Full
Outline
Objective: To evaluate the therapeutic potential of human milk oligosaccharides (HMOs) in mitigating age-related intestinal barrier dysfunction using D-galactose-induced aging mouse model. Methods: Aging was induced in mice via chronic intraperitoneal administration of D-galactose (450 mg/kg body weight [BW]) for 8 weeks. Concurrently, mice were orally administered HMOs—2'-fucosyllactose (2'-FL), 3'-sialyllactose (3'-SL), and lacto-N-neotetraose (LNnT)—at a dose of 500 mg/kg BW daily. After 8 weeks, the body weight changes, intestinal organ indices, oxidative stress levels, intestinal permeability, colonic morphology, and the proliferation and differentiation capabilities of stem cells in mice were measured and analyzed. Results: Following HMOs intervention, aging model mice demonstrated a pronounced recovery of intestinal health, with organ indices exhibiting a significant increase of 27.16%~33.74% (P<0.05). Serum superoxide dismutase activity increased significantly by 34.82%~99.83% (P<0.001), while malondialdehyde content decreased by 46.21%~61.79% (P<0.05 or P<0.01). Intestinal barrier integrity was reinforced, with FITC-dextran permeability decreasing by 48.45~62.84% (P<0.05 or P<0.01). Histological analyses revealed remarkable regenerative effects on colonic architecture, including significant increased in crypt number, crypt depth, proliferating cell nuclear antigen (PCNA)-positive cell counts, and cell differentiation (P<0.05 or P<0.01). Conclusion: HMOs intervention, particularly with 2'-FL, significantly enhanced the proliferation and differentiation capabilities of intestinal stem cells in D-galactose-induced aging mice. It improved the atrophy of colonic crypt morphology, strengthened the intestinal mucus barrier, and reduced intestinal permeability, thereby ameliorating the aging intestinal barrier.
106
46
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
