Medicine and Health Sciences Commons^™

Aphasia In South Asian Languages (Asal) Project: A Protocol Of Connected Speech Tasks For Investigating Cross-Linguistic Grammatical Profiles In Aphasia For South Asian Languages, Arpita Bose, Sakshi Bhatia, Lakshmi Venkatesh, Sayantani Banerjee, Gurujegan Murugesan, Sunila John, Sakshi Upadhyay, Manaswita Dutta, Mythili Menon, Danielle Fahey, Multiple Additional Authors

Speech and Hearing Sciences Faculty Publications and Presentations

Background

Languages vary in their syntactic (e.g. word order in sentences), lexical (e.g. presence of specific word classes), and morphological (e.g. inflectional or derivational forms of words) properties. This cross-linguistic variation in language typology influences the manifestation of agrammatic symptoms. However, most theoretical models of agrammatism are based on English and a few European languages, limiting their generalizability. This narrow focus neglects the rich syntactic, lexical and morphological variations available in languages globally. Clinically, the lack of language-specific characteristics of agrammatic impairments limits translational potential for precise and improved diagnosis. The Aphasia in South Asian Languages (ASAL) project addresses this …

Redefining The Albumin-Bilirubin Score: Predictive Modeling And Multidimensional Integration In Liver And Systemic Disease, Berkay Demirors, Ramin Shekouhi, Paola Berrios Jimenez, Anjali Yadav, Guido Chiriboga, Vishal A. Mahesh, Harsheen K. Manaise, Jade Bowers, Angel Aguayo Merly, Emmanuel Gabriel

School of Medicine Faculty Publications

This editorial comment is on the article by Xu et al. It offers an in-depth analysis of liver function assessment tools and their prognostic roles in non-malignant liver diseases, with a focus on the albumin-bilirubin (ALBI) score. ALBI’s components, grading system, and clinical relevance across various liver conditions are reviewed and compared with traditional models such as the Child-Pugh and model for end-stage liver disease scores. We included recent studies evaluating ALBI’s role in estimating liver function, suggesting it may help differentiate patients who appear similar under other staging systems, and assist in guiding clinical decisions. Although ALBI is primarily …

Trajectories Of Recovery After Intravenous Propofol Versus Inhaled Volatile Anaesthesia (Thrive) Randomised Controlled Trial In The Usa: A Protocol, Bethany R Tellor Pennington, Laura Swisher, Mara L Bollini, Michael S Avidan, Et Al.

2020-Current year OA Pubs

INTRODUCTION: Millions of patients receive general anaesthesia every year with either propofol total intravenous anaesthesia (TIVA) or inhaled volatile anaesthesia (INVA). It is currently unknown which of these techniques is superior in relation to patient experience, safety and clinical outcomes. The primary aims of this trial are to determine (1) whether patients undergoing (a) major inpatient surgery, (b) minor inpatient surgery or (c) outpatient surgery have a superior quality of recovery after INVA or TIVA and (2) whether TIVA confers no more than a small (0.2%) increased risk of definite intraoperative awareness than INVA.

METHODS AND ANALYSIS: This protocol was …

Glucometer Cleanliness On A Neuro-Medical Intensive Care Unit, Abbey Camire

Operations Transformation

Glucometers on the Neuro-Medical ICU are being docked with visible reddish/brown residue, indicating they are not properly cleaned beforehand. This poses a risk of transmitting pathogens, endangering patient and staff safety, and violates hospital policy and regulatory standards. Proper disinfection of mobile medical equipment is essential for infection control and hospital accreditation.

