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Guillotin S, Delcourt N. Studying the Impact of Persistent Organic Pollutants Exposure on Human Health by Proteomic Analysis: A Systematic Review. Int J Mol Sci 2022; 23:ijms232214271. [PMID: 36430748 PMCID: PMC9692675 DOI: 10.3390/ijms232214271] [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: 10/28/2022] [Revised: 11/14/2022] [Accepted: 11/15/2022] [Indexed: 11/19/2022] Open
Abstract
Persistent organic pollutants (POPs) are organic chemical substances that are widely distributed in environments around the globe. POPs accumulate in living organisms and are found at high concentrations in the food chain. Humans are thus continuously exposed to these chemical substances, in which they exert hepatic, reproductive, developmental, behavioral, neurologic, endocrine, cardiovascular, and immunologic adverse health effects. However, considerable information is unknown regarding the mechanism by which POPs exert their adverse effects in humans, as well as the molecular and cellular responses involved. Data are notably lacking concerning the consequences of acute and chronic POP exposure on changes in gene expression, protein profile, and metabolic pathways. We conducted a systematic review to provide a synthesis of knowledge of POPs arising from proteomics-based research. The data source used for this review was PubMed. This study was carried out following the PRISMA guidelines. Of the 742 items originally identified, 89 were considered in the review. This review presents a comprehensive overview of the most recent research and available solutions to explore proteomics datasets to identify new features relevant to human health. Future perspectives in proteomics studies are discussed.
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Affiliation(s)
- Sophie Guillotin
- Poison Control Centre, Toulouse University Hospital, 31059 Toulouse, France
- INSERM UMR 1295, Centre d’Epidémiologie et de Recherche en Santé des Populations, 31000 Toulouse, France
| | - Nicolas Delcourt
- Poison Control Centre, Toulouse University Hospital, 31059 Toulouse, France
- INSERM UMR 1214, Toulouse NeuroImaging Center, 31024 Toulouse, France
- Correspondence: ; Tel.: +33-(0)-567691640
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2
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Herlin M, Sánchez-Pérez I, Esteban J, Korkalainen M, Barber X, Finnilä MAJ, Hamscher G, Joseph B, Viluksela M, Håkansson H. Bone toxicity induced by 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and the retinoid system: A causality analysis anchored in osteoblast gene expression and mouse data. Reprod Toxicol 2021; 105:25-43. [PMID: 34363983 DOI: 10.1016/j.reprotox.2021.07.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 07/16/2021] [Accepted: 07/30/2021] [Indexed: 12/18/2022]
Abstract
Dioxin exposures impact on bone quality and osteoblast differentiation, as well as retinoic acid metabolism and signaling. In this study we analyzed associations between increased circulating retinol concentrations and altered bone mineral density in a mouse model following oral exposure to 2,3,7,8-tetrachlordibenzo-p-dioxin (TCDD). Additionally, effects of TCDD on differentiation marker genes and genes involved with retinoic acid metabolism were analysed in an osteoblast cell model followed by benchmark dose-response analyses of the gene expression data. Study results show that the increased trabecular and decreased cortical bone mineral density in the mouse model following TCDD exposure are associated with increased circulating retinol concentrations. Also, TCDD disrupted the expression of genes involved in osteoblast differentiation and retinoic acid synthesis, degradation, and nuclear translocation in directions compatible with increasing cellular retinoic acid levels. Further evaluation of the obtained results in relation to previously published data by the use of mode-of-action and weight-of-evidence inspired analytical approaches strengthened the evidence that TCDD-induced bone and retinoid system changes are causally related and compatible with an endocrine disruption mode of action.
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Affiliation(s)
- Maria Herlin
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
| | - Ismael Sánchez-Pérez
- Instituto de Bioingeniería, Universidad Miguel Hernández de Elche, Elche, Alicante, Spain.
| | - Javier Esteban
- Instituto de Bioingeniería, Universidad Miguel Hernández de Elche, Elche, Alicante, Spain.
| | - Merja Korkalainen
- Environmental Health Unit, Finnish Institute for Health and Welfare (THL), Kuopio, Finland.
| | - Xavier Barber
- Centro de Investigación Operativa, Universidad Miguel Hernández, Elche, Alicante, Spain.
| | - Mikko A J Finnilä
- Research Unit of Medical Imaging, Physics, and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland.
| | - Gerd Hamscher
- Institute of Food Chemistry and Food Biotechnology, Justus Liebig University Giessen, 10 Giessen, Germany.
| | - Bertrand Joseph
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
| | - Matti Viluksela
- Environmental Health Unit, Finnish Institute for Health and Welfare (THL), Kuopio, Finland; School of Pharmacy (Toxicology) and Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland.
| | - Helen Håkansson
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
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Całkosińska A, Dominiak M, Sobolewska S, Leśków A, Tarnowska M, Całkosiński A, Dobrzyński M. The Protective Effect of Xanthohumol on the Content of Selected Elements in the Bone Tissue for Exposed Japanese Quails to TCDD. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E5883. [PMID: 32823692 PMCID: PMC7460139 DOI: 10.3390/ijerph17165883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 08/04/2020] [Accepted: 08/05/2020] [Indexed: 11/25/2022]
Abstract
Dioxins (including 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) are highly toxic and persistent chemicals widely distributed in the environment in trace amounts, and are side products of industrial and chemical processes. Exposure to dioxins leads to multiorgan morphological and functional abnormalities, including within the bone tissue, disrupting its microarchitecture and mechanical properties. Xanthohumol (XN) is a chemical compound classified as a prenylated flavonoid, distinguished by multidirectional biological action. The aim of the study is to assess whether xanthohumol, as a substance with strong antioxidant and anti-inflammatory properties, has the ability to eliminate the negative effects of TCDD on bone tissue. The experiment was conducted on adult Japanese quails. Two different doses of TCDD and xanthohumol were administered to birds. After euthanasia of animals, the research material in the form of cranial vault and hind limb bone was collected, and their mineral compositions of calcium, phosphorus, magnesium, zinc, and iron concentrations were determined using atomic emission spectrometry in an acetylene-air flame method. Our results indicate that the administration of TCDD at a low dose causes more dynamic changes in the concentration of elements in bone, in comparison to a higher dose of dioxin. Results show also that higher doses of the XN cause the linear increase in the concentration of phosphorus and iron in the bone of the hind limb, and calcium in the bones of the cranial vault. In conclusion, our experiment shows that the use of TCDD and XN in Japanese quails together in various doses influences the content of phosphorus, magnesium, zinc, and iron in the research material.
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Affiliation(s)
- Aleksandra Całkosińska
- Department of Oral Surgery, Wroclaw Medical University, Krakowska 26 Street, 50-425 Wroclaw, Poland;
| | - Marzena Dominiak
- Department of Oral Surgery, Wroclaw Medical University, Krakowska 26 Street, 50-425 Wroclaw, Poland;
| | - Sylwia Sobolewska
- Department of Animal Nutrition and Feed Management, Wroclaw University of Environmental and Life Sciences, Chelmonskiego 38c Street, 51-630 Wroclaw, Poland;
| | - Anna Leśków
- Department of Nervous System Diseases, Faculty of Health Science, Wroclaw Medical University, Bartla Street 5, 51-618 Wroclaw, Poland; (A.L.); (M.T.)
| | - Małgorzata Tarnowska
- Department of Nervous System Diseases, Faculty of Health Science, Wroclaw Medical University, Bartla Street 5, 51-618 Wroclaw, Poland; (A.L.); (M.T.)
