Medical Sciences Commons^™

In Vivo Examination Of Peripheral Drivers Of Alzheimer’S Disease, Celso Catumbela

Dissertations & Theses (Open Access)

Alzheimer’s disease (AD) is the leading cause of dementia worldwide, and predominantly affects elderly populations. This disease is well known for its effects on the brain, but a wealth of clinical reports show that dementia can also modify, or be modified by, various peripheral and systemic processes. Yet, the pathological contribution of peripheral comorbidities to AD remains to be fully understood. In an attempt to address some knowledge gaps, we characterized the cerebral and peripheral pathology in mice with history of either liver injury or sepsis. In the former subjects, we found that even in the absence of genetic risk …

4d Dynamic Spatial Brain Networks At Rest Linked To Cognition Show Atypical Variability And Coupling In Schizophrenia, Krishna Pusuluri, Zening Fu, Robyn Miller, Godfrey Pearlson, Peter Kochunov, Theo G M Van Erp, Armin Iraji, Vince D Calhoun

Journal Articles

Despite increasing interest in the dynamics of functional brain networks, most studies focus on the changing relationships over time between spatially static networks or regions. Here we propose an approach to study dynamic spatial brain networks in human resting state functional magnetic resonance imaging (rsfMRI) data and evaluate the temporal changes in the volumes of these 4D networks. Our results show significant volumetric coupling (i.e., synchronized shrinkage and growth) between networks during the scan, that we refer to as dynamic spatial network connectivity (dSNC). We find that several features of such dynamic spatial brain networks are associated with cognition, with …

Early Cold Stored Platelet Transfusion Following Severe Injury: A Randomized Clinical Trial, Jason L Sperry, Francis X Guyette, Bedda L Rosario-Rivera, Matthew E Kutcher, Lucy Z Kornblith, Bryan A Cotton, Chad T Wilson, Kenji Inaba, Eva V Zadorozny, Laura E Vincent, Ashley M Harner, Emily T Love, Joseph E Doherty, Joseph Cuschieri, Aaron E Kornblith, Erin E Fox, Yu Bai, Marcus K Hoffman, Catherine P Seger, Jay Hudgins, Sheila Mallett-Smith, Matthew D Neal, Christine M Leeper, Philip C Spinella, Mark H Yazer, Stephen R Wisniewski, Cold Stored Platelet For Hemorrhagic Shock (Crisp-Hs) Study Group

Journal Articles

OBJECTIVE: To determine the feasibility, efficacy, and safety of early cold stored platelet transfusion compared with standard care resuscitation in patients with hemorrhagic shock.

BACKGROUND: Data demonstrating the safety and efficacy of early cold stored platelet transfusion are lacking following severe injury.

METHODS: A phase 2, multicenter, randomized, open label, clinical trial was performed at 5 US trauma centers. Injured patients at risk of large volume blood transfusion and the need for hemorrhage control procedures were enrolled and randomized. The intervention was the early transfusion of a single apheresis cold stored platelet unit, stored for up to 14 days versus …

Trends Of Methicillin-Resistant Staphylococcus Aureus Infections Among Thai Pediatric Patients, Pintip Suchartlikitwong, Nopphon Wuthinantiwong, Watsamon Jantarabenjakul, Noppadol Wacharachaisurapol, Jiratchaya Sophonphan, Tanittha Chatsuwan, Thanyawee Puthanakit

Chulalongkorn Medical Journal

Background While reductions in methicillin-resistant Staphylococcus aureus (MRSA) infections have been reported, vancomycin prescription rates have remained high.

Objectives We aimed to update trends in pediatric prevalence and antibiotic susceptibilities of MRSA infections.

