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Articles 451 - 480 of 1225
Full-Text Articles in Chemicals and Drugs
Remodeling Anaplastic Thyroid Cancer's Aggressive Profile And Metabolic Signature By Natural Alkaloid Berberine, Tara Elizabeth Jarboe
Remodeling Anaplastic Thyroid Cancer's Aggressive Profile And Metabolic Signature By Natural Alkaloid Berberine, Tara Elizabeth Jarboe
NYMC Student Theses and Dissertations
Anaplastic thyroid cancer is a rare, fatal cancer with a five-year survival of 4%. Universally diagnosed at stage IV, anaplastic thyroid cancer is characterized by its lack of differentiation, rapid proliferative rate, highly inflammatory tumor microenvironment, and metabolic dysregulation. Refractory to all established therapies, anaplastic thyroid cancer requires a novel therapeutic approach that targets all of these drivers of anaplastic thyroid cancer carcinogenesis. We propose natural alkaloid berberine as a therapeutic with multitarget efficacy to alter mitochondrial metabolism and reprogram anaplastic thyroid cancer’s aggressive phenotype. Our in vitro model uses monocyte cell line U937, anaplastic thyroid cancer cell lines T238 …
The Effect Of Ethanol Treatment On The Protein Content Of Difi Exosomes, Kenzie Rushing
The Effect Of Ethanol Treatment On The Protein Content Of Difi Exosomes, Kenzie Rushing
[Archive] Belmont University Research Symposium (BURS)
Colorectal cancer (CRC) is the second most common cause of cancer death in the United States in both men and women combined, second only to lung cancer.1 CRC metastasis is the primary cause of mortality largely due to therapy resistant cancer cells.2 Therefore, detection before metastasis is of great importance and could potentially lead to earlier detection and decreased mortality. Extracellular vesicles (EVs), including exosomes, are lipid bound vesicles secreted by cells3 that are involved in cell-cell communication and have been found to promote CRC progression and metastasis.4 The proteome of exosomes is thought to reflect that of the originating …
Single Dual-Specific Anti-Pd-L1/Tgf-Β Antibody Synergizes With Chemotherapy As Neoadjuvant Treatment For Pancreatic Ductal Adenocarcinoma: A Preclinical Experimental Study, Haoxiang Zhang, Jiaoshun Chen, Jianwei Bai, Jing Zhang, Shaoyi Huang, Liang Zeng, Pengfei Zhou, Qiang Shen, Tao Yin
Single Dual-Specific Anti-Pd-L1/Tgf-Β Antibody Synergizes With Chemotherapy As Neoadjuvant Treatment For Pancreatic Ductal Adenocarcinoma: A Preclinical Experimental Study, Haoxiang Zhang, Jiaoshun Chen, Jianwei Bai, Jing Zhang, Shaoyi Huang, Liang Zeng, Pengfei Zhou, Qiang Shen, Tao Yin
School of Medicine Faculty Publications
AIMS: Chemotherapy resistance is an important cause of neoadjuvant therapy failure in pancreatic ductal adenocarcinoma (PDAC). BiTP is a single antibody that can simultaneously and dually target transforming growth factor-beta (TGF-β) and programmed cell death 1 ligand 1 (PD-L1). We attempted in this study to investigate the efficacy of BiTP in combination with first-line chemotherapy in PDAC. METHODS: Preclinical assessments of BiTP plus gemcitabine and nab-paclitaxel were completed through a resectable KPC mouse model (C57BL/6J). Spectral flow cytometry, tissue section staining, enzyme-linked immunosorbent assays, Counting Kit-8, transwell, and Western blot assays were used to investigate the synergistic effects. RESULTS: BiTP …
Alkindi Sprinkle For Pediatric Patients With Primary Adrenocortical Insufficiency: A Narrative Review, Alan D. Kaye, Munira E. Khaled, Kristin Nicole Bembenick, John Lacey, Anamika Tandon, Rucha A. Kelkar, Alyssa G. Derouen, Corrado Ballaera, Debbie Chandler, Shahab Ahmadzadeh, Sahar Shekoohi, Giustino Varrassi
Alkindi Sprinkle For Pediatric Patients With Primary Adrenocortical Insufficiency: A Narrative Review, Alan D. Kaye, Munira E. Khaled, Kristin Nicole Bembenick, John Lacey, Anamika Tandon, Rucha A. Kelkar, Alyssa G. Derouen, Corrado Ballaera, Debbie Chandler, Shahab Ahmadzadeh, Sahar Shekoohi, Giustino Varrassi
School of Medicine Faculty Publications
