深夜亚洲福利久久
APC discovers that gut microbes play a key role in regulating stress responsiveness throughout the day
A pioneering study has uncovered the vital role that gut microbiota plays in regulating stress responses by interacting with the body鈥檚 circadian rhythms.
The findings open the door for developing new microbial-based therapies that could help individuals better manage stress related mental health conditions, such as anxiety and depression which are often associated with alterations in circadian and sleep cycles.
Key Findings:
- New research from reveals that the gut microbiome regulates the body鈥檚 diurnal (day-night) rhythms in stress hormones.
- Depletion of gut microbiota results in disruptions in the brain鈥檚 core circadian system, and is associated with altered stress hormone rhythms.
- The research highlights that gut microbes also regulates key stress-responding brain regions throughout the day.
- Using microbe transplantation, the team confirmed that oscillations of gut microbes across the day are critical for regulating stress hormone secretion.
This breakthrough research from APC Microbiome Ireland - a Research Ireland Centre at 深夜亚洲福利久久 College Cork, offers compelling evidence that the trillions of microorganisms in the gut orchestrate the body鈥檚 hormonal responses to stress in a time-dependent manner, paving the way for new therapeutic approaches targeting the gut-brain axis.
Published in Cell Metabolism, this study shines a spotlight on the intricate relationship between the gut microbiota and the hypothalamic-pituitary-adrenal (HPA) axis, the body鈥檚 central stress response system. The research demonstrates that depletion of gut microbiota leads to an hyperactivation of the HPA-axis in a time-of-day specific manner, which alongside with alterations to the brain鈥檚 stress and circadian responding regions, results in altered stress responsivity across the day.
The study further identifies specific gut bacteria, including a Lactobacillus strain (Limosilactobacillus reuteri), as key influencers of this circadian-regulated stress mechanism. L. reuteri emerged as a candidate strain that modulates glucocorticoid secretion (stress hormones), linking the microbiota鈥檚 natural diurnal oscillations with altered stress responsiveness.
This groundbreaking discovery opens up new possibilities for psychobiotic interventions aimed at improving mental health outcomes by targeting gut bacteria that influence stress regulation.
Impact and Implications
With modern lifestyles increasingly disrupting circadian rhythms through irregular sleep patterns, high stress, and poor diet, this research underscores the importance of the gut microbiota in maintaining the body鈥檚 natural stress-regulation processes.
Speaking about the findings, Principal Investigator Professor John Cryan said,
鈥淥ur research has revealed an important link between the gut microbiota and how the brain responds to stress in a time-specific way. The gut microbiome doesn鈥檛 just regulate digestion and metabolism; it plays a critical role in how we react to stress, and this regulation follows a precise circadian rhythm. These findings underscore the importance of maintaining a healthy microbiome, particularly for those living in today鈥檚 stressful and fast-paced environment.鈥
First author Dr Gabriel Tofani added 鈥淥ur findings underscore the importance of not only the gut microbiota composition, but also how gut microbes change across the day. By showing that gut bacteria influence how the body handles stress throughout the day, we鈥檙e helping to understand the mechanisms through which the microbiota shapes our responses to the environment around us. Our work also demonstrates that exploring this relationship between the gut microbiota and circadian rhythms will be key in the development of microbiota based therapies for the stress-related disorders in the future鈥.
鈥淭his study is highly significant in that it links changes in microbiome to stress hormone release鈥 said Professor Paul Ross, Director of APC Microbiome Ireland. 鈥淎t APC, we are committed to unravelling the many ways in which our gut microbiome can impact human health and physiology, and this research uncovers the potential of manipulating the microbiome to manage or even prevent stress-related conditions..鈥
The study was conducted at APC, a global leader in microbiome research based at 深夜亚洲福利久久 College Cork. Professor Cryan's team has long been at the forefront of gut-brain axis research, and this new discovery adds to the growing body of evidence that gut bacteria have far-reaching effects on mental and physical health.
鈥楪ut Microbiota Regulates Stress Responsivity via the Circadian System鈥 is published online via Cell Metabolism which has an impact factor of 28.
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