The Antioxidant And Antimicrobial Activities Of Cornsilk Extract Encapsulated In Polysaccharide Nanoparticles, Maryam Mady

Theses and Dissertations

Corn silk possess antibacterial and antioxidant activities due to its phenolic compounds but they are of low bioavailability that requires some innovative techniques to develop such active ingredients in a safe and less toxic manner. Accordingly, silk extract SE was encapsulated in chitosan nanoparticles CS NPs, which is a natural and abundant polymer derived from chitin. Among 15 experimental trials via design expert software, the optimum formula of SE x\CS NPs was prepared at 800 rpm, 5hrs. on magnetic stirrer, and by CS: TPP ratio was 2.5:1. Then SEM showed the majority of particles size diameter in the range of …

Zein And Lignin-Based Nanoparticles As Delivery Systems: Pesticide Release And Nanoparticle Health Impact On Soybean Plants, Fallon Polette Salinas Gonzalez

LSU Doctoral Dissertations

This research examined the effect of biodegradable, polymeric, lignin-based nanoparticles (LNPs, 113.8±3.4, negatively charged) and zein nanoparticles (ZNP, 141.6±3.9, positively charged) on soybean plant health. The LNPs were synthesized from lignin, covalently linked to poly(lactic-co-glycolic) acid by emulsion evaporation. ZNPs were synthesized by nanoprecipitation. Soybeans grown hydroponically were treated with three concentrations (0.02, 0.2, and 2 mg/ml) of NPs at 28 days after germination. The effect of ZNPs and LNPs on plant health was determined through analysis of root and stem length, chlorophyll concentration, dry biomass of roots and stem, as well as carbon, nitrogen, and micronutrient absorption after 1, …

Big Data Analysis Of Nanoscience Bibliometrics, Patent, And Funding Data (2000-2019), Yuliang Zhao, Zhixiang Wei, Qing Dai, Hongwei Dong, Hongjun Xiao, Shuxian Wu, Xingxing He, Beverley Mitchell, Thomas A. Collins, Sarah Huggett, John Van Orden, Christiane Barranguet, Basak Candemir

Public Reports

Given the strategic significance of Nanoscience and nanotechnology, it is essential to evaluate and predict its developmental trends. This report is based on the largest abstract and citation database of peer-reviewed literature, Elsevier's Scopus, along with the research evaluation platform SciVal. The funding and patent analysis data for the report is from Funding Institutional and PatentSight, respectively. This report provides an evaluation of Nanoscience's scientific output, role, contribution, and impact through bibliometric analysis, combined with big data indicators of Nanoscience scientific results and patents from 2000 to 2019.

Amphiphilic Cell-Penetrating Peptides Containing Natural And Unnatural Amino Acids As Drug Delivery Tools And Antimicrobial Agents, David Salehi

Pharmaceutical Sciences (MS) Theses

Cell-penetrating peptides containing arginine as positively charged residues and tryptophan or diphenylalanine as hydrophobic residues were synthesized. The synthesis was accomplished through the Fmoc solid-phase peptide synthesis in the presence of HBTU and DIPEA. The side-chain protected linear peptides were cleaved from the resin and cyclized in the presence of DIC and HOAt in the solution phase overnight. MALDI-TOF mass spectrometry was used to characterize the peptides.

The cytotoxicity of the synthesized peptides was determined in CCRF-CEM (human, lymphoblast peripheral blood), and HEK-293 (human, embryonic epithelial kidney healthy) cells using the MTS assay. A concentration of 10 µM was found …

Inventions Of Scientists, Engineers And Specialists From Different Countries In The Area Of Nanotechnologies. Part Vi, Leonid A. Ivanov, Li D. Xu, Konstantin E. Razumeev, Zhanna V. Pisarenko, Aleksey V. Demenev

Information Technology & Decision Sciences Faculty Publications

Introduction. Advanced technologies impress people's imagination demonstrating the latest achievements (materials, methods, systems, technologies, devices etc.) that dramatically change the world. This, first of all, concerns nanotechnological inventions designed by scientists, engineers and specialists from different countries. Main part. The article provides an abstract overview of inventions of scientists, engineers and specialists from different countries: Russia, USA, China, Kazakhstan, Sweden. The results of the creative activity of scientists, engineers and specialists, including inventions in the field of nanotechnology and nanomaterials allow, when introduced to industry, achieving a significant effect in construction, housing and communal services, and related sectors of the …