Adrenocortical insufficiency, also known as adrenal insufficiency (AI), is an endocrine disorder characterized by inadequate production of adrenal hormones, including glucocorticoids and mineralocorticoids (MCs). The condition can be categorized as primary, secondary, or tertiary AI, depending on the location of the defect. Classical symptoms of AI include weakness, fatigue, abdominal pain, tachycardia, hypotension, electrolyte imbalances, and hyperpigmentation. In children, the most common cause of AI is classical congenital adrenal hyperplasia, which results from a deficiency in the 21-hydroxylase enzyme. The 21-hydroxylase enzyme produces all steroids, such as cortisol and aldosterone. AI management primarily involves hormone replacement therapy, typically with oral …
A Novel Micropeptide, Slitharin, Exerts Cardioprotective Effects In Myocardial Infarction, Ahmed G. E. Ibrahim, Alessandra Ciullo, Shukuro Yamaguchi, Chang Li, Travis Antes, Xaviar Jones, Liang Li, Ramachandran Murali, Innokentiy Maslennikov, Niveda Sundararaman, Daniel Soetkamp, Eugenio Cingolani, Jennifer Van Eyk, Eduardo Marbán
A Novel Micropeptide, Slitharin, Exerts Cardioprotective Effects In Myocardial Infarction, Ahmed G. E. Ibrahim, Alessandra Ciullo, Shukuro Yamaguchi, Chang Li, Travis Antes, Xaviar Jones, Liang Li, Ramachandran Murali, Innokentiy Maslennikov, Niveda Sundararaman, Daniel Soetkamp, Eugenio Cingolani, Jennifer Van Eyk, Eduardo Marbán
Pharmacy Faculty Articles and Research
Purpose: Micropeptides are an emerging class of proteins that play critical roles in cell signaling. Here, we describe the discovery of a novel micropeptide, dubbed slitharin (Slt), in conditioned media from Cardiosphere-derived cells (CDCs), a therapeutic cardiac stromal cell type.
Experimental design: We performed mass spectrometry of peptide-enriched fractions from the conditioned media of CDCs and a therapeutically inert cell type (human dermal fibrobasts). We then evaluated the therapeutic capacity of the candidate peptide using an in vitro model of cardiomyocyte injury and a rat model of myocardial infarction.
Results: We identified a novel 24-amino acid micropeptide …
Advancing Treatment In Atopic Dermatitis: A Comprehensive Review Of Clinical Efficacy, Safety, And Comparative Insights Into Corticosteroids, Calcineurin Inhibitors, And Phosphodiesterase-4 Inhibitors As Topical Therapies, Tyler D. Hernandez, Sarah J. Aleman, Maria Bao-Loc-Trung, Michael V. Forte, William Brandt, Catherine Armstrong, Jeffrey Howard, Chizoba N. Mosieri, Shahab Ahmadzadeh, Giustino Varrassi, Sahar Shekoohi, Alan D. Kaye
Advancing Treatment In Atopic Dermatitis: A Comprehensive Review Of Clinical Efficacy, Safety, And Comparative Insights Into Corticosteroids, Calcineurin Inhibitors, And Phosphodiesterase-4 Inhibitors As Topical Therapies, Tyler D. Hernandez, Sarah J. Aleman, Maria Bao-Loc-Trung, Michael V. Forte, William Brandt, Catherine Armstrong, Jeffrey Howard, Chizoba N. Mosieri, Shahab Ahmadzadeh, Giustino Varrassi, Sahar Shekoohi, Alan D. Kaye
School of Medicine Faculty Publications
Atopic dermatitis (AD) is a pervasive and multifaceted dermatological disorder causing daily distress to afflicted individuals worldwide. This comprehensive review synthesizes the historical and contemporary advancements in therapeutic strategies, offering a critical analysis of their efficacy, safety profiles, and adaptability. The enduring role of topical corticosteroids in managing AD is examined, acknowledging their potent anti-inflammatory properties alongside their potential adverse side effects, particularly in extended usage. The article explores the utilization of topical calcineurin inhibitors like tacrolimus and pimecrolimus, highlighting their novel anti-inflammatory pathways while also scrutinizing concerns over potential malignancies that relegate them to second-line therapy. The present investigation …
The Effects Of Curcumin On Erα, P53, And P21 In The Mcf-7 Breast Cancer Cell Line, Samantha E. Pfiffner, Mia Morse, Erin Hallman, Kaylin Whittaker, Aisha Zanib, Sumi Dinda Ph.D.
