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Gut Microbiota Essay

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Gut microbiota has a regulatory effect in intestinal and extra-intestinal homeostasis, and may also have a regulatory role on brain and behavior. Evidence from animal models suggests an association between disturbances in gut microbiota composition and neurophysiological disorders. There appears to be an emerging concept that the circadian rhythm and gut microbiota influence epigenetic regulation taking part in neuronal cell function. [1] Figure 1

A study of the salivary microbiome provides evidence that the host regulates the composition of this microbiome through genes participating in global regulation of circadian rhythm. The analysis of salivary microbial abundances significantly oscillates within a period of 24 hours. This circadian oscillation is demonstrated to be completely abolished when the salivary microbiota is studied by in vitro incubation, leading to the conclusion that host physiological changes do play an important role. Metagenomics analysis showed that the circadian oscillations clearly favored different process at different times of the 24-hour period. In the evening, the responses of transporters and two-component regulatory systems were favored, while in the morning the metabolism such as …show more content…

In this study, a high fiber diet and acetate supplementation, change the gut microbiota to prevent development of hypertension and heart failure in hypertensive mice. The analysis of transcriptomes in these animals showed fiber and acetate diet have a protective effect by downregulating the genes in cardiac hypertrophy, cardiorenal fibrosis, and inflammation. Also, there was an observed upregulation of genes of the circadian rhythm, and downregulation of renin-angiotensin system that contributes to hypertension. The molecular changes resulted in improved cardiovascular health and function. [4] figure

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