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口服丙烯酰胺通过肺部氧化应激的加剧使哮喘小鼠的气道炎症反应恶化。

Oral Administration of Acrylamide Worsens the Inflammatory Responses in the Airways of Asthmatic Mice Through Agitation of Oxidative Stress in the Lungs.

机构信息

Research Center for Food Hygiene and Safety, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.

Department of Biology, Faculty of Basic Sciences, Maragheh University, Maragheh, Iran.

出版信息

Front Immunol. 2020 Oct 9;11:1940. doi: 10.3389/fimmu.2020.01940. eCollection 2020.

Abstract

Acrylamide is a toxic chemical substance produced when starch-rich foods are fried at high temperatures. Asthma is a chronic and complicated respiratory disease, of which genetic and environmental factors are the main triggers. Orally-received components may have an effect on asthma pathophysiology. The aim of this study was to investigate the role of AA as a stimulus in asthma. BALB/c mice were allocated into four groups as follows: two OVA-sensitized asthmatic groups, including one treated with AA by gavage feeding and one non-treated (asthma group), and two healthy (non-asthmatic) groups, one treated with AA by gavage feeding and one non-treated (negative control group). Airway hyperresponsiveness, cell count, cytokine levels in BAL fluid, lung histopathology, IgE levels, and oxidative stress indices including plasma level of MDA, pulmonary antioxidant enzymes (SOD and CAT) levels, HP content, and collagen fiber accumulation in lung tissue were measured. We found that the group of mice treated with both OVA and AA (asthmatic and AA-treated mice) experienced higher levels of asthma-associated biomarkers, including higher enhanced pause (Penh value), eosinophilic inflammation, mucus hyper secretion, goblet cell hyperplasia, total and OVA-specific IgE levels, IL-4, IL-5, and IL-13 levels than the group sensitized only with OVA (asthmatic mice). The OVA-AA-treated mice also experienced worsened levels of oxidative stress indicators. Healthy (non-asthmatic) mice that only received AA were in similar conditions to healthy untreated mice (negative control group). The OVA-AA-treated group showed more severe allergic asthma symptoms in comparison to the group only sensitized with OVA. Therefore, food/water contaminated with AA can act as a stimulant of allergic asthma and exacerbate the bronchial inflammatory responses.

摘要

丙烯酰胺是一种在富含淀粉的食物高温油炸时产生的有毒化学物质。哮喘是一种慢性且复杂的呼吸道疾病,其主要诱因包括遗传和环境因素。口服摄入的成分可能对哮喘病理生理学产生影响。本研究旨在探讨 AA 作为哮喘刺激物的作用。将 BALB/c 小鼠分为四组:两组 OVA 致敏的哮喘组,其中一组通过灌胃给予 AA,一组未治疗(哮喘组),两组健康(非哮喘)组,一组通过灌胃给予 AA,一组未治疗(阴性对照组)。测量气道高反应性、BAL 液中的细胞计数、细胞因子水平、肺组织病理学、IgE 水平以及氧化应激指标,包括血浆 MDA 水平、肺抗氧化酶(SOD 和 CAT)水平、HP 含量和肺组织胶原纤维积累。我们发现,同时接受 OVA 和 AA 治疗的小鼠(哮喘和 AA 治疗组)经历了更高水平的哮喘相关生物标志物,包括更高的增强呼气暂停(Penh 值)、嗜酸性粒细胞炎症、黏液高分泌、杯状细胞增生、总 IgE 和 OVA 特异性 IgE 水平、IL-4、IL-5 和 IL-13 水平,比仅用 OVA 致敏的小鼠(哮喘小鼠)更高。OVA-AA 治疗组的氧化应激指标也更差。仅接受 AA 的健康(非哮喘)小鼠与未治疗的健康小鼠(阴性对照组)情况相似。与仅用 OVA 致敏的组相比,OVA-AA 治疗组显示出更严重的过敏性哮喘症状。因此,食物/水中的 AA 可以作为过敏性哮喘的刺激物,并加重支气管炎症反应。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7d6b/7581680/f1cada07ca90/fimmu-11-01940-g0001.jpg

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