101
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Verbrugghe P, Verhoeven J, Coudyzer W, Verbeken E, Dubruel P, Mendes E, Stam F, Meuris B, Herijgers P. An electro-responsive hydrogel for intravascular applications: an in vitro and in vivo evaluation. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2015; 26:264. [PMID: 26474577 PMCID: PMC4608972 DOI: 10.1007/s10856-015-5598-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Accepted: 10/03/2015] [Indexed: 06/05/2023]
Abstract
There is a growing interest in using hydrogels for biomedical applications, because of more favourable characteristics. Some of these hydrogels can be activated by using particular stimuli, for example electrical fields. These stimuli can change the hydrogel shape in a predefined way. It could make them capable of adaptation to patient-specific anatomy even post-implantation. This is the first paper aiming to describe in vivo studies of an electro-responsive, Pluronic F127 based hydrogel, for intravascular applications. Pluronic methacrylic acid hydrogel (PF127/MANa) was in vitro tested for its haemolytic and cytotoxic effects. Minimal invasive implantation in the carotid artery of sheep was used to evaluate its medium-term biological effects, through biochemical, macroscopic, radiographic, and microscopic evaluation. Indirect and direct testing of the material gave no indication of the haemolytic effects of the material. Determination of fibroblast viability after 24 h of incubation in an extract of the hydrogel showed no cytotoxic effects. Occlusion was obtained within 1 h following in vivo implantation. Evaluation at time of autopsy showed a persistent occlusion with no systemic effects, no signs of embolization and mild effects on the arterial wall. An important proof-of-concept was obtained showing biocompatibility and effectiveness of a pluronic based electro-responsive hydrogel for obtaining an arterial occlusion with limited biological impact. So the selected pluronic-methacrylic acid based hydrogel can be used as an endovascular occlusion device. More importantly it is the first step in further development of electro-active hydrogels for a broad range of intra-vascular applications (e.g. system to prevent endoleakage in aortic aneurysm treatment, intra-vascular drug delivery).
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Affiliation(s)
- Peter Verbrugghe
- Department of Cardiac Surgery, UZ Leuven, Herestraat 49, 3000, Louvain, Belgium.
| | - Jelle Verhoeven
- Department of Cardiac Surgery, UZ Leuven, Herestraat 49, 3000, Louvain, Belgium
| | | | - Eric Verbeken
- Department of Pathology, UZ Leuven, Louvain, Belgium
| | - Peter Dubruel
- Chemistry Department, Ghent University, Ghent, Belgium
| | - Eduardo Mendes
- Chemical Engineering Department, Delft University, Delft, The Netherlands
| | - Frank Stam
- Tyndall National Institute, University College Cork, Cork, Ireland
| | - Bart Meuris
- Department of Cardiac Surgery, UZ Leuven, Herestraat 49, 3000, Louvain, Belgium
| | - Paul Herijgers
- Department of Cardiac Surgery, UZ Leuven, Herestraat 49, 3000, Louvain, Belgium
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102
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Gao JJ, Peng RH, Zhu B, Wang B, Wang LJ, Xu J, Sun M, Yao QH. Phytoremediation potential of Arabidopsis with reference to acrylamide and microarray analysis of acrylamide-response genes. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2015; 120:360-8. [PMID: 26112177 DOI: 10.1016/j.ecoenv.2015.05.047] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Revised: 05/27/2015] [Accepted: 05/29/2015] [Indexed: 05/23/2023]
Abstract
Acrylamide (ACR) is a widely used industrial chemical. However, it is a dangerous compound because it showed neurotoxic effects in humans and act as reproductive toxicant and carcinogen in many animal species. In the environment, acrylamide has high soil mobility and may travel via groundwater. Phytoremediation is an effective method to remove the environmental pollutants, but the mechanism of plant response to acrylamide remains unknown. With the purpose of assessing remediation potentials of plants for acrylamide, we have examined acrylamide uptake by the model plant Arabidopsis grown on contaminated substrates with high performance liquid chromatography (HPLC) analysis. The result revealed that acrylamide could be absorbed and degraded by Arabidopsis. Further microarray analysis showed that 527 transcripts were up-regulated within 2-days under acrylamide exposure condition. We have found many potential acrylamide-induced genes playing a major role in plant metabolism and phytoremediation.
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Affiliation(s)
- Jian-Jie Gao
- Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Road, Shanghai 201106, China
| | - Ri-He Peng
- Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Road, Shanghai 201106, China
| | - Bo Zhu
- Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Road, Shanghai 201106, China
| | - Bo Wang
- Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Road, Shanghai 201106, China
| | - Li-Juan Wang
- Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Road, Shanghai 201106, China
| | - Jing Xu
- Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Road, Shanghai 201106, China
| | - Miao Sun
- Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Road, Shanghai 201106, China
| | - Quan-Hong Yao
- Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, 2901 Beidi Road, Shanghai 201106, China.
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103
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ALKarim S, ElAssouli S, Ali S, Ayuob N, ElAssouli Z. Effects of low dose acrylamide on the rat reproductive organs structure, fertility and gene integrity. ASIAN PACIFIC JOURNAL OF REPRODUCTION 2015. [DOI: 10.1016/j.apjr.2015.05.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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104
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Hariri E, Abboud MI, Demirdjian S, Korfali S, Mroueh M, Taleb RI. Carcinogenic and neurotoxic risks of acrylamide and heavy metals from potato and corn chips consumed by the Lebanese population. J Food Compost Anal 2015. [DOI: 10.1016/j.jfca.2015.03.009] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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105
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Bajpai SK, Swarnkar MP, Ahuja S. On-Demand Release of Urea From a Cellulosic Hydrogel Using a Sprinkler Based Irrigation (SBI) Model. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2015. [DOI: 10.1080/10601325.2015.1067020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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106
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Ghorbel I, Maktouf S, Kallel C, Ellouze Chaabouni S, Boudawara T, Zeghal N. Disruption of erythrocyte antioxidant defense system, hematological parameters, induction of pro-inflammatory cytokines and DNA damage in liver of co-exposed rats to aluminium and acrylamide. Chem Biol Interact 2015; 236:31-40. [DOI: 10.1016/j.cbi.2015.04.020] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 04/16/2015] [Accepted: 04/22/2015] [Indexed: 11/28/2022]
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107
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Lee CS, Chong MF, Robinson J, Binner E. Optimisation of extraction and sludge dewatering efficiencies of bio-flocculants extracted from Abelmoschus esculentus (okra). JOURNAL OF ENVIRONMENTAL MANAGEMENT 2015; 157:320-325. [PMID: 25929197 DOI: 10.1016/j.jenvman.2015.04.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2014] [Revised: 04/14/2015] [Accepted: 04/16/2015] [Indexed: 06/04/2023]
Abstract
The production of natural biopolymers as flocculants for water treatment is highly desirable due to their inherent low toxicity and low environmental footprint. In this study, bio-flocculants were extracted from Hibiscus/Abelmoschus esculentus (okra) by using a water extraction method, and the extract yield and its performance in sludge dewatering were evaluated. Single factor experimental design was employed to obtain the optimum conditions for extraction temperature (25-90 °C), time (0.25-5 h), solvent loading (0.5-5 w/w) and agitation speed (0-225 rpm). Results showed that extraction yield was affected non-linearly by all experimental variables, whilst the sludge dewatering ability was only influenced by the temperature of the extraction process. The optimum extraction conditions were obtained at 70 °C, 2 h, solvent loading of 2.5 w/w and agitation at 200 rpm. Under the optimal conditions, the extract yield was 2.38%, which is comparable to the extraction of other polysaccharides (0.69-3.66%). The bio-flocculants displayed >98% removal of suspended solids and 68% water recovery during sludge dewatering, and were shown to be comparable with commercial polyacrylamide flocculants. This work shows that bio-flocculants could offer a feasible alternative to synthetic flocculants for water treatment and sludge dewatering applications, and can be extracted using only water as a solvent, minimising the environmental footprint of the extraction process.
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Affiliation(s)
- Chai Siah Lee
- Centre of Excellence for Green Technologies, Department of Chemical and Environmental Engineering, Faculty of Engineering, The University of Nottingham Malaysia Campus, 43500 Semenyih, Selangor, Malaysia; Industrial Microwave Processing, Faculty of Engineering, The University of Nottingham, Nottingham NG7 2RD, UK.
| | - Mei Fong Chong
- Centre of Excellence for Green Technologies, Department of Chemical and Environmental Engineering, Faculty of Engineering, The University of Nottingham Malaysia Campus, 43500 Semenyih, Selangor, Malaysia.
| | - John Robinson
- Industrial Microwave Processing, Faculty of Engineering, The University of Nottingham, Nottingham NG7 2RD, UK.
| | - Eleanor Binner
- Industrial Microwave Processing, Faculty of Engineering, The University of Nottingham, Nottingham NG7 2RD, UK.
