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2015

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Full-Text Articles in Medicine and Health Sciences

Experiential Training To Address Secondary Traumatic Stress In Aid Personnel, Odelya Gertel Kraybill Jan 2015

Experiential Training To Address Secondary Traumatic Stress In Aid Personnel, Odelya Gertel Kraybill

Expressive Therapies Dissertations

Existing studies indicate the widespread existence of secondary traumatic stress (STS) in aid personnel and suggest the need for preventive and response strategies. This study examined the effectiveness of an integrated approach to reducing STS among aid personnel through a model that used psychoeducation, psychodrama, and cognitive behavioral resolution techniques. Data were collected pre- and post-intervention with the Professional Quality of Life Scale (ProQOL) (Stamm, 2009) and at a two-month follow-up (TMFU) for the intervention and control groups. An analysis of variance test was used to evaluate whether the intervention group showed more change on ProQOL scores than did the …


Circulating Fibroblast Precursors In Soft Tissue Sarcoma Metastasis, Dayvia Laws Russell Jan 2015

Circulating Fibroblast Precursors In Soft Tissue Sarcoma Metastasis, Dayvia Laws Russell

MUSC Theses and Dissertations

Soft tissue sarcomas (STS) are rare, malignant tumors of mesenchymal origin that manifest in the connective tissues, including muscle, adipose and deep skin tissue, nerves, and joint tissue. Complications from primary or recurrent sarcomas often lead to increased morbidity, but the most lethal aspect of sarcomas is their propensity for hematogenous dissemination leading to metastatic disease. After development of distant metastases, the median survival for patients with STS is merely 11 to 15 months1,2. Therefore, gaining a better understanding of the metastatic environment is essential to developing new therapies. The tumor microenvironment has been implicated as an essential component for …


Perceptions Of Classroom Physical Activity, Kailey Snyder, Danae M. Dinkel, Connie Schaefer, Jung-Min Lee Jan 2015

Perceptions Of Classroom Physical Activity, Kailey Snyder, Danae M. Dinkel, Connie Schaefer, Jung-Min Lee

Research Presentations

Background: Few children meet the physical activity (PA) recommendations. One new and innovative ways school have tried to improve this is through classroom PA. Studies have found that incorporating opportunities for classroom PA can not only increase PA but also increase children’s time on-task as well as academic scores. However little is known about teachers’ perceptions of.classroom PA Purpose: The purpose of the study was to determine teacher’s perceptions regarding classroom PA. Methods: Four school districts in a metropolitan Midwest City were recruited to participate. Twelve teachers from each district took part in a semi-structured interview over the …


Utilization Of Classroom Physical Activity Breaks, Danae M. Dinkel, Jung-Min Lee, Caitlin Golden, Connie Schaffer Jan 2015

Utilization Of Classroom Physical Activity Breaks, Danae M. Dinkel, Jung-Min Lee, Caitlin Golden, Connie Schaffer

Research Presentations

Historically within schools, physical education and recess periods have been utilized as the primary times for children to obtain some portion of physical activity (PA) recommendations during the school day. Due to academic pressure, opportunities for physical education and recess periods have been reduced. Fewer than 5% of schools require daily physical education and fewer than 12% require daily recess. Additional PA opportunities are needed throughout school day.

PURPOSE: The overall purpose of this study was to examine teachers’ utilization of classroom PA breaks.

