Digital Commons Network^™

Comparison Of Eosin And Fluorescein Conjugates For The Photoinitiation Of Cell-Compatible Polymer Coatings, Jacob L. Lilly, Anuhya Gottipati, Calvin F. Cahall, Mohamed Agoub, Brad J. Berron

Chemical and Materials Engineering Faculty Publications

Targeted photopolymerization is the basis for multiple diagnostic and cell encapsulation technologies. While eosin is used in conjunction with tertiary amines as a water-soluble photoinitiation system, eosin is not widely sold as a conjugate with antibodies and other targeting biomolecules. Here we evaluate the utility of fluorescein-labeled bioconjugates to photopolymerize targeted coatings on live cells. We show that although fluorescein conjugates absorb approximately 50% less light energy than eosin in matched photopolymerization experiments using a 530 nm LED lamp, appreciable polymer thicknesses can still be formed in cell compatible environments with fluorescein photosensitization. At low photoinitiator density, eosin allows more …

An Intracellular Activation Of Smoothened That Is Independent Of Hedgehog Stimulation In Drosophila, Kai Jiang, Yajuan Liu, Jie Zhang, Jianhang Jia

Markey Cancer Center Faculty Publications

Smoothened (Smo), a GPCR family protein, plays a critical role in the reception and transduction of Hedgehog (Hh) signal. Smo is phosphorylated and activated on the cell surface; however, it is unknown whether Smo can be intracellularly activated. Here, we demonstrate that inactivation of the ESCRT-III causes dramatic accumulation of Smo in the ESCRT-III/MVB compartment, and subsequent activation of Hh signaling. In contrast, inactivation of ESCRTs 0–II induces mild Smo accumulation in the ESCRT-III/MVB compartment. We provide evidence that Kurtz (Krz), the Drosophila β-arrestin2, acts in parallel with the ESCRTs 0-II pathway to sort Smo to the multivesicular bodies and …

Exploring Evolutionary Medicine Through 19Th Century Medical Collections: Applications In Archival Studies, Taylor Sturgill

Special Collections Research Center Learning Lab Student Research

Evolution has been a paradox in the field of science, but, the study of evolutionary medicine applies both the evolutionary game theory and medicine. This study was conducted to explore evolution by analyzing two 19th century collections of medical formulations and prescriptions while compared to the trend of public health and pathogenic mechanisms. Analysis of organic structure in historical prescriptions, descriptive epidemiology in Kentucky, and the idea of the germ theory will be used explicitly to show the evolutionary change of health and disease. Results of this study provided an outlook on ingredients that stimulate the body as a whole …

Effects Of Environmental Conditions On C-Fos Expression In Rat Nucleus Accumbens After Remifentanil, Usman Z. Hamid, Rebecca S. Hofford, Michael T. Bardo

Oswald Research and Creativity Competition

Previous studies have shown that adolescents raised in impoverished conditions are more likely to develop drug abuse in adulthood. In addition, both stress-inducing living conditions (impoverishment/isolation) and drugs of abuse may lead to an increase in the c-fos transcription factor in the reward circuit of the brain, particularly in the nucleus accumbens. The aim of the current study was to quantify the number of c-fos positive cells in the nucleus accumbens of enriched and isolated rats exposed to the opioid remifentanil. Thirty-two male Sprague-Dawley rats were raised in either enriched or isolated conditions for one month, after which they received …

Synthesis And Characterization Of Blue Light Poly(Β-Amino Ester)S, Nicholas John Kohrs

Theses and Dissertations--Biomedical Engineering

Volumetric muscle loss (VML) is a debilitating injury which results in full or partial loss of function. Current clinical options utilize tissue grafts and bracing to restore function. Tissue graft implantation oftentimes leads to serious complications, some of which end in graft rejection and thereby necessitate further surgeries and procedures. Polymeric scaffolds show promise as scaffolding systems due to their mechanical properties and overall degradation profiles. Scaffolds need appropriate mechanical properties, 10-60 kPa modulus, and overall degradation times, five days to two weeks, to initiate tissue regeneration. Poly(β-amino ester)s (PBAE), a class of synthetic polymers, act as a safe biocompatible …

Impact Of Air Manganese On Child Neurodevelopment In East Liverpool, Ohio, Erin N. Haynes, Heidi Sucharew, Timothy J. Hilbert, Pierce Kuhnell, Alonzo Spencer, Nicholas C. Newman, Roxanne Burns, Robert Wright, Patrick J. Parsons, Kim N. Dietrich

Epidemiology and Environmental Health Faculty Publications

Background: East Liverpool, Ohio, the site of a hazardous waste incinerator and a manganese (Mn) processor, has had air Mn concentrations exceeding United States Environmental Protection Agency reference levels for over a decade. Save Our County, Inc., a community organization, was formed to address community environmental health concerns related to local industry. Researchers from the University of Cincinnati partnered with Save Our County to determine if air Mn had an impact on the neurocognitive function of children in the community.

