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Zhang J, Yin Z, Liang Z, Bai Y, Zhang T, Yang J, Li X, Xue L. Impacts of cryopreservation on phenotype and functionality of mononuclear cells in peripheral blood and ascites. J Transl Int Med 2024; 12:51-63. [PMID: 38525442 PMCID: PMC10956725 DOI: 10.2478/jtim-2023-0136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024] Open
Abstract
Background Mononuclear cells in peripheral blood and ascites are important clinical resources commonly used in translational and basic research. However, the impact of different cryopreservation durations and extra freeze-thaw cycles on the number and function of mononuclear cells is unknown. Methods Peripheral blood samples (n = 21) and ascites samples (n = 8) were collected from healthy volunteers and ovarian cancer patients. Mononuclear cells were isolated, frozen, and thawed at 6 and 12 months. The impact of cryopreservation on cell viability, the phenotype, and the activation and proliferation of T cells were analyzed by flow cytometry. Single-cell sequencing was applied to investigate the underlying mechanism. Results The cell number and viability of mononuclear cells in peripheral blood and ascites were significantly decreased after cryopreservation. The T lymphocytes, especially CD4+ T cells, were affected the most significantly. By contrast, monocytes, natural killer (NK) cells, natural killer T (NKT) cells, and B cells were more tolerant. Meanwhile, T cell proliferation and IL-2 secretion are significantly affected after long-term cryopreservation. Mechanistically, the cell death induced by elevated reactive oxygen species (ROS) was involved in the reduction of CD4+ T cells after cryopreservation. Conclusions Our data indicates that different subtypes of mononuclear cells exhibit different tolerance capacities upon cryopreservation. Thus, our research can provide evidence and support for individuals who are conducting experiments using frozen clinical patient-derived mononuclear cells, for basic research or clinical trials. In addition, extra caution is worthwhile when researchers compare immune cell functionality from peripheral blood or ascites across datasets obtained in different cryopreservation conditions.
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Affiliation(s)
- Jie Zhang
- Center of Basic Medical Research, Institute of Medical Innovation and Research, Peking University Third Hospital, Beijing, China
- Biobank, Peking University Third Hospital, Beijing, China
| | - Zhongnan Yin
- Center of Basic Medical Research, Institute of Medical Innovation and Research, Peking University Third Hospital, Beijing, China
- Biobank, Peking University Third Hospital, Beijing, China
| | - Zhaoyuan Liang
- Center of Basic Medical Research, Institute of Medical Innovation and Research, Peking University Third Hospital, Beijing, China
| | - Yang Bai
- Center of Basic Medical Research, Institute of Medical Innovation and Research, Peking University Third Hospital, Beijing, China
| | - Ting Zhang
- Center of Basic Medical Research, Institute of Medical Innovation and Research, Peking University Third Hospital, Beijing, China
- Biobank, Peking University Third Hospital, Beijing, China
| | - Jianling Yang
- Center of Basic Medical Research, Institute of Medical Innovation and Research, Peking University Third Hospital, Beijing, China
| | - Xianlong Li
- Center of Basic Medical Research, Institute of Medical Innovation and Research, Peking University Third Hospital, Beijing, China
| | - Lixiang Xue
- Center of Basic Medical Research, Institute of Medical Innovation and Research, Peking University Third Hospital, Beijing, China
- Biobank, Peking University Third Hospital, Beijing, China
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2
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Møller P, Azqueta A, Rodriguez-Garraus A, Bakuradze T, Richling E, Bankoglu EE, Stopper H, Claudino Bastos V, Langie SAS, Jensen A, Ristori S, Scavone F, Giovannelli L, Wojewódzka M, Kruszewski M, Valdiglesias V, Laffon B, Costa C, Costa S, Paulo Teixeira J, Marino M, Del Bo' C, Riso P, Zheng C, Shaposhnikov S, Collins A. Long-term cryopreservation of potassium bromate positive assay controls for measurement of oxidatively damaged DNA by the Fpg-modified comet assay: results from the hCOMET ring trial. Mutagenesis 2023; 38:264-272. [PMID: 37357815 DOI: 10.1093/mutage/gead020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 06/23/2023] [Indexed: 06/27/2023] Open
Abstract
The formamidopyrimidine DNA glycosylase (Fpg)-modified comet assay is widely used for the measurement of oxidatively generated damage to DNA. However, there has not been a recommended long-term positive control for this version of the comet assay. We have investigated potassium bromate as a positive control for the Fpg-modified comet assay because it generates many Fpg-sensitive sites with a little concurrent generation of DNA strand breaks. Eight laboratories used the same procedure for the treatment of monocytic THP-1 cells with potassium bromate (0, 0.5, 1.5, and 4.5 mM) and subsequent cryopreservation in a freezing medium consisting of 50% foetal bovine serum, 40% RPMI-1640 medium, and 10% dimethyl sulphoxide. The samples were analysed by the Fpg-modified comet assay three times over a 3-year period. All laboratories obtained a positive concentration-response relationship in cryopreserved samples (linear regression coefficients ranging from 0.79 to 0.99). However, there was a wide difference in the levels of Fpg-sensitive sites between the laboratory with the lowest (4.2% Tail DNA) and highest (74% Tail DNA) values in THP-1 cells after exposure to 4.5 mM KBrO3. In an attempt to assess sources of inter-laboratory variation in Fpg-sensitive sites, comet images from one experiment in each laboratory were forwarded to a central laboratory for visual scoring. There was high consistency between measurements of %Tail DNA values in each laboratory and the visual score of the same comets done in the central laboratory (r = 0.98, P < 0.001, linear regression). In conclusion, the results show that potassium bromate is a suitable positive comet assay control.
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Affiliation(s)
- Peter Møller
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade 5A, DK-1014 Copenhagen K, Denmark
| | - Amaya Azqueta
- Department of Pharmacology and Toxicology, School of Pharmacy and Nutrition, University of Navarra, C/Irunlarrea 1, 31009 Pamplona, Spain
| | - Adriana Rodriguez-Garraus
- Department of Pharmacology and Toxicology, School of Pharmacy and Nutrition, University of Navarra, C/Irunlarrea 1, 31009 Pamplona, Spain
| | - Tamara Bakuradze
- Food Chemistry and Toxicology, Department of Chemistry, Rhineland-Palatinate Technical University Kaiserslautern-Landau, Erwin-Schroedinger-Str. 52, D-67663 Kaiserslautern, Germany
| | - Elke Richling
- Food Chemistry and Toxicology, Department of Chemistry, Rhineland-Palatinate Technical University Kaiserslautern-Landau, Erwin-Schroedinger-Str. 52, D-67663 Kaiserslautern, Germany
| | - Ezgi Eyluel Bankoglu
- Institute of Pharmacology and Toxicology, University of Wuerzburg, Versbacher Str. 9, 97078 Wuerzburg, Germany
| | - Helga Stopper
- Institute of Pharmacology and Toxicology, University of Wuerzburg, Versbacher Str. 9, 97078 Wuerzburg, Germany
| | - Victoria Claudino Bastos
- Department of Pharmacology and Toxicology, School for Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Maastricht, The Netherlands
| | - Sabine A S Langie
- Department of Pharmacology and Toxicology, School for Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Maastricht, The Netherlands
| | - Annie Jensen
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade 5A, DK-1014 Copenhagen K, Denmark
| | - Sara Ristori
- Department of Neuroscience, Psychology, Pharmacology and Child Health (NEUROFARBA), Section Pharmacology and Toxicology, University of Florence, Florence, Italy
| | - Francesca Scavone
- Department of Neuroscience, Psychology, Pharmacology and Child Health (NEUROFARBA), Section Pharmacology and Toxicology, University of Florence, Florence, Italy
| | - Lisa Giovannelli
- Department of Neuroscience, Psychology, Pharmacology and Child Health (NEUROFARBA), Section Pharmacology and Toxicology, University of Florence, Florence, Italy
| | - Maria Wojewódzka
- Centre for Radiobiology and Biological Dosimetry, Institute of Nuclear Chemistry and Technology, Dorodna 16, 01-310 Warsaw, Poland
| | - Marcin Kruszewski
- Centre for Radiobiology and Biological Dosimetry, Institute of Nuclear Chemistry and Technology, Dorodna 16, 01-310 Warsaw, Poland
- Department of Molecular Biology and Translational Research, Institute of Rural Health, Jaczewskiego 2, 20-090 Lublin, Poland
| | - Vanessa Valdiglesias
- Universidade da Coruña, Grupo NanoToxGen, Centro Interdisciplinar de Química e Bioloxía - CICA, Departamento de Biología, A Coruña, Spain
- Instituto de Investigación Biomédica de A Coruña (INIBIC), A Coruña, Spain
| | - Blanca Laffon
- Instituto de Investigación Biomédica de A Coruña (INIBIC), A Coruña, Spain
- Universidade da Coruña, Grupo DICOMOSA, Centro Interdisciplinar de Química e Bioloxía - CICA, Departamento de Psicología, A Coruña, Spain
| | - Carla Costa
- Environmental Health Department, National Institute of Health, Porto, Portugal
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
- Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal
| | - Solange Costa
- Environmental Health Department, National Institute of Health, Porto, Portugal
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
- Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal
| | - João Paulo Teixeira
- Environmental Health Department, National Institute of Health, Porto, Portugal
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
- Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal
| | - Mirko Marino
- Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milan, Italy
| | - Cristian Del Bo'
- Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milan, Italy
| | - Patrizia Riso
- Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milan, Italy
| | - Congying Zheng
- Department of Pharmacology and Toxicology, School for Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Maastricht, The Netherlands
- Department of Nutrition, University of Oslo, Norway
| | | | - Andrew Collins
- Department of Nutrition, University of Oslo, Norway
- NorGenotech AS, Oslo, Norway
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3
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Møller P, Azqueta A, Rodriguez-Garraus A, Bakuradze T, Richling E, Bankoglu EE, Stopper H, Claudino Bastos V, Langie SAS, Jensen A, Ristori S, Scavone F, Giovannelli L, Wojewódzka M, Kruszewski M, Valdiglesias V, Laffon B, Costa C, Costa S, Paulo Teixeira J, Marino M, Del Bo C, Riso P, Zheng C, Shaposhnikov S, Collins A. DNA strand break levels in cryopreserved mononuclear blood cell lines measured by the alkaline comet assay: results from the hCOMET ring trial. Mutagenesis 2023; 38:273-282. [PMID: 37357800 DOI: 10.1093/mutage/gead019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 06/23/2023] [Indexed: 06/27/2023] Open
Abstract
The comet assay is widely used in biomonitoring studies for the analysis of DNA damage in leukocytes and peripheral blood mononuclear cells. Rather than processing blood samples directly, it can be desirable to cryopreserve whole blood or isolated cells for later analysis by the comet assay. However, this creates concern about artificial accumulation of DNA damage during cryopreservation. In this study, 10 laboratories used standardized cryopreservation and thawing procedures of monocytic (THP-1) or lymphocytic (TK6) cells. Samples were cryopreserved in small aliquots in 50% foetal bovine serum, 40% cell culture medium, and 10% dimethyl sulphoxide. Subsequently, cryopreserved samples were analysed by the standard comet assay on three occasions over a 3-year period. Levels of DNA strand breaks in THP-1 cells were increased (four laboratories), unaltered (four laboratories), or decreased (two laboratories) by long-term storage. Pooled analysis indicates only a modest positive association between storage time and levels of DNA strand breaks in THP-1 cells (0.37% Tail DNA per year, 95% confidence interval: -0.05, 0.78). In contrast, DNA strand break levels were not increased by cryopreservation in TK6 cells. There was inter-laboratory variation in levels of DNA strand breaks in THP-1 cells (SD = 3.7% Tail DNA) and TK6 reference sample cells (SD = 9.4% Tail DNA), whereas the intra-laboratory residual variation was substantially smaller (i.e. SD = 0.4%-2.2% Tail DNA in laboratories with the smallest and largest variation). In conclusion, the study shows that accumulation of DNA strand breaks in cryopreserved mononuclear blood cell lines is not a matter of concern.
