Medical Specialties Commons^™

Evolution Of Chromosome-Arm Aberrations In Breast Cancer Through Genetic Network Rewiring, Elena Kuzmin, Toby M Baker, Tom Lesluyes, Jean Monlong, Kento T Abe, Paula P Coelho, Michael Schwartz, Joseph Del Corpo, Dongmei Zou, Genevieve Morin, Alain Pacis, Yang Yang, Constanza Martinez, Jarrett Barber, Hellen Kuasne, Rui Li, Mathieu Bourgey, Anne-Marie Fortier, Peter G Davison, Atilla Omeroglu, Marie-Christine Guiot, Quaid Morris, Claudia L Kleinman, Sidong Huang, Anne-Claude Gingras, Jiannis Ragoussis, Guillaume Bourque, Peter Van Loo, Morag Park

Faculty, Staff and Student Publications

The basal breast cancer subtype is enriched for triple-negative breast cancer (TNBC) and displays consistent large chromosomal deletions. Here, we characterize evolution and maintenance of chromosome 4p (chr4p) loss in basal breast cancer. Analysis of The Cancer Genome Atlas data shows recurrent deletion of chr4p in basal breast cancer. Phylogenetic analysis of a panel of 23 primary tumor/patient-derived xenograft basal breast cancers reveals early evolution of chr4p deletion. Mechanistically we show that chr4p loss is associated with enhanced proliferation. Gene function studies identify an unknown gene, C4orf19, within chr4p, which suppresses proliferation when overexpressed-a member of the PDCD10-GCKIII kinase module …

Association Between Antenatal Vaginal Bleeding And Adverse Perinatal Outcomes In Placenta Accreta Spectrum, J Connor Mulhall, Kayla E Ireland, John J Byrne, Patrick S Ramsey, Georgia A Mccann, Jessian L Munoz

Faculty, Staff and Student Publications

Background and Objectives: Placenta accreta spectrum (PAS) disorders are placental conditions associated with significant maternal morbidity and mortality. While antenatal vaginal bleeding in the setting of PAS is common, the implications of this on overall outcomes remain unknown. Our primary objective was to identify the implications of antenatal vaginal bleeding in the setting of suspected PAS on both maternal and fetal outcomes. Materials and Methods: We performed a case-control study of patients referred to our PAS center of excellence delivered by cesarean hysterectomy from 2012 to 2022. Subsequently, antenatal vaginal bleeding episodes were quantified, and components of maternal …

An Estrogen Receptor Α-Derived Peptide Improves Glucose Homeostasis During Obesity, Wanbao Yang, Wen Jiang, Wang Liao, Hui Yan, Weiqi Ai, Quan Pan, Wesley A Brashear, Yong Xu, Ling He, Shaodong Guo

Faculty, Staff and Students Publications

Estrogen receptor α (ERα) plays a crucial role in regulating glucose and energy homeostasis during type 2 diabetes mellitus (T2DM). However, the underlying mechanisms remain incompletely understood. Here we find a ligand-independent effect of ERα on the regulation of glucose homeostasis. Deficiency of ERα in the liver impairs glucose homeostasis in male, female, and ovariectomized (OVX) female mice. Mechanistic studies reveal that ERα promotes hepatic insulin sensitivity by suppressing ubiquitination-induced IRS1 degradation. The ERα 1-280 domain mediates the ligand-independent effect of ERα on insulin sensitivity. Furthermore, we identify a peptide based on ERα 1-280 domain and find that ERα-derived peptide …

Th2 Cells Are Associated With Tumor Recurrence Following Radiation, Mohamed K Abdelhakiem, Riyue Bao, Phillip M Pifer, David Molkentine, Jessica Molkentine, Andrew Hefner, Beth Beadle, John V Heymach, Jason J Luke, Robert L Ferris, Curtis R Pickering, Jing H Wang, Ravi B Patel, Heath D Skinner

