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Articles 3241 - 3270 of 116521
Full-Text Articles in Entire DC Network
Characterization Of The Human Thnatomicrobiome By Decomposition Stage Through Bioinformatic And Meta Data Analysis, Ashton C. Laughlin
Characterization Of The Human Thnatomicrobiome By Decomposition Stage Through Bioinformatic And Meta Data Analysis, Ashton C. Laughlin
Biology Theses
Estimating the postmortem interval (PMI) is one of the most crucial factors in forensic death investigations. Recent advances in forensic microbiology have led to increased interest in using the study of the human postmortem microbiome, or “thanatomicrobiome,” to improve PMI estimates. In addition to current PMI estimation techniques, microbial community succession could serve as a valuable tool in estimating PMI. Further research is needed to develop a comprehensive understanding of the human postmortem microbiome. The purpose of this study is to contribute to the expansion of this tool by reviewing the current literature and analyzing previously published data using the …
Adversarial Robustness In Biomedical Time-Series Models, Rohan Tiwari
Adversarial Robustness In Biomedical Time-Series Models, Rohan Tiwari
Bioengineering Theses
This study investigates adversarial vulnerabilities in deep learning models for biomedical time-series classification across two clinically important modalities: electrocardiography (ECG) and electroencephalography (EEG). Using the MIT-BIH Arrhythmia and CHB-MIT seizure datasets, I evaluate time-domain attacks (FGSM, PGD), Fourier-domain constrained attacks, and learned spectral perturbations designed to reveal modality-specific sensitivity patterns. Across both tasks, a consistent trend emerges low-frequency components (0–5 Hz) constitute a dominant axis of adversarial vulnerability, with perturbations in this range producing the steepest degradation in classification performance. In ECG models, protecting the physiologically relevant QRS band (5–20 Hz) significantly improves robustness, whereas EEG models remain highly sensitive …
Kinase Signaling In Liver Disease Via Clinical-Trial-On-A-Pamchip: A Distinctive Methodology For Drug Mechanisms And Personalized Medicine, Zachary A. Kipp, Evelyn A. Bates, Genesee J. Martinez, Wang-Hsin Lee, Sally N. Pauss, Terry D. Hinds, Jr.
Kinase Signaling In Liver Disease Via Clinical-Trial-On-A-Pamchip: A Distinctive Methodology For Drug Mechanisms And Personalized Medicine, Zachary A. Kipp, Evelyn A. Bates, Genesee J. Martinez, Wang-Hsin Lee, Sally N. Pauss, Terry D. Hinds, Jr.
Pharmacology and Nutritional Sciences Faculty Publications
The utilization of extensive datasets, such as those generated by DNA or RNA sequencing, has become a central focus in drug discovery and personalized medicine (PerMed). Nonetheless, these datasets are constrained by the absence of protein-functionality testing, which affects physiological responses. In this study, we employed PamGene PamStation technology to quantify protein function by kinase activity across more than 500 signaling pathways from patients with hepatocellular carcinoma (HCC). Using proteins derived from nine patients and five human HCC cell lines for drug discovery and the clinical trial-on-a-chip approach, we developed comprehensive PerMed scores from the PamStation data to differentiate individual …
Signaling Scaffold Shoc2 Regulates Lymphangiogenesis By Suppressing Mtorc1-Mediated Ifn Responses, Patricia Wilson, Vishakha Vishwakarma, Rebecca Norcross, Kashmira Khaire, Van N. Pham, Brant M. Weinstein, Hyun Min Jung, Emilia Galperin
Signaling Scaffold Shoc2 Regulates Lymphangiogenesis By Suppressing Mtorc1-Mediated Ifn Responses, Patricia Wilson, Vishakha Vishwakarma, Rebecca Norcross, Kashmira Khaire, Van N. Pham, Brant M. Weinstein, Hyun Min Jung, Emilia Galperin
Molecular and Cellular Biochemistry Faculty Publications
An interplay of growth factors and signaling pathways governs the development and maintenance of lymphatic vasculature, ensuring proper fluid homeostasis and immune function. Disruption of these regulatory mechanisms can lead to congenital lymphatic disorders and contribute to various pathological conditions. However, the mechanisms underlying the molecular regulation of these processes remain elusive. Here, we reveal a critical and previously unappreciated role for the signaling scaffold protein Shoc2 in lymphangiogenesis. We demonstrate that loss of Shoc2 results in near-complete loss of lymphatic vasculature in vivo and senescence of lymphatic endothelial cells in vitro. Mechanistically, Shoc2 is required for balancing signaling through …
