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

Fernández-Delgado, Milagro; Suárez, Paula

doi:10.1007/bf03175123

Cited by 12 publications

(6 citation statements)

References 30 publications

(45 reference statements)

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“…For these drugs the percentages of resistance in the present study were considerably lower: 2.2% and 0%, respectively. While ampicillin resistance was observed in both the studies of Bennani et al 22 and Fernández-Delgado and Suárez 18 (4.3% and 20.0%, respectively), no ampicillin resistant strain was found in the present study. A higher percentage (33.3%) of Enterococcus spp.…”

Section: Antimicrobial Resistance Profile (Amr) For Enterococcus Sppcontrasting

confidence: 65%

“…Pearson productmoment correlation coefficient was -0.310 (meaning no correlation) for E. coli and Enterococcus spp. MPN mean, quartiles, 95% confidence interval and standard deviation are represented in the graph on Figure 1 Fernández-Delgado and Suárez 18 , Silva et al 19 and Morelli et al 20 , analyzing Crassostrea rhizophorae samples and Fernández-Delgado and Suárez 18 , in their study of Isognomon alatus, found MPN values to Enterococcus spp. from 16,000/g to ≥ 160,000/g, with means of 217.6/g and 242/g and from 200/g to 800/g, respectively, that are significantly higher MPN values than the ones from the present study.…”

Section: Enterococcus Spp Mpn and Correlation To E Coli Mpnmentioning

confidence: 96%

“…isolates were resistant to at least one antimicrobial agent. Bennani et al 22 found 54.4% and Fernández-Delgado and Suárez 18 found 100% of the Enterococcus spp. isolates with some AMR.…”

Section: Antimicrobial Resistance Profile (Amr) For Enterococcus Sppmentioning

confidence: 96%

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Enterococcus spp. Resistant to Multiple Antimicrobial Drugs and Determination of Fecal Contamination Levels in Mangrove Oysters (Crassostrea rhizophorae)

Rubião

Franco

Mesquita

et al. 2017

Braz. arch. biol. technol.

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The aim of this study was to determine and compare the Most Probable Number (MPN) of Total Coliforms (TC), Escherichia coli and Enterococcus spp. and to characterize the antimicrobial resistance profiles of Enterococcus spp. isolated from oysters collected in the Barra de Guaratiba Mangrove, Rio de Janeiro, Brazil. The enumeration of E. coli has been used to indicate fecal contamination and hygienic-sanitary conditions of bivalve molluscs. Enterococci are capable to transfer several antimicrobial resistance genes to pathogenic bacteria, including those from Gram-negative group. The oysters were bought from local fishermen and a total of 123 individuals were analyzed. The TC, E. coli and Enterococcus spp. MPN mean were 26,300/100 g, 3,260/100 g and 2,820/100 g, respectively. The only correlation found was between TC and E. coli. Two strains of Enterococcus spp. were resistant to three different antimicrobial categories, including a high level resistance to streptomycin. One strain presented intermediate resistance to vancomycin. The E. coli levels exceeded the limits established by international legislation. This microbiological contamination in oysters reflects the water pollution and indicates a probable contamination of other seafood species from this mangrove, which can represent a risk for consumers and a threat to the environment and public health.

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Section: Antimicrobial Resistance Profile (Amr) For Enterococcus Sppcontrasting

confidence: 65%

Section: Enterococcus Spp Mpn and Correlation To E Coli Mpnmentioning

confidence: 96%

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Enterococcus spp. Resistant to Multiple Antimicrobial Drugs and Determination of Fecal Contamination Levels in Mangrove Oysters (Crassostrea rhizophorae)

Rubião

Franco

Mesquita

et al. 2017

Braz. arch. biol. technol.

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“…Recently, more attention has been focused on E. coli T90, as a result of increasing water pollution, antibiotic resistance, and enterophatogenicity in the environment (Araujo et al, 2016;Carneiro et al, 2015;Fernández-Delgado and Suárez 2009;Griffith et al, 2016;Nataro and Kaper, 1998;Omar, 2010;Pommepuy et al, 1996b;USEPA, 2009). Notwithstanding this, it is important to highlight that although there is a relationship between E. coli bacterial counts and sewage, no relationship has currently been established between E. coli counts and pathogenic bacteria (Carneiro et al, 2015;Omar, 2010).…”

Section: Adequacy Of E Coli Parameters For Outfall-plume Modelingmentioning

confidence: 99%

Critical evaluation of the factors affecting Escherichia coli environmental decay for outfall plume models

