2024Journal Article ER4 Auteurs : Jairi, Idriss; Ben-Othman, Sarah; Canivet, Ludivine; Zgaya-Biau, Hayfa In: Environmental Technology and Innovation, vol. 36, pp. 103793, 2024, (ACL). @article{jairi:hal-04687711, |
2024Journal Article ER4 Auteurs : Jairi, Idriss; Rekbi, Amelle; Ben-Othman, Sarah; Hammadi, Slim; Canivet, Ludivine; Zgaya-Biau, Hayfa In: Engineering Applications of Artificial Intelligence, vol. 139, pp. 109531, 2024, (ACL). @article{jairi:hal-04763860, |
2024Journal Article ER4 Auteurs : Jairi, Idriss; Ben-Othman, Sarah; Canivet, Ludivine; Zgaya-Biau, Hayfa In: Engineering Applications of Artificial Intelligence, vol. 133, pp. 108096, 2024, (ACL). @article{jairi:hal-04469637, |
2021Journal Article ER4 Auteurs : Rorat, Agnieszka; Lanier, Caroline; Gorge, Hélène; Jaeg, Jean-Philippe; Cuny, Damien; Deram, Annabelle; Canivet, Ludivine Perspectives on particle-related health risk assessment In: Environnement, Risques & Santé, vol. 20, no. 4, pp. 389-394, 2021, (ACL). @article{rorat:hal-03771752, |
2020Journal Article ER4 Auteurs : Canivet, Ludivine; Denayer, Franck-Olivier; Dubot, Pierre; Garcon, Guillaume; Lo-Guidice, Jean-Marc Toxicity of iron nanoparticles towards primary cultures of human bronchial epithelial cells In: Journal of Applied Toxicology, 2020, (ACL). @article{Canivet2020, Air pollution is a public health issue and the toxicity of ambient particulate matter (PM) is well‐recognized. Although it does not mostly contribute to the total mass of PM, increasing evidence indicates that the ultrafine fraction has generally a greater toxicity than the others do. A better knowledge of the underlying mechanisms involved in the pathological disorders related to nanoparticles (NPs) remains essential. Hence, the goal of this study was to determine better whether the exposure to a relatively low dose of well‐characterized iron‐rich NPs (Fe‐NPs) might alter some critical toxicological endpoints in a relevant primary culture model of human bronchial epithelial cells (HBECs). We sought to use Fe‐NPs representative of those frequently found in the industrial smokes of metallurgical industries. After having noticed the effective internalization of Fe‐NPs, oxidative, inflammatory, DNA repair, and apoptotic endpoints were investigated within HBECs, mainly through transcriptional screening. Taken together, these results revealed that, despite it only produced relatively low levels of reactive oxygen species without any significant oxidative damage, low‐dose Fe‐NPs quickly significantly deregulated the transcription of some target genes closely involved in the proinflammatory response. Although this inflammatory process seemed to stay under control over time in case of this acute scenario of exposure, the future study of its evolution after a scenario of repeated exposure could be very interesting to evaluate the toxicity of Fe‐NPs better. |
2020Journal Article ER4 Auteurs : Platel, Ane; Privat, Killian; Talahari, Smail; Delobel, Alexande; Dourdin, Gonzague; Gateau, Eulalie; Simar, Sophie; Saleh, Yara; Sotty, Jules; Antherieu, Sébastien; Canivet, Ludivine; Alleman, Laurent-Y.; Perdrix, Esperanza; Garçon, Guillaume; Denayer, Franck-Olivier; Lo-Guidice, Jean-Marc; Nesslany, Fabrice Study of in vitro and in vivo genotoxic effects of air pollution fine (PM2.5-0.18) and quasi-ultrafine (PM0.18) particles on lung models In: Science of the Total Environment, vol. 711, pp. 134666, 2020, (ACL). @article{Platel2020, Air pollution and particulate matter (PM) are classified as carcinogenic to humans. Pollutants evidence for public health concern include coarse (PM10) and fine (PM2.5) particles. However, ultrafine particles (PM0.1) are assumed to be more toxic than larger particles, but data are still needed to better understand their mechanism of action. In this context, the aim of our work was to investigate the in vitro and in vivo genotoxic potential of fine (PM2.5-018) and quasi ultra-fine (PM0.18) particles from an urban-industrial area (Dunkirk, France) by using comet, micronucleus and/or gene mutation assays. In vitro assessment was performed with 2 lung immortalized cell lines (BEAS-2B and NCI-H292) and primary normal human bronchial epithelial cells (NHBE) grown at the air-liquid interface or in submerged conditions (5 µg PM/cm2). For in vivo assessment, tests were performed after acute (24 h, 100 µg PM/animal), subacute (1 month, 10 µg PM/animal) and subchronic (3 months, 10 µg PM/animal) intranasal exposure of BALB/c mice. In vitro, our results show that PM2.5-018 and PM0.18 induced primary DNA damage but no chromosomal aberrations in immortalized cells. Negative results were noted in primary cells for both endpoints. In vivo assays revealed that PM2.5-018 and PM0.18 induced no significant increases in DNA primary damage, chromosomal aberrations or gene mutations, whatever the duration of exposure. This investigation provides initial answers regarding the in vitro and in vivo genotoxic mode of action of PM2.5-018 and PM0.18 at moderate doses and highlights the need to develop standardized specific methodologies for assessing the genotoxicity of PM. Moreover, other mechanisms possibly implicated in pulmonary carcinogenesis, e.g. epigenetics, should be investigated. |
