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Articles 1 - 28 of 28
Full-Text Articles in Life Sciences
Hsv-1 Replication In Different Raw 264.7 And J774.1 Macrophage Phenotypes And Macrophage Viability Following Hsv-1 Infection, Yousef Nifaj Alanazi
Hsv-1 Replication In Different Raw 264.7 And J774.1 Macrophage Phenotypes And Macrophage Viability Following Hsv-1 Infection, Yousef Nifaj Alanazi
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HSV-1 is a ubiquitous virus capable of causing lifelong latent infection. The virus contains a large double strand DNA genome covered by an icosahedral capsid. HSV-1 is a cytolytic virus which can cause a lethal infection. The virus possesses critical protein ICP0 which is capable of interfering with host cell signaling and eventually prevent cell apoptosis. Innate immunity plays a crucial role in defense against HSV-1 infection and macrophage plays a significant role in the innate immune system. Macrophage cells can alter their behavior depending upon certain stimuli and tissue environments. Naive macrophage (M0) cells can be polarized to a …
The Impact Of Cytokines And Hsv-1 On Rab5 Protein Expression, F-Actin Cytoskeleton Rearrangement, And Cell Viability Of Uninfected And Virus-Infected M0, M1, And M2 Raw264.7 Murine Macrophages, Muhannad Falah Alruwaili
The Impact Of Cytokines And Hsv-1 On Rab5 Protein Expression, F-Actin Cytoskeleton Rearrangement, And Cell Viability Of Uninfected And Virus-Infected M0, M1, And M2 Raw264.7 Murine Macrophages, Muhannad Falah Alruwaili
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The endocytic pathway in all eukaryotic cells is necessary to maintain cellular functions, such as initiating transport of intracellular cargos and ingesting pathogens. The main regulator of this process is a member of small GTPase family, Rab5 protein. Rab5 protein plays a key role in the endocytic dynamic delivery of molecules, receptors, and pathogens from the cell membrane to cytoplasmic vesicles.as well as in the exocytic delivery of cellular products to the cell's exterior (Bonifacino & Glick, 2004). Many pathogens have exploited this protein to enter cells. Herpes Simplex Virus Type 1 (HSV-1) enters most cells by fusion or utilizes …
Mapping Hybrid Lethal Genes On The X Chromosome Of C. Briggsae, Blaine E. Bittorf
Mapping Hybrid Lethal Genes On The X Chromosome Of C. Briggsae, Blaine E. Bittorf
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In the cross of C. nigoni males to C. briggsae hermaphrodites, all F1 males arrest during embryogenesis. However in the reciprocal cross there are some viable F1 male progeny. This unidirectional male-specific lethality in the F1 hybrids has been attributed to a hybrid lethal gene in a 500 Kb region of the X chromosome of C. briggsae. Cbr-him-8 is a recessive maternal suppressor of the male-specific lethal phenotype, due to the requirement of the him-8 protein for proper X chromosome pairing. Without proper pairing of any one of the chromosomes in the Caenorhabditis genome, genes present on the unpaired chromosome …
Transcriptional Characterization Of Osteogenic And Adipogenic Differentiation Of Human Bone Marrow Derived Mesenchymal Stem Cells In 2d And 3d Peptide Hydrogel Culture System, R. M. Imtiaz Karim Rony
Transcriptional Characterization Of Osteogenic And Adipogenic Differentiation Of Human Bone Marrow Derived Mesenchymal Stem Cells In 2d And 3d Peptide Hydrogel Culture System, R. M. Imtiaz Karim Rony
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Mesenchymal stem cells (MSCs) are adult multipotent stem cell that can differentiate into mesodermal lineages such osteoblast, adipocytes, and chondrocytes, or can be transdifferentiated into clinically relevant lineages such as cardiac or neural cells using in vitro reprogramming techniques. In addition to the multilineage differentiation potential, MSCs from most tissue origins such bone marrow derived mesenchymal stem cells (BM-MSCs) or adipose derived mesenchymal stem cells (AD-MSCs) have immune modulatory functions which indicate their promise in clinical applications for cell-based therapy, tissue engineering, and regenerative medicine. In recent years, three-dimensional (3D) cell culture systems, which utilize 3D scaffolds or hydrogels to …
Lipin1 Regulates Skeletal Muscle Differentiation Through The Pkc/Hdac5/Mef2c:Myod -Mediated Pathway, Abdulrahman M. Jama
Lipin1 Regulates Skeletal Muscle Differentiation Through The Pkc/Hdac5/Mef2c:Myod -Mediated Pathway, Abdulrahman M. Jama