Isolated Transaminitis As A Sentinel Sign Of Duchenne Muscular Dystrophy In An Infant: A Case Report, Ayesha Khalid, Tuba Chaudhry, Ayesha Liaqat, Lauren Tufts

School of Medicine Faculty Publications

Duchenne muscular dystrophy (DMD) is an X-linked recessive muscular dystrophy (MD) that typically presents after ambulation due to progressive proximal muscle weakness. The average age of diagnosis is 4.83 years. However, there are some subtle signs that can help in early diagnosis and delay the progression of the disease. We present a non-classical DMD case in a six-month-old infant with failure to thrive, persistent emesis, transaminitis, and truncal weakness, leading to an early diagnosis of DMD. Initial workup for failure to thrive was unremarkable, other than persistently elevated liver enzymes aspartate aminotransferase (AST) and alanine transaminase (ALT) with normal alkaline …

Naming Practice Effects And Inconsistencies Relate To Treatment Outcome In People With Aphasia, Janina Wilmskoetter, Katherine Blackwood, Sigfus Kristinsson, Grant Walker, Julius Fridriksson, Deena Schwen Blackett, Dirk B. Den Ouden, Chris Rorden, Argye E. Hillis, Gregory Hickok, Sara Sayers, Leigh Ann Spell, Leonardo Bonilha

Communication Sciences and Disorders Faculty Articles and Research

Background and aims

Method

Potential For Therapeutic Alteration Of The Underlying Biology Of Epilepsy, Michael R. Sperling, Jurriaan M. Peters, Qian Wu, Michelle Guignet, H. Steve White, Evelyn K. Shih, Leock Y. Ngo, Enrique Carrazana, Adrian L. Rabinowicz

Department of Neurology Faculty Papers

Approximately 30-35% of people with epilepsy experience seizures despite taking antiseizure medications. Recurrent seizures that are independent of status epilepticus can be associated with neuronal injury and structural changes to the brain, as well as diminished cognitive function, mood, and quality of life. A treatment that alters the underlying biology of epilepsy, thereby reducing the seizure burden and its attendant consequences, would be of great value in preventing these detrimental effects. In this review, we summarize preclinical and clinical research on pharmacological treatments that may favorably alter the underlying biology of epilepsy (i.e., disease modification or antiepileptogenesis). A reduction in …

Somatostatin Receptor 2 Overexpression In Hepatocellular Carcinoma: Implications For Cancer Biology And Therapeutic Applications, Servando Hernandez Vargas, Solmaz Aghaamiri, Jack T Adams, Tyler M Bateman, Belkacem Acidi, Sukhen C Ghosh, Vahid Khalaj, Ahmed O Kaseb, Hop S Tran Cao, Majid Momeny, Ali Azhdarinia

The Brown Foundation: Institute of Molecular Medicine

Background: Somatostatin receptor 2 (SSTR2), a G protein-coupled receptor, is overexpressed in multiple malignancies, including hepatocellular carcinoma (HCC). While SSTR2 has traditionally been viewed as an inhibitory receptor involved in suppressing hormone secretion and cell proliferation, emerging evidence suggests a more complex role in cancer biology. However, the functional implications of SSTR2 expression in HCC remain poorly understood. This study aimed to systematically investigate the molecular landscape associated with SSTR2 expression in HCC and evaluate its potential as a therapeutic target.

Methods: SSTR2 expression patterns across 22 tumor types were assessed using TNMplot, and its expression in HCC was further …

Pediatric Epilepsy Surgery: The Noninvasive Presurgical Evaluation, Deepankar Mohanty, Michael Quach

Faculty, Staff and Students Publications

Background: Drug-resistant epilepsy is a debilitating condition that afflicts individuals across all demographics, including children. The only recourse for many of these individuals is neurosurgery to reduce seizure burden, by either resecting or ablating the cerebral source or modulating it with a stimulator device. In either case, a thorough presurgical evaluation is required to identify brain regions of interest and construct an appropriate surgical plan. The scope of this evaluation has grown rapidly over the years as new and refined techniques have emerged. The aim of this article was to condense the most salient points regarding investigational tools used commonly …

