蒸汽诱导的蛋白质溶解导致气道表面脱水.
Arunava Ghosh1, Raymond D Coakley2, Neil E Alexis3
1Department of Cell Biology & Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27514, USA.
International journal of molecular sciences
|October 28, 2023
概括
蒸汽和吸烟会增加气道蛋白酶,导致上皮通道 (ENaC) 激活和肺部脱水. 这种脱水,类似于吸烟的影响,可能会导致vapers的肺部疾病.
科学领域:
- 肺部医学 肺部医学
- 细胞生物学 细胞生物学
- 毒理学 毒理学 毒理学
背景情况:
- 蛋白酶,如中性粒细胞弹性酶,激活上皮质通道 (ENaC),导致呼吸道脱水.
- 蒸汽引入潜在的气道刺激物和蛋白酶,但它们对ENaC和水分的影响尚不清楚.
研究的目的:
- 研究吸烟者呼吸道中蛋白酶水平增加对ENaC活性和呼吸道脱水的影响.
- 为了比较蒸汽和吸烟对气道水分和ENAC功能的影响.
主要方法:
- 人类支气管上皮培养物 (HBEC) 暴露于非吸烟者,吸烟者和吸烟者的支气管洗液 (BALF).
- 气道表面液体 (ASL) 的高度使用共聚焦显微镜进行测量;ENaC裂纹通过西式涂抹进行评估.
- 暴露在电子液体中的中性粒细胞分泌物在HBECs上进行了测试.
主要成果:
- 吸烟者和吸烟者的BALF同样增加了ENaC活性,并降低了ASL高度,与非吸烟者的BALF不同.
- 蛋白酶抑制剂减轻了ASL高度的下降,表明蛋白酶参与.
- 吸烟者和吸烟者的BALF诱导了ENaC裂变;暴露在电子液体中的中性粒细胞分泌物模仿了这一效应.
结论:
- 蒸汽者呼吸道蛋白酶水平升高会激活ENaC,导致呼吸道显著脱水.
- 电子烟和吸烟一样,预计会导致肺表面脱水,并可能导致COPD,喘和CF等肺部疾病.
- 这些发现突出了蒸汽可能损害肺部健康的机制.
相关概念视频
Chronic Obstructive Pulmonary Disease-II: Pathophysiology
2.8K
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
2.8K
Acute Respiratory Failure-V
143
The treatment for acute respiratory failure varies based on factors like the underlying cause, overall health, and severity. A collaborative healthcare team is essential for early detection, often through arterial blood gas analysis. Identifying the cause is the primary goal, with treatment strategies adjusted for ventilation/perfusion (V/Q) mismatch, shunting, or diffusion impairment.
Ensure that patients are monitored continuously for their response to therapy, including changes in...
Ensure that patients are monitored continuously for their response to therapy, including changes in...
143
Stimulants
220
Stimulants are substances that enhance neural activity and elevate dopamine levels in the brain, leading to their highly addictive nature. These drugs include cocaine, amphetamines, MDMA, caffeine, and nicotine, each with distinct mechanisms of action and varied health implications.
Cocaine can be administered via snorting, injection, or smoking. It primarily functions by blocking the reuptake of dopamine, resulting in a euphoric high characterized by an intense sensation of happiness and...
Cocaine can be administered via snorting, injection, or smoking. It primarily functions by blocking the reuptake of dopamine, resulting in a euphoric high characterized by an intense sensation of happiness and...
220
Pulmonary Cycle: Exhalation
1.6K
In terms of human respiration, the act of expelling air, known as exhalation (or expiration), operates on the principle of pressure gradients. During expiration, the pressure within the lungs exceeds that of the surrounding atmosphere. Under normal conditions, quiet breathing involves passive exhalation and is free of muscular contractions. This is because the exhalation process is driven by the natural elastic recoil of the lungs and chest wall, both of which have an inherent tendency to...
1.6K
Asthma: Pathogenesis and Management
421
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.
421


