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Articles 1 - 30 of 58
Full-Text Articles in Entire DC Network
Septotemporal Variation In Theta Rhythm Dynamics: Effects Of Speed And Habituation, James Hinman
Septotemporal Variation In Theta Rhythm Dynamics: Effects Of Speed And Habituation, James Hinman
Master's Theses
Theta (6-12 Hz) field potentials and the synchronization (coherence) of these potentials present neural network indices of hippocampal physiology. Theta signals within the hippocampal formation may reflect alterations in sensorimotor integration, the flow of sensory input and/or distinct cognitive operations. While the power and coherence of theta signals vary across lamina within the septal hippocampus, limited information is available about variation in these indices across the septotemporal (long) or areal axis. The present study examined the relationship of locomotor speed to theta indices at CA1 and DG sites across the septotemporal axis as well as in the entorhinal cortex. Our …
Design Of A Tetracycline Operon Inducible System For The Control Of Vaccinia Virus Replication: Implications For Vaccine Development, Caitlin J. Hagen
Design Of A Tetracycline Operon Inducible System For The Control Of Vaccinia Virus Replication: Implications For Vaccine Development, Caitlin J. Hagen
Master's Theses
The use of vaccinia virus (VACV) as a vaccine resulted in the eradication of smallpox in 1979. Characteristics that contribute to the effectiveness of VACV as a vaccine and viral vector include its ability to elicit strong, long-lived humoral and cell-mediated immune responses as a live-replicating virus and to accept large inserts of DNA into its genome. However, adverse events associated with its use as the smallpox vaccine have constrained it from being more widely utilized in vaccines and therapies. We propose to improve the safety of VACV as a live-replicating vector by using elements of the tet operon to …
An Assessment Of Moose (Alces Alces Americana) And Moose Management In Connecticut, Andrew M. Labonte
An Assessment Of Moose (Alces Alces Americana) And Moose Management In Connecticut, Andrew M. Labonte
Master's Theses
Eastern moose (Alces alces americana) populations have been increasing in New England over the past decade. Moose populations have the potential to generate human conflict due to their size, speed, nocturnal behavior, and seasonal mobility. As problems associated with increasing moose populations become more common, the need to develop management strategies that are both effective and acceptable to stakeholders becomes increasingly important. The potential for moose to continue to expand in southern New England and the long-term impacts they may have on Connecticut residents, is unclear. The overall purpose of this study was to assess how suitable Connecticut …
Psychometric Evaluation Of The Timeline Followback For Exercise Among Young Adults, Gregory A. Panza
Psychometric Evaluation Of The Timeline Followback For Exercise Among Young Adults, Gregory A. Panza
Master's Theses
Objectives: Two separate studies assessed psychometric properties of a retrospective behavioral measure adapted for exercise called the Timeline Followback for Exercise (TLFB-E). Study one examined criterion, convergent, and predictive validity. Study two examined test-retest reliability. Methods: Study one participants (N = 66) were college students 20.0 ± 1.4yr. Validity of frequency, intensity, time, and type of exercise as assessed on the TLFB-E was examined using Pearson r correlations with accelerometers, weekly exercise contracts between participants and researchers, College Alumni Questionnaire, and a health-related physical fitness battery. Study two participants were a separate sample (N = 40) of college …
Effects Of 4-Hydroxy-2-Nonenal On Mutant Sperm Whale Myoglobins, Nantawat Tatiyaborworntham
Effects Of 4-Hydroxy-2-Nonenal On Mutant Sperm Whale Myoglobins, Nantawat Tatiyaborworntham
Master's Theses
No abstract provided.
