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Sdrnas Participate In The Maintenance And Onset Of Prostate Cancer, Neil Chaudhary May 2024

Sdrnas Participate In The Maintenance And Onset Of Prostate Cancer, Neil Chaudhary

Poster Presentations

What is an sdRNA? Noncoding RNA (ncRNA) is a class of RNA that includes microRNA (miRNA) and small nucleolar RNA (snoRNA). Fragments excised from ncRNAs are known as noncodingderived RNA (ndRNA). A certain class of ndRNAs that are derived from snoRNAs have been denoted as Small Nucleolar Derived RNAs (sdRNAs). Our lab has previously hypothesized and demonstrated that sdRNAs display regulatory functions on target genes, similar to the functions of miRNAs. sdRNAs are almost identical to microRNAs and differ mainly in their source of origin.

Our lab has shown that sdRNA-93 is frequently misexpressed in breast cancer cell lines and …


Calcium Carbonate As A Potential Intervention To Prevent Labor Dystocia: Narrative Review Of The Literature, Sabahat Raees, Marie Forgie, Rita Mitchell, Emily Malloy Jul 2023

Calcium Carbonate As A Potential Intervention To Prevent Labor Dystocia: Narrative Review Of The Literature, Sabahat Raees, Marie Forgie, Rita Mitchell, Emily Malloy

Journal of Patient-Centered Research and Reviews

Anecdotally, there are attestations from clinicians of calcium carbonate being used successfully for laboring people experiencing labor dystocia. The goal of this narrative review was to provide a synopsis of pertinent literature on calcium use in obstetrics to explore the potential benefit of calcium carbonate as a simple and low-cost intervention for prevention or treatment of labor dystocia. To answer how calcium and carbonate physiologically contribute to myometrium contractility, we conducted a literature search of English-language peer-reviewed articles, with no year limitation, consisting of the keywords “calcium,” “calcium carbonate,” “calcium gluconate,” “pregnancy,” “hemorrhage,” and variations of “smooth muscle contractility” and …


Development Of Rp-Hplc Method For Simultaneous Determination Of Nebivolol Hydrochloride, Valsartan And Hydrochlorothiazide In Co-Administrated Antihypertensive Agents And Human Plasma, Shereen Mowaka, M. Rizk, Maha M. Abou El‐Alamin, Mariam Mohamed Jun 2023

Development Of Rp-Hplc Method For Simultaneous Determination Of Nebivolol Hydrochloride, Valsartan And Hydrochlorothiazide In Co-Administrated Antihypertensive Agents And Human Plasma, Shereen Mowaka, M. Rizk, Maha M. Abou El‐Alamin, Mariam Mohamed

Pharmacy

Reversed phase high performance liquid chromatography combined with photodiode array (HPLC-PDA) detector method was developed for simultaneous determination of two binary antihypertensive combinations; either Nebivolol (NEB) with Hydrochlorothiazide (HCZ) or with Valsartan (VAL) in pharmaceutical formulation and spiked human plasma. The method was successfully applied to separate the three drugs on one chromatogram under the same chromatographic conditions that used for two binary combinations. The separation was established on Xterra C18 column using gradient mobile phase which composed of acidified water of pH = 3.0 (adjusted with 0.1% orthophosphoric acid) and acetonitrile with flow rate of 1.0 mL/min. The drugs …


Chewed Versus Swallowed Ticagrelor In P2y12 Inhibitor-Naïve Patients Undergoing Percutaneous Coronary Intervention, Thomas F. Wilson, Muddasir Ashraf, M. Fuad Jan, Tonga Nfor, Louie Kostopoulos, Joaquin Solis, Jayant Khitha, Ahmad Khraisat, Anthony C. Defranco, Tanvir Bajwa, Suhail Q. Allaqaband Apr 2023

Chewed Versus Swallowed Ticagrelor In P2y12 Inhibitor-Naïve Patients Undergoing Percutaneous Coronary Intervention, Thomas F. Wilson, Muddasir Ashraf, M. Fuad Jan, Tonga Nfor, Louie Kostopoulos, Joaquin Solis, Jayant Khitha, Ahmad Khraisat, Anthony C. Defranco, Tanvir Bajwa, Suhail Q. Allaqaband

Journal of Patient-Centered Research and Reviews

Purpose: Dual antiplatelet therapy is standard for patients undergoing percutaneous coronary intervention (PCI) with stents. Traditionally, patients swallow the loading dose of a P2Y12 inhibitor before or during PCI. Time to achieve adequate platelet inhibition after swallowing the loading dose varies significantly. Chewed tablets may allow more rapid inhibition of platelet aggregation. However, data for this strategy in patients with stable ischemic heart disease or non-ST-elevation acute coronary syndrome (NSTE-ACS) are less robust.

