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Ting WJ, Yang JJ, Kuo CH, Xiao ZJ, Lu XZ, Yeh YL, Day CH, Wen SY, Viswanadha VP, Jiang CH, Kuo WW, Huang CY. Environmental tobacco smoke increases autophagic effects but decreases longevity associated with Sirt-1 protein expression in young C57BL mice hearts. Oncotarget 2016; 7:39017-39025. [PMID: 27167200 PMCID: PMC5129910 DOI: 10.18632/oncotarget.9176] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 04/16/2016] [Indexed: 11/25/2022] Open
Abstract
Recently, a survey by the Centers for Disease Control and Prevention (CDC) reported that nearly 90% of U.S. adult smokers began smoking at the age of 18. This demonstrates that the exposure to environmental tobacco smoke (ETS) of youngsters today is changing from passive smoking to active smoking (direct inhalation of tobacco). In the current study, an investigation of ETS exposure in young C57BL mice was conducted. After 6 weeks of ETS exposure, the Sirt-1 protein level was decreased and cardiac autophagy was increased in C57BL mice. Furthermore, the IGF2R cardiac hypertrophy signaling pathway was also triggered, although cardiac apoptosis and hypertrophy were not induced. Youngsters' desire to look more mature is one of the psychological factors that impacts smoking amongst young people. Our results suggest that though ETS exposure might cause cardiac autophagy amongst youngsters, the loss of the longevity Sirt-1 protein and the increase in IGF2R cardiac hypertrophy signaling could still promote heart diseases that are age-specific.
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Affiliation(s)
- Wei-Jen Ting
- The Sixth Affiliated Hospital of Guangzhou Medical University, Guangdong, China
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan
| | - Jaw-Ji Yang
- Institute of Medicine, School of Dentistry, Chung-Shan Medical University, Taichung, Taiwan
| | - Chia-Hua Kuo
- Department of Sports Sciences, University of Taipei, Taipei, Taiwan
| | - Zi-Jun Xiao
- National Taichung First Senior High School, Taichung, Taiwan
| | - Xin-Ze Lu
- National Taichung First Senior High School, Taichung, Taiwan
| | - Yu-Lan Yeh
- Department of Pathology, Changhua Christian Hospital, Changhua, Taiwan
- Jen-Teh Junior College of Medicine, Nursing and Management, Miaoli, Taiwan
| | | | - Su-Ying Wen
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan
- Department of Dermatology, Taipei City Hospital, Renai Branch, Taipei, Taiwan
| | | | - Chong-He Jiang
- The Sixth Affiliated Hospital of Guangzhou Medical University, Guangdong, China
| | - Wei-Wen Kuo
- Department of Biological Science and Technology, China Medical University, Taichung, Taiwan
| | - Chih-Yang Huang
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan
- Graduate Institute of Chinese Medical Science, China Medical University, Taichung, Taiwan
- Department of Health and Nutrition Biotechnology, Asia University, Taichung, Taiwan
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