Pharmacology, Toxicology and Environmental Health Commons^™

Toxicity Of Engineered Nanomaterials To Plant Growth Promoting Rhizobacteria, Ricky W. Lewis

Theses and Dissertations--Plant and Soil Sciences

Engineered nanomaterials (ENMs) have become ubiquitous in consumer products and industrial applications, and consequently the environment. Much of the environmentally released ENMs are expected to enter terrestrial ecosystems via land application of nano-enriched biosolids to agricultural fields. Among the organisms most likely to encounter nano-enriched biosolids are the key soil bacteria known as plant growth promoting rhizobacteria (PGPR). I reviewed what is known concerning the toxicological effects of ENMs to PGPR and observed the need for high-throughput methods to evaluate lethal and sublethal toxic responses of aerobic microbes. I addressed this issue by developing high-throughput microplate assays which allowed me …

The Effects Of Manufactured Nanomaterial Transformations On Bioavailability, Toxicity And Transcriptomic Responses Of Caenorhabditis Elegans, Daniel L. Starnes

Theses and Dissertations--Plant and Soil Sciences

In recent decades, there has been a rapid expansion in the use of manufactured nanoparticles (MNPs). Experimental evidence and material flow models predict that MNPs enter wastewater treatment plants and partition to sewage sludge and majority of that sludge is land applied as biosolids. During wastewater treatment and after land application, MNPs undergo biogeochemical transformations (aging). The primary transformation process for silver MNPs (Ag-MNPs) is sulfidation, while zinc oxide MNPs (ZnO-MNPs) most likely undergo phosphatation and sulfidation. Our overall goal was to assess bioavailability and toxicogenomic impacts of both pristine, defined as-synthesized, and aged Ag- and ZnO-MNPs, as well as …

Synthesis, Characterisation And Evaluation Of Novel Antibacterial Agents, Alessandra Ghion, Christine O’Connor

Other resources

No abstract provided.

Piperlongumine (Piplartine) And Analogues: Antiproliferative Microtubule-Destabilising Agents, Mary J. Meegan, Seema M. Nathwani, Brendan Twamley, Daniela M. Zisterer, Niamh O'Boyle

Articles

Piperlongumine (piplartine, 1) is a small molecule alkaloid that is receiving intense interest due to its antiproliferative and anticancer activities. We investigated the effects of 1 on tubulin and microtubules. Using both an isolated tubulin assay, and a combination of sedimentation and Western blotting, we demonstrated that 1 is a tubulin-destabilising agent. This result was confirmed by immunofluorescence and confocal microscopy, which showed that microtubules in MCF-7 breast cancer cells were depolymerised when treated with 1. We synthesised a number of analogues of 1 to explore structure-activity relationships. Compound 13 had the best cytotoxic profile of this series, …

A Glimpse At Media-Framing Effects On Place Attachment In Rural Northwest Montana, Gregory D. Bruns

Communication & Leadership Dissertations and Theses

This study examined how outdated media framing can disturb rural place attachment. Evaluating this concept against the backdrop of south Lincoln County, Montana, which is nearing the end of a years-long EPA Superfund cleanup, over 100 regional visitors were surveyed to learn if media framing affected place-attachment sentiments. The investigation revealed that existing news stories, some up to 15 years old, may be playing a lingering and consequential role in attracting first-time destination seekers to the region, in support of framing theory. Furthermore, these findings also lend credence to the significance of sound Internet search-engine optimization practices, and provide an …

Differentially Functionalized Silver Nanoparticles Alter K Metabolism In Human Red Blood Cells, Praveen Kumar Alla

Browse all Theses and Dissertations

Silver nano particles (AgNPs) are the most frequently used nanomaterials (NMs) in industrial and biomedical applications, and extensive knowledge about their properties is fast accumulating. In addition, functionalization of nanoparticles significantly impacts their properties and potential applications. In spite the urge to produce, investigate and apply them, the toxicity of nanoparticles and their interaction with blood components, such as erythrocytes, has been insufficiently investigated. Here, we report on the effect of AgNPs in cellular function, and particularly on ion transport in human red blood cells (HRBCs). Two methods of synthesis were used for the functionalization of AgNPs, Creighton, and Lee-Meisel. …

