Enzyme And Vitamin Define The Yin And Yang Of Asthma

The allergen breathed in by a person with asthma triggers a proteinase or enzyme called MMP7 that activates a cascade of events to prompt an allergic reaction. In particular, MMP7 activates interleukin 25, a key mediator of the allergic response in the lung. Researchers have identified a form of vitamin A made in the lung that is critical for dampening the inflammatory effect.

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