The Effects Of Curcumin On Erα, P53, And P21 In The Mcf-7 Breast Cancer Cell Line, Samantha E. Pfiffner, Mia Morse, Erin Hallman, Kaylin Whittaker, Aisha Zanib, Sumi Dinda Ph.D.
Medical Student Research Symposium
Curcumin is a golden-yellow flavonoid compound derived from the turmeric plant root that has been used in Chinese and Indian medicine for centuries. Curcumin has been shown to have antioxidant and anti-inflammatory properties, and because of this, has been gaining traction in the field of cancer research. Breast cancer is the most commonly diagnosed cancer in women, and is the second leading cause of cancer death in women, next to lung cancer. Because of the prevalence and mortality of breast cancer, possible therapeutics must be investigated. Due to the beneficial properties of curcumin and pervasiveness of breast cancer, we have …
Evaluation Of Novel Therapeutic Agents For The Treatment Of Chronic Dry Eyes, Lilian Huynh, Evonie Villarete, Surajit Dey
Evaluation Of Novel Therapeutic Agents For The Treatment Of Chronic Dry Eyes, Lilian Huynh, Evonie Villarete, Surajit Dey
Annual Research Symposium
Dry eye disease (DED) is a multifactorial ocular condition, where disrupted tear film stability and ocular surface inflammation affected between 5% to 34% of the worldwide population in 2015 and posed a challenge to conventional ophthalmic treatments. Recent advances have led to potential novel therapeutics aiming to alleviate symptoms and improve patient outcomes.
Etiology Of Drug-Induced Edema: A Review Of Dihydropyridine, Thiazolidinedione, And Other Medications Causing Edema, Evan S. Sinnathamby, Bretton T. Urban, Robert A. Clark, Logan T. Roberts, Audrey J. De Witt, Danielle M. Wenger, Aya Mouhaffel, Olga Willett, Shahab Ahmadzadeh, Sahar Shekoohi, Alan D. Kaye, Giustino Varrassi
Etiology Of Drug-Induced Edema: A Review Of Dihydropyridine, Thiazolidinedione, And Other Medications Causing Edema, Evan S. Sinnathamby, Bretton T. Urban, Robert A. Clark, Logan T. Roberts, Audrey J. De Witt, Danielle M. Wenger, Aya Mouhaffel, Olga Willett, Shahab Ahmadzadeh, Sahar Shekoohi, Alan D. Kaye, Giustino Varrassi
School of Medicine Faculty Publications
Edema is an accumulation of fluid in the body's tissues that affects millions of Americans yearly. It can affect multiple body parts, for example, the brain or eyes, but often occurs in the periphery, including the feet and legs. Medications, such as dihydropyridine and thiazolidinediones (TZDs), can be the etiology of edema. Edema can develop in association with problems in the vasculature or lymphatic flow. In recent years, a better understanding of these drug-induced mechanisms has been appreciated. Specifically, dihydropyridines can increase hydrostatic pressure and cause selective pre-capillary vessel vasodilation. TZDs can cause edema through increased vascular permeability and increased …
Nanoparticles For Applications In Specific Diagnostics And Precision Medicine, Naxhije Berisha
Nanoparticles For Applications In Specific Diagnostics And Precision Medicine, Naxhije Berisha
Dissertations, Theses, and Capstone Projects
Heterogeneity is common in the expression of cancer and treatment response. Precision medicine enables healthcare providers to tailor medical care to an individual's distinct genetic and environmental makeup. This customization has the potential to result in more efficient treatments while minimizing side effects. We believe that by studying the interface of nanotechnology and cancer medicine we can elucidate innovative solutions that address the challenges of disease heterogeneity. This includes advancements in drug delivery, formulations development, and diagnostic sensing. We highlight three studies that use nanotechnology for applications in precision medicine. In Chapter 2, we highlight design optimization of drug formulations …