Current And Emerging Therapeutic Strategies For The Treatment Of Duchenne Muscular Dystrophy, Miguel A. Lopez Perez, Noah L. Weisleder
Current And Emerging Therapeutic Strategies For The Treatment Of Duchenne Muscular Dystrophy, Miguel A. Lopez Perez, Noah L. Weisleder
Molecular and Cellular Biochemistry Faculty Publications
Background/Objectives: Duchenne muscular dystrophy (DMD) is a fatal, progressive neuromuscular disorder caused by mutations in the dystrophin gene, leading to the absence of functional dystrophin protein. As the largest gene in the human genome, the DMD locus is highly susceptible to mutations, contributing to a prevalence of approximately 1 in 3800–6300 live male births worldwide. This review aims to provide a comprehensive and critical synthesis of current and emerging therapeutic strategies for DMD.
Methods: We conducted a narrative review of the literature, integrating findings from clinical trials, regulatory approvals, and preclinical studies. We categorized therapeutic approaches into mutation-agnostic and mutation-specific …
Bringing The Outdoors In Through Biophilic Design, Gabriela Miotto Leal
Bringing The Outdoors In Through Biophilic Design, Gabriela Miotto Leal
Architectural Studies Honors Papers
This thesis investigates the relationship between architecture, human perception, and well-being through the lens of human-centered and biophilic design. Drawing from philosophical traditions, phenomenology, and contemporary neuroscience, this thesis argues that the built environment is an active agent in shaping cognition, emotion, and lived experience. Architecture is understood as multisensory, embodied, and temporally experienced, influencing individuals in both conscious and nonconscious ways. Through a comparative analysis of three case studies, Paimio Sanatorium, AEA House, and the Amazon Spheres, this research examines how biophilic design principles are incorporated into different contexts such as healthcare, residential, and workplace. Each project demonstrates a …
A Novel Tyrosine Kinase Axis In Innate Immune Signaling, Santanu Das, Pracheta Sengupta, Manoj Veleeparambil, Saurabh Chattopadhyay
A Novel Tyrosine Kinase Axis In Innate Immune Signaling, Santanu Das, Pracheta Sengupta, Manoj Veleeparambil, Saurabh Chattopadhyay
Microbiology, Immunology, and Molecular Genetics Faculty Publications
Tyrosine phosphorylation has emerged as a central regulatory mechanism in innate immunity. Building on our recent studies that Syk and EGFR sequentially phosphorylate TLR9 to fully activate it, we discuss how similar mechanisms operate across other Toll-like receptors and the cytosolic DNA sensor STING. Evidence from complementary systems reveals that receptor and nonreceptor tyrosine kinases, including Src-family kinases, Syk, BTK, and EGFR, form an integrated signaling network that triggers receptor activation, trafficking, and downstream gene expression. Scavenger receptors such as SR-A further drive this kinase cascade by coordinating viral recognition to TLR activation. These observations reveal a novel ‘tyrosine kinase …
Maternal Opioid Use Disorder And Hepatitis C Infection In Pregnancy Reshape The Peripheral Immune Landscape At Term, Brianna M. Doratt, Heather E. True, Sheridan B. Wagner, Delphine C. Malherbe, Zachary M. Reynolds, Cynthia Cockerham, John O'Brien, Ilhem Messaoudi
Maternal Opioid Use Disorder And Hepatitis C Infection In Pregnancy Reshape The Peripheral Immune Landscape At Term, Brianna M. Doratt, Heather E. True, Sheridan B. Wagner, Delphine C. Malherbe, Zachary M. Reynolds, Cynthia Cockerham, John O'Brien, Ilhem Messaoudi
Microbiology, Immunology, and Molecular Genetics Faculty Publications
Background: Pregnancy requires precisely timed immune adaptations to maintain foetal tolerance while enabling timely initiation of labour, a process often conceptualised as the ‘immune clock’ of pregnancy. Disruption of this immune clock contributes to adverse obstetric outcomes. While maternal opioid use disorder (OUD) is a recognised risk factor for poor maternal and neonatal health, its impact on maternal immune landscape at delivery remains poorly understood.
