Other Medicine and Health Sciences Commons^™

Effect Of Injury Mechanism And Severity On The Molecular Pathophysiology Of Traumatic Brain Injury, Brandon Mcdonald

Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research

Traumatic brain injury (TBI) mechanism and severity are heterogenous clinically, resulting in a multitude of physical, cognitive, and behavioral deficits. However, approximately 80% suffer from milder injuries. Thus, examining pathophysiological changes associated with mild TBI is imperative for improving clinical translation and evaluating the efficacy of potential therapeutic strategies. Through this work, we developed models of TBI, ranging in both injury mechanism and severity, using an electromagnetic controlled cortical impact (CCI) device. First, we characterized and optimized a closed head, mild TBI model (DTBI) to determine the clinical translatability and practicality of producing repeated mild injuries. Interestingly, we determined that …

Culture And The Development Of Traditional Medicine In Africa, Rowland Edet, Oyedolapo Isaac Bello, Julianah Babajide

Department of Sociology: Faculty Publications

Traditional medicine has been the dominant healthcare system in Africa before westernization, civilization and colonialism. For people living in the rural areas, traditional medicine is easily available, accessible and affordable. The purpose of this paper is to examine how the cultural way of the life of Africans has contributed to the emergence and development of traditional therapeutic systems in the continent. By explaining the way Africans perceive illness and disease, this paper argues that various forms of healing were predicated on the sociocultural environment of the people. The paper therefore opts for concerted efforts in the development of traditional medicine …

Experimental Evaluation Of The Importance Of Colonization History In Early-Life Gut Microbiota Assembly, Inés Martínez, Maria X. Maldonado-Gomez, João Carlos Gomes-Neto, Hatem Kittana, Hua Ding, Robert J. Schmaltz, Payal Joglekar, Roberto Jiménez Cardona, Nathan L Marsteller, Steven W. Kembel, Andrew K. Benson, Daniel A. Peterson, Amanda Ramer-Tait, Jens C. Walter

Department of Food Science and Technology: Faculty Publications

The factors that govern assembly of the gut microbiota are insufficiently understood. Here, we test the hypothesis that inter-individual microbiota variation can arise solely from differences in the order and timing by which the gut is colonized early in life. Experiments in which mice were inoculated in sequence either with two complex seed communities or a cocktail of four bacterial strains and a seed community revealed that colonization order influenced both the outcome of community assembly and the ecological success of individual colonizers. Historical contingency and priority effects also occurred in Rag1^-/- mice, suggesting that the adaptive immune system …

A Gut Pathobiont Synergizes With The Microbiota To Instigate Inflammatory Disease Marked By Immunoreactivity Against Other Symbionts But Not Itself, João Carlos Gomes-Neto, Hatem Kittana, Sara Mantz, Rafael R. Segura Munoz, Robert J. Schmaltz, Laure B. Bindels, Jennifer L. Clarke, Jesse M. Hostetter, Andrew K. Benson, Jens Walter, Amanda Ramer-Tait

Department of Food Science and Technology: Faculty Publications

Inflammatory bowel diseases (IBD) are likely driven by aberrant immune responses directed against the resident microbiota. Although IBD is commonly associated with a dysbiotic microbiota enriched in putative pathobionts, the etiological agents of IBD remain unknown. Using a pathobiont-induced intestinal inflammation model and a defined bacterial community, we provide new insights into the immune-microbiota interactions during disease. In this model system, the pathobiont Helicobacter bilis instigates disease following sub-pathological dextran sulfate sodium treatment. We show that H. bilis causes mild inflammation in mono-associated mice, but severe disease in the presence of a microbiota, demonstrating synergy between the pathobiont and microbiota …

Enduring Chronic Kidney Disease: An Investigation Of Psychosocial Factors And Life Satisfaction In Older Adults Receiving Dialysis Treatment, Bailee Sobotka

Honors Program: Senior Projects (Public)

Chronic kidney disease is a condition during which the kidneys begin to shut down and no longer filter blood efficiently. Once the disease has progressed far enough, dialysis treatments are mandatory to sustain life. To further understand how older adults receiving dialysis treatments cope with their disease, psychosocial factors were evaluated to investigate possible correlations with life satisfaction using a Life Satisfaction Index Z (LSI-Z). Expected correlations with life satisfaction were sociability, financial satisfaction, importance of spirituality, and activities of daily living scores. Interviews were conducted with 30 dialysis patients and results were analyzed using various statistical measures. Significant correlations …

