Effect of tea polyphenols on the prevention of neurodegenerative diseases through gut microbiota DOI Creative Commons
Lei Xu, Rui Wang, Yanan Liu

et al.

Journal of Functional Foods, Journal Year: 2023, Volume and Issue: 107, P. 105669 - 105669

Published: July 5, 2023

Tea polyphenols (TPs) have shown several memory-enhancing activities. The gut microbiota is essential in developing neurodegenerative diseases as a critical regulator of brain-gut axis function. the modulates neuronal activity and activates microglia through immune system, amino acid metabolism, visceral nerves, thereby exerting regulatory effect on brain TPs advantage multi-targeting, high safety profiles compared to drugs great potential preventing treating diseases. In addition, they can effectively modulate composition microbiota. Studies been undertaken into mechanisms related preventative mediated by This review discussed preventive mechanism modulating host microbiota, may be regarded neuroprotective substances with efficiency.

Language: Английский

Overlapping Mechanisms of Action of Brain-Active Bacteria and Bacterial Metabolites in the Pathogenesis of Common Brain Diseases DOI Open Access
Tanja Patricia Eicher, M. Hasan Mohajeri

Nutrients, Journal Year: 2022, Volume and Issue: 14(13), P. 2661 - 2661

Published: June 27, 2022

The involvement of the gut microbiota and metabolites colon-residing bacteria in brain disease pathogenesis has been covered a growing number studies, but comparative literature is scarce. To fill this gap, we explored contribution microbiota-gut-brain axis to pathophysiology seven brain-related diseases (attention deficit hyperactivity disorder, autism spectrum schizophrenia, Alzheimer's disease, Parkinson's major depressive bipolar disorder). In article, discussed changes bacterial abundance metabolic implications these on development progression. Our central findings indicate that, mechanistically, all are associated with leaky gut, neuroinflammation, over-activated microglial cells, which gut-residing their important contributors. Patients show pro-inflammatory shift colon microbiota, harbouring more Gram-negative containing immune-triggering lipopolysaccharides (LPS) cell walls. addition, properties (

Language: Английский

Citations

85

Short-Chain Fatty Acids and Human Health: From Metabolic Pathways to Current Therapeutic Implications DOI Creative Commons
Sonia Facchin, Luisa Bertin, Erica Bonazzi

et al.

Life, Journal Year: 2024, Volume and Issue: 14(5), P. 559 - 559

Published: April 26, 2024

The gastrointestinal tract is home to trillions of diverse microorganisms collectively known as the gut microbiota, which play a pivotal role in breaking down undigested foods, such dietary fibers. Through fermentation these food components, short-chain fatty acids (SCFAs) acetate, propionate, and butyrate are produced, offering numerous health benefits host. production absorption SCFAs occur through various mechanisms within human intestine, contingent upon types fibers reaching specific engaged fermentation. Medical literature extensively documents supplementation SCFAs, particularly butyrate, treatment gastrointestinal, metabolic, cardiovascular, gut-brain-related disorders. This review seeks provide an overview dynamics involved gut. Additionally, it will focus on roles promoting metabolic health, well their current therapeutic implications.

Language: Английский

Citations

51

The gut microbiome, immune modulation, and cognitive decline: insights on the gut-brain axis DOI Creative Commons
Ruyi Zhang,

Ning Ding,

X. Feng

et al.

Frontiers in Immunology, Journal Year: 2025, Volume and Issue: 16

Published: Jan. 22, 2025

The gut microbiome has emerged as a pivotal area of research due to its significant influence on the immune system and cognitive functions. Cognitive disorders, including dementia Parkinson’s disease, represent substantial global health challenges. This review explores relationship between microbiota, modulation, decline, with particular focus gut-brain axis. Research indicates that bacteria produce metabolites, short-chain fatty acids (SCFAs), which affect mucosal immunity, antigen presentation, responses, thereby influencing A noteworthy correlation been identified imbalances in impairments, suggesting novel pathways for treatment disorders. Additionally, factors such diet, environment, pharmaceuticals play role shaping composition microbiome, subsequently impacting both health. article aims clarify complex interactions among regulation, evaluating their potential therapeutic targets. goal is promote microbiome-based treatments lay groundwork future this field.

