1
|
Zhuang S, Zhou X, Yang X, Chang D, Chen T, Sun Y, Wang C, Zhang C, Jiang J, Chen Y, Lin X, Wang X, Yu W, Lin X, He C, Zheng Y, Zhang J, Shi H. Dendrobium mixture ameliorates hepatic injury induced by insulin resistance in vitro and in vivo through the downregulation of AGE/RAGE/Akt signaling pathway. Heliyon 2023; 9:e22007. [PMID: 38034607 PMCID: PMC10685200 DOI: 10.1016/j.heliyon.2023.e22007] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 11/01/2023] [Accepted: 11/01/2023] [Indexed: 12/02/2023] Open
Abstract
Dendrobium mixture (DM) is a patented Chinese herbal medicine which has been shown to ameliorate type 2 diabetes mellitus (T2DM) with non-alcoholic fatty liver disease (NAFLD) in vivo and in vitro. We aimed to investigate the underlying mechanism of DM as a therapeutic agent in attenuating liver steatosis in relation to type 2 diabetes mellitus (T2DM). DM (16.2 g/kg/d) was administered to db/db mice for 4 weeks. The db/m mice and db/db mice in the control and model groups were given normal saline. Additionally, DM (11.25 g/kg/d) was administered to Sprague-Dawley (SD) rats, and the serum was collected and used in an experiment involving palmitic acid (PA)-induced human liver HepG2 cells with abnormal lipid and glucose metabolism. In db/db mice, the administration of DM significantly alleviated liver steatosis, including histological damage and cell apoptosis. DM was found to prevent the upregulation of the RAGE and AKT1 proteins in liver tissues. The underlying mechanism of DM was further studied in PA-induced HepG2 cells. Post-DM administration serum from SD rats reduced lipid accumulation and regulated glucose metabolism in HepG2 cells. Consequently, it inhibited RAGE/AKT signaling and restored autophagy activity. The upregulated autophagy was associated with the mTOR-AMPK signaling pathway. Furthermore, post-DM administration serum reduced apoptosis of hepatocytes in PA-induced HepG2 cells. Our study supports the potential use of DM as a therapeutic agent for the treatment of NAFLD in T2DM. The mechanism underlying this therapeutic potential is associated with the downregulation of the AGE/RAGE/Akt signaling pathway.
Collapse
Affiliation(s)
- Shuting Zhuang
- College of Integrated Traditional Chinese and Western Medicine, Fujian University of Traditional Chinese Medicine, Fu Zhou, 350100, China
| | - Xian Zhou
- NICM Health Research Institute, Western Sydney University, Westmead, NSW, 2006, Australia
| | - Xiaowen Yang
- College of Integrated Traditional Chinese and Western Medicine, Fujian University of Traditional Chinese Medicine, Fu Zhou, 350100, China
| | - Dennis Chang
- NICM Health Research Institute, Western Sydney University, Westmead, NSW, 2006, Australia
| | - Tao Chen
- College of Pharmacy, Fujian Key Laboratory of Chinese Materia Medica, Fujian University of Traditional Chinese Medicine, Fuzhou, 350100, China
| | - Yibin Sun
- College of Pharmacy, Fujian Key Laboratory of Chinese Materia Medica, Fujian University of Traditional Chinese Medicine, Fuzhou, 350100, China
| | - Chenxiang Wang
- College of Pharmacy, Fujian Key Laboratory of Chinese Materia Medica, Fujian University of Traditional Chinese Medicine, Fuzhou, 350100, China
| | - Chutian Zhang
- College of Integrated Traditional Chinese and Western Medicine, Fujian University of Traditional Chinese Medicine, Fu Zhou, 350100, China
| | - Jichao Jiang
- College of Integrated Traditional Chinese and Western Medicine, Fujian University of Traditional Chinese Medicine, Fu Zhou, 350100, China
| | - Yong Chen
- College of Integrated Traditional Chinese and Western Medicine, Fujian University of Traditional Chinese Medicine, Fu Zhou, 350100, China
| | - Xiaohui Lin
- College of Integrated Traditional Chinese and Western Medicine, Fujian University of Traditional Chinese Medicine, Fu Zhou, 350100, China
| | - Xiaoning Wang
- College of Integrated Traditional Chinese and Western Medicine, Fujian University of Traditional Chinese Medicine, Fu Zhou, 350100, China
| | - Wenzhen Yu
- College of Integrated Traditional Chinese and Western Medicine, Fujian University of Traditional Chinese Medicine, Fu Zhou, 350100, China
| | - Xinjun Lin
- College of Integrated Traditional Chinese and Western Medicine, Fujian University of Traditional Chinese Medicine, Fu Zhou, 350100, China
| | - Caigu He
- College of Integrated Traditional Chinese and Western Medicine, Fujian University of Traditional Chinese Medicine, Fu Zhou, 350100, China
| | - Yanfang Zheng
- College of Pharmacy, Fujian Key Laboratory of Chinese Materia Medica, Fujian University of Traditional Chinese Medicine, Fuzhou, 350100, China
| | - Jieping Zhang
- College of Integrated Traditional Chinese and Western Medicine, Fujian University of Traditional Chinese Medicine, Fu Zhou, 350100, China
| | - Hong Shi
- College of Integrated Traditional Chinese and Western Medicine, Fujian University of Traditional Chinese Medicine, Fu Zhou, 350100, China
| |
Collapse
|
2
|
