Analysis of antibiotic multi-resistant bacteria and resistance genes in the effluent of an intensive shrimp farm (Long An, Vietnam)

Pham, Thi Thu Hang; Rossi, Pierre; Dinh, Hoang Dang Khoa; Pham, Ngoc Tu Anh; Tran, Phuong Ha Lien; Ho, To Thi Khai Mui; Dinh, Quoc Tuc; Alencastro, Luiz Felippe De

doi:10.1016/j.jenvman.2018.02.089

Cited by 58 publications

(29 citation statements)

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“…Esto último se ha convertido en un problema de salud pública, dado que la producción de pollo es el primer eslabón de la cadena productiva, derivando en la transmisión de microorganismos y trazas de antibióticos como también detritus metabólicos que afectan la salud humana del consumidor final (6) . Algunos estudios demuestran efectos positivos de las bacterias ácido lácticas y su potencial como agentes moduladores de la microbiota normal del tracto digestivo y su consiguiente salud intestinal, lo que indica que pueden convertirse en una alternativa a los APC y aportar en la solución de problemas prioritarios de salud pública derivados de la ingesta de pollo considerada como la principal carne de consumo humano (8) .…”

Section: Discussionunclassified

“…Entre los problemas del uso de los APC se encuentra la alteración de la microbiota normal y con ello el metabolismo intestinal de las aves, además de la selección positiva de bacterias resistentes a este tipo de moléculas (4,5) . Esto último se ha convertido en un problema de salud pública, dado que la producción de pollo es el primer eslabón de la cadena productiva, derivando en la transmisión de microorganismos y trazas de antibióticos, como también detritus metabólicos que afectan la salud humana del consumidor final (6) .…”

Section: Introductionunclassified

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Adición de un probiótico de Lactobacillus plantarum microencapsulado en el alimento para pollos

2021

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Introducción: En producción avícola el uso de antibióticos promotores del crecimiento es limitado, debido al incremento de resistencia bacteriana. Una alternativa evalúa los probióticos microencapsulados y su efecto en la salud intestinal. Objetivo: Determinar el efecto de Lactobacillus plantarum microencapsulado sobre parámetros intestinales e inmunológicos en pollos de engorde. Materiales y métodos: A 240 pollos Ross-308-AP de un día de nacidos se suministró alimento con o sin adición de probiótico bajo el siguiente modelo: sin probiótico-(T0), con probiótico comercial-(T1), con Lactobacillus plantarum microencapsulado-(T2) y sin microencapsular-(T3). Lactobacillus plantarum ATCC-8014 se microencapsuló mediante secado por aspersión, determinando su viabilidad en (%). Se evaluaron parámetros intestinales, morfo-histopatológicos e inmunológicos por Azul de Alcian, microscopia de barrido e inmunohistoquímica y la abundancia microbial por UFC/mL. Resultados: El microencapsulado confirió una viabilidad in vivo de Lactobacillus plantarum del 88,1%. El tratamiento T2 mejoró los parámetros inmunológicos y confirió beneficios intestinales con una abundancia de bacterias benéficas (Lactobacillus) de (9,13x105-UFC/mL), significativamente mayor a la encontrada en los tratamientos T1 (8,91x105) y T3 (8,23x105) y el control T0 (9,18x104), (p<0,05). Conclusiones: La adición de Lactobacillus plantarum microencapsulado en alimento para pollos mejora parámetros inmunológicos y confiere mayor abundancia de bacterias benéficas presentes en la microbiota intestinal.

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Section: Discussionunclassified

Section: Introductionunclassified

Adición de un probiótico de Lactobacillus plantarum microencapsulado en el alimento para pollos

2021

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“…Effluent would comply with wastewater discharge standards in Thailand and Vietnam. For the case, shrimp farm wastewater with antibiotics (Can Gio, Vietnam) is a viable target for vertical flow CW (Pham et al, 2018). In industrial and cattle wastewater, it contains nutrient and micro-pollutants in urine and faeces that also effectively removed and recovered 80% N by CW (Libralato et al, 2012).…”

