Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Nanomedicine (8)
- Dentistry (4)
- Biomedical Engineering and Bioengineering (3)
- Engineering (3)
- Life Sciences (3)
-
- Oral Biology and Oral Pathology (3)
- Other Biomedical Engineering and Bioengineering (2)
- Periodontics and Periodontology (2)
- Pharmaceutics and Drug Design (2)
- Pharmacology (2)
- Pharmacology, Toxicology and Environmental Health (2)
- Pharmacy and Pharmaceutical Sciences (2)
- Physical Sciences and Mathematics (2)
- Toxicology (2)
- Applied Mathematics (1)
- Atomic, Molecular and Optical Physics (1)
- Biological and Chemical Physics (1)
- Chemicals and Drugs (1)
- Chemistry (1)
- Computer Sciences (1)
- Immunology and Infectious Disease (1)
- Microbiology (1)
- Other Applied Mathematics (1)
- Other Chemicals and Drugs (1)
- Physical Chemistry (1)
- Physics (1)
- Keyword
-
- Nanoparticles (4)
- BAR peptide (3)
- Porphyromonas gingivalis (3)
- AS1411 (2)
- Cancer (2)
-
- Nanoparticle (2)
- BAR (1)
- Biofilm (1)
- Biofilms (1)
- Biological modeling and simulation (1)
- Breast cancer (1)
- Cancer targeting (1)
- Cannabidiol (1)
- Chemotherapy (1)
- Cisplatin (1)
- Contrast agent (1)
- DNA sensor (1)
- Delivery system (1)
- Dental plaque biofilms (1)
- Double emulsion (1)
- Drug delivery (1)
- Dual species biofilms (1)
- Electrohemical impedance spectroscopy (1)
- Electron transfer (1)
- Electrospun fibers (1)
- Exosomes (1)
- Fusion proteins (1)
- Gadolinium (1)
- Gold (1)
- Gold nanoparticle (1)
Articles 1 - 11 of 11
Full-Text Articles in Nanotechnology
Exosomal Cannabidiol: A Promising Candidate For Targeted Oral Delivery Against Breast Cancer., Disha Nagesh Moholkar
Exosomal Cannabidiol: A Promising Candidate For Targeted Oral Delivery Against Breast Cancer., Disha Nagesh Moholkar
Electronic Theses and Dissertations
Cancer therapies are limited by lack of specificity, selectivity and numerous adverse effects. Repurposing potential anticancer compounds with appropriate drug carriers can help overcome these drawbacks. In our present study, we address the major obstacle for cannabidiol (CBD): its low oral bioavailability, using exosomes. Exosomes (Exo) are promising non-toxic and biocompatible drug delivery vehicles Our project aims are to address the research gap by formulating exosomal cannabidiol (ExoCBD): a tumor-targeted oral delivery system for the treatment of breast cancer. The targeting approach relies on the overexpression of folate receptors at the tumor site by using folic acid functionalized exosomes (FA-Exo). …
Electrochemical Modulation Of Surface Plasmon Wave To Investigate Dna-Based Sensing Platforms And Detection Of Sars-Cov2., Anil Sharma
Electronic Theses and Dissertations
This study offers a thorough comparative analysis of optical and electrical signaling strategies for assessing the electrochemical properties of different redox-labeled DNA-based biosensing platforms. In addition, it illustrates the development of an optical interrogation technique with electrochemical modulation of surface plasmon waves (ECM-SPW) as a route for analyzing and implementing DNA-based hybridization sensors. For those quantitative analyses, we chose a model sensing platform composed of a methylene blue (MB)-modified single-stranded DNA (ssDNA) signaling probe and an unlabeled capture ssDNA probe that complements the signaling probe. Two types of signaling probes were employed in this work: one with MB attached to …
The Impact Of Pegylation On Cellular Uptake And In Vivo Biodistribution Of Gold Nanoparticle Mri Contrast Agents., Nagwa El-Baz
The Impact Of Pegylation On Cellular Uptake And In Vivo Biodistribution Of Gold Nanoparticle Mri Contrast Agents., Nagwa El-Baz
Electronic Theses and Dissertations