Language: Английский

Citations

4

Fecal Microbiota Transplantation from Methionine-Restricted Diet Mouse Donors Improves Alzheimer’s Learning and Memory Abilities Through Short-Chain Fatty Acids DOI Creative Commons
Rencun Yu, Haimeng Zhang, Rui Chen

et al.

Foods, Journal Year: 2025, Volume and Issue: 14(1), P. 101 - 101

Published: Jan. 2, 2025

Alzheimer’s disease (AD) is marked by impaired cognitive functions, particularly in learning and memory, owing to complex diverse mechanisms. Methionine restriction (MR) has been found exert a mitigating effect on brain oxidative stress improve AD. However, the bidirectional crosstalk between gut through which MR enhances memory AD, as well effects of fecal microbiota transplantation (FMT) from mice AD mice, remains underexplored. In this study, APP/PS1 double transgenic were used an FMT experiment was conducted. 16S rRNA gene sequencing, targeted metabolomics, microbial metabolite short-chain fatty acids (SCFAs) feces samples analyzed. The results showed that reversed reduction SCFAs induced further activated free acid receptors, FFAR2 FFAR3, transport protein MCT1, thereby signaling mitigate inflammation enhance capabilities. Furthermore, methionine-restricted diet mouse donors receiving ameliorated ability SCFAs. This study offers novel non-pharmaceutical intervention strategies for prevention.

Language: Английский

Citations

3

Bee Pollen Phytochemicals and Nutrients as Unequaled Pool of Epigenetic Regulators: Implications for Age-Related Diseases DOI Creative Commons

Rachid Kacemi,

María G. Campos

Foods, Journal Year: 2025, Volume and Issue: 14(3), P. 347 - 347

Published: Jan. 21, 2025

Bee pollen is characterized by an exceptional diversity and abundance of micronutrients bioactive phytochemicals. This richness remains very sparsely investigated, but accumulating evidence strongly supports a promising future for bee in human nutrition medicine. Epigenetic regulation among the most compelling biomedical topics that remain completely untapped derivative research. In our current research, we identified numerous ubiquitous compounds are consistently present this matrix, regardless its botanical geographical origins, have been well studied documented as epigenetic regulators recent years. Given relative newness both research studies within nutritional, pharmaceutical, medical sciences, review aims to bridge these valuable fields advance related experimental investigations. To best knowledge, first work has aimed comprehensively investigate modulatory potential compounds. Our findings also unveiled several intriguing phenomena, such dual effect same compound depending on cellular context or some cross-generational heritability traits. Although whole extract still lacking, study clearly indicates avenue worth further We hope constitutes foundational cornerstone investigations

Language: Английский

Citations

2

Th17 cells and inflammation in neurological disorders: Possible mechanisms of action DOI Creative Commons
Yajun Shi, Bin Wei, Lingjun Li

et al.

Frontiers in Immunology, Journal Year: 2022, Volume and Issue: 13

Published: July 22, 2022

Neurological disorders (NDs) are one of the leading causes global death. A sustained neuroinflammatory response has been reported to be associated with pathogenesis multiple NDs, including Parkinson’s disease (PD), sclerosis (MS), Alzheimer’s (AD), amyotrophic lateral (ALS), and major depressive disorder (MDD). Accumulating evidence shows that recruitment abundant lymphocytes in central nervous system may contribute promoting development progress inflammation neurological disorders. As subset T lymphocytes, CD4 + cells have a critical impact on helper (Th) 17 is most studied Th subpopulations produces cytokines (e.g., IL-17A, IL-23, IL-21, IL-6, IFN-γ), abnormal excessive activation microglia other immune cell types. All these factors involved several However, possible mechanisms Th17 their immunopathology abovementioned not clarified completely. This review will summarize by which encephalitogenic inflammatory related strongly chronic neuroinflammation, thus perpetuating neurodegenerative processes NDs. Finally, potential therapeutic prospects NDs also discussed.

