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Kim HR, Lee SY, You GE, Park CW, Kim HO, Chung BY. Exosomes released by environmental pollutant-stimulated Keratinocytes/PBMCs can trigger psoriatic inflammation in recipient cells via the AhR signaling pathway. Front Mol Biosci 2024; 10:1324692. [PMID: 38288335 PMCID: PMC10822922 DOI: 10.3389/fmolb.2023.1324692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 11/29/2023] [Indexed: 01/31/2024] Open
Abstract
Introduction: Exosomes, pivotal in intercellular communication during skin disease pathogenesis, have garnered substantial attention. However, the impact of environmental pollutants, such as benzo[a]pyrene (BaP) and 2, 3, 7, 8-tetrachlorodibenzo-p-dioxin (TCDD), on exosome release amid inflammatory skin diseases remains unexplored. This study addresses this gap by examining the influence of BaP and TCDD on exosome function, specifically focusing on immune-related pathway alterations in normal recipient keratinocytes and peripheral blood mononuclear cells (PBMCs). Methods: HaCaT cells were treated with exosomes from BaP- or TCDD-treated keratinocytes. Proinflammatory cytokines and chemokines, including TNF-α, IL-1β, IL-6, IL-8, CXCL1, and CXCL5, were assessed. The involvement of the p65NF-κB/p38MAPK/ERK signaling pathway in recipient keratinocytes was investigated. Aryl hydrocarbon receptor (AhR) silencing was employed to elucidate its role in mediating the proinflammatory response induced by exosomes from BaP- or TCDD-treated keratinocytes. Results and discussion: Treatment with exosomes from BaP- or TCDD-treated keratinocytes induced a significant increase in proinflammatory cytokines and chemokines in HaCaT cells. The upregulation implicated the p65NF-κB/p38MAPK/ERK signaling pathway. AhR silencing attenuated this response, suggesting a role for AhR in mediating this response. In PBMCs from healthy controls, exosomes from BaP-stimulated PBMCs of psoriatic patients led to increased expression of proinflammatory cytokines and modulation of Th1/Th17 cell distribution via AhR activation. These findings unveil a novel dimension in the interplay between environmental xenobiotic agents (BaP and TCDD) and exosomal functions. The study establishes their influence on psoriatic inflammatory responses, shedding light on the underlying mechanisms mediated through the AhR signaling pathway in recipient keratinocytes and PBMCs.
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Affiliation(s)
- Hye Ran Kim
- Department of Dermatology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Republic of Korea
| | - So Yeon Lee
- Department of Dermatology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Ga Eun You
- Research and Development Institute, Biosolution, Seoul, Republic of Korea
| | - Chun Wook Park
- Department of Dermatology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Hye One Kim
- Department of Dermatology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Bo Young Chung
- Department of Dermatology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Republic of Korea
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Godéré M, Marchand P, Vénisseau A, Guiffard I, Leblanc JC, Le Bizec B, Dervilly G. Health risk assessment to polychlorinated naphthalenes dioxin-like compounds in French sea food consumers. CHEMOSPHERE 2022; 308:136563. [PMID: 36167201 DOI: 10.1016/j.chemosphere.2022.136563] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 09/15/2022] [Accepted: 09/18/2022] [Indexed: 06/16/2023]
Abstract
There has been a recent revival of interest in some historical contaminants such as polychlorinated naphthalenes (PCNs). However, occurrence data are still lacking in some countries although industrial production of PCNs has been reported. This observation led to the first ever assessment of their presence in fish and seafood products in France in the present work. Their analysis was integrated in an already validated method applied for polychlorinated dibenzodioxins/furans (PCDD/Fs) and polychlorinated biphenyls (PCBs), based on the structural similarity existing between these POPs. Performances of the method (LODs in the range 0.10-0.28 pg g-1 wet weight (ww), LOQs in the range 0.33-0.93 pg g-1 ww), enabled monitoring 69 di-to octachlorinated congeners in a large representative set of fish and seafood samples collected in 2005 in four coastal areas of the French mainland (n > 30). Their systematic presence was demonstrated in all the investigated seafood products, with levels (ΣPCNs in the range 2-440 pg g-1 wet weight) close to those already reported in other European fish and seafood sampled at a similar period. In addition, the robust measurement of almost all possible PCNs (69/75) allowed a fine interpretation of the observed profiles, highlighting in particular the specificities between species and fishing areas. Compared to the PCDD/Fs, PCBs, and polybrominated diphenylethers levels also measured for this set of samples, PCNs were observed as minor contributors to total concentrations (0.05-3.2%). The specific PCN related dietary dioxin-like exposure could be evaluated at 0.028-0.051 pg of toxic equivalent (TEQ) per kg of body weight per week for an adult, based on fish and seafood consumption only. Overall, this study provides the first baseline data on the occurrence of a large number of PCNs in France, which will allow future evaluation of temporal trends and associated risks.
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Affiliation(s)
| | | | | | | | - Jean-Charles Leblanc
- ANSES, Laboratory for Food Safety, University of Paris-Est, 94700, Maisons-Alfort, France
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Simonnet-Laprade C, Bayen S, McGoldrick D, McDaniel T, Hutinet S, Marchand P, Vénisseau A, Cariou R, Le Bizec B, Dervilly G. Evidence of complementarity between targeted and non-targeted analysis based on liquid and gas-phase chromatography coupled to mass spectrometry for screening halogenated persistent organic pollutants in environmental matrices. CHEMOSPHERE 2022; 293:133615. [PMID: 35038446 DOI: 10.1016/j.chemosphere.2022.133615] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 01/10/2022] [Accepted: 01/11/2022] [Indexed: 05/12/2023]
Abstract
This study explored the complementarity between targeted (TS) and non-targeted screening (NTS) based on liquid and gas-phase chromatography coupled to (high-resolution) mass spectrometry (LC-/GC-(HR)MS) for the comprehensive characterization of organohalogen fingerprints within a set of Lake Ontario lake trout samples. The concentrations of 86 legacy, emerging and novel halogenated compounds (HCs), were determined through 4 TS approaches involving no less than 6 hyphenated systems. In parallel, an innovative NTS strategy, involving both LC and GC-Q-Orbitrap, was implemented to specifically highlight halogenated signals. Non-targeted HRMS data were processed under the HaloSeeker software based on Cl and Br isotopic ratio and mass defect to extend the screening to unsuspected and unknown HCs. A total of 195 halogenated mass spectral features were characterized in the Lake Ontario lake trout, including well known HCs (PCBs, PBDEs, PBBs, DDT and their degradation products), emerging HCs (novel brominated flame retardants, short-, medium- and long-chain chlorinated paraffins) or suggested molecular formula (mainly polychlorinated ones). Among the 122 HCs highlighted by TS, only 21 were identified by NTS. These results fueled a discussion on the potential and limitations of both approaches, and the current position of NTS within environmental and health monitoring programs.
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Affiliation(s)
| | - S Bayen
- Department of Food Science and Agricultural Chemistry, McGill University, 21111 Lakeshore Road, Ste-Anne-de-Bellevue, QC, H9X 3V9, Canada
| | - D McGoldrick
- Water Science and Technology Directorate, Environment and Climate Change Canada, Burlington, Ontario, Canada
| | - T McDaniel
- Water Science and Technology Directorate, Environment and Climate Change Canada, Burlington, Ontario, Canada
| | - S Hutinet
- Oniris, INRAE, LABERCA, 44307, Nantes, France
| | - P Marchand
- Oniris, INRAE, LABERCA, 44307, Nantes, France
| | - A Vénisseau
- Oniris, INRAE, LABERCA, 44307, Nantes, France
| | - R Cariou
- Oniris, INRAE, LABERCA, 44307, Nantes, France
| | - B Le Bizec
- Oniris, INRAE, LABERCA, 44307, Nantes, France
| | - G Dervilly
- Oniris, INRAE, LABERCA, 44307, Nantes, France.
