Investigative Techniques Commons^™

5-Ht Receptors: Pharmacology And Functional Selectivity, Benjamin R. Cummins, Gerald B. Billac, David E. Nichols, Charles D. Nichols

School of Medicine Faculty Publications

Serotonin 5-HT receptors were one of the first serotonin receptors to be pharmacologically characterized. In mammals, they are expressed throughout the body in nearly every cell and tissue type, with the highest density in cortical layer V of the brain. They are involved in several aspects of normal physiological processes and behaviors and have been implicated in the etiology of neuropsychiatric diseases such as schizophrenia. Atypical antipsychotics have targeted blockade of 5-HT receptors as part of their therapeutic mechanism. More recently, 5-HT receptors have come to prominence for their role as the primary target for psychedelic drugs, which activate this …

Central-Line Dressing Protocols: The Effectiveness Of A Standardized Dressing Change Protocol In Reducing Central-Line Associated Bloodstream Infections (Clabsi) In Critically Ill Patients Requiring Central Lines, Cody Jones, Melissa Marino, Ryan Mcfarland, Asia White, Tracy Mcclinton Dnp, Aprn, Agacnp-Bc, Hget-C, Ebp-C, Margaret Harvey Phd, Aprn, Acnp-Bc, Chfn, Fhrs

Doctor of Nursing Practice Projects

Purpose/Background

In the Intensive Care Units (ICU), central lines are an essential way of life. However, central lines have risks such as central line-associated bloodstream infections (CLABSI), which increase hospital stays and mortality. CLABSI significantly impacts patient outcomes in critical care, increases mortality and morbidity, increases medical costs, increases hospital-acquired infections, and reduces hospital reimbursements. Typically, antimicrobial dressing has been associated with decreased mortality and improved CLABSI rates. The scoping review will evaluate the literature and examine the effectiveness of various antimicrobial dressing strategies on CLABSI rates. This study aims to synthesize these findings to develop improved CLABSI prevention protocols …

Scoping Review Of Algorithms For Electronic Fetal Monitoring, Katherine Sabatier, Kate Fouquier Cnm, Phd, Facnm

Doctor of Nursing Practice Projects

Purpose/Background

The purpose of this scoping review is to review the use of an algorithm in evaluating continuous external fetal heart rate (FHR) monitoring in labor as opposed to clinician judgment for improved fetal outcomes, including earlier recognition of abnormal tracings (Clark et al., 2017). FHR monitoring was created to evaluate for fetal hypoxia in labor and has become standard practice (Gyllencreutz et al., 2018). One of the goals of the use of cardiotocography is to decrease hypoxia-induced fetal metabolic acidemia and neurologic injury. There are multiple options for individual or computer-based algorithms in evaluating FHR to reduce fetal acidemia …

Zonal Hepatocellular Responses To Acute Ethanol: Impacts On Mitochondrial Function And Metabolism, Matthew T. Savoca

MUSC Theses and Dissertations

Background: Ethanol (EtOH) consumption causes hepatocellular mitochondrial depolarization (mtDepo) and mitophagy. Here, the Aims were to develop techniques to characterize sublobular hepatocellular metabolism and the distribution of mtDepo and mitophagy after acute EtOH. Methods: Wildtype and GFP-LC3 transgenic mice were treated with EtOH or vehicle and administered the covalently labeling mitochondrial membrane potential (ΔΨ) reporter, MitoTracker Red (MTR), and/or the non-covalent ΔΨ reporter, rhodamine 123 (Rh123), prior to intravital imaging, liver fixation, or hepatocyte isolation. After in vivo MTR, hepatocytes were isolated and sorted. Enrichment in E-cadherin (ECAD) and cytochrome P4502E1 in periportal (PP) and pericentral (PC) hepatocytes, respectively, validated …

Perinatal Mood And Anxiety Disorders (Pmads): A Scoping Review, Christina Willis Bsn, Rn, Nia Wells Bsn, Rn, Miranda Smith Bsn, Rn, Kate Fouquier Cnm, Phd, Facnm

Doctor of Nursing Practice Projects

Purpose/Background Perinatal Mood and Anxiety Disorders (PMADs), including postpartum depression, anxiety, and psychosis, significantly impact maternal and infant health. This scoping review consolidates current literature on PMADs, emphasizing prevalence, risk factors, screening, and treatment. The primary aim is to identify research gaps and inform clinical guidelines to enhance perinatal care.