Methods: Children 7–9 years of age from East Liverpool and its surrounding communities, were enrolled (N = 106) in the …

Tissue Expression Patterns Identify Mouse Cilia Genes, Timothy S. Mcclintock

Physiology Research Data

A summary of 2,127 mouse genes linked to cilia by previous high-throughput approaches (reviewed in Inglis et al., 2006), published studies of individual gene products, or by McClintock et al. 2008. Each gene was viewed at Entrez Gene to verify and update the Gene ID and Gene Symbol. Each was also searched against PubMed (Gene Symbol AND (cili* OR flagel*)) for published evidence linking the mouse gene or putative orthologs to cilia or flagella. This searchable file lists identifying information about each gene, functional information about the encoded protein, the number of high-throughput studies linking the gene to cilia, and …

Effects Of Father Absence On Age Of Sexual Activity And Current Stress And Attachment Levels Of Young Adult Women, Stephanie Glenn

Theses and Dissertations--Family Sciences

This study bridges the gap in literature about the impact of father absence on female adult attachment and current stress levels. A sample of 666 female college students between the ages of 18 and 22 at the University of Kentucky was recruited to complete an online survey about their experience with their fathers and the effects on their attachment and stress levels, while assessing the age of their first sexual experience. Father absence seems to be a significant predictor of earlier sexual activity among females and anxious attachment styles, along with higher stress levels. When the father is absent from …

Recurrent Neural Networks And Their Applications To Rna Secondary Structure Inference, Devin Willmott

Theses and Dissertations--Mathematics

Recurrent neural networks (RNNs) are state of the art sequential machine learning tools, but have difficulty learning sequences with long-range dependencies due to the exponential growth or decay of gradients backpropagated through the RNN. Some methods overcome this problem by modifying the standard RNN architecure to force the recurrent weight matrix W to remain orthogonal throughout training. The first half of this thesis presents a novel orthogonal RNN architecture that enforces orthogonality of W by parametrizing with a skew-symmetric matrix via the Cayley transform. We present rules for backpropagation through the Cayley transform, show how to deal with the Cayley …

Selective Inhibition Of Ctcf Binding By Ias Directs Tet-Mediated Reprogramming Of 5-Hydroxymethylation Patterns In Ias-Transformed Cells, Matthew Rea, Tyler Gripshover, Yvonne N. Fondufe-Mittendorf

Molecular and Cellular Biochemistry Faculty Publications

Methylation at cytosine (5mC) is a fundamental epigenetic DNA modification recently associated with iAs-mediated carcinogenesis. In contrast, the role of 5-hydroxymethylcytosine (5hmC), the oxidation product of 5mC in iAs-mediated carcinogenesis is unknown. Here we assess the hydroxymethylome in iAs-transformed cells, showing that dynamic modulation of hydroxymethylated DNA is associated with specific transcriptional networks. Moreover, this pathologic iAs-mediated carcinogenesis is characterized by a shift toward a higher hydroxymethylation pattern genome-wide. At specific promoters, hydroxymethylation correlated with increased gene expression. Furthermore, this increase in hydroxymethylation occurs concurrently with an upregulation of ten-eleven translocation (TET) enzymes that oxidize 5-methylcytosine (5mC) in DNA. To …

Biosynthetic Mechanism Of The Antibiotic Capuramycin, Erfu Yan

Theses and Dissertations--Pharmacy

A-102395 is a member of the capuramycin family of antibiotics which was isolated from the culture broth of Amycolatopsis sp. SANK 60206. A-102339 is structurally classified as a nucleoside antibiotic, which like all members of the capuramycin family, inhibits bacterial MraY (translocase I) with IC₅₀ of 11 nM which is the lowest among the capuramycin family. A semisynthetic derivative of capuramycin is currently in clinical trials as an antituberculosis antibiotic, suggesting high potential for using A-102395 as a starting point for new antibiotic discovery. In contrast to other capuramycins, A-102395 has a unique arylamine-containing polyamide side chain. The biosynthetic …

