Abstract:
:The bacterium Listeria monocytogenes causes meningoencephalitis in humans. In rodents, listeriosis is associated with granulomatous lesions in the liver and the spleen, but not with meningoencephalitis. Here, infant rats were infected intracisternally to generate experimental listeric meningoencephalitis. Dose-dependent effects of intracisternal inoculation with L. monocytogenes on survival and activity were noted; 10(4) L. monocytogenes organisms induced a self-limiting brain infection. Bacteria invaded the basal meninges, chorioid plexus and ependyme, spread to subependymal tissue and hippocampus, and disappeared by day 7. This was paralleled by recruitment and subsequent disappearance of macrophages expressing inducible nitric oxide synthase (iNOS) and nitrotyrosine accumulation, an indication of nitric oxide (NO.) production. Treatment with the spin-trapping agent alpha-phenyl-tert-butyl nitrone (PBN) dramatically increased mortality and led to bacterial numbers in the brain 2 orders of magnitude higher than in control animals. Treatment with the selective iNOS inhibitor L-N(6)-(1-iminoethyl)-lysine (L-NIL) increased mortality to a similar extent and led to 1 order of magnitude higher bacterial counts in the brain, compared with controls. The numbers of bacteria that spread to the spleen and liver did not significantly differ among L-NIL-treated, PBN-treated, and control animals. Thus, the infant rat brain is able to mobilize powerful antilisterial mechanisms, and both reactive oxygen and NO. contribute to Listeria growth control.
journal_name
Infect Immunjournal_title
Infection and immunityauthors
Remer KA,Jungi TW,Fatzer R,Täuber MG,Leib SLdoi
10.1128/IAI.69.6.4086-4093.2001keywords:
subject
Has Abstractpub_date
2001-06-01 00:00:00pages
4086-93issue
6eissn
0019-9567issn
1098-5522journal_volume
69pub_type
杂志文章abstract::The adherence of 58 nontypeable Haemophilus influenzae isolates obtained from patients with otitis media or chronic obstructive pulmonary disease (COPD) and obtained from the throats of healthy individuals to Chang and NCI-H292 epithelial cells was compared. Otitis media isolates, but not COPD isolates, adhered signif...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/iai.68.8.4658-4665.2000
更新日期:2000-08-01 00:00:00
abstract::Oral administration of polymyxin to specific-pathogen-free C3H/Law mice which with previously contaminated with gram-negative bacteria resulted in complete suppression of cecal gram-negative bacteria. Suppression of cecal gram-negative bacteria was accompanied by reduction of the cecal endotoxin concentration from 10 ...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.50.2.437-441.1985
更新日期:1985-11-01 00:00:00
abstract::A procedure is described for isolating a high-molecular-weight polysaccharide (PS) from the slime of Pseudomonas aeruginosa immunotype 1. The resultant material, obtained from the void volume of a Sephadex G-100 column, was composed of carbohydrate and water. No lipopolysaccharide (LPS), 2-keto-3-deoxyoctonoate, hepto...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.22.3.908-918.1978
更新日期:1978-12-01 00:00:00
abstract::Culture fluids after growth of Mycobacterium bovis BCG on Sauton medium contain actively secreted proteins and proteins released by bacterial lysis. BCG culture fluids and sonicates of Mycobacterium tuberculosis and Mycobacterium paratuberculosis were tested after separation by gel filtration and sodium dodecyl sulfat...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.66.1.289-296.1998
更新日期:1998-01-01 00:00:00
abstract::An immunomodulatory role of arthropod saliva has been well documented, but evidence for an effect on Plasmodium sp. infectiousness remains controversial. Mosquito saliva may orient the immune response toward a Th2 profile, thereby priming a Th2 response against subsequent antigens, including Plasmodium. Orientation to...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.06414-11
更新日期:2012-06-01 00:00:00
abstract::Previous research in this laboratory, using photoactivatable radioiodinated lipopolysaccharide derivatized with sulfosuccinimidyl-2-(p-azidosalicylamide)-1,3'-dithiopropionate (125I-ASD-LPS), has resulted in the identification of a specific LPS receptor with a molecular mass of approximately 73 kDa on murine lymphocyt...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.60.3.845-852.1992
更新日期:1992-03-01 00:00:00
abstract::NF-κB is a critical regulator of gene expression during severe infections. NF-κB comprises homo- and heterodimers of proteins from the Rel family. Among them, p50 and p65 have been clearly implicated in the pathophysiology of sepsis. In contrast, the role of cRel in sepsis is still controversial and has been poorly st...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.00021-11
更新日期:2011-05-01 00:00:00