Hyperkalemia: Pharmacotherapies And Clinical Considerations, Evan S. Sinnathamby, Kelly T. Banh, William T. Barham, Tyler D. Hernandez, Audrey J. De Witt, Danielle M. Wenger, Vincent G. Klapper, David Mcgregor, Antonella Paladini, Shahab Ahmadzadeh, Sahar Shekoohi, Alan D. Kaye, Giustino Varrassi
Hyperkalemia: Pharmacotherapies And Clinical Considerations, Evan S. Sinnathamby, Kelly T. Banh, William T. Barham, Tyler D. Hernandez, Audrey J. De Witt, Danielle M. Wenger, Vincent G. Klapper, David Mcgregor, Antonella Paladini, Shahab Ahmadzadeh, Sahar Shekoohi, Alan D. Kaye, Giustino Varrassi
School of Medicine Faculty Publications
Hyperkalemia has been defined as a condition where a serum potassium level is > 5.5 mmol/l. It is associated with fatal dysrhythmias and muscular dysfunction. Certain medical conditions, such as chronic kidney disease (CKD), diabetes mellitus, and others, can lead to hyperkalemia. Many of the signs of hyperkalemia are nonspecific. A history and physical examination can be beneficial in the diagnosis of the condition. In this regard, certain characteristic electrocardiogram findings are associated with hyperkalemia along with laboratory potassium levels. In acute and potentially lethal conditions, hyperkalemia treatments include glucose and insulin, bicarbonate, calcium gluconate, beta-2 agonists, hyperventilation, and dialysis. There …
Stevens-Johnson Syndrome From Combined Allopurinol And Angiotensin-Converting Enzyme Inhibitors: A Narrative Review, Isabella M. Fabian, Kirsten Maddox, Cameron Robicheaux, Rahib K. Islam, Ahmed Anwar, Bradley Dorius, Christopher L. Robinson, Adam M. Kaye, Giustino Varrassi, Shahab Ahmadzadeh, Sahar Shekoohi, Alan D. Kaye
Stevens-Johnson Syndrome From Combined Allopurinol And Angiotensin-Converting Enzyme Inhibitors: A Narrative Review, Isabella M. Fabian, Kirsten Maddox, Cameron Robicheaux, Rahib K. Islam, Ahmed Anwar, Bradley Dorius, Christopher L. Robinson, Adam M. Kaye, Giustino Varrassi, Shahab Ahmadzadeh, Sahar Shekoohi, Alan D. Kaye
School of Medicine Faculty Publications
Stevens-Johnson syndrome (SJS) is a severe and potentially debilitating skin reaction frequently related to medication use. Allopurinol and angiotensin-converting enzyme (ACE) inhibitors are commonly prescribed medications for prevalent health conditions worldwide, and their interaction associated with SJS warrants further investigation. A comprehensive literature search was performed to investigate cases as studies related to SJS occurring in patients with concomitant use of allopurinol and ACE inhibitors. We identified case reports and studies detailing hypersensitivity reactions, including SJS, attributed to a combination of allopurinol and ACE inhibitors. Despite the drug-drug interactions or lack thereof seen in patient populations, there is no definitive …
Design Of Two New Sulfur Derivatives Of Perezone: In Silico Study Simulation Targeting Parp-1 And In Vitro Study Validation Using Cancer Cell Lines, Alejandro Rubiales-Martínez, Joel Martinez, Elvia Mera-Jiménez, Javier Perez-Flores, Guillermo Tellez-Isaias, Rene Miranda Ruvacalba, Maricarmen Hernandez-Rodriguez, Teresa Mancillo Percino, Martha Edith Macia Perez, Maria Ines Nicholas-Vazquez
Design Of Two New Sulfur Derivatives Of Perezone: In Silico Study Simulation Targeting Parp-1 And In Vitro Study Validation Using Cancer Cell Lines, Alejandro Rubiales-Martínez, Joel Martinez, Elvia Mera-Jiménez, Javier Perez-Flores, Guillermo Tellez-Isaias, Rene Miranda Ruvacalba, Maricarmen Hernandez-Rodriguez, Teresa Mancillo Percino, Martha Edith Macia Perez, Maria Ines Nicholas-Vazquez
Poultry Science Faculty Publications and Presentations
