Stimulatory effect of dihydroxyphenyl compounds on the aerotolerance of Spirillum volutans and Campylobacter fetus subspecies jejuni

Bowdre, Jean H.; Krieg, Noel R.; Hoffman, Paul S.; Smibert, Robert M.

doi:10.1128/aem.31.1.127-133.1976

Cited by 49 publications

(18 citation statements)

References 19 publications

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“…The details of the commercial production of tryptone undoubtedly vary from one manufacturer to another, and it is likely that factors such as temperature and conditions of desiccation may be responsible for the variability. For instance, if the processing were somehow to cause oxidation of some of the tyrosine in the tryptone to even micromolar amounts of dihydroxyphenyl compounds, this might profoundly influence oxygen tolerance (Bowdre et al 1976).…”

Section: Discussionmentioning

confidence: 99%

“…The hydroxyl radical scabengers included allopurinol (Moorehouse et ui. 1987), azelaic acid (Passi et al 1991), caffeine (Shi et al 1991), carnosine (Pavlov et al 1991;Salim-Hanna et al 1991), cimetidine (Uchida and Kawakishi 1990), dimethylsulphoxide (DMSO ; Cederbaum et al 1977;Repine et al 1981), dimethyl thiourea (Repine et al 1981) and thiourea (Cederbaum et al 1979). The hydrogen peroxide scavengers were bovine liver catalase (Martin et al 1976) and sodium pyruvate (Thompson et al 1951).…”

Section: Reactive Oxygen Intermediate Scavengersmentioning

confidence: 99%

“…Campylobacter species require I-lO% CO, in order to grow (Bolton and Coates 1983;Smibert 1984). One factor which influences oxygen tolerance in microaerophiles is cell density (Bowdre et al 1976;Jannasch 1977); the greatest sensitivity is exhibited by individual cells which are separated from one another on the surface of a solid culture medium (Krieg and Hoffman 1986;Lee et 01. 1988).…”

Section: Introductionmentioning

confidence: 99%

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Oxygen tolerance estimates in Campylobacter species depend on the testing medium

Hodge

Krieg

1994

Journal of Applied Bacteriology

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Oxygen tolerance of the microaerophile Campylobacter jejuni subsp. jejuni varied with different brands of complex media which were used for plating the dilute cell suspensions. The tryptone component was one factor. With some tryptones growth occurred at 21% oxygen whereas with others there was no growth at oxygen levels of 15% or higher. A chemically-defined, agar-solidified plating medium was used to estimate the oxygen tolerance of Camp. jejuni subsp. jejuni, Camp. coli and Camp. fetus subsp. fetus, and also to assess the effect of added scavengers of reactive oxygen intermediates on the oxygen tolerance. Some scavengers such as allopurinol, azelaic acid, caffeine, cimetidine, TEMPOL and pyruvate enhanced oxygen tolerance markedly whereas others such as carnosine, dimethyl thiourea, spermidine and superoxide dismutase had little effect.

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Section: Discussionmentioning

confidence: 99%

Section: Reactive Oxygen Intermediate Scavengersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Oxygen tolerance estimates in Campylobacter species depend on the testing medium

Hodge

Krieg

1994

Journal of Applied Bacteriology

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“…There is a growing body of research indicating that the host microbiota, including commensals and pathogens, may respond to the presence of catecholamines. Norepinephrine has been shown to be a beneficial growth adjuvant to E. coli in serum-based media (Kinney et al, 2000) with a primary effect of enhancing iron acquisition (Bowdre et al, 1976;Freestone et al, 2000). Further tying together the virulence systems of E. coli O157, with an norepinephrine-influenced environment within the GI tract, it has been shown that norepinephrine enhances growth and iron acquisition, effects motility, increases toxin expression, and promotes attachment of E. coli O157 in vivo (Lyte et al, 1996aFreestone et al, 1999Freestone et al, , 2000Chen et al, 2003;Green et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Escherichia coliO157:H7 gene expression in the presence of catecholamine norepinephrine

