Medicine and Health Sciences Commons^™

Snx3 Is Important For Mammalian Neural Tube Closure Via Its Role In Canonical And Non-Canonical Wnt Signaling, Lei Dong, Mengchuan Xu, Yang Li, Wanting Xu, Chengwei Wu, Hanfei Zheng, Zhenyu Xiao, Guochen Sun, Lei Ding, Xiaobo Li, Wenming Li, Liying Zhou, Qin Xia

Faculty, Staff and Student Publications

Cancer cells consistently utilize the unfolded protein response (UPR) to encounter the abnormal endoplasmic reticulum (ER) stress induced by the accumulation of misfolded proteins. Extreme activation of the UPR could also provoke maladaptive cell death. Previous reports have shown that NRF2 antioxidant signaling is activated by UPR and serves as noncanonical pathway to defense and reduce excessive ROS levels during ER stress. However, the mechanisms of regulating NRF2 signaling upon ER stress in glioblastoma have not been fully elucidated. Here we identify that SMURF1 protects against ER stress and facilitates glioblastoma cell survival by rewiring KEAP1-NRF2 pathway. We show that …

The Effectiveness Of Disinfection Protocols In Medical School Osteopathic Manipulative Medicine Labs., Harrison A. Patrizio, Riley Phyu, Thomas Boyle, Todd Schachter

Rowan-Virtua School of Osteopathic Medicine Departmental Research

CONTEXT: In light of the COVID-19 pandemic, healthcare-associated infections have taken center stage. Healthcare has adjusted workflows to accommodate for more robust disinfecting regiments to help protect the community. This has resulted in the need for medical institutions to reevaluate the current disinfection protocols down to the student level. The osteopathic manipulative medicine (OMM) laboratory provides an optimal avenue for assessing the effectiveness of medical students' ability to clean examination tables. With OMM laboratories having a high level of interaction, adequate disinfection is important for the health and safety of students and teaching faculties.

OBJECTIVES: This study will evaluate the …

Sars-Cov-2 Next Generation Sequencing (Ngs) Data From Clinical Isolates From The East Texas Region Of The United States, Rob E. Carpenter, Vaibhav K. Tamrakar, Advanta Genetics

Human Resource Development Faculty Publications and Presentations

The SARS-CoV-2 virus has evolved throughout the pandemic and is likely to continue evolving into new variants. Some of these variants may affect functional properties, including infectivity, interactions with host immunity, and disease severity. And compromised vaccine efficacy is an emerging concern with every new viral variant. Next-generation sequencing (NGS) has emerged as the tool of choice for discovering new variants and understanding the transmission dynamics of SARS-CoV-2. Deciphering the SARS-CoV-2 genome has enabled epidemiological survivance and forecast of altered etiologically. Clinical presentations of the infection are influenced by comorbidities such as age, immune status, diabetes, and the infecting variant. …

Editorial: Developments In Sickle Cell Disease Therapy And Potentials For Gene Therapy, Robert W. Maitta, Hollie M. Reeves

Faculty Scholarship

No abstract provided.

Her3-Targeted Therapeutic Antibodies And Antibody–Drug Conjugates In Non-Small Cell Lung Cancer Refractory To Egfr-Tyrosine Kinase Inhibitors, Margaret E. Larsen, Hui Lyu, Bolin Liu

School of Medicine Faculty Publications

Human epidermal growth factor receptor 3 (HER3) is a unique member of the human epidermal growth factor receptor (HER/EGFR) family, since it has negligible kinase activity. Therefore, HER3 must interact with a kinase-proficient receptor to form a heterodimer, leading to the activation of signaling cascades. Overexpression of HER3 is observed in various human cancers, including non-small cell lung cancer (NSCLC), and correlates with poor clinical outcomes in patients. Studies on the underlying mechanism demonstrate that HER3-initiated signaling promotes tumor metastasis and causes treatment failure in human cancers. Upregulation of HER3 is frequently observed in EGFR-mutant NSCLC treated with EGFR-tyrosine kinase …

Advances And Emerging Medical Applications Of Direct Mass Spectrometry Technologies For Tissue Analysis, Mary E King, Monica Lin, Meredith Spradlin, Livia S Eberlin

