表面活性蛋白B缺乏:RespiRare队列中的一个
Manon Fleury1, Céline Delestrain2,3, Léa Roditis4
1Assistance Publique - Hôpitaux de Paris, Pediatric Pulmonology Department and Reference Center for Rare Lung Diseases RespiRare, Armand Trousseau Hospital, Sorbonne University, Paris, France.
Thorax
|December 4, 2024
概括
严重的表面活性蛋白 (SP) -B缺乏导致致命的婴儿肺部疾病. 然而,极为罕见的具有部分SP-B功能的低形态变异可能会使患有间歇性肺部疾病的儿童能够存活.
科学领域:
- 肺部病理学 肺部病理学
- 遗传学 遗传学 是一个
- 儿科 儿科 儿科
背景情况:
- 儿童间歇性肺病 (chILD) 是一种罕见且严重的呼吸系统疾病.
- 表面活性蛋白 (SP) -B 缺乏是致命儿童的非常罕见原因.
- RespiRare网络收集有关罕见呼吸道疾病的详细表型和基因型数据.
研究的目的:
- 在11名患者的队列中分析SP-B缺乏症的临床和基因型谱.
- 了解SP-B变体与儿童疾病严重程度和结果之间的相关性.
- 为了确定影响SP-B缺陷婴儿生存的因素.
主要方法:
- 对11名SP-B缺乏症患者的回顾性分析.
- 收集和审查表型数据 (症状,发病年龄,存活率).
- 基因型分析以识别SP-B变体并评估其功能影响 (功能丧失与低形态).
主要成果:
- 由于出生时出现的严重功能丧失变体而导致完全SP-B缺乏症的患者,平均存活时间为1个月.
- 极为罕见的低形态SP-B变异病例显示部分保留了蛋白质功能并存活下来.
- 该研究强调了基于SP-B缺乏症的严重程度的各种结果.
结论:
- 完整的SP-B缺乏导致严重的,往往致命的新生儿呼吸衰竭.
- 低形SP-B变异可能会赋予较温和的表型,并允许在儿童中生存.
- 基因型-表型相关性对于理解和管理儿童SP-B缺乏症至关重要.
相关概念视频
Breathing
58.4K
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...
58.4K
Acute Respiratory Failure-II
174
Type I Respiratory Failure, or hypoxemic respiratory failure, occurs when the partial pressure of oxygen (PaO2) in arterial blood falls below 60 mmHg while breathing room air without a corresponding increase in arterial carbon dioxide levels (PaCO2). This condition highlights a significant impairment in the lungs' capacity to oxygenate the blood.
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
174
Pulmonary Cycle: Exhalation
1.4K
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...
1.4K
Acute Respiratory Failure-III
158
Hypercapnic respiratory failure, also known as Type 2 or ventilatory respiratory failure, is a severe condition characterized by the body's inability to effectively remove carbon dioxide (CO2) from the bloodstream. It leads to an arterial CO2 pressure (PaCO2) exceeding 45 mmHg and a blood pH above 7.35. This situation indicates that the body's ventilatory demand, or the ventilation needed to maintain normal PaCO2 levels, surpasses its supply or the maximum gas flow achievable without...
158
Acute Respiratory Failure-V
123
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...
123
Acute Respiratory Failure-I
167
Acute respiratory failure is a condition characterized by the inability of the lungs to perform their primary function: gas exchange. This failure leads to insufficient oxygen levels (hypoxemia) in the blood, elevated carbon dioxide levels (hypercapnia), or both, causing critical impairment in organ function.
Definition: It is defined by specific criteria based on blood gas measurements. Hypoxemia happens when the partial pressure of oxygen (PaO2) falls below 60 mmHg. At the same time,...
Definition: It is defined by specific criteria based on blood gas measurements. Hypoxemia happens when the partial pressure of oxygen (PaO2) falls below 60 mmHg. At the same time,...
167


