Digital Commons Network^™

Ex Vivo Single-Molecule Analysis Of Ryanodine Receptor 2 Assembly In Cardiac And Neuronal Tissue, Qianye Yin, Christopher I. Richards

Chemistry Faculty Publications

Understanding receptor assembly is critical for elucidating the mechanisms underlying their function and regulation in physiological processes. While traditional in vitro single-molecule studies rely on isolating proteins from heterologous expression systems, they often fail to capture the in vivo physiological complexity involved in the organization and assembly of cell surface proteins. This protocol employs Total Internal Reflection Fluorescence Microscopy (TIRFM) to study GFP-tagged Ryanodine Receptor 2 (RyR2) molecules encapsulated within nanoscale vesicles. These vesicles, generated from organs rapidly extracted from the animal, effectively provide a snapshot of the receptor's assembly state at the time of extraction, enabling detailed analysis of …

Incarceration Reimagined: A Diversionary Option For Serious Felony Offenders, Jane Mitchell

Kentucky Law Journal

No abstract provided.

Converting “Nonlesional” Imaging Occult Epilepsy Into A Focal Lesional Entity Using Advanced Imaging Techniques: Illustrative Case, Muhammad Usman Khalid, Flavius D. Raslau, Valentinos Zachariou, David Powell, Zachary Winder, Ryan Cloyd, Sarah Helen Thomas, John Kuipers, Rachel Ward Mitchell, Riham H. El Khouli, Timothy J. Ainger, Sally Mathias, Farhan A. Mirza

Neurosurgery Faculty Publications

BACKGROUND To achieve the best possible outcome in surgical refractory epilepsy, the seizure onset zone must be accurately identified prior to treatment.

OBSERVATIONS A 38-year-old man presented with tonic-clonic and focal seizures 2–3 times per month, refractory to antiseizure medications. Scalp EEG, MRI, PET, ictal SPECT, magnetoencephalography, and stereo-EEG (SEEG) did not provide conclusive seizure onset zone localization. Subsequently, the patient was included in the authors’ ongoing postictal arterial spin labeling (ASL) study and additional postprocessing was performed with a morphometric analysis program (MAP) and texture analysis. Using these results, the authors reexamined the original structural MR images, with attention …

New Insights Into The Ovulatory Process In The Human Ovary, Misung Jo, Mats Brännström, James W. Akins, Thomas E. Curry

UK CARES Faculty Publications

BACKGROUND: Successful ovulation is essential for natural conception and fertility. Defects in the ovulatory process are associated with various conditions of infertility or subfertility in women. However, our understanding of the intra-ovarian biochemical mechanisms underlying this process in women has lagged compared to our understanding of animal models. This has been largely due to the limited availability of human ovarian samples that can be used to examine changes across the ovulatory period and delineate the underlying cellular/molecular mechanisms in women. Despite this challenge, steady progress has been made to improve our knowledge of the ovulatory process in women by: (i) …

Exploiting Artificial Intelligence And Optimization For Smart Agriculture, Jackson K. Butcher

Theses and Dissertations--Computer Science

Dynamic integration of Cyber-Physical Systems (CPS) and Artificial Intelligence (AI) has become a vital component for unlocking the potential of smart agriculture. Currently, limitations such as limited computational resources, poor network connectivity, and rigid treatment strategies stifle optimal agricultural outcomes. This creates a challenge of leveraging the capabilities of modern artificial intelligence to combat the natural and artificial constraints of the smart agriculture environment. The primary contribution of this thesis is the development of frameworks to alleviate the overhead data and computational demand for AI within smart agriculture settings. The first framework, iCrop+, utilizes TinyML and LoRa to guarantee high-precision …

Comparison Of Video Modeling And Naturalistic Time Delay For Children With Autism In Preschool Classrooms, Makenna A. Briggs

Theses and Dissertations--Early Childhood, Special Education, and Counselor Education

This study presents findings from an alternating adapted treatments design (AATD) that compared the use of video modeling and naturalistic time delay to teach language targets to children with autism. The research included two U.S. preschool students with a provisional diagnosis of autism spectrum disorder (ASD). Both participants met criterion with time delay.