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108
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Liu Z, Song G, Zou C, Liu G, Wu W, Yuan T, Liu X. Acrylamide induces mitochondrial dysfunction and apoptosis in BV-2 microglial cells. Free Radic Biol Med 2015; 84:42-53. [PMID: 25817051 DOI: 10.1016/j.freeradbiomed.2015.03.013] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 02/24/2015] [Accepted: 03/13/2015] [Indexed: 10/23/2022]
Abstract
Acrylamide (ACR), a potent neurotoxin, can be produced during food processing at high temperature. This study examined the redox-dependent apoptotic and inflammatory responses of ACR in an immortalized mouse microglia cell line BV2. The exposure of BV2 cells to ACR reduced cell viability and induced apoptosis in a concentration-dependent manner. ACR impaired cell energy metabolism by decreasing mitochondrial respiration, anaerobic glycolysis, and lowering expression of the complex I, III, and IV subunits. Mitochondrial dysfunction was associated with a decrease of the mitochondrial membrane potential and the Bcl-2/Bax ratio, thus resulting in activation of the mitochondrion-driven apoptotic signaling. This was accompanied by (a) the modulation of redox-sensitive signaling, suppressed Akt activation and increased JNK and p38 activation, and (b) increased expression of NFκB and downstream inducible nitric oxide synthase (iNOS) and nitric oxide generation, thus supporting indirectly a proinflammatory effect of ACR. Nrf2 expression was also increased but not its translocation to the nucleus. Expectedly, the electrophilic attack of ACR on GSH resulted in substantial loss of GSH with a minor GSSG formation. These changes in the cell׳s redox status elicited by ACR resulted in increased H2O2 formation. The changes in mitochondrial functionality and complex subunit expression caused by ACR were reversed by N-acetyl-L-cysteine (NAC). Likewise, NAC restored the cell׳s redox status by increasing GSH levels with concomitant attenuation of H2O2 generation; these effects resulted in decreased apoptotic cell death and inflammatory responses. ACR-mediated mitochondrial dysfunction along with a more oxidized redox status seems to be critical events leading to activation of the intrinsic apoptotic pathway and inflammatory responses.
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Affiliation(s)
- Zhigang Liu
- College of Food Science and Engineering, Northwest A&F University, Yangling, China; Pharmacology & Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA, USA
| | - Ge Song
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Chen Zou
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Gongguan Liu
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Wanqiang Wu
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Tian Yuan
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Xuebo Liu
- College of Food Science and Engineering, Northwest A&F University, Yangling, China.
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109
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Duan X, Wang QC, Chen KL, Zhu CC, Liu J, Sun SC. Acrylamide toxic effects on mouse oocyte quality and fertility in vivo. Sci Rep 2015; 5:11562. [PMID: 26108138 PMCID: PMC4479821 DOI: 10.1038/srep11562] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Accepted: 05/15/2015] [Indexed: 11/09/2022] Open
Abstract
Acrylamide is an industrial chemical that has attracted considerable attention due to its presumed carcinogenic, neurotoxic, and cytotoxic effects. In this study we investigated possible acrylamide reproductive toxic effects in female mice. Mice were fed an acrylamide-containing diet for 6 weeks. Our results showed the following effects of an acrylamide-containing diet. (1) Ovary weights were reduced in acrylamide-treated mice and oocyte developmental competence was also reduced, as shown by reduced GVBD and polar body extrusion rates. (2) Acrylamide feeding resulted in aberrant oocyte cytoskeletons, as shown by an increased abnormal spindle rate and confirmed by disrupted γ-tubulin and p-MAPK localization. (3) Acrylamide feeding resulted in oxidative stress and oocyte early stage apoptosis, as shown by increased ROS levels and p-MAPK expression. (4) Fluorescence intensity analysis showed that DNA methylation levels were reduced in acrylamide-treated oocytes and histone methylation levels were also altered, as H3K9me2, H3K9me3, H3K4me2, and H3K27me3 levels were reduced after acrylamide treatment. (5) After acrylamide feeding, the litter sizes of acrylamide-treated mice were significantly smaller compared to thus of control mice. Thus, our results indicated that acrylamide might affect oocyte quality through its effects on cytoskeletal integrity, ROS generation, apoptosis induction, and epigenetic modifications.
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Affiliation(s)
- Xing Duan
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Qiao-Chu Wang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Kun-Lin Chen
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Cheng-Cheng Zhu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Jun Liu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Shao-Chen Sun
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
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110
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111
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Esmaeelpanah E, Rahmatkhah A, Poormahmood N, Razavi BM, Vahdati Hasani F, Hosseinzadeh H. Protective Effect of Green Tea Aqueous Extract on Acrylamide Induced Neurotoxicity. Jundishapur J Nat Pharm Prod 2015. [DOI: 10.17795/jjnpp-18406] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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112
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Al-Serwi RH, Ghoneim FM. The impact of vitamin E against acrylamide induced toxicity on skeletal muscles of adult male albino rat tongue: Light and electron microscopic study. J Microsc Ultrastruct 2015; 3:137-147. [PMID: 30023192 PMCID: PMC6014282 DOI: 10.1016/j.jmau.2015.03.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 02/25/2015] [Accepted: 03/08/2015] [Indexed: 01/21/2023] Open
Abstract
Acrylamide, one of the major environmental public health problems, results from its increased accumulation in the process of cooking food materials. This study aimed to demonstrate the light and electron microscopic structural effects of acrylamide on the skeletal muscle fibers of adult male albino rat tongue and to investigate the possible protective effect of vitamin E co-administration. Thirty adult male albino Sprague-Dawley rats were divided into 3 groups, each group included 10 rats. Group I (control), group II which was subdivided into two equal subgroups: subgroup IIa: included 5 rats that received acrylamide orally once daily for 20 days. Subgroup IIb: included 5 rats that received acrylamide orally once daily for 40 days. Group III was also subdivided into two equal subgroups: subgroup IIIa: included 5 rats that received acrylamide and vitamin E orally once daily for 20 days. Subgroup IIIb: included 5 rats that received acrylamide and vitamin E orally once daily for 40 days. At the end of the experiment the tongue was dissected out for histological and electron microscopic studies, another muscle sample was homogenized and processed for biochemical estimation of malondialdehyde (MDA) and total antioxidant capacity (TAC). Light microscopic study of tongue skeletal muscles in acrylamide exposed animals revealed abnormal wavy course and splitting of the muscle fibers with fatty infiltration in between. Moreover, pyknosis and remnants of nuclei were detected. EM revealed marked aggregation of mitochondria of different size and shape with giant cells formation, and partial loss of myofilaments. There were statistically significant increase in MDA and decrease in TAC indicating oxidative stress in acrylamide administrated groups (group II) than the control group which increased by prolonged duration (subgroup IIb versus subgroup IIa, p < 0.0001). This oxidative stress could explain the histological changes in tongue muscles of acrylamide exposed rats. Co-administration of vitamin E with acrylamide ameliorated most of the above mentioned histological changes in the animals used and signs of improvement that became better with prolonged administration of it (subgroup IIIb versus subgroup IIIa, p < 0.0001) were detected. It could be concluded that, chronic exposure to acrylamide might lead to skeletal muscle damage in rat tongue which becomes worth with prolonged duration of exposure. Acrylamide induced oxidative stress is the implicated mechanism of such histological changes. This toxic effect of acrylamide could be minimized when vitamin E is given concomitantly with it by its antioxidant effect.
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Affiliation(s)
- Rasha H Al-Serwi
- Oral Biology Department, Faculty of Dentistry, Mansoura University, Egypt
| | - Fatma M Ghoneim
- Histology and Cell Biology Department, Faculty of Medicine, Mansoura University, Egypt
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113
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Raju J, Roberts J, Taylor M, Patry D, Chomyshyn E, Caldwell D, Cooke G, Mehta R. Toxicological effects of short-term dietary acrylamide exposure in male F344 rats. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2015; 39:85-92. [PMID: 25473820 DOI: 10.1016/j.etap.2014.11.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 11/16/2014] [Indexed: 06/04/2023]
Abstract
We recently reported that acrylamide, a known rodent and probable human carcinogen, does not increase the risk of azoxymethane (AOM)-induced rat colon precancerous lesions when administered through the diet. Here, we present toxicological data from non-AOM-injected rats. Briefly, male F344 rats were randomized into four dietary groups and received experimental diets based on AIN-93G formulation and containing acrylamide at 0 (control), 5, 10 or 50mg/kg diet (wt/wt) ad libitum for 10 weeks, after which they were killed and their blood collected for hematological and biochemical markers. Acrylamide at the higher doses (10 and 50mg/kg diet) significantly lowered (p<0.05) serum total high density lipoprotein and total testosterone and increased serum lipase in comparison to the control. Blood hematocrit values and lymphocyte counts were significantly lower (p<0.05) in the high dose acrylamide (50mg/kg diet) group compared to control, with a concomitant decrease in hemoglobin level, mean corpuscular volume and mean corpuscular hemoglobin. These results provide additional hazard characterization data and strengthen the notion that at high doses, acrylamide may involve systemic toxicity potentiating tumorigenesis in experimental animals. Further studies are required to understand the health effects of food-borne acrylamide, especially at the lower exposures typified by human diets.
