Abstract:
:Pseudomonas aeruginosa exotoxin A (PA), a potent protein synthesis inhibitor, was found to be a weak T-cell mitogen for murine splenocytes. Maximal stimulation of [3H]thymidine incorporation was obtained with 10 to 100 ng of toxin per ml following a 4-day induction. PA was also shown to be a polyclonal activator of cytolytic T lymphocytes (CTL), effective against concanavalin A-treated target cells. The effective PA dose for CTL induction was the same as that for mitogenic stimulation, only with a prolonged priming time (7 days). In contrast to other mitogens, PA could not reactivate memory CTL into secondary CTL. The stimulation of CTL by subcytotoxic doses of PA may be relevant to its modulatory effect on the immunocellular system.
journal_name
Infect Immunjournal_title
Infection and immunityauthors
Zehavi-Willner Tdoi
10.1128/IAI.56.1.213-218.1988subject
Has Abstractpub_date
1988-01-01 00:00:00pages
213-8issue
1eissn
0019-9567issn
1098-5522journal_volume
56pub_type
杂志文章abstract::Fasciola hepatica is a prevalent helminth parasite of livestock. Infection results in polarization of the host's immune response and generation of type 2 helper (Th2) immune responses, which are known to be inhibitory to Th1 responses. Bovine tuberculosis (BTB) is a bacterial disease of economic and zoonotic importanc...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.01445-06
更新日期:2007-03-01 00:00:00
abstract::Adult murine models of Cryptosporidium infection involving Cryptosporidium muris and C. parvum were used to study immunity to cryptosporidiosis in the mammalian host. Immunocompetent BALB/c or C57BL/6 mice developed a highly patent infection with the RN 66 strain of C. muris but overcame the infection and were immune ...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.60.8.3325-3331.1992
更新日期:1992-08-01 00:00:00
abstract::One aspect in a broad spectrum of possible mechanisms of cariostatic reactions of fluoride is its interaction with the metabolism of oral bacteria. Information on the mechanisms and kinetics of fluoride inhibition of essential enzymes of the glycolytic pathway of the relevant bacteria is lacking. In this work, the iso...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.58.4.1043-1047.1990
更新日期:1990-04-01 00:00:00
abstract::Immunization with ribosomal preparations from Haemophilus influenzae type b elicited protective immunity in mice. Ribosomes from disrupted cells where isolated by differential centrifugation using sodium dodecyl sulfate. The washed ribosomes contained 25% protein and 75% ribonucleic acid and sedimented as a single pea...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.15.2.453-460.1977
更新日期:1977-02-01 00:00:00
abstract::The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor involved in controlling several aspects of immune responses, including the activation and differentiation of specific T cell subsets and antigen-presenting cells, thought to be relevant in the context of experimental Trypanosoma cruzi infec...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.00575-16
更新日期:2016-09-19 00:00:00
abstract::Expression of ace (adhesin to collagen of Enterococcus faecalis), encoding a virulence factor in endocarditis and urinary tract infection models, has been shown to increase under certain conditions, such as in the presence of serum, bile salts, urine, and collagen and at 46 °C. However, the mechanism of ace/Ace regula...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.02587-14
更新日期:2015-01-01 00:00:00
abstract::Pneumolysin is a 471-amino-acid toxin produced by Streptococcus pneumoniae which has both cytolytic and complement activation properties. We have constructed a derivative of the type 2 S. pneumoniae strain D39 in which the portion of the pneumolysin gene encoding amino acids 55 to 437 has been deleted in-frame. The vi...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.67.2.981-985.1999
更新日期:1999-02-01 00:00:00
abstract::The biological activity of C-ASWS, an alkali-soluble, water-soluble cell wall antigen isolated from mycelial-phase cells of Coccidioides immitis, was compared with that of a commercial coccidioidin (CDN; Cutter Laboratories); CDN-TS, a toluene-induced lysate of mycelial-phase cells; and spherulin, a spherule-derived e...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.15.3.751-755.1977
更新日期:1977-03-01 00:00:00
abstract::Recent studies revealed that acetylation is a widely used protein modification in prokaryotic organisms. The major protein acetylation acetyltransferase YfiQ and the sirtuin-like deacetylase CobB have been found to be involved in basic physiological processes, such as primary metabolism, chemotaxis, and stress respons...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.00224-18