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Detection of Persistent Organic Pollutants in Omental Adipose Tissue from Patients with Diffuse-Gastric Cancer: A Pilot Study. Cancers (Basel) 2021; 13:cancers13194874. [PMID: 34638358 PMCID: PMC8508119 DOI: 10.3390/cancers13194874] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/21/2021] [Accepted: 09/26/2021] [Indexed: 12/02/2022] Open
Abstract
Simple Summary This pilot study reported the observation that great omentum could be analyzed to detect persistent organic pollutants (POPs). Diffuse gastric cancer is an increasing disease that could be associated with pollutants’ exposition. Here, we report a specific POP profile regarding a patient not affected by cancer, nor by diffuse gastric cancer or other abdominal cancers. The widespread presence of a substantial list of POPs (PCDDs/Fs, PCBs, and brominated flame retardants) was found in the omentum from patients with diffuse gastric cancer with minor presence of some organochlorine pesticides. Abstract The greater omentum represents a specific adipose tissue resected with gastric surgery for cancer. Diffuse gastric adenocarcinoma (diffuse-GC) is of major relevance among gastric cancers due to its unknown origin, aggressiveness, and metastasis in the peritoneal cavity. We postulated that persistent organic pollutants (POPs) could be detected in the greater omentum. Great omentum from patients with (i) diffuse-GC, or (ii) with other peritoneal metastatic cancer, and (iii) control group without cancer disease were analyzed for the distribution of a large panel of 96 POPs. POPs include polychlorinated dioxins/furans (PCDD/Fs), polychlorobiphenyls (PCBs), polybrominated diphenyl ethers (PBDE), polybrominated biphenyls (PBB), hexabromocyclododecanes, organochlorine pesticides, and polycyclic aromatic hydrocarbons (PAHs). The widespread presence of a substantial list of POPs (PCDDs/Fs, PCBs, and brominated flame retardants) was found in the omentum from patients with aggressive diffuse-GC, with minor presence of some organochlorine pesticides and PAHs at the low analyzed levels. Some chemicals appeared in larger concentrations in diffuse-GC or other cancer groups, including some PCDDs, PCB105, 123, 138, PBDE209, and PBB153. Overall, the present pilot study provides novel information regarding POPs levels in the omental fat, which is an understudied fat depot in terms of POPs load, and diffuse-GC association.
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Rapamycin Alleviates 2,3,7,8-Tetrachlorodibenzo-p-dioxin-Induced Aggravated Dermatitis in Mice with Imiquimod-Induced Psoriasis-Like Dermatitis by Inducing Autophagy. Int J Mol Sci 2021; 22:ijms22083968. [PMID: 33921372 PMCID: PMC8069848 DOI: 10.3390/ijms22083968] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 04/05/2021] [Accepted: 04/09/2021] [Indexed: 12/22/2022] Open
Abstract
Recently, the mTOR signaling has emerged as an important player in the pathogenesis of psoriasis. We previously found that 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD)-induced psoriatic skin inflammation was related to the inhibition of autophagy in keratinocytes. However, the effects and detailed molecular mechanisms of the mTOR inhibitor rapamycin and TCDD on psoriasis in vivo remain to be elucidated. In this study, we aimed to evaluate the effects of rapamycin and TCDD on skin lesions in imiquimod (IMQ)-induced psoriasis using a mouse model. TCDD aggravated skin inflammation in an IMQ-induced psoriatic mouse model. Furthermore, TCDD increased the expression of aryl hydrocarbon receptor (AHR), CYP1A1, proinflammatory cytokines, oxidative stress markers (NADPH oxidase (Nox) 2, Nox4), and phosphorylated P65NF-ĸB, whereas the expression of autophagy-related factors and the antioxidant marker nuclear factor-erythroid 2-related factor 2 (NRF2) decreased. Rapamycin reduced the aggravated skin inflammation induced by TCDD and restored TCDD-induced autophagy suppression and the increase of AHR expression, oxidative stress, and inflammatory response in the skin lesions of a psoriatic mouse model. In conclusion, we demonstrated that rapamycin alleviates TCDD-induced aggravated dermatitis in mice with imiquimod-induced psoriasis-like dermatitis through AHR and autophagy modulation.
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Guo W, Archer J, Moore M, Shojaee S, Zou W, Ge W, Benjamin L, Adeuya A, Fairchild R, Hong H. Software-Assisted Pattern Recognition of Persistent Organic Pollutants in Contaminated Human and Animal Food. Molecules 2021; 26:molecules26030685. [PMID: 33525602 PMCID: PMC7865765 DOI: 10.3390/molecules26030685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 01/14/2021] [Accepted: 01/16/2021] [Indexed: 11/28/2022] Open
Abstract
Persistent Organic Pollutants (POPs) are a serious food safety concern due to their persistence and toxic effects. To promote food safety and protect human health, it is important to understand the sources of POPs and how to minimize human exposure to these contaminants. The POPs Program within the U.S. Food and Drug Administration (FDA), manually evaluates congener patterns of POPs-contaminated samples and sometimes compares the finding to other previously analyzed samples with similar patterns. This manual comparison is time consuming and solely depends on human expertise. To improve the efficiency of this evaluation, we developed software to assist in identifying potential sources of POPs contamination by detecting similarities between the congener patterns of a contaminated sample and potential environmental source samples. Similarity scores were computed and used to rank potential source samples. The software has been tested on a diverse set of incurred samples by comparing results from the software with those from human experts. We demonstrated that the software provides results consistent with human expert observation. This software also provided the advantage of reliably evaluating an increased sample lot which increased overall efficiency.
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Affiliation(s)
- Wenjing Guo
- National Center for Toxicological Research, U.S. Food & Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, USA; (W.G.); (W.Z.); (W.G.)
| | - Jeffrey Archer
- Office of Regulatory Affairs, Office of Regulatory Science, Arkansas Laboratory, U.S. Food & Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, USA; (J.A.); (M.M.); (S.S.); (R.F.)
| | - Morgan Moore
- Office of Regulatory Affairs, Office of Regulatory Science, Arkansas Laboratory, U.S. Food & Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, USA; (J.A.); (M.M.); (S.S.); (R.F.)
| | - Sina Shojaee
- Office of Regulatory Affairs, Office of Regulatory Science, Arkansas Laboratory, U.S. Food & Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, USA; (J.A.); (M.M.); (S.S.); (R.F.)
| | - Wen Zou
- National Center for Toxicological Research, U.S. Food & Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, USA; (W.G.); (W.Z.); (W.G.)
| | - Weigong Ge
- National Center for Toxicological Research, U.S. Food & Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, USA; (W.G.); (W.Z.); (W.G.)
| | - Linda Benjamin
- Center for Veterinary Medicine, U.S. Food & Drug Administration, 7500 Standish Place, Rockville, MD 20855, USA;
| | - Anthony Adeuya
- Center for Food Safety and Applied Nutrition, U.S. Food & Drug Administration, 5001 Campus Dr, College Park, MD 20740, USA;
| | - Russell Fairchild
- Office of Regulatory Affairs, Office of Regulatory Science, Arkansas Laboratory, U.S. Food & Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, USA; (J.A.); (M.M.); (S.S.); (R.F.)
| | - Huixiao Hong
- National Center for Toxicological Research, U.S. Food & Drug Administration, 3900 NCTR Road, Jefferson, AR 72079, USA; (W.G.); (W.Z.); (W.G.)
- Correspondence: ; Tel.: +1-(870)-543-7296
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7
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Hulin M, Sirot V, Vasseur P, Mahe A, Leblanc JC, Jean J, Marchand P, Venisseau A, Le Bizec B, Rivière G. Health risk assessment to dioxins, furans and PCBs in young children: The first French evaluation. Food Chem Toxicol 2020; 139:111292. [DOI: 10.1016/j.fct.2020.111292] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 03/16/2020] [Accepted: 03/17/2020] [Indexed: 01/19/2023]
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Rey-Cadilhac L, Cariou R, Ferlay A, Jondreville C, Delavaud C, Faulconnier Y, Alcouffe S, Faure P, Marchand P, Le Bizec B, Jurjanz S, Lerch S. Undernutrition combined with dietary mineral oil hastens depuration of stored dioxin and polychlorinated biphenyls in ewes. 1. Kinetics in blood, adipose tissue and faeces. PLoS One 2020; 15:e0230629. [PMID: 32231376 PMCID: PMC7108735 DOI: 10.1371/journal.pone.0230629] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 03/04/2020] [Indexed: 11/29/2022] Open
Abstract
Food safety crises involving persistent organic pollutants [POPs, e.g. dioxins, polychlorinated biphenyls (PCBs), organochlorine pesticides] lead to systematic slaughter of livestock to prevent their entry into the food chain. Therefore, there is a need to develop strategies to depurate livestock moderately contaminated with POPs in order to reduce such economic and social damages. This study aimed to test a POPs depuration strategy based on undernutrition (37% of energy requirements) combined with mineral oil (10% in total dry matter intake) in nine non-lactating ewes contaminated with 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and PCBs 126 and 153. In order to better understand the underlying mechanisms of the depuration process, POPs kinetics and body lipids dynamics were followed concomitantly over 57-day of depuration in POPs storage (adipose tissue, AT), central distribution (blood) and excretion (faeces) compartments. Faecal POPs concentrations in underfed and mineral oil supplemented ewes increased by 2.0 to 2.6-fold, but not proportionally to lipids concentration which increased by 6-fold, compared to the control ewes. Nonetheless, after 57 days of depuration in undernutrition and mineral oil supplementation, AT POPs concentrations were 1.5 to 1.6-fold higher while serum concentrations remained unchanged compared to the control ewes. This was concomitant with a decrease by 2.7-fold of the AT estimated lipids weight along the depuration period. This reduction of the volume of the storage compartment combined with the increase of POPs faecal excretion in underfed and mineral oil supplemented ewes led to a reduction by 1.5-fold of the PCB 126 AT burden, while no changes were observed for TCDD and PCB 153 burdens (vs. no change for PCB 126 and increases for TCDD and PCB 153 AT burdens in control ewes). The original approach of this study combining the fine description at once of POPs kinetic and of body lipids dynamic improved our understanding of POPs fate in the ruminant.