Methods: In this single-center prospective trial, 112 P2Y12-naïve patients with stable ischemic heart disease or NSTE-ACS on aspirin therapy and who received ticagrelor after coronary angiography but …


Efficacy Of Kidney Reperfusion Treatments Relative To Function And Survival Rates After Transplantation, Mitchell Rohr Apr 2023

Efficacy Of Kidney Reperfusion Treatments Relative To Function And Survival Rates After Transplantation, Mitchell Rohr

Senior Honors Theses

Donor kidneys are damaged upon circulatory death before being preserved with machine perfusion until transplantation. During machine perfusion, blood is pumped back into the vasculature of the kidney, causing damage called ischemic reperfusion injury. The two forms of machine perfusion are hypothermic machine perfusion and normothermic machine perfusion. Different methods of treatment can be used during either hypothermic machine perfusion or normothermic machine perfusion to prevent ischemic reperfusion injury. Each of the treatment methods that were reviewed showed potential for preventing ischemic reperfusion injury, with hypothermic treatments having higher average levels of feasibility than normothermic treatments. The effect of the …


The Potential Off-Target Neuroprotective Effect Of Sister Gliflozins Suggests Their Repurposing Despite Not Crossing The Blood–Brain Barrier: From Bioanalytical Assay In Rats Into Theory Genesis, Shereen Mowaka, Moataz S. Hendy, Ehab F. Elkady, Asmaa El-Zaher, Bassam M. Ayoub Mar 2023

The Potential Off-Target Neuroprotective Effect Of Sister Gliflozins Suggests Their Repurposing Despite Not Crossing The Blood–Brain Barrier: From Bioanalytical Assay In Rats Into Theory Genesis, Shereen Mowaka, Moataz S. Hendy, Ehab F. Elkady, Asmaa El-Zaher, Bassam M. Ayoub

Pharmacy

Gliflozins are successfully marketed antidiabetic agents with a reported neuroprotective effect, and this study tests their blood–brain barrier crossing ability. Henceforward, a computational hypothesis interpreting their effects was reasonable after failure to cross into the brain. A chromatographic bioassay for canagliflozin, dapagliflozin, and empagliflozin was developed, validated, and applied to the rat's and rat's plasma and brain. HPLC method robustness was tested over two levels using Design of Experiment on MINITAB. It is the first method for gliflozins’ detection in rats’ brain tissue. The method was applied on 18 rats and six for each drug. Concentrations in plasma were determined …


Second Generation Phenyloxadiazolyl Methyl Sulfones For Thiol-Specific Bioconjugations, Guillaume Dewaele-Le Roi Feb 2023

Second Generation Phenyloxadiazolyl Methyl Sulfones For Thiol-Specific Bioconjugations, Guillaume Dewaele-Le Roi

Dissertations, Theses, and Capstone Projects

The role of antibody-based molecular agents for diagnosis and therapy of cancer has expanded significantly over the past decades. However, most of these constructs are synthesized using traditional bioconjugation methods based on the random ligations between the molecular cargo and lysine residues within the protein. These non-specific approaches can create poorly defined conjugates with suboptimal immunoreactivity and in vivo performance while Site-specific approaches to antibody bioconjugation based on ligations between maleimides and free cysteine residues have long stood as attractive alternatives. Yet the inherent instability of the thiol-maleimide linkage has fueled the search for new, more stable thiol-reactive prosthetic groups. …


Msdrp: A Deep Learning Model Based On Multisource Data For Predicting Drug Response, Haochen Zhao, Xiaoyu Zhang, Qichang Zhao, Yaohang Li, Jianxin Wang Jan 2023

Msdrp: A Deep Learning Model Based On Multisource Data For Predicting Drug Response, Haochen Zhao, Xiaoyu Zhang, Qichang Zhao, Yaohang Li, Jianxin Wang