更新日期:2018-05-22 00:00:00
abstract::Guinea pigs were treated with anti-CD18 antibody (M8), and subsequently middle ears (ME) were infected with nontypeable Haemophilus influenzae. Forty-eight hours after infection, the ME washes of these animals had significantly lower polymorphonuclear leukocyte numbers but higher bacterial counts compared with washes ...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.61.3.1132-1135.1993
更新日期:1993-03-01 00:00:00
abstract::An antigenic complex has been isolated in a highly purified from from the Melvin strain of Neisseria gonorrhoeae. The complex has a molecular weight of 9.3 x 10(6) and on sodium dodecyl sulfate-polyacrylamide gel electrophoresis was found to consist of several subunits; the most predominant had the following molecular...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.25.2.635-644.1979
更新日期:1979-08-01 00:00:00
abstract::In experimental visceral leishmaniasis, in which the tissue macrophage is the target, in vivo responsiveness to conventional chemotherapy (pentavalent antimony [Sb]) requires a T-cell-dependent mechanism. To determine if this mechanism involves gamma interferon (IFN-gamma)-induced activation and/or specific IFN-gamma-...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/iai.68.1.288-293.2000
更新日期:2000-01-01 00:00:00
abstract::Endogenous interleukin-12 (IL-12) mediates protection against Yersinia enterocolitica in C57BL/6 mice by triggering gamma interferon (IFN-gamma) production in NK and CD4+ T cells. Administration of exogenous IL-12 confers protection against yersiniae in Yersinia-susceptible BALB/c mice but exacerbates yersiniosis in r...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.66.5.2213-2220.1998
更新日期:1998-05-01 00:00:00
abstract::Patients with chronic bronchitis are colonized by and may develop acute bronchopulmonary infection due to nontypable Haemophilus influenzae (NTHI) despite the presence of bactericidal and opsonizing antibody to the infecting organism. To test the hypothesis that secretory immunoglobulin A (IgA) interferes with host de...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.45.1.36-40.1984
更新日期:1984-07-01 00:00:00
abstract::In vitro, Clostridium perfringens enterotoxin (CPE) binds to human ileal epithelium and induces morphological damage concurrently with reduced short-circuit current, transepithelial resistance, and net water absorption. CPE also binds to the human colon in vitro but causes only slight morphological and transport chang...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.73.12.8407-8410.2005
更新日期:2005-12-01 00:00:00
abstract::Following intranasal inoculation, Vibrio cholerae KFV101 (DeltactxAB DeltahapA DeltahlyA DeltartxA) colonizes and stimulates tumor necrosis factor alpha and interleukin 1beta (IL-1beta) in mice, similar to what occurs with isogenic strain P4 (DeltactxAB), but is less virulent and stimulates reduced levels of IL-6, dem...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.73.9.6157-6164.2005
更新日期:2005-09-01 00:00:00
abstract::We have determined the nucleotide sequence of the 1.4-kilobase DNA fragment containing the plasminogen activator gene (pla) of Yersinia pestis, which determines both plasminogen activator and coagulase activities of the species. The sequence revealed the presence of a 936-base-pair open reading frame that constitutes ...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.57.5.1517-1523.1989
更新日期:1989-05-01 00:00:00
abstract::Antibody rises to various virus subcomponents were measured by enzyme-linked immunosorbent assay in the paired sera of volunteers experimentally infected with human coronavirus 229E group viruses. Most of the antibody made during infection was directed against the virus surface projections, with only small amounts of ...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.31.3.845-849.1981
更新日期:1981-03-01 00:00:00
abstract::To characterize the roles of Porphyromonas gingivalis and its components in disease processes, we investigated the cytokine profiles induced by live P. gingivalis, its lipopolysaccharide (LPS), and its major fimbrial protein, fimbrillin (FimA). A cytokine antibody array revealed that human monocyte-derived macrophages...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.74.2.1204-1214.2006
更新日期:2006-02-01 00:00:00