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Affiliation(s)
- Peter Møller
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade 5A, DK-1014 Copenhagen K, Denmark
| | - Amaya Azqueta
- Department of Pharmacology and Toxicology, School of Pharmacy and Nutrition, University of Navarra, C/Irunlarrea 1, 31009 Pamplona, Spain
| | - Adriana Rodriguez-Garraus
- Department of Pharmacology and Toxicology, School of Pharmacy and Nutrition, University of Navarra, C/Irunlarrea 1, 31009 Pamplona, Spain
| | - Tamara Bakuradze
- Food Chemistry and Toxicology, Department of Chemistry, RPTU Kaiserslautern-Landau, Erwin-Schroedinger-Str. 52, D-67663 Kaiserslautern, Germany
| | - Elke Richling
- Food Chemistry and Toxicology, Department of Chemistry, RPTU Kaiserslautern-Landau, Erwin-Schroedinger-Str. 52, D-67663 Kaiserslautern, Germany
| | - Ezgi Eyluel Bankoglu
- Institute of Pharmacology and Toxicology, University of Wuerzburg, Versbacher Str. 9, 97078 Wuerzburg, Germany
| | - Helga Stopper
- Institute of Pharmacology and Toxicology, University of Wuerzburg, Versbacher Str. 9, 97078 Wuerzburg, Germany
| | - Victoria Claudino Bastos
- Department of Pharmacology & Toxicology, School for Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Maastricht, The Netherlands
| | - Sabine A S Langie
- Department of Pharmacology & Toxicology, School for Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Maastricht, The Netherlands
| | - Annie Jensen
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade 5A, DK-1014 Copenhagen K, Denmark
| | - Sara Ristori
- Department of Neuroscience, Psychology, Pharmacology and Child Health (NEUROFARBA), Section Pharmacology and Toxicology, University of Florence, Florence, Italy
| | - Francesca Scavone
- Department of Neuroscience, Psychology, Pharmacology and Child Health (NEUROFARBA), Section Pharmacology and Toxicology, University of Florence, Florence, Italy
| | - Lisa Giovannelli
- Department of Neuroscience, Psychology, Pharmacology and Child Health (NEUROFARBA), Section Pharmacology and Toxicology, University of Florence, Florence, Italy
| | - Maria Wojewódzka
- Centre for Radiobiology and Biological Dosimetry, Institute of Nuclear Chemistry and Technology, Dorodna 16, 01-310 Warsaw, Poland
| | - Marcin Kruszewski
- Centre for Radiobiology and Biological Dosimetry, Institute of Nuclear Chemistry and Technology, Dorodna 16, 01-310 Warsaw, Poland
- Department of Molecular Biology and Translational Research, Institute of Rural Health, Jaczewskiego 2, 20-090 Lublin, Poland
| | - Vanessa Valdiglesias
- Universidade da Coruña, Grupo NanoToxGen, Centro Interdisciplinar de Química e Bioloxía - CICA, Departamento de Biología, A Coruña, Spain
- Instituto de Investigación Biomédica de A Coruña (INIBIC), A Coruña, Spain
| | - Blanca Laffon
- Instituto de Investigación Biomédica de A Coruña (INIBIC), A Coruña, Spain
- Universidade da Coruña, Grupo DICOMOSA, Centro Interdisciplinar de Química e Bioloxía - CICA, Departamento de Psicología, A Coruña, Spain
| | - Carla Costa
- Environmental Health Department, National Institute of Health, Porto, Portugal
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
- Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal
| | - Solange Costa
- Environmental Health Department, National Institute of Health, Porto, Portugal
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
- Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal
| | - João Paulo Teixeira
- Environmental Health Department, National Institute of Health, Porto, Portugal
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
- Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal
| | - Mirko Marino
- Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milan, Italy
| | - Cristian Del Bo
- Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milan, Italy
| | - Patrizia Riso
- Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milan, Italy
| | - Congying Zheng
- Department of Pharmacology & Toxicology, School for Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Maastricht, The Netherlands
- Department of Nutrition, University of Oslo, Oslo, Norway
| | | | - Andrew Collins
- Department of Nutrition, University of Oslo, Oslo, Norway
- NorGenotech AS, Oslo, Norway
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Vigašová K, Durdík M, Jakl L, Dolinská Z, Pobijaková M, Fekete M, Závacká I, Belyaev I, Marková E. Chemotherapy and cryopreservation affects DNA repair foci in lymphocytes of breast cancer patients. Int J Radiat Biol 2023; 99:1660-1668. [PMID: 37145321 DOI: 10.1080/09553002.2023.2211140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 04/20/2023] [Indexed: 05/06/2023]
Abstract
PURPOSE Although breast cancer (BC) patients benefit from radiotherapy (RT), some radiosensitive (RS) patients suffer from side effects caused by ionizing radiation in healthy tissues. It is thought that RS is underlaid by a deficiency in the repair of DNA double-strand breaks (DSB). DNA repair proteins such as p53-binding protein 1 (53BP1) and phosphorylated histone H2AX (γH2AX), form DNA repair foci at the DSB locations and thus serve as DSB biomarkers. Peripheral blood lymphocytes (PBL) are commonly believed to be an appropriate cell system for RS assessment using DNA repair foci. The amount of DSB may also be influenced by chemotherapy (CHT), which is often chosen as the first treatment modality before RT. As it is not always possible to analyze blood samples immediately after collection, there is a need for cryopreservation of PBL in liquid nitrogen. However, cryopreservation may potentially affect the number of DNA repair foci. In this work, we studied the effect of cryopreservation and CHT on the amount of DNA repair foci in PBL of BC patients undergoing radiotherapy. MATERIALS AND METHODS The effect of cryopreservation was studied by immunofluorescence analysis of 53BP1 and γH2AX proteins at different time intervals after in vitro irradiation. The effect of chemotherapy was analyzed by fluorescent labelling of 53BP1 and γH2AX proteins in PBL collected before, during, and after RT. RESULTS Higher number of primary 53BP1/γH2AX foci was observed in frozen cells indicating that cryopreservation affects the formation of DNA repair foci in PBL of BC patients. In CHT-treated patients, a higher number of foci were found before RT, but no differences were observed during and after the RT. CONCLUSIONS Cryopreservation is the method of choice for analyzing DNA repair residual foci, but only similarly treated and preserved cells should be used for comparison of primary foci. CHT induces DNA repair foci in PBL of BC patients, but this effect disappears during radiotherapy.
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Affiliation(s)
- Katarína Vigašová
- Department of Radiobiology, Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Matúš Durdík
- Department of Radiobiology, Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Lukáš Jakl
- Department of Radiobiology, Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Zuzana Dolinská
- Department of Radiation Oncology, Radiological Centrum, National Cancer Institute, Bratislava, Slovakia
| | - Margita Pobijaková
- Department of Radiation Oncology, Radiological Centrum, National Cancer Institute, Bratislava, Slovakia
| | - Marta Fekete
- Department of Radiation Oncology, Radiological Centrum, National Cancer Institute, Bratislava, Slovakia
| | - Ingrid Závacká
- Department of Radiation Oncology, Radiological Centrum, National Cancer Institute, Bratislava, Slovakia
| | - Igor Belyaev
- Department of Radiobiology, Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Eva Marková
- Department of Radiobiology, Cancer Research Institute, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovakia
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Mišík M, Staudinger M, Kundi M, Worel N, Nersesyan A, Ferk F, Dusinska M, Azqueta A, Møller P, Knasmueller S. Use of the Single Cell Gel Electrophoresis Assay for the Detection of DNA-protective Dietary Factors: Results of Human Intervention Studies. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2023; 791:108458. [PMID: 37031732 DOI: 10.1016/j.mrrev.2023.108458] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 03/14/2023] [Accepted: 04/06/2023] [Indexed: 04/11/2023]
Abstract
The single cell gel electrophoresis technique is based on the measurement of DNA migration in an electric field and enables to investigate via determination of DNA-damage the impact of foods and their constituents on the genetic stability. DNA-damage leads to adverse effects including cancer, neurodegenerative disorders and infertility. In the last 25 years approximately 90 human intervention trials have been published in which DNA-damage, formation of oxidized bases, alterations of the sensitivity towards reactive oxygen species and chemicals and of repair functions were investigated with this technique. In approximately 50% of the studies protective effects were observed. Pronounced protection was found with certain plant foods (spinach, kiwi fruits, onions), coffee, green tea, honey and olive oil. Also diets with increased contents of vegetables caused positive effects. Small amounts of certain phenolics (gallic acid, xanthohumol) prevented oxidative damage of DNA; with antioxidant vitamins and cholecalciferol protective effects were only detected after intake of doses that exceed the recommended daily uptake values. The evaluation of the quality of the studies showed that many have methodological shortcomings (lack of controls, no calibration of repair enzymes, inadequate control of the compliance and statistical analyses) which should be avoided in future investigations.
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Affiliation(s)
- Miroslav Mišík
- Center for Cancer Research, Medical University of Vienna, Borschkegasse 8a, A 1090 Vienna, Austria
| | - Marlen Staudinger
- Center for Cancer Research, Medical University of Vienna, Borschkegasse 8a, A 1090 Vienna, Austria
| | - Michael Kundi
- Center for Public Health, Department of Environmental Health, Medical University of Vienna, Vienna, Austria
| | - Nadine Worel
- Center for Cancer Research, Medical University of Vienna, Borschkegasse 8a, A 1090 Vienna, Austria
| | - Armen Nersesyan
- Center for Cancer Research, Medical University of Vienna, Borschkegasse 8a, A 1090 Vienna, Austria
| | - Franziska Ferk
- Center for Cancer Research, Medical University of Vienna, Borschkegasse 8a, A 1090 Vienna, Austria
| | - Maria Dusinska
- Health Effects Laboratory, Department of Environmental Chemistry, NILU-Norwegian Institute for Air Research, Instituttveien 18, 2002 Kjeller, Norway
| | - Amaya Azqueta
- Department of Pharmacology and Toxicology, University of Navarra, Pamplona, Spain
| | - Peter Møller
- Section of Environmental Health, Department of Public Health, University of Copenhagen, Denmark
| | - Siegfried Knasmueller
- Center for Cancer Research, Medical University of Vienna, Borschkegasse 8a, A 1090 Vienna, Austria.
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6
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Del Bo’ C, Tucci M, Martini D, Marino M, Bertoli S, Battezzati A, Porrini M, Riso P. Acute effect of blueberry intake on vascular function in older subjects: Study protocol for a randomized, controlled, crossover trial. PLoS One 2022; 17:e0275132. [PMID: 36454906 PMCID: PMC9714894 DOI: 10.1371/journal.pone.0275132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 08/18/2022] [Indexed: 12/03/2022] Open
Abstract
Aging is associated with an increased risk of developing cardiovascular disease which is often accompanied by a decline in vascular health and function. Current evidence suggests that berries may have a potential role in the modulation of vascular function, but dietary interventions are still needed to confirm findings, especially in older subjects. In the context of the MIND FoodS HUB project, this study aims to investigate the effect of a single serving of blueberry (250 g of blueberry versus a control product) in a group of older subjects (≥ 60y) through a randomized, controlled, cross-over dietary intervention trial. Specifically, the study evaluates the absorption kinetics of bioactives following the blueberries intake and the effects on markers related to oxidative stress, inflammation, and vascular function analyzed at different time points. By considering a drop-out rate estimate of 25%, at least 20 subjects will be recruited in the study. The study will provide evidence to support the potential beneficial effects of blueberry and its bioactive compounds on vascular function in a group of population more susceptible to vascular dysfunction and to the development of cardiovascular diseases. Moreover, the study will contribute the analysis of several metabolic and functional markers that can support the biological plausibility of the results obtained. Finally, the trial will provide data on the absorption and metabolism of blueberry bioactives which will be used to study their association with the different markers under study. Trail registration: The trial is registered at ISRCTN (http://isrctn.com/ISRCTN18262533); May 7, 2021.
