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Full-Text Articles in Physiology

Redeployment Of Athletic Trainers During A Pandemic, James Caiola Jan 2021

Redeployment Of Athletic Trainers During A Pandemic, James Caiola

Clinical Practice in Athletic Training

Before COVID-19 was recognized as a global pandemic involving the United States of America in March of 2020, MedStar Health employed 40 Athletic Trainers (ATs) in multiple settings. While ATs worked in the traditional setting at 17 high schools, 2 universities, and with 2 professional teams in the Baltimore, MD and Washington, DC area, they also have been used in nontraditional ways. They are used in the physician practice setting to manage clinic flow, evaluate patients and present to the physician, provide pre- and post-surgical patient education, and being an overall patient point of contact in a busy clinic. They …


Intersectionality: The Role Of The Athletic Trainer In Providing Culturally Competent Patient-Centered Care, Rebecca M. Lopez, Samar Long, Dani M. Moffit, Ashley K. Crossway Jan 2021

Intersectionality: The Role Of The Athletic Trainer In Providing Culturally Competent Patient-Centered Care, Rebecca M. Lopez, Samar Long, Dani M. Moffit, Ashley K. Crossway

Clinical Practice in Athletic Training

No abstract provided.


Bi-Lateral Hand Compartment Syndrome Secondary To Autoimmune Disorder In A Former High School Multi-Sport Athlete, Alyssa Vaniman Jan 2021

Bi-Lateral Hand Compartment Syndrome Secondary To Autoimmune Disorder In A Former High School Multi-Sport Athlete, Alyssa Vaniman

Clinical Practice in Athletic Training

Patient is a 21-year-old female former multiple-sport athlete who has suffered from the development of multiple cases of compartment syndrome throughout their body. At the time the medical staff encountered the patient, they were diagnosed with bilateral hand compartment syndrome. An autoimmune disorder known as Scleromyositis was diagnosed as the source of the multiple diagnosed cases of compartment syndrome. Prior to surgical intervention, the patient was unable to complete everyday tasks as a student. As pressure within their hypothenar, thenar, and interosseous compartments grew, the patient was no longer able to complete everyday fine motor skill tasks. A post-surgical rehabilitation …


Telehealth Optimization – Role Of Clinical Athletic Trainers In Orthopedic/Sports Medicine Practice, Katie Harbacheck, Laura Grambo, Shaun Keefer, Eric Klein, Christine Boyd, Carolyn Ford-Hemann, Cameron D’Alpe, Steve Frick, Kevin Shea Jan 2021

Telehealth Optimization – Role Of Clinical Athletic Trainers In Orthopedic/Sports Medicine Practice, Katie Harbacheck, Laura Grambo, Shaun Keefer, Eric Klein, Christine Boyd, Carolyn Ford-Hemann, Cameron D’Alpe, Steve Frick, Kevin Shea

Clinical Practice in Athletic Training

Background: Prior to COVID-19, telehealth (TH) implementation in most health systems was minimal. The transition to high rates of TH was dramatic in response to COVID-19, and many health systems struggled to develop optimal, efficient TH workflows. Hypothesis/Purpose: The primary purpose of this study was to evaluate the role of clinically integrated athletic trainers (ATs) into the TH transition of a major orthopedic academic center through growth of TH visits as well as physician satisfaction. Methods: Workflows and tip sheets were designed to include considerations of TH visit increases, adoption of appropriate technology platforms and optimal staff models. The rapid …


Impact Of Physical Activity And Cardiorespiratory Fitness On Vascular Homeostasis In Premenopausal Women Consuming A Westernized High-Fat Meal, Lauren N. Pedersen Jan 2021

Impact Of Physical Activity And Cardiorespiratory Fitness On Vascular Homeostasis In Premenopausal Women Consuming A Westernized High-Fat Meal, Lauren N. Pedersen

Theses and Dissertations

A large percentage of adults in industrialized nations consume a Westernized dietary pattern, which contributes to fasting dyslipidemia and increased risk for atherosclerotic cardiovascular disease. Evidence suggests that a single Westernized meal containing high saturated fat may induce alterations in blood lipids as well as disturb multiple factors regulating peripheral vascular homeostasis, including innate immune cell function, oxidative stress, and vascular function. Conversely, participation in acute and chronic exercise may beneficially impact an individual’s postprandial response. Therefore, this dissertation contains three manuscripts seeking to describe how acute exercise, cardiorespiratory fitness, and physical activity level impact the lipemic and vascular homeostatic …


