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Articles 31 - 60 of 109
Full-Text Articles in Life Sciences
A Method To Measure The Partitioning Coefficient Of Volatile Organic Compounds In Nanoparticles, Guiying Rao, Jeonghyeon Ahn, Abigail Evans, Michelle Casey, Eric P. Vejerano
A Method To Measure The Partitioning Coefficient Of Volatile Organic Compounds In Nanoparticles, Guiying Rao, Jeonghyeon Ahn, Abigail Evans, Michelle Casey, Eric P. Vejerano
Faculty Publications
The partitioning behavior of volatile organic compounds (VOCs) into nanoparticles is less studied compared to those of semivolatile organic compounds (SVOCs) because of the lower concentration of the VOCs that is expected to partition into particles. One challenge in measuring the accurate partition coefficient of VOCs is quantifying their low mass fraction that sorbed on nanoparticles and differentiating them from the high VOC concentrations present in the gas-phase. Systematically characterizing the partitioning coefficient at a specific environmental condition is also difficult when sampling in the field. During field sampling, thermal and non-thermal issues such as sampling artifacts and non-equilibrium conditions …
Foliar Application Of Low Concentrations Of Titanium Dioxide And Zinc Oxide Nanoparticles To The Common Sunflower Under Field Conditions, Marek Kolenčík, Dávid Ernst, Martin Urík, Ľuba Ďurišová, Marek Bujdoš, Martin Šebesta, Edmund Dobročka, Samuel Kšiňan, Ramakanth Illa, Qian Yu, Huan Feng, Ivan Černý, Veronika Holišová, Gabriela Kratošová
Foliar Application Of Low Concentrations Of Titanium Dioxide And Zinc Oxide Nanoparticles To The Common Sunflower Under Field Conditions, Marek Kolenčík, Dávid Ernst, Martin Urík, Ľuba Ďurišová, Marek Bujdoš, Martin Šebesta, Edmund Dobročka, Samuel Kšiňan, Ramakanth Illa, Qian Yu, Huan Feng, Ivan Černý, Veronika Holišová, Gabriela Kratošová
Department of Earth and Environmental Studies Faculty Scholarship and Creative Works
Nano-fertilisers have only recently been introduced to intensify plant production, and there still remains inadequate scientific knowledge on their plant-related effects. This paper therefore compares the effects of two nano-fertilisers on common sunflower production under field conditions. The benefits arising from the foliar application of micronutrient-based zinc oxide fertiliser were compared with those from the titanium dioxide plant-growth enhancer. Both the zinc oxide (ZnO) and titanium dioxide (TiO2) were delivered by foliar application in nano-size at a concentration of 2.6 mg·L−1. The foliar-applied nanoparticles (NPs) had good crystallinity and a mean size distribution under 30 nm. …
Thiamine Deficiency Causes Long-Lasting Neurobehavioral Deficits In Mice, Hui Li, Hong Xu, Wen Wen, Liying Wu, Mei Xu, Jia Luo
Thiamine Deficiency Causes Long-Lasting Neurobehavioral Deficits In Mice, Hui Li, Hong Xu, Wen Wen, Liying Wu, Mei Xu, Jia Luo
Pharmacology and Nutritional Sciences Faculty Publications
Thiamine deficiency (TD) has detrimental effects on brain health and neurobehavioral development, and it is associated with many aging-related neurological disorders. To facilitate TD-related neuropsychological studies, we generated a TD mouse model by feeding a thiamine-deficient diet for 30 days, followed by re-feeding the control diet for either one week or 16 weeks as recovery treatment. We then performed neurobehavioral tests in these two cohorts: cohort of one week post TD treatment (1 wk-PTDT) and 16 weeks post TD treatment (16 wks-PTDT). The TD mice showed no significant difference from control in any tests in the 1 wk-PTDT cohort at …
Tlr Antagonism By Sparstolonin B Alters Microbial Signature And Modulates Gastrointestinal And Neuronal Inflammation In Gulf War Illness Preclinical Model, Dipro Bose, Ayan Mondal, Punnag Saha, Diana Kimono, Sutapa Sarkar, Ratanesh K. Seth, Patricia Janulewicz, Kimberly Sullivan, Ronnie Horner, Nancy Klimas, Mitzi Nagarkatti, Prakash Nagarkatti, Saurabh Chatterjee
Tlr Antagonism By Sparstolonin B Alters Microbial Signature And Modulates Gastrointestinal And Neuronal Inflammation In Gulf War Illness Preclinical Model, Dipro Bose, Ayan Mondal, Punnag Saha, Diana Kimono, Sutapa Sarkar, Ratanesh K. Seth, Patricia Janulewicz, Kimberly Sullivan, Ronnie Horner, Nancy Klimas, Mitzi Nagarkatti, Prakash Nagarkatti, Saurabh Chatterjee
