在早产婴儿中远端肺上皮质成熟:早产婴儿的肺是否在出生后继续其功能性肺发育?
Raluca Chirculescu1,2, Paul Cristian Balanescu1,3, Gheorghe Peltecu1,4
1Carol Davila University of Medicine and Pharmacy, Bucharest, Romania.
Journal of medicine and life
|July 2, 2025
概括
过早分娩会导致由于不成熟的肺部导致呼吸困扰. 这项研究发现所有早产新生儿中都存在表面活性剂,NAPSIN A的表达与促进肺成熟的因素有关.
科学领域:
- 新生儿科学 新生儿科学
- 肺部医学 肺部医学
- 发展生物学 发展生物学
背景情况:
- 过早分娩会扰乱肺部发育,导致由于表面活性剂缺乏而导致呼吸困扰综合征 (RDS).
- 随着极度早产,RDS的严重程度会增加,这凸显了了解肺成熟的必要性.
- 功能性肺成熟对于新生儿呼吸系统健康至关重要.
研究的目的:
- 评估在早产新生儿中产后肺功能成熟的存在和模式.
- 为了研究表面活性剂和纳普辛A在早产婴儿的肺组织中的表达.
- 为了将标记物表达与产前和产后因素相关联.
主要方法:
- 对表面活性剂和纳普辛A的免疫组织化学测定是在67名早产新生儿 (23-35周妊娠年龄) 的肺组织上进行的.
- 使用光学显微镜分析了组织微阵列 (5微米).
- 远端肺表皮中的标记物表达与妊娠年龄,寿命,氧气治疗,机械呼吸,产前皮质类固醇和孕产妇感染有关.
主要成果:
- 在所有新生儿的肺组织中检测到表面活性剂,无论妊娠年龄或寿命如何.
- 纳普辛A的表达强度与妊娠年龄,氧气治疗/机械通风的持续时间,产前皮质类固醇的使用,以及母亲感染有正相关.
- 机械通风和产前干预似乎促进了肺功能和表面活性剂的产生.
结论:
- 所有研究的早产新生儿都表现出表面活性剂,这表明即使在不成熟的肺部也存在表面活性剂.
- 纳普辛A表达作为一个由机械通风,产前皮质类固醇和孕产妇感染影响的肺成熟的标志物.
- 这些因素增强肺功能和表面活性剂的产生,这对于管理早产婴儿的呼吸困难至关重要.
相关概念视频
01:17Pulmonary Cycle: Exhalation
1.8K
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...
1.8K
01:05Breathing
60.4K
The process of breathing, inhaling and exhaling, involves the coordinated movement of the chest wall, the lungs, and the muscles that move them. Two muscle groups with important roles in breathing are the diaphragm, located directly below the lungs, and the intercostal muscles, which lie between the ribs. When the diaphragm contracts, it moves downward, increasing the volume of the thoracic cavity and creating more room for the lungs to expand. When the intercostal muscles contract, the ribs...
60.4K
01:25Pulmonary Function Tests
437
Pulmonary Function Tests (PFTs)
Pulmonary Function Tests are crucial diagnostic tools for assessing respiratory function, particularly in patients with chronic respiratory disorders. They comprehensively evaluate lung volumes, ventilatory function, breathing mechanics, diffusion, and gas exchange. These tests help diagnose pulmonary diseases and play a significant role in monitoring disease progression, evaluating disability, and assessing response to therapy.
PFTs involve using a spirometer, a...
Pulmonary Function Tests are crucial diagnostic tools for assessing respiratory function, particularly in patients with chronic respiratory disorders. They comprehensively evaluate lung volumes, ventilatory function, breathing mechanics, diffusion, and gas exchange. These tests help diagnose pulmonary diseases and play a significant role in monitoring disease progression, evaluating disability, and assessing response to therapy.
PFTs involve using a spirometer, a...
437
01:26Alveoli and Alveolar Ducts
3.3K
The respiratory zone of the human body, which stands in contrast to the conducting zone, comprises the structures that actively participate in the exchange of gases. The initiation of this zone is marked by the terminal bronchioles converging into respiratory bronchioles, the tiniest bronchiole classification. The respiratory bronchioles give way to the alveolar ducts that opens into a congregation of alveoli. Actively involved in gas exchange, alveoli resemble tiny sacs similar to clusters of...
3.3K