Language: Английский

Citations

66

The gut microbiome and Alzheimer’s disease: Complex and bidirectional interactions DOI Creative Commons
Rawan Tarawneh,

Elena Penhos

Neuroscience & Biobehavioral Reviews, Journal Year: 2022, Volume and Issue: 141, P. 104814 - 104814

Published: Aug. 4, 2022

Language: Английский

Citations

50

Microbiota-gut-brain axis in the Alzheimer's disease pathology - an overview DOI
Vijayasree V. Giridharan,

Carlos E. Barichello De Quevedo,

Fabrícia Petronilho

et al.

Neuroscience Research, Journal Year: 2022, Volume and Issue: 181, P. 17 - 21

Published: May 14, 2022

Language: Английский

Citations

43

The Brain–Gut Axis, an Important Player in Alzheimer and Parkinson Disease: A Narrative Review DOI Open Access
Eugenio Caradonna,

Raffaello Nemni,

Angelo Bifone

et al.

Journal of Clinical Medicine, Journal Year: 2024, Volume and Issue: 13(14), P. 4130 - 4130

Published: July 15, 2024

Neurodegenerative diseases, such as Alzheimer’s disease (AD) and Parkinson’s (PD), are severe age-related disorders with complex multifactorial causes. Recent research suggests a critical link between neurodegeneration the gut microbiome, via gut–brain communication pathway. This review examines role of trimethylamine N-oxide (TMAO), microbiota-derived metabolite, in development AD PD, investigates its interaction microRNAs (miRNAs) along this bidirectional TMAO, which is produced from dietary metabolites like choline carnitine, has been linked to increased neuroinflammation, protein misfolding, cognitive decline. In AD, elevated TMAO levels associated amyloid-beta tau pathologies, blood–brain barrier disruption, neuronal death. can cross promote aggregation amyloid proteins. Similarly, affects alpha-synuclein conformation aggregation, hallmark PD. also activates pro-inflammatory pathways NF-kB signaling, exacerbating neuroinflammation further. Moreover, modulates expression various miRNAs that involved neurodegenerative processes. Thus, microbiome–miRNA–brain axis represents newly discovered mechanistic dysbiosis neurodegeneration. MiRNAs regulate key oxidative stress, death, contributing progression. As direct consequence, specific miRNA signatures may serve potential biomarkers for early detection monitoring PD aims elucidate interrelationships microbiota, trimethylamine-N-oxide (miRNAs), central nervous system, implications these connections diseases. context, an overview current neuroradiology techniques available studying animal models used investigate intricate pathologies will be provided. summary, bulk evidence supports concept modulating pathway through changes, manipulation and/or miRNA-based therapies offer novel approaches implementing treatment debilitating neurological disorders.

Language: Английский

Citations

15

Metabolic rescue of α-synuclein-induced neurodegeneration through propionate supplementation and intestine-neuron signaling in C. elegans DOI Creative Commons
Chenyin Wang,

Meigui Yang,

Dongyao Liu

et al.

Cell Reports, Journal Year: 2024, Volume and Issue: 43(3), P. 113865 - 113865

Published: Feb. 26, 2024

Microbial metabolites that can modulate neurodegeneration are promising therapeutic targets. Here, we found the short-chain fatty acid propionate protects against α-synuclein-induced neuronal death and locomotion defects in a Caenorhabditis elegans model of Parkinson's disease (PD) through bidirectional regulation between intestine neurons. Both depletion dietary vitamin B

Language: Английский

Citations

10