Lactose Intolerance: An Overview Of The Facts And Their Implications, Noelle M. Yeo

Honors Program: Senior Projects (Public)

Lactose intolerance is often blamed for the symptoms such as bloating, diarrhea, gas, abdominal pain, and nausea, that ail many people. Patients often do not seek proper diagnosis from a physician and create their own treatment plans, severely restricting lactose intake, without professional guidance. Even those who do seek the care of a physician find that diagnosis is complicated by less-than ideal testing and confusion due to the symptoms common to many other conditions. The misconceptions and inability to confirm a diagnosis of lactose intolerance can cause nutrient deficiencies in these patients, as well as begin a pattern of unnecessary …

Engaging Parents To Promote Children’S Nutrition And Health: Providers’ Barriers And Strategies In Head Start And Child Care Centers, Dipti A. Dev, Courtney Byrd-Williams, Samantha Ramsay, Brent A. Mcbride, Deepa Srivastava, Ashleigh L. Murriel, Chrisa Arcan, Anna M. Adachi-Mejia

Department of Child, Youth, and Family Studies: Faculty Publications

Purpose: Using the Academy of Nutrition and Dietetics benchmarks as a framework, this study examined childcare providers’ (Head Start [HS], Child and Adult Care Food Program [CACFP] funded, and non-CACFP) perspectives regarding communicating with parents about nutrition to promote children’s health.

Design: Qualitative.

Setting: State-licensed center-based childcare programs.

Participants: Full-time childcare providers (n ¼ 18) caring for children 2 to 5 years old from varying childcare contexts (HS, CACFP funded, and non-CACFP), race, education, and years of experience.

Methods: In-person interviews using semi-structured interview protocol until saturation were achieved. Thematic analysis was conducted.

Results: Two overarching themes were barriers and …

The 1939 Dickinson-Belskie Birth Series Sculptures: The Rise Of Modern Visions Of Pregnancy, The Roots Of Modern Pro-Life Imagery, And Dr. Dickinson’S Religious Case For Abortion, Rose Holz

Women's and Gender Studies Program: Faculty Publications

This multidisciplinary essay examines the hugely influential—yet surprisingly overlooked—Birth Series sculptures. Created in 1939 by Dr. Robert L. Dickinson (obstetrician-gynecologist and leader of the Planned Parenthood Federation of America) and sculptor Abram Belskie, they illustrate the process of human development from fertilization through delivery. First displayed at the 1939–1940 World’s Fair in New York City, they were reproduced in a variety of forms and sent out across the United States and overseas. Hardly a brief fad, their popularity persisted into the 1980s. This essay has four purposes. First, it tells the stories of Dickinson and Belskie to appreciate their contributions …

Encoding Of Saltatory Tactile Velocity In The Adult Orofacial Somatosensory System, Rebecca Custead

College of Education and Human Sciences: Dissertations, Theses, and Student Research

Processing dynamic tactile inputs is a key function of somatosensory systems. Spatial velocity encoding mechanisms by the nervous system are important for skilled movement production and may play a role in recovery of motor function following neurological insult. Little is known about tactile velocity encoding in trigeminal networks associated with mechanosensory inputs to the face, or the consequences of movement.

High resolution functional magnetic resonance imaging (fMRI) was used to investigate the neural substrates of velocity encoding in the human orofacial somatosensory system during unilateral saltatory pneumotactile inputs to perioral hairy skin in 20 healthy adults. A custom multichannel, scalable …

Effects Of Local Blood Flow On Muscle Stiffness, Megan E. White, Aaron J. Engel, Greg Bashford

UCARE: Research Products

Muscle injuries, in the form of strains or even tears, affect millions of people each year through undue tension on muscles during everyday activities, work tasks, or physical activity including sports or working out. These injuries can take from a few weeks to even months to heal, with patients having to deal with inflammation, swelling, and pain throughout the healing process. Scar tissue also forms when the muscle is injured, which regenerates throughout the healing process, but never fully recovers to its state prior to injury. This scar tissue is thought to make the muscle more prone to subsequent injury, …