Faculty, Staff and Student Publications

The curative treatment of multiple solid tumors, including head and neck squamous cell carcinoma (HNSCC), utilizes radiation. The outcomes for HPV/p16-negative HNSCC are significantly worse than HPV/p16-positive tumors, with increased radiation resistance leading to worse locoregional recurrence (LRR) and ultimately death. This study analyzed the relationship between immune function and outcomes following radiation in HPV/p16-negative tumors to identify mechanisms of radiation resistance and prognostic immune biomarkers. A discovery cohort of 94 patients with HNSCC treated uniformly with surgery and adjuvant radiation and a validation cohort of 97 similarly treated patients were utilized. Tumor immune infiltrates were derived from RNAseq gene …

Evaluating The Effect Of Skipping Ticagrelor Doses And Need For Bolus Doses Upon Treatment Resumption Through Population Pk/Pd Simulation, Hiroyoshi Matsui, Le Thien Truc Pham, Eyob D. Adane

ONU Student Research Colloquium

Ticagrelor (Brilinta (R)) is the first reversibly binding oral P2Y12 receptor antagonist. It is used, mostly in combination with aspirin, in patients with acute coronary syndromes to reduce thrombosis. The manufacturer of ticagrelor recommends discontinuing it at least 5 days before any surgery when possible. While the effect of dose interruptions on the risk of thrombosis is not directly studied, it is important to understand the impact of skipping doses on ticagrelor's PK/PD profile for clinical-decision making. The objectives of the current study were to simulate the impact of therapy interruption on the PK/PD of ticagrelor and examine the need …

Bone Marrow Donor Recruitment Drive And Registry, Elizabeth R. Dovich

Honors Theses

Bone marrow transplants are vital for those with blood cancers and disorders, but not every ethnic group has an equal chance of finding a match. Some of the human leukocyte antigen (HLA) cell markers used to match donors and recipients are unique to certain ethnic groups, making it harder for members of those groups to find a match. This project worked to address this inequality by organizing a bone marrow registry recruitment drive on the campus of Andrews University in partnership with the NMDP registry. It encompassed the planning, promotion, and execution of the drive which took place March 5-7, …

Glycemia And Gluconeogenesis With Metformin And Liraglutide: A Randomized Trial In Youth-Onset Type 2 Diabetes, Katrina B Dietsche, Sheela N Magge, Sydney A Dixon, Faith S Davis, Andrea Krenek, Aruba Chowdhury, Lilian Mabundo, Michael Stagliano, Amber B Courville, Shanna Yang, Sara Turner, Hongyi Cai, Kannan Kasturi, Arthur S Sherman, Joon Ha, Eileen Shouppe, Mary Walter, Peter J Walter, Kong Y Chen, Robert J Brychta, Cody Peer, Yi Zeng, William Figg, Fran Cogen, D Elizabeth Estrada, Shaji Chacko, Stephanie T Chung

Children’s Nutrition Research Center Staff Publications

OBJECTIVE: Elevated rates of gluconeogenesis are an early pathogenic feature of youth-onset type 2 diabetes (Y-T2D), but targeted first-line therapies are suboptimal, especially in African American (AA) youth. We evaluated glucose-lowering mechanisms of metformin and liraglutide by measuring rates of gluconeogenesis and β-cell function after therapy in AA Y-T2D.

METHODS: In this parallel randomized clinical trial, 22 youth with Y-T2D-age 15.3 ± 2.1 years (mean ± SD), 68% female, body mass index (BMI) 40.1 ± 7.9 kg/m2, duration of diagnosis 1.8 ± 1.3 years-were randomized to metformin alone (Met) or metformin + liraglutide (Lira) (Met + Lira) and evaluated before …

A Tetravalent Nanovaccine That Inhibits Growth Of Hpv-Associated Head And Neck Carcinoma Via Dendritic And T Cell Activation, Romano Josi, Daniel E Speiser, Simone De Brot, Anne-Cathrine Vogt, Eva M Sevick-Muraca, Genrich V Tolstonog, Martin F Bachmann, Mona O Mohsen

