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Ji MS, Yang XY, Hao Y, Shi J. Histomorphological and Biochemical Analysis of Rat Model of Menopausal Skin Aging. Bull Exp Biol Med 2022; 172:377-380. [DOI: 10.1007/s10517-022-05396-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Indexed: 11/29/2022]
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Anti-fatigue effect of phlorizin on exhaustive exercise-induced oxidative injury mediated by Nrf2/ARE signaling pathway in mice. Eur J Pharmacol 2021; 918:174563. [PMID: 34942162 DOI: 10.1016/j.ejphar.2021.174563] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 09/23/2021] [Accepted: 10/11/2021] [Indexed: 12/21/2022]
Abstract
Oxidative stress plays a crucial role in fatigue, thus it is of significance to develop safe and efficient antioxidant to prevent fatigue. Phlorizin (PHZ) is a major active ingredient of dihydrochalcone from Lithocarpus polystachyus Rehd., which has already been approved as a new food material in China since 2017. The current study was designed to investigate the effect of PHZ on fatigue, and further to elucidate its possible underlying mechanism. Our results revealed that PHZ exerted beneficial effect on exhaustive exercise-induced fatigue in mice, as reflected by rotarod test and exhaustive swimming test. Moreover, PHZ also effectively decreased the levels of blood urea nitrogen, creatine kinase and plasma lactic acid, increased the liver glycogen and skeletal muscle glycogen of fatigued mice, as evidenced by enzyme linked immunosorbent assay. PHZ balanced the redox status through reducing generation of reactive oxygen species, enhancing the activities of antioxidative enzymes. Furthermore, PHZ not only increased the ratio of Bcl2/Bax, but also decreased the level of cleaved-caspase 3. Notably, PHZ facilitated nuclear factor erythroid 2-related factor 2 (Nrf2) translocated from cytoplasm to nucleus, and up-regulated its downstream antioxidant response element including heme oxygenase-1 and NADPH quinone oxidoreductase-1. Intriguingly, PHZ directly bound to Nrf2, as evidenced by molecular docking, and the anti-fatigue effects of PHZ were almost abolished in Nrf2 deficient mice. In summary, our findings suggest that PHZ might be a natural occurring antioxidant with safety profile to relieve fatigue via targeting Nrf2 to inhibit apoptosis.
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Gao S, Heng N, Liu F, Guo Y, Chen Y, Wang L, Ni H, Sheng X, Wang X, Xing K, Xiao L, Qi X. Natural astaxanthin enhanced antioxidant capacity and improved semen quality through the MAPK/Nrf2 pathway in aging layer breeder roosters. J Anim Sci Biotechnol 2021; 12:112. [PMID: 34732261 PMCID: PMC8567604 DOI: 10.1186/s40104-021-00633-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 08/31/2021] [Indexed: 11/26/2022] Open
Abstract
Background Natural astaxanthin (ASTA) has strong antioxidant properties and has been widely used as a health product to improve human health. However, the effects of ASTA on the reproductive performance of aging roosters have been poorly studied. We aimed to investigate the effects of dietary ASTA on semen quality and antioxidant capacity in aging roosters and to explore the potential mechanism of semen quality change via anti-oxidation defense system. Methods In the present study, 96 53-week-old Jinghong No. 1 layer breeder roosters were fed a corn-soybean meal basal diet containing 0, 25, 50, or 100 mg/kg ASTA for 6 weeks. Results Semen quality in the ASTA groups remarkably improved than that in the control group, and antioxidant activities, the abilities to scavenge hydroxyl radicals and superoxide anions, increased gradually with ASTA addition (P < 0.05). In addition, the mRNA levels of antioxidant enzymes as well as the mRNA and protein levels of the mitogen-activated protein kinase (MAPK) and nuclear factor-erythroid 2-related factor 2 (Nrf2) were markedly increased in the 50–100 mg/kg ASTA group (P < 0.05). Conclusions Collectively, these results demonstrate that dietary ASTA may improve semen quality by increasing antioxidant enzyme activities and the ability to scavenge hydroxyl radicals, which may be related to upregulation of the MAPK/Nrf2 pathway.
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Affiliation(s)
- Shan Gao
- Animal Science and Technology College, Beijing University of Agriculture, Beijing, 102206, China
| | - Nuo Heng
- Animal Science and Technology College, Beijing University of Agriculture, Beijing, 102206, China
| | - Fang Liu
- School of Economics and Management, Beijing University of Agriculture, Beijing, 102206, China
| | - Yong Guo
- Animal Science and Technology College, Beijing University of Agriculture, Beijing, 102206, China
| | - Yu Chen
- Department of Livestock and Poultry Products Testing, Beijing General Station of Animal Husbandry, Beijing, 100107, China
| | - Liang Wang
- Department of Livestock and Poultry Products Testing, Beijing General Station of Animal Husbandry, Beijing, 100107, China
| | - Hemin Ni
- Animal Science and Technology College, Beijing University of Agriculture, Beijing, 102206, China
| | - Xihui Sheng
- Animal Science and Technology College, Beijing University of Agriculture, Beijing, 102206, China
| | - Xiangguo Wang
- Animal Science and Technology College, Beijing University of Agriculture, Beijing, 102206, China
| | - Kai Xing
- Animal Science and Technology College, Beijing University of Agriculture, Beijing, 102206, China
| | - Longfei Xiao
- Animal Science and Technology College, Beijing University of Agriculture, Beijing, 102206, China
| | - Xiaolong Qi
- Animal Science and Technology College, Beijing University of Agriculture, Beijing, 102206, China.
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