Faculty, Staff and Students Publications

Offering superb speed, chemical specificity, and analytical sensitivity, direct mass spectrometry (MS) technologies are highly amenable for the molecular analysis of complex tissues to aid in disease characterization and help identify new diagnostic, prognostic, and predictive markers. By enabling detection of clinically actionable molecular profiles from tissues and cells, direct MS technologies have the potential to guide treatment decisions and transform sample analysis within clinical workflows. In this review, we highlight recent health-related developments and applications of direct MS technologies that exhibit tangible potential to accelerate clinical research and disease diagnosis, including oncological and neurodegenerative diseases and microbial infections. We …

An Agenda To Advance Research In Myelodysplastic Syndromes: A Top 10 Priority List From The First International Workshop In Mds, Maximilian Stahl, Omar Abdel-Wahab, Andrew H. Wei, Michael R. Savona, Mina L. Xu, Zhuoer Xie, Justin Taylor, Daniel Starczynowski, Guillermo F. Sanz, David A. Sallman, Valeria Santini, Gail J. Roboz, Mrinal M. Patnaik, Eric Padron, Olatoyosi Odenike, Aziz Nazha, Stephen D. Nimer, Ravindra Majeti, Richard F. Little, Steven Gore, Alan F. List, Vijay Kutchroo, Rami S. Komrokji, Tae Kon Kim, Nina Kim, Christopher S. Hourigan, Robert P. Hasserjian, Stephanie Halene, Elizabeth A. Griffiths, Peter L. Greenberg, Maria Figueroa, Pierre Fenaux, Fabio Efficace, Amy E. Dezern, Matteo G. Della Porta, Naval G. Daver, Jane E. Churpek, Hetty E. Carraway, Andrew M. Brunner, Uma Borate, John M. Bennett, Rafael Bejar, Jacqueline Boultwood, Sanam Loghavi, Jan Philipp Bewersdorf, Uwe Platzbecker, David P. Steensma, Mikkael A. Sekeres, Rena J. Buckstein, Amer M. Zeidan

Department of Medical Oncology Faculty Papers

No abstract provided.

Microbiome Alteration Via Fecal Microbiota Transplantation Is Effective For Refractory Immune Checkpoint Inhibitor-Induced Colitis, Taylor M Halsey, Anusha S Thomas, Tomo Hayase, Weijie Ma, Hamzah Abu-Sbeih, Baohua Sun, Edwin Roger Parra, Zhi-Dong Jiang, Herbert L Dupont, Christopher Sanchez, Rawan El-Himri, Alexandria Brown, Ivonne Flores, Lauren Mcdaniel, Miriam Ortega Turrubiates, Matthew Hensel, Dung Pham, Stephanie S Watowich, Eiko Hayase, Chia-Chi Chang, Robert R Jenq, Yinghong Wang

Faculty, Staff and Student Publications

Immune checkpoint inhibitors (ICIs) target advanced malignancies with high efficacy but also predispose patients to immune-related adverse events like immune-mediated colitis (IMC). Given the association between gut bacteria with response to ICI therapy and subsequent IMC, fecal microbiota transplantation (FMT) represents a feasible way to manipulate microbial composition in patients, with a potential benefit for IMC. Here, we present a large case series of 12 patients with refractory IMC who underwent FMT from healthy donors as salvage therapy. All 12 patients had grade 3 or 4 ICI-related diarrhea or colitis that failed to respond to standard first-line (corticosteroids) and second-line …

A Multi-Omics Atlas Of The Human Retina At Single-Cell Resolution, Qingnan Liang, Xuesen Cheng, Jun Wang, Leah Owen, Akbar Shakoor, John L Lillvis, Charles Zhang, Michael Farkas, Ivana K Kim, Yumei Li, Margaret Deangelis, Rui Chen

Faculty, Staff and Students Publications

Cell classes in the human retina are highly heterogeneous with their abundance varying by several orders of magnitude. Here, we generated and integrated a multi-omics single-cell atlas of the adult human retina, including more than 250,000 nuclei for single-nuclei RNA-seq and 137,000 nuclei for single-nuclei ATAC-seq. Cross-species comparison of the retina atlas among human, monkey, mice, and chicken revealed relatively conserved and non-conserved types. Interestingly, the overall cell heterogeneity in primate retina decreases compared with that of rodent and chicken retina. Through integrative analysis, we identified 35,000 distal cis-element-gene pairs, constructed transcription factor (TF)-target regulons for more than 200 …

