Related Experiment Video
Updated: Mar 2, 2026

Preparation of Authigenic Pyrite from Methane-bearing Sediments for In Situ Sulfur Isotope Analysis Using SIMS
Published on: August 31, 2017
Sulfur dioxide: foe or friend for life?
Xin-Bao Wang1, Hong Cui1, Xiaohong Liu1
1Department of Pediatrics, Beijing Friendship Hospital, Capital Medical University, Beijing, P.R. China.
Abstract:
Sulfur dioxide (SO₂) is a toxic gas and air pollutant. The toxic effects of SO₂ have been extensively studied. Oxidative damage due to SO₂ can occur in multiple organs. Inhaled SO₂ can also cause chromosomal aberrations, DNA damage and gene mutations in mammals. However, SO₂ can also be generated from the sulfur-containing amino acid, L-cysteine. Recent studies have shown that SO₂ has a vasorelaxant effect, and ameliorates pulmonary hypertension and vascular remodeling. SO₂ can also reduce lung injury and myocardial injury in rats. In addition, SO₂ reduces myocardial ischemia-reperfusion injury and atherosclerotic lesions. Therefore, SO₂ exerts both detrimental and protective effects in mammals. Is SO₂ a foe or friend for life?.
Related Concept Videos
The Sulfur Cycle
Sulfur Assimilation
Anoxygenic Photosynthesis
Preparation and Reactions of Sulfides
Carbon-dioxide Fixation
Preparation and Reactions of Thiols

