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Hasani M, Alinia SP, Khazdouz M, Sobhani S, Mardi P, Ejtahed HS, Qorbani M. Oxidative balance score and risk of cancer: a systematic review and meta-analysis of observational studies. BMC Cancer 2023; 23:1143. [PMID: 38001409 PMCID: PMC10675899 DOI: 10.1186/s12885-023-11657-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Accepted: 11/20/2023] [Indexed: 11/26/2023] Open
Abstract
BACKGROUND The oxidative balance score (OBS) has been utilized to assess the overall pro- and antioxidant exposure status in various chronic diseases. The current meta-analysis was carried out to pool the association between OBS and the risk of cancer. METHODS We systematically searched the Web of Science, PubMed, Scopus, Embase, and Google Scholar up to August 2023. All observational studies which evaluated the association of OBS with the risk of cancers were included. There was no time of publication or language restrictions. Heterogeneity between studies was assessed using the Chi-square-based Q-test and the I2. A random-effects model meta-analysis was conducted to estimate the pooled effect sizes. Possible sources of heterogeneity were explored by subgroup and meta-regression analysis. RESULTS Totally, 15 studies (9 case-control and 6 cohorts) were eligible for meta-analysis. Random effect model meta-analysis of case-control studies showed that higher OBS significantly decreases the odds of cancers (pooled OR: 0.64, 95% CI: 0.54, 0.74). In the cohort studies, the association of OBS with the risk of cancers was not significant (pooled HR: 0.97, 95% CI: 0.80,1.18). The subgroup analysis showed that cancer type and gender were the potential sources of heterogeneity. CONCLUSION Our results show an inverse and significant association between higher OBS and odds of colorectal cancers in case-control and cohort studies. In the case of prostate cancer in cohort studies, our results did not align with the hypothesis. Considering the importance of diet and antioxidant balance in the conditions of malignancy, it is suggested to conduct more comprehensive studies with standard measurement methods to obtain conclusive results.
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Affiliation(s)
- Motahareh Hasani
- Department of Nutrition, School of Public Health, Golestan University of Medical Sciences, Gorgan, Iran
| | | | - Maryam Khazdouz
- Growth and Development Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Sahar Sobhani
- Non-Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Parham Mardi
- Non-Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Hanieh-Sadat Ejtahed
- Obesity and Eating Habits Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
| | - Mostafa Qorbani
- Non-Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran.
- Chronic Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
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2
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Izzo LG, El Nakhel C, Rouphael Y, Proietti S, Paglialunga G, Moscatello S, Battistelli A, Iovane M, Romano LE, De Pascale S, Aronne G. Applying productivity and phytonutrient profile criteria in modelling species selection of microgreens as Space crops for astronaut consumption. Front Plant Sci 2023; 14:1210566. [PMID: 37636122 PMCID: PMC10450622 DOI: 10.3389/fpls.2023.1210566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Accepted: 07/06/2023] [Indexed: 08/29/2023]
Abstract
Introduction Long-duration missions in outer Space will require technologies to regenerate environmental resources such as air and water and to produce food while recycling consumables and waste. Plants are considered the most promising biological regenerators to accomplish these functions, due to their complementary relationship with humans. Plant cultivation for Space starts with small plant growth units to produce fresh food to supplement stowed food for astronauts' onboard spacecrafts and orbital platforms. The choice of crops must be based on limiting factors such as time, energy, and volume. Consequently, small, fast-growing crops are needed to grow in microgravity and to provide astronauts with fresh food rich in functional compounds. Microgreens are functional food crops recently valued for their color and flavor enhancing properties, their rich phytonutrient content and short production cycle. Candidate species of microgreens to be harvested and eaten fresh by crew members, belong to the families Brassicaceae, Asteraceae, Chenopodiaceae, Lamiaceae, Apiaceae, Amarillydaceae, Amaranthaceae, and Cucurbitaceae. Methods In this study we developed and applied an algorithm to objectively compare numerous genotypes of microgreens intending to select those with the best productivity and phytonutrient profile for cultivation in Space. The selection process consisted of two subsequent phases. The first selection was based on literature data including 39 genotypes and 25 parameters related to growth, phytonutrients (e.g., tocopherol, phylloquinone, ascorbic acid, polyphenols, lutein, carotenoids, violaxanthin), and mineral elements. Parameters were implemented in a mathematical model with prioritization criteria to generate a ranking list of microgreens. The second phase was based on germination and cultivation tests specifically designed for this study and performed on the six top species resulting from the first ranking list. For the second selection, experimental data on phytonutrients were expressed as metabolite production per day per square meter. Results and discussion In the final ranking list radish and savoy cabbage resulted with the highest scores based on their productivity and phytonutrient profile. Overall, the algorithm with prioritization criteria allowed us to objectively compare candidate species and obtain a ranking list based on the combination of numerous parameters measured in the different species. This method can be also adapted to new species, parameters, or re-prioritizing the parameters for specific selection purposes.
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Affiliation(s)
- Luigi Gennaro Izzo
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy
| | - Christophe El Nakhel
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy
| | - Youssef Rouphael
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy
| | - Simona Proietti
- National Research Council of Italy, Research Institute on Terrestrial Ecosystems, Porano, Italy
| | - Gabriele Paglialunga
- National Research Council of Italy, Research Institute on Terrestrial Ecosystems, Porano, Italy
| | - Stefano Moscatello
- National Research Council of Italy, Research Institute on Terrestrial Ecosystems, Porano, Italy
| | - Alberto Battistelli
- National Research Council of Italy, Research Institute on Terrestrial Ecosystems, Porano, Italy
| | - Maurizio Iovane
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy
| | - Leone Ermes Romano
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy
| | - Stefania De Pascale
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy
| | - Giovanna Aronne
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy
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3
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Molz P, Dallemole DR, Molz WA, Priebe Steffens J, Wildner Maluf S, Baroni Cruz D, Rieger A, Salvador M, Prá D, Rech Franke SI. Iron supplementation does not aggravate impaired glucose tolerance and sugar overload-induced genotoxicity in rats. Mol Cell Biochem 2022:10.1007/s11010-022-04625-8. [PMID: 36564575 DOI: 10.1007/s11010-022-04625-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 11/28/2022] [Indexed: 12/25/2022]
Abstract
High sugar intake is a major risk factor for metabolic disorders. Genotoxicity is an important factor in diabetes onset, and iron (Fe) may be an aggravating element. However, this relationship is still poorly established. Thus, this study evaluated whether Fe supplementation could aggravate obesity, impaired glucose tolerance, and sugar overload-induced genotoxicity in rats. A total of 24 rats were treated with different diets: standard diet (SD, n = 8), invert sugar overload (320 g/L, HSD, n = 8), or Fe plus invert sugar overload (2.56 mg/L of Fe2+, Fe-HSD, n = 8) for four months. After treatment, the Fe-HSD group showed no excessive weight gain or impaired glucose tolerance. DNA damage in blood, as assessed by comet assay, gradually increased in HSD during treatment (p < 0.001), whereas Fe-HSD showed a nonlinear increase in DNA damage. Moreover, Fe-HSD presented 0.6-fold more DNA damage compared with SD (p = 0.0055) in the 1st month of treatment. At months 2 and 3, results show a ≥ 1.4-fold increase in HSD and Fe-HSD DNA damage, respectively, compared with SD (p < 0.01). At the end of the experiment, only HSD DNA damage differed from SD (1.5-fold more, p = 0.0196). Fe supplementation did not aggravate the invert sugar-induced DNA damage (p > 0.05). In the pancreas, results showed no differences in DNA damage. Mutagenicity, evaluated by micronucleus testing, was not observed regardless of treatment (p = 0.428). Fe supplementation, in the evaluated concentration, did not aggravate weight gain, impaired glucose tolerance, and sugar overload-induced genotoxicity in rats.
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Affiliation(s)
- Patrícia Molz
- Laboratory of Experimental Nutrition, University of Santa Cruz do Sul, Santa Cruz do Sul, Brazil.,Graduate Program in Health Promotion, University of Santa Cruz do Sul, Santa Cruz do Sul, RS, Brazil.,Graduate Program in Biosciences, Federal University of Health Sciences of Porto Alegre, Porto Alegre, RS, Brazil
| | - Danieli Rosane Dallemole
- Laboratory of Histology and Pathology, University of Santa Cruz do Sul, Santa Cruz do Sul, Brazil
| | - Walter Augusto Molz
- Medicine Course, Department of Biology and Pharmacy, University of Santa Cruz do Sul, Santa Cruz do Sul, Brazil
| | - Juliana Priebe Steffens
- Laboratory of Experimental Nutrition, University of Santa Cruz do Sul, Santa Cruz do Sul, Brazil
| | - Sharbel Wildner Maluf
- Laboratory of Cytogenetics and Genome Stability, Graduate Program in Pharmacy and University Hospital, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Dennis Baroni Cruz
- Medicine Course, Department of Biology and Pharmacy, University of Santa Cruz do Sul, Santa Cruz do Sul, Brazil
| | - Alexandre Rieger
- Graduate Program in Health Promotion, University of Santa Cruz do Sul, Santa Cruz do Sul, RS, Brazil
| | - Mirian Salvador
- Laboratory of Oxidative Stress and Antioxidants, University of Caxias do Sul, Caxias do Sul, Brazil
| | - Daniel Prá
- Laboratory of Experimental Nutrition, University of Santa Cruz do Sul, Santa Cruz do Sul, Brazil.,Graduate Program in Health Promotion, University of Santa Cruz do Sul, Santa Cruz do Sul, RS, Brazil
| | - Silvia Isabel Rech Franke
- Laboratory of Experimental Nutrition, University of Santa Cruz do Sul, Santa Cruz do Sul, Brazil. .,Graduate Program in Health Promotion, University of Santa Cruz do Sul, Santa Cruz do Sul, RS, Brazil.
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4
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Hernández-Ruiz Á, García-Villanova B, Guerra-Hernández EJ, Carrión-García CJ, Amiano P, Sánchez MJ, Molina-Montes E. Oxidative Balance Scores (OBSs) Integrating Nutrient, Food and Lifestyle Dimensions: Development of the NutrientL-OBS and FoodL-OBS. Antioxidants (Basel) 2022; 11:antiox11020300. [PMID: 35204183 PMCID: PMC8868253 DOI: 10.3390/antiox11020300] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/24/2022] [Accepted: 01/28/2022] [Indexed: 11/17/2022] Open
Abstract
Oxidative Balance Scores (OBS) are tools that allow us to assess the individual’s antioxidant state by ranking both antioxidant and pro-oxidant components of dietary and lifestyle factors. Our aim was to develop novel OBSs accounting for either the global supply of nutrient antioxidants in the diet, or the intake of antioxidant-rich foods, in combination with lifestyle factors. Pro-oxidant factors were also considered. Within two centers of the Spanish European Prospective Investigation into Cancer and Nutrition (EPIC) study, EPIC-Granada and EPIC-Gipuzkoa (N = 14,756 participants), we developed the Nurient, Food and Lifestyle OBS (NutrientL-OBS and FoodL-OBS), and their simplified versions (solely with dietary or lifestyle factors, the Nutrient-OBS, Food-OBS and L-OBS). Their antioxidant potential was evaluated considering their relationship with: (i) 20 scores of adherence to the Mediterranean Diet (MD); and, (ii) 25 biomarkers of antioxidant nutrients (ascorbic acid, β-carotene, etc.), inflammation (CRP, TNF-alpha, etc.) and oxidative stress (uric acid), among 210 participants. Spearman correlation and multivariate linear regression analyses were applied to analyze these associations. Some statistically significant relationships were encountered between the NutrientL-OBS and the FoodL-OBS with the MD scores, and with ascorbic acid (per one-unit increase in OBS: β = 0.012 and 0.015; p = 0.022 and 0.008, respectively) and CRP (per one-unit increase in both OBS: β = −0.02; p = 0.02); the latter appeared to be restricted to the OBS´s lifestyle components. In conclusion, the NutrientL- and FoodL-OBSs and their sub-versions are related to antioxidant-rich dietary patterns and to biomarkers of antioxidant nutrient intake and inflammation, supporting that these tools are valid to assess the individual´s oxidative/antioxidant status.