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Our previous characterization of global lipin1-deficient (fld) mice demonstrated that lipin1 played a novel role in skeletal muscle (SM) regeneration. The clinical relevance of lipin1 has been observed in patients with lipin1 null mutations where they exhibited severe rhabdomyolysis with aggregated and dysfunctional mitochondria. Lipin1 is a key gene that plays an important role in lipid biosynthesis and metabolism. It has dual functions as it contains a phosphatase activity that converts phosphatidic acid (PA) to diacylglycerol (DAG), the penultimate step in triglycerides (TAG) biosynthesis as well as transcriptional co-activator function. In the cytosol and ER, lipin1 carries out its lipid …
Exosomes Released From Multiple Myeloma Cells Influence The Angiogenic Function Of Endothelial Cells By Regulating Microrna-29b, Qinmao Ye
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Multiple myeloma is a hematological malignancy characterized by clonal proliferation of plasma cells generally caused by chromosomal abnormalities. It occurs in the bone marrow, which is the microenvironment of multiple myeloma. Exosomes (EXs) are 30-100 nm membrane-derived micro-vesicles containing various of bioactive molecules, such as microRNAs, to mediate the cell-cell interaction. Numerous studies reported that exosomes play a significant role in tumor microenvironment. Angiogenesis has the important implication in tumor exacerbation to supply nutrients to promote the progression of cancer cells through endothelial cells (ECs). Some studies demonstrated that microRNA-29b (miR-29b) can suppress tumor development and inhibit angiogenesis. Therefore, in …
The Effect Of Increased Quizzing On Retention Of Material By Histology Laboratory Students, R. J. Nogrady
The Effect Of Increased Quizzing On Retention Of Material By Histology Laboratory Students, R. J. Nogrady
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In traditional approaches to teaching, examinations and quizzes have been considered secondary activities, designed to assess and motivate learning, but not generally as teaching tools in themselves (Roediger and Butler, 2011). However, abundant psychological research in laboratory settings indicates that the act of taking a quiz or examination on the material can directly enhance retention of that material in ways which are distinct from and often more effective than restudying of the material. This phenomenon is now referred to as the testing effect. The testing effect hypothesis asserts that (1) repeated retrieval attempts have a longer lasting effect on retention …
A Novel Method To Analyze Dna Breaks And Repair In Human Cells, Caitlin Elizabeth Goodman
A Novel Method To Analyze Dna Breaks And Repair In Human Cells, Caitlin Elizabeth Goodman
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Microsatellites repeat sequences are prone to forming non-canonical DNA structures and mutations. These areas of the genome can undergo expansions and contractions and are responsible for a variety of inherited neurological and neuromuscular disorders. Hairpin structures formed by trinucleotide repeats can lead to replication fork stalling, and fork collapse causing DNA double strand breaks. Various mechanisms are involved in processing microsatellites including mismatch repair, base excision repair, and crossover junction endonuclease cleavage. These processes, which are supposed to protect the genome, could also be the culprits which are causing mutations. In order to test and study this hypothesis, the use …
The Missing Metric: An Evaluation Of Microorganism Importance In Wetland Assessments, Aaron John Onufrak
The Missing Metric: An Evaluation Of Microorganism Importance In Wetland Assessments, Aaron John Onufrak
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In the contiguous US, an estimated 50% of original wetland areas have been lost since the late 1700s. In growing recognition of the importance of preserving wetland ecosystem function, federal and state agencies have developed proxy-based functional-assessment procedures to manage and preserve remaining wetland areas. Ohio uses the Ohio Rapid Assessment Method (ORAM) to score wetland quality based on six metrics: wetland size, buffer width and surrounding land use, hydrology, habitat alteration and development, special wetland communities, and vegetation. Currently, the ORAM, and many other wetland scoring systems, do not consider microorganisms when determining wetland quality. This is particularly notable, …