METHODS: 332 Elementary school teachers from five school districts in a Midwest city were …


An Exploratory Study Of Infant Physical Activity In Relation To Obesity, Danae M. Dinkel, Jung-Min Lee, Kailey Snyder, Anastasia Kyvelidou Jan 2015

An Exploratory Study Of Infant Physical Activity In Relation To Obesity, Danae M. Dinkel, Jung-Min Lee, Kailey Snyder, Anastasia Kyvelidou

Research Presentations

Historically, society has thought that infants (0 to 1 year of age) are “active enough” and not in need of efforts to promote physical activity (PA). However, approximately 10% of infants in the U.S. are obese and research has shown low PA is one of the risk factors for obesity in toddlers. Little research has been done to systematically compare PA levels between normal weight infants and obese/overweight infants in the first year of life. PURPOSE: The purpose of this study was to determine the level of PA in normal weight and overweight infants. METHODS: Twenty-one normal weight …


Detecting Well-Being In Digital Communities: An Interdisciplinary Engineering Approach For Its Indicators, Margeret A. Hall Jan 2015

Detecting Well-Being In Digital Communities: An Interdisciplinary Engineering Approach For Its Indicators, Margeret A. Hall

Interdisciplinary Informatics Faculty Publications

In this thesis, the challenges of defining, refining, and applying well-being as a progressive management indicator are addressed. This work's implications and contributions are highly relevant for service research as it advances the integration of consumer well-being and the service value chain. It also provides a substantial contribution to policy and strategic management by integrating constituents' values and experiences with recommendations for progressive community management.


The Effects Of Financial Literacy On Patient Engagement, Melanie Meyer Jan 2015

The Effects Of Financial Literacy On Patient Engagement, Melanie Meyer

Walden Dissertations and Doctoral Studies

Health care reform has caused consumers to learn more about what it means to have health insurance and its costs. Patient engagement, a critical component of health care reform, reflects provider and consumer attention to shared decision making between patient and physician. The problem addressed in this study is that although researchers have studied patient engagement, there has been insufficient exploration of the relationship between financial literacy and patient engagement, which could negatively impact health outcomes not only for patients or consumers but for society as a whole. The purpose of this quantitative research was to determine if a relationship …


Giant Aortic Root Aneurysm Associated With Postductal Coarctation Of Aorta, Raquib Ahmed Faruqui, Fazal Wahab Khan, Benish Fatima, Saulat H. Fatimi Jan 2015

Giant Aortic Root Aneurysm Associated With Postductal Coarctation Of Aorta, Raquib Ahmed Faruqui, Fazal Wahab Khan, Benish Fatima, Saulat H. Fatimi

Section of Cardiothoracic Surgery

The aorta is a large blood vessel that carries blood from the heart to the rest of thebody. The aortic root consists of the aortic valve and the openings for thecoronary arteries (the coronary ostia). An aortic aneurysm is an abnormal bulgein the wall of the aorta. If an aneurysm develops in the aortic root, the aorta candilate and the aortic valve can leak. If the aneurysm continues to expand, it canrupture and can cause life-threatening internal bleeding.Aneurysms of the aortic root are often due to degenerative disease of media.Aneurysm of the aortic root often affects patients in their second …


The Effects Of Nutritional Status Assessment By Pre-Albumin Level And Its Effects On Functional Independence Measures (Fim) In Adult Patients After Fall And Fracture, Saeed Niyati Jan 2015

The Effects Of Nutritional Status Assessment By Pre-Albumin Level And Its Effects On Functional Independence Measures (Fim) In Adult Patients After Fall And Fracture, Saeed Niyati

Doctor of Nursing Practice (DNP) Scholarly Projects - Archive

Background: Fall is leading cause of injury in elderly persons. Nutritional status is an important aspect of elderly life that influences daily activities, quality of life in patients with fall and fractures. Objectives: To evaluate the effects of nutritional assessment by prealbumin level on Functional Independence Measures (FIM) and Length of Stay (LOS)in elderly population with fall and fracture in rehabilitation hospital. Methods: This study design was a one group pretest-posttest without a control group. Seventy one patients (n=71) 65 years or older who were admitted to the rehabilitation hospital with a diagnosis of fall and fracture recruited. Nutritional status …


