Muramic acid is not detectable in Chlamydia psittaci or Chlamydia trachomatis by gas chromatography-mass spectrometry.

abstract：:Lipopolysaccharides (LPSs) of Gram-negative bacteria comprise lipid A, core, and O-polysaccharide (OPS) components. Studies have demonstrated that LPSs isolated from the pathogenic species Burkholderia pseudomallei and Burkholderia mallei and from less-pathogenic species, such as Burkholderia thailandensis, are potent...

journal_title：Infection and immunity

authors： Sengyee S,Yoon SH,West TE,Ernst RK,Chantratita N

更新日期：2019-11-18 00:00:00

abstract：:The study of how bacteria respond to and obtain divalent metal ions provides insight into the regulation of virulence factors in the host environment. Regulation of metal permease operons in gram-positive bacteria may involve the binding of metal-responsive repressors to palindromic domains in their control regions. T...

journal_title：Infection and immunity

authors： Oetjen J,Fives-Taylor P,Froeliger EH

更新日期：2002-10-01 00:00:00

abstract：:A gene library of Chlamydia trachomatis (serovar L1) DNA has been prepared in the phage vector lambda 1059. From this bank, 20 recombinant phage-expressing components which reacted with serum from a patient with a C. trachomatis (L1) infection were chosen. Selective expression and radiolabeling of phage polypeptides i...

journal_title：Infection and immunity

authors： Allan I,Cunningham TM,Lovett MA

更新日期：1984-09-01 00:00:00

abstract：:Twenty-six Pseudomonas aeruginosa strains from patients with cystic fibrosis were typed by the Fisher immunotyping scheme. Only 6 strains were agglutinated by a single typing serum, whereas 15 strains were agglutinated with more than one serum and 5 were not agglutinated by any serum. Neither the polyagglutinable nor ...

journal_title：Infection and immunity

authors： Hancock RE,Mutharia LM,Chan L,Darveau RP,Speert DP,Pier GB

更新日期：1983-10-01 00:00:00

abstract：:Production of group A streptococcal pyrogenic exotoxins (SPE) type A and C was transferred from toxigenic streptococcal strains to nontoxigenic strains by lysogeny. Lysogens were tested for SPE with Ouchterlony immunodiffusion on Todd-Hewitt agar plates; toxin diffusing from isolated colonies reacted with specific hyp...

journal_title：Infection and immunity

authors： Johnson LP,Schlievert PM,Watson DW

更新日期：1980-04-01 00:00:00

abstract：:Staphylococcus aureus nasal carriage is a risk factor for infection in humans, particularly in the hospital environment. Attenuation of carriage has proven effective in reducing the prevalence of infection in some high-risk groups. To study staphylococcal factors that influence nasal colonization, a mouse model of S. ...

journal_title：Infection and immunity

authors： Kiser KB,Cantey-Kiser JM,Lee JC

更新日期：1999-10-01 00:00:00

abstract：:Mice receiving a single injection of cyclophosphamide (150 mg/kg) 1 to 6 days before inoculation with viable Candida albicans showed an increased susceptibility to the challenge accompanied by a reduction in peripheral blood polymorphonuclear leukocytes and lymphocytes as well as in spleen cellularity. Several immunol...

journal_title：Infection and immunity

authors： Bistoni F,Baccarini M,Blasi E,Marconi P,Puccetti P,Garaci E

更新日期：1983-04-01 00:00:00

abstract：:Potential vaccine components for protection against atrophic rhinitis in pigs were developed. This was achieved by deletion mutagenesis of the gene encoding the Pasteurella multocida toxin. Four purified toxin derivatives lacking different and widely separated regions in the amino acid sequence were characterized by a...

journal_title：Infection and immunity

authors： Petersen SK,Foged NT,Bording A,Nielsen JP,Riemann HK,Frandsen PL

更新日期：1991-04-01 00:00:00

abstract：:Phagocytosis and killing by alveolar macrophages from humans, rabbits, rats, and hamsters, were compared in vitro. In the absence of serum opsonins, human alveolar macrophages could phagocytize Staphylococcus aureus Cowan I (protein A positive), but not S. aureus EMS (protein A negative) or Pseudomonas aeruginosa MN. ...

journal_title：Infection and immunity

authors： Nguyen BY,Peterson PK,Verbrugh HA,Quie PG,Hoidal JR

更新日期：1982-05-01 00:00:00

abstract：:Lesions caused by Leishmania amazonensis normally heal, but relapses occur due to parasite persistence in host tissues. It has been proposed that infection of fibroblasts plays an important role in this process by providing the parasites with a safe haven in which to replicate. However, most previous studies have focu...

