益生菌改善与衰老相关的认知障碍和病理变化,通过缓解端粒缩和增强老化加速小鼠容易发生的线粒体功能,改善了8只小鼠的老化加速小鼠
Siquan Zhou1,2, Shufang Shan3, Ruirui Li2
1West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China.
Journal of agricultural and food chemistry
|November 14, 2025
概括
像Lactobacillus delbrueckii,Streptococcus thermophilus和Bifidobacterium longum这样的益生菌在小鼠中显示出抗衰老作用. 这些有益的细菌改善了老年小鼠的认知功能和线粒体健康.
科学领域:
- 微生物学 微生物学
- 神经科学是一个神经科学.
- 老年学是一门学科.
背景情况:
- 与衰老相关的认知障碍与DNA损伤和线粒体功能障碍有关.
- 目前对与年龄相关的认知衰退的治疗方法有限.
- 某些益生菌可能提供一种新的治疗方法.
研究的目的:
- 在老年小鼠中研究乳杆菌delbrueckii (LD),热球菌 (ST) 和长菌 (LB) 的抗衰老作用.
- 为了确定这些益生菌是否可以改善认知衰退和潜在的细胞损伤.
- 探索益生菌组合对衰老标志物的影响.
主要方法:
- LD,ST,LB,以及它们的组合,在24周内给老化加速易于老化的小鼠8 (SAMP8) 的小鼠.
- 评估了认知和记忆功能.
- 评估了神经元损伤,突触可塑性,端粒长度和线粒体功能.
- 分析了肠道微生物群和代谢物概况.
主要成果:
- 益生菌及其组合减轻了神经元损伤,增强了突触可塑性.
- 端粒磨损得到缓解,线粒体功能得到改善.
- 在接受益生菌治疗的小鼠中,认知和记忆功能显著增强.
- 肠道微生物群组成和代谢物概况发生了有利的变化.
结论:
- 益生菌在老年小鼠中表现出显著的抗衰老作用,主要是通过减轻端粒磨损和增强线粒体功能.
- 益生菌组合显示出比单个菌株更明显的效果.
- 这些发现支持益生菌作为治疗年龄相关认知障碍的治疗策略的潜力.
更多相关视频
08:17A Mouse Model of Orthopedic Surgery to Study Postoperative Cognitive Dysfunction and Tissue Regeneration
Published on: February 27, 2018
17.0K
08:52Measurement of Protein Turnover Rates in Senescent and Non-Dividing Cultured Cells with Metabolic Labeling and Mass Spectrometry
Published on: April 6, 2022
4.0K
相关概念视频
Aging
577
Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
577
Mitochondria
19.5K
Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
19.5K
The Effect of Aging on Tissues
3.1K
Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
3.1K