| | - Aleksander Całkosiński
- Students’ Scientific Association of Biomaterials and Experimental Dentistry, Wroclaw Medical University, Bujwida 44 Street, 50-368 Wroclaw, Poland;
| | - Maciej Dobrzyński
- Department of Conservative Dentistry and Pedodontics, Wroclaw Medical University, Krakowska 26 Street, 50-425 Wroclaw, Poland;
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Dobrzynski M, Kuropka P, Tarnowska M, Styczynska M, Dudek K, Leskow A, Targonska S, Wiglusz RJ. The Protective Effect of α-Tocopherol on the Content of Selected Elements in the Calvaria for Exposed Hens to TCDD in the Early Embryonic Period. Biol Trace Elem Res 2019; 190:517-525. [PMID: 30465169 DOI: 10.1007/s12011-018-1580-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 11/13/2018] [Indexed: 01/22/2023]
Abstract
This paper focuses on negative effects of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) on element content in male chicken calvaria and α-tocopherol (vitamin E) ability to reduce its toxic potential on bone mineralization in offspring. In the experiment carried out once, a solution containing only DMSO, TCDD, TCDD + α-tocopherol, and exclusively α-tocopherol was administrated. Subsequently, on the 5th day after hatching, the mineral composition of the chicken calvaria was evaluated. The results obtained suggest that the use of α-tocopherol contributes to the maintenance of the concentration of calcium, magnesium, and manganese in the chicken calvaria treated with TCDD in the embryonic period. In turn, vitamin E increases the level of zinc. It has been found that α-tocopherol in chicken embryos has a protective effect against disturbance of level of chosen trace elements in the bones of offspring caused by the TCDD.
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Affiliation(s)
- Maciej Dobrzynski
- Department of Conservative Dentistry and Pedodontics, Krakowska 26, 50-425, Wroclaw, Poland.
| | - Piotr Kuropka
- Department of Histology and Embriology, Wroclaw University of Environmental and Life Sciences, Norwida 31, 50-375, Wroclaw, Poland
| | - Malgorzata Tarnowska
- Department of Nervous System Diseases, Wroclaw Medical University, Poland Medical University, Bartla 5, 51-618, Wroclaw, Poland
| | - Marzena Styczynska
- Department of Human Nutrition, Wroclaw University of Environmental and Life Science, C.K. Norwida 25, 50-375, Wroclaw, Poland
| | - Krzysztof Dudek
- Faculty of Mechanical Engineering, Technical University of Wroclaw, Lukasiewicza 5, 50-371, Wroclaw, Poland
| | - Anna Leskow
- Department of Nervous System Diseases, Wroclaw Medical University, Poland Medical University, Bartla 5, 51-618, Wroclaw, Poland
| | - Sara Targonska
- Polish Academy of Sciences, Institute of Low Temperature and Structure Research, Okolna 2, 50-422, Wroclaw, Poland
| | - Rafal J Wiglusz
- Polish Academy of Sciences, Institute of Low Temperature and Structure Research, Okolna 2, 50-422, Wroclaw, Poland.
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5
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Dobrzynski M, Kuropka P, Tarnowska M, Dudek K, Styczynska M, Leskow A, Targonska S, Wiglusz RJ. Indirect study of the effect of α-tocopherol and acetylsalicylic acid on the mineral composition of bone tissue in the offspring of female rats treated with 2,3,7,8-tetrachlorodibenzo- p-dioxin: long-term observations. RSC Adv 2019; 9:8016-8024. [PMID: 35547832 PMCID: PMC9087305 DOI: 10.1039/c8ra10485a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 02/15/2019] [Indexed: 11/21/2022] Open
Abstract
This paper discusses problems related to the influence of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) on the mineral composition of the calvaria in the offspring of female rats.
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Affiliation(s)
- Maciej Dobrzynski
- Department of Conservative Dentistry and Pedodontics, The Faculty of Dentistry, Wroclaw Medical University, Wroclaw, Poland
| | - Piotr Kuropka
- Department of Histology and Embryology, Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, Wroclaw, Poland
| | - Malgorzata Tarnowska
- Department of Nervous System Diseases, Faculty of Health Science, Wroclaw Medical University, Wroclaw, Poland
| | - Krzysztof Dudek
- Department of Logistics and Transport Systems, Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, Wroclaw, Poland
| | - Marzena Styczynska
- Department of Human Nutrition, Faculty of Food Science, Wroclaw University of Environmental and Life Sciences, Wroclaw, Poland
| | - Anna Leskow
- Department of Nervous System Diseases, Faculty of Health Science, Wroclaw Medical University, Wroclaw, Poland
| | - Sara Targonska
- Institute of Low Temperature and Structure Research, Polish Academy of Science, Wroclaw, Poland
| | - Rafal J. Wiglusz
- Institute of Low Temperature and Structure Research, Polish Academy of Science, Wroclaw, Poland
- Centre for Advanced Materials and Smart Structures, Polish Academy of Sciences, Wroclaw, Poland
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6
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Dobrzynski M, Pezowicz C, Tomanik M, Kuropka P, Dudek K, Fita K, Styczynska M, Wiglusz RJ. Modulating effect of selected pharmaceuticals on bone in female rats exposed to 2,3,7,8-tetrachlorodibenzo- p-dioxin (TCDD). RSC Adv 2018; 8:27537-27545. [PMID: 35540011 PMCID: PMC9083442 DOI: 10.1039/c8ra03619e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 07/20/2018] [Indexed: 01/27/2023] Open
Abstract
This paper discusses the problems connected with the influence of TCDD on the mechanical properties and structure of the bone tissue in female rats treated with the dioxin. Moreover an analysis of the protective role of tocopherol, acetylsalicylic acid, dexamethazone and levamisol was performed. Rat tibiae were assessed by mechanical testing, and histological and trace element analysis. It was proved that TCDD has negative effect on bone mechanical properties, histological microstructure and trace element content. The results indicate that usage of both steroid and non-steroid anti-inflammatory medicaments, along with tocopherol and levamisol, modulating their activity, can reduce the negative effect of dioxin activity on the bone tissue of female rats intoxicated with TCDD.
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Affiliation(s)
- Maciej Dobrzynski
- Department of Conservative Dentistry and Pedodontics, The Faculty of Dentistry, Wroclaw Medical University Poland +48(71)784-03-62 +48(71)784-03-61
| | - Celina Pezowicz
- Department of Biomedical Engineering, Mechatronics and Theory of Mechanisms, Faculty of Mechanical Engineering, Wroclaw University of Science and Technology Poland
| | - Magdalena Tomanik
- Department of Biomedical Engineering, Mechatronics and Theory of Mechanisms, Faculty of Mechanical Engineering, Wroclaw University of Science and Technology Poland
| | - Piotr Kuropka
- Department of Histology and Embryology, Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences Poland
| | - Krzysztof Dudek
- Department of Logistics and Transport Systems, Faculty of Mechanical Engineering, Wroclaw University of Science and Technology Poland
| | - Katarzyna Fita
- Department of Conservative Dentistry and Pedodontics, The Faculty of Dentistry, Wroclaw Medical University Poland +48(71)784-03-62 +48(71)784-03-61
| | - Marzena Styczynska
- Department of Human Nutrition, Faculty of Food Science, Wroclaw University of Environmental and Life Sciences Poland
| | - Rafal J Wiglusz
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences Okolna 2 50-422 Wroclaw Poland +48(71)344-10-29 +48(71)395-41-59
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Fader KA, Nault R, Raehtz S, McCabe LR, Zacharewski TR. 2,3,7,8-Tetrachlorodibenzo-p-dioxin dose-dependently increases bone mass and decreases marrow adiposity in juvenile mice. Toxicol Appl Pharmacol 2018; 348:85-98. [PMID: 29673856 PMCID: PMC5984050 DOI: 10.1016/j.taap.2018.04.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 04/03/2018] [Accepted: 04/11/2018] [Indexed: 12/20/2022]
Abstract
2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) and other aryl hydrocarbon receptor (AhR) agonists have been shown to regulate bone development and remodeling in a species-, ligand-, and age-specific manner, however the underlying mechanisms remain poorly understood. In this study, we characterized the effect of 0.01-30 μg/kg TCDD on the femoral morphology of male and female juvenile mice orally gavaged every 4 days for 28 days and used RNA-Seq to investigate gene expression changes associated with the resultant phenotype. Micro-computed tomography revealed that TCDD dose-dependently increased trabecular bone volume fraction (BVF) 2.9- and 3.3-fold in male and female femurs, respectively. Decreased serum tartrate-resistant acid phosphatase (TRAP) levels, combined with a reduced osteoclast surface to bone surface ratio and repression of femoral proteases (cathepsin K, matrix metallopeptidase 13), suggests that TCDD impaired bone resorption. Increased osteoblast counts at the trabecular bone surface were consistent with a reciprocal reduction in the number of bone marrow adipocytes, suggesting AhR activation may direct mesenchymal stem cell differentiation towards osteoblasts rather than adipocytes. Notably, femoral expression of transmembrane glycoprotein NMB (Gpnmb; osteoactivin), a positive regulator of osteoblast differentiation and mineralization, was dose-dependently induced up to 18.8-fold by TCDD. Moreover, increased serum levels of 1,25-dihydroxyvitamin D3 were in accordance with the renal induction of 1α-hydroxylase Cyp27b1 and may contribute to impaired bone resorption. Collectively, the data suggest AhR activation tipped the bone remodeling balance towards bone formation, resulting in increased bone mass with reduced marrow adiposity.