German Cockroach Allergen Mitigation, Olivia Katz

Theses and Dissertations--Entomology

German cockroaches (Blatella germanica L.) remain one of the most challenging indoor pests to manage, due in large part to their cryptic nature, rapid reproduction, and resistance to insecticides. Because of their close proximity to humans, they also pose several serious health threats, including the production and dissemination of several potent allergens linked to asthma development and exacerbation. Given the risks associated with cockroach allergens, we examined the longevity of two distinct cockroach allergens (Bla g 1 and Bla g 5) in the home environment and the efficacy of cleaners at removing these allergens. Our findings show that Bla …

Seasonal Variation Of The Stream’S Autogenic Sediment Transport Regime, Melissa Beckman

Theses and Dissertations--Civil Engineering

This thesis investigates the autogenic sediment transport regime in a low-gradient stream system in the inner bluegrass region of central Kentucky, USA The seasonality of sediment transport seasonality was not well addressed in prior research for baseflow and low flow periods, to our knowledge, due to the assumption that low flows do not account for considerable fluid transport capacity to move sediment. The hypothesis is that during the autogenic regime the sediment transport in the low-gradient system is being driven by geophysical, biogeochemical, and biological processes. We hypothesize that crayfish are one mechanical driver of sediment transport during these periods. …

Implications Of Nutrient Fate And Transport Following Nanopesticide Applications In Agricultural Field Plots In Central Kentucky, William Rud, Manuel D. Montaño, Daniel M. Miller, Wayne T. Sanderson, Carmen Agouridis, Brianna F. Benner, Tiffany L. Messer

Biosystems and Agricultural Engineering Faculty Publications

The potential benefits of nanopesticide use over standard pesticides include more precise application at reduced application rates, lower premature degradation, and decreased direct impacts to target organisms. However, field scale investigations of the fate and transport of common nanopesticides such as copper (II) hydroxide and imidacloprid combinations, remain limited. A field study evaluating nano-scale copper (II) hydroxide (Cu), standard imidacloprid (I), nanoimidicloprid (NI), and nano-scale copper (II) hydroxide and imidacloprid (CuNI) compared to control (C) plots was conducted using thirty 14.6 m² field plots to determine the impacts of nanopesticide applications on nutrient cycling and quantify the persistence of …

Alzheimer’S Disease And The Immune System: The Emerging Role Of Temra Cells, Edric D. Winford, Adam D. Bachstetter

Neuroscience Faculty Publications

No abstract provided.

Complete High Thoracic Spinal Cord Injury Causes Bowel Dysfunction In Mice, Olivia Wireman, Ellie L. Sams, Lynnet E. Richey, Gabrielle V. Hammers, Andrew N. Stewart, William M. Bailey, Samir P. Patel, John C. Gensel

Spinal Cord and Brain Injury Research Center Faculty Publications

Bowel dysfunction, is a prevalent and life-impacting comorbidity of spinal cord injury (SCI) with no long-term treatment available. SCI-induced colon changes including motility and fibrosis are understudied as are strategies to address SCI bowel dysfunction. This need remains partly due to the lack of a mouse model that recapitulates the human condition. We hypothesized that a high thoracic spinal transection in mice would trigger bowel dysfunction with coincident colon pathology similar to humans and rats after SCI. We observed bowel dysfunction as increased fecal pellet numbers within the colon, smaller pellet size, and decreased motility. Fecal pellets numbers in the …

Trace Level Identifications Of N-Ethylnicotinamide In Racing Horses Associated With A Vitamin B3 Supplement: Case Reports And Analysis, Clara Fenger, Kimberly Brewer, Abelardo Morales-Briceño, Andreas F. Lehner, George A. Maylin, Robert Holland, Levent Dirikolu, Thomas Tobin