abstract::Neisseria gonorrhoeae, the etiologic agent of gonorrhea, is frequently asymptomatic in women, often leading to chronic infections. One factor contributing to this may be biofilm formation. N. gonorrhoeae can form biofilms on glass and plastic surfaces. There is also evidence that biofilm formation may occur during nat...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.00036-09
更新日期:2009-09-01 00:00:00
abstract::The presence of lipopolysaccharide (LPS) in gram-negative bacterial repeats-in-toxin (RTX) toxin preparations, as well as the harsh conditions required to remove it, suggests that LPS may complex with RTX toxins. Concentrated culture supernatant (CCS) preparations of the RTX toxin Pasteurella haemolytica leukotoxin (L...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.67.6.2920-2927.1999
更新日期:1999-06-01 00:00:00
abstract::Neonates born to female guinea pigs of either a highly susceptible (C4D) or a resistant (Albany) strain, infected prior to or during pregnancy with a single dose of Treponema pallidum, showed in their sera from the first day of life immunoglobulin M (IgM) antibodies to T. pallidum, circulating immune complexes consist...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.60.1.271-277.1992
更新日期:1992-01-01 00:00:00
abstract::H(2)O(2) levels accumulated by Mycoplasma pneumoniae can be influenced by carbon source, different horse sera, yeast extract, thallium acetate, or growth in a simplified, dialyzed medium. Thus, increased levels of H(2)O(2) were detected by growth in glycerol, by omission of thallium acetate, and by the use of dialyzed...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.3.1.80-86.1971
更新日期:1971-01-01 00:00:00
abstract::A fibronectin (Fn)-binding adhesin of Staphylococcus aureus contains three tandem 37- or 38-amino-acid motifs (D1, D2, and D3), which function to bind Fn. Plasma from patients with S. aureus infections contain antibodies that preferentially recognize ligand induced binding sites in the D motifs and do not inhibit Fn b...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/iai.68.3.1156-1163.2000
更新日期:2000-03-01 00:00:00
abstract::Pseudomallei group Burkholderia species are facultative intracellular parasites that spread efficiently from cell to cell by a mechanism involving the fusion of adjacent cell membranes. Intercellular fusion requires the function of the cluster 5 type VI secretion system (T6SS-5) and its associated valine-glycine repea...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.01367-13
更新日期:2014-04-01 00:00:00
abstract::Four isolates of Staphylococcus aureus from patients with endocarditis and bacteremia were capable of secreting high-molecular-weight soluble peptidoglycans when grown in a minimal cell wall medium containing penicillin G. Vancomycin was not able to substitute for penicillin G in triggering this secretion. Secretion r...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.37.3.1112-1118.1982
更新日期:1982-09-01 00:00:00
abstract::DNA microarrays provide an opportunity to combine the principles of signature-tagged mutagenesis (STM) with microarray technology to identify potentially important bacterial virulence genes. The scope of DNA microarrays allows for less laborious screening on a much larger scale than possible by STM alone. We have adap...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.73.9.5438-5449.2005
更新日期:2005-09-01 00:00:00
abstract::Haemophilus ducreyi previously has been shown to inhibit the phagocytosis of both secondary targets and itself by certain cells in vitro. Wild-type H. ducreyi strain 35000HP contains two genes, lspA1 and lspA2, whose encoded protein products are predicted to be 456 and 543 kDa, respectively. An isogenic mutant of H. d...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/iai.71.10.5994-6003.2003
更新日期:2003-10-01 00:00:00
abstract::Serotype b-specific polysaccharide antigen (SPA) was extracted from whole cells of Actinobacillus actinomycetemcomitans Y4 by autoclaving and purified by chromatography on DEAE-Sephadex A-25 and Sephacryl S-300. SPA induced the release of monocyte and leukocyte chemotactic factors by human monocytes. Polymyxin B had a...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.64.7.2563-2570.1996
更新日期:1996-07-01 00:00:00
abstract::A nasal vaccine, consisting of outer membrane vesicles (OMVs) from group B Neisseria meningitidis, was given to 12 volunteers in the form of nose drops or nasal spray four times at weekly intervals, with a fifth dose 5 months later. Each nasal dose consisted of 250 microg of protein, equivalent to 10 times the intramu...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.66.4.1334-1341.1998
更新日期:1998-04-01 00:00:00
abstract::Malaria in pregnancy is associated with placental accumulation of Plasmodium falciparum-infected erythrocytes (IE) that adhere to chondroitin sulfate A (CSA). Adhesion is mediated by P. falciparum erythrocyte membrane protein 1 (PfEMP1), a variant parasite protein expressed on the surface of IE and encoded by var gene...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.73.5.2848-2856.2005