The Relationship Between Physical Activity And Diet And Young Children's Cognitive Development: A Systematic Review, Pooja S. Tandon, Alison Tovar, Avanthi T. Jayasuriya, Emily Welker, Daniel J. Schober, Kristen Copeland, Dipti A. Dev, Ashleigh L. Murriel, Dima Amso, Dianne S. Ward

Department of Child, Youth, and Family Studies: Faculty Publications

Objective. Given the high prevalence of suboptimal nutrition and low activity levels in children, we systematically reviewed the literature on the relationship between physical activity and dietary patterns and cognitive development in early childhood (six months to five years).

Methods. In February 2016, we conducted two different searches of MEDLINE, PsycINFO, and ERIC. Each search included either physical activity (including gross motor skills) or diet terms, and neurocognitive development outcome terms. Included studies were in English, published since 2005, and of any study design in which the physical activity or diet measure occurred prior to age five.

Results. For physical …

The Differentiation And Protective Function Of Cytolytic Cd4 T Cells In Influenza Infection, Deborah M. Brown, Anna T. Lampe, Aspen M. Workman

School of Biological Sciences: Faculty Publications

CD4 T cells that recognize peptide antigen in the context of class II MHC can differentiate into various subsets that are characterized by their helper functions. However, increasing evidence indicates that CD4 cells with direct cytolytic activity (CD4 CTL) play a role in chronic as well as acute infections, such as influenza A virus (IAV) infection. In the last couple of decades, techniques to measure the frequency and activity of these cytolytic cells has demonstrated their abundance in infections, such as human immunodeficiency virus, mouse pox, murine gamma herpes virus, cytomegalovirus, Epstein–Barr virus, and influenza among others. We now appreciate …

Mechanisms By Which Dietary Ellagic Acid Attenuates Obesity And Obesity-Mediated Metabolic Complications, Inhae Kang

College of Education and Human Sciences: Dissertations, Theses, and Student Research

Ellagic acid (EA) is a polyphenol found in various fruits and plants, such as berries, pomegranates, muscadine grapes, nuts and bark of oak tree. EA has been known to exhibit anti-inflammatory and anti-proliferative effects in various types of cancer. However, little is known about the effects of EA on obesity. Herein, 1) the lipid-lowering role of EA was identified in primary human adipose stem cells (hASCs) and human hepatoma Huh7 cells; 2) the molecular mechanisms by which EA attenuates adipogenesis by epigenetic modification were identified; 3) the effects of EA on high fat and high sucrose-mediated obesity was …

Blast-Induced Mild Traumatic Brain Injury Through Ear Canal: A Finite Element Study, Praveen Akula, Yi Hua, Linxia Gu

Department of Mechanical and Materials Engineering: Faculty Publications

Purpose The role of ear canal in transmitting blast waves to the brain is not clear. The goal of this work is to characterize the influence of ear canal on blast-induced mild traumatic brain injury through a computational approach.

Methods A three-dimensional human head model with single-side ear canal details was reconstructed from computed tomography images. The ear canal was positioned either facing the incident blast wave or facing away from the blast wave.

Results The blast wave-head interaction has demonstrated that the overpressure within the ear canal was substantially amplified when the ear directly faced the blast wave. When …

Social Contexts Of Infant Feeding And Infant Feeding Decisions, Ellen J. Schafer, Natalie A. Williams, Siri Digney, Marion E. Hare, Sato Ashida

Department of Child, Youth, and Family Studies: Faculty Publications

Background: Infant feeding takes place within a network of social relationships. However, the social context in which infant feeding advice is received remains underresearched.

Objective: The objective of this study was to evaluate the social contexts of infant feeding by examining individual and relationship characteristics of mothers and network members associated with advice to exclusively breastfeed, exclusively formula feed, or use a combination of breast milk and formula.