Poly-ADP-Ribose Polymerase (PARP-1) is an overexpressed enzyme in several carcinomas; consequently, the design of PARP-1 inhibitors has acquired special attention. Hence, in the present study, three compounds (8–10) were produced through a Michael addition protocol, using phenylmethanethiol, 5-fluoro-2-mercaptobenzyl alcohol, and 4-mercaptophenylacetic acid, respectively, as nucleophiles and perezone as the substrate, expecting them to be convenient candidates that inhibit PARP-1. It is convenient to note that in the first stage of the whole study, the molecular dynamics (MD) simulations and the quantum chemistry studies of four secondary metabolites, i.e., perezone (1), perezone angelate (2 …
Analyses Of Patients Who Self-Administered Diazepam Nasal Spray For Acute Treatment Of Seizure Clusters, Sunita Misra, Michael R Sperling, Vikram Rao, Jurriaan Peters, Patricia Penovich, James Wheless, R. Edward Hogan, Charles Davis, Enrique Carrazana, Adrian Rabinowicz
Analyses Of Patients Who Self-Administered Diazepam Nasal Spray For Acute Treatment Of Seizure Clusters, Sunita Misra, Michael R Sperling, Vikram Rao, Jurriaan Peters, Patricia Penovich, James Wheless, R. Edward Hogan, Charles Davis, Enrique Carrazana, Adrian Rabinowicz
Department of Medicine Faculty Papers
For acute treatment of seizure clusters in patients with epilepsy, intranasal administration of acute seizure therapies has been shown to provide accessibility and ease of use to care partners as well as the potential for self-administration by patients. Diazepam nasal spray (Valtoco®) was approved by the US Food and Drug Administration for acute treatment of intermittent, stereotypic episodes of frequent seizure activity (ie, seizure clusters, acute repetitive seizures) in patients with epilepsy aged ≥6 years. Self-administration consistent with the prescribing information is feasible and was reported by a subgroup of patients (n = 27 of 163) in a long-term phase …
Pantoprazole Induced Pancytopenia In A Post-Chemotherapy Patient: A Case Report, Rohan Divecha, Caleb Nieves, Paul Mathew
Pantoprazole Induced Pancytopenia In A Post-Chemotherapy Patient: A Case Report, Rohan Divecha, Caleb Nieves, Paul Mathew
Central & West Texas GME Research Day 2024
No abstract provided.
Doxazosin Immediate Release As A Novel Treatment For Nightmares In Posttraumatic Stress Disorder., Danyaal Khan, Christie Richardson, Martin Forsberg
Doxazosin Immediate Release As A Novel Treatment For Nightmares In Posttraumatic Stress Disorder., Danyaal Khan, Christie Richardson, Martin Forsberg
Rowan-Virtua School of Osteopathic Medicine Departmental Research
Nightmares and flashbacks are common debilitating symptoms of posttraumatic stress disorder (PTSD) that can disrupt daily functioning. Prazosin, an alpha-1 adrenergic antagonist, has been commonly used off-label for the treatment of these intrusion symptoms, although its short half-life makes it so that often multiple doses are needed. Doxazosin, another alpha-1 antagonist, is starting to be investigated in the treatment of PTSD-related nightmares due to its lesser side effect profile and longer half-life. In our case series, we present three cases of patients with PTSD-related nightmares who were successfully treated with doxazosin following a relapse of symptoms after discontinuation of prazosin …
A Retrospective Study Of Procalcitonin Utilization In Clinical Practice, Tanner Norris, Matthew Yurkewicz, Patrick Jenkins, Beth Hicks, Dmitriy Scherbak
A Retrospective Study Of Procalcitonin Utilization In Clinical Practice, Tanner Norris, Matthew Yurkewicz, Patrick Jenkins, Beth Hicks, Dmitriy Scherbak
Continental, MidAmerica, & Mountain Divisions GME Research Day 2024
No abstract provided.
Pharmacoepidemiology Of Glp-1 Receptor Agonists, Nicholas E. Woessner
Pharmacoepidemiology Of Glp-1 Receptor Agonists, Nicholas E. Woessner
Continental, MidAmerica, & Mountain Divisions GME Research Day 2024
No abstract provided.
