A study conducted by a team of researchers at LSU Health New Orleans has shown for the first time that chronic exposure to inhaled nicotine alone increases blood pressure (hypertension), in both the body’s general circulation and in the lungs that can lead to pulmonary hypertension.
A study conducted by a team of researchers at LSU Health New Orleans has shown for the first time that chronic exposure to inhaled nicotine alone increases blood pressure (hypertension), in both the body’s general circulation and in the lungs that can lead to pulmonary hypertension. The study also found that nicotine-induced pulmonary hypertension is accompanied by changes in the size, shape and function (remodeling) of the blood vessels in the lung and the right lower chamber of the heart. Results are published in the May 2020 issue of Hypertension, available here.
Although cigarette smoking is the single most important risk factor for developing cardiovascular and lung diseases, the role of nicotine in the development of disease has not been well understood. The researchers used a novel nicotine inhalation model in mice that closely mimics human smokers/e-cigarette users to examine the effects of chronic nicotine inhalation on the development of cardiovascular and pulmonary disease with a focus on blood pressure and cardiac remodeling.
The researchers documented that nicotine inhalation increased systemic systolic and diastolic blood pressure as early as the first week of exposure. “The increase was transient, but was sufficiently long to pose potential health risks in individuals with preexisting cardiopulmonary conditions,” notes Eric Lazartigues, PhD, Professor of Pharmacology at LSU Health New Orleans School of Medicine.
Read more at Louisiana State University
Image Credit: Louisiana State University