Interactions Between Gold Nanoparticles And Immunoglobulin Isotypes, Rick Hassan

Electronic Theses and Dissertations, 2020-2023

Gold Nanoparticles have piqued interest for use in a wide range of diagnostic and therapeutic applications including biosensors, assays, vaccine development, drug delivery, and photothermal therapy. While extensive research has been conducted, the applications of gold nanoparticles have yet to see the same level of commercial success as well-established methods such as ELISA and lateral flow immunoassays. Studies analyzing the efficacy of gold nanoparticle technologies in vivo and in vitro provide seemingly conflicting results that reflect a further need for investigation into the biological response of gold nanoparticles. A large factor in the variation is the nature of the interaction …

Overcoming Mechanisms Of Acquired And Innate Doxorubicin Resistance Using Nanomedicine And Tumor-Associated Macrophage Immunotherapy, Rashed M. Almuqbil

Theses and Dissertations

ABSTRACT

Overcoming Mechanisms of Acquired and Innate Doxorubicin Resistance Using Nanomedicine and Tumor-Associated Macrophage Immunotherapy

By Rashed M. Almuqbil, Pharm.D.

Director: Sandro R.P. da Rocha, PhD

Cancer is a leading cause of death worldwide. The available treatment for solid tumors may include surgery, radiotherapy, immunotherapy, and chemotherapy or a combination of all those regimens. Chemotherapy is widely used in the treatment of both lung cancers and breast cancer, including metastases, irrespective of type and stage. The poor rates of survival can be attributed to late diagnosis, and due to the development of acquired and innate chemoresistance. Lung tumors are intrinsically …

Chitosan-Gallium Nanocomposite: Synthesis, Characterization And Antibacterial Activity, Samjhana Bhandari

Electronic Theses and Dissertations, 2020-2023

The emergence of multidrug-resistant (MDR) strains of bacteria and the lack of a novel class of antibiotics has become a global health concern. Pseudomonas aeruginosa is one common MDR bacteria responsible for nosocomial infections and related mortality worldwide. It has developed resistance against commonly available antibiotics and is in the WHO's priority list of bacteria for which new antibiotics are desperately needed. Currently there is a growing interest in developing metal and non-metal-based nanoparticles to target multidrug-resistant bacteria. The objective of this study is to evaluate the efficacy of a novel nanocomposite of two non-traditional antimicrobials: a metal (Ga-III) and …

Fabrication And Characterization Of Agarwood Extract-Loaded Nanocapsules And Evaluation Of Their Toxicity And Anti-Inflammatory Activity On Raw 264.7 Cells And In Zebrafish Embryos, Eman Ramadan, Manar A. Eissa, Noha Badawi

Pharmacy

Aquilaria malaccensis has been traditionally used to treat several medical disorders including inflammation. However, the traditional claims of this plant as an anti-inflammatory agent has not been substantially evaluated using modern scientific techniques. The main objective of this study was to evaluate the anti-inflammatory effect of Aquilaria malacensis leaf extract (ALEX-M) and potentiate its activity through nano-encapsulation. The extract-loaded nanocapsules were fabricated using water-in-oil-in-water (w/o/w) emulsion method and characterized via multiple techniques including DLS, TEM, FTIR, and TGA. The toxicity and the anti-inflammatory activity of ALEX-M and the extract-loaded nanocapsules (ALEX-M-PNCs) were evaluated in-vitro on RAW 264.7 macrophages …

Systematic Review Shows Tele-Rehabilitation Might Achieve Comparable Results To Office-Based Rehabilitation For Decreasing Pain In Patients With Knee Osteoarthritis, Tamila Latif-Zade, Brian Tucci, Danna Verbovetskaya, Elizabeth Bialkin, Brian Ng, Stephan Heddon, Jean-Philippe Berteau

