1
|
Fenech M, Holland N, Zeiger E, Chang PW, Kirsch-Volders M, Bolognesi C, Stopper H, Knudsen LE, Knasmueller S, Nersesyan A, Thomas P, Dhillon V, Deo P, Franzke B, Andreassi MG, Laffon B, Wagner KH, Norppa H, da Silva J, Volpi EV, Wilkins R, Bonassi S. Objectives and achievements of the HUMN project on its 26th anniversary. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2024; 794:108511. [PMID: 39233049 DOI: 10.1016/j.mrrev.2024.108511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 08/22/2024] [Accepted: 08/26/2024] [Indexed: 09/06/2024]
Abstract
Micronuclei (MN) are a nuclear abnormality that occurs when chromosome fragments or whole chromosomes are not properly segregated during mitosis and consequently are excluded from the main nuclei and wrapped within nuclear membrane to form small nuclei. This maldistribution of genetic material leads to abnormal cellular genomes which may increase risk of developmental defects, cancers, and accelerated aging. Despite the potential importance of MN as biomarkers of genotoxicity, very little was known about the optimal way to measure MN in humans, the normal ranges of values of MN in healthy humans and the prospective association of MN with developmental and degenerative diseases prior to the 1980's. In the early 1980's two important methods to measure MN in humans were developed namely, the cytokinesis-block MN (CBMN) assay using peripheral blood lymphocytes and the Buccal MN assay that measures MN in epithelial cells from the oral mucosa. These discoveries greatly increased interest to use MN assays in human studies. In 1997 the Human Micronucleus (HUMN) project was founded to initiate an international collaboration to (i) harmonise and standardise the techniques used to perform the lymphocyte CBMN assay and the Buccal MN assay; (ii) establish and collate databases of MN frequency in human populations world-wide which also captured demographic, lifestyle and environmental genotoxin exposure data and (iii) use these data to identify the most important variables affecting MN frequency and to also determine whether MN predict disease risk. In this paper we briefly describe the achievements of the HUMN project during the period from the date of its foundation on 9th September 1997 until its 26th Anniversary in 2023, which included more than 200 publications and 23 workshops world-wide.
Collapse
Affiliation(s)
- Michael Fenech
- Health and Biomedical Innovation, UniSA Clinical and Health Sciences, University of South Australia, Adelaide 5000, Australia; Genome Health Foundation, North Brighton, SA 5048, Australia.
| | - Nina Holland
- Center for Environmental Research and Community Health (CERCH), University of California, Berkeley, Berkeley, CA, USA.
| | | | - Peter Wushou Chang
- Show Chwan Memorial Hospital, Changhwa, Taiwan; TUFTS University Medical School, Boston, USA.
| | - Micheline Kirsch-Volders
- Laboratory for Cell Genetics, Department Biology, Faculty of Sciences and Bio-engineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, Brussels 1050, Belgium.
| | - Claudia Bolognesi
- Environmental Carcinogenesis Unit, Ospedale Policlinico San Martino, Genoa, Italy.
| | - Helga Stopper
- Institute of Pharmacology and Toxicology, University of Würzburg, Würzburg 97080, Germany.
| | - Lisbeth E Knudsen
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Copenhagen, Denmark.
| | - Siegfried Knasmueller
- Institute of Cancer Research, Department of Medicine I, Medical University of Vienna, Vienna, Austria.
| | - Armen Nersesyan
- Institute of Cancer Research, Department of Medicine I, Medical University of Vienna, Vienna, Austria.
| | - Philip Thomas
- CSIRO Health and Biosecurity, Adelaide 5000, Australia.
| | - Varinderpal Dhillon
- Health and Biomedical Innovation, UniSA Clinical and Health Sciences, University of South Australia, Adelaide 5000, Australia.
| | - Permal Deo
- Health and Biomedical Innovation, UniSA Clinical and Health Sciences, University of South Australia, Adelaide 5000, Australia.
| | - Bernhard Franzke
- Department of Nutritional Sciences, University of Vienna, Austria.
| | | | - Blanca Laffon
- Universidade da Coruña, Grupo DICOMOSA, CICA-Centro Interdisciplinar de Química e Bioloxía, Departamento de Psicología, Facultad de Ciencias de la Educación, and Instituto de Investigación Biomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario de A Coruña (CHUAC), Sergas, A Coruña, Spain.
| | - Karl-Heinz Wagner
- Department of Nutritional Sciences, University of Vienna, Austria; Research Platform Active Ageing, University of Vienna, Austria.
| | - Hannu Norppa
- Finnish Institute of Occupational Health, Helsinki 00250, Finland.
| | - Juliana da Silva
- Laboratory of Genetic Toxicology, La Salle University (UniLaSalle), Canoas, RS 92010-000, Brazil; PPGBM, Federal University of Brazil (UFRGS), Porto Alegre 91501-970, Brazil.
| | - Emanuela V Volpi
- School of Life Sciences, University of Westminster, 115 New Cavendish Street, London W1W6UW, UK.
| | - Ruth Wilkins
- Environmental and Radiation Health Sciences Directorate, Health Canada 775 Brookfield Rd, Ottawa K1A 1C1, Canada.
| | - Stefano Bonassi
- Clinical and Molecular Epidemiology, IRCCS San Raffaele Roma, Rome 00166, Italy.
| |
Collapse
|
2
|
Caponio VCA, Silva FFVE, Popolo F, Giugliano S, Spizzirri F, Lorenzo-Pouso AI, Padín-Iruegas ME, Zhurakivska K, Muzio LL, López-Pintor RM. State of art of micronuclei assay in exfoliative cytology as a clinical biomarker of genetic damage in oral carcinogenesis: A systematic review and meta-analysis. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2024; 794:108508. [PMID: 38964629 DOI: 10.1016/j.mrrev.2024.108508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 04/11/2024] [Accepted: 06/22/2024] [Indexed: 07/06/2024]
Abstract
Oral squamous cell carcinoma (OSCC) is the most common oral malignancy, often preceded by oral potentially malignant disorders (OPMDs). Currently, no clinical biomarker exists to predict malignancy, necessitating OPMD follow-up. Habits and environmental factors, such as smoking, and alcohol consumption, influence OSCC onset. Increased micronuclei (MNs) formation has been observed in the development of OSCC. Non-invasive diagnostic tests like exfoliative cytology offer painless and regular monitoring options. This study evaluates the impact of tobacco, alcohol, and pesticide exposure on MNs occurrence in exfoliative cytology-collected oral mucosal cells, assessing their potential as non-invasive biomarker for OSCC development prediction and monitoring in high-risk patients. Despite results from this meta-analysis supporting the existence of a stepwise increase from controls to patients with OPMD to OSCC, the translation of these findings into clinical practice is limited due to intra- and inter-individual heterogeneity, as well as methodological variability in MNs quantification. Various factors contribute to this heterogeneity, including demographic variables, methodological variability of different laboratories, staining techniques, sample collection location, and patient characteristics. All these points were discussed to provide further insights and improve standardization for future studies.
Collapse
Affiliation(s)
- Vito Carlo Alberto Caponio
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia 71122, Italy; ORALMED Research Group, Department of Dental Clinical Specialties, School of Dentistry, Complutense University, Madrid 28040, Spain
| | - Fábio França-Vieira E Silva
- Oral Medicine, Oral Surgery and Implantology Unit (MedOralRes), Faculty of Medicine and Dentistry, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain; ORALRES Group, Health Research Institute of Santiago de Compostela (FIDIS), Santiago de Compostela 15782, Spain.
