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Salama M, Mohammed DM, Fahmy K, Al-Senosy NK, Ebeed NM, Farouk A. Evaluation of the cytotoxicity and genotoxicity potential of synthetic diacetyl food flavoring in silico, in vivo, and in vitro. Food Chem Toxicol 2023:113923. [PMID: 37399938 DOI: 10.1016/j.fct.2023.113923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 06/24/2023] [Accepted: 06/28/2023] [Indexed: 07/05/2023]
Abstract
Diacetyl is a common ingredient that creates a buttery flavor in baked goods and other food products. The cytotoxic impact of diacetyl on a normal human liver cell line (THLE2) indicated an IC50 value of 41.29 mg/ml through MTT assay and a cell cycle arrest in the G0/G1 phase relative to the control. Administration of diacetyl at two-time points (acute-chronic) led to a significant increase in DNA damage indicated by the increase in tail length, tail DNA%, and tail moment. The mRNA and protein expression levels of genes in the rats' livers were then measured using real-time PCR and western blotting. The results showed an activation of the apoptotic and necrosis mechanism, with an upregulation of p53, Caspase 3, and RIP1 and a downregulation of Bcl-2 at the mRNA level. The ingestion of diacetyl disrupted the liver's oxidant/antioxidant balance, as evidenced by alterations in levels of GSH, SOD, CAT, GPx, GR, MDA, NO, and peroxynitrite. Additionally, heightened levels of inflammatory cytokines were shown. Histopathological examinations revealed necrotic foci and congested portal areas in the rats' liver cells after treatment with diacetyl. Diacetyl may interact moderately with Caspase, RIP1, and p53 core domain through In-silico, possibly resulting in upregulated gene expression.
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Affiliation(s)
- Mohamed Salama
- Preventive Medicine Dept, Health Affairs Directorate, Ministry of Health, Ataba, 11511, Cairo, Egypt
| | - Dina Mostafa Mohammed
- Nutrition and Food Sciences Department, National Research Centre, Cairo, 12622, Egypt
| | - Khaled Fahmy
- Genetics Department, Faculty of Agriculture, Ain Shams University, Hadayek Shoubra, 11241, Cairo, Egypt
| | - Neima K Al-Senosy
- Genetics Department, Faculty of Agriculture, Ain Shams University, Hadayek Shoubra, 11241, Cairo, Egypt
| | - Naglaa M Ebeed
- Genetics Department, Faculty of Agriculture, Ain Shams University, Hadayek Shoubra, 11241, Cairo, Egypt
| | - Amr Farouk
- Flavour and Aroma Chemistry Department, National Research Centre, Cairo, 12622, Egypt.
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Tabaa MME, Aboalazm HM, Shaalan M, Khedr NF. Silymarin constrains diacetyl-prompted oxidative stress and neuroinflammation in rats: involvements of Dyn/GDNF and MAPK signaling pathway. Inflammopharmacology 2022; 30:961-980. [PMID: 35366745 PMCID: PMC9135832 DOI: 10.1007/s10787-022-00961-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 02/25/2022] [Indexed: 11/26/2022]
Abstract
Neuroinflammation, a major component of many CNS disorders, has been suggested to be associated with diacetyl (DA) exposure. DA is commonly used as a food flavoring additive and condiment. Lately, silymarin (Sily) has shown protective and therapeutic effects on neuronal inflammation. The study aimed to explore the role of Sily in protecting and/or treating DA-induced neuroinflammation. Neuroinflammation was induced in rats by administering DA (25 mg/kg) orally. Results revealed that Sily (50 mg/kg) obviously maintained cognitive and behavioral functions, alleviated brain antioxidant status, and inhibited microglial activation. Sily enhanced IL-10, GDNF and Dyn levels, reduced IFN-γ, TNFα, and IL-1β levels, and down-regulated the MAPK pathway. Immunohistochemical investigation of EGFR and GFAP declared that Sily could conserve neurons from inflammatory damage. However, with continuing DA exposure during Sily treatment, oxidative stress and neuroinflammation were less mitigated. These findings point to a novel mechanism involving the Dyn/GDNF and MAPK pathway through which Sily might prevent and treat DA-induced neuroinflammation.