Mental Health Access Among International College Students, Linda Bett Jan 2015

Mental Health Access Among International College Students, Linda Bett

Doctor of Nursing Practice (DNP) Scholarly Projects - Archive

The International student population is steadily rising in various campuses across the United States (U.S). Mental health concerns such as mood, anxiety, adjustment disorders, relationship problems, and academic struggles are significant among this population (Mitchell, Greenwood, and Guglielmi, 2007; Yorgason, Linville, and Zitzman, 2008). Lack of knowledge, fear, stigma, poor support resources, unawareness of service availability, beliefs, culture, and mental health experiences have been voiced as reasons that impact help seeking attitudes. Early mental health interventions are therefore warranted; if mental health concerns are left unaddressed they could result in a decreased ability to function or more fatal consequences such …


Non-Invasive Parameters For The Detection Of Variceal Bleed In Patients Of Liver Cirrhosis, An Experience Of A Tertiary Care Hospital In Pakistan, Anam Umar, Fakhar Qazi, Rukhsana Abdul Sattar, Beena Umar Jan 2015

Non-Invasive Parameters For The Detection Of Variceal Bleed In Patients Of Liver Cirrhosis, An Experience Of A Tertiary Care Hospital In Pakistan, Anam Umar, Fakhar Qazi, Rukhsana Abdul Sattar, Beena Umar

Section of Gastroenterology

Objective: Cirrhotic patients commonly undergo screening endoscopy for the existence of esophageal varices. The use of this invasive procedure which is expensive, poorly tolerable and generally not acceptable for the patients is increasing due to increasing number of patients with chronic liver disease and their enriched survival. In this study, our aim is to identify clinical, biochemical, and ultrasonography parameters which might noninvasively predict the presence of esophageal varices and risk of bleeding in patients with liver cirrhosis.

Material and Methods: Total 150 Patientsof chronic liver disease admitted in ward-5, JPMC(Sep 2011-Feb 2012) with a complaint of hematemesis or melena …


Four-Digit Hand: Anatomy Of Ray Ii Amputation, Sadie Volk Jan 2015

Four-Digit Hand: Anatomy Of Ray Ii Amputation, Sadie Volk

The Journal of Undergraduate Research

The South Dakota State University anatomy program received a male cadaver, age eighty-four, in January 2014. Upon arrival, the cadaver was observed for any signs of surgery, skin ulcerations, or abnormality. The inspection revealed that his right hand only had four digits. In order to observe such a unique extremity, a dissection was conducted to understand the anatomy of the four-digit hand. This dissection would search for standard anatomical landmarks as well as abnormalities that could have been in relation to the absent finger. In this case study, both amputation and a possible birth defect were taken into account and …


Muscular And Neural Contributions To Postactivation Potentiation, Brian Joseph Wallace Jan 2015

Muscular And Neural Contributions To Postactivation Potentiation, Brian Joseph Wallace

Theses and Dissertations--Kinesiology and Health Promotion

Muscle performance is partially a consequence of its recent contractile history. Postactivation potentiation (PAP) can occur after muscle contractions and leads to enhanced neuromuscular performance. The purpose of this dissertation was to explain the relationship between muscle factors (twitch potentiation, TP) and neural factors (reflex potentiation, RP) contributing to overall PAP following a non-fatiguing volitional muscle contraction. The tibial nerves of fifteen resistance trained volunteers (eleven men, four women) were stimulated intermittently at supramaximal (Mmax) and submaximal (Hmax) intensities for 20 minutes on separate days under three conditions: rest (Control); after a after a 10 second maximum voluntary isometric contraction …


The Effect Of Fluid Periodization On Athletic Performance Outcomes In American Football Players, Christopher W. Morris Jan 2015

The Effect Of Fluid Periodization On Athletic Performance Outcomes In American Football Players, Christopher W. Morris