| | - Francesco Popolo
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia 71122, Italy
| | - Sara Giugliano
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia 71122, Italy
| | - Francesca Spizzirri
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia 71122, Italy
| | - Alejandro I Lorenzo-Pouso
- Oral Medicine, Oral Surgery and Implantology Unit (MedOralRes), Faculty of Medicine and Dentistry, Universidade de Santiago de Compostela, Santiago de Compostela 15782, Spain
| | - María Elena Padín-Iruegas
- Human Anatomy and Embryology Area, Department of Functional Biology and Health Sciences, University of Vigo, Vigo 36310, Spain
| | - Khrystyna Zhurakivska
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia 71122, Italy
| | - Lorenzo Lo Muzio
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia 71122, Italy
| | - Rosa María López-Pintor
- ORALMED Research Group, Department of Dental Clinical Specialties, School of Dentistry, Complutense University, Madrid 28040, Spain
| |
Collapse
|
3
|
Dhillon VS, Deo P, Fenech M. Low magnesium in conjunction with high homocysteine increases DNA damage in healthy middle aged Australians. Eur J Nutr 2024:10.1007/s00394-024-03449-0. [PMID: 38864865 DOI: 10.1007/s00394-024-03449-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Accepted: 05/14/2024] [Indexed: 06/13/2024]
Abstract
PURPOSE Magnesium is one of the most common elements in the human body and plays an important role as a cofactor of enzymes required for DNA replication and repair and many other biochemical mechanisms including sensing and regulating one-carbon metabolism deficiencies. Low intake of magnesium can increase the risk of many diseases, in particular, chronic degenerative disorders. However, its role in prevention of DNA damage has not been studied fully in humans so far. Therefore, we tested the hypothesis that magnesium deficiency either on its own or in conjunction with high homocysteine (Hcy) induces DNA damage in vivo in humans. METHODS The present study was carried out in 172 healthy middle aged subjects from South Australia. Blood levels of magnesium, Hcy, folate and vitamin B12 were measured. Cytokinesis-Block Micronucleus cytome assay was performed to measure three DNA damage biomarkers: micronuclei (MN), nucleoplasmic bridges (NPBs) and nuclear buds (NBuds) in peripheral blood lymphocytes. RESULTS Data showed that magnesium and Hcy are significantly inversely correlated with each other (r = - 0.299, p < 0.0001). Furthermore, magnesium is positively correlated both with folate (p = 0.002) and vitamin B12 (p = 0.007). Magnesium is also significantly inversely correlated with MN (p < 0.0001) and NPB (p < 0.0001). Individuals with low magnesium and high Hcy exhibited significantly higher frequency of MN and NPBs compared to those with high magnesium and low Hcy (p < 0.0001). Furthermore, there was an interactive effect between these two factors as well in inducing MN (p = 0.01) and NPB (p = 0.048). CONCLUSIONS The results obtained in the present study indicate for the first time that low in vivo levels of magnesium either on its own or in the presence of high Hcy increases DNA damage as evident by higher frequencies of MN and NPBs.
Collapse
Affiliation(s)
- Varinderpal S Dhillon
- Health and Biomedical Innovation, UniSA Clinical and Health Sciences, University of South Australia, Adelaide, 5000, Australia.
| | - Permal Deo
- Health and Biomedical Innovation, UniSA Clinical and Health Sciences, University of South Australia, Adelaide, 5000, Australia
| | - Michael Fenech
- Health and Biomedical Innovation, UniSA Clinical and Health Sciences, University of South Australia, Adelaide, 5000, Australia
- Genome Health Foundation, North Brighton, 5048, Australia
| |
Collapse
|
4
|
Naser H, Munn K, Lawrence R, Wright R, Grewal E, Williams L, Doak S, Jenkins G. Human plasma can modulate micronucleus frequency in TK6 and OE33 cells in vitro. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2024; 896:503766. [PMID: 38821668 DOI: 10.1016/j.mrgentox.2024.503766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 05/06/2024] [Accepted: 05/13/2024] [Indexed: 06/02/2024]
Abstract
In this paper, we studied the potential genotoxic effects of human plasma from healthy volunteers, as well as patients with gastro-oesophageal reflux disease, Barrett's oesophagus (BO) and oesophageal adenocarcinoma (OAC) using the oesophageal adenocarcinoma cell line (OE33) and the lymphoblastoid cell line (TK6). Both TK6 and OE33 cells were treated with plasma (10 % volume, replacing foetal bovine serum (FBS) or horse serum (HS)) at different time points of 4 h (for the micronucleus (Mn) assay and the invasion assay) and 24 h (for the cell cycle studies). Plasma-induced effects on DNA damage levels, cell viability and the cell cycle were studied by the micronucleus assay, cytokinesis block proliferation index (CBPI) and flow cytometry respectively. The expression of IL-8 in supernatants of TK6 cells and IFN-β in OE33 cells was also analysed by enzyme-linked immunosorbent assay (ELISA). Finally, we carried out an assessment of cellular invasion of OE33 cells following plasma treatment. The results of the micronucleus assay confirmed the genotoxicity of direct plasma treatment from some participants through the increase in DNA damage in TK6 cells. Conversely, some individual patient plasma samples reduced background levels of TK6 cell Mn frequency, in an anti-genotoxic fashion. In TK6 cells, (on average) plasma samples from patients with Barrett's oesophagus induced higher micronucleus levels than healthy volunteers (p= 0.0019). There was little difference in Mn induction when using plasma versus serum to treat the cells in vitro. Cell cycle results showed that direct plasma treatment had a marked impact on OE33 cells at 24 h (p=0.0182 for BO and p=0.0320 for OAC) by decreasing the proportion of cells in the S phase, while plasma exposure was less impactful on the cell cycle of TK6 cells. Invasion of OE33 cells was also seen to be non-significantly affected by plasma treatment of OE33 cells. The addition of N-acetyl cysteine NAC in a dose-dependent matter did not alter the formation of Mn in TK6 cells, suggesting that reactive oxygen species (ROS) are not the root cause of plasma's genotoxicity. The concentration of IL-8 in TK6 cells and IFN-β in OE33 cells was significantly higher in cells treated with OAC-derived plasma than in the untreated negative control. Collectively, our results demonstrate that plasma-specific effects are detectable which helps us better understand some important aspects of the biology of blood-based biomarkers under development.
Collapse
Affiliation(s)
- Hamsa Naser
- Institute of Life Science, Faculty of Medicine, Health and Life Science, Swansea University, Singleton Park, Swansea SA2 8PP, UK.
| | - Kathryn Munn
- Institute of Life Science, Faculty of Medicine, Health and Life Science, Swansea University, Singleton Park, Swansea SA2 8PP, UK
| | - Rachel Lawrence
- Barts Cancer Centre, Charterhouse Square, London EC1M6AU, UK
| | - Rhiannon Wright
- Institute of Life Science, Faculty of Medicine, Health and Life Science, Swansea University, Singleton Park, Swansea SA2 8PP, UK
| | - Ethan Grewal
- Institute of Life Science, Faculty of Medicine, Health and Life Science, Swansea University, Singleton Park, Swansea SA2 8PP, UK
| | - Lisa Williams
- Department of Gastroenterology, Singleton Hospital, Swansea Bay University Health Board, Sketty Lane, Swansea SA28QA, UK
| | - Shareen Doak
- Institute of Life Science, Faculty of Medicine, Health and Life Science, Swansea University, Singleton Park, Swansea SA2 8PP, UK
| | - Gareth Jenkins
- Institute of Life Science, Faculty of Medicine, Health and Life Science, Swansea University, Singleton Park, Swansea SA2 8PP, UK
| |
Collapse
|
5
|
Marković A, Grujičić D, Živković Radojević M, Milošević-Djordjević O. Measurement of chromosomal instability and level of DNA damage in peripheral blood mononuclear cells of endometrial cancer patients. Mutagenesis 2024; 39:172-180. [PMID: 38267363 DOI: 10.1093/mutage/geae003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 01/23/2024] [Indexed: 01/26/2024] Open
Abstract
Endometrial cancer is one of the most common invasive gynecologic malignancies in developed countries. The aim of this study was to evaluate chromosomal instability and level of DNA damage in peripheral blood mononuclear cells (PBMCs) of newly diagnosed endometrial cancer patients in relation to health status (diagnosis), age, histological grade of cancer, residence, smoking, number of pregnancies, miscarriages, and abortions. The analyzed sample consisted of 60 individuals, 30 endometrial cancer patients with an average age of 64.37 ± 7.08, and 30 healthy control women with an average age of 60.23 ± 11.55. Chromosomal instability was evaluated by the cytokinesis-block micronucleus (CBMN) assay, and the level of DNA damage by the single-cell gel electrophoresis (comet) assay in PBMCs. The average frequencies of micronuclei (MNi), nucleoplasmic bridges (NPBs) as well as nuclear buds (NBUDs) were significantly higher in cancer patients compared to controls (P < .0005). There was no difference in the nuclear division index (NDI) among the analyzed samples. The comet assay showed that the patients had a significantly increased genetic damage index (GDI) compared with controls (P < .0005). Using linear regression analysis, we found that health status (diagnosis) had the strongest influence on the MN frequency as well as GDI (P < .0005). Our results indicated that there is a high level of genetic damage in both the level of DNA and the level of chromosomes in the PBMCs of newly diagnosed patients with endometrial cancer, where the frequency and level of damage were significantly affected by health status, grade of cancer, residence, number of pregnancies, miscarriages, and abortions.