Faculty Publications
The 1991 Persian Gulf War veterans presented a myriad of symptoms that ranged from chronic pain, fatigue, gastrointestinal disturbances, and cognitive deficits. Currently, no therapeutic regimen exists to treat the plethora of chronic symptoms though newer pharmacological targets such as microbiome have been identified recently. Toll-like receptor 4 (TLR4) antagonism in systemic inflammatory diseases have been tried before with limited success, but strategies with broad-spectrum TLR4 antagonists and their ability to modulate the host-microbiome have been elusive. Using a mouse model of Gulf War Illness, we show that a nutraceutical, derived from a Chinese herb Sparstolonin B (SsnB) presented a …
Statement Of World Aquatic Scientific Societies On The Need To Take Urgent Action Against Human-Caused Climate Change, Based On Scientific Evidence [Dear Colleague Letter], Scott A. Bonar, Brian R. Murphy, Leanne H. Roulson, Jesse T. Trushenski, Douglas J. Austen, Michael Edward Douglas
Statement Of World Aquatic Scientific Societies On The Need To Take Urgent Action Against Human-Caused Climate Change, Based On Scientific Evidence [Dear Colleague Letter], Scott A. Bonar, Brian R. Murphy, Leanne H. Roulson, Jesse T. Trushenski, Douglas J. Austen, Michael Edward Douglas
United States Fish and Wildlife: Staff Publications
Dear Colleague Letter from the American Fisheries Society to fellow scientific societies, July 25, 2020, about the urgent need for responsive collective action to mitigate impending radical climate change. Includes the Statement of World Aquatic Scientific Societies on the Need to Take Urgent Action Against Human-Caused Climate Change, Based on Scientific Evidence, emphasizing the importance of aquatic ecosystems. Includes extensive citations and notes.
"Water is the most important natural resource on Earth as it is vital for life. Aquatic ecosystems, freshwater or marine, provide multiple benefits to human society, such as provisioning of oxygen, food, drinking water, genetic resources; regulation …
Effect Of Botulinum Toxin Injection On Asymmetric Lower Face And Chin Deviation, Dongwook Kim, Ju-Hyun Park, Vittorio Favero, James Mah, Young-Soo Jung, Seong Taek Kim
Effect Of Botulinum Toxin Injection On Asymmetric Lower Face And Chin Deviation, Dongwook Kim, Ju-Hyun Park, Vittorio Favero, James Mah, Young-Soo Jung, Seong Taek Kim
Dental Medicine Faculty Publications
The purpose of this study was to compare the efficacy of botulinum toxin (BoNT) in masseter muscle reduction depending on the amount of chin deviation. Exploring distinctive effects of BoNT relative to the characteristics of facial asymmetry will aid in planning and predicting treatment outcomes. Sixteen adult volunteers were classified into two groups according to the degree of menton deviation observed in posteroanterior cephalograms. Eight had a menton deviation of 3 mm or more and the other eight had less than 3 mm. A total of 25 Units of BoNT was injected into the unilateral masseter muscle of the prominent …
Lipocalin 2 Induces Neuroinflammation And Blood-Brain Barrier Dysfunction Through Liver-Brain Axis In Murine Model Of Nonalcoholic Steatohepatitis, Ayan Mondal, Dipro Bose, Punnag Saha, Sutapa Sarkar, Ratanesh K. Seth, Diana Kimono, Muayad Albadrani, Mitzi Nagarkatti, Prakash Nagarkatti, Saurabh Chatterjee
Lipocalin 2 Induces Neuroinflammation And Blood-Brain Barrier Dysfunction Through Liver-Brain Axis In Murine Model Of Nonalcoholic Steatohepatitis, Ayan Mondal, Dipro Bose, Punnag Saha, Sutapa Sarkar, Ratanesh K. Seth, Diana Kimono, Muayad Albadrani, Mitzi Nagarkatti, Prakash Nagarkatti, Saurabh Chatterjee
Faculty Publications
BACKGROUND:
Recent clinical and basic research implicated a strong correlation between NAFLD/NASH phenotypes with ectopic manifestations including neuroinflammation and neurodegeneration, but the mediators and critical pathways involved are not well understood. Lipocalin 2 (Lcn2) is one of the important mediators exclusively produced in the liver and circulation during NASH pathology.
