Abstract:
:Bananas contain large quantities of neurochemicals. Extracts from the peel and pulp of bananas in increasing stages of ripening were prepared and evaluated for their ability to modulate the growth of non-pathogenic and pathogenic bacteria. Extracts from the peel, and to a much lesser degree the pulp, increased the growth of Gram-negative bacterial strains Escherichia coli O157:H7, Shigella flexneri, Enterobacter cloacae and Salmonella typhimurium, as well as two non-pathogenic E. coli strains, in direct relation to the content of norepinephrine and dopamine, but not serotonin. The growth of Gram-positive bacteria was not altered by any of the extracts. Supplementation of vehicle and pulp cultures with norepinephrine or dopamine yielded growth equivalent to peel cultures. Total organic analysis of extracts further demonstrated that the differential effects of peel and pulp on bacterial growth was not nutritionally based, but due to norepinephrine and dopamine. These results suggest that neurochemicals contained within foodstuffs may influence the growth of pathogenic and indigenous bacteria through direct neurochemical-bacterial interactions.
journal_name
FEMS Microbiol Lettjournal_title
FEMS microbiology lettersauthors
Lyte Mdoi
10.1111/j.1574-6968.1997.tb12651.xsubject
Has Abstractpub_date
1997-09-15 00:00:00pages
245-50issue
2eissn
0378-1097issn
1574-6968pii
S0378-1097(97)00334-0journal_volume
154pub_type
杂志文章abstract::The devR-devS two-component system of Mycobacterium tuberculosis was identified earlier and partially characterized in our laboratory. A devR::kan mutant of M. tuberculosis was constructed by allelic exchange. The devR mutant strain showed reduced cell-to-cell adherence in comparison to the parental strain in laborato...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/S0378-1097(04)00002-3
更新日期:2004-02-16 00:00:00
abstract::Calcium has been reported to play an important role in regulating the intestinal electrolyte transport via Ca2+/calmodulin (CaM) and/or protein kinase C (PKC) systems. The role of Ca2+, CaM and PKC in the pathogenesis of Campylobacter jejuni-induced fluid accumulation was studied in vivo in ligated rat ileal loops. Ca...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1993.tb06406.x
更新日期:1993-08-01 00:00:00
abstract::Atypical enteropathogenic Escherichia coli (aEPEC) is comprised of a large heterogeneous group of strains and serotypes that carry the intimin gene (eae) but no other EPEC virulence factors. In a previous study, we examined a few aEPEC strains of O157:H16 serotype from the U.S. and France and found these to be nearly ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/1574-6968.12017
更新日期:2012-12-01 00:00:00
abstract::The fungal inhibitory effects of strain Lactobacillus plantarum MiLAB 393, producing broad-spectrum antifungal compounds, were evaluated. A co-cultivation method was set up to monitor effects on fungal growth and protein expression of growing Aspergillus nidulans with L. plantarum MiLAB 393. The effects of inhibitory ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/j.femsle.2005.03.047
更新日期:2005-05-01 00:00:00
abstract::The pseudotrisaccharide allosamidin, a potent inhibitor of chitinases, retarded the fragmentation of hyphae but did not affect the fungal growth and cephalosporin-C production in Acremonium chrysogenum. In vitro inhibition of A. chrysogenum cell-bound chitinase(s) by allosamidin revealed that about 47% of the soluble ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1998.tb13091.x
更新日期:1998-07-15 00:00:00
abstract::Exopolysaccharide (EPS) was prepared by submerged mycelial culture of a newly isolated mushroom Grifola frondosa HB0071 in a 5-l stirred-tank fermenter. This fungus produced a high concentration of biomass (24.8 gl(-1) at day 4), thereby achieving high EPS concentration (7.2 gl(-1) at day 4). EPS was proven to be a pr...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/j.femsle.2005.08.021
更新日期:2005-10-15 00:00:00
abstract::The riboflavin kinase encoding gene ribR is situated within a 12 genes locus ytmI-ytnM of the Bacillus subtilis chromosome. Here we demonstrate that ribR is transcribed as part of a 10 kb ytmI-ytnM operon. The riboflavin overproduction phenotype of B. subtilis ribC mutant strains, which is a result of the strongly red...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/j.femsle.2004.11.038
更新日期:2005-02-01 00:00:00
abstract::Staphylococcus aureus represents the most prevalent cause of food-borne intoxications worldwide. While being repressed by competing bacteria in most matrices, this pathogen exhibits crucial competitive advantages during growth at high salt concentrations or low pH, conditions frequently encountered in food production ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/1574-6968.12491
