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Articles 91 - 101 of 101
Full-Text Articles in Medicine and Health Sciences
Methylphenidate And Atomoxetine Treatment During Adolescence In The Spontaneously Hypertensive Rat: Mechanisms Underlying High Cocaine Abuse Liability In Attention Deficit/Hyperactivity Disorder, Sucharita S. Somkuwar
Methylphenidate And Atomoxetine Treatment During Adolescence In The Spontaneously Hypertensive Rat: Mechanisms Underlying High Cocaine Abuse Liability In Attention Deficit/Hyperactivity Disorder, Sucharita S. Somkuwar
Theses and Dissertations--Pharmacy
Effects of pharmacotherapies for Attention Deficit/Hyperactivity Disorder (ADHD) on cocaine abuse liability in ADHD are not understood. Spontaneously Hypertensive Rats (SHR), an ADHD model, exhibited greater cocaine self-administration than control Wistar-Kyoto and Wistar rats. Methylphenidate, but not atomoxetine during adolescence enhanced cocaine self-administration in adult SHRs compared to controls. The mesocortical dopaminergic system, including medial prefrontal (mPFC) and orbitofrontal (OFC) cortices, is important for ADHD and cocaine addiction. Dopamine and norepinephrine transporter (DAT and NET) are molecular targets for methylphenidate, atomoxetine and cocaine action.
In the current studies, SHR, Wistar-Kyoto and Wistar were administered methylphenidate (1.5 mg/kg/day, p.o.), atomoxetine (0.3 …
A Grounded Theory Model Of Mother Role Development While In The Neonatal Intensive Care Unit, Kathy B. Isaacs
A Grounded Theory Model Of Mother Role Development While In The Neonatal Intensive Care Unit, Kathy B. Isaacs
Theses and Dissertations--Nursing
When a woman discovers that she is pregnant, she begins a process of internal work to develop her mother role. This process has been outlined in the literature for the delivery of a healthy full-term baby, however little is known about the process for mothers of medically fragile babies. A threatened pregnancy and subsequent delivery of a medically fragile baby involves a different process of internal work by the mother to prepare for her role. Mothers with a baby in the Neonatal Intensive Care Unit (NICU) experience stress, uncertainty, and anxiety potentially causing a permanent impact on the successful development …
Influence Of Coping Styles On Emotional State, Illness Perception, And Information Sources Of Men With Prostate Cancer, Gwendolyn M. Hooper
Influence Of Coping Styles On Emotional State, Illness Perception, And Information Sources Of Men With Prostate Cancer, Gwendolyn M. Hooper
Theses and Dissertations--Nursing
Prostate cancer (PCa) has been the leading cause of cancer death in men since1930. While studies pertaining to PCa have primarily focused on the disease and the subsequent side effects of treatment, psychological distress in this group has yet to be adequately addressed. The purpose of this dissertation was to: 1) conceptualize health related quality of life (HRQL) and health seeking behavior of men by describing lifestyle, cultural and health risks associated with being male, 2) evaluate the psychometric properties of the SF-12 Health Survey (SF-12) combined with the urinary and sexual portions of the UCLA PCa Index (UCLA-PCI), 3) …
Barriers To Effective Pain Management In Preterm And Critically Ill Neonates, Sharon W. Lake
Barriers To Effective Pain Management In Preterm And Critically Ill Neonates, Sharon W. Lake
Theses and Dissertations--Nursing
The purpose of this dissertation is to explore potential barriers nurses experience in providing effective pain management for preterm and critically ill infants in neonatal intensive care units (NICUs). The specific aims of the study conducted are to examine (a) NICU caregivers’ knowledge about pain, (b) scales used to evaluate pain in infants, (c) NICU nurses’ documented pain practices, and (d) bias in treating pain of certain types of infants.
This dissertation is comprised of three manuscripts. The first manuscript is an integrated review of the literature describing caregiver knowledge, barriers, and bias in the management of pain in neonates. …
The Factors That Influence Duration Of Exclusive Breastfeeding: A Mixed Methods Design, Roxanne K. Bowman
The Factors That Influence Duration Of Exclusive Breastfeeding: A Mixed Methods Design, Roxanne K. Bowman
Theses and Dissertations--Nursing
Breastfeeding is the gold standard of infant feeding and its benefits extend beyond the mother and child. Multiple organizations recommend exclusive breastfeeding for the first six months of an infant’s life. Exclusive breastfeeding rates nationally and in the state of Kentucky fall below the Healthy People 2020 goals. A mother’s intention to breastfeed has been shown to impact actual breastfeeding behavior. The current state of the measurement of intention was explored through a literature review. A majority of the measures were single item scales. The reliability and validity of the scales should be further tested in diverse populations.