METHODS:
Using murine model of NASH, we studied the role of Lcn2 as a potent mediator of neuroinflammation and neurodegeneration in NASH pathology via the liver-brain axis. RESULTS: Results showed that high circulatory Lcn2 activated 24p3R (Lipocalin2 receptor) in the brain and induced the release of high mobility group box …
A Letter To Reconsider The Conditions For Testing Decontaminated N95 Respirators For Emergency Reuse To Address Shortage, Eric P. Vejerano, Jeonghyeon Ahn
A Letter To Reconsider The Conditions For Testing Decontaminated N95 Respirators For Emergency Reuse To Address Shortage, Eric P. Vejerano, Jeonghyeon Ahn
Faculty Publications
The battle with COVID-19 pandemic has resulted in the shortage of personal protective equipment, particularly, N95 respirators. Healthcare workers who reused N95 respirators may resort to unproven methods of cleaning/sterilization that can severely compromise the respirators’ filtration efficiency. A recently issued guideline will test decontaminated N95 respirators against particles with a median diameter of 0.075 ± 0.020 µm at a flow rate of 85 L min–1. For emergency reuse, these conditions may be too stringent. N95 respirators tested at this flow rate had predicted efficiencies of < 69%, assuming complete degradation of their electrostatic coating. Experimental efficiencies were ~15% lower. For emergency reuse, we recommend to either adjust the flow rate closer to normal breathing, or the size of the test particle should reflect that of virus-laden respiratory aerosols (~> 0.5 µm). By reconsidering the test conditions, a substantial fraction of used/decontaminated respirators can …
An Assessment Of Disinfection-Related Water Chemistry At Public Pools And Spas In Louisville, Kentucky, Thomas Gerding, Tim Wilder, Jason W. Marion
An Assessment Of Disinfection-Related Water Chemistry At Public Pools And Spas In Louisville, Kentucky, Thomas Gerding, Tim Wilder, Jason W. Marion
EKU Faculty and Staff Scholarship
The growth in the number of pools to more than 7.4 million in the U.S. has been accompanied by a rise in recreational water illnesses (RWIs). Effective pool management, though, can mitigate RWI risks. Inadequate management presumably occurs more frequently where training is less formalized and/or pool operation is a minor aspect of the job of the responsible pool manager(s). During summer 2018, weekly evaluations were performed at public venues in Louisville, Kentucky. Disinfectant levels and other items were monitored and compared with venue-specific (pool or spa) criteria. Among 1,312 venue surveys, 1,173 (89.4%) met criteria and 139 (10.6%) did …
Medicine And Media: The Ranitidine Debate., Jennifer A. Wagner, Jennifer Colombo
Medicine And Media: The Ranitidine Debate., Jennifer A. Wagner, Jennifer Colombo
Manuscripts, Articles, Book Chapters and Other Papers
Ranitidine has been the topic of recent media reports. Current findings, confirmed by the US Food and Drug Administration, indicate that some ranitidine products contain a substance that may be carcinogenic. Providers and patients require additional information on the risks of continuing therapy vs. the benefits of the medication. This article comments on what is currently known about the evolving situation of elevated N-nitrosodimethylamine levels in ranitidine and the limits of the existing information to assess best practices.
