TY  - JOUR
A1  - Hagl, Stephanie
A1  - Berressem, Dirk
A1  - Bruns, Bastian
A1  - Sus, Nadine
A1  - Frank, Jan
A1  - Eckert, Gunter P.
T1  - Beneficial effects of ethanolic and hexanic rice bran extract on mitochondrial function in PC12 cells and the search for bioactive components
T2  - Molecules
N2  - Mitochondria are involved in the aging processes that ultimately lead to neurodegeneration and the development of Alzheimer’s disease (AD). A healthy lifestyle, including a diet rich in antioxidants and polyphenols, represents one strategy to protect the brain and to prevent neurodegeneration. We recently reported that a stabilized hexanic rice bran extract (RBE) rich in vitamin E and polyphenols (but unsuitable for human consumption) has beneficial effects on mitochondrial function in vitro and in vivo (doi:10.1016/j.phrs.2013.06.008, 10.3233/JAD-132084). To enable the use of RBE as food additive, a stabilized ethanolic extract has been produced. Here, we compare the vitamin E profiles of both extracts and their effects on mitochondrial function (ATP concentrations, mitochondrial membrane potential, mitochondrial respiration and mitochondrial biogenesis) in PC12 cells. We found that vitamin E contents and the effects of both RBE on mitochondrial function were similar. Furthermore, we aimed to identify components responsible for the mitochondria-protective effects of RBE, but could not achieve a conclusive result. α-Tocotrienol and possibly also γ-tocotrienol, α-tocopherol and δ-tocopherol might be involved, but hitherto unknown components of RBE or a synergistic effect of various components might also play a role in mediating RBE’s beneficial effects on mitochondrial function.
KW  - mitochondria
KW  - rice bran extract
KW  - vitamin E
KW  - tocopherol
KW  - tocotrienol
KW  - PC12 cells
KW  - aging
KW  - prevention
KW  - neurodegeneration
Y1  - 2015
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/50733
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-507335
SN  - 1420-3049
N1  - This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
VL  - 20
IS  - 9
SP  - 16524
EP  - 16539
PB  - MDPI
CY  - Basel
ER  -