Exenatide As An Adjunct To Nicotine Patch For Smoking Cessation And Prevention Of Postcessation Weight Gain Among Treatment-Seeking Smokers With Pre-Diabetes And/Or Overweight: Study Protocol For A Randomised, Placebo-Controlled Clinical Trial, Luba Yammine, Christopher D Verrico, Francesco Versace, Heather E Webber, Robert Suchting, Michael F Weaver, Thomas R Kosten, Husein Alibhai, Paul M Cinciripini, Scott D Lane, Joy M Schmitz

Faculty, Staff and Student Publications

INTRODUCTION: Obesity and smoking are the two leading causes of preventable death in the USA. Unfortunately, most smokers gain weight after quitting. Postcessation weight gain (PCWG) is frequently cited as one of the primary barriers to a quit attempt and a common cause of relapse. Further, excessive PCWG may contribute to the onset or progression of metabolic conditions, such as hyperglycaemia and obesity. The efficacy of the current treatments for smoking cessation is modest, and these treatments have no clinically meaningful impact on mitigating PCWG. Here, we outline a novel approach using glucagon-like peptide 1 receptor agonists (GLP-1RA), which have …

Assessing The Feasibility Of Economic Approaches To Prevent Substance Abuse Among Adolescents: Protocol For A Mixed Methods Study, Rachel Brathwaite, Massy Mutumba, Jacqueline Nanteza, Lindsey M Filiatreau, Herbert Migadde, Phionah Namatovu, Betina Nabisere, James Mugisha, Abel Mwebembezi, Fred M Ssewamala

2020-Current year OA Pubs

BACKGROUND: Adolescent alcohol and drug use (ADU) is a significant public health challenge. Uganda, one of the poorest countries in Sub-Saharan Africa (SSA), has the second-highest rate of per capita alcohol consumption in SSA, and over one-third of Ugandan adolescents have used alcohol in their lifetime (over 50% of them engage in heavy episodic drinking). These estimates further increase in fishing villages, a key HIV-vulnerable population, where ADU is normative. However, few studies have assessed ADU among adolescents and youths living with HIV despite their increased risk for ADU and its impact on engagement in HIV care. Moreover, data on …

Shank2 Identifies A Subset Of Glycinergic Neurons Involved In Altered Nociception In An Autism Model, Florian Olde Heuvel, Sanjay Jain, Et Al.

2020-Current year OA Pubs

BACKGROUND: Autism Spectrum Disorders (ASD) patients experience disturbed nociception in the form of either hyposensitivity to pain or allodynia. A substantial amount of processing of somatosensory and nociceptive stimulus takes place in the dorsal spinal cord. However, many of these circuits are not very well understood in the context of nociceptive processing in ASD.

METHODS: We have used a Shank2

RESULTS: We determined that Shank2

LIMITATIONS: Our investigation is limited to male mice, in agreement with the higher representation of ASD in males; therefore, caution should be applied to extrapolate the findings to females. Furthermore, ASD is characterized by extensive …

Aggression And Mao-A Gene, Sacheta Sudhendra Kulkarni, Shilpa Sam S, Kishor Manohar Rao, Abhijith Devaraju

International Journal of Health and Allied Sciences

No abstract provided.

Rare Event Of Intraoral Kinking Of Endotracheal Tube Upon Prone Positioning In A Patient Undergoing Posterior Fossa Surgery, Sonali Turki, Amiya K. Barik, Amit Sharma, Abhishek Arya

International Journal of Health and Allied Sciences

Prone position is commonly employed for many surgical procedures including neurosurgeries, spine surgeries, urological procedures, and in refractory ARDS patients. An endotracheal tube is a conduit to provide a secured airway to the patient. But in case of any equipment failure, it can cause catastrophic events. Intra-oral kinking is a rarer event. It can pose a major troubleshooting standstill owing to the inaccessible view of the kinked portion and the rarity of its occurrence to cross the clinician’s mind in the emergency scenario. We thus report this as the first such case of intraoral kinking against the soft palate in …

Treatment Burden, Not Health Risk Attitude Associated With Adherence In Patients With Mental Illness In South India, Dushad Ram, Neethu Benny, Shruthy Kv

International Journal of Health and Allied Sciences

Background: Attitude towards health risks and treatment burden may mediate treatment adherence in therapeutic care. There is a paucity of study examining the levels and relationships of these variables in patients with mental illness. Objective: This study was conducted to know the relationships of health risk attitude & treatment burden and medication adherence in patients with mental illness. Settings and design: Cross-sectional, Hospital-based study. Methods and material: One hundred seventy consecutive participants in remission of mental illness were recruited. The patient's details were assessed with Sociodemographic proforma while attitude towards health risk was assessed with Health-Risk Attitude Scale (HRAS). To …

