Abstract
The ethanol extract of dried flowers Osmanthus fragrans (OFE) was assessed for free radical scavenging effects measured by the bleaching of the 1,1-diphenyl-2-picryl-hydrazyl (DPPH) radical, scavenging of the hydroxyl anion, investigation of the ferric reducing/antioxidant power (FRAP) and lipid-peroxidation inhibition in rat tissues. OFE contained a high amount of total flavonoid and polyphenol. OFE presented the effects in the metal reducing power, FRAP assay with IC50 values of 0.23 μg/ml, and 7.74 μg/ml, respectively. OFE presented similar activities toward the DPPH and hydroxyl anion scavenging ability with IC50 values of 10 μg/ml. OFE with IC50 values between 46 and 97 μg/ml inhibited lipid peroxidation initiated by ferrous chloride in rat brain, liver, heart and kidney mitochodrias. Moreover, the neuroprotective activity of OFE was investigated under different insults (glutamate, arachidonic acid, and 6-hydroxydopamine) in Wistar rat primary cortical neurons. OFE with EC50 values between 66 and 165 μg/ml attenuated the neurotoxicity on MTT and LDH assays. In addition, the AKT protein expression of excitotoxicity and oxidative stress was displayed by western blotting analysis. OFE could up-regulate the glutamate and 6-OHDA decreased AKT expression. This is the first demonstration of the neuroprotective, free radical scavenging and anti-oxidative effects of O. fragrans.
| Original language | English |
|---|---|
| Pages (from-to) | 819-827 |
| Number of pages | 9 |
| Journal | Journal of Biomedical Science |
| Volume | 14 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Nov 2007 |
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Keywords
- Free radical scavenging
- Neuroprotection
- Osmanthus fragrans
- Oxidative stress
- Primary cortical neuron
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
Cite this
Neuroprotection and free radical scavenging effects of Osmanthus fragrans. / Lee, Hsin Hsueh; Lin, Chi Ting; Yang, Ling Ling.
In: Journal of Biomedical Science, Vol. 14, No. 6, 11.2007, p. 819-827.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Neuroprotection and free radical scavenging effects of Osmanthus fragrans
AU - Lee, Hsin Hsueh
AU - Lin, Chi Ting
AU - Yang, Ling Ling
PY - 2007/11
Y1 - 2007/11
N2 - The ethanol extract of dried flowers Osmanthus fragrans (OFE) was assessed for free radical scavenging effects measured by the bleaching of the 1,1-diphenyl-2-picryl-hydrazyl (DPPH) radical, scavenging of the hydroxyl anion, investigation of the ferric reducing/antioxidant power (FRAP) and lipid-peroxidation inhibition in rat tissues. OFE contained a high amount of total flavonoid and polyphenol. OFE presented the effects in the metal reducing power, FRAP assay with IC50 values of 0.23 μg/ml, and 7.74 μg/ml, respectively. OFE presented similar activities toward the DPPH and hydroxyl anion scavenging ability with IC50 values of 10 μg/ml. OFE with IC50 values between 46 and 97 μg/ml inhibited lipid peroxidation initiated by ferrous chloride in rat brain, liver, heart and kidney mitochodrias. Moreover, the neuroprotective activity of OFE was investigated under different insults (glutamate, arachidonic acid, and 6-hydroxydopamine) in Wistar rat primary cortical neurons. OFE with EC50 values between 66 and 165 μg/ml attenuated the neurotoxicity on MTT and LDH assays. In addition, the AKT protein expression of excitotoxicity and oxidative stress was displayed by western blotting analysis. OFE could up-regulate the glutamate and 6-OHDA decreased AKT expression. This is the first demonstration of the neuroprotective, free radical scavenging and anti-oxidative effects of O. fragrans.
AB - The ethanol extract of dried flowers Osmanthus fragrans (OFE) was assessed for free radical scavenging effects measured by the bleaching of the 1,1-diphenyl-2-picryl-hydrazyl (DPPH) radical, scavenging of the hydroxyl anion, investigation of the ferric reducing/antioxidant power (FRAP) and lipid-peroxidation inhibition in rat tissues. OFE contained a high amount of total flavonoid and polyphenol. OFE presented the effects in the metal reducing power, FRAP assay with IC50 values of 0.23 μg/ml, and 7.74 μg/ml, respectively. OFE presented similar activities toward the DPPH and hydroxyl anion scavenging ability with IC50 values of 10 μg/ml. OFE with IC50 values between 46 and 97 μg/ml inhibited lipid peroxidation initiated by ferrous chloride in rat brain, liver, heart and kidney mitochodrias. Moreover, the neuroprotective activity of OFE was investigated under different insults (glutamate, arachidonic acid, and 6-hydroxydopamine) in Wistar rat primary cortical neurons. OFE with EC50 values between 66 and 165 μg/ml attenuated the neurotoxicity on MTT and LDH assays. In addition, the AKT protein expression of excitotoxicity and oxidative stress was displayed by western blotting analysis. OFE could up-regulate the glutamate and 6-OHDA decreased AKT expression. This is the first demonstration of the neuroprotective, free radical scavenging and anti-oxidative effects of O. fragrans.
KW - Free radical scavenging
KW - Neuroprotection
KW - Osmanthus fragrans
KW - Oxidative stress
KW - Primary cortical neuron
UR - http://www.scopus.com/inward/record.url?scp=35348834737&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=35348834737&partnerID=8YFLogxK
U2 - 10.1007/s11373-007-9179-x
DO - 10.1007/s11373-007-9179-x
M3 - Article
VL - 14
SP - 819
EP - 827
JO - Journal of Biomedical Science
JF - Journal of Biomedical Science
SN - 1021-7770
IS - 6
ER -