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Affiliation(s)
- Cristian Del Bo’
- Division of Human Nutrition, Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, Milano, Italy
| | - Massimiliano Tucci
- Division of Human Nutrition, Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, Milano, Italy
| | - Daniela Martini
- Division of Human Nutrition, Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, Milano, Italy
| | - Mirko Marino
- Division of Human Nutrition, Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, Milano, Italy
| | - Simona Bertoli
- Division of Human Nutrition, Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, Milano, Italy
- International Center for the Assessment of Nutritional Status (ICANS), Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, Milano, Italy
| | - Alberto Battezzati
- Division of Human Nutrition, Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, Milano, Italy
- International Center for the Assessment of Nutritional Status (ICANS), Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, Milano, Italy
| | - Marisa Porrini
- Division of Human Nutrition, Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, Milano, Italy
| | - Patrizia Riso
- Division of Human Nutrition, Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, Milano, Italy
- * E-mail:
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7
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Bankoglu EE, Mukama T, Katzke V, Stipp F, Johnson T, Kühn T, Seyfried F, Godschalk R, Collins A, Kaaks R, Stopper H. Short- and long-term reproducibility of the COMET assay for measuring DNA damage biomarkers in frozen blood samples of the EPIC-Heidelberg cohort. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2022; 874-875:503442. [PMID: 35151425 DOI: 10.1016/j.mrgentox.2022.503442] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 12/17/2021] [Accepted: 01/10/2022] [Indexed: 06/14/2023]
Abstract
The comet assay is widely used for quantification of genomic damage in humans. Peripheral blood derived mononuclear cells (PBMCs) are the most often used cell type for this purpose. Since the comet assay can be performed in an enhanced throughput format, it can be applied to large sample collections such as biobanks. The European Prospective Investigation into Cancer and Nutrition (EPIC) study is one of the largest existing prospective cohort studies, and the German Cancer Research Institute (DKFZ) in Heidelberg is a participating center with 25.000 frozen blood samples stored from around 25 years ago, enabling retrospective assessment of disease risk factors. However, experience with decades long frozen samples in the comet assay is so far missing. In Heidelberg, 800 study participants were re-invited twice between 2010 and 2012 to donate further blood samples. Here, we analyzed 299 Heidelberg-EPIC samples, compiled from frozen PBMC and buffy coat preparations selected from the different sampling time points. In addition, 47 frozen PBMC samples from morbidly obese individuals were included. For buffy coat samples, we observed a poor correlation between DNA damage in the same donors assessed at two sampling time points. Additionally, no correlation between DNA damage in buffy coat samples and PBMCs was found. For PBMCs, a good correlation was observed between samples of the same donors at the two time points. DNA damage was not affected by age and smoking status, but high BMI (>30; obesity) was associated with increased DNA damage in PBMCs. There was no indication for a threshold of a certain BMI for increased DNA damage. In conclusion, while 25 year-long stored buffy coat preparations may require adaptation of certain experimental parameters such as cell density and electrophoresis conditions, frozen PBMC biobank samples can be analyzed in the comet assay even after a decade of storage.
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Affiliation(s)
- Ezgi Eyluel Bankoglu
- Institute of Pharmacology and Toxicology, University of Wuerzburg, Wuerzburg, Germany
| | - Trasias Mukama
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Verena Katzke
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Franzisca Stipp
- Institute of Pharmacology and Toxicology, University of Wuerzburg, Wuerzburg, Germany
| | - Theron Johnson
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Tilman Kühn
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany; Institute for Global Food Security, Queen's University Belfast, Belfast, BT9 5DL, UK
| | - Florian Seyfried
- Department of General, Vascular, Visceral and Paediatric Surgery, University Hospital of Wuerzburg, Wuerzburg, Germany
| | - Roger Godschalk
- Department of Pharmacology & Toxicology, School for Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Maastricht, the Netherlands
| | - Andrew Collins
- Department of Nutrition, University of Oslo, Oslo, Norway
| | - Rudolf Kaaks
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Helga Stopper
- Institute of Pharmacology and Toxicology, University of Wuerzburg, Wuerzburg, Germany.
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8
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Martini D, Domínguez-Perles R, Rosi A, Tassotti M, Angelino D, Medina S, Ricci C, Guy A, Oger C, Gigliotti L, Durand T, Marino M, Gottfried-Genieser H, Porrini M, Antonini M, Dei Cas A, Bonadonna RC, Ferreres F, Scazzina F, Brighenti F, Riso P, Del Bo’ C, Mena P, Gil-Izquierdo A, Del Rio D. Effect of Coffee and Cocoa-Based Confectionery Containing Coffee on Markers of DNA Damage and Lipid Peroxidation Products: Results from a Human Intervention Study. Nutrients 2021; 13:2399. [PMID: 34371907 PMCID: PMC8308525 DOI: 10.3390/nu13072399] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 07/07/2021] [Accepted: 07/10/2021] [Indexed: 12/28/2022] Open
Abstract
The effect of coffee and cocoa on oxidative damage to macromolecules has been investigated in several studies, often with controversial results. This study aimed to investigate the effect of one-month consumption of different doses of coffee or cocoa-based products containing coffee on markers of DNA damage and lipid peroxidation in young healthy volunteers. Twenty-one volunteers were randomly assigned into a three-arm, crossover, randomized trial. Subjects were assigned to consume one of the three following treatments: one cup of espresso coffee/day (1C), three cups of espresso coffee/day (3C), and one cup of espresso coffee plus two cocoa-based products containing coffee (PC) twice per day for 1 month. At the end of each treatment, blood samples were collected for the analysis of endogenous and H2O2-induced DNA damage and DNA oxidation catabolites, while urines were used for the analysis of oxylipins. On the whole, four DNA catabolites (cyclic guanosine monophosphate (cGMP), 8-OH-2'-deoxy-guanosine, 8-OH-guanine, and 8-NO2-cGMP) were detected in plasma samples following the one-month intervention. No significant modulation of DNA and lipid damage markers was documented among groups, apart from an effect of time for DNA strand breaks and some markers of lipid peroxidation. In conclusion, the consumption of coffee and cocoa-based confectionery containing coffee was apparently not able to affect oxidative stress markers. More studies are encouraged to better explain the findings obtained and to understand the impact of different dosages of these products on specific target groups.
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Affiliation(s)
- Daniela Martini
- Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milan, Italy; (D.M.); (L.G.); (M.M.); (M.P.); (P.R.)
| | - Raúl Domínguez-Perles
- Research Group on Quality, Safety, and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS-CSIC, Espinardo, 30100 Murcia, Spain; (R.D.-P.); (S.M.)
| | - Alice Rosi
- Human Nutrition Unit, Department of Food and Drugs, University of Parma, 43125 Parma, Italy; (A.R.); (M.T.); (F.S.); (F.B.); (D.D.R.)
| | - Michele Tassotti
- Human Nutrition Unit, Department of Food and Drugs, University of Parma, 43125 Parma, Italy; (A.R.); (M.T.); (F.S.); (F.B.); (D.D.R.)
| | - Donato Angelino
- Faculty of Bioscience and Technology for Food, Agriculture, and Environment, University of Teramo, 64100 Teramo, Italy;
| | - Sonia Medina
- Research Group on Quality, Safety, and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS-CSIC, Espinardo, 30100 Murcia, Spain; (R.D.-P.); (S.M.)
| | - Cristian Ricci
- Pediatric Epidemiology, Department of Pediatrics, University Medicine Leipzig, 04103 Leipzig, Germany;
| | - Alexandre Guy
- Institut des Biomolécules Max Mousseron, IBMM, University of Montpellier, CNRS, ENSCM, 34093 Montpellier, France; (A.G.); (C.O.); (T.D.)
| | - Camille Oger
- Institut des Biomolécules Max Mousseron, IBMM, University of Montpellier, CNRS, ENSCM, 34093 Montpellier, France; (A.G.); (C.O.); (T.D.)
| | - Letizia Gigliotti
- Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milan, Italy; (D.M.); (L.G.); (M.M.); (M.P.); (P.R.)
| | - Thierry Durand
- Institut des Biomolécules Max Mousseron, IBMM, University of Montpellier, CNRS, ENSCM, 34093 Montpellier, France; (A.G.); (C.O.); (T.D.)
| | - Mirko Marino
- Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milan, Italy; (D.M.); (L.G.); (M.M.); (M.P.); (P.R.)
| | | | - Marisa Porrini
- Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milan, Italy; (D.M.); (L.G.); (M.M.); (M.P.); (P.R.)
| | - Monica Antonini
- Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy; (M.A.); (A.D.C.); (R.C.B.)
| | - Alessandra Dei Cas
- Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy; (M.A.); (A.D.C.); (R.C.B.)
| | - Riccardo C. Bonadonna
- Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy; (M.A.); (A.D.C.); (R.C.B.)
| | - Federico Ferreres
- Department of Food Technology and Nutrition, Molecular Recognition and Encapsulation (REM) Group, Universidad Católica de Murcia, UCAM, 30107 Murcia, Spain;
| | - Francesca Scazzina
- Human Nutrition Unit, Department of Food and Drugs, University of Parma, 43125 Parma, Italy; (A.R.); (M.T.); (F.S.); (F.B.); (D.D.R.)
| | - Furio Brighenti
- Human Nutrition Unit, Department of Food and Drugs, University of Parma, 43125 Parma, Italy; (A.R.); (M.T.); (F.S.); (F.B.); (D.D.R.)
| | - Patrizia Riso
- Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milan, Italy; (D.M.); (L.G.); (M.M.); (M.P.); (P.R.)
| | - Cristian Del Bo’
- Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milan, Italy; (D.M.); (L.G.); (M.M.); (M.P.); (P.R.)
| | - Pedro Mena
- Human Nutrition Unit, Department of Food and Drugs, University of Parma, 43125 Parma, Italy; (A.R.); (M.T.); (F.S.); (F.B.); (D.D.R.)
| | - Angel Gil-Izquierdo
- Research Group on Quality, Safety, and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS-CSIC, Espinardo, 30100 Murcia, Spain; (R.D.-P.); (S.M.)
| | - Daniele Del Rio
- Human Nutrition Unit, Department of Food and Drugs, University of Parma, 43125 Parma, Italy; (A.R.); (M.T.); (F.S.); (F.B.); (D.D.R.)
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9
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Volobaev V, Bach S, Shchetnikova E, Vdovina E, Rosinskiy A, Larionov A. Short/long-term cryopreservation prior to comet assay of whole-blood leukocytes and in vitro-cultured lung fibroblasts. Toxicol Mech Methods 2021; 31:531-537. [PMID: 34016016 DOI: 10.1080/15376516.2021.1933286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Single-cell gel electrophoresis (comet assay) is a valuable test that can be used in ecotoxicological, epidemiological, and biomonitoring contexts. We assessed the effects of short- (without cryopreservation) and long-term (with cryopreservation) storage of DMEM-cultivated human peripheral blood leukocytes (HPBLs) and a human lung fibroblast cell line (FLECH-104) on comet assay results. Samples were stored for 6 or 24 h at room temperature (23°С) or 4 °C and frozen at -80 °C or -196 °C for 1, 2, or 4 weeks. Short-term storage led to significant increases in the comet tail intensity (TI) and Olive tail moment (OTM) in HPBL and FLECH-104 samples. Freezing FLECH-104 samples at -80°С and -196°С resulted in TI mean increases, with no differences in OTM. All frozen HPBL samples did not exhibit significant increases in TI or OTM, and instead exhibited a slight decrease in TI versus the control at both -80 °C and -196 °C. Increased frequency of highly damaged cells was observed in FLECH-104 and HPBL cultures during both short-term storage and after freezing, which may indicate a significant destructive effect. Therefore, freezing of cell cultures and whole blood according to our protocol is not recommended.
