在波罗的海重复的"开放电路"潜水后的氧气炎症
Andrea Brizzolari1, Simona Mrakic-Sposta2, Alessandra Vezzoli1,2
1Department of Biomedical Sciences, University of Padova, Padova, Italy.
概括
在冷水中重复的潜水会逐渐增加潜水者的氧化应激标志物和炎症. 身体的抗氧化防御只是部分有效,突显了重复高压暴露的潜在风险.
科学领域:
- 环境医学 环境医学
- 生理学 生理学 生理学
背景情况:
- 潜水会使个人暴露在高压条件下,可能导致氧化应激和炎症.
- 了解重复潜水的生理影响,特别是在冷水中,对于潜水员的安全至关重要.
研究的目的:
- 研究经验丰富的潜水员进行重复的冷水潜水时氧化应激和炎症标志物的渐进变化.
- 在一系列的潜水中评估身体的抗氧化反应和炎症状态.
主要方法:
- 九名专家潜水员在波罗的海进行了五次重复潜水.
- 尿液和唾液样本是在潜水前和潜水后在五次潜水会议中收集的.
- 分析的标记物包括反应性氧物种 (ROS),总抗氧化能力 (TAC),脂质过氧化,DNA损伤和IL-6.
主要成果:
- 从第四次潜水开始,观察到潜水前ROS,脂质过氧化和DNA损伤的显著增加.
- 潜水后的ROS,脂质过氧化和DNA损伤也在重复潜水时显著增加.
- 总抗氧化能力下降,而IL-6水平显著增加,表明炎症加剧.
结论:
- 重复的冷水潜水会导致氧化应激和炎症标志物逐渐增加.
- 内生抗氧化剂防御不足以完全抵消诱导的氧化应激.
- 升高的IL-6表明潜水诱导的体力疲劳和持续的氧炎症的结合.
相关概念视频
Oxygen Delivering System II: Venturi Mask and Transtracheal Oxygen
1.8K
Oxygen therapy is a pivotal aspect of medical care, particularly for patients with respiratory ailments. Two prominent oxygen-delivering systems include the Venturi mask and the transtracheal oxygen catheter.
Venturi Mask
The Venturi mask, named after the Venturi effect, is designed to deliver precise oxygen concentrations. It consists of a large tube with an oxygen inlet that narrows down, causing a pressure drop that pulls air in through adjustable side ports. The mask is a lightweight,...
Venturi Mask
The Venturi mask, named after the Venturi effect, is designed to deliver precise oxygen concentrations. It consists of a large tube with an oxygen inlet that narrows down, causing a pressure drop that pulls air in through adjustable side ports. The mask is a lightweight,...
1.8K
Special considerations while measuring oxygen saturation
884
Assessing respiratory rate concurrently with pulse measurement is fundamental to patient care, providing valuable insights into the patient's respiratory function. The normal breathing rate for an adult usually falls within a normal range of 12 to 20 breaths per minute. Abnormal respiratory rates can signal underlying health conditions or the need for immediate intervention.
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is...
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is...
884
Oxygen Requirements and Growth Patterns
1.1K
Microorganisms exhibit diverse oxygen requirements and growth patterns driven by their metabolic strategies and environmental adaptations. Oxygen, while essential for many organisms, can also be toxic under certain conditions, shaping how microorganisms grow and survive.Oxygen Requirements of MicroorganismsMicroorganisms are classified based on their ability to use or tolerate oxygen:● Obligate aerobes like Mycobacterium tuberculosis need oxygen for energy production, as it serves as the...
1.1K
Pneumothorax-I
1.1K
A pneumothorax is a condition where air builds up in the space between the lung and the chest wall, causing the lung to collapse. This condition arises when air enters the space between the parietal and visceral pleura, disrupting the negative pressure essential for lung inflation. This can lead to a partial or complete collapse of the lung.
Pneumothorax can be even further classified as spontaneous, traumatic, and tension pneumothorax.
Pneumothorax can be even further classified as spontaneous, traumatic, and tension pneumothorax.
1.1K
Oxygen Transport in the Blood
5.9K
Hemoglobin (Hb) is a crucial molecule in the human body, consisting of four polypeptide chains, each bound to an iron-containing heme group. This unique structure enables hemoglobin to bind to oxygen, with each molecule capable of combining with four molecules of oxygen, leading to rapid and reversible oxygen loading. When fully loaded with oxygen, it is called oxyhemoglobin, while hemoglobin that has released oxygen is called reduced hemoglobin or deoxyhemoglobin. As hemoglobin binds oxygen,...
5.9K
Alterations in Respiration II
1.6K
There are numerous types of normal and abnormal respiration. Based on ventilatory movements, breathing patterns are classified as regular, deep, or shallow. Examples include Biot's breathing, Cheyne-Stokes respiration, Kussmaul's breathing, hyperventilation, and hypoventilation. Each pattern is clinically significant and aids in evaluating patients.
In Biot's breathing, the respiratory rate and depth are irregular, alternating between periods of deep gasping and apnea. Common causes...
In Biot's breathing, the respiratory rate and depth are irregular, alternating between periods of deep gasping and apnea. Common causes...
1.6K


