Overexpression of ELAVL1 is common in several cancers, including breast cancer. Here we show that HuR regulates GLS mRNA alternative splicing and isoform translation/stability in breast cancer. Elevated ELAVL1 expression correlates with high levels of the glutaminase isoforms C (GAC) and kidney-type (KGA), which are associated with poor patient prognosis. Knocking down ELAVL1 reduces KGA and increases GAC levels, enhances glutamine anaplerosis into the TCA cycle, and …