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Articles 91 - 98 of 98
Full-Text Articles in Microbiology
Herpes Simplex Virus And Interferon Signaling Induce Novel Autophagic Clusters In Sensory Neurons, Sarah Katzenell, David A. Leib
Herpes Simplex Virus And Interferon Signaling Induce Novel Autophagic Clusters In Sensory Neurons, Sarah Katzenell, David A. Leib
Dartmouth Scholarship
Herpes simplex virus 1 (HSV-1) establishes lifelong infection in the neurons of trigeminal ganglia (TG), cycling between productive infection and latency. Neuronal antiviral responses are driven by type I interferon (IFN) and are crucial to controlling HSV-1 virulence. Autophagy also plays a role in this neuronal antiviral response, but the mechanism remains obscure. In this study, HSV-1 infection of murine TG neurons triggered unusual clusters of autophagosomes, predominantly in neurons lacking detectable HSV-1 antigen. Treatment of neurons with IFN-β induced a similar response, and cluster formation by infection or IFN treatment was dependent upon an intact IFN-signaling pathway. The autophagic …
Local Corticotropin Releasing Hormone (Crh) Signals To Its Receptor Crhr1 During Postnatal Development Of The Mouse Olfactory Bulb, Isabella Garcia, Paramjit K Bhullar, Burak Tepe, Joshua Ortiz-Guzman, Longwen Huang, Alexander M Herman, Lesley Chaboub, Benjamin Deneen, Nicholas J Justice, Benjamin R Arenkiel
Local Corticotropin Releasing Hormone (Crh) Signals To Its Receptor Crhr1 During Postnatal Development Of The Mouse Olfactory Bulb, Isabella Garcia, Paramjit K Bhullar, Burak Tepe, Joshua Ortiz-Guzman, Longwen Huang, Alexander M Herman, Lesley Chaboub, Benjamin Deneen, Nicholas J Justice, Benjamin R Arenkiel
Faculty, Staff and Students Publications
Neuropeptides play important physiological functions during distinct behaviors such as arousal, learning, memory, and reproduction. However, the role of local, extrahypothalamic neuropeptide signaling in shaping synapse formation and neuronal plasticity in the brain is not well understood. Here, we characterize the spatiotemporal expression profile of the neuropeptide corticotropin-releasing hormone (CRH) and its receptor CRHR1 in the mouse OB throughout development. We found that CRH-expressing interneurons are present in the external plexiform layer, that its cognate receptor is expressed by granule cells, and show that both CRH and CRHR1 expression enriches in the postnatal period when olfaction becomes important towards olfactory-related …
True Durability: Hiv Virologic Suppression In An Urban Clinic And Implications For Timing Of Intensive Adherence Efforts And Viral Load Monitoring., Debra A Benator, Angelo Elmi, Manuel D Rodriguez, Howard B Gale, Virginia L. Kan, Heather J. Hoffman, Susan Tramazzo, Karen Hall, Angela Mcknight, Leah Squires
True Durability: Hiv Virologic Suppression In An Urban Clinic And Implications For Timing Of Intensive Adherence Efforts And Viral Load Monitoring., Debra A Benator, Angelo Elmi, Manuel D Rodriguez, Howard B Gale, Virginia L. Kan, Heather J. Hoffman, Susan Tramazzo, Karen Hall, Angela Mcknight, Leah Squires
Medicine Faculty Publications
Although the majority of HIV-infected patients who begin potent antiretroviral therapy should expect long-term virologic suppression, the realities in practice are less certain. Durability of viral suppression was examined to define the best timing of targeted adherence strategies and intensive viral load monitoring in an urban clinic population with multiple challenges to ART adherence. We examined the risk of viral rebound for patients who achieved two consecutive viral loads lower than the lower limit of quantification (LLOQ) within 390 days. For 791 patients with two viral loads below the LLOQ, viral rebound >LLOQ from the first viral load was 36.9 …
Large-Scale Identification Of Chemically Induced Mutations In Drosophila Melanogaster, Nele A Haelterman, Lichun Jiang, Yumei Li, Vafa Bayat, Hector Sandoval, Berrak Ugur, Kai Li Tan, Ke Zhang, Danqing Bei, Bo Xiong, Wu-Lin Charng, Theodore Busby, Adeel Jawaid, Gabriela David, Manish Jaiswal, Koen J T Venken, Shinya Yamamoto, Rui Chen, Hugo J Bellen
Large-Scale Identification Of Chemically Induced Mutations In Drosophila Melanogaster, Nele A Haelterman, Lichun Jiang, Yumei Li, Vafa Bayat, Hector Sandoval, Berrak Ugur, Kai Li Tan, Ke Zhang, Danqing Bei, Bo Xiong, Wu-Lin Charng, Theodore Busby, Adeel Jawaid, Gabriela David, Manish Jaiswal, Koen J T Venken, Shinya Yamamoto, Rui Chen, Hugo J Bellen