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Affiliation(s)
- Jayadev Raju
- Regulatory Toxicology Research Division, Bureau of Chemical Safety, Food Directorate, Health Products and Food Branch Health Canada, Ottawa, Ontario, Canada.
| | - Jennifer Roberts
- Regulatory Toxicology Research Division, Bureau of Chemical Safety, Food Directorate, Health Products and Food Branch Health Canada, Ottawa, Ontario, Canada
| | - Marnie Taylor
- Regulatory Toxicology Research Division, Bureau of Chemical Safety, Food Directorate, Health Products and Food Branch Health Canada, Ottawa, Ontario, Canada
| | - Dominique Patry
- Scientific Services Division, Bureau of Chemical Safety, Food Directorate, Health Products and Food Branch Health Canada, Ottawa, Ontario, Canada
| | - Emily Chomyshyn
- Scientific Services Division, Bureau of Chemical Safety, Food Directorate, Health Products and Food Branch Health Canada, Ottawa, Ontario, Canada
| | - Don Caldwell
- Scientific Services Division, Bureau of Chemical Safety, Food Directorate, Health Products and Food Branch Health Canada, Ottawa, Ontario, Canada
| | - Gerard Cooke
- Regulatory Toxicology Research Division, Bureau of Chemical Safety, Food Directorate, Health Products and Food Branch Health Canada, Ottawa, Ontario, Canada
| | - Rekha Mehta
- Regulatory Toxicology Research Division, Bureau of Chemical Safety, Food Directorate, Health Products and Food Branch Health Canada, Ottawa, Ontario, Canada
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114
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Reddy M A, Srivastava A. In aquo ppm level detection of acrylamide through S-to-N acyl transfer mediated activation of pro-sensors. Chem Commun (Camb) 2015; 51:11072-5. [DOI: 10.1039/c5cc02721g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Water-soluble pro-sensors for acryl compounds including acrylamide (AM) were developed.
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Affiliation(s)
- Amarendar Reddy M
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal
- Bhopal
- India
| | - Aasheesh Srivastava
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal
- Bhopal
- India
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115
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Lin CY, Lin LY, Chen YC, Wen LL, Chien KL, Sung FC, Chen PC, Su TC. Association between measurements of thyroid function and the acrylamide metabolite N-Acetyl-S-(propionamide)-cysteine in adolescents and young adults. ENVIRONMENTAL RESEARCH 2015; 136:246-52. [PMID: 25460643 DOI: 10.1016/j.envres.2014.08.043] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 08/21/2014] [Accepted: 08/29/2014] [Indexed: 05/21/2023]
Abstract
Acrylamide is present in mainstream cigarette smoke and in some foods prepared at high temperatures. Animal studies have shown that acrylamide exposure alters thyroid function; however, it is not known if this also occurs in humans. The study examined the association between the urinary levels of the acrylamide metabolite and serum thyroid measures in adolescents and young adults. We recruited 793 subjects (mean age, 21.3 years; range, 12-30 years) from a population-based sample of Taiwanese adolescents and young adults to determine if the urinary levels of the acrylamide metabolite N-acetyl-S-(propionamide)-cysteine (AAMA) and the 6 serum thyroid measures are associated. The mean (SD) AAMA were 76.54 (76.42) µg/L. Linear regression analyzes showed a 1-unit increase in natural log AAMA was significantly associated with a decrease in serum free thyroxine (T4) (ng/dL) (β=-0.041, SE=0.013, p=0.001) after controlling for covariates. Subpopulation analyzes showed AAMA and free T4 were significantly associated with females, age 20-30 years, non-current smokers, and non-alcohol consumers. In conclusion, higher urinary AAMA concentrations were associated with decreased levels of free T4 in this cohort. Further studies are warranted to determine if there is a causal relationship between acrylamide exposure and thyroid function.
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Affiliation(s)
- Chien-Yu Lin
- Department of Internal Medicine, En Chu Kong Hospital, New Taipei City 237, Taiwan; School of Medicine, Fu Jen Catholic University, New Taipei City 242, Taiwan
| | - Lian-Yu Lin
- Department of Internal Medicine and Cardiovascular Center, National Taiwan University Hospital, Taipei 100, Taiwan
| | - Yu-Chuan Chen
- Institute of Occupational Medicine and Industrial Hygiene, College of Public Health, National Taiwan University, Taipei 100, Taiwan
| | - Li-Li Wen
- Department of Clinical Laboratory, En Chu Kong Hospital, New Taipei City 237, Taiwan
| | - Kuo-Liong Chien
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei 10002, Taiwan
| | - Fung-Chang Sung
- Institute of Environmental Health, College of Public Health, China Medical University, Taichung 404, Taiwan
| | - Pau-Chung Chen
- Institute of Occupational Medicine and Industrial Hygiene, College of Public Health, National Taiwan University, Taipei 100, Taiwan; Department of Public Health, College of Public Health, National Taiwan University, Taipei 10002, Taiwan; Department of Environmental and Occupational Medicine, National Taiwan University College of Medicine and National Taiwan University Hospital, Taipei 10002, Taiwan.
| | - Ta-Chen Su
- Department of Internal Medicine and Cardiovascular Center, National Taiwan University Hospital, Taipei 100, Taiwan; Institute of Occupational Medicine and Industrial Hygiene, College of Public Health, National Taiwan University, Taipei 100, Taiwan.
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116
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Maronpot RR, Thoolen RJMM, Hansen B. Two-year carcinogenicity study of acrylamide in Wistar Han rats with in utero exposure. ACTA ACUST UNITED AC 2014; 67:189-95. [PMID: 25553597 DOI: 10.1016/j.etp.2014.11.009] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Revised: 10/30/2014] [Accepted: 11/19/2014] [Indexed: 11/19/2022]
Abstract
Acrylamide is an important chemical with widespread industrial and other uses in addition to generalized population exposure from certain cooked foods. Previous rat studies to assess the carcinogenic potential of acrylamide have been carried out exclusively in the Fischer 344 rat with identification of a number of tumors amongst which mesotheliomas of the tunica vaginalis is an important tumor endpoint in the classification of acrylamide as a 'probably human carcinogen. In a rat carcinogenicity study to determine the human relevance of mesotheliomas Wistar Han rats were exposed to 0, 0.5, 1.5, or 3.0mg acrylamide/kg body weight/day in drinking water starting at gestation day 6. At the end of two years, mammary gland fibroadenomas in females and thyroid follicular cell tumors in both sexes were the only tumors increased in acrylamide treated rats. These tumor endpoints have rat-specific modes of action suggesting less likelihood of human cancer risk than previously estimated. This study demonstrates that tunica vaginalis mesotheliomas are strain specific and not likely of genotoxic origin.
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Affiliation(s)
- R R Maronpot
- Experimental Pathology Laboratories, Inc., Research Triangle Park, NC, United States.
| | | | - B Hansen
- LPT Laboratory of Pharmacology & Toxicology, Hamburg, Germany
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117
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Modified Lipoproteins by Acrylamide Showed More Atherogenic Properties and Exposure of Acrylamide Induces Acute Hyperlipidemia and Fatty Liver Changes in Zebrafish. Cardiovasc Toxicol 2014; 15:300-8. [DOI: 10.1007/s12012-014-9294-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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118
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Lee CS, Chong MF, Robinson J, Binner E. A Review on Development and Application of Plant-Based Bioflocculants and Grafted Bioflocculants. Ind Eng Chem Res 2014. [DOI: 10.1021/ie5034045] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chai Siah Lee
- Department
of Chemical and Environmental
Engineering, Faculty of Engineering, University of Nottingham Malaysia Campus, 43500 Semenyih, Selangor, Malaysia
- Department
of Chemical and Environmental Engineering, University of Nottingham, Nottingham NG7 2RD, U.K
| | - Mei Fong Chong
- Department
of Chemical and Environmental
Engineering, Faculty of Engineering, University of Nottingham Malaysia Campus, 43500 Semenyih, Selangor, Malaysia
| | - John Robinson
- Department
of Chemical and Environmental Engineering, University of Nottingham, Nottingham NG7 2RD, U.K
| | - Eleanor Binner
- Department
of Chemical and Environmental Engineering, University of Nottingham, Nottingham NG7 2RD, U.K
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Mehri S, Karami HV, Hassani FV, Hosseinzadeh H. Chrysin reduced acrylamide-induced neurotoxicity in both in vitro and in vivo assessments. IRANIAN BIOMEDICAL JOURNAL 2014; 18:101-6. [PMID: 24518551 DOI: 10.6091/ibj.1291.2013] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
BACKGROUND Acrylamide (ACR) is a well-known industrial toxic chemical that produces neurotoxicity, which is characterized by progressive central and peripheral neuronal degeneration. Chrysin is a natural, biologically active flavonoid compound, which is commonly found in many plants. The antioxidant and neuroprotective properties of chrysin have been demonstrated. METHODS In this study, the possible effect of chrysin on ACR-induced toxicity was evaluated in both in vitro and in vivo experiments. PC12 cells were used as a suitable in vitro model. Cells were exposed to chrysin (0.5-5 µM) for 12 and 24 h, and then ACR in IC50 concentration was added to the cells. Finally, cell viability was determined using (4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium assay. For in vivo assay, Wistar rats were treated with ACR (50 mg/kg i.p. for 11 days) alone or in combination with chrysin (12.5, 25, and 50 mg/kg). At the end of treatment, behavioral index was evaluated. RESULTS ACR decreased cell viability and pre-treatment with chrysin (0.5-5 µM) significantly decreased ACR-induced cytotoxicity in the time- and dose-dependent manner. In Wistar rats, exposure to ACR significantly induced severe gait abnormalities, but treatment with chrysin (50 mg/kg) reduced ACR-induced neurotoxicity in animals. CONCLUSION In the current study, chrysin exhibited neuroprotective effect on PC12 cells as an in vitro model and also on Wistar rats.
