Antibiotics attenuate experimental hypertension in rats

Area of Science:

• Physiology
• Pharmacology
• Microbiology

Background:

• Hypertension is a significant global health concern.
• Adrenocorticotropic hormone (ACTH) and corticosterone are key regulators of blood pressure.
• The gut microbiome's role in hypertension is an emerging area of research.

Purpose of the Study:

• To investigate the effect of antibiotics on experimentally induced hypertension in rats.
• To determine if neomycin or vancomycin can attenuate blood pressure increases.

Main Methods:

• Hypertension was induced in Sprague-Dawley rats using intramuscular injections of corticosterone or ACTH.
• Rats were pretreated with neomycin or vancomycin.
• Spontaneously hypertensive rats were administered oral neomycin.

Main Results:

• Neomycin and vancomycin pretreatment attenuated blood pressure increases in response to corticosterone or ACTH.
• Neither antibiotic alone affected blood pressure or growth.
• Oral neomycin administration reduced high blood pressure in stroke-prone spontaneously hypertensive rats.

Conclusions:

• Antibiotics, specifically neomycin and vancomycin, can modulate experimental hypertension.
• These findings suggest a potential link between the gut microbiome and blood pressure regulation.
• Further research into antibiotic-mediated modulation of hypertension is warranted.