Chronic exposure to water-pipe smoke induces cardiovascular dysfunction in mice

Abderrahim Nemmar, Suhail Al-Salam, Priya Yuvaraju, Sumaya Beegam, Javed Yasin, Badreldin H. Ali

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Water-pipe tobacco smoking is becoming prevalent in all over the world including Western countries. There are limited data on the cardiovascular effects of water-pipe smoke (WPS), in particular following chronic exposure. Here, we assessed the chronic cardiovascular effects of nose-only WPS exposure in C57BL/6 mice. The duration of the session was 30 minutes/day, 5 days/week for 6 consecutive months. Control mice were exposed to air. WPS significantly increased systolic blood pressure. The relative heart weight and plasma concentrations of troponin-I and B-type natriuretic peptide were increased in mice exposed to WPS. Arterial blood gas analysis showed that WPS caused a significant decrease in PaO2 and an increase in PaCO2. WPS significantly shortened the thrombotic occlusion time in pial arterioles and venules and increased the number of circulating platelet. Cardiac lipid peroxidation, measured as thiobarbituric acid-reactive substances, was significantly increased, while superoxide dismutase activity, total nitric oxide activity, and glutathione concentration were reduced by WPS exposure. Likewise, immunohistochemical analysis of the heart revealed an increase in the expression of inducible nitric oxide synthase and cytochrome c by cardiomyocytes of WPS-exposed mice. Moreover, hearts of WPS-exposed mice showed the presence of focal interstitial fibrosis. WPS exposure significantly increased heart DNA damage assessed by Comet assay. We conclude that chronic nose-only exposure to WPS impairs cardiovascular homeostasis. Our findings provide evidence that long-term exposure to WPS is harmful to the cardiovascular system and supports interventions to control the spread of WPS, particularly amid youths. New & Noteworthy No data are available on the chronic cardiovascular effects of water-pipe smoke (WPS). Our findings provide experimental evidence that chronic exposure to WPS increased blood pressure, relative heart weight, troponin I, and B-type natriuretic peptide in plasma and induced hypoxemia, hypercapnia, and thrombosis. Moreover, WPS caused cardiac oxidative stress, DNA damage, and fibrosis.

Original languageEnglish
Pages (from-to)H329-H339
JournalAmerican Journal of Physiology - Heart and Circulatory Physiology
Volume312
Issue number2
DOIs
Publication statusPublished - Feb 17 2017

Fingerprint

Smoke
Water
Troponin I
Brain Natriuretic Peptide
Blood Pressure
Nose
DNA Damage
Fibrosis
Smoking
Weights and Measures
Western World
Blood Gas Analysis
Comet Assay
Venules
Thiobarbituric Acid Reactive Substances
Hypercapnia
Arterioles
Nitric Oxide Synthase Type II
Cardiovascular System
Cytochromes c

Keywords

  • Blood gas
  • Blood pressure
  • Chronic nose-only exposure
  • DNA damage
  • Heart
  • Oxidative stress
  • Thrombosis
  • Water-pipe smoke

ASJC Scopus subject areas

  • Physiology
  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)

Cite this

Chronic exposure to water-pipe smoke induces cardiovascular dysfunction in mice. / Nemmar, Abderrahim; Al-Salam, Suhail; Yuvaraju, Priya; Beegam, Sumaya; Yasin, Javed; Ali, Badreldin H.

In: American Journal of Physiology - Heart and Circulatory Physiology, Vol. 312, No. 2, 17.02.2017, p. H329-H339.

Research output: Contribution to journalArticle

Nemmar, Abderrahim ; Al-Salam, Suhail ; Yuvaraju, Priya ; Beegam, Sumaya ; Yasin, Javed ; Ali, Badreldin H. / Chronic exposure to water-pipe smoke induces cardiovascular dysfunction in mice. In: American Journal of Physiology - Heart and Circulatory Physiology. 2017 ; Vol. 312, No. 2. pp. H329-H339.
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