Sex Differences In Mechanisms And Outcome Of Neonatal Hypoxia-Ischemia In Rodent Models: Implications For Sex-Specific Neuroprotection In Clinical Neonatal Practice, Courtney A. Hill, Roslyn Holly Fitch
Sex Differences In Mechanisms And Outcome Of Neonatal Hypoxia-Ischemia In Rodent Models: Implications For Sex-Specific Neuroprotection In Clinical Neonatal Practice, Courtney A. Hill, Roslyn Holly Fitch
Open Access Author Fund Awardees' Articles
Clinical findings show that male infants with hypoxic-ischemic injury (HI) fare more poorly than matched females on cognitive outcomes. Rodent models of neonatal hypoxia-ischemia support this difference, with data showing that perinatal brain injury leads to long-term behavioral deficits primarily in male rodents and in female rodents treated with early androgens. Results support the idea that sex-specific gonadal hormones may modulate developmental response to injury and dovetail with overwhelming evidence of developmental androgen effects on typical brain morphology and behavior. However, mechanisms underlying sex differences in response to early brain injury may be more complicated. Specifically, activation of cell death …
Prevalence And Prognostic Role Of Triple-Negative Breast Cancer By Race: A Surveillance Study, Helen Swede, David I. Gregorio, Susan H. Tannenbaum, Jessica A. Brockmeyer, Lori L. Wilson, Mellisa A. Pensa, Richard G. Stevens, Carolyn D. Runowicz
Prevalence And Prognostic Role Of Triple-Negative Breast Cancer By Race: A Surveillance Study, Helen Swede, David I. Gregorio, Susan H. Tannenbaum, Jessica A. Brockmeyer, Lori L. Wilson, Mellisa A. Pensa, Richard G. Stevens, Carolyn D. Runowicz
UCHC Articles - Research
A possible explanation for the relatively poor survival from breast cancer among blacks is the much higher rate of the adverse Triple-Negative sub-type. In a study of 1372 patients, blacks had twice the risk of death compared to whites among those with advanced cancer whether or not tumors were Triple-Negative. More research is still warranted to determine why blacks with advanced, but not local, breast cancer have a consistently higher rate of death.
Introduction
Emerging research suggests a substantially greater prevalence of the adverse triple-negative (TN) subtype (human epidermal growth factor receptor [HER]2−, estrogen receptor [ER]−, …
The Efficacy Of Antibiotic Residue Screening Tests For The Detection Of Natural Antimicrobials In Milk, Stacey L. O'Donnell
The Efficacy Of Antibiotic Residue Screening Tests For The Detection Of Natural Antimicrobials In Milk, Stacey L. O'Donnell
Master's Theses
No abstract provided.
The Branched Actin Nucleator Arp2/3 Promotes Nuclear Migrations And Cell Polarity In The C. Elegans Zygote, William A. Mohler
The Branched Actin Nucleator Arp2/3 Promotes Nuclear Migrations And Cell Polarity In The C. Elegans Zygote, William A. Mohler
UCHC Articles - Research
Regulated movements of the nucleus are essential during zygote formation, cell migrations, and differentiation of neurons. The nucleus moves along microtubules (MTs) and is repositioned on F-actin at the cellular cortex. Two families of nuclear envelope proteins, SUN and KASH, link the nucleus to the actin and MT cytoskeletons during nuclear movements. However, the role of actin nucleators in nuclear migration and positioning is poorly understood. We show that the branched actin nucleator, Arp2/3, affects nuclear movements throughout embryonic and larval development in C. elegans, including nuclear migrations in epidermal cells and neuronal precursors. In one-cell embryos the migration …
Division Of Labor Between Subsets Of Lymph Node Dendritic Cells Determines The Specificity Of The Cd8 Recall Response To Influenza Infection, Jenny E. Suárez-Ramírez, Tao Wu, Young-Tae Lee, Carolina C. Aguila, Keith R. Bouchard, Linda Linda Cauley
Division Of Labor Between Subsets Of Lymph Node Dendritic Cells Determines The Specificity Of The Cd8 Recall Response To Influenza Infection, Jenny E. Suárez-Ramírez, Tao Wu, Young-Tae Lee, Carolina C. Aguila, Keith R. Bouchard, Linda Linda Cauley
UCHC Articles - Research