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Affiliation(s)
- Lucille Rey-Cadilhac
- UR AFPA, Université de Lorraine, INRAE, Nancy, France
- UMR Herbivores, Université Clermont Auvergne, INRAE, VetAgro Sup, Saint-Genès-Champanelle, France
| | | | - Anne Ferlay
- UMR Herbivores, Université Clermont Auvergne, INRAE, VetAgro Sup, Saint-Genès-Champanelle, France
| | | | - Carole Delavaud
- UMR Herbivores, Université Clermont Auvergne, INRAE, VetAgro Sup, Saint-Genès-Champanelle, France
| | - Yannick Faulconnier
- UMR Herbivores, Université Clermont Auvergne, INRAE, VetAgro Sup, Saint-Genès-Champanelle, France
| | | | - Pascal Faure
- UE Herbipôle, INRAE, Saint-Genès-Champanelle, France
| | | | | | | | - Sylvain Lerch
- UR AFPA, Université de Lorraine, INRAE, Nancy, France
- Ruminant Research Unit, Agroscope, Posieux, Switzerland
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Lerch S, Rey-Cadilhac L, Cariou R, Faulconnier Y, Jondreville C, Roux D, Dervilly-Pinel G, Le Bizec B, Jurjanz S, Ferlay A. Undernutrition combined with dietary mineral oil hastens depuration of stored dioxin and polychlorinated biphenyls in ewes. 2. Tissue distribution, mass balance and body burden. PLoS One 2020; 15:e0230628. [PMID: 32231383 PMCID: PMC7108722 DOI: 10.1371/journal.pone.0230628] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 03/04/2020] [Indexed: 11/19/2022] Open
Abstract
Food safety crises involving persistent organic pollutants (POPs) lead to systematic slaughter of livestock to prevent contaminants from entering the food chain. Therefore, there is a need to develop strategies to depurate livestock moderately contaminated with POPs to reduce economic and social damage. This study aimed to test undernutrition (37% of energy requirements) combined with mineral oil (10% in total dry matter intake) in nine non-lactating ewes contaminated with 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and polychlorinated biphenyls (PCBs) 126 and 153 as a strategy to enhance the depuration of POPs through faecal excretion. To better understand the underlying mechanisms of the depuration process, lipophilic POPs and lipid fluxes were co-monitored in various body and excretion compartments. Body compartments (adipose tissues, muscle, liver and blood) and the total empty body were analyzed for lipids and POPs concentrations and burdens at slaughter, as well as excretion compartments (faeces and wool) collected during the depuration period. Decreases in empty body total and lipid weights were 6-fold higher in underfed and supplemented ewes compared to control ewes. In addition, over the depuration period undernutrition and supplementation treatment increased faecal TCDD, PCBs 126 and 153 excretions by 1.4- to 2.1-fold but tended to decrease wool PCB 153 excretion by 1.4-fold. This induced 2- to 3-fold higher decreases in the empty body POPs burdens for underfed and supplemented ewes. Nonetheless, when expressed relative to the calculated initial empty body burdens, burdens at slaughter decreased only slightly from 97%, 103% and 98% for control ewes to 92%, 97% and 94% for underfed and supplemented ones, for TCDD, PCBs 126 and 153, respectively. Fine descriptions at once of POPs kinetic (companion paper 1) and mass balance (companion paper 2), and of body lipid dynamics were very useful in improving our understanding of the fate of POPs in the ruminants.
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Affiliation(s)
- Sylvain Lerch
- UR AFPA, Université de Lorraine, INRAE, Nancy, France
- Ruminant Research Unit, Agroscope, Posieux, Switzerland
| | - Lucille Rey-Cadilhac
- UR AFPA, Université de Lorraine, INRAE, Nancy, France
- UMR Herbivores, Université Clermont Auvergne, INRAE, VetAgro Sup, Saint-Genès-Champanelle, France
| | | | - Yannick Faulconnier
- UMR Herbivores, Université Clermont Auvergne, INRAE, VetAgro Sup, Saint-Genès-Champanelle, France
| | | | - Denis Roux
- UE Herbipôle, INRAE, Saint-Genès-Champanelle, France
| | | | | | | | - Anne Ferlay
- UMR Herbivores, Université Clermont Auvergne, INRAE, VetAgro Sup, Saint-Genès-Champanelle, France
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Vaccher V, Ingenbleek L, Adegboye A, Hossou SE, Koné AZ, Oyedele AD, Kisito CSKJ, Dembélé YK, Hu R, Adbel Malak I, Cariou R, Vénisseau A, Veyrand B, Marchand P, Eyangoh S, Verger P, Dervilly-Pinel G, Leblanc JC, Le Bizec B. Levels of persistent organic pollutants (POPs) in foods from the first regional Sub-Saharan Africa Total Diet Study. ENVIRONMENT INTERNATIONAL 2020; 135:105413. [PMID: 31881431 DOI: 10.1016/j.envint.2019.105413] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 11/20/2019] [Accepted: 12/10/2019] [Indexed: 05/22/2023]
Abstract
For the first time, a multi-centre Total Diet Study was carried out in Benin, Cameroon, Mali and Nigeria. We collected and prepared as consumed 528 typical fatty foods from those areas and pooled these subsamples into 44 composites samples. These core foods were tested for a wide spectrum of POPs, including polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), polychlorinated biphenyls (PCBs), brominated flame-retardants (BFRs), organochlorine compounds (OCs), perfluoro alkyl substances (PFAS) and chlorinated flame retardants (CFRs). The POPs contamination levels were similar or lower than those reported in total diet studies previously conducted worldwide. In most cases, core foods belonging to fish food group presented higher POPs concentrations than the other food groups. Interestingly, we observed a difference in both contamination profile and concentration for smoked fish compared to non-smoked fish. Such finding suggests that the smoking process itself might account for a large proportion of the contamination. Further investigation would require the assessment of combustion materials used to smoke fish as a potential vehicle, which may contribute to the dietary exposure of the studied populations to POPs.
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Affiliation(s)
| | - Luc Ingenbleek
- LABERCA, Oniris, INRA, F-44307 Nantes, France; Centre Pasteur du Cameroun (CPC), Yaoundé BP1274, Cameroon
| | - Abimobola Adegboye
- National Agency for Food and Drug Administration and Control (NAFDAC), Abuja 900288, Nigeria.
| | | | - Abdoulaye Zié Koné
- Agence Nationale de la Sécurité Sanitaire des Aliments (ANSSA), Bamako BP 2362, Mali
| | - Awoyinka Dada Oyedele
- National Agency for Food and Drug Administration and Control (NAFDAC), Abuja 900288, Nigeria.
| | - Chabi Sika K J Kisito
- Laboratoire Central de Sécurité Sanitaire des Aliments (LCSSA), Cotonou BP 6874, Benin
| | | | - Reinwei Hu
- Inovalys, Official Laboratory of Analysis, Le Mans, France.
| | | | | | | | | | | | - Sara Eyangoh
- Centre Pasteur du Cameroun (CPC), Yaoundé BP1274, Cameroon.
| | | | | | - Jean-Charles Leblanc
- Food and Agriculture Organization of the United Nations (FAO), 00153 Rome, Italy.