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Affiliation(s)
- V Volobaev
- Institute of Biology, Ecology and Natural Resources, Kemerovo State University, Kemerovo, Russian Federation
| | - S Bach
- Institute of Biology, Ecology and Natural Resources, Kemerovo State University, Kemerovo, Russian Federation
| | - E Shchetnikova
- Institute of Biology, Ecology and Natural Resources, Kemerovo State University, Kemerovo, Russian Federation
| | - E Vdovina
- Institute of Biology, Ecology and Natural Resources, Kemerovo State University, Kemerovo, Russian Federation
| | - A Rosinskiy
- Institute of Biology, Ecology and Natural Resources, Kemerovo State University, Kemerovo, Russian Federation
| | - A Larionov
- Institute of Biology, Ecology and Natural Resources, Kemerovo State University, Kemerovo, Russian Federation
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10
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Del Bo’ C, Martini D, Bernardi S, Gigliotti L, Marino M, Gargari G, Meroño T, Hidalgo-Liberona N, Andres-Lacueva C, Kroon PA, Cherubini A, Guglielmetti S, Porrini M, Riso P. Association between Food Intake, Clinical and Metabolic Markers and DNA Damage in Older Subjects. Antioxidants (Basel) 2021; 10:antiox10050730. [PMID: 34066373 PMCID: PMC8148130 DOI: 10.3390/antiox10050730] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 04/28/2021] [Accepted: 04/30/2021] [Indexed: 12/31/2022] Open
Abstract
The use of DNA damage as marker of oxidative stress, metabolic dysfunction and age-related diseases is debated. The present study aimed at assessing the level of DNA damage (evaluated as DNA strand-breaks, endogenous and oxidatively-induced DNA damage) in a group of older subjects with intestinal permeability enrolled within the MaPLE (Gut and Blood Microbiomics for Studying the Effect of a Polyphenol-Rich Dietary Pattern on Intestinal Permeability in the Elderly) intervention trial, to evaluate its association with clinical, metabolic and dietary markers. DNA damage in peripheral blood mononuclear cells was assessed by the comet assay in 49 older subjects participating in the study. Clinical and metabolic markers, markers of inflammation, vascular function and intestinal permeability were determined in serum. Food intake was estimated by weighted food diaries. On the whole, a trend towards higher levels of DNA damage was observed in men compared to women (p = 0.071). A positive association between DNA damage and clinical/metabolic markers (e.g., uric acid, lipid profile) and an inverse association with dietary markers (e.g., vitamin C, E, B6, folates) were found and differed based on sex. By considering the importance of DNA stability during aging, the results obtained on sex differences and the potential role of dietary and metabolic factors on DNA damage underline the need for further investigations in a larger group of older adults to confirm the associations found and to promote preventive strategies.
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Affiliation(s)
- Cristian Del Bo’
- Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milan, Italy; (C.D.B.); (D.M.); (S.B.); (L.G.); (M.M.); (G.G.); (S.G.)
| | - Daniela Martini
- Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milan, Italy; (C.D.B.); (D.M.); (S.B.); (L.G.); (M.M.); (G.G.); (S.G.)
| | - Stefano Bernardi
- Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milan, Italy; (C.D.B.); (D.M.); (S.B.); (L.G.); (M.M.); (G.G.); (S.G.)
| | - Letizia Gigliotti
- Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milan, Italy; (C.D.B.); (D.M.); (S.B.); (L.G.); (M.M.); (G.G.); (S.G.)
| | - Mirko Marino
- Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milan, Italy; (C.D.B.); (D.M.); (S.B.); (L.G.); (M.M.); (G.G.); (S.G.)
| | - Giorgio Gargari
- Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milan, Italy; (C.D.B.); (D.M.); (S.B.); (L.G.); (M.M.); (G.G.); (S.G.)
| | - Tomas Meroño
- Biomarkers and Nutrimetabolomics Laboratory, Department of Nutrition, Food Sciences and Gastronomy, XIA, INSA, CIBERFES-ISCIII, 08028 Barcelona, Spain; (T.M.); (N.H.-L.); (C.A.-L.)
- Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain
| | - Nicole Hidalgo-Liberona
- Biomarkers and Nutrimetabolomics Laboratory, Department of Nutrition, Food Sciences and Gastronomy, XIA, INSA, CIBERFES-ISCIII, 08028 Barcelona, Spain; (T.M.); (N.H.-L.); (C.A.-L.)
- Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain
| | - Cristina Andres-Lacueva
- Biomarkers and Nutrimetabolomics Laboratory, Department of Nutrition, Food Sciences and Gastronomy, XIA, INSA, CIBERFES-ISCIII, 08028 Barcelona, Spain; (T.M.); (N.H.-L.); (C.A.-L.)
- Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain
| | - Paul A. Kroon
- Quadram Institute Bioscience, Norwich Research Park, Norwich NR4 7UG, UK;
| | - Antonio Cherubini
- Geriatria, Accettazione Geriatrica e Centro di ricerca per l’invecchiamento, IRCCS INRCA, 60127 Ancona, Italy;
| | - Simone Guglielmetti
- Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milan, Italy; (C.D.B.); (D.M.); (S.B.); (L.G.); (M.M.); (G.G.); (S.G.)
| | - Marisa Porrini
- Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milan, Italy; (C.D.B.); (D.M.); (S.B.); (L.G.); (M.M.); (G.G.); (S.G.)
- Correspondence: (M.P.); (P.R.); Tel.: +39-02-50316720 (M.P.); +39-02-50316726 (P.R.)
| | - Patrizia Riso
- Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133 Milan, Italy; (C.D.B.); (D.M.); (S.B.); (L.G.); (M.M.); (G.G.); (S.G.)
- Correspondence: (M.P.); (P.R.); Tel.: +39-02-50316720 (M.P.); +39-02-50316726 (P.R.)
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11
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Salivary leucocytes as suitable biomatrix for the comet assay in human biomonitoring studies. Arch Toxicol 2021; 95:2179-2187. [PMID: 33787950 PMCID: PMC8009925 DOI: 10.1007/s00204-021-03038-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 03/25/2021] [Indexed: 10/29/2022]
Abstract
Peripheral blood leucocytes (PBL) have been traditionally used to investigate DNA damage by the comet assay in population studies, but validating alternative non-invasive samples would expand the application of this assay in human biomonitoring. The objectives of this study were (i) to test the validity of salivary leucocytes as a proper biomatrix for the comet assay, (ii) to evaluate the ability of this approach to detect different types of primary and oxidative DNA damage, and (iii) to determine whether frozen salivary leucocytes are still suitable for displaying those types of DNA damage. Fresh and frozen leucocytes isolated from saliva samples (six healthy non-smoking volunteers), were exposed to four genotoxic agents inducing different types of DNA damage, both primary (methyl methanesulfonate, actinomycin-D, ultraviolet radiation) and oxidative (potassium bromate), and standard or enzyme-modified comet assay was conducted. Results were compared with those obtained from PBL. Cells exposed to the four genotoxic agents showed dose-dependent increases of primary and oxidative DNA damage, demonstrating the suitability of all these samples to detect genetic damage from different origin. When comparing baseline levels of DNA damage, just a slight significant increase in primary DNA damage was observed in frozen salivary leucocytes regarding the other biomatrices, but similar results were obtained regarding sensitivity to DNA damage induction by all agents tested. This study demonstrates that salivary leucocytes can be employed in comet assay as an alternative or complement to blood samples. Frozen salivary leucocytes were proved to be a very convenient sample in large biomonitoring studies.
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12
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Møller P, Bankoglu EE, Stopper H, Giovannelli L, Ladeira C, Koppen G, Gajski G, Collins A, Valdiglesias V, Laffon B, Boutet-Robinet E, Perdry H, Del Bo' C, Langie SAS, Dusinska M, Azqueta A. Collection and storage of human white blood cells for analysis of DNA damage and repair activity using the comet assay in molecular epidemiology studies. Mutagenesis 2021; 36:193-212. [PMID: 33755160 DOI: 10.1093/mutage/geab012] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 03/22/2021] [Indexed: 01/08/2023] Open
Abstract
DNA damage and repair activity are often assessed in blood samples from humans in different types of molecular epidemiology studies. However, it is not always feasible to analyse the samples on the day of collection without any type of storage. For instance, certain studies use repeated sampling of cells from the same subject or samples from different subjects collected at different time-points, and it is desirable to analyse all these samples in the same comet assay experiment. In addition, flawless comet assay analyses on frozen samples open up the possibility of using this technique on biobank material. In this article we discuss the use of cryopreserved peripheral blood mononuclear cells (PBMCs), buffy coat (BC) and whole blood (WB) for analysis of DNA damage and repair using the comet assay. The published literature and the authors' experiences indicate that various types of blood samples can be cryopreserved with only a minor effect on the basal level of DNA damage. There is evidence to suggest that WB and PBMCs can be cryopreserved for several years without much effect on the level of DNA damage. However, care should be taken when cryopreserving WB and BCs. It is possible to use either fresh or frozen samples of blood cells, but results from fresh and frozen cells should not be used in the same dataset. The article outlines detailed protocols for the cryopreservation of PBMCs, BCs and WB samples.
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Affiliation(s)
- Peter Møller
- Section of Environmental Health, Department of Public Health, University of Copenhagen, Øster Farimagsgade 5A, DK-1014 Copenhagen K, Denmark
| | - Ezgi Eyluel Bankoglu
- Institute of Pharmacology and Toxicology, University of Wuerzburg, Versbacher Str. 9, 97078 Wuerzburg, Germany
| | - Helga Stopper
- Institute of Pharmacology and Toxicology, University of Wuerzburg, Versbacher Str. 9, 97078 Wuerzburg, Germany
| | - Lisa Giovannelli
- Department NEUROFARBA, University of Florence, Viale G. Pieraccini 6, 50139 Florence, Italy
| | - Carina Ladeira
- H&TRC - Health & Technology Research Center, Escola Superior de Tecnologia da Saúde (ESTeSL), Instituto Politécnico de Lisboa, Avenida D. João II, lote 4.69.01, Parque das Nações, 1990-096 Lisboa, Portugal.,NOVA National School of Public Health, Public Health Research Centre, Universidade NOVA de Lisboa, Lisbon, Portugal.,Comprehensive Health Research Center (CHRC), Universidade NOVA de Lisboa, Portugal
| | | | - Goran Gajski
- Mutagenesis Unit, Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10000 Zagreb, Croatia
| | - Andrew Collins
- Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, Sognsvannsveien 9, 0372 Oslo, Norway
| | - Vanessa Valdiglesias
- Grupo DICOMOSA, Centro de Investigaciones Científicas Avanzadas (CICA), Departamento de Biología, Facultad de Ciencias, Universidade da Coruña, Campus A Zapateira s/n, 15071, A Coruña, Spain.,Instituto de Investigación Biomédica de A Coruña (INIBIC), AE CICA-INIBIC, Oza, 15071 A Coruña, Spain
| | - Blanca Laffon
- Instituto de Investigación Biomédica de A Coruña (INIBIC), AE CICA-INIBIC, Oza, 15071 A Coruña, Spain.,Grupo DICOMOSA, Centro de Investigaciones Científicas Avanzadas (CICA), Departamento de Psicología, Facultad de Ciencias de la Educación, Universidade da Coruña, Campus Elviña s/n, 15071, A Coruña, Spain
| | - Elisa Boutet-Robinet
- Toxalim (Research Centre in Food Toxicology), Université de Toulouse, INRAE, ENVT, INP-Purpan, UPS, Toulouse, France
| | - Hervé Perdry
- Université Paris-Saclay, UVSQ, Inserm, CESP, 94807, Villejuif, France
| | - Cristian Del Bo'
- Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Via Celoria 2, 20133, Milan, Italy
| | - Sabine A S Langie
- School of Nutrition and Translational Research in Metabolism, Department of Pharmacology and Toxicology, University of Maastricht, Universiteitssingel 50, 6200 MD, Maastricht, The Netherlands
| | - Maria Dusinska
- Environmental Chemistry Department, Health Effects Laboratory, NILU - Norwegian Institute for Air Research, 2027 Kjeller, Norway
| | - Amaya Azqueta
- Department of Pharmacology and Toxicology, University of Navarra, C/Irunlarrea 1, 31008 Pamplona, Spain.,IdiSNA, Navarra Institute for Health Research, C/Irunlarrea 3, 31008 Pamplona, Spain
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13
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Møller P, Stopper H, Collins AR. Measurement of DNA damage with the comet assay in high-prevalence diseases: current status and future directions. Mutagenesis 2021; 35:5-18. [PMID: 31294794 DOI: 10.1093/mutage/gez018] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 06/19/2019] [Indexed: 12/12/2022] Open
Abstract
The comet assay is widely used in studies on genotoxicity testing, human biomonitoring and clinical studies. The simple version of the assay detects a mixture of DNA strand breaks and alkali-labile sites; these lesions are typically described as DNA strand breaks to distinguish them from oxidatively damaged DNA that are measured with the enzyme-modified comet assay. This review assesses the association between high-prevalence diseases in high-income countries and DNA damage measured with the comet assay in humans. The majority of case-control studies have assessed genotoxicity in white blood cells. Patients with coronary artery disease, diabetes, kidney disease, chronic obstructive pulmonary disease and Alzheimer's disease have on average 2-fold higher levels of DNA strand breaks compared with healthy controls. Patients with coronary artery disease, diabetes, kidney disease and chronic obstructive pulmonary disease also have 2- to 3-fold higher levels of oxidatively damaged DNA in white blood cells than controls, although there is not a clear difference in DNA damage levels between the different diseases. Case-control studies have shown elevated levels of DNA strand breaks in patients with breast cancer, whereas there are only few studies on colorectal and lung cancers. At present, it is not possible to assess if these neoplastic diseases are associated with a different level of DNA damage compared with non-neoplastic diseases.
