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Articles 9301 - 9330 of 10790
Full-Text Articles in Entire DC Network
Electrically Mediated Delivery Of Plasmid Dna To The Skin, Using A Multielectrode Array, Richard Heller, Yolmari Criz, Loree C. Heller, Richard A. Gilbert, Mark J. Jaroszeski
Electrically Mediated Delivery Of Plasmid Dna To The Skin, Using A Multielectrode Array, Richard Heller, Yolmari Criz, Loree C. Heller, Richard A. Gilbert, Mark J. Jaroszeski
Bioelectrics Publications
The easy accessibility of skin makes it an excellent target for gene transfer protocols. To take full advantage of skin as a target for gene transfer, it is important to establish an efficient and reproducible delivery system. Electroporation is a strong candidate to meet this delivery criterion. Electroporation of the skin is a simple, direct, in vivo method to deliver genes for therapy. Previously, delivery to the skin was performed by means of applicators with relatively large distances between electrodes, resulting in significant muscle stimulation and pain. These applicators also had limitations in controlling the directionality of the applied field. …
Cardiomyocyte-Derived Adiponectin Is Biologically Active In Protecting Against Myocardial Ischemia-Reperfusion Injury., Yajing Wang, Wayne Bond Lau, Erhe Gao, Ling Tao, Yuexing Yuan, Rong Li, Xiaoliang Wang, Walter J. Koch, Xin-Liang Ma
Cardiomyocyte-Derived Adiponectin Is Biologically Active In Protecting Against Myocardial Ischemia-Reperfusion Injury., Yajing Wang, Wayne Bond Lau, Erhe Gao, Ling Tao, Yuexing Yuan, Rong Li, Xiaoliang Wang, Walter J. Koch, Xin-Liang Ma
Department of Emergency Medicine Faculty Papers
Adiponectin (APN) has traditionally been viewed as an adipocyte-specific endocrine molecule with cardioprotective effects. Recent studies suggest that APN is also expressed in cardiomyocytes. However, biological significances of this locally produced APN remain completely unknown. The aim of this study was to investigate the pathological and pharmacological significance of cardiac-derived APN in cardiomyocyte pathology. Adult cardiomyocytes from wild-type littermates (WT) or gene-deficient mice were pretreated with vehicle (V) or rosiglitazone (RSG) for 6 h followed by simulated ischemia-reperfusion (SI/R, 3 h/12 h). Compared with WT cardiomyocytes, myocytes from APN knockout (APN-KO) mice sustained greater SI/R injury, evidenced by greater oxidative/nitrative …
Transgenic Rat Model Of Neurodegeneration Caused By Mutation In The Tdp Gene., Hongxia Zhou, Cao Huang, Han Chen, Dian Wang, Carlisle P Landel, Pedro Yuxing Xia, Robert Bowser, Yong-Jian Liu, Xu Gang Xia
Transgenic Rat Model Of Neurodegeneration Caused By Mutation In The Tdp Gene., Hongxia Zhou, Cao Huang, Han Chen, Dian Wang, Carlisle P Landel, Pedro Yuxing Xia, Robert Bowser, Yong-Jian Liu, Xu Gang Xia
Department of Pathology, Anatomy, and Cell Biology Faculty Papers
TDP-43 proteinopathies have been observed in a wide range of neurodegenerative diseases. Mutations in the gene encoding TDP-43 (i.e., TDP) have been identified in amyotrophic lateral sclerosis (ALS) and in frontotemporal lobe degeneration associated with motor neuron disease. To study the consequences of TDP mutation in an intact system, we created transgenic rats expressing normal human TDP or a mutant form of human TDP with a M337V substitution. Overexpression of mutant, but not normal, TDP caused widespread neurodegeneration that predominantly affected the motor system. TDP mutation reproduced ALS phenotypes in transgenic rats, as seen by progressive degeneration of motor neurons …
P66shc--A Longevity Redox Protein In Human Prostate Cancer Progression And Metastasis : P66shc In Cancer Progression And Metastasis., Mythilypriya Rajendran, Paul Thomes, Li Zhang, Suresh Veeramani, Ming-Fong Lin
P66shc--A Longevity Redox Protein In Human Prostate Cancer Progression And Metastasis : P66shc In Cancer Progression And Metastasis., Mythilypriya Rajendran, Paul Thomes, Li Zhang, Suresh Veeramani, Ming-Fong Lin
Journal Articles: Biochemistry & Molecular Biology
p66Shc, a 66 kDa proto-oncogene Src homologous-collagen homologue (Shc) adaptor protein, is classically known in mediating receptor tyrosine kinase signaling and recently identified as a sensor to oxidative stress-induced apoptosis and as a longevity protein in mammals. The expression of p66Shc is decreased in mice and increased in human fibroblasts upon aging and in aging-related diseases, including prostate cancer. p66Shc protein level correlates with the proliferation of several carcinoma cells and can be regulated by steroid hormones. Recent advances point that p66Shc protein plays a role in mediating cross-talk between steroid hormones and redox signals by serving as a common …
Cardioprotection By Regular Ethanol Consumption: Potential Mechanisms And Clinical Application., Masami Miyamae, Kazuhiro Kaneda, Naochika Domae, Vincent M. Figueredo, M.D.