Regulation Of Microvesicle Particle Release In Keratinocytes, Azeezat Afolake Awoyemi
Regulation Of Microvesicle Particle Release In Keratinocytes, Azeezat Afolake Awoyemi
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Microvesicle particles (MVPs) are produced from cellular membranes and are thought to mediate cell-cell communication, including in response to stressors such as UVB radiation and thermal burn injury. Previous studies have shown that stress-induced MVP release requires the platelet-activating factor (PAF) receptor in human keratinocytes and that pharmacological inhibition of acid sphingomyelinase (ASM) blocked this release. To validate a genetic role for ASM in MVP release, we used CRISPR-Cas9 gene silencing in human keratinocytes and primary fibroblasts derived from ASM-knockout mice. Though MVP release was partially blocked in ASM-deficient mouse fibroblasts, the inability to fully knockdown ASM in HaCaT cells …
Lonicera Maackii Alters Decay Dynamics Of Coarse Woody Debris, Michaela J. Woods
Lonicera Maackii Alters Decay Dynamics Of Coarse Woody Debris, Michaela J. Woods
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Since industrialization, anthropogenic carbon emissions have led to excess atmospheric carbon dioxide that may alter the stability of ecosystem processes. Microorganisms are essential in mitigating excess carbon and play a notable role in the breakdown of organic material. This process, decomposition, is essential in forested ecosystems where microorganisms can recycle nutrients and store carbon in soil organic matter or release it through respiration. Fungi participate in decomposition through the release of enzymes responsible for carrying out the chemical reactions that break down plant material. Species introductions have the potential to alter decomposition dynamics. In the Midwestern US, the invasive shrub …
Fast Voltage-Gated Sodium Channel Currents And Action Potential Firing In R6/2 Skeletal Muscle, Eric Joshua Reed
Fast Voltage-Gated Sodium Channel Currents And Action Potential Firing In R6/2 Skeletal Muscle, Eric Joshua Reed
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Huntington’s disease (HD) is a degenerative disorder caused by expanded CAG repeats in the Huntingtin gene, which results in cognitive problems as well as muscle weakness, chorea, rigidity, and dystonia. Most research in HD has focused on neurodegeneration, but recent studies have found peripheral defects that may help explain the debilitating motor symptoms of HD. We have shown that skeletal muscle from the R6/2 transgenic mouse model of HD is hyperexcitable due to decreases in resting chloride and potassium currents. Other groups have speculated that the fast voltage-gated sodium channels may be affected in Huntington’s disease as well. To fully …
Avicin Is A Potent Sphingomyelinase Inhibitor That Blocks K-Ras Plasma Membrane Interaction And Its Oncogenic Activity, Christian M. Garrido
Avicin Is A Potent Sphingomyelinase Inhibitor That Blocks K-Ras Plasma Membrane Interaction And Its Oncogenic Activity, Christian M. Garrido
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Ras proteins are small GTPases that regulate cell growth, differentiation and apoptosis. There are three main isoforms: H-, N-, and K-Ras in mammalian cells, and they cycle between an active GTP- and inactive GDP-bound states. Constitutively active Ras mutations are found in ~15% of all human cancers. Of those, oncogenic K-Ras is found in ~98% of pancreatic, ~52% colorectal, and ~32% of lung cancers. In nearly 30 years since its discovery, there are no anti-K-Ras drugs currently available for clinical use. Since K-Ras must be localized to the plasma membrane (PM) for its full biological activity, targeting K-Ras PM interaction …
Comparing Created And Natural Depressional Wetlands Through Trophic Analysis Of Macroinvertebrates, Shante N. Eisele
Comparing Created And Natural Depressional Wetlands Through Trophic Analysis Of Macroinvertebrates, Shante N. Eisele
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Macroinvertebrates are important contributors to wetland ecosystems due to their role in decomposition, nutrient cycling, and as a food resource for other organisms. Several studies have analyzed the macroinvertebrate communities in created wetlands, but few have evaluated them in the context of trophic structure in both created and natural wetlands. The objective of this study is to better understand benthic macroinvertebrate community composition and trophic structure in created and natural wetlands. My central hypotheses were that macroinvertebrate communities in created wetlands would have (1) differing composition and (2) less complex trophic structure with shorter food-chain length compared to natural wetlands. …
