Pharmacology, Toxicology and Environmental Health Commons^™

Development Of Culturing Methods For Native Mayfly Taxa For Use In Laboratory Toxicity Testing, Kevin Nicholas Rowsey

Theses, Dissertations and Capstones

Salinity is increasing in freshwaters throughout the world due to anthropogenic impacts with the implication of the increases to biological communities only now being realized. Declining mayfly populations in Appalachian streams have generated increased interest in elevated dissolved solids in that region and their effect on benthic macroinvertebrates, particularly the sensitive Ephemeroptera taxa. Field and laboratory evaluations have indicated high sensitivity of mayflies to elevated dissolved solids. The research described herein is part of an ongoing effort to provide opportunity for toxicity testing with native mayflies in the laboratory. A successful endeavor would establish mayfly sensitivity to total dissolved solids …

Repeated Effects Of The Neurotensin Receptor Agonist Pd149163 In Three Animal Tests Of Antipsychotic Activity: Assessing For Tolerance And Cross-Tolerance To Clozapine, Shinnyi Chou, Collin Davis, Sean Jones, Ming Li

Department of Psychology: Faculty Publications

Neurotensin is an endogenous neuropeptide closely associated with the mesolimbic dopaminergic system and shown to possess antipsychotic-like effects. In particular, acute neurotensin receptor activation can inhibit conditioned avoidance response (CAR), attenuate phencyclidine (PCP)-induced prepulse inhibition (PPI) disruptions, and reverse PCP-induced hyperlocomotion. However, few studies have examined the long term effects of repeated neurotensin receptor activation and results are inconsistent. Since clinical administration of antipsychotic therapy often requires a prolonged treatment schedule, here we assessed the effects of repeated activation of neurotensin receptors using an NTS1 receptor selective agonist, PD149163, in 3 behavioral tests of antipsychotic activity. We also investigated whether …

Behavior Of Gold Nanoparticles In Physiological Environment And The Role Of Agglomeration And Fractal Dimension, Rose Cooper

Browse all Theses and Dissertations

The Present study was designed to examine the role of agglomeration, density and the resulting fractal dimension of nanomaterials in cell culture media. Studies were completed on the kinetics and the process of agglomeration, as well as how to calculate fractal dimensions. The correlation of such complex agglomeration patterns of nanomaterials in culture media, their translocation into cells, and toxic effects were observed. Our results showed that smaller primary particles agglomerated at an accelerated rate when compared to the larger primary particles. They also demonstrated increased cellular uptake, but exhibited lower fractal dimensions. The larger primary particle agglomerates displayed obvious …

The Effect Of Silver Nanoparticles On Synaptic Responses In The Lateral Giant Escape Circuit Of The Crayfish, Samantha N. Adkins

Theses, Dissertations and Capstones

The lateral giant neuron in the crayfish is a neuron that controls the reflexive escape response; the context and experience-dependent tuning of this response is critical for survival. Serotonin modulates synaptic responses in this neuron, and social experiences (stress) changes the modulatory role of serotonin. I investigated the mechanisms of induced synaptic response changes and serotonergic modulatory changes after silver nanoparticle exposure to ask if 1) contaminant induced stress changes serotonergic modulation in a manner consistent with social stress and 2) shed light on potential neurotoxic effects of widely used, but poorly understood nanomaterials. Our data show that stress induced …

Acute Toxicity Assessment Of N,N-Diethyl-M-Toluamide (Deet) On The Photosynthetic Activity Of The Dinoflagellate Gymnodinium Instriatum, Eloy Martinez, Sylvia Velez, Marietta Mayo, Miguel Sastre

Faculty Research & Creative Activity

Despite the ubiquitous occurrence of N, N-diethyl-m-toluamide (DEET) in aquatic systems, assessments evaluating the toxicity of DEET on phytoplankton species are summed to a single study on a unicellular green alga. In particular, the toxicological effects of DEET in dinoflagellates are unknown. In this study, we employed the mixotrophic dinoflagellate Gymnodinium instriatum as a study system to evaluate acute effects of DEET on the oxygen flux of laboratory cultures. This study reports an inhibitory reaction model of DEET described by the equation y = 4.99 x 0.54, where y represents the percent inhibition of oxygen flux and x represents DEET …