Cardioprotection By Regular Ethanol Consumption: Potential Mechanisms And Clinical Application., Masami Miyamae, Kazuhiro Kaneda, Naochika Domae, Vincent M. Figueredo, M.D.
Division of Cardiology Faculty Papers
Epidemiological studies demonstrate that excessive drinking is associated with hypertension, cerebral bleeding and loss of cardiac contractility. Conversely, studies have shown that mortality rates for people who regularly drink ethanol in moderation are lower than in abstainers, primarily due to decreased fatal ischemic heart disease. Further, moderate ethanol consumers have lower rates of myocardial infarction compared with abstainers. These beneficial cardiac effects may be due to pleiotropic effects of ethanol on lipids, platelets, and fibrinolytic activity. During the past decade, studies conducted in several animal models have revealed that light to moderate regular ethanol consumption renders hearts more tolerant to …
Mitochondrial Phylogenomics Of The Bivalvia (Mollusca): Searching For The Origin And Mitogenomic Correlates Of Doubly Uniparental Inheritance Of Mtdna, Hélène Doucet-Beaupré, Sophie Breton, Eric G. Chapman, Pierre U. Blier, Arthur E. Bogan, Donald T. Stewart, Walter R. Hoeh
Mitochondrial Phylogenomics Of The Bivalvia (Mollusca): Searching For The Origin And Mitogenomic Correlates Of Doubly Uniparental Inheritance Of Mtdna, Hélène Doucet-Beaupré, Sophie Breton, Eric G. Chapman, Pierre U. Blier, Arthur E. Bogan, Donald T. Stewart, Walter R. Hoeh
Entomology Faculty Publications
BACKGROUND: Doubly uniparental inheritance (DUI) is an atypical system of animal mtDNA inheritance found only in some bivalves. Under DUI, maternally (F genome) and paternally (M genome) transmitted mtDNAs yield two distinct gender-associated mtDNA lineages. The oldest distinct M and F genomes are found in freshwater mussels (order Unionoida). Comparative analyses of unionoid mitochondrial genomes and a robust phylogenetic framework are necessary to elucidate the origin, function and molecular evolutionary consequences of DUI. Herein, F and M genomes from three unionoid species, Venustaconcha ellipsiformis, Pyganodon grandis and Quadrula quadrula have been sequenced. Comparative genomic analyses were carried out on these …
Acat1 Gene Ablation Increases 24(S)-Hydroxycholesterol Content In The Brain And Ameliorates Amyloid Pathology In Mice With Ad, Elena Y. Bryleva, Maximillian A. Rogers, Catherine C. Y. Chang, Floyd Buen
Acat1 Gene Ablation Increases 24(S)-Hydroxycholesterol Content In The Brain And Ameliorates Amyloid Pathology In Mice With Ad, Elena Y. Bryleva, Maximillian A. Rogers, Catherine C. Y. Chang, Floyd Buen
Dartmouth Scholarship
Cholesterol metabolism has been implicated in the pathogenesis of several neurodegenerative diseases, including the abnormal accumulation of amyloid-beta, one of the pathological hallmarks of Alzheimer disease (AD). Acyl-CoA:cholesterol acyltransferases (ACAT1 and ACAT2) are two enzymes that convert free cholesterol to cholesteryl esters. ACAT inhibitors have recently emerged as promising drug candidates for AD therapy. However, how ACAT inhibitors act in the brain has so far remained unclear. Here we show that ACAT1 is the major functional isoenzyme in the mouse brain. ACAT1 gene ablation (A1-) in triple transgenic (i.e., 3XTg-AD) mice leads to more than 60% reduction in full-length human …
Deficient Cd40-Traf6 Signaling In Leukocytes Prevents Atherosclerosis By Skewing The Immune Response Toward An Antiinflammatory Profile, Esther Lutgens, Dirk Lievens, Linda Beckers, Erwin Wijnands, Oliver Soehnlein, Alma Zernecke, Tom Seijkens, David Engel, Jack Cleutjens, Anna M. Keller, Shalin H. Naike, Louis Boon, Hafid Ait Oufella, Ziad Mallat, Cory L. Ahonen, Randolph J. Noelle, Menno P. De Winther, Mat J. Daemen, Erik A. Biessen, Christian Weber