Methods: We analysed peripheral blood collected from pregnant individuals with and without OUD at time of admission for delivery before the onset of active labour. We employed multiparameter flow cytometry, cytokine profiling, and single-cell-RNA sequencing …
Investigating The Impact Of Cyanobacterial Harmful Algal Blooms On Freshwater Bivalves, Destiny Devlin
Investigating The Impact Of Cyanobacterial Harmful Algal Blooms On Freshwater Bivalves, Destiny Devlin
Theses, Dissertations and Culminating Projects
Harmful algal blooms (HABs) threaten freshwater ecosystems by producing toxins that disrupt aquatic organism functions and pose risks to human health. This study investigated how exposure to toxin-producing cyanobacteria affects the behavior and toxin accumulation of Asian clams (Corbicula fluminea) under controlled laboratory conditions. Asian clams were collected from a freshwater site in New Jersey, maintained in greenhouse bins, and fed either Microcystis novacekii (non-toxin-forming, control N=3) or Microcystis aeruginosa (toxin-forming, experimental N=3) at 100,000 cells/mL for 28 days. Weekly behavioral assays were conducted to track shell opening, burying, clustering, valve closure, foot extension, and time to first opening. Toxin …
Intelligent Dual-Energy X-Ray Absorptiometry (Idxa) And Small Animal Scanning As A Useful Tool To Measure Appendicular Bird Bone Mineral Density, Frank J. Dirrigl Jr., Samuel R. Buchanan
Intelligent Dual-Energy X-Ray Absorptiometry (Idxa) And Small Animal Scanning As A Useful Tool To Measure Appendicular Bird Bone Mineral Density, Frank J. Dirrigl Jr., Samuel R. Buchanan
School of Integrative Biological & Chemical Sciences Faculty Publications
Accurately assessing the bone mineralization status of birds is crucial for poultry production and wild bird studies. We investigated the use of dual-energy x-ray absorptiometry (DXA) using Small Animal Measurement software to measure bone mineral content (BMC) and areal bone mineral density (aBMD) in excised radii of the willow ptarmigan (Lagopus lagopus) as a bird model. Our exploratory tests involved 117 scans to evaluate scanning parameters, scanning board types, bone stabilization, scan mode and size, and region of interest placement. Results indicated that mean BMC or aBMD were each significantly different when scanned on a forearm positioner board …
Effects Of Particle Size Difference In Two Different Sweet Bran Products On Total Tract Digestibility And Rumen Ph, Emily K. Hoefling, Anna Kobza, Jessica L. Miller, Maggie E. Youngers, Galen E. Erickson, Jim C. Macdonald
Effects Of Particle Size Difference In Two Different Sweet Bran Products On Total Tract Digestibility And Rumen Ph, Emily K. Hoefling, Anna Kobza, Jessica L. Miller, Maggie E. Youngers, Galen E. Erickson, Jim C. Macdonald
Nebraska Beef Cattle Reports
Summary with Implications
Seven ruminally fistulated heifers were utilized in a 6 x 7 row-column design to evaluate two different Sweet Bran particle size products (1.8 or 2.5 mm) included at 13%, 18%, or 23% of the diet (DM) on total tract digestibility and rumen fermentation parameters. The treatment design was a 2 x 3 factorial. Rumen pH was reduced and organic matter digestibility tended to be reduced with the small particle size when Sweet Bran was included at 13% of the diet. Both NDF digestibility and dietary digestible energy concentration tended to improve with the larger particle size. The …
Evaluation Of Herddogg Remote Sensing Tag On Detection Of Morbidity Of Newly Received Steers, Lauryn O. Smidt, Rebecca Mcdermott, Jessica L. Sperber, Josh R. Benton, Galen E. Erickson, Jim C. Macdonald
Evaluation Of Herddogg Remote Sensing Tag On Detection Of Morbidity Of Newly Received Steers, Lauryn O. Smidt, Rebecca Mcdermott, Jessica L. Sperber, Josh R. Benton, Galen E. Erickson, Jim C. Macdonald
Nebraska Beef Cattle Reports
Summary with Implications