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Affiliation(s)
- Kelly A Fader
- Department of Biochemistry & Molecular Biology, Michigan State University, East Lansing, MI 48824, United States; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, United States
| | - Rance Nault
- Department of Biochemistry & Molecular Biology, Michigan State University, East Lansing, MI 48824, United States; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, United States
| | - Sandi Raehtz
- Department of Physiology, Michigan State University, East Lansing, MI 48824, United States
| | - Laura R McCabe
- Department of Physiology, Michigan State University, East Lansing, MI 48824, United States; Department of Radiology, Michigan State University, East Lansing, MI 48824, United States
| | - Timothy R Zacharewski
- Department of Biochemistry & Molecular Biology, Michigan State University, East Lansing, MI 48824, United States; Institute for Integrative Toxicology, Michigan State University, East Lansing, MI 48824, United States.
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Yun C, Katchko KM, Schallmo MS, Jeong S, Yun J, Chen CH, Weiner JA, Park C, George A, Stupp SI, Hsu WK, Hsu EL. Aryl Hydrocarbon Receptor Antagonists Mitigate the Effects of Dioxin on Critical Cellular Functions in Differentiating Human Osteoblast-Like Cells. Int J Mol Sci 2018; 19:ijms19010225. [PMID: 29324662 PMCID: PMC5796174 DOI: 10.3390/ijms19010225] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 12/20/2017] [Accepted: 01/10/2018] [Indexed: 01/31/2023] Open
Abstract
The inhibition of bone healing in humans is a well-established effect associated with cigarette smoking, but the underlying mechanisms are still unclear. Recent work using animal cell lines have implicated the aryl hydrocarbon receptor (AhR) as a mediator of the anti-osteogenic effects of cigarette smoke, but the complexity of cigarette smoke mixtures makes understanding the mechanisms of action a major challenge. 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD, dioxin) is a high-affinity AhR ligand that is frequently used to investigate biological processes impacted by AhR activation. Since there are dozens of AhR ligands present in cigarette smoke, we utilized dioxin as a prototype ligand to activate the receptor and explore its effects on pro-osteogenic biomarkers and other factors critical to osteogenesis using a human osteoblast-like cell line. We also explored the capacity for AhR antagonists to protect against dioxin action in this context. We found dioxin to inhibit osteogenic differentiation, whereas co-treatment with various AhR antagonists protected against dioxin action. Dioxin also negatively impacted cell adhesion with a corresponding reduction in the expression of integrin and cadherin proteins, which are known to be involved in this process. Similarly, the dioxin-mediated inhibition of cell migration correlated with reduced expression of the chemokine receptor CXCR4 and its ligand, CXCL12, and co-treatment with antagonists restored migratory capacity. Our results suggest that AhR activation may play a role in the bone regenerative response in humans exposed to AhR activators, such as those present in cigarette smoke. Given the similarity of our results using a human cell line to previous work done in murine cells, animal models may yield data relevant to the human setting. In addition, the AhR may represent a potential therapeutic target for orthopedic patients who smoke cigarettes, or those who are exposed to secondhand smoke or other environmental sources of aryl hydrocarbons.
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Affiliation(s)
- Chawon Yun
- Department of Orthopaedic Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.
| | - Karina M Katchko
- Department of Orthopaedic Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.
| | - Michael S Schallmo
- Department of Orthopaedic Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.
| | - Soyeon Jeong
- Department of Orthopaedic Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.
| | - Jonghwa Yun
- Department of Orthopaedic Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.
| | - Charlotte H Chen
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA.
| | - Joseph A Weiner
- Department of Orthopaedic Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.
| | - Christian Park
- Department of Orthopaedic Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.
| | - Andrew George
- Department of Orthopaedic Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.
| | - Samuel I Stupp
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA.
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA.
- Department of Chemistry, Northwestern University, Evanston, IL 60208, USA.
- Department of Medicine, Northwestern University, Chicago, IL 60611, USA.
| | - Wellington K Hsu
- Department of Orthopaedic Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.
| | - Erin L Hsu
- Department of Orthopaedic Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.
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Environmental factors associated with familial or non-familial forms of Paget's disease of bone. Joint Bone Spine 2017; 84:719-723. [DOI: 10.1016/j.jbspin.2016.11.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 11/23/2016] [Indexed: 11/22/2022]
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10
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Choi EM, Suh KS, Jung WW, Park SY, Chin SO, Rhee SY, Pak YK, Chon S. Actein alleviates 2,3,7,8-tetrachlorodibenzo-p-dioxin-mediated cellular dysfunction in osteoblastic MC3T3-E1 cells. ENVIRONMENTAL TOXICOLOGY 2017; 32:2455-2470. [PMID: 28836330 DOI: 10.1002/tox.22459] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 07/30/2017] [Accepted: 08/06/2017] [Indexed: 06/07/2023]
Abstract
The environmental pollutant 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) is known to affect bone metabolism. We evaluated the protective effects of the triterpene glycoside actein from the herb black cohosh against TCDD-induced toxicity in MC3T3-E1 osteoblastic cells. We found that TCDD significantly reduced cell viability and increased apoptosis and autophagy in MC3T3-E1 osteoblastic cells (P < .05). In addition, TCDD treatment resulted in a significant increase in intracellular calcium concentration, mitochondrial membrane potential collapse, reactive oxygen species (ROS) production, and cardiolipin peroxidation, whereas pretreatment with actein significantly mitigated these effects (P < .05). The effects of TCDD on extracellular signal-related kinase (ERK), aryl hydrocarbon receptor, aryl hydrocarbon receptor repressor, and cytochrome P450 1A1 levels in MC3T3-E1 cells were significantly inhibited by actein. The levels of superoxide dismutase, ERK1, and nuclear factor kappa B mRNA were also effectively restored by pretreatment with actein. Furthermore, actein treatment resulted in a significant increase in alkaline phosphatase (ALP) activity and collagen content, as well as in the expression of genes associated with osteoblastic differentiation (ALP, type I collagen, osteoprotegerin, bone sialoprotein, and osterix). This study demonstrates the underlying molecular mechanisms of cytoprotection exerted by actein against TCDD-induced oxidative stress and osteoblast damage.