Exploration Of Cancer Proliferative Signaling In Chemotherapy Drug Resistance And Mdig-Induced Tumorigenesis, Kai Wu

Wayne State University Dissertations

ABSTRACT

EXPLORATION OF CANCER PROLIFERATIVE SIGNALING IN CHEMOTHERAPY DRUG RESISTANCE AND MDIG-INDUCED TUMORIGENESIS

by

KAI WU

August 2016

Advisor: Dr. Fei Chen

Major: Pharmaceutical Sciences

Degree: Doctor of Philosophy

Aberrant intracellular signaling pathway is one of the major driving forces of malignancy through multiple stages of human cancers. Our study demonstrates that in cancer cells, the signaling pathways are profoundly and actively intertwined with each other so they can synergistically affect cell biology, including promoting development of malignancy and compensating the loss of proliferation or survival signals in responses to anti-tumor drug. Moreover, cancer cells can also adopt “non-canonical” mechanisms …

Structural Characterization And Therapeutic Utility Of The Proton-Coupled Folate Transporter, Michael Roy Wilson

Wayne State University Dissertations

Folate is a B9 vitamin essential to DNA synthesis. The proton-coupled folate transporter (PCFT) is a newly discovered proton/folate symporter with an acidic pH optimum and broad expression across a variety of solid tumor types, with limited expression in normal tissues. Several antifolate molecules have been developed as cancer therapeutics, although these classical antifolates display numerous off-target effects due to transport by the ubiquitous reduced folate carrier (RFC). In this dissertation, we determine the roles of multiple PCFT structure/function domains, and develop PCFT-specific antifolates to target solid tumors. We utilize substituted cysteine accessibility methods (SCAM) to identify a novel reentrant …

From Seed To Sky: Impacts Of Explosive Compounds On Vegetation Across Spatial And Developmental Scales, Stephen M. Via

Theses and Dissertations

Explosive compounds are broadly distributed across the globe as a result of nearly two centuries of munitions use in warfare and military activities. Two explosive compounds have seen disproportionate use; RDX (hexahydro-1,3,5-trinitro-1,3,5-triazine) and TNT (2-methyl- 1,3,5-trinitrobenzene), being the most commonly found explosives in the environment. The effects of explosives on biota have been studied in great detail; however, there is a general lack of understanding with regard to broader ecological impacts of these contaminants. My dissertation objective was to follow the impacts of explosive compounds on vegetation across scales. Impacts on vegetation at the species scale alter community composition via …

Molecular Docking Study Of Tyrosinase Inhibitors Using Arguslab 4.0.1 : A Comparative Study, Prasan Tangyuenyongwatana, Nathjanan Jongkon

The Thai Journal of Pharmaceutical Sciences

We conducted a docking study with ArgusLab 4.0.1, a free molecular docking software, on tyrosinase inhibitors comparing with AutoDock 4 and AutoDock VINA. In this study, hydroxyl substituted 2-phenyl-naphthalenes (a group of modified structure based on o...

Tlc-Densitometric Method For Quantitation Of Lurasidone Hydrochloride In Nanoemulsion, Microemulsion, For Equilibrium Solubility And Ex Vivo Diffusion Studies., Rashmin B. Patel, Khyati B. Vekaria, Mrunali R. Patel

The Thai Journal of Pharmaceutical Sciences

A new TLC-densitometric method has been successfully developed for quantitation of Lurasidone hydrochloride (LURHA) in pharmaceutical formulations. LURHA was well separated from sample matrix and degradation product using TLC plate; precoated with silica...