Mechanisms And Therapeutic Interventions For Breast Cancer-Induced Fatigue And Mitochondrial Dysfunction, David Andrew Stanton Jan 2021

Mechanisms And Therapeutic Interventions For Breast Cancer-Induced Fatigue And Mitochondrial Dysfunction, David Andrew Stanton

Graduate Theses, Dissertations, and Problem Reports (ETD)

According to the latest statistics from the National Cancer Institute (NCI), about 1 in 8 U.S. women (~13%) will develop invasive breast cancer over the course of their lifetime. This translates to an estimated 268,600 new cases of breast cancer for the year 2019, and these diagnoses will collectively make up 15% of all new cancer cases across all cancer types. The majority of these women will experience the often-debilitating symptom of breast cancer-induced fatigue. these patients often have difficulty performing normal activities of daily living, have decreased tolerance to traditional tumor-directed therapies, and have higher rates of cancer recurrence. …


Short-Term Fasting And Autonomic Control, Joshua Gonzalez Jan 2021

Short-Term Fasting And Autonomic Control, Joshua Gonzalez

Dissertations, Master's Theses and Master's Reports

Obesity is a chronic metabolic disorder associated with increased risk of cardiovascular disease. Evidence suggests that chronic intermittent fasting improves cardiometabolic health and reduces arterial blood pressure. However, the mechanisms underlying the reductions in blood pressure and improved cardiovascular health observed from chronic fasting studies remain unclear. The autonomic nervous system has a central role in the regulation of blood pressure and is essential for cardiovascular homeostasis. We conducted a study to investigate how acute fasting influences autonomic control of blood pressure at rest and during stress. Twenty-five young, healthy, normal weight, normotensive participants were tested twice, once in the …


When Working Out Makes You Sick To Your Stomach: What To Know About Exercise-Induced Nausea, Anne R. Crecelius Dec 2020

When Working Out Makes You Sick To Your Stomach: What To Know About Exercise-Induced Nausea, Anne R. Crecelius

Health and Sport Science Faculty Publications

You’re doing it! You’re working out, reaping all those benefits of exercise that have been drilled into your head.

So you’re pedaling your heart out or running like you’re escaping a zombie horde. You’re feeling accomplished, on cloud nine, until … your stomach starts to churn. You may even feel dizzy. Your feelings of accomplishment have turned to agony as you deal with a bout of nausea.

Exercise-induced nausea is quite common, as are exercise-induced gastrointestinal (GI) problems in general, affecting perhaps up to 90% of endurance athletes.

So why does this happen and, more important, how can you prevent …


The Crossroads Of Wellness And Second Victim Syndrome: Identifying Factors That Alter The Pathway Of Caregiver Recovery Following An Unanticipated Adverse Patient Outcome, Kimia Zarabian, A. Katharine Hindle, Ivy Benjenk, Anita Vincent, Jamil M. Kazma, Benjamin Shambon, Raymond Pla, Eric Heinz Dec 2020

The Crossroads Of Wellness And Second Victim Syndrome: Identifying Factors That Alter The Pathway Of Caregiver Recovery Following An Unanticipated Adverse Patient Outcome, Kimia Zarabian, A. Katharine Hindle, Ivy Benjenk, Anita Vincent, Jamil M. Kazma, Benjamin Shambon, Raymond Pla, Eric Heinz

Journal of Wellness

Introduction: Second Victim Syndrome (SVS) describes the phenomenon in which a caregiver experiences a traumatic psychological and emotional response to an adverse patient event or medical error. Using quantitative survey analysis, we aim to better understand the personal factors that affect SVS development and recovery.

Methods: Caregivers at a small urban academic medical center who had experienced an adverse patient event in the past six months were invited to take part in this institution-wide, voluntary, quantitative, cross-sectional study. Three surveys were administered; the Holmes-Rahe Life Stress Inventory (HRLSI) was used as a surrogate to measure stressful life events. The …


Efficacy Of Pulmonary Ultrasound Compared To N-Terminal Prohormone Brain Natriuretic Peptide As A Diagnostic Tool For Congestive Heart Failure In Patients Presenting With Acute Dyspnea In The Emergency Setting, Leah Krohn, Michael Burns Dec 2020

Efficacy Of Pulmonary Ultrasound Compared To N-Terminal Prohormone Brain Natriuretic Peptide As A Diagnostic Tool For Congestive Heart Failure In Patients Presenting With Acute Dyspnea In The Emergency Setting, Leah Krohn, Michael Burns

Physician Assistant Capstones, 2020-current

Objective: To determine the efficacy of using pulmonary ultrasound as a diagnostic tool in acute dyspnea of undetermined cause compared to the use of serum N-Terminal prohormone Brain Natriuretic Peptide (NT-proBNP) in the diagnosis of heart failure.

