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Articles 91 - 103 of 103
Full-Text Articles in Virus Diseases
Human Cytomegalovirus Us28: A Functionally Selective Chemokine Binding Receptor, Jennifer Totonchy, Jay A. Nelson, Daniel N. Streblow
Human Cytomegalovirus Us28: A Functionally Selective Chemokine Binding Receptor, Jennifer Totonchy, Jay A. Nelson, Daniel N. Streblow
Pharmacy Faculty Articles and Research
The Human Cytomegalovirus (HCMV)-encoded chemokine receptor US28 is the most well-characterized of the four chemokine receptor-like molecules found in the HCMV genome. US28 been studied as an important virulence factor for HCMV-mediated vascular disease and, more recently, in models of HCMV-associated malignancy. US28 is a rare multi-chemokine family binding receptor with the ability to bind ligands from two distinct chemokine classes. Ligand binding to US28 activates cell-type and ligand-specific signaling pathways leading to cellular migration, an example receptor functional selectivity. Additionally, US28 has been demonstrated to constitutively activate PLC and NFkB. Understanding the structure/function relationships between US28, its ligands and …
Rat Cytomegalovirus Infection Depletes Mhc Ii In Bone Marrow Derived Dendritic Cells, Carmen C. Baca Jones, Craig N. Kreklywich, Ilhem Messaoudi, Jennifer Totonchy, Erin Mccartney, Susan L. Orloff, Jay A. Nelson, Daniel N. Streblow
Rat Cytomegalovirus Infection Depletes Mhc Ii In Bone Marrow Derived Dendritic Cells, Carmen C. Baca Jones, Craig N. Kreklywich, Ilhem Messaoudi, Jennifer Totonchy, Erin Mccartney, Susan L. Orloff, Jay A. Nelson, Daniel N. Streblow
Pharmacy Faculty Articles and Research
While cytomegalovirus (CMV) infects and replicates in a multitude of cell types, the ability of the virus to replicate in antigen presenting cells (APCs) is believed to play a critical role in the viral dissemination and latency. CMV infection of APCs and manipulation of their function is an important area of investigation. CMV down regulation of MHC II is reportedly mediated by the HCMV proteins US2, US3, UL83, UL111a (vIL10) or through the induction of cellular IL10. In this study, we demonstrate that rat CMV (RCMV) significantly reduces MHC II expression by mechanisms that do not involve orthologues of the …
Differential Ligand Binding To A Human Cytomegalovirus Chemokine Receptor Determines Cell Type-Specific Motility, Jennifer Totonchy, Ryan Melnychuk, Patricia P. Smith, Joshua Powell, Laurel Hall, Victor R. Defilippis, Klaus Fruh, Martine Smit, David D. Schlaepfer, Jay A. Nelson, Daniel N. Streblow
Differential Ligand Binding To A Human Cytomegalovirus Chemokine Receptor Determines Cell Type-Specific Motility, Jennifer Totonchy, Ryan Melnychuk, Patricia P. Smith, Joshua Powell, Laurel Hall, Victor R. Defilippis, Klaus Fruh, Martine Smit, David D. Schlaepfer, Jay A. Nelson, Daniel N. Streblow
Pharmacy Faculty Articles and Research
While most chemokine receptors fail to cross the chemokine class boundary with respect to the ligands that they bind, the human cytomegalovirus (HCMV)-encoded chemokine receptor US28 binds multiple CC-chemokines and the CX3Cchemokine Fractalkine. US28 binding to CC-chemokines is both necessary and sufficient to induce vascular smooth muscle cell (SMC) migration in response to HCMV infection. However, the function of Fractalkine binding to US28 is unknown. In this report, we demonstrate that Fractalkine binding to US28 not only induces migration of macrophages but also acts to inhibit RANTES-mediated SMC migration. Similarly, RANTES inhibits Fractalkine-mediated US28 migration in macrophages. While US28 binding …
Helical Peptides Derived From Lactoferrin Bind Hepatitis C Virus Envelope Protein E2, Reem Beleid, Donna Douglas, Norman Kneteman, Kamaljit Kaur
Helical Peptides Derived From Lactoferrin Bind Hepatitis C Virus Envelope Protein E2, Reem Beleid, Donna Douglas, Norman Kneteman, Kamaljit Kaur
Pharmacy Faculty Articles and Research
Hepatitis C virus is a major cause of chronic hepatitis, liver cirrhosis, and hepatocellular carcinoma infecting more than 170 million people. Hepatitis C virus envelope 2 glycoprotein (E2) binds several cell‐surface molecules that act as receptor candidates mediating hepatitis C virus entry into hepatocytes. Peptides derived from human lactoferrin have been shown to bind hepatitis C virus‐E2 protein thereby preventing hepatitis C virus entry in cultured hepatocytes. In this study, starting from a 33‐residue human lactoferrin‐derived peptide, a number of biotin‐linked α‐peptides were synthesized and investigated for their E2 protein binding activity. E2 protein from hepatitis C virus genotype 1b …
Immunization Update, Karl M. Hess, Jeffery A. Goad
Immunization Update, Karl M. Hess, Jeffery A. Goad
Pharmacy Faculty Articles and Research
"Immunization represents a very effective primary prevention strategy to curb the rate of vaccine preventable diseases...Pharmacists can play a leading role in vaccination by serving as an advocate, facilitator, and active immunizer. As an advocate, pharmacists provide vaccine education while motivating people to get immunized. As a facilitator, pharmacy’s can host other groups, such as the visiting nurses association, to come into the pharmacy and vaccinate. As an active immunizer, however, pharmacists serve their greatest role by giving immunizations to adolescents and adults."