A receiving study was conducted to evaluate the HerdDogg remote sensing tag for the detection of morbidity in newly received steers. Treatments were assigned to cattle in the order they came through the chute, and those included a treatment whereby pen-riders evaluated the cattle and made the decision on when to treat (Pen-Rider), compared to the HerdDogg remote sensing ear tag that solely identified and flagged cattle in need of treatment (TAG). Cattle were fed for 41 days before being weighed off the receiving trial. While no differences in performance were observed, the TAG treatment had a …
Use Of Virtual Fences To Co-Fence Two Groups Of Cattle With Adjacent Virtual Boundaries, Thomas E. Aquino, Mary E. Drewnoski, Biquan Zhao, Pedro Henrique Jota Fernandes, Isaque F. Vicci, Mitchell B. Stephenson, Yijie Xiong
Use Of Virtual Fences To Co-Fence Two Groups Of Cattle With Adjacent Virtual Boundaries, Thomas E. Aquino, Mary E. Drewnoski, Biquan Zhao, Pedro Henrique Jota Fernandes, Isaque F. Vicci, Mitchell B. Stephenson, Yijie Xiong
Nebraska Beef Cattle Reports
Summary with Implications
While virtual fencing (VF) has proven effective in managing cattle, limited data exist on using it to manage two separate groups of cattle within the same area. If successful, this approach could reduce infrastructure costs and increase management flexibility. In this trial, VF-trained steers (n = 39) were placed in pastures with either no neighboring cattle (isolated) or next to a separate group with only a VF boundary between them (co-fenced). Containment exceeded 99% across all cattle, demonstrating that VF creates effective boundaries regardless of fence treatment. There was no statistical difference in the number of audio …
Long-Term Trends Of Annual Herbaceous Expansion In The Nebraska Panhandle: Rangeland Analysis Platform Data, Karley Dieckmann, Mitchell B. Stephenson, Miranda Mueller
Long-Term Trends Of Annual Herbaceous Expansion In The Nebraska Panhandle: Rangeland Analysis Platform Data, Karley Dieckmann, Mitchell B. Stephenson, Miranda Mueller
Nebraska Beef Cattle Reports
Summary with Implications
This descriptive analysis evaluated changes in Annual Forb and Grass (AFG) herbaceous cover in the Nebraska Panhandle from 1986 to 2023 using the Rangeland Analysis Platform (RAP). It was hypothesized that AFG herbaceous cover would show an increasing trend over time, indicating the potential expansion of the annual invasive cheatgrass (Bromus tectorum). County-level RAP data were used to calculate long-term means as an indicator. Results showed an increase in AFG cover across the region. Trends were cyclical, with cover peaking and dipping over time, but the overall trajectory showed increases in AFG in the Panhandle. The increasing …
Impact Of Feeding Palm Oil To Finishing Cattle On Performance, Carcass, And Meat Characteristics, Tate S. Johnson, Rebecca L. Mcdermott, Josh R. Benton, Galen E. Erickson, Jessie C. Morrill, Jim C. Macdonald
Impact Of Feeding Palm Oil To Finishing Cattle On Performance, Carcass, And Meat Characteristics, Tate S. Johnson, Rebecca L. Mcdermott, Josh R. Benton, Galen E. Erickson, Jessie C. Morrill, Jim C. Macdonald
Nebraska Beef Cattle Reports
Summary with Implications
This finishing study evaluated the effect of feeding palm oil products on performance and carcass characteristics, and beef quality measures. Dietary treatments included no supplemental fat or feeding: crude palm oil, crude high-oleic palm oil (HOPO), refined, bleached, and de-odorized palm olein oil (RBD olein), or tallow. Supplemental fat was included at 3.5% of diet dry matter. Cattle fed diets containing supplemental fat had improved feed conversion compared to no supplemental fat. Feeding cattle crude palm oil resulted in improved F:G compared to cattle fed RBD olein, with steers fed tallow and crude HOPO being intermediate and …
Comparison Of Spayed Heifer Performance To Intact Heifers Fed Melengestrol Acetate On Feedlot Performance And Carcass Characteristics, Tate S. Johnson, Rebecca L. Mcdermott, Halden J. Clark, Jim C. Macdonald, Jessica L. Sperber
