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Open AccessJournal ArticleDOI

Impact of microbiota on central nervous system and neurological diseases: the gut-brain axis.

TLDR
The biological interplay between gut-brain axis is discussed, and how this communication may be dysregulated in neurological diseases is explored, and new insights in modification of gut microbiota composition are highlighted.
Abstract
Development of central nervous system (CNS) is regulated by both intrinsic and peripheral signals. Previous studies have suggested that environmental factors affect neurological activities under both physiological and pathological conditions. Although there is anatomical separation, emerging evidence has indicated the existence of bidirectional interaction between gut microbiota, i.e., (diverse microorganisms colonizing human intestine), and brain. The cross-talk between gut microbiota and brain may have crucial impact during basic neurogenerative processes, in neurodegenerative disorders and tumors of CNS. In this review, we discuss the biological interplay between gut-brain axis, and further explore how this communication may be dysregulated in neurological diseases. Further, we highlight new insights in modification of gut microbiota composition, which may emerge as a promising therapeutic approach to treat CNS disorders.

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Journal ArticleDOI

Toxicity of Microplastics and Nanoplastics in Mammalian Systems

TL;DR: The prevailing data suggest that micro- and nanoplastic accumulation in mammalian and human tissues would likely have negative, yet unclear long-term consequences, and there is a need for cellular and systemic toxicity due to micro-and nanoplastics to be better illuminated, and the underlying mechanisms defined by further work.
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The Gut-Brain Axis: How Microbiota and Host Inflammasome Influence Brain Physiology and Pathology.

TL;DR: The status of the knowledge and the open questions in the field focusing on the function of intestinal microbial metabolites or products on CNS cells during healthy and inflammatory conditions, such as multiple sclerosis, Alzheimer's and Parkinson’s diseases, and also neuropsychiatric disorders are discussed.
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Role of gut-brain axis, gut microbial composition, and probiotic intervention in Alzheimer's disease.

TL;DR: As aging together with poor diet and gut-derived inflammatory response due to dysbiosis contributes to the pathogenesis of AD, modification of gut microbial composition by uptake of probiotic-rich food can act as a preventive/therapeutic option for AD.
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Current and Future Trends on Diagnosis and Prognosis of Glioblastoma: From Molecular Biology to Proteomics.

TL;DR: Both benefits and pitfalls of molecular biology and proteomics analyses are discussed, including the different mass spectrometry-based analytical techniques, highlighting how these investigation strategies are powerful tools to study the biology of glioblastoma, as well as to develop advanced methods for the management of this pathology.
Journal ArticleDOI

Gut microbial molecules in behavioural and neurodegenerative conditions.

TL;DR: Bacterial metabolites with known or suspected neuromodulatory activity are described, mechanisms of signalling pathways from the gut microbiota to the brain are defined and direct effects that gut bacterial molecules are likely exerting on specific brain cells are discussed.
References
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Journal ArticleDOI

NLRP3 inflammasome-driven pathways in depression: Clinical and preclinical findings.

TL;DR: This review discusses both preclinical and clinical evidence that links the assembly of the NLRP3 complex and the subsequent proteolysis and release of the pro-inflammatory cytokines interleukin-1β (IL-1 β) and interleokin-18 ( IL-18) in chronic stress models and patients with MDD and focuses on the therapeutic potential of targeting theNLRP3 inflammasome complex to improve stress resilience and depressive symptoms.
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Accumulation of α-synuclein in the bowel of patients in the pre-clinical phase of Parkinson’s disease

TL;DR: It is shown that α-synuclein accumulation occurs prior to the onset of motor symptoms in the upper, as well as the lower gastrointestinal tract, remains present in serial biopsies until the onsetof motor symptoms and is predominantly composed of phosphorylated α- synuclein.
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Gut microbiota in early pediatric multiple sclerosis: a case-control study.

TL;DR: Microbial community profiles were compared between early onset pediatric multiple sclerosis (MS) and control children similar for age and sex.
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Diffusion of Macromolecules in the Brain: Implications for Drug Delivery

TL;DR: How quantitative diffusion measurements can be used to better understand and potentially improve upon CNS drug delivery by modeling delivery within and across species, screening drugs and drug conjugates, evaluating methods for altering drug distribution, and appreciating important changes in drug distribution that may occur with CNS disease or injury are discussed.
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The gut microbiota-derived metabolite trimethylamine N -oxide is elevated in Alzheimer’s disease

TL;DR: CSF TMAO is higher in individuals with MCI and AD dementia compared to cognitively-unimpaired individuals, and elevated CSF T MAO is associated with biomarkers of AD pathology (phosphorylated tau and phosphorylation tau/Aβ42) and neuronal degeneration (total t Tau and neurofilament light chain protein).
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