Faculty, Staff and Student Publications

The global incidence of human papillomavirus (HPV) associated head and neck carcinoma is on the rise, in response to this a tetravalent therapeutic vaccine named Qβ-HPVag was developed. This vaccine, utilizing virus-like particles (VLPs) loaded with toll-like receptor ligands and chemically coupled to four HPV16-derived peptides, demonstrated strong anti-tumor effects in a murine head and neck cancer model. Qβ-HPVag impeded tumor progression, increased infiltration of HPV-specific T cells, and significantly improved survival. The vaccine`s efficacy was associated with immune repolarization in the tumor microenvironment, characterized by expanded activated dendritic cell subsets (cDC1, cDC2, DC3). Notably, mice responding to treatment exhibited …

Centralized Interactive Phenomics Resource: An Integrated Online Phenomics Knowledgebase For Health Data Users, Jacqueline Honerlaw, Yuk-Lam Ho, Francesca Fontin, Michael Murray, Ashley Galloway, David Heise, Keith Connatser, Laura Davies, Jeffrey Gosian, Monika Maripuri, John Russo, Rahul Sangar, Vidisha Tanukonda, Edward Zielinski, Maureen Dubreuil, Andrew J Zimolzak, Vidul A Panickan, Su-Chun Cheng, Stacey B Whitbourne, David R Gagnon, Tianxi Cai, Katherine P Liao, Rachel B Ramoni, J Michael Gaziano, Sumitra Muralidhar, Kelly Cho

Faculty, Staff and Students Publications

Objective: Development of clinical phenotypes from electronic health records (EHRs) can be resource intensive. Several phenotype libraries have been created to facilitate reuse of definitions. However, these platforms vary in target audience and utility. We describe the development of the Centralized Interactive Phenomics Resource (CIPHER) knowledgebase, a comprehensive public-facing phenotype library, which aims to facilitate clinical and health services research.

Materials and methods: The platform was designed to collect and catalog EHR-based computable phenotype algorithms from any healthcare system, scale metadata management, facilitate phenotype discovery, and allow for integration of tools and user workflows. Phenomics experts were engaged in the …

Sequential Requirements For Distinct Polθ Domains During Theta-Mediated End Joining, Carel Fijen, Lea Drogalis Beckham, Dante Terino, Yuzhen Li, Dale A Ramsden, Richard D Wood, Sylvie Doublié, Eli Rothenberg

Faculty, Staff and Student Publications

DNA polymerase θ (Polθ) plays a central role in a DNA double-strand break repair pathway termed theta-mediated end joining (TMEJ). TMEJ functions by pairing short-sequence "microhomologies" (MHs) in single-stranded DNA at each end of a break and subsequently initiating DNA synthesis. It is not known how the Polθ helicase domain (HD) and polymerase domain (PD) operate to bring together MHs and facilitate repair. To resolve these transient processes in real time, we utilized in vitro single-molecule FRET approaches and biochemical analyses. We find that the Polθ-HD mediates the initial capture of two ssDNA strands, bringing them in close proximity. The …

Human Dna Polymerase Θ Does Not Harbor Intrinsic Nuclease Activity, Denisse Carvajal-Maldonado, Karl Zahn, Ryan Jensen, Richard D Wood, Sylvie Doublié

Faculty, Staff and Student Publications

No abstract provided.

Transposable Elements Regulate Thymus Development And Function, Jean-David Larouche, Céline M Laumont, Assya Trofimov, Krystel Vincent, Leslie Hesnard, Sylvie Brochu, Caroline Côté, Juliette F Humeau, Éric Bonneil, Joel Lanoix, Chantal Durette, Patrick Gendron, Jean-Philippe Laverdure, Ellen R Richie, Sébastien Lemieux, Pierre Thibault, Claude Perreault

