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Article ; Online: How toxic is the COVID-19 drug azithromycin in the presence of Posidonia oceanica? Toxicokinetics and experimental approach of meiobenthic nematodes from a metallically pristine area.

Badraoui, Riadh / Mannai, Ghofrane / Siddiqui, Arif J / Pacioglu, Octavian / Rudayni, Hassan A / Boufahja, Fehmi / Essid, Naceur

Environmental pollution (Barking, Essex : 1987)

2023 Volume 319, Page(s) 121007

Abstract: The current study presents the results of an experiment carried to assess the impact of azithromycin, a COVID-19 drug, probably accumulated in marine sediments for three years, since the start of the pandemic, on benthic marine nematodes. It was explored ...

Abstract	The current study presents the results of an experiment carried to assess the impact of azithromycin, a COVID-19 drug, probably accumulated in marine sediments for three years, since the start of the pandemic, on benthic marine nematodes. It was explored the extent to which a common macrophyte from the Mediterranean Sea influenced the toxic impact of azithromycin on meiobenthic nematodes. Metals are known to influence toxicity of azithromycin. The nematofauna from a metallically pristine site situated in Bizerte bay, Tunisia, was exposed to two concentrations of azithromycin [i.e. 5 and 10 μg l
MeSH term(s)	Animals ; Azithromycin/toxicity ; Toxicokinetics ; COVID-19 ; COVID-19 Drug Treatment ; Nematoda ; Alismatales ; Mediterranean Sea
Chemical Substances	Azithromycin (83905-01-5)
Language	English
Publishing date	2023-01-03
Publishing country	England
Document type	Journal Article
ZDB-ID	280652-6
ISSN	1873-6424 ; 0013-9327 ; 0269-7491
ISSN (online)	1873-6424
ISSN	0013-9327 ; 0269-7491
DOI	10.1016/j.envpol.2023.121007
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Toxicity of synthetic Endocrine Disrupting Compounds on meiofauna: Estradiol benzoate as a case study.

Essid, Naceur / Faiza, Manel / Hedfi, Amor / Almalki, Mohammed / Urkmez, Derya / Boufahja, Fehmi

Environmental pollution (Barking, Essex : 1987)

2021 Volume 286, Page(s) 117300

Abstract: An experimental study was carried out to determine the effects of the enrichment of sediments by endocrine perturbators on free-living nematodes from the Ghar El Melh lagoon, Tunisia. For 30 days, four concentrations of Estradiol Benzoate (hereafter EB) ( ...

Abstract	An experimental study was carried out to determine the effects of the enrichment of sediments by endocrine perturbators on free-living nematodes from the Ghar El Melh lagoon, Tunisia. For 30 days, four concentrations of Estradiol Benzoate (hereafter EB) (0.43, 4.3, 8.6 and 12.9 ng l
MeSH term(s)	Animals ; Estradiol/analogs & derivatives ; Nematoda ; Tunisia
Chemical Substances	estradiol 3-benzoate (1S4CJB5ZGN) ; Estradiol (4TI98Z838E)
Language	English
Publishing date	2021-05-04
Publishing country	England
Document type	Journal Article
ZDB-ID	280652-6
ISSN	1873-6424 ; 0013-9327 ; 0269-7491
ISSN (online)	1873-6424
ISSN	0013-9327 ; 0269-7491
DOI	10.1016/j.envpol.2021.117300
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Article ; Online: How toxic is the COVID-19 drug azithromycin in the presence of Posidonia oceanica? Toxicokinetics and experimental approach of meiobenthic nematodes from a metallically pristine area

Badraoui, Riadh / Mannai, Ghofrane / Siddiqui, Arif J. / Pacioglu, Octavian / Rudayni, Hassan A. / Boufahja, Fehmi / Essid, Naceur

