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Antibody responses to a spore carbohydrate antigen as a marker of nonfatal inhalation anthrax in rhesus macaques.
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The Bacillus anthracis exosporium protein BclA contains an O-linked antigenic tetrasaccharide whose terminal sugar is known as anthrose (J. M. Daubenspeck et al., J. Biol. Chem. 279:30945-30953, 2004). We hypothesized that serologic responses to anthrose may have diagnostic value in confirming
Recombinant HSA-CMG2 Is a Promising Anthrax Toxin Inhibitor.
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Anthrax toxin is the major virulence factor produced by Bacillus anthracis. Protective antigen (PA) is the key component of the toxin and has been confirmed as the main target for the development of toxin inhibitors. The inhibition of the binding of PA to its receptor, capillary morphogenesis
Clinical features that discriminate inhalational anthrax from other acute respiratory illnesses.
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Inhalational anthrax (IA) is a rapidly progressive disease that frequently results in sepsis and death, and prompt recognition is critical. To distinguish IA from other causes of acute respiratory illness, patients who had IA were compared with patients in an ambulatory clinic who had influenza-like
Square wave voltammetric detection of Anthrax utilizing a peptide for selective recognition of a protein biomarker.
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A short chain peptide (16mer) has been successfully utilized for the selective electrochemical detection of the protein biomarker, protective antigen (PA), for the diagnosis of Anthrax. The major motivation of using a peptide instead of an antibody for the development of a biosensor is that there
Anthrax lethal toxin induces endothelial barrier dysfunction.
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Hemorrhage and pleural effusion are prominent pathological features of systemic anthrax infection. We examined the effect of anthrax lethal toxin (LT), a major virulence factor of Bacillus anthracis, on the barrier function of primary human lung microvascular endothelial cells. We also examined the
Sensitive detection of an anthrax biomarker using a glassy carbon electrode with a consecutively immobilized layer of polyaniline/carbon nanotube/peptide.
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Sensitivity of Anthrax protective antigen (PA) detection has been improved by directly immobilizing a PA-specific peptide onto a multi-wall carbon nanotube (MWCNT). The MWCNT was covalently immobilized onto a polyaniline (PANI) electrode, which was prepared via electropolymerization of the aniline
Anthrax capsule vaccine protects against experimental infection.
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Efficacy of a poly-gamma-D-glutamic acid anthrax capsule vaccine was assessed in a mouse model of infection. Capsule by itself was protective against lethal challenge with a toxin(-), capsule(+) Bacillus anthracis strain. Conjugation of capsule to bovine serum albumin resulted in enhanced IgG
Anthrax lethal toxin-mediated disruption of endothelial VE-cadherin is attenuated by inhibition of the Rho-associated kinase pathway.
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Systemic anthrax disease is characterized by vascular leakage pathologies. We previously reported that anthrax lethal toxin (LT) induces human endothelial barrier dysfunction in a cell death-independent manner with actin stress fiber formation and disruption of adherens junctions (AJs). In the
Inhibition of anthrax lethal factor by ssDNA aptamers.
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Anthrax is caused by Bacillus anthracis, a bacterium that is able to secrete the toxins protective antigen, edema factor and lethal factor. Due to the high level of secretion from the bacteria and its severe virulence, lethal factor (LF) has been sought as a biomarker for detecting bacterial
Nano aptasensor for protective antigen toxin of anthrax.
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We demonstrate a highly sensitive nano aptasensor for anthrax toxin through the detection of its polypeptide entity, protective antigen (PA toxin) using a PA toxin ssDNA aptamer functionalized single-walled carbon nanotubes (SWNTs) device. The aptamer was developed in-house by capillary
Screening and characterization of high-affinity ssDNA aptamers against anthrax protective antigen.
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The protective antigen (PA) of Bacillus anthracis is a secreted protein that functions as a critical virulence factor. Protective antigen has been selected as a biomarker in detecting bacterial infection. The in vitro selection method, systematic evolution of ligands by exponential enrichment
Strong antibody responses induced by protein antigens conjugated onto the surface of lecithin-based nanoparticles.
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An accumulation of research over the years has demonstrated the utility of nanoparticles as antigen carriers with adjuvant activity. Herein we defined the adjuvanticity of a novel lecithin-based nanoparticle engineered from emulsions. The nanoparticles were spheres of around 200nm. Model protein
Bacillus anthracis-derived edema toxin (ET) counter-regulates movement of neutrophils and macromolecules through the endothelial paracellular pathway.
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BACKGROUND
A common finding amongst patients with inhalational anthrax is a paucity of polymorphonuclear leukocytes (PMNs) in infected tissues in the face of abundant circulating PMNs. A major virulence determinant of anthrax is edema toxin (ET), which is formed by the combination of two proteins
Protective antigen detection using horizontally stacked hexagonal ZnO platelets.
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Anthrax toxin detection before bacteremia, when toxin concentration is low, improves the chances of efficient treatment and cure. We present a novel technique for ultrasensitive detection of a protective antigen (PA(83)) of anthrax using an array of zinc oxide nanorods in conjunction with a
Low-level detection of a bacillus anthracis simulant using Love-wave biosensors on 36 degrees YX LiTaO3.
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We present an acoustic Love-wave biosensor for detection of the Bacillus anthracis simulant, Bacillus thuringiensis at or below inhalational infectious levels. The present work is an experimental study of 36 degrees YX cut LiTaO3 based Love-wave devices for detection of pathogenic spores in aqueous
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