Collapse
Affiliation(s)
- Aleksandra Marković
- Faculty of Science, Department of Biology and Ecology, University of Kragujevac, 34 000 Kragujevac, Serbia
| | - Darko Grujičić
- Faculty of Science, Department of Biology and Ecology, University of Kragujevac, 34 000 Kragujevac, Serbia
| | - Marija Živković Radojević
- Radiotherapy Department, University Clinical Centre, Centre for Radiation Oncology, 34 000 Kragujevac, Serbia
- Faculty of Medical Sciences, Department of Clinical Oncology, University of Kragujevac, 34 000 Kragujevac, Serbia
| | - Olivera Milošević-Djordjević
- Faculty of Science, Department of Biology and Ecology, University of Kragujevac, 34 000 Kragujevac, Serbia
- Faculty of Medical Sciences, Department of Genetics, University of Kragujevac, 34 000 Kragujevac, Serbia
| |
Collapse
|
6
|
de Araújo AC, de Medeiros MCS, do Nascimento PKDSB, Cobucci RN, Bortolin RH, de Rezende AA. Effect of maternal diet on the frequency of micronuclei in pregnant women and newborns: A protocol for systematic review and meta-analysis. PLoS One 2024; 19:e0300714. [PMID: 38527051 PMCID: PMC10962814 DOI: 10.1371/journal.pone.0300714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 02/28/2024] [Indexed: 03/27/2024] Open
Abstract
BACKGROUND The effects of diet on maternal and child genetic levels have been previously reported. Diet-associated DNA damage, such as the presence of micronuclei (MN), may be related to an increased risk of developing chronic diseases, such as cancer. Such damage is particularly concerning during pregnancy as it can affect the newborn. AIM This review will aim to summarize the primary evidence of the impact of diet during pregnancy on micronucleus frequency in the maternal-newborn population. METHODS This protocol was developed based on the Preferred Reporting Items guidelines for Systematic Reviews and Meta-analyses Protocol. The review was registered with the International Register of Prospective Systematic Reviews on February 17, 2022 (registration number: CRD42022302401). We will use PubMed, Embase, Web of Science, Scopus, Science direct, and Google databases to search for observational studies. This review will include studies that investigate the diet consumed by pregnant women and its effect on the frequency of MN in mothers and newborns without any time or language limitations. For data extraction, researchers will independently review the full text and collect information that characterizes the study and its findings. We will analyze the results by calculating the odds ratio for each type of diet evaluated, accompanied by a 95% confidence interval. We will perform a quantitative synthesis of homogeneous studies to perform a meta-analysis. Micronucleus frequency quantifies the effect and will be presented as the mean and standard deviation or median and interquartile range. EXPECTED RESULTS This review will aim to identify which dietary patterns during pregnancy may be associated with an increase in the frequency of MN in mothers and their newborns. Understanding the impact of diet on the frequency of MN is essential to deepen studies and to propose strategies that aim to protect the health of the public through food.
Collapse
Affiliation(s)
- Anny Cristine de Araújo
- Nutrition Postgraduate Program, Center for Health Sciences, Federal University of Rio Grande Do Norte, Natal, Brazil
| | | | | | - Ricardo Ney Cobucci
- Sciences Applied to Women’s Health Postgraduate Program, Center for Health Sciences, Maternidade Escola Januário Cicco (MECJ/EBSERH), Federal University of Rio Grande do Norte, Natal, Brazil
- Biotechnology Graduate Program, Potiguar University, UnP, Natal, Brazil
| | - Raul Hernandes Bortolin
- Health Sciences Postgraduate Program, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, Brazil
- Boston Children´s Hospital, Harvard Medical School, Boston, MA, United States of America
| | - Adriana Augusto de Rezende
- Nutrition Postgraduate Program, Center for Health Sciences, Federal University of Rio Grande Do Norte, Natal, Brazil
- Health Sciences Postgraduate Program, Center for Health Sciences, Federal University of Rio Grande do Norte, Natal, Brazil
- Department of Clinical and Toxicological Analyses, Federal University of Rio Grande do Norte, Natal, Brazil
| |
Collapse
|
7
|
Santovito A, Saracco M, Scarfo' M, Nota A, Bertolino S. Purebred dogs show higher levels of genomic damage compared to mixed breed dogs. Mamm Genome 2024; 35:90-98. [PMID: 37864685 PMCID: PMC10884103 DOI: 10.1007/s00335-023-10020-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 09/22/2023] [Indexed: 10/23/2023]
Abstract
Inbreeding is a common phenomenon in small, fragmented or isolated populations, typical conditions of many threatened species. In the present paper, we used a new non-invasive approach based on the buccal micronucleus assay to evaluate the possible relationships between inbreeding and genomic damage using the dog as model species. In particular, we assessed the frequencies of micronuclei and other nuclear aberrations in a group of purebred dogs (n = 77), comparing the obtained data with those from a control group represented by mixed breed dogs (n = 75). We found a significant increase of micronuclei, nuclear buds and total nuclear aberrations frequencies in purebred dogs compared to mixed-bred dogs. The absence of significant differences in the frequency of micronuclei and other nuclear aberrations amongst different breeds reinforces the hypothesis that the observed increased genomic damage amongst purebred dogs may not be due to a different genomic instability typical of a particular breed, but to inbreeding itself. This hypothesis is further confirmed by the fact that other endogen confounding factors, such as sex, age and weight, do not contribute significantly to the increase of genomic damage observed amongst purebred dogs. In conclusion, results presented in this study showed that, in purebred dogs, inbreeding may increase the levels of genomic damage. Considering that genomic damage is associated with increased physiological problems affecting animal health, the results we obtained may represent a stimulus to discourage the use of intensive inbreeding practices in captive populations and to reduce the fragmentation of wild populations.
Collapse
Affiliation(s)
- Alfredo Santovito
- Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123, Turin, Italy.
| | - Martina Saracco
- Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123, Turin, Italy
| | - Manuel Scarfo'
- Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123, Turin, Italy
| | - Alessandro Nota
- Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123, Turin, Italy
| | - Sandro Bertolino
- Department of Life Sciences and Systems Biology, University of Turin, Via Accademia Albertina 13, 10123, Turin, Italy
| |
Collapse
|
8
|
Fenech M, Knasmueller S, Nersesyan A, Bolognesi C, Wultsch G, Schunck C, Volpi E, Bonassi S. The buccal micronucleus cytome assay: New horizons for its implementation in human studies. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2024; 894:503724. [PMID: 38432772 DOI: 10.1016/j.mrgentox.2023.503724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/28/2023] [Accepted: 12/31/2023] [Indexed: 03/05/2024]
Abstract
In this report we provide a summary of the presentations and discussion of the latest knowledge regarding the buccal micronucleus (MN) cytome assay. This information was presented at the HUMN workshop held in Malaga, Spain, in connection with the 2023 European, Environmental Mutagenesis and Genomics conference. The presentations covered the most salient topics relevant to the buccal MN cytome assay including (i) the biology of the buccal mucosa, (ii) its application in human studies relating to DNA damage caused by environmental exposure to genotoxins, (iii) the association of buccal MN with cancer and a wide range of reproductive, metabolic, immunological, neurodegenerative and other age-related diseases, (iv) the impact of nutrition and lifestyle on buccal MN cytome assay biomarkers; (v) its potential for application to studies of DNA damage in children and obesity, and (vi) the growing prospects of enhancing the clinical utility by automated scoring of the buccal MN cytome assay biomarkers by image recognition software developed using artificial intelligence. The most important knowledge gap is the need of prospective studies to test whether the buccal MN cytome assay biomarkers predict health and disease.
Collapse
Affiliation(s)
- Michael Fenech
- Genome Health Foundation, North Brighton, SA 5048, Australia.
| | - Siegfried Knasmueller
- Institute of Cancer Research, Department of Medicine I, Medical University of Vienna, Vienna, Austria.
| | - Armen Nersesyan
- Institute of Cancer Research, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Claudia Bolognesi
- Environmental Carcinogenesis Unit, Ospedale Policlinico San Martino, Genoa, Italy
| | - Georg Wultsch
- Institute of Cancer Research, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | | | - Emanuela Volpi
- School of Life Sciences, University of Westminster, London, UK
| | - Stefano Bonassi
- Clinical and Molecular Epidemiology, IRCCS San Raffaele Roma, 00166 Rome, Italy.
| |
Collapse
|
9
|
Borghini A, Ndreu R, Canale P, Campolo J, Marinaro I, Mercuri A, Turchi S, Andreassi MG. Telomere Length, Mitochondrial DNA, and Micronucleus Yield in Response to Oxidative Stress in Peripheral Blood Mononuclear Cells. Int J Mol Sci 2024; 25:1428. [PMID: 38338706 PMCID: PMC10855977 DOI: 10.3390/ijms25031428] [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: 12/12/2023] [Revised: 01/19/2024] [Accepted: 01/22/2024] [Indexed: 02/12/2024] Open
Abstract
Telomere shortening, chromosomal damage, and mitochondrial dysfunction are major initiators of cell aging and biomarkers of many diseases. However, the underlying correlations between nuclear and mitochondrial DNA alterations remain unclear. We investigated the relationship between telomere length (TL) and micronucleus (MN) and their association with mitochondrial DNA copy number (mtDNAcn) in peripheral blood mononuclear cells (PBMCs) in response to 100 μM and 200 μM of hydrogen peroxide (H2O2) at 44, 72, and 96 h. Significant TL shortening was observed after both doses of H2O2 and at all times (all p < 0.05). A concomitant increase in MN was found at 72 h (p < 0.01) and persisted at 96 h (p < 0.01). An increase in mtDNAcn (p = 0.04) at 200 µM of H2O2 was also found. In PBMCs treated with 200 µM H2O2, a significant inverse correlation was found between TL and MN (r = -0.76, p = 0.03), and mtDNA content was directly correlated with TL (r = 0.6, p = 0.04) and inversely related to MN (r = -0.78, p = 0.02). Telomere shortening is the main triggering mechanism of chromosomal damage in stimulated T lymphocytes under oxidative stress. The significant correlations between nuclear DNA damage and mtDNAcn support the notion of a telomere-mitochondria axis that might influence age-associated pathologies and be a target for the development of relevant anti-aging drugs.