Environmental Pollution. 2023 Feb., v. 319 p.121007-

2023

Abstract	The current study presents the results of an experiment carried to assess the impact of azithromycin, a COVID-19 drug, probably accumulated in marine sediments for three years, since the start of the pandemic, on benthic marine nematodes. It was explored the extent to which a common macrophyte from the Mediterranean Sea influenced the toxic impact of azithromycin on meiobenthic nematodes. Metals are known to influence toxicity of azithromycin. The nematofauna from a metallically pristine site situated in Bizerte bay, Tunisia, was exposed to two concentrations of azithromycin [i.e. 5 and 10 μg l⁻¹]. In addition, two masses of the common macrophyte Posidonia oceanica [10 and 20% Dry Weight (DW)] were considered and associated with azithromycin into four possible combinations. The abundance and the taxonomic diversity of the nematode communities decreased significantly following the exposure to azithromycin, which was confirmed by the toxicokinetic data and behaving as substrate for P-glycoprotein (P-gp). The toxicity of 5 μg l⁻¹ dosage of azithromycin was partially reduced at 10% DW of Posidonia and completely at 20% DW. The results showed that 5 μg l⁻¹ of azithromycin can be reduced by the macrophyte P. oceanica when present in the environment at low masses as 10% DW.
Keywords	COVID-19 infection ; Nematoda ; P-glycoproteins ; Posidonia oceanica ; azithromycin ; macrophytes ; pandemic ; pharmacokinetics ; pollution ; species diversity ; toxicity ; Mediterranean Sea ; Tunisia ; COVID-19 crisis ; Ecotoxicity ; Meiobenthic nematodes ; Toxicokinetics
Language	English
Dates of publication	2023-02
Publishing place	Elsevier Ltd
Document type	Article ; Online
ZDB-ID	280652-6
ISSN	1873-6424 ; 0013-9327 ; 0269-7491
ISSN (online)	1873-6424
ISSN	0013-9327 ; 0269-7491
DOI	10.1016/j.envpol.2023.121007
Database	NAL-Catalogue (AGRICOLA)

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Article: Toxicity of synthetic Endocrine Disrupting Compounds on meiofauna: Estradiol benzoate as a case study

Essid, Naceur / Faiza, Manel / Hedfi, Amor / Almalki, Mohammed / Urkmez, Derya / Boufahja, Fehmi

Environmental pollution. 2021 Oct. 01, v. 286

2021

Abstract	An experimental study was carried out to determine the effects of the enrichment of sediments by endocrine perturbators on free-living nematodes from the Ghar El Melh lagoon, Tunisia. For 30 days, four concentrations of Estradiol Benzoate (hereafter EB) (0.43, 4.3, 8.6 and 12.9 ng l⁻¹). The average nematode abundances showed a significant increase after the introduction of EB in their close environment. In contrast, the taxonomic examination has shown a decrease in species diversity of nematodes. The ordination of treatments according to the nMDS showed a clear structural separation of the enriched replicates with EB from controls based on species lists, in particular for concentrations EB3 and EB4. Indeed, under such conditions, the nematofauna exhibited a more remarkable presence of a new record for Science Theristus n. sp. and a decrease in relative abundances of Paracomesoma dubium. On feeding level, a predominance of non-selective deposit-feeders and a decline in proportions of epistrate feeders and carnivorous omnivores was observed with increasing concentrations of EB. Furthermore, in treated replicates with EB, females discernibly showed an increase compared to controls. Overall, EB affect significantly features of meiobenthic nematodes starting from the concentration of 4.3 ng l⁻¹.
Keywords	Nematoda ; carnivores ; case studies ; estradiol ; fauna ; free-living nematodes ; pollution ; species diversity ; toxicity ; Tunisia
Language	English
Dates of publication	2021-1001
Publishing place	Elsevier Ltd
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	280652-6
ISSN	1873-6424 ; 0013-9327 ; 0269-7491
ISSN (online)	1873-6424
ISSN	0013-9327 ; 0269-7491
DOI	10.1016/j.envpol.2021.117300
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Effectiveness of Shewanella oneidensis bioaugmentation in the bioremediation of phenanthrene-contaminated sediments and possible consortia with omnivore-carnivore meiobenthic nematodes.