Cytotoxic T lymphocytes are important targets for vaccines against a wide variety of infections that enter the body via mucosal tissues. To induce effective immunity these vaccines must include the most protective epitopes and elicit rapid recall responses at the site of infection. Although live attenuated viruses are sometimes used to induce cellular immunity against recurrent influenza infections, the mechanisms that determine the magnitude of the response to individual viral components are very poorly defined. Heterosubtypic infections in B6 mice illustrate an additional level of complexity, when the antigen-specificity of the response shifts dramatically between primary and secondary challenge. This …
Aronia Mitschurinii: Solving A Horticultural Enigma, Peter J. Leonard
Aronia Mitschurinii: Solving A Horticultural Enigma, Peter J. Leonard
Master's Theses
Aronia (Medik.), commonly known as chokeberry, is a taxonomically misunderstood genus currently experiencing a renaissance in North America as both an ornamental and fruit crop. Three species of chokeberry are commonly accepted as native in North America: A. arbutifolia (L.) Pers. red chokeberry; A. melanocarpa (Michx.) Elliot, black chokeberry; and A. prunifolia (Marshall) Rehder, or purple chokeberry. In Europe a fourth species of human origin is recognized as Aronia mitschurinii (A.K.Skvortsov & Maitul.), or cultivated, black-fruited Aronia. It is widely speculated that this genotype originated in the early 20th century with Russian pomologist Ivan Michurin, as the product …
Automation Of Orthodontic Wire Tester For Performing Three Point Bending Tests, Adithya Venkatesan
Automation Of Orthodontic Wire Tester For Performing Three Point Bending Tests, Adithya Venkatesan
Master's Theses
Abstract
Understanding the biomechanical factors in orthodontics is important in order to improve the overall effectiveness of actual clinical treatment. An accurate method to study the threedimensional (3D) force systems and the resulting movements of teeth during orthodontic treatment is needed along with the understanding of the material properties of any orthodontic wire. Until recently, most of the orthodontic biomechanics literature was limited to twodimensional experimental studies. Recent advances in threedimensional computer modeling have also been developed but have been limited to the manual control of tooth movement. Overall, there is very little published evidence in the literature on the …
Effect Of Prostaglandin E2 On Mechanical Stresses Applied By Mc3t3-E1 Osteoblast-Like Cells On A Soft Hydrogel Substrate, Abhijit Deb Roy
Effect Of Prostaglandin E2 On Mechanical Stresses Applied By Mc3t3-E1 Osteoblast-Like Cells On A Soft Hydrogel Substrate, Abhijit Deb Roy
Master's Theses
Osteoblasts are sensitive to mechanical stimuli and release Prostaglandin E2 (PGE2) when exposed to a fluid shear stress. The exact mechanism by which these cells sense mechanical stress is not well established. A study of the stresses applied by the osteoblasts, under the influence of PGE2, on a hydrogel provided information regarding intercellular-communication via changes in the substrate surface pattern.
A digital image correlation program was developed using the Levenberg-Marquardt optimization algorithm to analyze images and compare the deformations between pairs of images. Comparisons of images before and after the addition of PE2 to the media showed differences in the …
The Influence Of Resistance Training On Primary Hemostatic Responses, Brent C. Creighton
The Influence Of Resistance Training On Primary Hemostatic Responses, Brent C. Creighton
Master's Theses
Objective: The rise in casualties of acute cardio vascular disease has increased the investigation of potential ways to combat these problems. Long term resistance training has been viewed as one possible approach in helping to reduce the hyperaggragability of platelets following acute strenuous exercise. The present investigation was designed to explore the effects of an acute resistance exercise test (AERET) and recovery on the primary hemostatic system in both resistance trained and untrained individuals.Methods: Ten resistance trained (RT) (Age, 26.0 ± 1.42 yr; Height, 175.12 ± 2.7 cm; Weight, 79.56 ± 4.29 kg) and ten untrained individuals UT (Age, …
The Expression Of T-Box (Tbx3) In The Bovine Mammary Gland, Maria L. Procopio Ms.
The Expression Of T-Box (Tbx3) In The Bovine Mammary Gland, Maria L. Procopio Ms.