Methods We conducted a retrospective study in patients aged S. aureus infections during 2016-2022 at a Thai tertiary-care hospital. MRSA was defined when resistant to cefoxitin or oxacillin MIC of >4 µg/mL. Patients with MRSA infections and their first isolates were classified into HA-MRSA or CA-MRSA based on surveillance definitions. Antibiotic susceptibilities were tested using the VITEK 2XL automated system and disk diffusion. The annual prevalence of …

Intouch Week Of July 22, 2024, New York Medical College

InTouch

• Funding Will Bolster Medical School Success for Historically Disadvantaged Students
• NYMC and Lovelace Forge Powerful Ties in Health Research
• College Enhances MEC Roadway with Improved Parking
• NYMC and TU Presents “Ninety Minutes: The Medical Magazine of the Web”
• TCDM Welcomes Class of 2028
• Student Spotlight: SOM Student David Zuckerman Awarded AMA Physicians of Tomorrow Scholarship
• Alumni Spotlight: Disparities in Femoral Fractures in Children and Adolescents

An Investigation Into Aetiology, Detection And Treatment Of Neonatal Alloimmune Thrombocytopenia, Mairead Horan

International Undergraduate Journal of Health Sciences

NAIT is a rare disorder with a similar aetiology to HDN, however unlike its erythrocyte counterpart, thrombocyte immunisation can occur within the first pregnancy. (Giouleka et al., 2023). The most common antibodies implicated are HLA-1a. (Winkelhorst et al., 2017). 2.5% of the Caucasian population are HPA-1a negative, of this population 33% are HLA-DR-B3*0101 positive increasing the risk of producing an alloantibody upon encountering the HPA-1a antigen. The maternal system becomes alloimmunised to the foreign paternal antigens of the foetus/neonate, which cross the placenta causing low platelets of the foetus. (Giouleka et al., 2023).

A third of antigen-positive neonates born to …

Bayesian Varying-Effects Vector Autoregressive Models For Inference Of Brain Connectivity Networks And Covariate Effects In Pediatric Traumatic Brain Injury, Yangfan Ren, Nathan Osborne, Christine B Peterson, Dana M Demaster, Linda Ewing-Cobbs, Marina Vannucci

Journal Articles

In this article, we develop an analytical approach for estimating brain connectivity networks that accounts for subject heterogeneity. More specifically, we consider a novel extension of a multi-subject Bayesian vector autoregressive model that estimates group-specific directed brain connectivity networks and accounts for the effects of covariates on the network edges. We adopt a flexible approach, allowing for (possibly) nonlinear effects of the covariates on edge strength via a novel Bayesian nonparametric prior that employs a weighted mixture of Gaussian processes. For posterior inference, we achieve computational scalability by implementing a variational Bayes scheme. Our approach enables simultaneous estimation of group-specific …

Development Of A Simple And Accurate Polymerase Chain Reaction Screen For Human Papillomavirus In College Students, Emily Bishop, Owen Smith, Paul E. Richardson

Journal of the South Carolina Academy of Science

Human Papillomavirus (HPV) is, according to the CDC, the most common sexually transmitted infection (STI) with many infections developing in a person's late teens or early 20’s. HPV is a nonenveloped, relatively small, icosahedral DNA virus that infects squamous epithelial cells. This infection can happen in genital, anal, and oral cavities. 90% of these infections will self-clear in two years according to the CDC. Of the 10% of infections that do not clear in two years, they could develop into carcinomas later in life. The goal of this developmental research is to create a polymerase chain reaction (PCR) that can …

Parg Is Essential For Polθ-Mediated Dna End-Joining By Removing Repressive Poly-Adp-Ribose Marks, Umeshkumar Vekariya, Leonid Minakhin, Gurushankar Chandramouly, Mrityunjay Tyagi, Tatiana Kent, Katherine Sullivan-Reed, Jessica Atkins, Douglas Ralph, Margaret Nieborowska-Skorska, Anna-Mariya Kukuyan, Hsin-Yao Tang, Richard T. Pomerantz, Tomasz Skorski

Department of Biochemistry and Molecular Biology Faculty Papers

DNA polymerase theta (Polθ)-mediated end-joining (TMEJ) repairs DNA double-strand breaks and confers resistance to genotoxic agents. How Polθ is regulated at the molecular level to exert TMEJ remains poorly characterized. We find that Polθ interacts with and is PARylated by PARP1 in a HPF1- independent manner. PARP1 recruits Polθ to the vicinity of DNA damage via PARylation dependent liquid demixing, however, PARylated Polθ cannot perform TMEJ due to its inability to bind DNA. PARG-mediated de-PARylation of Polθ reactivates its DNA binding and end-joining activities. Consistent with this, PARG is essential for TMEJ and the temporal recruitment of PARG to DNA …

