Macrophages in resistance to rickettsial infection: strains of mice susceptible to the lethal effects of Rickettsia akari show defective macrophage Rickettsicidal activity in vitro.

abstract：:Apical membrane antigen 1 (AMA1) is expressed on the surfaces of Plasmodium falciparum merozoites and is thought to play an important role in the invasion of erythrocytes by malaria parasites. To select for peptides that mimic conformational B-cell epitopes on AMA1, we screened a phage display library of >10(8) indivi...

journal_title：Infection and immunity

authors： Casey JL,Coley AM,Anders RF,Murphy VJ,Humberstone KS,Thomas AW,Foley M

更新日期：2004-02-01 00:00:00

abstract：:Streptococcus suis capsular type 2 is an important etiological agent of swine meningitis, and it is also a zoonotic agent. Since one hypothesis of the pathogenesis of S. suis infection is that bacteria enter the bloodstream and invade the meninges and other tissues in close association with mononuclear phagocytes, the...

journal_title：Infection and immunity

authors： Segura M,Gottschalk M

更新日期：2002-08-01 00:00:00

abstract：:Invasive aspergillosis is a major threat for patients suffering from chronic granulomatous disease (CGD). Although Aspergillus fumigatus is the most commonly encountered Aspergillus species, the presence of A. nidulans appears to be disproportionately high in CGD patients. The purpose of this study was to investigate ...

journal_title：Infection and immunity

authors： Henriet SS,Hermans PW,Verweij PE,Simonetti E,Holland SM,Sugui JA,Kwon-Chung KJ,Warris A

更新日期：2011-02-01 00:00:00

abstract：:Intrauterine infections lead to serious complications for mother and fetus, including preterm birth, maternal and fetal death, and neurological sequelae in the surviving offspring. Improving maternal and child heath is a global priority. Yet, the development of strategies to prevent and treat pregnancy-related disease...

journal_title：Infection and immunity

authors： Lowe DE,Robbins JR,Bakardjiev AI

更新日期：2018-05-22 00:00:00

abstract：:An escape variant of Borrelia burgdorferi, selected with a monoclonal antibody to OspB, expressed a truncated form of OspB, the result of point mutations in the ospB gene leading to a premature termination codon. A single amino acid position in the C terminus of OspB was critical for monoclonal antibody recognition. T...

journal_title：Infection and immunity

authors： Coleman JL,Rogers RC,Rosa PA,Benach JL

更新日期：1994-01-01 00:00:00

abstract：:The ability of Klebsiella pneumoniae strains to resist the bactericidal activity of serum was quantitated. The K. pneumoniae strains tested included mutants lacking the capsular polysaccharide and mutants having a modified lipopolysaccharide structure. The last mutants were obtained as phage-resistant mutants, and the...

journal_title：Infection and immunity

authors： Tomás JM,Benedí VJ,Ciurana B,Jofre J

更新日期：1986-10-01 00:00:00

abstract：:The concept of translational research, which aims to facilitate the application of basic scientific discoveries in clinical and community settings, is currently in vogue. While there are powerful forces driving this trend, support for translational research must be accompanied by a robust investment in basic science, ...

journal_title：Infection and immunity

authors： Fang FC,Casadevall A

更新日期：2010-02-01 00:00:00

abstract：:Trehalose 6,6'-dimycolate (TDM) plays important roles in the development of granulomatous inflammation during infection with Mycobacterium spp., Rhodococcus spp., etc. To reveal the augmenting effect of TDM on vascular endothelial growth factor (VEGF) production and neovascularization, we investigated murine granuloma...

journal_title：Infection and immunity

authors： Sakaguchi I,Ikeda N,Nakayama M,Kato Y,Yano I,Kaneda K

更新日期：2000-04-01 00:00:00

abstract：:Hypoferremia, the reduction of plasma transferrin iron levels during infection, has been shown to control Neisseria meningitidis infection in mice. The exact nature of the mechanism that regulates this response has been obscure. We have previously shown that hypoferremia does not result from an accelerated removal of ...

journal_title：Infection and immunity

authors： Letendre ED,Holbein BE

更新日期：1984-05-01 00:00:00

abstract：:The bacterial pathogen Burkholderia pseudomallei invades host cells, escapes from endocytic vesicles, multiplies intracellularly, and induces the formation of actin tails and membrane protrusions, leading to direct cell-to-cell spreading. This study was aimed at the identification of B. pseudomallei genes responsible ...

journal_title：Infection and immunity

authors： Pilatz S,Breitbach K,Hein N,Fehlhaber B,Schulze J,Brenneke B,Eberl L,Steinmetz I