Faculty, Staff and Student Publications

Transposable elements (TEs) are repetitive sequences representing ~45% of the human and mouse genomes and are highly expressed by medullary thymic epithelial cells (mTECs). In this study, we investigated the role of TEs on T-cell development in the thymus. We performed multiomic analyses of TEs in human and mouse thymic cells to elucidate their role in T-cell development. We report that TE expression in the human thymus is high and shows extensive age- and cell lineage-related variations. TE expression correlates with multiple transcription factors in all cell types of the human thymus. Two cell types express particularly broad TE repertoires: …

Cdk8/Cdk19 Promotes Mitochondrial Fission Through Drp1 Phosphorylation And Can Phenotypically Suppress Pink1 Deficiency In Drosophila, Jenny Zhe Liao, Hyung-Lok Chung, Claire Shih, Kenneth Kin Lam Wong, Debdeep Dutta, Zelha Nil, Catherine Grace Burns, Oguz Kanca, Ye-Jin Park, Zhongyuan Zuo, Paul C Marcogliese, Katherine Sew, Hugo J Bellen, Esther M Verheyen

Faculty, Staff and Students Publications

Cdk8 in Drosophila is the orthologue of vertebrate CDK8 and CDK19. These proteins have been shown to modulate transcriptional control by RNA polymerase II. We found that neuronal loss of Cdk8 severely reduces fly lifespan and causes bang sensitivity. Remarkably, these defects can be rescued by expression of human CDK19, found in the cytoplasm of neurons, suggesting a non-nuclear function of CDK19/Cdk8. Here we show that Cdk8 plays a critical role in the cytoplasm, with its loss causing elongated mitochondria in both muscles and neurons. We find that endogenous GFP-tagged Cdk8 can be found in both the cytoplasm and nucleus. …

Somatic Mutations Of Esophageal Adenocarcinoma: A Comparison Between Black And White Patients, Hyeyeun Lim, Marie-Claude Gingras, Jing Zhao, Jinyoung Byun, Patricia D Castro, Spiridon Tsavachidis, Jianhong Hu, Harshavardhan Doddapaneni, Yi Han, Donna M Muzny, Richard A Gibbs, Christopher I Amos, Aaron P Thrift

Faculty, Staff and Students Publications

Esophageal adenocarcinoma is the most common histological subtype of esophageal cancer in Western countries and shows poor prognosis with rapid growth. EAC is characterized by a strong male predominance and racial disparity. EAC is up to fivefold more common among Whites than Blacks, yet Black patients with EAC have poorer survival rates. The racial disparity remains largely unknown, and there is limited knowledge of mutations in EAC regarding racial disparities. We used whole-exome sequencing to show somatic mutation profiles derived from tumor samples from 18 EAC male patients. We identified three molecular subgroups based on the pre-defined esophageal cancer-specific mutational …

Fourteen-Day Vonoprazan-Based Bismuth Quadruple Therapy For H Pylori Eradication In An Area With High Clarithromycin And Levofloxacin Resistance: A Prospective Randomized Study (Vq-Hp Trial), Nuttapat Tungtrongchitr, Phubordee Bongkotvirawan, Sarita Ratana-Amornpin, Sith Siramolpiwat, Thanee Eiamsitrakoon, Pornpen Gamnarai, Arti Wongcha-Um, Yoshio Yamaoka, Kammal Kumar Pawa, Ratha-Korn Vilaichone

Faculty, Staff and Students Publications

Potassium-competitive acid blockers (P-CABs) provide potent acid inhibition, yet studies on P-CAB-based quadruple therapy for H. pylori eradication are limited. We theorized that integrating bismuth subsalicylate into a quadruple therapy regimen could enhance eradication rates. However, data on the efficacy of vonoprazan bismuth quadruple therapy are notably scarce. Therefore, the aim of this study was to evaluate the efficacy of vonoprazan-based bismuth quadruple therapy in areas with high clarithromycin and levofloxacin resistance. This was a prospective, single-center, randomized trial conducted to compare the efficacy of 7-day and 14-day vonoprazan-based bismuth quadruple therapy for H. pylori eradication between June 1, 2021, …

