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United States National Science Foundation (NSF) Scientific Integrity Policy

Prebiotic Proanthocyanidins Inhibit Bile Reflux–Induced Esophageal Adenocarcinoma Through Reshaping The Gut Microbiome And Esophageal Metabolome, Katherine M. Weh, Connor L. Howard, Yun Zhang, Bridget A. Tripp, Jennifer Clarke, Amy B. Howell, Joel H. Rubenstein, Julian A. Abrams, Maria Westerhoff, Laura A. Kresty

Department of Statistics: Faculty Publications

The gut and local esophageal microbiome progressively shift from healthy commensal bacteria to inflammation-linked pathogenic bacteria in patients with gastroesophageal reflux disease, Barrett’s esophagus, and esophageal adenocarcinoma (EAC). However, mechanisms by which microbial communities and metabolites contribute to reflux-driven EAC remain incompletely understood and challenging to target. Herein, we utilized a rat reflux-induced EAC model to investigate targeting the gut microbiome–esophageal metabolome axis with cranberry proanthocyanidins (C-PAC) to inhibit EAC progression. Sprague-Dawley rats, with or without reflux induction, received water or C-PAC ad libitum (700 μg/rat/day) for 25 or 40 weeks. C-PAC exerted prebiotic activity abrogating reflux-induced dysbiosis and mitigating …

Foraging Rates From Metabarcoding: Predators Have Reduced Functional Responses In Wild, Diverse Prey Communities, Stella F. Uiterwaal, John Delong

School of Biological Sciences: Faculty Publications

Functional responses describe foraging rates across prey densities and underlie many fundamental ecological processes. Most functional response knowledge comes from simplified lab experiments, but we do not know whether these experiments accurately represent foraging in nature. In addition, the difficulty of conducting multispecies functional response experiments means that it is unclear whether interaction strengths are weakened in the presence of multiple prey types. We developed a novel method to estimate wild predators' foraging rates from metabarcoding data and use this method to present functional responses for wild wolf spiders foraging on 27 prey families. These field functional responses were considerably …

The Emerging Role Of Non-Coding Rnas (Ncrnas) In Plant Growth, Development, And Stress Response Signaling, Amit Yadav, Jyotirmaya Mathan, Arvind Kumar Dubey, Anuradha Singh

Center for Plant Science Innovation: Faculty Publications

Plant species utilize a variety of regulatory mechanisms to ensure sustainable productivity. Within this intricate framework, numerous non-coding RNAs (ncRNAs) play a crucial regulatory role in plant biology, surpassing the essential functions of RNA molecules as messengers, ribosomal, and transfer RNAs. ncRNAs represent an emerging class of regulators, operating directly in the form of small interfering RNAs (siRNAs), microRNAs (miRNAs), long noncoding RNAs (lncRNAs), and circular RNAs (circRNAs). These ncRNAs exert control at various levels, including transcription, posttranscription, translation, and epigenetic. Furthermore, they interact with each other, contributing to a variety of biological processes and mechanisms associated with stress resilience. …

Embracing Diversity In Agricultural Economics, Timothy Meyer

Cornhusker Economics

To steal an overused cliché, “There’s room in the tent for everyone.” Over the 2023 academic year, I have reiterated this message to all my students, with one addition. Not only is there room for everyone, but all are invited AND welcome. Food is something we all have in common, no matter the background. I think this is why producers in the state of Nebraska feel as strongly as they do about the food they produce; it is life-giving and should be taken seriously. Nebraska Agriculture is part of what makes our state great, and that is not a secret …

High-Fat Diet Feeding Exacerbates Hiv-1 Rectal Transmission, Saroj Chandra Lohani, Amanda E. Ramer-Tait, Qingsheng Li

Department of Food Science and Technology: Faculty Publications

High-fat diet (HFD) is well known to impact various aspects of gut health and has been associated with many diseases and inflammation. However, the impact of HFD feeding on HIV-1 rectal transmission has not yet been well addressed. With an increasing threat of HIV-1 infection in men who have sex with men (MSM), where the rectal route is the primary mode of infection, it is imperative to understand the impact of HFD on gut microbiota and inflammation and consequently, its effect on HIV-1 rectal transmission. Here, we utilized our double humanized bone marrow, liver, thymus (dHu-BLT) mouse model to assess …