Comparison Of Spayed Heifer Performance To Intact Heifers Fed Melengestrol Acetate On Feedlot Performance And Carcass Characteristics, Tate S. Johnson, Rebecca L. Mcdermott, Halden J. Clark, Jim C. Macdonald, Jessica L. Sperber
Nebraska Beef Cattle Reports
Summary with Implications
Pregnancy and estrous cycle management are critical considerations when feeding intact heifers in the feedyard. Alternatively, producers can opt to spay heifers, which eliminates hormonal fluctuations associated with the estrous cycle. A proportion of U.S. feedlots have spayed heifers on feed, although there is limited data comparing the performance of spayed heifers to intact heifers. A commercial feedlot experiment was conducted to compare performance between spayed and intact heifers fed melengestrol acetate. Intact heifers had greater ADG and tended to have greater DMI compared to spayed heifers, although no difference in feed conversion was observed. Carcass weight …
Markov Chain Wave Generative Adversarial Network For Bee Bioacoustic Signal Synthesis, Kumudu Samarappuli, Iman Ardekani, Mahsa Mohaghegh, Abdolhossein Sarrafzadeh
Markov Chain Wave Generative Adversarial Network For Bee Bioacoustic Signal Synthesis, Kumudu Samarappuli, Iman Ardekani, Mahsa Mohaghegh, Abdolhossein Sarrafzadeh
Electrical & Computer Engineering Faculty Publications
This paper presents a framework for synthesizing bee bioacoustic signals associated with hive events. While existing approaches like WaveGAN have shown promise in audio generation, they often fail to preserve the subtle temporal and spectral features of bioacoustic signals critical for event-specific classification. The proposed method, MCWaveGAN, extends WaveGAN with a Markov Chain refinement stage, producing synthetic signals that more closely match the distribution of real bioacoustic data. Experimental results show that this method captures signal characteristics more effectively than WaveGAN alone. Furthermore, when integrated into a classifier, synthesized signals improved hive status prediction accuracy. These results highlight the potential …
Recent Insight And Perspective Of Marine-Inspired Biopolymers For Wound Healing Applications - A Review, Muhammad Umar Aslam Khan, Saiqa Yousaf, Abdalla Abdal-Hay, Mohd Faizal Bin Abdullah, Sahar Madani, Muhammad Shahzad Zafar, Goran M. Stojanović, Lobat Tayebi
Recent Insight And Perspective Of Marine-Inspired Biopolymers For Wound Healing Applications - A Review, Muhammad Umar Aslam Khan, Saiqa Yousaf, Abdalla Abdal-Hay, Mohd Faizal Bin Abdullah, Sahar Madani, Muhammad Shahzad Zafar, Goran M. Stojanović, Lobat Tayebi
Electrical & Computer Engineering Faculty Publications
There is an increasing necessity for advanced, sustainable, and biocompatible materials for wound healing as therapeutic and diagnostic products. Marine environments, characterized by high biodiversity, offer an underutilized source of natural resources with enormous potential for creating novel materials for dressings. This review highlights the revolutionary nature of polymeric biomaterials of marine origin, with a focus on polysaccharides, like alginate, chitosan, and carrageenan; proteins, such as collagen and gelatin. These biopolymers are outstanding in their physicochemical properties, such as biodegradability, bioactivity, and modifiable mechanical strength, which enable their use in wound-healing systems. Besides, these biomaterials may be easily chemically and …
Methylseleninic Acid Transformations In Nutrient Rich Water Containing Algae Exposed To Simulated Sunlight, Mikayla Cormier
Methylseleninic Acid Transformations In Nutrient Rich Water Containing Algae Exposed To Simulated Sunlight, Mikayla Cormier
Theses and Dissertations (Comprehensive)