Influence Of Co-Morbid Modifiable Risk Factors On Adipose-Derived Stem Cell Paracrine Factors In Burn Patients, Jared M. Robinson, Jenna Dennis, Sophia Trinh, Cameron Fontenot, Herb A. Phelan Iii, Jeffrey E. Carter, Jonathan E. Schoen, Alison A. Smith

School of Medicine Faculty Publications

56th Annual Meeting of the American Burn Association, 2024; April 9 - April 12, 2024; Chicago, IL

Testosterone Supplementation In Patients With Burn Hypermetabolism, Alexandra Dewitt, Anastasiya Ivanko, Jonathan E. Schoen, Aimee Keating, Herb A. Phelan Iii, Jeffrey E. Carter

School of Medicine Faculty Publications

56th Annual Meeting of the American Burn Association, 2024; April 9 - April 12, 2024; Chicago, IL

The Inflammatory Response Of Patients With Major Burns And Traumatic Injuries, Jared M. Robinson, Sophia Trinh, Jenna Dennis, Cameron Fontenot, Jeffrey Hobden, Jonathan E. Schoen, Herb A. Phelan Iii, Jeffrey E. Carter, Alison A. Smith

School of Medicine Faculty Publications

56th Annual Meeting of the American Burn Association, 2024; April 9 - April 12, 2024; Chicago, IL

Eye Infection Risks From Pseudomonas Aeruginosa Via Hand Soap And Eye Drops, Anna Gitter, Kristina D Mena, Karla S Mendez, Fuqing Wu, Charles P Gerba

Faculty, Staff and Student Publications

Eye infections from bacterial contamination of bulk-refillable liquid soap dispensers and artificial tear eye drops continue to occur, resulting in adverse health outcomes that include impaired vision or eye enucleation. Pseudomonas aeruginosa (P. aeruginosa), a common cause of eye infections, can grow in eye drop containers and refillable soap dispensers to high numbers. To assess the risk of eye infection, a quantitative microbial risk assessment for P. aeruginosa was conducted to predict the probability of an eye infection for two potential exposure scenarios: (i) individuals using bacteria-contaminated eye drops and (ii) contact lens wearers washing their hands with …

Surface-Functionalized Magnetic Silica-Malachite Tricomposite (Fe–M–Si Tricomposite): A Promising Adsorbent For The Removal Of Cypermethrin, Shaoyu Kong, Min Ouyang, Yi An, Wei Cao, Xiaobo Chen

Faculty, Staff and Student Publications

Surface charges of catalysts have important influences on the thermodynamics and kinetics of electrochemical reactions. Herein, we develop a modified version of the grand-canonical potential kinetics (GCP-K) method based on density functional theory (DFT) calculations to explore the effect of surface charges on reaction thermodynamics and kinetics. Using the hydrogen evolution reaction (HER) on the Pt(111) surface as an example, we show how to track the change of surface charge in a reaction and how to analyze its influence on the kinetics. Grand-canonical calculations demonstrate that the optimum hydrogen adsorption energy on Pt under the standard hydrogen electrode condition (SHE) …

Improved Data Quality And Statistical Power Of Trial-Level Event-Related Potentials With Bayesian Random-Shift Gaussian Processes, Dustin Pluta, Beniamino Hadj-Amar, Meng Li, Yongxiang Zhao, Francesco Versace, Marina Vannucci

Faculty, Staff and Student Publications

Studies of cognitive processes via electroencephalogram (EEG) recordings often analyze group-level event-related potentials (ERPs) averaged over multiple subjects and trials. This averaging procedure can obscure scientifically relevant variability across subjects and trials, but has been necessary due to the difficulties posed by inference of trial-level ERPs. We introduce the Bayesian Random Phase-Amplitude Gaussian Process (RPAGP) model, for inference of trial-level amplitude, latency, and ERP waveforms. We apply RPAGP to data from a study of ERP responses to emotionally arousing images. The model estimates of trial-specific signals are shown to greatly improve statistical power in detecting significant differences in experimental conditions …

