Abstract:
:This study was undertaken to determine if direct cytotoxicity (DC) against herpes simplex virus infected cells, perhaps mediated by T cells, could be demonstrated in individuals subject to recurrent herpes labialis. The mononuclear cells from 7 out of 17 individuals with recurrent herpes expressed DC whereas no DC was ever exhibited by 7 individuals without a previous history of herpes infections. Several approaches were used to show that the cytotoxicity being detected was predominately of the direct type rather than antibody-dependent cell cytotoxicity (ADCC). Since the effector cells of the DC were sensitive to trypsin treatment and behaved as do natural killer (NK) cells upon cell fractionation, the results were taken to imply that the DC was attributable to a NK-effector cell type rather than a classical T lymphocyte.
journal_name
Can J Microbioljournal_title
Canadian journal of microbiologyauthors
Fujimiya Y,Babiuk LA,Rouse BTdoi
10.1139/m78-177subject
Has Abstractpub_date
1978-09-01 00:00:00pages
1076-81issue
9eissn
0008-4166issn
1480-3275journal_volume
24pub_type
杂志文章abstract::The aim of this study was to assess the influence of sodium content on the microbiota on the surface of ready-to-eat (RTE) meat products purchased from the retail market in Canada. Products, including sliced and sausage-type deli meats, were analysed with culture-dependent and culture-independent methods. Bacteria wer...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/cjm-2014-0630
更新日期:2015-02-01 00:00:00
abstract::HPr is a protein of the phosphoenolpyruvate:sugar phosphotransferase transport system (PTS). In gram-positive bacteria, HPr can be phosphorylated on Ser-46 by the kinase/phosphorylase HprK/P and on His-15 by phospho-enzyme I (EI~P) of the PTS. In vitro studies with purified HPrs from Bacillus subtilis, Enterococcus fa...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w08-085
更新日期:2008-11-01 00:00:00
abstract::Antagonistic activity of the bacterium Pseudomonas cepacia against Trichoderma viride was greatly influenced by nutritional and environmental conditions. Xylose and trehalose strongly enhanced the antifungal activity of P. cepacia, whereas mannitol and glucose had little effect. The carbon sources that enhanced the an...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m91-152
更新日期:1991-11-01 00:00:00
abstract::Fifty-four strains of Neisseria gonorrhoeae were examined for their ability to be agglutinated by various lectins. Wheat germ agglutinin, ricin, soybean lectin, and peanut agglutinin agglutinated all strains tested. Dolichos biflorus, Sophora japonica, Maclura pomifera, Ulex Europaeus, Lens culinaris, Canavalia ensifo...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m80-078
更新日期:1980-04-01 00:00:00
abstract::Several physiological groups of bacteria were examined for the presence of a cytochrome b - like pigment which is demonstrable in dithionite-reduced minus substrate-reduced difference spectra. This pigment is characterized by an unusually high alpha band at 567 nm, a low concentration relative to conventional cytochro...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m83-177
更新日期:1983-09-01 00:00:00
abstract::Bovine tuberculosis is still rife in Latin America, producing huge economic losses. There are very few studies of the way this disease is spread through this geographical region, particularly in countries that border those that are almost free of Mycobacterium bovis. In this work, we have analyzed the spacer oligonucl...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w05-083
更新日期:2005-11-01 00:00:00
abstract::Streptomyces echinatus A8331 cultured on a maltose minimal salts medium normally produces a single antibiotic, echinomycin (quinomycin A), containing two quinoxaline-2-carbonyl chromophores. Echinomycin is powerfully active against experimental tumours and can be assayed by its activity against Gram-positive bacteria....