Methylseleninic acid (MSA(IV)) is an organic form of selenium that has been suggested to be one of the most bioaccumulative forms of selenium in aquatic ecosystems. However, there have been no lab studies that confirm this, which is the reason this study was conducted. Once MSA(IV) and other bioavailable forms of selenium enter aquatic ecosystems, organisms such as algae take up these compounds which then bioaccumulate through the food chain. S. obliquus was exposed to 10 ppb MSA(IV) in 10% Bold’s basal medium (BBM) in a growth chamber to mimic environmental conditions over a 7-day period. Carbon traps and filters …
Standardization Of Neuromuscular Reflex Analysis—Role Of Fine-Tuned Vision-Language Model Consortium And Openai Gpt-Oss Reasoning Llm-Enabled Decision Support System, Eranga Bandara, Ross Gore, Sachin Shetty, Ravi Mukkamala, Christopher K. Rhea, Brittany S. Samulski, Amin Hass, Atmaram Yarlagadda, Shaifali Kaushik, Malith De Silva, Andriy Maznychenko, Inna Sokolowska, Kasun De Zoysa
Standardization Of Neuromuscular Reflex Analysis—Role Of Fine-Tuned Vision-Language Model Consortium And Openai Gpt-Oss Reasoning Llm-Enabled Decision Support System, Eranga Bandara, Ross Gore, Sachin Shetty, Ravi Mukkamala, Christopher K. Rhea, Brittany S. Samulski, Amin Hass, Atmaram Yarlagadda, Shaifali Kaushik, Malith De Silva, Andriy Maznychenko, Inna Sokolowska, Kasun De Zoysa
VMASC Publications
Background/Objectives: Accurate assessment of neuromuscular reflexes, such as the Hoffmann reflex (H-reflex), plays a critical role in sports science, rehabilitation, and clinical neurology. Conventional interpretation of H-reflex electromyography (EMG) waveforms is subject to inter-rater variability and interpretive bias, limiting reliability and standardization. This study aims to develop an automated, interpretable, and robust agentic AI–driven framework for H-reflex waveform analysis. Methods: We propose a fine-tuned Vision–Language Model (VLM) consortium combined with a reasoning Large Language Model (LLM)–enabled decision support system for automated H-reflex interpretation. Multiple VLMs were fine-tuned on curated datasets of H-reflex EMG waveform images annotated with expert clinical observations, …
Bariatric Surgery Impacts Immune Cell Metabolism And Function Dependent On Metabolic Status, Samantha N. Hart
Bariatric Surgery Impacts Immune Cell Metabolism And Function Dependent On Metabolic Status, Samantha N. Hart
University of Kentucky Doctoral Dissertations
Type 2 Diabetes (T2D), one of the top ten causes of death worldwide, is fueled by chronic inflammation. T2D is considered a metabolic disease, and there is a great push to target metabolic and associated inflammatory pathways to ameliorate the disease & its comorbidities i.e., obesity and cardiovascular disease. Thus far, clinical trials of anti-inflammatory drugs have had modest impacts on T2D and have not led to changes in clinical practice. This may in part be due to a gap in knowledge in the mechanism(s) driving obesity-associated chronic inflammation. I posit that metabolic abnormalities in immune cells in those with …
The Effects Of Environmental Complexity On Brain Development And Personality Expression In Western Hognose Snakes, Gokulan Nagabaskaran
The Effects Of Environmental Complexity On Brain Development And Personality Expression In Western Hognose Snakes, Gokulan Nagabaskaran
Theses and Dissertations (Comprehensive)
There is growing interest in snake cognition, personality, and welfare as more snakes are kept as pets, yet little research has been conducted. The effects of enrichment and environmental factors have been well documented in other taxa, and recent evidence suggests that snakes may benefit in similar ways. This dissertation investigated the impact of environmental and social enrichment on personality expression, personality stability, and brain development. Western hognose snakes (Heterodon nasicus) were used as the model species, as they are a popular choice in the pet trade. This allows the research to be readily translatable to husbandry practices of many …
Identifying The Physical Activity Promotion Practices Of Obstetricians And Gynecologists: Patients With Endometriosis And Polycystic Ovary Syndrome, Allison P. Herman