Preclinical Perspectives On Disorders Of The Temporomandibular Joint: Tracing The Past, Navigating The Present, And Shaping The Future, John K Neubert, Kyle Allen, Tamara Alliston, Alejandro J Almarza, Kyriacos A Athanasiou, Basak Donertas-Ayaz, Bruna Balbino De Paula, Roxanne Bavarian, Nidhi Bhutani, Brian E Cairns, Robert M Caudle, Yang Chai, Jian-Fu Chen, Yong Chen, Glenn T Clark, Yenisel Cruz-Almeida, Alexandre F Dasilva, Paul L Durham, Airam Vivanco Estela, Millie Embree, Roger Fillingim, Fernando Guastaldi, Shruti Handa, Sunil D Kapila, David Keith, Keith L Kirkwood, Phillip Kramer, Katherine T Martucci, Niall P Murphy, Andrea G Nackley, Richard Ohrbach, Benedikt Sagl, Shad B Smith, Feng Tao, Beth Winkelstein, Hai Yao, Simon Young, Michael S Gold

Faculty, Staff and Student Publications

Temporomandibular disorders (TMDs) are complex conditions characterized by orofacial pain and dysfunction, affecting a significant portion of the population. TMDs may involve joint and/or muscle pain, dysfunction (e.g., noise, limited or altered jaw movements), or both, leading to a marked decrease in quality of life. Patients often experience functional limitations that hinder eating, speaking, and daily activities. Additionally, TMDs are frequently associated with psychological distress, including anxiety and depression, which further impacts overall well-being. Despite the profound individual and societal impact of TMDs, effective therapies remain elusive, partly due to deficiencies in translational research. A primary limitation in the TMD …

Study Of Clinical And Bacteriological Profile Of Culture-Positive Neonatal Sepsis At A Tertiary Care Hospital, Qudsiya Ansari, Vaibhav Pawar, Kailas Randad, Poonam Wade

Digital Journal of Clinical Medicine

Background: Neonatal sepsis is a significant global health challenge, leading to substantial morbidity and mortality among neonates. Its clinical manifestations and causative agents show regional and temporal variations, necessitating localized studies to guide effective management. This study aimed to assess the clinical features, bacteriological profile, and antimicrobial resistance patterns in culture-positive neonatal sepsis at a tertiary NICU. Methods: This retrospective observational study analyzed records of 131 inborn neonates with culture-proven sepsis admitted between April 2019 and March 2020. Data on demographic characteristics, clinical presentations, causative organisms, and treatment outcomes were examined. Antibiotic susceptibility patterns were also evaluated. Results: Of the …

Practice Patterns In The Management Of Pemphigus – An International Survey Study, Idy Tam, Gabriela Cobos, Zachary M. Schwager, Erin X. Wei

The Lahey Journal

Introduction: Anti-CD20 therapy (rituximab) has emerged as an effective and disease modifying treatment for pemphigus, especially in early disease. However, significant variability exists around the clinical application of this therapy.

Methods: In this survey-based study among bullous disease experts, we investigated practice patterns surrounding the use of rituximab in the management of pemphigus. Anonymized surveys were sent to physician members of the internation Pemphigus and Pemphigoid Foundation. Topics of inquiry included the use of rituximab first line in newly diagnosed pemphigus, rituximab dosing regimen, use of concomitant steroid sparing agents, criteria for retreatment, and the use of antimicrobial prophylaxis.

Results: …

Severe Hyponatremia Presenting With Mild Symptoms And Multifactorial Etiology, Nathaniel Lin, Muhammad Cheema, Usman Fahim, Abdullah Ali, Andrew Weber

Journal of Community Hospital Internal Medicine Perspectives

Hyponatremia is a common electrolyte disturbance; however, serum sodium level of 99 mEq/L without severe symptoms or known duration is rare and noteworthy. We report a case of an 87-year-old female who presented with fatigue, decreased appetite, and mild emesis for the past 2 days in which blood work revealed a serum sodium level 99 mEq/L. The etiology of hyponatremia in an elderly patient may be complex due to higher likelihood of co-morbid medical conditions. Additionally, syndrome of inappropriate antidiuretic hormone (SIADH) can pose a diagnostic challenge as fewer than 50% of patients have typical lab results that confirm the …

Bilateral Pulmonary Embolism With Bi-Atrial Cardiac Thrombi Entrapped In A Patent Foramen Ovale, Denise Mourad, Fahd Eissa Mohamed, Yashi Ballal, Elie Mrad, Natasa Petreska, Sachin Singh, Paritharsh Ghantasala