Osmotic Activation Of Sperm Motility Via Water Flow Through Aquaporins In The Freeze-Tolerant Cope's Gray Treefrog, Dryophytes Chrysoscelis, Deja Miller
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Gametes of gray treefrogs, Dryophytes chrysoscelis, are deposited into freshwater ponds. Sperm undergo spermatogenesis and maturation beginning in the seminiferous tubules and migrating to the lumen. In mammals and fishes, these cells are immotile within the isosmotic fluid of the testes and have motility activated by exposure to a hyper- or hypoosmotic medium. Water flows into or out of the sperm cell, altering intracellular ionic concentrations, and ultimately stimulates flagellar movement. We tested the hypothesis that exposure to a hypotonic environment activates motility of gray treefrog sperm. We also hypothesized that osmotic water uptake is facilitated by expression of water …
Low-Impact Yoga Improves Flexibility, But Has No Effect On Heart Rate Variability In Sedentary Adult Women, Lauren Marie Shafer
Low-Impact Yoga Improves Flexibility, But Has No Effect On Heart Rate Variability In Sedentary Adult Women, Lauren Marie Shafer
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Heart disease is the leading cause of death among adults in the United States and more than 600,000 people per year die when the condition goes untreated. Many cardiovascular maladies, such as high blood pressure and heart disease, can be markedly improved with lifestyle changes, including eating a healthy diet and regular exercise. In this study, 15 sedentary adult women (aged 19-63 years) participated in a prescribed 12-week yoga program. Electrocardiography was used to measure Heart Rate Variability, a tool that assesses autonomic tone on the heart. Autonomic nervous system activity is assessed at VLF, LF, and HF spectral components. …
Discovery Of Small Molecules Blocking Oncogenic K-Ras Activity, Sarah E. Kovar
Discovery Of Small Molecules Blocking Oncogenic K-Ras Activity, Sarah E. Kovar
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Ras proteins were the first human oncogenes discovered. Although Ras has been found to be the most frequently mutated oncogene, there are currently no anti-Ras-specific drugs available in the clinic. Ras is responsible for initiating cellular pathways that include proliferation, survival, and apoptosis. There are three ubiquitously expressed Ras isoforms in mammalian cells: H-, N-, and K-Ras. Interaction with the plasma membrane is required for Ras biological activity. When Ras interaction with the plasma membrane is blocked, Ras activity is inhibited. Two compounds (from Dr. Ketcha, WSU Chemistry Department) were tested and shown to dissociate K-Ras, but not H-Ras from …
A Planarian Tau Tubulin Kinase Homolog Is Required For Spermatogenesis And Epithelial Ciliogenesis, Robert Alan Magley
A Planarian Tau Tubulin Kinase Homolog Is Required For Spermatogenesis And Epithelial Ciliogenesis, Robert Alan Magley
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Tubulin comprises the structural element of microtubules and Tau is one of many microtubule-associated proteins. Tau Tubulin Kinase (TTBK) phosphorylates both Tau and Tubulin and is required for the initial steps of cilia formation. Due to the structural similarities between cilia and sperm flagella, as well as the enriched expression of TTBK1 and TTBK2 in human testes, we hypothesized that TTBK homologs play a role in sperm maturation. This hypothesis was tested in the planarian Schmidtea mediterranea, a lophotrochozoan model capable of whole-body regeneration and development a complete reproductive system post-embryonically. Six TTBK homologs were identified in the genome of …
Demography And Dendrochronology Of A Disjunct Population Of Eastern Hemlock In Southwestern Ohio, Marie Johnson
Demography And Dendrochronology Of A Disjunct Population Of Eastern Hemlock In Southwestern Ohio, Marie Johnson
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Edge and isolated plant populations provide information about the resilience and the most basic resource needs of a species. Plant demography examines changes in population size and structure over time. An isolated, disjunct eastern hemlock population in Clifton Gorge State Nature Preserve, Yellow Springs, Ohio consists of two distinct subpopulations each with different environmental characteristics, reproductive capacities, and health ratings. Both subpopulations at Clifton Gorge were found to exhibit significant decreases in average annual ring width through time. Linear regression modeling determined that average annual growing season precipitation and temperature were the strongest predictors of these growth trends. A comparative …