Theses and Dissertations--Kinesiology and Health Promotion

For decades strength and conditioning professionals have been seeking optimal training volumes and intensities to yield maximum performance outcomes without the onset of injury. Unfortunately, current studies apply experimental training techniques without considering the individuals’ response to the imposed training load. Due to the vast genetic variability and extraneous environmental factors that affect one’s ability to recover, results from such studies are controversial and inconclusive. Athlete monitoring systems offer an objective assessment that is purported to evaluate an individual’s physiological readiness to adapt to an overload stimulus and thus allow for daily manipulations in training loads (i.e., fluid periodization). However, …


Biomechanical Analysis Of Race Walking Compared To Normal Walking And Running Gait, Jaclyn D. Norberg Jan 2015

Biomechanical Analysis Of Race Walking Compared To Normal Walking And Running Gait, Jaclyn D. Norberg

Theses and Dissertations--Kinesiology and Health Promotion

Human locomotion is phenomenon that is extraordinarily complex. It is evident that a complete description of locomotion involves consideration of kinematics, kinetics, and muscle activity of the extremities in all of their various movements. Race walking (RW) is a form of upright locomotion that differs from normal walking and running by its form dictated by the International Amateur Athletics Federation (IAAF). Despite the similarities to both normal walking (NW) and running (RU), RW has not been the subject of equally intensive investigations.

This study explores the comprehensive biomechanics of race walking and how it compares to NW and RU. A …


The Effect Of Β-Hydroxy-Β-Methylbutyrate (Hmb) Supplementation On Neuromuscular Performance Following Fatiguing Exercise In Healthy Subjects, Jordon W. Macht Jan 2015

The Effect Of Β-Hydroxy-Β-Methylbutyrate (Hmb) Supplementation On Neuromuscular Performance Following Fatiguing Exercise In Healthy Subjects, Jordon W. Macht

Theses and Dissertations--Kinesiology and Health Promotion

Supporters of a nutritional supplement, β-Hydroxy-β-Methylbutyrate (HMB) supplementation, claim that it will increase the muscular strength gains and lean muscle mass gains seen during a resistance training program. It has been suggested that HMB supplementation does this by preventing muscle damage or by regenerating damaged muscle cell membranes. However, no research has evaluated the effect of HMB supplementation on low frequency fatigue. Therefore, the purpose of this study was to determine if three weeks of HMB supplementation could attenuate the effects of low frequency fatigue caused by eccentric muscle contractions of the tibialis anterior muscle. A total of 33 healthy …


Cardiovascular Disease Risk Factors In Structural Firefighters, Nicholas W. Trubee Jan 2015

Cardiovascular Disease Risk Factors In Structural Firefighters, Nicholas W. Trubee

Theses and Dissertations--Kinesiology and Health Promotion

This dissertation is composed of two manuscripts assessing cardiovascular disease (CVD) risk in structural firefighters. Study 1 compared traditional CVD risk factors and health-related behaviors between professional and volunteer firefighters. Online questionnaires were sent to approximately 4000 firefighters in the state of Kentucky. The results indicated that 90% of volunteer and 58% of professional firefighters were classified as moderate-to-high CVD risk. Volunteer firefighters were significantly (p < 0.001) older and more likely (p = 0.026) to be current cigarette smokers. The mean body mass index among all firefighters in the sample was 30.8 kg·m-2. Nearly 60% of volunteer firefighters were obese. Obese firefighters were more likely (p < 0.05) to have been diagnosed as diabetic or pre-diabetes compared to overweight and normal weight firefighters. These results indicate that volunteer firefighters may be at a greater CVD risk compared to professional firefighters.

Study 2 investigated the association of cardiorespiratory fitness (CRF) and body fat with arterial stiffness in professional firefighters. Forty-six …


The Effects Of Spinal Manipulative Therapy On Isokinetic Strength And Postactivation Potentiation, Grant D. Sanders Jan 2015

The Effects Of Spinal Manipulative Therapy On Isokinetic Strength And Postactivation Potentiation, Grant D. Sanders

Theses and Dissertations--Kinesiology and Health Promotion

Spinal manipulative therapy (SMT) is a therapeutic procedure employed by various healthcare practitioners for alleviating acute and chronic musculoskeletal complaints. This form of treatment is also delivered to enhance the performance and augment the rehabilitation of athletes. However, despite research findings alleging the strength-modulating effects of SMT alongside numerous professional athletes’ positive anecdotal claims concerning its results, the physiological processes to explain its effects remain largely unexplained. Therefore, the purpose of this work was to investigate the effects of SMT in a college-aged sample population with two experiments.

