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Chronic arsenic exposure,endothelial dysfunction and risk of cardiovascular diseases

机译:慢性砷暴露,内皮功能障碍和心血管疾病的风险

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Cardiovascular diseases (CVDs) are the major causes of arsenic-related morbidity and mor-tality.Hypertension is a major risk of CVDs.Atherosclerosis is the main biochemical event of all forms of CVDs including hypertension.Atherosclerosis is a complex biochemical process in which several molecules are involved.However,underlying mechanism of arsenic exposure-related atherosclerosis leading CVDs especially hypertension has not yet been clearly understood.In our research,we have focused on the pathophysiology of arsenic-induced atherosclerosis leading to CVDs recruiting human subjects from arsenic-endemic and non-endemic rural areas in Bangladesh.We found that arsenic exposure metrics were positively associated with the elevated levels of diastolic (DBP) and systolic blood pressure (SBP) of the study subjects.We have also analyzed several circulating molecules related to vascular endothelial dysfunction and atherosclerosis including vasocon-strictors,and inflammatory,oxidative and adhesion molecules.We have demonstrated the relationship of arsenic exposure with these molecules.Our results suggest that exposure to arsenic is associated endothelial dysfunc-tion probably through its pro-oxidative and pro-inflammatory properties.Our results also suggest that chronic exposure to arsenic impairs the vascular homeostasis leading to the development of hypertension and other forms CVDs.Thus,endothelial dysfunction and related biochemical events are the hallmarks of arsenic-induced cardiovascular diseases.
机译:心血管疾病(心血管病)是砷有关的发病率的主要原因和MOR-tality.Hypertension是CVDs.Atherosclerosis的主要风险是所有形式的心血管病包括hypertension.Atherosclerosis的主要生化事件是一个复杂的生化过程,其中几个分子involved.However,根本砷暴露相关的动脉粥样硬化导致心血管病尤其是高血压至今尚未明确understood.In我们的研究机构,我们一直致力于病理生理砷中毒引起的动脉粥样硬化导致心血管病砷流行招募人类受试者和在Bangladesh.We非流行农村地区发现砷曝光指标均与舒张压(DBP)和收缩血压(SBP)的升高水平的研究subjects.We还分析有关的血管内皮几个循环分子缔合功能障碍和动脉粥样硬化包括vasocon-strictors和炎性,氧化和adhesi在molecules.We已经证明砷暴露的关系与这些molecules.Our结果表明砷可能是通过其亲氧化和促炎properties.Our结果相关的内皮dysfunc,针对这样的曝光也表明,长期接触砷也妨碍血管动态平衡,导致高血压和其它形式的CVDs.Thus,内皮功能障碍和相关的生化事件的发展是砷中毒引起的心血管疾病的标志。

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