Collapse
Affiliation(s)
- Andrea Borghini
- CNR Institute of Clinical Physiology, 56124 Pisa, Italy; (R.N.); (P.C.); (I.M.); (A.M.); (S.T.); (M.G.A.)
| | - Rudina Ndreu
- CNR Institute of Clinical Physiology, 56124 Pisa, Italy; (R.N.); (P.C.); (I.M.); (A.M.); (S.T.); (M.G.A.)
| | - Paola Canale
- CNR Institute of Clinical Physiology, 56124 Pisa, Italy; (R.N.); (P.C.); (I.M.); (A.M.); (S.T.); (M.G.A.)
- Health Science Interdisciplinary Center, Sant’Anna School of Advanced Studies, 56124 Pisa, Italy
| | - Jonica Campolo
- CNR Institute of Clinical Physiology, ASST Grande Ospedale Metropolitano Niguarda, 20142 Milan, Italy;
| | - Irene Marinaro
- CNR Institute of Clinical Physiology, 56124 Pisa, Italy; (R.N.); (P.C.); (I.M.); (A.M.); (S.T.); (M.G.A.)
| | - Antonella Mercuri
- CNR Institute of Clinical Physiology, 56124 Pisa, Italy; (R.N.); (P.C.); (I.M.); (A.M.); (S.T.); (M.G.A.)
| | - Stefano Turchi
- CNR Institute of Clinical Physiology, 56124 Pisa, Italy; (R.N.); (P.C.); (I.M.); (A.M.); (S.T.); (M.G.A.)
| | - Maria Grazia Andreassi
- CNR Institute of Clinical Physiology, 56124 Pisa, Italy; (R.N.); (P.C.); (I.M.); (A.M.); (S.T.); (M.G.A.)
| |
Collapse
|
10
|
Schrenk D, Bignami M, Bodin L, Chipman JK, del Mazo J, Grasl‐Kraupp B, Hogstrand C, Hoogenboom L(R, Leblanc J, Nebbia CS, Nielsen E, Ntzani E, Petersen A, Sand S, Vleminckx C, Wallace H, Barregård L, Benford D, Broberg K, Dogliotti E, Fletcher T, Rylander L, Abrahantes JC, Gómez Ruiz JÁ, Steinkellner H, Tauriainen T, Schwerdtle T. Update of the risk assessment of inorganic arsenic in food. EFSA J 2024; 22:e8488. [PMID: 38239496 PMCID: PMC10794945 DOI: 10.2903/j.efsa.2024.8488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2024] Open
Abstract
The European Commission asked EFSA to update its 2009 risk assessment on arsenic in food carrying out a hazard assessment of inorganic arsenic (iAs) and using the revised exposure assessment issued by EFSA in 2021. Epidemiological studies show that the chronic intake of iAs via diet and/or drinking water is associated with increased risk of several adverse outcomes including cancers of the skin, bladder and lung. The CONTAM Panel used the benchmark dose lower confidence limit based on a benchmark response (BMR) of 5% (relative increase of the background incidence after adjustment for confounders, BMDL05) of 0.06 μg iAs/kg bw per day obtained from a study on skin cancer as a Reference Point (RP). Inorganic As is a genotoxic carcinogen with additional epigenetic effects and the CONTAM Panel applied a margin of exposure (MOE) approach for the risk characterisation. In adults, the MOEs are low (range between 2 and 0.4 for mean consumers and between 0.9 and 0.2 at the 95th percentile exposure, respectively) and as such raise a health concern despite the uncertainties.
Collapse
|
11
|
Bonetta S, Macrì M, Acito M, Villarini M, Moretti M, Bonetta S, Bosio D, Mariella G, Bellisario V, Bergamaschi E, Carraro E. DNA damage in workers exposed to pigment grade titanium dioxide (TiO 2) and association with biomarkers of oxidative stress and inflammation. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2024; 105:104328. [PMID: 38013010 DOI: 10.1016/j.etap.2023.104328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 11/22/2023] [Indexed: 11/29/2023]
Abstract
The present study was aimed at investigating DNA damage, micronuclei frequency and meta-nuclear alterations in buccal cells of workers involved in pigment-grade TiO2 production (15 exposed and 20 not-exposed). We also assessed associations of genotoxicity biomarkers with oxidative stress/inflammatory biomarkers in urine and exhaled breath condensate (EBC), as well as possible associations between biomarkers and reported respiratory symptoms. In spite of compliance with TiO2 Occupational Exposure Limits, results showed increased direct/oxidative DNA damage and micronuclei frequency in exposed workers. Genotoxicity parameters were associated with oxidative stress/inflammation biomarkers in urine and EBC, thus confirming that TiO2 exposure can affect the oxidative balance. Workers with higher genotoxic/oxidative stress biomarkers levels reported early respiratory symptoms suggesting that molecular alterations can be predictive of early health dysfunctions. These findings suggest the need to assess early health impairment in health surveillance programs and to address properly safety issues in workplaces where TiO2 is handled.
Collapse
Affiliation(s)
- Sa Bonetta
- Department of Public Health and Pediatrics, University of Torino, Via Santena 5 Bis, 10126 Torino, Italy.
| | - M Macrì
- Department of Life Sciences and Systems Biology, University of Torino, Via Accademia Albertina 13, 10123 Torino, Italy
| | - M Acito
- Department of Pharmaceutical Sciences, University of Perugia, Via del Giochetto, 06122 Perugia, Italy
| | - M Villarini
- Department of Pharmaceutical Sciences, University of Perugia, Via del Giochetto, 06122 Perugia, Italy
| | - M Moretti
- Department of Pharmaceutical Sciences, University of Perugia, Via del Giochetto, 06122 Perugia, Italy
| | - Si Bonetta
- Department of Life Sciences and Systems Biology, University of Torino, Via Accademia Albertina 13, 10123 Torino, Italy
| | - D Bosio
- Department of Public Health and Pediatrics, University of Torino, Via Santena 5 Bis, 10126 Torino, Italy
| | - G Mariella
- Department of Public Health and Pediatrics, University of Torino, Via Santena 5 Bis, 10126 Torino, Italy
| | - V Bellisario
- Department of Public Health and Pediatrics, University of Torino, Via Santena 5 Bis, 10126 Torino, Italy
| | - E Bergamaschi
- Department of Public Health and Pediatrics, University of Torino, Via Santena 5 Bis, 10126 Torino, Italy
| | - E Carraro
- Department of Public Health and Pediatrics, University of Torino, Via Santena 5 Bis, 10126 Torino, Italy
| |
Collapse
|
12
|
Pastor-Sierra K, Espitia-Pérez L, Espitia-Pérez P, Peñata-Taborda A, Brango H, Galeano-Páez C, Bru-Cordero OE, Palma-Parra M, Díaz SM, Trillos C, Briceño L, Idrovo ÁJ, Miranda-Pacheco J, Téllez E, Jiménez-Vidal L, Coneo-Pretelt A, Álvarez AH, Arteaga-Arroyo G, Ricardo-Caldera D, Salcedo-Arteaga S, Porras-Ramírez A, Varona-Uribe M. Micronuclei frequency and exposure to chemical mixtures in three Colombian mining populations. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 901:165789. [PMID: 37499817 DOI: 10.1016/j.scitotenv.2023.165789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 07/12/2023] [Accepted: 07/23/2023] [Indexed: 07/29/2023]
Abstract
The Colombian mining industry has witnessed significant growth. Depending on the scale and mineral extracted, complex chemical mixtures are generated, impacting the health of occupationally exposed populations and communities near mining projects. Increasing evidence suggests that chromosomal instability (CIN) is an important link between the development of certain diseases and exposure to complex mixtures. To better understand the effects of exposure to complex mixtures we performed a biomonitoring study on 407 healthy individuals from four areas: three located in municipalities exploiting different-scale mining systems and a reference area with no mining activity. Large, medium, and small-scale mining systems were analyzed in Montelibano (Córdoba), artisanal and small-scale mining (ASGM) in Nechí (Antioquia), and a closed mining system in Aranzazu (Caldas). The reference area with no mining activity was established in Montería (Córdoba). ICP-MS measured multi-elemental exposure in hair, and CIN was evaluated using the cytokinesis-block micronucleus technique (MNBN). Exposure to mixtures of chemical elements was comparable in workers and residents of the mining areas but significantly higher compared to reference individuals. In Montelibano, increased MNBN frequencies were associated with combined exposure to Se, Hg, Mn, Pb, and Mg. This distinct pattern significantly differed from other areas. Specifically, in Nechí, Cr, Ni, Hg, Se, and Mg emerged as the primary contributors to elevated frequencies of MNBN. In contrast, a combination of Hg and Ni played a role in increasing MNBN in Aranzazu. Interestingly, Se consistently correlated with increased MNBN frequencies across all active mining areas. Chemical elements in Montelibano exhibit a broader range compared to other mining zones, reflecting the characteristics of the high-impact and large-scale mining in the area. This research provides valuable insights into the effects of exposure to chemical mixtures, underscoring the importance of employing this approach in the risk assessment of communities, especially those from residential areas.