Experimental Sars-Cov-2 Infection Of Elk And Mule Deer, Stephanie M. Porter, Airn E. Hartwig, Helle Bielefeldt-Ohmann, Jeffrey M. Marano, J. Jeffrey Root, Angela M. Bosco-Lauth

United States Department of Agriculture Wildlife Services: Staff Publications

To assess the susceptibility of elk (Cervus canadensis) and mule deer (Odocoileus hemionus) to SARS-CoV-2, we performed experimental infections in both species. Elk did not shed infectious virus but mounted low-level serologic responses. Mule deer shed and transmitted virus and mounted pronounced serologic responses and thus could play a role in SARS-CoV-2 epidemiology.

Art Teams Year 2 Report, Guy Trainin, Hyeonjin Yoon, Libby Valerio-Boster, Kimberley D'Adamo

Research and Evaluation in Education, Technology, Art, and Design

The Art TEAMS Year 2 Report outlines the progress and achievements of a grant-funded teacher professional learning initiative in art education. Focusing on integrating visual and emerging media arts into various subjects, the project has significantly surpassed its goals, evidencing its success through both qualitative and quantitative assessments. The wide-ranging engagement from educators across different settings underscores the initiative's effectiveness and its role in fostering a vibrant community committed to excellence in art education.

The curriculum developed for teacher professional development spans 8 graduate-level classes, focusing on pedagogy and emerging media arts, and is supported by a dedicated website for …

Parallels Of Quantum Superposition In Ecological Models: From Counterintuitive Patterns To Eco-Evolutionary Interpretations Of Cryptic Species, David G. Angeler, Hannah B. Fried-Petersen

School of Natural Resources: Faculty Publications

Background Superposition, i.e. the ability of a particle (electron, photon) to occur in different states or positions simultaneously, is a hallmark in the subatomic world of quantum mechanics. Although counterintuitive at first sight, the quantum world has potential to inform macro-systems of people and nature. Using time series and spatial analysis of bird, phytoplankton and benthic invertebrate communities, this paper shows that superposition can occur analogously in redundancy analysis (RDA) frequently used by ecologists.

Results We show that within individual ecosystems single species can be associated simultaneously with different orthogonal axes in RDA models, which suggests that they operate in …

Immune Profiling In Puerto Rican Injection Drug Users With And Without Hiv-1 Infection, Sydney J. Bennett, Carmen Ana Davila, Zahiraliz Reyes, Aníbal Valentín-Acevedo, Kim Gocchi Carrasco, Roberto Abadie, M. Caleb Marlin, Marci Beel, Andrew G. Chapple, Samodha C. Fernando, Joel M. Guthridge, Kathy S. Chiou, Kirk Kirk, John T. West, Charles Wood

Department of Sociology: Faculty Publications

Antiretroviral therapy has been effective in suppressing HIV viral load and enabling people living with HIV to experience longer, more conventional lives. However, as people living with HIV are living longer, they are developing aging-related diseases prematurely and are more susceptible to comorbidities that have been linked to chronic inflammation. Coincident with HIV infection and aging, drug abuse has also been independently associated with gut dysbiosis, microbial translocation, and inflammation. Here, we hypothesized that injection drug use would exacerbate HIV-induced immune activation and inflammation, thereby intensifying immune dysfunction. We recruited 50 individuals not using injection drugs (36/50 HIV⁺) …

Influence Of Microbes In Mediating Sorghum Resistance To Sugarcane Aphids, Edith Ikuze, Stephanie Cromwell, Paul A. Ayayee, Joe Louis

Department of Entomology: Faculty Publications

Gut microbiomes profoundly influence insect health and mediate interactions between plant hosts and their environments. Insects, including aphids, harbour diverse obligate symbionts that synthesize essential nutrients and facultative symbionts that enhance host fitness in specific ecological contexts. Sorghum (Sorghum bicolor) is a significant cereal crop cultivated worldwide that has been negatively affected by the presence of an invasive piercing-sucking insect pest, the sugarcane aphid (SCA; Melanaphis sacchari). We previously identified SC265 and SC1345 as the resistant and susceptible sorghum lines, respectively, among the founder nested association mapping (NAM) population. Here, using these resistant and susceptible lines, we …