Mental Representations Of The Homeless, Stephanie E. Mckee

Theses and Dissertations--Psychology

Stereotypes surrounding race and socioeconomic status often have overlapping attributes. That is, we tend to stereotypically associate African Americans and poor individuals with being incompetent. Further, people automatically associate African Americans with the concept of poor. The current research examined people’s mental representations of a homeless person, a poor person, and a person with a home, to see if people’s mental representation of a homeless varied from that of a poor person. Results from Study 1 (N = 524), using a bi-racial base image indicate that people, on average, mentally represent the poor and homeless in a similar manner. …

Select Antimicrobial Resistance Trends In Kentucky’S Bovine Population And Antibiogram Development, Jessica Morehouse

Theses and Dissertations--Public Health (M.P.H. & Dr.P.H.)

Introduction: Antimicrobial resistance (AMR) is a complex problem that affects all of society and is driven by many interconnected factors. It is important to monitor AMR trends in veterinary medicine to accurately pursue appropriate antibiotic treatment of ill animals. Antibiogram development is also an important tool in guiding the veterinary practitioner in treating empirically or while a culture and susceptibility is being performed.

Methods: This study compared bacterial susceptibility in voluntary samples submitted to the University of Kentucky Veterinary Diagnostic Laboratory and the Murray State University Breathitt Veterinary Center between 2012 and 2017. Equality of proportions was used to compare …

Beliefs About Self-Control And Regulation: Do They Matter For College Performance?, Cara E. Worick

Theses and Dissertations--Educational, School, and Counseling Psychology

Students who are good self-regulators have higher motivation and achievement than those who are not. The beliefs students hold influence the goals they set, how they regulate learning, their motivation, and their subsequent actions. Beliefs about one’s own willpower (the capacity to exert self-control in everyday life) have been shown to affect individuals’ self-regulation. Willpower has been conceptualized as a limited resource that is easily depleted in demanding situations. However, some researchers have shown that individuals’ beliefs about willpower capacity (i.e., as finite or abundant), and not their actual willful acts, are more predictive of self-regulated behavior. Researchers have similarly …

A Classroom-Based Physical Activity Intervention For Adolescents: Is There A Relationship With Self-Efficacy, Physical Activity, And On-Task Behavior?, Colleen Cornelius

Theses and Dissertations--Educational, School, and Counseling Psychology

Classroom-based physical activity is a newly explored avenue for providing physical activity opportunities to children within the school, but it is one that is showing academic gains in areas such as on-task behavior. The purpose of this study was to explore the impact of pedal desks placed in high school classrooms. Three main objectives were examined: 1) The possible increase in physical activity self-efficacy among high school students in the classroom, 2) the effectiveness of pedal desks on increased physical activity among high school students, and 3) the impact of pedal desks on increasing classroom on-task behavior. Participants included 114 …

Examining An Asynchronous Group Discussion Board Adaptation Of A Parent-Mediated Behavior Intervention For Children With Autism Spectrum Disorders, Alexis D. Rodgers

Theses and Dissertations--Educational, School, and Counseling Psychology

Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by social and communication deficits, as well as restricted, repetitive, and stereotyped behaviors, interests, and activities (American Psychiatric Association, 2013). Although important relationships have been shown and described among the issues of challenging behavior, parent stress, and parenting sense of competence for families of children with ASD, there is a shortage of intervention programs appropriately suited for families which target these issues. Some programs have been developed and tested, but none is directly applicable for the target population. This is notable because of the connections drawn in the literature between families …

Exploring Critical Consciousness, Facilitating Black Liberation, Della V. Mosley

Theses and Dissertations--Educational, School, and Counseling Psychology

The current study aimed to uncover processes and experiences that led individuals to critically engage in racial justice activism, specifically the Black Lives Matter movement. A constructivist grounded theory approach was utilized under critical-ideological and Black feminist paradigms in order to build a practical theory related to developing critical consciousness about oppression facing the Black community. Black activists in the movement between the ages of 23 and 60 (N=12) participated in intensive individual interviews. The result of the study is a co-constructed theory of racial justice activism development (the Critical Consciousness of Anti-Black Racism [CCABR] model) that can be used …

An Optimized Solid-Phase Reduction And Capture Strategy For The Study Of Reversibly-Oxidized Cysteines And Its Application To Metal Toxicity, John Andrew Hitron

Theses and Dissertations--Toxicology and Cancer Biology

The reversible oxidation of cysteine by reactive oxygen species (ROS) is both a mechanism for cellular protein signaling as well as a cause of cellular injury and death through the generation of oxidative stress. The study of cysteine oxidation is complicated by the methodology currently available to isolate and enrich oxidized-cysteine containing proteins. We sought to simplify this process by reducing the time needed to process samples and reducing sample loss and contamination risk.