更新日期：2006-06-01 00:00:00

abstract：:Toxoplasma gondii induces the expression of proinflammatory cytokines, reorganizes organelles, scavenges nutrients, and inhibits apoptosis in infected host cells. We used a cDNA microarray of 420 annotated porcine expressed sequence tags to analyze the molecular basis of these changes at eight time points over a 72-ho...

journal_title：Infection and immunity

authors： Okomo-Adhiambo M,Beattie C,Rink A

更新日期：2006-07-01 00:00:00

abstract：:The Pseudomonas aeruginosa quorum-sensing systems, las and rhl, control the production of numerous virulence factors. In this study, we have used the burned-mouse model to examine the contribution of quorum-sensing systems to the pathogenesis of P. aeruginosa infections in burn wounds. Different quorum-sensing mutants...

journal_title：Infection and immunity

authors： Rumbaugh KP,Griswold JA,Iglewski BH,Hamood AN

更新日期：1999-11-01 00:00:00

abstract：:The Th-2 response to microfilariae of Brugia malayi in BALB/c mice is associated with peritoneal eosinophilia. These eosinophils had an activated hypodense phenotype in vivo and expressed high levels of the class II major histocompatibility complex (MHC). Interleukin 4 up-regulated the class II MHC, whereas gamma inte...

journal_title：Infection and immunity

authors： Mawhorter SD,Pearlman E,Kazura JW,Boom WH

更新日期：1993-12-01 00:00:00

abstract：:Expression of virulence determinants by Bordetella pertussis, the primary etiological agent of whooping cough, is regulated by the BvgAS two-component regulatory system. The role of a second two-component regulatory system, encoded by risAS, in this process is not defined. Here, we show that mutation of B. pertussis r...

journal_title：Infection and immunity

authors： Stenson TH,Allen AG,Al-Meer JA,Maskell D,Peppler MS

更新日期：2005-09-01 00:00:00

abstract：:Mycobacterium tuberculosis, the primary etiologic agent of tuberculosis, is the world's leading cause of death from a single infectious agent, and new vaccines and drugs to combat it are urgently needed. The major extracellular proteins of M. tuberculosis, which are released into its phagosome in macrophages, its host...

journal_title：Infection and immunity

authors： Harth G,Lee BY,Horwitz MA

更新日期：1997-06-01 00:00:00

abstract：:A clinically isolated strain of polymorphonuclear leukocyte (PMN)-resistant Pseudomonas was found to produce an extracellular substance (PMN inhibitor) that inhibits the phagocytic and killing activities of PMN. The PMN inhibitor was purified from culture filtrates by precipitation with (NH4)2SO4 and chromatography on...

journal_title：Infection and immunity

authors： Nonoyama S,Kojo H,Mine Y,Nishida M,Goto S,Kuwahara S

更新日期：1979-05-01 00:00:00

abstract：:The antigenicity of Erysipelothrix rhusiopathiae T28 (serotype 2) was investigated. Antigens were solubilized from the cell surface with detergents. By means of sodium dodecyl sulfate-polyacrylamide gel electrophoresis and immunoblotting it was shown that the molecular weight of the main antigenic component--a nonprot...

journal_title：Infection and immunity

authors： Lachmann PG,Deicher H

更新日期：1986-06-01 00:00:00

abstract：:Vaccine adjuvants exert critical and unique influences on the quality of immune responses induced during active immunizations. We investigated the mechanisms of action of immunological adjuvants in terms of their requirements for cytokine-mediated pathways for adjuvanticity. Antibody responses potentiated by several a...

journal_title：Infection and immunity

authors： Hui GS,Hashimoto CN

更新日期：1998-11-01 00:00:00

abstract：:When immunocompetent mice are inoculated with Borrelia burgdorferi, they develop acute arthritis and carditis that undergo spontaneous regression despite the persistence of infection. Specific T- and/or B-cell immunity appears to be necessary for resolution of disease manifestations. Humoral immune responses to B. bur...

journal_title：Infection and immunity

authors： Bockenstedt LK,Barthold S,Deponte K,Marcantonio N,Kantor FS

更新日期：1993-05-01 00:00:00

abstract：:Fusobacterium nucleatum is closely associated with human periodontal diseases and may also be a causative agent in other infections, such as pericarditis, septic arthritis, and abscesses of tonsils and liver. Initiation and outcome of infective diseases depend critically on the host cell signaling system altered by th...

journal_title：Infection and immunity

authors： Uitto VJ,Baillie D,Wu Q,Gendron R,Grenier D,Putnins EE,Kanervo A,Firth JD

