Abstract
Parkinson’s disease (PD) is a progressive neurodegenerative disorder whose etiology is not understood. The 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-treated mouse model is widely used for studying PD. The present study was undertaken to investigate the effect of hydroxysafflor yellow A (HSYA) on MPTP-induced neurotoxicity in mice. Pretreatment with HSYA at a dose of 2, 8 mg/kg for a week was followed by intraperitoneal injection with MPTP (30 mg/kg) for five consecutive days. Next, the subsequent behavior, biochemical index and immunohistochemical manifestations in mice were determined. Behavioral testing showed that MPTP-treated mice exhibited motor deficits but HSYA at dose of 8 mg/kg prevented the appearance of motor abnormalities. Treatment with HSYA at dose of 8 mg/kg attenuated the reduction of dopamine (DA), 3,4-dihydroxyphenylacetic acid (DOPAC) and homovanillic acid (HVA) in striatum. It also showed that the activity of SOD, catalase activity and GSH levels were significantly higher, while the levels of malondialdehyde (MDA) and hydroxyl radicals was lower, in the HSYA-treated mice compared to the MPTP-treated mice. The MPTP-treated mice exhibited the loss of tyrosine hydroxylase-containing dopaminergic neurons in substantia nigra. However, HSYA-treated mice showed a protective effect. Our results indicated that HSYA possesses neuroprotective effects and is a promising anti-Parkinson’s disease drug which is worthy of further study.
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The authors thank Prof. Lon Clark for the English language revision.
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Han, B., Zhao, H. Effects of Hydroxysafflor Yellow A in the Attenuation of MPTP Neurotoxicity in Mice. Neurochem Res 35, 107–113 (2010). https://doi.org/10.1007/s11064-009-0035-4
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DOI: https://doi.org/10.1007/s11064-009-0035-4