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Affiliation(s)
- Ángela Hernández-Ruiz
- Department of Nutrition and Food Science, Faculty of Pharmacy, Campus Universitario de Cartuja S/N, University of Granada, 18071 Granada, Spain; (Á.H.-R.); (E.J.G.-H.); (C.J.C.-G.); (E.M.-M.)
- Nutrition and Food Science Doctorate Program (RD 99/2011), University of Granada, 18071 Granada, Spain
- Iberoamerican Nutrition Foundation (FINUT), Armilla, 18016 Granada, Spain
| | - Belén García-Villanova
- Department of Nutrition and Food Science, Faculty of Pharmacy, Campus Universitario de Cartuja S/N, University of Granada, 18071 Granada, Spain; (Á.H.-R.); (E.J.G.-H.); (C.J.C.-G.); (E.M.-M.)
- Correspondence: ; Tel.: +34-958-243867
| | - Eduardo J. Guerra-Hernández
- Department of Nutrition and Food Science, Faculty of Pharmacy, Campus Universitario de Cartuja S/N, University of Granada, 18071 Granada, Spain; (Á.H.-R.); (E.J.G.-H.); (C.J.C.-G.); (E.M.-M.)
| | - Cayetano Javier Carrión-García
- Department of Nutrition and Food Science, Faculty of Pharmacy, Campus Universitario de Cartuja S/N, University of Granada, 18071 Granada, Spain; (Á.H.-R.); (E.J.G.-H.); (C.J.C.-G.); (E.M.-M.)
- Nutrition and Food Science Doctorate Program (RD 99/2011), University of Granada, 18071 Granada, Spain
| | - Pilar Amiano
- Ministry of Health of the Basque Government, Sub Directorate for Public Health and Addictions of Gipuzkoa, 20014 San Sebastian, Spain;
- Epidemiology of Chronic and Communicable Diseases Group, Biodonostia Health Research Institute, 20014 San Sebastian, Spain
- CIBER of Epidemiology and Public Health (CIBERESP), 28029 Madrid, Spain;
| | - María-José Sánchez
- CIBER of Epidemiology and Public Health (CIBERESP), 28029 Madrid, Spain;
- Instituto de Investigación Biosanitaria ibs.GRANADA, 18012 Granada, Spain
- Andalusian School of Public Health (EASP), 28029 Granada, Spain
- Department of Preventive Medicine and Public Health, University of Granada, 18071 Granada, Spain
| | - Esther Molina-Montes
- Department of Nutrition and Food Science, Faculty of Pharmacy, Campus Universitario de Cartuja S/N, University of Granada, 18071 Granada, Spain; (Á.H.-R.); (E.J.G.-H.); (C.J.C.-G.); (E.M.-M.)
- CIBER of Epidemiology and Public Health (CIBERESP), 28029 Madrid, Spain;
- Instituto de Investigación Biosanitaria ibs.GRANADA, 18012 Granada, Spain
- Biomedical Research Centre, Institute of Nutrition and Food Technology (INYTA) ‘José Mataix’, University of Granada, 18071 Granada, Spain
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5
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Abstract
Iron overload, a high risk factor for many diseases, is seen in almost all human chronic and common diseases. Iron chelating agents are often used for treatment but, at present, most of these have a narrow scope of application, obvious side effects, and other disadvantages. Recent studies have shown that flavonoids can affect iron status, reduce iron deposition, and inhibit the lipid peroxidation process caused by iron overload. Therefore, flavonoids with iron chelating and antioxidant activities may become potential complementary therapies. In this study, we not only reviewed the research progress of iron overload and the regulation mechanism of flavonoids, but also studied the structural basis and potential mechanism of their function. In addition, the advantages and disadvantages of flavonoids as plant iron chelating agents are discussed to provide a foundation for the prevention and treatment of iron homeostasis disorders using flavonoids.
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Affiliation(s)
- Xiaomin Wang
- College of First Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Ye Li
- College of First Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Li Han
- Shandong Academy of Chinese Medicine, Jinan, China
| | - Jie Li
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Cun Liu
- College of First Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Changgang Sun
- Department of Oncology, Weifang Traditional Chinese Hospital, Weifang, China.,Qingdao Academy of Chinese Medical Sciences, Shandong University of Traditional Chinese Medicine, Qingdao, China
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6
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Rasool M, Malik A, Waquar S, Ain QT, Rasool R, Asif M, Anfinan N, Haque A, Alam H, Ahmed S, Hamid Hamdard M. Assessment of clinical variables as predictive markers in the development and progression of colorectal cancer. Bioengineered 2021; 12:2288-2298. [PMID: 34096454 PMCID: PMC8806642 DOI: 10.1080/21655979.2021.1933680] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Colorectal cancer (CRC) is graded as one of the most common cancer. It accounts for the second leading cause of cancer deaths worldwide. The present study intends to investigate the role and importance of different biochemical variables in the development of colorectal cancer. In this cross-sectional study we recruited ninety-one patients diagnosed with colorectal cancer and fifty-three age-sex matched controls from June 2017 to June 2018. Different variables i.e. SOD, GSH, CAT, MDA, TGF, VEGF, TNF, ILs, MMPs, etc., were estimated with the help of their respective methods. Our findings suggest a significant increase in the levels of different inflammatory and stress-related markers. The NFκB, TGF-β, VEGFβ, 8OHdG, IsoP-2α were significantly found to be increased in patients with colon cancer (0.945 ± 0.067 μg/ml, 18.59 ± 1.53 pg/ml, 99.35 ± 4.29 pg/ml, 21.26 ± 1.29 pg/ml, 102.25 ± 4.25 pg/ml) as compared to controls (0.124 ± 0.024 μg/ml, 8.26 ± 0.88 pg/ml, 49.58 ± 2.62 pg/ml, 0.93 ± 0.29 pg/ml, 19.65 ± 3.19 pg/ml). Notably, the levels of different antioxidants were shown to be significantly lower in patients of colon cancer. The present study concluded that excessive oxidative stress and lipid peroxidation result in a decrease in the antioxidative capacity of cells which may influence diverse signaling cascades including NF-KB, which results in DNA modification and gene transcription that ultimately involved in the progression of colon cancer.
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Affiliation(s)
- Mahmood Rasool
- Center of Excellence in Genomic Medicine Research, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia.,Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Arif Malik
- Institute of Molecular Biology and Biotechnology, the University of Lahore, Lahore, Pakistan
| | - Sulayman Waquar
- Institute of Molecular Biology and Biotechnology, the University of Lahore, Lahore, Pakistan
| | - Qura Tul Ain
- Institute of Molecular Biology and Biotechnology, the University of Lahore, Lahore, Pakistan
| | - Rabia Rasool
- Institute of Molecular Biology and Biotechnology, the University of Lahore, Lahore, Pakistan
| | - Muhammad Asif
- Department of Biotechnology, BUITEMS, Quetta, Pakistan.,Oric, Buitems, Quetta, Pakistan
| | - Nisreen Anfinan
- Gynecology Oncology Unit, Obstetrics and Gynaecology Department, Faculty of Medicine, King Abdulaziz University Hospital, Jeddah, Saudi Arabia
| | - Absarul Haque
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia.,King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Hina Alam
- Pakistan Institute of Medical Sciences, Islamabad, Pakistan
| | - Sagheer Ahmed
- Shifa College of Pharmaceutical Sciences, Shifa Tameer-e-Millat University Islamabad
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7
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Gamage SMK, Lee KTW, Dissabandara DLO, Lam AKY, Gopalan V. Dual role of heme iron in cancer; promotor of carcinogenesis and an inducer of tumour suppression. Exp Mol Pathol 2021; 120:104642. [PMID: 33905708 DOI: 10.1016/j.yexmp.2021.104642] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 03/14/2021] [Accepted: 04/22/2021] [Indexed: 02/06/2023]
Abstract
PURPOSE Heme is a crucial compound for cell survival but is also equipped with the potential to be toxic and carcinogenic to cells. However, with the recent advancement of knowledge regarding ferroptosis, the iron mediated cell death, heme can be postulated to induce tumour suppression through ferroptosis. This review summarizes the literature on the carcinogenic and anticarcinogenic properties of heme with specific emphasis on the alterations observed on heme synthesis, metabolism and transport in tumour cells. METHODS Literature search was performed in PubMed data base using the MeSH terms 'heme iron or heme', 'cancer or carcinogenesis' and 'tumour suppression' or 'anticarcinogenic properties. Out of 189 results, 166 were relevant to the current review. RESULTS Heme supports carcinogenesis via modulation of immune cell function, promoting inflammation and gut dysbiosis, impeding tumour suppressive potential of P53 gene, promoting cellular cytotoxicity and reactive oxygen species generation and modulating Nfr2 /HO-1 axis. The carcinogenic and anticarcinogenic properties of heme are both dose and oxygen concentration dependant. At low doses, heme is harmless and even helpful in maintaining the much-needed redox balance within the cell. However, when heme exceeds physiological concentrations, it could initiate and propagate carcinogenesis, due to its ability to produce reactive oxygen species (ROS). The same phenomenon of heme mediated ROS generation could be manipulated to initiate tumour suppression via ferroptosis, but the therapeutic doses are yet to be determined. CONCLUSION Heme iron possesses powerful carcinogenic and anticarcinogenic properties which are dosage and oxygen availability dependant.
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Affiliation(s)
- Sujani M K Gamage
- Cancer Molecular Pathology, School of Medicine, Griffith University, Gold Coast, Queensland 4222, Australia; Department of Anatomy, Faculty of Medicine, University of Peradeniya, Sri Lanka
| | - Katherine T W Lee
- Cancer Molecular Pathology, School of Medicine, Griffith University, Gold Coast, Queensland 4222, Australia
| | - D Lakal O Dissabandara
- Cancer Molecular Pathology, School of Medicine, Griffith University, Gold Coast, Queensland 4222, Australia
| | - Alfred King-Yin Lam
- Cancer Molecular Pathology, School of Medicine, Griffith University, Gold Coast, Queensland 4222, Australia.
| | - Vinod Gopalan
- Cancer Molecular Pathology, School of Medicine, Griffith University, Gold Coast, Queensland 4222, Australia.
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8
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Mao Z, Prizment AE, Lazovich D, Gibbs DC, Bostick RM. Dietary and Lifestyle Oxidative Balance Scores and Incident Colorectal Cancer Risk among Older Women; the Iowa Women's Health Study. Nutr Cancer 2020; 73:2323-2335. [PMID: 32981353 DOI: 10.1080/01635581.2020.1821904] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
BACKGROUND Basic science literature strongly supports a role of oxidative stress in colorectal cancer (CRC) etiology, but in epidemiologic studies, associations of most individual exposures with CRC have been weak or inconsistent. However, recent epidemiologic evidence suggests that the collective effects of these exposures on oxidative balance and CRC risk may be substantial. METHODS Using food frequency and lifestyle questionnaire data from the prospective Iowa Women's Health Study (1986-2012), we investigated associations of 11-component dietary and 4-component lifestyle oxidative balance scores (OBS) with incident CRC using multivariable Cox proportional hazards regression. RESULTS Of the 33,736 cancer-free women aged 55-69 years at baseline, 1,632 developed CRC during follow-up. Among participants in the highest relative to the lowest dietary and lifestyle OBS quintiles (higher anti-oxidant relative to pro-oxidant exposures), the adjusted hazard ratios (HRs) and their 95% confidence intervals (CI) were, respectively, 0.77 (0.63, 0.94) (Ptrend=0.02) and 0.61 (0.52, 0.71) (Ptrend<0.0001). Among those in the highest relative to the lowest joint lifestyle/dietary OBS quintile, the HR was 0.45 (95% CI 0.26, 0.77). CONCLUSIONS Our findings suggest that a predominance of antioxidant over pro-oxidant dietary and lifestyle exposures-separately and especially jointly-may be inversely associated with CRC risk among older women.