Journal of Community Hospital Internal Medicine Perspectives

Bi-atrial thrombi with bilateral pulmonary embolism (PE) through a patent foramen ovale (PFO) is rare and life-threatening, requiring urgent management due to embolization risk. We present a 53-year-old female with left lower extremity extensive deep vein thrombosis (DVT), bilateral PE, and bi-atrial thrombi straddling a PFO. She underwent thrombectomy, PFO closure, and pulmonary embolectomy but later experienced recurrent DVT and PE. Anticoagulation was limited due to bleeding risk given a recent neurosurgery. Literature lacks clear guidelines for managing such cases necessitating individualized treatment. This case highlights the complexity of bi-atrial thrombi with PFO and the need for further research to …

Investigation Of The Optimal Length Of Discharge Summaries In Care Transitions: A Cross-Sectional Study, Taku Harada, Shintaro Kosaka, Aki Morishima, Seitaro Iguchi

Journal of Community Hospital Internal Medicine Perspectives

Introduction

Discharge summaries are essential documents that support continuity of care during patient transitions between inpatient and outpatient settings. They help ensure that crucial clinical information is conveyed accurately and completely. However, while their clinical significance is well established, there is little consensus on the optimal format, particularly in terms of length and structural clarity. Excessively brief summaries may omit key details, while overly lengthy ones can hinder efficient information transfer. Despite varied suggestions in the literature—ranging from half a page to four pages—empirical data on physician preferences are limited.

Methods

We conducted a cross-sectional, web-based survey among physicians who …

Fluid Resuscitation Choice And Its Effect On Plasma Chloride And Acute Kidney Injury In Severe Acute Pancreatitis: A Randomized Study Of Normal Saline Vs. Balanced Crystalloids (Physiomax), Mandip Singh Bhatia, Ritu Attri, Ashok Kumar Pannu, Atul Saroch, Saurabh C Sharda, Neeraj Singla, Sakshi Mehta

Journal of Community Hospital Internal Medicine Perspectives

Background: Acute pancreatitis (AP) is a potentially fatal gastrointestinal condition, often associated with organ failure and acute kidney injury (AKI). Early fluid resuscitation with Normal saline (NS) may lead to hyperchloremia and AKI, which prompted interest in using balanced crystalloids. However, the optimal choice of crystalloid fluid remains uncertain. This study aimed to compare the effects of NS versus Physiomax on plasma chloride levels and AKI incidence during early resuscitation in patients with predicted severe AP (pSAP).

Methods: A single-center, prospective, randomized study was conducted between November 2022 and December 2023 at PGIMER, Chandigarh, India. 112 patients with pSAP were …

Role Of Addiction Medicine Consultation Service In A Community Hospital: Evaluation Of The Novel Service, Srikrishna Varun Malayala, Wesley Cervantes Perez, Rukshar Thapa, Archie Madan, Kushagar Singla, Pragyat Singh, Pelash Kumar, Akshay Thaper

Journal of Community Hospital Internal Medicine Perspectives

Objectives: Fewer than 2,500 physicians nationwide are certified in addiction medicine. Inpatient addiction hospitalist services have been shown to improve patient outcomes, but their capabilities and impact are underexplored in community hospitals. This study evaluates the role of an addiction medicine hospitalist service in enhancing patient outcomes in two community-based hospitals.

Methods: A retrospective chart review was conducted on patients who received care from addiction medicine service in two hospitals. The data were collected within the first 120 days of the establishment of service. The reason for consultation, substances used, types of management, impact on transition of care, readmissions and …

Educational Development For New Gme Programs At Community Hospitals: Process, Outcomes And Recommendations, Ebun O. Ebunlomo, Christine Ford, Kamilla Guinn, Lauren Irwin

Journal of Community Hospital Internal Medicine Perspectives

Introduction: Changes in the U.S. healthcare system have led to graduate medical education (GME) programs expanding beyond academic medical centers to community hospitals. Direct-care physicians at these hospitals are now responsible for supervising trainees, requiring them to develop new skills in education. This article describes how our educational development office collaborated with community hospital GME program directors to pilot faculty development programming to integrate community hospital physicians into trainee education.