journal_title：Infection and immunity

authors： Morehead J,Coppens I,Andrews NW

更新日期：2002-08-01 00:00:00

abstract：:Effector mechanisms resulting from alternative complement pathway (ACP) activation cannot act efficiently against Yersinia enterocolitica serotype O3, as indicated by poor C3 to C9 consumption and by survival in EGTA (ethyleneglycoldiaminetetraacetic acid) Mg-serum. These results were not influenced by the lack or pre...

journal_title：Infection and immunity

authors： Wachter E,Brade V

更新日期：1989-07-01 00:00:00

abstract：:Mice (BALB/cJ, C3H/HeN, and C3H/HeJ) primed with actinomycin D became highly susceptible to lethal intoxication with staphylococcal enterotoxin B (SEB). The mice underwent toxicosis and toxic shock and died. Actinomycin D-primed C3H/HeN and C3H/HeJ mice showed equal sensitivity to SEB, suggesting that bacterial lipopo...

journal_title：Infection and immunity

authors： Chen JY,Qiao Y,Komisar JL,Baze WB,Hsu IC,Tseng J

更新日期：1994-10-01 00:00:00

abstract：:The actions of polymyxin B, rabbit polymorphonuclear lysosome extracts, 14 polycationic peptides (including defensin NP-2, cecropin P1, lactoferricin B, and active peptides from cationic protein 18 and bactenecin), EDTA, and Tris on Brucella spp. were studied, with other gram-negative bacteria as controls. Brucella sp...

journal_title：Infection and immunity

authors： Martínez de Tejada G,Pizarro-Cerdá J,Moreno E,Moriyón I

更新日期：1995-08-01 00:00:00

abstract：:Borrelia burgdorferi encodes a functional homolog of canonical Lon protease termed Lon-2. In addition, B. burgdorferi encodes a second Lon homolog called Lon-1. Recent studies suggest that Lon-1 may function differently from the prototypical Lon protease. However, the function of Lon-1 in B. burgdorferi biology remain...

journal_title：Infection and immunity

authors： Thompson C,Mason C,Parrilla S,Ouyang Z

更新日期：2020-05-20 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

authors： Bohn E,Schmitt E,Bielfeldt C,Noll A,Schulte R,Autenrieth IB

更新日期：1998-05-01 00:00:00

abstract：:A parasitic protozoan, Leishmania mexicana amazonensis, was previously made resistant to tunicamycin (J.A. Kink and K.-P. Chang, Proc. Natl. Acad. Sci. USA 84:1253-1257, 1987). In the present study, six different tunicamycin-resistant variants were biologically and biochemically compared with their parental wild type ...

journal_title：Infection and immunity

authors： Kink JA,Chang KP

更新日期：1987-07-01 00:00:00

abstract：:Purified group A streptococcal peptidoglycan-polysaccharide (PG-PS) fragments were either de-O-acylated, or acetylated and then de-O-acylated to yield N-acetylated PG-PS. Native PG-PS was poorly degraded, N-acetylated PG-PS was extensively degraded, and de-O-acylated PG-PS was only slightly degraded by hen egg white l...

journal_title：Infection and immunity

authors： Stimpson SA,Lerch RA,Cleland DR,Yarnall DP,Clark RL,Cromartie WJ,Schwab JH

更新日期：1987-01-01 00:00:00

abstract：:By using a suckling mouse assay, heat-stable enterotoxin (ST) was purified from the culture filtrate of Yersinia enterocolitica isolated from a diarrheal patient. The purification procedures involve ultrafiltration with an Amicon HIP-10 hollow fiber, ethanol fractionation, protamine sulfate treatment, diethylaminoethy...

journal_title：Infection and immunity

authors： Okamoto K,Inoue T,Ichikawa H,Kawamoto Y,Miyama A

更新日期：1981-02-01 00:00:00

abstract：:We have previously shown that a Pasteurella multocida cexA mutant (PBA875) was impaired in capsule export and highly attenuated in virulence for mice (J. D. Boyce and B. Adler, Infect. Immun. 68:3463-3468, 2000). In this study we show that immunization with high, but not low, doses of PBA875 can confer significant pro...

journal_title：Infection and immunity

authors： Boyce JD,Adler B

更新日期：2001-03-01 00:00:00

abstract：:Plasmid DNA from two strains of enterotoxigenic Escherichia coli harboring genes encoding coli surface antigen 4 (CS4) and from seven Indian enterotoxigenic E. coli isolates cross-hybridized at low stringency but not at high stringency with two polynucleotide probes derived from the colonization factor antigen I (CFA/...