The first study examined the effect of SMT targeting the lumbosacral region …


A Public Duty: Medicine And Commerce In Nineteenth-Century American Literature And Culture, Heather E. Chacon Jan 2015

A Public Duty: Medicine And Commerce In Nineteenth-Century American Literature And Culture, Heather E. Chacon

Theses and Dissertations--English

Using recent criticism on speculation and disability in addition to archival materials, “A Public Duty: Medicine and Commerce in Nineteenth-Century American Literature and Culture” demonstrates that reform-minded nineteenth-century authors drew upon the representational power of public health to express excitement and anxiety about the United States’ emerging economic and political prominence. Breaking with a critical tradition holding that the professionalization of medicine and authorship served primarily to support and define an ascending middle class, I argue that the authors such as Robert Montgomery Bird, Fanny Fern, George Washington Cable, and Pauline Hopkins fuse the rhetoric of economic policy and public …


Dietary Selenium Supplementation: Effects On Neurodegeneration Following Traumatic Brain And Spinal Cord Injury, Carolyn A. Crowdus Meyer Jan 2015

Dietary Selenium Supplementation: Effects On Neurodegeneration Following Traumatic Brain And Spinal Cord Injury, Carolyn A. Crowdus Meyer

Theses and Dissertations--Neuroscience

Traumatic brain and spinal cord injury continue to be substantial clinical problems with few available treatment strategies. Individuals who are at a greater risk for sustaining a central nervous system (CNS) injury, such as professional athletes and military personnel, may benefit from a prophylactic supplement that would intervene in the neurodegenerative pathways immediately following injury. The high demand for selenium within the central nervous system, as well as the synthesis of selenoproteins by neurons and astrocytes suggests a critical role of selenium within the brain and spinal cord. Studies were designed to test the efficacy of enriched dietary selenium status …


Mitochondrial And Neuroprotective Effects Of Phenelzine Related To Scavenging Of Neurotoxic Lipid Peroxidation Products, John Cebak Jan 2015

Mitochondrial And Neuroprotective Effects Of Phenelzine Related To Scavenging Of Neurotoxic Lipid Peroxidation Products, John Cebak

Theses and Dissertations--Neuroscience

Lipid peroxidation is a key contributor to the pathophysiology of traumatic brain injury (TBI). Traditional antioxidant therapies are intended to scavenge the free radicals responsible for either the initiation or propagation of lipid peroxidation (LP). However, targeting free radicals after TBI is difficult as they rapidly react with other cellular macromolecules, and thus has a limited post-injury time window in which they may be intercepted by a radical scavenging agent. In contrast, our laboratory has begun testing an antioxidant approach that scavenges the final stages of LP i.e. formation of carbonyl-containing breakdown products. By scavenging breakdown products such as the …


Target-Directed Biosynthetic Evolution: Redirecting Plant Evolution To Genomically Optimize A Plant’S Pharmacological Profile, Dustin Paul Brown Jan 2015

Target-Directed Biosynthetic Evolution: Redirecting Plant Evolution To Genomically Optimize A Plant’S Pharmacological Profile, Dustin Paul Brown

Theses and Dissertations--Neuroscience

The dissertation describes a novel method for plant drug discovery based on mutation and selection of plant cells. Despite the industry focus on chemical synthesis, plants remain a source of potent and complex bioactive metabolites. Many of these have evolved as defensive compounds targeted on key proteins in the CNS of herbivorous insects, for example the insect dopamine transporter (DAT). Because of homology with the human DAT protein some of these metabolites have high abuse potential, but others may be valuable in treating drug dependence. This dissertation redirects the evolution of a native Lobelia species toward metabolites with greater activity …