2020Conference ER4 Auteurs : Rorat, Agnieszka; Lanier, Caroline; Jaeg, Jean-Philippe; Cuny, Damien; Deram, Annabelle; Canivet, Ludivine Between physicochemical characterization of atmospheric particles and their impact on human health - challenges and perspectives (RECORD project) Atmso'Fair (Webinair), 23-24 juin 2020, 2020, (ACTN). @conference{Rorat2020, |
2020Journal Article ER4 Auteurs : Sotty, Jules; Kluza, Jérôme; De-Sousa, Corentin; Antherieu, Sébastien; Alleman, Laurent; Canivet, Ludivine; Perdrix, Esperanza; Loyens, Anne; Marchetti, Philippe; Lo-Guidice, Jean-Marc; Garcon, Guillaume Mitochondrial alterations triggered by repeated exposure to fine (pm2.5-0.18) and quasi-ultrafine (pm0.18) fractions of ambient particulate matter In: Environment International, vol. 142, pp. 105830, 2020, (ACL). @article{Sotty2020, Nowadays ambient particulate matter (PM) levels still regularly exceed the guideline values established by World Health Organization in most urban areas. Numerous experimental studies have already demonstrated the airway toxicity of the fine fraction of PM (FP), mainly triggered by oxidative stress-induced airway inflammation. However, only few studies have actually paid close attention to the ultrafine fraction of PM (UFP), which is likely to be more easily internalized in cells and more biologically reactive. Mitochondria are major endogenous sources of reactive oxygen species (ROS) through oxidative metabolism, and coordinate many critical cellular signaling processes. Mitochondria have been often studied in the context of PM toxicity and generally associated with apoptosis activation. However, little is known about the underlying adaptation mechanisms that could occur following exposure at sub-apoptotic doses of ambient PM. Here, normal human bronchial epithelial BEAS-2B cells were acutely or repeatedly exposed to relatively low doses (5 µg.cm−2) of FP (PM2.5-0.18) or quasi-UFP (Q-UFP; PM0.18) to better access the critical changes in mitochondrial morphology, functions, and dynamics. No significant cytotoxicity nor increase of apoptotic events were reported for any exposure. Mitochondrial membrane potential (ΔΨm) and intracellular ATP content were also not significantly impaired. After cell exposure to sub-apoptotic doses of FP and notably Q-UFP, oxidative phosphorylation was increased as well as mitochondrial mass, resulting in increased production of mitochondrial superoxide anion. Given this oxidative boost, the NRF2-ARE signaling pathway was significantly activated. However, mitochondrial dynamic alterations in favor of accentuated fission process were observed, in particular after Q-UFP vs FP, and repeated vs acute exposure. Taken together, these results supported mitochondrial quality control and metabolism dysfunction as an early lung underlying mechanism of toxicity, thereby leading to accumulation of defective mitochondria and enhanced endogenous ROS generation. Therefore, these features might play a key role in maintaining PM-induced oxidative stress and inflammation within lung cells, which could dramatically contribute to the exacerbation of inflammatory chronic lung diseases. The prospective findings of this work could also offer new insights into the physiopathology of lung toxicity, arguably initiate and/or exacerbate by acutely and rather repeated exposure to ambient FP and mostly Q-UFP |

2024Journal Article In: Environmental Technology and Innovation, vol. 36, pp. 103793, 2024, (ACL). |
2024Journal Article In: Engineering Applications of Artificial Intelligence, vol. 139, pp. 109531, 2024, (ACL). |
2024Journal Article In: Engineering Applications of Artificial Intelligence, vol. 133, pp. 108096, 2024, (ACL). |
2021Journal Article Perspectives on particle-related health risk assessment In: Environnement, Risques & Santé, vol. 20, no. 4, pp. 389-394, 2021, (ACL). |
2020Journal Article Toxicity of iron nanoparticles towards primary cultures of human bronchial epithelial cells In: Journal of Applied Toxicology, 2020, (ACL). |
2020Journal Article Study of in vitro and in vivo genotoxic effects of air pollution fine (PM2.5-0.18) and quasi-ultrafine (PM0.18) particles on lung models In: Science of the Total Environment, vol. 711, pp. 134666, 2020, (ACL). |
2020Conference Between physicochemical characterization of atmospheric particles and their impact on human health - challenges and perspectives (RECORD project) Atmso'Fair (Webinair), 23-24 juin 2020, 2020, (ACTN). |
2020Journal Article Mitochondrial alterations triggered by repeated exposure to fine (pm2.5-0.18) and quasi-ultrafine (pm0.18) fractions of ambient particulate matter In: Environment International, vol. 142, pp. 105830, 2020, (ACL). |