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Aerobic exercise and gut flora: a key link to improved cognitive impairment in mice with Parkinson's disease

ABSTRACT:

Parkinson's disease (PD) is a common neurodegenerative disorder. It is marked by motor dysfunction and cognitive decline. In recent years, scientific studies have found that PD's pathogenesis may be tied to an imbalance in the gut microbiota. This offers new perspectives for PD treatment. Modulating the gut microbiota is recognized as a potential way to enhance PD symptoms. While aerobic exercise can positively influence the gut microbiota, research on how the gut microbiota mediates aerobic exercise's effects on PD cognitive impairment is still limited. Thus, this study aimed to explore the potential mechanisms by which aerobic exercise improves cognitive impairment in PD patients. It does so by modulating the gut microbiota's structure and, in turn, improving cognitive function. Through this study, we hope to offer new strategies and a theoretical basis for treating PD cognitive impairment.

INSTRUMENT(S): Liquid Chromatography MS - positive - HILIC, Liquid Chromatography MS - negative - HILIC

PROVIDER: MTBLS13123 | MetaboLights | 2025-10-12

REPOSITORIES: MetaboLights

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			Action	DRS
	a_MTBLS13123_LC-MS_negative_hilic_metabolite_profiling.txt	Txt
	a_MTBLS13123_LC-MS_positive_hilic_metabolite_profiling.txt	Txt
	i_Investigation.txt	Txt
	m_MTBLS13123_LC-MS_negative_hilic_metabolite_profiling_v2_maf.tsv	Tabular
	m_MTBLS13123_LC-MS_positive_hilic_metabolite_profiling_v2_maf.tsv	Tabular

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Project description:Background: The long-term high-fat, high-sugar diet exacerbates type 2 diabetes mellitus (T2DM)-related cognitive impairments. The negative impact of poor dietary patterns on brain development and neurological function may be related to gut microbiota disturbance. The role of phlorizin in mitigating glucose and lipid metabolism disorders is well documented. However, the protective effect of phlorizin on diabetes-related cognitive dysfunction is unclear. Therefore, the present study aimed to investigate the effect of dietary supplementation of phlorizin on high-fat and high-fructose diet (HFFD)-induced cognitive dysfunction and evaluate the crucial role of the microbiota-gut-brain axis. Results: Dietary supplementation of phlorizin for 14 weeks effectively prevented glucolipid metabolism disorder, spatial learning impairment, and memory impairment in HFFD mice. In addition, phlorizin improved the HFFD-induced decrease in synaptic plasticity, neuroinflammation, and excessive activation of microglia in the hippocampus. Transcriptomics analysis shows that the protective effect of phlorizin on cognitive impairment was associated with increased expression of neurotransmitters and synapse-related genes in the hippocampus. Phlorizin treatment alleviated colon microbiota disturbance, mainly manifested by an increase in gut microbiota diversity and the abundance of short-chain fatty acid (SCFA)-producing bacteria. The level of microbial metabolites, including SCFA, inosine 5'-monophosphate (IMP), and D (-)-beta-hydroxybutyric acid (BHB) were also significantly increased after phlorizin treatment. Moreover, integrating multiomics analysis observed tight connections between phlorizin-regulated genes, microbiota, and metabolites. Furthermore, removal of the gut microbiota via antibiotics treatment diminished the protective effect of phlorizin against HFFD-induced cognitive impairment, underscoring the critical role of the gut microbiota in mediating cognitive behavior. Importantly, supplementation with SCFA and BHB alone mimicked the regulatory effects of phlorizin on cognitive function. Conclusions: These results indicate that gut microbiota and their metabolites mediate the ameliorative effect of phlorizin on HFFD-induced cognitive impairment. Therefore, phlorizin can be used as an easy-to-implement nutritional therapy to prevent and alleviate metabolism-related neurodegenerative diseases by targeting the regulation of the microbiome-gut-brain axis.

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Aerobic exercise and gut flora: a key link to improved cognitive impairment in mice with Parkinson's disease

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