Computer Science Faculty Publications

Motivation: Cancer heterogeneity drastically affects cancer therapeutic outcomes. Predicting drug response in vitro is expected to help formulate personalized therapy regimens. In recent years, several computational models based on machine learning and deep learning have been proposed to predict drug response in vitro. However, most of these methods capture drug features based on a single drug description (e.g. drug structure), without considering the relationships between drugs and biological entities (e.g. target, diseases, and side effects). Moreover, most of these methods collect features separately for drugs and cell lines but fail to consider the pairwise interactions between drugs and cell …


Biomedical Applications Of Protein Films And Polymeric Nanomaterials, Sanjana Gopalakrishnan Oct 2022

Biomedical Applications Of Protein Films And Polymeric Nanomaterials, Sanjana Gopalakrishnan

Doctoral Dissertations

Biomaterials are widely applied for the diagnosis and treatment of numerous diseases. In addition to fulfilling specific biological functions, biomaterials must also be non-toxic, biocompatible, and sterilizable to be regarded as safe-for-use. Polymers are excellent candidates for fabricating functional biomaterials due to their wide availability and varied properties and may be natural or synthetic. Polymer precursors are fabricated into coatings, foams, scaffolds, gels, composites, and nanomaterials for several biomedical applications. This dissertation focuses on two types of polymeric biomaterials – protein-based materials and synthetic polymeric nanoparticles. Proteins are biopolymers that naturally occur with a variety of structural and functional properties. …


Omarigliptin Attenuates Rotenone-Induced Parkinson's Disease In Rats: Possible Role Of Oxidative Stress, Endoplasmic Reticulum Stress And Immune Modulation, Shereen Mowaka, Haidy E. Michel, Mariam M. Tadros, Moataz S. Hendy, Bassam M. Ayoub Jun 2022

Omarigliptin Attenuates Rotenone-Induced Parkinson's Disease In Rats: Possible Role Of Oxidative Stress, Endoplasmic Reticulum Stress And Immune Modulation, Shereen Mowaka, Haidy E. Michel, Mariam M. Tadros, Moataz S. Hendy, Bassam M. Ayoub

Pharmacy

The current study aimed to explore the potential neuroprotective effect of omarigliptin (OG), an antidiabetic drug that crosses the blood-brain barrier (BBB), in a Parkinson's disease (PD) rotenone-based rat-model. Results showed that OG attenuated motor impairment, histological aberrations, α-synuclein accumulation, and rescued the dopaminergic neurons in rotenone-administered rats. Furthermore, OG halted rotenone-induced oxidative stress; as shown by reduced lipid peroxidation, decline in the oxidative stress sensor (nuclear factor erythroid 2-related factor 2) and its downstream heme oxygenase-1. In addition, OG abrogated neuroinflammation and apoptosis in rotenone-treated rats. Moreover, OG ameliorated endoplasmic reticulum (ER) stress in rotenone-administered rats; as evidenced by …


Synthesis, Structural Characterization, And In Vitro Biological Assessment Of Trans- Platinum (Ii) Thionate Complexes As Potent Anticancer Agents, Mia Alshami May 2022

Synthesis, Structural Characterization, And In Vitro Biological Assessment Of Trans- Platinum (Ii) Thionate Complexes As Potent Anticancer Agents, Mia Alshami

Chemistry & Biochemistry Undergraduate Honors Theses

The content of this thesis has been originally reported in our published paper, “trans-Platinum (II) Thionate Complexes: Synthesis, Structural Characterization, and in vitro Biological Assessment as Potent Anticancer Agents” ChemPlusChem 2019 84, 1525-1535, DOI: 10.1002/cplu.201900394, in which I served as coauthor. Cancer caused 9.6 million deaths in 2018 worldwide, with 18.1 million new diagnoses during that same year.The most widely used metal in anticancer drugs is platinum (Pt), and these drugs are used to treat almost 50% of cancer patients. To optimize drug effectiveness, trans-configured Pt(II) complexes have been introduced as a strategy to potentially overcome the …


“Translation Of Hdac6 Pet Imaging Using [18f]Ekz-001 – Cgmp Production And Measurement Of Hdac6 Target Occupancy In Nhps” – A Review, Dania Rahal May 2022