Deficient Cd40-Traf6 Signaling In Leukocytes Prevents Atherosclerosis By Skewing The Immune Response Toward An Antiinflammatory Profile, Esther Lutgens, Dirk Lievens, Linda Beckers, Erwin Wijnands, Oliver Soehnlein, Alma Zernecke, Tom Seijkens, David Engel, Jack Cleutjens, Anna M. Keller, Shalin H. Naike, Louis Boon, Hafid Ait Oufella, Ziad Mallat, Cory L. Ahonen, Randolph J. Noelle, Menno P. De Winther, Mat J. Daemen, Erik A. Biessen, Christian Weber
Dartmouth Scholarship
The CD40–CD40 ligand (CD40L) signaling axis plays an important role in immunological pathways. Consequently, this dyad is involved in chronic inflammatory diseases, including atherosclerosis. Inhibition of CD40L in apolipoprotein E (Apoe)–deficient ( Apoe - / - ) mice not only reduced atherosclerosis but also conferred a clinically favorable plaque phenotype that was low in inflammation and high in fibrosis. Blockade of CD40L may not be therapeutically feasible, as long-term inhibition will compromise systemic immune responses. Conceivably, more targeted intervention strategies in CD40 signaling will have less deleterious side effects. We report that deficiency in hematopoietic CD40 reduces atherosclerosis and induces …
Running Enhances Spatial Pattern Separation In Mice., David J Creer, Carola Romberg, Lisa M Saksida, Henriette Van Praag, Timothy J Bussey
Running Enhances Spatial Pattern Separation In Mice., David J Creer, Carola Romberg, Lisa M Saksida, Henriette Van Praag, Timothy J Bussey
Brain and Mind Institute Researchers' Publications
Increasing evidence suggests that regular exercise improves brain health and promotes synaptic plasticity and hippocampal neurogenesis. Exercise improves learning, but specific mechanisms of information processing influenced by physical activity are unknown. Here, we report that voluntary running enhanced the ability of adult (3 months old) male C57BL/6 mice to discriminate between the locations of two adjacent identical stimuli. Improved spatial pattern separation in adult runners was tightly correlated with increased neurogenesis. In contrast, very aged (22 months old) mice had impaired spatial discrimination and low basal cell genesis that was refractory to running. These findings suggest that the addition of …
Recent Experimental And Clinical Findings In The Skeleton Associated With Loss Of Estrogen Hormone Or Estrogen Receptor Activity, Eric P. Smith, Bonny Specker, Kenneth S Korach
Recent Experimental And Clinical Findings In The Skeleton Associated With Loss Of Estrogen Hormone Or Estrogen Receptor Activity, Eric P. Smith, Bonny Specker, Kenneth S Korach
Ethel Austin Martin Program Publications
Studies on rodent models and rare human disorders of estrogen production or response have revealed an increased complexity of the actions of estrogen on bone. ERalpha disruption in human males results in delayed epiphyseal maturation, tall stature, trabecular thinning, marked cortical thinning, genu valgum and significantly reduced cortical vBMD, but trabecular number is preserved and there is normal to increased periosteal expansion. Aromatase deficiency results overall in a similar phenotype, although less is known about skeletal architecture. Importantly, estrogen replacement in these individuals, even if provided late in the third decade, may normalize aBMD. Less certain is whether there is …
Anti-Argonaute Rip-Chip Shows That Mirna Transfections Alter Global Patterns Of Mrna Recruitment To Microribonucleoprotein Complexes, Wang-Xia Wang, Bernard R. Wilfred, Yanling Hu, Arnold J. Stromberg, Peter T. Nelson
Anti-Argonaute Rip-Chip Shows That Mirna Transfections Alter Global Patterns Of Mrna Recruitment To Microribonucleoprotein Complexes, Wang-Xia Wang, Bernard R. Wilfred, Yanling Hu, Arnold J. Stromberg, Peter T. Nelson
Pathology and Laboratory Medicine Faculty Publications