High-Performance Cementitious Composites Containing Nanostructured Carbon Additives Made From Charred Coal Fines, Yuan Gao, Viet Hung Pham, Jennifer Weidman, Ki-Joong Kim, Richard E Spaulding, Congjun Wang, Christopher S Matranga

Faculty, Staff and Student Publications

Carbon-based nanomaterials, such as carbon nanoplatelets, graphene oxide, and carbon quantum dots, have many possible end-use applications due to their ability to impart unique mechanical, electrical, thermal, and optical properties to cement composites. Despite this potential, these materials are rarely used in the construction industry due to high material costs and limited data on performance and durability. In this study, domestic coal is used to fabricate low-cost carbon nanomaterials that can be used economically in cement formulations. A range of chemical and physical processing approaches are employed to control the size, morphology, and chemical functionalization of the carbon nanomaterial, which …

Inaccurate Diagnosis Of Diabetes Type In Youth: Prevalence, Characteristics, And Implications, Mustafa Tosur, Xiaofan Huang, Audrey S Inglis, Rebecca Schneider Aguirre, Maria J Redondo

Faculty, Staff and Students Publications

Classifying diabetes at diagnosis is crucial for disease management but increasingly difficult due to overlaps in characteristics between the commonly encountered diabetes types. We evaluated the prevalence and characteristics of youth with diabetes type that was unknown at diagnosis or was revised over time. We studied 2073 youth with new-onset diabetes (median age [IQR] = 11.4 [6.2] years; 50% male; 75% White, 21% Black, 4% other race; overall, 37% Hispanic) and compared youth with unknown versus known diabetes type, per pediatric endocrinologist diagnosis. In a longitudinal subcohort of patients with data for ≥ 3 years post-diabetes diagnosis (n = 1019), …

Linear And Nonlinear Behaviors Of The Photoreceptor Coupled Network, Ji-Jie Pang, Xiaolong Jiang, Samuel M Wu

Faculty, Staff and Students Publications

Photoreceptors are electrically coupled to one another, and the spatiotemporal properties of electrical synapses in a two-dimensional retinal network are still not well studied, because of the limitation of the single electrode or pair recording techniques which do not allow simultaneously measuring responses of multiple photoreceptors at various locations in the retina. A multiple electrode recording system is needed. In this study, we investigate the network properties of the two-dimensional rod coupled array of the salamander retina (both sexes were used) by using the newly available multiple patch electrode system that allows simultaneous recordings from up to eight cells and …

Evaluating Bone Fracture Healing Utilizing Doppler Imaging Modes, Shear Wave Elastography, X-Ray And Dual-Energy X-Ray Absorptiometry In A Rabbit Model, Priscilla Machado, Rachel Blackman, Ji-Bin Liu, Flemming Forsberg, Traci Fox

JCHP Collaborative Capstone and Research Exchange

Abstract

The healing of a bone fracture is a complex, multistage process consisting of inflammation in the local tissue, angiogenesis, callus formation, and eventually, remodeling and restoration of the bone to its original morphology. It is estimated that 5-10% of fractures do not heal properly and exhibit non-union of the fractured bone segments, with long-term complications compared to properly healed fractures. There is great clinical benefit in the ability to have early detection of impending non-union fractures, and diagnostic ultrasound can be used to image formation of the callus in a healing fracture through the use of different imaging modes. …

Design And Validation Of A Multiplex Qpcr Assay For The Diagnosis Of Bacterial Vaginosis, Morgan G. Shriver, Richard Sunday, Zi-Xuan Wang, Scott Gygax

JCHP Collaborative Capstone and Research Exchange

Abstract

Current diagnostic criteria and treatment options for bacterial vaginosis (BV) commonly result in the misdiagnosis and/or mistreatment of the active infection, as well as subsequent reinfection with BV. This project aims to design and validate a multiplex qPCR assay as a means to accurately detect and quantify populations of dysbiotic Gardnerella vaginalis, Atopobium vaginae, Megasphaera Type 1 & Type 2, Bacterial vaginosis-associated bacterium 2 (BVAB2), as well as the commensal Lactobacillus crispatus, Lactobacillus jensenii, and Lactobacillus gasseri in vaginal specimen for the accurate diagnosis of BV. As these bacterial species are generally unable to be …