Regulation Of Pancreatic Β-Cell Function By The Renin-Angiotensin System In Type 2 Diabetes, Robin C. Shoemaker Jan 2015

Regulation Of Pancreatic Β-Cell Function By The Renin-Angiotensin System In Type 2 Diabetes, Robin C. Shoemaker

Theses and Dissertations--Pharmacology and Nutritional Sciences

Diet-induced obesity promotes type 2 diabetes (T2D). Drugs that inhibit the renin-angiotensin system (RAS) have been demonstrated in clinical trials to decrease the onset of T2D. Previously, we demonstrated that mice made obese from chronic consumption of a high-fat (HF) diet have marked elevations in systemic concentrations of angiotensin II (AngII). Pancreatic islets have been reported to possess components of the renin-angiotensin system (RAS), including angiotensin type 1a receptors (AT1aR), the primary receptor for AngII, and angiotensin converting-enzyme 2 (ACE2), which negatively regulates the RAS by catabolizing AngII to angiotensin-(1-7) (Ang-(1-7)). These two opposing proteins have been implicated in the …


Roles Of Abcg5 Abcg8 Cholesterol Transporter In Lipid Homeostasis, Yuhuan Wang Jan 2015

Roles Of Abcg5 Abcg8 Cholesterol Transporter In Lipid Homeostasis, Yuhuan Wang

Theses and Dissertations--Pharmacy

The ABCG5 ABCG8 (G5G8) sterol transporter promotes cholesterol secretion into bile and opposes dietary sterol absorption in the small intestine. An emerging body of literature suggests that G5G8 links sterol flux to various risk factors for metabolic syndrome (MetS) and nonalcoholic fatty liver disease (NAFLD). Therapeutic approaches that accelerate G5G8 activity may augment reverse cholesterol transport (RCT) and provide beneficial effects in the prevention and treatment of cardiovascular and liver disease.

Mice lacking leptin (ob/ob) or its receptor (db/db) are obese, insulin resistant in part due to the reduced levels of hepatic G5G8 and biliary cholesterol. …


Medication Misadventures: The Case Of Benzodiazepines, Sarah E. Wixson Jan 2015

Medication Misadventures: The Case Of Benzodiazepines, Sarah E. Wixson

Theses and Dissertations--Pharmacy

For patients afflicted with symptoms of anxiety and insomnia, benzodiazepines are generally a safe and effective short-term pharmacological treatment option. Although considered safer than other sedative-hypnotic medications, substantial concern exists regarding the addictive nature and abuse potential of benzodiazepines along with potentially inappropriate prescribing and utilization in clinically vulnerable populations. These medication misadventures can have a significant impact on public health. Examples of medication misadventures as they pertain to benzodiazepines include the prescribing and use in clinically vulnerable populations for whom they are contraindicated or their efficacy has not been evaluated, the development of tolerance or addiction, abuse of the …


Kinetics And Mechanisms Of Crystal Growth Inhibition Of Indomethacin By Model Precipitation Inhibitors, Dhaval D. Patel Jan 2015

Kinetics And Mechanisms Of Crystal Growth Inhibition Of Indomethacin By Model Precipitation Inhibitors, Dhaval D. Patel

Theses and Dissertations--Pharmacy

Supersaturating Drug Delivery Systems (SDDS) could enhance oral bioavailability of poorly water soluble drugs (PWSD). Precipitation inhibitors (PIs) in SDDS could maintain supersaturation by inhibiting nucleation, crystal growth, or both. The mechanisms by which these effects are realized are generally unknown. The goal of this dissertation was to explore the mechanisms underpinning the effects of model PIs including hydroxypropyl β-cyclodextrins (HP-β-CD), hydroxypropyl methylcellulose (HPMC), and polyvinylpyrrolidone (PVP) on the crystal growth of indomethacin, a model PWSD. At high degrees of supersaturation (S), the crystal growth kinetics of indomethacin was bulk diffusion-controlled, which was attributed to a high energy form deposited …