MicroRNAs (miRNAs) play key roles in gene expression regulation by guiding Argonaute (AGO)-containing microribonucleoprotein (miRNP) effector complexes to target polynucleotides. There are still uncertainties about how miRNAs interact with mRNAs. Here we employed a biochemical approach to isolate AGO-containing miRNPs from human H4 tumor cells by co-immunoprecipitation (co-IP) with a previously described anti-AGO antibody. Co-immunoprecipitated (co-IPed) RNAs were subjected to downstream Affymetrix Human Gene 1.0 ST microarray analysis. During rigorous validation, the "RIP-Chip" assay identified target mRNAs specifically associated with AGO complexes. RIP-Chip was performed after transfecting brain-enriched miRNAs (miR-107, miR-124, miR-128, and miR-320) and nonphysiologic control miRNA to identify …
The Eagleville Times,Volume 8, Issue 2, Debbie Ryan
The Eagleville Times,Volume 8, Issue 2, Debbie Ryan
Eagleville Times
No abstract provided.
Elevated Albumin In Retinas Of Monkeys With Experimental Glaucoma, Louvenia Carter-Dawson, Yujin Zhang, Ronald S Harwerth, Ricky Rojas, Pramod Dash, Xinping C Zhao, Elizabeth Woldemussie, Guadalupe Ruiz, Alice Chuang, William P Dubinsky, John B Redell
Elevated Albumin In Retinas Of Monkeys With Experimental Glaucoma, Louvenia Carter-Dawson, Yujin Zhang, Ronald S Harwerth, Ricky Rojas, Pramod Dash, Xinping C Zhao, Elizabeth Woldemussie, Guadalupe Ruiz, Alice Chuang, William P Dubinsky, John B Redell
Faculty, Staff and Student Publications
PURPOSE: To establish the identity of a prominent protein, approximately 70 kDa, that is markedly increased in the retina of monkeys with experimental glaucoma compared with the fellow control retina, the relationship to glaucoma severity, and its localization in the retina.
METHODS: Retinal extracts were subjected to 2-D gel electrophoresis to identify differentially expressed proteins. Purified peptides from the abundant 70 kDa protein were analyzed and identified by liquid chromatography/mass spectrometry/mass spectrometry (LC/MS/MS) separation, and collision-induced dissociation sequencing. Protein identity was performed on MASCOT (Matrix Science, Boston, MA) and confirmed by Western blot. The relationship between the increase in this …
Cardiomyocyte Pdgfr-Beta Signaling Is An Essential Component Of The Mouse Cardiac Response To Load-Induced Stress, Vishnu Chintalgattu, Di Ai, Robert R Langley, Jianhu Zhang, James A Bankson, Tiffany L Shih, Anilkumar K Reddy, Kevin R Coombes, Iyad N Daher, Shibani Pati, Shalin S Patel, Jennifer S Pocius, George E Taffet, L Maximillian Buja, Mark L Entman, Aarif Y Khakoo
Cardiomyocyte Pdgfr-Beta Signaling Is An Essential Component Of The Mouse Cardiac Response To Load-Induced Stress, Vishnu Chintalgattu, Di Ai, Robert R Langley, Jianhu Zhang, James A Bankson, Tiffany L Shih, Anilkumar K Reddy, Kevin R Coombes, Iyad N Daher, Shibani Pati, Shalin S Patel, Jennifer S Pocius, George E Taffet, L Maximillian Buja, Mark L Entman, Aarif Y Khakoo
Faculty, Staff and Student Publications
PDGFR is an important target for novel anticancer therapeutics because it is overexpressed in a wide variety of malignancies. Recently, however, several anticancer drugs that inhibit PDGFR signaling have been associated with clinical heart failure. Understanding this effect of PDGFR inhibitors has been difficult because the role of PDGFR signaling in the heart remains largely unexplored. As described herein, we have found that PDGFR-beta expression and activation increase dramatically in the hearts of mice exposed to load-induced cardiac stress. In mice in which Pdgfrb was knocked out in the heart in development or in adulthood, exposure to load-induced stress resulted …
What Is Biomedical Informatics?, Elmer V Bernstam, Jack W Smith, Todd R Johnson
What Is Biomedical Informatics?, Elmer V Bernstam, Jack W Smith, Todd R Johnson
Faculty, Staff and Student Publications