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Koual M, Cano-Sancho G, Bats AS, Tomkiewicz C, Kaddouch-Amar Y, Douay-Hauser N, Ngo C, Bonsang H, Deloménie M, Lecuru F, Le Bizec B, Marchand P, Botton J, Barouki R, Antignac JP, Coumoul X. Associations between persistent organic pollutants and risk of breast cancer metastasis. ENVIRONMENT INTERNATIONAL 2019; 132:105028. [PMID: 31382183 DOI: 10.1016/j.envint.2019.105028] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Revised: 07/15/2019] [Accepted: 07/15/2019] [Indexed: 05/11/2023]
Abstract
BACKGROUND Breast cancer (BC) is a major public health concern with over 2 million new cases diagnosed and over 600,000 deaths in 2018 in women worldwide. When distant metastases are present at diagnosis, the 5-year survival rate is only 26%. Recent studies have suggested that persistent organic pollutants (POPs) that accumulate in adipose tissue (AT) can influence tumor phenotype and stimulate cellular processes important for metastasis such as invasion. We, therefore, tested the hypothesis that POP exposure is associated with BC metastasis. METHODS We conducted an exploratory case-control study in which the concentrations of 49 POPs were measured in both AT and serum samples from BC patients, with or without lymph node metastasis, who underwent partial or total mastectomies, lymph node biopsies and sampling of the adipocytic tumor microenvironment. Adjusted, unconditional logistic models were used to study the associations between the POP concentrations and the risk of metastasis and other hallmarks of cancer aggressiveness. RESULTS 2.3.7.8-TCDD concentrations in AT are positively associated with the risk of metastasis in 43 patients who have BMIs equal or higher than 25 kg/m2 (odds ratio: 4.48 (1.32-20.71)). Furthermore, the concentrations of 2.3.7.8-TCDD and two coplanar PCBs (77&169) in AT also were positively associated with the risk of lymph node metastasis and the tumor size. CONCLUSION Our study suggests that 2.3.7.8-TCDD and some PCBs contribute to the development of tumor metastasis and other hallmarks of cancer aggressiveness. While these results should be considered with caution, this is the first study to identify such potential risk factors. Larger longitudinal studies are necessary to confirm our results. Clinical Trial Protocol Record: 2013-A00663-42.
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Affiliation(s)
- Meriem Koual
- INSERM UMR-S 1124, 45 rue des Saints-Pères, 75006 Paris, France; Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges-Pompidou, Service de Chirurgie Cancérologique Gynécologique et du Sein, Paris, France; Université de Paris, 45 rue des Saints-Pères, 75006 Paris, France
| | | | - Anne-Sophie Bats
- INSERM UMR-S 1124, 45 rue des Saints-Pères, 75006 Paris, France; Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges-Pompidou, Service de Chirurgie Cancérologique Gynécologique et du Sein, Paris, France; Université de Paris, 45 rue des Saints-Pères, 75006 Paris, France
| | - Céline Tomkiewicz
- INSERM UMR-S 1124, 45 rue des Saints-Pères, 75006 Paris, France; Université de Paris, 45 rue des Saints-Pères, 75006 Paris, France
| | - Yael Kaddouch-Amar
- INSERM UMR-S 1124, 45 rue des Saints-Pères, 75006 Paris, France; Université de Paris, 45 rue des Saints-Pères, 75006 Paris, France
| | - Nathalie Douay-Hauser
- INSERM UMR-S 1124, 45 rue des Saints-Pères, 75006 Paris, France; Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges-Pompidou, Service de Chirurgie Cancérologique Gynécologique et du Sein, Paris, France; Université de Paris, 45 rue des Saints-Pères, 75006 Paris, France
| | - Charlotte Ngo
- Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges-Pompidou, Service de Chirurgie Cancérologique Gynécologique et du Sein, Paris, France; Université de Paris, 45 rue des Saints-Pères, 75006 Paris, France
| | - Hélène Bonsang
- Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges-Pompidou, Service de Chirurgie Cancérologique Gynécologique et du Sein, Paris, France; Université de Paris, 45 rue des Saints-Pères, 75006 Paris, France
| | - Myriam Deloménie
- Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges-Pompidou, Service de Chirurgie Cancérologique Gynécologique et du Sein, Paris, France; Université de Paris, 45 rue des Saints-Pères, 75006 Paris, France
| | - Fabrice Lecuru
- INSERM UMR-S 1124, 45 rue des Saints-Pères, 75006 Paris, France; Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges-Pompidou, Service de Chirurgie Cancérologique Gynécologique et du Sein, Paris, France; Université de Paris, 45 rue des Saints-Pères, 75006 Paris, France
| | - Bruno Le Bizec
- LABERCA, Oniris, INRA, Université Bretagne-Loire, 44307 Nantes, France
| | - Philippe Marchand
- LABERCA, Oniris, INRA, Université Bretagne-Loire, 44307 Nantes, France
| | - Jeremie Botton
- Faculty of Pharmacy, Univ. Paris-Sud, Université Paris-Saclay, F-92296 Châtenay-Malabry, France
| | - Robert Barouki
- INSERM UMR-S 1124, 45 rue des Saints-Pères, 75006 Paris, France; Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges-Pompidou, Service de Chirurgie Cancérologique Gynécologique et du Sein, Paris, France; Université de Paris, 45 rue des Saints-Pères, 75006 Paris, France
| | | | - Xavier Coumoul
- INSERM UMR-S 1124, 45 rue des Saints-Pères, 75006 Paris, France; Université de Paris, 45 rue des Saints-Pères, 75006 Paris, France.
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Cano-Sancho G, Labrune L, Ploteau S, Marchand P, Le Bizec B, Antignac JP. The challenging use and interpretation of circulating biomarkers of exposure to persistent organic pollutants in environmental health: Comparison of lipid adjustment approaches in a case study related to endometriosis. CHEMOSPHERE 2018; 200:388-396. [PMID: 29499519 DOI: 10.1016/j.chemosphere.2018.02.120] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 02/16/2018] [Accepted: 02/19/2018] [Indexed: 05/09/2023]
Abstract
The gold-standard matrix for measuring the internal levels of persistent organic pollutants (POPs) is the adipose tissue, however in epidemiological studies the use of serum is preferred due to the low cost and higher accessibility. The interpretation of serum biomarkers is tightly related to the understanding of the underlying causal structure relating the POPs, serum lipids and the disease. Considering the extended benefits of using serum biomarkers we aimed to further examine if through statistical modelling we would be able to improve the use and interpretation of serum biomarkers in the study of endometriosis. Hence, we have conducted a systematic comparison of statistical approaches commonly used to lipid-adjust the circulating biomarkers of POPs based on existing methods, using data from a pilot case-control study focused on severe deep infiltrating endometriosis. The odds ratios (ORs) obtained from unconditional regression for those models with serum biomarkers were further compared to those obtained from adipose tissue. The results of this exploratory study did not support the use of blood biomarkers as proxy estimates of POPs in adipose tissue to implement in risk models for endometriosis with the available statistical approaches to correct for lipids. The current statistical approaches commonly used to lipid-adjust circulating POPs, do not fully represent the underlying biological complexity between POPs, lipids and disease (especially those directly or indirectly affecting or affected by lipid metabolism). Hence, further investigations are warranted to improve the use and interpretation of blood biomarkers under complex scenarios of lipid dynamics.