Maxwell H. Gluck Equine Research Center Faculty Publications

Nikethamide, N,N-diethyl-3-pyridinecarboxamide (Coramine®) is a central nervous system stimulant at one time used therapeutically in human medicine but no longer marketed in the US. Nikethamide is classified a Drug Class 1, Penalty Class A substance by the Association of Racing Commissioners International (ARCI) and as a Horseracing Integrity and Safety Authority (HISA) SO or banned Stimulant that lacks FDA approval. Identifications of Nikethamide or its metabolite N-Ethylnicotinamide in racing samples can result in significant penalties in horse racing. Nikethamide is rapidly metabolized to N-Ethylnicotinamide, which remains detectable in plasma and urine leading to its use as a regulatory “marker” of …

Defining An Irrelevant Plasma Concentration For Trichlormethiazide In Racing Horses – A Case Report And Analysis, Kimberly Brewer, Justin C. Holmes, Clara Fenger, Abelardo Morales-Briceño, Andreas F. Lehner, George A. Maylin, Robert Holland, Levent Dirikolu, Thomas Tobin

Maxwell H. Gluck Equine Research Center Faculty Publications

This communication reviews the matter of the clinical, pharmacological, and regulatory significance of a 4.95 nanogram/ml identification of trichlormethiazide in urine from a horse six days after administration of a compounded trichlormethiazide/ dexamethasone preparation. This combination of dexamethasone and trichlormethiazide has historically been widely used in bovine and equine medicine to reduce local inflammation and edema. The horse was administered an oral formulation of trichlormethiazide 400 mg /dexamethasone 10 mg per packet under veterinary supervision on days 7 and 6 before the race in question. Following the race, the post-race urine sample from the horse tested “positive” for trichlormethiazide at …

Trace Level Identifications Of N-Ethylnicotinamide In Racing Horses Associated With A Vitamin B3 Supplement: Case Reports And Analysis, Clara Fenger, Kimberly Brewer, Abelardo Morales-Briceño, Andreas F. Lehner, George A. Maylin, Robert Holland, Levent Dirikolu, Thomas Tobin

Maxwell H. Gluck Equine Research Center Faculty Publications

Nikethamide, N,N-diethyl-3-pyridinecarboxamide (Coramine®) is a central nervous system stimulant at one time used therapeutically in human medicine but no longer marketed in the US. Nikethamide is classified a Drug Class 1, Penalty Class A substance by the Association of Racing Commissioners International (ARCI) and as a Horseracing Integrity and Safety Authority (HISA) SO or banned Stimulant that lacks FDA approval. Identifications of Nikethamide or its metabolite N-Ethylnicotinamide in racing samples can result in significant penalties in horse racing. Nikethamide is rapidly metabolized to N-Ethylnicotinamide, which remains detectable in plasma and urine leading to its use as a regulatory “marker” of …

Anabolic Properties Of The Progestin Altrenogest And Its Regulation As An Environmental Substance In Horse Racing – Review And Analysis, Andreas F. Lehner, Levent Dirikolu, Sarah Jacob, Kimberly Brewer, Abelardo Morales Briceñoe, Robert Holland, George Maylin, Clara Fenger, Thomas Tobin

Maxwell H. Gluck Equine Research Center Faculty Publications

Altrenogest is a progestogen substance used in equine medicine for the synchronization of ovulation during the spring breeding season and the control of estrus in mares. It accomplishes its actions by down-regulation of endometrial progesterone receptors and repression of estrogen receptor transcriptional activation. However, various groups have also measured androgen receptor binding activity for altrenogest in vitro; these findings combined with androgenic and anabolic properties roughly 1/20 in potency of testosterone and its structural similarity to the anabolic steroid trenbolone have created concerns among racing authorities of altrenogest’s potential abilities to alter the outcome of equine athletic performance, even though …

Listening To Cursive: The Roles Of Regional Identity And Folk Beliefs In Perceptual Cue-Weighting, Stella Takvoryan

