1
|
Amaral-Silva L, Tazawa H, Bícego KC, Burggren WW. Metabolic and Hematological Responses to Endotoxin-Induced Inflammation in Chicks Experiencing Embryonic 2,3,7,8-Tetrachlorodibenzodioxin Exposure. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2020; 39:2208-2220. [PMID: 32725906 DOI: 10.1002/etc.4832] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 06/10/2020] [Accepted: 07/27/2020] [Indexed: 06/11/2023]
Abstract
Dioxin exposure during bird embryonic development disrupts immunity as well as mechanisms involved in energy metabolism, potentially affecting negatively acute-phase responses to pathogens. Thus, we hypothesized that embryonic exposure to 2,3,7,8-tetrachlorodibenzodioxin (TCDD) changes the metabolism and blood physiology of domestic chicks, affecting their physiological competence for responding to immune challenges. To test this hypothesis, we injected doses of 0, 1.5, and 3 ng TCDD/egg (based on survival experiments) on embryonic day 4 and then measured O2 consumption and CO2 production for metabolic rate, ventilation, and body temperature (TB ) in 5-d-old chicks. Then, chicks were injected with lipopolysaccharide (LPS, endotoxin) or saline prior to repeating the physiological measurements. A second chick group exposed to identical TCDD and LPS treatments had blood partial pressure of oxygen, partial pressure of carbon dioxide, pH, bicarbonate concentration, lactate concentration, osmolality, hemoglobin concentration, red blood cell concentration, and hematocrit, as well as TB , analyzed at 1 and 5 h after LPS injection. Metabolism in chicks embryonically exposed to 1.5 and 3 ng TCDD/egg was up to 37% higher, whereas body mass of chicks exposed to 3 ng TCDD/egg was approximately 6% lower. Chicks embryonically exposed to 3 ng TCDD/egg challenged with LPS showed a relative persistent hypometabolism accompanied by elimination of the normal hematological and osmotic responses to LPS. We conclude that embryonic exposure to TCDD affects posthatching metabolism as well as impairs metabolic, hematological, and osmotic responses to LPS. Environ Toxicol Chem 2020;39:2208-2220. © 2020 SETAC.
Collapse
Affiliation(s)
- Lara Amaral-Silva
- Department of Animal Morphology and Physiology, College of Agricultural and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, Brazil
- Department of Biological Sciences, University of North Texas, Denton, Texas, USA
| | - Hiroshi Tazawa
- Department of Biological Sciences, University of North Texas, Denton, Texas, USA
| | - Kênia Cardoso Bícego
- Department of Animal Morphology and Physiology, College of Agricultural and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, Brazil
| | - Warren W Burggren
- Department of Biological Sciences, University of North Texas, Denton, Texas, USA
| |
Collapse
|
2
|
Fujisawa N, Tohyama C, Yoshioka W. Cardiotoxicity induced by 2,3,7,8-tetrachlorodibenzo-p-dioxin exposure through lactation in mice. J Toxicol Sci 2019; 44:505-513. [PMID: 31270306 DOI: 10.2131/jts.44.505] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Dioxins are a group of structurally related chemicals that persist in the environment. Exposure to 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), the most toxic congener, is a suspected risk factor for cardiac diseases in humans. TCDD induces signs of cardiotoxicity in various animals. Mouse models of TCDD exposure suggest cardiotoxicity phenotypes develop differently depending on the timing and time-course of exposure. In order to clarify and characterize the TCDD-induced cardiotoxicity in the developing period, we utilized mouse pups exposed to TCDD. One day after delivery, groups of nursing C57BL/6J dams were orally administered TCDD at a dose of 0 (Control), 20 (TCDD-20), or 80 μg/kg (TCDD-80) body weight (BW). On postnatal days (PNDs) 7 and 21, pups' hearts were examined by histological and gene expression analyses. The TCDD-80 group was found to have a left ventricular remodeling on PND 7, and to develop heart hypertrophy on PND 21. It was accompanied by fibrosis and increased expression of associated genes, such as those for atrial natriuretic peptide (ANP), β-myosin heavy chain (β-MHC), and endothelin-1 (ET-1). These results revealed that TCDD directly induces cardiotoxicity in the postnatal period represented by progressive hypertrophy in which ANP, β-MHC, and ET-1 have potentials to mediate the cardiac hypertrophy and heart failure.