Master's Theses
Development of the bovine mammary gland is a complex process that is regulated by several hormones, growth factors and transcription factors including but not limited to growth hormone (GH), insulin-like growth factor (IGF)-I and T-box (Tbx)2 and 3. Tbx2 and Tbx3 are transcription factors required for mammary gland development in humans and known to regulate cell cycle. In addition, there is recent evidence that GH increases expression of Tbx3 in osteoblasts independent of IGF-I. Based on these findings, we hypothesized GH and IGF-I will increase Tbx2 and Tbx3 expression in bovine mammary epithelial cells (MEC), the cell responsible for milk …
The Health Status, Concerns, And Reform In Uruguay With An Emphasis On Health Promotion Programs Geared Towards The Care And Development Of The Country's Children And Adolescents, Melissa Raquel Ramírez
The Health Status, Concerns, And Reform In Uruguay With An Emphasis On Health Promotion Programs Geared Towards The Care And Development Of The Country's Children And Adolescents, Melissa Raquel Ramírez
Honors Scholar Theses
This study was conducted in Montevideo, Uruguay, where I examined the actions that the country and society as a whole, its various communities, the Uruguayan government, and the people take in order to prevent disease and promote a healthy society. An ethnographic experiential and evidence-based approach, including personal experience, interviews, and official government documents, was used to fully describe the way the system operates. Due to Uruguay's demographic characteristics, particular attention was paid to children and adolescents. For this thesis, Uruguay is described in terms of its history, physical and mental health issues, society's shared health concerns, and its vulnerable …
T Cells Expanded In Presence Of Il-15 Exhibit Increased Antioxidant Capacity And Innate Effector Molecules, Nitya G. Chakraborty, Bijay Mukherji
T Cells Expanded In Presence Of Il-15 Exhibit Increased Antioxidant Capacity And Innate Effector Molecules, Nitya G. Chakraborty, Bijay Mukherji
UCHC Articles - Research
Persistence of effector cytotoxic T lymphocytes (CTLs) during an immunological response is critical for successfully controlling a viral infection or tumor growth. Various cytokines are known to play an important part in regulating the immune response. The IL-2 family of cytokines that includes IL-2 and IL-15 are known to function as growth and survival factors for antigen-experienced T cells. IL-2 and IL-15 possess similar properties, including the ability to induce T cell proliferation. Whereas long term IL-2 exposure has been shown to promote apoptosis and limit CD8+ memory T cell survival and proliferation, it is widely believed that IL-15 …
Loss Of Dna Mismatch Repair Imparts A Selective Advantage In Planarian Adult Stem Cells, Jessica P. Hollenbach, Alissa M. Resch, Dasaradhi Palakodeti, Brenton R. Graveley, Christopher D. Heinen
Loss Of Dna Mismatch Repair Imparts A Selective Advantage In Planarian Adult Stem Cells, Jessica P. Hollenbach, Alissa M. Resch, Dasaradhi Palakodeti, Brenton R. Graveley, Christopher D. Heinen
UCHC Articles - Research
Lynch syndrome (LS) leads to an increased risk of early-onset colorectal and other types of cancer and is caused by germline mutations in DNA mismatch repair (MMR) genes. Loss of MMR function results in a mutator phenotype that likely underlies its role in tumorigenesis. However, loss of MMR also results in the elimination of a DNA damage-induced checkpoint/apoptosis activation barrier that may allow damaged cells to grow unchecked. A fundamental question is whether loss of MMR provides pre-cancerous stem cells an immediate selective advantage in addition to establishing a mutator phenotype. To test this hypothesis in an in vivo system, …
Investigation Of Mirnas Expression In A Citron-Kinase Mutant Model Of Microcephaly, Shan Parikh
Investigation Of Mirnas Expression In A Citron-Kinase Mutant Model Of Microcephaly, Shan Parikh
Master's Theses
Mutation of Citron-Kinase (Cit-K) in rodents causes substantial reductions in the number of neurons generated in the CNS and results in a primary microcephaly-like phenotype. Evidence from drosophila genetics has further established a genetic link between Cit-K and a protein Argonaut 1 (AGO1), which is required for proper functioning of the miRNA machinery (2). Experiments characterizing the role of miRNAs in the developing cortex demonstrate the requirement of miRNAs for differentiation of neural progenitor cells starting at embryonic day 12.5 (3). Together, this evidence links the role of miRNAs to neurogenesis and thus this relationship warrants further investigation. Here miRNA …