Collapse
Affiliation(s)
- Karina Pastor-Sierra
- Grupo de Investigación Biomédica y Biología Molecular, Universidad del Sinú, Montería, Córdoba, Colombia; Programa de doctorado en Salud Pública, Universidad El Bosque, Bogotá, Colombia
| | - Lyda Espitia-Pérez
- Grupo de Investigación Biomédica y Biología Molecular, Universidad del Sinú, Montería, Córdoba, Colombia.
| | - Pedro Espitia-Pérez
- Grupo de Investigación Biomédica y Biología Molecular, Universidad del Sinú, Montería, Córdoba, Colombia
| | - Ana Peñata-Taborda
- Grupo de Investigación Biomédica y Biología Molecular, Universidad del Sinú, Montería, Córdoba, Colombia
| | - Hugo Brango
- Departamento de Matemáticas y Estadística, Universidad del Norte, Barranquilla, Colombia
| | - Claudia Galeano-Páez
- Grupo de Investigación Biomédica y Biología Molecular, Universidad del Sinú, Montería, Córdoba, Colombia
| | | | - Marien Palma-Parra
- Dirección de Investigación en Salud Pública, Grupo de Salud Ambiental y Laboral, Instituto Nacional de Salud, Bogotá, Colombia
| | - Sonia M Díaz
- Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogotá, Colombia
| | - Carlos Trillos
- Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogotá, Colombia
| | - Leonardo Briceño
- Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogotá, Colombia
| | - Álvaro J Idrovo
- Departamento de Salud Pública, Escuela de Medicina, Universidad Industrial de Santander, Bucaramanga, Colombia
| | - Juan Miranda-Pacheco
- Grupo de Investigación Biomédica y Biología Molecular, Universidad del Sinú, Montería, Córdoba, Colombia
| | - Eliana Téllez
- Dirección de Investigación en Salud Pública, Grupo de Salud Ambiental y Laboral, Instituto Nacional de Salud, Bogotá, Colombia
| | - Luisa Jiménez-Vidal
- Grupo de Investigación Biomédica y Biología Molecular, Universidad del Sinú, Montería, Córdoba, Colombia
| | - Andrés Coneo-Pretelt
- Grupo de Investigación Biomédica y Biología Molecular, Universidad del Sinú, Montería, Córdoba, Colombia
| | - Alicia Humanez Álvarez
- Grupo de Investigación Biomédica y Biología Molecular, Universidad del Sinú, Montería, Córdoba, Colombia
| | - Gean Arteaga-Arroyo
- Grupo de Investigación Biomédica y Biología Molecular, Universidad del Sinú, Montería, Córdoba, Colombia
| | - Dina Ricardo-Caldera
- Grupo de Investigación en Enfermedades Tropicales y Resistencia Bacteriana, Universidad del Sinú, Montería, Córdoba, Colombia
| | - Shirley Salcedo-Arteaga
- Grupo de Investigación Biomédica y Biología Molecular, Universidad del Sinú, Montería, Córdoba, Colombia
| | | | - Marcela Varona-Uribe
- Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogotá, Colombia
| |
Collapse
|
13
|
Kreutzmann M, Kraus BJ, Christa M, Störk S, Jansen EHJM, Stopper H, Schupp N. Differential Modulation of Markers of Oxidative Stress and DNA Damage in Arterial Hypertension. Antioxidants (Basel) 2023; 12:1965. [PMID: 38001818 PMCID: PMC10669810 DOI: 10.3390/antiox12111965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 10/30/2023] [Accepted: 10/30/2023] [Indexed: 11/26/2023] Open
Abstract
Patients with arterial hypertension have an increased risk of developing tumors, particularly renal cell carcinoma. Arterial hypertension is linked to DNA damage via the generation of oxidative stress, in which an upregulated renin-angiotensin-aldosterone system plays a crucial role. The current study investigated surrogates of oxidative stress and DNA damage in a group of hypertensive patients (HypAll, n = 64) and subgroups of well (HypWell, n = 36) and poorly (HypPoor, n = 28) controlled hypertensive patients compared to healthy controls (n = 8). In addition, a longitudinal analysis was performed with some of the hypertensive patients. Markers for oxidative stress in plasma (SHp, D-ROM, and 3-nitrotyrosine) and urine (8-oxodG, 15-F2t-isoprostane, and malondialdehyde) and markers for DNA damage in lymphocytes (γ-H2AX and micronuclei) were measured. In HypAll, all markers of oxidative stress except malondialdehyde were increased compared to the controls. After adjustment for age, this association was maintained for the protein stress markers SHp and 3-nitrotyrosine. With regard to the markers for DNA damage, there was no difference between HypAll and the controls. Further, no significant differences became apparent in the levels of both oxidative stress and DNA damage between HypWell and HypPoor. Finally, a positive correlation between the development of blood pressure and oxidative stress was observed in the longitudinal study based on the changes in D-ROM and systolic blood pressure. In conclusion, we found increased oxidative stress in extensively treated hypertensive patients correlating with the level of blood-pressure control but no association with DNA damage.
Collapse
Affiliation(s)
- Moritz Kreutzmann
- Institute of Toxicology, Medical Faculty, University of Düsseldorf, 40225 Düsseldorf, Germany;
| | - Bettina J. Kraus
- Department of Clinical Research & Epidemiology, Comprehensive Heart Failure Centre, University Hospital Würzburg, 97078 Würzburg, Germany (M.C.); (S.S.)
- Department of Medicine I, University Hospital Würzburg, 97080 Würzburg, Germany
- Boehringer Ingelheim International GmbH, 55216 Ingelheim, Germany
| | - Martin Christa
- Department of Clinical Research & Epidemiology, Comprehensive Heart Failure Centre, University Hospital Würzburg, 97078 Würzburg, Germany (M.C.); (S.S.)
- Department of Medicine I, University Hospital Würzburg, 97080 Würzburg, Germany
| | - Stefan Störk
- Department of Clinical Research & Epidemiology, Comprehensive Heart Failure Centre, University Hospital Würzburg, 97078 Würzburg, Germany (M.C.); (S.S.)
- Department of Medicine I, University Hospital Würzburg, 97080 Würzburg, Germany
| | - Eugène H. J. M. Jansen
- Centre for Health Protection, National Institute for Public Health and the Environment, 3721 MA Bilthoven, The Netherlands;
| | - Helga Stopper
- Institute of Pharmacology and Toxicology, University Hospital Würzburg, 97080 Würzburg, Germany;
| | - Nicole Schupp
- Institute of Toxicology, Medical Faculty, University of Düsseldorf, 40225 Düsseldorf, Germany;
| |
Collapse
|
14
|
Attia SM, Ahmad SF, Nadeem A, Attia MSM, Ansari MA, Ashour AE, Albekairi NA, Al-Hamamah MA, Alshamrani AA, Bakheet SA. Saxagliptin, a selective dipeptidyl peptidase-4 inhibitor, alleviates somatic cell aneugenicity and clastogenicity in diabetic mice. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2023; 892:503707. [PMID: 37973297 DOI: 10.1016/j.mrgentox.2023.503707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 10/13/2023] [Accepted: 10/16/2023] [Indexed: 11/19/2023]
Abstract
Diabetes-related complications are becoming increasingly common as the global prevalence of diabetes increases. Diabetes is also linked to a high risk of developing cancer. This raises the question of whether cancer vulnerability is caused by diabetes itself or the use of antidiabetic drugs. Chromosomal instability, a source of genetic modification involving either an altered chromosomal number or structure, is a hallmark of cancer. Saxagliptin has been approved by the FDA for diabetes treatment. However, the detailed in vivo effects of prolonged saxagliptin treatment on chromosomal instability have not yet been reported. In this study, streptozotocin was used to induce diabetes in mice, and both diabetic and non-diabetic mice received saxagliptin for five weeks. Fluorescence in situ hybridization was conducted in combination with a bone marrow micronucleus test for measuring chromosomal instability. Our results indicated that saxagliptin is neither mutagenic nor cytotoxic, under the given treatment regimen. Diabetic mice had a much higher incidence of micronuclei formation, and a centromeric DNA probe was present inside the majority of the induced micronuclei, indicating that most of these were caused by chromosome nondisjunction. Conversely, diabetic mice treated with saxagliptin exhibited a significant decrease in micronuclei induction, which were centromeric-positive and centromeric-negative. Diabetes also causes significant biochemical changes indicative of oxidative stress, such as increased lipid peroxidation and decreased reduced/oxidized glutathione ratio, which was reversed by saxagliptin administration. Overall, saxagliptin, the non-mutagenic antidiabetic drug, maintains chromosomal integrity in diabetes and reduces micronuclei formation by restoring redox imbalance, further indicating its usefulness in diabetic patients.