Using A Novel Optogenetic Approach To Directly Assess 5-Ht1a Somatodendritic Autoreceptor Function In Response To Chronic Selective Serotonin Reuptake Inhibitor Treatment, Kelly Marie Mcgregor

Wayne State University Dissertations

Antidepressant drugs are widely used but their mechanism of action remains only partially understood. One leading hypothesis holds that a key effect of chronic treatment with a Selective Serotonin Reuptake Inhibitor (SSRI) is loss of somatodendritic 5-HT1A receptor-mediated autoinhibition in serotonergic neurons of the dorsal raphe nucleus (DRN). However, technical limitations have prevented direct testing of this hypothesis. In the current study we took advantage of optogenetic strategies to assess the effects of the classic SSRI fluoxetine on 5-HT1A receptor-mediated autoinhibition. We conducted these experiments in mice expressing the light-sensitive ion channel Channelrhodopsin (ChR) in 5-HT neurons to facilitate their …

A Systematic Review And Meta-Regression Analysis Of Lung Cancer Risk And Inorganic Arsenic In Drinking Water., Steven H. Lamm, Hamid Ferdosi, Elisabeth K. Dissen, Ji Li, Jaeil Ahn

Epidemiology Faculty Publications

High levels (> 200 µg/L) of inorganic arsenic in drinking water are known to be a cause of human lung cancer, but the evidence at lower levels is uncertain. We have sought the epidemiological studies that have examined the dose-response relationship between arsenic levels in drinking water and the risk of lung cancer over a range that includes both high and low levels of arsenic. Regression analysis, based on six studies identified from an electronic search, examined the relationship between the log of the relative risk and the log of the arsenic exposure over a range of 1-1000 µg/L. The …

An Exploratory Study Of Dog Park Visits As A Risk Factor For Exposure To Drug-Resistant Extra-Intestinal Pathogenic E. Coli (Expec)., Lubna N. Ahmed, Lance B. Price, Jay P. Graham

Environmental and Occupational Health Faculty Publications

Background

Extraintestinal pathogenic E. coli (ExPEC) are common causative agents of urinary tract infections in humans. Dogs have been found to harbor ExPEC. This study tested stool samples from dogs (n = 16), the shoes of dog park visitors (n = 16) and the shoes of controls (n = 16) for ExPEC. Phenotypic resistance of isolates was characterized.

Findings

ExPEC were present in one-third of the dog stool samples, 9% of the samples from the shoes of dog park visitors and 6% of control samples. Half of the ExPEC isolates were multi-drug resistant.

Discussion

The findings suggest that dogs may …

Short Native Α-Helical Cationic Antimicrobial Peptides: Promising Alternative Antibiotics, Jiraphun Jittikoon

The Thai Journal of Pharmaceutical Sciences

No abstract provided.

Synthesis And Characterization Of Sodium Alginate Conjugate: Preparation And Evaluation Of Transdermal Patches Of Losartan Potassium Using Sodium Alginate Conjugate, Satheesha Babu Bk, Srinivasa Rao K

The Thai Journal of Pharmaceutical Sciences

No abstract provided.

Relationship Between Carbamazepine Concentrations In Serum And Saliva Of Thai Epileptic Patients, Piyaporn Kaewdoung, Chartchai Puripokai, Chartchai Puripokai, Mayuree H. Tantisira, Somsong Laanwprasert

The Thai Journal of Pharmaceutical Sciences

This study aims to examine and verify the correlation between serum and saliva carbamazepine concentrations in Thai epileptic patients. The subjects were patients aged 15-60 years old who were under treatment with carbamazepine. Carbamazepine concentrati...

Development And Validation Of A Stability-Indicating Ultra-Performance Liquid Chromatographic Method For The Determination Of Rifampicin In Bulk Drug And Capsules, N. Swamy, K. Basavaiah, P. Vamsikrishna, G. Krishnamurthy

The Thai Journal of Pharmaceutical Sciences

A rapid method based on ultra-performance liquid chromatography (UPLC) was developed and validated for the specific determination of anti-tuberculosis drug rifampicin (RIF) in bulk form and capsules. The UPLC determination was carried out on a reversed-p...