Methods: Information about 287 network members was reported by 80 low-income mothers during a one-time survey. Characteristics of relationships associated with mothers receiving advice (exclusively breastfeed/formula feed, combination feed) from each network …

Analysis Of Drug Interactions With Lipoproteins By High Performance Affinity Chromatography, Matthew R. Sobansky

Department of Chemistry: Dissertations, Theses, and Student Research

High density lipoprotein (HDL), low density lipoprotein (LDL), and very low density lipoprotein (VLDL) are lipoproteins previously shown to bind many basic and neutral hydrophobic drugs in serum. These interactions impact the distribution, delivery, metabolism, and excretion of drugs and are important in determining drug activity, pharmacokinetics, and toxicity in the human body. Information about drug-lipoprotein interactions and the strength of these interactions can be useful in determining the distribution of drugs following administration.

The research presented in this dissertation uses high performance affinity chromatography (HPAC) and packed columns to study binding of the drug propranolol to immobilized lipoproteins such …

The Environmental And Health Costs Of Alternative Diets: A Comparative Study Of The U.S. Diet Relative To The French, Japanese, Mediterranean, And Nordic Diets, Sarah Rehkamp

Department of Agricultural Economics: Dissertations, Theses, and Student Research

This thesis contributes to the literature on sustainable consumption by using scenario analysis to evaluate the environmental and health costs of the U.S. diet relative to the French, Japanese, Mediterranean, and Nordic diets, identified in the literature as healthier diets. As a first step in estimating environmental costs, the energy efficiencies of each diet are calculated by decomposing each of the diets into their respective components. Then, the dietary efficiencies are translated into CO₂ emissions. As a first step in estimating health costs, a pooled cross-section time-series dataset is used to find the association between BMI and five countries, …

Perceived Impacts Of A Public Health Training Center Field Placement Program Among Trainees: Findings From A Small Group Externship Experience, Patrik Johansson, Brandon Grimm, Tarik Abdel-Monem, Stacey J. Hoffman, Mark Dekraai, Analisa Mcmillan

University of Nebraska Public Policy Center: Publications

There is heightened interest in identifying the impact of the federally funded Public Health Training Center (PHTC) program. Although evaluation studies have been conducted of public health training in general, evaluations of PHTC programs are rare. Field placement components are congressionally mandated requirements of PHTCs. Field placements are typically intensive, supervised externships for students to gain public health experience with local health departments or non-profit organizations. We have found no published evaluations of PHTC field placement components. This may be because of their small size and unique nature. We designed and evaluated a 200-h field placement program at an established …

Review Of Manon Parry, Broadcasting Birth Control: Mass Media And Family Planning, Rose Holz

Women's and Gender Studies Program: Faculty Publications

As Manon Parry explains in her interesting new book, ‘Many of the women who wrote [to the Birth Control Review] noted that they had read about [Margaret] Sanger’s work in the press, confirming the important role of the mass media in publicizing and building support for the movement’ (p. 13). Therein lies the crux of Parry’s project: the use of publicity was central to the family planning movement and a sustained analysis of its use over time is long overdue. To that end, she challenges several long-standing historiographic assumptions and unearths more than a few fascinating stories. For example, …

Head Impact Exposure In Male And Female Collegiate Ice Hockey Players, Bethany J. Wilcox, Jonathan G. Beckwith, Richard M. Greenwald, Jeffrey J. Chu, Thomas W. Mcallister, Laura A. Flashman, Arthur C. Maerlender, Ann-Christine Duhaime, Joseph J. Crisco

Department of Psychology: Faculty Publications

The purpose of this study was to quantify head impact exposure (frequency, location and magnitude of head impacts) for individual male and female collegiate ice hockey players and to investigate differences in exposure by sex, player position, session type, and team. Ninety-nine (41 male, 58 female) players were enrolled and 37,411 impacts were recorded over three seasons. Frequency of impacts varied significantly by sex (males: 287 per season, females: 170, p < 0.001) and helmet impact location (p < 0.001) but not by player position (p = 0.088). Head impact frequency also varied by session type; both male and female players sustained more impacts in games than in practices (p < 0.001), however the magnitude of impacts did not differ between session types. There was no difference in 95th percentile peak linear acceleration between sexes (males: 41.6 g, females: 40.8 g), but 95th percentile peak rotational acceleration and HITsp (a composite severity measure) were greater for males than females (4424, 3409 rad/s2, and 25.6, 22.3, respectively). Impacts to the back of the helmet resulted in the greatest 95th percentile peak linear accelerations for males (45.2 g) and females (50.4 g), while impacts to the side and back of the head were associated with the greatest 95th percentile peak rotational accelerations (males: 4719, 4256 rad/sec², females: 3567, 3784 rad/sec², respectively). It has been proposed that reducing an individual’s head impact exposure is a practical approach for reducing the risk of …