Methods: We met with program directors for two GME community programs, reviewed topics that would be most helpful to clinicians who are unfamiliar with education, and organized workshops …

Inovasi Aplikasi Adhimukti Brata Care Stunting Berbasis Appsheet Untuk Pendataan Status Gizi Anak Di Kabupaten Banggai, Moh. Saputra Tambora, Imelda Hutasoit

Jurnal Biostatistik, Kependudukan, dan Informatika Kesehatan

Stunting merupakan masalah kesehatan serius di Indonesia, termasuk di Kabupaten Banggai dengan prevalensi 29,1% pada tahun 2023. Keterlambatan intervensi sering terjadi akibat keterbatasan data gizi anak yang akurat, terbaru, dan mudah diakses. Penelitian ini bertujuan mendeskripsikan pengembangan Aplikasi Adhimukti Brata Care Stunting berbasis AppSheet sebagai solusi pendataan gizi anak secara real-time. Metode yang digunakan adalah research and development (R&D) dengan model prototyping, meliputi tahap analisis kebutuhan, perancangan, implementasi, uji coba teknis, dan penyempurnaan. Data diperoleh dari hasil uji coba aplikasi, observasi proses input, serta masukan pengguna awal yaitu petugas DP2KBP3A, PKB, dan kader posyandu. Hasil pengembangan menunjukkan aplikasi …

Opposing Synovial Cannabinoid Receptor Type 2 And Transient Receptor Potential Vanilloid 1 Expression In Painful Osteoarthritis, Collin A. Toups, Lauren G. Guillot, Kaitlyn Redondo, Sydney Jensen, Jennifer Klein, Luis Marrero

School of Medicine Faculty Publications

Knee osteoarthritis (kOA) poses a major health challenge worldwide, but current non-surgical treatments have limited long-term success and do not address the underlying disease process. This study explores the complex relationship between the endocannabinoid system (ECS) and the endovanilloid system (EVS) in the synovial membrane of patients with kOA undergoing total knee replacement, focusing on how these systems relate to patient-reported pain and histological synovitis. Synovial tissues and fluid from patients grouped into high and low pain categories based on the Knee Injury and Osteoarthritis Outcome Score (KOOS) were examined for cannabinoid receptor type 2 (CB2R), transient receptor potential vanilloid …

Development And Validation Of An Ai-Based Lung Lobe Auto-Contouring Tool Using Radiation Therapy Planning Free-Breathing Images, Peter Ciaccio, Joseph Lombardo, Andrew Fuquay, Soroush Pahlavian, Rachel Grimm, Jun Kang, Wookjin Choi, Paul Sullivan, Yevgeniy Vinogradskiy

Department of Radiation Oncology Faculty Papers

BACKGROUND: Pulmonary toxicity can occur during radiation therapy of the lungs. Dose metrics evaluated at the lobar level can improve the ability to predict toxicity. Contouring lung lobes is challenging and time consuming. Currently there are limited dosimetry studies evaluating the dose to lung lobes. The purpose of this work was to develop and validate an artificial intelligence (AI) lung lobe auto-contouring algorithm using radiation therapy planning images.

MATERIALS AND METHODS: Fifty lung cancer patients from two institutions were analyzed, and a clinician contoured all five lung lobes [left upper lobe (LUL), left lower lobe (LLL), right upper lobe (RUL), …

Targeting Kinin B1r Attenuates Hypertension Through At1r-Dependent Mechanisms, Drew Theobald, Riley N. Bessetti, Yumei Feng Earley, Eric Lazartigues, Karen Litwa, Srinivas Sriramula