Managing Stress: A Study Of Stress Response Mechanisms In Mycobacteria, Augusto C. Hunt Serracin
Managing Stress: A Study Of Stress Response Mechanisms In Mycobacteria, Augusto C. Hunt Serracin
Biology Dissertations - Archive
Mycobacteria encompass many pathogenic species known to cause severe disease in humans. A well-known example is Mycobacterium tuberculosis (Mtb), the causative agent of the lung disease tuberculosis, which kills millions of humans worldwide yearly. Pathogenic mycobacteria like Mtb are challenging to treat because of their innate ability to adapt to environmental stress. Their unique cell physiology and conserved stress responses allow them to combat biological insults, regulate growth, and regulate genes involved in stress; all these responses increase tolerance to antibiotics. The current therapies to treat mycobacterial infections are lengthy and, at times, unsuccessful, partly due to antibiotic tolerance. A …
The Complex Protein Analysis Of Purified Extracellular Vesicles In The Study Of Colorectal Cancer, Renee Boone, Cecilia Osthoff
The Complex Protein Analysis Of Purified Extracellular Vesicles In The Study Of Colorectal Cancer, Renee Boone, Cecilia Osthoff
Science University Research Symposium (SURS)
Proteomics, the study of complex protein mixtures in which liquid chromatography-mass spectrometry (LC-MS) is used to analyze peptide sequences, is commonly utilized to study the double membrane, cell-derived vesicles known as exosomes. Exosomes are double membrane, cell-derived vesicles that contain cell components such as DNA, lipids, and proteins. They function to transport proteins and cellular materials between cells and are involved in the progression and metastasis of cancer. The impact of these extracellular vesicles on cancer spread can be analyzed using proteomics, through the purification of the proteins isolated from the vesicles. The purpose of our research is to analyze …
Quantification Of Antiviral Drug Tenofovir (Tfv) By Surface-Enhanced Raman Spectroscopy (Sers) Using Cumulative Distribution Functions (Cdfs), Marguerite R. Butler, Jana Hrncirova, Meredith Clark, Sucharita Dutta, John B. Cooper
Quantification Of Antiviral Drug Tenofovir (Tfv) By Surface-Enhanced Raman Spectroscopy (Sers) Using Cumulative Distribution Functions (Cdfs), Marguerite R. Butler, Jana Hrncirova, Meredith Clark, Sucharita Dutta, John B. Cooper
Chemistry & Biochemistry Faculty Publications
Surface-enhanced Raman spectroscopy (SERS) is an ultrasensitive spectroscopic technique that generates signal-enhanced fingerprint vibrational spectra of small molecules. However, without rigorous control of SERS substrate active sites, geometry, surface area, or surface functionality, SERS is notoriously irreproducible, complicating the consistent quantitative analysis of small molecules. While evaporatively prepared samples yield significant SERS enhancement resulting in lower detection limits, the distribution of these enhancements along the SERS surface is inherently stochastic. Acquiring spatially resolved SERS spectra of these dried surfaces, we have shown that this enhancement is governed by a power law as a function of analyte concentration. Consequently, by definition, …
Exploration Of Potential Broad-Spectrum Antiviral Targets In The Enterovirus Replication Element: Identification Of Six Distinct 5' Cloverleaves, Morgan G. Daniels, Meagan E. Werner, Rockwell T. Li, Steven M. Pascal
Exploration Of Potential Broad-Spectrum Antiviral Targets In The Enterovirus Replication Element: Identification Of Six Distinct 5' Cloverleaves, Morgan G. Daniels, Meagan E. Werner, Rockwell T. Li, Steven M. Pascal
Chemistry & Biochemistry Faculty Publications
Enterovirus genomic replication initiates at a predicted RNA cloverleaf (5′CL) at the 5′ end of the RNA genome. The 5′CL contains one stem (SA) and three stem-loops (SLB, SLC, SLD). Here, we present an analysis of 5′CL conservation and divergence for 209 human health-related serotypes from the enterovirus genus, including enterovirus and rhinovirus species. Phylogenetic analysis indicates six distinct 5′CL serotypes that only partially correlate with the species definition. Additional findings include that 5′CL sequence conservation is higher between the EV species than between the RV species, the 5′CL of EVA and EVB are nearly identical, and RVC has the …