Collapse
Affiliation(s)
- Nozomi Fujisawa
- Laboratory of Environmental Health Sciences, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo
| | - Chiharu Tohyama
- Laboratory of Environmental Health Sciences, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo.,Faculty of Medicine, University of Tsukuba
| | - Wataru Yoshioka
- Laboratory of Environmental Health Sciences, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo.,Department of Public Health & Environmental Medicine, The Jikei University School of Medicine
| |
Collapse
|
3
|
Regulation of Human Cytochrome P4501A1 (hCYP1A1): A Plausible Target for Chemoprevention? BIOMED RESEARCH INTERNATIONAL 2016; 2016:5341081. [PMID: 28105425 PMCID: PMC5220472 DOI: 10.1155/2016/5341081] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 11/09/2016] [Accepted: 11/13/2016] [Indexed: 12/13/2022]
Abstract
Human cytochrome P450 1A1 (hCYP1A1) has been an object of study due to its role in precarcinogen metabolism; for this reason it is relevant to know more in depth the mechanisms that rule out its expression and activity, which make this enzyme a target for the development of novel chemiopreventive agents. The aim of this work is to review the origin, regulation, and structural and functional characteristics of CYP1A1 letting us understand its role in the bioactivation of precarcinogen and the consequences of its modulation in other physiological processes, as well as guide us in the study of this important protein.
Collapse
|
4
|
Gostomska-Pampuch K, Ostrowska A, Kuropka P, Dobrzyński M, Ziółkowski P, Kowalczyk A, Łukaszewicz E, Gamian A, Całkosiński I. Protective effects of levamisole, acetylsalicylic acid, and α-tocopherol against dioxin toxicity measured as the expression of AhR and COX-2 in a chicken embryo model. Histochem Cell Biol 2016; 147:523-536. [PMID: 27942866 PMCID: PMC5359382 DOI: 10.1007/s00418-016-1528-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/29/2016] [Indexed: 11/28/2022]
Abstract
Polychlorinated dibenzo-p-dioxins and dibenzofurans (dioxins) are classed as persistent organic pollutants and have adverse effects on multiple functions within the body. Dioxins are known carcinogens, immunotoxins, and teratogens. Dioxins are transformed in vivo, and interactions between the products and the aryl hydrocarbon receptor (AhR) lead to the formation of proinflammatory and toxic metabolites. The aim of this study was to determine whether α-tocopherol (vitamin E), acetylsalicylic acid (ASA), and levamisole can decrease the amount of damage caused by dioxins. Fertile Hubbard Flex commercial line chicken eggs were injected with solutions containing 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) or containing TCDD and the test compounds. The chicken embryos and organs were analyzed after 7 and 13 days. The levels at which AhR and cyclooxygenase-2 (COX-2) proteins (which are induced during inflammation) were expressed were evaluated by performing immunohistochemical analyses on embryos treated with TCDD alone or with TCDD and the test compounds. TCDD caused developmental disorders and increased AhR and COX-2 expression in the chicken embryo tissues. Vitamin E, levamisole, ASA, and ASA plus vitamin E inhibited AhR and COX-2 expression in embryos after 7 days and decreased AhR and COX-2 expression in embryos after 13 days. ASA, levamisole, and ASA plus vitamin E weakened the immune response and prevented multiple organ changes. Vitamin E was not fully protective against developmental changes in the embryos.