“Translation Of Hdac6 Pet Imaging Using [18f]Ekz-001 – Cgmp Production And Measurement Of Hdac6 Target Occupancy In Nhps” – A Review, Dania Rahal

Chemistry & Biochemistry Undergraduate Honors Theses

The inhibition of histone deacetylase 6 (HDAC6) has been reported to alleviate the effects of neurodegenerative diseases such as Alzheimer’s disease. The brain-penetrant PET radioligand [18F]EKZ-001 has high affinity and selectivity towards HDAC6 and therefore suggests great promise in therapeutic treatment studies and development for neurodegenerative diseases. “Translation of HDAC6 PET imaging using [18F]EKZ-001 – cGMP production and measurement of HDAC6 target occupancy in NHPs” has achieved an effective, fully automated method of producing [18F]EKZ-001 in compliance with current good manufacturing practices (cGMP) to support the translation of [18F]EKZ-001 PET for …


Kinetic Degradation Study Of Ipragliflozin Coupled With Ms/Ms Structural Elucidation, Shereen Mowaka, Manar M. Elhassan,, Amr M. Mahmoud, Maha A. Hegazy Mar 2022

Kinetic Degradation Study Of Ipragliflozin Coupled With Ms/Ms Structural Elucidation, Shereen Mowaka, Manar M. Elhassan,, Amr M. Mahmoud, Maha A. Hegazy

Pharmacy

Ipragliflozin degradation behavior was studied under different conditions: acidic, basic, photolytic, oxidative and thermal degradation conditions. This forced degradation study showed the extensive degradation of Ipragliflozin under acidic, basic and oxidative conditions while showed high stability under thermal and photo-degradation conditions. The separation of Ipragliflozin and its degradation products was done using Hypersil Gold® UPLC C18 column with 1.9 μm particle size (3 × 50 mm) as stationary phase and a mobile phase composed of acetonitrile: potassium monobasic phosphate buffer pH 3 (50:50; v/v) delivered at flow rate of 0.6 mL min−1. Validation of the proposed method was carried out …


Effectiveness Of Stabilized Hypochlorous Acid In Acute Peritonitis Treatment: A Murine Surgical Study, Benjamin Michael Pomeroy Jan 2022

Effectiveness Of Stabilized Hypochlorous Acid In Acute Peritonitis Treatment: A Murine Surgical Study, Benjamin Michael Pomeroy

MSU Graduate Theses

Peritonitis is an inflammatory condition affecting the mesothelial cells that line the peritoneal cavity and is commonly induced by bowel perforations. This medical emergency is treated through antibiotic therapy and surgical intervention followed by tissue irrigation (lavage). Acute treatments aim to remove the bacterial burden, however recurring peritoneal infections occur at high rates and contribute to patient morbidity. These recurring infections are likely due to the inability of lavage solutions to remove the entire massive intra-abdominal bacterial load due to intestinal perforation. Numerous antiseptic solutions and antibiotic additives have been evaluated in their ability to improve source control by abdominal …


Aptamer-Based Voltammetric Biosensing For The Detection Of Codeine And Fentanyl In Sweat And Saliva, Rosa Lashantez Cromartie Nov 2021

Aptamer-Based Voltammetric Biosensing For The Detection Of Codeine And Fentanyl In Sweat And Saliva, Rosa Lashantez Cromartie

FIU Electronic Theses and Dissertations

Despite the many governmental and medicinal restrictions created to combat the opioid epidemic in the United States, opioid abuse and overdose rates continue to rise. The development of an aptamer-based voltammetric sensor and biosensor is described in this dissertation. The aim was to develop a low-cost, sensitive, and specific aptamer-based sensor for on-site, label-free determination of codeine and fentanyl in biological fluids. To do this, the surfaces of screen-printed carbon electrodes (SPCE) were modified with gold nanoparticles (AuNPs), followed by the addition of single-stranded DNA aptamers. These were covalently bound to the electrode surface. Operations of the sensors were collected …


Insights Into The Mechanisms Of Brain Endothelial Erythrophagocytosis, Jiahong Sun, Prema Vyas, Samar Mann, Annlia Paganini-Hill, Ane C. F. Nunes, Wei Ling Lau, David H. Cribbs, Mark J. Fisher, Rachita K. Sumbria Aug 2021