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m84-065
更新日期:1984-04-01 00:00:00
abstract::A total of 230 strains of metal-tolerant bacteria from water and sediment samples collected in Chesapeake Bay were isolated on a medium containing cobalt, lead, mercury, or molybdenum. In addition, a set of 71 cultures were simultaneously isolated on glucose tryptone yeast extract agar medium without metals. Twenty-th...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m77-212
更新日期:1977-10-01 00:00:00
abstract::Alkaline phosphatase (APase) was present in the bovine rumen in both cell-free and cell-associated states and levels of the enzyme varied with dietary regime. Reaction product deposition showed that the enzyme was associated with the mixed bacterial population. No enzyme was observed to be associated with protozoa. Tr...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-111
更新日期:1976-05-01 00:00:00
abstract::The physiological characteristics and fatty acid composition of 40 strains of Yarrowia lipolytica isolated from irradiated poultry meat, commercial chilled foods, the superficial water of lagoons of an Italian river delta, and commercial light butter were compared. Discriminant analysis of the results permitted the 40...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m94-008
更新日期:1994-01-01 00:00:00
abstract::We have previously reported that the lethal toxicity of 5-fluorouracil (5-FU) in specific-pathogen-free mice is due to an indigenous infection with Escherichia coli (K. Nomoto, T. Yokokura, Y. Yoshikai, et al. Can. J. Microbiol. 37:244-247, 1991). In the present study, we demonstrate that nonspecific immunostimulation...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m92-126
更新日期:1992-08-01 00:00:00
abstract::In the divE mutant, which has a temperature-sensitive mutation in the tRNA1(Ser) gene, the synthesis of beta-galactosidase is dramatically decreased at the non-permissive temperature. In Escherichia coli, the UCA codon is only recognized by tRNA1(Ser). Several genes containing UCA codons are normally expressed at 42 d...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:
更新日期:2000-06-01 00:00:00
abstract::Enzymes induced by two Rhizobium trifolii bacteriophages caused depolymerization of exopolysaccharides from most R. trifolii and R. leguminosarum strains tested, but did not, in general, attack the exopolysaccharides of R. meliloti, the slow-growing rhizobia, or Agrobacterium. Ca2+ and (or) Mg2+ were required for enzy...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m75-239
更新日期:1975-10-01 00:00:00
abstract::The 16S-23S rDNA spacer of the type strain (ATCC 35879) of Xylella fastidiosa was amplified by PCR, cloned, and sequenced. The spacer sequence (455 bp) contains two tRNA (tRNA(ala) and tRNA(ile)) genes. Identical tRNA genes were also found in the 16S-23S spacer sequences of all the 51 strains of X. fastidiosa retrieve...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w00-114
更新日期:2000-12-01 00:00:00
abstract::A purified lipopolysaccharide (LPS) isolated from the rickettsial agent of Q fever, Coxiella burnetii phase 1, possesses some of the in vivo and in vitro biological properties previously only associated with bacterial endotoxins. The Coxiella LPS is mitogenic for guinea pig leukocytes, induces non-specific resistance ...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m78-259
更新日期:1978-12-01 00:00:00
abstract::Lyme disease is a tick-borne disease that is emerging in Canada. The disease is caused by spirochetes of the Lyme borreliosis group, which is expanding as new species are discovered. In Canada, Lyme disease risk has so far been assessed primarily by detection of Borrelia burgdorferi sensu stricto. Of Ixodes scapularis...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/cjm-2018-0376
更新日期:2019-02-01 00:00:00
abstract::Rhizobia are used exclusively in agricultural systems for enhancing the ability of legumes to fix atmospheric nitrogen. Knowledge about the indigenous population is necessary for the selection and application of inoculant strains. In this study, we have assessed the genetic diversity of Bradyrhizobium strains isolated...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w00-139
更新日期:2001-02-01 00:00:00
abstract::The purpose of this study was to examine antimicrobial activity of endophytic fungi isolated from the leaves, stems, and roots of 54 species of Orchidaceae collected in a Brazilian tropical ecosystem. In total, 382 filamentous fungi and 13 yeast isolates were obtained and cultured to examine the production of crude ex...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/W09-101
更新日期:2009-12-01 00:00:00
