title: Neuroprotective effect of Rosmarinus officinalis extract on human dopaminergic cell line, SH-SY5Y.
abstract: Hydrogen peroxide (H2O2) is a major Reactive Oxygen Species (ROS), which has been implicated in many neurodegenerative conditions including Parkinson's disease (PD). Rosmarinus officinalis (R. officinalis) has been reported to have various pharmacological properties including anti-oxidant activity. In this study, we investigated the neuroprotective effects of R. officinalis extract on H2O2-induced apoptosis in human dopaminergic cells, SH-SY5Y. Our results showed that H2O2-induced cytotoxicity in SH-SY5Y cells was suppressed by treatment with R. officinalis. Moreover, R. officinalis was very effective in attenuating the disruption of mitochondrial membrane potential and apoptotic cell death induced by H2O2. R. officinalis extract effectively suppressed the up-regulation of Bax, Bak, Caspase-3 and -9, and down-regulation of Bcl-2. Pretreatment with R. officinalis significantly attenuated the down-regulation of tyrosine hydroxylase (TH), and aromatic amino acid decarboxylase (AADC) gene in SH-SY5Y cells. These findings indicate that R. officinalis is able to protect the neuronal cells against H2O2-induced injury and suggest that R. officinalis might potentially serve as an agent for prevention of several human neurodegenerative diseases caused by oxidative stress and apoptosis.
authors.affiliation: Department of Biotechnology, Chosun University, 375 Seosuk-dong, Dong-gu, Gwangju 501-759, Republic of Korea.
authors.forename: Se-Eun
authors.initials: SE
authors.lastname: Park
authors.forename: Seung
authors.initials: S
authors.lastname: Kim
authors.forename: Kumar
authors.initials: K
authors.lastname: Sapkota
authors.forename: Sung-Jun
authors.initials: SJ
authors.lastname: Kim
mesh_terms: D001142:Aromatic-L-Amino-Acid Decarboxylases / Q000378:metabolism; D002395:Catecholamines / Q000378:metabolism; D016923:Cell Death / Q000187:drug effects; D002460:Cell Line; D019610:Cytoprotection / Q000187:drug effects; D053938:DNA Fragmentation / Q000187:drug effects; D004298:Dopamine / Q000378:metabolism*; D006801:Humans; D006861:Hydrogen Peroxide / Q000494:pharmacology; D053078:Membrane Potential, Mitochondrial / Q000187:drug effects; D024101:Mitochondrial Proteins / Q000378:metabolism; D018696:Neuroprotective Agents / Q000494:pharmacology*; D010936:Plant Extracts / Q000494:pharmacology*; D027542:Rosmarinus / Q000737:chemistry*; D014446:Tyrosine 3-Monooxygenase / Q000378:metabolism; D051028:bcl-2-Associated X Protein / Q000378:metabolism
chemical_list: D002395:Catecholamines; D024101:Mitochondrial Proteins; D018696:Neuroprotective Agents; D010936:Plant Extracts; D051028:bcl-2-Associated X Protein; D006861:Hydrogen Peroxide; D014446:Tyrosine 3-Monooxygenase; D001142:Aromatic-L-Amino-Acid Decarboxylases; D004298:Dopamine