Toxin Transcripts In Crotalus Atrox Venom And In Silico Structures Of Toxins, Ying Jia, Ivan Lopez, Paulina Kowalski
Toxin Transcripts In Crotalus Atrox Venom And In Silico Structures Of Toxins, Ying Jia, Ivan Lopez, Paulina Kowalski
Biology Faculty Publications and Presentations
The western diamondback rattlesnake (Crotalus atrox) is a common and widespread North American pit viper species, and its venom possesses medical applications. In this research, we identified 14 of the most common transcripts encoding 11 major venom toxins including transcripts for a three-finger toxin (3FTx) from the crude venom of C. atrox. In silico three-dimensional (3D) structures of 9 venom toxins were predicted by using deduced toxin amino acid sequences and a computer programme-MODELLER. The accuracy of all predicted toxin structures was evaluated by five stereochemical structure parameters including discrete optimised protein energy (DOPE) score, root mean square deviation (RMSD), …
Single-Use Plastics And Covid-19: Scientific Evidence And Environmental Regulations, Robert C. Hale, Bk Song
Single-Use Plastics And Covid-19: Scientific Evidence And Environmental Regulations, Robert C. Hale, Bk Song
VIMS Articles
Waste plastics are a serious and growing environmental problem. Less than 10% of plastics are recycled, with most discarded in landfills, incinerated, or simply abandoned.1 Single-use plastics constitute about half of plastic waste. While most plastics are used and initially disposed of on land, much eventually enters aquatic ecosystems.2 Wildlife mortalities result from encounters (e.g., ingestion and entanglement) with large debris, including plastic bags. Such bags are excluded from many recycling programs, as they can entangle machinery. Most plastics do not readily biodegrade in the environment. However, they can be embrittled by UV exposure and fragment into microplastics (mm) and …
Toxic Structures: Speculation And Lead Exposure In Detroit's Single-Family Rental Market, Alexa Eisenberg, Eric Seymour, Alex B. Hill, Joshua Akers
Toxic Structures: Speculation And Lead Exposure In Detroit's Single-Family Rental Market, Alexa Eisenberg, Eric Seymour, Alex B. Hill, Joshua Akers
Urban Studies and Planning Faculty Research Publications
Foreclosure sales permitted investors to purchase large volumes of low-cost residential properties after the last financial crisis, reshaping patterns of property ownership in low-income housing markets across the US. This study links post-foreclosure property acquisitions by investor-landlords to subsequent lead poisoning cases among children under age six living in Detroit, Michigan. We find that the odds of exhibiting elevated blood lead levels (≥ 5 μg/dL) are higher for children living in investor-owned homes purchased through tax foreclosure sale. These findings highlight the potential for property speculation in post-foreclosure housing markets to exacerbate severe and racialized burdens of excess lead toxicity …
Plant-Derived Natural Biomolecule Picein Attenuates Menadione Induced Oxidative Stress On Neuroblastoma Cell Mitochondria, Kavindra Kumar Kesari, Anupam Dhasmana, Shruti Shandilya, Neeraj Prabhakar, Ahmed Shaukat, Jinze Dou, Jessica M. Rosenholm, Tapani Vuorinen, Janne Ruokolainen
Plant-Derived Natural Biomolecule Picein Attenuates Menadione Induced Oxidative Stress On Neuroblastoma Cell Mitochondria, Kavindra Kumar Kesari, Anupam Dhasmana, Shruti Shandilya, Neeraj Prabhakar, Ahmed Shaukat, Jinze Dou, Jessica M. Rosenholm, Tapani Vuorinen, Janne Ruokolainen
School of Medicine Publications and Presentations
Several bioactive compounds are in use for the treatment of neurodegenerative disorders, such as Alzheimer’s and Parkinson’s disease. Historically, willow (salix sp.) bark has been an important source of salisylic acid and other natural compounds with anti-inflammatory, antipyretic and analgesic properties. Among these, picein isolated from hot water extract of willow bark, has been found to act as a natural secondary metabolite antioxidant. The aim of this study was to investigate the unrevealed pharmacological action of picein. In silico studies were utilized to direct the investigation towards the neuroprotection abilities of picein. Our in vitro studies demonstrate the neuroprotective properties …