Synthesis Of Novel Fused Heterocyclic Pyrazolo-Pyridazine Derivatives As Antimicrobial Agents, M. Alam, M. S. Zaman, K. Arora, A. Ahmad, S. A. Khan, A. Husain

The Thai Journal of Pharmaceutical Sciences

A series of pyrazolo-pyridazine derivatives (4a-j) were synthesized and evaluated for their antimicrobial activities with an aim to obtain promising antimicrobial agents. In the first step, 6-substituted phenyl-2,3,4,5- tetrahydropyridazin-3-one (2a,b) w...

Application Of Proteoglycans From Fish Cartilage For The Acceleration Of Burn Wound Healing, Sitthiphon Bunman, Pornanong Aramwit, Noppadol Larbcharoensub, Pasarapa Towiwat

The Thai Journal of Pharmaceutical Sciences

Cartilage contains a variety of proteoglycans (PGs) that can accelerate wound healing. The aim of this study was to evaluate the efficacy of proteoglycans extracted from fish cartilage for the acceleration of burn wound healing. Second degree burn wounds...

Evaluation Of Anti-Anxiety Activity Of Melissa Parviflora (Benth.) In Rats, Kundan Singh Bora, Aruna Dubey

The Thai Journal of Pharmaceutical Sciences

Melissa parviflora Benth. (Family: Lamiaceae) has been traditionally used as a tranquillizer, relaxants, nervine and sleeping aids throughout the world. The plant is reported to relieve tension and stress reactions, and widely valued for its calming prop...

In Vitro Biological Activities Of Black Pepper Essential Oil And Its Major Components Relevant To The Prevention Of Alzheimer’S Disease, Pattamapan Lomarat, Kittisak Sripha, Phanida Phanthong, Worawan Kitphati, Krit Thirapanmethee, Nuntavan Bunyapraphatsara

The Thai Journal of Pharmaceutical Sciences

Black pepper oil and its major components were investigated for the biological activities related to the prevention of AD. The inhibition of acetylcholinesterase (AChE) and β-amyloid aggregation, anti-inflammatory and antioxidant activities were examine...

Phytofabrication Of Silver Nanoparticles Using Horse Gram (Dolichos Biflorus L.) Seed Extract And Assessment Of Its Bactericidal And Antioxidant Activities, Mahadevan Vijayalakshmi, Thangavel Rajagopal, Jeyachandran Vijayakumar, Ponnirul Ponmanickam

The Thai Journal of Pharmaceutical Sciences

The silver nanoparticles synthesized by phytofabrication method receive bigger attention due to their fascinating properties. This study deals with the green mediated synthesis of silver nanoparticles using seed extract of horse gram (Dolichos biflorus L...

Screening Of Patients Receiving Selegiline From Methamphetamine Abusers Using The Urinary Amphetamine/Methamphetamine Ratio, Nunthika Kaewpunya, Wichian Tungtananuwat, Akravudh Viriyavejakul, Patramon Yongpanich, Nantana Thong-Ra-Ar, Chanchai Hosanguan, Somsong Lawanprasert

The Thai Journal of Pharmaceutical Sciences

Methamphetamine (MA), the major metabolite of selegiline excreted in urine, can cause false positive interpretation of patient receiving selegiline as a MA user based on the routine non-chiral separation method. This study aims to compare the ratio of am...

Protein-Protein Docking And Molecular Dynamics Simulations Elucidated Binding Modes Of Fubi-P62 Uba Complex, Sumet Chongruchiroj, Panida Kongsawadworakul, Veena Nukoolkarn, Montree Jaturanpinyo, Wichit Nosoong-Noen, Jiraporn Chingunpitak, Jaturong Pratuangdejkul

The Thai Journal of Pharmaceutical Sciences

The cytosolic Fau protein, a precursor of antimicrobial peptide, composes of ubiquitin-like domain FUBI at Nterminus and ribosomal protein rpS30 at C-terminus. Fau has been important in killing of intracellular Mycobacterium tuberculosis infection throug...

In Silico Docking And Pharmacophoric Analysis Of 3-Indolyl Pyridine Derivatives Toward Cyclooxygenase-2, Sukumar Bepary, Ge Hyeong Lee, Hee Jong Lim, In Kwon Youn

The Thai Journal of Pharmaceutical Sciences

A series of 3-indolyl pyridine derivatives having anti-inflammatory activities were docked into the indomethacin binding pocket of cyclooxygenase-2 enzyme. In this in silico study, the possible orientations of the molecules in the binding site of the rec...