香烟烟雾通过TNF-α调解鼻上皮质屏障功能障碍
Ju Guo1, Xuan Meng1, Yao-Ming Zheng2
1The First Affiliated Hospital of Nanchang University, Nanchang, China.
American journal of rhinology & allergy
|July 10, 2023
概括
香烟烟雾会通过减少密集结蛋白和增加炎症来损害鼻腔屏障. 这种功能障碍与瘤亡因子-α (TNF-α) 有关,并且随着更长时间的暴露而恶化.
科学领域:
- 呼吸系统医学 呼吸系统医学
- 毒理学 毒理学 毒理学
- 细胞生物学 细胞生物学
背景情况:
- 众所周知,香烟烟雾会损害肺上皮屏障.
- 香烟烟雾对鼻上皮质屏障的影响在很大程度上是未知的.
研究的目的:
- 为了研究香烟烟雾对鼻上皮质屏障功能的影响.
- 为了阐明香烟烟雾引起的鼻上皮质损伤的潜在机制.
主要方法:
- 鼠被暴露在香烟烟雾中3个月或6个月,以评估炎症标志物和屏障功能.
- 人类支气管上皮细胞在体外培养有或没有瘤亡因子-α (TNF-α),以检查蛋白质连续性和紧结表达.
主要成果:
- 在老鼠中,暴露于香烟烟雾导致紧结蛋白减少和炎症因子增加 (IL-8,IL-6,TNF-α).
- 在体外,TNF-α破坏了支气管上皮细胞中的连续性和下调紧结蛋白.
结论:
- 暴露在香烟烟雾中会破坏鼻腔粘膜屏障,损伤的严重程度与暴露时间相关.
- 在香烟烟雾引起的鼻上皮质屏障功能障碍中,TNF-α通过影响紧密结合蛋白起到作用.
相关概念视频
Chronic Obstructive Pulmonary Disease-II: Pathophysiology
2.9K
Chronic Obstructive Pulmonary Disease (COPD) pathophysiology is intricate and multifaceted, involving a complex interplay of physiological processes. Understanding these mechanisms is crucial for effectively managing and treating COPD. Here is an in-depth look at the critical elements in the pathophysiology of COPD:
Chronic Inflammation
Chronic Inflammation
2.9K
NF-κB-dependent Signaling Pathway
7.5K
The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
The...
NF-κB-dependent Signaling Mechanism
The...
7.5K
COPD: Pathogenesis and Clinical Features
355
Chronic obstructive pulmonary disease (COPD) is a group of lung conditions that progressively worsen over time, including chronic bronchitis and emphysema. This cluster of diseases collectively leads to a gradual and irreversible decline in lung function over time.
The primary cause for the onset of COPD is cigarette smoking and exposure to air pollution. These hazardous factors initiate a chain reaction within the lungs, resulting in chronic inflammation, damage to the airways, and a...
The primary cause for the onset of COPD is cigarette smoking and exposure to air pollution. These hazardous factors initiate a chain reaction within the lungs, resulting in chronic inflammation, damage to the airways, and a...
355
Asthma: Pathogenesis and Management
450
Asthma is a chronic pulmonary condition involving inflammation of the airways, hyper-reactivity, and reversible obstruction of the airways. This condition can significantly impact a person's quality of life, making breathing difficult and leading to distressing symptoms.
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.
Asthma is classified as allergic and non-allergic. Allergens such as dust mites, pollen, and pet dander trigger allergic asthma, while factors like cold air, intense emotions, or exercise can induce non-allergic asthma.
450