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Affiliation(s)
- Ziling Mao
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, Georgia, USA
| | - Anna E Prizment
- Division of Hematology, Oncology and Transplantation, Medical School, University of Minnesota, Minneapolis, Minnesota, USA.,Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota, USA
| | - DeAnn Lazovich
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota, USA.,Division of Epidemiology and Community Health, University of Minnesota, Minneapolis, Minnesota, USA
| | - David C Gibbs
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, Georgia, USA
| | - Roberd M Bostick
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, Georgia, USA.,Winship Cancer Institute, Emory University, Atlanta, Georgia, USA
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9
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Kostka T, Fohrer J, Guigas C, Briviba K, Seiwert N, Fahrer J, Steinberg P, Empl MT. Synthesis and in vitro characterization of the genotoxic, mutagenic and cell-transforming potential of nitrosylated heme. Arch Toxicol 2020; 94:3911-3927. [PMID: 32671443 PMCID: PMC7603461 DOI: 10.1007/s00204-020-02846-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 07/09/2020] [Indexed: 12/18/2022]
Abstract
Data from epidemiological studies suggest that consumption of red and processed meat is a factor contributing to colorectal carcinogenesis. Red meat contains high amounts of heme, which in turn can be converted to its nitrosylated form, NO-heme, when adding nitrite-containing curing salt to meat. NO-heme might contribute to colorectal cancer formation by causing gene mutations and could thereby be responsible for the association of (processed) red meat consumption with intestinal cancer. Up to now, neither in vitro nor in vivo studies characterizing the mutagenic and cell transforming potential of NO-heme have been published due to the fact that the pure compound is not readily available. Therefore, in the present study, an already existing synthesis protocol was modified to yield, for the first time, purified NO-heme. Thereafter, newly synthesized NO-heme was chemically characterized and used in various in vitro approaches at dietary concentrations to determine whether it can lead to DNA damage and malignant cell transformation. While NO-heme led to a significant dose-dependent increase in the number of DNA strand breaks in the comet assay and was mutagenic in the HPRT assay, this compound tested negative in the Ames test and failed to induce malignant cell transformation in the BALB/c 3T3 cell transformation assay. Interestingly, the non-nitrosylated heme control showed similar effects, but was additionally able to induce malignant transformation in BALB/c 3T3 murine fibroblasts. Taken together, these results suggest that it is the heme molecule rather than the NO moiety which is involved in driving red meat-associated carcinogenesis.
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Affiliation(s)
- Tina Kostka
- Institute for Food Toxicology, University of Veterinary Medicine Hannover, Hannover, Germany.
- Institute of Food Science and Human Nutrition, Leibniz University Hannover, Hannover, Germany.
| | - Jörg Fohrer
- Institute of Organic Chemistry, Leibniz University Hannover, Hannover, Germany
| | - Claudia Guigas
- Max Rubner-Institut, Federal Research Institute of Nutrition and Food, Karlsruhe, Germany
| | - Karlis Briviba
- Max Rubner-Institut, Federal Research Institute of Nutrition and Food, Karlsruhe, Germany
| | - Nina Seiwert
- Division of Food Chemistry and Toxicology, Department of Chemistry, Technical University of Kaiserslautern, Kaiserslautern, Germany
| | - Jörg Fahrer
- Division of Food Chemistry and Toxicology, Department of Chemistry, Technical University of Kaiserslautern, Kaiserslautern, Germany
| | - Pablo Steinberg
- Institute for Food Toxicology, University of Veterinary Medicine Hannover, Hannover, Germany
- Max Rubner-Institut, Federal Research Institute of Nutrition and Food, Karlsruhe, Germany
| | - Michael T Empl
- Institute for Food Toxicology, University of Veterinary Medicine Hannover, Hannover, Germany
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Lee DY, Yun SM, Song MY, Jung K, Kim EH. Cyanidin Chloride Induces Apoptosis by Inhibiting NF-κB Signaling through Activation of Nrf2 in Colorectal Cancer Cells. Antioxidants (Basel) 2020; 9:E285. [PMID: 32230772 DOI: 10.3390/antiox9040285] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 03/20/2020] [Accepted: 03/25/2020] [Indexed: 12/15/2022] Open
Abstract
Colorectal cancer (CRC) is the third most common cancer worldwide and a leading cause of cancer-related deaths in developed countries. Anthocyanins are a class of flavonoids, widely distributed in food, exhibiting important biological effects. Cyanidin chloride (CyCl) is the common type of anthocyanin with antioxidative and anti-inflammatory potential. The present study aimed to investigate the molecular mechanisms underlying the chemotherapeutic effects of CyCl in colorectal cancer cells. We found that CyCl treatment induced apoptosis as well as a significant inhibition of cellular proliferation and colony formation in three colon cancer HCT116, HT29, and SW620 cells. In addition, CyCl suppressed nuclear factor-kappa B (NF-κB) signaling and induced the activation of the nuclear factor erythroid 2-related factor 2 (Nrf2) pathway in tumor necrosis factor-alpha (TNF-α)-stimulated colon cancer cells. Nrf2 and NF-κB are two key transcription factors regulating antioxidative responses and cellular proliferation, respectively. In this study, knockdown of Nrf2 by small interfering RNA (siRNA) transfection inhibited the effect of CyCl on NF-κB signaling and apoptosis, suggesting that there is functional crosstalk between Nrf2 and NF-κB. Our findings demonstrate the important role of Nrf2 in inducing apoptosis through the involvement of NF-κB signaling in colorectal cancer cells, suggesting that CyCl may be used as a potential therapeutic agent for CRC.
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Sornjai W, Nguyen Van Long F, Pion N, Pasquer A, Saurin JC, Marcel V, Diaz JJ, Mertani HC, Smith DR. Iron and hepcidin mediate human colorectal cancer cell growth. Chem Biol Interact 2020; 319:109021. [PMID: 32092301 DOI: 10.1016/j.cbi.2020.109021] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 01/24/2020] [Accepted: 02/20/2020] [Indexed: 12/20/2022]
Abstract
High dietary iron intake is a risk factor for the development of colorectal cancer. However, how iron subsequently impacts the proliferation of colorectal cancer cells remains unclear. This study determined the expression of six iron regulatory genes in twenty-one human colorectal cancer (CRC) biopsies and matched normal colonic tissue. The results show that only hepcidin and ferritin heavy chain expression were increased in CRC biopsies as compared to matched normal tissues. Four established human CRC cell lines, HT-29, HCT-116, SW-620 and SW-480 were subsequently examined for their growth in response to increasing concentrations of iron, and iron depletion. Real time cell growth assay showed a significant inhibitory effect of acute iron loading in HCT-116 cells (IC50 = 258.25 μM at 72 h), and no significant effects in other cell types. However, ten week treatment with iron significantly reduced HT-29 and SW-620 cell growth, whereas no effect was seen in HCT-116 and SW-480 cells. Intracellular labile iron depletion induced the complete growth arrest and detachment of all of the CRC cell types except for the SW-620 cell line which was not affected in its growth. Treatment of starved CRC cells with hepcidin, the major regulator of iron metabolism, induced a significant stimulation of HT-29 cell growth but did not affect the growth of the other cell types. Collectively these results show that iron is central to CRC cell growth in a manner that is not identical between acute and chronic loading, and that is specific to the CRC cell type.
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Affiliation(s)
- Wannapa Sornjai
- Institute of Molecular Biosciences, Mahidol University, 25/25 Phuttamonthon Sai 4, Salaya, Nakon Pathom, 73170, Thailand
| | - Flora Nguyen Van Long
- Centre de Recherche en Cancérologie de Lyon, UMR INSERM 1052-CNRS 5286, Centre Léon Bérard, Université Claude Bernard Lyon I, Université de Lyon, Lyon, 69008, France
| | - Nathalie Pion
- Centre de Recherche en Cancérologie de Lyon, UMR INSERM 1052-CNRS 5286, Centre Léon Bérard, Université Claude Bernard Lyon I, Université de Lyon, Lyon, 69008, France
| | - Arnaud Pasquer
- Centre de Recherche en Cancérologie de Lyon, UMR INSERM 1052-CNRS 5286, Centre Léon Bérard, Université Claude Bernard Lyon I, Université de Lyon, Lyon, 69008, France
| | - Jean-Christophe Saurin
- Centre de Recherche en Cancérologie de Lyon, UMR INSERM 1052-CNRS 5286, Centre Léon Bérard, Université Claude Bernard Lyon I, Université de Lyon, Lyon, 69008, France
| | - Virginie Marcel
- Centre de Recherche en Cancérologie de Lyon, UMR INSERM 1052-CNRS 5286, Centre Léon Bérard, Université Claude Bernard Lyon I, Université de Lyon, Lyon, 69008, France
| | - Jean Jacques Diaz
- Centre de Recherche en Cancérologie de Lyon, UMR INSERM 1052-CNRS 5286, Centre Léon Bérard, Université Claude Bernard Lyon I, Université de Lyon, Lyon, 69008, France
| | - Hichem C Mertani
- Centre de Recherche en Cancérologie de Lyon, UMR INSERM 1052-CNRS 5286, Centre Léon Bérard, Université Claude Bernard Lyon I, Université de Lyon, Lyon, 69008, France.
| | - Duncan R Smith
- Institute of Molecular Biosciences, Mahidol University, 25/25 Phuttamonthon Sai 4, Salaya, Nakon Pathom, 73170, Thailand.
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Byrd DA, Judd SE, Flanders WD, Hartman TJ, Fedirko V, Bostick RM. Development and Validation of Novel Dietary and Lifestyle Inflammation Scores. J Nutr 2019; 149:2206-2218. [PMID: 31373368 PMCID: PMC6887697 DOI: 10.1093/jn/nxz165] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 04/03/2019] [Accepted: 06/19/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Chronically higher inflammation, which may partly result from diet and lifestyle, is implicated in risk for multiple chronic diseases. The dietary inflammatory index (DII) and empirical dietary inflammatory pattern (EDIP), developed to characterize dietary contributions to systemic inflammation, have several limitations. There are no scores to characterize contributions of lifestyle to inflammation. OBJECTIVES To reflect dietary/lifestyle contributions to inflammation, we developed novel, inflammation biomarker panel-weighted, dietary (DIS) and lifestyle (LIS) inflammation scores in a subset (n = 639) of the Reasons for Geographic and Racial Differences in Stroke Study (REGARDS) cohort. METHODS We selected a priori 19 food groups and 4 lifestyle characteristics to comprise the DIS and LIS, respectively. We calculated the components' weights based on their strengths of association with an inflammation biomarker score [comprising high-sensitivity C-reactive protein (hsCRP), IL-6, IL-8, and IL-10] using multivariable linear regression. The sums of the weighted components constitute the scores, such that higher scores reflect, on balance, more proinflammatory exposures. We calculated the DIS, LIS, DII, and EDIP with cross-sectional data from the remaining REGARDS cohort ( n = 14,210 with hsCRP measurements) and 2 other study populations with hsCRP and/or an 8-component inflammation biomarker panel, and investigated their associations with circulating inflammation biomarker concentrations using multivariable logistic regression. RESULTS In REGARDS, those in the highest relative to the lowest DIS, LIS, DII, and EDIP quintiles had statistically significant 1.66-, 4.29-, 1.56-, and 1.32-fold higher odds of a high hsCRP concentration (>3 mg/dL), respectively (all P-trend < 0.001). Those in the highest relative to the lowest joint DIS/LIS quintile had a statistically significant 7.26-fold higher odds of a high hsCRP concentration. Similar findings were noted in the other 2 validation populations. CONCLUSION Our results support that dietary and lifestyle exposures collectively contribute substantially to systemic inflammation, and support the use of our novel DIS and LIS.