Investigation Into Cardiacmyhc-Α 334–352-Specific Tcr Transgenic Mice Reveals A Role For Cytotoxic Cd4 T Cells In The Development Of Cardiac Autoimmunity, Meghna Sur, Mahima T. Rasquinha, Kiruthiga Mone, Chandirasegaran Massilamany, Ninaad Lasrado, Channabasavaiah B. Gurumurthy, Raymond A. Sobel, Jay Reddy

Jay Reddy Publications

Myocarditis is one of the major causes of heart failure in children and young adults and can lead to dilated cardiomyopathy. Lymphocytic myocarditis could result from autoreactive CD4+ and CD8+ T cells, but defining antigen specificity in disease pathogenesis is challenging. To address this issue, we generated T cell receptor (TCR) transgenic (Tg) C57BL/6J mice specific to cardiac myosin heavy chain (Myhc)-α 334–352 and found that Myhc-α-specific TCRs were expressed in both CD4⁺ and CD8⁺ T cells. To investigate if the phenotype is more pronounced in a myocarditis-susceptible genetic background, we backcrossed with A/J mice. At the fourth …

Emerging Roles Of Cullin-Ring Ubiquitin Ligases In Cardiac Development, Josue Zambrano-Carrasco, Jianqiu Zou, Wenjuan Wang, Xinghui Sun, Jie Li, Huabo Su

Department of Biochemistry: Faculty Publications

Heart development is a spatiotemporally regulated process that extends from the embryonic phase to postnatal stages. Disruption of this highly orchestrated process can lead to congenital heart disease or predispose the heart to cardiomyopathy or heart failure. Consequently, gaining an in-depth understanding of the molecular mechanisms governing cardiac development holds considerable promise for the development of innovative therapies for various cardiac ailments. While significant progress in uncovering novel transcriptional and epigenetic regulators of heart development has been made, the exploration of post-translational mechanisms that influence this process has lagged. Culling-RING E3 ubiquitin ligases (CRLs), the largest family of ubiquitin ligases, …

Multivalent Epigraph Hemagglutinin Vaccine Protects Against Influenza B Virus In Mice, Erika M. Petro-Turnquist, Brigette Corder Kampfe, Amber Gadeken, Matthew J. Pekarek, Eric A. Weaver

Nebraska Center for Virology: Faculty Publications

Influenza B virus is a respiratory pathogen that contributes to seasonal epidemics, accounts for approximately 25% of global influenza infections, and can induce severe disease in young children. While vaccination is the most commonly used method of preventing influenza infections, current vaccines only induce strain-specific responses and have suboptimal efficacy when mismatched from circulating strains. Further, two influenza B virus lineages have been described, B/Yamagatalike and B/Victoria-like, and the limited cross-reactivity between the two lineages provides an additional barrier in developing a universal influenza B virus vaccine. Here, we report a novel multivalent vaccine using computationally designed Epigraph hemagglutinin proteins …

Characterization Of Variant Rnas Encapsidated During Bromovirus Infection By High-Throughput Sequencing, Sarah Dexheimer, Nipin Shrestha, Bandana Sharma Chapagain, Jozef J. Bujarski, Yanbin Yin

Food for Health: Publications

Previously, we described the RNA recombinants accumulating in tissues infected with the bromoviruses BMV (Brome mosaic virus) and CCMV (Cowpea chlorotic mottle virus). In this work, we characterize the recombinants encapsidated inside the purified virion particles of BMV and CCMV. By using a tool called the Viral Recombination Mapper (ViReMa) that detects recombination junctions, we analyzed a high number of high-throughput sequencing (HTS) short RNA sequence reads. Over 28% of BMV or CCMV RNA reads did not perfectly map to the viral genomes. ViReMa identified 1.40% and 1.83% of these unmapped reads as the RNA recombinants, respectively, in BMV and …

Impacts Of Farrowing Pen Design, Season, And Sow Parity On Litter Performance And Piglet Mortality, Verônica Madeira Pacheco, Tami M. Brown-Bandl, Gary A. Rohrer, Rafael Vieira De Sousa, Luciane Silva Martello