Methods A literature search followed PRISMA guidelines from August 2022 to November 2024. Databases searched included PubMed, CINAHL, Scopus, and Google Scholar, using terms such as "perinatal mood disorders" and "maternal mental health." Inclusion criteria were English-language studies from the past decade addressing PMADs during pregnancy and up to one …

Plasma Proteomic Biomarkers Of Physical Frailty In Heart Failure: A Propensity Score Matched Discovery-Based Pilot Study, Quin Denfeld, Noelle Pavlovic, Christopher Lee, Jon Jacobs, Mary Roberts Davis, Samantha Powell, Marina Gritsenko, Susan Joseph, Beth Habecker

Division of Cardiology Faculty Papers

BACKGROUND: Physical frailty is highly prevalent in heart failure (HF), but we lack an understanding of the underlying pathophysiology. Proteomic evaluation of plasma samples may elucidate potential mechanisms and biomarkers of physical frailty in HF.

OBJECTIVES: We aimed to identify plasma proteomic biomarkers that are differentially expressed between physically frail and non-physically frail adults with HF.

METHODS: This was a secondary analysis of a subset of data and plasma samples from a study of frailty among patients with New York Heart Association (NYHA) Functional Classification I-IV HF. Physical frailty was measured using the Frailty Phenotype Criteria. Propensity score matching was …

Hexasodium Fytate (Snf472 Or Csl525) Inhibits Ectopic Calcification In Various Pseudoxanthoma Elasticum And Calcinosis Cutis Animal Models, Miguel Ferrer, Maria Pérez-Ferrer, Marc Blasco, Ida Jacobs, Qiaoli Li, Olivier Vanakker, Lisa Dangreau, Andrea López, Gianluca Malagraba, Firas Bassissi, Joan Perelló, Carolina Salcedo

Department of Biochemistry and Molecular Biology Faculty Papers

Background/Objectives: Ectopic calcification is a pathological condition characterized by the mineralization of soft tissues due to the deposition of calcium phosphate crystals. Hexasodium fytate (CSL525, previously known as SNF472) is a crystallization inhibitor being developed for the treatment of ectopic calcification-related disorders. Our aim was to investigate CSL525 for the treatment of soft-tissue calcification disorders in animal models of pseudoxanthoma elasticum and calcinosis cutis. Methods: In a first study, abcc6^-/- zebrafish larvae were exposed to 1 mM CSL525 for 7 days or kept under the same conditions without CSL525, and spinal mineralization was quantified. In a second study, abcc6 …

Editorial: Adverse And Toxic Effects Of Childhood Cancer Treatments, Volume Ii, Antonio Ruggiero, Roderick Skinner, Pinki Prasad

School of Medicine Faculty Publications

No abstract provided.

Impact Of Cde Referral On A1c Control In Adult Type 2 Dm Patients., Alivia Watts Bsn, Rn, Yesica Sanchez Bsn, Rn, Morgan Hilliard Bsn, Rn, Laura Reed Dnp, Fnp-Bc

Doctor of Nursing Practice Projects

Type II Diabetes Mellitus is a chronic health condition impacting many adults in Tennessee. Certified Diabetic Educators (CDEs) are specifically trained in educating and addressing the health care needs of patients with diagnoses of Type I or Type II Diabetes. Research has shown that education conducted by CDEs leads to improved outcomes and self- care in those with diabetes (Bowen, et al., 2016, King et al., 2019). Not only are CDEs cost effective services leading to a decrease in healthcare costs, but they also aid in the improvement of hemoglobin A1C (Hgb A1C) levels and decrease complications associated with Type …