Biomedical informatics lacks a clear and theoretically-grounded definition. Many proposed definitions focus on data, information, and knowledge, but do not provide an adequate definition of these terms. Leveraging insights from the philosophy of information, we define informatics as the science of information, where information is data plus meaning. Biomedical informatics is the science of information as applied to or studied in the context of biomedicine. Defining the object of study of informatics as data plus meaning clearly distinguishes the field from related fields, such as computer science, statistics and biomedicine, which have different objects of study. The emphasis on data …
Progressive Changes In Microglia And Macrophages In Spinal Cord And Peripheral Nerve In The Transgenic Rat Model Of Amyotrophic Lateral Sclerosis, David J. Graber, William F. Hickey, Brent T. Harris
Progressive Changes In Microglia And Macrophages In Spinal Cord And Peripheral Nerve In The Transgenic Rat Model Of Amyotrophic Lateral Sclerosis, David J. Graber, William F. Hickey, Brent T. Harris
Dartmouth Scholarship
The role of neuroinflammation in motor neuron death of amyotrophic lateral sclerosis (ALS) is unclear. The human mutant superoxide dismutase-1 (hmSOD1)-expressing murine transgenic model of ALS has provided some insight into changes in microglia activity during disease progression. The purpose of this study was to gain further knowledge by characterizing the immunological changes during disease progression in the spinal cord and peripheral nerve using the more recently developed hmSOD1 rat transgenic model of ALS. Using immunohistochemistry, the extent and intensity of tissue CD11b expression in spinal cord, lumbar nerve roots, and sciatic nerve were evaluated in hmSOD1 rats that were …
The Site Specific Demethylation In The 5'-Regulatory Area Of Nmda Receptor 2b Subunit Gene Associated With Cie-Induced Up-Regulation Of Transcription., Mei Qiang, Ashley Denny, Jiguo Chen, Maharaj K. Ticku, Bo Yan, George Henderson
The Site Specific Demethylation In The 5'-Regulatory Area Of Nmda Receptor 2b Subunit Gene Associated With Cie-Induced Up-Regulation Of Transcription., Mei Qiang, Ashley Denny, Jiguo Chen, Maharaj K. Ticku, Bo Yan, George Henderson
CAS Publications
BACKGROUND: The NMDA receptor represents a particularly important site of ethanol action in the CNS. We recently reported that NMDA receptor 2B (NR2B) gene expression was persistently up-regulated following chronic intermittent ethanol (CIE) treatment. Increasing evidence that epigenetic mechanisms are involved in dynamic and long-lasting regulation of gene expression in multiple neuroadaptive processes prompted us to investigate the role of DNA methylation in mediating CIE-induced up-regulation of NR2B gene transcription. To dissect the changes of DNA methylation in the NR2B gene, we have screened a large number of CpG sites within its 5'-regulatory area following CIE treatment. METHODS: Primary cortical …
Genomic Profiling Of Messenger Rnas And Micrornas Reveals Potential Mechanisms Of Tweak-Induced Skeletal Muscle Wasting In Mice, Siva K. Panguluri, Shephali Bhatnagar, Akhilesh Kumar, John J. Mccarthy, Apurva K. Srivastava, Nigel G. Cooper, Robert F. Lundy, Ashok Kumar
Genomic Profiling Of Messenger Rnas And Micrornas Reveals Potential Mechanisms Of Tweak-Induced Skeletal Muscle Wasting In Mice, Siva K. Panguluri, Shephali Bhatnagar, Akhilesh Kumar, John J. Mccarthy, Apurva K. Srivastava, Nigel G. Cooper, Robert F. Lundy, Ashok Kumar
Physiology Faculty Publications
BACKGROUND: Skeletal muscle wasting is a devastating complication of several physiological and pathophysiological conditions. Inflammatory cytokines play an important role in the loss of skeletal muscle mass in various chronic diseases. We have recently reported that proinflammatory cytokine TWEAK is a major muscle-wasting cytokine. Emerging evidence suggests that gene expression is regulated not only at transcriptional level but also at post-transcriptional level through the expression of specific non-coding microRNAs (miRs) which can affect the stability and/or translation of target mRNA. However, the role of miRs in skeletal muscle wasting is unknown.