Design: Systematic literature review

Methods: Searches were conducted in PubMed and Scopus using the terms pulmonary ultrasound and congestive heart failure and studies within the last 10 years. Studies that used pulmonary ultrasound compared to BNP as a marker for the diagnosis of heart failure were included.

Results: All three studies found that the use of pulmonary ultrasound was a more specific …


Prenatal Alcohol Exposure Alters Transcriptional Expression Of Stress And Tlr4-Related Immune Signaling Factors In The Brain Following Early Life Stress, Chaselyn D. Ruffaner-Hanson Dec 2020

Prenatal Alcohol Exposure Alters Transcriptional Expression Of Stress And Tlr4-Related Immune Signaling Factors In The Brain Following Early Life Stress, Chaselyn D. Ruffaner-Hanson

Biomedical Sciences ETDs

Background: Depression and anxiety disorders, believed to be caused by stress-related neuropeptides and pro-inflammatory molecules in the brain, are prevalent comorbidities of fetal alcohol spectrum disorders (FASD).

Methods: Brain tissue was collected following a 4-hour maternal separation stress during the early postnatal period, postnatal days 10 and 12, from mice subjected to 1st and 2nd trimester prenatal alcohol exposure (PAE).

Hypothesis: We hypothesized that PAE leads to glucocorticoid receptor insensitivity, stress molecule overexpression, and potentiated toll-like receptor 4 (TLR4) pathway inflammatory responses in the brain following early life stress.

Results: PAE and stress increased mRNA expression of TLR4 …


A Change At The Park: Muscular Dystrophy-Duchenne, Pranav Manoj, Amber Bautista, Bridget Bunt Dec 2020

A Change At The Park: Muscular Dystrophy-Duchenne, Pranav Manoj, Amber Bautista, Bridget Bunt

Human Diseases Graphic Novels

No abstract provided.


Asthma, Rachel Hodge, Brenna Christoffel Dec 2020

Asthma, Rachel Hodge, Brenna Christoffel

Human Diseases Graphic Novels

No abstract provided.


Addison's Disease And Parkinson's Disease, Jade Bates, Minju Oh, Megan Ptak Dec 2020

Addison's Disease And Parkinson's Disease, Jade Bates, Minju Oh, Megan Ptak

Human Diseases Graphic Novels

No abstract provided.


Patho Graphic Novels: Epilepsy, Lily Isibue, Melissa Myint, Laila Walton Dec 2020

Patho Graphic Novels: Epilepsy, Lily Isibue, Melissa Myint, Laila Walton

Human Diseases Graphic Novels

No abstract provided.


Lung Cancer, Ahana Narayanan, Maia Peregrino, Moorea Gay Dec 2020

Lung Cancer, Ahana Narayanan, Maia Peregrino, Moorea Gay

Human Diseases Graphic Novels

No abstract provided.


Celiac Disease, Maia Peregrino, Ahana Narayanan, Moorea Gay Dec 2020

Celiac Disease, Maia Peregrino, Ahana Narayanan, Moorea Gay

Human Diseases Graphic Novels

No abstract provided.


Nervous System: Alzheimer’S Disease, Krisha Patel, Saachi Kumar, Delicia Chen Dec 2020

Nervous System: Alzheimer’S Disease, Krisha Patel, Saachi Kumar, Delicia Chen

Human Diseases Graphic Novels

No abstract provided.


The 2019 P-Mig Student Survey Report And Capturing The Undergraduate Perspective Of Physiology Programming, Jennifer Rogers, Jenny L. Mcfarland, Claudia I. Stanescu, Patrick L. Crosswhite, Anne R. Crecelius Dec 2020

The 2019 P-Mig Student Survey Report And Capturing The Undergraduate Perspective Of Physiology Programming, Jennifer Rogers, Jenny L. Mcfarland, Claudia I. Stanescu, Patrick L. Crosswhite, Anne R. Crecelius

Health and Sport Science Faculty Publications

The aim of the 2019 Student Survey was to inform the Physiology Majors Interest Group (PMIG) of characteristics of undergraduates enrolled in physiology courses or degree programs from across the United States, to be used as one input source for development of program-level guidelines. 1389 participants from seven universities completed the 2019 P-MIG Student Survey. 37% reported enrollment in a physiology/human physiology major; allied health related programs were the second most common (24%). 61% of respondents reported attending a community college, the majority of whom enrolled in one or more courses at a community college while in high school (44%). …