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Affiliation(s)
- Soghra Mehri
- Pharmaceutical Research Center, Dept. of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hamed Veis Karami
- Dept. of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Faezeh Vahdati Hassani
- Dept. of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hossein Hosseinzadeh
- Pharmaceutical Research Center, Dept. of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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Lee JH, Lee KJ, Ahn R, Kang HS. Urinary concentrations of acrylamide (AA) and N-acetyl-S-(2-carbamoylethyl)-cysteine (AAMA) and associations with demographic factors in the South Korean population. Int J Hyg Environ Health 2014; 217:751-7. [DOI: 10.1016/j.ijheh.2014.03.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 03/15/2014] [Accepted: 03/16/2014] [Indexed: 01/24/2023]
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121
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Walters B, Hariharan V, Huang H. Dietary levels of acrylamide affect rat cardiomyocyte properties. Food Chem Toxicol 2014; 71:68-73. [DOI: 10.1016/j.fct.2014.05.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 05/06/2014] [Accepted: 05/28/2014] [Indexed: 01/07/2023]
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Mehri S, Meshki MA, Hosseinzadeh H. Linalool as a neuroprotective agent against acrylamide-induced neurotoxicity in Wistar rats. Drug Chem Toxicol 2014; 38:162-6. [DOI: 10.3109/01480545.2014.919585] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Nixon BJ, Katen AL, Stanger SJ, Schjenken JE, Nixon B, Roman SD. Mouse spermatocytes express CYP2E1 and respond to acrylamide exposure. PLoS One 2014; 9:e94904. [PMID: 24788432 PMCID: PMC4008485 DOI: 10.1371/journal.pone.0094904] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Accepted: 03/20/2014] [Indexed: 01/08/2023] Open
Abstract
Metabolism of xenobiotics by cytochrome P450s (encoded by the CYP genes) often leads to bio-activation, producing reactive metabolites that interfere with cellular processes and cause DNA damage. In the testes, DNA damage induced by xenobiotics has been associated with impaired spermatogenesis and adverse effects on reproductive health. We previously reported that chronic exposure to the reproductive toxicant, acrylamide, produced high levels of DNA damage in spermatocytes of Swiss mice. CYP2E1 metabolises acrylamide to glycidamide, which, unlike acrylamide, readily forms adducts with DNA. Thus, to investigate the mechanisms of acrylamide toxicity in mouse male germ cells, we examined the expression of the CYP, CYP2E1, which metabolises acrylamide. Using Q-PCR and immunohistochemistry, we establish that CYP2E1 is expressed in germ cells, in particular in spermatocytes. Additionally, CYP2E1 gene expression was upregulated in these cells following in vitro acrylamide exposure (1 µM, 18 h). Spermatocytes were isolated and treated with 1 µM acrylamide or 0.5 µM glycidamide for 18 hours and the presence of DNA-adducts was investigated using the comet assay, modified to detect DNA-adducts. Both compounds produced significant levels of DNA damage in spermatocytes, with a greater response observed following glycidamide exposure. A modified comet assay indicated that direct adduction of DNA by glycidamide was a major source of DNA damage. Oxidative stress played a small role in eliciting this damage, as a relatively modest effect was found in a comet assay modified to detect oxidative adducts following glycidamide exposure, and glutathione levels remained unchanged following treatment with either compound. Our results indicate that the male germ line has the capacity to respond to xenobiotic exposure by inducing detoxifying enzymes, and the DNA damage elicited by acrylamide in male germ cells is likely due to the formation of glycidamide adducts.
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Affiliation(s)
- Belinda J. Nixon
- Reproductive Science Group, School of Environmental and Life Sciences, University of Newcastle, Callaghan, New South Wales, Australia
| | - Aimee L. Katen
- Reproductive Science Group, School of Environmental and Life Sciences, University of Newcastle, Callaghan, New South Wales, Australia
| | - Simone J. Stanger
- Reproductive Science Group, School of Environmental and Life Sciences, University of Newcastle, Callaghan, New South Wales, Australia
| | - John E. Schjenken
- Reproductive Science Group, School of Environmental and Life Sciences, University of Newcastle, Callaghan, New South Wales, Australia
| | - Brett Nixon
- Reproductive Science Group, School of Environmental and Life Sciences, University of Newcastle, Callaghan, New South Wales, Australia
- Australian Research Council Centre of Excellence in Biotechnology and Development, School of Environmental and Life Sciences, University of Newcastle, Callaghan, New South Wales, Australia
| | - Shaun D. Roman
- Reproductive Science Group, School of Environmental and Life Sciences, University of Newcastle, Callaghan, New South Wales, Australia
- Australian Research Council Centre of Excellence in Biotechnology and Development, School of Environmental and Life Sciences, University of Newcastle, Callaghan, New South Wales, Australia
- * E-mail:
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Xu Y, Cui B, Ran R, Liu Y, Chen H, Kai G, Shi J. Risk assessment, formation, and mitigation of dietary acrylamide: current status and future prospects. Food Chem Toxicol 2014; 69:1-12. [PMID: 24713263 DOI: 10.1016/j.fct.2014.03.037] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Revised: 03/23/2014] [Accepted: 03/28/2014] [Indexed: 10/25/2022]
Abstract
Acrylamide (AA) was firstly detected in food in 2002, and since then, studies on AA analysis, occurrence, formation, toxicity, risk assessment and mitigation have been extensively carried out, which have greatly advanced understanding of this particular biohazard at both academic and industrial levels. There is considerable variation in the levels of AA in different foods and different brands of the same food; therefore, so far, a general upper limit for AA in food is not available. In addition, the link of dietary AA to human cancer is still under debate, although AA has been known as a potential cause of various toxic effects including carcinogenic effects in experimental animals. Furthermore, the oxidized metabolite of AA, glycidamide (GA), is more toxic than AA. Both AA and GA can form adducts with protein, DNA, and hemoglobin, and some of those adducts can serve as biomarkers for AA exposure; their potential roles in the linking of AA to human cancer, reproductive defects or other diseases, however, are unclear. This review addresses the state-of-the-art understanding of AA, focusing on risk assessment, mechanism of formation and strategies of mitigation in foods. The potential application of omics to AA risk assessment is also discussed.
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Affiliation(s)
- Yi Xu
- National Center for Molecular Characterization of Genetically Modified Organisms, School of Life Science and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China; College of Life and Environmental Sciences, Shanghai Normal University, 100 Guilin Road, Xuhui District, Shanghai 200234, PR China
| | - Bo Cui
- National Center for Molecular Characterization of Genetically Modified Organisms, School of Life Science and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China; College of Life Science, Sichuan Agricultural University, 46 Xinkang Road, Yucheng District, Ya'an City, Sichuan Province 625014, PR China
| | - Ran Ran
- National Center for Molecular Characterization of Genetically Modified Organisms, School of Life Science and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China
| | - Ying Liu
- National Center for Molecular Characterization of Genetically Modified Organisms, School of Life Science and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China
| | - Huaping Chen
- College of Life Science, Sichuan Agricultural University, 46 Xinkang Road, Yucheng District, Ya'an City, Sichuan Province 625014, PR China
| | - Guoyin Kai
- College of Life and Environmental Sciences, Shanghai Normal University, 100 Guilin Road, Xuhui District, Shanghai 200234, PR China.
| | - Jianxin Shi
- National Center for Molecular Characterization of Genetically Modified Organisms, School of Life Science and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, PR China.
