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Ohira H, Tsuruya A, Oikawa D, Nakagawa W, Mamoto R, Hattori M, Waki T, Takahashi S, Fujioka Y, Nakayama T. Alteration of oxidative-stress and related marker levels in mouse colonic tissues and fecal microbiota structures with chronic ethanol administration: Implications for the pathogenesis of ethanol-related colorectal cancer. PLoS One 2021; 16:e0246580. [PMID: 33577585 PMCID: PMC7880462 DOI: 10.1371/journal.pone.0246580] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 01/22/2021] [Indexed: 11/19/2022] Open
Abstract
Chronic ethanol consumption is a risk factor for colorectal cancer, and ethanol-induced reactive oxygen species have been suggested to play important roles in the pathogenesis of ethanol-related colorectal cancer (ER-CRC). In this study, the effects of 10-week chronic administration of ethanol on the colonic levels of oxidative stress and advance glycation end product (AGE) levels, as well as fecal microbiota structures, were examined in a mouse model. Chronic oral administration of ethanol in mice (1.0 mL of 1.5% or 5.0% ethanol (v/v) per day per mouse, up to 10 weeks) resulted in the elevation of colonic levels of oxidative stress markers (such as 8-hydroxy-2'-deoxyguanosine and 4-hydroxynonenal) compared to control mice, and this was consistently accompanied by elevated levels of inflammation-associated cytokines and immune cells (Th17 and macrophages) and a decreased level of regulatory T (Treg) cells to produce colonic lesions. It also resulted in an alteration of mouse fecal microbiota structures, reminiscent of the alterations observed in human inflammatory bowel disease, and this appeared to be consistent with the proposed sustained generation of oxidative stress in the colonic environment during chronic ethanol consumption. Moreover, the first experimental evidence that chronic ethanol administration results in elevated levels of advanced glycation end products (AGEs) and their receptors (RAGE) in the colonic tissues in mice is also shown, implying enhanced RAGE-mediated signaling with chronic ethanol administration. The RAGE-mediated signaling pathway has thus far been implicated as a link between the accumulation of AGEs and the development of many types of chronic colitis and cancers. Thus, enhancement of this pathway likely exacerbates the ethanol-induced inflammatory states of colonic tissues and might at least partly contribute to the pathogenesis of ER-CRC.
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Affiliation(s)
- Hideo Ohira
- Division of Clinical Nutrition, Faculty of Nutrition, Kobe Gakuin University, Kobe, Japan
| | - Atsuki Tsuruya
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
| | - Daiki Oikawa
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
| | - Wao Nakagawa
- Division of Clinical Nutrition, Faculty of Nutrition, Kobe Gakuin University, Kobe, Japan
| | - Rie Mamoto
- Division of Clinical Nutrition, Faculty of Nutrition, Kobe Gakuin University, Kobe, Japan
| | - Masahira Hattori
- Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Toshiyuki Waki
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
| | - Seiji Takahashi
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
| | - Yoshio Fujioka
- Division of Clinical Nutrition, Faculty of Nutrition, Kobe Gakuin University, Kobe, Japan
| | - Toru Nakayama
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai, Japan
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Witold K, Anna K, Maciej T, Jakub J. Adenomas - Genetic factors in colorectal cancer prevention. Rep Pract Oncol Radiother 2018; 23:75-83. [PMID: 29463957 PMCID: PMC5814382 DOI: 10.1016/j.rpor.2017.12.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Revised: 07/17/2017] [Accepted: 12/27/2017] [Indexed: 12/21/2022] Open
Abstract
Colorectal cancer is the second most common type of cancer both in Europe and Poland. During the last 30 years more than a 3-fold increase has been observed in Poland due to environmental and genetic factors. Almost all colorectal malignancies are related to the formation and malignant transformation of colorectal dysplasia and adenoma. Efforts aiming to decrease the number of colorectal cancer deaths are focused on the disease early detection. Genetic diagnosis for hereditary syndromes predisposing to colorectal cancer has been developed and is a part of the routine treatment. Most cancers are sporadic. They often develop from polyps in the colon. In addition to the genetic events described in the 1990s, showing the adenoma transformation into carcinoma that has been a prime example of malignant transformation for a long time, there are also other possibilities of neoplastic transformation. The recognition of colorectal cancer risk factors make sense as their nature is lifestyle- and diet-related. In this review paper those risk factors are presented and the prevention of colorectal cancer is discussed taking into account genetic factors.
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Affiliation(s)
- Kycler Witold
- Department of Oncological Surgery of Gastrointestinal Diseases, Greater Poland Cancer Centre, 15 Garbary St., 61-866 Poznan, Poland
- Department of Head and Neck Surgery, Poznan University of Medical Sciences, 10 Fredry St., 61-701 Poznan, Poland
| | - Kubiak Anna
- Department of Epidemiology and Cancer Prevention, Greater Poland Cancer Registry – The Greater Poland Cancer Centre, 15 Garbary St., 61-866 Poznan, Poland
| | - Trojanowski Maciej
- Department of Epidemiology and Cancer Prevention, Greater Poland Cancer Registry – The Greater Poland Cancer Centre, 15 Garbary St., 61-866 Poznan, Poland
| | - Janowski Jakub
- Department of Oncological Surgery of Gastrointestinal Diseases, Greater Poland Cancer Centre, 15 Garbary St., 61-866 Poznan, Poland
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