Microbiota and Mental Health: Decoding the Gut-Brain Axis
DOI:
https://doi.org/10.12775/QS.2024.30.56737Keywords
brain-gut axis, microbiota, mental health, probiotics, neurodegenerative diseasesAbstract
Introduction: The gut-brain axis, a communication system between the gastrointestinal tract and the central nervous system, has garnered attention for its influence on mental health and neurological disorders. Central to this interaction is the gut microbiota, a diverse microbial community that regulates various physiological and psychological processes through neural, immune, and endocrine pathways.
Purpose of Work: This paper explores the role of the gut microbiota in shaping mental health and its potential involvement in neurological disorders. By systematically reviewing current research, the study aims to provide a comprehensive understanding of microbial mechanisms influencing brain function and their implications for novel therapeutic interventions.
State of Knowledge: Evidence suggests that gut microbiota dysbiosis is associated with conditions such as anxiety, depression, autism spectrum disorders, and neurodegenerative diseases. Mechanistic insights reveal microbial production of neurotransmitters, modulation of the immune system, and regulation of the gut-brain barrier as pivotal factors. While preclinical studies and emerging clinical trials demonstrate promising outcomes, variability in study designs and individual microbiota profiles pose challenges.
Material and methods: The research methodology entailed a systematic review of the relevant literature, followed by a screening process to identify pertinent studies. The investigation encompassed a comprehensive search across scientific databases, including PubMed and Google Scholar.
Summary: The gut-brain axis highlights the intricate relationship between gut microbiota and brain health, offering a paradigm shift in understanding mental health and neurological diseases. Advances in microbiota-targeted therapies, including probiotics and dietary interventions, underscore its potential, though further research is needed to validate clinical efficacy and develop personalized treatment approaches.
References
M. Carabotti, A. Scirocco, M. A. Maselli, and C. Severi, “The gut-brain axis: interactions between enteric microbiota, central and enteric nervous systems.,” Apr. 02, 2015, National Institutes of Health. Accessed: Dec. 2024. [Online]. Available: https://pubmed.ncbi.nlm.nih.gov/25830558
M. Kandpal et al., “Dysbiosis of Gut Microbiota from the Perspective of the Gut–Brain Axis: Role in the Provocation of Neurological Disorders,” Nov. 03, 2022, Multidisciplinary Digital Publishing Institute. doi: 10.3390/metabo12111064.
E. A. Mayer, R. Knight, S. K. Mazmanian, J. F. Cryan, and K. Tillisch, “Gut Microbes and the Brain: Paradigm Shift in Neuroscience,” Nov. 12, 2014, Society for Neuroscience. doi: 10.1523/jneurosci.3299-14.2014.
G. Sharon, T. R. Sampson, D. H. Geschwind, and S. K. Mazmanian, “The Central Nervous System and the Gut Microbiome,” Nov. 01, 2016, Cell Press. doi: 10.1016/j.cell.2016.10.027.
T. R. Sampson and S. K. Mazmanian, “Control of Brain Development, Function, and Behavior by the Microbiome,” May 01, 2015, Cell Press. doi: 10.1016/j.chom.2015.04.011.
B. D. Needham, R. Kaddurah‐Daouk, and S. K. Mazmanian, “Gut microbial molecules in behavioural and neurodegenerative conditions,” Oct. 16, 2020, Nature Portfolio. doi: 10.1038/s41583-020-00381-0.
T. G. Dinan and J. F. Cryan, “The impact of gut microbiota on brain and behaviour,” Sep. 12, 2015, Lippincott Williams & Wilkins. doi: 10.1097/mco.0000000000000221.
J. F. Cryan and T. G. Dinan, “Mind-altering microorganisms: the impact of the gut microbiota on brain and behaviour,” Sep. 12, 2012, Nature Portfolio. doi: 10.1038/nrn3346.
J. A. Foster and K. M. Neufeld, “Gut–brain axis: how the microbiome influences anxiety and depression,” Feb. 04, 2013, Elsevier BV. doi: 10.1016/j.tins.2013.01.005.
N. Sudo et al., “Postnatal microbial colonization programs the hypothalamic–pituitary–adrenal system for stress response in mice,” May 11, 2004, Wiley. doi: 10.1113/jphysiol.2004.063388.
J. A. Bravo et al., “Ingestion of Lactobacillus strain regulates emotional behavior and central GABA receptor expression in a mouse via the vagus nerve,” Aug. 29, 2011, National Academy of Sciences. doi: 10.1073/pnas.1102999108.
E. Y. Hsiao et al., “Microbiota Modulate Behavioral and Physiological Abnormalities Associated with Neurodevelopmental Disorders,” Dec. 01, 2013, Cell Press. doi: 10.1016/j.cell.2013.11.024.
A. E. Hoban et al., “Behavioural and neurochemical consequences of chronic gut microbiota depletion during adulthood in the rat,” Oct. 15, 2016, Elsevier BV. doi: 10.1016/j.neuroscience.2016.10.003.
T. R. Sampson et al., “Gut Microbiota Regulate Motor Deficits and Neuroinflammation in a Model of Parkinson’s Disease,” Dec. 01, 2016, Cell Press. doi: 10.1016/j.cell.2016.11.018.
G. Clarke et al., “The microbiome-gut-brain axis during early life regulates the hippocampal serotonergic system in a sex-dependent manner,” Jun. 12, 2012, Springer Nature. doi: 10.1038/mp.2012.77.
S. G. Cheung, A. Goldenthal, A. Uhlemann, J. J. Mann, J. M. Miller, and M. E. Sublette, “Systematic Review of Gut Microbiota and Major Depression,” Feb. 11, 2019, Frontiers Media. doi: 10.3389/fpsyt.2019.00034.
J. R. Kelly et al., “Transferring the blues: Depression-associated gut microbiota induces neurobehavioural changes in the rat,” Jul. 26, 2016, Elsevier BV. doi: 10.1016/j.jpsychires.2016.07.019.
G. D. Palma et al., “Transplantation of fecal microbiota from patients with irritable bowel syndrome alters gut function and behavior in recipient mice,” Mar. 01, 2017, American Association for the Advancement of Science. doi: 10.1126/scitranslmed.aaf6397.
M. G. Gareau et al., “Bacterial infection causes stress-induced memory dysfunction in mice,” Oct. 21, 2010, BMJ. doi: 10.1136/gut.2009.202515.
F. Mangiola, “Gut microbiota in autism and mood disorders,” Dec. 31, 2015, Baishideng Publishing Group. doi: 10.3748/wjg.v22.i1.361.
H. E. Vuong, J. M. Yano, T. C. Fung, and E. Y. Hsiao, “The Microbiome and Host Behavior,” Mar. 16, 2017, Annual Reviews. doi: 10.1146/annurev-neuro-072116-031347.
G. B. Rogers, D. J. Keating, R. L. Young, M. Wong, J. Licinio, and S. Wesselingh, “From gut dysbiosis to altered brain function and mental illness: mechanisms and pathways,” Apr. 19, 2016, Springer Nature. doi: 10.1038/mp.2016.50.
W. Feng, J. Liu, H. Ao, S. Yue, and C. Peng, “Targeting gut microbiota for precision medicine: Focusing on the efficacy and toxicity of drugs,” Jan. 01, 2020, Ivyspring International Publisher. doi: 10.7150/thno.47289.
M. Molska et al., “The Influence of Intestinal Microbiota on BDNF Levels,” Aug. 29, 2024, Multidisciplinary Digital Publishing Institute. doi: 10.3390/nu16172891.
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