Yeferni, Mounir / Ben Saïd, Olfa / Mahmoudi, Ezzeddine / Essid, Naceur / Hedfi, Amor / Almalki, Mohammed / Pacioglu, Octavian / Dervishi, Aida / Boufahja, Fehmi

Environmental pollution (Barking, Essex : 1987)

2021 Volume 292, Issue Pt A, Page(s) 118281

Abstract: This study was conducted to assess the impact and efficiency of the bioaugmentation as a bioremediation technique in annoying effects of a polycyclic aromatic hydrocarbon (phenanthrene) on a community of free-living nematodes from Bizerte bay (Tunisia). ... ...

Abstract	This study was conducted to assess the impact and efficiency of the bioaugmentation as a bioremediation technique in annoying effects of a polycyclic aromatic hydrocarbon (phenanthrene) on a community of free-living nematodes from Bizerte bay (Tunisia). For this purpose, closed microcosms were exposed to three doses of phananthrene (0.1 μg kg
MeSH term(s)	Animals ; Biodegradation, Environmental ; Geologic Sediments ; Nematoda ; Phenanthrenes ; Shewanella
Chemical Substances	Phenanthrenes
Language	English
Publishing date	2021-10-06
Publishing country	England
Document type	Journal Article
ZDB-ID	280652-6
ISSN	1873-6424 ; 0013-9327 ; 0269-7491
ISSN (online)	1873-6424
ISSN	0013-9327 ; 0269-7491
DOI	10.1016/j.envpol.2021.118281
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Article ; Online: Ecotoxic response of nematodes to ivermectin, a potential anti-COVID-19 drug treatment.

Essid, Naceur / Allouche, Mohamed / Lazzem, Mounira / Harrath, Abdel Halim / Mansour, Lamjed / Alwasel, Saleh / Mahmoudi, Ezzeddine / Beyrem, Hamouda / Boufahja, Fehmi

Marine pollution bulletin

2020 Volume 157, Page(s) 111375

Abstract: At the end of March 2020, ivermectin was confirmed as a drug for COVID-19 treatment. A significant amount of ivermectin could deposit into sediments of the semi-closed Mediterranean Sea, where three European COVID-19 epicenters are located: Italy, Spain, ...

Abstract	At the end of March 2020, ivermectin was confirmed as a drug for COVID-19 treatment. A significant amount of ivermectin could deposit into sediments of the semi-closed Mediterranean Sea, where three European COVID-19 epicenters are located: Italy, Spain, and France. Meiobenthic nematodes were exposed to three ivermectin doses (1.8 ng.g
MeSH term(s)	Animals ; Antiviral Agents/toxicity ; Betacoronavirus ; COVID-19 ; Coronavirus Infections/drug therapy ; France ; Humans ; Italy ; Ivermectin/toxicity ; Mediterranean Sea ; Nematoda ; Pandemics ; Pneumonia, Viral ; SARS-CoV-2 ; Spain ; COVID-19 Drug Treatment
Chemical Substances	Antiviral Agents ; Ivermectin (70288-86-7)
Keywords	covid19
Language	English
Publishing date	2020-06-11
Publishing country	England
Document type	Journal Article
ZDB-ID	2001296-2
ISSN	1879-3363 ; 0025-326X
ISSN (online)	1879-3363
ISSN	0025-326X
DOI	10.1016/j.marpolbul.2020.111375
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Effectiveness of Shewanella oneidensis bioaugmentation in the bioremediation of phenanthrene-contaminated sediments and possible consortia with omnivore-carnivore meiobenthic nematodes

Yeferni, Mounir / Ben Saïd, Olfa / Mahmoudi, Ezzeddine / Essid, Naceur / Hedfi, Amor / Almalki, Mohammed / Pacioglu, Octavian / Dervishi, Aida / Boufahja, Fehmi