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Affiliation(s)
- German Cano-Sancho
- LABERCA, Oniris, INRA, Université Bretagne-Loire, 44307, Nantes, France.
| | - Léa Labrune
- LABERCA, Oniris, INRA, Université Bretagne-Loire, 44307, Nantes, France
| | - Stéphane Ploteau
- LABERCA, Oniris, INRA, Université Bretagne-Loire, 44307, Nantes, France; Service de Gynécologie-Obstétrique, CIC FEA, Hôpital Mère Enfant, CHU Hôtel Dieu, Nantes, France
| | - Philippe Marchand
- LABERCA, Oniris, INRA, Université Bretagne-Loire, 44307, Nantes, France
| | - Bruno Le Bizec
- LABERCA, Oniris, INRA, Université Bretagne-Loire, 44307, Nantes, France
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Ploteau S, Cano-Sancho G, Volteau C, Legrand A, Vénisseau A, Vacher V, Marchand P, Le Bizec B, Antignac JP. Associations between internal exposure levels of persistent organic pollutants in adipose tissue and deep infiltrating endometriosis with or without concurrent ovarian endometrioma. ENVIRONMENT INTERNATIONAL 2017; 108:195-203. [PMID: 28869876 DOI: 10.1016/j.envint.2017.08.019] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 08/29/2017] [Accepted: 08/29/2017] [Indexed: 05/26/2023]
Abstract
Endometriosis is a gynaecological disease characterized by the presence of ectopic endometrial tissue. Histologically, it appears as different sub-types, being peritoneal endometriosis, ovarian endometrioma (OvE) and deep infiltrating endometriosis (DIE), which are of major relevance due to their varying clinical presentations. A number of persistent organic pollutants (POPs) have been associated with the onset of endometriosis, yet the overall set of existing studies remains fairly divergent. In this preliminary case-control study we aimed to assess the potential associations between the internal exposure to POPs and the presence of DIE with or without concurrent OvE. Adipose tissue and serum samples were collected from surgically confirmed cases (n=55) and controls (n=44) enrolled during 2013 and 2015 in Pays de la Loire, France. Targeted pollutants (76 historical or more emerging POPs including dioxins, polychlorobiphenyls (PCB), polybrominated diphenyl ethers (PBDEs), polybrominated biphenyls (PBBs), hexabromocyclododecanes (HBCDs) and organochlorine pesticides (OCPs) were quantified by chromatography coupled to mass spectrometry. Odds ratios (ORs) and 95% confidence intervals (CI) were estimated from unconditional logistic regression adjusted for known confounding variables. The results showed significant associations between DIE and adipose tissue levels of 1.2.3.7.8 - PeCDD, OCDF, PCB 105, 114, 118 and 123, PBDE 183, PBB 153, and several OCPs including trans‑nonachlor, cis‑heptachlor epoxide, dieldrin, β-hexachlorocyclohexane and hexachlorobenzene. The largest associations were observed for OCDF followed by cis‑heptachlor epoxide, exhibiting adjusted ORs (95% CI) of 5.42 (2.73-12.85) and 5.36 (2.44-14.84) per 1-SD increase, respectively. The stratified analysis comparing both disease sub-types suggested that adipose tissue exposure markers may be more associated with DIE concurrent with OvE, however these results need to be confirmed in a larger population.
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Affiliation(s)
- Stéphane Ploteau
- LUNAM Université, Oniris, UMR 1329 Laboratoire d'Etude des Résidus et Contaminants dans les Aliments (LABERCA), Nantes, France; Service de gynécologie-obstétrique, CIC FEA, Hôpital Mère Enfant, CHU Hôtel Dieu, Nantes, France
| | - German Cano-Sancho
- LUNAM Université, Oniris, UMR 1329 Laboratoire d'Etude des Résidus et Contaminants dans les Aliments (LABERCA), Nantes, France; INRA Centre Angers-Nantes, Nantes F-44307, France.
| | | | - Arnaud Legrand
- Service de gynécologie-obstétrique, CIC FEA, Hôpital Mère Enfant, CHU Hôtel Dieu, Nantes, France
| | - Anaïs Vénisseau
- LUNAM Université, Oniris, UMR 1329 Laboratoire d'Etude des Résidus et Contaminants dans les Aliments (LABERCA), Nantes, France
| | - Vincent Vacher
- LUNAM Université, Oniris, UMR 1329 Laboratoire d'Etude des Résidus et Contaminants dans les Aliments (LABERCA), Nantes, France
| | - Philippe Marchand
- LUNAM Université, Oniris, UMR 1329 Laboratoire d'Etude des Résidus et Contaminants dans les Aliments (LABERCA), Nantes, France
| | - Bruno Le Bizec
- LUNAM Université, Oniris, UMR 1329 Laboratoire d'Etude des Résidus et Contaminants dans les Aliments (LABERCA), Nantes, France
| | - Jean-Philippe Antignac
- LUNAM Université, Oniris, UMR 1329 Laboratoire d'Etude des Résidus et Contaminants dans les Aliments (LABERCA), Nantes, France; INRA Centre Angers-Nantes, Nantes F-44307, France
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Field investigation to determine the environmental source of PCBs in a pig farm. Food Chem 2017; 245:394-401. [PMID: 29287387 DOI: 10.1016/j.foodchem.2017.10.105] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 10/17/2017] [Accepted: 10/19/2017] [Indexed: 11/23/2022]
Abstract
During a national monitoring plan, a pork fat sample was declared non-compliant for the sum of dioxins and PCB-DL (EU regulation). The National Reference Laboratory together with competent authorities conducted extended investigations to determine rapidly the contamination source at the farm level. A range of samples (n = 129), representative of potential contamination sources, was selected for further characterization (fat, feed, materials, dust, soil) and was analyzed for PCDD/Fs and DL-PCBs by GC-HRMS. A hot spot was localized in the farm, which corresponded to a pre-feed storage tank, the paints of which presented huge DL-PCB concentrations (>1 × 106 pg g-1), responsible for the contamination. The present case report describes a new source of PCB contamination, previously undescribed.
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Dervilly-Pinel G, Guérin T, Minvielle B, Travel A, Normand J, Bourin M, Royer E, Dubreil E, Mompelat S, Hommet F, Nicolas M, Hort V, Inthavong C, Saint-Hilaire M, Chafey C, Parinet J, Cariou R, Marchand P, Le Bizec B, Verdon E, Engel E. Micropollutants and chemical residues in organic and conventional meat. Food Chem 2017; 232:218-228. [DOI: 10.1016/j.foodchem.2017.04.013] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 03/21/2017] [Accepted: 04/03/2017] [Indexed: 11/16/2022]
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Ploteau S, Antignac JP, Volteau C, Marchand P, Vénisseau A, Vacher V, Le Bizec B. Distribution of persistent organic pollutants in serum, omental, and parietal adipose tissue of French women with deep infiltrating endometriosis and circulating versus stored ratio as new marker of exposure. ENVIRONMENT INTERNATIONAL 2016; 97:125-136. [PMID: 27575367 DOI: 10.1016/j.envint.2016.08.011] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Revised: 08/17/2016] [Accepted: 08/18/2016] [Indexed: 06/06/2023]
Abstract
Several studies have assessed the potential role of environmental chemicals in the onset, growth, and/or physiopathology of endometriosis. However, their contour in terms of considered exposure markers remains limited. The present study aimed to characterize the internal exposure levels of 78 persistent organic pollutants (POPs, including dioxins, polychlorobiphenyls, brominated flame retardants and organochlorine pesticides) in a set of 113 adult French women (45 controls, 68 cases), and to characterize the distribution of these POPs within three biological compartments (omental adipose tissue, parietal adipose tissue, and serum). For all targeted substances, the correlation between the concentrations measured in omental versus parietal adipose tissue was found strongly significant (p<0.0001). An equivalence of the measures performed in parietal and omental adipose tissue was moreover observed with median levels of 6.4 vs. 7.4pg/gl.w. for WHO-TEQ2005 PCDD/F, 4.5 vs. 4.7pg/gl.w. for WHO-TEQ2005 dl-PCB, 137.1 vs. 147.9ng/gl.w. for sum of 6 ndl-PCB, and 2.1 vs. 2.0ng/gl.w. for sum of 7 i-PBDE, respectively. The same observation was made for individual targeted OCs compounds. Significant correlations were also observed between these concentrations determined in adipose tissue and those measured in serum for dioxins (WHO-TEQ2005 PCDD/F=6.1pg/gl.w), PCBs (WHO-TEQ2005 dl-PCB=3.6pg/gl.w., sum of 6 ndl-PCB=81.1ng/gl.w.), and brominated flame-retardants (sum of 7 i-PBDE=0.9ng/gl.w.). The circulating versus stored ratio of some exposure markers (Sum PCDDs, 1,2,3,6,7,8-HxCDF, slightly versus highly chlorinated PCBs ratio, PBDE 99 and PBB 153) was found statistically different for control and case individuals. These extended exposure data from deep infiltrating endometriosis patients are the first ones available for France and give a new insight about the equilibrium of chemicals between storage and circulating compartments that should be further considered as new marker of exposure in the context of exposure-health relationship studies.