Quercetin And Vitamin C: An Experimental, Synergistic Therapy For The Prevention And Treatment Of Sars-Cov-2 Related Disease (Covid-19), Ruben Manuel Luciano Colunga Biancatelli, Max Berrill, John D. Catravas, Paul Ellis Marik
Quercetin And Vitamin C: An Experimental, Synergistic Therapy For The Prevention And Treatment Of Sars-Cov-2 Related Disease (Covid-19), Ruben Manuel Luciano Colunga Biancatelli, Max Berrill, John D. Catravas, Paul Ellis Marik
Bioelectrics Publications
Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) represents an emergent global threat which is straining worldwide healthcare capacity. As of May 27th, the disease caused by SARS-CoV-2 (COVID-19) has resulted in more than 340,000 deaths worldwide, with 100,000 deaths in the US alone. It is imperative to study and develop pharmacological treatments suitable for the prevention and treatment of COVID-19. Ascorbic acid is a crucial vitamin necessary for the correct functioning of the immune system. It plays a role in stress response and has shown promising results when administered to the critically ill. Quercetin is a well-known flavonoid whose antiviral properties …
The Value Of Iaq: A Review Of The Scientific Evidence Supporting The Benefits Of Investing In Better Indoor Air Quality, Vickie R. Hawkins,, Cheryl L. Marcham, John P. Springston, J. David Miller, Geoffrey Braybrooke, Craig Maunder, Lydia Feng, Ben Kollmeyer
The Value Of Iaq: A Review Of The Scientific Evidence Supporting The Benefits Of Investing In Better Indoor Air Quality, Vickie R. Hawkins,, Cheryl L. Marcham, John P. Springston, J. David Miller, Geoffrey Braybrooke, Craig Maunder, Lydia Feng, Ben Kollmeyer
Publications
Other studies have examined how ventilation rates, combined with the presence of pollutant sources, can affect productivity. These studies provide evidence that increased ventilation, including increases above common guidance levels such as ASHRAE’s ventilation standards, improve occupant productivity. Increased occupant control over ventilation has also been shown to improve productivity. Higher indoor carbon dioxide (CO2) levels have been directly associated with impaired work performance and increased health symptoms. Historically, it was believed that these associations exist only because higher indoor CO2 concentrations, resulting from lower outdoor air ventilation rates, are also correlated with higher levels of other indoor-generated pollutants that …
Shuxuening Injection Facilitates Neurofunctional Recovery Via Down-Regulation Of G-Csf-Mediated Granulocyte Adhesion And Diapedesis Pathway In A Subacute Stroke Mouse Model, Zhixiong Li, Guangxu Xiao, Ming Lyu, Yule Wang, Shuang He, Hongxia Du, Xintong Wang, Benjamin Feng, Yan Zhu
Shuxuening Injection Facilitates Neurofunctional Recovery Via Down-Regulation Of G-Csf-Mediated Granulocyte Adhesion And Diapedesis Pathway In A Subacute Stroke Mouse Model, Zhixiong Li, Guangxu Xiao, Ming Lyu, Yule Wang, Shuang He, Hongxia Du, Xintong Wang, Benjamin Feng, Yan Zhu
Peer Reviewed Articles
Post-stroke neural damage is a serious health concern which does not yet have an effective treatment. We have shown previously that Shuxuening injection (SXNI), a Ginkgo biloba extract-based natural medicine, protects brain after an acute ischemic stroke, but its efficacy for post-stroke recovery is not known. This study was to investigate whether SXNI can improve the prognosis of stroke at a subacute phase. Mice with cerebral ischemia-reperfusion injury (CIRI) were established by middle cerebral artery occlusion (MCAO), and drugs or saline were injected by the tail vein every 12 h after reperfusion. The therapeutic effect of SXNI was evaluated by …
Long-Distance Phasing Of A Tentative "Enhancer" Single-Nucleotide Polymorphism With Yp2d6 Star Allele Definitions, Erin C. Boone, Wendy Y. Wang, R Gaedigk, Mariana Cherner, Anick Bérard, J Steven Leeder, Neil A. Miller, Andrea Gaedigk
Long-Distance Phasing Of A Tentative "Enhancer" Single-Nucleotide Polymorphism With Yp2d6 Star Allele Definitions, Erin C. Boone, Wendy Y. Wang, R Gaedigk, Mariana Cherner, Anick Bérard, J Steven Leeder, Neil A. Miller, Andrea Gaedigk