Environmental pollution. 2022 Jan. 01, v. 292

2022

Abstract	This study was conducted to assess the impact and efficiency of the bioaugmentation as a bioremediation technique in annoying effects of a polycyclic aromatic hydrocarbon (phenanthrene) on a community of free-living nematodes from Bizerte bay (Tunisia). For this purpose, closed microcosms were exposed to three doses of phananthrene (0.1 μg kg⁻¹, 1 μg kg⁻¹ and 10 μg kg⁻¹), in combination or not with a strain of Shewanella oneidensis. After 40 days of the exposure, results were obtained at the numerical, taxonomic and feeding levels. The results of univariate analyses revealed significant decreases in most univariate indices for phenanthrene treated communities compared to controls, with a discernible increase in the proportion of epistrate feeders. After bioaugmentation, similar patterns were observed for univariate and multivariate analyses, with the exception of the highest treatment, which showed no difference from the controls. The results obtained showed that the bioaugmentation with Shewanellea oneidensis was highly effective in reducing the negative impact of the highest dose of phenanthrene (10 μg kg⁻¹ Dry Weight) tested on meiobenthic nematodes. Furthermore, a combination of Shewanellea oneidensis and four omnivore-carnivore nematode taxa could be suggested as an effective method in the bioremediation of phenanthrene-contaminated sediment.
Keywords	Nematoda ; Shewanella oneidensis ; bioaugmentation ; free-living nematodes ; phenanthrenes ; pollution ; sediments ; Tunisia
Language	English
Dates of publication	2022-0101
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	280652-6
ISSN	1873-6424 ; 0013-9327 ; 0269-7491
ISSN (online)	1873-6424
ISSN	0013-9327 ; 0269-7491
DOI	10.1016/j.envpol.2021.118281
Database	NAL-Catalogue (AGRICOLA)

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Article: How effective is wastewater treatment? A case study under the light of taxonomic and feeding features of meiobenthic nematodes

Bejaoui, Wiem / Ali, Manel Ben / Hedfi, Amor / Almalki, Mohammed / Essid, Naceur / Mahmoudi, Ezzeddine / Rizk, Roquia / Pacioglu, Octavian / Urkmez, Derya / Dervishi, Aida / Boufahja, Fehmi

Environmental science and pollution research. 2022 Jan., v. 29, no. 2

2022

Abstract: A microcosm bioassay was designed to assess the efficacy of wastewater treatment methods used in sewage plants. The taxonomic and feeding characteristics of a meiobenthic nematode assemblage from Ghar El Melh lagoon (Tunisia) were used to achieve this ... ...

Abstract	A microcosm bioassay was designed to assess the efficacy of wastewater treatment methods used in sewage plants. The taxonomic and feeding characteristics of a meiobenthic nematode assemblage from Ghar El Melh lagoon (Tunisia) were used to achieve this goal. Nematode assemblages were exposed for 30 days to untreated wastewater (UW) obtained from the sewage treatment plant of Sidi Ahmed (Tunisia) and three mixtures with treated wastewater (TW33 = 33%, TW66 = 66%, and TW100 = 100%). Concerning the nematode abundance, the exposure to either treated wastewater (TW33-100) or untreated wastewater (UW) had no significant effect. In contrast, Shannon-Wiener index and Pielou’s Evenness were clearly reduced by contamination with both types of wastewater, with a more pronounced negative impact prior to treatment in the sewage plant. The multivariate analyzes revealed a change in the taxonomic composition of the nematofauna in response to the contamination by untreated or treated wastewater. The relative abundances of species in wastewater replicates compared to controls reflected this taxonomic restructuring. Finally, Ascolaimus elongatus, Terschellingia communis, and Kraspedonema octogoniata were less represented in all experimentally treated units and could be considered as ‘sensitive taxa to wastewater’. While, Paracomesoma dubium, appears to be a ‘tolerant and/or opportunistic’ species, showing increased relative abundances under all wastewater treatments.
Keywords	Nematoda ; bioassays ; case studies ; pollution ; research ; sewage ; sewage treatment ; taxonomy ; wastewater ; wastewater treatment ; Tunisia
Language	English
Dates of publication	2022-01
Size	p. 2566-2578.
Publishing place	Springer Berlin Heidelberg
Document type	Article
ZDB-ID	1178791-0
ISSN	1614-7499 ; 0944-1344
ISSN (online)	1614-7499
ISSN	0944-1344
DOI	10.1007/s11356-021-15844-9
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Toxicity of a chromium-enriched superfood, Spirulina platensis, assessed by taxonomic and morpho-functional diversity of marine meiofauna.