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Affiliation(s)
- Doratha A Byrd
- Department of Epidemiology, Emory University Rollins School of Public Health, Atlanta, GA, USA
| | - Suzanne E Judd
- Department of Biostatistics, University of Alabama at Birmingham School of Public Health, Birmingham, AL, USA
| | - W Dana Flanders
- Department of Epidemiology, Emory University Rollins School of Public Health, Atlanta, GA, USA
| | - Terryl J Hartman
- Department of Epidemiology, Emory University Rollins School of Public Health, Atlanta, GA, USA
- Winship Cancer Institute, Emory University, Atlanta, GA, USA
| | - Veronika Fedirko
- Department of Epidemiology, Emory University Rollins School of Public Health, Atlanta, GA, USA
| | - Roberd M Bostick
- Department of Epidemiology, Emory University Rollins School of Public Health, Atlanta, GA, USA
- Winship Cancer Institute, Emory University, Atlanta, GA, USA
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13
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Bankoglu EE, Kodandaraman G, Stopper H. A systematic review of the use of the alkaline comet assay for genotoxicity studies in human colon-derived cells. Mutation Research/Genetic Toxicology and Environmental Mutagenesis 2019; 845:402976. [DOI: 10.1016/j.mrgentox.2018.10.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 10/21/2018] [Accepted: 10/28/2018] [Indexed: 12/18/2022]
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Hernández-Ruiz Á, García-Villanova B, Guerra-Hernández E, Amiano P, Ruiz-Canela M, Molina-Montes E. A Review of A Priori Defined Oxidative Balance Scores Relative to Their Components and Impact on Health Outcomes. Nutrients 2019; 11:nu11040774. [PMID: 30987200 PMCID: PMC6520884 DOI: 10.3390/nu11040774] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 03/28/2019] [Accepted: 04/01/2019] [Indexed: 12/13/2022] Open
Abstract
Oxidative Balance Scores (OBSs) are tools that have emerged to evaluate the global balance of individuals’ oxidation—reduction status. The aim was to compare OBSs available in the literature regarding their characteristics and associations with chronic diseases in epidemiological studies. Studies that developed OBSs were searched in PubMed until August 2018. A total of 21 OBSs were identified. These OBSs presented different scoring schemes and different types of anti- and pro-oxidant components, including dietary factors (dietary intake and/or nutrient biomarkers), lifestyle factors, and medications. Most OBSs were based on over 10 components, and some included only dietary factors. Few considered weighted components in the score. Only three OBSs were validated as potential surrogates of oxidative balance through inflammation and OS-related biomarkers. Notably, all the OBSs were associated—to a varying degree—with a reduced risk of cardiovascular diseases, chronic kidney disease, colorectal adenomas, and different cancer types (colorectal and breast cancer), as well as with all-cause and cancer-related mortality. For other outcomes, e.g., prostate cancer, contradictory results were reported. In summary, there is a great heterogeneity in the definition of OBSs. Most studies are concordant in supporting that excessive OS reflected by a lower OBS has deleterious effects on health. Unified criteria for defining the proper OBSs, valuable to gauge OS-related aspects of the diet and lifestyle that may lead to adverse health outcomes, are needed.
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Affiliation(s)
- Ángela Hernández-Ruiz
- Department of Nutrition and Bromatology, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain.
- Nutrition and Food Science Doctorate Program (RD 99/2011), University of Granada, 18002 Granada, Spain.
| | - Belén García-Villanova
- Department of Nutrition and Bromatology, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain.
| | - Eduardo Guerra-Hernández
- Department of Nutrition and Bromatology, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain.
| | - Pilar Amiano
- Public Health Division of Gipuzkoa, Biodonostia Research Institute, Health Department, 20014 San Sebastian, Spain.
- CIBER de Epidemiología y Salud Pública, CIBERESP, 28029 Madrid, Spain.
| | - Miguel Ruiz-Canela
- Department of Preventive Medicine and Public Health, University of Navarra, 31003 Pamplona, Spain.
- Medicina Preventiva y Salud Pública, IdiSNA (Instituto de Investigación Sanitaria de Navarra), 31008 Pamplona, Spain.
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), 28029 Madrid, Spain.
| | - Esther Molina-Montes
- Genetic and Molecular Epidemiology Group, Spanish National Cancer Research Centre (CNIO), 28029 Madrid, Spain.
- CIBER de Oncología, CIBERONC, 28029 Madrid, Spain.
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Horniblow RD, Mistry P, Quraishi MN, Beggs AD, Van de Wiele T, Iqbal TH, Tselepis C. The Safety and Tolerability of a Potential Alginate-Based Iron Chelator; Results of A Healthy Participant Study. Nutrients 2019; 11:E674. [PMID: 30901846 PMCID: PMC6471009 DOI: 10.3390/nu11030674] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 03/12/2019] [Accepted: 03/13/2019] [Indexed: 12/16/2022] Open
Abstract
Evidence supporting the ferro-toxic nature of iron in the progression of inflammatory bowel disease (IBD) is becoming well established. A microbial dysbiosis is observed in IBD patients, and intra-luminal colonic-iron is able to support a more pathogenic community of bacteria; whether this is attributed to the development of IBD and how iron could be mediating these microbial changes is still unknown. Dietary fibres are commonly used in pre-biotic supplements to beneficially affect the host by improving the viability of bacterial communities within the colon. Alginates are a class of biopolymers considered as prebiotics due to their fibre-like composition and are able to bind metal cations, in particular, iron. Considering that iron excess is able to negatively alter the microbiome, the use of alginate as a food supplement could be useful in colonic-iron chelation. As such, this first-in-man study aimed to assess whether the use of alginate as a dietary iron chelator was both safe and well tolerated. In addition, the impact of alginate on the microbiome and iron levels was assessed by using an intestinal model SHIME (Simulation of the Human Intestinal Microbial Ecosystem). Alginate was supplemented into the diets (3 g/day) of healthy volunteers (n = 17) for 28 days. Results from this study suggest that daily ingestion of 3 g alginate was well tolerated with very minor side effects. There were no detrimental changes in a variety of haematological parameters or the intestinal microbiome. The bacterial communities within the SHIME model were also not influenced by iron and or alginate; it is possible that alginate may be susceptible to bacterial or enzymatic degradation within the gastro-intestinal tract.
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Affiliation(s)
- Richard D Horniblow
- Institute of Cancer and Genomic Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
| | - Pritesh Mistry
- Institute of Cancer and Genomic Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
- Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham B15 2TH, UK.
| | - Mohammed N Quraishi
- Institute of Cancer and Genomic Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
- The University of Birmingham Microbiome Treatment Centre, University of Birmingham, Birmingham B15 2TT, UK.
| | - Andrew D Beggs
- Institute of Cancer and Genomic Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
- Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham B15 2TH, UK.
| | - Tom Van de Wiele
- CMET, Center for Microbial Ecology and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Gent, Belgium.
| | - Tariq H Iqbal
- Institute of Cancer and Genomic Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
- Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham B15 2TH, UK.
- The University of Birmingham Microbiome Treatment Centre, University of Birmingham, Birmingham B15 2TT, UK.
| | - Chris Tselepis
- Institute of Cancer and Genomic Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
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Kim HS, Lee DAY, Hur SJ. Effects of Hemin and Heating Temperature on the Mutagenicity and Lipid Oxidation of Pork Batter during In Vitro Human Digestion with Enterobacteria. J Food Prot 2019; 82:93-101. [PMID: 30586324 DOI: 10.4315/0362-028x.jfp-18-273] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The objective of this study was to determine the effects of hemin and heating temperature on the mutagenicity and lipid oxidation of pork batter during in vitro human digestion with enterobacteria. The mutagenicity and lipid oxidation of pork batter increased in the presence of hemin and with increasing temperatures from 60 to 80°C by 17.9 and 23.0% and by 54.6 and 21.2%, respectively. However, the pork batter mutagenicity decreased by 6.09% during in vitro human digestion, whereas lipid oxidation increased by 19.4%. The antioxidant activities of pork batter decreased with hemin and increasing temperature but gradually increased during in vitro human digestion, especially in the large intestine, regardless of the type of enterobacteria ( Escherichia coli and/or Lactobacillus sakei). These results indicate that hemin and temperature are closely related to mutagenicity in pork batter, and in vitro human digestion with enterobacteria could reduce mutagenicity possibly owing to the increase in antioxidant activity by antioxidative enzymes released by enterobacteria.
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Affiliation(s)
- Hyeong Sang Kim
- Department of Animal Science and Technology, Chung-Ang University, 4726 Seodong-daero, Daedeok-myeon, Anseong-si, Gyeonggi 17546, Republic of Korea (ORCID: http://orcid.org/0000-0001-9386-5852 [S.J.H.])
| | - DA Young Lee
- Department of Animal Science and Technology, Chung-Ang University, 4726 Seodong-daero, Daedeok-myeon, Anseong-si, Gyeonggi 17546, Republic of Korea (ORCID: http://orcid.org/0000-0001-9386-5852 [S.J.H.])
| | - Sun Jin Hur
- Department of Animal Science and Technology, Chung-Ang University, 4726 Seodong-daero, Daedeok-myeon, Anseong-si, Gyeonggi 17546, Republic of Korea (ORCID: http://orcid.org/0000-0001-9386-5852 [S.J.H.])
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17
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Bari NK, Barua S, Garg A, Sannigrahi MK, Sinha S. Cellulose-metallothionein matrix for metal binding. Carbohydr Polym 2018; 192:126-34. [DOI: 10.1016/j.carbpol.2018.03.043] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 02/26/2018] [Accepted: 03/15/2018] [Indexed: 11/22/2022]
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18
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Xiao L, Luo G, Tang Y, Yao P. Quercetin and iron metabolism: What we know and what we need to know. Food Chem Toxicol 2018; 114:190-203. [PMID: 29432835 DOI: 10.1016/j.fct.2018.02.022] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Revised: 01/18/2018] [Accepted: 02/07/2018] [Indexed: 12/14/2022]
Abstract
Iron is a life-supporting micronutrient that is required in the human diet, and is essential for maintaining physiological homeostasis. Properly harnessing a redox-active metal such as iron is a great challenge for cells and organisms because an excess of highly reactive iron catalyzes the formation of reactive oxygen species and can lead to cell and tissue damage. Quercetin is a typical flavonoid that is commonly found in fruits and vegetables and has versatile biological effects. From a classical viewpoint, owing to its unique chemical characteristics, quercetin has long been associated with iron metabolism only in the context of its iron-chelating and ROS-scavenging activities. However, within the field of human iron biology, expanding concepts of the roles of quercetin are flourishing, and great strides are being made in understanding the interactions between quercetin and iron. This progress highlights the varied roles of quercetin in iron metabolism, which involve much more than iron chelation alone. A review of these studies provides an ideal context to summarize recent progress and discuss compelling evidence for therapeutic opportunities that could arise from a better understanding of the underlying mechanisms.