Emergent Emm4 Group A Streptococcus Evidences A Survival Strategy During Interaction With Immune Effector Cells, Chioma M Odo, Luis A Vega, Piyali Mukherjee, Sruti Debroy, Anthony R Flores, Samuel A Shelburne

Journal Articles

The major gram-positive pathogen group A Streptococcus (GAS) is a model organism for studying microbial epidemics as it causes waves of infections. Since 1980, several GAS epidemics have been ascribed to the emergence of clones producing increased amounts of key virulence factors such as streptolysin O (SLO). Herein, we sought to identify mechanisms underlying our recently identified temporal clonal emergence among emm4 GAS, given that emergent strains did not produce augmented levels of virulence factors relative to historic isolates. By creating and analyzing isoallelic strains, we determined that a conserved mutation in a previously undescribed gene encoding a putative carbonic …

Prothrombin Time (Pt), Activated Partial Thromboplastin Time (Aptt), Fibrinogen, And D-Dimer In Coronavirus Disease 2019 Outcome, Fredy Wirya Atmaja, Sri Suryo Adiyanti, Diyah Kristanty, Surya Dwira, Kusmardi Kusmardi

Indonesian Journal of Medical Chemistry and Bioinformatics

COVID-19, caused by SARS-CoV-2 has been reported to be associated with coagulopathy and DIC. This study aimed to investigate the profiles and differences of PT, APTT, fibrinogen, and D-dimer in COVID- 19 outcome. This retrospective cohort was conducted at Central Laboratory Clinical Pathology Department of dr. Cipto Mangunkusumo Hospital from July – December 2020. Demographic, clinical, and laboratory data were extracted from EHR and compared between poor and good outcome. Ninety-seven subjects were confirmed positive COVID-19, 45 of whom (46.4%) were in poor outcome group, while 52 subjects (53.6%) were in good outcome group. Median of PT 11.0” (9.7-28.3), APTT …

Intouch Week Of July 8, 2024, New York Medical College

InTouch

• The 2024 Issue of Chironian is Available
• Founder's Dinner 2024
• NYMC Receives $900,000 HECap Award
• NYMC and TU Hosts “Ninety Minutes: The Medical Magazine of the Web”
• Student Spotlight: Medical Student and Aspiring Entrepreneur: Nadia Ambarsom Pursues Dual Dreams
• Alumni Spotlight: Dr. Williamson Transforms Health Care as Nurse and Public Health Advocate

Baseline Data Collections Of Lipopolysaccharide Content In 414 Herbal Extracts And Its Role In Innate Immune Activation, Vindy Tjendana Tjhin, Masataka Oda, Masashi Yamashita, Tomoko Iwaki, Yasuko Fujita, Koji Wakame, Hiroyuki Inagawa, Gen-Ichiro Soma

Journal Articles

Some herbal extracts contain relatively high amounts of lipopolysaccharide (LPS). Because orally administered LPS activates innate immunity without inducing inflammation, it plays a role as an active ingredient in herbal extracts. However, the LPS content in herbal extracts remains extensively unevaluated. This study aimed to create a database of LPS content in herbal extracts; therefore, the LPS content of 414 herbal extracts was measured and the macrophage activation potential was evaluated. The LPS content of these hot water extracts was determined using the kinetic-turbidimetric method. The LPS concentration ranged from a few ng/g to hundreds of μg/g (Standard Escherichia coli …

Sump Syndrome: The Forgotten Cause Of Painless Jaundice In The Elderly, Mark Ayoub, Amna Anees

Journal of Community Hospital Internal Medicine Perspectives

Painless jaundice is a common presentation of abdominal malignancy seen in elderly patients. While malignancy may be a common cause of obstructive jaundice in that population group, anchor bias should always be avoided. We present a case of an elderly woman who presented with painless jaundice and weight loss. She had a very remote history of cholecystitis. She was found to have Sump syndrome due to a stricture at the Choledochoduodenostomy (CDD) site. She underwent endoscopic retrograde cholangiopancreatography (ERCP) with stent placement which shortly led to resolution of her jaundice. Biopsy from the stricture site came back negative for malignancy.