Mucus Secretion Stimulation: A Mechanism In Gastroprotective Effect Of Zingiber Officinale, Gaewbpragaan Chantharangsikul, Worawan Kitpati, Noppamas Soonthornchareonnon, Achariya Sailasuta, Arunporn Itharat, Wisuda Suvitayavat

The Thai Journal of Pharmaceutical Sciences

There are several studies on the gastroprotective effect of Z. officinale, however, the nature of this effect has not been fully elucidated. The present study investigated the gastroprotective activity and underlying mechanism of the 95% ethanolic extrac...

Validation Of An Rp-Hplc Method For Quantitative Analysis Of Phikud Navakot Extract Using The Standard Addition Method, Pavena Kumnerdnon, Pornchai Rojsitthisak, Nuansri Niwattisaiwong, Uthai Sotanaphun, Jittima Chatchawalsaisin, Narueporn Sutanthavibul

The Thai Journal of Pharmaceutical Sciences

The aim of the study was to develop a reversed phase-high performance liquid chromatography (RP-HPLC) analytical method for monitoring three analytical markers, gallic acid, vanillic acid and ferulic acid, in Phikud Navakot extract (NVK-E), using the sta...

Comparison Of Sedimentation Stability Of Ampicillin Trihydrate Suspensions Using Near Infrared Extinction Profiles, Padala Narasimha Murthy, Meduri Vimala Devi, Sudhir Kumar Sahoo, Anjan Kumar Mahapatra, Madhusmruti Khandai

The Thai Journal of Pharmaceutical Sciences

Suspensions are one of the most important and popular dosage forms. A large number of drugs are formulated in the form of suspensions and are available commercially. Stability studies of suspensions are very important to enable the patient to receive t...

Herbs Used As A Cure For Rheumatiod Arthritis: A Review, Santhosh Aruna Mamidi

The Thai Journal of Pharmaceutical Sciences

Rheumatoid arthritis is chronic, progressive, disabling autoimmune disease characterized by systemic inflammation of joints, damaging cartilage and bone around the joints. It is a systemic disease which means that it can affect the whole body and interna...

Effects Of Continuous Exposure To Bisphenol A On Male And Female Mice From Prenatally To Adulthood, Kannikar Chatsantiprapa, Tip-Arpa Sophon, Jintana Sattayasai

The Thai Journal of Pharmaceutical Sciences

BisphenolA (BPA), a monomer estrogenic chemical of many plastic products has controversial biological effects. This study assessed the effects at 0.05 mg/kg BW/day (Tolerable Daily Intake, TDI) and 0.5 mg/kg BW/day (10TDI), in male and female mice contin...

Outcomes Of Pharmaceutical Care Services In Promoting Rational Drug Use, Wanna Sriviriyanupap, Roungtiva Muenpa

The Thai Journal of Pharmaceutical Sciences

Pharmacists provide pharmaceutical care service in order to support rational drug use. However, still lack of evidence to show its outcomes. Therefore, this cross-sectional descriptive study and qualitative study were conducted to evaluate the outcomes o...

Calotropis Procera: A Phytochemical And Pharmacological Review, Neelam Balekar

The Thai Journal of Pharmaceutical Sciences

Medicinal plants are used from the ancient time as the major sources of drugs.The fact is that we can obtain many of the presently available drugs, either directly in the extract form or in the modified synthetic form. Naturally, plants have ability to s...

Effect Of Fat Content On Characteristics Of Ice Cream Fortified With Calcium And Vitamin D3, Rossarin Tansawat

The Thai Journal of Pharmaceutical Sciences

Calcium and vitamin D play important roles in bone homeostasis. Several studies reported inadequate intakes of these two nutrients in many population groups. Food fortification is one way to solve the problem. The objective of this study was to develop...

Exploring Knowledge Acquisition Technique For New Start-Up Community Food Enterprises, Wattanapong Luechoowong, Ruangthip Tantipidoke, Rungpetch Sakulbumrungsil

The Thai Journal of Pharmaceutical Sciences

Objective: This qualitative study is conducted to explore the knowledge acquisition techniques from five successful food enterprises at the new entry of community business. Methods: Five successful community food producers were purposively selected unde...