|
1
|
Zhang M, Xu L, Chen L, Wu H, Jia L, Zhu H. Dendrobium officinale Polysaccharides as a Natural Functional Component for Acetic-Acid-Induced Gastric Ulcers in Rats. Molecules 2024; 29:880. [PMID: 38398633 PMCID: PMC10891678 DOI: 10.3390/molecules29040880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 02/10/2024] [Accepted: 02/12/2024] [Indexed: 02/25/2024] Open
Abstract
Dendrobium officinale is an important edible and medicinal plant, with the Dendrobium officinale polysaccharide (DOP) being its primary active constituent, known for its diverse biological activities. In this study, DOP was extracted and characterized for its structural properties. The potential of DOP to ameliorate gastric ulcers (GUs) was investigated using an acetic-acid-induced GU model in rats. The results demonstrated that DOP exerted a multifaceted protective effect against GU, mitigating the deleterious impact on food intake and body weight in rats. DOP exhibited its protective action by attenuating cellular damage attributed to oxidative stress and inflammatory reactions mediated by enhanced activities of SOD, GSH, and GSH-PX, coupled with a downregulation in the expression of pro-inflammatory cytokines, including IL-1β, IL-6, and TNF-α. Furthermore, DOP effectively inhibited apoptosis in gastric mucosa cells of acetic-acid-induced GU rat models and facilitated the self-repair of damaged tissues. Remarkably, the DOP-200 and DOP-400 groups outperformed omeprazole in reducing the expression of IL-6 and malondialdehyde (MDA) in tissues, as well as IL-1β, IL-6, and TNF-α in serum. These groups also exhibited an improved expression of SOD in tissues and SOD, GSH, and GSH-PX in serum. A Western blot analysis of gastric mucosa demonstrated that the DOP-200 and DOP-400 groups significantly reduced the expression of NF-κBp65, phosphorylated NF-κBp65, FoxO3a, and Bim. The observed antagonism to GU appeared to be associated with the NF-κB cell pathway. Additionally, qRT-PCR results indicate that DOP reduced the mRNA transcription levels of IL-6, and TNF-α, which shows that the healing of GU is related to the reduction in the inflammatory reaction by DOP. However, the expression of EGF and VEGF decreased, suggesting that the mechanism of DOP inhibiting GU may not be directly related to EGF and VEGF, or there is an uncertain competitive relationship between them, so further research is needed.
Collapse
Affiliation(s)
- Miao Zhang
- School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China; (M.Z.); (L.J.)
- Guangxi Science Research Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning 530200, China; (L.X.); (L.C.); (H.W.)
| | - Liba Xu
- Guangxi Science Research Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning 530200, China; (L.X.); (L.C.); (H.W.)
| | - Long Chen
- Guangxi Science Research Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning 530200, China; (L.X.); (L.C.); (H.W.)
- Department of Analytical Chemistry and Food Science, Faculty of Food Science and Technology, University of Vigo, 36310 Vigo, Spain
| | - Huan Wu
- Guangxi Science Research Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning 530200, China; (L.X.); (L.C.); (H.W.)
| | - Li Jia
- School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China; (M.Z.); (L.J.)
| | - Hua Zhu
- School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China; (M.Z.); (L.J.)
- Guangxi Science Research Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning 530200, China; (L.X.); (L.C.); (H.W.)
| |
Collapse
|
|
2
|
Zhao X, Meng Y, Liu Y, Sun Z, Cui K, Zhu L, Yang X, Mayo KH, Sun L, Cui S. Pectic polysaccharides from Lilium brownii and Polygonatum odoratum exhibit significant antioxidant effects in vitro. Int J Biol Macromol 2024; 257:128830. [PMID: 38123037 DOI: 10.1016/j.ijbiomac.2023.128830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/27/2023] [Accepted: 12/13/2023] [Indexed: 12/23/2023]
Abstract
Two pectic polysaccharides (WLBP-A3-c and WPOP-A-c) were isolated from traditional Chinese medicines Lilium brownii and Polygonatum odoratum, respectively. Monosaccharide composition, FT-IR, NMR and enzymatic analyses indicated that both WLBP-A3-c (59 kDa) and WPOP-A-c (33 kDa) contained homogalacturonan (HG), rhamnogalacturonan I (RG-I), and rhamnogalacturonan II (RG-II) domains, with mass ratios of 76.0: 17.2:6.8 and 76.8:10.6:12.6, respectively. Two RG-I domains WLBP-A3-c-DE1 and WPOP-A-c-DE1, correspondingly obtained from WLBP-A3-c and WPOP-A-c by enzymatic hydrolysis, were composed of repeating units of [→2)-α-L-Rhap-(1 → 4)-α-D-GalpA-(1→] with highly branched neutral sugar side chains at the O-4 position of Rhap, which contained arabinan, galactan, arabinogalactan I and II (AG-I and AG-II) side chains in different proportions. By comparison, WPOP-A-c exhibited higher scavenging effects against DPPH, ABTS and hydroxy radicals than WLBP-A3-c, probably because WPOP-A-c had higher contents of GalA residues and HG domains and lower molecular weight. Among three domains of WPOP-A-c, HG domain possessed the strongest activity in decreasing ROS production and promoting SOD activity, resulting in the effective protection of HepG2 cells against H2O2-induced oxidative stress. Our study provides evidence that pectins rich in HG domains from Lilium brownii and Polygonatum odoratum exhibit significant antioxidant effects, which hold potential for the application in the field of healthcare products.
