Occurrence and distribution of microbial pollutants in coastal areas of the Adriatic Sea influenced by river discharge

Basili, Marco; Campanelli, Alessandra; Frapiccini, Emanuela; Luna, Gian Marco; Quero, Grazia Marina

doi:10.1016/j.envpol.2021.117672

Cited by 21 publications

(15 citation statements)

References 71 publications

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“…Moreover, not all the assembled contigs were ascribable to known plasmids, which suggests that genetic determinants of virulence and pathogenesis cannot in principle be transmitted by conjugation. Nevertheless, we were able to identify antimicrobial genetic determinants in two B. ceti genomic samples from the Adriatic Sea, a Mediterranean region that is re‐known for being subjected to high anthropogenic pressure (Basili et al, 2021 ; Bruschi et al, 2021 ). These aspects, combined with the genome closeness observed in our B. ceti and B. pinnipedialis genomic data set, lead to the hypothesis that these bacteria have a natural tendency to remain confined to their particular ecological niche with few opportunities for genomic exchange with other bacterial populations.…”

Section: Discussionmentioning

confidence: 99%

Brucella ceti and Brucella pinnipedialis genome characterization unveils genetic features that highlight their zoonotic potential

2022

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The Gram-negative bacteria Brucella ceti and Brucella pinnipedialis circulate in marine environments primarily infecting marine mammals, where they cause an often-fatal disease named brucellosis. The increase of brucellosis among several species of cetaceans and pinnipeds, together with the report of sporadic human infections, raises concerns about the zoonotic potential of these pathogens on a large scale and may pose a threat to coastal communities worldwide. Therefore, the characterization of the B. ceti and B. pinnipedialis genetic features is a priority to better understand the pathological factors that may impact global health. Moreover, an in-depth functional analysis of the B. ceti and B. pinnipedialis genome in the context of virulence and pathogenesis was not undertaken so far. Within this picture, here we present the comparative whole-genome characterization of all B. ceti and B. pinnipedialis genomes available in public resources, uncovering a collection of genetic tools possessed by these aquatic bacterial species compared to their zoonotic terrestrial relatives. We show that B. ceti and B. pinnipedialis genomes display a wide host-range infection capability and a polyphyletic phylogeny within the genus, showing a genomic structure that fits the canonical definition of closeness. Functional genome annotation led to identifying genes related to several pathways involved in mechanisms of infection, others conferring pan-susceptibility to antimicrobials and a set of virulence genes that highlight the similarity of B. ceti and B. pinnipedialis genotypes to those of Brucella spp. displaying human-infecting phenotypes.

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Section: Discussionmentioning

confidence: 99%

Brucella ceti and Brucella pinnipedialis genome characterization unveils genetic features that highlight their zoonotic potential

2022

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“…Wastewater treatment plants are non-existent. Naturally, any absence or defect in the collective sanitation system can lead to the discharge of untreated water into the aquatic environment, resulting in the introduction of potentially pathogenic micro-organisms into the natural environment (Basili et al 2021;Rodríguez et al 2021;Oduro et al 2023). Non-sewage facilities can also generate contamination if they do not comply and discharge untreated effluent into the natural environment (Mohammed et al 2012;Soto-Varela et al 2021).…”

Section: Discussionmentioning

confidence: 99%

“…Microbiological pollution represents one of the major problems to which coastal and marine environments are subjected (Dang & Lovell 2016;Basili et al 2021;Oduro et al 2023). It refers to the presence of microbial organisms in these ecosystems, such as bacteria, viruses, or parasites, some of which may be pathogenic to humans or animals (Nimnoi & Pongsilp 2020).…”

Section: Introductionmentioning

confidence: 99%

Influence of tides on the dissemination and related health risks of intestinal helminths along the Kribi beaches (Atlantic Coast, Southern Cameroon)

Nana,

Tchakonté,

Pahane Mbiada

et al. 2024

J. Helminthol.

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Kribi is a seaside town that welcomes thousands of tourists each year. However, the poor sanitation condition of its beaches along the Atlantic coast is not without risk for visitors. In this study, we used the formol-ether concentration technique to identify and quantify larvae or eggs of intestinal helminths in waters of three regularly visited Kribi beaches (Mpalla, Ngoyè, and Mboamanga). Results revealed that all identified larvae and eggs were cestodes (Hymenolepis nana) and nematodes (Strongyloides sp., Ascaris sp., Ancylostoma duodenale and Trichuris trichiura). All the helminth eggs and larvae showed high abundance at low tide during rainy seasons. Ancylostoma duodenale eggs, totally absent at Mpalla, were densely present at low tide at Ngoyè (301 ± 15 eggs/L). Trichuris trichiura eggs showed the lowest abundance (0 to 62 eggs/L) at all sites. Abiotic variables indicated that waters at the various beaches were basic (pH: 8.75–9.77), generally warmer (32.44°C at Mpalla in the Short Rainy Season), more oxygenated at low tide, and moderately mineralized at high tide. Positive and significant correlations were observed at Ngoyè at low tide between Strongyloides sp. larvae and dissolved oxygen (P ˂ 0.05); and between Ancylostoma duodenale eggs and temperature (P ˂ 0.05). The overall results indicated that the beaches studied are subjected to fecal pollution. This pollution is more accentuated during low tides than during high tides. Depending on tidal movements, swimmers risk exposure to helminth eggs and larvae known to be responsible for gastroenteritis.

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“…Different types of nanomaterials are involved in removal processes, such as graphene oxide, carbon nanotubes, graphene and its derivatives, fullerenes, nanodiamond, quantum dots and nanofibers. 19 The structural properties of nanomaterials are characterized by large surface to volume ratios, a porous-like structure, small size, and a hollow structure. Nanomaterials are especially useful in applications in the food chain, plants, agricultural ecosystems, and when used in efficient technologies and final products.…”

Section: Types Of Carbon-based Nanomaterialsmentioning

confidence: 99%

Recent advances in carbon-based nanomaterials for the treatment of toxic inorganic pollutants in wastewater

et al. 2023

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Occurrence and distribution of microbial pollutants in coastal areas of the Adriatic Sea influenced by river discharge

Cited by 21 publications

References 71 publications

Brucella ceti and Brucella pinnipedialis genome characterization unveils genetic features that highlight their zoonotic potential

Brucella ceti and Brucella pinnipedialis genome characterization unveils genetic features that highlight their zoonotic potential

Influence of tides on the dissemination and related health risks of intestinal helminths along the Kribi beaches (Atlantic Coast, Southern Cameroon)

Recent advances in carbon-based nanomaterials for the treatment of toxic inorganic pollutants in wastewater

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