Carneiro¹,

Côrtes²,

Wasserman³

2018

Rev. ambiente água

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The Escherichia coli T90 parameter is widely employed in outfall plume hydrodynamic models. Although there is a great deal of academic literature estimating T90, no standard methodology has been validated so far. Estimation of die-off rates should consider many other biological, chemical and physical processes. Over the last three decades, while a great deal of new knowledge about microbial biology and ecology has become available, it has not been fully incorporated into the overall research. Consequently, hydrodynamic models of sewage plumes lack consistency with environmental dynamics and frequently do not fully reproduce processes. This article scrutinized the relevant works that could improve T90 assessment using the most robust and realistic approaches. The most important related literature since the 1990s was considered, together with earlier relevant works. The research focused on techniques and methodologies, especially their ecologic and cellular biology aspects. A brief discussion of the methods applied to evaluate the T90 of bacteria examined aspects like representativeness of incubation, incubation scale, measurement procedures and models' representations of bacterial decay. The factors affecting population decay, such as solar radiation, salinity and interaction with solids, were considered in the light of the very large literature registry. Finally, biological aspects affecting decay, like predation and genetic resistance, were also analyzed. The resulting updated understanding of T90 may contribute to better managerial procedures that could improve water quality in freshwater and coastal systems, and consequently improve human health outcomes.Keywords: bacteria, environmental decay, water quality. modelos hidrodinâmicos, não existe uma padronização metodológica para sua avaliação que seja validada até hoje. Além das taxas de decaimento, muitos outros processos biológicos, químicos e físicos deveriam ser considerados nas modelagens hidrodinâmicas. Nas últimas três décadas, embora um extenso conhecimento sobre biologia e ecologia microbiana tenha sido desenvolvido, pouco deste conhecimento foi incorporado às aplicações. Consequentemente, os modelos de plumas de esgotos não lograram reproduzir de maneira fiel os processos ambientais. No presente artigo, os trabalhos relevantes que poderiam melhorar a determinação do T90, sob abordagens mais robustas e realistas foram revisados. A literatura mais relevante desde os anos 1990 foi considerada, juntamente com alguns trabalhos relevantes mais antigos. A pesquisa focou em técnicas e metodologias de avaliação de aspectos ecológicos e de biologia celular. Uma breve discussão dos métodos aplicados à avaliação do T90 examinou aspectos como a representatividade das incubações, escala dos experimentos de incubação e procedimentos de medição, com ênfase em modelos de decaimento bacteriano. Os fatores que afetam o decaimento bacteriano como radiação solar, salinidade e interação com sólidos foram considerados à luz do extenso registro da literatura. Finalm...

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Section: Adequacy Of E Coli Parameters For Outfall-plume Modelingmentioning

confidence: 99%

Untitled

2018

Rev. ambiente água

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This graph shows the influence of rainfall on the seasonal variation in cadmium (Cd) concentration in water samples from five reservoirs (R) and an artesian well (home). Intensive farming using agrochemicals (fertilizers and pesticides) can increase heavy metal concentrations in the soil-water-plant system, especially in the case of elements poorly retained by the soil and easily lost to leaching. Source: SILVA, L. S. et al. Heavy metals in waters used for human consumption and crop irrigation. Rev. Ambient. Água, Taubaté, vol. 13 n. 4, p. 1-10, 2018 This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Heavy metals in waters used ABSTRACTThe consumption of contaminated water is a major source of heavy metal contamination in humans and animals. This study therefore aimed to assess Cd, Cu, Mn, Ni, Pb, and Zn levels in water used for human and animal consumption and vegetable crop irrigation in Camocim de São Félix, Pernambuco, Brazil. Water samples were collected on the studied farms from an artesian well and reservoirs used for human and animal consumption as well as for crop irrigation. The results showed that concentrations of Cd (> 0.001 mg L -1 ), Ni (> 0.025 mg L -1 ) and Pb (> 0.01 mg L -1 ) were above the maximum allowable limits established under Brazilian law, indicating the need for a preventive monitoring program and immediate intervention initiatives aimed at the sources of contamination. The results demonstrate the need to quantify heavy metal content in vegetable crops, since their contamination by irrigation water may make them harmful to human health. Rainfall has a seasonal effect on heavy metal concentrations in water, showing a significant effect on Pb levels, whereas Cd and Ni content was less dependent on seasonal variation. e na irrigação de hortaliças no município de Camocim de São Félix (PE). Nas propriedades agrícolas, as amostras de água analisadas foram coletadas de poço artesiano e de reservatórios destinados ao consumo humano, animal e irrigação das lavouras. Os resultados demonstraram que as águas analisadas no presente estudo apresentaram concentrações de Cd (> 0,001 mg L -1 ), Ni (> 0,025 mg L -1 ) e Pb (> 0,01 mg L -1 ) superiores aos teores máximos permitidos indicados pela legislação brasileira, sinalizando a necessidade de um programa de monitoramento preventivo e ações de intervenção imediata das fontes de contaminação. Os resultados indicam a necessidade de quantificação das concentrações de metais pesados nas hortaliças, visto que contaminadas pelas águas de irrigação podem ser uma fonte nociva à saúde humana. A precipitação pluviométrica tem influência sobre a variação sazonal dos teores dos metais nas águas, com maior efeito na concentração de Pb e influência moderada nas concentrações de Cd e Ni.Palavras-chave: agroquímicos, cádmio, chumbo, elementos-traço, poluição difusa.

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

Cited by 12 publications

References 30 publications

Enterococcus spp. Resistant to Multiple Antimicrobial Drugs and Determination of Fecal Contamination Levels in Mangrove Oysters (Crassostrea rhizophorae)

Enterococcus spp. Resistant to Multiple Antimicrobial Drugs and Determination of Fecal Contamination Levels in Mangrove Oysters (Crassostrea rhizophorae)

Critical evaluation of the factors affecting Escherichia coli environmental decay for outfall plume models

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