Faculty, Staff and Students Publications
Forward genetic screens using chemical mutagens have been successful in defining the function of thousands of genes in eukaryotic model organisms. The main drawback of this strategy is the time-consuming identification of the molecular lesions causative of the phenotypes of interest. With whole-genome sequencing (WGS), it is now possible to sequence hundreds of strains, but determining which mutations are causative among thousands of polymorphisms remains challenging. We have sequenced 394 mutant strains, generated in a chemical mutagenesis screen, for essential genes on the Drosophila X chromosome and describe strategies to reduce the number of candidate mutations from an average of …
On Individual, Sex And Age Differentiation Of Indian House Crow (Corvus Splendens) Call: A Preliminary Study In Potohar, Pakistan, Waqas Hameed, Inayat Ullah, Safia Janjua, Fakhar -I- Abbas, Afsar Mian
On Individual, Sex And Age Differentiation Of Indian House Crow (Corvus Splendens) Call: A Preliminary Study In Potohar, Pakistan, Waqas Hameed, Inayat Ullah, Safia Janjua, Fakhar -I- Abbas, Afsar Mian
Journal of Bioresource Management
Considering importance of acoustics studies in population biology, 500 calls of the Indian House Crow (Corvus splendens) were recorded in morning - mid-afternoon hours (January-February, 2009) from 23 sites of urban areas of Potahar (Punjab, Pakistan). Calls were recorded using Sony CFS 1030 S sound records (sampling rate = 48 KHz) and edited using Sound Analysis Pro (Version 1.02). software using FFT method rate 50%, data window 9.27 ms, advanced window 1.36 ms. Through editing of calls, we selected 60 (37 ♂♂, 17 ♀♀, 6 Juvenile ♂♂) good quality spectrograms for detailed analysis. Spectrograms were characterized by rapid frequency modulations …
Toxoplasma Gondii Rhoptry Kinase Rop16 Activates Stat3 And Stat6 Resulting In Cytokine Inhibition And Arginase-1-Dependent Growth Control, Barbara A. Butcher, Barbara A. Fox, Leah M. Rommereim, Sung Guk Kim, Kirk J. Maurer, Felix Yarovinsky, De'broski R. Herbert, David J. Bzik, Eric Y. Denkers
Toxoplasma Gondii Rhoptry Kinase Rop16 Activates Stat3 And Stat6 Resulting In Cytokine Inhibition And Arginase-1-Dependent Growth Control, Barbara A. Butcher, Barbara A. Fox, Leah M. Rommereim, Sung Guk Kim, Kirk J. Maurer, Felix Yarovinsky, De'broski R. Herbert, David J. Bzik, Eric Y. Denkers
Dartmouth Scholarship
The ROP16 kinase of Toxoplasma gondii is injected into the host cell cytosol where it activates signal transducer and activator of transcription (STAT)-3 and STAT6. Here, we generated a ROP16 deletion mutant on a Type I parasite strain background, as well as a control complementation mutant with restored ROP16 expression. We investigated the biological role of the ROP16 molecule during T. gondii infection. Infection of mouse bone marrow-derived macrophages with rop16-deleted (ΔROP16) parasites resulted in increased amounts of IL-12p40 production relative to the ROP16-positive RH parental strain. High level IL-12p40 production in ΔROP16 infection was dependent on the host …
Impaired Memory Cd8 T-Cell Responses Against An Immunodominant Retroviral Cryptic Epitope, Melanie R. Rutkowski, Cynthia A. Stevens, William R. Green
Impaired Memory Cd8 T-Cell Responses Against An Immunodominant Retroviral Cryptic Epitope, Melanie R. Rutkowski, Cynthia A. Stevens, William R. Green
Dartmouth Scholarship
The immunodominant cryptic epitope SYNTGRFPPL, encoded within open reading frame 2 of the LP-BM5 retroviral gag gene, is critical for protection against retroviral-induced pathogenesis. The goal of this study was to dissect the memory response against this unique immunodominant cryptic epitope. Unlike the protective acute effector population of SYNTGRFPPL-specific CD8 T cells, long-lived SYNTGRFPPL-specific CD8 T cells lacked the ability to protect susceptible mice infected with LP-BM5 retrovirus. Compared to memory CD8 T cells against a conventional epitope with similar MHC-I specificity, primed and restimulated using similar conditions, long-lived SYNTGRFPPL-specific CD8 T cells were impaired in their ability to recall …
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 …