METHODOLOGY/PRINCIPAL FINDINGS: To understand the mechanism of action of …
Il-28 Supplants Requirement For Treg Cells In Protein Σ1-Mediated Protection Against Murine Experimental Autoimmune Encephalomyelitis (Eae), Agnieszka Rynda, Massimo Maddaloni, Javier Ochoa-Repáraz, Gayle Callis, David W. Pascual
Il-28 Supplants Requirement For Treg Cells In Protein Σ1-Mediated Protection Against Murine Experimental Autoimmune Encephalomyelitis (Eae), Agnieszka Rynda, Massimo Maddaloni, Javier Ochoa-Repáraz, Gayle Callis, David W. Pascual
Dartmouth Scholarship
Conventional methods to induce tolerance in humans have met with limited success. Hence, efforts to redirect tolerogen uptake using reovirus adhesin, protein sigma 1 (pσ1), may circumvent these shortcomings based upon the recent finding that when reovirus pσ1 is engineered to deliver chicken ovalbumin (OVA) mucosally, tolerance is obtained, even with a single dose. To test whether single-dose tolerance can be induced to treat EAE, proteolipid protein (PLP130–151) was genetically fused to OVA to pσ1 (PLP:OVA-pσ1) and shown to significantly ameliorate EAE, suppressing proinflammatory cytokines by IL-10+ forkhead box P3 (FoxP3)+ CD25+CD4+ T …
Spatiotemporal Structure Of Molecular Evolution Of H5n1 Highly Pathogenic Avian Influenza Viruses In Vietnam., Margaret A. Carrel, Michael Emch, R. Todd Jobe, Aaron Moody, Xiu-Feng Wan
Spatiotemporal Structure Of Molecular Evolution Of H5n1 Highly Pathogenic Avian Influenza Viruses In Vietnam., Margaret A. Carrel, Michael Emch, R. Todd Jobe, Aaron Moody, Xiu-Feng Wan
CVM Publications
BACKGROUND: Vietnam is one of the countries most affected by outbreaks of H5N1 highly pathogenic avian influenza viruses. First identified in Vietnam in poultry in 2001 and in humans in 2004, the virus has since caused 111 cases and 56 deaths in humans. In 2003/2004 H5N1 outbreaks, nearly the entire poultry population of Vietnam was culled. Our earlier study (Wan et al., 2008, PLoS ONE, 3(10): e3462) demonstrated that there have been at least six independent H5N1 introductions into Vietnam and there were nine newly emerged reassortants from 2001 to 2007 in Vietnam. H5N1 viruses in Vietnam cluster distinctly around …
Proliferation Of Aneuploid Human Cells Is Limited By A P53-Dependent Mechanism, Sarah L. Thompson, Duane A. Compton
Proliferation Of Aneuploid Human Cells Is Limited By A P53-Dependent Mechanism, Sarah L. Thompson, Duane A. Compton
Dartmouth Scholarship
Most solid tumors are aneuploid, and it has been proposed that aneuploidy is the consequence of an elevated rate of chromosome missegregation in a process called chromosomal instability (CIN). However, the relationship of aneuploidy and CIN is unclear because the proliferation of cultured diploid cells is compromised by chromosome missegregation. The mechanism for this intolerance of nondiploid genomes is unknown. In this study, we show that in otherwise diploid human cells, chromosome missegregation causes a cell cycle delay with nuclear accumulation of the tumor suppressor p53 and the cyclin kinase inhibitor p21. Deletion of the p53 gene permits the accumulation …
Cd4+ T Cell Regulation Of Cd25 Expression Controls Development Of Short-Lived Effector Cd8+ T Cells In Primary And Secondary Responses, Joshua J. Obar, Michael J. Molloy, Evan R. Jellison, Thomas A. Stoklasek, Weijun Zhang, Edward J. Usherwood, Leo Lefrançois