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Affiliation(s)
- Peter Møller
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Copenhagen H, Denmark
| | - Helga Stopper
- Institute of Pharmacology and Toxicology, University of Wuerzburg, Wuerzburg, Germany
| | - Andrew R Collins
- Department of Nutrition, Institute for Basic Medical Sciences, University of Oslo, Oslo, Norway
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Marino M, Gigliotti L, Møller P, Riso P, Porrini M, Del Bo C. Impact of 12-month cryopreservation on endogenous DNA damage in whole blood and isolated mononuclear cells evaluated by the comet assay. Sci Rep 2021; 11:363. [PMID: 33432000 PMCID: PMC7801598 DOI: 10.1038/s41598-020-79670-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Accepted: 12/07/2020] [Indexed: 11/17/2022] Open
Abstract
The comet assay is an electrophoretic technique used to assess DNA damage, as a marker of genotoxicity and oxidative stress, in tissues and biological samples including peripheral blood mononuclear cells (PBMCs) and whole blood (WB). Although numerous studies are performed on stored samples, the impact of cryopreservation on artifactual formation of DNA damage is not widely considered. The present study aims to evaluate the impact of storage at different time-points on the levels of strand breaks (SBs) and formamidopyrimidine DNA glycosylase (Fpg)-sensitive sites in isolated PBMCs and WB. Samples were collected, aliquoted and stored at − 80 °C. DNA damage was analyzed on fresh samples, and subsequently on frozen samples every 2 months up to a year. Results have shown no changes in DNA damage in samples of PBMCs and WB stored for up to 4 months, while a significant increase in SBs and Fpg-sensitive sites was documented starting from 6-month up to 12-month storage of both the samples. In addition, fresh and frozen WB showed higher basal levels of DNA damage compared to PBMCs. In conclusion, WB samples show high levels of DNA damage compared to PBMCs. One-year of storage increased the levels of SBs and Fpg-sensitive sites especially in the WB samples. Based on these findings, the use of short storage times and PBMCs should be preferred because of low background level of DNA damage in the comet assay.
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Affiliation(s)
- Mirko Marino
- Division of Human Nutrition, Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133, Milan, Italy
| | - Letizia Gigliotti
- Division of Human Nutrition, Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133, Milan, Italy
| | - Peter Møller
- Department of Public Health, Section of Environmental Health, University of Copenhagen, 1014, Copenhagen K, Denmark
| | - Patrizia Riso
- Division of Human Nutrition, Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133, Milan, Italy
| | - Marisa Porrini
- Division of Human Nutrition, Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133, Milan, Italy
| | - Cristian Del Bo
- Division of Human Nutrition, Department of Food, Environmental and Nutritional Sciences (DeFENS), Università degli Studi di Milano, 20133, Milan, Italy.
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Del Bo' C, Bernardi S, Cherubini A, Porrini M, Gargari G, Hidalgo-Liberona N, González-Domínguez R, Zamora-Ros R, Peron G, Marino M, Gigliotti L, Winterbone MS, Kirkup B, Kroon PA, Andres-Lacueva C, Guglielmetti S, Riso P. A polyphenol-rich dietary pattern improves intestinal permeability, evaluated as serum zonulin levels, in older subjects: The MaPLE randomised controlled trial. Clin Nutr 2020; 40:3006-3018. [PMID: 33388204 DOI: 10.1016/j.clnu.2020.12.014] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 12/02/2020] [Accepted: 12/12/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND & AIM Increased intestinal permeability (IP) can occur in older people and contribute to the activation of the immune system and inflammation. Dietary interventions may represent a potential strategy to reduce IP. In this regard, specific food bioactives such as polyphenols have been proposed as potential IP modulator due to their ability to affect several critical targets and pathways that control IP. The trial aimed to test the hypothesis that a polyphenol-rich dietary pattern can decrease serum zonulin levels, an IP surrogate marker involved in tight junction modulation, and can beneficially alter the intestinal microbiota, and IP-associated biochemical and clinical markers in older subjects. METHODS A randomised, controlled, cross-over intervention trial was performed. Sixty-six subjects (aged ≥ 60 y) with increased IP based on serum zonulin levels, were randomly allocated to one of the two arms of the intervention consisting of a control diet (C-diet) vs. a polyphenol-rich diet (PR-diet). Each intervention was 8-week long and separated by an 8-week wash out period. At the beginning and at the end of each intervention period, serum samples were collected for the quantification of zonulin and other biological markers. Faecal samples were also collected to investigate the intestinal microbial ecosystem. In addition, anthropometrical/physical/biochemical parameters and food intake were evaluated. RESULTS Fifty-one subjects successfully completed the intervention and a high compliance to the dietary protocols was demonstrated. Overall, polyphenol intake significantly increased from a mean of 812 mg/day in the C diet to 1391 mg/day in the PR-diet. Two-way analysis of variance showed a significant effect of treatment (p = 0.008) and treatment × time interaction (p = 0.025) on serum zonulin levels, which decreased after the 8-week PR-diet. In addition, a treatment × time interaction was observed showing a reduction of diastolic blood pressure (p = 0.028) following the PR-diet, which was strongest in those not using antihypertensive drugs. A decrease in both diastolic (p = 0.043) and systolic blood pressure (p = 0.042) was observed in women. Interestingly, a significant increase in fibre-fermenting and butyrate-producing bacteria such as the family Ruminococcaceae and members of the genus Faecalibacterium was observed following the PR intervention. The efficacy of this dietary intervention was greater in subjects with higher serum zonulin at baseline, who showed more pronounced alterations in the markers under study. Furthermore, zonulin reduction was also stronger among subjects with higher body mass index and with insulin resistance at baseline, thus demonstrating the close interplay between IP and metabolic features. CONCLUSIONS These data show, for the first time, that a PR-diet can reduce serum zonulin levels, an indirect marker of IP. In addition, PR-diet reduced blood pressure and increased fibre-fermenting and butyrate-producing bacteria. These findings may represent an initial breakthrough for further intervention studies evaluating possible dietary treatments for the management of IP, inflammation and gut function in different target populations. THIS STUDY WAS REGISTERED AT WWW.ISRCTN. ORG AS ISRCTN10214981.
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Affiliation(s)
- Cristian Del Bo'
- Università, degli Studi di Milano, Department of Food, Environmental and Nutritional Sciences (DeFENS), 20133 Milan, Italy
| | - Stefano Bernardi
- Università, degli Studi di Milano, Department of Food, Environmental and Nutritional Sciences (DeFENS), 20133 Milan, Italy
| | - Antonio Cherubini
- Geriatria, Accettazione Geriatrica e Centro di Ricerca per l'Invecchiamento, IRCCS INRCA, 60127 Ancona, Italy
| | - Marisa Porrini
- Università, degli Studi di Milano, Department of Food, Environmental and Nutritional Sciences (DeFENS), 20133 Milan, Italy
| | - Giorgio Gargari
- Università, degli Studi di Milano, Department of Food, Environmental and Nutritional Sciences (DeFENS), 20133 Milan, Italy
| | - Nicole Hidalgo-Liberona
- Biomarkers and Nutrimetabolomics Laboratory, Department of Nutrition, Food Sciences and Gastronomy, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028, Barcelona, Spain; CIBER de Fragilidad y Envejecimiento Saludable (CIBERfes), Instituto de Salud Carlos III, 08028 Barcelona, Spain
| | - Raúl González-Domínguez
- Biomarkers and Nutrimetabolomics Laboratory, Department of Nutrition, Food Sciences and Gastronomy, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028, Barcelona, Spain; CIBER de Fragilidad y Envejecimiento Saludable (CIBERfes), Instituto de Salud Carlos III, 08028 Barcelona, Spain
| | - Raul Zamora-Ros
- Biomarkers and Nutrimetabolomics Laboratory, Department of Nutrition, Food Sciences and Gastronomy, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028, Barcelona, Spain; Unit of Nutrition and Cancer, Cancer Epidemiology Research Programme, Catalan Institute of Oncology (ICO), Bellvitge Biomedical Research Institute (IDIBELL), Spain
| | - Gregorio Peron
- Biomarkers and Nutrimetabolomics Laboratory, Department of Nutrition, Food Sciences and Gastronomy, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028, Barcelona, Spain; CIBER de Fragilidad y Envejecimiento Saludable (CIBERfes), Instituto de Salud Carlos III, 08028 Barcelona, Spain
| | - Mirko Marino
- Università, degli Studi di Milano, Department of Food, Environmental and Nutritional Sciences (DeFENS), 20133 Milan, Italy
| | - Letizia Gigliotti
- Università, degli Studi di Milano, Department of Food, Environmental and Nutritional Sciences (DeFENS), 20133 Milan, Italy
| | - Mark S Winterbone
- Quadram Institute Bioscience, Norwich Research Park, Norwich NR4 7UQ, United Kingdom
| | - Benjamin Kirkup
- Quadram Institute Bioscience, Norwich Research Park, Norwich NR4 7UQ, United Kingdom
| | - Paul A Kroon
- Quadram Institute Bioscience, Norwich Research Park, Norwich NR4 7UQ, United Kingdom
| | - Cristina Andres-Lacueva
- Biomarkers and Nutrimetabolomics Laboratory, Department of Nutrition, Food Sciences and Gastronomy, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028, Barcelona, Spain; CIBER de Fragilidad y Envejecimiento Saludable (CIBERfes), Instituto de Salud Carlos III, 08028 Barcelona, Spain
| | - Simone Guglielmetti
- Università, degli Studi di Milano, Department of Food, Environmental and Nutritional Sciences (DeFENS), 20133 Milan, Italy
| | - Patrizia Riso
- Università, degli Studi di Milano, Department of Food, Environmental and Nutritional Sciences (DeFENS), 20133 Milan, Italy.