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Piglet mortality during lactation is a significant concern in swine production, influenced by complex interactions involving sow, piglet, environmental, and management factors. While crushing by the sow may be the ultimate cause of piglet mortality, there are many factors influencing the outcome, including parity, thermal stress, and animal housing systems. New farrowing systems are continuously being developed; however, it is difficult for producers to make decisions without any scientific basis. This study aimed to assess the impact of different farrowing pen layouts on piglet performance, considering parity and season. A total of 546 sows and 9123 piglets were monitored across …

Program Requirements For Beef Cattle Certified As Usda Organic, Carsten Loseke, Elliott James Dennis

Cornhusker Economics

This document provides an overview of the use and production of the USDA Certified Organic program for the beef cattle industry, with an emphasis on the state of Nebraska. We detail what cattle qualify, feed requirements, medical and health standards of cattle, and premiums paid by consumers for USDA certified organic products. All information is taken from the Organic Foods Production Act Provisions available in the Federal Register.

Gene Editing Of Pigs To Control Influenza A Virus Infections, Taeyong Kwon, Bianca L. Artiaga, Chester D. Mcdowell, Kristin M. Whitworth, Kevin D. Wells, Randall S. Prather, Gustavo Delhon, Mark Cigan, Stephen N. White, Jamie Retallick, Natasha N. Gaudreault, Igor Morozov, Juergen A. Richt

School of Veterinary and Biomedical Sciences: Faculty Publications

Proteolytic activation of the hemagglutinin (HA) glycoprotein by host cellular proteases is pivotal for influenza A virus (IAV) infectivity. Highly pathogenic avian influenza viruses possess the multibasic cleavage site of the HA which is cleaved by ubiquitous proteases, such as furin; in contrast, the monobasic HA motif is recognized and activated by trypsin-like proteases, such as the transmembrane serine protease 2 (TMPRSS2). Here, we aimed to determine the effects of TMPRSS2 on the replication of pandemic H1N1 and H3N2 subtype IAVs in the natural host, the pig. The use of the CRISPR/Cas 9 system led to the establishment of homozygous …

Effect Of Dietary Phytase On Water And Fecal Prokaryotic And Eukaryotic Microbiomes In A Hybrid Tilapia (Oreochromis Aureus X O. Niloticus) Mixotrophic Biofloc Production System, Candis L. Ray, Jason Abernathy, Bartholomew Green, Adam Rivers, Kevin Schrader, Steven Rawles, Matthew Mcentire, Miles Lange, Carl Webster

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

In this study we evaluated feed and temporal effects on prokaryotic (16S) and eukaryotic (18S) microbiome dynamics in an outdoor mixotrophic biofloc system used to grow hybrid tilapia (Oreochromis aureus x O. niloticus) to market size. The dicalcium phosphate -free practical feed treated with 6-phytase (3000 FTU/kg; P-Free+ Phytase) and positive (Control) and negative (P-Free) control practical feeds used were formulated to contain 27.7% digestible protein and 4% lipid. Sex reversed, all-male hybrid tilapia (28.9 g/fish) were stocked (29 fish/m³) in 9 outdoor rectangular tanks (16.6 m³) and grown for 154 days. The …

Opportunities And Challenges Of Generative Ai In Construction Industry: Focusing On Adoption Of Text-Based Models, Prashnna Ghimire, Kyungki Kim, Manoj Acharya

Durham School of Architectural Engineering and Construction: Faculty Publications

In the last decade, despite rapid advancements in artificial intelligence (AI) transforming many industry practices, construction largely lags in adoption. Recently, the emergence and rapid adoption of advanced large language models (LLMs) like OpenAI’s GPT, Google’s PaLM, and Meta’s Llama have shown great potential and sparked considerable global interest. However, the current surge lacks a study investigating the opportunities and challenges of implementing Generative AI (GenAI) in the construction sector, creating a critical knowledge gap for researchers and practitioners. This underlines the necessity to explore the prospects and complexities of GenAI integration. Bridging this gap is fundamental to optimizing GenAI’s …

Trade-Offs In Rooting Strategy Dimensions Along An Edaphic Gradient In A Grassland Ecosystem, Yuguo Yang, Sabrina E. Russo

