A Nonoligomerizing Mutant Form of Helicobacter pylori VacA Allows Structural Analysis of the p33 Domain.

abstract：:The ability to bind Congo red (Crb+) is associated with virulence of Shigella flexneri and is encoded by a large, 220-kilobase plasmid. We cloned fragments of this plasmid to isolate the sequences encoding Congo red binding, to determine the degree of conservation of these sequences among S. flexneri strains, and to s...

journal_title：Infection and immunity

authors： Daskaleros PA,Payne SM

更新日期：1986-11-01 00:00:00

abstract：:The ability of intracellular pathogens to sense and adapt to the hostile environment of the host is an important factor governing virulence. We have sequenced the operon encoding the major heat shock proteins GroES and GroEL in the gram-positive food-borne pathogen Listeria monocytogenes. The operon has a conserved or...

journal_title：Infection and immunity

authors： Gahan CG,O'Mahony J,Hill C

更新日期：2001-06-01 00:00:00

abstract：:A method for stimulating sensitized lymphocytes by inactivated herpes simplex virus was established by using cultures of washed whole blood cells. The development of the immune response of herpes simplex virus-infected guinea pigs was examined at different times in the 4-month period after infection. Humoral and cellu...

journal_title：Infection and immunity

authors： Scriba M

更新日期：1974-09-01 00:00:00

abstract：:The adherence mechanism of Aeromonas caviae Sch3N to HEp-2 cells was initially investigated through four mini-Tn5 mutants that showed a 10-fold decrease in adherence. These mutants lost motility, flagella, and their lipopolysaccharide (LPS) O antigen (O-Ag). Three genes, flmB-neuA-flmD, were found to be interrupted by...

journal_title：Infection and immunity

authors： Gryllos I,Shaw JG,Gavín R,Merino S,Tomás JM

更新日期：2001-01-01 00:00:00

abstract：:Salmonella enterica serovar Typhimurium employs two different type III secretion systems (TTSS) encoded within Salmonella pathogenicity islands 1 and 2 (SPI1 and SPI2) for targeting of effector proteins into the cytosol of eukaryotic cells during different stages of the infection cycle. The SPI1 TTSS translocates viru...

journal_title：Infection and immunity

authors： Panthel K,Meinel KM,Domènech VE,Retzbach H,Igwe EI,Hardt WD,Rüssmann H

更新日期：2005-01-01 00:00:00

abstract：:Streptococcus agalactiae (group B streptococcus [GBS]) is the leading cause of neonatal pneumonia, sepsis, and meningitis. An in silico genome analysis indicated that GBS strain NEM316 encodes 35 proteins containing an LPXTG motif which are thought to be covalently linked to the peptidoglycan by an enzyme called sorta...

journal_title：Infection and immunity

authors： Lalioui L,Pellegrini E,Dramsi S,Baptista M,Bourgeois N,Doucet-Populaire F,Rusniok C,Zouine M,Glaser P,Kunst F,Poyart C,Trieu-Cuot P

更新日期：2005-06-01 00:00:00

abstract：:A set of four monoclonal antibodies was produced against a highly purified pepsin extract of type 5 streptococcal M protein. Three of the four antibodies cross-reacted with purified M proteins from heterologous serotypes and opsonized the respective heterologous organisms. Our studies suggest that monoclonal antibodie...

journal_title：Infection and immunity

authors： Dale JB,Beachey EH

更新日期：1984-10-01 00:00:00

abstract：:Our previous studies identified two iron-regulated cytoplasmic membrane proteins of 32 and 36 kDa expressed by both Staphylococcus epidermidis and Staphylococcus aureus. In this study we show by Triton X-114 phase partitioning and tritiated palmitic acid labelling that these proteins are lipoproteins which are anchore...

journal_title：Infection and immunity

authors： Cockayne A,Hill PJ,Powell NB,Bishop K,Sims C,Williams P

更新日期：1998-08-01 00:00:00

abstract：:The bactericidal activity of guinea pig and human polymorphonuclear leukocytes (PMNs) against a smooth-intermediate strain (45/0) and a rough strain (45/20) of Brucella abortus has been examined. After incubation for 120 min, guinea pig PMNs incubated with either the smooth strain 45/0 or the rough strain 45/20 exhibi...

journal_title：Infection and immunity

authors： Kreutzer DL,Dreyfus LA,Robertson DC

更新日期：1979-03-01 00:00:00

abstract：:Cross-reactive humoral immune responses between antigens of different developmental stages of the worm Schistosoma mansoni have previously been demonstrated. In contrast, information on antigenic cross-reactivity at the T-cell level is still very sparse. The present study examined the cross-reactive T-cell responses t...