School of Medicine Faculty Publications

BACKGROUND: Neurogenic hypertension is chronically high blood pressure that is initiated and maintained through excessive sympathetic nervous system activity and has been associated with increased B1R (kinin B1 receptor) activation. We previously reported a central role for B1R in mediating inflammatory pathways in the development of deoxycorticosterone acetate salt hypertension. Additionally, we identified a causal relationship between B1R expression after Ang II (angiotensin II) stimulation, and that B1R can mediate the bidirectional interaction between neuroinflammation and oxidative stress. However, whether there are any interactions between AT1R (Ang II-type I receptor) and B1R, and if B1R can mediate the effects of …

In-Hospital Exposure And Opioids Prescribed After Total Knee Arthroplasty, Clifton Daigle, Robert Branstetter, Leland Van Deventer, Ravi Rajendra, Claudia Leonardi, Amy Bronstone, Vinod Dasa

School of Medicine Faculty Publications

BACKGROUND: Opioids are frequently used intraoperatively and during postanesthesia care unit care in total knee arthroplasty (TKA) cases and are commonly prescribed after surgery despite known adverse effects. This study examined whether in-hospital opioid exposure is related to postoperative opioid prescribing in opioid-naïve TKA patients. METHODS: This retrospective study included opioid-naïve patients (no opioid prescriptions filled during the three months before TKA) who had unilateral primary TKA between May 1, 2020, and November 30, 2023, performed by an orthopaedic surgeon. All patients were treated using the same multimodal pain protocol. Opioid prescriptions filled by patients during the three months following …

Association Between Climate Change Awareness And Depression & Anxiety: Findings From A U.S. Sample, Stanley Nkemjika, Colvette Brown, Henry Onyeaka, Srikanta Banerjee, Jennifer Oliphant

Department of Psychiatry and Human Behavior Faculty Papers

BACKGROUND: Exploring the connection between climate change awareness and overall well-being is crucial, particularly in how it impacts both the environment and mental health. The mental health consequences of climate change and its awareness have not been thoroughly examined, especially in the U.S. In this study, the relationship between awareness of climate change and depression or anxiety among U.S. adults was explored. Similarly, the role of climate change awareness has not been explored in relation to mental health concerns.

METHODS: Based on the HINTS-6 dataset, a nationally representative, cross-sectional survey conducted by the National Cancer Institute, a variety of statistical …

Staff Education To Pediatric Healthcare Providers On How To Prevent Unintentional Childhood Injuries., Peter Cleveland Collins

Walden Dissertations and Doctoral Studies

This staff education quality improvement Doctor of Nursing Practice (DNP) project was focused on teaching pediatric healthcare providers how to provide education during wellness visits to prevent unintentional childhood injury. The practice problem at the clinic was that pediatric providers lacked knowledge about injury prevention. A literature review showed that unintentional childhood injuries are the leading cause of death in this population. The practice-focused question determined was to determine if, after educating providers, they have improved knowledge and intent to educate their patients. I used the analysis, design, development, implementation and evaluation (ADDIE) model to guide this project. The participants …

Nevus Sebaceous Of Jadassohn With Secondary Cystic Papillary Hidradenoma, Jordan A. Book, Rosemary Prejean, Jonathan M. Joseph, Nicholas Culotta, Christopher Haas

School of Medicine Faculty Publications

Nevus sebaceous of Jadassohn (NS) is a congenital cutaneous hamartoma that typically presents at birth as a plaque on the face, scalp, or neck. While NS is associated with a risk of neoplastic transformation, the majority of secondary tumors are benign, with the most common being trichoblastomas and syringocystadenomas. In this report, we present a rare case of a 63-year-old male with a right parietal scalp NS with a secondary cystic papillary hidradenoma (HP), which is a benign tumor that almost exclusively occurs in the perineal region. Histopathologic examination was consistent with NS, revealing hyperkeratosis, parakeratosis, increased sebaceous glands, ectopic …

Optimization Of Spinal Cord Perfusion Pressure For Improvement Of Neurological Outcome In Traumatic Spinal Cord Injury: A Systematic Review And Meta-Analysis, Gabrielle E. Hovis, Brandon Sherrod, Nitin Agarwal, Berje H. Shammassian, Anthony M. Digiorgio, Ramesh Grandhi, Bryce Picton