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Affiliation(s)
- Stéphane Ploteau
- LUNAM Université, Oniris, USC 1329 Laboratoire d'Etude des Résidus et Contaminants dans les Aliments (LABERCA), Nantes, France; Service de gynécologie-obstétrique, CIC FEA, Hôpital Mère Enfant, CHU Hôtel Dieu, Nantes, France
| | - Jean-Philippe Antignac
- LUNAM Université, Oniris, USC 1329 Laboratoire d'Etude des Résidus et Contaminants dans les Aliments (LABERCA), Nantes, France; INRA, Nantes F-44307, France.
| | | | - Philippe Marchand
- LUNAM Université, Oniris, USC 1329 Laboratoire d'Etude des Résidus et Contaminants dans les Aliments (LABERCA), Nantes, France
| | - Anaïs Vénisseau
- LUNAM Université, Oniris, USC 1329 Laboratoire d'Etude des Résidus et Contaminants dans les Aliments (LABERCA), Nantes, France
| | - Vincent Vacher
- LUNAM Université, Oniris, USC 1329 Laboratoire d'Etude des Résidus et Contaminants dans les Aliments (LABERCA), Nantes, France
| | - Bruno Le Bizec
- LUNAM Université, Oniris, USC 1329 Laboratoire d'Etude des Résidus et Contaminants dans les Aliments (LABERCA), Nantes, France
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Cigliano L, Nebbia C, Rychen G, Feidt C, Girolami F, Rossetti C, Spagnuolo MS. Evaluation of serum markers of blood redox homeostasis and inflammation in PCB naturally contaminated heifers undergoing decontamination. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 542:653-664. [PMID: 26546761 DOI: 10.1016/j.scitotenv.2015.10.104] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 10/15/2015] [Accepted: 10/21/2015] [Indexed: 06/05/2023]
Abstract
Dioxins and polychlorinated biphenyls (PCBs) are widely spread and long persistent contaminants. The aim of this study was to evaluate physiological changes associated with the decontamination of animals previously exposed to environmental pollutants. Eight Limousine heifers were removed from a polluted area and fed a standard ration for six months. The extent of contamination was defined by measuring total toxic equivalents (TEQ) values of dioxin like-PCBs (DL-PCBs), polychlorinated dibenzo-p-dioxins (PCDDs), and polychlorinated dibenzofurans (PCDFs), and NDL-PCBs amount in pericaudal fat two weeks after the removal from the contaminated area (day 0) and then bimonthly for six months during the decontamination (days 59, 125, and 188). The concentrations of both DL-PCBs + PCDD/Fs and NDL-PCBs at the start of decontamination (day 0) were higher than those legally admitted, and they were strongly decreased at the end of the experimental period. Specific indices of blood redox homeostasis and inflammation were also measured at each time. Serum concentrations of Retinol, Tocopherol and Ascorbate, the total antioxidant capacity (TAC) and the activities of superoxide dismutase and glutathione peroxidase were lower at day 0 than after 59, 125 or 188 days of decontamination. Protein-bound carbonyls (PC), nitro-tyrosine (N-Tyr), and lipid hydroperoxides concentrations were higher at day 0 than during decontamination. In addition, TAC, PC and N-Tyr levels correlated with both DL-PCB and NDL-PCB concentrations only at day 0. Serum concentrations of TNF-alpha and Haptoglobin were higher in samples collected at day 0 than in those obtained during decontamination. As Haptoglobin and TNF-alpha levels correlated with both DL-PCB and NDL-PCB concentrations at day 0 and at day 59 (when these concentrations are still over legal limit), they might represent easily measurable parameters for assessing acute exposure to pollutants. Further both N-Tyr and TNF-alpha concentrations could be used as bio-monitoring markers of the decontamination procedure.
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Affiliation(s)
- Luisa Cigliano
- Department of Biology, University of Naples Federico II, via Cinthia 121, 80126 Naples, Italy.
| | - Carlo Nebbia
- Department of Veterinary Sciences, University of Turin, Largo P. Braccini 2, 10095 Grugliasco, Italy.
| | - Guido Rychen
- Université de Lorraine, INRA, 2 avenue de la forêt de Haye, TSA 40602, 54518 Vandoeuvre Cedex, France.
| | - Cyril Feidt
- Université de Lorraine, INRA, 2 avenue de la forêt de Haye, TSA 40602, 54518 Vandoeuvre Cedex, France.
| | - Flavia Girolami
- Department of Veterinary Sciences, University of Turin, Largo P. Braccini 2, 10095 Grugliasco, Italy.
| | - Cristina Rossetti
- National Research Council (CNR), Institute of Animal Production System in Mediterranean Environments (ISPAAM), via Argine 1085, 80147 Naples, Italy.
| | - Maria Stefania Spagnuolo
- National Research Council (CNR), Institute of Animal Production System in Mediterranean Environments (ISPAAM), via Argine 1085, 80147 Naples, Italy.
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Liu Q, Spitsbergen JM, Cariou R, Huang CY, Jiang N, Goetz G, Hutz RJ, Tonellato PJ, Carvan MJ. Histopathologic alterations associated with global gene expression due to chronic dietary TCDD exposure in juvenile zebrafish. PLoS One 2014; 9:e100910. [PMID: 24988445 PMCID: PMC4079602 DOI: 10.1371/journal.pone.0100910] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 05/31/2014] [Indexed: 01/12/2023] Open
Abstract
The goal of this project was to investigate the effects and possible developmental disease implication of chronic dietary TCDD exposure on global gene expression anchored to histopathologic analysis in juvenile zebrafish by functional genomic, histopathologic and analytic chemistry methods. Specifically, juvenile zebrafish were fed Biodiet starter with TCDD added at 0, 0.1, 1, 10 and 100 ppb, and fish were sampled following 0, 7, 14, 28 and 42 d after initiation of the exposure. TCDD accumulated in a dose- and time-dependent manner and 100 ppb TCDD caused TCDD accumulation in female (15.49 ppb) and male (18.04 ppb) fish at 28 d post exposure. Dietary TCDD caused multiple lesions in liver, kidney, intestine and ovary of zebrafish and functional dysregulation such as depletion of glycogen in liver, retrobulbar edema, degeneration of nasal neurosensory epithelium, underdevelopment of intestine, and diminution in the fraction of ovarian follicles containing vitellogenic oocytes. Importantly, lesions in nasal epithelium and evidence of endocrine disruption based on alternatively spliced vasa transcripts are two novel and significant results of this study. Microarray gene expression analysis comparing vehicle control to dietary TCDD revealed dysregulated genes involved in pathways associated with cardiac necrosis/cell death, cardiac fibrosis, renal necrosis/cell death and liver necrosis/cell death. These baseline toxicological effects provide evidence for the potential mechanisms of developmental dysfunctions induced by TCDD and vasa as a biomarker for ovarian developmental disruption.
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Affiliation(s)
- Qing Liu
- Department of Biological Sciences, University of Wisconsin-Milwaukee, Lapham Hall, Milwaukee, Wisconsin, United States of America
- School of Freshwater Sciences, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin, United States of America
| | - Jan M. Spitsbergen
- Department of Microbiology, Oregon State University, Nash Hall, Corvallis, Oregon, United States of America
| | - Ronan Cariou
- LUNAM Université, Oniris, Laboratoire d’Etude des Résidus et Contaminants dans les Aliments (LABERCA), Nantes, France
| | - Chun-Yuan Huang
- Zilber School of Public Health, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin, United States of America
| | - Nan Jiang
- Roche NimbleGen, Inc., Madison, Wisconsin, United States of America
| | - Giles Goetz
- School of Aquatic and Fishery Sciences, University of Washington, Seattle Washington, United States of America
| | - Reinhold J. Hutz
- Department of Biological Sciences, University of Wisconsin-Milwaukee, Lapham Hall, Milwaukee, Wisconsin, United States of America
| | - Peter J. Tonellato
- Zilber School of Public Health, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin, United States of America
- Department of Pathology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States of America
- Center for Biomedical Informatics, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Michael J. Carvan
- Department of Biological Sciences, University of Wisconsin-Milwaukee, Lapham Hall, Milwaukee, Wisconsin, United States of America
- School of Freshwater Sciences, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin, United States of America
- * E-mail:
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Rychen G, Jurjanz S, Fournier A, Toussaint H, Feidt C. Exposure of ruminants to persistent organic pollutants and potential of decontamination. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:6440-6447. [PMID: 23764985 DOI: 10.1007/s11356-013-1882-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2012] [Accepted: 05/29/2013] [Indexed: 06/02/2023]
Abstract
Human activities are emitting persistent organic pollutants (POPs) to the environment. These compounds have raised concerns about the risk of transfer through the food chain via animal products. They are characterized by a strong persistence in environmental matrices and a lipophilicity which may lead to their accumulation in fat tissues. In EU Regulations (no. 1881/2006, 1259/2011), maximum acceptable levels for polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans (PCDD/Fs), and dioxin-like or nondioxin-like polychlorinated biphenyls (PCBs) in food of animal origin have been set. Transfer rates from contaminated fodder to milk have been established: for PCBs, the rate of transfer varies from 5 to 90% and for PCDD/Fs from 1 to 40%. The differential transfer of the compounds towards milk is related to the hydrophobicity of the pollutants and to their metabolic susceptibility. According to numerous authors, soil is the major reservoir for POPs, and its involuntary ingestion by farm animals reared outdoors may be the main cause of animal product contamination (meat, milk, or eggs). Recent studies seem to indicate that soil is a real risk matrix in terms of transfer of pollutants to the food chain. A POP crisis management is extremely difficult, since it impacts many farmers located in the contaminated area. The question arising is to know if livestock contaminated by POPs may be decontaminated and further used for their initial purpose. Recent data demonstrate that the decontamination process appear feasible and depends on initial level of contamination or the physiological status of the animals.