School of Biological Sciences: Faculty Publications

1. Roots are essential to the diversity and functioning of plant communities, but trade-offs in rooting strategies are still poorly understood.
2. We evaluated existing frameworks of rooting strategy trade-offs and tested their underlying assumptions, guided by the hypothesis that community-level rooting strategies are best described by a combination of variation in organ-level traits, plant-level root:shoot allocation and symbiosis-level mycorrhizal dependency. We tested this hypothesis using data on plant community structure, above-and below-ground biomass, eight root traits including mycorrhizal colonisation and soil properties from an edaphic gradient driven by elevation and water availability in sandhills prairie, Nebraska, USA.
3. We found multidimensional trade-offs …

Engineering Neurotoxin-Functionalized Exosomes For Targeted Delivery To The Peripheral Nervous System, Mena Asha Krishnan, Olawale A. Alimi, Tianshu Pan, Mitchell Kuss, Zeljka Korade, Guoku Hu, Bo Liu, Bin Duan

Department of Mechanical and Materials Engineering: Faculty Publications

The administration of therapeutics to peripheral nerve tissue is challenging due to the complexities of peripheral neuroanatomy and the limitations imposed by the blood–nerve barrier (BNB). Therefore, there is a pressing need to enhance delivery effectiveness and implement targeted delivery methods. Recently, erythrocyte-derived exosomes (Exos) have gained widespread attention as biocompatible vehicles for therapeutics in clinical applications. However, engineering targeted Exos for the peripheral nervous system (PNS) is still challenging. This study aims to develop a targeted Exo delivery system specifically designed for presynaptic terminals of peripheral nerve tissue. The clostridium neurotoxin, tetanus toxin-C fragment (TTC), was tethered to the …

Twenty-Eight Years Of Gm Food And Feed Without Harm: Why Not Accept Them?, Richard E. Goodman

Department of Food Science and Technology: Faculty Publications

Since the first genetically engineered or modified crops or organisms (GMO) were approved for commercial production in 1995, no new GMO has been proven to be a hazard or cause harm to human consumers. These modifications have improved crop efficiency, reduced losses to insect pests, reduced losses to viral and microbial plant pathogens and improved drought tolerance. A few have focused on nutritional improvements producing beta carotene in Golden Rice. Regulators in the United States and countries signing the CODEX Alimentarius and Cartagena Biosafety agreements have evaluated human and animal food safety considering potential risks of allergenicity, toxicity, nutritional and …

Twenty-Eight Years Of Gm Food And Feed Without Harm: Why Not Accept Them?, Richard E. Goodman

Department of Food Science and Technology: Faculty Publications

Since the first genetically engineered or modified crops or organisms (GMO) were approved for commercial production in 1995, no new GMO has been proven to be a hazard or cause harm to human consumers. These modifications have improved crop efficiency, reduced losses to insect pests, reduced losses to viral and microbial plant pathogens and improved drought tolerance. A few have focused on nutritional improvements producing beta carotene in Golden Rice. Regulators in the United States and countries signing the CODEX Alimentarius and Cartagena Biosafety agreements have evaluated human and animal food safety considering potential risks of allergenicity, toxicity, nutritional and …

Yap Mechanotransduction Under Cyclic Mechanical Stretch Loading For Mesenchymal Stem Cell Osteogenesis Is Regulated By Rock, Eunju Kim, Brandon D. Riehl, Tasneem Bouzid, Ruiguo Yang, Bin Duan, Henry J. Donahue, Jung Yul Lim

Department of Mechanical and Materials Engineering: Faculty Publications

While yes-associated protein (YAP) is now recognized as a potent mechanosensitive transcriptional regulator to affect cell growth and differentiation including the osteogenic transcription of mesenchymal stem cells (MSCs), most studies have reported the YAP mechanosensing of static mechanophysical cues such as substrate stiffness. We tested MSC response to dynamic loading, i.e., cyclic mechanical stretching, and assessed YAP mechanosensing and resultant MSC osteogenesis. We showed that cyclic stretching at 10% strain and 1 Hz frequency triggered YAP nuclear import in MSCs. YAP phosphorylation at S127 and S397, which is required for YAP cytoplasmic retention, was suppressed by cyclic stretch. We also …

