空降兵跳伞后血浆的生化变化:初步调查与分析

目的 探讨跳伞期间空降兵经历的生理和心理应激是否会改变空降兵血浆的生化指标。方法 调查了对照组（末跳伴组）和跳伴组空降兵血浆和血清中激素水平（皮质醇，生长激素，胰岛素，胰高血糖类、类皮素，血管紧素Ｉ和Ⅱ、醛固酮）、酶活性（超氧化物歧化酶、谷胱甘肽过氧化氢酶和谷胱甘肽硫转移酶）、自由基损伤指标水平（丙二醛）、肿瘤坏死因子α（ＴＮＦ－α）和主要热应激蛋白（ＨＳＰ７０）的差异性。结果 跳伴组血清中生长激

Biochemical Changes of Plasma in Paratroops after Parachuting:A Preliminary Investigation

Objective: To study whether physiological and psychological stresses during parachuting jumps may result in biochemical changes of plasma in parachutists. Method: Differences in the levels of hormones (cortisol, growth hormone, insulin, pancreatic glucagon, endothelin, angiotonin I and II, aldosterone), activities of enzymes (superoxide dismutase, glutathione peroxidase, glutathione S transferase), levels of the free radical damage indicator malondialdehyde (MDA), tumor necrosis factor alpha (TNF-alpha), and the main heat stress protein, HSP70, in the plasma and serum were investigated in control (non-parachuting) and parachuting paratroops. Result: Significantly higher levels of serum hormones such as growth hormone, insulin, angiotonin 1, renin activities, as well as MDA and plasma TNF-alpha and HSP70 were observed in the parachuting group. Conclusion: Whether these changes can potentially serve as useful biomarkers to assess possible abnormal stress in parachutists and to evaluate the health condition and to select parachutists remains to be further studied.