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Affiliation(s)
- Guido Rychen
- Unité de Recherche Animal et Fonctionnalités des Produits Animaux (UR AFPA), Université de Lorraine, INRA, ENSAIA, 2 avenue de la Forêt de Haye, BP 172, 54505, Vandoeuvre-lès-Nancy, France,
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Wohlfahrt-Veje C, Audouze K, Brunak S, Antignac JP, le Bizec B, Juul A, Skakkebæk NE, Main KM. Polychlorinated dibenzo-p-dioxins, furans, and biphenyls (PCDDs/PCDFs and PCBs) in breast milk and early childhood growth and IGF1. Reproduction 2014; 147:391-9. [PMID: 24586095 DOI: 10.1530/rep-13-0422] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Experimental studies have shown that dioxin-like chemicals may interfere with aspects of the endocrine system including growth. However, human background population studies are, however, scarce. We aimed to investigate whether early exposure of healthy infants to dioxin-like chemicals was associated with changes in early childhood growth and serum IGF1. In 418 maternal breast milk samples of Danish children (born 1997-2001) from a longitudinal cohort, we measured polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans, and polychlorinated biphenyls (pg or ng/g lipid) and calculated total toxic equivalent (total TEQ). SDS and SDS changes over time (ΔSDS) were calculated for height, weight, BMI, and skinfold fat percentage at 0, 3, 18, and 36 months of age. Serum IGF1 was measured at 3 months. We adjusted for confounders using multivariate regression analysis. Estimates (in parentheses) correspond to a fivefold increase in total TEQ. TEQ levels in breast milk increased significantly with maternal age and fish consumption and decreased with maternal birth year, parity, and smoking. Total TEQ was associated with lower fat percentage (-0.45 s.d., CI: -0.89; -0.04), non-significantly with lower weight and length at 0 months, accelerated early height growth (increased ΔSDS) (ΔSDS 0-18 months: +0.77 s.d., CI: 0.34; 1.19) and early weight increase (ΔSDS 0-18: +0.52 s.d., CI: 0.03; 1.00), and increased IGF1 serum levels at 3 months (+13.9 ng/ml, CI: 2.3; 25.5). Environmental exposure to dioxin-like chemicals was associated with being skinny at birth and with higher infant levels of circulating IGF1 as well as accelerated early childhood growth (rapid catch-up growth).
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Affiliation(s)
- Christine Wohlfahrt-Veje
- Department of Growth and Reproduction, The Faculty of Medical and Health Sciences, University Hospital of Copenhagen, Rigshospitalet, University of Copenhagen, 5064, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen Ø, Denmark
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Radulović NS, Blagojević PD. Average mass scan of the total ion chromatograms: A new gas chromatography–mass spectrometry derived variable for fast and reliable multivariate statistical treatment of essential oil compositional data. J Chromatogr A 2013; 1301:190-9. [DOI: 10.1016/j.chroma.2013.05.039] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Revised: 04/23/2013] [Accepted: 05/16/2013] [Indexed: 12/26/2022]
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Mohamadi Monavar H, Afseth N, Lozano J, Alimardani R, Omid M, Wold J. Determining quality of caviar from Caspian Sea based on Raman spectroscopy and using artificial neural networks. Talanta 2013; 111:98-104. [DOI: 10.1016/j.talanta.2013.02.046] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Revised: 02/16/2013] [Accepted: 02/18/2013] [Indexed: 10/27/2022]
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La Merrill M, Emond C, Kim MJ, Antignac JP, Le Bizec B, Clément K, Birnbaum LS, Barouki R. Toxicological function of adipose tissue: focus on persistent organic pollutants. ENVIRONMENTAL HEALTH PERSPECTIVES 2013; 121:162-9. [PMID: 23221922 PMCID: PMC3569688 DOI: 10.1289/ehp.1205485] [Citation(s) in RCA: 231] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Accepted: 12/04/2012] [Indexed: 05/17/2023]
Abstract
BACKGROUND Adipose tissue (AT) is involved in several physiological functions, including metabolic regulation, energy storage, and endocrine functions. OBJECTIVES In this review we examined the evidence that an additional function of AT is to modulate persistent organic pollutant (POP) toxicity through several mechanisms. METHODS We reviewed the literature on the interaction of AT with POPs to provide a comprehensive model for this additional function of AT. DISCUSSION As a storage compartment for lipophilic POPs, AT plays a critical role in the toxicokinetics of a variety of drugs and pollutants, in particular, POPs. By sequestering POPs, AT can protect other organs and tissues from POPs overload. However, this protective function could prove to be a threat in the long run. The accumulation of lipophilic POPs will increase total body burden. These accumulated POPs are slowly released into the bloodstream, and more so during weight loss. Thus, AT constitutes a continual source of internal exposure to POPs. In addition to its buffering function, AT is also a target of POPs and may mediate part of their metabolic effects. This is particularly relevant because many POPs induce obesogenic effects that may lead to quantitative and qualitative alterations of AT. Some POPs also induce a proinflammatory state in AT, which may lead to detrimental metabolic effects. CONCLUSION AT appears to play diverse functions both as a modulator and as a target of POPs toxicity.
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Affiliation(s)
- Michele La Merrill
- Department of Preventive Medicine, Mount Sinai School of Medicine, New York, New York, USA
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Abstract
Human activities produce polluting compounds such as persistent organic pollutants (POPs), which may interact with agriculture. These molecules have raised concern about the risk of transfer through the food chain via the animal product. POPs are characterised by a strong persistence in the environment, a high volatility and a lipophilicity, which lead to their accumulation in fat tissues. These compounds are listed in international conventions to organise the information about their potential toxicity for humans and the environment. The aim of this paper is to synthesise current information on dairy ruminant exposure to POPs and the risk of their transfer to milk. Three major groups of POPs have been considered: the polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), the polychlorobiphenyls (PCBs) and the polycyclic aromatic hydrocarbons (PAHs). The results show that contamination of fodder and soil by these compounds is observed when they are exposed to emission sources (steelworks, cementworks, waste incinerators or motorways) compared with remote areas. In general, soil contamination is considered higher than plant contamination. Highest concentrations of POPs in soil may be close to 1000 ng/kg dry matter (DM) for PCDD/Fs, to 10 000 mg/kg DM for PAHs and 100 μg/kg DM for PCBs. The contamination of milk by POPs depends on environmental factors, factors related to the rearing system (fodder and potentially contaminated soil, stage of lactation, medical state of the herd) and of the characteristics of the contaminants. Transfer rates to milk have been established: for PCBs the rate of transfer varies from 5% to 90%, for PCDD/Fs from 1% to 40% and for PAHs from 0.5% to 8%. The differential transfer of the compounds towards milk is related to the hydrophobicity of the pollutants as well as to the metabolic susceptibility of the compounds.