Essid, Naceur / Gharbi, Rifka / Harrath, Abdel Halim / Mansour, Lamjed / Mahmoudi, Ezzeddine / Beyrem, Hamouda / Ansari, Kapuli Gani Mohamed Thameemul / Boufahja, Fehmi

Environmental pollution (Barking, Essex : 1987)

2020 Volume 262, Page(s) 114350

Abstract: A laboratory bioassay was conducted to investigate the ecotoxicity of a chromium-enriched superfood, Spirulina platensis, on the meiofauna collected from the Ghar El Melh lagoon, Tunisia. After 1 month of exposure, the abundances of meiobenthic taxa and ... ...

Abstract	A laboratory bioassay was conducted to investigate the ecotoxicity of a chromium-enriched superfood, Spirulina platensis, on the meiofauna collected from the Ghar El Melh lagoon, Tunisia. After 1 month of exposure, the abundances of meiobenthic taxa and the taxonomic and morpho-functional diversity of nematodes showed significant differences between the Spirulina and Spirulina + chromium groups. The nematodes were more tolerant of all types of stressors compared to harpacticoids, polychaetes, and oligochaetes, and the lowest taxonomic and morpho-functional diversity of nematodes was observed in the highest sedimentary concentration of S. platensis (50% DW). The mixed treatments may have been richer in micro-habitats and subject to low selective pressure, thereby hosting nematodes with a wide range of adaptations. The responses of the nematode species differed depending on their functional traits. Spirulina enriched with chromium induced two responses for the same feeding group: high toxicity for Daptonema fallax and low toxicity for two Theristus species (T. flevensis and T. modicus). The ecotoxicity of the Spirulina/chromium mixtures were lower than that of Spirulina alone, suggesting mutual neutralization between these two elements. The association between functional traits and taxonomic diversity showed that the effects of the mixtures were not additive and that one of the stressors camouflaged the effect of the other. Our findings should encourage the commercialization of chromium-enriched S. platensis owing to its lower ecotoxicity than Spirulina alone.
MeSH term(s)	Animals ; Chromium ; Ecosystem ; Nematoda ; Spirulina ; Tunisia
Chemical Substances	Chromium (0R0008Q3JB)
Language	English
Publishing date	2020-03-12
Publishing country	England
Document type	Journal Article
ZDB-ID	280652-6
ISSN	1873-6424 ; 0013-9327 ; 0269-7491
ISSN (online)	1873-6424
ISSN	0013-9327 ; 0269-7491
DOI	10.1016/j.envpol.2020.114350
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Article ; Online: Ecotoxic response of nematodes to ivermectin, a potential anti-COVID-19 drug treatment

Essid, Naceur / Allouche, Mohamed / Lazzem, Mounira / Harrath, Abdel Halim / Mansour, Lamjed / Alwasel, Saleh / Mahmoudi, Ezzeddine / Beyrem, Hamouda / Boufahja, Fehmi

Marine Pollution Bulletin

2020 Volume 157, Page(s) 111375

Keywords	Aquatic Science ; Pollution ; Oceanography ; covid19
Language	English
Publisher	Elsevier BV
Publishing country	us
Document type	Article ; Online
ZDB-ID	2001296-2
ISSN	1879-3363 ; 0025-326X
ISSN (online)	1879-3363
ISSN	0025-326X
DOI	10.1016/j.marpolbul.2020.111375
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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