Identification of Legionella pneumophila genes required for growth within and killing of human macrophages.

abstract：:Some strains of Streptococcus mutans were found to recognize and bind collagen type I. Binding of 125I-labeled collagen type I was specific in that collagen types I and II, but not unrelated proteins, were able to inhibit binding of the labeled ligand to bacteria. Collagen binding to S. mutans was partially reversible...

journal_title：Infection and immunity

authors： Switalski LM,Butcher WG,Caufield PC,Lantz MS

更新日期：1993-10-01 00:00:00

abstract：:The action of trehalose-6, 6'-dimycolate (cord factor) of Mycobacterium tuberculosis to induce site II-specific inhibition of mitochondrial oxidative phosphorylation and to stimulate adenosine triphosphatase activity was neutralized by its specific antibody. The activity was restored after dissociation of cord factor ...

journal_title：Infection and immunity

authors： Kato M

更新日期：1974-07-01 00:00:00

abstract：:Ribosomal subunits from Mycobacterium smegmatis were analyzed by using sedimentation velocity, sedimentation equilibrium, and acrylamide gel electrophoresis experiments. These s(20.w) values for the subunits are 48.7S and 28.1S. The molecular weight of the 49S subunit is about 1.65 x 10(6), and that of the 28S subunit...

journal_title：Infection and immunity

authors： Loge RV,Hill WE,Baker RE,Larson CL

更新日期：1974-03-01 00:00:00

abstract：:Chitinases of pathogens have been proposed as potential targets of vaccines or specific inhibitors. We studied the genomic organization, transcript levels, developmental expression, and biological function of chitinases in the rodent filarial nematode Acanthocheilonema viteae, a model organism for human-pathogenic fil...

journal_title：Infection and immunity

authors： Tachu B,Pillai S,Lucius R,Pogonka T

更新日期：2008-01-01 00:00:00

abstract：:Trypanosoma cruzi is a protozoan parasite that can initiate mucosal infection after conjunctival exposure. The anatomical route of T. cruzi invasion and spread after conjunctival parasite contamination remains poorly characterized. In the present work we have identified the sites of initial invasion and replication af...

journal_title：Infection and immunity

authors： Giddings OK,Eickhoff CS,Smith TJ,Bryant LA,Hoft DF

更新日期：2006-10-01 00:00:00

abstract：:Proteus mirabilis, a common agent of nosocomially acquired and catheter-associated urinary tract infection, is the most frequent cause of infection-induced bladder and kidney stones. Urease-catalyzed urea hydrolysis initiates stone formation in urine and can be inhibited by acetohydroxamic acid and other structural an...

journal_title：Infection and immunity

authors： Nicholson EB,Concaugh EA,Mobley HL

更新日期：1991-10-01 00:00:00

abstract：:The chemotactic behavior of Campylobacter jejuni was determined in the presence of different amino acids, carbohydrates, organic acids, and preparations and constituents of mucin and bile. L-Fucose was the only carbohydrate and L-aspartate, L-cysteine, L-glutamate, and L-serine were the only amino acids producing a ch...

journal_title：Infection and immunity

authors： Hugdahl MB,Beery JT,Doyle MP

更新日期：1988-06-01 00:00:00

abstract：:Chlamydia trachomatis L2 is an obligate intracellular microorganism with a unique biphasic life cycle. The extracellular form, the elementary body (EB), is infectious but metabolically inactive. Attachment of EBs to host cells is medicated by a heparan sulfate-like glycosaminoglycan. Following attachment, the EB is in...

journal_title：Infection and immunity

authors： Birkelund S,Johnsen H,Christiansen G

更新日期：1994-11-01 00:00:00

abstract：:Vaccination with recombinant outer surface protein A (OspA) has been shown to protect mice from infection with Borrelia burgdorferi, the Lyme disease agent. To determine whether antibodies to B. burgdorferi proteins other than OspA are involved in protective immunity, antibodies to OspA were removed from protective an...

journal_title：Infection and immunity

authors： Fikrig E,Barthold SW,Marcantonio N,Deponte K,Kantor FS,Flavell RA

更新日期：1992-02-01 00:00:00

abstract：:Ehrlichia chaffeensis, a tick-transmitted rickettsial, is the causative agent of human monocytic ehrlichiosis. To examine protein expression patterns, we analyzed total, membrane, and immunogenic proteomes of E. chaffeensis originating from macrophage and tick cell cultures. Total proteins resolved by one-dimensional ...