A Rare Case Of Anca-Negative Rapidly Progressive Glomerulonephritis, Jerry Kenmoe, Elizabeth Mikhail, Fahimeh Talaei, Arvind Kunadi

Journal of Community Hospital Internal Medicine Perspectives

ANCA-negative rapidly progressive glomerulonephritis (RPGN) is a rare condition caused by glomerular injury in the absence of detectable antineutrophil cytoplasmic antibodies (ANCAs). While comprehensive epidemiologic data is limited, ANCAnegative RPGN is known to comprise 5-20% of all glomerulonephritis cases. We report the case of a 43-year-old male who presented to the hospital after a snowmobile accident with symptoms of general malaise along with the emergence of a new-onset rash and tea-colored urine. Further workup with CT-guided kidney biopsy confirmed the diagnosis of RPGN by revealing histopathological findings of crescentic glomerulonephritis and significant glomerular inflammation. Treatment was promptly initiated with prednisone …

Impact Of Rehab Among Stroke Patients Affecting Anxiety And Depression; Faith 4 Neurosurgical Icu, Stephanie Pigg, Stephan R Smith

Covenant Nurses Week 2024

No abstract provided.

Do Hourly Neuro Exams Lead To Sleep Deprivation And Icu Delirium: A Research Review, Toni Gafford

Covenant Nurses Week 2024

No abstract provided.

Exploring The Functional Significance Of A Yap1 Missense Variant Of Uncertain Significance In Caenorhabditis Elegans, Nathan Jones

Theses

Polycystic ovary syndrome (PCOS) is a complex disorder with various implications, such as polycystic ovaries, visceral obesity, and increased risk of cancer. YAP1 was recently identified as a gene of interest in the development of PCOS. Researchers have established that single nucleotide variants in YAP1 are likely to play a role in PCOS development. This project aims to provide insight into the potential impact of a YAP1 variant of uncertain significance (VUS). Studies in C. elegans have established yap-1 as a nematode ortholog for human YAP1. A YAP1 VUS was identified through ClinVar, YAP1 c.1015A>G (p.Asn339Asp). Evolutionary conservation …

Expanded-Access Use Of Elamipretide In A Patient With Membrane Protein-Associated Neurodegeneration, Jorge Patino, Anna Haertling Clearman, Lindsey Miller, Mary Kay Koenig

Journal Articles

This case report presents a progressively declining 17-year-old patient with membrane protein-associated neurodegeneration who demonstrated symptomatic improvements in her dysarthria, dysphagia, and gait, and objective improvements in her 6-minute walk test and 5 times sit-to-stand test during elamipretide treatment.

Resting State Electroencephalographic Brain Activity In Neonates Can Predict Age And Is Indicative Of Neurodevelopmental Outcome, Amir Ansari, Kirubin Pillay, Emad Arasteh, Anneleen Dereymaeker, Gabriela Schmidt Mellado, Katrien Jansen, Anderson M. Winkler, Gunnar Naulaers, Aomesh Bhatt, Sabine Van Huffel

School of Medicine Publications and Presentations

Objective: Electroencephalography (EEG) can be used to estimate neonates' biological brain age. Discrepancies between postmenstrual age and brain age, termed the brain age gap, can potentially quantify maturational deviation. Existing brain age EEG models are not well suited to clinical cot-side use for estimating neonates' brain age gap due to their dependency on relatively large data and pre-processing requirements.

Methods: We trained a deep learning model on resting state EEG data from preterm neonates with normal neurodevelopmental Bayley Scale of Infant and Toddler Development (BSID) outcomes, using substantially reduced data requirements. We subsequently tested this model in two independent datasets …