Cost Prevention Of Hiv, Jerika Lam
Cost Prevention Of Hiv, Jerika Lam
Pharmacy Faculty Articles and Research
"Since the introduction of highly active antiretroviral therapy (HAART) in the late 1990s, management of patients with human immunodeficiency virus (HIV) infection has improved where they are living longer and with fewer incidences of opportunistic illnesses. Furthermore, significant progress has been made in the understanding of the disease, the ability to quantify viral load and correlate with clinical outcomes, genotypic and phenotypic resistance assays designed to assess viral susceptibility, and a heightened awareness and appreciation of the importance of treatment adherence to ensure virologic suppression.' In spite of the benefits that HIV-infected patients may have acquired in terms of more …
The Science Of Prevention Strategies, Rachel Abrishami, Jeffery A. Goad
The Science Of Prevention Strategies, Rachel Abrishami, Jeffery A. Goad
Pharmacy Faculty Articles and Research
"From newborn screening for Phenylkentonurea (PKU) and the birth dose of Hepatitis B vaccine to prostate and breast cancer screening and pneumococcal immunization for older adults, the science of health maintenance is multi-tiered and spans the lifetime of an individual. Primary, secondary, and tertiary prevention strategies are used in concert with each other to enable healthcare professionals and their patients to sustain and improve the quality of life."
Mouse Cytomegalovirus M33 Is Necessary And Sufficient In Virus-Induced Vascular Smooth Muscle Cell Migration, Ryan Melnychuk, Patsy Smith, Craig N. Kreklywich, Franziska Ruchti, Jennifer Totonchy, Laurel Hall, Lambert Loh, Jay A. Nelson, Susan L. Orloff, Daniel N. Streblow
Mouse Cytomegalovirus M33 Is Necessary And Sufficient In Virus-Induced Vascular Smooth Muscle Cell Migration, Ryan Melnychuk, Patsy Smith, Craig N. Kreklywich, Franziska Ruchti, Jennifer Totonchy, Laurel Hall, Lambert Loh, Jay A. Nelson, Susan L. Orloff, Daniel N. Streblow
Pharmacy Faculty Articles and Research
Mouse cytomegalovirus (MCMV) encodes two potential seven-transmembrane-spanning proteins with homologies to cellular chemokine receptors, M33 and M78. While these virus-encoded chemokine receptors are necessary for the in vivo pathogenesis of MCMV, the function of these proteins is unknown. Since vascular smooth muscle cell (SMC) migration is of critical importance for the development of atherosclerosis and other vascular diseases, the ability of M33 to promote SMC motility was assessed. Similar to human CMV, MCMV induced the migration of mouse aortic SMCs but not mouse fibroblasts. To demonstrate whether M33 was required for MCMV-induced SMC migration, we employed interfering-RNA technology to specifically …
Human Cytomegalovirus Chemokine Receptor Us28-Induced Smooth Muscle Cell Migration Is Mediated By Focal Adhesion Kinase And Src, Daniel N. Streblow, Jennifer Totonchy, Patsy Smith, Ryan Melnychuk, Laurel Hall, Dora Pancheva, Martine Smit, Paola Casarosa, David D. Schlaepfer, Jay A. Nelson
Human Cytomegalovirus Chemokine Receptor Us28-Induced Smooth Muscle Cell Migration Is Mediated By Focal Adhesion Kinase And Src, Daniel N. Streblow, Jennifer Totonchy, Patsy Smith, Ryan Melnychuk, Laurel Hall, Dora Pancheva, Martine Smit, Paola Casarosa, David D. Schlaepfer, Jay A. Nelson
Pharmacy Faculty Articles and Research
The human cytomegalovirus-encoded chemokine receptor US28 induces arterial smooth muscle cell (SMC) migration; however, the underlying mechanisms involved in this process are unclear. We have previously shown that US28-mediated SMC migration occurs by a ligand-dependent process that is sensitive to proteintyrosine kinase inhibitors. We demonstrate here that US28 signals through the non-receptor protein-tyrosine kinases Src and focal adhesion kinase (FAK) and that this activity is necessary for US28-mediated SMC migration. In the presence of RANTES (regulated on activation normal T cell expressed and secreted), US28 stimulates the production of a FAK Src kinase complex. Interestingly, Src co-immunoprecipitates with US28 in …