Dowd¹

2007

FEMS Microbiology Letters

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Various forms of host stresses (e.g. physiological, psychological) are thought to influence susceptibility to pathogenic microorganisms. Catecholamines such as norepinephrine are released into the GI environment during acute stress and may influence the infective process of bacterial pathogens associated with the GI tract. To examine the effects of norepinephrine on expression of virulence factors in Escherichia coli O157:H7, the clinical-type isolate EDL933 (ATCC 43895) was grown in serum-Standard American Petroleum Institute media in the presence or absence of norepinephrine. After 5 h of exposure to norepinephrine, treatment and control cultures (not exposed to norepinephrine) were harvested, their RNA isolated, and gene expression evaluated. There was a dramatic increase in the expression of virulence factor transcripts including stx1, stx2, and eae. Also induced were transcripts involved in iron metabolism. Conversely, there was comparative repression of iron acquisition and phage shock protein-related transcripts in the presence of norepinephrine. Novel observations from these data suggested that exposure to norepinephrine induced glutamate decarboxylase acid resistance as well as an SOS response in E. coli O157:H7. The results corroborate many of the previous findings detailed in the literature and provide new observations that could expand the scope of microbial endocrinology.

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“…Norepinephrine and epinephrine induce 158 and 105 genes, respectively, of which only 18 are common to both catecholamines, in the porcine respiratory pathogen Actinobacillus pleuropneumoniae (Li et al, 2012). Norepinephrine can change Campylobacter jejuni, a foodborne pathogen, from a microaerotolerant to an aerotolerant organism (Bowdre et al, 1976). As stress is an everyday factor for swine from birth until slaughter, so is the constant bi-directional communication between swine host and microbiota.…”

Section: Introductionmentioning

confidence: 99%

Review: Microbial endocrinology: intersection of microbiology and neurobiology matters to swine health from infection to behavior

Lyte

2019

Animal

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From birth to slaughter, pigs are in constant interaction with microorganisms. Exposure of the skin, gastrointestinal and respiratory tracts, and other systems allows microorganisms to affect the developmental trajectory and function of porcine physiology as well as impact behavior. These routes of communication are bi-directional, allowing the swine host to likewise influence microbial survival, function and community composition. Microbial endocrinology is the study of the bi-directional dialogue between host and microbe. Indeed, the landmark discovery of host neuroendocrine systems as hubs of host-microbe communication revealed neurochemicals act as an inter-kingdom evolutionary-based language between microorganism and host. Several such neurochemicals are stress catecholamines, which have been shown to drastically increase host susceptibility to infection and augment virulence of important swine pathogens, including Clostridium perfringens. Catecholamines, the production of which increase in response to stress, reach the epithelium of multiple tissues, including the gastrointestinal tract and lung, where they initiate diverse responses by members of the microbiome as well as transient microorganisms, including pathogens and opportunistic pathogens. Multiple laboratories have confirmed the evolutionary role of microbial endocrinology in infectious disease pathogenesis extending from animals to even plants. More recent investigations have now shown that microbial endocrinology also plays a role in animal behavior through the microbiota-gut-brain axis. As stress and disease are ever-present, intersecting concerns during each stage of swine production, novel strategies utilizing a microbial endocrinology-based approach will likely prove invaluable to the swine industry.

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Stimulatory effect of dihydroxyphenyl compounds on the aerotolerance of Spirillum volutans and Campylobacter fetus subspecies jejuni

Cited by 49 publications

References 19 publications

Oxygen tolerance estimates in Campylobacter species depend on the testing medium

Oxygen tolerance estimates in Campylobacter species depend on the testing medium

Escherichia coliO157:H7 gene expression in the presence of catecholamine norepinephrine

Review: Microbial endocrinology: intersection of microbiology and neurobiology matters to swine health from infection to behavior

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