Advanced Science Research Center

Background and Objectives: This systematic review aims to evaluate the efficacy of Tele- Rehabilitation for decreasing pain in patients with knee osteoarthritis (OA). Materials and Methods: Following the guidelines of Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA), three electronic databases (CINAHL, PubMed, PEDro), along with the addition of grey literature, were used to collect information. Randomized control trials (RCTs) comparing tele- rehabilitation (TR) to office-based-rehabilitation (OB) were critically appraised using the 2005 Uni- versity of Oxford Standard. A total of 139 articles (PubMed = 132, CINAHL = 5, PEDro = 0, grey literature = 2) were acquired. Results: …

Development Of Light Actuated Chemical Delivery Platform On A 2-D Array Of Micropore Structure, Hojjat Rostami Azmand, Hojjat Rostami Azmand

Dissertations and Theses

Localized chemical delivery plays an essential role in the fundamental information transfers within biological systems. Thus, the ability to mimic the natural chemical signal modulation would provide significant contributions to understand the functional signaling pathway of biological cells and develop new prosthetic devices for neurological disorders. In this paper, we demonstrate a light-controlled hydrogel platform that can be used for localized chemical delivery in a high spatial resolution. By utilizing the photothermal behavior of graphene-hydrogel composites confined within micron-sized fluidic channels, patterned light illumination creates the parallel and independent actuation of chemical release in a group of fluidic ports. The …

Single-Molecule Investigation Of I-Motif Folding And Dynamics In Bioinspired Dna Platforms, Anoja Megalathan

Theses and Dissertations

Although the canonical right-handed B-DNA is the predominant form of DNA in cells, DNA can adopt other secondary structures such as hairpins, G-quadruplexes (G4), and intercalated motifs (i-motif). These secondary structures are typically formed in the regions with repeat sequences. Among many secondary structures DNA can adopt, G-quadruplexes and i-motifs (tetraplex structures formed in the G-rich and C-rich sequences, respectively) caught significant research interest in recent years due to the prevalence of G-rich and C-rich sequences in the human genome. While G-quadruplexes are extensively studied, little is known about i-motifs – especially their formation and stability under cellular environments. For …

Copper Sulfide Manganese Nanoparticles For Multimodality Imaging And Therapy, Ali S. Gawi Ermi

Theses and Dissertations

Abstract

COPPER SULFIDE MANGANESE NANOPARTICLES FOR MULTIMODALITY IMAGING AND THERAPY

By Ali S. Gawi Ermi, MSc

Inorganic nanoparticles (NPs) are compatible with metal-based multi-modality molecular imaging and targeted therapy. Copper sulfide nanoparticles (CuS NPs) are attractive photoacoustic and photothermal agents and are amenable to incorporation of radionuclides and paramagnetic elements to facilitate image-guided therapy. The aim of this work is to develop manganese (Mn)- doped CuS NP, intrinsically radiolabeled with radionuclides such as (Zirconium-89 (⁸⁹Zr), Copper-64/67 (^64/67Cu) and Manganese-52/55 (^52/55Mn)). This novel approach combines Photoacoustic (PA), Positron emission tomography (PET), Single-photon emission computed tomography …

Dendrimer-Based Antibiotics For The Treatment Of Bacterial Biofilm In Cystic Fibrosis (Cf), Younan Ma

Theses and Dissertations

Pseudomonas aeruginosa (PA) is the predominant pathogen in chronic lung infections of cystic fibrosis (CF) patients. The most important mechanism of adaptation of PA to host defense and antibiotic treatment is the formation of biofilms within the mucus layer covering the lung bronchi. The effectiveness of antibiotics such as aminoglycosides is significantly attenuated by their limited penetration through thick mucus and embedded biofilm matrix in patients’ lung. Inhaled tobramycin (Tobra), which is the most commonly used antibiotics in the treatment of PA infections for CF patients, is usually found to be in very high concentration in patients’ lung, and yet …

Nebulizer-Based Systems To Improve Pharmaceutical Aerosol Delivery To The Lungs, Benjamin M. Spence

Theses and Dissertations

Combining vibrating mesh nebulizers with additional new technologies leads to substantial improvements in pharmaceutical aerosol delivery to the lungs across therapeutic administration methods. In this dissertation, streamlined components, aerosol administration synchronization, and/or Excipient Enhanced Growth (EEG) technologies were utilized to develop and test several novel devices and aerosol delivery systems. The first focus of this work was to improve the poor delivery efficiency, e.g., 3.6% of nominal dose (Dugernier et al. 2017), of aerosolized medication administration to adult human subjects concurrent with high flow nasal cannula (HFNC) therapy, a form of continuous-flow non-invasive ventilation (NIV). The developed Low-Volume Mixer-Heater (LVMH) …