Evaluating The Effectiveness Of A Non-Pharmacological Sleep Bundle For The Prevention Of Delirium In Geriatric Patients In The Intensive Care Unit: A Scoping Review, Morgan Wilkins Bsn, Rn, Vanessa D'Amico Bsn, Rn, Alyssa Goyda Bsn, Rn, Seema Janga Bsn, Rn, Kaylin Story Bsn, Rn, Tracy Mcclinton Dnp, Aprn, Agacnp-Bc

Doctor of Nursing Practice Projects

Purpose/Background

Delirium is an acute disorder yielding cognitive deficits, such as disruption in attention and awareness. It impacts approximately 50% of individuals over the age of 65 who are admitted to the hospital and is prevalent with patients in the intensive care unit (ICU). ICU delirium is associated with adverse outcomes, including higher morbidity, prolonged hospital stays, and chronic neurocognitive deficits. Research demonstrates that implementation of a non-pharmacological sleep bundle can reduce the overall occurrence of delirium. The purpose of this scoping review is to examine the efficacy of a non-pharmacological sleep bundle on the incidence of ICU delirium in …

3d-Printed Organ-Realistic Phantoms To Verify Quantitative Spect/Ct Accuracy For 177lu-Psma-617 Treatment Planning, Lydia J. Wilson, Sara Belko, Eric L. Gingold, Shuying Wan, Rachel Monane, Robert S. Pugliese, Firas Mourtada

Department of Radiation Oncology Faculty Papers

Background/Objectives: Accurate patient-specific dosimetry is essential for optimizing radiopharmaceutical therapy (RPT), but current tools lack validation in clinically realistic conditions. This work aimed to develop a workflow for designing and fabricating patient-derived, organ-realistic RPT phantoms and evaluate their feasibility for commissioning patient-specific RPT radioactivity quantification. Methods: We used computed tomographic (CT) and magnetic resonance (MR) imaging of representative patients, computer-aided design, and in-house 3D printing technology to design and fabricate anthropomorphic kidney and parotid phantoms with realistic organ spacing, anatomically correct orientation, and surrounding tissue heterogeneities. We evaluated the fabrication process via geometric verification (i.e., volume comparisons) and leak testing …

Molecular Subtyping Of Hypertensive Disorders Of Pregnancy, Michal Elovitz, Elaine Gee, Nathaniel Delaney-Busch, Alison Moe, Mitsu Reddy, Arkady Khodursky, Johnny La, Ilma Abbas, Kay Mekaru, Hunter Collins, Farooq Siddiqui, Rory Nolan, Rupsa Boelig, Daniel Kiefer, Pamela Simmons, George Saade, Antonio Saad, Ebony Carter, Thomas Mcelrath, Stephen Quake, Mark Depristo, Carrie Haverty, Manfred Lee, Eugeni Namsaraev, Vincenzo Berghella, Ai-Ris Collier, Antonia Frolova, Esther Park-Hwang, Luis Pacheco, Elizabeth Sutton, Maneesh Jain, Kara Rood, William A Grobman, Joseph Biggio, Cynthia Gyamfi-Bannerman, Arun Jeyabalan, Morten Rasmussen

Department of Obstetrics and Gynecology Faculty Papers

Hypertensive disorders of pregnancy (HDP), including preeclampsia, affect 1 in 6 pregnancies, are major contributors to maternal morbidity and mortality, yet lack precision medicine strategies. Analyzing transcriptomic data from a prospectively-collected diverse cohort (n = 9102), this study reveals distinct RNA subtypes in maternal blood, reclassifying clinical HDP phenotypes like early/late-onset preeclampsia. The placental gene PAPPA2 strongly predicts the most severe forms of preeclampsia in individuals without pre-existing high risk factors, months before symptoms, and its overexpression correlates with earlier delivery in a dose-dependent manner. Further, molecular subtypes characterized by immune genes are upregulated in less severe forms of HDP. …

