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Altered Gut Microbiota is Involved in the Anti-Hypertensive Effects of Vitamin C in Spontaneously Hypertensive Rat. | LitMetric

Altered Gut Microbiota is Involved in the Anti-Hypertensive Effects of Vitamin C in Spontaneously Hypertensive Rat.

Mol Nutr Food Res

Department of Physiology and Pathophysiology, Shaanxi Engineering and Research Center of Vaccine, Key Laboratory of Environment and Genes Related to Diseases of Education Ministry of China, Xi'an Jiaotong University School of Basic Medical Sciences, Xi'an, China.

Published: April 2021

AI Article Synopsis

  • Gut dysbiosis and gut-brain-axis dysregulation are linked to hypertension, and Vitamin C (VC) has potential anti-hypertensive effects in hypertensive rats.
  • A study showed that daily VC intake (200 or 1000 mg/kg) improved blood pressure, gut microbiota diversity, and gut health in spontaneously hypertensive rats after 4 weeks.
  • The findings suggest that VC’s anti-hypertensive effects may stem from its ability to reshape gut microbiota and reduce inflammation and oxidative stress in the brain region responsible for blood pressure regulation.

Article Abstract

Scope: Gut dysbiosis and dysregulation of the gut-brain-axis contributes to the pathogenesis of hypertension. Vitamin C (VC) is a common dietary supplement that shows the ability to lower the elevated blood pressure in hypertensive animals. Thus, the hypothesis that the gut microbiota is involved in the anti-hypertensive effect of VC is proposed.

Methods And Results: The changes of the gut microbiota and pathology in a spontaneously hypertensive rat (SHR) model after daily oral intake of VC in dosage of 200 or 1000 mg kg are examined. After 4 weeks, the elevated blood pressure of SHRs in both VC-treated groups is attenuated. Sequencing of the gut microbiota shows improvement in its diversity and abundance. Bioinformatic analysis suggests restored metabolism and biosynthesis-related functions of the gut, which are confirmed by the improvement of gut pathology and integrity. Analysis of the hypothalamus paraventricular nucleus (PVN), the central pivot of blood pressure regulation, also shows reduced inflammatory responses and oxidative stress.

Conclusions: The reduced blood pressure, enriched gut microbiota, improved gut pathology and integrity, and reduced inflammatory responses and oxidative stress in the PVN together suggest that the anti-hypertensive effects of VC involve reshaping of gut microbiota composition and function.

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Source
http://dx.doi.org/10.1002/mnfr.202000885DOI Listing

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