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Duan Y, Zhang L, Li S, Yang Y, Xing J, Li W, Wang X, Zhou Y. Polyacrylamide hydrogel pulmonary embolism--A fatal consequence of an illegal cosmetic vaginal tightening procedure: A case report. Forensic Sci Int 2014; 238:e6-e10. [PMID: 24656776 DOI: 10.1016/j.forsciint.2014.02.021] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2013] [Revised: 02/14/2014] [Accepted: 02/18/2014] [Indexed: 12/15/2022]
Abstract
Vaginal tightening is a kind of esthetic surgery aimed at enhancing sexual satisfaction during intercourse. Although the injective vaginal tightening procedure is informal, there are already some reports of its application. But pulmonary embolism is a really rare therapeutic complication of this procedure. We report a case of death due to the non-thrombotic pulmonary embolism as a consequence of illegal cosmetic vaginal-tightening procedure using polyacrylamide hydrogel. A 34-year-old woman was hospitalized with paroxysmal abdominal cramps and diarrhea as initial symptoms, while she concealed the genital cosmetic surgery history. Respiratory distress presented only 1.5h before she died. The result of autopsy revealed the cause of death as pulmonary embolism due to the hydrogel which was injected into her vaginal wall. The emboli were confirmed as polyacrylamide hydrogel by Alcian-blue stain and the Fourier transform infrared scanning. It is suggested that pulmonary embolism should not be discarded in the expertise of deaths following cosmetic implant surgeries. It broadens our understanding about death associated with esthetic genital procedures and informs clinicians and medical examiners of the potential death of this type. And detailed investigations of previous medical and surgical history will always play a critical role in the certification of cause of death.
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Affiliation(s)
- Yijie Duan
- Department of Forensic Medicine, Huazhong University of Science and Technology, Tongji Medical College, No. 13 Hangkong Road, Hankou, Wuhan, 430030, PR China.
| | - Lin Zhang
- Department of Forensic Medicine, Huazhong University of Science and Technology, Tongji Medical College, No. 13 Hangkong Road, Hankou, Wuhan, 430030, PR China.
| | - Shangxun Li
- Department of Public Security of Hubei Province, No.181 Xiongchu Avenue, Wuhan, 430070, PR China.
| | - Yi Yang
- Department of Forensic Medicine, Huazhong University of Science and Technology, Tongji Medical College, No. 13 Hangkong Road, Hankou, Wuhan, 430030, PR China.
| | - Jingjun Xing
- Department of Forensic Medicine, Huazhong University of Science and Technology, Tongji Medical College, No. 13 Hangkong Road, Hankou, Wuhan, 430030, PR China.
| | - Wenhe Li
- Department of Forensic Medicine, Huazhong University of Science and Technology, Tongji Medical College, No. 13 Hangkong Road, Hankou, Wuhan, 430030, PR China.
| | - Xinmei Wang
- Central Hospital of Zibo, No. 54 Gongqingtuan West Road, Zibo, 255036, PR China.
| | - Yiwu Zhou
- Department of Forensic Medicine, Huazhong University of Science and Technology, Tongji Medical College, No. 13 Hangkong Road, Hankou, Wuhan, 430030, PR China.
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Motamedshariaty VS, Amel Farzad S, Nassiri-Asl M, Hosseinzadeh H. Effects of rutin on acrylamide-induced neurotoxicity. ACTA ACUST UNITED AC 2014; 22:27. [PMID: 24524427 PMCID: PMC3927829 DOI: 10.1186/2008-2231-22-27] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Accepted: 11/06/2013] [Indexed: 02/06/2023]
Abstract
Background Rutin is an important flavonoid that is consumed in the daily diet. The cytoprotective effects of rutin, including antioxidative, and neuroprotective have been shown in several studies. Neurotoxic effects of acrylamide (ACR) have been established in humans and animals. In this study, the protective effects of rutin in prevention and treatment of neural toxicity of ACR were studied. Results Rutin significantly reduced cell death induced by ACR (5.46 mM) in time- and dose-dependent manners. Rutin treatment decreased the ACR-induced cytotoxicity significantly in comparison to control (P <0.01, P < 0.001). Rutin (100 and 200 mg/kg) could prevent decrease of body weight in rats. In combination treatments with rutin (50, 100 and 200 mg/kg), vitamin E (200 mg/kg) and ACR, gait abnormalities significantly decreased in a dose-dependent manner (P < 0.01 and P < 0.001). The level of malondialdehyde significantly decreased in the brain tissue of rats in both preventive and therapeutic groups that received rutin (100 and 200 mg/kg). Conclusion It seems that rutin could be effective in reducing neurotoxicity and the neuroprotective effect of it might be mediated via antioxidant activity.
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Affiliation(s)
| | | | | | - Hossein Hosseinzadeh
- Pharmacodynamics and Toxicological Department, Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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Hogervorst JGF, de Bruijn-Geraets D, Schouten LJ, van Engeland M, de Kok TMCM, Goldbohm RA, van den Brandt PA, Weijenberg MP. Dietary acrylamide intake and the risk of colorectal cancer with specific mutations in KRAS and APC. Carcinogenesis 2014; 35:1032-8. [PMID: 24398672 DOI: 10.1093/carcin/bgu002] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Acrylamide, a probable human carcinogen, is present in heat-treated carbohydrate-rich foods. Epidemiological studies have not shown a clear association between acrylamide intake and colorectal cancer (CRC) risk. This may be due to the molecular heterogeneity in colorectal tumors, which was not taken into consideration before. Since the acrylamide metabolite glycidamide induces specific DNA mutations in rodents, we investigated whether acrylamide is associated with CRC risk characterized by mutations in Kirsten-ras (KRAS) and adenomatous polyposis coli (APC); key genes in colorectal carcinogenesis. This case-cohort analysis, within the Netherlands Cohort Study on diet and cancer, was based on 7.3 years of follow-up. Acrylamide intake was assessed with a food frequency questionnaire. Mutation analysis of codons 1286-1520 in exon 15 in APC and codons 12 and 13 in exon 1 in KRAS was performed on tumor tissue of 733 cases. Hazard ratios (HR) were calculated using Cox proportional hazards analysis. Among men, acrylamide intake was statistically significantly associated with an increased risk of particularly tumors with an activating KRAS mutation {HR fourth versus first quartile: 2.12 [95% confidence interval (CI): 1.16-3.87], P trend: 0.01}. Among women, acrylamide intake was statistically significantly associated with a decreased risk of particularly tumors with a truncating APC mutation (fourth versus first quartile: 0.47 (95% CI: 0.23-0.94), P trend: 0.02), but only in the highest quartile of intake. This is the first study to show that acrylamide might be associated with CRC with specific somatic mutations, differentially in men and women. More research is needed to corroborate or refute these findings.
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128
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Lin CY, Lee HL, Chen YC, Lien GW, Lin LY, Wen LL, Liao CC, Chien KL, Sung FC, Chen PC, Su TC. Positive association between urinary levels of 8-hydroxydeoxyguanosine and the acrylamide metabolite N-acetyl-S-(propionamide)-cysteine in adolescents and young adults. JOURNAL OF HAZARDOUS MATERIALS 2013; 261:372-377. [PMID: 23959257 DOI: 10.1016/j.jhazmat.2013.06.069] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Revised: 06/25/2013] [Accepted: 06/28/2013] [Indexed: 06/02/2023]
Abstract
Acrylamide is present in mainstream cigarette smoke and in some foods prepared at high temperatures. Animal studies have shown that acrylamide exposure increases oxidative stress; however, it is not known if this also occurs in humans. We recruited 800 subjects (mean age, 21.3 years, range, 12-30 years) from a population-based sample of Taiwanese adolescents and young adults to determine if urinary levels of the acrylamide metabolite N-acetyl-S-(propionamide)-cysteine (AAMA) and the oxidative stress product 8-hydroxydeoxyguanosine (8-OHdG) are associated. The mean (SD) AAMA and 8-OHdG were 76.54 (76.42)μg/L and 3.48 (2.37)μg/L, respectively. In linear regression analyses, a 1-unit increase in natural log AAMA was significantly associated with an increase in natural log 8-OHdG (μg/g creatinine) (β=0.044, SE=0.019, P=0.020) after controlling for covariates. Subpopulation analyses showed AAMA and 8-OHdG were significantly associated with males, adolescents, non-current smokers, without alcohol consumption, subjects, body mass index ≥ 24, and homeostasis model assessment of insulin resistance score ≥ 0.9. In conclusion, higher urinary AAMA concentrations were associated with increased levels of urinary 8-OHdG in this cohort. Further studies are warranted to determine if there is a causal relationship between acrylamide exposure and oxidative stress.
