The role of the gut microbiome and metabolites in the pathogenesis of essential hypertension

Essential hypertension is a widespread cardiovascular disease which medical researchers today do not fully understand. Recent research studies have identified gut microbiome functions which control blood pressure through its metabolic products. The research team conducted a case-control study to analyze gut microbiome composition and microbial metabolite profiles in essential hypertension patients from the adult population of Uzbekistan. The researchers enrolled 120 essential hypertension patients and 120 control participants who matched the study group in both age and sex. The researchers used 16S rRNA gene sequencing to assess gut microbiome composition while gas and liquid chromatography determined the concentration of microbial metabolites. The study discovered that patient microbiome diversity declined significantly while the patient group exhibited a Firmicutes to Bacteroidetes ratio of 3.5 which differed from the control group's ratio of 1.6. The patients showed a significant decrease in short-chain fatty acid concentration, while their butyrate levels increased from 0.15 μmol/g in the control group to 6.7 μmol/g in the patients. The patients had a trimethylamine N-oxide concentration of 2.6 μmol/l which differed from the control group's value of 4.3 μmol/l. The serum lipopolysaccharide levels functioned as an intestinal permeability measure, which showed 2.2 times increase in patients compared to the control group, while it demonstrated a strong positive relationship with interleukin-17. The combined model of microbial and metabolic variables with an area under the curve of 0.92 had high diagnostic power in differentiating patients from healthy individuals. The study results demonstrate that intestinal dysbiosis contributes to essential hypertension development through protective metabolite loss and increased intestinal permeability, while microbiome modulation emerges as an innovative treatment approach.

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