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Affiliation(s)
- Eun Mi Choi
- Department of Endocrinology & Metabolism, School of Medicine, Kyung Hee University, Seoul, 02447, Republic of Korea
| | - Kwang Sik Suh
- Department of Endocrinology & Metabolism, School of Medicine, Kyung Hee University, Seoul, 02447, Republic of Korea
| | - Woon-Won Jung
- Department of Biomedical Laboratory Science, College of Health Sciences, Cheongju University, Cheongju, Chungbuk, 28503, Republic of Korea
| | - So Young Park
- Department of Medicine, Graduate School, Kyung Hee University, Seoul, 02447, Republic of Korea
| | - Sang Ouk Chin
- Department of Endocrinology & Metabolism, School of Medicine, Kyung Hee University, Seoul, 02447, Republic of Korea
| | - Sang Youl Rhee
- Department of Endocrinology & Metabolism, School of Medicine, Kyung Hee University, Seoul, 02447, Republic of Korea
| | - Youngmi Kim Pak
- Department of Physiology, School of Medicine, Kyung Hee University, Seoul, 02447, Republic of Korea
| | - Suk Chon
- Department of Endocrinology & Metabolism, School of Medicine, Kyung Hee University, Seoul, 02447, Republic of Korea
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Yun C, Weiner JA, Chun DS, Yun J, Cook RW, Schallmo MS, Kannan AS, Mitchell SM, Freshman RD, Park C, Hsu WK, Hsu EL. Mechanistic insight into the effects of Aryl Hydrocarbon Receptor activation on osteogenic differentiation. Bone Rep 2017; 6:51-59. [PMID: 28377982 PMCID: PMC5365310 DOI: 10.1016/j.bonr.2017.02.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 01/18/2017] [Accepted: 02/14/2017] [Indexed: 12/31/2022] Open
Abstract
While inhibition of bone healing and increased rates of pseudarthrosis are known adverse outcomes associated with cigarette smoking, the underlying mechanisms by which this occurs are not well understood. Recent work has implicated the Aryl Hydrocarbon Receptor (Ahr) as one mediator of the anti-osteogenic effects of cigarette smoke (CS), which contains numerous toxic ligands for the Ahr. 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD, dioxin) is a high-affinity Ahr ligand frequently used to evaluate Ahr pathway activation. The purpose of this study was to elucidate the downstream mechanisms of dioxin action on bone regeneration and investigate Ahr antagonism as a potential therapeutic approach to mitigate the effects of dioxin on bone. Markers of osteogenic activity and differentiation were assessed in primary rat bone marrow stromal cells (BMSC) after exposure to dioxin, Ahr antagonists, or antagonist + dioxin. Four Ahr antagonists were evaluated: α-Naphthoflavone (ANF), resveratrol (Res), 3,3′-Diindolylmethane (DIM), and luteolin (Lut). Our results demonstrate that dioxin inhibited ALP activity, migratory capacity, and matrix mineralization, whereas co-treatment with each of the antagonists mitigated these effects. Dioxin also inhibited BMSC chemotaxis, while co-treatment with several antagonists partially rescued this effect. RNA and protein expression studies found that dioxin down-regulated numerous pro-osteogenic targets, whereas co-treatment with Ahr antagonists prevented these dioxin-induced expression changes to varying degrees. Our results suggest that dioxin adversely affects bone regeneration in a myriad of ways, many of which appear to be mediated by the Ahr. Our work suggests that the Ahr should be investigated as a therapeutic target to combat the adverse effects of CS on bone healing. Dioxin, a potent Ahr ligand, inhibits osteogenic differentiation of BMSC. “Nutraceutical” Ahr antagonists found in red wine and broccoli protected against dioxin action. Targets of dioxin action included Collagens, MMPs, Phex, CXCR4/CXCL12 axis. The Ahr may in part mediate the adverse effects of cigarette smoke on osteogenic differentiation and bone healing.
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Affiliation(s)
- Chawon Yun
- Northwestern University Department of Orthopaedic Surgery, Chicago, IL, USA
| | - Joseph A Weiner
- Northwestern University Department of Orthopaedic Surgery, Chicago, IL, USA
| | - Danielle S Chun
- Northwestern University Department of Orthopaedic Surgery, Chicago, IL, USA
| | - Jonghwa Yun
- Northwestern University Department of Orthopaedic Surgery, Chicago, IL, USA
| | - Ralph W Cook
- Northwestern University Department of Orthopaedic Surgery, Chicago, IL, USA
| | - Michael S Schallmo
- Northwestern University Department of Orthopaedic Surgery, Chicago, IL, USA
| | - Abhishek S Kannan
- Northwestern University Department of Orthopaedic Surgery, Chicago, IL, USA
| | - Sean M Mitchell
- Northwestern University Department of Orthopaedic Surgery, Chicago, IL, USA
| | - Ryan D Freshman
- Northwestern University Department of Orthopaedic Surgery, Chicago, IL, USA
| | - Christian Park
- Northwestern University Department of Orthopaedic Surgery, Chicago, IL, USA
| | - Wellington K Hsu
- Northwestern University Department of Orthopaedic Surgery, Chicago, IL, USA
| | - Erin L Hsu
- Northwestern University Department of Orthopaedic Surgery, Chicago, IL, USA
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Herlin M, Öberg M, Ringblom J, Joseph B, Korkalainen M, Viluksela M, Heimeier RA, Håkansson H. Inhibitory effects on osteoblast differentiation in vitro by the polychlorinated biphenyl mixture Aroclor 1254 are mainly associated with the dioxin-like constituents. Toxicol In Vitro 2015; 29:876-83. [DOI: 10.1016/j.tiv.2015.03.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 02/20/2015] [Accepted: 03/01/2015] [Indexed: 11/30/2022]
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13
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Chen YY, Li Q, Pan CS, Yan L, Fan JY, He K, Sun K, Liu YY, Chen QF, Bai Y, Wang CS, He B, Lv AP, Han JY. QiShenYiQi Pills, a compound in Chinese medicine, protects against pressure overload-induced cardiac hypertrophy through a multi-component and multi-target mode. Sci Rep 2015; 5:11802. [PMID: 26136154 PMCID: PMC4488877 DOI: 10.1038/srep11802] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 06/02/2015] [Indexed: 12/31/2022] Open
Abstract
The present study aimed to explore the holistic mechanism for the antihypertrophic effect of a compound in Chinese medicine, QiShenYiQi Pills (QSYQ) and the contributions of its components to the effect in rats with cardiac hypertrophy (CH). After induction of CH by ascending aortic stenosis, rats were treated with QSYQ, each identified active ingredient (astragaloside IV, 3, 4-dihydroxy-phenyl lactic acid or notoginsenoside R1) from its 3 major herb components or dalbergia odorifera, either alone or combinations, for 1 month. QSYQ markedly attenuated CH, as evidenced by echocardiography, morphology and biochemistry. Proteomic analysis and western blot showed that the majority of differentially expressed proteins in the heart of QSYQ-treated rats were associated with energy metabolism or oxidative stress. Each ingredient alone or their combinations exhibited similar effects as QSYQ but to a lesser extent and differently with astragaloside IV and notoginsenoside R1 being more effective for enhancing energy metabolism, 3, 4-dihydroxy-phenyl lactic acid more effective for counteracting oxidative stress while dalbergia odorifera having little effect on the variables evaluated. In conclusion, QSYQ exerts a more potent antihypertrophic effect than any of its ingredients or their combinations, due to the interaction of its active components through a multi-component and multi-target mode.