Theses and Dissertations--Linguistics

Listeners use knowledge acquired from experiences to weight phonetic-level cues to phonological contrasts. Phonetic knowledge is imbued with expectations about the contexts in which cues covary, speakers of a variety, and identity categories or constructs, so it can be challenging to distinguish expectations about variation from expectations about speakers. This study aims to explore the extent that expectations about iconic vowel quality variation in Southern American Englishes can drive cue-weighting. Listeners categorized stimuli with vowel qualities synthesized from an [ɛ]-[eɪ] continuum from a Southern and a non-Southern talker, with duration manipulated in tandem. Half of the participants saw a label …

The Effect Of Fructose Metabolism On Hepatic De Novo Lipogenesis And Adipose Tissue Insulin Resistance, Taghreed Ibrahim Fadhul

Theses and Dissertations--Nutritional Sciences

There is a worldwide epidemic of obesity and metabolic dysfunction. The root cause of obesity is driven by a positive energy balance, which is a consequence of increased caloric intake and decreased energy expenditure. Energy intake is the more dominant force, as increasing energy expenditure is a time-consuming and labor-intensive process. The caloric surplus can be mainly accounted for by increased consumption of high-fat and high-sugar diets. While the risks associated with fat consumption are well-documented, the impact of sugar intake is less understood.

Fructose is a simple sugar widely consumed in modern diets. Its intake has been associated with …

Spermidine And Polyamine Blockade As Key Mediators Of Intestinal Epithelial Cell Functions, Madison Lynn Flory

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

Frequently, alterations in the composition of the gut microbiota and its metabolites are linked with intestinal diseases, including inflammatory bowel disease and colorectal cancer. However, the direct connections between alterations in the microbiome and disease states often remain elusive. Prior research has identified increases in both polyamines, which are a class of microbial metabolite, and in the abundance of bacteria that can produce polyamines, in a murine colorectal cancer model. Understanding the significance of the interaction between these microbial metabolites and intestinal epithelial cells (IECs) will provide new and expanded evidence of the importance of the gut microbiome in colorectal …

Common Law Executive Privilege(S), Jonathan Shaub

Law Faculty Scholarly Articles

There are few Supreme Court cases that enjoy as much widespread support as the unanimous decision in United States v. Nixon. The recent pitched battles between Congress and the executive branch have made apparent the vast disagreement between the two branches over access to information. But that disagreement does not extend to Nixon, the unquestioned jurisprudential foundation for the doctrine of executive privilege. Closer inspection shows, however, that this foundation is not a stable one, but one constructed from unnecessary, ill-considered dicta.

As this Article demonstrates, Nixon conflated the constitutional question about one branch’s power vis-à-vis another branch with an …

Visual Legal Rhetoric In The Age Of Generative Ai And Deepfakes: Renaissance Or Dark Ages?, Michael D. Murray

Law Faculty Scholarly Articles

The paradoxical development of visual generative AI tools, such as OpenAI’s DALL-E 3, Midjourney, and Stable Diffusion, simultaneously signals a renaissance and a potential dark age in visual rhetoric and communication. On the one hand, these tools democratize the creation of visual content, empowering attorneys and others to become artists and illustrators of their legal communications without needing to learn how to draw. These AI systems can simplify complex legal concepts, bridge language barriers, and enhance advocacy. But on the other hand, the proliferation of deepfakes presents significant challenges for visual rhetoric. Deepfakes can quickly and easily create realistic but …

Open Access And Citation Impact: Modality, Funding, Publisher, And Disciplinary Trends At The University Of Kentucky, Ben Rawlins, Mitchell Scott