Insights Into The Mechanisms Of Brain Endothelial Erythrophagocytosis, Jiahong Sun, Prema Vyas, Samar Mann, Annlia Paganini-Hill, Ane C. F. Nunes, Wei Ling Lau, David H. Cribbs, Mark J. Fisher, Rachita K. Sumbria

Pharmacy Faculty Articles and Research

The endothelial cells which form the inner cellular lining of the vasculature can act as non-professional phagocytes to ingest and remove emboli and aged/injured red blood cells (RBCs) from circulation. We previously demonstrated an erythrophagocytic phenotype of the brain endothelium for oxidatively stressed RBCs with subsequent migration of iron-rich RBCs and RBC degradation products across the brain endothelium in vivo and in vitro, in the absence of brain endothelium disruption. However, the mechanisms contributing to brain endothelial erythrophagocytosis are not well defined, and herein we elucidate the cellular mechanisms underlying brain endothelial erythrophagocytosis. Murine brain microvascular endothelial cells (bEnd.3 …


In-Line Monitoring Of Sitagliptin Dissolution Profile From Tablets Utilizing An Eco-Friendly Potentiometric Sensor, Shereen Mowaka, Manar M. Elhassan, Amr M. Mahmoud, Maha A. Hegazy Aug 2021

In-Line Monitoring Of Sitagliptin Dissolution Profile From Tablets Utilizing An Eco-Friendly Potentiometric Sensor, Shereen Mowaka, Manar M. Elhassan, Amr M. Mahmoud, Maha A. Hegazy

Pharmacy

Sitagliptin, an oral antidiabetic drug, is an effective medication for lowering blood glucose level either as monotherapy or in combination with other antidiabetic drugs. This work aims for the fabrication of a potentiometric sensor for sitagliptin detection. The sensor was designed by doping the polyvinyl chloride polymeric ion-selective membrane with calix[4]arene as an ionophore which highly improved the linearity range (1 × 10−6—1 × 10−2 M), sensitivity, selectivity and limit of detection (6.3 × 10−7 M) compared to ionophore-free membrane. The method was then validated according to the International Council for Harmonization (ICH) guidelines. The sensor was successfully employed to …


430— Ifnγ And 5-Aza Drug Effects On Hla Expression In Human Leukemia And Epidermoid Carcinoma, Nick Turnquist Apr 2021

430— Ifnγ And 5-Aza Drug Effects On Hla Expression In Human Leukemia And Epidermoid Carcinoma, Nick Turnquist

GREAT Day Posters

Human Leukocyte Antigen (HLA) is a gene that codes for cell-surface proteins that are the basis of our bodies’ immune response, and are crucial for the combatting of pathogens or infections. For our experiment we observed two cell lines, a human Leukemia cell line (HL-60), and an epidermoid carcinoma cell line A-431. Our purpose for this experiment was to observe the effects of two drugs as well as the combination of them on the expression of HLA antigens in these cancerous cell lines. The drugs being used in this experiment are Gamma interferon, which is known to increase antigen presentation …


Electrochemical Determination Of Ipragliflozin In Pure Form And In Spiked Human Plasma On A Glassy Carbon Electrode, Shereen Mowaka, Manar M. Elhassan, Amr M. Mahmoud, Maha A. Hegazy Mar 2021

Electrochemical Determination Of Ipragliflozin In Pure Form And In Spiked Human Plasma On A Glassy Carbon Electrode, Shereen Mowaka, Manar M. Elhassan, Amr M. Mahmoud, Maha A. Hegazy

Pharmacy

Ipragliflozin, a highly potent and selective sodium glucose cotransporter II inhibitor, is an effective blood glucose lowering drug in patients with type 2 diabetes mellitus by promoting urinary glucose excretion. The present work represents the first electrochemical determination of ipragliflozin that depends on the oxidation of sulfur atom present in its structure. Cyclic wave and differential pulse voltammetry were applied by scanning potential over range of 0 to 2.8 V vs the reference electrode Ag/Ag+ in non-aqueous medium. The method was developed and validated in accordance with the guidelines of the International Council for Harmonisation (ICH). With a detection limit …


Opioid Use Disorder: The Timeline For Medication Assisted Therapy, Alexander Cristofori Jan 2021

