Abstract:
:The growth of Mycobacterium microti was inhibited within J774A.1 macrophage cells activated with either interferon-gamma or tumor necrosis factor-alpha. Activation with interferon-gamma or tumor necrosis factor-alpha alone did not stimulate the production of nitrite in J774A.1 cells. Interferon-gamma but not tumor necrosis factor-alpha increased the production of hydrogen peroxide in a concentration dependent manner but scavengers of reactive oxygen species did not influence the growth inhibiting effect of interferon-gamma within J774A.1 cells. Both interferon-gamma and tumor necrosis factor-alpha enhanced the fusion of M. microti containing phagosomes with lysosomes and the ultimate degradation of bacteria. Our results showed that growth inhibition of M. microti within interferon-gamma or tumor necrosis factor-alpha stimulated J774A.1 cells was independent of reactive oxygen intermediate and reactive nitrogen intermediate production.
journal_name
FEMS Microbiol Lettjournal_title
FEMS microbiology lettersauthors
Gupta R,Dogra N,Raje M,Majumder Sdoi
10.1016/0378-1097(96)00175-9subject
Has Abstractpub_date
1996-07-01 00:00:00pages
171-8issue
2-3eissn
0378-1097issn
1574-6968pii
0378-1097(96)00175-9journal_volume
140pub_type
杂志文章abstract::The ascomycetous black yeasts Hortaea werneckii, Phaeotheca triangularis, and Trimmatostroma salinum are halophilic fungi that inhabit hypersaline water of solar salterns. They are characterized by slow, meristematic growth and very thick, darkly pigmented cell walls. The dark pigment, generally thought to be melanin,...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/S0378-1097(04)00073-4
更新日期:2004-03-19 00:00:00
abstract::Marine viruses are the most abundant biological entity in the oceans, the majority of which infect bacteria and are known as bacteriophages. Yet, the bulk of bacteriophages form part of the vast uncultured dark matter of the microbial biosphere. In spite of the paucity of cultured marine bacteriophages, it is known th...
journal_title:FEMS microbiology letters
pub_type: 杂志文章,评审
doi:10.1093/femsle/fnw158
更新日期:2016-08-01 00:00:00
abstract::Two different nucleic acid precursor utilization patterns were obtained for five avian isolates of Chlamydia psittaci. Three of the isolates behaved in a manner similar to that previously described, showing total dependency on the host cell for ribonucleoside triphosphates and being unable to utilize medium-supplied t...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1993.tb06123.x
更新日期:1993-04-15 00:00:00
abstract::The genes encoding transferrin-binding proteins (TBPs) 1 and 2 of Neisseria meningitidis and N. gonorrhoeae were used as model loci in a novel method of cloning (twin N-terminal polymerase chain reaction; TNT-PCR) involving amplification between the 5' ends of two genes. Primers were based on N-terminal amino-acid seq...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/0378-1097(93)90354-5
更新日期:1993-02-15 00:00:00
abstract::The aim of this study was to illustrate the relative pervasiveness of Borderline Oxacillin Resistant Staphylococcus aureus (BORSA) and Methicillin-Resistant Staphylococcus aureus (MRSA) in community and food of animal origin and their relationship with other genetic determinants. Staphylococcus aureus isolates were su...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1093/femsle/fnaa201
更新日期:2020-12-22 00:00:00
abstract::Group B streptococci (GBS) represent a very important group of human pathogens. So far little is known about the mechanisms by which these bacteria can cause disease and the bacterial factors involved. One putative virulence factor is the beta antigen of the C protein complex (Bac), which can bind to the Fc region of ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1999.tb08804.x
更新日期:1999-11-15 00:00:00
abstract::A chemiluminescence immunoassay (CLIA) was developed to detect Cryptosporidium parvum growth in Madin-Darby canine kidney (MDCK) cell cultures. Optimal results were obtained when MDCK cells were plated at a density of 1 x 10(4) cells/well (96-well plate) and maintained as a monolayer for 4 days prior to infection with...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1996.tb08057.x
更新日期:1996-03-01 00:00:00
abstract::Astaxanthin possesses higher antioxidant activity than other carotenoids and, for this and other reasons, has great commercial potential for use in the aquaculture, pharmaceutical, and food industries. The basidiomycetous yeast Xanthophyllomyces dendrorhous is one of the best natural producers of astaxanthin, but wild...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2008.01278.x
更新日期:2008-09-01 00:00:00
abstract::Many bacteria are capable of accumulating intracellular granules of polyhydroxyalkanoates (PHA). In this work, we developed confocal microscopy analysis of bacterial cells to study changes in the diameters of cells as well as PHA granules during growth and PHA accumulation in the bacterium Cupriavidus necator H16 (for...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1093/femsle/fnw094
更新日期:2016-05-01 00:00:00
abstract::Insertion sequences (ISs) are mobile genetic elements widely distributed among bacteria. Their impact on the bacterial genome is multifold, including transfer of genetic information, shuttle of adaptive traits and influence on the genomic content. As a result, ISs play an important role in the organization, plasticity...
