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Articles 1 - 6 of 6
Full-Text Articles in Medicine and Health Sciences
A Vibrio Cholerae Classical Tcpa Amino Acid Sequence Induces Protective Antibody That Binds An Area Hypothesized To Be Important For Toxin-Coregulated Pilus Structure, Ronald K. Taylor, Thomas J. Kirn, Michael D. Meeks, Terri K. Wade, William F. Wade
A Vibrio Cholerae Classical Tcpa Amino Acid Sequence Induces Protective Antibody That Binds An Area Hypothesized To Be Important For Toxin-Coregulated Pilus Structure, Ronald K. Taylor, Thomas J. Kirn, Michael D. Meeks, Terri K. Wade, William F. Wade
Dartmouth Scholarship
Vibrio cholerae is a gram-negative bacterium that has been associated with cholera pandemics since the early 1800s. Whole-cell, killed, and live-attenuated oral cholera vaccines are in use. We and others have focused on the development of a subunit cholera vaccine that features standardized epitopes from various V. cholerae macromolecules that are known to induce protective antibody responses. TcpA protein is assembled into toxin-coregulated pilus (TCP), a type IVb pilus required for V. cholerae colonization, and thus is a strong candidate for a cholera subunit vaccine. Polypeptides (24 to 26 amino acids) in TcpA that can induce protective antibody responses have …
The Major Subunit Of The Toxin-Coregulated Pilus Tcpa Induces Mucosal And Systemic Immunoglobulin A Immune Responses In Patients With Cholera Caused By Vibrio Cholerae O1 And O139, Muhammad Asaduzzaman, Edward T. Ryan, Manohar John, Long Hang, Ashraful I. Khan, A. S. G. Faruque, Ronald K. Taylor
The Major Subunit Of The Toxin-Coregulated Pilus Tcpa Induces Mucosal And Systemic Immunoglobulin A Immune Responses In Patients With Cholera Caused By Vibrio Cholerae O1 And O139, Muhammad Asaduzzaman, Edward T. Ryan, Manohar John, Long Hang, Ashraful I. Khan, A. S. G. Faruque, Ronald K. Taylor
Dartmouth Scholarship
Diarrhea caused by Vibrio cholerae is known to give long-lasting protection against subsequent life-threatening illness. The serum vibriocidal antibody response has been well studied and has been shown to correlate with protection. However, this systemic antibody response may be a surrogate marker for mucosal immune responses to key colonization factors of this organism, such as the toxin-coregulated pilus (TCP) and other factors. Information regarding immune responses to TCP, particularly mucosal immune responses, is lacking, particularly for patients infected with the El Tor biotype of V. cholerae O1 or V. cholerae O139 since highly purified TcpA from these strains has not …
A Novel Triterpenoid Induces Transforming Growth Factor Β Production By Intraepithelial Lymphocytes To Prevent Ileitis, Laurie A. Minns, Dominique Buzoni-Gatel, Kenneth H. Ely, Nicolas Rachinel, Souphalone Luangsay, Lloyd H. Kasper
A Novel Triterpenoid Induces Transforming Growth Factor Β Production By Intraepithelial Lymphocytes To Prevent Ileitis, Laurie A. Minns, Dominique Buzoni-Gatel, Kenneth H. Ely, Nicolas Rachinel, Souphalone Luangsay, Lloyd H. Kasper
Dartmouth Scholarship
The loss of homeostasis is a hallmark of inflammatory bowel disease. Oral infection of susceptible mice with Toxoplasma gondii results in an acute lethal ileitis characterized by increased interferon γ, tumor necrosis factor α, and inducible nitric oxide synthase; homeostasis results from transforming growth factor β production by intraepithelial lymphocytes. The synthetic oleanane triterpenoid 2-cyano-3,12-dioxooleana-1,9-dien-28-oic acid (CDDO) is a potent anti-inflammatory molecule previously shown in vitro to suppress the de novo synthesis of inducible nitric oxide synthase and to induce the transcription and activation of genes from the transforming growth factor β signaling pathway. We evaluated the immune response in …
Anemia And Blood Transfusion In The Critically Ill Patient: Role Of Erythropoietin, Howard L. Corwin
Anemia And Blood Transfusion In The Critically Ill Patient: Role Of Erythropoietin, Howard L. Corwin
Dartmouth Scholarship
Critically ill patients receive an extraordinarily large number of blood transfusions. Between 40% and 50% of all patients admitted to intensive care units receive at least 1 red blood cell (RBC) unit during their stay, and the average is close to 5 RBC units. RBC transfusion is not risk free. There is little evidence that 'routine' transfusion of stored allogeneic RBCs is beneficial to critically ill patients. The efficacy of perioperative recombinant human erythropoietin (rHuEPO) has been n demonstrated in a variety of elective surgical settings. Similarly, in critically ill patients with multiple organ failure, rHuEPO therapy will also stimulate …
Impacts Of Sara And Agr In Staphylococcus Aureus Strain Newman On Fibronectin-Binding Protein A Gene Expression And Fibronectin Adherence Capacity In Vitro And In Experimental Infective Endocarditis, Yan-Qiong Xiong, Arnold S. Bayer, Michael R. Yeaman, Willem Van Wamel, Adhar C. Manna, Ambrose L. Cheung
Impacts Of Sara And Agr In Staphylococcus Aureus Strain Newman On Fibronectin-Binding Protein A Gene Expression And Fibronectin Adherence Capacity In Vitro And In Experimental Infective Endocarditis, Yan-Qiong Xiong, Arnold S. Bayer, Michael R. Yeaman, Willem Van Wamel, Adhar C. Manna, Ambrose L. Cheung
Dartmouth Scholarship
We investigated the impacts of sarA and agr on fnbA expression and fibronectin-binding capacity in Staphylococcus aureus in vitro and in experimental endocarditis. Although sarA up-regulated and agr down-regulated both fnbA expression and fibronectin binding in vitro and in vivo, fnbA expression was positively regulated in the absence of both global regulators. Thus, additional regulatory loci contribute to fnbA regulation and fibronectin-binding capacities in S. aureus.
Bcma Is Essential For The Survival Of Long-Lived Bone Marrow Plasma Cells, Brian P. O'Connor, Vanitha S. Raman, Loren D. Erickson, W. James Cook, Lehn K. Weaver, Cory Ahonen, Ling-Li Lin, George Mantchev, Richard J. Bram, Randolph J. Noelle
Bcma Is Essential For The Survival Of Long-Lived Bone Marrow Plasma Cells, Brian P. O'Connor, Vanitha S. Raman, Loren D. Erickson, W. James Cook, Lehn K. Weaver, Cory Ahonen, Ling-Li Lin, George Mantchev, Richard J. Bram, Randolph J. Noelle
Dartmouth Scholarship
Long-lived humoral immunity is manifested by the ability of bone marrow plasma cells (PCs) to survive for extended periods of time. Recent studies have underscored the importance of BLyS and APRIL as factors that can support the survival of B lineage lymphocytes. We show that BLyS can sustain PC survival in vitro, and this survival can be further enhanced by inter- leukin 6. Selective up-regulation of Mcl-1 in PCs by BLyS suggests that this -apoptotic gene product may play an important role in PC survival. Blockade of BLyS, via transmembrane activator and cyclophilin ligand interactor–immunoglobulin treatment, inhibited PC survival in …