Library Faculty and Staff Publications

As publishers and libraries attempt to align business models and collection strategies to an ever-increasing open access (OA) publishing landscape, both have found that the message of open access citation advantage (OACA) resonates with current and prospective authors. Despite its widespread promotion and acceptance, however, OACA is not universal and is subject to ongoing debate. This quantitative study contributes to the OACA debate and research with a longitudinal focus on citation data from journal articles published 2018-2021 by University of Kentucky affiliated authors. The article and citation data for University of Kentucky affiliated authors are supplemented with University of Kentucky …

Quieting The Cacophony: How To Reduce Greenwashing And Environmental Damage From The Food Industry, Alex Woodward

Kentucky Journal of Equine, Agriculture, & Natural Resources Law

In this article, Alex G. Woodward addresses the problem of greenwashing and environmental harm caused by industrial agriculture and misleading food labeling. Woodward explains that while agriculture is essential to feeding a growing global population, its large-scale, profit-driven practices cause significant environmental damage. Woodward argues for a strategy that compels transparency through warning labels and expanding credible certification frameworks. Woodward proposes that the USDA implement a tiered labeling system under its Organic Program and require factual, noncontroversial disclosures about environmental harms on food packaging, with the goal of informing consumers, restoring trust, and incentivizing environmentally responsible agricultural practices.

The Impact Of Veterinary Stewardship Program Implementations On Backyard Chicken Farming In Rural Georgia, Lauren Ashley Herrin

Kentucky Journal of Equine, Agriculture, & Natural Resources Law

In this article, Lauren Ashley Herrin examines the impacts of new FDA veterinary stewardship regulations on backyard chicken farming in rural Georgia. She explains that requiring prescriptions for previously over-the-counter antibiotics disproportionately harms low-income and rural communities by limiting access to affordable veterinary care, worsening risks of disease spread and public health threats. Herrin argues for policy approaches that balance antimicrobial resistance concerns with the realities of rural accessibility. She proposes solutions such as telehealth veterinary consultations, scholarship programs to encourage rural veterinary practice, and expanding prescriptive authority for veterinary technicians to ensure sustainable animal health care in underserved areas

Pesticide Lies! A Call For Epa Action As Recent Judicial Decisions Reveal The Harmful Truth Resulting From Exposure, Stevi Whitman

Kentucky Journal of Equine, Agriculture, & Natural Resources Law

In this note, Stevi Whitman analyzes the dangers of weak pesticide regulation in the United States. Whitman explains that the EPA’s reliance on the vague “unreasonable adverse effects” standard under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) allows harmful products like Roundup to remain on the market despite strong evidence of health risks. Whitman argues for strengthening U.S. pesticide laws to match the European Union’s stricter safety threshold. She proposes amending FIFRA to require proactive bans on hazardous pesticides and greater accountability from manufacturers to better protect public health and the environment.

Chronic Sleep Fragmentation Differentially Affects Alzheimer’S Disease Pathology In Male And Female AppSaa Knock-In Mice, Margaret R. Hawkins, Haleigh R. Whitlock, Carrie E. Johnson, Teresa Macheda, Ma Kayla F. Cox, Madison G. Lapid, Kelly N. Roberts, Heather M. Hash, Esther G. Drinkard, Sridhar Sunderam, Bruce F. O’Hara, Michael P. Murphy, Marilyn J. Duncan, Adam D. Bachstetter

Biology Faculty Publications

Introduction: Sleep fragmentation often precedes Alzheimer’s disease (AD) diagnosis and represents a potential modifiable risk factor, especially among women who have higher prevalence of both sleep disorders and AD. Methods: This study investigated how chronic sleep fragmentation affects neuroinflammation and amyloid-beta (Aβ) accumulation in male and female APP^SAA knock-in mice, a physiologically relevant AD model expressing APP at normal levels. APP^SAA mice of both sexes (N=8/sex/strain, 8 months old) underwent either 5 weeks of chronic sleep fragmentation administered during the light phase using an automated sweeper system or undisturbed sleep. Sleep-wake patterns and circadian rhythms were monitored using …

Simpson's Tachytely Or Bradytely? The Importance Of Quantifying Rate Uncertainty, Rosana Zenil-Ferguson, Lee Hsiang Liow

