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Gut microbiota in hypertension.

Pedro A Jose1, Dominic Raj

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Gut microbiota influences blood pressure and salt sensitivity through interactions with genetics and epigenetics. Factors like diet and antibiotics modulate these effects, impacting hypertension management.

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Area of Science:

  • Microbiology
  • Physiology
  • Genetics

Background:

  • Hypertension affects a quarter of the global population, contributing significantly to cardiovascular disease mortality.
  • The role of sodium intake in blood pressure regulation is complex and not fully understood.
  • Gut microbiota, kidney function, genetics, and epigenetics interplay in blood pressure control.

Purpose of the Study:

  • To review the interaction between gut microbiota and the kidney in regulating blood pressure.
  • To explore the influence of genetics and epigenetics on blood pressure and salt sensitivity.
  • To understand how gut microbiota affects blood pressure and hypertension.

Main Methods:

  • Review of existing literature on gut microbiota, kidney function, and blood pressure.
  • Analysis of studies involving animal models of hypertension (spontaneously hypertensive and Dahl salt-sensitive rats).
  • Examination of the impact of antibiotics and probiotics on gut microbiota and blood pressure.

Main Results:

  • Gut microbial composition (Firmicutes and Bacteroidetes) is linked to elevated blood pressure in hypertensive models.
  • Antibiotic-induced alterations in gut microbiota can modify blood pressure, influenced by host genotype.
  • Microbial fermentation products regulate energy expenditure, catecholamine metabolism, and ion transport, affecting salt sensitivity.

Conclusions:

  • The impact of gut microbiota on blood pressure is multifactorial, involving genetics, epigenetics, lifestyle, and antibiotic use.
  • These factors collectively influence blood pressure levels and the efficacy of hypertension management.
  • Understanding these interactions is crucial for developing novel therapeutic strategies for hypertension.