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Sirot V, Tard A, Venisseau A, Brosseaud A, Marchand P, Le Bizec B, Leblanc JC. Dietary exposure to polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans and polychlorinated biphenyls of the French population: Results of the second French Total Diet Study. CHEMOSPHERE 2012; 88:492-500. [PMID: 22487562 DOI: 10.1016/j.chemosphere.2012.03.004] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2011] [Revised: 02/02/2012] [Accepted: 03/05/2012] [Indexed: 05/31/2023]
Abstract
Polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) and polychlorinated biphenyls (PCBs) bioaccumulate through the food chain and are therefore of public health concern. Exposure to these compounds was assessed in the second French Total Diet Study (TDS). Food samples (n=583) were collected to be representative of the whole diet of the population, prepared as consumed, and analyzed. Contamination data were combined with national individual food consumption data. Mean exposure (95th percentile) to PCDD/F+DL-PCBs was assessed to be 0.57 (1.29) pg TEQ(WHO-98) (kg bw)(-1) d(-1) in the adult population and 0.89 (2.02) pg TEQ(WHO-98) (kg bw)(-1) d(-1) in the child and teenager population. Less than 4% of the population exceeded the health-based guidance value for PCDD/F+DL-PCBs. Mean exposure (95th percentile) to the six indicator PCBs (PCB 28, 52, 101, 138, 153, 180) was estimated at 2.71 (7.90) ng (kg bw)(-1) d(-1) in the adult population and 3.77 (11.7) ng (kg bw)(-1) d(-1) in the child and teenager population. Only 2.6% of the adults [CI(95%): 1.9; 3.3] and 6.5% of the children and teenagers [5.2; 7.8] exceeded the health-based guidance value for total PCBs. These results show that the contamination levels in food and therefore the exposure of the general French population to PCDD/Fs and PCBs have declined (by a factor of 3.2 for PCDD/F+DL-PCBs and about three for total PCBs) since the last evaluation, which was conducted using another methodology in 2005 and 2007, and show the efficiency of the European risk management measures which came into force after these evaluations.
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Affiliation(s)
- Véronique Sirot
- French Agency for Food, Environmental and Occupational Health & Safety (ANSES, Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail), 27 avenue du Général Leclerc, F-94701 Maisons-Alfort, France
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Marchand P, Cariou R, Vénisseau A, Brosseaud A, Antignac JP, Le Bizec B. Predicting PCDD/F and dioxin-like PCB contamination levels in bovine edible tissues from in vivo sampling. CHEMOSPHERE 2010; 80:634-640. [PMID: 20537684 DOI: 10.1016/j.chemosphere.2010.04.057] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2010] [Revised: 03/23/2010] [Accepted: 04/22/2010] [Indexed: 05/29/2023]
Abstract
European Union regulation has defined maximum levels for polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans (PCDD/F) and dioxin-like polychlorinated biphenyls (PCB) in food from animal origin. In case of particular event where livestock is potentially exposed to a specific source of contamination, the possibility of accurate estimation of the PCDD/F and dioxin-like PCB levels in edible tissues of the animals from in vivo and weakly invasive biological matrices (fast animal recovery, no major side effects) may be of clear valuable interest. This study investigated the correlations between contamination levels determined in subcutaneous adipose tissue and blood samples obtained from living animals and those measured after slaughtering in muscle and liver. The obtained results demonstrated very good correlations between these in vivo and ex vivo samples in terms of PCDD/F and PCB contamination levels. Finally, it seems to be demonstrated that a weakly invasive biopsy of subcutaneous adipose tissue performed on living animal (potentially completed by a blood sample) can be used in order to predict contamination levels in muscle and liver destined to human consumption.
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Affiliation(s)
- Philippe Marchand
- ONIRIS, USC 2013, LABERCA, Atlanpole-La Chantrerie, BP 50707, Nantes F-44307, France
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Towey TP, Chang SC, Demond A, Wright D, Barabás N, Franzblau A, Garabrant DH, Gillespie BW, Lepkowski J, Luksemburg W, Adriaens P. Hierarchical cluster analysis of polychlorinated dioxins and furans in Michigan, USA, soils: evaluation of industrial and background congener profiles. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2010; 29:64-72. [PMID: 20821420 DOI: 10.1002/etc.24] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
As part of the University of Michigan Dioxin Exposure Study, soil samples were collected from 766 residential properties near the Tittabawassee River between Midland and Saginaw; near the Dow Chemical Facility in Midland; and, for comparison, in the other areas of Midland and Saginaw Counties and in Jackson and Calhoun Counties, all located in the state of Michigan, USA. A total of 2,081 soil samples were analyzed for 17 polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs). In order to better understand the distribution and sources of the PCDD/F congeners in the study area, hierarchical cluster analysis (HCA) was used to statistically group samples with similar congener patterns. The analysis yielded a total of 13 clusters, including: 3 clusters among the soils impacted by contamination present in the Tittabawassee River sediments, a cluster comprised mainly of samples collected within the depositional area of the Dow incinerator complex, a small cluster of samples with elevated 2,3,7,8-tetrachlorinated dibenzo-p-dioxin (TCDD), and several clusters exhibiting background patterns. The clusters related to the Tittabawassee River floodplain contamination all contained elevated PCDF levels and were differentiated from one another primarily by their relative concentrations of higher-chlorinated PCDDs, a difference likely related to both extent and timing of impacts from Tittabawassee sediments. The background clusters appear to be related to combustion processes and are differentiated, in part, by their relative fractions of TCDD. Thus, HCA was useful for identifying congener profile characteristics in both contaminated and background soil samples.
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Affiliation(s)
- Timothy P Towey
- Department of Civil and Environmental Engineering, University of Michigan College of Engineering, Ann Arbor, Michigan 48109, USA.
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Gogal RM, Holladay SD. Perinatal TCDD exposure and the adult onset of autoimmune disease. J Immunotoxicol 2009; 5:413-8. [PMID: 19404875 DOI: 10.1080/10408360802483201] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
Modulation of the developing immune system can occur following perinatal exposure to a number of immunotoxic compounds, including polyhalogenated hydrocarbons like 2,3,7,8-tetra-chlorodibenzo-p-dioxin (TCDD; dioxin), the most toxic of the congeners. Studies in rodents have shown immunologic effects from perinatal TCDD exposure are more severe and persistent than following exposure in the adult, and include what appears to be life-long immunosuppression. Whether prenatal TCDD exposure may predispose an individual to postnatal autoimmune disease remains largely unknown. TCDD crosses the placenta and alters normal prenatal thymocyte maturation, T-cell receptor expression and expression of thymic major histocompatability complex Class II molecules. During the juvenile stage, mice exposed to TCDD prenatally show increased peripheral T-cells possessing "autoreactive" variable-beta receptors. These data suggest that gestational exposure to TCDD may interfere with normal development of central tolerance in the thymus. In possible support of this theory, when autoimmune disease-prone mice were treated with TCDD during gestation, postnatal autoimmunity had an accelerated onset and was exacerbated. This review provides an overview of the currently available information, which appears to support a hypothesis for increased risk of postnatal autoimmune responses as a result of TCDD exposure during the sensitive time of immune system establishment.
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Affiliation(s)
- R M Gogal
- Center for Molecular Medicine and Infectious Diseases, College of Veterinary Medicine, Virginia Tech University, Blacksburg, VA 24061, USA.
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Berrueta LA, Alonso-Salces RM, Héberger K. Supervised pattern recognition in food analysis. J Chromatogr A 2007; 1158:196-214. [PMID: 17540392 DOI: 10.1016/j.chroma.2007.05.024] [Citation(s) in RCA: 567] [Impact Index Per Article: 33.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2007] [Revised: 05/05/2007] [Accepted: 05/07/2007] [Indexed: 11/25/2022]
Abstract
Data analysis has become a fundamental task in analytical chemistry due to the great quantity of analytical information provided by modern analytical instruments. Supervised pattern recognition aims to establish a classification model based on experimental data in order to assign unknown samples to a previously defined sample class based on its pattern of measured features. The basis of the supervised pattern recognition techniques mostly used in food analysis are reviewed, making special emphasis on the practical requirements of the measured data and discussing common misconceptions and errors that might arise. Applications of supervised pattern recognition in the field of food chemistry appearing in bibliography in the last two years are also reviewed.
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Affiliation(s)
- Luis A Berrueta
- Departamento de Química Analítica, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea, P.O. Box 644, E-48080 Bilbao, Spain.
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