We accomplished this by eliminating precipitation steps needed for the protocol by (a) introducing an in-solution NEM-quenching step prior to reduction and (b) replacing soluble dithiothreitol …

Uterine Corpus Malignancies In Appalachia Kentucky: Incidence, Survival And Related Health Disparities, Marian Symmes Johnson

Theses and Dissertations--Clinical Research Design

Uterine cancer is the nation’s most common gynecologic malignancy but is understudied in the geographically and socioeconomically diverse state of Kentucky (KY). This study assessed the frequency, distribution, and survival of uterine corpus malignancies in KY, and specifically the differences between Appalachia (AP) and non-Appalachia (NAP).

This study utilizes SEER and Kentucky Cancer Registries to study uterine corpus malignancy between January 1, 2000 and December 31, 2014. The analysis looks at incidence between diagnoses in AP and NAP. Evaluation criteria includes: tumor histology (Type I, Type II, sarcoma, and mixed uterine malignancy), age, race, smoking status, stage at diagnosis, insurance …

Cycads, Flying Foxes, And Brain Disease In Humans, Logan Disney

Lewis Honors College Capstone Collection

Cycads are a group of ancient gymnosperms with a rich fossil history. While they once dominated the world’s forests, their adaptation to warm climates has now restricted them to tropical areas. They are not widely eaten by humans due to their known toxicity, but some indigenous groups of the Pacific Islands, such as the Chamorro people of Guam, have developed methods of washing the seeds for safe consumption. Cycad seeds are a common dietary item of several mammals. One such mammal, the flying fox, is considered a delicacy to several indigenous groups. In the mid-twentieth century, these groups also expressed …

The Effect Of Competition Presence On Relationship Retention Decisions, Kaycee Champion

Lewis Honors College Capstone Collection

Relationships are connections between two or more people, which determine how they behave toward one another. Romantically speaking, relationships can become more complex. With the high levels of interference from people outside the relationship added to the personality traits of each individual within, romantic relationships may suffer or face difficulties over time. Mate retention behaviors are based on a variety of factors, but this study specifically focuses on the effects of threat perception in the presence of competition for females. By surveying females in a relationship, the information on attachment styles and threat perception was collected. By using a female …

Functional Analysis Of Protease Adamts 6 During Vertebrate Eye Formation, Austin Taylor

Lewis Honors College Capstone Collection

Extracellular matrix (ECM) remodeling and epithelial sheet fusion occur during the development of many different tissues, including the vertebrate eye (Lu et al., 2011) (Pai et al., 2012). During morphogenesis of the eye, the ventral hemisphere of the developing retinal tissue forms an opening called the optic fissure which must undergo epithelial fusion (Pai et al., 2012). Failure of optic fissure fusion leads to a congenital blinding disorder called coloboma (Gregory-Evans, 2004). A long standing question pertaining to the mechanism of optic fissure fusion is exactly which ECM remodeling enzymes are actively involved in dismantling the ECM to allow for …

The Potential Electoral Influence Of Internet Memes, Sierra K. Hatfield

Oswald Research and Creativity Competition

The rising popularity of social media has affected the communication methods of political candidates within the United States. Given the online presence of candidates in recent years, this paper argues that it’s time to consider internet memes – one of the many facets most commonly found on social media – as political rhetoric. This paper seeks to discern which components of an internet meme are most effective in persuading a young voter, using a visually rhetorical approach to understand which characteristics make it most effective. The study also seeks to find which demographics are most likely to be influenced, using …

Role Of Glycerol-3-Phosphate Permeases In Plant Defense, Juliana Moreira Soares

Theses and Dissertations--Plant Pathology

Systemic acquired resistance (SAR) is a type of plant defense mechanism that is induced after a localized infection and confers broad-spectrum immunity against related or unrelated pathogens. During SAR, a number of chemical signals and proteins generated at the site of primary infection travel to the uninfected tissues and are thought to alert the distal sites against secondary infections. Glycerol-3-phosphate (G3P) is one of the chemical signals that play an important role in SAR. G3P is synthesized in the cytosol and chloroplasts via the enzymatic activities of G3P Dehydrogenase (G3Pdh) or Glycerol Kinase (GK). Interestingly, a mutation in three of …