Collapse
Affiliation(s)
- Sabry M Attia
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, 11451, Riyadh, Saudi Arabia.
| | - Sheikh F Ahmad
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Ahmed Nadeem
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Mohamed S M Attia
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Mushtaq A Ansari
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Abdelkader E Ashour
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Norah A Albekairi
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Mohammed A Al-Hamamah
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Ali A Alshamrani
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, 11451, Riyadh, Saudi Arabia
| | - Saleh A Bakheet
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, 11451, Riyadh, Saudi Arabia
| |
Collapse
|
15
|
Fenech MF, Bull CF, Van Klinken BJW. Protective Effects of Micronutrient Supplements, Phytochemicals and Phytochemical-Rich Beverages and Foods Against DNA Damage in Humans: A Systematic Review of Randomized Controlled Trials and Prospective Studies. Adv Nutr 2023; 14:1337-1358. [PMID: 37573943 PMCID: PMC10721466 DOI: 10.1016/j.advnut.2023.08.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 07/19/2023] [Accepted: 08/07/2023] [Indexed: 08/15/2023] Open
Abstract
Accumulation of deoxyribonucleic acid (DNA) damage diminishes cellular health, increases risk of developmental and degenerative diseases, and accelerates aging. Optimizing nutrient intake can minimize accrual of DNA damage. The objectives of this review are to: 1) assemble and systematically analyze high-level evidence for the effect of supplementation with micronutrients and phytochemicals on baseline levels of DNA damage in humans, and 2) use this knowledge to identify which of these essential micronutrients or nonessential phytochemicals promote DNA integrity in vivo in humans. We conducted systematic literature searches of the PubMed database to identify interventional, prospective, cross-sectional, or in vitro studies that explored the association between nutrients and established biomarkers of DNA damage associated with developmental and degenerative disease risk. Biomarkers included lymphocyte chromosome aberrations, lymphocyte and buccal cell micronuclei, DNA methylation, lymphocyte/leukocyte DNA strand breaks, DNA oxidation, telomere length, telomerase activity, and mitochondrial DNA mutations. Only randomized, controlled interventions and uncontrolled longitudinal intervention studies conducted in humans were selected for evaluation and data extraction. These studies were ranked for the quality of their study design. In all, 96 of the 124 articles identified reported studies that achieved a quality assessment score ≥ 5 (from a maximum score of 7) and were included in the final review. Based on these studies, nutrients associated with protective effects included vitamin A and its precursor β-carotene, vitamins C, E, B1, B12, folate, minerals selenium and zinc, and phytochemicals such as curcumin (with piperine), lycopene, and proanthocyanidins. These findings highlight the importance of nutrients involved in (i) DNA metabolism and repair (folate, vitamin B12, and zinc) and (ii) prevention of oxidative stress and inflammation (vitamins A, C, E, lycopene, curcumin, proanthocyanidins, selenium, and zinc). Supplementation with certain micronutrients and their combinations may reduce DNA damage and promote cellular health by improving the maintenance of genome integrity.
Collapse
Affiliation(s)
- Michael F Fenech
- Molecular Diagnostics Solutions, CSIRO Health & Biosecurity, Adelaide, South Australia, Australia; Clinical and Health Sciences, Health and Biomedical Innovation, University of South Australia, Adelaide, South Australia, Australia; Genome Health Foundation, North Brighton, South Australia, Australia.
| | - Caroline F Bull
- Molecular Diagnostics Solutions, CSIRO Health & Biosecurity, Adelaide, South Australia, Australia; School of Molecular and Biomedical Sciences, University of Adelaide, North Terrace, Adelaide, South Australia, Australia.
| | - B Jan-Willem Van Klinken
- GSK Consumer Healthcare (now named Haleon), Warren, New Jersey, USA; Brightseed, San Francisco, CA, United States.
| |
Collapse
|
16
|
Costa LF, Marciano LPA, Feltrim F, Freire JO, Silva GB, Silvério ACP, Martins I. Assessment of cellular damage with cytome assay among environmental/occupational triazole. Chem Biol Interact 2023; 383:110689. [PMID: 37648053 DOI: 10.1016/j.cbi.2023.110689] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 08/09/2023] [Accepted: 08/26/2023] [Indexed: 09/01/2023]
Abstract
The use of triazole fungicides is common in Minas Gerais, Brazil. However, the risk arising from excessive and often unprotected exposure can be harmful to farmers. Therefore, we evaluated volunteers, exposed to triazole fungicides for cellular damage caused by this pesticide. In the buccal micronucleus cytome assay (BMCyt), cells were analyzed. Urinary triazoles were analyzed by the Liquid-Liquid Extraction coupled with Gas-chromatography/mass-spectrometry (LLE-GC/MS). Statistical differences were found for all cell types evaluated in residents of rural areas (n = 145). Analysis of variance showed statistical difference in kariolytic and pyknotic cells, between the groups of men and women living in rural areas, with higher incidence in the male group. Likewise, higher concentrations triazoles in urine samples in the male group were observed. Greater cellular damage suggests increases in DNA damage, chromossomal instability and cell deaths. The results showed the urgency of the public management with the implementation of measures to minimize the pesticides exposure.
Collapse
Affiliation(s)
- Luiz F Costa
- Laboratory of Toxicants and Drugs Analysis- LATF, Faculty of Pharmaceutical Sciences, Federal University of Alfenas - Unifal-MG, Brazil
| | - Luiz P A Marciano
- Laboratory of Toxicants and Drugs Analysis- LATF, Faculty of Pharmaceutical Sciences, Federal University of Alfenas - Unifal-MG, Brazil
| | - Fernando Feltrim
- Federal University of Alfenas - Unifal-MG, Graduation in Pharmaceutical Sciences, Brazil
| | - Josiane O Freire
- Federal University of Alfenas - Unifal-MG, Graduation in Pharmaceutical Sciences, Brazil
| | - Gislaine B Silva
- Federal University of Alfenas - Unifal-MG, Graduation in Pharmaceutical Sciences, Brazil
| | | | - Isarita Martins
- Laboratory of Toxicants and Drugs Analysis- LATF, Faculty of Pharmaceutical Sciences, Federal University of Alfenas - Unifal-MG, Brazil.
| |
Collapse
|
17
|
Asurappulige HSH, Thomas AD, Morse HR. Genotoxicity of cytokines at chemotherapy-induced 'storm' concentrations in a model of the human bone marrow. Mutagenesis 2023; 38:201-215. [PMID: 37326959 PMCID: PMC10448863 DOI: 10.1093/mutage/gead018] [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: 07/25/2022] [Accepted: 06/14/2023] [Indexed: 06/17/2023] Open
Abstract
Donor cell leukaemia (DCL) is a complication of haematopoietic stem cell transplantation where donated cells become malignant within the patient's bone marrow. As DCL predominates as acute myeloid leukaemia, we hypothesized that the cytokine storm following chemotherapy played a role in promoting and supporting leukaemogenesis. Cytokines have also been implicated in genotoxicity; thus, we explored a cell line model of the human bone marrow (BM) to secrete myeloid cytokines following drug treatment and their potential to induce micronuclei. HS-5 human stromal cells were exposed to mitoxantrone (MTX) and chlorambucil (CHL) and, for the first time, were profiled for 80 cytokines using an array. Fifty-four cytokines were detected in untreated cells, of which 24 were upregulated and 10 were downregulated by both drugs. FGF-7 was the lowest cytokine to be detected in both untreated and treated cells. Eleven cytokines not detected at baseline were detected following drug exposure. TNFα, IL6, GM-CSF, G-CSF, and TGFβ1 were selected for micronuclei induction. TK6 cells were exposed to these cytokines in isolation and in paired combinations. Only TNFα and TGFβ1 induced micronuclei at healthy concentrations, but all five cytokines induced micronuclei at storm levels, which was further increased when combined in pairs. Of particular concern was that some combinations induced micronuclei at levels above the mitomycin C positive control; however, most combinations were less than the sum of micronuclei induced following exposure to each cytokine in isolation. These data infer a possible role for cytokines through chemotherapy-induced cytokine storm, in the instigation and support of leukaemogenesis in the BM, and implicate the need to evaluate individuals for variability in cytokine secretion as a potential risk factor for complications such as DCL.