Collapse
Affiliation(s)
- Kinga Gostomska-Pampuch
- Department of Immunology of Infectious Diseases, Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114, Wrocław, Poland.
| | - Alicja Ostrowska
- Laboratory of Neurotoxicology and Environmental Diagnostics, Wroclaw Medical University, Bartla 5, 51-618, Wrocław, Poland
| | - Piotr Kuropka
- Department of Animal Physiology and Biostructure, Wroclaw University of Environmental and Life Sciences, Norwida 31, 50-375, Wrocław, Poland
| | - Maciej Dobrzyński
- Department of Conservative Dentistry and Pedodontics, Wroclaw Medical University, Krakowska 26, 50-425, Wrocław, Poland
| | - Piotr Ziółkowski
- Department of Pathomorphology, Wroclaw Medical University, Marcinkowskiego 1, 50-368, Wrocław, Poland
| | - Artur Kowalczyk
- Institute of Animal Breeding, Wroclaw University of Environmental and Life Sciences, Chełmońskiego 38c, 51-630, Wrocław, Poland
| | - Ewa Łukaszewicz
- Institute of Animal Breeding, Wroclaw University of Environmental and Life Sciences, Chełmońskiego 38c, 51-630, Wrocław, Poland
| | - Andrzej Gamian
- Department of Immunology of Infectious Diseases, Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114, Wrocław, Poland.,Department of Medical Biochemistry, Wroclaw Medical University, Chałubińskiego 10, 50-368, Wrocław, Poland.,Wroclaw Research Centre EIT+, Wrocław, Poland
| | - Ireneusz Całkosiński
- Laboratory of Neurotoxicology and Environmental Diagnostics, Wroclaw Medical University, Bartla 5, 51-618, Wrocław, Poland
| |
Collapse
|
5
|
Jiang Q, Wang C, Xue C, Xue L, Wang M, Li C, Deng Z, Wang Q. Changes in the levels of l-carnitine, acetyl-l-carnitine and propionyl-l-carnitine are involved in perfluorooctanoic acid induced developmental cardiotoxicity in chicken embryo. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2016; 48:116-124. [PMID: 27771504 DOI: 10.1016/j.etap.2016.10.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Revised: 10/16/2016] [Accepted: 10/17/2016] [Indexed: 06/06/2023]
Abstract
Perfluorooctanoic acid (PFOA), a persistent organic pollutant, is associated with developmental toxicity. This study investigated the mechanism of PFOA-induced developmental cardiotoxicity in chicken embryo, focusing on the interactions between developmental exposure to PFOA and the levels of l-carnitine (LC), acetyl-l-carnitine (ALC) and propionyl-l-carnitine (PLC) in the heart. To evaluate the developmental cardiotoxicity, fertile chicken eggs were exposed to 0.1, 0.5, 1, 2 or 5mg/kg PFOA via air cell injection. Furthermore, exposure to 2mg/kg PFOA, with or without 100mg/kg LC were applied to investigate the effects of LC supplement. The results of functional and morphological assessments confirmed PFOA induced developmental cardiotoxicity in chicken embryo, which could be alleviated by co-exposure to LC. LC-MS/MS results also revealed remarkable decrease in LC, ALC and PLC levels in embryonic day six (ED6) chicken embryo hearts as well as LC level in embryonic day fifteen (ED15) chicken embryo hearts following developmental exposure to 2mg/kg PFOA. Meanwhile, co-exposure to 100mg/kg LC significantly elevated the levels of LC, ALC and PLC in chicken embryo hearts. Significantly elevated expression level of carnitine acetyltransferase (CRAT) in PFOA-exposed ED6 chicken embryo hearts was observed via western blotting, while LC co-exposure counteracted such changes. In conclusion, changes in the levels of LC, ALC and PLC in early embryonic stages are associated with PFOA induced developmental cardiotoxicity in chicken embryos.