The Role Of Dense Slurry In Achieving Zero Liquid Discharge, D.M. Timmons, Istvan Kovacsics

Coal Combustion and Gasification Products Journal Archive

The Coal Combustion Residual (CCR) and Effluent Limitations Guidelines (ELGs) rules pose significant technical and economic challenges for ash management and for treatment and discharge of flue gas desulfurization (FGD) wastewater at coal-fired power plants. Beneficial use is always a priority for ash, but only about half is being reused on a national basis, and the rest is destined for disposal. The U.S. Environmental Protection Agency identified biological treatment as the baseline treatment technology for FGD wastewater in the ELGs. However, it is becoming evident that bioreactors exhibit high capital and operating costs, occupy significant space, and are sensitive to …

Insights Into Key Gene Regulatory Networks In Borrelia Burgdorferi, William Kenneth Arnold

Theses and Dissertations--Microbiology, Immunology, and Molecular Genetics

Gene regulatory networks are composed of interconnected regulatory nodes created by regulatory factors of multiple types. All organisms finely tune gene expression in order to adapt to and survive within their current niche. Obligate parasitic bacteria are under extreme pressure to quickly and appropriately adapt their gene regulatory programs in order to survive within their given host. Borrelia burgdorferi is one such organism and persists in nature by alternating between two hosts; Ixodes spp. ticks and small vertebrate animals. These two hosts represent drastically different environments; requiring a unique gene regulatory program to survive and transmit between them. Microbiologists have …

Emerald Ash Borer (Coleoptera: Buprestidae) Host Expansion; Trading An Optimal Host For Enemy Free Space?, David G. Olson

Theses and Dissertations--Entomology

Emerald ash borer (EAB), Agrilus planipennis (Coleoptera: Buprestidae), is an aggressive invader from Asia that has killed millions of trees in North America. Recently EAB has been documented developing in a novel host, white fringetree, Chionanthus virginicus. I evaluated larval performance in two common ash species and white fringetree by infesting excised bolts with emerald ash borer eggs. In addition I evaluated several plant characteristics to determine which most influence larval development. I also conducted choice and no choice assays using the classical biological control agent, Tetrastichus planipennisi (Hymenoptera: Eulophidae), to assess its ability to locate larval EAB in …

Dna Barcoding As A Tool For Species Discovery And Documentation In The Superfamily Ichneumonoidea, Sarah Meierotto

Theses and Dissertations--Entomology

Changes to traditional taxonomic methods to incorporate new technologies and methods have already improved the quality of species hypotheses, but more work can be done to improve the speed of new species documentation. The mitochondrial COI DNA barcode has been successfully used to identify species with high accuracy since the early 2000s, and has been used in conjunction with morphological examinations and other DNA markers to discover and delimit new species. This thesis explores the application of DNA barcodes as the primary data for delimitation and diagnosis of new species of ichneumonoids.

The genera Zelomorpha and Hemichoma are revised and …

Analyzing Physical Education Teacher Behavior Using Systematic Observation, Seth T. Eckler

Theses and Dissertations--Education Sciences

Introduction: Experts in the field have advocated that quality physical education (QPE) is the centerpiece of a comprehensive school physical education program (CSPAP). Evidence-based programs and instructional models have shown great promise in increasing the physical activity (PA) of today’s youth. However, little is known about the specific impact of teaching behaviors (TB) used within these programs and their impact on student outcomes. Therefore, the aim of this study was to use a systematic observation method that is primarily focused on analyzing TBs that are displayed in class, identify TBs that may contribute to positive student activity outcomes, and make …

Functional Characterization Of Scaffold Protein Shoc2, Hyein Jang

Theses and Dissertations--Molecular and Cellular Biochemistry

Signaling scaffolds are critical for the correct spatial organization of enzymes within the ERK1/2 signaling pathway and proper transmission of intracellular information. However, mechanisms that control molecular dynamics within scaffolding complexes, as well as biological activities regulated by the specific assemblies, remain unclear.

The scaffold protein Shoc2 is critical for transmission of the ERK1/2 pathway signals. Shoc2 accelerates ERK1/2 signaling by integrating Ras and RAF-1 enzymes into a multi-protein complex. Germ-line mutations in shoc2 cause Noonan-like RASopathy, a disorder with a wide spectrum of developmental deficiencies. However, the physiological role of Shoc2, the nature of ERK1/2 signals transduced through this …