journal_title：Infection and immunity

authors： Lukacs NW,Boros DL

更新日期：1991-09-01 00:00:00

abstract：:A novel in vivo expression technology (IVET) was performed to identify Klebsiella pneumoniae CG43 genes that are specifically expressed during infection of BALB/c mice. The IVET employed a UDP glucose pyrophosphorylase (galU)-deficient mutant of K. pneumoniae which is incapable of utilizing galactose and synthesizing ...

journal_title：Infection and immunity

authors： Lai YC,Peng HL,Chang HY

更新日期：2001-11-01 00:00:00

abstract：:We have cloned and sequenced the d15 gene from two strains of Haemophilus influenzae type b (Hib) and two strains of nontypeable H. influenzae (NTHI). The nucleotide and deduced protein sequences of d15 are highly conserved, with only a small variable region identified near the carboxyl terminus of the protein. Analys...

journal_title：Infection and immunity

authors： Loosmore SM,Yang YP,Coleman DC,Shortreed JM,England DM,Klein MH

更新日期：1997-09-01 00:00:00

abstract：:Several immunological, hematological, and pathological responses associated with Marek's disease were determined. Four-week-old Marek's disease-infected and control chickens were injected with Salmonella pullorum antigen. About one-half of all infected chickens tested were unresponsive to antigenic challenge. Antibody...

journal_title：Infection and immunity

authors： Evans DL,Patterson LT

更新日期：1971-11-01 00:00:00

abstract：:B-cell-deficient C57B1/6J mice (suppressed from birth with goat anti-mu) and controls (treated from birth with normal goat serum) were infected with Trypanosoma rhodesiense. There was a significant (P less than 0.01) decrease in duration of survival of the mu-suppressed mice compared with that of controls. Whereas bot...

journal_title：Infection and immunity

authors： Campbell GH,Esser KM,Weinbaum FI

更新日期：1977-11-01 00:00:00

abstract：:Interactions between Yersinia enterocolitica and rabbit ileal mucus were examined. Strains carrying the Yersinia virulence plasmid, pYV, adhered to crude mucus but not to intestinal luminal contents that had been immobilized on polystyrene. Using an Y. enterocolitica O:9 mutant in which the yadA gene (formerly called ...

journal_title：Infection and immunity

authors： Paerregaard A,Espersen F,Jensen OM,Skurnik M

更新日期：1991-01-01 00:00:00

abstract：:The blood-stage development of malaria parasites is initiated by the invasion of merozoites into susceptible erythrocytes. Specific receptor-ligand interactions must occur for the merozoites to first attach to and then invade erythrocytes. Because the invasion process is essential for the parasite's survival and the m...

journal_title：Infection and immunity

authors： Tsuboi T,Kappe SH,al-Yaman F,Prickett MD,Alpers M,Adams JH

更新日期：1994-12-01 00:00:00

abstract：:An experimental model of "chronic" diphtheria intoxication in the guinea pig was developed. Adult guinea pigs, subjected to a regimen of multiple sublethal doses of purified diphtheria toxin (total of 1.4 minimum lethal doses divided equally in four daily doses), developed a toxemia which terminated in death between 6...

journal_title：Infection and immunity

authors： Bonventre PF

更新日期：1973-04-01 00:00:00

abstract：:The literature on chronic mucocutaneous candidiasis contains multiple reports which suggest that loss of cell-mediated immunity in this disease may be related in part to the presence of an inhibitory factor(s) present in patient plasma. One such inhibitory factor has been suggested to be mannan polysaccharide released...

journal_title：Infection and immunity

authors： Nelson RD,Herron MJ,McCormack RT,Gehrz RC

更新日期：1984-03-01 00:00:00

abstract：:In bacterial infections, mononuclear and polymorphonuclear phagocytes are key components of host defenses. Recent investigations have indicated that chemokines are able to recruit and activate phagocytes. In particular, interleukin-8 (IL-8) attracts polymorphonuclear leukocytes (PMNs), while monocyte chemoattractant p...

journal_title：Infection and immunity

authors： Tonetti MS,Imboden MA,Gerber L,Lang NP,Laissue J,Mueller C

更新日期：1994-09-01 00:00:00

abstract：:A murine respiratory infection model was used to study the mechanism of protective immunity to Bordetella pertussis. We found that nude mice, which are deficient in T cells, developed a persistent infection and failed to clear the bacteria after aerosol inoculation. In contrast, normal adult nonimmune mice cleared a r...

journal_title：Infection and immunity

authors： Mills KH,Barnard A,Watkins J,Redhead K

更新日期：1993-02-01 00:00:00

abstract：:Bacterial lipopolysaccharide (LPS) is a potent stimulus of cells, yet a target protein for LPS has not been defined. We used two approaches to define LPS-binding sites on cell surfaces: one assay measured binding of LPS-coated erythrocytes (ELPS) to cultured human cells, and a second measured binding of a radiolabeled...