Biomechanical Properties Of Land Based And Shallow Water Wait: A Comparative Review Of Literature, Mostafa Yaghoubi, Philip Fink, Wyatt H. Page, Sarah P. Shultz Dec 2020

Biomechanical Properties Of Land Based And Shallow Water Wait: A Comparative Review Of Literature, Mostafa Yaghoubi, Philip Fink, Wyatt H. Page, Sarah P. Shultz

International Journal of Aquatic Research and Education

Aquatic locomotion exercises are frequently used in rehabilitation and cross-training for land-based athletes. Hydrostatic pressure, thermal conductivity and drag force affect a person's ability to move; therefore, it is important to understand differences of biomechanical gait in water vs land. This review investigated biomechanical differences between shallow water and land-based exercises. PubMed, Google Scholar, SPORTDiscus and Scopus were searched; 33 studies included walking forward (27), backward (6) and running (6). Electromyographic amplitude was similar or less in submaximal intensity during aquatic gait, in comparison to on land. At maximal intensities, however, the amplitude was similar (n=5) or higher (n=4) in …


A Functional Three-Dimensional Microphysiological Model Of Myeloma Bone Disease, Richard Visconti Dec 2020

A Functional Three-Dimensional Microphysiological Model Of Myeloma Bone Disease, Richard Visconti

Seton Hall University Dissertations and Theses (ETDs)

Multiple myeloma (MM) is a hematologic cancer caused by a mature B cell neoplasm, or plasmacytoma, that infiltrates the skeleton at several sites. The disease is characterized by uninhibited transformed plasma cell proliferation that disrupts skeletal homeostasis leading to decreased bone modeling and increased bone resorption. Osteolytic lesions (OL) or voids left in the bone, remain long after the treatment of the cancer and indicate disease progression to myeloma bone disease (MBD). Current combinatorial MM therapies inhibit malignant plasma cell proliferation, slow the progression towards MBD, and increase the mean five-year survival rate, but do little to improve osteoblastic function …


Sexually Dimorphic Oxytocin Receptor-Expressing Neurons In The Anteroventral Periventricular Nucleus Regulates Maternal Behavior, Kaustubh Sharma Nov 2020

Sexually Dimorphic Oxytocin Receptor-Expressing Neurons In The Anteroventral Periventricular Nucleus Regulates Maternal Behavior, Kaustubh Sharma

LSU Doctoral Dissertations

The neurohypophysial hormone oxytocin is involved in the regulation of social behaviors, including social recognition, pair bonding, and sex-specific parental behaviors in a variety of species. Oxytocin triggers these social behaviors by binding to oxytocin receptors (OXTR) in various parts of the brain. Oxytocin-induced sex-typical behavior, therefore, suggests a sexual dimorphic distribution of OXTR in the brain. In recent years, the oxytocin system in the brain received tremendous attention as a potential pharmacological target for treatment of many psychiatric disorders, such as anxiety, autism spectrum disorders, and even sex-specific psychiatric disorder like postpartum depression (PPD). An important problem and a …


Ceramide Analog [18F]F-Hpa-12 Detects Sphingolipid Disbalance In The Brain Of Alzheimer’S Disease Transgenic Mice By Functioning As A Metabolic Probe, Simone M. Crivelli, Daan Van Kruining, Qian Luo, Jo A. A. Stevens, Caterina Giovagnoni, Andreas Paulus, Matthias Bauwens, Dusan Berkes, Helga E. De Vries, Monique T. Mulder, Jochen Walter, Etienne Waelkens, Rita Derua, Johannes V. Swinnen, Jonas Dehairs, Felix M. Mottaghy, Mario Losen, Erhard Bieberich, Pilar Martinez-Martinez Nov 2020

Ceramide Analog [18F]F-Hpa-12 Detects Sphingolipid Disbalance In The Brain Of Alzheimer’S Disease Transgenic Mice By Functioning As A Metabolic Probe, Simone M. Crivelli, Daan Van Kruining, Qian Luo, Jo A. A. Stevens, Caterina Giovagnoni, Andreas Paulus, Matthias Bauwens, Dusan Berkes, Helga E. De Vries, Monique T. Mulder, Jochen Walter, Etienne Waelkens, Rita Derua, Johannes V. Swinnen, Jonas Dehairs, Felix M. Mottaghy, Mario Losen, Erhard Bieberich, Pilar Martinez-Martinez