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Affiliation(s)
- Lin Xiao
- Department of Nutrition and Food Hygiene, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China; Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China; Ministry of Education Key Laboratory of Environment, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Gang Luo
- Department of Nutrition and Food Hygiene, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China; Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China; Ministry of Education Key Laboratory of Environment, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Yuhan Tang
- Department of Nutrition and Food Hygiene, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China; Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China; Ministry of Education Key Laboratory of Environment, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Ping Yao
- Department of Nutrition and Food Hygiene, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China; Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China; Ministry of Education Key Laboratory of Environment, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Schneider T, Westermann M, Glei M. In vitro uptake and toxicity studies of metal nanoparticles and metal oxide nanoparticles in human HT29 cells. Arch Toxicol 2017; 91:3517-3527. [PMID: 28466231 DOI: 10.1007/s00204-017-1976-z] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 04/26/2017] [Indexed: 11/25/2022]
Abstract
In this paper, we investigated the toxicological behavior of metal nanoparticles (gold, silver) and metal oxide nanoparticles (copper oxide, zinc oxide, titanium dioxide) in vitro in human colorectal adenocarcinoma cells (HT29). We analyzed the cellular uptake by ICP-MS and TEM, the influence on cell viability by MTT assay and trypan blue exclusion test, their effect on DNA damage and/or generation of oxidized bases by alkaline comet assay, and their potential to induce apoptosis by flow cytometry after 24-h nanoparticle treatment with concentrations between 2 and 10 µg/ml. We determined the amount of metal taken up by a single HT29 cell, ranging from 0.02 pg/cell up to 1.39 pg/cell. Cell viability assays showed a significantly decrease for metal oxide nanoparticles using trypan blue exclusion test and for all nanoparticles, except titanium dioxide, using MTT assay. Genotoxic effects after nanoparticle treatment were not observed for the tested concentrations. Apoptosis induction was significantly increased for silver nanoparticles (tested for two sizes) as well as for titanium dioxide and zinc oxide nanoparticles. Our results indicate potential health risks of oral NP uptake by food ingredients or food contamination, making further mechanistic investigations on cellular uptake and toxicity necessary.
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Affiliation(s)
- Thomas Schneider
- Department of Nutritional Toxicology, Institute of Nutrition, Friedrich Schiller University Jena, Dornburger Str. 24, Jena, Germany.
| | - Martin Westermann
- Electron Microscopy Center, University Hospital Jena, Ziegelmühlenweg 1, Jena, Germany
| | - Michael Glei
- Department of Nutritional Toxicology, Institute of Nutrition, Friedrich Schiller University Jena, Dornburger Str. 24, Jena, Germany
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Abstract
Iron is an essential micronutrient that is involved in many redox processes and serves as an integral component in various physiological functions. However, excess iron can cause tissue damage through its pro-oxidative effects, potentiating the development of many diseases such as cancer through the generation of reactive oxidative species. The two major forms of iron in the diet are heme and nonheme iron, both of which are found in several different foods. In addition to natural food sources, intake of nonheme iron may also come from fortified foods or in supplement form. This review summarizes the results of human population studies that have examined the role of dietary iron (heme and nonheme), heme iron alone, and iron from supplements in colorectal carcinogenesis.
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Affiliation(s)
- Joseph H Ashmore
- a Department of Pharmaceutical Sciences , Washington State University , Spokane , Washington , USA
| | - Connie J Rogers
- b Department of Nutritional Sciences , Pennsylvania State University , University Park , Pennsylvania , USA
| | - Shannon L Kelleher
- b Department of Nutritional Sciences , Pennsylvania State University , University Park , Pennsylvania , USA
| | - Samuel M Lesko
- c Northeast Regional Cancer Institute , Scranton , Pennsylvania , USA.,d The Commonwealth Medical College , Scranton , Pennsylvania , USA
| | - Terryl J Hartman
- e Department of Epidemiology , Rollins School of Public Health and Winship Cancer Institute, Emory University , Atlanta , Georgia , USA
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Veljković A, Stanojević G, Branković B, Pavlović D, Stojanović I, Cvetković T, Jevtović T, Sokolović D, Bašić J, Despotović M, Đorđević B, Kocić G. PARAMETERS OF OXIDATIVE STRESS IN COLON CANCER TISSUE. AMM 2016. [DOI: 10.5633/amm.2016.0305] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Glei M, Schneider T, Schlörmann W. Comet assay: an essential tool in toxicological research. Arch Toxicol 2016; 90:2315-36. [DOI: 10.1007/s00204-016-1767-y] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 06/14/2016] [Indexed: 01/02/2023]
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Menon AV, Chang J, Kim J. Mechanisms of divalent metal toxicity in affective disorders. Toxicology 2015; 339:58-72. [PMID: 26551072 DOI: 10.1016/j.tox.2015.11.001] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 10/19/2015] [Accepted: 11/03/2015] [Indexed: 01/01/2023]
Abstract
Metals are required for proper brain development and play an important role in a number of neurobiological functions. The divalent metal transporter 1 (DMT1) is a major metal transporter involved in the absorption and metabolism of several essential metals like iron and manganese. However, non-essential divalent metals are also transported through this transporter. Therefore, altered expression of DMT1 can modify the absorption of toxic metals and metal-induced toxicity. An accumulating body of evidence has suggested that increased metal stores in the brain are associated with elevated oxidative stress promoted by the ability of metals to catalyze redox reactions, resulting in abnormal neurobehavioral function and the progression of neurodegenerative diseases. Metal overload has also been implicated in impaired emotional behavior, although the underlying mechanisms are not well understood with limited information. The current review focuses on psychiatric dysfunction associated with imbalanced metabolism of metals that are transported by DMT1. The investigations with respect to the toxic effects of metal overload on behavior and their underlying mechanisms of toxicity could provide several new therapeutic targets to treat metal-associated affective disorders.
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Affiliation(s)
| | - JuOae Chang
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA 02115, USA
| | - Jonghan Kim
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA 02115, USA.
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Wessels M, Rimkus J, Leyhausen G, Volk J, Geurtsen W. Genotoxic effects of camphorquinone and DMT on human oral and intestinal cells. Dent Mater 2015; 31:1159-68. [PMID: 26187530 DOI: 10.1016/j.dental.2015.06.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Accepted: 06/08/2015] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Released components of oral biomaterials can leach into the oral cavity and may subsequently reach the gastrointestinal tract. Camphorquinone (CQ) is the most common used photoinitiator in resinous restorative materials and is often combined with the co-initiator N,N-dimethyl-p-toluidine (DMT). It has been shown that CQ exerts cytotoxic effects, at least partially due to the generation of reactive oxygen species (ROS). Objective of this study was to examine the cytotoxic and genotoxic potential of CQ in human oral keratinocytes (OKF6/TERT2) and immortalized epithelial colorectal adenocarcinoma cells (Caco-2). Furthermore, the effects of visible-light irradiation and the co-initiator DMT were investigated as well as the generation of ROS, the potential protective effect of glutathione (GSH) and a recovery period of CQ-treated Caco-2 cells. METHODS The alkaline comet assay was used to determine DNA damage. Additionally, an enzyme modified comet assay was applied, which detects 7,8-dihydro-8-oxoguanine (8-oxoguanine), a reliable marker for oxidative stress. RESULTS Our data revealed that high concentrations of CQ induced DNA lesions in OKF6/TERT2 cells. This DNA damage is at least partly caused by the generation of 8-oxoguanine. In addition, CQ and DMT increased ROS formation and induced DNA damage in Caco-2 cells. CQ-treatment resulted in generation of 8-oxoguanine. The antioxidant GSH efficiently prevented CQ-associated DNA damage. Furthermore, a recovery following CQ-treatment significantly reduced DNA damage. SIGNIFICANCE We conclude that CQ-induced DNA damage is caused by oxidative stress in oral and intestinal cells. These lesions can be prevented and possibly repaired by GSH-treatment and recovery of cells after the photoinitiator is removed from cultures.
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Affiliation(s)
- Miriam Wessels
- Department of Conservative Dentistry, Periodontology and Preventive Dentistry, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany.
| | - Julia Rimkus
- Department of Conservative Dentistry, Periodontology and Preventive Dentistry, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Gabriele Leyhausen
- Department of Conservative Dentistry, Periodontology and Preventive Dentistry, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Joachim Volk
- Department of Conservative Dentistry, Periodontology and Preventive Dentistry, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Werner Geurtsen
- Department of Conservative Dentistry, Periodontology and Preventive Dentistry, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
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Dash C, Bostick RM, Goodman M, Flanders WD, Patel R, Shah R, Campbell PT, McCullough ML. Oxidative balance scores and risk of incident colorectal cancer in a US prospective cohort study. Am J Epidemiol 2015; 181:584-94. [PMID: 25693772 DOI: 10.1093/aje/kwu318] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Accepted: 10/15/2014] [Indexed: 12/17/2022] Open
Abstract
Although oxidative stress is implicated in colorectal carcinogenesis, human studies on associations of individual prooxidants and antioxidants with colorectal cancer (CRC) have been inconclusive. We incorporated individual environmental factors known to affect oxidative stress into 4 oxidative balance scores (OBS) and investigated their associations with CRC in the Cancer Prevention Study II Nutrition Cohort. During 1999-2009, a total of 1,109 incident CRC cases were identified among 80,063 participants in the Nutrition Cohort who had completed detailed questionnaires. Four OBS with different weighting methods (equal weights, literature review-based, a posteriori data-based, and weights based on Bayesian analysis) were created by combining 16 dietary and nondietary lifestyle factors. Higher values for all 4 OBS, representing more antioxidant exposures than prooxidant exposures, were associated with 41%-53% lower risks of CRC; for example, the relative risk for the highest OBS quartile versus the lowest in the Bayesian analysis was 0.50 (95% confidence interval: 0.41, 0.61). The associations were more modest when OBS was restricted to either dietary or nondietary components. These results, obtained using comprehensive summary measures of oxidative balance-especially considering the similarity of the findings derived using the different weighting methods-support the hypothesis that a predominance of antioxidant lifestyle exposures (both dietary and nondietary) over prooxidant lifestyle exposures reduces risk of CRC.
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Abstract
Introduction Adenopolyps patients have a three-fold higher risk of colon cancer over the general population, which increases to six-fold if the polyps are multiple and with lower survival among African American population. Currently, 6% of CRC can be ascribed to mutations in particular genes. Moreover, the optimal management of patients with colorectal adenopolyps depends on the accuracy of appropriate staging strategies because patients with similar colorectal adenocarcinoma architecture display heterogeneity in the course and outcome of the disease. Oxidative stress, due to an imbalance between reactive oxygen species (ROS) and antioxidant capacities as well as a disruption of redox signaling, causes a wide range of damage to DNA, proteins, and lipids which promote tumor formation. Objective/Method This study applied spectrophotometric, dinitrophenylhydrazone (DNPH) assay, two-dimensional gel electrophoresis, and western blot analyses to assess the levels of oxidatively modified proteins in 41 pairs of primary colorectal tissues including normal/surrounding, adenopolyps (tubular, tubulovillous, villous, polypvillous) and carcinoma. Analysis of variance (ANOVA) and Student’s t-tests were utilized for the resulting data set. Results Our data showed that the levels of reactive protein carbonyl groups significantly increased as colorectal adenopolyps progresses to malignancy. No significant differences were found in the levels of carbonyl proteins between gender samples analyzed. For African American patients, there were, relative to Caucasians, 10% higher levels of reactive carbonyls in proteins of tubulovillous tissue samples (P < 0.05) and over 36% higher in levels in adenocarcinomas (P < 0.05). In normal tissues and tubular, there were no significant differences between the two groups in levels of protein carbonyls. Differences in the levels of protein carbonyl expression within individual patient samples with different number of tumor cells were notably evident. Conclusion Results suggested that oxidative stress could be involved in the modification of oxidatively carbonyl proteins in the precancer stages, leading to increased aggressiveness of colorectal polyps.