Harnessing Antagonistic Pleiotropy: Tolc-Dependent Coliphages Can Drive Reduced Antibiotic Resistance In E. Coli, Cooper Mckenna
Harnessing Antagonistic Pleiotropy: Tolc-Dependent Coliphages Can Drive Reduced Antibiotic Resistance In E. Coli, Cooper Mckenna
CMC Senior Theses
The rise of multidrug-resistant (MDR) bacterial pathogens has been a growing concern in healthcare around the world, and bacteriophage (phage) therapy is a promising method to combat MDR infections. One defense mechanism of E. coli against antibiotics is the TolC-AcrAB efflux pump. At the same time, some phages use TolC as a surface receptor to infect the cell. This puts TolC at a crossroads in which it is beneficial to the bacteria to protect against antibiotics but harmful by allowing phage infection, creating the potential for evolutionary trade-offs. Previous research has identified only three TolC-dependent phages and shown phage-resistant E. …
A New Approach For Discriminating Spatially Acquired Sers Spectra Using Antiretroviral Drug Emtricitabine As A Test Sample, Jana Hrncirova, Marguerite R. Butler, Meredith R. Clark, Gustavo F. Doncel, John B. Cooper
A New Approach For Discriminating Spatially Acquired Sers Spectra Using Antiretroviral Drug Emtricitabine As A Test Sample, Jana Hrncirova, Marguerite R. Butler, Meredith R. Clark, Gustavo F. Doncel, John B. Cooper
Chemistry & Biochemistry Faculty Publications
In this study, an antiretroviral drug emtricitabine (also known as FTC or Emtriva) was detected and quantified down to 40 ng/ml by using surface-enhanced Raman spectroscopy (SERS). Its aqueous standards were tested with two types of silver nanoparticles (colloidal and dendritic) using a specially developed aluminum well plate. The SERS spectra were acquired using a Raman scanning device with 30-mu m spatial resolution. The spectral data were analyzed using a new approach for the discrimination of the spatially acquired spectra based on the Quality index (Qi). After the Qi is calculated, the spectral data are sorted based on the Qi. …
Developing Radiosensitizers To Enhance Radiotherapy In Treating Gastroenteropancreatic Neuroendocrine Tumor, Zeta Chow
Theses and Dissertations--Clinical and Translational Science
Gastroenteropancreatic Neuroendocrine Tumor (GEP-NET) is a heterogeneous group of malignancies arising from multipotent neuroendocrine stem cells in the gastrointestinal tract. The incidence of GEP-NET continues to rise, possibly due to the advancement of imaging and biomarkers available for diagnosis. However, even though the majority of patients are diagnosed with low-grade and localized disease, a significant percentage of patients present with advanced-stage metastatic disease with poor prognosis in months to a few years. These advanced-stage GEP-NET patients can also present with a variety of debilitating symptoms that significantly impact their quality of life. The role of palliative-intent surgery is limited, and …
Novel Engineering Approaches For Orthopedic Injury Treatment And Infection Diagnosis, Cynthia Co
Novel Engineering Approaches For Orthopedic Injury Treatment And Infection Diagnosis, Cynthia Co
Bioengineering Dissertations - Archive
Bioengineering has made significant contributions to the treatment of orthopedic injury through interdisciplinary approaches. Central to these advancements are many orthopedic implants, including anchors and joint replacements, which have been designed to restore mobility. Despite their functional efficacy, these products have limited lifespan and are associated with many complications, such as implant-associated infection. The success of implant design and function, both in the short and long term, is paramount for enhancing patient outcomes and overall well-being. Therefore, my thesis work is dedicated to addressing these critical challenges, aiming to maximize their treatment effect while minimizing the implant-associated complications.
