Effects of Dendrobium huoshanense polysaccharides on antioxidant capacity, mucosal barrier integrity and inflammatory responses in an aging rat ileal model
| Autor: | Rui Chen, Xue-Lian Hao, Xiao-Mei He, Lun-Bing Xia, Hai-Jun Xu, De-Liang Qiao, Fang-Li Gu, Chuan-Bao Wei |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
malondialdehyde Antioxidant medicine.medical_treatment lcsh:Biotechnology polysaccharides Dendrobium huoshanense Pharmacology tlr4 Polysaccharide 01 natural sciences dendrobium huoshanense 03 medical and health sciences chemistry.chemical_compound inflammatory factors lcsh:TP248.13-248.65 medicine Barrier integrity rat mucosal barrier 030304 developmental biology nf-κb chemistry.chemical_classification 0303 health sciences NF-κB Malondialdehyde humanities Antioxidant capacity chemistry TLR4 010606 plant biology & botany Biotechnology |
| Zdroj: | Biotechnology & Biotechnological Equipment, Vol 33, Iss 1, Pp 1444-1452 (2019) |
| ISSN: | 1314-3530 1310-2818 |
| Popis: | Polysaccharides are important pharmacologically active substances found in the perennial orchid Dendrobium huoshanense. In the present study, we sought to determine whether antioxidant and anti-inflammatory mechanisms were involved in Dendrobium huoshanense polysaccharides (DHPs)-mediated protection from D-galactose-induced intestine injury in an aging rat model. The effects of DHPs on ileal antioxidant capacity, mucosal barrier integrity and the inflammatory response were investigated in D-galactose-treated rats. The results showed that DHP administration largely attenuated the D-galactose-induced malondialdehyde (MDA), interleukin (IL)-6, tumor necrosis factor (TNF)-α, IL-4, IL-10, Toll-like receptor four and NF-κBp65 content increases and also markedly renewed the total antioxidant capacity and the claudin and occludin contents of ileal tissues from the D-galactose-treated rats. We also found that DHP more markedly affected the IL-6 and TNF-α levels than it did the IL-4 and IL-10 levels in the ileal tissues from the D-galactose-treated rats. These results suggest that DHPs can protect the rat ileum from D-galactose-induced injury by attenuating lipid peroxidation, improving antioxidant capacity and mucosal barrier integrity, correcting imbalanced inflammatory cytokine networks and suppressing the inflammatory response. The novel insights into the mechanism involved in DHPs protection of ileal health in our D-galactose-induced aging model rat advances current understanding of the aging process. |
| Databáze: | OpenAIRE |
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