Curcumin (diferuloylmethane) is an orange-yellow secondary metabolic compound from the rhizome of turmeric (Curcuma longa L.), a spice often found in curry powder. It is one of the major curcuminoids of turmeric. For centuries, curcumin has been used in some medicinal preparations or as a food colouring agent. A variety of enzymes that are closely associated with inflammation and cancer were found to be modulated by curcumin. This paper summarized the results of the inhibitory effect of curcumin and a Curcuma longa L. ethanolic extract on lipoxygenase from the rat lung cytosolic fraction. The positional specificity determination of arachidonic acid dioxygenation by RP- and SP-HPLC methods showed that in a purified enzyme preparation from the rat lung cytosol the specific form of lipoxygenase (LOX) is present exhibiting 12/15-LOX dual specificity (with predominant 15-LOX activity). The inhibitory activity of curcumin and Curcuma longa extract on LOX from cytosolic fraction of rat lung was expressed in the percentage of inhibition and as IC50. Lineweaver-Burk plot analysis has indicated that curcumin is the competitive inhibitor of 12/15 LOX from the rat lung cytosolic fraction.
- MeSH
- Arachidonate 12-Lipoxygenase drug effects MeSH
- Arachidonate 15-Lipoxygenase drug effects MeSH
- Curcuma chemistry MeSH
- Rats MeSH
- Curcumin isolation & purification pharmacology MeSH
- Arachidonic Acid chemistry MeSH
- Rhizome MeSH
- Rats, Wistar MeSH
- Animals MeSH
- Check Tag
- Rats MeSH
- Male MeSH
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- 12-15-lipoxygenase MeSH Browser
- Arachidonate 12-Lipoxygenase MeSH
- Arachidonate 15-Lipoxygenase MeSH
- Curcumin MeSH
- Arachidonic Acid MeSH
