Lipoxygenase activity in altered gravity

Mauro Maccarrone, Natalia Battista, Monica Bari, Alessandro Finazzi-Agrò

Research output: Chapter in Book/Report/Conference proceedingChapter


Lipoxygenases are a family of enzymes which dioxygenate unsaturated fatty acids, thus initiating lipoperoxidation of membranes or the synthesis of signalling molecules, or inducing structural and metabolic changes in the cell. This activity is the basis for the critical role of lipoxygenases in a number of pathophysiological conditions, both in animals and plants. We review the effects of microgravity on the catalytic efficiency of purified soybean (Glycine max) lipoxygenase-1, as well as the modulation of the activity and expression of 5-lipoxygenase in human erythroleukemia K562 cells subjected to altered gravity. We also outline the molecular properties of the lipoxygenase family and discuss its possible involvement in space-related processes, such as apoptosis (programmed cell death) and immunodepression. Finally, we discuss the modulation of cyclooxygenase activity and expression in K562 cells exposed to altered gravity, because cyclooxygenase catalyzes the oxidation of arachidonate through a pathway different from that catalyzed by lipoxygenase activity.

Original languageEnglish
Title of host publicationAdvances in Space Biology and Medicine
Number of pages17
Publication statusPublished - 2002

Publication series

NameAdvances in Space Biology and Medicine
ISSN (Print)15692574

ASJC Scopus subject areas

  • Physiology


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