Design, Synthesis, And Pharmacological Evaluation Of Three Series Of Lobelane Analogs As Inhibitors Of The Vesicular Monoamine Transporter (Vmat2), John P. Culver Jan 2015

Design, Synthesis, And Pharmacological Evaluation Of Three Series Of Lobelane Analogs As Inhibitors Of The Vesicular Monoamine Transporter (Vmat2), John P. Culver

Theses and Dissertations--Pharmacy

Methamphetamine (METH) abuse is a serious problem in the United States and worldwide. The reward experienced by METH users is due to the increase in extracellular dopamine (DA) concentrations caused by an interaction between METH and the DA transporter (DAT) as well as the Vesicular Monoamine Transporter-2 (VMAT2). The reward felt by users of METH leads to further use of the drug and subsequent abuse. The current project examined the ability of three novel series of lobelane analogs to interact with a binding site on the Vesicular Monoamine Transporter-2 (VMAT2) in an attempt to inhibit the effects of METH. Lobelane …


Chemoenzymatic Studies To Enhance The Chemical Space Of Natural Products, Jhong-Min Chen Jan 2015

Chemoenzymatic Studies To Enhance The Chemical Space Of Natural Products, Jhong-Min Chen

Theses and Dissertations--Pharmacy

Natural products provide some of the most potent anticancer agents and offer a template for new drug design or improvement with the advantage of an enormous chemical space. The overall goal of this thesis research is to enhance the chemical space of two natural products in order to generate novel drugs with better in vivo bioactivities than the original natural products.

Polycarcin V (PV) is a gilvocarcin-type antitumor agent with similar structure and comparable bioactivity with the principle compound of this group, gilvocarcin V (GV). Modest modifications of the polyketide-derived tetracyclic core of GV had been accomplished, but the most …


A Molecular-Level View Of The Physical Stability Of Amorphous Solid Dispersions, Xiaoda Yuan Jan 2015

A Molecular-Level View Of The Physical Stability Of Amorphous Solid Dispersions, Xiaoda Yuan

Theses and Dissertations--Pharmacy

Many pharmaceutical compounds being developed in recent years are poorly soluble in water. This has led to insufficient oral bioavailability of many compounds in vitro. The amorphous formulation is one of the promising techniques to increase the oral bioavailability of these poorly water-soluble compounds. However, an amorphous drug substance is inherently unstable because it is a high energy form. In order to increase the physical stability, the amorphous drug is often formulated with a suitable polymer to form an amorphous solid dispersion. Previous research has suggested that the formation of an intimately mixed drug-polymer mixture contributes to the stabilization …


Molecular And Functional Investigation Of Cancer-Type And Liver-Type Variants Of Organic Anion Transporting Polypeptide 1b3, Nilay Thakkar Jan 2015

Molecular And Functional Investigation Of Cancer-Type And Liver-Type Variants Of Organic Anion Transporting Polypeptide 1b3, Nilay Thakkar

Theses and Dissertations--Pharmacy

OATP1B3 belongs to the OATP (organic anion transporting polypeptides) superfamily, responsible for mediating the transport of various endogenous and xenobiotic substrates. OATP1B3 was initially reported to be expressed exclusively in the hepatocytes where it mediates the uptake of numerous endogenous substrates (e.g. bile acids, steroid hormone conjugates) and several clinically relevant drugs including anticancer drugs. Later, a number of studies reported that OATP1B3 is also frequently expressed in multiple types of cancers and may be associated with differing clinical outcomes. However, a detailed investigation on the expression, localization and functions of OATP1B3 expressed in cancer has been lacking. In this …