Gold nanoparticles (GNPs) have become a pivotal platform for the delivery of pharmaceutical and diagnostic agents as well as for general therapeutic purposes. Despite their potential for use in biomedicine, their interaction with serum proteins is crucial as it could change their biological profile due to the formation of a protein corona, which can affect their delivery to target tissues in the body. Grafting the GNPs with polyethylene glycol (PEG) is widely used in research to decrease opsonization of the particles by serum proteins and decrease the uptake by the reticuloendothelial system. Here in this dissertation, we have developed a …
Electrospun Fibers And Nanoparticles For The Prevention Of Sexually Transmitted Infections., Kevin Michael Tyo
Electrospun Fibers And Nanoparticles For The Prevention Of Sexually Transmitted Infections., Kevin Michael Tyo
Electronic Theses and Dissertations
Human immunodeficiency virus-1 (HIV-1) and herpes simplex virus 2 (HSV-2) affect hundreds of millions of people worldwide, with women disproportionately impacted by these infections. Currently, only oral pre-exposure prophylaxis (PrEP) is approved specifically for the prevention of HIV-1, but is challenged with adverse side effects associated with long-term use. Topical delivery platforms, such as gels and films, deliver agents directly to the female reproductive tract, but are limited in providing transient-release. The technology of polymeric electrospun fibers may serve as alternative topical delivery platform to the female reproductive tract. In these studies, we fabricated electrospun fibers comprised of different polymers …
Development Of Bar-Peptide Nanoparticles And Electrospun Fibers For The Prevention And Treatment Of Oral Biofilms., Mohamed Yehia Mahmoud
Development Of Bar-Peptide Nanoparticles And Electrospun Fibers For The Prevention And Treatment Of Oral Biofilms., Mohamed Yehia Mahmoud
Electronic Theses and Dissertations
Background: Periodontal diseases are globally prevalent inflammatory disorders that affect ~47% of U.S adults. Porphyromonas gingivalis (Pg) has been identified as a “keystone” pathogen that disrupts host-microbe homeostasis and contributes to the initiation and progression of periodontitis. Pg associates with oral streptococci in supragingival plaque and this interaction represents a potential target for therapeutic intervention. Previously our group developed a peptide (designated BAR), that potently inhibits Pg/Streptococcus gordonii (Sg) adherence in vitro and Pg virulence in a murine model of periodontitis. While efficacious, BAR (SspB Adherence Region) provided transient inhibition and required higher concentrations of BAR to disrupt established …
Synthesis And Characterization Of Targeted Bar Encapsulated Polylactic-Co-Glycolic Acid Nanoparticles To Inhibit Porphyromonas Gingivalis Biofilm Formation., Ranjith Radha Krishnan
Synthesis And Characterization Of Targeted Bar Encapsulated Polylactic-Co-Glycolic Acid Nanoparticles To Inhibit Porphyromonas Gingivalis Biofilm Formation., Ranjith Radha Krishnan
Electronic Theses and Dissertations
Periodontal disease is one of the most prevalent infectious diseases worldwide. Between 30-50% of the global adult population suffers from periodontal disease. Some form of periodontitis is present in 46% of American adults, corresponding to annual expenditures in excess of 14 billion dollars for treatment and prevention. Current treatments for periodontal diseases involve mechanical removal of plaque, correction of risk factors, gingival surgery and/or antibiotic therapy. To our knowledge there is no effective therapeutic approach that aims to limit pathogen colonization of the oral biofilm or re-colonization after treatment. Interaction of the pathogen Porphyromonas gingivalis with oral streptococci is critical …
A Cancer-Targeted Gold Nanoparticle-Based Mri Contrast Agent., Nagwa El-Baz
A Cancer-Targeted Gold Nanoparticle-Based Mri Contrast Agent., Nagwa El-Baz
Electronic Theses and Dissertations
In oncology, imaging plays a major role in terms of early detection and treatment of most types of cancer. Magnetic resonance imaging (MRI) is mostly used for cancer diagnosis due to its excellent contrast resolution. However, MRI for cancer diagnosis is somewhat limited by its sensitivity. In this thesis, we assessed the ability of theranostic platform consisting of gold nanoparticles functionalized with a cancer targeting aptamer; AS1411 and gadolinium chelate (Dotarem thiol derivative; Gd (III)-DO3A) as a MRI contrast agent to target malignant tumors by enhancing the MRI contrast of the detected tumor. The proposed technology is a novel injectable …