更新日期:2014-07-01 00:00:00
abstract::The locus of enterocyte effacement pathogenicity island confers the attaching and effacing histopathology on epithelial cells infected with enteropathogenic and enterohemorrhagic Escherichia coli. We investigated the site of insertion of the locus of enterocyte effacement in E. coli strains in relation to their evolut...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1997.tb12704.x
更新日期:1997-11-01 00:00:00
abstract::Human T-cell leukemia virus type I (HTLV-I) is an oncogenic retrovirus that was isolated in 1980 from a patient with adult T-cell leukemia. From the numerous experiments using infected patient T-cells, transgenic mice and tissue culture transformation assays, the Tax protein has been determined to be the transforming ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章,评审
doi:10.1111/j.1574-6968.1996.tb08322.x
更新日期:1996-07-01 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
abstract::A critical step in the process of metagenome analysis is to screen for clones that contain specific genes among a large number of clones. To form one of the sequence-based screening tools of a metagenome library, we designed a format of microarray [metagenome microarray (MGA)] that is arrayed with fosmid library clone...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2008.01180.x
更新日期:2008-07-01 00:00:00
abstract::A chitinase was purified from the cytosolic fraction of the anaerobic rumen fungus Piromyces communis OTS1 by affinity chromatography using regenerated chitin, gel filtration and chromatofocusing. The chitinase was most active at pH 6.2 and at 60 degrees C in a 20-min assay. The molecular mass of the purified protein ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1996.tb08085.x
更新日期:1996-03-15 00:00:00
abstract::A 2918 bp sequence coding for the orotidine-5'-monophosphate decarboxylase enzyme (OMPD) was isolated from the genome of Myrothecium gramineum. This sequence was analysed and, remarkably, it is the first OMPD gene of a Sordariomycete that has an intron. The gene codes for an enzyme of 282 amino acids. The nucleotide s...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2006.00373.x
更新日期:2006-08-01 00:00:00
abstract::A particular property of Clostridium difficile strain C34 is an insertion of approximately 2 kb in the tcdA-C34 gene that does not hinder expression of a fully active TcdA-C34 molecule. Intoxication with TcdA-C34 induced an arborized appearance in eukaryotic cells (D-type cytopathic effect); intoxication with TcdB-C34...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2001.tb10638.x
更新日期:2001-05-01 00:00:00
abstract::During programs for the selection of enological yeasts, several hundred natural isolates are usually screened. The scope of these operations is to isolate strains possessing good fermentative properties without necessarily arriving at a precise species designation: in other words, to detect strains belonging to the Sa...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2006.00450.x
更新日期:2006-11-01 00:00:00
abstract::This communication presents experimental evidence that intact fragile (osmotic sensitive) yeasts can be electrofused and give viable hybrids. The yield increases with one order of magnitude for electrofusion of intact fragile yeasts with protoplasts of non-fragile ones. The yield of viable hybrids, obtained by electro...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/0378-1097(89)90078-5
更新日期:1989-07-01 00:00:00
abstract::The microbial community structure of two biofilters used for the oxidation of methane and organic trace gases generated in landfills was analysed by phospholipid fatty acid composition. Community structure varied with biofilter depth, reflecting varying conditions of substrate supply as well as of organic carbon conte...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/j.femsle.2004.09.013
更新日期:2004-11-01 00:00:00
abstract::Bacillus subtilis strains BS49 and BS34A, both derived from a common ancestor, carry one or more copies of Tn916, an extremely common mobile genetic element capable of transfer to and from a broad range of microorganisms. Here, we report the complete genome sequence of BS49 and the draft genome sequence of BS34A, whic...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1093/femsle/fnu050
更新日期:2015-01-01 00:00:00
