Evaluation of anthropogenic pollution in river water based on the genetic diversity of Aeromonas hydrophila

Korzekwa, Karol; Gołaś, Iwona; Harnisz, Monika

doi:10.2478/v10265-012-0032-6

Cited by 7 publications

(3 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The genus Aeromonas along with Pseudomonas and Vibrio are the predominant microorganisms in ponds and these bacteria may be used as good biological indicators of water quality (Rippey and Cabelli 1989;Korzekwa et al 2012). The number of Aeromonas bacteria inhabiting the water of three studied carp ponds varied from 1.93 to 2.96·10 2 CFU/ml.…”

Section: Discussionmentioning

confidence: 99%

Abundance and antibiotic resistance of Aeromonas isolated from the water of three carp ponds

2020

View full text Add to dashboard Cite

Abundance and antibiotic resistance of bacteria of the genus Aeromonas isolated from the water of three carp ponds were studied. The number of those bacteria differed between the studied ponds, sites and season. The results of the present study showed that planktonic Aeromonas inhabiting those ponds strongly differed in the resistance level to tested antibiotics. These microorganisms were the most resistant to amoxicillin, ampicillin, clindamycin and penicillin. However, all isolates Aeromonas were susceptible to gentamycin and streptomycin. Majority of bacterial strains were characterized by resistance to 4-6 of the 12 antibiotics tested. Bacterial resistance to antibiotics depended on their chemical structure. Aeromonas strains isolated from the studied ponds were the most resistant to β-lactam and lincosamides antibiotics, while the most susceptible to aminoglycosides, chloramphenicols and fluoroquinolones.

show abstract

Section: Discussionmentioning

confidence: 99%

Abundance and antibiotic resistance of Aeromonas isolated from the water of three carp ponds

2020

View full text Add to dashboard Cite

show abstract

“…Ninety-three complete reports of these elements in Aeromonas isolates from different regions and sources have been describe between 2001 and 2023 at National Center for Biotechnology Information (NCBI) [5,. The detection of Aeromonas strains harboring integrons has been recorded in 34 countries on 5 continents (Figure 2); however, it is important to highlight that in some regions of Africa and Central America, there are no reports of the presence of integrons in these bacteria, despite the fact that both are indicators of fecal and anthropogenic contamination [112][113][114][115]. In fact, these areas are low-income countries where very few resources are available for research [116].…”

Section: Frequency and Distribution Of Integrons In Aeromonasmentioning

confidence: 99%

Integrons: Genetic Dynamic Elements in Aeromonas

Rojas-Rios,

Curiel-Quesada,

Pérez-Valdespino

2024

Aeromonas - An Ubiquitous Bacteria That Infects Humans and Animals [Working Title]

View full text Add to dashboard Cite

Integrons are genetic elements able to incorporate, express, and exchange cassettes. Cassette exchanges are mediated by an integrase that excises and reinserts them via site-specific recombination between flanking att sequences. Cassettes lack for the most part a promoter, and their excision and reinsertion at the attI site, downstream a Pc promoter, render them transcriptionally active. This work documents the occurrence of complete integrons or parts of them in Aeromonas and examines the dynamics of these elements. Class 1 integrons linked to antibiotic-resistant cassettes were the most abundant in strains isolated from environmental and clinical samples. Detection of class 2 and 3 integrons was infrequent. Only one report of a class 4-like integron in Aeromonas sp. genomospecies paramedia was found, but a search of these integrons in Aeromonas genomes revealed that class 4-like integrons were the second most abundant after those belonging to class 1. In addition to complete integrons, clusters of attC sites lacking a neighboring integron-integrase (CALINs), single attC sites lacking integron-integrase (SALINs), and orphan integrase genes were found in chromosomes, and a low percentage in Aeromonas plasmids. Concerning the integron behavior, it is known to be regulated by SOS response and could be also controlled by host specific factors.

show abstract

“…MAR phenomenon was clearly observed throughout the results. Supporting data from recent studies concluded the importance of taking proper measures to control MAR Aeromonads, particularly in water sources used by humans [62][63][64][65]. Antibiotic resistance leads to increase in the risk of inappropriate therapy as well as increase of bacterial transmission between humans due to long periods of infection [66,67].…”

Section: Antibiotic Susceptibilitymentioning

confidence: 99%

An Approach Using Non‐Conventional Indicators for Detecting Microbial Water Pollution

Ezzat

2014

CLEAN Soil Air Water

View full text Add to dashboard Cite

The present study aims to investigate the suitability of the genus Aeromonas as a nonconventional microbial indicator of water quality in different Egyptian water resources; River Nile, drainage wastewater, and chlorinated drinking water. Aeromonas was detected in 71.2% of examined samples, being maximum in drainage water and minimum in River Nile and drinking water. Several positive significant relationships between Aeromonas and the corresponding heterotrophic plate count, total coliforms, fecal coliforms, and fecal streptococci were recorded, particularly in drainage water and River Nile. 81.4% of presumptive Aeromonas species were identified as A. hydrophila. The effect of seasonal variation showed maximum recovery in summer (61.5%) and spring (28.9%) compared to autumn (5.8%) and winter (3.8%). The time needed to reduce the population by 90% (T 90 ) was 55 h and the calculated decay coefficient was 0.018 h À1 .The residual chlorine efficient to inactivate A. hydrophila in drinking water supplies should be maintained at levels not less than 0.7 mg L À1 . Susceptibility of 72 isolates to 20 different antibiotics revealed recognizable multiple antibiotic resistance phenomenon toward eight (40%) of the tested antibiotics. Sensitivity was mostly directed to norfloxacin, ofloxacin, ceftriaxone, and cefotaxime. The study concluded that, supplementing the traditional indicators index of water quality with Aeromonas levels could be a simple, reliable, and inexpensive valid tool for better microbiological characterization of water.

show abstract

Evaluation of anthropogenic pollution in river water based on the genetic diversity of Aeromonas hydrophila

Cited by 7 publications

References 26 publications

Abundance and antibiotic resistance of Aeromonas isolated from the water of three carp ponds

Abundance and antibiotic resistance of Aeromonas isolated from the water of three carp ponds

Integrons: Genetic Dynamic Elements in Aeromonas

An Approach Using Non‐Conventional Indicators for Detecting Microbial Water Pollution

Contact Info

Product

Resources

About