更新日期：2005-02-01 00:00:00

abstract：:In this study, cytokine patterns produced by CD4(+) T cells isolated from antrum or corpus gastral biopsy specimens of 10 patients with Helicobacter pylori-positive gastritis were compared. To this end, expression of intracellular cytokines (interleukin-4 [IL-4] and gamma interferon) and of CD4 was assessed by flow cy...

journal_title：Infection and immunity

authors： Sommer F,Faller G,Konturek P,Kirchner T,Hahn EG,Zeus J,Röllinghoff M,Lohoff M

更新日期：1998-11-01 00:00:00

abstract：:Protective immunity to Plasmodium falciparum malaria acquired after natural exposure is largely antibody mediated. IgG-specific P. falciparum EMP1 (PfEMP1) proteins on the infected erythrocyte surface are particularly important. The transient antibody responses and the slowly acquired protective immunity probably refl...

journal_title：Infection and immunity

authors： Ampomah P,Stevenson L,Ofori MF,Barfod L,Hviid L

更新日期：2014-05-01 00:00:00

abstract：:Intestinal mucus is postulated to play a role in preventing colonization of the gastrointestinal tract by microbial pathogens. To evaluate the ability of both crude mucus and purified mucin, a glycoprotein of goblet cell origin, to inhibit mucosal adherence of enteric pathogens, we examined whether mucus and mucin der...

journal_title：Infection and immunity

authors： Drumm B,Roberton AM,Sherman PM

更新日期：1988-09-01 00:00:00

abstract：:The unique permissiveness of A/J mouse macrophages for replication of Legionella pneumophila is caused by a deficiency in the Nod-like receptor (NLR) protein and intracellular sensor for L. pneumophila flagellin (Naip5). The signaling pathways and proteins activated by Naip5 sensing in macrophages were investigated. T...

journal_title：Infection and immunity

authors： Fortier A,Doiron K,Saleh M,Grinstein S,Gros P

更新日期：2009-11-01 00:00:00

abstract：:The virulence and fitness in vivo of the major human pathogen Staphylococcus aureus are associated with a cell-to-cell signaling mechanism known as quorum sensing (QS). QS coordinates the production of virulence factors via the production and sensing of autoinducing peptide (AIP) signal molecules by the agr locus. Her...

journal_title：Infection and immunity

authors： Pollitt EJ,West SA,Crusz SA,Burton-Chellew MN,Diggle SP

更新日期：2014-03-01 00:00:00

abstract：:Passive transfer of antibody may be useful for preexposure prophylaxis against biological agents used as weapons of terror, such as Bacillus anthracis. Studies were performed to evaluate the ability of anthrax antiprotective antigen (anti-PA) and antilethal factor (anti-LF) neutralizing monoclonal antibodies (mAbs) to...

journal_title：Infection and immunity

authors： Staats HF,Alam SM,Scearce RM,Kirwan SM,Zhang JX,Gwinn WM,Haynes BF

更新日期：2007-11-01 00:00:00

abstract：:The serotype-specific polysaccharide of Streptococcus mutans AHT (serotype a) was shown to be loosely associated with the cell surface of this organism. The antigen was extracted from whole cells by boiling in sodium acetate buffer, pH 4.0, for 10 min. The purified product was found to be a diheteroglycan of galactose...

journal_title：Infection and immunity

authors： Craig RA,Riege DH,Bleiweis AS

更新日期：1979-12-01 00:00:00

abstract：:Escherichia coli strain RDEC-1 causes a diarrheagenic infection in rabbits with AF/R1 fimbriae, which have been identified as an important colonization factor in RDEC-1 adherence leading to disease. The AF/R1-mediated RDEC-1 adherence model has been used as a model systems for E. coli diarrheal diseases. In this study...

journal_title：Infection and immunity

authors： Ryu H,Kim YS,Grange PA,Cassels FJ

更新日期：2001-02-01 00:00:00

abstract：:A soluble hemagglutinin/protease produced by Vibrio cholerae, which has previously been shown to hydrolyze fibronectin and ovomucin and to cleave lactoferrin and the A subunit of the heat-labile enterotoxin of Escherichia coli, appears to be a zinc metalloendopeptidase. Both its hemagglutinative and protease functions...

journal_title：Infection and immunity

authors： Booth BA,Boesman-Finkelstein M,Finkelstein RA

更新日期：1983-11-01 00:00:00

abstract：:The mechanism by which capsular polysaccharides inhibit phagocytosis is not clearly understood. We investigated the association between a negative surface charge and inhibition of phagocytosis by the capsular polysaccharide of Cryptococcus neoformans. A two-polymer aqueous-phase system containing phosphate ions was us...

journal_title：Infection and immunity

authors： Kozel TR,Reiss E,Cherniak R

更新日期：1980-08-01 00:00:00