Journal article

Publication year: 2015

Pages: 3-8

Journal: NFS journal

Volume number: 1

DOI Link: https://doi.org/10.1016/j.nfs.2015.03.002

Publisher: Elsevier

Abstract: 
Background

Curcuminoids (curcumin, demethoxycurcumin, bis-demethoxycurcumin) are lipophilic polyphenols thought to be effective in the prevention and treatment of neurodegenerative disorders, of which mitochondrial dysfunction is a prominent feature. In particular, older people may thus benefit from increasing their curcuminoid intake. However until now, it is not investigated if there exist age differences in the bioavailability of curcuminoids and therefore, it is unclear if curcumin doses have to be adjusted to age. Thus, we explored if the tissue concentrations and biological activities of curcuminoids are affected by age.

Methods

We investigated age-differences in the bioavailability and tissue distribution of curcuminoids and mitochondrial function in 3- and 18-months old mice fed a control diet or identical diets fortified with 500 or 2000 mg curcuminoids/kg for 3 weeks. Therefore, we measured curcuminoid concentrations in plasma, liver, kidney, and brain, basal and stress-induced levels of adenosine triphosphate (ATP) and mitochondrial membrane potential (MMP) in dissociated brain cells and citrate synthase activity of isolated mitochondria.

Results

Plasma but not liver and kidney curcuminoid concentrations were significantly higher in older mice. Age did not affect ATP concentrations and MMP in dissociated brain cells. After damaging cells with nitrosative stress, dissociated brain cells from old mice had a higher MMP than cells from young animals and were therefore more resistant. Furthermore, this effect was enhanced by curcumin.

Conclusion

Our data suggest that age may affect plasma concentrations, but not the tissue distribution of curcuminoids in mice, but has little impact on mitochondrial function in brain cells.

Harvard Citation style: Kocher, A., Hagl, S., Schiborr, C., Eckert, G. and Frank, J. (2015) Concentrations of total curcuminoids in plasma, but not liver and kidney, are higher in 18- than in 3-months old mice, NFS journal, 1, pp. 3-8. https://doi.org/10.1016/j.nfs.2015.03.002

APA Citation style: Kocher, A., Hagl, S., Schiborr, C., Eckert, G., & Frank, J. (2015). Concentrations of total curcuminoids in plasma, but not liver and kidney, are higher in 18- than in 3-months old mice. NFS journal. 1, 3-8. https://doi.org/10.1016/j.nfs.2015.03.002