Zheng Y, Zhou X, Wang C, Zhang J, Chang D, Zhuang S, Xu W, Chen Y, Wang X, Nan L, Sun Y, Lin X, Lin W, He C, Dai L, Zhang J, Chen J, Shi H, Huang M. Effect of dendrobium mixture in alleviating diabetic cognitive impairment associated with regulating gut microbiota. Biomed Pharmacother 2022; 149:112891. [PMID: 35367768 DOI: 10.1016/j.biopha.2022.112891] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 01/16/2022] [Revised: 03/16/2022] [Accepted: 03/24/2022] [Indexed: 11/26/2022] Open
Abstract
Dendrobium mixture (DM) is a patent Chinese herbal formulation consisting of Dendrobii Caulis, Astragali Radix, Rehmanniae Radix as the main ingredients. DM has been shown to alleviate diabetic related symptoms attributed to its anti-hyperglycaemic and anti-inflammatory activities. However, the effect on diabetic induced cognitive dysfunction has not been investigated. This study aims to investigate the effect of DM in improving diabetic cognitive impairment and associated mechanisms. Our study confirmed the anti-hyperglycaemic effect of DM and showed its capacity to restore the cognitive and memory function in high fat/high glucose and streptozotocin-induced diabetic rats. The neuroprotective effect was manifested as improved learning and memory behaviours, restored blood-brain barrier tight junction, and enhanced expressions of neuronal survival related biomarkers. DM protected the colon tight junction, and effectively lowered the circulated proinflammatory mediators including tumour necrosis factor-α, interleukin-6 and lipopolysaccharides. In the gut microbiota, DM corrected the increase in the abundance of Firmicutes, the increase in the ratio of Firmicutes/Bacteroidetes, and the decrease in the abundance of Bacteroidetes in diabetic rats. It also reversed the abundance of Lactobacillus, Ruminococcus and Allobaculum genera. Short chain fatty acids, isobutyric acid and ethylmethylacetic acid, were negatively and significantly correlated to Ruminococcus and Allobaculum. Isovaleric acid was positively and significantly correlated with Lactobacillus, which all contributing to the improvement in glucose level, systemic inflammation and cognitive function in diabetic rats. Our results demonstrated the potential of DM as a promising therapeutic agent in treating diabetic cognitive impairment and the underlying mechanism may be associated with regulating gut microbiota.
Collapse
Affiliation(s)
- Yanfang Zheng
- College of Pharmacy, Fujian Key Laboratory of Chinese Materia Medica, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Xian Zhou
- NICM Health Research Institute, Western Sydney University, Locked Bag, 1797 Penrith, NSW, Australia
| | - Chenxiang Wang
- College of Pharmacy, Fujian Key Laboratory of Chinese Materia Medica, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Jialin Zhang
- College of Integrated Traditional Chinese and Western Medicine, Fu Jian University of Traditional Chinese Medicine, Fu Zhou, China
| | - Dennis Chang
- NICM Health Research Institute, Western Sydney University, Locked Bag, 1797 Penrith, NSW, Australia
| | - Shuting Zhuang
- College of Integrated Traditional Chinese and Western Medicine, Fu Jian University of Traditional Chinese Medicine, Fu Zhou, China
| | - Wen Xu
- College of Pharmacy, Fujian Key Laboratory of Chinese Materia Medica, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Yong Chen
- College of Integrated Traditional Chinese and Western Medicine, Fu Jian University of Traditional Chinese Medicine, Fu Zhou, China
| | - Xiaoning Wang
- College of Integrated Traditional Chinese and Western Medicine, Fu Jian University of Traditional Chinese Medicine, Fu Zhou, China
| | - Lihong Nan
- College of Pharmacy, Fujian Key Laboratory of Chinese Materia Medica, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Yibin Sun
- College of Pharmacy, Fujian Key Laboratory of Chinese Materia Medica, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Xiaohui Lin
- College of Integrated Traditional Chinese and Western Medicine, Fu Jian University of Traditional Chinese Medicine, Fu Zhou, China
| | - Wei Lin
- College of Pharmacy, Fujian Key Laboratory of Chinese Materia Medica, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Caigu He
- College of Integrated Traditional Chinese and Western Medicine, Fu Jian University of Traditional Chinese Medicine, Fu Zhou, China
| | - Lian Dai
- Department of Medicine, The Third Affiliated People's Hospital, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Jieping Zhang
- College of Integrated Traditional Chinese and Western Medicine, Fu Jian University of Traditional Chinese Medicine, Fu Zhou, China.
| | - Jianyu Chen
- College of Pharmacy, Fujian Key Laboratory of Chinese Materia Medica, Fujian University of Traditional Chinese Medicine, Fuzhou, China.
| | - Hong Shi
- College of Integrated Traditional Chinese and Western Medicine, Fu Jian University of Traditional Chinese Medicine, Fu Zhou, China.
| | - Mingqing Huang
- College of Pharmacy, Fujian Key Laboratory of Chinese Materia Medica, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| |
Collapse
|