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Affiliation(s)
- Yuan-Yuan Chen
- 1] Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing, China [2] Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China [3] Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of China, Beijing, China [4] Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of China, Beijing, China
| | - Quan Li
- 1] Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China [2] Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of China, Beijing, China [3] Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of China, Beijing, China
| | - Chun-Shui Pan
- 1] Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China [2] Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of China, Beijing, China [3] Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of China, Beijing, China
| | - Li Yan
- 1] Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China [2] Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of China, Beijing, China [3] Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of China, Beijing, China
| | - Jing-Yu Fan
- 1] Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China [2] Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of China, Beijing, China [3] Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of China, Beijing, China
| | - Ke He
- 1] Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China [2] Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of China, Beijing, China [3] Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of China, Beijing, China
| | - Kai Sun
- 1] Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China [2] Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of China, Beijing, China [3] Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of China, Beijing, China
| | - Yu-Ying Liu
- 1] Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China [2] Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of China, Beijing, China [3] Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of China, Beijing, China
| | - Qing-Fang Chen
- 1] Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing, China [2] Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China [3] Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of China, Beijing, China [4] Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of China, Beijing, China
| | - Yan Bai
- Institute of Vascular Medicine, Peking University Third Hospital and Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptide, Ministry of Health, Beijing, China
| | - Chuan-She Wang
- 1] Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing, China [2] Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China [3] Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of China, Beijing, China [4] Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of China, Beijing, China
| | - Bing He
- The School of Chinese Medicine of Hong Kong Baptist University, Kowloon Tong, Hong Kong, China
| | - Ai-Ping Lv
- The School of Chinese Medicine of Hong Kong Baptist University, Kowloon Tong, Hong Kong, China
| | - Jing-Yan Han
- 1] Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing, China [2] Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China [3] Key Laboratory of Microcirculation, State Administration of Traditional Chinese Medicine of China, Beijing, China [4] Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of China, Beijing, China
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Zhang P, Feng S, Bai H, Zeng P, Chen F, Wu C, Peng Y, Zhang Q, Zhang Q, Ye Q, Xue Q, Xu X, Song E, Song Y. Polychlorinated biphenyl quinone induces endothelial barrier dysregulation by setting the cross talk between VE-cadherin, focal adhesion, and MAPK signaling. Am J Physiol Heart Circ Physiol 2015; 308:H1205-14. [PMID: 25770237 DOI: 10.1152/ajpheart.00005.2015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 03/09/2015] [Indexed: 12/12/2022]
Abstract
Environmental hazardous material polychlorinated biphenyl (PCB) exposure is associated with vascular endothelial dysfunction, which may increase the risk of cardiovascular diseases and cancer metastasis. Our previous studies illustrated the cytotoxic, antiproliferative, and genotoxic effects of a synthetic, quinone-type, highly reactive metabolite of PCB, 2,3,5-trichloro-6-phenyl-[1,4]benzoquinone (PCB29-pQ). Here, we used it as the model compound to investigate its effects on vascular endothelial integrity and permeability. We demonstrated that noncytotoxic doses of PCB29-pQ induced vascular endothelial (VE)-cadherin junction disassembly by increasing the phosphorylation of VE-cadherin at Y658. We also found that focal adhesion assembly was required for PCB29-pQ-induced junction breakdown. Focal adhesion site-associated actin stress fibers may serve as holding points for cytoskeletal tension to regulate the cellular contractility. PCB29-pQ exposure promoted the association of actin stress fibers with paxillin-containing focal adhesion sites and enlarged the size/number of focal adhesions. In addition, PCB29-pQ treatment induced phosphorylation of paxillin at Y118. By using pharmacological inhibition, we further demonstrated that p38 activation was necessary for paxillin phosphorylation, whereas extracellular signal-regulated kinases-1/2 activation regulated VE-cadherin phosphorylation. In conclusion, these results indicated that PCB29-pQ stimulates endothelial hyperpermeability by mediating VE-cadherin disassembly, junction breakdown, and focal adhesion formation. Intervention strategies targeting focal adhesion and MAPK signaling could be used as therapeutic approaches for preventing adverse cardiovascular health effects induced by environmental toxicants such as PCBs.
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Affiliation(s)
- Pu Zhang
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry, Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, China; and Department of Bioengineering, Pennsylvania State University, University Park, Pennsylvania
| | - Shan Feng
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry, Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, China; and
| | - Huiyuan Bai
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry, Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, China; and
| | - Panying Zeng
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry, Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, China; and
| | - Feng Chen
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry, Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, China; and
| | - Chengxiang Wu
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry, Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, China; and
| | - Yi Peng
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry, Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, China; and
| | - Qin Zhang
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry, Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, China; and
| | - Qiuyao Zhang
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry, Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, China; and
| | - Qichao Ye
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry, Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, China; and
| | - Qiang Xue
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry, Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, China; and
| | - Xiaoyu Xu
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry, Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, China; and
| | - Erqun Song
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry, Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, China; and
| | - Yang Song
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry, Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, China; and
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15
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de Jong E, van Beek L, Piersma AH. Comparison of osteoblast and cardiomyocyte differentiation in the embryonic stem cell test for predicting embryotoxicity in vivo. Reprod Toxicol 2014; 48:62-71. [DOI: 10.1016/j.reprotox.2014.03.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 03/19/2014] [Indexed: 01/11/2023]
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16
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Corrales J, Thornton C, White M, Willett KL. Multigenerational effects of benzo[a]pyrene exposure on survival and developmental deformities in zebrafish larvae. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2014; 148:16-26. [PMID: 24440964 PMCID: PMC3940271 DOI: 10.1016/j.aquatox.2013.12.028] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Revised: 12/18/2013] [Accepted: 12/24/2013] [Indexed: 05/06/2023]
Abstract
In the aquatic environment, adverse outcomes from dietary polycyclic aromatic hydrocarbon (PAH) exposure are poorly understood, and multigenerational developmental effects following exposure to PAHs are in need of exploration. Benzo[a]pyrene (BaP), a model PAH, is a recognized carcinogen and endocrine disruptor. Here adult zebrafish (F0) were fed 0, 10, 114, or 1,012 μg BaP/g diet at a feed rate of 1% body weight twice/day for 21 days. Eggs were collected and embryos (F1) were raised to assess mortality and time to hatch at 24, 32, 48, 56, 72, 80, and 96 h post fertilization (hpf) before scoring developmental deformities at 96 hpf. F1 generation fish were raised to produce the F2 generation followed by the F3 and F4 generations. Mortality significantly increased in the higher dose groups of BaP (2.3 and 20 μg BaP/g fish) in the F1 generation while there were no differences in the F2, F3, or F4 generations. In addition, premature hatching was observed among the surviving fish in the higher dose of the F1 generation, but no differences were found in the F2 and F3 generations. While only the adult F0 generation was BaP-treated, this exposure resulted in multigenerational phenotypic impacts on at least two generations (F1 and F2). Body morphology deformities (shape of body, tail, and pectoral fins) were the most severe abnormality observed, and these were most extreme in the F1 generation but still present in the F2 but not F3 generations. Craniofacial structures (length of brain regions, size of optic and otic vesicles, and jaw deformities), although not significantly affected in the F1 generation, emerged as significant deformities in the F2 generation. Future work will attempt to molecularly anchor the persistent multigenerational phenotypic deformities noted in this study caused by BaP exposure.
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Affiliation(s)
- Jone Corrales
- Department of Pharmacology and Environmental Toxicology Research Program, School of Pharmacy, University of Mississippi, University, MS 38677, USA.
| | - Cammi Thornton
- Department of Pharmacology and Environmental Toxicology Research Program, School of Pharmacy, University of Mississippi, University, MS 38677, USA.
| | - Mallory White
- Department of Pharmacology and Environmental Toxicology Research Program, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Kristine L Willett
- Department of Pharmacology and Environmental Toxicology Research Program, School of Pharmacy, University of Mississippi, University, MS 38677, USA.