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Affiliation(s)
- Manar Mohammed El Tabaa
- Pharmacology & Environmental Toxicology, Environmental Studies & Research Institute (ESRI), University of Sadat City, Minofia Governorate, Sadat city, Egypt
| | - Hamdi M. Aboalazm
- Biochemistry, Environmental Studies & Research Institute (ESRI), University of Sadat City, Sadat City, Egypt
| | - Mohamed Shaalan
- Pathology Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
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Di Minno A, Gelzo M, Caterino M, Costanzo M, Ruoppolo M, Castaldo G. Challenges in Metabolomics-Based Tests, Biomarkers Revealed by Metabolomic Analysis, and the Promise of the Application of Metabolomics in Precision Medicine. Int J Mol Sci 2022; 23:5213. [PMID: 35563604 PMCID: PMC9103094 DOI: 10.3390/ijms23095213] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 04/29/2022] [Accepted: 05/05/2022] [Indexed: 12/12/2022] Open
Abstract
Metabolomics helps identify metabolites to characterize/refine perturbations of biological pathways in living organisms. Pre-analytical, analytical, and post-analytical limitations that have hampered a wide implementation of metabolomics have been addressed. Several potential biomarkers originating from current targeted metabolomics-based approaches have been discovered. Precision medicine argues for algorithms to classify individuals based on susceptibility to disease, and/or by response to specific treatments. It also argues for a prevention-based health system. Because of its ability to explore gene-environment interactions, metabolomics is expected to be critical to personalize diagnosis and treatment. Stringent guidelines have been applied from the very beginning to design studies to acquire the information currently employed in precision medicine and precision prevention approaches. Large, prospective, expensive and time-consuming studies are now mandatory to validate old, and discover new, metabolomics-based biomarkers with high chances of translation into precision medicine. Metabolites from studies on saliva, sweat, breath, semen, feces, amniotic, cerebrospinal, and broncho-alveolar fluid are predicted to be needed to refine information from plasma and serum metabolome. In addition, a multi-omics data analysis system is predicted to be needed for omics-based precision medicine approaches. Omics-based approaches for the progress of precision medicine and prevention are expected to raise ethical issues.
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Affiliation(s)
- Alessandro Di Minno
- Dipartimento di Farmacia, University of Naples Federico II, 80131 Naples, Italy
- CEINGE-Biotecnologie Avanzate, 80131 Naples, Italy; (M.G.); (M.C.); (M.C.); (M.R.); (G.C.)
| | - Monica Gelzo
- CEINGE-Biotecnologie Avanzate, 80131 Naples, Italy; (M.G.); (M.C.); (M.C.); (M.R.); (G.C.)
- Department of Molecular Medicine and Medical Biotechnology, School of Medicine, University of Naples Federico II, 80131 Naples, Italy
| | - Marianna Caterino
- CEINGE-Biotecnologie Avanzate, 80131 Naples, Italy; (M.G.); (M.C.); (M.C.); (M.R.); (G.C.)
- Department of Molecular Medicine and Medical Biotechnology, School of Medicine, University of Naples Federico II, 80131 Naples, Italy
| | - Michele Costanzo
- CEINGE-Biotecnologie Avanzate, 80131 Naples, Italy; (M.G.); (M.C.); (M.C.); (M.R.); (G.C.)
- Department of Molecular Medicine and Medical Biotechnology, School of Medicine, University of Naples Federico II, 80131 Naples, Italy
| | - Margherita Ruoppolo
- CEINGE-Biotecnologie Avanzate, 80131 Naples, Italy; (M.G.); (M.C.); (M.C.); (M.R.); (G.C.)
- Department of Molecular Medicine and Medical Biotechnology, School of Medicine, University of Naples Federico II, 80131 Naples, Italy
| | - Giuseppe Castaldo
- CEINGE-Biotecnologie Avanzate, 80131 Naples, Italy; (M.G.); (M.C.); (M.C.); (M.R.); (G.C.)