Long-term patient …
Molecular Determinants Of Trp Channel Gating, Briar J. Bell
Molecular Determinants Of Trp Channel Gating, Briar J. Bell
Theses and Dissertations (ETD)
Transient Receptor Potential (TRP) ion channels are a family of proteins that contribute to a myriad of physiological functions. They have been extensively studied since their discovery 35 years ago; however, there are still many questions regarding the mechanisms by which they function. This family of proteins is characterized by a generally shared structure: an intracellular N terminus featuring ankyrin repeats, six transmembrane helices including the pore domain, a re-entrant loop and TRP helix, and an intracellular C terminus with varying structure. Each of these regions has been implicated in the regular function of TRPs, while mutations that alter trafficking …
Successful Management Of Spontaneous Unilateral Twin Ectopic Pregnancy With Two-Step Dose Of Methotrexate, Lauren A. Forbes, Navya Nuthivana, Renee Morales
Successful Management Of Spontaneous Unilateral Twin Ectopic Pregnancy With Two-Step Dose Of Methotrexate, Lauren A. Forbes, Navya Nuthivana, Renee Morales
Department of Obstetrics & Gynecology Faculty Publications
The incidence of unilateral tubal twin pregnancy is 1/20,000–1/250,000 with about 100 reported cases. Four of the six cases that were medically managed were successful. A 24-year-old female presented to the emergency department (ED) with vaginal bleeding and abdominal cramping. She was hemodynamically stable without signs of an acute abdomen. Laboratory evaluation revealed she was pregnant with a serum beta-human chorionic gonadotropin (b-hCG) of 798 mIU/mL. Transvaginal ultrasound (TVUS) revealed a single left tubal pregnancy with a yolk sac. The patient elected medical management with body surface area (BSA)–based intramuscular (IM) methotrexate (MTX). On Day 4, the patient returned to …
Gene Expression Of Tight Junctions In Foreskin Is Not Affected By Hiv Pre-Exposure Prophylaxis, Emily L. Webb, Stefan Petkov, Heejin Yun, Laura Else, Limakatso Lebina, Jennifer Serwanga, Azure-Dee A.P. Pillay, Thabiso B. Seiphetlo, Susan Mugaba, Patricia Namubiru, Geoffrey Odoch, Daniel Opoka, Andrew S. Ssemata, Pontiano Kaleebu, Saye Khoo, Neil Martinson, Julie Fox, Clive M. Gray, Carolina Herrera, Francesca Chiodi
Gene Expression Of Tight Junctions In Foreskin Is Not Affected By Hiv Pre-Exposure Prophylaxis, Emily L. Webb, Stefan Petkov, Heejin Yun, Laura Else, Limakatso Lebina, Jennifer Serwanga, Azure-Dee A.P. Pillay, Thabiso B. Seiphetlo, Susan Mugaba, Patricia Namubiru, Geoffrey Odoch, Daniel Opoka, Andrew S. Ssemata, Pontiano Kaleebu, Saye Khoo, Neil Martinson, Julie Fox, Clive M. Gray, Carolina Herrera, Francesca Chiodi
Department of Obstetrics & Gynecology Faculty Publications
Introduction: Tight junctions (TJs) serve as permeability filters between the internal and external cellular environment. A large number of proteins have been identified to be localized at the TJs. Due to limitations in tissue collection, TJs in the male genital tract have been understudied.
Methods: We analysed the transcriptomics of 132 TJ genes in foreskin tissue of men requesting voluntary medical male circumcision (VMMC) and enrolled in the Combined HIV Adolescent Prevention Study (CHAPS) trial conducted in South Africa and Uganda (NCT03986970). The trial evaluated the dose requirements for event-driven HIV pre-exposure prophylaxis (PrEP) with emtricitabine-tenofovir (FTC-TDF) or emtricitabine-tenofovir alafenamide …
Advancing Small Molecule Therapies For Myotonic Dystrophy Type 1, Sawyer M. Hicks
Advancing Small Molecule Therapies For Myotonic Dystrophy Type 1, Sawyer M. Hicks
Electronic Theses & Dissertations (2024 - present)
Myotonic dystrophy type 1 (DM1) is a multisystemic disorder caused by the expression of expanded CUG (CUGexp) repeat RNA from the myotonic dystrophy protein kinase (DMPK) gene. This CUGexp repeat RNA’s gain-of-function mechanism leads to the sequestration of muscleblind-like (MBNL) proteins, resulting in widespread alternative splicing dysregulation across tissues. Despite significant research, there are currently no approved therapeutics targeting the underlying causes of DM1. This dissertation explores the development and optimization of a novel class of small molecules, Modified Polycyclic Compounds (MPCs), designed to address splicing dysregulation in DM1. MPCs were designed from previously published …