The Regulation Of Liv-1 Mrna In Mda-Mb-231 Human Breast Cancer Cells And Its Association With E-Cadherin (Cdh1), Leelyn Chong
The Regulation Of Liv-1 Mrna In Mda-Mb-231 Human Breast Cancer Cells And Its Association With E-Cadherin (Cdh1), Leelyn Chong
Master's Theses
LIV-1, the estrogen-regulated gene encoding a member of the ZIP family of zinc transporters (SLC39A6), has been implicated in both growth and metastasis of estrogen-receptor (ER) positive (+) and negative (-) breast cancer cells. In ER+ breast cancer cells, LIV-1 expression is induced by both estrogen and insulin. In embryonic cells, LIV-1 has also been negatively associated with the expression of the cell adhesion protein, E-cadherin (CDH1), thought to play a role in metastasis. In the present study, we investigated the regulation of LIV-1 and its relationship to CDH1 in MDA-MB-231 ER- breast cancer cells. Cells were …
Compost Tea And Milk To Suppress Powdery Mildew (Podosphaera Xanthii) On Pumpkins And Evaluation Of Horticultural Pots Made From Recyclable Fibers Under Field Conditions, Matthew Debacco
Master's Theses
Powdery mildew (caused by Podosphaera xanthii) a common problem for vegetable growers, and the cost of controlling the disease with fungicides to the growers and the environment is high. An alternative approach for control using methods approved for organic production are sprays based on teas made from compost, both actively aerated (ACT) and non-aerated (NCT) compost teas, and sprays made from diluted milk. We evaluated these sprays for control of powdery mildew on pumpkins in field trials in Connecticut in 2008 and 2009, and in greenhouse trials in 2009. We also evaluated the compost teas and milk in the greenhouse …
Mekk3 Regulates Ifn-Γ Production In T Cells Through The Rac1/2-Dependent Mapk Cascades, Xiaofang Wang
Mekk3 Regulates Ifn-Γ Production In T Cells Through The Rac1/2-Dependent Mapk Cascades, Xiaofang Wang
UCHC Articles - Research
MEKK3 is a conserved Ser/Thr protein kinase belonging to the MAPK kinase kinase (MAP3K) family. MEKK3 is constitutively expressed in T cells, but its function in T cell immunity has not been fully elucidated. Using Mekk3 T cell conditional knockout (T-cKO) mice, we show that MEKK3 is required for T cell immunity in vivo. Mekk3 T-cKO mice had reduced T cell response to bacterial infection and were defective in clearing bacterial infections. The Ag-induced cytokine production, especially IFN-γ production, was impaired in Mekk3-deficient CD4 T cells. The TCR-induced ERK1/2, JNK, and p38 MAPKs activation was also defective in Mekk3 …
Characterization Of Arginine-82 Mutants With Non-Native Chromophores, Vivek Alaigh
Characterization Of Arginine-82 Mutants With Non-Native Chromophores, Vivek Alaigh
Honors Scholar Theses
Bacteriorhodopsin, found in most halobacteria, is an integral protein that contains seven transmembrane alpha helices and an organic chromophore, all-trans retinal. Light energy is captured by the protein and results in a series of spectrally discrete intermediates that conclude with a proton being pumped across the membrane from the cytoplasmic side to the extracellular milieu. The most blue-shifted photo-intermediate, the M state, has been of interest for protein-based holographic memory storage devices. Bacteriorhodopsin mutants were prepared with either a 4-hydroxy retinal or 3,4-dihydro retinal analog: R82A, R82C, R82H, R82K, R82N and R82Q. The objective of this research was to investigate …
Quorum Sensing In Archaea, Charles Mackin
Quorum Sensing In Archaea, Charles Mackin
Honors Scholar Theses
Bacteria coordinate cell density dependent behaviors by communicating through chemical intermediaries in a process called quorum sensing. In a bacterial culture, individual cells will constitutively produce signal molecules, termed autoinducers, and export them into the environment. When the concentration of autoinducers reaches a threshold, the cells sense that they are in a specific situation, which requires the upregulation of certain genes. This upregulation causes the bacteria to produce proteins that allow them to take part in a coordinated population-wide behavior.