更新日期:2005-05-01 00:00:00
abstract::In general there is a poor correlation between serum lipopolysaccharide (LPS; the biologically active constituent of endotoxin) levels and mortality in septic patients. The objective of this study was to determine if chemical, structural, or biological differences among LPS from different clinical isolates of gram-neg...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/iai.68.4.1899-1904.2000
更新日期:2000-04-01 00:00:00
abstract::Understanding the regulation of human immune responses is critical for vaccine development and treating infectious diseases. We have previously shown that simultaneous engagement of the T cell receptor (TCR) and complement regulator CD46 on human CD4(+) T cells in the presence of interleukin-2 (IL-2) induces potent se...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.00513-10
更新日期:2010-12-01 00:00:00
abstract::The immunogenic and adjuvant properties of Brucella abortus and Escherichia coli lipopolysaccharides (LPSs) were studied in endotoxin-responsive, athymic, and euthymic BALB/c mice and in responsive C3H/HeAu mice and congenic nonresponsive C3H/HeJ mice. Consistent with previous reports, E. coli LPS did not stimulate si...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.46.1.74-80.1984
更新日期:1984-10-01 00:00:00
abstract::An enterotoxic factor isolated from cultures of Salmonella yielded reproducible results in the suckling mouse model in contrast to other animal models. The enterotoxin appears to possess properties similar to both the heat-stable and heat-labile enterotoxins of Escherichia coli. Preliminary results indicate that the t...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.11.1.14-22.1975
更新日期:1975-01-01 00:00:00
abstract::Bovine mastitis continues to be the most detrimental factor for profitable dairying. Recent research conducted within our laboratory has identified a genetic marker in the CXCR2 gene associated with mastitis susceptibility. The objective of the present study was to evaluate the migratory ability of neutrophils from co...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.73.8.4955-4959.2005
更新日期:2005-08-01 00:00:00
abstract::The Chagas' disease parasite Trypanosoma cruzi commonly infects humans through skin abrasions or mucosa from reduviid bug excreta. Yet most studies on animal models start with subcutaneous or intraperitoneal injections, a distant approximation of the skin abrasion route. We show here that atraumatic placement of T. cr...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.01434-08
更新日期:2009-04-01 00:00:00
abstract::Little is known about the underlying mechanisms that result in a sexually dimorphic response to Vibrio vulnificus endotoxic shock. V. vulnificus is a gram-negative bacterium, considered one of the most invasive and rapidly fatal human pathogens known. However, 85% of individuals that develop endotoxic shock from V. vu...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.69.10.6119-6122.2001
更新日期:2001-10-01 00:00:00
abstract::The immune mechanism by which hamsters acquire resistance to infection with Treponema pertenue, the causative agent of frambesia, or yaws, has not been elucidated. Serum or cells (spleen or lymph node) obtained from hamsters resistant to frambesial infection were transferred to normal syngenic recipients, who are subs...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.21.2.430-435.1978
更新日期:1978-08-01 00:00:00
abstract::Streptococcus pneumoniae is a major cause of pneumonia and meningitis. Airway colonization is a necessary precursor to disease, but little is known about how the bacteria establish and maintain colonization. Carbohydrates are required as a carbon source for pneumococcal growth and, therefore, for colonization. Free ca...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.00832-10
更新日期:2011-03-01 00:00:00
abstract::Borrelia burgdorferi, the causative agent of Lyme disease, has a complex genome consisting of a linear chromosome and up to 21 linear and circular plasmids. These plasmids encode numerous proteins critical to the spirochete's infectious cycle and many hypothetical proteins whose functions and requirements are unknown....
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.01059-09
更新日期:2010-06-01 00:00:00
abstract::A solid-phase radioimmunoassay method has been developed for the detection of rotavirus in the form of a purified antigen and in stool. The parameters of the radioimmunoassay were examined and optimized to give high sensitivity and same-day results. Compared with electron microscopy, the assay is up to 10 times as sen...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.16.2.439-444.1977
更新日期:1977-05-01 00:00:00