Environmental Stressors and Cardiopulmonary Health: Unraveling the Pathophysiological Interplay of Hypoxia, Smoke, and Air Pollution

Cardiopulmonary diseases remain a leading cause of global morbidity and mortality, with environmental exposures playing a pivotal role in their pathogenesis. Among these, chronic high-altitude hypoxia, tobacco smoke, and ambient air pollution represent three widespread, yet distinct, physiological stressors. While their individual detrimental effects are well-documented, a critical knowledge gap exists in understanding their synergistic interactions in provoking specific clinical syndromes such as heart failure, atrial fibrillation, and high-altitude pulmonary edema (HAPE).Globally, populations in high-altitude regions are increasingly exposed to air pollution and tobacco smoke. The combination of hypobaric hypoxia with the pro-inflammatory and pro-oxidant burdens of smoke and particulate matter may create a "perfect storm" for cardiopulmonary injury. This interplay is critically understudied in the context of specific disease pathways, for instance, how these combined stressors promote atrial electrical and structural remodeling to trigger AFib, precipitate or worsen heart failure through increased afterload and systemic inflammation, and lower the threshold for developing HAPE by exacerbating pulmonary hypertension and vascular permeability.The convergent pathophysiological pathways—particularly involving oxidative stress, systemic inflammation, autonomic nervous system dysregulation, and aberrant hypoxic signaling—likely form the common thread linking these diverse clinical outcomes. This research aims to bridge this gap by systematically investigating the integrative physiological mechanisms through which these environmental stressors interact to induce and exacerbate this spectrum of disease. By unraveling these complex interactions, our work seeks to inform novel strategies for risk stratification, early diagnosis, and targeted therapeutic interventions for vulnerable populations facing these compounded environmental challenges. Topic editors: Huiliang Qiu, Dong Wang, Pan Wang Source: https://www.frontiersin.org/research-topics/76414/environmental-stressors-and-cardiopulmonary-health-unraveling-the-pathophysiological-interplay-of-hypoxia-smoke-and-air-pollution