Physiology Faculty Publications

The metabolism of ceramides is deregulated in the brain of Alzheimer’s disease (AD) patients and is associated with apolipoprotein (APO) APOE4 and amyloid-β pathology. However, how the ceramide metabolism changes over time in AD, in vivo, remains unknown. Distribution and metabolism of [18F]F-HPA-12, a radio-fluorinated version of the ceramide analog N-(3-hydroxy-1-hydroxymethyl-3-phenylpropyl) dodecanamide, was investigated in the brain of AD transgenic mouse models (FAD) on an APOE4 or APOE3 genetic background, by positron emission tomography and by gamma counter. We found that FAD mice displayed a higher uptake of [18F]F-HPA-12 in the brain, independently from the APOE4 …


Heavy Is The Head That Wears The Crown: Black Men’S Perspective On Harmful Effects Of Hair Product Use And Breast Cancer Risk, Dede K. Teteh, Marissa Chan, Bing Turner, Brian Hedgeman, Marissa Ericson, Phyllis Clark, Eudora Mitchell, Emily Barrett, Adana Llanos, Rick Kittles, Susanne Montgomery Nov 2020

Heavy Is The Head That Wears The Crown: Black Men’S Perspective On Harmful Effects Of Hair Product Use And Breast Cancer Risk, Dede K. Teteh, Marissa Chan, Bing Turner, Brian Hedgeman, Marissa Ericson, Phyllis Clark, Eudora Mitchell, Emily Barrett, Adana Llanos, Rick Kittles, Susanne Montgomery

Health Sciences and Kinesiology Faculty Articles

Racial disparities in breast cancer are well-documented, and Black women assume a disproportionate burden of breast cancer mortality. Black women also commonly use hair products containing endocrine disrupting chemicals (EDCs) more often at an increased rate, as compared to other racial/ethnic groups. Emerging findings have reported the use of hair and other personal care products containing EDCs may contribute to breast cancer risk. While some sociocultural perspectives about hair and identity have been explored, the role of beauty expectations upheld by males has not been studied. Through a community-based participatory methodology, we explored perceptions and beliefs held by Black men …


Neutrophil Signaling During Myocardial Infarction Wound Repair, Michael J. Daseke, Upendra Chalise, Mediha Becirovic-Agic, Jeffrey D. Salomon, Leah M. Cook, Adam J. Case, Merry L. Lindsey Oct 2020

Neutrophil Signaling During Myocardial Infarction Wound Repair, Michael J. Daseke, Upendra Chalise, Mediha Becirovic-Agic, Jeffrey D. Salomon, Leah M. Cook, Adam J. Case, Merry L. Lindsey

Journal Articles: Cellular & Integrative Physiology

Neutrophils are key effector cells of the innate immune system, serving as a first line of defense in the response to injury and playing essential roles in the wound healing process. Following myocardial infarction (MI), neutrophils infiltrate into the infarct region to propagate inflammation and begin the initial phase of cardiac wound repair. Pro-inflammatory neutrophils release proteases to degrade extracellular matrix (ECM), a necessary step for the removal of necrotic myocytes as a prelude for scar formation. Neutrophils transition their phenotype over time to regulate MI inflammation resolution and stabilize scar formation. Neutrophils contribute to the evolution from inflammation to …


Efficient Cocaine Degradation By Cocaine Esterase-Loaded Red Blood Cells, Luigia Rossi, Francesca Pierigè, Marco Agostini, Noemi Bigini, Veronica Termopoli, Yingting Cai, Fang Zheng, Chang-Guo Zhan, Donald W. Landry, Mauro Magnani Sep 2020

Efficient Cocaine Degradation By Cocaine Esterase-Loaded Red Blood Cells, Luigia Rossi, Francesca Pierigè, Marco Agostini, Noemi Bigini, Veronica Termopoli, Yingting Cai, Fang Zheng, Chang-Guo Zhan, Donald W. Landry, Mauro Magnani

Molecular Modeling and Biopharmaceutical Center Faculty Publications

Recombinant bacterial cocaine esterase (CocE) represents a potential protein therapeutic for cocaine use disorder treatment. Unfortunately, the native enzyme was highly unstable and the corresponding mutagenized derivatives, RBP-8000 and E196-301, although improving in vitro thermo-stability and in vivo half-life, were a partial solution to the problem. For cocaine use disorder treatment, an efficient cocaine-metabolizing enzyme with a longer residence time in circulation would be needed. We investigated in vitro the possibility of developing red blood cells (RBCs) loaded with RBP-8000 and E196-301 as a biocompatible system to metabolize cocaine for a longer period of time. RBP 8000 stability within human …