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17
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Herlin M, Finnilä MAJ, Zioupos P, Aula A, Risteli J, Miettinen HM, Jämsä T, Tuukkanen J, Korkalainen M, Håkansson H, Viluksela M. New insights to the role of aryl hydrocarbon receptor in bone phenotype and in dioxin-induced modulation of bone microarchitecture and material properties. Toxicol Appl Pharmacol 2013; 273:219-26. [PMID: 24035824 DOI: 10.1016/j.taap.2013.09.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Revised: 08/21/2013] [Accepted: 09/03/2013] [Indexed: 12/12/2022]
Abstract
Bone is a target for high affinity aryl hydrocarbon receptor (AHR) ligands, such as dioxins. Although bone morphology, mineral density and strength are sensitive endpoints of dioxin toxicity, less is known about effects on bone microarchitecture and material properties. This study characterizes TCDD-induced modulations of bone tissue, and the role of AHR in dioxin-induced bone toxicity and for normal bone phenotype. Six AHR-knockout (Ahr(-/-)) and wild-type (Ahr(+/+)) mice of both genders were exposed to TCDD weekly for 10 weeks, at a total dose of 200μg/kgbw. Bones were examined with micro-computed tomography, nanoindentation and biomechanical testing. Serum levels of bone remodeling markers were analyzed, and the expression of genes related to osteogenic differentiation was profiled using PCR array. In Ahr(+/+) mice, TCDD-exposure resulted in harder bone matrix, thinner and more porous cortical bone, and a more compact trabecular bone compartment. Bone remodeling markers and altered expression of a number of osteogenesis related genes indicated imbalanced bone remodeling. Untreated Ahr(-/-) mice displayed a slightly modified bone phenotype as compared with untreated Ahr(+/+) mice, while TCDD exposure caused only a few changes in bones of Ahr(-/-) mice. Part of the effects of both TCDD-exposure and AHR-deficiency were gender dependent. In conclusion, exposure of adult mice to TCDD resulted in harder bone matrix, thinner cortical bone, mechanically weaker bones and most notably, increased trabecular bone volume fraction in Ahr(+/+) mice. AHR is involved in bone development of a normal bone phenotype, and is crucial for manifestation of TCDD-induced bone alterations.
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Affiliation(s)
- Maria Herlin
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
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Zhang J, Lanham KA, Heideman W, Peterson RE, Li L. Statistically enhanced spectral counting approach to TCDD cardiac toxicity in the adult zebrafish heart. J Proteome Res 2013; 12:3093-103. [PMID: 23682714 PMCID: PMC3740750 DOI: 10.1021/pr400312u] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) is a persistent environmental pollutant and teratogen that produces cardiac toxicity in the developing zebrafish. Here we adopted a label free quantitative proteomic approach based on normalized spectral abundance factor (NSAF) to investigate the disturbance of the cardiac proteome induced by TCDD in the adult zebrafish heart. The protein expression level changes between heart samples from TCDD-treated and control zebrafish were systematically evaluated by a large scale MudPIT analysis, which incorporated triplicate analyses for both control and TCDD-exposed heart proteomic samples to overcome the data-dependent variation in shotgun proteomic experiments and obtain a statistically significant protein data set with improved quantification confidence. A total of 519 and 443 proteins were identified in hearts collected from control and TCDD-treated zebrafish, respectively, among which 106 proteins showed statistically significant expression changes. After correcting for the experimental variation between replicate analyses by statistical evaluation, 55 proteins exhibited NSAF ratios above 2 and 43 proteins displayed NSAF ratios smaller than 0.5, with statistical significance by t test (p < 0.05). The proteins identified as altered by TCDD encompass a wide range of biological functions including calcium handling, myocardium cell architecture, energy production and metabolism, mitochondrial homeostasis, and stress response. Collectively, our results indicate that TCDD exposure alters the adult zebrafish heart in a way that could result in cardiac hypertrophy and heart failure and suggests a potential mechanism for the diastolic dysfunction observed in TCDD-exposed embryos.
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Affiliation(s)
- Jiang Zhang
- School of Pharmacy, University of Wisconsin - Madison, WI, USA
| | - Kevin A Lanham
- Department of Biomolecular Chemistry, University of Wisconsin - Madison, WI, USA
| | - Warren Heideman
- School of Pharmacy, University of Wisconsin - Madison, WI, USA
| | | | - Lingjun Li
- School of Pharmacy, University of Wisconsin - Madison, WI, USA
- Department of Chemistry, University of Wisconsin - Madison, WI, USA
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Paunescu AC, Dewailly É, Dodin S, Nieboer E, Ayotte P. Dioxin-like compounds and bone quality in Cree women of Eastern James Bay (Canada): a cross-sectional study. Environ Health 2013; 12:54. [PMID: 23816203 PMCID: PMC3704868 DOI: 10.1186/1476-069x-12-54] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Accepted: 06/28/2013] [Indexed: 05/07/2023]
Abstract
BACKGROUND Aboriginal populations living in Canada's northern regions are exposed to a number of persistent organic pollutants through their traditional diet which includes substantial amounts of predator fish species. Exposure to dioxin-like compounds (DLCs) can cause a variety of toxic effects including adverse effects on bone tissue. This descriptive cross-sectional study was conducted to investigate the relationship between plasma concentrations of DLCs and bone quality parameters in Cree women of Eastern James Bay (Canada). METHODS Two hundred and forty-nine Cree women from seven communities in Eastern James Bay (Canada), aged 35 to 74 years old, participated in the study. In order to determine the total DLC concentration in plasma samples of participants, we measured the aryl hydrocarbon receptor-mediated transcriptional activity elicited by plasma sample extracts using a luciferase reporter gene assay. Plasma concentrations of mono-ortho-substituted dioxin-like polychlorinated biphenyls (DL-PCBs) 105, 118 and 156 were measured by gas chromatography-mass spectrometry. Bone quality parameters (speed of sound, m/s; broadband ultrasound attenuation, dB/MHz; stiffness index, %) were assessed by quantitative ultrasound at the right calcaneus with the Achilles InSight system. Several factors known to be associated with osteoporosis were documented by questionnaire. Multiple linear regression models were constructed for the three ultrasound parameters. RESULTS DL-PCBs 105 and 118 concentrations, but not the global DLC concentration, were inversely associated with the stiffness index, even after adjusting for several confounding factors. The stiffness index (log) decreased by -0.22% (p=0.0414) and -0.04% (p=0.0483) with an increase of one μg/L in plasma concentrations of DL-PCB 105 and DL-PCB 118, respectively. Other factors, including age, height, smoking status, menopausal status and the percentage of omega-6 polyunsaturated fatty acids (PUFAs) in erythrocyte membranes were negatively associated with one of the ultrasound parameters, while the percentage of omega-3 PUFAs in these membranes and levels of physical activity and education were positively associated with them. CONCLUSIONS Our results show that an increase in plasma concentrations of DL-PCBs 105 and 118 was negatively associated with stiffness index, a measure of bone quality/strength, in women of this population. In addition to environmental contaminants, future studies should also consider PUFA intake as a factor influencing bone quality.