Cd4+ T Cell Regulation Of Cd25 Expression Controls Development Of Short-Lived Effector Cd8+ T Cells In Primary And Secondary Responses, Joshua J. Obar, Michael J. Molloy, Evan R. Jellison, Thomas A. Stoklasek, Weijun Zhang, Edward J. Usherwood, Leo Lefrançois
Dartmouth Scholarship
Both CD4(+) T cell help and IL-2 have been postulated to "program" activated CD8(+) T cells for memory cell development. However, the linkage between these two signals has not been well elucidated. Here we have studied effector and memory CD8(+) T cell differentiation following infection with three pathogens (Listeria monocytogenes, vesicular stomatitis virus, and vaccinia virus) in the absence of both CD4(+) T cells and IL-2 signaling. We found that expression of CD25 on antigen-specific CD8(+) T cells peaked 3-4 days after initial priming and was dependent on CD4(+) T cell help, likely through a CD28:CD80/86 mediated pathway. CD4(+) T …
Myosin Light Chain Kinase Mediates Transcellular Intravasation Of Breast Cancer Cells Through The Underlying Endothelial Cells: A Three-Dimensional Fret Study, S. Khuon, L. Liang, R. W. Dettman, P. H. S. Sporn, R. B. Wysolmerski, T.-L. Chew
Myosin Light Chain Kinase Mediates Transcellular Intravasation Of Breast Cancer Cells Through The Underlying Endothelial Cells: A Three-Dimensional Fret Study, S. Khuon, L. Liang, R. W. Dettman, P. H. S. Sporn, R. B. Wysolmerski, T.-L. Chew
Faculty & Staff Scholarship
No abstract provided.
The Novel Endosomal Membrane Protein Ema Interacts With The Class C Vps-Hops Complex To Promote Endosomal Maturation, Sungsu Kim, Yogesh P. Wairkar, Richard W. Daniels, Aaron Diantonio
The Novel Endosomal Membrane Protein Ema Interacts With The Class C Vps-Hops Complex To Promote Endosomal Maturation, Sungsu Kim, Yogesh P. Wairkar, Richard W. Daniels, Aaron Diantonio
Open Access Publications
Endosomal maturation is critical for accurate and efficient cargo transport through endosomal compartments. Here we identify a mutation of the novel Drosophila gene, ema (endosomal maturation defective) in a screen for abnormal synaptic overgrowth and defective protein trafficking. Ema is an endosomal membrane protein required for trafficking of fluid-phase and receptor-mediated endocytic cargos. In the ema mutant, enlarged endosomal compartments accumulate as endosomal maturation fails, with early and late endosomes unable to progress into mature degradative late endosomes and lysosomes. Defective endosomal down-regulation of BMP signaling is responsible for the abnormal synaptic overgrowth. Ema binds to and genetically interacts with …
The Public Health Impacts Of Concentrated Animal Feeding Operations On Local Communities, Michael Greger, Gowri Koneswaran
The Public Health Impacts Of Concentrated Animal Feeding Operations On Local Communities, Michael Greger, Gowri Koneswaran
Environment Collection
Large-scale farm animal production facilities, also known as concentrated animal feeding operations (CAFOs), release a significant amount of contaminants into the air and water. Adverse health effects related to exposure to these contaminants among CAFO workers have been welldocumented; however, less is known about their impact on the health of residents in nearby communities. Epidemiological research in this area suggests that neighboring residents are at increased risk of developing neurobehavioral symptoms and respiratory illnesses, including asthma. Additional research is needed to better understand community-scale exposures and health outcomes related to the management practices and emissions of CAFOs.