Methods For Community-Engaged Data Collection And Analysis In Implementation Research, Lawrence A. Palinkas, Benjamin Springgate, Leopoldo J. Cabassa, Michelle Shin, Samantha Garcia, Benjamin F. Crabtree, Jennifer Tsui

School of Medicine Faculty Publications

BACKGROUND: Community engagement is widely recognized as critical to successful and equitable implementation of evidence-based practices, programs, and policies. However, there are no clear guidelines for community involvement in data collection and analysis in implementation research. METHODS: We describe three specific methods for engaging community members in data collection and analysis: concept mapping, rapid ethnographic assessment, and Photovoice. Common elements are identified from a case study of each method: 1) selection and adaptation of evidence-based strategies for improving adolescent HPV vaccine initiation rates in disadvantaged communities, 2) strategies for implementing medication for opioid use disorders among low-income Medicaid enrollees during …

The Effectiveness Of Gad-7 Screening In High School Students, Tamara L. Smith, Allison Darnell, Margaret Harvey, Phd, Acnp-Bc, Chfn, Jacqueline Sharp Dnp, Aprn, Pmhp-Bc

Doctor of Nursing Practice Projects

Purpose/Background

Adolescent mental health is a growing concern, with anxiety disorders being particularly prevalent among high school students. Left untreated, anxiety can significantly impact academic performance, social functioning, and long-term mental health. The COVID-19 pandemic exacerbated these challenges, highlighting the critical need for effective screening and intervention strategies. The Generalized Anxiety Disorder 7-item scale (GAD-7) is a validated tool for identifying anxiety disorders, yet its application in high school settings is limited. This scoping review explores the effectiveness of GAD-7 in increasing mental health referrals and improving anxiety outcomes in high school students.

Methods

A comprehensive search was conducted across …

Evaluating The Efficacy Of Predischarge Referrals In Preventing Emergency Mental Health Hospital Readmissions: A Scoping Review, Pretia Carpenter Bsn, Rn, Stephanie Mays Bsn, Rn, Jacqueline Sharp Dnp, Aprn, Pmhp-Bc, Sharon H. Little, Dnp, Fnp-Bc, Aprn

Doctor of Nursing Practice Projects

Background

Emergency mental health hospital readmissions present significant challenges to healthcare systems, often resulting in increased costs, prolonged hospital stays, and poor patient outcomes. Continuity of care through predischarge referrals to outpatient mental health services, psychosocial support, and community resources has been proposed as a strategy to reduce readmissions. However, the effectiveness of these interventions remains inconsistent across different populations and settings.

Objective

This scoping review aims to evaluate the effectiveness of predischarge referrals in reducing 30-day emergency mental health hospital readmissions, identify key components of successful programs, and assess the influence of demographic factors on readmission rates.

Methods

A …

Evaluating Artifact-Free Four-Dimensional Computer Tomography With 16 Cm Detector Array, Inhwan Yeo, Wei Nie, Jiajin Fan, Mindy Joo, Michael Correa, Qianyi Xu

Department of Radiation Oncology Faculty Papers

PURPOSE: To evaluate a 16 cm-array axial four-dimensional computer tomography (4DCT) in comparison with a 4 cm-array 4DCT in the presence of respiration irregularity.

