Bayo Jimenez Maria Teresa, Frenis Katie, Kröller-Schön Swenja, Kuntic Marin, Stamm Paul, Kvandová Miroslava, Oelze Matthias, Li Huige, Steven Sebastian, Münzel Thomas, Daiber Andreas
Department of Cardiology, Cardiology I, University Medical Center of the Johannes Gutenberg-University, Langenbeckstraße 1, 55131 Mainz, Germany.
Department of Pharmacology, University Medical Center of the Johannes Gutenberg-University, Langenbeckstraße 1, 55131 Mainz, Germany.
Antioxidants (Basel). 2021 Apr 19;10(4):625. doi: 10.3390/antiox10040625.
Vascular oxidative stress, inflammation, and subsequent endothelial dysfunction are consequences of traditional cardiovascular risk factors, all of which contribute to cardiovascular disease. Environmental stressors, such as traffic noise and air pollution, may also facilitate the development and progression of cardiovascular and metabolic diseases. In our previous studies, we investigated the influence of aircraft noise exposure on molecular mechanisms, identifying oxidative stress and inflammation as central players in mediating vascular function. The present study investigates the role of heme oxygenase-1 (HO-1) as an antioxidant response preventing vascular consequences following exposure to aircraft noise. C57BL/6J mice were treated with the HO-1 inducer hemin (25 mg/kg i.p.) or the NRF2 activator dimethyl fumarate (DMF, 20 mg/kg p.o.). During therapy, the animals were exposed to noise at a maximum sound pressure level of 85 dB(A) and a mean sound pressure level of 72 dB(A). Our data showed a marked protective effect of both treatments on animals exposed to noise for 4 days by normalization of arterial hypertension and vascular dysfunction in the noise-exposed groups. We observed a partial normalization of noise-triggered oxidative stress and inflammation by hemin and DMF therapy, which was associated with HO-1 induction. The present study identifies possible new targets for the mitigation of the adverse health effects caused by environmental noise exposure. Since natural dietary constituents can achieve HO-1 and NRF2 induction, these pathways represent promising targets for preventive measures.
血管氧化应激、炎症以及随后的内皮功能障碍是传统心血管危险因素的后果,所有这些因素都会导致心血管疾病。环境应激源,如交通噪音和空气污染,也可能促进心血管和代谢疾病的发生和发展。在我们之前的研究中,我们调查了飞机噪音暴露对分子机制的影响,确定氧化应激和炎症是介导血管功能的核心因素。本研究调查了血红素加氧酶-1(HO-1)作为一种抗氧化反应在预防飞机噪音暴露后血管后果方面的作用。用HO-1诱导剂血红素(25毫克/千克腹腔注射)或NRF2激活剂富马酸二甲酯(DMF,20毫克/千克口服)处理C57BL/6J小鼠。在治疗期间,将动物暴露于最大声压级为85分贝(A)、平均声压级为72分贝(A)的噪音中。我们的数据显示,两种治疗方法对暴露于噪音4天的动物均有显著的保护作用,使噪音暴露组的动脉高血压和血管功能障碍恢复正常。我们观察到,血红素和DMF治疗可使噪音引发的氧化应激和炎症部分恢复正常,这与HO-1的诱导有关。本研究确定了减轻环境噪音暴露所致不良健康影响的可能新靶点。由于天然饮食成分可实现HO-1和NRF2的诱导,这些途径是预防措施的有希望的靶点。
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