Developing Emotional Security Among Children Who Have Been Adopted, Kate Trujillo
Developing Emotional Security Among Children Who Have Been Adopted, Kate Trujillo
Electronic Theses and Dissertations
This study investigated the development of emotional security among 6-10 year old children who have been adopted by exposing them to an experimental condition during which they could engage with either a live dog or a robotic dog. The live dog was a certified therapy dog; the robotic dog was a FurReal® toy marketed by Hasbro as "Biscuit." Utilizing a mixed-method embedded experimental design, the experimental condition was intentionally structured to promote engagement between the participant and the dog or robot. 43 children who had been adopted from the child welfare system were randomly assigned to one of two groups. …
Recent Diarrhea Is Associated With Elevated Salivary Igg Responses To Cryptosporidium In Residents Of An Eastern Massachusetts Community, A. I. Egorov, L. M. Montuori Trimble, L. Ascolillo, H. D. Ward, Deborah A. Levy, R. D. Morris, E. N. Naumova, J. K. Griffiths
Recent Diarrhea Is Associated With Elevated Salivary Igg Responses To Cryptosporidium In Residents Of An Eastern Massachusetts Community, A. I. Egorov, L. M. Montuori Trimble, L. Ascolillo, H. D. Ward, Deborah A. Levy, R. D. Morris, E. N. Naumova, J. K. Griffiths
Journal Articles: Epidemiology
BACKGROUND: Serological data suggest that Cryptosporidium infections are common but underreported. The invasiveness of blood sampling limits the application of serology in epidemiological surveillance. We pilot-tested a non-invasive salivary anti-Cryptosporidium antibody assay in a community survey involving children and adults.
MATERIALS AND METHODS: Families with children were recruited in a Massachusetts community in July; symptoms data were collected at 3 monthly follow-up mail surveys. One saliva sample per person (n = 349) was collected via mail, with the last survey in October. Samples were analyzed for IgG and IgA responses to a recombinant C. hominis gp15 sporozoite protein using a …
Nip/Duoxa Is Essential For Drosophila Embryonic Development And Regulates Oxidative Stress Response., Xiaojun Xie, Jack Hu, Xiping Liu, Hanjuan Qin, Anthony Percival-Smith, Yong Rao, Shawn S C Li
Nip/Duoxa Is Essential For Drosophila Embryonic Development And Regulates Oxidative Stress Response., Xiaojun Xie, Jack Hu, Xiping Liu, Hanjuan Qin, Anthony Percival-Smith, Yong Rao, Shawn S C Li
Biochemistry Publications
NIP/DuoxA, originally cloned as a protein capable of binding to the cell fate determinant Numb in Drosophila, was recently identified as a modulator of reactive oxygen species (ROS) production in mammalian systems. Despite biochemical and cellular studies that link NIP/DuoxA to the generation of ROS through the dual oxidase (Duox) enzyme, the in vivo function of NIP/DuoxA has not been characterized to date. Here we report a genetic and functional characterization of nip in Drosophila melanogaster. We show that nip is essential for Drosophila development as nip null mutants die at the 1(st) larval instar. Expression of UAS-nip, but not …
The Magpie's Nest, Catherine Stephens, Fleet Library, Special Collections, Jan Baker
The Magpie's Nest, Catherine Stephens, Fleet Library, Special Collections, Jan Baker
Animals
This book was completed for Jan Baker's artists' book class, Printed Books
Vertical Dispersal Of Aedes (Stegomyia) Spp. In High-Rise Apartments In Putrajaya, Malaysia, Othman Wan-Norafikah, Wasi Ahmad Nazni, S. Noramiza, S. Shafa'ar-Ko'ohar, A. Azirol-Hisham, R. Nor-Hafizah, M.G. Sumarni, H. Mohd-Hasrul, Mohd Sofian-Azirun, H.L. Lee
Vertical Dispersal Of Aedes (Stegomyia) Spp. In High-Rise Apartments In Putrajaya, Malaysia, Othman Wan-Norafikah, Wasi Ahmad Nazni, S. Noramiza, S. Shafa'ar-Ko'ohar, A. Azirol-Hisham, R. Nor-Hafizah, M.G. Sumarni, H. Mohd-Hasrul, Mohd Sofian-Azirun, H.L. Lee
Research Publications (2006 to 2010)
A preliminary study on the vertical dispersal of Aedes populations in high-riseapartments was carried out in Presint 9, Putrajaya, Malaysia. Ovitraps were placed indoorswithin four blocks of high-rise apartments from the ground floors (0.0 – 3.0 m) until upto the tenth floors (28.1 – 30.0 m). Aedes aegypti was the dominant species found in theovitraps (87.85%), while Aedes albopictus was found in lower numbers. From total numberof larvae collected (650), 40.92% of these larvae were obtained from the fourth block;Block D. The peak density of Aedes sp. was observed at level 6 (16.1 – 18.0 m), whileAe. aegypti was found …