- Department of Molecular Medicine and Medical Biotechnology, School of Medicine, University of Naples Federico II, 80131 Naples, Italy
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Xie W, Kim KH, Vince R, More SS. The Amyloid Aggregation Accelerator Diacetyl Prevents Cognitive Decline in Alzheimer's Mouse Models. Chem Res Toxicol 2021; 34:1355-1366. [PMID: 33857375 DOI: 10.1021/acs.chemrestox.1c00089] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Diacetyl (DA), a food flavorant, is linked with occupational lung disease. Our in vitro experiments described the formation of a covalent adduct by DA with Arg5 of the Aβ1-42 peptide, which resulted in only a transient increase in neurotoxicity in SH-SY5Y cells. However, in vivo implications of these effects on Alzheimer's disease (AD) pathogenesis and the underlying mechanisms remain poorly understood. In the APP/PS1 transgenic AD mouse model, DA treatment did not exacerbate learning and memory deficits in the Morris water maze test. Moreover, DA increased the Aβ1-42 plaque burden and decreased neuronal inflammation in the transgenic AD mice. Additionally, cognitive impairment induced by intracerebroventricular Aβ1-42 was restored by the DA treatment, as assessed by the T-maze test. A corresponding mitigation of neuronal inflammation was also observed in the hippocampus of these nontransgenic mice due to the acceleration of Aβ1-42 aggregation by DA into nontoxic plaques. The data from SDS-PAGE, dot-blot, and TEM in vitro experiments corroborated the acceleration of the Aβ1-42 aggregation observed in vivo in AD animal models and characterized the DA-induced formation of Aβ1-42 fibrils. Such Aβ1-42-DA fibrils were unstable in the presence of detergent and amenable to detection by the thioflavin T reagent, thus underscoring the distinct assembly of these fibrils compared to that of the fibrils of the native Aβ1-42. Taken together, the results of this study present for the first time the in vivo implications of the DA-induced acceleration of Aβ1-42 and may provide a strategy for the rational design of Aβ1-42 aggregation accelerators as AD therapeutics that promote oligomer-free Aβ1-42 fibril formation.
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Affiliation(s)
- Wei Xie
- Center for Drug Design, College of Pharmacy, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Kwan Hyun Kim
- Center for Drug Design, College of Pharmacy, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Robert Vince
- Center for Drug Design, College of Pharmacy, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Swati S More
- Center for Drug Design, College of Pharmacy, University of Minnesota, Minneapolis, Minnesota 55455, United States
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Pinu FR, Goldansaz SA, Jaine J. Translational Metabolomics: Current Challenges and Future Opportunities. Metabolites 2019; 9:E108. [PMID: 31174372 PMCID: PMC6631405 DOI: 10.3390/metabo9060108] [Citation(s) in RCA: 104] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 06/04/2019] [Accepted: 06/04/2019] [Indexed: 02/06/2023] Open
Abstract
Metabolomics is one of the latest omics technologies that has been applied successfully in many areas of life sciences. Despite being relatively new, a plethora of publications over the years have exploited the opportunities provided through this data and question driven approach. Most importantly, metabolomics studies have produced great breakthroughs in biomarker discovery, identification of novel metabolites and more detailed characterisation of biological pathways in many organisms. However, translation of the research outcomes into clinical tests and user-friendly interfaces has been hindered due to many factors, some of which have been outlined hereafter. This position paper is the summary of discussion on translational metabolomics undertaken during a peer session of the Australian and New Zealand Metabolomics Conference (ANZMET 2018) held in Auckland, New Zealand. Here, we discuss some of the key areas in translational metabolomics including existing challenges and suggested solutions, as well as how to expand the clinical and industrial application of metabolomics. In addition, we share our perspective on how full translational capability of metabolomics research can be explored.
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Affiliation(s)
- Farhana R Pinu
- The New Zealand Institute for Plant and Food Research, Private Bag 92169, Auckland 1142, New Zealand.
| | - Seyed Ali Goldansaz
- Department of Agriculture, Food and Nutritional Sciences, University of Alberta, Edmonton, AB T6G 2P5, Canada.