Opioid Use Disorder: The Timeline For Medication Assisted Therapy, Alexander Cristofori

Capstone Showcase

Opioid Use Disorder is patterns of opioid use leading to withdrawal, giving up important life events in order to use opioids, and excessive time spent using opioids, to name a few diagnostic criteria. The clinical progression of the disorder involves periods of acute exacerbation and remission that are cyclic in nature. Treatment is most effective when it includes both pharmacological and psychosocial modalities, referred to as medication assisted therapy (MAT). Three drugs used commonly in MAT-based treatment for OUD from oldest to newest include Methadone, Buprenorphine-naloxone, and Naltrexone. Treatment program models that prioritize total abstinence from the addictive substance attached …


A Multivariable Model Of Parent Satisfaction, Pain, And Opioid Administration In A Pediatric Emergency Department, Candice D. Donaldson, Thomas W. Heyming, Louis Ehwerhemuepha, Brooke N. Jenkins, Michelle A. Fortier, William Feaster, Zeev N. Kain Jan 2021

A Multivariable Model Of Parent Satisfaction, Pain, And Opioid Administration In A Pediatric Emergency Department, Candice D. Donaldson, Thomas W. Heyming, Louis Ehwerhemuepha, Brooke N. Jenkins, Michelle A. Fortier, William Feaster, Zeev N. Kain

Psychology Faculty Articles and Research

Introduction: Children and adolescents are not impervious to the unprecedented epidemic of opioid misuse in the United States. In 2016 more than 88,000 adolescents between the ages of 12–17 reported misusing opioid medication, and evidence suggests that there has been a rise in opioid-related mortality for pediatric patients. A major source of prescribed opioids for the treatment of pain is the emergency department (ED). The current study sought to assess the complex relationship between opioid administration, pain severity, and parent satisfaction with children’s care in a pediatric ED.

Methods: We examined data from a tertiary pediatric care facility. A health …


Cyclosporine Shows Benefit As Compared To Methotrexate For Treatment Of Pediatric Atopic Dermatitis Refractory To Topical Medications When Rapidity Of Clinical Response Is Of Key Importance To The Patient, Connor R. Buechler, Steven Daveluy Md Oct 2020

Cyclosporine Shows Benefit As Compared To Methotrexate For Treatment Of Pediatric Atopic Dermatitis Refractory To Topical Medications When Rapidity Of Clinical Response Is Of Key Importance To The Patient, Connor R. Buechler, Steven Daveluy Md

Clinical Research in Practice: The Journal of Team Hippocrates

A clinical decision report appraising El-Khalawany MA, Hassan H, Shaaban D, Ghonaim N, Eassa B. Methotrexate versus cyclosporine in the treatment of severe atopic dermatitis in children: a multicenter experience from Egypt. European Journal of Pediatrics. 2012;172(3):351-356. https://doi.org10.1007/s00431-012-1893-3 for a pediatric patient with severe atopic dermatitis.


Acute And Chronic Dosing Of A High-Affinity Rat/Mouse Chimeric Transferrin Receptor Antibody In Mice, Demi M. Castellanos, Jiahong Sun, Joshua Yang, Weijun Ou, Alexander C. Zambon, William M. Pardridge, Rachita K. Sumbria Sep 2020

Acute And Chronic Dosing Of A High-Affinity Rat/Mouse Chimeric Transferrin Receptor Antibody In Mice, Demi M. Castellanos, Jiahong Sun, Joshua Yang, Weijun Ou, Alexander C. Zambon, William M. Pardridge, Rachita K. Sumbria

Pharmacy Faculty Articles and Research

Non-invasive brain delivery of neurotherapeutics is challenging due to the blood-brain barrier. The revived interest in transferrin receptor antibodies (TfRMAbs) as brain drug-delivery vectors has revealed the effect of dosing regimen, valency, and affinity on brain uptake, TfR expression, and Fc-effector function side effects. These studies have primarily used monovalent TfRMAbs with a human constant region following acute intravenous dosing in mice. The effects of a high-affinity bivalent TfRMAb with a murine constant region, without a fusion partner, following extravascular dosing in mice are, however, not well characterized. Here we elucidate the plasma pharmacokinetics and safety of a high-affinity bivalent …


Targeting The Transferrin Receptor To Develop Erythropoietin For Alzheimer’S Disease, Rachita K. Sumbria Jun 2020