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Affiliation(s)
- Alexandra-Cristina Paunescu
- Axe santé des populations et pratiques optimales en santé. Centre de recherche du CHU de Québec, 2875, boulevard Laurier, Édifice Delta 2, bureau 600, Québec, QC G1V 2M2, Canada
| | - Éric Dewailly
- Axe santé des populations et pratiques optimales en santé. Centre de recherche du CHU de Québec, 2875, boulevard Laurier, Édifice Delta 2, bureau 600, Québec, QC G1V 2M2, Canada
| | - Sylvie Dodin
- Axe santé des populations et pratiques optimales en santé. Centre de Recherche du CHU de Québec, Hôpital Saint-François-d'Assise, 10, rue de l’Espinay, Québec, QC G1L 3L5, Canada
| | - Evert Nieboer
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4K1, Canada
| | - Pierre Ayotte
- Axe santé des populations et pratiques optimales en santé. Centre de recherche du CHU de Québec, 2875, boulevard Laurier, Édifice Delta 2, bureau 600, Québec, QC G1V 2M2, Canada
- Laboratoire de toxicologie, INSPQ, 945, avenue Wolfe, Québec, QC G1V 5B3, Canada
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Paunescu AC, Ayotte P, Dewailly E, Dodin S. Dioxin-like compounds are not associated with bone strength measured by ultrasonography in Inuit women from Nunavik (Canada): results of a cross-sectional study. Int J Circumpolar Health 2013; 72:20843. [PMID: 23730628 PMCID: PMC3668095 DOI: 10.3402/ijch.v72i0.20843] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 05/01/2013] [Accepted: 05/01/2013] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Bone strength in Inuit people appears lower than that of non-Aboriginals. Inuit are exposed to persistent organic pollutants including dioxin-like compounds (DLCs) through their traditional diet that comprises predatory fish and marine mammal fat. Results from experimental and population studies suggest that some DLCs can alter bone metabolism and increase bone fragility. OBJECTIVE This cross-sectional descriptive study was conducted to examine the relationship between the stiffness index (SI) and plasma concentrations of total DLCs or specific dioxin-like polychlorinated biphenyls (DL-PCBs) in Inuit women of Nunavik (Northern Quebec, Canada). METHODS SI was determined by ultrasonography at the right calcaneus of 194 Inuit women aged 35-72 years who participated to Qanuippitaa? How Are We? Nunavik Inuit Health Survey in 2004. Plasma total DLC levels were quantified by measuring the aryl hydrocarbon receptor-mediated transcriptional activity elicited by plasma sample extracts in a cell-based reporter gene assay. Plasma concentrations of DL-PCBs nos. 105, 118, 156, 157, 167 and 189 were measured by gas chromatography-mass spectrometry. We used multiple linear regression analyses to investigate relations between total DLCs or specific DL-PCBs and SI, taking into consideration several potential confounders. RESULTS Neither total plasma DLCs nor specific DL-PCBs were associated with SI after adjustment for several confounders and covariates. CONCLUSION Our results do not support a relation between exposure to DLCs and bone strength measured by ultrasonography in Inuit women of Nunavik.
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Scornavacca G, Gesuete R, Orsini F, Pastorelli R, Fanelli R, de Simoni MG, Airoldi L. Proteomic analysis of mouse brain cortex identifies metabolic down-regulation as a general feature of ischemic pre-conditioning. J Neurochem 2012; 122:1219-29. [DOI: 10.1111/j.1471-4159.2012.07874.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Koskela A, Viluksela M, Keinänen M, Tuukkanen J, Korkalainen M. Synergistic effects of tributyltin and 2,3,7,8-tetrachlorodibenzo-p-dioxin on differentiating osteoblasts and osteoclasts. Toxicol Appl Pharmacol 2012; 263:210-7. [PMID: 22749964 DOI: 10.1016/j.taap.2012.06.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Revised: 06/14/2012] [Accepted: 06/19/2012] [Indexed: 10/28/2022]
Abstract
The purpose of this study was to examine the effects of the persistent and accumulative environmental pollutants tributyltin (TBT) and 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) individually and in combination on differentiating bone cells. TBT and TCDD are chemically distinct compounds with different mechanisms of toxicity, but they typically have the same sources of exposure and both have been shown to affect bone development at low exposure levels. Bone marrow stem cells were isolated from femurs and tibias of C57BL/6J mice, differentiated in culture into osteoblasts or osteoclasts and exposed to 0.1-10nM TBT, 0.01-1nM TCDD or 10nM TBT+ 1nM TCDD. In osteoblasts, the combined exposure to TBT and TCDD significantly decreased the mRNA expression of alkaline phosphatase and osteocalcin more than TBT or TCDD alone. PCR array showed different gene expression profiles for TBT and TCDD individually, and the combination evoked several additional alterations in gene expression. Expression of aryl hydrocarbon receptor repressor (AHRR) was increased by TCDD as expected, but simultaneous exposure to TBT prevented the increase thus potentially strengthening AHR-mediated effects of TCDD. The number of osteoclasts was reduced by TCDD alone and in combination with TBT, but TBT alone had no effect. However, the total area of resorbed bone was remarkably lower after combined exposure than after TBT or TCDD alone. In conclusion, very low concentrations of TBT and TCDD have synergistic deleterious effects on bone formation and additive effects on bone resorption.
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Affiliation(s)
- Antti Koskela
- University of Oulu, Department of Anatomy and Cell Biology, Oulu, Finland.
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23
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Kung MH, Yukata K, O'Keefe RJ, Zuscik MJ. Aryl hydrocarbon receptor-mediated impairment of chondrogenesis and fracture healing by cigarette smoke and benzo(a)pyrene. J Cell Physiol 2012; 227:1062-70. [PMID: 21567390 DOI: 10.1002/jcp.22819] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The clinical literature strongly suggests that bone healing in cigarette smokers is impaired. Since cigarette smoke (CS) contains numerous polycyclic aromatic hydrocarbons (PAHs), and since dioxins impair bone formation in vivo via the Aryl Hydrocarbon Receptor (AHR), we investigated the impact of PAH/AHR signaling on chondrogenesis and on healing in a mouse tibial fracture model. We established that CS activates AHR signaling in fractures by up-regulating the AHR target gene cytochrome p4501A1 (Cyp1A1). For in vitro studies, we employed the mouse limb bud micromass chondrogenesis model. After confirming that chondrocytes express AHR during differentiation, we treated cells with a prototypical PAH found in CS, benzo(a)pyrene (BaP), or cigarette smoke extract (CSE). Both BaP and CSE strongly inhibited chondrogenesis in mesenchymal cells generated from E11 limb buds, with BaP also accelerating chondrocyte hypertrophy in cultures generated from E12 limb buds. Detection of DNA adducts in the BaP-treated cultures suggests that the distinct phenotypic effects of BaP may be due to the formation of reactive metabolites. Blockade of AHR signaling with the AHR antagonist MNF reverses the effects of BaP, but not CSE, suggesting that CSE inhibition of chondrogenesis is AHR-independent. Correlating with these results, tibial fracture calluses from BaP-treated mice were smaller and contained less mineralized tissue than vehicle controls. Overall, BaP is identified as a potent inhibitor of chondrogenesis in vitro with correlated effects on fracture healing similar to those of CS itself, suggesting a basis for PAHs as key compounds in the influence of CS on fracture repair.
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Affiliation(s)
- Ming H Kung
- Department of Orthopaedics, Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, New York 14642, USA.
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24
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Brunelli L, Campagna R, Airoldi L, Cauli O, Llansola M, Boix J, Felipo V, Pastorelli R. Exploratory investigation on nitro- and phospho-proteome cerebellum changes in hyperammonemia and hepatic encephalopathy rat models. Metab Brain Dis 2012; 27:37-49. [PMID: 22083566 DOI: 10.1007/s11011-011-9268-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Accepted: 10/25/2011] [Indexed: 01/15/2023]
Abstract
Hepatic encephalopathy (HE) is a neurological disease associated with hepatic dysfunction. Current knowledge suggests that hyperammonemia, related to liver failure, is a main factor contributing to the cerebral alterations in HE and that hyperammonemia might impair signal transduction associated with post-translational modification of proteins such as tyrosine-nitration and phosphorylation. However, the molecular bases of the HE remain unclear and very little is known about the occurrence of post-translational modification on in vivo proteins. In this exploratory study we look for evidence of post-translation modifications of proteins in the cerebellum of experimental HE rat models using a proteomic approach. For the first time we showed that hyperammonemia without liver failure (HA rats) and experimental HE with liver failure due to portacaval shunt (PCS rats) lead to a reduced protein nitration in rat cerebellum, where the undernitrated proteins were involved in energy metabolism and cytoskeleton remodelling. Moreover we showed that tyrosine nitration loss of these proteins was not necessarily associated to a change in their phosphorylation state as result of the disease. Interestingly the rat cerebellum phosphoproteome was mainly perturbed in PCS rats, whereas HA rats did not shown appreciable changes in their phosphoprotein profile. Since the protein nitration level decreased similarly in the cerebellum of both HA and PCS rats, this implies that the two disease models share common effects but also present some differential signalling effects in the cerebellum of the same animals. This study highlights the interest for studying the concerted action of multiple signalling pathways in HE development.