abstract::Currently, interest in phage science is on the rise again as this subject remains largely unexplored, and its potential diversity mainly untapped. Here, we present phage vB_BsuP-Goe1, a new isolate that infects Bacillus subtilis The phage forms round plaques with a matt outline on agar plates containing a B. subtilis ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1093/femsle/fnw208
更新日期:2016-10-01 00:00:00
abstract::A CO-reactive hemoprotein was purified from the mitochondrial membrane fraction of Tetrahymena pyriformis. It showed absorption peaks at 615 and 455 nm in the reduced form and an alpha peak at 565 nm in the pyridine ferrohemochrome spectrum. Although the spectral properties were apparently similar to those of 'cytochr...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1993.tb06423.x
更新日期:1993-08-15 00:00:00
abstract::Probing protein extracts from exponentially growing and stationary phase cultures of Mycobacterium bovis BCG with anti-phospho amino acid antibodies revealed a 31-kDa anti-phospho threonine antibody-reactive protein specific to growing culture. The corresponding protein was purified via two-dimensional gel electrophor...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/S0378-1097(03)00664-5
更新日期:2003-10-10 00:00:00
abstract::Beauveria bassiana is an insect pathogenic fungus widely used as a biocontrol agent to infect and control insect pests. The conidium initiates pathogenesis and mediates disease transmission, however, little is known about genetic elements that control conidiation. Here, the cloning and characterization of a regulatory...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2007.00978.x
更新日期:2008-02-01 00:00:00
abstract::Contrary to its effect on rich medium, D-cycloserine showed no bactericidal effect on Zymomonas mobilis cells cultured on mineral medium. Addition of a mixture of glycine and glutamic acid to the mineral medium restored its bactericidal action. However, mutant enrichments run in these conditions were biased, with most...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1996.tb08425.x
更新日期:1996-09-01 00:00:00
abstract::Growth of Prevotella ruminicola strains B(1)4 (subsp. brevis) and D31d (subsp. ruminicola), was inhibited by protamine, a polycationic, low molecular mass protein. Results showed that protamine has a bacteriocidal effect when present in concentrations exceeding 30 micrograms ml-1. Protamine exerted its toxic effects b...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1997.tb10353.x
更新日期:1997-05-01 00:00:00
abstract::Among a few potential archezoan groups, only the Metamonada (diplomonads, retortamonads, and oxymonads) still retain the status of amitochondriate protists that diverged before the acquisition or retention of mitochondria. Indeed, finding that diplomonad genomes harbor a gene encoding a mitochondrial type chaperonin 6...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1016/S0378-1097(03)00598-6
更新日期:2003-09-26 00:00:00
abstract::Pseudomonas aeruginosa PA96 is a clinical isolate from Guangzhou, China, that is multiresistant to antibiotics. We previously described the 500-kb IncP-2 plasmid, pOZ176 that encodes many resistance genes including the IMP-9 carbapenemase. Whole-genome sequencing of PA96 enabled characterization of its genomic islands...
journal_title:FEMS microbiology letters
pub_type: 信件
doi:10.1111/1574-6968.12435
更新日期:2014-07-01 00:00:00
abstract::Neuraminidase (sialidase), a potential virulence factor in bacteria, was demonstrated in Haemophilus parasuis, an invasive swine pathogen, but not in four other pathogens of the Pasteurellaceae family: H. influenzae, H. somnus, H. paragallinarum, or Actinobacillus pleuropneumoniae. H. parasuis neuraminidase had an aci...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1997.tb10438.x
更新日期:1997-07-15 00:00:00
abstract::The structural gene, adhA, for a thermostable primary alcohol dehydrogenase was cloned from Thermoanaerobacter ethanolicus JW200. Constitutive expression from its own promoter was observed in Escherichia coli. The nucleotide sequence of adhA corresponded to an open reading frame of 1197 bp, encoding a polypeptide of 3...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.2000.tb09262.x
更新日期:2000-09-01 00:00:00
abstract::In Corynebacterium glutamicum the promoter of the araBAD Escherichia coli gene is positively regulated by both arabinose and the araC gene product, as it is the case in the natural host. If the L-arabinose inducer and an active araC gene are present, significant amounts of araBAD promoter expression take place in the ...
journal_title:FEMS microbiology letters
pub_type: 杂志文章
doi:10.1111/j.1574-6968.1999.tb13558.x
更新日期:1999-05-01 00:00:00