Encoding The Odor Of Cigarette Smoke, Timothy S. Mcclintock, Naazneen Khan, Yelena Alimova, Madeline Aulisio, Dong Y. Han, Patrick Breheny Sep 2020

Encoding The Odor Of Cigarette Smoke, Timothy S. Mcclintock, Naazneen Khan, Yelena Alimova, Madeline Aulisio, Dong Y. Han, Patrick Breheny

Physiology Faculty Publications

The encoding of odors is believed to begin as a combinatorial code consisting of distinct patterns of responses from odorant receptors (ORs), trace-amine associated receptors (TAARs), or both. To determine how specific response patterns arise requires detecting patterns in vivo and understanding how the components of an odor, which are nearly always mixtures of odorants, give rise to parts of the pattern. Cigarette smoke, a common and clinically relevant odor consisting of > 400 odorants, evokes responses from 144 ORs and 3 TAARs in freely behaving male and female mice, the first example of in vivo responses of both ORs and …


Advising Physiology Students: Perceptions From The Programs, Anne R. Crecelius, Patrick L. Crosswhite Sep 2020

Advising Physiology Students: Perceptions From The Programs, Anne R. Crecelius, Patrick L. Crosswhite

Health and Sport Science Faculty Publications

Academic advising outcomes can be linked to both student success and retention. Yet relatively little is known specifically related to advising in physiology programs. Pro- fessional organizations dedicated to academic advising in general, and more specifically advising future health professional students exist, yet, whether current physiology programs utilize these resources remains unknown, as does a number of other demographic informa- tion about advising in physiology programs. Here we present data gathered from a sample of physiology educators to inform what current advising practices of physiology students are. Forty-five re- spondents from a variety of institutions and programs provided information on …


The Case For Coordinating Efforts To Establish Program Guidelines And Strengthen Physiology Undergraduate Degree Programs, Erica A. Wehrwein, Lisa C. Anderson, Anne R. Crecelius, Claudia I. Stanescu, James M. Poteracki, John R. Halliwill, Nancy M. Aguilar-Roca, Jennifer Rogers Sep 2020

The Case For Coordinating Efforts To Establish Program Guidelines And Strengthen Physiology Undergraduate Degree Programs, Erica A. Wehrwein, Lisa C. Anderson, Anne R. Crecelius, Claudia I. Stanescu, James M. Poteracki, John R. Halliwill, Nancy M. Aguilar-Roca, Jennifer Rogers

Health and Sport Science Faculty Publications

Undergraduate degree programs named “Physiology” have existed for over 50 yr. The number of programs and enrolled students have been growing since ~2005 (5, 9). There are many thousands of students currently enrolled in physiology pro- grams across the United States and indeed across the world. Despite the long history and current popularity of the physiol- ogy major, there is no coordinated plan articulated for the design, administration, or assessment of degree programs in physiology at the undergraduate level.

Although several professional societies have invested in under- graduate physiology education in various ways, none has under- taken the task of …


Modulation Of Escherichia Coli Translation By The Specific Inactivation Of TrnaGly Under Oxidative Stress, Lorenzo Eugenio Leiva, Andrea Pincheira, Sara Elgamal, Sandra D. Kienast, Verónica Bravo, Johannes Leufken, Daniela Gutiérrez, Sebastian A. Leidel, Michael Ibba, Assaf Katz Aug 2020

Modulation Of Escherichia Coli Translation By The Specific Inactivation Of TrnaGly Under Oxidative Stress, Lorenzo Eugenio Leiva, Andrea Pincheira, Sara Elgamal, Sandra D. Kienast, Verónica Bravo, Johannes Leufken, Daniela Gutiérrez, Sebastian A. Leidel, Michael Ibba, Assaf Katz

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Bacterial oxidative stress responses are generally controlled by transcription factors that modulate the synthesis of RNAs with the aid of some sRNAs that control the stability, and in some cases the translation, of specific mRNAs. Here, we report that oxidative stress additionally leads to inactivation of tRNAGly in Escherichia coli, inducing a series of physiological changes. The observed inactivation of tRNAGly correlated with altered efficiency of translation of Gly codons, suggesting a possible mechanism of translational control of gene expression under oxidative stress. Changes in translation also depended on the availability of glycine, revealing a mechanism whereby bacteria …