History
Until the 1980s, nitric oxide, a product of fossil fuel combustion, was thought only to play a role the detrimental effects of air pollution on the respiratory tract. In 1987, experiments with coronary arteries showed that nitric oxide was the long sought endothelium-derived relaxing factor. After scientists realised that NO played a biological role, its role as a cell signalling molecule and neurotransmitter became clear from abundant studies.
NO was first detected in exhaled breath samples in 1991. In 1992, NO was voted molecule of the year by the scientific journal Science. In 1993, researchers from the Karolinska Institute in Sweden were the first to report increased eNO in asthmatics.
Today, NO is not only used in breath tests but also as a therapeutic agent for conditions such as pulmonary arterial hypertension and possibly for the acute respiratory distress syndrome.
Read more about this topic: Exhaled Nitric Oxide
Famous quotes containing the word history:
“Racism is an ism to which everyone in the world today is exposed; for or against, we must take sides. And the history of the future will differ according to the decision which we make.”
—Ruth Benedict (1887–1948)
“A people without history
Is not redeemed from time, for history is a pattern
Of timeless moments.”
—T.S. (Thomas Stearns)
“In history as in human life, regret does not bring back a lost moment and a thousand years will not recover something lost in a single hour.”
—Stefan Zweig (18811942)