Bioavailability of an R-α-Lipoic Acid/γ-Cyclodextrin Complex in Healthy Volunteers
AbstractR-α-lipoic acid (R-LA) is a cofactor of mitochondrial enzymes and a very strong antioxidant. R-LA is available as a functional food ingredient but is unstable against heat or acid. Stabilized R-LA was prepared through complexation with γ-cyclodextrin (CD), yielding R-LA/CD. R-LA/CD was orally administered to six healthy volunteers and showed higher plasma levels with an area under the plasma concentration-time curve that was 2.5 times higher than that after oral administration of non-complexed R-LA, although the time to reach the maximum plasma concentration and half-life did not differ. Furthermore, the plasma glucose level after a single oral administration of R-LA/CD or R-LA was not affected and no side effects were observed. These results indicate that R-LA/CD could be easily absorbed in the intestine. In conclusion, γ-CD complexation is a promising technology for delivering functional but unstable ingredients like R-LA. View Full-Text
Share & Cite This Article
Ikuta, N.; Okamoto, H.; Furune, T.; Uekaji, Y.; Terao, K.; Uchida, R.; Iwamoto, K.; Miyajima, A.; Hirota, T.; Sakamoto, N. Bioavailability of an R-α-Lipoic Acid/γ-Cyclodextrin Complex in Healthy Volunteers. Int. J. Mol. Sci. 2016, 17, 949.
Ikuta N, Okamoto H, Furune T, Uekaji Y, Terao K, Uchida R, Iwamoto K, Miyajima A, Hirota T, Sakamoto N. Bioavailability of an R-α-Lipoic Acid/γ-Cyclodextrin Complex in Healthy Volunteers. International Journal of Molecular Sciences. 2016; 17(6):949.Chicago/Turabian Style
Ikuta, Naoko; Okamoto, Hinako; Furune, Takahiro; Uekaji, Yukiko; Terao, Keiji; Uchida, Ryota; Iwamoto, Kosuke; Miyajima, Atsushi; Hirota, Takashi; Sakamoto, Norihiro. 2016. "Bioavailability of an R-α-Lipoic Acid/γ-Cyclodextrin Complex in Healthy Volunteers." Int. J. Mol. Sci. 17, no. 6: 949.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.