Targeting The Transferrin Receptor To Develop Erythropoietin For Alzheimer’S Disease, Rachita K. Sumbria

Pharmacy Faculty Articles and Research

"Alzheimer’s disease (AD) is the sixth leading cause of death in the United States with approximately 5.8 million Americans currently living with AD. Due to the lack of a disease modifying treatment for AD and the aging baby boomer generation, this number is projected to grow to 13.8 million by 2050 (Gaugler et al., 2019). Amyloid-beta (Aβ) plaque accumulation, one of the major pathological hallmarks of AD, can begin > 20 years before clinical symptoms of AD. By the time AD is clinically diagnosed, neuronal loss and neuropathological lesions (Aβ plaques and tau tangles) have already occurred in many brain regions …


Chrysin‐Loaded Chitosan Nanoparticles Potentiates Antibiofilm Activity Against Staphylococcus Aureus, Busi Siddhardha, Uday Pandey, K. Kaviyarasu, Rajasekharreddy Pala, Asad Syed, Ali K. Bahkali, Abdallah M. Elgorban Feb 2020

Chrysin‐Loaded Chitosan Nanoparticles Potentiates Antibiofilm Activity Against Staphylococcus Aureus, Busi Siddhardha, Uday Pandey, K. Kaviyarasu, Rajasekharreddy Pala, Asad Syed, Ali K. Bahkali, Abdallah M. Elgorban

Pharmacy Faculty Articles and Research

The application of nanotechnology in medicine is gaining popularity due to its ability to increase the bioavailability and biosorption of numerous drugs. Chrysin, a flavone constituent of Orocylumineicum vent is well‐reported for its biological properties. However, its therapeutic potential has not been fully exploited due to its poor solubility and bioavailability. In the present study, chrysin was encapsulated into chitosan nanoparticles using TPP as a linker. The nanoparticles were characterized and investigated for their anti‐biofilm activity against Staphylococcus aureus. At sub‐Minimum Inhibitory Concentration, the nanoparticles exhibited enhanced anti‐biofilm efficacy against S. aureus as compared to its bulk counterparts, chrysin …


Chlorhexidine Gluconate Vs Povidone-Iodine In The Prevention Of Clean-Contaminated Surgical Site Infections, Erin Layne, Abigail Stone Dec 2019

Chlorhexidine Gluconate Vs Povidone-Iodine In The Prevention Of Clean-Contaminated Surgical Site Infections, Erin Layne, Abigail Stone

Physician Assistant Capstones, 2016 to 2019

Abstract

Background:

A patient’s skin is the major source of pathogens that can cause post-operative complications such as surgical site infections (SSIs). Optimization of pre-operative skin antisepsis is obtained with chlorhexidine gluconate (CG) and povidone-iodine (PI). These two solutions are the most widely used antiseptics for pre-operative purposes.

Objective:

Among surgical patients greater than 18 years of age undergoing clean-contaminated surgery, which antiseptic, iodophors or chlorhexidine gluconate, is more effective at reducing postoperative surgical site infections?

Methods:

A search was done in PubMed utilizing the terms chlorhexidine, infection control, iodophors, and surgical site infection. The limits applied included randomized …


Effects Of Dabigatran In Mouse Models Of Aging And Cerebral Amyloid Angiopathy, Neethu Michael, Mher Mahoney Grigoryan, Kelley Kilday, Rachita K. Sumbria, Vitaly Vasilevko, Joanne Van Ryn, David H. Cribbs, Annlia Paganini-Hill, Mark J. Fisher Sep 2019

Effects Of Dabigatran In Mouse Models Of Aging And Cerebral Amyloid Angiopathy, Neethu Michael, Mher Mahoney Grigoryan, Kelley Kilday, Rachita K. Sumbria, Vitaly Vasilevko, Joanne Van Ryn, David H. Cribbs, Annlia Paganini-Hill, Mark J. Fisher