Biology Faculty Publications

The spectacular variation in species forms and richness across space and time can be explored using sophisticated and powerful tools recently developed by evolutionary modellers. In this contribution, we ask if the classic ‘Simpsonian’ view of tachytelic (fast), horotelic (standard) and bradytelic (slow) diversification rates can be distinguished with currently available tools and data. A neglected topic here is the role that the uncertainty of diversification rate estimates plays, where the lack of in-depth uncertainty measures could hinder our ability to confidently suggest differences in speciation or extinction rates in any given comparison. We propose quantifying the relative uncertainty of …

“I Just Don’T Find It Interesting”, Jennifer L. Osterhage, Utku Caybas, Jaeyun Han, Ellen L. Usher

Biology Faculty Publications

Situated expectancy-value theory (SEVT) posits that students’ expectancies for success, task values, and perceived costs affect their performance in STEM courses. Less is known about how students’ majors and timing of course completion affect motivational processes. Using the SEVT framework, this study utilised a convergent mixed methods approach to investigate academic motivation among students (N = 646) who enrolled in introductory biology at a large public university. Survey data revealed that students majoring in Biology were more motivated than students from other majors, although academic major was not directly associated with final grade. Upper-level students reported significantly lower competence-related beliefs …

Seasonal Divergence In Reproductive Timing On The Verge Of Spring, Devraj Singh, Adam M. Fudickar, Ellen D. Ketterson

Biology Faculty Publications

Every year as spring approaches and day length increases, many birds begin to reproduce, an annual expression of seasonal phenology that requires physiological preparation. In species distributed over a broad geographic range, populations that breed at higher latitudes are often migratory and delay reproduction until later in the year as compared to those breeding at lower latitudes. Dark-eyed Juncos serve as an excellent model for understanding the timing mechanisms regulating population-level variation in seasonal reproductive responses. We compared two seasonally sympatric dark-eyed junco populations in early spring. One migrates (Junco hyemalis hyemalis) and breeds in Alaska and Canada, while the …

The New American Farmer – Extension Engagement With Urban Agriculture And Food Systems, Margaux S.C. Robinson, Kc V. Cunningham, Jeffery A. Young, Nicole D. Breazeale, Kenneth Jones, Julie Zimmerman

Sociology Faculty Publications

Extension's evolving role in urban food production will require intensive reflexivity and ongoing collaboration. Extension educators around the country have already made progress in engaging with both the social and horticultural sides of urban agriculture. Designed appropriately, urban food systems hold the potential for healthy food access, community and environmental resilience, and economic prosperity (Rangarajan & Riordan 2019). Moving forward, we offer recommendations for Extension staff to apply within their institutions and beyond. Specifically, we urge Extension to prioritize the following: 1) mediate the rural/urban dichotomy, 2) tackle structural and institutional power dynamics, and 3) intensify strategies for community resilience.

Antibiotic Alternatives And Next-Generation Therapeutics For Salmonella Control: A One Health Approach To Combating Antimicrobial Resistance, Mohamed Saleh, Ashutosh Verma, Khaled A. Shaaban, Yosra A. Helmy

Veterinary Science Faculty Publications

The growing prevalence of antimicrobial resistance has significantly compromised the efficacy of conventional antibiotic-based interventions in controlling Salmonella infections across human and veterinary settings. This growing challenge necessitates a strategic rethinking of pathogen control, prompting the integration of next-generation therapeutics capable of disrupting Salmonella pathogenesis through novel, antibiotic-sparing mechanisms. In this context, a diverse array of emerging alternatives, including bacteriophages, antimicrobial peptides, probiotics, prebiotics, short-chain fatty acids, nanoparticles, and host-directed immunomodulators, have gained prominence as a promising frontier in non-antibiotic therapeutics. These modalities offer targeted approaches to inhibit Salmonella colonization, virulence expression, and persistence, while minimizing collateral damage to the …