Perceived Adequacy Of Training And Identification Of Barriers To Choosing Academic Faculty Positions Among Psychiatry Postgraduate Students In India, Raviteja Innamuri, Ambuja Dacha, Rajendhar Soorinedu, Siva Kumar Chennam Setty, Kishor Manohar Rao

International Journal of Health and Allied Sciences

The increasing burden of psychiatric morbidity will proportionately increase the need for teachers of psychiatry in medical colleges. There are no studies on the current postgraduates’ perception about taking up faculty positions. We conducted an online cross-sectional study among 101 postgraduates using self-reporting questionnaires from October 2021 to November 2021. Majority were female, in 25-30 years age group, studying final year in private medical college. They willing to consider teaching positions and expressed interest in training programs. Significant facilitators and barriers to taking up faculty posts included interest in private practice, politics and vacancies available in place of interest.

Effect Of Fenugreek And Curry Leaves Powder On Dyslipidemia- A Randomized Controlled Pilot Study, Syeda Farha S, Shivani Agarwal, Vanitha Reddy P

International Journal of Health and Allied Sciences

Background: Dyslipidemias, a disorder of lipid metabolism, is widely established as an independent major and modifiable risk factor of cardiovascular disease (CVD). The conditions are common worldwide and a leading cause of death in India, and has even riven the age bar swaying in young people too. The significant effect of an increase in dyslipidemias depends on diabetes and hypertension. Nutraceuticals, derived from food sources serve as an alternative therapy for the management of dyslipidemia. India is home to multitudinous medicinal plants, of which many remain underutilized. Murraya Koenigii (curry leaf) and Trigonella foenum-graecum (fenugreek leaves) are well-proven as good …

Noninvasive Continuous Monitoring To Improve Outcome Of Preeclamptic Women Undergoing Spinal Anesthesia For Cesarean Section, Andrea M. Regan, Molly Amin, Josue Brainin Md

Department of Health Sciences Faculty Proceedings, Presentations, Posters, Speeches, Lectures, etc.

Spinal induced hypotension is a common side effect and occurs in up to 33% of patients. Preeclamptic women have a high risk of severe hypotension related to spinal anesthesia while undergoing cesarean section Hypotension, short or cumulative episodes, increase nausea and vomiting in parturient and can potentially result in fetal acidosis, hypoxic-ischemic encephalopathy(HIE), and lower Apgar scores. The recommend standard of care is a minimum of five-minute interval blood pressure monitoring which risks late detection and treatment of hypotension. ClearSight® noninvasive continuous hemodynamic monitoring decreases the risk of hypotension-associated complications in mother and fetus and improves maternal nausea and vomiting …

Obstetric Treatment Of Post Dural Puncture Headaches (Pdph): Less Invasive Alternatives To Epidural Blood Patches (Ebp), Andrea M. Regan, Molly Amin, Josue Brainin Md, Sanjeev Patel Md

Department of Health Sciences Faculty Proceedings, Presentations, Posters, Speeches, Lectures, etc.

Neuraxial labor analgesia for vaginal delivery or cesarean section is performed in more than 71% of women in the United States. Postdural puncture headache(PDPH) is a relatively common complication of neuraxial anesthesia. Epidural blood patch (EBP) is considered the gold standard treatment, and although EBP is a highly effective intervention, it is not without risk. There is growing evidence that less invasive alternative treatments, such as combined use of atropine and neostigmine have effectively relieved PDPH where traditional, conservative methods have failed. The goal is to discover the best method in preventing PDPH and less invasive treatment alternatives compared to …

Investigating Interpersonal And Community Drivers Of Taenia Solium Prevention To Reduce Acquired Seizure Disorders In Northern Peru: An Analysis Of Social Networks, Social Capital, And Community-Identified Barriers And Facilitators, Angela Gayle Spencer

Dissertations and Theses

Background: In Northern Peru and other low- and middle-income countries (LMICs) worldwide, the Taenia solium parasite causes an estimated 30% of acquired epilepsy -- an entirely preventable disease burden. Sanitation development and pork production regulation would reduce infection risk in endemic communities, but large-scale systemic improvements are not likely to occur in the near future. In the meantime, communities can reduce infection risk by adopting protective behaviors. Social networks can provide role modeling and support for health-promoting behaviors, and deliver social capital in the form of trusting relationships, norms of reciprocity, and information exchange in support of T. solium control. …