The purposes …
Diet-Induced Obesity: Dopaminergic And Behavioral Mechanisms As Outcomes And Predictors, Vidya Narayanaswami
Diet-Induced Obesity: Dopaminergic And Behavioral Mechanisms As Outcomes And Predictors, Vidya Narayanaswami
Theses and Dissertations--Pharmacy
Obesity and drug abuse share common neural circuitries including the mesocoticolimbic and striatal dopamine reward system. In the current study, a rat model of diet-induced obesity (DIO) was used to determine striatal dopamine function, impulsivity and motivation as neurobehavioral outcomes and predictors of obesity. For the outcome study, rats were randomly assigned a high-fat (HF) or a low-fat (LF) diet for 8 wk. Following the 8-wk HF-diet exposure, rats were segregated into obesity-prone and obesity-resistant groups based on maximum and minimum body weight gain, respectively, and neurobehavioral outcomes were evaluated. For the predictor study, neurobehavioral antecedents were evaluated prior to …
High Dose Simvastatin As A Potential Anticancer Therapy In Leukemia Patients, Tamer Ahmed
High Dose Simvastatin As A Potential Anticancer Therapy In Leukemia Patients, Tamer Ahmed
Theses and Dissertations--Pharmacy
Simvastatin is a 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitor that is used for the treatment of hyperlipidemia. Simvastatin has recently been studied for its potential use in cancer therapy. In-vitro studies have shown that simvastatin displays anticancer activity, but at concentrations unlikely to be achieved in patients being receiving typical antihyperlipidemic treatment doses. Thus, several clinical trials were conducted to study the tolerability of high dose statins in cancer patients. The maximum tolerated dose of simvastatin was determined to be 15 mg/kg/day, 25-fold higher than a typical dose. However, it is not known if simvastatin plasma concentrations can reach those …
Synthesis And Stability Studies Of Prodrugs And Codrugs Of Naltrexone And 6-Β-Naltrexol, Joshua A. Eldridge
Synthesis And Stability Studies Of Prodrugs And Codrugs Of Naltrexone And 6-Β-Naltrexol, Joshua A. Eldridge
Theses and Dissertations--Pharmacy
The present study was divided between two different drug delivery goals, each involving naltrexone (NTX) or its active metabolite, 6-β-naltrexol (NTXOL). First, amino acid esters of NTX and NTXOL were prepared in order to test their candidacy for microneedle-enhanced transdermal delivery. Second, a 3-O-(-)-cytisine-naltrexone (CYT-NTX) codrug was prepared for screening as a potential oral delivery form of NTX and (-)-cytisine (CYT). The amino acid prodrugs were intended for the treatment of alcohol abuse, while the codrug was designed as a single agent for the treatment of alcoholism and tobacco-dependency co-morbidities. One hypothesis of this work was that prodrugs …
Biosynthetic Pathway Of The Aminoribosyl Component Of Lipopeptidyl Nucleoside Antibiotics, Xiuling Chi
Biosynthetic Pathway Of The Aminoribosyl Component Of Lipopeptidyl Nucleoside Antibiotics, Xiuling Chi
Theses and Dissertations--Pharmacy
Several lipopeptidyl nucleoside antibiotics that inhibit bacterial translocase I (MraY) involved in peptidoglycan cell wall biosynthesis contain an aminoribosyl moiety, an unusual sugar appendage in natural products. A-90289 and muraminomicin are the two representative antibiotics that belong to this family. Bioinformatic analysis of the biosynthetic A-90289 gene clusters revealed that five enzymes are likely involved in the assembly and attachment of the aminoribosyl unit. These enzymes of A-90289 are functionally assigned by in vitro characterization. The results reveal a unique ribosylation pathway that highlighted by uridine-5′-monophosphate as the source of the sugar, a phosphorylase strategy to generate a sugar-1-phosphate, and …
Microglia Activation In A Rodent Model Of An Alcohol Use Disorder: The Importance Of Phenotype, Initiation, And Duration Of Activation, Simon A. Marshall
Microglia Activation In A Rodent Model Of An Alcohol Use Disorder: The Importance Of Phenotype, Initiation, And Duration Of Activation, Simon A. Marshall
Theses and Dissertations--Pharmacy
Chronic ethanol exposure results in neuroadaptations that drive the progression of an alcohol use disorder (AUD). One such driving force is alcohol-induced neurodegeneration. Neuroinflammation has been proposed as a mechanism underlying this damage. Although neuroinflammation is a physiological response to damage, overactivation of its pathways can lead to neurodegeneration. A hallmark indicator of neuroinflammation is microglial activation, but microglial activation is a heterogeneous continuum of phenotypes that can promote or inhibit neuroinflammation. Furthermore acute microglial activation is necessary to restore homeostasis, but prolonged activation can exacerbate damage. The diversity of microglia makes both the level and timecourse of activation vital …
Polymer Micelles For Tunable Drug Release And Enhanced Antitumor Efficacy, Andrei G. Ponta
Polymer Micelles For Tunable Drug Release And Enhanced Antitumor Efficacy, Andrei G. Ponta
Theses and Dissertations--Pharmacy
Cancer remains a leading cause of death in the United States. The most common treatment options include chemotherapy, but poor solubility, adverse side effects and differential drug sensitivity hamper clinical applications. Current chemotherapy generally aims to deliver drugs at the limit of toxicity, assuming that higher dosage increases efficacy, with little attention paid to potential benefits of tunable release. Growing evidence suggests that releasing drugs at a constant rate will be as effective as a single bolus dose. To test this hypothesis, it is critical to develop drug delivery systems that fine-tune drug release and elucidate the impact of tunable …