journal_title：Infection and immunity

authors： Sommerfelt H,Grewal HM,Svennerholm AM,Gaastra W,Flood PR,Viboud G,Bhan MK

更新日期：1992-09-01 00:00:00

abstract：:Trefoil family factor 2 (TFF2), also known as spasmolytic peptide, is a low-molecular-weight protein that is upregulated in gastric tissues infected with Helicobacter or having other inflammatory conditions, but a precise function is yet to be elucidated. The role of TFF2 in the development of gastritis, colitis, and ...

journal_title：Infection and immunity

authors： Kurt-Jones EA,Cao L,Sandor F,Rogers AB,Whary MT,Nambiar PR,Cerny A,Bowen G,Yan J,Takaishi S,Chi AL,Reed G,Houghton J,Fox JG,Wang TC

更新日期：2007-01-01 00:00:00

abstract：:Nonopsonic invasion of mononuclear phagocytes by Mycobacterium tuberculosis is likely important in the establishment of a primary infection in the lung. M. tuberculosis binds to a variety of phagocyte receptors, of which the mannose receptor and complement receptor type 3 (CR3) may support nonopsonic binding. CR3, a b...

journal_title：Infection and immunity

authors： Cywes C,Godenir NL,Hoppe HC,Scholle RR,Steyn LM,Kirsch RE,Ehlers MR

更新日期：1996-12-01 00:00:00

abstract：:We demonstrate that transposon-mediated mutagenesis can be used to construct mutations in the pathogen Brucella abortus. We have used both a plasmid and a bacteriophage to introduce either Tn5 or Tn5 lac into the Brucella chromosome. B. abortus is naturally sensitive to kanamycin. We have selected 22 independent kanam...

journal_title：Infection and immunity

authors： Smith LD,Heffron F

更新日期：1987-11-01 00:00:00

abstract：:Toxoplasma gondii infection in pregnant women may result in abortion or in fetal teratogenesis; however, the underlying mechanisms are still unclear. In this paper, based on a murine model, we showed that maternal infection with RH strain T. gondii tachyzoites induced elevated production of reactive oxygen species (RO...

journal_title：Infection and immunity

authors： Xu X,Liu T,Zhang A,Huo X,Luo Q,Chen Z,Yu L,Li Q,Liu L,Lun ZR,Shen J

更新日期：2012-06-01 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

authors： Zhou Q,Amar S

更新日期：2006-02-01 00:00:00

abstract：:Plasmodium falciparum's ability to invade erythrocytes is essential for its survival within the human host. Immune mechanisms that impair this ability are therefore expected to contribute to immunity against the parasite. Plasma of humans who are naturally exposed to malaria has been shown to have growth-inhibitory ac...

journal_title：Infection and immunity

authors： Rono J,Färnert A,Olsson D,Osier F,Rooth I,Persson KE

更新日期：2012-05-01 00:00:00

abstract：:It was found that cells of Nocardia asteroides GUH-2 (virulent) were approximately 10 times more virulent than cells of N. asteroides 14759 (intermediate) and greater that 500 times more virulent than N. asteroides 10905 (avirulent) cells when early-stationary-phase cultures suspended in saline were injected intraven...

journal_title：Infection and immunity

authors： Beaman BL,Maslan S

更新日期：1977-06-01 00:00:00

abstract：:The intraerythrocytic apicomplexan Babesia microti, the primary causative agent of human babesiosis, is a major public health concern in the United States and elsewhere. Apicomplexans utilize a multiprotein complex that includes a type I membrane protein called apical membrane antigen 1 (AMA1) to invade host cells. We...

journal_title：Infection and immunity

authors： Moitra P,Zheng H,Anantharaman V,Banerjee R,Takeda K,Kozakai Y,Lepore T,Krause PJ,Aravind L,Kumar S

更新日期：2015-10-01 00:00:00

abstract：:Neisseria gonorrhoeae is an obligate human pathogen that causes the common sexually transmitted infection gonorrhea. Gonococcal infections cause significant morbidity, particularly among women, as the organism ascends to the upper reproductive tract, resulting in pelvic inflammatory disease, ectopic pregnancy, and inf...

journal_title：Infection and immunity

authors： Hollander A,Mercante AD,Shafer WM,Cornelissen CN

更新日期：2011-12-01 00:00:00

abstract：:T-cell-mediated immunity is an important determinant in protection against primary infection with Coccidioides immitis, a dimorphic fungal pathogen that causes the disease coccidioidomycosis. To determine if interleukin-12 (IL-12) gene therapy could potentiate host response against C. immitis, we constructed a single-...

journal_title：Infection and immunity

authors： Jiang C,Magee DM,Cox RA

更新日期：1999-06-01 00:00:00