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada.
| | - Jacob Jaine
- Analytica Laboratories Ltd., Ruakura Research Centre, Hamilton 3216, New Zealand.
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Chen H, Yue X, Yang J, Lv C, Dong S, Luo X, Sun Z, Zhang Y, Li B, Zhang F, Gu H, Yang Y, Zhang Q, Ge S, Bi H, Zheng D, Zhao Y, Li C, Peng W. Pyrolysis molecule of Torreya grandis bark for potential biomedicine. Saudi J Biol Sci 2019; 26:808-815. [PMID: 31049007 PMCID: PMC6486518 DOI: 10.1016/j.sjbs.2019.01.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 01/07/2019] [Accepted: 01/08/2019] [Indexed: 11/27/2022] Open
Abstract
Torreya grandis is a unique tree species in China. Although full use has been made of the timber, the processing and utilization of the bark has not been effective. In order to explore a new way to utilize the bark of Torreya grandis, a powder of T. grandis bark was prepared and analyzed qualitatively and quantitatively. Differential scanning calorimetry (TG) and pyrolysis gas chromatography-mass spectrometry (PY-GC/MS) revealed many bioactive components in the bark of T. grandis, such as acetic acid, 2-methoxy-4-vinyl phenol, D-mannose, and furfural. These substances have potential broad applications in the chemical industry, biomedicine, and food additives. The chemical constituents of the bark of T. grandis suggest a theoretical basis for the future development and utilization of the bark of T. grandis.
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Affiliation(s)
- Huiling Chen
- School of Forestry, Henan Agricultural University, Zhengzhou 450002, China
| | - Xiaochen Yue
- School of Forestry, Henan Agricultural University, Zhengzhou 450002, China
| | - Jun Yang
- School of Forestry, Henan Agricultural University, Zhengzhou 450002, China
| | - Chunxia Lv
- The Scientific Research Institution, Henan Xiaoqinling National Nature Reserve Administration Bureau, Sanmenxia 472500, China
| | - Shuaiwei Dong
- The Scientific Research Institution, Henan Xiaoqinling National Nature Reserve Administration Bureau, Sanmenxia 472500, China
| | - Xuefeng Luo
- The Scientific Research Institution, Henan Xiaoqinling National Nature Reserve Administration Bureau, Sanmenxia 472500, China
| | - Zhiyong Sun
- The Scientific Research Institution, Henan Xiaoqinling National Nature Reserve Administration Bureau, Sanmenxia 472500, China
| | - Ying Zhang
- The Scientific Research Institution, Henan Xiaoqinling National Nature Reserve Administration Bureau, Sanmenxia 472500, China
| | - Baoxiang Li
- The Scientific Research Institution, Henan Xiaoqinling National Nature Reserve Administration Bureau, Sanmenxia 472500, China
| | - Faping Zhang
- The Scientific Research Institution, Henan Xiaoqinling National Nature Reserve Administration Bureau, Sanmenxia 472500, China
| | - Haiping Gu
- School of Forestry, Henan Agricultural University, Zhengzhou 450002, China
| | - Yafeng Yang
- School of Forestry, Henan Agricultural University, Zhengzhou 450002, China
| | - Qiuling Zhang
- School of Forestry, Henan Agricultural University, Zhengzhou 450002, China
| | - Shengbo Ge
- Department of Mechanical and Energy Engineering, University of North Texas, Denton, TX 76203, USA
| | - Huitao Bi
- School of Forestry, Henan Agricultural University, Zhengzhou 450002, China
| | - Dongfang Zheng
- School of Forestry, Henan Agricultural University, Zhengzhou 450002, China
| | - Yong Zhao
- School of Forestry, Henan Agricultural University, Zhengzhou 450002, China
| | - Cheng Li
- School of Forestry, Henan Agricultural University, Zhengzhou 450002, China
| | - Wanxi Peng
- School of Forestry, Henan Agricultural University, Zhengzhou 450002, China
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