Collapse
Affiliation(s)
- Harshini S H Asurappulige
- School of Applied Sciences, University of the West of England, Frenchay Campus, Coldharbour Lane, Bristol BS16 1QY, United Kingdom
| | - Adam D Thomas
- School of Applied Sciences, University of the West of England, Frenchay Campus, Coldharbour Lane, Bristol BS16 1QY, United Kingdom
| | - H Ruth Morse
- School of Applied Sciences, University of the West of England, Frenchay Campus, Coldharbour Lane, Bristol BS16 1QY, United Kingdom
| |
Collapse
|
18
|
Kirsch-Volders M, Fenech M. Towards prevention of aneuploidy-associated cellular senescence and aging: more questions than answers? MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2023; 792:108474. [PMID: 37866738 DOI: 10.1016/j.mrrev.2023.108474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 10/10/2023] [Accepted: 10/16/2023] [Indexed: 10/24/2023]
Abstract
The aim of this review is to discuss how aneuploidy contributes to the aging process, and to identify plausible strategies for its prevention. After an overview of mechanisms leading to aneuploidy and the major features of cellular senescence, we discuss the link between (i) aneuploidy and cellular senescence; (ii) aneuploidy and aging; and (iii) cellular senescence and aging. We also consider (i) interactions between aneuploidy, micronuclei, cellular senescence and aging, (ii) the potential of nutritional treatments to prevent aneuploidy-associated senescence and aging, and (iii) knowledge and technological gaps. Evidence for a causal link between aneuploidy, senescence and aging is emerging. In vitro, aneuploidy accompanies the entry into cellular senescence and can itself induce senescence. How aneuploidy contributes in vivo to cellular senescence is less clear. Several routes depending on aneuploidy and/or senescence converge towards chronic inflammation, the major driver of unhealthy aging. Aneuploidy can induce the pro-inflammatory Senescence Associated Secretory Phenotype (SASP), either directly or as a result of micronucleus (MN) induction leading to leakage of DNA into the cytoplasm and triggering of the cGAS-STING pathway of innate immune response. A major difficulty in understanding the impact of aneuploidy on senescence and aging in vivo, results from the heterogeneity of cellular senescence in different tissues at the cytological and molecular level. Due to this complexity, there is at the present time no biomarker or biomarker combination characteristic for all types of senescent cells. In conclusion, a deeper understanding of the critical role aneuploidy plays in cellular senescence and aging is essential to devise practical strategies to protect human populations from aneuploidy-associated pathologies. We discuss emerging evidence, based on in vitro and in vivo studies, that adequate amounts of specific micronutrients are essential for prevention of aneuploidy in humans and that precise nutritional intervention may be essential to help avoid the scourge of aneuploidy-driven diseases.
Collapse
Affiliation(s)
- Micheline Kirsch-Volders
- Laboratory for Cell Genetics, Department Biology, Faculty of Sciences and Bio-engineering Sciences, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium.
| | - Michael Fenech
- Clinical and Health Sciences, University of South Australia, SA 5000, Australia; Genome Health Foundation, North Brighton, SA 5048, Australia.
| |
Collapse
|
19
|
Dhillon VS, Deo P, Fenech M. The Relationship between Telomere Length and Nucleoplasmic Bridges and Severity of Disease in Prostate Cancer Patients. Cancers (Basel) 2023; 15:3351. [PMID: 37444460 DOI: 10.3390/cancers15133351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 06/20/2023] [Accepted: 06/23/2023] [Indexed: 07/15/2023] Open
Abstract
Telomeres are repetitive nucleotide (TTAGGG) sequences that stabilize the chromosome ends and play an important role in the prevention of cancer initiation and progression. Nucleoplasmic bridges (NPBs) are formed when chromatids remain joined together during mitotic anaphase either due to mis-repair of DNA breaks or due to chromatid end fusion as a result of telomere loss or telomere dysfunction. We tested the hypotheses that (i) telomere length (TL) is shorter in prostate cancer (PC) patients relative to healthy age-matched individuals, (ii) TL differs in different stages of PC and (iii) shorter TL is significantly correlated with NPBs formation in PC cases. TL was measured in whole blood by well-established quantitative PCR method and the frequency of NPBs was measured in lymphocytes using cytokinesis-block micronucleus cytome (CBMNcyt) assay. Our results indicate that TL is shorter and NPBs are increased in PC patients relative to age-matched healthy controls. Furthermore, TL was significantly shorter (p = 0.03) in patients with a Gleason score more than 7 and there was also a significant trend of decreasing TL across all three stages (p trend = 0.01; Gleason score <7, 7 and >7). Furthermore, TL was significantly inversely correlated with NPB frequency in PC patients (r = -0.316; p = 0.001) but not in controls (r = 0.163; p = 0.06) and their relationships became stronger with higher Gleason scores. More studies are required that can confirm our observations and explore mechanistic differences in the role of telomeres in NPB formation in PC cases relative to non-cancer cases.
Collapse
Affiliation(s)
- Varinderpal S Dhillon
- Health and Biomedical Innovation, Clinical and Health Sciences, University of South Australia, Adelaide 5000, Australia
| | - Permal Deo
- Health and Biomedical Innovation, Clinical and Health Sciences, University of South Australia, Adelaide 5000, Australia
| | - Michael Fenech
- Health and Biomedical Innovation, Clinical and Health Sciences, University of South Australia, Adelaide 5000, Australia
- Genome Health Foundation, North Brighton 5048, Australia
| |
Collapse
|
20
|
Liu H, Su H, Wang F, Dang Y, Ren Y, Yin S, Lu H, Zhang H, Wu J, Xu Z, Zheng M, Gao J, Cao Y, Xu J, Chen L, Wu X, Ma M, Xu L, Wang F, Chen J, Su C, Wu C, Xie H, Gu J, Xi JJ, Ge B, Fei Y, Chen C. Pharmacological boosting of cGAS activation sensitizes chemotherapy by enhancing antitumor immunity. Cell Rep 2023; 42:112275. [PMID: 36943864 DOI: 10.1016/j.celrep.2023.112275] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 01/18/2023] [Accepted: 03/01/2023] [Indexed: 03/23/2023] Open
Abstract
Enhancing chemosensitivity is one of the largest unmet medical needs in cancer therapy. Cyclic GMP-AMP synthase (cGAS) connects genome instability caused by platinum-based chemotherapeutics to type I interferon (IFN) response. Here, by using a high-throughput small-molecule microarray-based screening of cGAS interacting compounds, we identify brivanib, known as a dual inhibitor of vascular endothelial growth factor receptor and fibroblast growth factor receptor, as a cGAS modulator. Brivanib markedly enhances cGAS-mediated type I IFN response in tumor cells treated with platinum. Mechanistically, brivanib directly targets cGAS and enhances its DNA binding affinity. Importantly, brivanib synergizes with cisplatin in tumor control by boosting CD8+ T cell response in a tumor-intrinsic cGAS-dependent manner, which is further validated by a patient-derived tumor-like cell clusters model. Taken together, our findings identify cGAS as an unprecedented target of brivanib and provide a rationale for the combination of brivanib with platinum-based chemotherapeutics in cancer treatment.
Collapse
Affiliation(s)
- Haipeng Liu
- Clinical and Translational Research Center, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China; Central Laboratory, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China; Shanghai Key Laboratory of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China; Shanghai HUASHEN Institute of Microbes and Infections, Shanghai 200052, China.
| | - Hang Su
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Fei Wang
- Shanghai Key Laboratory of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Yifang Dang
- Clinical and Translational Research Center, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China; Central Laboratory, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China; Shanghai HUASHEN Institute of Microbes and Infections, Shanghai 200052, China
| | - Yijiu Ren
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Shenyi Yin
- College of Future Technology, Peking University, Beijing 100871, China
| | - Huinan Lu
- GeneX Health Co. Ltd., Beijing 100195, China
| | - Hang Zhang
- Department of Optical Science and Engineering, Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Fudan University, Shanghai 200433, China
| | - Jun Wu
- Center for Bioinformatics and Computational Biology, and the Institute of Biomedical Sciences, School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Zhu Xu
- Department of Hepatobiliary Surgery, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Mengge Zheng
- Clinical and Translational Research Center, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China; Central Laboratory, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Jiani Gao
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Yajuan Cao
- Clinical and Translational Research Center, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China; Central Laboratory, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Junfang Xu
- Clinical and Translational Research Center, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China; Central Laboratory, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Li Chen
- Clinical and Translational Research Center, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China; Central Laboratory, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Xiangyang Wu
- Clinical and Translational Research Center, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China; Shanghai Key Laboratory of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Mingtong Ma
- Shanghai Key Laboratory of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Long Xu
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Fang Wang
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Jianxia Chen
- Clinical and Translational Research Center, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China; Shanghai Key Laboratory of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Chunxia Su
- Department of Oncology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Chunyan Wu
- Department of Pathology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Huikang Xie
- Department of Pathology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Jijie Gu
- WuXi Biologics (Shanghai) Co., Ltd., Shanghai City 201401, China
| | - Jianzhong Jeff Xi
- College of Future Technology, Peking University, Beijing 100871, China
| | - Baoxue Ge
- Clinical and Translational Research Center, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China; Shanghai Key Laboratory of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China.