Evaluation Of Drug-Loaded Gold Nanoparticle Cytotoxicity As A Function Of Tumor Tissue Heterogeneity., Hunter Allan Miller
Evaluation Of Drug-Loaded Gold Nanoparticle Cytotoxicity As A Function Of Tumor Tissue Heterogeneity., Hunter Allan Miller
Electronic Theses and Dissertations
The inherent heterogeneity of tumor tissue presents a major challenge to nanoparticle-medicated drug delivery. This heterogeneity spans from the molecular to the cellular (cell types) and to the tissue (vasculature, extra-cellular matrix) scales. Here we employ computational modeling to evaluate therapeutic response as a function of vascular-induced tumor tissue heterogeneity. Using data with three-layered gold nanoparticles loaded with cisplatin, nanotherapy is simulated with different levels of tissue heterogeneity, and the treatment response is measured in terms of tumor regression. The results show that tumor vascular density non-trivially influences the nanoparticle uptake and washout, and the associated tissue response. The drug …
Synthesis Of A Nanoscale Gold-Coated, Thermoresponsive Molecular Release System., Ryan C. Weegens
Synthesis Of A Nanoscale Gold-Coated, Thermoresponsive Molecular Release System., Ryan C. Weegens
College of Arts & Sciences Senior Theses
The work presented here was performed in conjunction with an experimental group in order to prove the concept that an alternating magnetic field (AMF) could be used to induce an intramolecular cyclization to effect payload release. The system studied here consisted of a fluorophore tethered to gold-coated iron oxide nanoparticles (Fe3O4 NPs) via an organic linker consisting of 2 key elements: a carbonate (electrophile) and an amine (nucleophile). Connected to the carbonate was the fluorophore, anthracene, which was attached to the organic linker system by means of an oxime ether linkage. This thesis work served as the …
Mechanism Of Interaction Of Peptide Modified Nanoparticles With Porphyromonas Gingivalis., Ankita Jain
Mechanism Of Interaction Of Peptide Modified Nanoparticles With Porphyromonas Gingivalis., Ankita Jain
Electronic Theses and Dissertations
Studies suggest that P. gingivalis functions as a keystone pathogen and interacts with primary colonizers in the supragingival biofilm such as S. gordonii. This interaction contributes to the initial colonization of the oral cavity by P. gingivalis and thus represents a potential target for therapeutic intervention. We have identified a peptide (BAR) derived from the streptococcal SspB protein that functions to inhibit P. gingivalis adherence to S. gordonii. In addition, we showed that nanoparticles (NPs) functionalized with BAR inhibit this interaction more potently than free soluble peptide, possibly by promoting interaction with P. gingivalis at higher valency than …
Synthesis And Functional Evaluation Of Peptide Modified Poly (Lactic-Co-Glycolic Acid) Nanoparticles To Inhibit Porphyromonas Gingivalis Biofilm Formation., Paridhi Kalia
Electronic Theses and Dissertations
Periodontal disease is an oral inflammatory disorder that afflicts roughly 46% of the adults in the U.S. Currently, treatment of periodontal disease involves the removal of plaque from the gingival pocket (with possible antibiotic treatment) and if necessary, gingival surgery. To our knowledge, no therapeutic approach exists that promotes host-biofilm homeostasis by limiting pathogen recolonization of the oral cavity after prophylaxis or treatment. The interaction of the pathogen Porphyromonas gingivalis with commensal streptococci is critical for initiation of periodontitis and represents a target for limiting P. gingivalis colonization of the oral cavity. Previous studies showed that a synthetic peptide …