journal_title：Infection and immunity

authors： Seo GM,Cheng C,Tomich J,Ganta RR

更新日期：2008-11-01 00:00:00

abstract：:Science has always been a competitive undertaking. Despite recognition of the benefits of cooperation and team science, reduced availability of funding and jobs has made science more competitive than ever. Here we consider the benefits of competition in providing incentives to scientists and the adverse effects of com...

journal_title：Infection and immunity

authors： Fang FC,Casadevall A

更新日期：2015-04-01 00:00:00

abstract：:The symptoms of Lyme disease are caused by inflammation induced by species of the Borrelia burgdorferisensu lato complex. The various presentations of Lyme disease in the population suggest that differences exist in the intensity and regulation of the host response to the spirochete. Previous work has described correl...

journal_title：Infection and immunity

authors： Siebers EM,Liedhegner ES,Lawlor MW,Schell RF,Nardelli DT

更新日期：2020-10-19 00:00:00

abstract：:Haemophilus ducreyi, the causative agent of chancroid, produces a lipooligosaccharide (LOS) which terminates in N-acetyllactosamine. This glycoform can be further extended by the addition of a single sialic acid residue to the terminal galactose moiety. H. ducreyi does not synthesize sialic acid, which must be acquire...

journal_title：Infection and immunity

authors： Post DM,Mungur R,Gibson BW,Munson RS Jr

更新日期：2005-10-01 00:00:00

abstract：:Commercial fluid used for peritoneal lavage in peritonitis and in peritoneal dialysis suppressed the activity of peripheral blood leukocytes as measured by chemiluminescence, phagocytosis, and bacterial killing. Suppression was found to be due to the low pH and high osmolality of the fluid. The pH was adjusted to noni...

journal_title：Infection and immunity

authors： Duwe AK,Vas SI,Weatherhead JW

更新日期：1981-07-01 00:00:00

abstract：:One major outer membrane protein (P1) of Haemophilus influenzae type b (Hib), with an apparent molecular weight of 34,000 (34K) as determined by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), has been shown to be heat modifiable. After heating at 100 degrees C for 5 min in 2% SDS, the P1 protein...

journal_title：Infection and immunity

authors： Gonzales FR,Leachman S,Norgard MV,Radolf JD,McCracken GH Jr,Evans C,Hansen EJ

更新日期：1987-12-01 00:00:00

abstract：:Toxin A (TcdA) and toxin B (TcdB) are major virulence factors of Clostridium difficile. These two toxins intoxicate cultured cells by similar mechanisms, and TcdB generally is more potent than TcdA in cultured cells. The exact reason for this difference is unclear. Here, we report that the cellular effects of TcdA can...

journal_title：Infection and immunity

authors： He X,Sun X,Wang J,Wang X,Zhang Q,Tzipori S,Feng H

更新日期：2009-06-01 00:00:00

abstract：:Toxic shock syndrome (TSS) toxin 1 (TSST1) is produced by strains of Staphylococcus aureus associated with TSS. Purified TSST1 induces in rabbits a shock-like illness with many features similar to TSS in humans. These symptoms were also induced by TSST1-producing bacteria in diffusion chambers implanted in the rabbit ...

journal_title：Infection and immunity

authors： de Azavedo JC,Foster TJ,Hartigan PJ,Arbuthnott JP,O'Reilly M,Kreiswirth BN,Novick RP

更新日期：1985-10-01 00:00:00

abstract：:A ruthenium red-staining capsule was observed on two pathogenic strains, but not on one nonpathogenic strain of Mycoplasma gallisepticum. The capsule appeared to mediate cytadsorption of mycoplasmas to the chicken tracheal epithelium without evidence of membrane fusion. No relationship was seen between the presence of...

journal_title：Infection and immunity

authors： Tajima M,Yagihashi T,Miki Y

更新日期：1982-05-01 00:00:00

abstract：:CD14, the leukocyte receptor for lipopolysaccharide (LPS), is important in the response of human polymorphonuclear leukocytes (PMNs) to infection with gram-negative bacteria. The level of CD14 on the PMN surface increases after exposure to some inflammatory stimuli such as N-formyl-methionyl-leucyl-phenylalanine (fMLP...

journal_title：Infection and immunity

authors： Rodeberg DA,Morris RE,Babcock GF

更新日期：1997-11-01 00:00:00

abstract：:The ability of butyric acid, an extracellular metabolite from periodontopathic bacteria, to induce apoptosis in murine WEHI 231 cells, splenic B cells, and human RAJI cells was examined. The culture filtrate of Porphyromonas gingivalis, Prevotella loescheii, and Fusobacterium nucleatum, which contains high a percentag...