abstract::Dithiothreitol reacted, at pH 9.0, with the isolated cell walls of Methanospirillum hungatii, to release about 23% of the cell wall dry weight as a high molecular weight fraction (> 0.5 million daltons). Untreated walls consisted of 70% amino acids, 11% lipid, and 6.6% carbohydrate. Sugars were identified as rhamnose,...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m80-017
更新日期:1980-02-01 00:00:00
abstract::Several probes for measuring dissolved carbon dioxide (CO2) concentration were installed in a 68-litre fermentor and their effectiveness compared. Submerged silastic rubber tubing gave reproducible results over a wide range of operating conditions and was generally superior to all other probes evaluated. The silastic ...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m76-007
更新日期:1976-01-01 00:00:00
abstract::Large numbers of minute, flat, long, straight, but often broken structures were observed in aqueous extracts of soil. We have applied the purely descriptive term 'tubules' to these structure, because they apparently became flattened during preparation for electron-microscopic viewing. The tubules appeared to be compos...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m79-105
更新日期:1979-06-01 00:00:00
abstract::Polynucleotide sequences among 24 motile and 11 non-motile aeromonads were studied by analysis of deoxyribonucleic acid - deoxyribonucleic acid (DNA-DNA) duplexes with endonuclease S1. In addition, DNA base composition (mole % guanine and cytosine (G + C)) and relative genome sizes were determined for selected strains...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m79-083
更新日期:1979-05-01 00:00:00
abstract::To expand current knowledge on the molecular aspects of alkaline phosphatase PhoX in shallow eutrophic freshwaters, we investigated the genetic diversity and abundance of the PhoX-encoding gene (phoX) in 4 ecological regions in Lake Taihu, China, following a gradient in total phosphorus concentrations ranging from hyp...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/cjm-2013-0755
更新日期:2014-03-01 00:00:00
abstract::Listeria monocytogenes and Listeria innocua differ markedly in virulence but are indistinguishable by classical taxonomic criteria. Both species are actively motile and produce abundant flagellin at 22 degrees C. We have found, however, noticeable differences between L. monocytogenes and L. innocua in motility and fla...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m95-076
更新日期:1995-07-01 00:00:00
abstract::Surface oxidation of sulfides and copper (Cu) activation are 2 of the main processes that determine the efficiency of flotation. The present study was developed with the intention to ascertain the role of the phenomena in the biomodification of sulfides by Acidithiobacillus ferrooxidans culture (cells and growth me...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w2012-072
更新日期:2012-09-01 00:00:00
abstract::The oomycetes, a distinct phylogenetic lineage of fungus-like microorganisms, are heterokonts (stramenopiles) belonging to the supergroup Chromalveolata. Although the complete genomic sequences of a number of oomycetes have been reported, little information regarding the introns therein is available. Here, we investig...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w10-103
更新日期:2011-02-01 00:00:00
abstract::Endophytic microorganisms reside asymptomatically within plants and are a source of new bioactive products for use in medicine, agriculture, and industry. Colletotrichum (teleomorph Glomerella) is a fungus widely cited in the literature as a producer of antimicrobial substances. Identification at the species level, ho...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/w09-059
更新日期:2009-09-01 00:00:00
abstract::In both relA+ and relA- derivatives, the biosynthesis of peptidoglycan, lipid intermediates, and nucleotide precursors abruptly halted at the onset of diauxic lag from glucose to lactose with a concomitant accumulation of guanosine 5'-diphosphate 3'-diphosphate (ppGpp). These results are consistent with the proposal t...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m79-188
更新日期:1979-10-01 00:00:00
abstract::Schizophyllum commune Fr. was shown, by light, scanning, and transmission electron microscopy, to be a destructive mycoparasite on several phytopathogenic and nematode-trapping fungi. The hyphae of S. commune coiled around host hyphae and fruiting structures and penetrated them by means of either unspecialized hyphae ...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m78-131
更新日期:1978-07-01 00:00:00
abstract::Seventeen of 22 group A meningococcal strains were separated into four serotypes by a microbactericidal assay using group A antisera. In addition, 6 of 19 of these strains were killed by a group B antiserum and similar cidal patterns were obtained with a group C antiserum. There was little correlation between type and...
journal_title:Canadian journal of microbiology
pub_type: 杂志文章
doi:10.1139/m79-139
更新日期:1979-08-01 00:00:00