METHOD: Ten traces of lung tumor motion from CyberKnife treatments were imported to move the lung cylinder, containing a spherical target, of a phantom. Images were acquired for the lung that moved to each of the 10-positions/phases (1) step-wisely by nominal helical scan at each movement (ground truth), (2) continuously by 4D scan with the 16 cm array, and (3) the same with the 4 cm array, involving table shift. Irregularities, consisting of baseline shift and/or …

The Epidemiology Of Sports And Recreation Related Toe Fractures In The United States, Dogerno Norceide, Gabriel I. Onor, Oluwatomi Akingbola, William Justice, Nana F. Amponsah, Abimbola Okulaja, Ifeanyichukwu Onor, Michael Okoronkwo, Chibuikem Nwizu, David Pedowitz

School of Medicine Faculty Publications

BACKGROUND: Fractures of the toes are among the most frequently diagnosed lower extremity fractures. In sports, toe fractures may present after diverse mechanisms of injury, varying severity, and varying implications for management. This study aimed to discern trends in toe fractures presenting to US emergency departments (EDs) particularly in association with sports and recreational activities. An additional aim of the study was to identify if rates of toe fracture presentation significantly decreased during the year 2020 at the height of the COVID-19 pandemic. METHODS: We queried the National Electronic Injury Surveillance System (NEISS) database to identify toe fractures presented to …

Larotrectinib Compared With Real-World Non-Tropomyosin Receptor Kinase Inhibitor Therapies In Patients With Tropomyosin Receptor Kinase Fusion Cancer, Marcia S. Brose, C. Benedikt Westphalen, Xiaoyun Pan, Vadim Bernard-Gauthier, Milena Kurtinecz, Helen Guo, Virginie Aris, Neil R. Brett, Abdelali Majdi, Vivek Subbiah, Nathan A. Pennell, Kenneth L. Kehl, Alexander Drilon

Kimmel Cancer Center Faculty Papers

PURPOSE: Neurotrophic tyrosine receptor kinase gene fusions are oncogenic drivers of various solid tumors. Larotrectinib is a highly selective tropomyosin receptor kinase (TRK) inhibitor approved for patients with TRK fusion cancer on the basis of single-arm trials. This study was a matched comparative effectiveness study of larotrectinib in clinical trials versus standard of care (SOC) in the real-world (RW) setting.

METHODS: Adult patients with advanced/metastatic TRK fusion non-small cell lung cancer, colorectal cancer, soft tissue sarcoma, thyroid cancer, or salivary gland carcinoma were included. Deduplicated data from RW patients were from US and ex-US data sources. Patients in the larotrectinib …

Vpac Receptor Positivity In Comparison With Mp-Mri In The Diagnosis Of Prostate Cancer: A Preliminary Study, Nishant Setya, Shridhar Ghagane, Rajendra Nerli, Ashwin Bokare, Mathew Thakur, Leonard Gomella

Kimmel Cancer Center Faculty Papers

Objective: The study aimed to prospectively evaluate the feasibility of diagnosing PCa using voided urine samples and by targeting the genomic VPAC (vasoactive intestinal peptide and pituitary adenylate cyclase-activating peptide) receptors in comparison with multiparametric magnetic resonance imaging (mp-MRI) in male patients (≥40 years of age) with lower urinary tract symptoms and having a serum PSA of >4 but < 15 ng/ml.

Patients and methods: Male patients attending urological services ≥40 years old, with lower urinary tract symptoms and serum PSA levels of >4 but < 15 ng/ml formed the study group. Voided urine samples were collected to target VPAC receptors on malignant cells. All patients underwent mp-MRI. A 12-core transrectal ultrasound-guided prostate biopsy was performed in all, and the results were compared for the diagnosis of PCa.

Results: A total of 61 patients with a median age of 65.33 ± 8.11 years and with a …

Smart Radiology: Using Artificial Intelligence For Better Imaging Outcomes, Jordan Watts, Jeffrey Larson, Kasi Gorli, Alberto Coustasse

Management Faculty Research

We hypothesize that the use of Artificial Intelligence (AI) in radiology improves the quality of care by increasing diagnostic accuracy, reducing interpretation time, and enhancing clinical workflow efficiency by minimizing imaging acquisition errors.