School of Medicine Faculty Publications

The optimal hemodynamic management of traumatic spinal cord injury (tSCI) is not well established. We performed a systematic review and meta-analysis of patients with acute tSCI to assess the role of lumbar cerebrospinal fluid drainage (CSFD) and to identify factors predictive of neurological improvement. Three studies involving 46 patients with acute tSCI, lumbar drain placement with CSFD, and available pre- and post-intervention American Spinal Injury Association (ASIA) Impairment Scale or International Standards for Neurological Classification of Spinal Cord Injury (ISNCSCI) motor scores were identified. One study was analyzed separately (Cohort A) using ASIA grade because post-intervention ISNCSCI motor scores were …

Effects Of 17Β-Estradiol Treatment On Metabolic Function And Aortic Relaxation In Castrated Male Rats, Rifat A. Islam, Md R. Razan, Ankita Poojari, Mohammad M. Rahman, Hao Wei, Hana S. Alhamadsheh, Melanie Felmlee, Atefeh Rabiee, Mitra Esfandiarei, Roshanak Rahimian

Pacific Faculty Work

Exogenous estrogen use in male-to-female individuals has been linked to increased cardiovascular disease risk, though the mechanisms remain unclear. This study examines the effects of 17β-estradiol (E2) on metabolic and aortic function in castrated (CAS) male Sprague Dawley rats. CAS rats received subcutaneous E2 (CAS + E2) or placebo (CAS + PL) pellets for ~35 days, with intact males serving as controls. Endothelium-dependent vasorelaxation (EDV) in response to acetylcholine and contractile responses to phenylephrine were measured in aorta before and after pharmacological inhibitors. Metabolic parameters and expression of proteins associated with vascular and insulin signaling were also determined in aorta …

A Novel Sialylation Pathway Mediated By Extracellular Vesicles In Aggressive Prostate Cancer, Camila A. Bach, Md Niamat Hossain, Ishan J. Chaudhari, Cecilia E. Verrillo, Nicole M. Naranjo, Isabella Amoroso, Anna Testa, Samuel Sey, W. Kevin Kelly, Susan L. Bellis, Aurelio Lorico, Ada G. Blidner, Gabriel A. Rabinovich, Lucia R. Languino

Department of Pharmacology, Physiology, and Cancer Biology Faculty Papers

Altered cell surface glycosylation is a hallmark of cancer; among aberrant glycan structures, hypersialylated proteins contribute to disease progression. The enzyme ST6 β-galactoside α2,6-sialyltransferase 1 (ST6GAL1) mediates α2,6-linked sialylation of N-glycosylated proteins and is upregulated in many cancers, including prostate cancer (PrCa). We propose that ST6GAL1 may be released by cancer cells in small extracellular vesicles (sEVs) in the PrCa tumor microenvironment to potentially modulate cell surface sialylation in recipient cells. We isolated sEVs from PrCa cells by density gradient separation and characterized them by nanoparticle tracking analysis using ZetaView and immunoblotting analysis. We identified ST6GAL1 in both its membrane-bound …

Distinct Transcriptional Regulation Of The Wnt And Tgfβ Signaling Families Associated With Wound Healing And Fibrotic Outcomes To Lens Injury, Catherine Lalman, Kylie R. Stabler, Joshua Disatham, Lisa A. Brennan, Marc Kantorow, Janice L. Walker

Department of Pathology, Anatomy, and Cell Biology Faculty Papers

Posterior capsule opacification (PCO) is a fibrotic complication of cataract surgery caused by aberrant repair of residual lens cells. It remains unclear how the lens injury response shifts toward a pathological repair process. Here, we performed a transcriptional analysis of two major pro-fibrotic pathways, the TGF-β superfamily and Wnt signaling pathways to determine how they are differentially regulated during regenerative wound healing versus fibrosis in a lens injury model. For these studies, RNA sequencing was performed on an ex vivo lens explant system that models post-surgical healing within regenerative and fibrotic microenvironments, from 0 to 3 days post-injury. Fibrotic conditions …