Using Quantitative Disease Dynamics As A Tool For Guiding Response To Avian Influenza In Poultry In The United States Of America, K. M. Pepin, E. Spackman, J. D. Brown, K. L. Pabilonia, Lindsey P. Garber, J. Todd Weaver, D. A. Kennedy, Kelly A. Patyk, K. P. Huyvaert, Ryan S. Miller, Alan B. Franklin, Kerri Pedersen, T. L. Bogich, P. Rohani, Susan A. Shriner, Colleen T. Webb, S. Riley

United States Department of Agriculture Wildlife Services: Staff Publications

Wild birds are the primary source of genetic diversity for influenza A viruses that eventually emerge in poultry and humans. Much progress has been made in the descriptive ecology of avian influenza viruses (AIVs), but contributions are less evident from quantitative studies (e.g., those including disease dynamic models). Transmission between host species, individuals and flocks has not been measured with sufficient accuracy to allow robust quantitative evaluation of alternate control protocols. We focused on the United States of America (USA) as a case study for determining the state of our quantitative knowledge of potential AIV emergence processes from wild hosts …

Grain Sorghum Whole Kernel Oil Lowers Plasma And Liver Cholesterol In Male Hamsters With Minimal Wax Involvement, Bo Hyun Lee, Thomas M. Carr, Curtis Weller, Susan L. Cuppett, Ismail M. Dweikat, Vicki Schlegel

Department of Food Science and Technology: Faculty Publications

The lipid fraction of the grain sorghum whole kernel (GS-WK) (i.e., phytosterol rich oil or policosanol rich wax) responsible for lowering cholesterol in hamsters fed the crude lipid (wax + oil) was determined. As expected, hamsters fed an atherogenic diet for a four week period presented with higher plasma non-HDL plasma and liver esterified cholesterol than those on the low fat diet. However, the atherogenic diet containing 5% (w/w) oil significantly lowered non-HDL plasma and liver cholesterol. Although the 5% wax supplement did not affect either plasma or liver cholesterol, excreted neutral sterol and bile acid were slightly higher than …

Student Perceptions Of Digital Textbooks In A College Nursing Program, Alan D. Eno

College of Journalism and Mass Communications: Theses

The purpose of this research was to study the use of digital textbooks in a small liberal arts college. The research was a mixed methods descriptive study using a pre and post survey to determine student perceptions of the technology. Findings indicated that students needed training in the installation and use of digital textbooks. Findings also indicated the need for further research into what students understand about using digital textbooks. Recommendations are for the college to institute training sessions to teach students how to use the digital textbooks.

Tgfβ3 Inhibits E-Cadherin Gene Expression In Palate Medial-Edge Epithelial Cells Through A Smad2-Smad4- Lef1 Transcription Complex, Ali Nawshad, Damian Medici, Chang-Chih Liu, Elizabeth D. Hay

College of Dentistry: Faculty Publications

Dissociation of medial-edge epithelium (MEE) during palate development is essential for mediating correct craniofacial morphogenesis. This phenomenon is initiated by TGFβ3 upon adherence of opposing palatal shelves, because loss of E-cadherin causes the MEE seam to break into small epithelial islands. To investigate the molecular mechanisms that cause this E-cadherin loss, we isolated and cultured murine embryonic primary MEE cells from adhered or non-adhered palates. Here, we provide the first evidence that lymphoid enhancer factor 1 (LEF1), when functionally activated by phosphorylated Smad2 (Smad2- P) and Smad4 (rather than β-catenin), binds with the promoter of the E-cadherin gene to repress …

Dental Hygiene Participation In Managing Incipient And Hidden Caries, Caren M. Barnes