Potassium-Incorporated Titanium Oxide Nanoparticles Modulate Human Dendritic Cell Immune Response To Mycobacterium Leprae, Sam Warren, So Yoon Lee, Jose Barragan, Piya Kositangool, Hatsuko Yoshikubo, Jorge Cervantes

HPD Articles

The two polar clinical forms of leprosy, termed tuberculoid and lepromatous, have polarized cellular immune responses with complex immunological distinctions. The predominance of DCs in tuberculoid leprosy has been reported, while the lepromatous pattern of illness is associated with weak activation of local populations of DCs. TiO2 nanoparticles have previously been shown to induce maturation of these cells, leading to an inflammatory response similar to adjuvant usage in vaccine administration. We aimed to evaluate the effect of potassium-incorporated Ti oxide nanostructures, namely KTiOxs, in the response of human monocyte-derived DCs to live M. leprae. Human monocytic cell line dual THP-1, …

Geospatial Analysis Of Opioid Dispensing Patterns In California: A 2021 Real-World Study, Hongxia Lu, Jianwei Zheng, Yun Wang

Pharmacy Faculty Articles and Research

The misuse and abuse of opioids has become a serious public health threat in the United States. The state of California has been hit particularly hard by the opioid epidemic, with a noticeable increase in opioid-related fatalities and hospitalizations. This brief report paper aims to contribute to the growing literature by conducting a geospatial analysis of opioid dispensing patterns in California in 2021. The primary objective was to identify areas characterized by high-risk opioid dispending patterns and explore possible contributing factors. This retrospective study analyzed data from over 7 million records of opioid and benzodiazepine prescriptions dispensed by outpatient pharmacies …

Motor Assessment With The Stega Ipad App To Measure Handwriting In Children, Benjamin A. Philip, Fuhai Li, Elizabeth Hawkins-Chernof, Ling Chen, Victoria Swamidass, Igor Zwir

School of Medicine Publications

Importance: Handwriting and the fine motor control (hand and fingers) underlying it are key indicators of numerous motor disorders, especially among children. However, current assessment methods are expensive, slow, and subjective, leading to a lack of knowledge about the relationship between handwriting and motor control.

Objective: To develop and validate the iPad precision drawing app Standardized Tracing Evaluation and Grapheme Assessment (STEGA) to enable rapid quantitative assessment of fine motor control and handwriting.

Design: Cross-sectional, single-arm observational study.

Setting: Academic research institution.

Participants: Fifty-seven typically developing right-handed children ages 9 to 12 yr with knowledge …

Relative And Quantitative Characterization Of The Bovine Bacterial Ocular Surface Microbiome In The Context Of Suspected Ocular Squamous Cell Carcinoma, Hannah B. Gafen, Chin-Chi Liu, Nikole E. Ineck, Clare M. Scully, Melanie A. Mironovich, Lauren Guarneri, Christopher M. Taylor, Meng Luo, Marina L. Leis, Erin M. Scott, Renee T. Carter, Andrew C. Lewin

School of Medicine Faculty Publications

The ocular surface microbiome is altered in certain disease states. The aim of this study was to characterize the bovine bacterial ocular surface microbiome (BBOSM) in the context of ocular squamous cell carcinoma (OSCC). The conjunctiva of normal (n = 28) and OSCC (n = 10) eyes of cows aged 2 to 13 years from two farms in Louisiana and Wyoming were sampled using individual sterile swabs. DNA extraction followed by 16S ribosomal ribonucleic acid (rRNA) gene sequencing and real-time polymerase chain reaction (RT-PCR) were performed to, respectively, assess the relative and absolute BBOSM. Discriminant analysis (DA) was performed using …

Disparities In Violent Fatal Injury Among Racial And Ethnic Minorities, 2009–2019: A Portfolio Analysis Of United States—National Institutes Of Health, Maria-Isabel Roldós, Tilda Farhat, Marcia M. Gómez