Antibiotic-Induced Gut Dysbiosis Elicits Gut-Brain Axis Relevant Multi-Omic Signatures And Behavioral And Neuroendocrine Changes In A Nonhuman Primate Model, Shivdeep S. Hayer, Mackenzie Conrin, Jeffrey French, Andrew K. Benson, Sophie Alvarez, Kathryn Dempsey, Anne Fischer, Zahraa Wajih Alsafwani, William Gasper, Mallory J. Suhr Van Haute, Haley R. Hassenstab, Shayda Azadmanesh, Missy Briardy, Skyler Gerbers, Aliyah Jabenis, Jennifer L. Thompson, Jonathan B. Clayton

Food for Health: Publications

Emerging evidence indicates that antibiotic-induced dysbiosis can play an etiological role in the pathogenesis of neuropsychiatric disorders. However, most of this evidence comes from rodent models. The objective of this study was to evaluate if antibiotic-induced gut dysbiosis can elicit changes in gut metabolites and behavior indicative of gut-brain axis disruption in common marmosets (Callithrix jacchus) – a nonhuman primate model often used to study sociability and stress. We were able to successfully induce dysbiosis in marmosets using a custom antibiotic cocktail (vancomycin, enrofloxacin and neomycin) administered orally for 28 days. This gut dysbiosis altered gut metabolite profiles, …

Developing And Sustaining A Graphic Scholarship Collection For Academic Libraries, Stewart Brower, Toni Hoberecht, Zane Ratcliffe, Bethie Seay

SANE journal: Sequential Art Narrative in Education

In early 2021, the Schusterman Library at the University of Oklahoma-Tulsa satellite campus took a new step towards building a culture of interest by creating the Graphic Scholarship Collection. This new endeavor is a curated collection of graphic novels, primarily non-fiction, aligned with the academic programs on campus, as well as promoting University initiatives in diversity, equity, and inclusion. A new organizational structure for the collection materials and their circulation metrics will be examined in detail. There will also be consideration of the challenges of selection and acquisition by a mixed team of selectors, some of whom have no experience …

Illustrating Thoughts & Feelings: Student-Produced Political Cartoons About Israel, Matt Reingold

SANE journal: Sequential Art Narrative in Education

This paper presents the findings of a qualitative study about the inclusion of arts-based assessment strategies in a 12th grade Israel education classroom. Students were tasked with producing a political cartoon that demonstrated their understandings of contemporary Israeli society. Data was collected from interviews and students' original artwork. The findings revealed that learning through the arts provided students with opportunities to think about and express their feelings about Israel in aesthetically complex and personal ways. The findings also demonstrated the importance of pre-assessment strategies like frequent exposure to the genre of political cartoons and conferencing before submission.

Vibroscape Analysis Reveals Acoustic Niche Overlap And Plastic Alteration Of Vibratory Courtship Signals In Ground-Dwelling Wolf Spiders, Noori Choi, Pat Miller, Eileen A. Hebets

School of Biological Sciences: Faculty Publications

To expand the scope of soundscape ecology to encompass substrate-borne vibrations (i.e. vibroscapes), we analyzed the vibroscape of a deciduous forest floor using contact microphone arrays followed by automated processing of large audio datasets. We then focused on vibratory signaling of ground-dwelling Schizocosa wolf spiders to test for (i) acoustic niche partitioning and (ii) plastic behavioral responses that might reduce the risk of signal interference from substrate-borne noise and conspecific/heterospecific signaling. Two closely related species - S. stridulans and S. uetzi - showed high acoustic niche overlap across space, time, and dominant frequency. Both species show plastic behavioral …

Soil Carbon And Nitrogen After Eight Years Of Rotational Grazing In The Nebraska Sandhills Meadows, Gandura O. Abagandura, Martha Mamo, W. H. Schacht, Aaron Shropshire, Jerry Volesky

Department of Agronomy and Horticulture: Faculty Publications

Grassland provides many ecosystem services; therefore, sustainable management practices of grassland are crucial for maintaining and enhancing its ecosystem health and resilience. Rotational grazing at a high stocking density (a.k.a., ultrahigh stocking density) is purported to sequester greater amounts of carbon (C) in grassland soils than rotational grazing at low stocking densities. This study was conducted in the Nebraska Sandhills meadows for eight years to evaluate how rotational grazing with different stocking densities can affect soil C and total nitrogen (TN) in bulk soils, soil organic matter fractions, and sequestration rate. The grazing management included a high stocking density with …