Manuscripts, Articles, Book Chapters and Other Papers
Background: The CYP2D6 gene locus has been extensively studied over decades, yet a portion of variability in CYP2D6 activity cannot be explained by known sequence variations within the gene, copy number variation, or structural rearrangements. It was proposed that rs5758550, located 116 kb downstream of the CYP2D6 gene locus, increases gene expression and thus contributes to variability in CYP2D6 activity. This finding has, however, not been validated. The purpose of the study was to address a major technological barrier, i.e., experimentally linking rs5758550, also referred to as the "enhancer" single-nucleotide polymorphism (SNP), to CYP2D6 haplotypes >100 kb away. To overcome …
Impact Of Slco1b1 Genetic Variation On Rosuvastatin Systemic Exposure In Pediatric Hypercholesterolemia., Jonathan B. Wagner, Susan M. Abdel-Rahman, Andrea Gaedigk, R Gaedigk, Geetha Raghuveer, Vincent S. Staggs, Leon Van Haandel, J Steven Leeder
Impact Of Slco1b1 Genetic Variation On Rosuvastatin Systemic Exposure In Pediatric Hypercholesterolemia., Jonathan B. Wagner, Susan M. Abdel-Rahman, Andrea Gaedigk, R Gaedigk, Geetha Raghuveer, Vincent S. Staggs, Leon Van Haandel, J Steven Leeder
Manuscripts, Articles, Book Chapters and Other Papers
This study investigated the impact of SLCO1B1 genotype on rosuvastatin systemic exposure in hypercholesterolemic children and adolescents. Participants (8-21 years) with at least one allelic variant of SLCO1B1 c.521T>C (521TC, n = 13; 521CC, n = 2) and wild type controls (521TT, n = 13) completed a single oral dose pharmacokinetic study. The variability contributed by SLCO1B1 c.521 sequence variation to rosuvastatin (RVA) systemic exposure among our pediatric cohort was comparable to previous studies in adults. RVA concentration-time curve from 0-24 hours (AUC
California Drought Projections Based On Climate Change Models’ Effects On Water Availability, Lauren Lynam
California Drought Projections Based On Climate Change Models’ Effects On Water Availability, Lauren Lynam
Student Scholar Symposium Abstracts and Posters
Future streamflow in California, as predicted by eight climate projections models, and their effects on water availability are discussed in this paper. The unimpaired projected streamflow for eleven California rivers, collected from Cal-Adapt Streamflow are compared with their unimpaired historical flows (1950-2015) using eight climate model projections (2020-2099) developed by Scripps Institution of Oceanography’s Routed Streamflow Projections; Warm Dry RCP 4.5, Average RCP 4.5, Cool Wet RCP 4.5, Other RCP 4.5, Warm Dry RCP 8.5, Average RCP 8.5, Cool Wet RCP 8.5, Other RCP 8.5. Projected drought quantities, durations, and intensities are statistically tested against historical values to determine significance …
Baclofen-Induced Changes In The Resting Brain Modulate Smoking Cue Reactivity: A Double-Blind Placebo-Controlled Functional Magnetic Resonance Imaging Study In Cigarette Smokers, Ariel Ketcherside, Kanchana Jagannathan, Sudipto Dolui, Nathan Hager, Nathaniel Spilka, Chaela Nutor, Hengyi Rao, Teresa Franklin, Reagan Wetherill
Baclofen-Induced Changes In The Resting Brain Modulate Smoking Cue Reactivity: A Double-Blind Placebo-Controlled Functional Magnetic Resonance Imaging Study In Cigarette Smokers, Ariel Ketcherside, Kanchana Jagannathan, Sudipto Dolui, Nathan Hager, Nathaniel Spilka, Chaela Nutor, Hengyi Rao, Teresa Franklin, Reagan Wetherill
Psychology Faculty Publications
Objective: Smoking cue-(SC) elicited craving can lead to relapse in SC-vulnerable individuals. Thus, identifying treatments that target SC-elicited craving is a top research priority. Reduced drug cue neural activity is associated with recovery and is marked by a profile of greater tonic (resting) activation in executive control regions, and increased connectivity between executive and salience regions. Evidence suggests the GABA-B agonist baclofen can reduce drug cue-elicited neural activity, potentially through its actions on the resting brain. Based on the literature, we hypothesize that baclofen’s effects in the resting brain can predict its effects during SC exposure.