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Application of the comet assay in human biomonitoring: An hCOMET perspective. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2019; 783:108288. [PMID: 32192646 DOI: 10.1016/j.mrrev.2019.108288] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 10/29/2019] [Accepted: 11/07/2019] [Indexed: 12/29/2022]
Abstract
The comet assay is a well-accepted biomonitoring tool to examine the effect of dietary, lifestyle, environmental and occupational exposure on levels of DNA damage in human cells. With such a wide range of determinants for DNA damage levels, it becomes challenging to deal with confounding and certain factors are inter-related (e.g. poor nutritional intake may correlate with smoking status). This review describes the effect of intrinsic (i.e. sex, age, tobacco smoking, occupational exposure and obesity) and extrinsic (season, environmental exposures, diet, physical activity and alcohol consumption) factors on the level of DNA damage measured by the standard or enzyme-modified comet assay. Although each factor influences at least one comet assay endpoint, the collective evidence does not indicate single factors have a large impact. Thus, controlling for confounding may be necessary in a biomonitoring study, but none of the factors is strong enough to be regarded a priori as a confounder. Controlling for confounding in the comet assay requires a case-by-case approach. Inter-laboratory variation in levels of DNA damage and to some extent also reproducibility in biomonitoring studies are issues that have haunted the users of the comet assay for years. Procedures to collect specimens, and their storage, are not standardized. Likewise, statistical issues related to both sample-size calculation (before sampling of specimens) and statistical analysis of the results vary between studies. This review gives guidance to statistical analysis of the typically complex exposure, co-variate, and effect relationships in human biomonitoring studies.
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The roles of reactive oxygen species and antioxidants in cryopreservation. Biosci Rep 2019; 39:BSR20191601. [PMID: 31371631 PMCID: PMC6712439 DOI: 10.1042/bsr20191601] [Citation(s) in RCA: 102] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 07/29/2019] [Accepted: 07/30/2019] [Indexed: 12/16/2022] Open
Abstract
Cryopreservation has facilitated advancement of biological research by allowing the storage of cells over prolonged periods of time. While cryopreservation at extremely low temperatures would render cells metabolically inactive, cells suffer insults during the freezing and thawing process. Among such insults, the generation of supra-physiological levels of reactive oxygen species (ROS) could impair cellular functions and survival. Antioxidants are potential additives that were reported to partially or completely reverse freeze-thaw stress-associated impairments. This review aims to discuss the potential sources of cryopreservation-induced ROS and the effectiveness of antioxidant administration when used individually or in combination.
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Møller P, Jensen A, Løhr M, Eriksen L, Grønbæk M, Loft S. Fish and salad consumption are inversely associated with levels of oxidatively damaged DNA in a Danish adult cohort. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2019; 843:66-72. [DOI: 10.1016/j.mrgentox.2018.11.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 10/26/2018] [Accepted: 11/17/2018] [Indexed: 01/06/2023]
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Odongo GA, Skatchkov I, Herz C, Lamy E. Optimization of the alkaline comet assay for easy repair capacity quantification of oxidative DNA damage in PBMC from human volunteers using aphidicolin block. DNA Repair (Amst) 2019; 77:58-64. [DOI: 10.1016/j.dnarep.2019.03.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 01/18/2019] [Indexed: 01/13/2023]
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20
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Milić M, Ožvald I, Vinković Vrček I, Vučić Lovrenčić M, Oreščanin V, Bonassi S, Del Castillo ER. Alkaline comet assay results on fresh and one-year frozen whole blood in small volume without cryo-protection in a group of people with different health status. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2019; 843:3-10. [PMID: 31421735 DOI: 10.1016/j.mrgentox.2019.03.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 03/25/2019] [Accepted: 03/27/2019] [Indexed: 10/27/2022]
Abstract
Using alkaline comet assay, DNA damage tail length (TL) and tail intensity (TI) parameters were compared between fresh whole blood and 1-year frozen small volume whole blood in EDTA at -80 °C without cryo-preservation. The studied group consisted of 25 volunteers with different health conditions who served as their own controls for frozen blood results. Without the purification step after thawing, the results and the usefulness of this protocol for future/retrospective (including re-analysations of putative outliers) studies were analysed. Medical surveillance and blood sampling were done at Merkur University Hospital Zagreb. No significant differences between fresh and frozen blood samples in terms of the mean TL values (mean ± SD: 29.03 ± 12.26 vs. 25.36 ± 6.97, respectively) and the mean TI values (9.19 ± 10.37 vs. 10.17 ± 8.55, respectively), and highly damaged cell percentage were determined among 25 volunteers. Median TI frozen samples values of entire group were within the allowed 10-11% (8.24). At the individual levels, no correlation between fresh and frozen whole blood samples was observed in 11 volunteers who suffered from diabetes mellitus type 2. Strong correlation between fresh/frozen samples was seen for TL (r = 0.64, p < 0.015) and TI (r = 0.71, p < 0.005) in nondiabetic subgroup. Overall, the results demonstrated the usefulness of the 1-year frozen blood without induction of heavily damaged DNA. Due to the different DNA damage behaviour connected with different health conditions, future studies should involve more volunteers, oxidative DNA damage comet assay measurements, the inclusion of a washing step after thawing and inclusion of disease/antioxidant biomarkers.
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Affiliation(s)
- Mirta Milić
- Mutagenesis Unit, Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10 000, Zagreb, Croatia.
| | - Ivan Ožvald
- Special Hospital For Extended Treatment of Duga Resa, Josefa Jeruzalema 7, 47250, Duga Resa, Croatia.
| | - Ivana Vinković Vrček
- Analytical Toxicology and Mineral Metabolism Unit, Institute for Medical Research and Occupational Health, Ksaverska cesta 2, 10 000, Zagreb, Croatia.
| | - Marijana Vučić Lovrenčić
- Department of Laboratory Medicine, Merkur University Hospital, Zajčeva 19, 10000, Zagreb, Croatia.
| | | | - Stefano Bonassi
- Unit of Clinical and Molecular Epidemiology, IRCCS San Raffaele Pisana, 00166, Rome, Italy; Department of Human Sciences and Quality of Life Promotion, San Raffaele University, 00166, Rome, Italy.
| | - Emilio Rojas Del Castillo
- Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510, Mexico, Mexico.
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21
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The comet assay for human biomonitoring: Effect of cryopreservation on DNA damage in different blood cell preparations. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2019; 843:11-17. [PMID: 31421731 DOI: 10.1016/j.mrgentox.2019.02.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 02/12/2019] [Accepted: 02/13/2019] [Indexed: 11/24/2022]
Abstract
This study was designed within the frame of the COST Action hCOMET 15132 (Working Group 6), with the aim of comparing different peripheral blood cell preparations for their feasibility in human biomonitoring studies, using the comet assay for the evaluation of DNA damage. Basal levels of strand breaks/ALS and formamidopyrimidine DNA glycosylase (Fpg) - sites, and H2O2 (500 μM)-induced strand breaks, were measured in whole blood, peripheral blood mononuclear cells - lymphocytes and monocytes - and buffy coat; in fresh and 1, 4 and 12 weeks-frozen samples. The comparison among the fresh preparations showed that the basal levels of DNA damage were all very low and similar in the three samples. Frozen whole blood samples stored in cryostraws without cryoprotection showed similar basal levels of DNA damage as fresh samples, indicating that this preparation, often chosen for biobanks, resists efficiently freezing/thawing artifacts. However, long-term storage of frozen buffy coat samples in cryostraws and with no cryopreservative did not appear feasible. Storage up to 3 months of frozen cryoprotected peripheral blood mononuclear cells induced small increases in basal strand breaks and no other statistically significant modification. Altogether, this study suggests that whole blood could be the most suitable sample to be used to perform comet assay in human epidemiological biomonitoring for genotoxicity assessment in frozen samples, such as those stored in biobanks.
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22
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Bessa MJ, Brandão F, Querido MM, Costa C, Pereira CC, Valdiglesias V, Laffon B, Carriere M, Teixeira JP, Fraga S. Optimization of the harvesting and freezing conditions of human cell lines for DNA damage analysis by the alkaline comet assay. Mutat Res 2018; 845:402994. [PMID: 31561887 DOI: 10.1016/j.mrgentox.2018.12.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 12/06/2018] [Accepted: 12/09/2018] [Indexed: 10/27/2022]
Abstract
The comet assay is a commonly used method for in vitro and in vivo genotoxicity assessment. This versatile assay can be performed in a wide range of tissues and cell types. Although most of the studies use samples immediately processed after collection, frozen biological samples can also be used. The present study aimed to optimize a collection and freezing protocol to minimize the DNA damage associated with these procedures in human cell line samples for comet assay analysis. This study was conducted in glial A172 and lung alveolar epithelial A549 cells. Two cell detachment methods (mechanical vs enzymatic) and two cryoprotective media [FBS + 10% DMSO vs Cell Culture Media (CCM) + 10% DMSO] were tested, and DNA damage assessed at four time points following storage at -80 °C (one, two, four and eight weeks). In both cell lines, no differences in % tail intensity were detected between fresh and frozen cells up to eight weeks, irrespective of the harvesting method and freezing medium used. However, freshly isolated A172 cells exhibited a significant lower DNA damage when resuspended in CCM + 10% DMSO, while for A549 fresh cells the preferable harvesting method was the enzymatic one since it induced less DNA damage. Although both harvesting methods and cryoprotective media tested were found suitable, our data indicate that enzymatic harvesting and cryopreservation in CCM + 10% DMSO is a preferable method for DNA integrity preservation of human cell line samples for comet assay analysis. Our data also suggest that CCM is a preferable and cost-effective alternative to FBS in cryopreservation media. This optimized protocol allows the analysis of in vitro cell samples collected and frozen at different locations, with minimal interference on the basal DNA strand break levels in samples kept frozen up to eight weeks.
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Affiliation(s)
- Maria João Bessa
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Instituto Nacional de Saúde Dr. Ricardo Jorge, Departamento de Saúde Ambiental, Porto, Portugal.
| | - Fátima Brandão
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Instituto Nacional de Saúde Dr. Ricardo Jorge, Departamento de Saúde Ambiental, Porto, Portugal.
| | - Micaela Machado Querido
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Instituto Nacional de Saúde Dr. Ricardo Jorge, Departamento de Saúde Ambiental, Porto, Portugal.
| | - Carla Costa
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Instituto Nacional de Saúde Dr. Ricardo Jorge, Departamento de Saúde Ambiental, Porto, Portugal.
| | - Cristiana Costa Pereira
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Instituto Nacional de Saúde Dr. Ricardo Jorge, Departamento de Saúde Ambiental, Porto, Portugal.
| | - Vanessa Valdiglesias
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Universidade da Coruña, DICOMOSA Group, Department of Psychology, Area of Psychobiology, Coruña, Spain.
| | - Blanca Laffon
- Universidade da Coruña, DICOMOSA Group, Department of Psychology, Area of Psychobiology, Coruña, Spain.
| | - Marie Carriere
- Université Grenoble-Alpes, CEA, CNRS, INAC-SyMMES, Chimie Interface Biologie pour l'Environnement, la Santé et la Toxicologie (CIBEST), France.
| | - João Paulo Teixeira
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Instituto Nacional de Saúde Dr. Ricardo Jorge, Departamento de Saúde Ambiental, Porto, Portugal.
| | - Sónia Fraga
- EPIUnit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal; Instituto Nacional de Saúde Dr. Ricardo Jorge, Departamento de Saúde Ambiental, Porto, Portugal.
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23
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Møller P. The comet assay: ready for 30 more years. Mutagenesis 2018; 33:1-7. [PMID: 29325088 DOI: 10.1093/mutage/gex046] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 12/18/2017] [Indexed: 01/01/2023] Open
Abstract
During the last 30 years, the comet assay has become widely used for the measurement of DNA damage and repair in cells and tissues. A landmark achievement was reached in 2016 when the Organization for Economic Co-operation and Development adopted a comet assay guideline for in vivo testing of DNA strand breaks in animals. However, the comet assay has much more to offer than being an assay for testing DNA strand breaks in animal organs. The use of repair enzymes increases the range of DNA lesions that can be detected with the assay. It can also be modified to measure DNA repair activity. Still, despite the long-term use of the assay, there is a need for studies that assess the impact of variation in specific steps of the procedure. This is particularly important for the on-going efforts to decrease the variation between experiments and laboratories. The articles in this Special Issue of Mutagenesis cover important technical issues of the comet assay procedure, nanogenotoxicity and ionising radiation sensitivity on plant cells. The included biomonitoring studies have assessed seasonal variation and certain predictors for the basal level of DNA damage in white blood cells. Lastly, the comet assay has been used in studies on genotoxicity of environmental and occupational exposures in human biomonitoring studies and animal models. Overall, the articles in this Special Issue demonstrate the versatility of the comet assay and they hold promise that the assay is ready for the next 30 years.