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Affiliation(s)
- Chien-Yu Lin
- Department of Internal Medicine, En Chu Kong Hospital, New Taipei City 237, Taiwan; School of Medicine, Fu Jen Catholic University, New Taipei City 242, Taiwan
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Larguinho M, Costa PM, Sousa G, Costa MH, Diniz MS, Baptista PV. Histopathological findings onCarassius auratushepatopancreas upon exposure to acrylamide: correlation with genotoxicity and metabolic alterations. J Appl Toxicol 2013; 34:1293-302. [DOI: 10.1002/jat.2936] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 08/22/2013] [Accepted: 08/22/2013] [Indexed: 01/19/2023]
Affiliation(s)
- Miguel Larguinho
- CIGMH, Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia; Universidade Nova de Lisboa; Campus de Caparica 2829-516 Caparica Portugal
- REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia; Universidade Nova de Lisboa; Campus de Caparica 2829-516 Caparica Portugal
| | - Pedro M. Costa
- IMAR - Instituto do Mar, Departamento de Ciências e Engenharia do Ambiente, Faculdade de Ciências e Tecnologia; Universidade Nova de Lisboa; 2829-516 Caparica Portugal
| | - Gonçalo Sousa
- CIGMH, Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia; Universidade Nova de Lisboa; Campus de Caparica 2829-516 Caparica Portugal
| | - Maria H. Costa
- IMAR - Instituto do Mar, Departamento de Ciências e Engenharia do Ambiente, Faculdade de Ciências e Tecnologia; Universidade Nova de Lisboa; 2829-516 Caparica Portugal
| | - Mário S. Diniz
- REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia; Universidade Nova de Lisboa; Campus de Caparica 2829-516 Caparica Portugal
| | - Pedro V. Baptista
- CIGMH, Departamento Ciências da Vida, Faculdade de Ciências e Tecnologia; Universidade Nova de Lisboa; Campus de Caparica 2829-516 Caparica Portugal
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Raju J, Roberts J, Sondagar C, Kapal K, Aziz SA, Caldwell D, Mehta R. Negligible colon cancer risk from food-borne acrylamide exposure in male F344 rats and nude (nu/nu) mice-bearing human colon tumor xenografts. PLoS One 2013; 8:e73916. [PMID: 24040114 PMCID: PMC3764052 DOI: 10.1371/journal.pone.0073916] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Accepted: 07/23/2013] [Indexed: 11/20/2022] Open
Abstract
Acrylamide, a possible human carcinogen, is formed in certain carbohydrate-rich foods processed at high temperature. We evaluated if dietary acrylamide, at doses (0.5, 1.0 or 2.0 mg/kg diet) reflecting upper levels found in human foods, modulated colon tumorigenesis in two rodent models. Male F344 rats were randomized to receive diets without (control) or with acrylamide. 2-weeks later, rats in each group received two weekly subcutaneous injections of either azoxymethane (AOM) or saline, and were killed 20 weeks post-injections; colons were assessed for tumors. Male athymic nude (nu/nu) mice bearing HT-29 human colon adenocarcinoma cells-derived tumor xenografts received diets without (control) or with acrylamide; tumor growth was monitored and mice were killed 4 weeks later. In the F344 rat study, no tumors were found in the colons of the saline-injected rats. However, the colon tumor incidence was 54.2% and 66.7% in the control and the 2 mg/kg acrylamide-treated AOM-injected groups, respectively. While tumor multiplicity was similar across all diet groups, tumor size and burden were higher in the 2 mg/kg acrylamide group compared to the AOM control. These results suggest that acrylamide by itself is not a "complete carcinogen", but acts as a "co-carcinogen" by exacerbating the effects of AOM. The nude mouse study indicated no differences in the growth of human colon tumor xenografts between acrylamide-treated and control mice, suggesting that acrylamide does not aid in the progression of established tumors. Hence, food-borne acrylamide at levels comparable to those found in human foods is neither an independent carcinogen nor a tumor promoter in the colon. However, our results characterize a potential hazard of acrylamide as a colon co-carcinogen in association with known and possibly other environmental tumor initiators/promoters.
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Affiliation(s)
- Jayadev Raju
- Toxicology Research Division, Bureau of Chemical Safety Food Directorate, Health Products and Food Branch, Health Canada, Ottawa, Ontario, Canada
| | - Jennifer Roberts
- Toxicology Research Division, Bureau of Chemical Safety Food Directorate, Health Products and Food Branch, Health Canada, Ottawa, Ontario, Canada
| | - Chandni Sondagar
- Toxicology Research Division, Bureau of Chemical Safety Food Directorate, Health Products and Food Branch, Health Canada, Ottawa, Ontario, Canada
| | - Kamla Kapal
- Toxicology Research Division, Bureau of Chemical Safety Food Directorate, Health Products and Food Branch, Health Canada, Ottawa, Ontario, Canada
| | - Syed A. Aziz
- Toxicology Research Division, Bureau of Chemical Safety Food Directorate, Health Products and Food Branch, Health Canada, Ottawa, Ontario, Canada
| | - Don Caldwell
- Scientific Services Division, Bureau of Chemical Safety Food Directorate, Health Products and Food Branch, Health Canada, Ottawa, Ontario, Canada
| | - Rekha Mehta
- Toxicology Research Division, Bureau of Chemical Safety Food Directorate, Health Products and Food Branch, Health Canada, Ottawa, Ontario, Canada
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Neurotoxicity of acrylamide in exposed workers. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2013; 10:3843-54. [PMID: 23985770 PMCID: PMC3799507 DOI: 10.3390/ijerph10093843] [Citation(s) in RCA: 124] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 08/05/2013] [Accepted: 08/12/2013] [Indexed: 12/20/2022]
Abstract
Acrylamide (ACR) is a water-soluble chemical used in different industrial and laboratory processes. ACR monomer is neurotoxic in humans and laboratory animals. Subchronic exposure to this chemical causes neuropathies, hands and feet numbness, gait abnormalities, muscle weakness, ataxia, skin and in some cases, cerebellar alterations. ACR neurotoxicity involves mostly the peripheral but also the central nervous system, because of damage to the nerve terminal through membrane fusion mechanisms and tubulovescicular alterations. Nevertheless, the exact action mechanism is not completely elucidated. In this paper we have reviewed the current literature on its neurotoxicity connected to work-related ACR exposure. We have analyzed not only the different pathogenetic hypotheses focusing on possible neuropathological targets, but also the critical behavior of ACR poisoning. In addition we have evaluated the ACR-exposed workers case studies. Despite all the amount of work which have being carried out on this topic more studies are necessary to fully understand the pathogenetic mechanisms, in order to propose suitable therapies.
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Duarte-Salles T, von Stedingk H, Granum B, Gützkow KB, Rydberg P, Törnqvist M, Mendez MA, Brunborg G, Brantsæter AL, Meltzer HM, Alexander J, Haugen M. Dietary acrylamide intake during pregnancy and fetal growth-results from the Norwegian mother and child cohort study (MoBa). ENVIRONMENTAL HEALTH PERSPECTIVES 2013; 121:374-379. [PMID: 23204292 PMCID: PMC3621181 DOI: 10.1289/ehp.1205396] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2012] [Accepted: 11/29/2012] [Indexed: 05/21/2023]
Abstract
BACKGROUND Acrylamide has shown developmental and reproductive toxicity in animals, as well as neurotoxic effects in humans with occupational exposures. Because it is widespread in food and can pass through the human placenta, concerns have been raised about potential developmental effects of dietary exposures in humans. OBJECTIVES We assessed associations of prenatal exposure to dietary acrylamide with small for gestational age (SGA) and birth weight. METHODS This study included 50,651 women in the Norwegian Mother and Child Cohort Study (MoBa). Acrylamide exposure assessment was based on intake estimates obtained from a food frequency questionnaire (FFQ), which were compared with hemoglobin (Hb) adduct measurements reflecting acrylamide exposure in a subset of samples (n = 79). Data on infant birth weight and gestational age were obtained from the Medical Birth Registry of Norway. Multivariable regression was used to estimate associations between prenatal acrylamide and birth outcomes. RESULTS Acrylamide intake during pregnancy was negatively associated with fetal growth. When women in the highest quartile of acrylamide intake were compared with women in the lowest quartile, the multivariable-adjusted odds ratio (OR) for SGA was 1.11 (95% CI: 1.02, 1.21) and the coefficient for birth weight was -25.7 g (95% CI: -35.9, -15.4). Results were similar after excluding mothers who smoked during pregnancy. Maternal acrylamide- and glycidamide-Hb adduct levels were correlated with estimated dietary acrylamide intakes (Spearman correlations = 0.24; 95% CI: 0.02, 0.44; and 0.48; 95% CI: 0.29, 0.63, respectively). CONCLUSIONS Lowering dietary acrylamide intake during pregnancy may improve fetal growth.
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Affiliation(s)
- Talita Duarte-Salles
- Division of Environmental Medicine, Norwegian Institute of Public Health, Oslo, Norway
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Cody D, Naydenova I, Mihaylova E. Effect of glycerol on a diacetone acrylamide-based holographic photopolymer material. APPLIED OPTICS 2013; 52:489-494. [PMID: 23338198 DOI: 10.1364/ao.52.000489] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Accepted: 11/21/2012] [Indexed: 06/01/2023]
Abstract
The composition of the low-toxicity, environmentally compatible diacetone acrylamide (DA) photopolymer has been modified with the inclusion of different additives. The addition of glycerol to the photopolymer composition is described. Results show that the incorporation of glycerol results in a uniform maximum refractive-index modulation for recording intensities in the range of 1-20 mW/cm(2). This may be attributed to glycerol's nature as a plasticizer, which allows for faster diffusion of an unreacted monomer within the grating during holographic recording. An optimum recording intensity of 0.5 mW/cm(2) is observed for exposure energies of 20-60 mW/cm(2). The modified photopolymer achieves a refractive-index modulation of 2.2×10(-3), with diffraction efficiencies up to 90% in 100 μm layers. Glycerol has also shown to reduce the rate of photobleaching of the DA photopolymer. This is possibly due to more prevalent inhibition effects caused by increased oxygenation of the photopolymer layers. The stability of the photopolymer samples is also improved with the addition of glycerol.