journal_title:FEMS microbiology letters
pub_type: 信件
doi:10.1111/j.1574-6968.2009.01562.x
更新日期:2009-05-01 00:00:00
abstract::Three strains of Streptococcus uberis isolated from dairy cows with mastitis were co-cultured with a bovine mammary epithelial cell line (MAC-T) in Dulbecco's modified Eagle's medium without fetal bovine serum. Protein profiles from culture supernatants and bacterial pellets among different treatments were compared by...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1998.tb13896.x
更新日期:1998-09-15 00:00:00
abstract::Pseudomonas pseudoalcaligenes strain YS1 isolated from oil contaminated soil was able to produce polyhydroxybutyrate blended with medium-chain-length polyhydroxyalkanoates (mcl PHA). PHA synthesis genes were cloned from this strain. A fadB (gene for fatty acid degradation) deleted mutant Escherichia coli KM32B (FADB::...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2002.tb11247.x
更新日期:2002-06-18 00:00:00
abstract::CRISPR-Cas systems provide adaptive immunity against mobile genetic elements, but employment of this resistance mechanism is often reported with a fitness cost for the host. Whether or not CRISPR-Cas systems are important barriers for the horizontal spread of conjugative plasmids, which play a crucial role in the spre...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1093/femsle/fnz047
更新日期:2019-03-01 00:00:00
abstract::One of the commercial strains of Flammulina velutipes was analyzed for the presence of double-stranded RNA (dsRNA) elements to examine the underlying mechanism of strain degeneration. As a result, two dsRNA elements sized 1.9 and 1.8 kb were detected in mycelium derived from spontaneously brown-colored fruit body. The...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1999.tb08814.x
更新日期:1999-11-15 00:00:00
abstract::A bacterial strain, designated as TSB-6, was isolated from the sediments of a Tantloi (India) hot spring at 65 °C. The strain showed 98% 16S rRNA gene sequence similarity with Anoxybacillus kualawohkensis strain KW12 and was found to grow optimally at 37 °C. However, growing cells, cell suspensions, and cell-free extr...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2012.02555.x
更新日期:2012-06-01 00:00:00
abstract::Binding of meningitis-causing Escherichia coli K1 to human brain microvascular endothelial cells (HBMEC) contributes to traversal of the blood-brain barrier, which occurs in part by the mannose-sensitive binding of FimH. In this study, we showed that FimH also binds to HBMEC, independent of mannose, and identified ATP...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2009.01878.x
更新日期:2010-02-01 00:00:00
abstract::Vibrio cholerae non-O1 strain N037 produced a hemolysin (NO37-Hly) which was antigenically similar to E1 Tor hemolysin (E1 Tor-Hly) but different in molecular size, hemolytic activity, and glucose binding capacity. In the gene encoding NO37-Hly, a 4-bp insertion into the structural gene for E1 Tor-Hly (hlyA) was found...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1995.tb07876.x
更新日期:1995-11-01 00:00:00
abstract::A phage typing system using a group of 11 closely related phage (as judged by Southern analysis and restriction fragment length polymorphism analysis) was able to distinguish at least six phage types in Salmonella heidelberg of human and animal origin. Restriction fragment length polymorphism analysis using cosmid pro...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1993.tb06118.x
更新日期:1993-04-15 00:00:00
abstract::We have devised a reliable procedure for the separation of three beta-lactamases of isoelectric focusing points (pI), 5.4, 6.5, and 7.9 by Fast Protein Liquid Chromatography (FPLC System). All of these enzymes were transferable and originated from a ceftazidime and cefotaxime resistant Klebsiella pneumoniae isolated i...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/0378-1097(90)90064-w
更新日期:1990-06-01 00:00:00
abstract::Staphylococcus aureus lipase (SAL) is known to possess broad substrate specificity for triacylglycerides. We found that a sub-minimum inhibitory concentration of farnesol (1000 mg L(-1)) inhibits this lipase activity on a Mueller-Hinton agar containing 1% Tween substrates. A quantitative lipase assay using p-nitrophen...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2007.00772.x