Collapse
Affiliation(s)
- Qixiao Jiang
- Qingdao University Medical College, 308 Ningxia Road, Qingdao, Shandong 266021, China.
| | - Chunbo Wang
- Qingdao University Medical College, 308 Ningxia Road, Qingdao, Shandong 266021, China.
| | - Chan Xue
- Qingdao University Medical College, 308 Ningxia Road, Qingdao, Shandong 266021, China
| | - Lingfang Xue
- Qingdao University Medical College, 308 Ningxia Road, Qingdao, Shandong 266021, China
| | - Meiting Wang
- Qingdao University Medical College, 308 Ningxia Road, Qingdao, Shandong 266021, China
| | - Changhao Li
- Qingdao University Medical College, 308 Ningxia Road, Qingdao, Shandong 266021, China
| | - Ziwen Deng
- Qingdao University Medical College, 308 Ningxia Road, Qingdao, Shandong 266021, China
| | - Qian Wang
- Qingdao University Medical College, 308 Ningxia Road, Qingdao, Shandong 266021, China
| |
Collapse
|
6
|
Nijoukubo D, Tanaka Y, Okuno Y, Yin G, Kitazawa T, Peterson RE, Kubota A, Teraoka H. Protective effect of prostacyclin against pre-cardiac edema caused by 2,3,7,8-tetrachlorodibenzo-p-dioxin and a thromboxane receptor agonist in developing zebrafish. CHEMOSPHERE 2016; 156:111-117. [PMID: 27174823 DOI: 10.1016/j.chemosphere.2016.04.107] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Revised: 04/22/2016] [Accepted: 04/25/2016] [Indexed: 06/05/2023]
Abstract
The role of prostaglandin pathways has been suggested in some toxicological responses to dioxins. Cyclooxygenase type 2b (COX2b), thromboxane synthase, and the thromboxane receptor (TP) pathway have been implicated in mediating 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD)-induced pre-cardiac edema in developing zebrafish at 55 h post fertilization (hpf). Pre-cardiac edema refers to edema located in a small cavity between the heart and body wall of zebrafish eleutheroembryos. In the present study, we assessed the role of prostacyclin, which counteracts some biological effects of thromboxane, in TCDD-induced pre-cardiac edema. Pre-cardiac edema induced by TCDD exposure (0.5 and 1 ppb) beginning at 24 hpf was markedly inhibited by exposure to beraprost (5 and 10 μM), a prostacyclin receptor (IP) agonist, beginning at 33 hpf. The preventive effect of beraprost was reduced by exposure to CAY10441 (10 μM), an IP antagonist starting at 33 hpf. Knockdowns of the IP receptor (IP-KD) with two different morpholinos caused edema by themselves and enhanced pre-cardiac edema caused by the low concentration of TCDD (0.5 ppb). On the other hand, short exposure beginning at 48 hpf to U46619 (7.5-30 μM), a thromboxane receptor agonist caused pre-cardiac edema, which was inhibited by exposure beginning at 48 hpf to both ICI-192,605 (24 μM), a TP antagonist, and beraprost. Expression of prostacyclin synthase was increased from fertilization, plateaued by 48 hpf, and was maintained until at least 96 hpf. Overall, the results demonstrate a preventive effect of prostacyclin on TCDD-induced pre-cardiac edema in developing zebrafish.
Collapse
Affiliation(s)
- Daisuke Nijoukubo
- School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Japan
| | - Yasuaki Tanaka
- School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Japan
| | - Yuki Okuno
- School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Japan
| | - Guojun Yin
- School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Japan; Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, China
| | - Takio Kitazawa
- School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Japan
| | | | - Akira Kubota
- Diagnostic Center for Animal Health and Food Safety, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan
| | - Hiroki Teraoka
- School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Japan.
| |
Collapse
|
7
|
Affiliation(s)
- Gisela H Degen
- Leibniz Research Centre for Working Environment and Human Factors, TU Dortmund, IfADo - Ardeystr. 67, 44139, Dortmund, Germany.
| |
Collapse
|