Pharmacy Faculty Articles and Research

Oral anticoagulants are a critical component of stroke prevention, but carry a risk of brain hemorrhage. These hemorrhagic complications tend to occur in elderly individuals, especially those with predisposing conditions such as cerebral amyloid angiopathy (CAA). Clinical evidence suggests that non-vitamin K antagonist oral anticoagulants are safer than traditional oral anticoagulants. We analyzed whether the anticoagulant dabigatran produces cerebral microhemorrhage (the pathological substrate of MRI-demonstrable cerebral microbleeds) or intracerebral hemorrhage in aged mice with and without hemorrhage-predisposing angiopathy. We studied aged (22 months old) Tg2576 (a model of CAA) and wild-type (WT) littermate mice. Mice received either dabigatran etexilate (DE) …


Developing A Dissociative Nanocontainer For Peptide Drug Delivery, Michael Patrick Kelly Sep 2019

Developing A Dissociative Nanocontainer For Peptide Drug Delivery, Michael Patrick Kelly

Dissertations, Theses, and Capstone Projects

The potency and specificity of bioactive peptides have propelled these agents to the forefront of pharmacological research. However, delivery of peptides to their molecular target in cells is a major obstacle to their widespread application. A Trojan Horse strategy of packaging a bioactive peptide within a modified protein cage to protect it during transport, and releasing it at the target site, is a promising delivery method. Recent work has demonstrated that the viral capsid of the P22 bacteriophage can be loaded with an arbitrary, genetically-encoded peptide, and externally decorated with a cell-penetrating peptide, such as HIV-Tat, to translocate across in …


Transforming Growth Factor-Β1 Decreases Β2-Agonist–Induced Relaxation In Human Airway Smooth Muscle, Christie A. Ojiaku, Elena Chung, Vishal Parikh, Jazmean K. Williams, Anthony Schwab, Ana Lucia Fuentes, Maia L. Corpuz, Victoria Lui, Sam Paek, Natalia M. Bexiga, Shreya Narayan, Francisco J. Nunez, Kwangmi An, Rennolds S. Ostrom, Steven S. An, Reynold A. Pannettieri Jr. Feb 2019

Transforming Growth Factor-Β1 Decreases Β2-Agonist–Induced Relaxation In Human Airway Smooth Muscle, Christie A. Ojiaku, Elena Chung, Vishal Parikh, Jazmean K. Williams, Anthony Schwab, Ana Lucia Fuentes, Maia L. Corpuz, Victoria Lui, Sam Paek, Natalia M. Bexiga, Shreya Narayan, Francisco J. Nunez, Kwangmi An, Rennolds S. Ostrom, Steven S. An, Reynold A. Pannettieri Jr.

Pharmacy Faculty Articles and Research

Helper T effector cytokines implicated in asthma modulate the contractility of human airway smooth muscle (HASM) cells. We have reported recently that a profibrotic cytokine, transforming growth factor (TGF)-β1, induces HASM cell shortening and airway hyperresponsiveness. Here, we assessed whether TGF-β1 affects the ability of HASM cells to relax in response to β2-agonists, a mainstay treatment for airway hyperresponsiveness in asthma. Overnight TGF-β1 treatment significantly impaired isoproterenol (ISO)-induced relaxation of carbachol-stimulated, isolated HASM cells. This single-cell mechanical hyporesponsiveness to ISO was corroborated by sustained increases in myosin light chain phosphorylation. In TGF-β1–treated HASM cells, ISO evoked markedly lower …


The Promises And Challenges Of Erythropoietin For Treatment Of Alzheimer's Disease, Jiahong Sun, Jan Michelle Martin, Victoria Vanderpoel, Rachita K. Sumbria Jan 2019

The Promises And Challenges Of Erythropoietin For Treatment Of Alzheimer's Disease, Jiahong Sun, Jan Michelle Martin, Victoria Vanderpoel, Rachita K. Sumbria

Pharmacy Faculty Articles and Research

Alzheimer’s disease (AD) is the most prevalent neurodegenerative disorder in the world, and intracellular neurofibrillary tangles and extracellular amyloid-beta protein deposits represent the major pathological hallmarks of the disease. Currently available treatments provide some symptomatic relief but fail to modify primary pathological processes that underlie the disease. Erythropoietin (EPO), a hematopoietic growth factor, acts primarily to stimulate erythroid cell production, and is clinically used to treat anemia. EPO has evolved as a therapeutic agent for neurodegeneration and has improved neurological outcomes and AD pathology in rodents. However, penetration of the blood–brain barrier (BBB) and negative hematopoietic effects are the two …