更新日期:2007-08-01 00:00:00
abstract::This study reports on the antifungal activities of statins combined with an antifungal compound secreted by Penicillium chrysogenum, PAF. Several species belonging in the class Zygomycetes are considered to be agents of human or animal mycoses; other species have significance as postharvest plant pathogens. In the pre...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2007.00661.x
更新日期:2007-05-01 00:00:00
abstract::Streptococcus suis is a worldwide cause of various swine infections and is also an important agent of zoonosis. Strains of S. suis are classified according to their serotype, and currently, 35 serotypes are recognized. The aim of this study was to characterize nontypeable isolates of S. suis with regard to their cell ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2010.02086.x
更新日期:2010-10-01 00:00:00
abstract::Helicobacter pylori genomes contain about 30 hop genes that encode outer membrane proteins. Helicobacter pylori hopQ alleles exhibit a high level of genetic diversity, and two families of hopQ alleles have been described. Type I hopQ alleles are found more commonly in cag-positive H. pylori strains from patients with ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2008.01368.x
更新日期:2008-12-01 00:00:00
abstract::PhoP was previously shown to be important for Yersinia pestis survival in macrophage and under macrophage-induced stresses. In this work, a phoP disruptant of Y. pestis 201 was generated using the Red cloning procedure. The transcription profile of the wild-type Y. pestis was then compared with that of the phoP mutant...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/j.femsle.2005.06.053
更新日期:2005-09-01 00:00:00
abstract::The ectomycorrhizal fungus Paxillus involutus efficiently took up exogenously supplied [14C]alanine and rapidly converted it to pyruvate, citrate, succinate, fumarate and to CO2, thus providing direct evidence for the utilisation of alanine as a respiratory substrate. [14C]alanine was further actively metabolised to g...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1994.tb07080.x
更新日期:1994-08-01 00:00:00
abstract::The constitutive expression vector pHY300-F1gfp was constructed to test the function of a promoter, F1, cloned from the rice epiphyte Bacillus brevis strain DX01. The DX01 cells harboring the plasmid pHY300-F1gfp were shown to produce bright green fluorescence. The results were confirmed by Western blot analysis and f...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/S0378-1097(03)00797-3
更新日期:2003-12-05 00:00:00
abstract::The discovery that all hyperthermophiles that have been evaluated have the capacity to reduce Fe(III) has raised the question of whether mechanisms for dissimilatory Fe(III) reduction have been conserved throughout microbial evolution. Many studies have suggested that c-type cytochromes are integral components in elec...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2001.tb10529.x
更新日期:2001-02-20 00:00:00
abstract::Dextranase specifically hydrolyzes dextran and is used to produce functional isomalto-saccharide prebiotics. Moreover, dextranase is used as an additive in mouthwash to remove dental plaque. We cloned and expressed the dextranase gene of the marine bacterium Bacillus aquimaris S5. The length of the BaDex gene was 1788...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1093/femsle/fnab007
更新日期:2021-01-20 00:00:00
abstract::Control of Helminthosporium solani, the cause of silver scurf in potato tubers, has been impaired by selection of benzimidazole-resistant strains as a result of repeated use of the fungicide thiabendazole. Identification of thiabendazole-resistant strains of H. solani by conventional techniques takes several weeks. Pr...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1997.tb10454.x
更新日期:1997-07-15 00:00:00
abstract::A bacterial isolate, tentatively identified as Pseudomonas sp. strain TR3, was found to utilize the diaryl ester phenylbenzoate as sole source of carbon and energy. This strain has the ability to productively degrade phenylbenzoate and some substituted derivatives by a catabolic sequence which was characterized bioche...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1999.tb13700.x
更新日期:1999-07-15 00:00:00