Identifying The Physical Activity Promotion Practices Of Obstetricians And Gynecologists: Patients With Endometriosis And Polycystic Ovary Syndrome, Allison P. Herman
Theses and Dissertations (Comprehensive)
Despite efforts to promote physical activity, many females in Canada do not meet recommended physical activity guidelines. For individuals with gynecological conditions such as endometriosis and polycystic ovary syndrome (PCOS), physical activity may aid in symptom management and improve daily functioning. Healthcare settings, including obstetrics and gynecology, represent an area of opportunity to promote physical activity among this population. This thesis aims to understand the physical activity promotion practices of Ontario-based Obstetricians and Gynecologists (OBGYNs) to patients with endometriosis and/or PCOS. A cross-sectional online survey was conducted to explore OBGYNs promotional practices and perceived factors influencing their engagement in physical …
A Phylogenetic Analysis Of Avian-Associated Ixodes Scapularis & Implications For Lyme Disease, Nora Correiro
A Phylogenetic Analysis Of Avian-Associated Ixodes Scapularis & Implications For Lyme Disease, Nora Correiro
Honors Theses
Lyme disease, caused by the bacterium Borrelia burgdorferi and transmitted by the blacklegged tick Ixodes scapularis, is the most common vector-borne illness in the United States. Whereas Lyme disease is concentrated in the northeastern US, I. scapularis exists in the southeast as well, and the ticks in these regions generally separate into northern and southern evolutionary lineages. Although recent analyses suggest unidirectional and limited gene flow from north to south due to behavioral, ecological, and environmental barriers, the mechanisms underlying the persistence of this limited gene flow remain unclear. This study examines whether bird-mediated dispersal may facilitate south-to-north gene …
County-Level Surveillance For The American Dog Tick (Dermacentor Variabilis) And Rickettsia Species In Kentucky, Callista W. Vandegriff, Jun Seok Ryoo, Maria C. Carrasquilla, Anna Rosalee Pasternak, Wayne T. Sanderson, Subba R. Palli
County-Level Surveillance For The American Dog Tick (Dermacentor Variabilis) And Rickettsia Species In Kentucky, Callista W. Vandegriff, Jun Seok Ryoo, Maria C. Carrasquilla, Anna Rosalee Pasternak, Wayne T. Sanderson, Subba R. Palli
Entomology Faculty Publications
Spotted fever group (SFG) rickettsiosis includes a group of illnesses with similar symptoms caused by Rickettsia species bacteria. While Rickettsia rickettsii, the agent of Rocky Mountain spotted fever (RMSF) is a well-known pathogen, other SFG Rickettsia spp. can infect ticks and occasionally contribute to human disease. We conducted county-level surveillance of Dermacentor variabilis ticks in Kentucky to characterize the distribution and diversity of SFG Rickettsia. Ticks were collected from the environment from 2019 to 2024 by dragging a white cloth and through our Kentucky Tick Submission Program. In total, 2,023 D. variabilis ticks were collected from 114 …
Clinical Manifestations Of Bed Bug Bites: A Systematic Review Of Case Reports, Julian Felipe Porras-Villamil, Zachary C. Devries
Clinical Manifestations Of Bed Bug Bites: A Systematic Review Of Case Reports, Julian Felipe Porras-Villamil, Zachary C. Devries
Entomology Faculty Publications
Importance: Clinical characterization of bed bug (Cimex spp.) bite manifestations remains limited. Objective: This systematic review synthesizes case reports to describe dermatological, systemic, and psychological outcomes of bed bug bites. Evidence review: Following PRISMA guidelines, multiple databases, including Pubmed and Scopus, were searched using terms such as “bed bug,” “Cimex lectularius,” “Cimex hemipterus,” “case report,” and “case series.” Extracted data included demographics, species, lesion type, anatomical distribution, and clinical manifestations. Quantitative and qualitative analyses were conducted. Results: Eighty-four patients were included: 76 with C. lectularius (90.5%) and, 8 with C. hemipterus (9.5%). Sex distribution was …