In bacteria that are naturally competent, or capable of importing DNA from the environment, the expression of competence genes is …
Contribution Of Dietary Supplements To The Nutritional Status Of College Students, Caroline Yu
Contribution Of Dietary Supplements To The Nutritional Status Of College Students, Caroline Yu
Honors Scholar Theses
Little is known about the prevalence of dietary supplement usage among college students. Though taking dietary supplements can cover nutrient shortages not achieved through diet alone, it is often recommended to improve the quality of one's diet rather than rely on supplements. The main objective of this research study was to determine the prevalence of dietary supplement use among college students in relation to a variety of demographic and lifestyle variables, and to find out what portion of total nutrient intake is supplied by supplements. Subjects were all recruited from the University of Connecticut, and each participant completed a health …
Modeling Human Immune Response To The Lyme Disease-Causing Bacteria, Yevhen Rutovytskyy
Modeling Human Immune Response To The Lyme Disease-Causing Bacteria, Yevhen Rutovytskyy
Honors Scholar Theses
The purpose of this project is to develop and analyze a mathematical model for the pathogen-host interaction that occurs during early Lyme disease.
Based on the known biophysics of motility of Borrelia burgdorferi and a simple model for the immune response, a PDE model was created which tracks the time evolution of the concentrations of bacteria and activated immune cells in the dermis. We assume that a tick bite inoculates a highly localized population of bacteria into the dermis. These bacteria can multiply and migrate. The diffusive nature of the migration is assumed and modeled using the heat equation. Bacteria …
Expression Of The Porcine Reproductive And Respiratory Syndrome Virus Non-Structural Protein 3 (Nsp 3) In Escherichia Coli, Lidia Beka
Honors Scholar Theses
Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) is single-stranded, positive-sense RNA virus in the family Arteriviridae, order Nidovirales. PRRSV is the most economically significant viral infection of swine herds in the United States. The single-stranded RNA genome is 15 kb in length and encodes 9 open reading frames (ORF1a, ORF1b, ORF2a, ORF2b and ORFs 3 through 7). ORFs 1a and 1b encode for 13 non-structural proteins (nsp) that are suggested to be involved in transcription and viral genome replication. The exact role of non-structural proteins in PRRSV cycle is still unknown. Moreover, there is a limited availability of reagents such …
Characterization Of Differentiation Of Bovine Mammary Epithelial Cells, Amanda C. Lopez
Characterization Of Differentiation Of Bovine Mammary Epithelial Cells, Amanda C. Lopez
Honors Scholar Theses
In American society, dairy products are vital for nutrition and the economy. Optimizing the process of producing milk can benefit the consumers, producers, and the animals involved. Understanding the mechanisms of the development of the mammary gland can increase the efficiency of milk production, as well as improve animal health.
Mammary epithelial cells (MEC) are the functional unit of the mammary gland. Although, there is a well-established MEC cell line, known as MAC-T, the use of a primary cell line is preferred because it more closely mimics an in vivo model. To better understand how mammary cell differentiation is regulated, …
Design And Bio-Production Of A Nanoparticle Avian Influenza Vaccine, Kashif N. Ather
Design And Bio-Production Of A Nanoparticle Avian Influenza Vaccine, Kashif N. Ather
Honors Scholar Theses
Influenza is one of the most common diseases in the world and the cause for numerous deaths every year. The primary method of combating the disease is the influenza vaccine, which is produced by inoculating chicken eggs with inactivated virus. An emerging solution is to use Self-Assembling Polypeptide Nanoparticles (SAPN) to elicit an immune response in the body, rather than using inactivated viruses. This project focuses on the synthesis, purification, and refolding of two peptide constructs, BN5C and S43, which are specific protein sequences that under the right conditions will refold into the 3-dimensional structures necessary for producing an immune …
Finding A Link Between The Hormones Of The Somatotropic Axis And Growth Rate Of Juvenile Steller Sea Lions, Katherine Denise Hebert
Finding A Link Between The Hormones Of The Somatotropic Axis And Growth Rate Of Juvenile Steller Sea Lions, Katherine Denise Hebert
Honors Scholar Theses
The decline of the Western population (144 degrees west longitude) of Steller sea lions is hypothesized to be the result of impaired nutritional status and decline of growth rate, especially in juveniles and subsequent natality. Because changes in components of the somatotropic axis can be predictive of nutritional status and growth rate in this species, 2 groups of free-ranging juvenile Steller sea lions were captured in Prince William Sound, AK. Group 1 (n = 30) was initially captured at 5 mo and recaptured at 10 mo of age, whereas group 2 (n = 9) was captured at 7 and 8 …