Live Cell Biomass Tracking For Basic, Translational, And Clinical Research, Graeme Murray

Theses and Dissertations

Single cell mass is tightly regulated throughout generations and the cell cycle, making it an important marker of cell health. Abnormal changes in cell size can be the first indication of dysfunction in response to environmental stimuli such as cytotoxic drugs. Described here is the further development of high-speed live cell interferometry (HSLCI) to concurrently measure the changes in single cell mass of thousands of cells over time. Critically, the high-throughput nature of HSLCI provides realistic pictures of tumor heterogeneity. This throughput enabled HSLCI to correctly predict in vivo carboplatin sensitivity of three triple negative breast cancer patient derived xenografts, …

Assessing A National Nanotechnology Infrastructure For Enforcing Nanosafety In Consumer Food - Funding The Infrastructure, Gordon Chambers, E. Mccarron

Articles

. Crucial to assessing any national risk assessment infrastructure is the development of keen insights into the funding landscape, the base skill set and expertise levels, risk prioritisation, and stakeholder determination. This paper presents an overview of the first of these criteria with respect to the Irish funding landscape for nanotechnology and nano-agri-food. It examines difficulties with policy enforcement due to a lack of clarity and varying interpretations of the EU definition of nanomaterials and how the funding landscape could potentially facilitate the necessary infrastructure, to underpin regulatory enforcement and risk assessment for nanotechnology in food. In 2008 an assessment …

Design, Synthesis And Applications Of Nanoparticles In Suppression Of Mosquito-Born Flaviviridae Viruses, Maria R. Blahove

College of Graduate Studies: Theses & Dissertations

Recently, nanoparticles have become an origin of exploration in the chemistry field due to their unique medical uses. The current drug delivery models of nanoparticles often include a metal base with a drug conjugated to its surface. However this raises concerns regarding toxicity. A novel approach to solving this dilemma is the development of nanosized biocompatible polymer-based micelles, created from PEG-PCL-PEG triblock polymer, and formed around a drug of choice. The goal is to create a drug carrier nanoparticle system that is labile at a specific intracellular pH, without undue toxicity to the cell. This creates a drug-loaded nanoparticle that …

Investigation Of Novel Mitoneet Ligand Nl-1 As A Therapeutic For Cerebral Ischemia And Reperfusion Injury, Pushkar Saralkar

Graduate Theses, Dissertations, and Problem Reports (ETD)

Cerebral ischemia reperfusion injury, a common type of stroke, is a neurodegenerative disorder which is the leading cause of permanent disability in the United States. The underlying pathophysiology of ischemic stroke involves an occlusion in the vasculature supplying oxygen and glucose to the brain tissue, leading to infarction and eventual necrosis in the brain. MitoNEET is an outer mitochondrial protein that plays a role in the cellular bioenergetics and its redox physiology. Although its endogenous ligands are under investigation, mitoNEET binds molecules with a thiazolidinedione moiety, such as NL-1. This dissertation investigates NL-1 as a potential cytoprotective agent, and its …

The Possible Protective Role Of Vitamin E On The Induced Silver Nanoparticles Toxicity On Filiform And Circumvallate Tongue Papillae Of Albino Rats Histological And Immunohistochemical Study, Nada Tarek Zaki, Mahmoud Al Ankily, Reham Magdy Amin, Ahmed Mahmoud Halawa

Dentistry

Recently Silver nanoparticles (AgNPs) are widely used as in manufacturing of filters to purify drinking water, as a part of surgical prosthesis, splints, dental alloys and most importantly in the medical field as a bactericidal, fungicidal and as a therapeutic agent. Although these widely usage of AgNPs, can induce toxicity. to evaluate the protective role of vitamin Eon the induced silver nanoparticles toxicity on filiform and circumvallate tongue papillae of albino rats. twenty-eight male albino rats weighing 200-250 grams were divided into; the control and the experimental groups, which is subdivided into, subgroup I receiving AgNPs and subgroup II receiving …