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Affiliation(s)
- Peter Møller
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade, Copenhagen K, Denmark
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24
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Are Raw Brassica Vegetables Healthier Than Cooked Ones? A Randomized, Controlled Crossover Intervention Trial on the Health-Promoting Potential of Ethiopian Kale. Nutrients 2018; 10:nu10111622. [PMID: 30400138 PMCID: PMC6266411 DOI: 10.3390/nu10111622] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 10/22/2018] [Accepted: 10/23/2018] [Indexed: 12/15/2022] Open
Abstract
The present human intervention trial investigated the health-promoting potential of B. carinata, with a focus on effects of thermal processing on bioactivity. Twenty-two healthy subjects consumed a B. carinata preparation from raw (allyl isothiocyanate-containing) or cooked (no allyl isothiocyanate) leaves for five days in a randomized crossover design. Peripheral blood mononuclear cells were exposed to aflatoxin B1 (AFB1), with or without metabolic activation using human S9 mix, and subsequently analyzed for DNA damage using the comet assay. Plasma was analyzed for total antioxidant capacity and prostaglandin E₂ (PGE₂) levels. Cooked B. carinata significantly reduced DNA damage induced by AFB1 as compared to baseline levels (+S9 mix: 35%, -S9 mix: 33%, p ≤ 0.01, respectively). Raw B. carinata only reduced DNA damage by S9-activated AFB1 by 21% (p = 0.08). PGE₂ plasma levels were significantly reduced in subjects after consuming raw B. carinata. No changes in plasma antioxidant capacity were detectable. A balanced diet, including raw and cooked Brassica vegetables, might be suited to fully exploit the health-promoting potential. These results also advocate the promotion of B. carinata cultivation in Eastern Africa as a measure to combat effects of unavoidable aflatoxin exposure.
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Silva S, Costa EM, Veiga M, Morais RM, Calhau C, Pintado M. Health promoting properties of blueberries: a review. Crit Rev Food Sci Nutr 2018; 60:181-200. [PMID: 30373383 DOI: 10.1080/10408398.2018.1518895] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
With the strengthening of the link between diet and health, several foodstuffs have emerged as possessing potential health benefits such as phenolic rich fruits and vegetables. Blueberries, along with other berries, given their flavonoid and antioxidant content have long since been considered as a particularly interesting health promoting fruit. Therefore, the present work aimed to compile the existing evidences regarding the various potential benefits of blueberry and blueberry based products consumption, giving particular relevance to in vivo works and epidemiological studies whenever available. Overall, the results demonstrate that, while the evidences that support a beneficial role of blueberry and blueberry extracts consumption, further human based studies are still needed.
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Affiliation(s)
- Sara Silva
- CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Porto, Portugal
| | - Eduardo M Costa
- CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Porto, Portugal
| | - Mariana Veiga
- CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Porto, Portugal
| | - Rui M Morais
- CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Porto, Portugal
| | - Conceição Calhau
- Nutrição e Metabolismo, NOVA Medical School, Universidade Nova de Lisboa, Lisboa, Portugal.,CINTESIS, Centro de Investigação em Tecnologias e Serviços de Saúde, Universidade do Porto, Portugal
| | - Manuela Pintado
- CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa/Porto, Porto, Portugal
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Mena P, Tassotti M, Martini D, Rosi A, Brighenti F, Del Rio D. The Pocket-4-Life project, bioavailability and beneficial properties of the bioactive compounds of espresso coffee and cocoa-based confectionery containing coffee: study protocol for a randomized cross-over trial. Trials 2017; 18:527. [PMID: 29121975 PMCID: PMC5680745 DOI: 10.1186/s13063-017-2271-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 10/21/2017] [Indexed: 02/07/2023] Open
Abstract
Background Coffee is an important source of bioactive compounds, including caffeine, phenolic compounds (mainly chlorogenic acids), trigonelline, and diterpenes. Several studies have highlighted the preventive effects of coffee consumption on major cardiometabolic diseases, but the impact of coffee dosage on markers of cardiometabolic risk is not well understood. Moreover, the pool of coffee-derived circulating metabolites and the contribution of each metabolite to disease prevention still need to be evaluated in real-life settings. The aim of this study will be to define the bioavailability and beneficial properties of coffee bioactive compounds on the basis of different levels of consumption, by using an innovative experimental design. The contribution of cocoa-based products containing coffee to the pool of circulating metabolites and their putative bioactivity will also be investigated. Methods A three-arm, crossover, randomized trial will be conducted. Twenty-one volunteers will be randomly assigned to consume three treatments in a random order for 1 month: 1 cup of espresso coffee/day, 3 cups of espresso coffee/day, and 1 cup of espresso coffee plus 2 cocoa-based products containing coffee twice per day. The last day of each treatment, blood and urine samples will be collected at specific time points, up to 24 hours following the consumption of the first product. At the end of each treatment the same protocol will be repeated, switching the allocation group. Besides the bioavailability of the coffee/cocoa bioactive compounds, the effect of the coffee/cocoa consumption on several cardiometabolic risk factors (anthropometric measures, blood pressure, inflammatory markers, trimethylamine N-oxide, nitric oxide, blood lipids, fasting indices of glucose/insulin metabolism, DNA damage, eicosanoids, and nutri-metabolomics) will be investigated. Discussion Results will provide information on the bioavailability of the main groups of phytochemicals in coffee and on their modulation by the level of consumption. Findings will also show the circulating metabolites and their bioactivity when coffee consumption is substituted with the intake of cocoa-based products containing coffee. Finally, the effect of different levels of 1-month coffee consumption on cardiometabolic risk factors will be elucidated, likely providing additional insights on the role of coffee in the protection against chronic diseases. Trial registration ClinicalTrials.gov, NCT03166540. Registered on May 21, 2017. Electronic supplementary material The online version of this article (doi:10.1186/s13063-017-2271-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Pedro Mena
- Human Nutrition Unit, Department of Food and Drugs, University of Parma, Medical School Building C, Via Volturno, 39, 43125, Parma, Italy.
| | - Michele Tassotti
- Human Nutrition Unit, Department of Food and Drugs, University of Parma, Medical School Building C, Via Volturno, 39, 43125, Parma, Italy
| | - Daniela Martini
- Human Nutrition Unit, Department of Food and Drugs, University of Parma, Medical School Building C, Via Volturno, 39, 43125, Parma, Italy
| | - Alice Rosi
- Human Nutrition Unit, Department of Food and Drugs, University of Parma, Medical School Building C, Via Volturno, 39, 43125, Parma, Italy
| | - Furio Brighenti
- Human Nutrition Unit, Department of Food and Drugs, University of Parma, Medical School Building C, Via Volturno, 39, 43125, Parma, Italy
| | - Daniele Del Rio
- Human Nutrition Unit, Department of Food and Drugs, University of Parma, Medical School Building C, Via Volturno, 39, 43125, Parma, Italy
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Møller P, Jantzen K, Løhr M, Andersen MH, Jensen DM, Roursgaard M, Danielsen PH, Jensen A, Loft S. Searching for assay controls for the Fpg- and hOGG1-modified comet assay. Mutagenesis 2017; 33:9-19. [DOI: 10.1093/mutage/gex015] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 09/05/2017] [Indexed: 11/14/2022] Open
Affiliation(s)
- Peter Møller
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade, Copenhagen K, Denmark
| | - Kim Jantzen
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade, Copenhagen K, Denmark
| | - Mille Løhr
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade, Copenhagen K, Denmark
| | - Maria Helena Andersen
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade, Copenhagen K, Denmark
| | - Ditte Marie Jensen
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade, Copenhagen K, Denmark
| | - Martin Roursgaard
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade, Copenhagen K, Denmark
| | - Pernille Høgh Danielsen
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade, Copenhagen K, Denmark
| | - Annie Jensen
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade, Copenhagen K, Denmark
| | - Steffen Loft
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Øster Farimagsgade, Copenhagen K, Denmark
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Key Issues Related to Cryopreservation and Storage of Stem Cells and Cancer Stem Cells: Protecting Biological Integrity. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 951:1-12. [PMID: 27837550 DOI: 10.1007/978-3-319-45457-3_1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Cryopreservation and biobanking of stem cells are becoming increasingly important as stem cell technology and application attract the interest of industry, academic research, healthcare and patient organisations. Stem cell are already being used in the treatment of some diseases and it is anticipated that stem cell therapy will play a central role in future medicine. Similarly, the discovery of both hematopoietic and solid tumor stem cells and their clinical relevance have profoundly altered paradigms for cancer research as the cancer stem cells are considered promising new targets against cancer. Consequently, long-term cryopreservation and banking of normal and malignant stem cells is crucial and will inevitably become a routine procedure that requires highly regulated and safe methods of specimen storage. There is, however, an increasing amount of evidence showing contradictory results on the impact of cryopreservation and thawing of stem cells, including extensive physical and biological stresses, apoptosis and necrosis, mitochondrial injuries, changes to basal respiration and ATP production, cellular structural damage, telomere shortening and cellular senescence, and DNA damage and oxidative stress. Notably, cell surface proteins that play a major role in stem cell fate and are used as the biomarkers of stem cells are more vulnerable to cold stress than other proteins. There are also data supporting the alteration in some biological features and genetic integrity at the molecular level of the post-thawed stem cells. This article reviews the current and future challenges of cryopreservation of stem cells and stresses the need for further rigorous research on the methodologies for freezing and utilizing cancer stem cells following long-term storage.
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De Benedetti S, Lucchini G, Del Bò C, Deon V, Marocchi A, Penco S, Lunetta C, Gianazza E, Bonomi F, Iametti S. Blood trace metals in a sporadic amyotrophic lateral sclerosis geographical cluster. Biometals 2017; 30:355-365. [PMID: 28337565 DOI: 10.1007/s10534-017-0011-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 03/18/2017] [Indexed: 11/28/2022]
Abstract
Amyotrophic lateral sclerosis (ALS) is a fatal disorder with unknown etiology, in which genetic and environmental factors interplay to determine the onset and the course of the disease. Exposure to toxic metals has been proposed to be involved in the etiology of the disease either through a direct damage or by promoting oxidative stress. In this study we evaluated the concentration of a panel of metals in serum and whole blood of a small group of sporadic patients, all living in a defined geographical area, for which acid mine drainage has been reported. ALS prevalence in this area is higher than in the rest of Italy. Results were analyzed with software based on artificial neural networks. High concentrations of metals (in particular Se, Mn and Al) were associated with the disease group. Arsenic serum concentration resulted lower in ALS patients, but it positively correlated with disease duration. Comet assay was performed to evaluate endogenous DNA damage that resulted not different between patients and controls. Up to now only few studies considered geographically well-defined clusters of ALS patients. Common geographical origin among patients and controls gave us the chance to perform metallomic investigations under comparable conditions of environmental exposure. Elaboration of these data with software based on machine learning processes has the potential to be extremely useful to gain a comprehensive view of the complex interactions eventually leading to disease, even in a small number of subjects.