Methods: In this longitudinal, …
Microrna Expression Profiling Of Normal And Malignant Human Colonic Stem Cells Identifies, Vignesh Viswanathan, Lynn Opdenaker, Shirin Modarai, Jeremy Z Fields, Gregory Gonye, Bruce M Boman
Microrna Expression Profiling Of Normal And Malignant Human Colonic Stem Cells Identifies, Vignesh Viswanathan, Lynn Opdenaker, Shirin Modarai, Jeremy Z Fields, Gregory Gonye, Bruce M Boman
Department of Pharmacology and Experimental Therapeutics Faculty Papers
MicroRNAs (miRNAs) have a critical role in regulating stem cells (SCs) during development, and because aberrant expression of miRNAs occurs in various cancers, our goal was to determine if dysregulation of miRNAs is involved in the SC origin of colorectal cancer (CRC). We previously reported that aldehyde dehydrogenase (ALDH) is a marker for normal and malignant human colonic SCs and tracks SC overpopulation during colon tumorigenesis. MicroRNA expression was studied in ALDH-positive SCs from normal and malignant human colon tissues by Nanostring miRNA profiling. Our findings show that: (1) A unique miRNA signature distinguishes ALDH-positive CRC cells from ALDH-positive normal …
Association Of Long-Term Consumption Of Repeatedly Heated Mix Vegetable Oils In Different Doses And Hepatic Toxicity Through Fat Accumulation, Gul Ambreen, Afshan Siddiq, Kashif Hussain
Association Of Long-Term Consumption Of Repeatedly Heated Mix Vegetable Oils In Different Doses And Hepatic Toxicity Through Fat Accumulation, Gul Ambreen, Afshan Siddiq, Kashif Hussain
Department of Biological & Biomedical Sciences
Background: Hepatic diseases are one of the chief reasons for worldwide morbidity and mortality. The increased incidence in Asian countries is driving researchers to explore preventive ways from nature. It is more practical to go with healthy routine edibles like vegetable oils to avoid environmental and chemical hepatic injuries. With the use of thermally oxidized oils overproduction of reactive oxygen species (ROS) with overwhelmed cellular antioxidants defense system results in oxidative stress, the known cause of cardiovascular diseases (CVDs), cancers and neurodegenerative disorders. Little is investigated about the effect of daily used oxidized cooking oils on hepatic function changes with …
Extreme Fire As A Management Tool To Combat Regime Shifts In The Range Of The Endangered American Burying Beetle, Alison K. Ludwig, Daniel R. Uden, Dirac Twidwell
Extreme Fire As A Management Tool To Combat Regime Shifts In The Range Of The Endangered American Burying Beetle, Alison K. Ludwig, Daniel R. Uden, Dirac Twidwell
Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research
This study is focused on the population of federally-endangered American burying beetles in south-central Nebraska. It is focused on changes in land cover over time and at several levels of spatial scale, and how management efforts are impacting both the beetle and a changing landscape. Our findings are applicable to a large portion of the Great Plains, which is undergoing the same shift from grassland to woodland, and to areas where the beetle is still found.
Assessing Field-Scale Risks Of Foliar Insecticide Applications To Monarch Butterfly (Danaus Plexippus) Larvae, Niranjana Krishnan, Yang Zhang, Keith G. Bidne, Richard L. Hellmich, Joel R. Coats, Steven P. Bradbury
Assessing Field-Scale Risks Of Foliar Insecticide Applications To Monarch Butterfly (Danaus Plexippus) Larvae, Niranjana Krishnan, Yang Zhang, Keith G. Bidne, Richard L. Hellmich, Joel R. Coats, Steven P. Bradbury
Biological Sciences Faculty Research & Creative Works
Establishment and maintenance of milkweed plants (Asclepias spp.) in agricultural landscapes of the north central United States are needed to reverse the decline of North America's eastern monarch butterfly (Danaus plexippus) population. Because of a lack of toxicity data, it is unclear how insecticide use may reduce monarch productivity when milkweed habitat is placed near maize and soybean fields. To assess the potential effects of foliar insecticides, acute cuticular and dietary toxicity of 5 representative active ingredients were determined: beta-cyfluthrin (pyrethroid), chlorantraniliprole (anthranilic diamide), chlorpyrifos (organophosphate), and imidacloprid and thiamethoxam (neonicotinoids). Cuticular median lethal dose values for …
Comparing Statistical Analyses To Estimate Thresholds In Ecotoxicology, Marcos Krull
Comparing Statistical Analyses To Estimate Thresholds In Ecotoxicology, Marcos Krull
VIMS Articles
