The denitrogenation by breathing oxygen-rich gas to prevent altitude decompression sickness.

Objective: While the technology of the molecular sieve oxygen generation system(MSOGS) onboard was used, pilots could not breathe pure oxygen to eliminate nitrogen during a high altitude flight. There is no report whether it is a threat to altitude decompression sickness(ADS) or not in that condition. This experiment was intended to observe the effects of breathing different oxygen-rich gases of MSOGS on denitrogenation, so that we could make the medical physiological requirements for MSOGS on-board and provide experimental basis for aeromedical supply.

Interferon-alpha enhances excitatory transmission in substantia gelatinosa neurons of rat spinal cord.

Objective: It has been shown that interferon-α (IFN-α) is synthesized and secreted by macrophages, monocytes, T lymphocytes, glial cells and neurons. IFN-α has been shown to have an antinociceptive effect at the supraspinal level in the nerve system. However, it is unclear how IFN-α is involved in the modulation of nociceptive transmission in the spinal cord.