Collapse
Affiliation(s)
- Xiaolin Zhao
- Engineering Research Center of Glycoconjugates of Ministry of Education, Jilin Provincial Key Laboratory On Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Yue Meng
- Engineering Research Center of Glycoconjugates of Ministry of Education, Jilin Provincial Key Laboratory On Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Ying Liu
- Engineering Research Center of Glycoconjugates of Ministry of Education, Jilin Provincial Key Laboratory On Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Ziyan Sun
- Engineering Research Center of Glycoconjugates of Ministry of Education, Jilin Provincial Key Laboratory On Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Kuo Cui
- Engineering Research Center of Glycoconjugates of Ministry of Education, Jilin Provincial Key Laboratory On Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Lei Zhu
- Engineering Research Center of Glycoconjugates of Ministry of Education, Jilin Provincial Key Laboratory On Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Xiaomin Yang
- Engineering Research Center of Glycoconjugates of Ministry of Education, Jilin Provincial Key Laboratory On Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Kevin H Mayo
- Department of Biochemistry, Molecular Biology & Biophysics, University of Minnesota, 6-155 Jackson Hall, Minneapolis, MN 55455, USA
| | - Lin Sun
- Engineering Research Center of Glycoconjugates of Ministry of Education, Jilin Provincial Key Laboratory On Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Sisi Cui
- Engineering Research Center of Glycoconjugates of Ministry of Education, Jilin Provincial Key Laboratory On Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University, Changchun 130024, China.
| |
Collapse
|
|
3
|
Yuan Y, Wang X, Wang Y, Liu Y, Zhao L, Zhao L, Cai S. The Gastroprotective Effect of Walnut Peptides: Mechanisms and Impact on Ethanol-Induced Acute Gastric Mucosal Injury in Mice. Nutrients 2023; 15:4866. [PMID: 38068724 PMCID: PMC10708498 DOI: 10.3390/nu15234866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 11/19/2023] [Accepted: 11/20/2023] [Indexed: 12/18/2023] Open
Abstract
The objective of this research was to explore the protective impact of walnut peptides (WP) against ethanol-induced acute gastric mucosal injury in mice and to investigate the underlying defense mechanisms. Sixty male BALB-c mice were divided into five groups, and they were orally administered distilled water, walnut peptides (200 and 400 mg/kg bw), and omeprazole (20 mg/kg bw) for 24 days. Acute gastric mucosal injury was then induced with 75% ethanol in all groups of mice except the blank control group. Walnut peptides had significant protective and restorative effects on tissue indices of ethanol-induced gastric mucosal damage, with potential gastric anti-ulcer effects. Walnut peptides significantly inhibited the excessive accumulation of alanine aminotransferase (ALT), aspartate transferase (AST), and malondialdehyde (MDA), while promoting the expression of reduced glutathione (GSH), total antioxidant capacity (T-AOC), glutathione disulfide (GSSG), and mouse epidermal growth factor (EGF). Furthermore, the Western blot analysis results revealed that walnut peptides significantly upregulated the expression of HO-1 and NQO1 proteins in the Nrf2 signaling pathway. The defensive impact of walnut peptides on the gastric mucosa may be achieved by mitigating the excessive generation of lipid peroxides and by boosting cellular antioxidant activity.
Collapse
Affiliation(s)
- Yutong Yuan
- Beijing Engineering and Technology Research Center of Food Additives, School of Food and Health, Beijing Technology and Business University, Beijing 100048, China; (Y.Y.); (X.W.); (Y.L.); (L.Z.)
- Beijing Key Laboratory of Functional Food from Plant Resources, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China;
| | - Xinyi Wang
- Beijing Engineering and Technology Research Center of Food Additives, School of Food and Health, Beijing Technology and Business University, Beijing 100048, China; (Y.Y.); (X.W.); (Y.L.); (L.Z.)
- Beijing Key Laboratory of Functional Food from Plant Resources, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China;
| | - Yumeng Wang
- Beijing Key Laboratory of Functional Food from Plant Resources, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China;
| | - Yaqi Liu
- Beijing Engineering and Technology Research Center of Food Additives, School of Food and Health, Beijing Technology and Business University, Beijing 100048, China; (Y.Y.); (X.W.); (Y.L.); (L.Z.)
| | - Liang Zhao
- Beijing Engineering and Technology Research Center of Food Additives, School of Food and Health, Beijing Technology and Business University, Beijing 100048, China; (Y.Y.); (X.W.); (Y.L.); (L.Z.)
| | - Lei Zhao
- Beijing Engineering and Technology Research Center of Food Additives, School of Food and Health, Beijing Technology and Business University, Beijing 100048, China; (Y.Y.); (X.W.); (Y.L.); (L.Z.)
| | - Shengbao Cai
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| |
Collapse
|