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Affiliation(s)
- Sharifeh Mehrabi
- Department of Medicine, Morehouse School of Medicine, Atlanta, USA
| | | | - Shakeria Cohen
- Department of Medicine, Morehouse School of Medicine, Atlanta, USA
| | - Xuebiao Yao
- Department of Physiology, Morehouse School of Medicine, Atlanta, USA
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Wang Y, Gao X, Wei F, Zhang X, Yu J, Zhao H, Sun Q, Yan F, Yan C, Li H, Ren X. The hOGG1 Ser326Cys polymorphism contributes to digestive system cancer susceptibility: evidence from 48 case-control studies. Tumour Biol 2015; 36:1029-38. [PMID: 25323581 DOI: 10.1007/s13277-014-2710-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Accepted: 02/10/2014] [Indexed: 12/13/2022] Open
Abstract
The Ser326Cys polymorphism in the human 8-oxogunaine DNA glycosylase (hOGG1) gene had been implicated in cancer susceptibility. Studies investigating the associations between the Ser326Cys polymorphism and digestion cancer susceptibility showed conflicting results. Therefore, a meta-analysis was performed to derive a more precise estimation of the relationship. We conducted a meta-analysis of 48 studies that included 12,073 cancer cases and 19,557 case-free controls. We assessed the strength of the association using odds ratios (ORs) with 95% confidence intervals (CIs). In our analysis, the hOGG1 Ser326Cys polymorphism was significantly associated with the risk of digestive system cancers (Cys/Cys vs. Ser/Ser: OR = 1.17, 95% CI = 1.00-1.35, P < 0.001; Cys/Cys vs. Cys/Ser + Ser/Ser: OR = 1.14, 95% CI = 1.00-1.29, P < 0.001). In subgroup analyses by cancer types, we found that the hOGG1 Ser326Cys polymorphism may increase hepatocellular cancer and colorectal cancer risks, but decrease the risk of oral cancer. These findings supported that hOGG1 Ser326Cys polymorphism may contribute to the susceptibility of digestive cancers.
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Jegasothy H, Weerakkody R, Selby-Pham S, Bennett LE. In vitro heme and non-heme iron capture from hemoglobin, myoglobin and ferritin by bovine lactoferrin and implications for suppression of reactive oxygen species in vivo. Biometals 2014; 27:1371-82. [PMID: 25280951 DOI: 10.1007/s10534-014-9798-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 09/28/2014] [Indexed: 01/18/2023]
Abstract
Lactoferrin (Lf), present in colostrum and milk is a member of the transferrin family of iron-binding glyco-proteins, with stronger binding capacity to ferric iron than hemoglobin, myoglobin or transferrin. Unlike hemoglobin and myoglobin, iron-bound Lf is reasonably stable to gastric and duodenal digestive conditions. Unlike ferrous iron, ferric iron is not directly reactive with oxygen supporting the capacity of Lf capture of heme iron to suppress reactive oxygen species (ROS) production. We therefore hypothesized that bovine Lf could capture and thereby terminate the cycle of ROS production by heme iron. The transfer of heme iron from either intact or digested forms of hemoglobin and myoglobin and from intact ferritin was demonstrated by in vitro methods, monitoring Fe-saturation status of Lf by changes in absorptivity at 465 nm. The results are discussed in the context of new proposed opportunities for orally administered Lf to regulate oxidative damage associated with heme iron. In addition to potentially suppressing oxidative heme-iron-mediated tissue damage in the lumen, Lf is expected to also reverse the overload of ferritin-bound iron, that accompanies chronic inflammation and aging. These new proposed uses of Lf are additional to known host defense functions that include anti-microbial, anti-viral properties, immune and cancer cell growth regulation. The findings and interpretations presented require clinical substantiation and may support important additional protective and therapeutic uses for Lf in the future.
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Abstract
The cause of colorectal cancer (CRC) is multifactorial, with genetic, molecular, inflammatory, and environmental risk factors. Recently, the gut microbiota has been recognized as a new environmental contributor to CRC in both animal models and human studies. An additional interplay of the gut microbiome with inflammation is also evident in studies that have shown that inflammation alone or the presence of bacteria/bacterial metabolites alone is not enough to promote tumorigenesis. Rather, complex interrelationships with the gut microbiome, inflammation, genetics, and other environmental factors are evident in progression of colorectal tumors.
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Affiliation(s)
- Margaret Cho
- Department of Pathology, New York University School of Medicine, 560 First Avenue, New York, NY 10016, USA
| | - Janell Carter
- Department of Pathology, New York University School of Medicine, 560 First Avenue, New York, NY 10016, USA
| | - Saul Harari
- Department of Pathology, New York University School of Medicine, 560 First Avenue, New York, NY 10016, USA
| | - Zhiheng Pei
- Department of Pathology, New York University School of Medicine, 560 First Avenue, New York, NY 10016, USA; Department of Medicine, New York University School of Medicine, 560 First Avenue, New York, NY 10016, USA; Department of Veterans Affairs New York Harbor Healthcare System, 423 East 23rd Street, Room 6030W, New York, NY 10010, USA.
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Oostindjer M, Alexander J, Amdam GV, Andersen G, Bryan NS, Chen D, Corpet DE, De Smet S, Dragsted LO, Haug A, Karlsson AH, Kleter G, de Kok TM, Kulseng B, Milkowski AL, Martin RJ, Pajari AM, Paulsen JE, Pickova J, Rudi K, Sødring M, Weed DL, Egelandsdal B. The role of red and processed meat in colorectal cancer development: a perspective. Meat Sci 2014; 97:583-96. [DOI: 10.1016/j.meatsci.2014.02.011] [Citation(s) in RCA: 123] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 02/14/2014] [Accepted: 02/17/2014] [Indexed: 02/07/2023]
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Martano G, Bojaxhi E, Forstenlehner IC, Huber CG, Bresgen N, Eckl PM, Stutz H. Validation and application of sub-2 μm core-shell UHPLC-UV-ESI-Orbitrap MS for identification and quantification of β-carotene and selected cleavage products with preceding solid-phase extraction. Anal Bioanal Chem 2014; 406:2909-24. [PMID: 24652151 PMCID: PMC3984670 DOI: 10.1007/s00216-014-7725-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 02/21/2014] [Accepted: 02/25/2014] [Indexed: 11/25/2022]
Abstract
A validated ultrahigh-performance liquid chromatography method using 1.7 μm core–shell particles is presented for the identification and quantification of β-carotene (BC) and related cleavage products (CPs) in primary cell culture media. Besides BC, apo-4′-, apo-8′-, apo-10′-, and apo-12′-carotenals, as well as 5,6-epoxy-β-carotene, were selected as target analytes. Detection was performed via an 80-Hz diode array detector and an electrospray ionization–linear quadrupole ion trap–Orbitrap XL mass spectrometer, both hyphenated in series. Total analysis time was below 6 min with peak widths <12 s. Addition of trifluoroacetic acid and tetrahydrofuran to the mobile phase allowed for the mass spectrometric detection of BC and related CPs and reduced peak tailing due to improved solubility of hydrophobic analytes. Intra-day and inter-day precision for UV and mass spectrometric detection were ≤1.5 % for retention times and ≤5.1 % for peak areas. Instrumental linearity was confirmed by Mandel’s fitting test between 0.25 (or 1.00 μg/mL) and 5.00 μg/mL for UV detection. The higher sensitivity of mass spectrometric detection allowed for the coverage of three concentration domains between 0.025 and 5.00 μg/mL in linearity testing. Homoscedasticity was confirmed between 0.10 and 5.00 μg/mL for Orbitrap XL MS. The limits of quantification were between 52.6 and 889.4 ng/mL for UV detection and between 19.3 and 102.4 ng/L for mass spectrometric detection. Offline solid-phase extraction from culture media fortified with BC and CPs provided intra- and inter-day recoveries between 65.8 and 102.4 % with coefficients of variation ≤6.2 %. Primary rat hepatocyte cultures treated with BC and subjected to different oxidative stress conditions contained 5,6-epoxy-BC and apo-4′-carotenal besides residual BC. Apparently, 5,6-epoxy-BC was formed in the medium via autoxidation of BC by ambient oxygen.
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Affiliation(s)
- G. Martano
- Division of Chemistry and Bioanalytics, Department of Molecular Biology, University of Salzburg, 5020 Salzburg, Austria
| | - E. Bojaxhi
- Division of Genetics, Department of Cell Biology, University of Salzburg, 5020 Salzburg, Austria
| | - I. C. Forstenlehner
- Division of Chemistry and Bioanalytics, Department of Molecular Biology, University of Salzburg, 5020 Salzburg, Austria
| | - C. G. Huber
- Division of Chemistry and Bioanalytics, Department of Molecular Biology, University of Salzburg, 5020 Salzburg, Austria
| | - N. Bresgen
- Division of Genetics, Department of Cell Biology, University of Salzburg, 5020 Salzburg, Austria
| | - P. M. Eckl
- Division of Genetics, Department of Cell Biology, University of Salzburg, 5020 Salzburg, Austria
| | - H. Stutz
- Division of Chemistry and Bioanalytics, Department of Molecular Biology, University of Salzburg, 5020 Salzburg, Austria
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Moser JC, Rawal M, Wagner BA, Du J, Cullen JJ, Buettner GR. Pharmacological ascorbate and ionizing radiation (IR) increase labile iron in pancreatic cancer. Redox Biol 2013; 2:22-7. [PMID: 24396727 PMCID: PMC3881203 DOI: 10.1016/j.redox.2013.11.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Revised: 11/13/2013] [Accepted: 11/14/2013] [Indexed: 02/04/2023] Open
Abstract
Labile iron, i.e. iron that is weakly bound and is relatively unrestricted in its redox activity, has been implicated in both the pathogenesis as well as treatment of cancer. Two cancer treatments where labile iron may contribute to their mechanism of action are pharmacological ascorbate and ionizing radiation (IR). Pharmacological ascorbate has been shown to have tumor-specific toxic effects due to the formation of hydrogen peroxide. By catalyzing the oxidation of ascorbate, labile iron can enhance the rate of formation of hydrogen peroxide; labile iron can also react with hydrogen peroxide. Here we have investigated the magnitude of the labile iron pool in tumor and normal tissue. We also examined the ability of pharmacological ascorbate and IR to change the size of the labile iron pool. Although a significant amount of labile iron was seen in tumors (MIA PaCa-2 cells in athymic nude mice), higher levels were seen in murine tissues that were not susceptible to pharmacological ascorbate. Pharmacological ascorbate and irradiation were shown to increase the labile iron in tumor homogenates from this murine model of pancreatic cancer. As both IR and pharmacological ascorbate may rely on labile iron for their effects on tumor tissues, our data suggest that pharmacological ascorbate could be used as a radio-sensitizing agent for some radio-resistant tumors. EPR can detect chelatable iron in tissue as ferrioxamine. Chelatable iron varies widely with type of tissue. Pharmacological ascorbate increases the amount of chelatable iron in tissue.
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Affiliation(s)
- Justin C Moser
- Free Radical and Radiation Biology Program and ESR Facility, Department of Radiation Oncology, The University of Iowa, Iowa City, IA, USA
| | - Malvika Rawal
- Free Radical and Radiation Biology Program and ESR Facility, Department of Radiation Oncology, The University of Iowa, Iowa City, IA, USA
| | - Brett A Wagner
- Free Radical and Radiation Biology Program and ESR Facility, Department of Radiation Oncology, The University of Iowa, Iowa City, IA, USA
| | - Juan Du
- Free Radical and Radiation Biology Program and ESR Facility, Department of Radiation Oncology, The University of Iowa, Iowa City, IA, USA
| | - Joseph J Cullen
- Free Radical and Radiation Biology Program and ESR Facility, Department of Radiation Oncology, The University of Iowa, Iowa City, IA, USA ; Department of Surgery, The University of Iowa, Iowa City, IA, USA ; Holden Comprehensive Cancer Center, The University of Iowa, Iowa City, IA, USA
| | - Garry R Buettner
- Free Radical and Radiation Biology Program and ESR Facility, Department of Radiation Oncology, The University of Iowa, Iowa City, IA, USA ; Holden Comprehensive Cancer Center, The University of Iowa, Iowa City, IA, USA
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Dash C, Goodman M, Flanders WD, Mink PJ, McCullough ML, Bostick RM. Using pathway-specific comprehensive exposure scores in epidemiology: application to oxidative balance in a pooled case-control study of incident, sporadic colorectal adenomas. Am J Epidemiol 2013; 178:610-24. [PMID: 23639935 PMCID: PMC3816340 DOI: 10.1093/aje/kwt007] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Accepted: 01/14/2013] [Indexed: 01/15/2023] Open
Abstract
Identifying associations of risk factors sharing the same pathway with disease risk is complicated by small individual effects and intercorrelated components; this can be addressed by creating comprehensive exposure scores. We developed and validated 3 novel weighting methods (literature review-derived, study data-based, and a Bayesian method that combines prior knowledge with study data) to incorporate components into a pathway score for oxidative balance in addition to a commonly used method that assumes all components contribute equally to the score. We illustrate our method using pooled data from 3 US case-control studies of sporadic colorectal adenoma (1991-2002). We created 4 oxidative balance scores (OBS) to reflect combined summary measures of dietary and nondietary antioxidant and prooxidant exposures. A higher score represents a predominance of antioxidant exposures over prooxidant exposures. In the pooled data, the odds ratios comparing the highest tertile of OBS with the lowest for adenoma risk ranged from 0.38 to 0.54 for the 4 measures; all were statistically significant. These findings suggest that 1) OBS are indicators of oxidative balance and may be inversely associated with colorectal adenoma risk and 2) using comprehensive exposure scores may be preferable to investigating individual component-disease associations for complex exposures, such as oxidative balance.
