Aircraft Noise Exposure Worsens Cardiovascular and Oxidative Injury in Diabetic Mice
Overview
This study demonstrates that aircraft noise exposure exacerbates cardiovascular dysfunction, oxidative stress, and inflammation in three mouse models of diabetes. Noise exposure further impairs insulin production, increases blood pressure, and aggravates endothelial dysfunction, highlighting additive adverse effects in diabetic conditions.
Background
Transportation noise is recognized as a cardiovascular risk factor linked to increased oxidative stress, inflammation, and endothelial dysfunction. Epidemiological data associate traffic noise with higher risks of metabolic diseases such as type 2 diabetes mellitus (T2DM). However, the combined impact of noise exposure on pre-existing diabetes and its molecular mechanisms remain insufficiently understood. This study investigates how aircraft noise influences cardiovascular and metabolic complications in three distinct diabetic mouse models.
Data Highlights
Parameter
Effect of Noise in Diabetic Mice
Insulin Production
Reduced across all diabetes models
Oral Glucose Tolerance
Additive impairment observed only in high-fat diet (HFD) model
Blood Pressure
Increased by noise exposure
Endothelial Dysfunction
Aggravated in aortic, mesenteric, and cerebral arterioles
Reactive Oxygen Species (ROS) Formation
Increased in cerebral arterioles, aorta, heart, and mitochondria
Mitochondrial Respiration
Impaired by diabetes and noise, no additive effect
Adipose Tissue
Increased ROS and inflammation in HFD model
Key Findings
Aircraft noise exposure reduces insulin production in all tested diabetic mouse models.
Noise increases blood pressure and worsens endothelial dysfunction in both small and large vessels.
Reactive oxygen species generation is consistently elevated by noise in diabetic mice, indicating enhanced oxidative stress.
Mitochondrial respiration is impaired by diabetes and noise, though no additive impairment was observed.
Noise induces inflammation and oxidative stress in adipose tissue, particularly in the high-fat diet model.
Gene expression analyses reveal additive effects of noise and diabetes on pathways related to inflammation and metabolism.
Clinical Implications
These findings suggest that environmental noise exposure may potentiate cardiovascular risk in patients with diabetes by exacerbating oxidative stress, inflammation, and vascular dysfunction. Clinicians should consider environmental noise as a modifiable risk factor when managing diabetic patients, especially those with existing cardiovascular complications. Further human studies are warranted to evaluate noise mitigation strategies as part of comprehensive diabetes care.
Conclusion
Aircraft noise exposure amplifies cardiovascular and oxidative injury in diabetic conditions, underscoring the importance of addressing environmental noise to reduce cardiometabolic risk in vulnerable populations. This study highlights the need for integrated approaches to manage diabetes and environmental stressors.
References
Kränkel et al. 2023 -- Aircraft Noise Exposure Intensifies Cardiovascular and Oxidative Injury in Three Diabetic Mouse Models
by Dominika Mihalikova, Paul Stamm, Miroslava Kvandova, Chinmayi Pednekar, Lea Strohm, Henning Ubbens, Matthias Oelze, Marin Kuntic, Claudius Witzler, Maria Teresa Bayo Jimenez, Sanela Rajlic, Katie Frenis, Qi Tang, Yue Ruan, Susanne Karbach, Hartmut Kleinert, Omar Hahad, Alex von Kriegsheim, Ning Xia, Tilman Grune, Huige Li, Swenja Kröller-Schön, Adrian Gericke, Wolfram Ruf, Philipp S Wild, Philipp Lurz, Thomas Münzel, Andreas Daiber, Thomas Jansen