journal_title：Infection and immunity

authors： Golenbock DT,Hampton RY,Raetz CR,Wright SD

更新日期：1990-12-01 00:00:00

abstract：:Mice infected with various strains of Salmonella enteritidis and S. typhimurium were found to be more sensitive to the cell wall lipopolysaccharide (LPS) extracted from certain strains of Salmonella than noninfected mice. This hypersensitivity was induced by those smooth or rough strains which possessed a polysacchari...

journal_title：Infection and immunity

authors： Kawakami M,Hara Y,Osawa N

更新日期：1971-11-01 00:00:00

abstract：:Random minitransposon mutagenesis was used to identify genes involved in the survival of Bordetella bronchiseptica within eukaryotic cells. One of the mutants which exhibited a reduced ability to survive intracellularly harbored a minitransposon insertion in a locus (ris) which displays a high degree of homology to tw...

journal_title：Infection and immunity

authors： Jungnitz H,West NP,Walker MJ,Chhatwal GS,Guzmán CA

更新日期：1998-10-01 00:00:00

abstract：:Myeloid differentiation protein 88 (MyD88) is a general adaptor for the signaling cascade through receptors of the Toll/IL-1R family. When infected with Leishmania major parasites, MyD88-deficient mice displayed a dramatically enhanced parasite burden in their tissues similar to that found in susceptible BALB/c mice. ...

journal_title：Infection and immunity

authors： Debus A,Gläsner J,Röllinghoff M,Gessner A

更新日期：2003-12-01 00:00:00

abstract：:In C3H gnotobiotic mice, no significant difference was observed between the translocation of nine clinical isolates of enteropathogenic Campylobacter spp. and that of seven nonisogeneic Escherichia coli strains with or without various determinants of pathogenicity. In addition, there was no correlation found between t...

journal_title：Infection and immunity

authors： Youssef M,Corthier G,Goossens H,Tancrede C,Henry-Amar M,Andremont A

更新日期：1987-04-01 00:00:00

abstract：:Cryptococcal meningoencephalitis develops as a result of hematogenous dissemination of inhaled Cryptococcus neoformans from the lung to the brain. The mechanism(s) by which C. neoformans crosses the blood-brain barrier (BBB) is a key unresolved issue in cryptococcosis. We used both an in vivo mouse model and an in vit...

journal_title：Infection and immunity

authors： Chang YC,Stins MF,McCaffery MJ,Miller GF,Pare DR,Dam T,Paul-Satyaseela M,Kim KS,Kwon-Chung KJ

更新日期：2004-09-01 00:00:00

abstract：:Twenty monoclonal antibodies have been prepared to the erythrocytes from CBA/Ca mice infected with the rodent malaria Plasmodium chabaudi. By immunofluorescence, 15 of these antibodies recognized parasite antigens expressed only during the development of mature trophozoites to schizonts and merozoites, 2 recognized pa...

journal_title：Infection and immunity

authors： Boyle DB,Newbold CI,Smith CC,Brown KN

更新日期：1982-10-01 00:00:00

abstract：:Ehrlichia chaffeensis, a tick-borne rickettsial organism, causes the disease human monocytic ehrlichiosis. The pathogen also causes disease in several other vertebrates, including dogs and deer. In this study, we assessed two clonally purified E. chaffeensis mutants with insertions within the genes Ech_0379 and Ech_06...

journal_title：Infection and immunity

authors： Nair AD,Cheng C,Jaworski DC,Ganta S,Sanderson MW,Ganta RR

更新日期：2015-07-01 00:00:00

abstract：:Larvae of Toxocara canis, a nematode parasite of dogs, infect humans, causing visceral and ocular larva migrans. In noncanid hosts, larvae neither grow nor differentiate but endure in a state of arrested development. Reasoning that parasite protein production is orientated to immune evasion, we undertook a random sequ...

journal_title：Infection and immunity

authors： Tetteh KK,Loukas A,Tripp C,Maizels RM

更新日期：1999-09-01 00:00:00

abstract：:Sepsis and lipopolysaccharide (LPS) trigger the systemic release of both cytokines and catecholamines. Cytokines are known to be capable of eliciting a stress hormone response in vivo. The present study sought insight into the effect of noradrenaline on LPS-induced release of tumor necrosis factor alpha (TNF) and inte...

journal_title：Infection and immunity

authors： van der Poll T,Jansen J,Endert E,Sauerwein HP,van Deventer SJ

更新日期：1994-05-01 00:00:00