Evolutionary Transitions In Social Behavior Are Associated With Convergent And Partially Reversible Expansions Of Transcription Factor Binding Sites, Savanna G. Ploessl, Beryl M. Jones
Evolutionary Transitions In Social Behavior Are Associated With Convergent And Partially Reversible Expansions Of Transcription Factor Binding Sites, Savanna G. Ploessl, Beryl M. Jones
Entomology Faculty Publications
The evolution of sociality involves shifts in physiology and behavior, most notably the emergence of a reproductive division of labor. Within social colonies, these distinct behavioral phenotypes arise from differential regulation of a shared genome. Changes in transcription factor (TF) binding motifs are one potential mechanism underpinning this plasticity, with prior studies suggesting that social species exhibit expansions in TF binding sites. However, it remains unclear whether motif expansions are reversed when sociality is lost. Here we analyze predicted TF motif occurrences across gene promoters in 42 bee species spanning millions of years of evolutionary divergence and multiple independent gains …
Remote Sensing-Based Rice Detection: Novel Indices From Optical And Sar Synergy, Kaifi Chomani
Remote Sensing-Based Rice Detection: Novel Indices From Optical And Sar Synergy, Kaifi Chomani
Mansoura Engineering Journal
Accurate rice mapping is challenging due to the lack of a simple, efficient approach and the complexity and limited ability of existing methods to distinguish rice fields from non-rice fields. This study proposes two novel indices: the Multispectral Rice Detection Index (MRDI), which utilises optical imagery, and the OptiRadar Rice Index (ORRI), which incorporates both optical and Synthetic Aperture Radar (SAR) data. Ground-truth data from the Cropland Cropping Systems (CROS) were used to assess the performance of both indices. The findings indicated that MRDI achieved an overall accuracy of 97.97% with perfect recall (100%) but lower precision (78.65%). However, the …
The Underappreciated Role Of Rifampin In Shaping The Epidemiology Of Rt027-Like Clostridioides Difficile Lineages, Isabella A. Tickler, Richard V. Goering, Fred Tenover
The Underappreciated Role Of Rifampin In Shaping The Epidemiology Of Rt027-Like Clostridioides Difficile Lineages, Isabella A. Tickler, Richard V. Goering, Fred Tenover
Biology Faculty Publications
The global emergence and dissemination of epidemic Clostridioides difficile ribotype 027 (RT027) and related lineages illustrate the role of antimicrobial pressure in shaping the epidemiology of this pathogen. We propose a hierarchical model in which fluoroquinolones (FQs) served as the dominant selective force underlying the worldwide expansion of RT027-related strains, with rifampin and rifamycins acting as secondary modifiers that promoted persistence and regional dominance. ©
Effects Of Conifer Encroachment On Oregon White Oak Crown Structure And Nonvascular Epiphyte Communities, Courtney Jonell Copper
Effects Of Conifer Encroachment On Oregon White Oak Crown Structure And Nonvascular Epiphyte Communities, Courtney Jonell Copper
Cal Poly Humboldt theses and projects
Oregon white oak (Quercus garryana, QUGA) is an ecologically and culturally important broadleaf tree species native to northern California and the Pacific Northwest. Fire suppression and subsequent encroachment by Douglas-fir (Pseudotsuga menziesii, PSME) and other conifers have made QUGA woodlands among the most threatened habitat types in the region. This study examines the influence of conifer encroachment on QUGA crown structure and nonvascular epiphyte (NVE) communities using ground- and crown-based sampling techniques.
Twenty-four trees were sampled across four sites in northern California along a gradient of conifer encroachment that was quantified as PSME basal area (BA). A …