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Affiliation(s)
- Dervil Cody
- Centre for Industrial and Engineering Optics, School of Physics, College of Sciences and Health, Dublin Institute of Technology, Dublin 8, Ireland
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134
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A Comparative Cytotoxic Evaluation of Acrylamide and Diacetone Acrylamide to Investigate Their Suitability for Holographic Photopolymer Formulations. INT J POLYM SCI 2013. [DOI: 10.1155/2013/564319] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The comparative cytotoxic evaluation of two monomers, diacetone acrylamide (DA) and acrylamide (AA) used in holographic photopolymer formulations, is reported. Two normal cell lines were used: BEAS-2B and HaCaT. Cellular viability was assessed using the MTT assay for three different exposure times. A difference of two orders of magnitude is observed in the lethal dose (LD50) concentrations of the two monomers. Diacetone acrylamide exhibits a significantly lower toxicity profile in comparison to acrylamide at all exposure times. This result justifies the replacement of acrylamide with diacetone acrylamide in the photopolymer formulation, with the view to reducing occupational hazard risks for large-scale holographic device fabrication. A comparative study investigating the holographic recording ability of the two photopolymers in transmission mode showed that the DA photopolymer is capable of reaching refractive index modulation values of3.3×10-3, which is 80% of the refractive index modulation achieved by the AA photopolymer. This makes the DA-based photopolymers suitable for a wide range of applications.
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135
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Von Tungeln LS, Doerge DR, da Costa GG, Marques MM, Witt WM, Koturbash I, Pogribny IP, Beland FA. Tumorigenicity of acrylamide and its metabolite glycidamide in the neonatal mouse bioassay. Int J Cancer 2012; 131:2008-15. [PMID: 22336951 PMCID: PMC4810677 DOI: 10.1002/ijc.27493] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2011] [Accepted: 01/27/2012] [Indexed: 11/09/2022]
Abstract
Acrylamide is a high-volume industrial chemical, a component of cigarette smoke, and a product formed in certain foods prepared at high temperatures. Previously, we compared the extent of DNA adduct formation and mutations in B6C3F(1) /Tk mice treated neonatally with acrylamide or glycidamide to obtain information concerning the mechanism of acrylamide genotoxicity. We have now examined the tumorigenicity of acrylamide and glycidamide in mice treated neonatally. Male B6C3F(1) mice were injected intraperitoneally on postnatal days 1, 8 and 15 with 0.0, 0.14 or 0.70 mmol acrylamide or glycidamide per kg body weight per day and the tumorigenicity was assessed after 1 year. Survival in each of the groups was >87%, there were no differences in body weights among the groups, and the only treatment-related neoplasms involved the liver. The incidence of combined hepatocellular adenoma or carcinoma was 3.8% in the control group, 8.3% in the 0.14 mmol acrylamide and glycidamide per kg body weight groups, 4.2% in the 0.70 mmol acrylamide per kg body weight group and 71.4% in the 0.70 mmol glycidamide per kg body weight group. Analysis of the hepatocellular tumors indicated that the increased incidence observed in mice administered 0.70 mmol glycidamide per kg body weight was associated with A → G and A → T mutations at codon 61 of H-ras. These results, combined with our previous data on DNA adduct formation and mutation induction, suggest that the carcinogenicity of acrylamide is dependent on its metabolism to glycidamide, a pathway that is deficient in neonatal mice.
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Affiliation(s)
- Linda S. Von Tungeln
- Division of Biochemical Toxicology, National Center for Toxicological Research, Jefferson, AR 72079
| | - Daniel R. Doerge
- Division of Biochemical Toxicology, National Center for Toxicological Research, Jefferson, AR 72079
| | - Gonçalo Gamboa da Costa
- Division of Biochemical Toxicology, National Center for Toxicological Research, Jefferson, AR 72079
| | - M. Matilde Marques
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade Técnica de Lisboa, 1049-001 Lisboa, Portugal
| | - William M. Witt
- Toxicologic Pathology Associates, National Center for Toxicological Research, Jefferson, AR 72079
| | - Igor Koturbash
- Division of Biochemical Toxicology, National Center for Toxicological Research, Jefferson, AR 72079
| | - Igor P. Pogribny
- Division of Biochemical Toxicology, National Center for Toxicological Research, Jefferson, AR 72079
| | - Frederick A. Beland
- Division of Biochemical Toxicology, National Center for Toxicological Research, Jefferson, AR 72079
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136
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Medeiros Vinci R, Mestdagh F, De Meulenaer B. Acrylamide formation in fried potato products – Present and future, a critical review on mitigation strategies. Food Chem 2012. [DOI: 10.1016/j.foodchem.2011.08.001] [Citation(s) in RCA: 167] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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137
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Camacho L, Latendresse J, Muskhelishvili L, Patton R, Bowyer J, Thomas M, Doerge D. Effects of acrylamide exposure on serum hormones, gene expression, cell proliferation, and histopathology in male reproductive tissues of Fischer 344 rats. Toxicol Lett 2012; 211:135-43. [DOI: 10.1016/j.toxlet.2012.03.007] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Revised: 03/07/2012] [Accepted: 03/09/2012] [Indexed: 10/28/2022]
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138
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Hynd MR, Turner JN, Shain W. Applications of hydrogels for neural cell engineering. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 18:1223-44. [DOI: 10.1163/156856207782177909] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Matthew R. Hynd
- a Laboratory of Nervous System Disorders, Wadsworth Center, P.O. Box 509, Empire State Plaza, Albany, NY 12201-0509, USA
| | - James N. Turner
- b Laboratory of Nervous System Disorders, Wadsworth Center, P.O. Box 509, Empire State Plaza, Albany, NY 12201-0509, USA
| | - William Shain
- c Laboratory of Nervous System Disorders, Wadsworth Center, P.O. Box 509, Empire State Plaza, Albany, NY 12201-0509, USA
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139
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Maier A, Kohrman-Vincent M, Hertzberg R, Allen B, Haber LT, Dourson M. Critical review of dose-response options for F344 rat mammary tumors for acrylamide - additional insights based on mode of action. Food Chem Toxicol 2012; 50:1763-75. [PMID: 22366097 DOI: 10.1016/j.fct.2012.02.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2010] [Revised: 01/30/2012] [Accepted: 02/05/2012] [Indexed: 11/30/2022]
Abstract
Previous risk assessment reviews analyzed the potential for dietary acrylamide to increase breast cancer risk. Here, we critically review acrylamide animal bioassay data on mammary tumors for human relevance. We applied a systematic evaluation using reasonable standards of scientific certainty and a systematic weight of evidence (WOE) approach to evaluate several hypothesized modes of action (MOA), including (1) genotoxicity related to glycidamide formation and oxidative stress, (2) endocrine effects due to age-related hyperprolactinemia or secondary to neurotoxicity, and (3) epigenetic effects. We conclude that the appropriate approach for low-dose extrapolation of the rat mammary tumors can be narrowed to two options: (1) linear low-dose extrapolation (i.e., based on a MOA of mutagenicity from direct DNA interaction) from a point of departure (POD) for the combined incidence of adenomas and adenocarcinomas, since these tumor types are related; or (2) non-linear extrapolation, using uncertainty factors to estimate a Reference Dose (RfD) from a POD for tumor promotion derived using the combined fibroadenoma, adenoma and adenocarcinoma data. Non-linear extrapolation is used in the latter approach because these combined tumor types are unlikely to be exclusively caused by mutagenicity. Comparison of the WOE for each alternative MOA indicates that a non-linear approach (option 2) is more appropriate for evaluation of acrylamide-induced mammary tumors; a linear approach (option 1) is shown for comparison.
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Affiliation(s)
- Andrew Maier
- Toxicology Excellence for Risk Assessment, Cincinnati, OH 45211, United States.
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140
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141
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Schütte K, Boeing H, Hart A, Heeschen W, Reimerdes EH, Santare D, Skog K, Chiodini A. Application of the BRAFO tiered approach for benefit-risk assessment to case studies on heat processing contaminants. Food Chem Toxicol 2012; 50 Suppl 4:S724-35. [PMID: 22330202 DOI: 10.1016/j.fct.2012.01.044] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2011] [Revised: 01/27/2012] [Accepted: 01/28/2012] [Indexed: 11/24/2022]
Abstract
The aim of the European Funded Project BRAFO (benefit-risk analysis of foods) project was to develop a framework that allows quantitative comparison of human health risks and benefits of foods based on a common scale of measurement. This publication describes the application of the BRAFO methodology to three different case studies: the formation of acrylamide in potato and cereal based products, the formation of benzo(a)pyrene through smoking and grilling of meat and fish and the heat-treatment of milk. Reference, alternative scenario and target population represented the basic structure to test the tiers of the framework. Various intervention methods intended to reduce acrylamide in potato and cereal products were evaluated against the historical production methods. In conclusion the benefits of the acrylamide-reducing measures were considered prevailing. For benzo(a)pyrene, three illustrated alternative scenarios were evaluated against the most common smoking practice. The alternative scenarios were assessed as delivering benefits, introducing only minimal potential risks. Similar considerations were made for heat treatment of milk where the comparison of the microbiological effects of heat treatment, physico-chemical changes of milk constituents with positive and negative health effects was assessed. In general, based on data available, benefits of the heat treatment were outweighing any risks.