Inter-Institutional Analysis Of Skin Of Color Representation In Dermatological Lecture Content At Md And Do Medical Schools, Oluwafunke Oluwatosin Ogunremi, Blake Fredericksen, John Komas, Sana Ismail, Siri Knutsen-Larson Md, Valeriy Kozmenko Md, Afia Albin Do

Aesculapius Journal (Health Sciences & Medicine)

The purpose of this study was to analyze the lecture materials provided in medical schools through a diversity lens. Skin pathologies manifest distinctively on various shades of skin and physicians must be equipped with the proper knowledge to identify and diagnose these conditions accurately and promptly. For most medical students, images in prominent textbooks and lecture slides are their first encounter with disease presentations. Therefore, it is important to analyze the diversity of skin tones in the content that is being delivered. Specifically, the use of images featuring darker skin tones compared to those depicting lighter skin tones. This study …

Emerging Variants Develop Total Escape From Potent Monoclonal Antibodies Induced By Ba4/5 Infection, Chang Liu, Raksha Das, Aiste Dijokaite-Guraliuc, Daming Zhou, Alexander J Mentzer, Piyada Supasa, Muneeswaran Selvaraj, Helen M E Duyvesteyn, Thomas G Ritter, Nigel Temperton, Paul Klenerman, Susanna J Dunachie, Neil G Paterson, Mark A Williams, David R Hall, Elizabeth E Fry, Juthathip Mongkolsapaya, Jingshan Ren, David I Stuart, Gavin R Screaton

Faculty, Staff and Student Publications

The rapid evolution of SARS-CoV-2 is driven in part by a need to evade the antibody response in the face of high levels of immunity. Here, we isolate spike (S) binding monoclonal antibodies (mAbs) from vaccinees who suffered vaccine break-through infections with Omicron sub lineages BA.4 or BA.5. Twenty eight potent antibodies are isolated and characterised functionally, and in some cases structurally. Since the emergence of BA.4/5, SARS-CoV-2 has continued to accrue mutations in the S protein, to understand this we characterize neutralization of a large panel of variants and demonstrate a steady attrition of neutralization by the panel of …

Syntaxin 3 Is Haplosufficient For Long-Term Photoreceptor Survival In The Mouse Retina, Tahira Jabeen, Muhammad Shahid Khan, Sana Javaid, Waqar Azeem, Rabia Ayoub, Martin Motola

Faculty, Staff and Student Publications

Here, synthesis and thorough characterization of β-NaFeO2 nanoparticles utilizing a co-precipitation technique is presented. XRD analysis confirmed a hexagonal-phase structure of β-NaFeO2. SEM revealed well-dispersed spherical nanoparticles with an average diameter of 45 nm. The FTIR spectrum analysis revealed weak adsorption bands at 1054 cm-1 suggested metal-metal bond stretching (Fe-Na). UV-Visible spectroscopy indicates a 4.4 eV optical band gap. Colloidal stability of β-NaFeO2 was evidenced via Zeta potential (-28.5 mV) and Dynamic Light Scattering (DLS) measurements. BET analysis reveals a substantial 343.27 m2 g-1 surface area with mesoporous characteristics. Antioxidant analysis indicates efficacy comparable to standard antioxidants, while concentration-dependent antibacterial …

Jennifer A Wargo, Nadim J Ajami, And Carrie R Daniel-Macdougall, Jennifer A Wargo, Nadim J Ajami, Carrie R Daniel-Macdougall

Faculty, Staff and Student Publications

Dr. Jennifer A. Wargo, Dr. Nadim J. Ajami, and Dr. Carrie R. Daniel-MacDougall describe their academic and clinical work on the role of the microbiome to determine response to immunotherapies and discuss current challenges and potential needs to integrate their findings into clinical practice.