journal_title：Infection and immunity

authors： Kurita-Ochiai T,Ochiai K,Fukushima K

更新日期：1998-06-01 00:00:00

abstract：:Gram-negative bacterial cells exposed to a complement source may carry membrane attack complexes containing variable numbers of C9 molecules per C5b-8 site. In order to investigate the assembly of this complex, the ability of C9 molecules to bind to C5b-8 complexes was compared with the binding characteristics of C9 f...

journal_title：Infection and immunity

authors： MacKay SL,Dankert JR

更新日期：1994-07-01 00:00:00

abstract：:Production of the Kanagawa hemolysin by patient strains of Vibrio parahaemolyticus was found to respond to the pH rather than to the type of carbohydrate present in the growth medium. Regardless of the carbohydrate present, hemolysin production in peptone broth cultures occurred only when the pH was between 6.5 and 5....

journal_title：Infection and immunity

authors： Cherwonogrodzky JW,Clark AG

更新日期：1981-10-01 00:00:00

abstract：:We have previously demonstrated that fibronectin mediates streptococcal adhesion to host cells and that streptococci interact primarily with the N-terminal domain of fibronectin. FBP54 is a 54-kDa protein from group A streptococci that binds fibronectin. In this report, we show that the N-terminal domain of fibronecti...

journal_title：Infection and immunity

authors： Courtney HS,Dale JB,Hasty DI

更新日期：1996-07-01 00:00:00

abstract：:Previous attempts to induce mucosal antibodies in rhesus monkeys by enteric immunization have resulted in only modest and short-lived responses, dominated by immunoglobulin M (IgM) antibodies in the plasma. In this study, two groups of rhesus monkeys were immunized intranasally three times at 2-week intervals with a b...

journal_title：Infection and immunity

authors： Russell MW,Moldoveanu Z,White PL,Sibert GJ,Mestecky J,Michalek S M

更新日期：1996-04-01 00:00:00

abstract：:Enteropathogenic Escherichia coli (EPEC) interacts with intestinal epithelial cells, activating host signaling pathways leading to cytoskeletal rearrangements and ultimately diarrhea. In this study, we demonstrate that EPEC interacts with the macrophage-like cell line J774A.1 to inhibit phagocytosis by these cells. An...

journal_title：Infection and immunity

authors： Goosney DL,Celli J,Kenny B,Finlay BB

更新日期：1999-02-01 00:00:00

abstract：:C57BL/6 mice were infected intravenously with 6 X 10(3) Listeria monocytogenes organisms. As early as day 3 of infection, there was a marked reduction in the number of lymphocytes recovered from the peripheral blood, bone marrow, and thymuses of infected animals. Concomitantly, there was an increase in the number of s...

journal_title：Infection and immunity

authors： Watson SR,Redington TJ,Miller TB,Bullock WE

更新日期：1984-08-01 00:00:00

abstract：:Changes in cell viability and in factors affecting metabolic integrity were examined after exposure of Escherichia coli LP1092 to human serum. Antibody-dependent classical pathway activity accounted for the rapid killing of strain LP1092 by complement. Removal of serum lysozyme by bentonite absorption or by neutraliza...

journal_title：Infection and immunity

authors： Taylor PW,Kroll HP

更新日期：1983-01-01 00:00:00

abstract：:Legionella pneumophila is a bacterial pathogen that thrives in alveolar macrophages, causing a severe pneumonia. The virulence of L. pneumophila depends on its Dot/Icm type IV secretion system (T4SS), which delivers more than 300 effector proteins into the host, where they rewire cellular signaling to establish a repl...

journal_title：Infection and immunity

authors： Schroeder GN,Aurass P,Oates CV,Tate EW,Hartland EL,Flieger A,Frankel G

更新日期：2015-10-01 00:00:00

abstract：:Human serum at low concentrations inhibits the growth of Cryptococcus neoformans in vitro. Fractionation of serum yielded a purified inhibitory protein with a molecular mass of approximately 81.8 kDa, a pI of approximately 6.2, and an amino acid sequence that matched that of human transferrin. The inhibitory activity ...

journal_title：Infection and immunity

authors： Sridhar S,Ahluwalia M,Brummer E,Stevens DA

更新日期：2000-06-01 00:00:00

abstract：:Legionella anisa and the amoeba Hartmannella vermiformis were isolated from an indoor fountain implicated as the infectious reservoir in an outbreak of Pontiac fever. We evaluated the ability of this strain of L. anisa to multiply in cultures of an amoeba (H. vermiformis), a ciliated protozoan (Tetrahymena pyriformis)...

journal_title：Infection and immunity

authors： Fields BS,Barbaree JM,Sanden GN,Morrill WE

更新日期：1990-09-01 00:00:00