Occurrence of Proteus mirabilis associated with two species of venezuelan oysters

Fernández-Delgado, Milagro; Contreras, Mónica; García-Amado, Maria Alexandra; Gueneau, Pulchérie; Suárez, Paula

doi:10.1590/s0036-46652007000600004

Cited by 17 publications

(17 citation statements)

References 10 publications

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“…Fernandez-Delgado et al [39] found halophilic (growth in saline concentrations from 3 to 8 %) P. mirabilis as prevailing in the bodies of two oyster species in Venezuela and resistant to several tested antibiotics (mainly tetracycline, ampicillin and penicillin, and cefoxitin and cefazolin). Also, Matyar et al [82] isolated several antibiotic-resistant P. vulgaris and P. penneri strains from the intestines of shrimps inhabiting the Iskenderun Bay, Turkey, which was most probably due to the Iskedrun Bay contamination by industrial and domestic wastes, including hospital ones.…”

Section: Proteus Spp In Animals—adverse and Friendlymentioning

confidence: 99%

“…Other marine animals that are reported to accumulate Proteus spp. from water environment are oysters [39], loggerhead turtles ( C. caretta ) [42], and green turtles ( C. mydas ) [5], although Santoro et al [127] did not find the correlation between green turtle microflora and seawater microorganisms.…”

Section: Proteus As An Indicator Of Fecal Pollutionmentioning

confidence: 99%

“…strains may be released from the intestines which are a source of drug-resistance genes [126]. Some authors [5, 39, 82] emphasize the fact that marine environment seems to be a reservoir of genes responsible for the antibiotic resistance of polluting bacteria, as many antibiotic-resistant strains, including Proteus spp., are isolated from water and sea animals (see the previous paragraph). A good example is also the Jiaozhou Bay on the western coast of the Yellow Sea, China, which is highly contaminated due to intensive industrial development and urbanization.…”

Section: Proteus As An Indicator Of Fecal Pollutionmentioning

confidence: 99%

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Significance and Roles of Proteus spp. Bacteria in Natural Environments

2016

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Proteus spp. bacteria were first described in 1885 by Gustav Hauser, who had revealed their feature of intensive swarming growth. Currently, the genus is divided into Proteus mirabilis, Proteus vulgaris, Proteus penneri, Proteus hauseri, and three unnamed genomospecies 4, 5, and 6 and consists of 80 O-antigenic serogroups. The bacteria are known to be human opportunistic pathogens, isolated from urine, wounds, and other clinical sources. It is postulated that intestines are a reservoir of these proteolytic organisms. Many wild and domestic animals may be hosts of Proteus spp. bacteria, which are commonly known to play a role of parasites or commensals. However, interesting examples of their symbiotic relationships with higher organisms have also been described. Proteus spp. bacteria present in soil or water habitats are often regarded as indicators of fecal pollution, posing a threat of poisoning when the contaminated water or seafood is consumed. The health risk may also be connected with drug-resistant strains sourcing from intestines. Positive aspects of the bacteria presence in water and soil are connected with exceptional features displayed by autochthonic Proteus spp. strains detected in these environments. These rods acquire various metabolic abilities allowing their adaptation to different environmental conditions, such as high concentrations of heavy metals or toxic substances, which may be exploited as sources of energy and nutrition by the bacteria. The Proteus spp. abilities to tolerate or utilize polluting compounds as well as promote plant growth provide a possibility of employing these microorganisms in bioremediation and environmental protection.

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Section: Proteus Spp In Animals—adverse and Friendlymentioning

confidence: 99%

Section: Proteus As An Indicator Of Fecal Pollutionmentioning

confidence: 99%

Section: Proteus As An Indicator Of Fecal Pollutionmentioning

confidence: 99%

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Significance and Roles of Proteus spp. Bacteria in Natural Environments

2016

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“…However, there are scarce reports from the Caribbean Sea. Our previous studies indicated the presence of potentially pathogenic bacteria with multiple antibiotic resistances at the northwestern coast of Venezuela (Fernández-Delgado et al, 2007, 2009). In the current work, we determined the antibiotic resistance pattern of enteric bacteria isolated from an important touristic and shellfish-growing marine area, in order to gain a basic understanding of the occurrence of resistant bacteria and the potential influence of environmental factors.…”

Section: Introductionmentioning

confidence: 96%

Multiple antibiotic resistances of enteric bacteria isolated from recreational coastal waters and oysters of the Caribbean Sea

Fernández-Delgado

Suárez

2009

Ann. Microbiol.

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This study investigated the antibiotic resistance of enteric bacteria and their association with environmental factors in a coastal area of the Caribbean Sea. Seawater and oyster samples were collected during rainy and dry seasons. Faecal indicators of seawater fulfilled international standards, except for enterococci during dry season, while in oysters were above 800 MPN/g tissue. Different cultural methods were used to isolate enteric bacteria, further identified by biochemical tests for species of the genera Escherichia, Providencia, Kluyvera, Citrobacter, Morganella, Klebsiella and Enterococcus. A total of 21 isolates presented multiple antibiotic resistances at least to five antibiotics, with higher resistance for Enterococcus durans against 20 antibiotics tested (20/20), followed by Escherichia coli (9/20). Enteric bacteria isolated from any sample source during the rainy season presented the highest antimicrobial resistance to penicillins and cephalosporins. This is the first report of multiple antibiotic resistances in enteric environmental isolates at the Caribbean Sea. This coastal environment might serve as a reservoir of antibiotic resistant bacteria and might represent public health risks associated with the use of recreational waters and the consumption of raw seafood.

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“…Some sea animals are reported to absorb and accumulate Proteus spp. such as sponges ( Spongia offinialis ), oysters and turtles . Proteus sp.…”

Section: Introductionmentioning

confidence: 99%

First‐time characterization of viable but non‐culturable Proteus mirabilis: Induction and resuscitation

Wasfi

Abdellatif

Elshishtawy

2020

J Cellular Molecular Medi

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Pathogenic bacteria can enter into a viable but non‐culturable (VBNC) state under unfavourable conditions. Proteus mirabilis is responsible for dire clinical consequences including septicaemia, urinary tract infections and pneumonia, but is not a species previously known to enter VBNC state. We suggested that stress‐induced P. mirabilis can enter a VBNC state in which it retains virulence. P. mirabilis isolates were incubated in extreme osmotic pressure, starvation, low temperature and low pH to induce a VBNC state. Resuscitation was induced by temperature upshift and inoculation in tryptone soy broth with Tween 20 and brain heart infusion broth. Cellular ultrastructure and gene expression were examined using transmission electron microscopy (TEM) and quantitative real‐time polymerase chain reaction (qPCR), respectively. High osmotic pressure and low acidity caused rapid entry into VBNC state. Temperature upshift caused the highest percentage of resuscitation (93%) under different induction conditions. In the VBNC state, cells showed aberrant and dwarf morphology, virulence genes and stress response genes (envZ and rpoS) were expressed (levels varied depending on strain and inducing factors). This is the first‐time characterization of VBNC P. mirabilis. The ability of P. mirabilis pathogenic strains to enter a stress‐induced VBNC state can be a serious public health threat.

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Occurrence of Proteus mirabilis associated with two species of venezuelan oysters

Cited by 17 publications

References 10 publications

Significance and Roles of Proteus spp. Bacteria in Natural Environments

Significance and Roles of Proteus spp. Bacteria in Natural Environments

Multiple antibiotic resistances of enteric bacteria isolated from recreational coastal waters and oysters of the Caribbean Sea

First‐time characterization of viable but non‐culturable Proteus mirabilis: Induction and resuscitation

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