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Affiliation(s)
- Laura Brunelli
- Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri, Via La Masa 19, 20156 Milano, Italy
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25
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Nardo G, Pozzi S, Pignataro M, Lauranzano E, Spano G, Garbelli S, Mantovani S, Marinou K, Papetti L, Monteforte M, Torri V, Paris L, Bazzoni G, Lunetta C, Corbo M, Mora G, Bendotti C, Bonetto V. Amyotrophic lateral sclerosis multiprotein biomarkers in peripheral blood mononuclear cells. PLoS One 2011; 6:e25545. [PMID: 21998667 PMCID: PMC3187793 DOI: 10.1371/journal.pone.0025545] [Citation(s) in RCA: 114] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Accepted: 09/05/2011] [Indexed: 12/13/2022] Open
Abstract
Background Amyotrophic lateral sclerosis (ALS) is a fatal progressive motor neuron disease, for which there are still no diagnostic/prognostic test and therapy. Specific molecular biomarkers are urgently needed to facilitate clinical studies and speed up the development of effective treatments. Methodology/Principal Findings We used a two-dimensional difference in gel electrophoresis approach to identify in easily accessible clinical samples, peripheral blood mononuclear cells (PBMC), a panel of protein biomarkers that are closely associated with ALS. Validations and a longitudinal study were performed by immunoassays on a selected number of proteins. The same proteins were also measured in PBMC and spinal cord of a G93A SOD1 transgenic rat model. We identified combinations of protein biomarkers that can distinguish, with high discriminatory power, ALS patients from healthy controls (98%), and from patients with neurological disorders that may resemble ALS (91%), between two levels of disease severity (90%), and a number of translational biomarkers, that link responses between human and animal model. We demonstrated that TDP-43, cyclophilin A and ERp57 associate with disease progression in a longitudinal study. Moreover, the protein profile changes detected in peripheral blood mononuclear cells of ALS patients are suggestive of possible intracellular pathogenic mechanisms such as endoplasmic reticulum stress, nitrative stress, disturbances in redox regulation and RNA processing. Conclusions/Significance Our results indicate that PBMC multiprotein biomarkers could contribute to determine amyotrophic lateral sclerosis diagnosis, differential diagnosis, disease severity and progression, and may help to elucidate pathogenic mechanisms.
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Affiliation(s)
- Giovanni Nardo
- Dulbecco Telethon Institute, Milano, Italy
- Department of Molecular Biochemistry and Pharmacology, Mario Negri Institute for Pharmacological Research, Milano, Italy
| | - Silvia Pozzi
- Dulbecco Telethon Institute, Milano, Italy
- Department of Molecular Biochemistry and Pharmacology, Mario Negri Institute for Pharmacological Research, Milano, Italy
| | - Mauro Pignataro
- Dulbecco Telethon Institute, Milano, Italy
- Department of Molecular Biochemistry and Pharmacology, Mario Negri Institute for Pharmacological Research, Milano, Italy
| | - Eliana Lauranzano
- Dulbecco Telethon Institute, Milano, Italy
- Department of Molecular Biochemistry and Pharmacology, Mario Negri Institute for Pharmacological Research, Milano, Italy
| | - Giorgia Spano
- Dulbecco Telethon Institute, Milano, Italy
- Department of Neuroscience, Mario Negri Institute for Pharmacological Research, Milano, Italy
| | - Silvia Garbelli
- Istituto Di Ricovero e Cura a Carattere Scientifico (IRCCS) Fondazione Salvatore Maugeri, Pavia, Italy
- National Institute for Occupational Safety and Prevention (ISPESL), Research Center at the IRCCS Fondazione Salvatore Maugeri, Pavia, Italy
| | - Stefania Mantovani
- Istituto Di Ricovero e Cura a Carattere Scientifico (IRCCS) Fondazione Salvatore Maugeri, Pavia, Italy
- National Institute for Occupational Safety and Prevention (ISPESL), Research Center at the IRCCS Fondazione Salvatore Maugeri, Pavia, Italy
| | | | | | - Marta Monteforte
- Department of Oncology, Mario Negri Institute for Pharmacological Research, Milano, Italy
| | - Valter Torri
- Department of Oncology, Mario Negri Institute for Pharmacological Research, Milano, Italy
| | - Luca Paris
- Department of Molecular Biochemistry and Pharmacology, Mario Negri Institute for Pharmacological Research, Milano, Italy
| | - Gianfranco Bazzoni
- Department of Molecular Biochemistry and Pharmacology, Mario Negri Institute for Pharmacological Research, Milano, Italy
| | - Christian Lunetta
- NEuroMuscular Omnicentre (NEMO), Niguarda Ca’ Granda Hospital, Milano, Italy
| | - Massimo Corbo
- NEuroMuscular Omnicentre (NEMO), Niguarda Ca’ Granda Hospital, Milano, Italy
| | | | - Caterina Bendotti
- Department of Neuroscience, Mario Negri Institute for Pharmacological Research, Milano, Italy
| | - Valentina Bonetto
- Dulbecco Telethon Institute, Milano, Italy
- Department of Molecular Biochemistry and Pharmacology, Mario Negri Institute for Pharmacological Research, Milano, Italy
- * E-mail:
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26
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Campagna R, Brunelli L, Airoldi L, Fanelli R, Hakansson H, Heimeier RA, De Boever P, Boix J, Llansola M, Felipo V, Pastorelli R. Cerebellum Proteomics Addressing the Cognitive Deficit of Rats Perinatally Exposed to the Food-Relevant Polychlorinated Biphenyl 138. Toxicol Sci 2011; 123:170-9. [DOI: 10.1093/toxsci/kfr156] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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27
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Mazzoletti M, Bortolin F, Brunelli L, Pastorelli R, Di Giandomenico S, Erba E, Ubezio P, Broggini M. Combination of PI3K/mTOR Inhibitors: Antitumor Activity and Molecular Correlates. Cancer Res 2011; 71:4573-84. [DOI: 10.1158/0008-5472.can-10-4322] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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28
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Hutt KJ, Shi Z, Petroff BK, Albertini DF. The environmental toxicant 2,3,7,8-tetrachlorodibenzo-p-dioxin disturbs the establishment and maintenance of cell polarity in preimplantation rat embryos. Biol Reprod 2010; 82:914-20. [PMID: 20089886 DOI: 10.1095/biolreprod.109.081109] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Maternal exposure to the environmental toxicant 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) induces a variety of defects in compaction-stage embryos, including monopolar spindle formation, errors in chromosome segregation, and fragmentation resulting from aberrant cytokinesis. In this study, we investigated the possibility that a failure in centrosome duplication, separation, or positioning within blastomeres might underlie the observed effects of TCDD on early embryos. The subcellular localization of the centrosomal marker TUBG1 was analyzed in preimplantation embryos collected from female rats exposed to either chronic (50 ng kg(-1) wk(-1) for 3 wk) or acute (50 ng/kg or 1 microg/kg at proestrus) doses of TCDD. In treated embryos, interphase TUBG1 foci were more abundant and cortically displaced when compared to those in controls. At prophase, some blastomeres exhibited a single large perinuclear TUBG1 aggregate, suggesting a failure in centrosome duplication or separation. Furthermore, the presence of monopolar spindles at metaphase was confirmed by the localization of TUBG1 to the single spindle pole. Therefore, the misregulation of centrosome number and localization, as indicated by TUBG1 staining, may contribute to errors in chromosome segregation and cytokinesis in embryos following maternal TCDD exposure.
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Affiliation(s)
- Karla J Hutt
- The Center for Reproductive Sciences, Department of Molecular and Integrative Physiology, and Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas 66103, USA
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