College of Dentistry: Faculty Publications

The essence of dental hygiene practice includes the use of preventive and therapeutic methods for the promotion of good health and to prevent and control oral diseases. Dental hygienists actively promote the prevention of oral diseases through patient education that encourages self-care prevention of dental caries, supplemented by needs-related professional preventive services. Equally significant in the scope of dental hygiene practice are thorough oral examinations for disease detection. Although dental hygienists do not legally or definitively diagnose dental caries, they are responsible for detecting caries at all stages of the disease, recognizing caries risk factors, and planning management strategies. Because …

The Effects Of A Commercial Aluminum Airpolishing Powder On Dental Restorative Materials, William W. Johnson, Caren M. Barnes, David A. Covey, Mary P. Walker, Judith A. Ross

College of Dentistry: Faculty Publications

Introduction: JET-Fresh™ (Dentsply International, York, PA), a new airpolishing powder that contains aluminum trihydroxide as the abrasive agent, has been introduced for use with Prophy-Jet™ (Dentsply International).
Purpose: The aim of this study was to investigate the surface effects of aluminum trihydroxide airpolishing powder on a series of restorative materials.
Materials and Methods: A total of 6 Class V preparations with enamel margins were created on the buccal surface of extracted human molars. The preparations were restored with Type III gold, a high copper spherical alloy amalgam, porcelain, a lightactivated hybrid composite material, a light-activated microfilled composite material, and a …

The Formin-Homology-Domain-Containing Protein Fhod1 Enhances Cell Migration, Sreenivas Koka, Cheryl L. Neudauer, Xiaodong Li, Robert E. Lewis, James B. Mccarthy, Jennifer J. Westendorf

College of Dentistry: Faculty Publications

Formin-homology-domain-containing proteins interact with Rho-family GTPases and regulate actin cytoskeleton organization and gene transcription. FHOD1 is a member of this family, interacts with Rac1 and induces transcription from the serum response element. In this study, we examined the effects of FHOD1 expression on cytoskeletal organization and function in mammalian cells. FHOD1 proteins were stably expressed in WM35 melanoma cells and NIH-3T3 fibroblasts. Cells expressing full-length FHOD1 demonstrated an elongated phenotype compared with vector-transfected cells and cells expressing a truncated FHOD1 (1-421) that lacks the conserved FH1 and FH2 domains. Full-length FHOD1 co-localized with filamentous actin at cell peripheries. Cells transiently …

Selecting For Random Drug Testing At Union Pacific Railroad, Jennifer Meyer, Paul Savory

Department of Industrial and Management Systems Engineering: Faculty Publications

Many industries have recently implemented programs to detect and deter the use of recreational drugs in the workplace. The transportation industry has received careful government attention, particularly where the safety of the public may be seriously affected by employees who use drugs. Following federal guidelines, Union Pacific Railroad first implemented a random drug-testing plan in 1990. Because the assigned jobs, shifts, and work locations of many railroad employees change frequently, defining the selection population was particularly challenging. In its continuing efforts to validate and improve this plan, Union Pacific Railroad sought an external evaluation to determine the fairness of its …

Effects Of An Air-Powder Polishing System On Orthodontically Bracketed And Banded Teeth, Caren M. Barnes, Carl M. Russell, Laurence R. Gerbo, Bobby R. Wells, David Barnes

College of Dentistry: Faculty Publications

Since the introduction of air-powder polishing systems in 1977, air-powder polishing has been shown to be an efficient and effective method for removal of stain and plaque. Air-powder polishing systems use air, water, and sodium bicarbonate to deliver a controlled stream that propels specially processed sodium bicarbonate particles to the tooth surface. It has been demonstrated that this increasingly popular technique requires less time and less physical exertion by the operator than polishing with a rubber cup and prophylaxis paste. In addition, no heat is generated with this type of system.

Studies of the air-powder polishing method have examined its …

Field Technique For The Identification Of Deer Blood, David W. Oates, Carol A. Jochum, Kenneth A. Pearson, Cathy A. Hoilien

Nebraska Game and Parks Commission: Staff Research Publications

A latex suspension sensitized with deer antiserum has been prepared, placed on plastic cards, dried, and packaged for field use. The product was tested against bloodstains from 22 species (including Homo sapiens). Strong agglutination reactions occurred only with bloodstains from deer and elk.