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Affiliation(s)
| | | | | | | | | | - Roberd M. Bostick
- Correspondence to Dr. Roberd M. Bostick, Department of Epidemiology, Rollins School of Public Health, Emory University, 1518 Clifton Road, Atlanta, GA 30322 (e-mail: )
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Xue X, Shah YM. Intestinal iron homeostasis and colon tumorigenesis. Nutrients. 2013;5:2333-2351. [PMID: 23812305 PMCID: PMC3738976 DOI: 10.3390/nu5072333] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Revised: 05/29/2013] [Accepted: 06/07/2013] [Indexed: 12/16/2022] Open
Abstract
Colorectal cancer (CRC) is the third most common cause of cancer-related deaths in industrialized countries. Understanding the mechanisms of growth and progression of CRC is essential to improve treatment. Iron is an essential nutrient for cell growth. Iron overload caused by hereditary mutations or excess dietary iron uptake has been identified as a risk factor for CRC. Intestinal iron is tightly controlled by iron transporters that are responsible for iron uptake, distribution, and export. Dysregulation of intestinal iron transporters are observed in CRC and lead to iron accumulation in tumors. Intratumoral iron results in oxidative stress, lipid peroxidation, protein modification and DNA damage with consequent promotion of oncogene activation. In addition, excess iron in intestinal tumors may lead to increase in tumor-elicited inflammation and tumor growth. Limiting intratumoral iron through specifically chelating excess intestinal iron or modulating activities of iron transporter may be an attractive therapeutic target for CRC.
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Priolli DG, Canelloi TP, Lopes CO, Valdívia JCM, Martinez NP, Açari DP, Cardinalli IA, Ribeiro ML. Oxidative DNA damage and β-catenin expression in colorectal cancer evolution. Int J Colorectal Dis 2013; 28:713-22. [PMID: 23559415 DOI: 10.1007/s00384-013-1688-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/18/2013] [Indexed: 02/04/2023]
Abstract
PURPOSE Oxidative DNA damage is one of the mechanisms associated to initial colorectal carcinogenesis, but how it interacts with β-catenin, an adherence protein related to cancer evolution, is not clear. This study investigates the relationship between oxidative DNA damage and β-catenin expression in normal mucosa and colon tumor tissue (adenoma and adenocarcinoma) in colorectal adenocarcinoma evolution. METHOD One hundred and 13 samples were studied. Hematoxylin-eosin determined histological grade. β-Catenin expression was analyzed by immunohistochemistry. The oxidative DNA damage was evaluated using comet assay technique. The coefficient for rejection of the nullity hypothesis was taken to 5 %. Kruskal-Wallis, Spearman test, and partial correlation were used to analyze the data. RESULTS There was oxidative DNA damage increase in colorectal cancer evolution (p < 0.01). Histological grade was correlated with oxidative DNA damage (p < 0.01). There were differences in β-catenin expression among normal, adenoma, and adenocarcinoma tissue with progressive increase of β-catenin expression (p < 0.00). Histological grade was correlated to β-catenin expression (p < 0.00). There was a relationship (p < 0.00) between β-catenin and histological grade while controlling for the effect of oxidative DNA damage. CONCLUSION The findings of this study make it possible to establish a relationship between oxidative DNA damage and β-catenin expression in normal mucosa and colorectal tumor tissue. Additionally, they show a causal relationship between variations of β-catenin in different tissues analyzed while controlling for the effect of oxidative DNA damage.
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Affiliation(s)
- Denise G Priolli
- Postgraduate Program Strictu Senso in Health Science, Sao Francisco University Medical School, Sao Paulo, Brazil.
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Poljsak B, Milisav I. The neglected significance of “antioxidative stress”. Oxid Med Cell Longev. 2012;2012:480895. [PMID: 22655114 PMCID: PMC3357598 DOI: 10.1155/2012/480895] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2012] [Accepted: 02/17/2012] [Indexed: 12/13/2022]
Abstract
Oxidative stress arises when there is a marked imbalance between the production and removal of reactive oxygen species (ROS) in favor of the prooxidant balance, leading to potential oxidative damage. ROSs were considered traditionally to be only a toxic byproduct of aerobic metabolism. However, recently, it has become apparent that ROS might control many different physiological processes such as induction of stress response, pathogen defense, and systemic signaling. Thus, the imbalance of the increased antioxidant potential, the so-called antioxidative stress, should be as dangerous as well. Here, we synthesize increasing evidence on “antioxidative stress-induced” beneficial versus harmful roles on health, disease, and aging processes. Oxidative stress is not necessarily an un-wanted situation, since its consequences may be beneficial for many physiological reactions in cells. On the other hand, there are potentially harmful effects of “antioxidative stress,” especially in the cases of overconsumption of synthetic antioxidants. Antioxidants can neutralize ROS and decrease oxidative stress; however, this is not always beneficial in regard to disease formation or progression (of, e.g., cancer) or for delaying aging.
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Kang KA, Maeng YH, Zhang R, Yang YR, Piao MJ, Kim KC, Kim GY, Kim YR, Koh YS, Kang HK, Hyun CL, Chang WY, Hyun JW. Involvement of heme oxygenase-1 in Korean colon cancer. Tumour Biol 2012; 33:1031-8. [PMID: 22302482 DOI: 10.1007/s13277-012-0336-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2011] [Accepted: 01/19/2012] [Indexed: 01/25/2023] Open
Abstract
Heme oxygenase-1 (HO-1) catabolizes heme into carbon monoxide, biliverdin, and free iron which mediate its protective effect against oxidative stress. The aim of the present study was to determine the expression level and activity of HO-1 in Korean colon cancer tissues and cell lines. HO-1 protein expression was higher (>1.5-fold) in tumor tissues than in adjacent normal tissues in 14 of 20 colon cancer patients, and HO-1 protein expression was closely correlated with HO-1 enzyme activity in cancer tissues. Immunohistochemical data confirmed that HO-1 protein was expressed at a higher level in colon cancer tissues than in normal mucosa. Furthermore, HO-1 mRNA and protein expression and enzyme activity were higher in the colon cancer cell lines Caco-2, SNU-407, SNU-1033, HT-29, and SW-403 than in the normal fetal human colon cell line FHC. Treatment with the HO-1 inhibitor zinc protoporphyrin decreased the viability of colon cancer cell lines. These data indicate that HO-1 may serve as a clinically useful biomarker of colon cancer and as a target for anticolon cancer drugs.
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Affiliation(s)
- Kyoung Ah Kang
- Division of Radiation Cancer Research, Korea Institute of Radiological and Medical Sciences, Seoul 139-706, Republic of Korea
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Cross AJ, Harnly JM, Ferrucci LM, Risch A, Mayne ST, Sinha R. Developing a heme iron database for meats according to meat type, cooking method and doneness level. ACTA ACUST UNITED AC 2012; 3:905-913. [PMID: 23459329 DOI: 10.4236/fns.2012.37120] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Animal studies have demonstrated that iron may be related to carcinogenesis, and human studies found that heme iron can increase the formation of N-nitroso compounds, which are known carcinogens. OBJECTIVES One of the postulated mechanisms linking red meat intake to cancer risk involves iron. Epidemiologic studies attempt to investigate the association between heme iron intake and cancer by applying a standard factor to total iron from meat. However, laboratory studies suggest that heme iron levels in meat vary according to cooking method and doneness level. We measured heme iron in meats cooked by different cooking methods to a range of doneness levels to use in conjunction with a food frequency questionnaire to estimate heme iron intake. METHODS Composite meat samples were made to represent each meat type, cooking method and doneness level. Heme iron was measured using atomic absorption spectrometry and inductively coupled plasma-atomic emission spectrometry. RESULTS Steak and hamburgers contained the highest levels of heme iron, pork and chicken thigh meat had slightly lower levels, and chicken breast meat had the lowest. CONCLUSIONS Although heme iron levels varied, there was no clear effect of cooking method or doneness level. We outline the methods used to create a heme iron database to be used in conjunction with food frequency questionnaires to estimate heme iron intake in relation to disease outcome.
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Affiliation(s)
- Amanda J Cross
- Nutritional Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, 6120 Executive Blvd, Rockville, MD, 20852
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Ferrucci LM, Sinha R, Huang WY, Berndt SI, Katki HA, Schoen RE, Hayes RB, Cross AJ. Meat consumption and the risk of incident distal colon and rectal adenoma. Br J Cancer 2011; 106:608-16. [PMID: 22166801 PMCID: PMC3281548 DOI: 10.1038/bjc.2011.549] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Background: Most studies of meat and colorectal adenoma have investigated prevalent events from a single screening, thus limiting our understanding of the role of meat and meat-related exposures in early colorectal carcinogenesis. Methods: Among participants in the screening arm of the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial who underwent baseline and follow-up sigmoidoscopy (n=17 072), we identified 1008 individuals with incident distal colorectal adenoma. We calculated odds ratios (ORs) and 95% confidence intervals (95% CIs) for associations between meat and meat-related components and incident distal colorectal adenoma using multivariate logistic regression. Results: We observed suggestive positive associations for red meat, processed meat, haeme iron, and nitrate/nitrite with distal colorectal adenoma. Grilled meat (OR=1.56, 95% CI=1.04–2.36), well or very well-done meat (OR=1.59, 95% CI=1.05–2.43), 2-amino-1-methyl-6-phenyl-imidazo[4,5-b]pyridine (PhIP) (OR=1.75, 95% CI=1.17–2.64), benzo[a]pyrene (OR=1.53, 95% CI=1.06–2.20), and total mutagenic activity (OR=1.57, 95% CI=1.03–2.40) were positively associated with rectal adenoma. Total iron (diet and supplements) (OR=0.69, 95% CI=0.56–0.86) and iron from supplements (OR=0.65, 95% CI=0.44–0.97) were inversely associated with any distal colorectal adenoma. Conclusion: Our findings indicate that several meat-related components may be most relevant to early neoplasia in the rectum. In contrast, total iron and iron from supplements were inversely associated with any distal colorectal adenoma.