Availability Of Fermentable Nutrients Affect Gut Microbiota Composition, Trupthi Mehta
Availability Of Fermentable Nutrients Affect Gut Microbiota Composition, Trupthi Mehta
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Recent studies have increasingly established the role of gut microbiota in human health and disease. Diseases such as inflammatory bowel disease, colon cancer, cardiovascular disease and many neurological disorders have been linked to specific gut microbiota composition and disturbances. There have also been attempts in recent years to modulate gut microbial composition with the use of prebiotics and probiotics to promote healthy gut and prevent diseases. This thesis investigates whether the availability of fermentable nutrients high in fiber and antioxidants such as found in green coffee, roasted coffee, and salami infused with various prebiotics altered the composition and abundance of …
Nanomaterial Charge-Dependent Platelet Activating Factor Receptor Agonism In Human Epidermal Cells, Shahryar Jamshed Qureshi
Nanomaterial Charge-Dependent Platelet Activating Factor Receptor Agonism In Human Epidermal Cells, Shahryar Jamshed Qureshi
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Platelet Activating Factor (PAF) and its associated receptor, the PAF Receptor (PAFR), are important mediators of intercellular communication during an immune response. Once a physiological stimulus triggers an inflammatory response, epithelial, endothelial and immune cells synthesize and release PAF. PAF mediates the recruitment of immune cells, platelets, angiogenesis, expression of various genes, and increased PAF biosynthesis (Brown, 2006; Han, 2006; Whatley, 1988; Axelrod, 1988). In this study, we utilized HaCaT cells and a well characterized KB cell line derived from nasopharyngeal cells, which do not natively express the PAFR. KB cells had previously been transfected with a PAF receptor (KBP) …
Monitoring Ohio Bat Communities And Populations Using Mobile Acoustics, Molly C. Simonis
Monitoring Ohio Bat Communities And Populations Using Mobile Acoustics, Molly C. Simonis
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The goal of my thesis is to: 1) provide baseline information of where Ohio bats are foraging in Wright State University's (WSU) campus woods in relation to forest age and habitat (Chapter 1), 2) determine potential roost availability for local bats (Chapter 1), and 3) examine changes in state-wide species composition following the introduction of White-nose Syndrome (WNS; Chapter 2). In Chapter 1, I created walking bat acoustic routes and used generalized linear models to determine what forest ages and habitats had the greatest bat activity in the WSU campus woods. I conducted habitat transects throughout all forest ages to …
Anthropogenic Noise Alters Avian Community Composition In Temperate Forests, Chelsea Jill Wright
Anthropogenic Noise Alters Avian Community Composition In Temperate Forests, Chelsea Jill Wright
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Noise is an under-appreciated source of pollution that can influence the spatial distribution of birds. In this study, I examined how noise frequency and intensity (both background noise (kHz) and decibel levels (dB)) affected avian richness, density, and number of birds that sing with the same frequency as anthropogenic noise (low note frequency). I also examined the responses of two species in detail, the Eastern Wood Pewee and the Acadian Flycatcher, because they lack song plasticity. I examined whether they responded to noise by avoiding "noisy" areas or shifting their song frequency. I examined the response of bird communities to …
The Response Of Unpolarized Macrophages (Raw 264.7)/Keratinocytes (Pam-212) Monolayer And Co-Culture System To Herpes Simplex Virus Type 1 (Hsv-1) Replication During The Infection., Fahad Mohammed Alradi
The Response Of Unpolarized Macrophages (Raw 264.7)/Keratinocytes (Pam-212) Monolayer And Co-Culture System To Herpes Simplex Virus Type 1 (Hsv-1) Replication During The Infection., Fahad Mohammed Alradi