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Affiliation(s)
- Katrin Schütte
- Procter & Gamble Eurocor, Temselaan 100 Box 43, 1853 Strombeek-Bever, Belgium
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142
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Arribas-Lorenzo G, Morales FJ. Recent Insights in Acrylamide as Carcinogen in Foodstuffs. ADVANCES IN MOLECULAR TOXICOLOGY VOLUME 6 2012. [DOI: 10.1016/b978-0-444-59389-4.00005-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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143
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Lineback DR, Coughlin JR, Stadler RH. Acrylamide in foods: a review of the science and future considerations. Annu Rev Food Sci Technol 2011; 3:15-35. [PMID: 22136129 DOI: 10.1146/annurev-food-022811-101114] [Citation(s) in RCA: 122] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Acrylamide occurs in foods commonly consumed in diets worldwide. It is formed from the reaction of reducing sugars (e.g., glucose or fructose) with the amino acid asparagine via the Maillard reaction, which occurs during heat processing of foods, primarily those derived from plant origin, such as potato and cereal products, above 120°C (248°F). The majority of epidemiological studies concerning potential relationships between acrylamide consumption and different types of cancer have indicated no increased risk, except with a few types that warrant further study. Efforts to reduce the formation of acrylamide in food products have resulted in some successes, but there is no common approach that works for all foods. Reduction in some foods is probably not possible. The results from a major toxicological study (aqueous intake of acrylamide by rats and mice) are in the process of being released. The status of current knowledge in these areas is reviewed.
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Affiliation(s)
- David R Lineback
- Joint Institute for Food Safety and Applied Nutrition (JIFSAN), University of Maryland, College Park, Maryland 20742, United States.
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144
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Neuroprotective Effect of Crocin on Acrylamide-induced Cytotoxicity in PC12 cells. Cell Mol Neurobiol 2011; 32:227-35. [DOI: 10.1007/s10571-011-9752-8] [Citation(s) in RCA: 150] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Accepted: 08/18/2011] [Indexed: 11/27/2022]
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145
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Dueker SR, Vuong LT, Lohstroh PN, Giacomo JA, Vogel JS. Quantifying exploratory low dose compounds in humans with AMS. Adv Drug Deliv Rev 2011; 63:518-31. [PMID: 21047543 PMCID: PMC3062634 DOI: 10.1016/j.addr.2010.10.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2010] [Revised: 10/08/2010] [Accepted: 10/18/2010] [Indexed: 11/20/2022]
Abstract
Accelerator Mass Spectrometry is an established technology whose essentiality extends beyond simply a better detector for radiolabeled molecules. Attomole sensitivity reduces radioisotope exposures in clinical subjects to the point that no population need be excluded from clinical study. Insights in human physiochemistry are enabled by the quantitative recovery of simplified AMS processes that provide biological concentrations of all labeled metabolites and total compound related material at non-saturating levels. In this paper, we review some of the exploratory applications of AMS (14)C in toxicological, nutritional, and pharmacological research. This body of research addresses the human physiochemistry of important compounds in their own right, but also serves as examples of the analytical methods and clinical practices that are available for studying low dose physiochemistry of candidate therapeutic compounds, helping to broaden the knowledge base of AMS application in pharmaceutical research.
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146
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Capuano E, Fogliano V. Acrylamide and 5-hydroxymethylfurfural (HMF): A review on metabolism, toxicity, occurrence in food and mitigation strategies. Lebensm Wiss Technol 2011. [DOI: 10.1016/j.lwt.2010.11.002] [Citation(s) in RCA: 492] [Impact Index Per Article: 37.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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147
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Raju J, Sondagar C, Roberts J, Aziz SA, Caldwell D, Vavasour E, Mehta R. Dietary acrylamide does not increase colon aberrant crypt foci formation in male F344 rats. Food Chem Toxicol 2011; 49:1373-80. [PMID: 21421017 DOI: 10.1016/j.fct.2011.03.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2010] [Revised: 02/25/2011] [Accepted: 03/15/2011] [Indexed: 02/07/2023]
Abstract
Acrylamide, a known rodent and a probable human carcinogen, is spontaneously formed in foods cooked at high temperature. We studied the role of dietary acrylamide in modulating the early stages of colon carcinogenesis and assessed if dietary fat level was critical in altering the effects of acrylamide. Male F344 rats were subcutaneously injected with azoxymethane and were simultaneously randomized into 8 dietary groups (n=8 rats/group). Diets were based on AIN-93G semi-synthetic formula modified to contain either low fat (7% corn oil) or high fat (23.9% corn oil) and acrylamide at 0, 5, 10 or 50 mg/kg diet (wt/wt). All rats received the experimental diets ad libitum for 8 weeks, after which they were killed and their colons assessed for aberrant crypt foci (ACF), putative precancerous lesions. Irrespective of dietary fat level, rats with the highest tested dose of acrylamide (50 mg/kg diet) had significantly lower total ACF (p<0.05) and lower large ACF (those with 4 or more crypts/focus; p<0.001) compared with their respective controls (0 mg/kg diet). A significantly lower number of large ACF (p=0.046) was noted in rats treated with 10 mg/kg diet acrylamide exclusively in the high fat group, compared to the high fat control. This short-term bio-assay to test carcinogenicity of dietary acrylamide in the colon demonstrates that acrylamide, when administered through the diet at doses known to cause rat tumors, does not increase the risk of developing azoxymethane-induced precancerous lesions of the colon in rats. On the contrary, a high dose of dietary acrylamide decreased the growth of precancerous lesions in both low and high fat diet regimens in this model.
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Affiliation(s)
- Jayadev Raju
- Toxicology Research Division, Bureau of Chemical Safety, Food Directorate, Health Products and Food Branch Health Canada, Ottawa, Ontario, Canada.
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148
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Arribas-Lorenzo G, Pintado-Sierra M, Morales FJ. Isolation and Structural Characterization of Acrylamide−Pyridoxamine Adducts. Chem Res Toxicol 2011; 24:321-8. [DOI: 10.1021/tx100293y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gema Arribas-Lorenzo
- Instituto de Ciencia y Tecnología de Alimentos y Nutrición, 28040, and ‡Instituto de Ciencia de Materiales de Madrid, 28049, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - Mercedes Pintado-Sierra
- Instituto de Ciencia y Tecnología de Alimentos y Nutrición, 28040, and ‡Instituto de Ciencia de Materiales de Madrid, 28049, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - Francisco J. Morales
- Instituto de Ciencia y Tecnología de Alimentos y Nutrición, 28040, and ‡Instituto de Ciencia de Materiales de Madrid, 28049, Consejo Superior de Investigaciones Científicas, Madrid, Spain
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149
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Elhajouji A, Lukamowicz M, Cammerer Z, Kirsch-Volders M. Potential thresholds for genotoxic effects by micronucleus scoring. Mutagenesis 2010; 26:199-204. [DOI: 10.1093/mutage/geq089] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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150
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Hogervorst JGF, Baars BJ, Schouten LJ, Konings EJM, Goldbohm RA, van den Brandt PA. The carcinogenicity of dietary acrylamide intake: a comparative discussion of epidemiological and experimental animal research. Crit Rev Toxicol 2010; 40:485-512. [PMID: 20170357 DOI: 10.3109/10408440903524254] [Citation(s) in RCA: 119] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Since 2002, it is known that the probable human carcinogen acrylamide is present in commonly consumed carbohydrate-rich foods, such as French fries and potato chips. In this review, the authors discuss the body of evidence on acrylamide carcinogenicity from both epidemiological and rodent studies, including variability, strengths and weaknesses, how both types of evidence relate, and possible reasons for discrepancies. In both rats and humans, increased incidences of various cancer types were observed. In rats, increased incidences of mammary gland, thyroid tumors and scrotal mesothelioma were observed in both studies that were performed. In humans, increased risks of ovarian and endometrial cancers, renal cell cancer, estrogen (and progesterone) receptor-positive breast cancer, and oral cavity cancer (the latter in non-smoking women) were observed. Some cancer types were found in both rats and humans, e.g., endometrial cancer (observed in one of the two rat studies), but there are also some inconsistencies. Interestingly, in humans, some indications for inverse associations were observed for lung and bladder cancers in women, and prostate and oro- and hypopharynx cancers in men. These latter observations indicate that genotoxicity may not be the only mechanism by which acrylamide causes cancer. The estimated risks based on the epidemiological studies for the sites for which a positive association was observed were considerably higher than those based on extrapolations from the rat studies. The observed pattern of increased risks in the rat and epidemiological studies and the decreased risks in the epidemiological studies suggests that acrylamide might influence hormonal systems, for which rodents may not be good models.
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Affiliation(s)
- Janneke G F Hogervorst
- Department of Epidemiology, GROW-School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands.
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