Section: Practical Applicationsmentioning

confidence: 99%

Removal and monitoring acetaminophen-contaminated hospital wastewater by vertical flow constructed wetland and peroxidase enzymes

Koottatep

Chapagain

et al. 2019

Journal of Environmental Management

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Hospital wastewater contains acetaminophen (ACT) and nutrient, which need adequate removal and monitoring to prevent impact to environment and community. This study developed a pilot scale vertical flow constructed wetland (CW) to (1) remove high-dose ACT and pollutants in hospital wastewater and (2) identify the correlation of peroxidase enzyme extruded by Scirpus validus and pollutants removal efficiency. By that correlation, a lowcost method to monitor pollutants removal was drawn. Plants, such as Scirpus validus, generated peroxidase enzymes to alleviate pollutants' stress. Results showed that the CW removed 3.5 to 6 logs of initial concentration 10 mg ACT/L to a recommended level for drinking water. The CW eliminated COD, TKN and TP efficiently, meeting the wastewater discharged standards of Thailand and Vietnam. By various multivariable regression models, concentrations of ACT in CW effluent and enzymes in S. validus exhibited a significant correlation (p < 0.01, R 2 = 68.3%). These findings suggested that (i) vertical flow CW could remove high-dose ACT and nutrient and (ii) peroxidase enzymes generated in S. validus, such as soluble and covalent ones, could track ACT removal efficiency. This would help to reduce facilities and analytical cost of micro-pollutants.

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“…Plasmids encoding for resistance mechanisms to antibiotics confer an immediate advantage to their host fitness under selection for antibiotics resistance. Such plasmids are often found in ecosystems exposed to fluctuating levels of antibiotics (e.g., Pham et al, 2018;González-Plaza et al, 2019). Nonetheless, many plasmids found in nature are lacking a clear trait that is advantageous to the host (i.e., 'cryptic' plasmids).…”

Section: Introductionmentioning

confidence: 99%

Intracellular Competitions Reveal Determinants of Plasmid Evolutionary Success

et al. 2020

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Plasmids are autonomously replicating genetic elements that are ubiquitous in all taxa and habitats where they constitute an integral part of microbial genomes. The stable inheritance of plasmids depends on their segregation during cell division and their longterm persistence in a host population is thought to largely depend on their impact on the host fitness. Nonetheless, many plasmids found in nature are lacking a clear trait that is advantageous to their host; the determinants of plasmid evolutionary success in the absence of plasmid benefit to the host remain understudied. Here we show that stable plasmid inheritance is an important determinant of plasmid evolutionary success. Borrowing terminology from evolutionary biology of cellular living forms, we hypothesize that Darwinian fitness is key for the plasmid evolutionary success. Performing intracellular plasmid competitions between non-mobile plasmids enables us to compare the evolutionary success of plasmid genotypes within the host, i.e., the plasmid fitness. Intracellular head-to-head competitions between stable and unstable variants of the same model plasmid revealed that the stable plasmid variant has a higher fitness in comparison to the unstable plasmid. Preemptive plasmid competitions reveal that plasmid fitness may depend on the order of plasmid arrival in the host. Competitions between plasmids characterized by similar stability of inheritance reveal plasmid fitness differences depending on the plasmid-encoded trait. Our results further reveal that competing plasmids can be maintained in coexistence following plasmid fusions that maintain unstable plasmid variants over time. Plasmids are not only useful accessory genetic elements to their host but they are also evolving and replicating entities, similarly to cellular living forms. There is a clear link between plasmid genetics and plasmid evolutionary success-hence plasmids are evolving entities whose fitness is quantifiable.

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Analysis of antibiotic multi-resistant bacteria and resistance genes in the effluent of an intensive shrimp farm (Long An, Vietnam)

Cited by 58 publications

References 46 publications

Adición de un probiótico de Lactobacillus plantarum microencapsulado en el alimento para pollos

Adición de un probiótico de Lactobacillus plantarum microencapsulado en el alimento para pollos

Removal and monitoring acetaminophen-contaminated hospital wastewater by vertical flow constructed wetland and peroxidase enzymes

Intracellular Competitions Reveal Determinants of Plasmid Evolutionary Success

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