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Affiliation(s)
- Stefano De Benedetti
- Department of Food, Environmental and Nutritional Sciences (DEFENS), Division of Chemical and Biomolecular Sciences, University of Milan, 20133, Milan, Italy
| | - Giorgio Lucchini
- Department of Agricultural and Environmental Sciences (DiSAA), University of Milan, 20133, Milan, Italy
| | - Cristian Del Bò
- Department of Food, Environmental and Nutritional Sciences (DEFENS), Division of Human Nutrition, University of Milan, 20133, Milan, Italy
| | - Valeria Deon
- Department of Food, Environmental and Nutritional Sciences (DEFENS), Division of Human Nutrition, University of Milan, 20133, Milan, Italy
| | - Alessandro Marocchi
- Medical Genetics Unit, Department of Laboratory Medicine, Niguarda Ca' Granda Hospital, 20162, Milan, Italy
| | - Silvana Penco
- Medical Genetics Unit, Department of Laboratory Medicine, Niguarda Ca' Granda Hospital, 20162, Milan, Italy
| | - Christian Lunetta
- Neuromuscular Omnicentre (NEMO), Fondazione Serena Onlus, Niguarda Ca' Granda Hospital, 20162, Milan, Italy
| | - Elisabetta Gianazza
- Laboratory of Biochemistry and Computational Biophysics, Department of Pharmacological and Biomolecular Sciences (DiSFeB), University of Milan, Via G. Balzaretti 9, 20133, Milan, Italy
| | - Francesco Bonomi
- Department of Food, Environmental and Nutritional Sciences (DEFENS), Division of Chemical and Biomolecular Sciences, University of Milan, 20133, Milan, Italy.
| | - Stefania Iametti
- Department of Food, Environmental and Nutritional Sciences (DEFENS), Division of Chemical and Biomolecular Sciences, University of Milan, 20133, Milan, Italy
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Izquierdo-Vega JA, Morales-González JA, SánchezGutiérrez M, Betanzos-Cabrera G, Sosa-Delgado SM, Sumaya-Martínez MT, Morales-González Á, Paniagua-Pérez R, Madrigal-Bujaidar E, Madrigal-Santillán E. Evidence of Some Natural Products with Antigenotoxic Effects. Part 1: Fruits and Polysaccharides. Nutrients 2017; 9:nu9020102. [PMID: 28157162 PMCID: PMC5331533 DOI: 10.3390/nu9020102] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Accepted: 01/19/2017] [Indexed: 02/07/2023] Open
Abstract
Cancer is one of the leading causes of deaths worldwide. The agents capable of causing damage to genetic material are known as genotoxins and, according to their mode of action, are classified into mutagens, carcinogens or teratogens. Genotoxins are involved in the pathogenesis of several chronic degenerative diseases including hepatic, neurodegenerative and cardiovascular disorders, diabetes, arthritis, cancer, chronic inflammation and ageing. In recent decades, researchers have found novel bioactive phytocompounds able to counteract the effects of physical and chemical mutagens. Several studies have shown potential antigenotoxicity in a variety of fruits. In this review (Part 1), we present an overview of research conducted on some fruits (grapefruit, cranberries, pomegranate, guava, pineapple, and mango) which are frequentl consumed by humans, as well as the analysis of some phytochemicals extracted from fruits and yeasts which have demonstrated antigenotoxic capacity in various tests, including the Ames assay, sister chromatid exchange, chromosomal aberrations, micronucleus and comet assay.
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Affiliation(s)
- Jeannett Alejandra Izquierdo-Vega
- Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo, Ex-Hacienda de la Concepción, Tilcuautla, Pachuca de Soto 42080, Hidalgo, México.
| | - José Antonio Morales-González
- Escuela Superior de Medicina, Instituto Politécnico Nacional, Unidad Casco de Santo Tomas, Plan de San Luis y Díaz Mirón s/n, México D.F. 11340, México.
| | - Manuel SánchezGutiérrez
- Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo, Ex-Hacienda de la Concepción, Tilcuautla, Pachuca de Soto 42080, Hidalgo, México.
| | - Gabriel Betanzos-Cabrera
- Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo, Ex-Hacienda de la Concepción, Tilcuautla, Pachuca de Soto 42080, Hidalgo, México.
| | - Sara M Sosa-Delgado
- Escuela Superior de Medicina, Instituto Politécnico Nacional, Unidad Casco de Santo Tomas, Plan de San Luis y Díaz Mirón s/n, México D.F. 11340, México.
| | - María Teresa Sumaya-Martínez
- Secretaría de Investigación y Estudios de Posgrado, Universidad Autónoma de Nayarit, Ciudad de la Cultura Amado Nervo. Boulevard Tepic-Xalisco s/n, Tepic 28000, Nayarit, México.
| | - Ángel Morales-González
- Escuela Superior de Cómputo, Instituto Politécnico Nacional, Unidad A. López Mateos, Av. Juan de Dios Bátiz. Col., Lindavista, México D.F. 07738, Mexico.
| | - Rogelio Paniagua-Pérez
- Laboratorio de Bioquímica Muscular, Instituto Nacional de Rehabilitación, Av. México-Xochimilco. Col., Arenal de Guadalupe, México D.F. 14389, México.
| | - Eduardo Madrigal-Bujaidar
- Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, Unidad A. López-Mateos, Av. Wilfrido Massieu s/n, Lindavista, México D.F. 07738, México.
| | - Eduardo Madrigal-Santillán
- Escuela Superior de Medicina, Instituto Politécnico Nacional, Unidad Casco de Santo Tomas, Plan de San Luis y Díaz Mirón s/n, México D.F. 11340, México.
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Li J, Ma L, Wang X, Li D, Zeng Q, Xing X, Li C, Xie L, Chen L, Chen W, Zhang A. Modifications of H3K9me2, H3K36me3 and H4K20me2 may be involved in arsenic-induced genetic damage. Toxicol Res (Camb) 2016; 5:1380-1387. [PMID: 30090442 DOI: 10.1039/c6tx00117c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 06/19/2016] [Indexed: 12/16/2022] Open
Abstract
Endemic arsenic poisoning is a worldwide disease and many studies show that arsenic has obvious genetic toxicity. However, the mechanism of arsenic-induced genetic damage is unclear. In this study, coal-fired arsenic poisoning patients in the Guizhou Province, China, were selected as research subjects. Through an analysis of the relationship between genetic damage and histone modification levels and by comparing the control and arsenic poisoning groups, further analysis of their relationship was carried out, the aim being to explore the role of histone modification in arsenic-induced genetic damage. The result shows that arsenic may inhibit the modification level of H4K20me2 and H3K9me2, and increase the modification of H3K36me3, involved in the repair of DNA damage induced by arsenic. This study could provide a new pathway for studies of the genetic toxicity of arsenic.
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Affiliation(s)
- Jun Li
- Key Laboratory of Environmental Pollution Monitoring and Disease Control , Ministry of Education , Department of Toxicology , School of Public Health , Guiyang Medical University , Guiyang 550025 , China . ; Tel: +86-851-86780815
| | - Lu Ma
- Key Laboratory of Environmental Pollution Monitoring and Disease Control , Ministry of Education , Department of Toxicology , School of Public Health , Guiyang Medical University , Guiyang 550025 , China . ; Tel: +86-851-86780815
| | - Xilan Wang
- Key Laboratory of Environmental Pollution Monitoring and Disease Control , Ministry of Education , Department of Toxicology , School of Public Health , Guiyang Medical University , Guiyang 550025 , China . ; Tel: +86-851-86780815
| | - Daochuan Li
- Department of Toxicology , Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment , School of Public Health , Sun Yat-sen University , Guangzhou 510080 , China . ; ; Tel: +86-20-87330599
| | - Qibing Zeng
- Key Laboratory of Environmental Pollution Monitoring and Disease Control , Ministry of Education , Department of Toxicology , School of Public Health , Guiyang Medical University , Guiyang 550025 , China . ; Tel: +86-851-86780815
| | - Xiumei Xing
- Department of Toxicology , Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment , School of Public Health , Sun Yat-sen University , Guangzhou 510080 , China . ; ; Tel: +86-20-87330599
| | - Chenggui Li
- Key Laboratory of Environmental Pollution Monitoring and Disease Control , Ministry of Education , Department of Toxicology , School of Public Health , Guiyang Medical University , Guiyang 550025 , China . ; Tel: +86-851-86780815
| | - Lang Xie
- Key Laboratory of Environmental Pollution Monitoring and Disease Control , Ministry of Education , Department of Toxicology , School of Public Health , Guiyang Medical University , Guiyang 550025 , China . ; Tel: +86-851-86780815
| | - Li Chen
- Key Laboratory of Environmental Pollution Monitoring and Disease Control , Ministry of Education , Department of Toxicology , School of Public Health , Guiyang Medical University , Guiyang 550025 , China . ; Tel: +86-851-86780815
| | - Wen Chen
- Department of Toxicology , Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment , School of Public Health , Sun Yat-sen University , Guangzhou 510080 , China . ; ; Tel: +86-20-87330599
| | - Aihua Zhang
- Key Laboratory of Environmental Pollution Monitoring and Disease Control , Ministry of Education , Department of Toxicology , School of Public Health , Guiyang Medical University , Guiyang 550025 , China . ; Tel: +86-851-86780815
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Del Bo' C, Porrini M, Campolo J, Parolini M, Lanti C, Klimis-Zacas D, Riso P. A single blueberry (Vaccinium corymbosum) portion does not affect markers of antioxidant defence and oxidative stress in healthy volunteers following cigarette smoking. Mutagenesis 2015; 31:215-24. [PMID: 26602318 DOI: 10.1093/mutage/gev079] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We previously reported that a portion of blueberries reversed endothelial dysfunction induced by acute cigarette smoking. Since smoking-induced endothelial dysfunction is associated with a condition of oxidative stress, we evaluated whether the observed effect was mediated by modulation of markers of oxidative stress and antioxidant defence. Fourteen out of 16 male healthy smokers previously enrolled, participated in a three-armed randomized controlled study with the following experimental conditions: smoking treatment (one cigarette); blueberry treatment (300g of blueberries) + smoking (one cigarette); control treatment (300ml of water with sugar) + smoking (one cigarette). The cigarette was smoked 100min after blueberry/control/water consumption. Each treatment was separated by 1 week of washout period. Plasma vitamin (C, B12 and folate) and aminothiol concentrations, endogenous [formamidopyrimidine-DNA glycosylase (FPG)-sensitive sites] and oxidatively induced DNA damage (resistance to H2O2-induced DNA damage) in peripheral blood mononuclear cells (PBMCs) were measured at baseline and 20, 60, 90, 120min and 24h after smoking. On the whole, analysis of variance did not show a significant effect of treatment on the modulation of markers of oxidative stress and antioxidant defence but revealed an effect of time for plasma concentrations of vitamin C (P = 0.003), B12 (P < 0.001), folate (P < 0.001), total cysteine (P = 0.007) and cysteine-glycine (P = 0.010) that increased following the three treatments after smoking. No significant effect of treatment was observed for the levels of FPG-sensitive sites (P > 0.05) and H2O2-induced DNA damage (P > 0.05) in PBMCs. In conclusion, the consumption of a single blueberry portion failed to modulate markers of oxidative stress and antioxidant defence investigated in our experimental conditions. Further studies are necessary to elucidate this finding and help clarifying the mechanisms of protection of blueberries against smoking-induced endothelial dysfunction.
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Affiliation(s)
| | | | - Jonica Campolo
- CNR Institute of Clinical Physiology, Cardiothoracic and Vascular Department, Niguarda Ca' Granda Hospital, Piazzale Ospedale Maggiore 3, 20162 Milan, Italy
| | - Marina Parolini
- CNR Institute of Clinical Physiology, Cardiothoracic and Vascular Department, Niguarda Ca' Granda Hospital, Piazzale Ospedale Maggiore 3, 20162 Milan, Italy
| | | | - Dorothy Klimis-Zacas
- Department of Food Science and Human Nutrition, University of Maine, 232 Hitchner Hall, Orono, ME 04469, USA
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Araldi RP, de Melo TC, Mendes TB, de Sá Júnior PL, Nozima BHN, Ito ET, de Carvalho RF, de Souza EB, de Cassia Stocco R. Using the comet and micronucleus assays for genotoxicity studies: A review. Biomed Pharmacother 2015; 72:74-82. [DOI: 10.1016/j.biopha.2015.04.004] [Citation(s) in RCA: 128] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Accepted: 04/03/2015] [Indexed: 12/20/2022] Open
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