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Affiliation(s)
- L M Ferrucci
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Department of Health and Human Services, Bethesda, MD, USA
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Liu CL, Liang AL, Hu ML. Protective effects of fucoxanthin against ferric nitrilotriacetate-induced oxidative stress in murine hepatic BNL CL.2 cells. Toxicol In Vitro 2011; 25:1314-9. [DOI: 10.1016/j.tiv.2011.04.023] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2010] [Revised: 04/10/2011] [Accepted: 04/26/2011] [Indexed: 01/11/2023]
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Mullen A, Gosset L, Larke N, Manno D, Chisenga M, Kasonka L, Filteau S. The effects of micronutrient-fortified complementary/replacement food on intestinal permeability and systemic markers of inflammation among maternally HIV-exposed and unexposed Zambian infants. Br J Nutr 2012; 107:893-902. [PMID: 21899803 DOI: 10.1017/S0007114511003734] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The present randomised trial investigated the effects of feeding Zambian infants from 6 to 18 months old either a richly or basal micronutrient-fortified complementary/replacement food on gut integrity and systemic inflammation. Blood samples were obtained from all infants (n 743) at 6 and 18 months for the assessment of serum C-reactive protein (CRP) and α1-acid glycoprotein (AGP). A subsample of 502 infants, selected from the main cohort to include a larger proportion of infants with HIV-positive mothers, was assigned to lactulose/mannitol gut permeability tests. Lactulose:mannitol (L:M) ratio analyses were adjusted for baseline urinary L:M ratio, socio-economic status, mother's education, season of birth and baseline stunting, and stratified by maternal antenatal HIV status, child's sex, concurrent breast-feeding status and anaemia at baseline. There was no significant difference in geometric mean L:M ratio between the richly fortified and basal-fortified porridge arms at 12 months (0·47 (95 % CI 0·41, 0·55) v. 0·41 (95 % CI 0·34, 0·49); P = 0·16 adjusted). At 18 months, the richly fortified porridge group had a significantly higher geometric mean L:M ratio than the basal-fortified group (0·23 (95 % CI 0·19, 0·28) v. 0·15 (95 % CI 0·12, 0·19); P = 0·02 adjusted). This effect was evident for all stratifications, significantly among boys (P = 0·04), among the infants of HIV-negative mothers (P = 0·01), among the infants of HIV-negative mothers not concurrently breast-fed (P = 0·01) and among those who were not anaemic at baseline (P = 0·03). CRP, but not AGP, was positively associated with L:M ratio, but there were no significant effects of the diet on either CRP or AGP. In conclusion, a richly fortified complementary/replacement food did not benefit and may have worsened intestinal permeability.
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Zhang Y, Gao Z, Liu J, Xu Z. Protective effects of baicalin and quercetin on an iron-overloaded mouse: comparison of liver, kidney and heart tissues. Nat Prod Res 2011; 25:1150-60. [DOI: 10.1080/14786419.2010.495070] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Kallur T, Farr TD, Böhm-Sturm P, Kokaia Z, Hoehn M. Spatio-temporal dynamics, differentiation and viability of human neural stem cells after implantation into neonatal rat brain. Eur J Neurosci 2011; 34:382-93. [DOI: 10.1111/j.1460-9568.2011.07759.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Lima PDL, Vasconcellos MC, Montenegro RC, Bahia MO, Costa ET, Antunes LMG, Burbano RR. Genotoxic effects of aluminum, iron and manganese in human cells and experimental systems: A review of the literature. Hum Exp Toxicol 2011; 30:1435-44. [DOI: 10.1177/0960327110396531] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
There is considerable evidence indicating an increase in neurodegenerative disorders in industrialized countries. The clinical symptoms and the possible mutagenic effects produced by acute poisoning and by chronic exposure to metals are of major interest. This study is a review of the data found concerning the genotoxic potential of three metals: aluminum (Al), iron (Fe) and manganese (Mn), with emphasis on their action on human cells.
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Affiliation(s)
- PDL Lima
- Molecular Biology Laboratory, Center of Biological and Health Sciences, Estadual University of Pará, Belém/PA, Brazil
| | - MC Vasconcellos
- School of Pharmaceutical Sciences, Federal University of Amazonas, Manaus/AM, Brazil
| | - RC Montenegro
- Human Cytogenetics Laboratory, Institute Biological Sciences, Federal University of Pará, Belém/PA, Brazil
| | - MO Bahia
- Human Cytogenetics Laboratory, Institute Biological Sciences, Federal University of Pará, Belém/PA, Brazil
| | - ET Costa
- Experimental Neuropathology Laboratory, João de Barros Barreto University Hospital, Federal University of Pará, Belém/PA, Brazil
| | - LMG Antunes
- Department of Clinical, Toxicological and Bromatological Analyses, Faculdade de Cincias Farmacuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto/SP, Brazil
| | - RR Burbano
- Human Cytogenetics Laboratory, Institute Biological Sciences, Federal University of Pará, Belém/PA, Brazil
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Park JH, Park E. Influence of iron-overload on DNA damage and its repair in human leukocytes in vitro. Mutat Res 2010; 718:56-61. [PMID: 20974287 DOI: 10.1016/j.mrgentox.2010.10.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2010] [Revised: 09/08/2010] [Accepted: 10/18/2010] [Indexed: 10/18/2022]
Abstract
Iron is an important element that modulates the production of reactive oxygen species, which are thought to play a causative role in biological processes such as mutagenesis and carcinogenesis. The potential genotoxicity of dietary iron has been seldom studied in human leukocyte and only few reports have investigated in human colon tumor cells. Therefore, DNA damage and repair capacity of human leukocytes were examined using comet assay for screening the potential toxicity of various iron-overloads such as ferric-nitrilotriacetate (Fe-NTA), FeSO(4), hemoglobin and myoglobin, and compared with 200μM of H(2)O(2) and HNE. The iron-overloads tested were not cytotoxic in the range of 10-1000 microM by trypan blue exclusion assay. The exposure of leukocytes to Fe-NTA (500 and 1000 microM), FeSO(4) (250-1000 microM), hemoglobin (10 microM) and myoglobin (250 microM) for 30 min induced significantly higher DNA damage than NC. Treatment with 500 and 1000 microM of Fe-NTA showed a similar genotoxic effect to H(2)O(2), and a significant higher genotoxic effect than HNE. The genotoxicity of FeSO(4) (250-1000 microM), hemoglobin (10 microM) and myoglobin (250 microM) was not significantly different from that of H(2)O(2) and HNE. Iron-overloads generated DNA strand break were rejoined from the first 1h. Their genotoxic effect was not observed at 24h. These data from this study provide additional information on the genotoxicity of iron-overloads and self-repair capacity in human leukocytes.
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Affiliation(s)
- Jae-Hee Park
- Department of Food and Nutrition, Kyungnam University, 449 Wolyoung-dong, Masanhappo-gu, Changwon-si, 631-701 Masan, South Korea
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Nahdi A, Hammami I, Kouidhi W, Chargui A, Ben Ammar A, Hamdaoui MH, El May A, El May M. Protective effects of crude garlic by reducing iron-mediated oxidative stress, proliferation and autophagy in rats. J Mol Histol 2010; 41:233-45. [PMID: 20700633 DOI: 10.1007/s10735-010-9283-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2010] [Accepted: 07/19/2010] [Indexed: 01/04/2023]
Abstract
The impact of garlic, known for its antioxidant activities, on iron metabolism has been poorly investigated. The aim of this work was to study the effect of crude garlic pre-treatment on iron-mediated lipid peroxidation, proliferation and autophagy for 5 weeks. Rats were fed distilled water or garlic solution (1 g/kg body weight) by gavage for the first 3 weeks as pre-treatment and received a basal diet supplemented or not with ferrous sulfate (650 mg Fe/kg diet) for the last 2 weeks of treatment. Immunohistochemistry labeling and ultrastuctural observations were used to evaluate the iron deleterious effects in the liver. Iron supplementation induced cell proliferation predominantly in non parenchymal cells comparing to hepatocytes, but not apoptosis. In addition, iron was accumulated within the hepatic lysosomes where it triggers autophagy as evidenced by the formation of autophagic vesicles detected by LC3-II staining. It also induced morphologic alterations of the mitochondrial membranes due to increased lipid peroxidation as shown by elevated iron and malondialdehyde concentrations in serum and tissues. Garlic pre-treatment reduced iron-catalyzed lipid peroxidation by decreasing the malondialdehyde level in the liver and colon and by enhancing the status of antioxidants. In addition, garlic reduced the iron-mediated cell proliferation and autophagy by lowering iron storage in the liver and protected mitochondrial membrane. Based on these results, garlic treatment significantly prevented iron-induced oxidative stress, proliferation and autophagy at both biochemical and histological levels due to its potent free radical scavenging and antioxidant properties.
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Abstract
In this review, we briefly summarize some of the key developments in nutritional epidemiology and cancer over the past two decades with a focus on the strengths and limitations of study designs and dietary assessment methods. We present the evidence on dietary fat, meat, fiber, antioxidant nutrients, and calcium in relation to carcinogenesis from large cohort studies and randomized clinical trials (RCTs) and refer to the conclusions of the 2007 World Cancer Research Fund/American Institute for Cancer Research summary report. One prominent theme that emerged is the lack of concordance of results from RCTs and observational studies. There are multiple potential reasons for these discrepancies, including differences in study population, dose and timing of the exposure, adherence to an intervention, length of follow-up, and the primary endpoint. Therefore, null findings of RCTs do not necessarily indicate a lack of effect for the tested dietary factors on cancer risk, as some of these nutrients may have chemopreventive effects if given at the right time and in the right dose. It is likely that potential benefits from diet are due to a combination of food constituents rather than single components acting in isolation. Future efforts need to recognize the integrative nature of dietary exposures and attempt to study nutrients in the larger context of the foods and diets in which they are consumed.
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Affiliation(s)
- Todd M Gibson
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Department of Health and Human Services, Rockville, MD 20852, USA.
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Cross AJ, Ferrucci LM, Risch A, Graubard BI, Ward MH, Park Y, Hollenbeck AR, Schatzkin A, Sinha R. A large prospective study of meat consumption and colorectal cancer risk: an investigation of potential mechanisms underlying this association. Cancer Res 2010; 70:2406-14. [PMID: 20215514 DOI: 10.1158/0008-5472.can-09-3929] [Citation(s) in RCA: 268] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Although the relation between red and processed meat intake and colorectal cancer has been reported in several epidemiologic studies, very few investigated the potential mechanisms. This study examined multiple potential mechanisms in a large U.S. prospective cohort with a detailed questionnaire on meat type and meat cooking methods linked to databases for estimating intake of mutagens formed in meats cooked at high temperatures (heterocyclic amines, polycyclic aromatic hydrocarbons), heme iron, nitrate, and nitrite. During 7 years of follow-up, 2,719 colorectal cancer cases were ascertained from a cohort of 300,948 men and women. The hazard ratios (HR) and 95% confidence intervals (95% CI) comparing the fifth to the first quintile for both red (HR, 1.24; 95% CI, 1.09-1.42; P(trend) < 0.001) and processed meat (HR, 1.16; 95% CI, 1.01-1.32; P(trend) = 0.017) intakes indicated an elevated risk for colorectal cancer. The potential mechanisms for this relation include heme iron (HR, 1.13; 95% CI, 0.99-1.29; P(trend) = 0.022), nitrate from processed meats (HR, 1.16; 95% CI, 1.02-1.32; P(trend) = 0.001), and heterocyclic amine intake [HR, 1.19; 95% CI, 1.05-1.34; P(trend) < 0.001 for 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MeIQx) and HR, 1.17; 95% CI, 1.05-1.29; P(trend) <0.001 for 2-amino-3,4,8-trimethylimidazo[4,5-f]quinoxaline (DiMeIQx)]. In general, the elevated risks were higher for rectal cancer than for colon cancer, with the exception of MeIQx and DiMeIQx, which were only associated with colon cancer. In conclusion, we found a positive association for red and processed meat intake and colorectal cancer; heme iron, nitrate/nitrite, and heterocyclic amines from meat may explain these associations.
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Affiliation(s)
- Amanda J Cross
- Nutritional Epidemiology Branch, Biostatistics Branch, Division of Cancer Epidemiology and Genetics, Department of Health and Human Services, National Cancer Institute, NIH, Rockville, Maryland, USA.
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Hovhannisyan G, Aroutiounian R, Glei M. Butyrate reduces the frequency of micronuclei in human colon carcinoma cells in vitro. Toxicol In Vitro 2009; 23:1028-33. [DOI: 10.1016/j.tiv.2009.06.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2009] [Revised: 06/09/2009] [Accepted: 06/15/2009] [Indexed: 11/20/2022]
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