Hemorrhagic Fever Viruses, Jeffery A. Goad, J Nguyen
Hemorrhagic Fever Viruses, Jeffery A. Goad, J Nguyen
Pharmacy Faculty Articles and Research
Viral hemorrhagic fever (VHF) viruses are diverse and include arenaviruses, bunyaviruses, filoviruses, and flaviviruses. Lassa fever, South American hemorrhagic fever (HF), Rift Valley HF, Crimean-Congo HF, Ebola, Marburg, yellow fever, and dengue fever are well known examples of the hemorrhagic fever viruses. They are often difficult to diagnose and treat resulting in significant morbidity and mortality. Transmission varies from vector borne to person-to-person. The common clinical presentation includes fever, myalgia, microvascular damage, and hemorrahage as well as a history of travel to the tropics. If VHF is suspected, strict infection control procedures must be implemented to prevent the spread of …
The Common Cold: What Pharmacists Need To Know, Peggy Han, Peggy Mcmillan, Jeffery A. Goad
The Common Cold: What Pharmacists Need To Know, Peggy Han, Peggy Mcmillan, Jeffery A. Goad
Pharmacy Faculty Articles and Research
A primer on the common cold for pharmacists, including its causes and pathophysiology and how to assess and treat patients.
In Vitro Anti-Hepatitis B Virus Activities Of 5’-O-Myristoyl Analogue Derivatives Of 3’-Fluoro-2’,3’-Dideoxythymidine (Flt) And 3’-Azido-2’,3’- Dideoxythymidine (Azt), Keykavous Parang, Leonard I. Wiebe, Edward E. Knaus, Jyy-Shiang Huang, David L. Tyrrell
In Vitro Anti-Hepatitis B Virus Activities Of 5’-O-Myristoyl Analogue Derivatives Of 3’-Fluoro-2’,3’-Dideoxythymidine (Flt) And 3’-Azido-2’,3’- Dideoxythymidine (Azt), Keykavous Parang, Leonard I. Wiebe, Edward E. Knaus, Jyy-Shiang Huang, David L. Tyrrell
Pharmacy Faculty Articles and Research
The objective of this study was to evaluate a dual action prodrug concept wherein an unnatural myristic acid analogue is coupled via an ester moiety to the 5’-position of FLT or AZT. Subsequent intracellular cleavage of the prodrug ester would simultaneously release FLT or AZT that could inhibit reverse transcriptase (RT), and the myristic acid analogue that could inhibit myristoyl- CoA:protein N-myristoyltransferase (NMT). Methods: Cytotoxicity (2.2.15 cell culture), and antihepatitis B activity of 5’-O-myristoyl analogue prodrug derivatives of FLT and AZT (2-8) were evaluated in vitro using human liver hepatitis B virus (HBV) producing 2.2.15 cell lines. Results: The 5’- …
Phosphorylation Of The Rex Protein Of Human T-Cell Leukemia Virus Type 1, Yoshifumi Adachi, Terry D. Copeland, Chiaki Takahashi, Tetsuya Nosaka, Aftab Ahmed, Stephen Oroszlan, Masakazu Hatanaka
Phosphorylation Of The Rex Protein Of Human T-Cell Leukemia Virus Type 1, Yoshifumi Adachi, Terry D. Copeland, Chiaki Takahashi, Tetsuya Nosaka, Aftab Ahmed, Stephen Oroszlan, Masakazu Hatanaka
Pharmacy Faculty Articles and Research
Rex protein, the posttranscriptional regulator of human T-cell leukemia virus type I (HTLV-I), is required for the control of viral structural protein expression and virus replication. Rex is a phosphoprotein found predominantly in the cell nucleolus, whose function is thought to be regulated by its nucleolar localization and phosphorylation. Therefore, we investigated the in vivo phosphorylation of Rex protein in more detail. Phosphorylation of Rex occurred in all HTLV-I-infected cell lines examined in vivo, primarily at serine residues and to a very small extent at threonine residues. Treatment of cells with 12-O-tetradecanoylphorbol-13-acetate (TPA) led to significant but transient enhancement of …