Publications and Research

The excess mortality burden due to violent fatal injuries is an urgent public health issue for adolescents and young adults, especially those from racial and ethnic minority populations. We examined the research portfolio of the United States National Institutes of Health (NIH) related to violent fatal injuries between 2009 and 2019 to focus on adolescents and young adults from NIH-designated populations experiencing health disparities and to identify trends and research gaps. We analyzed funded projects by populations covered, geographic location of the study population, type of research (etiology, intervention, methodology), type of determinants, and publications generated. In 10 years, NIH …

Targeting Brd4 In The Treatment Of Pleural Fibrosis, Joy Adewumi

Biotechnology Theses

Pleural fibrosis (PF) is a respiratory disorder that refers to the thickening and scarring of the pleura. Currently, there is a lack of pharmaceutic treatment options for PF. Pleural mesothelial to mesenchymal transition (MesoMT) is a critical process that contributes to the development of PF. Bromodomain-containing protein 4 (BRD4), a transcriptional and epigenetic regulator, has recently been implicated in a wide range of lung injuries. However, whether BRD4 is involved in regulating MesoMT and the development of PF remains unclear and was explored in this study. Primary human pleural mesothelial cells (HPMCs) were used to test the role of BRD4 …

Apoe4, Age, And Sex Regulate Respiratory Plasticity Elicited By Acute Intermittent Hypercapnic-Hypoxia, Jayakrishnan Nair, Joseph F. Welch, Alexandria B. Marciante, Tingting Hou, Qing Lu, Emily J. Fox, Gordon S. Mitchell

Department of Physical Therapy Faculty Papers

Rational

Acute intermittent hypoxia (AIH) shows promise for enhancing motor recovery in chronic spinal cord injuries and neurodegenerative diseases. However, human trials of AIH have reported significant variability in individual responses.

Objectives

Identify individual factors (eg, genetics, age, and sex) that determine response magnitude of healthy adults to an optimized AIH protocol, acute intermittent hypercapnic-hypoxia (AIHH).

Methods

In 17 healthy individuals (age = 27 ± 5 yr), associations between individual factors and changes in the magnitude of AIHH (15, 1-min O2 = 9.5%, CO2 = 5% episodes) induced changes in diaphragm motor-evoked potential (MEP) amplitude and inspiratory mouth occlusion pressures …

Top 10 Things To Know About Falls In Older Adults, Alexander W. Zirulnik, Shan Liu

Journal of Geriatric Emergency Medicine

No abstract provided.

Reasons For Transfer And Subsequent Outcomes Among Patients Undergoing Elective Spine Surgery At An Orthopedic Specialty Hospital, Tristan B. Fried, Yunsoo Lee, Jeremy C. Heard, Nicholas S. Siegel, Tariq Z. Issa, Mark J. Lambrechts, Caroline Zaworski, Jasmine Wang, Taylor D'Amore, Amit Syal, Charles Lawall, John J. Mangan, Jose A. Canseco, Barrett I. Woods, Alan S. Hilibrand, Alex R. Vaccaro, Christopher K. Kepler, Gregory D. Schroeder

Rothman Institute Papers

Objective:

To evaluate the reasons for transfer as well as the 90-day outcomes of patients who were transferred from a high-volume orthopedic specialty hospital (OSH) following elective spine surgery.

Materials and Methods:

All patients admitted to a single OSH for elective spine surgery from 2014 to 2021 were retrospectively identified. Ninety-day complications, readmissions, revisions, and mortality events were collected and a 3:1 propensity match was conducted.

Results:

Thirty-five (1.5%) of 2351 spine patients were transferred, most commonly for arrhythmia (n = 7; 20%). Thirty-three transferred patients were matched to 99 who were not transferred, and groups had similar rates …

Asymmetric Event-Related Potential Priming Effects Between English Letters And American Sign Language Fingerspelling Fonts, Zed Sevcikova Sehyr, Katherine J. Midgley, Karen Emmory, Phillip J. Holcomb

Communication Sciences and Disorders Faculty Articles and Research

Letter recognition plays an important role in reading and follows different phases of processing, from early visual feature detection to the access of abstract letter representations. Deaf ASL–English bilinguals experience orthography in two forms: English letters and fingerspelling. However, the neurobiological nature of fingerspelling representations, and the relationship between the two orthographies, remains unexplored. We examined the temporal dynamics of single English letter and ASL fingerspelling font processing in an unmasked priming paradigm with centrally presented targets for 200 ms preceded by 100 ms primes. Event-related brain potentials were recorded while participants performed a probe detection task. Experiment 1 examined …