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Keratinocytes and neurons cells are the main target for Herpes Simplex Virus Type 1 (HSV-1) invasion. Moreover, keratinocytes are the most abundant cell types in the epidermis layer in the skin. Therefore, they are the first cells to encounter HSV-1 in the primary infection. Next, the virus reaches the nerve endings and is transferred to neuronal cells as a result from the primary infection. In between these two events, innate immune cells including monocytes and macrophages response is activated and recruited to the infection site. In this study, keratinocytes (PAM-212) and murine macrophage (RAW 264.7) cell lines were utilized to …
Community Structure And Epizootic Infection Prevalence Of Northern Wisconsin Anurans, Kayla Christine Watters
Community Structure And Epizootic Infection Prevalence Of Northern Wisconsin Anurans, Kayla Christine Watters
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Amphibian populations are declining globally at historically rapid rates, and while a multitude of factors have contributed to amphibian population declines, emerging infectious diseases, such as chytridiomycosis and ranavirus have been linked to a large proportion of the reported amphibian mass mortality events. Distribution and infection prevalence data for chytridiomycosis and ranavirus are lacking, and effective surveillance is crucial. This project aims to describe anuran richness, relative abundance, habitat occupancy, and community structure and to identify the chytridiomycosis and ranavirus infection prevalence rates of the anuran population at Dairymen's Inc. Wood frogs, spring peepers, boreal chorus frogs, northern leopard frogs, …
The Effects Of Socs1, Socs3 And Hsv-1 Infection On Morphology, Cell Viability And Rab7 Expression In Polarized M1 And M2 Raw 264.7 Murine Macrophages, Jessica Renee Hey
The Effects Of Socs1, Socs3 And Hsv-1 Infection On Morphology, Cell Viability And Rab7 Expression In Polarized M1 And M2 Raw 264.7 Murine Macrophages, Jessica Renee Hey
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HSV-1 causes a life-long infection in its host and has evolved multiple strategies to facilitate infection and evade the immune response. This virus has been found to enter cells by both endocytosis and fusion. The way the virus exploits endocytosis is not fully understood. Recent studies have uncovered roles of Rab GTPases, key regulators in intracellular membrane trafficking pathways, in distinct steps of the HSV-1 life cycle (Raza et al., 2018). This study will focus on analyzing the levels of the late endosomal regulator Rab7 expression in macrophages infected with HSV-1. Revealing the effect of virus on the levels of …
Effects Of Voluntary Physical Rehabilitation On Neurogenesis In Svz And Functional Recovery After Ischemic Stroke, Anuranjani Balakrishnan
Effects Of Voluntary Physical Rehabilitation On Neurogenesis In Svz And Functional Recovery After Ischemic Stroke, Anuranjani Balakrishnan
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Stroke is the leading cause of long-term disability and 87% of all strokes are due to ischemic strokes. In this current study, we examined whether voluntary physical rehabilitation can influence neurogenesis (measured by Doublecortin) in the subventricular zone and show improved motor functional recovery in 10-12 month female rats after ischemia. We saw a significant increase in the neurogenesis (measured by doublecortin) of all three regions (anterior, middle and posterior) of SVZ in the rehab animals compared to control group when using a two-way variance ANOVA test, although we were unable to see significant differences in paired t-tests of similar …
Virus Production And Cell Viability Of Hsv-1-Infected Murine Keratinocytes (Hel-30) Co-Cultured With Murine Macrophages (Raw 264.7), Barry Graffagna
Virus Production And Cell Viability Of Hsv-1-Infected Murine Keratinocytes (Hel-30) Co-Cultured With Murine Macrophages (Raw 264.7), Barry Graffagna
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Keratinocytes are the most abundant type of cell in the outer layer of skin, the epidermis, and provide barrier against pathogens from invading. However, Herpes Simplex Virus Type 1 (HSV-1) targets these keratinocytes for infection, and later infects neurons to establish lifelong latency. The keratinocytes stimulate the innate immune system to engage and to destroy the virus. Among the cells of the innate immune system to respond to the viral invasion is the macrophage. In this study, RAW 264.7 macrophage and HEL-30 keratinocyte monolayers were challenged in vitro with HSV-1 at a multiplicity of infection (MOI) of 0.1 to investigate …