Different methods are used in ecotoxicology to estimate thresholds in survival data. This paper uses Monte Carlo simulations to evaluate the accuracy of three methods (maximum likelihood (MLE) and Markov Chain Monte Carlo estimates (Bayesian) of the no-effect concentration (NEC) model and Piecewise regression) in estimating true and apparent thresholds in survival experiments with datasets having different slopes, background mortalities, and experimental designs. Datasets were generated with models that include a threshold parameter (NEC) or not (log-logistic). Accuracy was estimated using root-mean square errors (RMSEs), and RMSE ratios were used to estimate the relative improvement in accuracy by each design …
Toxicity Of Novel Platinum Compounds In Mammalian Cancer Cells, Vanesa Veletanlic
Toxicity Of Novel Platinum Compounds In Mammalian Cancer Cells, Vanesa Veletanlic
Masters Theses & Specialist Projects
There are currently three FDA platinum compounds approved for use as chemotherapeutics, where each drug has variable efficacies for different cancer types depending on cancer’s tissue of origin. The approved compounds are platinum(II) complexes with four coordination sites on the platinum atom allowing two types of ligands to attach: leaving ligands, which are removed from the platinum atom in solution, and non-leaving ligands, which remain complexed to the platinum. Carboplatin, the preferred compound used to treat ovarian and small-cell lung cancers, has a characteristic cyclobutanedicarboxylic acid leaving ligand and two ammonia non-leaving ligands. A novel compound, 1,1-cyclobutanedicarboxylato(ethylenediamine)platinum (II), or Pt(en)CBDCA, …
The Impact Of Nicotine Accumulation Exposure On Lithobates Catebeianus Larvae Mortality, Luke Micek
The Impact Of Nicotine Accumulation Exposure On Lithobates Catebeianus Larvae Mortality, Luke Micek
UCARE Research Products
Cigarette butts are the most littered item in the world and contain over 4,000 chemicals, including the organic compound nicotine (Slaughter et al. 2011). Billions of cigarette butts are littered each year which may wash into bodies of water, impacting the local wildlife. To determine how introduced chemicals impact the environment, it is important to study its effects on indicator species. Amphibians, such as Lithobates catebeianus, act as indicator species due to their extreme sensitivity to chemical changes in its environment. The purpose of this research project was to obtain data to help determine the impact nicotine accumulation has …
Development Of Inhalable Nano-Lipid Carriers For The Treatment Of Pulmonary Aspergillosis Using Hot Melt Extrusion Technology, Gauri Shadambikar
Development Of Inhalable Nano-Lipid Carriers For The Treatment Of Pulmonary Aspergillosis Using Hot Melt Extrusion Technology, Gauri Shadambikar
Graduate Student Council Research Grants
Overview: I am Gauri Shadambikar, second year PhD. student in department of Pharmaceutics and Drug Delivery. Pulmonary Aspergillosis is an infection caused by a type of mold and can have serious effects on patients with a weak immune system or with underlying lung disease1. Itraconazole, a triazole is a compound with a broad antifungal spectrum. 2. An inhalation-based drug delivery system has the advantage of rapid onset of action directly at the site of infection along with controlled and prolonged delivery. 3. Hence the aim of my project was to prepare inhalable nano-lipid carriers (NLC) which would be a viable …
Assessment Of Underlying Neurocircuitry In Dysregulation Of The Hypothalamic Pituitary Adrenal Stress Axis In Hiv-1 Tat Male Mice, Salahuddin Mohammed
Assessment Of Underlying Neurocircuitry In Dysregulation Of The Hypothalamic Pituitary Adrenal Stress Axis In Hiv-1 Tat Male Mice, Salahuddin Mohammed
Graduate Student Council Research Grants
Overview: My name is Salahuddin Mohammed, a 2nd year PhD graduate student from Dr. Jason Paris’ Lab. My research dissertation focuses on investigating the neuroendocrine underpinnings of HIV-and opioid-mediated anxiety-/depression-like behavior and cognitive impairment via experiments utilizing humans and animal models. Through this work I strive to delineate the underlying mechanism for the neuroHIV symptomology and develop novel therapeutic agents which can ameliorate HIV-1 mediated Tat-neurotoxicity. Approximately 50% of the HIV infected patients suffer from HIV associated neurocognitive disorders (HAND) which can be exacerbated by drug use/abuse. Some neuroHIV symptoms include anxiety, major depressive disorder, neurocognitive impairment, and additional psychiatric …