abstract::Plasmodium ookinetes secrete chitinases to penetrate the acellular, chitin-containing peritrophic matrix of the mosquito midgut en route to invasion of the epithelium. Chitinases are potentially targets that can be used to block malaria transmission. We demonstrate here that chitinases of Plasmodium falciparum and P. ...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/iai.68.11.6461-6465.2000
更新日期:2000-11-01 00:00:00
abstract::A novel immunobiologically active fraction was prepared from a phenol-water extract of Prevotella intermedia ATCC 25611 by Sephadex G-100 column chromatography. The fraction consisted mainly of carbohydrate and protein and was devoid of fatty acid. The fraction showed high-molecular-weight bands (10,000 to 12,000) on ...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.65.11.4531-4538.1997
更新日期:1997-11-01 00:00:00
abstract::We have studied polyacryl starch microparticles as an adjuvant in oral vaccination in mice. Secreted antigens from Salmonella enterica serovar Enteritidis were administered covalently conjugated to microparticles, or as free antigens, orally or intramuscularly and evaluated for their immunogenicity and ability to elic...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/iai.70.3.1434-1442.2002
更新日期:2002-03-01 00:00:00
abstract::After interaction with tracheal epithelial cells, Bordetella pertussis induces the secretion of interleukin-6. This secretion is dependent on the expression of adenylate cyclase-hemolysin by the bacterium but not on the expression of other characterized bacterial toxins or adhesins. This finding confirms the important...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.72.9.5530-5533.2004
更新日期:2004-09-01 00:00:00
abstract::The attachment of radioisotope-labeled Mycoplasma pneumoniae to hamster tracheal rings in organ culture was examined by radioautography and liquid scintillation counting. Radioautographs of individual rings exposed for 8 h to (3H) thymidine-labeled virulent M. pneumoniae revealed a dense extracellular collection of em...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.13.3.959-966.1976
更新日期:1976-03-01 00:00:00
abstract::Four classes of mutants of type III group B streptococcus were isolated by serial subculture of the wild-type strain in the presence of type III-specific rabbit antiserum. Class I mutants no longer synthesized sialic acid but still elaborated the core antigen. Class II mutants maintained the ability to synthesize sial...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.42.1.141-151.1983
更新日期:1983-10-01 00:00:00
abstract::The kinetics of infection and the pathogenic effects on the reproductive function of laboratory mice infected with Bartonella birtlesii recovered from an Apodemus species are described. B. birtlesii infection, as determined by bacteremia, occurred in BALB/c mice inoculated intravenously. Inoculation with a low-dose in...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/iai.69.9.5313-5317.2001
更新日期:2001-09-01 00:00:00
abstract::Infection with highly pathogenic Streptococcus suis can cause septic shock, which is characterized by high levels of inflammatory cytokines and a high mortality rate. Our previous study indicated that TREM-1 (triggering receptor expressed on myeloid cells 1) was upregulated in swine spleen cells in response to S. suis...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.00440-15
更新日期:2015-08-01 00:00:00
abstract::Biomaterial-associated infections (BAI), which are predominantly caused by Staphylococcus epidermidis, are a significant problem in modern medicine. Biofilm formation is considered the pivotal element in the pathogenesis, but in previous mouse studies we retrieved S. epidermidis from peri-implant tissue. To assess the...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.01262-06
更新日期:2007-03-01 00:00:00
abstract::In a previous study we showed that the involvement of EP4 subtype of the prostaglandin E (PGE) receptor is crucial for lipopolysaccharide (LPS)-induced osteoclast formation in vitro. The present study was undertaken to test whether EP4 is actually associated with LPS-induced bone resorption in vivo. In wild-type (WT) ...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/iai.68.12.6819-6825.2000
更新日期:2000-12-01 00:00:00
abstract::Knowledge of the in vivo physiology and metabolism of Streptococcus pneumoniae is limited, even though pneumococci rely on efficient acquisition and metabolism of the host nutrients for growth and survival. Because the nutrient-limited, hypoxic host tissues favor mixed-acid fermentation, we studied the role of the pne...
journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.00178-09
更新日期:2009-12-01 00:00:00