| | - Yiyan Fei
- Department of Optical Science and Engineering, Shanghai Engineering Research Center of Ultra-Precision Optical Manufacturing, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Fudan University, Shanghai 200433, China.
| | - Chang Chen
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China.
| |
Collapse
|
21
|
Çavuşoğlu K, Kalefetoğlu Macar T, Macar O, Çavuşoğlu D, Yalçın E. Comparative investigation of toxicity induced by UV-A and UV-C radiation using Allium test. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:33988-33998. [PMID: 35032264 PMCID: PMC8760590 DOI: 10.1007/s11356-021-18147-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 12/13/2021] [Indexed: 06/14/2023]
Abstract
Organisms are increasingly exposed to ultraviolet (UV) rays of sunlight, due to the thinning of the ozone layer and its widespread use in sterilization processes, especially against the SARS-CoV-2 virus. The present study was conducted with the purpose of evaluating the damages of UV-A and UV-C radiations in Allium cepa L. roots. The effects of two different types of UV on some physiological, biochemical, cytogenotoxic, and anatomical parameters were investigated in a multifaceted study. Three groups were formed from Allium bulbs, one of which was the control group. One of the other groups was exposed to 254 nm (UV-C) and the other to 365 nm (UV-A) UV. Growth retardation effect of UV was investigated with respect to germination percentage, total weight gain, and root elongation, while cytogenotoxicity arisen from UV exposure was analyzed using mitotic index (MI) and chromosomal aberration (CA) and micronucleus (MN) frequency. Oxidative stress due to UV application was investigated based on the accumulation of malondialdehyde (MDA) and the total activities of superoxide dismutase (SOD) and catalase (CAT) enzymes. Also, anatomical changes induced by UV-A and UV-C were analyzed in root meristematic cells. UV treatments caused significant reductions in growth-related parameters. Both UV treatments caused a significant increase in MDA levels and induction of SOD and CAT enzymes in root meristematic cells. A decrease in MI and an increase in the frequency of MN and CAs were observed in root tip cells, indicating the cytogenotoxic effect of UV application. Anatomical damages such as epidermis cell damage, cortex cell damage, necrotic zones, giant cell nucleus, and indistinct transmission tissue occurred in cells exposed to UV. All of the physiological, biochemical, cytogenetic, and anatomical damages observed in this study were more severe in cells treated with UV-C compared to UV-A. This study suggested that UV exposure triggered growth inhibition, cytogenotoxicity, oxidative stress, and meristematic cell damages in A. cepa roots depending on the wavelength.
Collapse
Affiliation(s)
- Kültiğin Çavuşoğlu
- Faculty of Science and Art, Department of Biology, Giresun University, 28049, Giresun, Turkey
| | - Tuğçe Kalefetoğlu Macar
- Department of Food Technology, Şebinkarahisar School of Applied Sciences, Giresun University, 28400, Giresun, Turkey.
| | - Oksal Macar
- Department of Food Technology, Şebinkarahisar School of Applied Sciences, Giresun University, 28400, Giresun, Turkey
| | - Dilek Çavuşoğlu
- Department of Plant and Animal Production, Atabey Vocational School, Isparta Applied Sciences University, 32200, Isparta, Turkey
| | - Emine Yalçın
- Faculty of Science and Art, Department of Biology, Giresun University, 28049, Giresun, Turkey
| |
Collapse
|
22
|
Nersesyan A, Kundi M, Fenech M, Stopper H, da Silva J, Bolognesi C, Mišík M, Knasmueller S. Recommendations and quality criteria for micronucleus studies with humans. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2022; 789:108410. [PMID: 35690413 DOI: 10.1016/j.mrrev.2021.108410] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 12/15/2021] [Accepted: 12/17/2021] [Indexed: 06/15/2023]
Abstract
Micronucleus (MN) analyses in peripheral blood lymphocytes and exfoliated cells from different organs (mouth, nose, bladder and cervix) are at present the most widely used approaches to detect damage of genetic material in humans. MN are extranuclear DNA-containing bodies, which can be identified microscopically. They reflect structural and numerical chromosomal aberrations and are formed as a consequence of exposure to occupational, environmental and lifestyle genotoxins. They are also induced as a consequence of inadequate intake of certain trace elements and vitamins. High MN rates are associated with increased risk of cancer and a range of non-cancer diseases in humans. Furthermore, evidence is accumulating that measurements of MN could be a useful tool for the diagnosis and prognosis of different forms of cancer and other diseases (inflammation, infections, metabolic disorders) and for the assessment of the therapeutic success of medical treatments. Recent reviews of the current state of knowledge suggest that many clinical studies have methodological shortcomings. This could lead to controversial findings and limits their usefulness in defining the impact of exposure concentrations of hazardous chemicals, for the judgment of remediation strategies, for the diagnosis of diseases and for the identification of protective or harmful dietary constituents. This article describes important quality criteria for human MN studies and contains recommendations for acceptable study designs. Important parameters that need more attention include sufficiently large group sizes, adequate duration of intervention studies, the exclusion of confounding factors which may affect the results (sex, age, body mass index, nutrition, etc.), the evaluation of appropriate cell numbers per sample according to established scoring criteria as well as the use of proper stains and adequate statistical analyses.
Collapse
Affiliation(s)
- A Nersesyan
- Institute of Cancer Research, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - M Kundi
- Center for Public Health, Department of Environmental Health, Medical University of Vienna, Vienna, Austria
| | - M Fenech
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia; Universiti Kebangsaan Malaysia, Selangor, Malaysia; Genome Health Foundation, North Brighton, SA, Australia
| | - H Stopper
- Institute of Pharmacology and Toxicology, Wuerzburg University, Wuerzburg, Germany
| | - J da Silva
- Laboratory of Genetic Toxicology, Lutheran University of Brazil (ULBRA) & LaSalle University (UniLaSalle), Canoas, RS, Brazil
| | - C Bolognesi
- Environmental Carcinogenesis Unit, Ospedale Policlinico San Martino, Genoa, Italy
| | - M Mišík
- Institute of Cancer Research, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - S Knasmueller
- Institute of Cancer Research, Department of Medicine I, Medical University of Vienna, Vienna, Austria.
| |
Collapse
|
23
|
Bonassi S, Fenech M. Roadmap for translating results from the micronucleus assay into clinical practice: From observational studies to randomized controlled trials. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2021; 788:108390. [PMID: 34893155 DOI: 10.1016/j.mrrev.2021.108390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 07/01/2021] [Accepted: 07/05/2021] [Indexed: 06/14/2023]
Abstract
According to the definition delivred by the WHO, a biomarker, independently from its role that may be indicative of exposure, response or effect, is inevitably linked to a clinical outcome or to a disease. The presence of a continuum from early biological events to therapy, and prognosis is the unifying mechanism that justifies this conclusion. Traditionally, the technical and inter-individual variability of the assays, together with the long duration between early pathogenetic events and the disease, prevented clinical applications to these biomarkers. These limitations became less important with the emerging of personalized preventive medicine because of the focus on disease prediction and prevention, and the recommended use of all data concerning measurable patient's features. Several papers have been published on the best validation procedures for translating biomarkers to real life. The history of cholesterol concentration is extensively discussed as a reliable example of a biomarker that - after a long and controversial validation process - is currently used in clinical practice. The frequency of micronucleated cells is a reliable biomarker for the pathogenesis of cancer and other non-communicable diseases, and the link with clinical outcomes is substantiated by epidemiological evidence and strong mechanistic basis. Available literature concerning the use of the micronucleus assay in clinical studies is discussed, and a suitable three-levels road-map driving this biomarker towards clinical practice is presented. Under the perspective of personalized medicine, the use of the micronucleus assays can play a decisive role in addressing preventive and therapeutic strategies of chronic diseases. In many cases the MN assay is either currently used in clinical practice or classified as adequate to consider translation into practice. The roadmap to clinical validation of the micronucleus assay finds inspiration from the history of biomarkers such as cholesterol, which clearly showed that the evidence from prospective studies or RCTs is critical to achieve the required level of trust from the healthcare profession. (307 words).
Collapse
Affiliation(s)
- Stefano Bonassi
- Unit of Clinical and Molecular Epidemiology, IRCSS San Raffaele Roma, Via di Val Cannuta, 247, Rome, 00166, Italy; Department of Human Sciences and Quality of Life Promotion, San Raffaele University, Via di Val Cannuta, 247, Rome, 00166, Italy.
| | - Michael Fenech
- Genome Health Foundation, North Brighton, SA, 5048, Australia; University of South Australia, School of Pharmacy and Medical Sciences, Adelaide, SA, 5000, Australia; Universiti Kebangsaan Malaysia, Bangi, Selangor, 43600, Malaysia.
| |
Collapse
|