Coadministration of hydroxysafflor yellow A with levodopa attenuates the dyskinesia.

Abstract

Levodopa (L-DOPA) is used as the most effective drug available for the symptomatic treatment of Parkinson's disease (PD). However, long-term treatment of L-DOPA frequently causes complications, including abnormal involuntary movements such as dyskinesia and response fluctuations in PD patients. In the present work, we investigated whether hydroxysafflor yellow A (HSYA) ameliorates L-DOPA-induced dyskinesia and motor fluctuations in the 6-hydroxydopamine-lesioned rat model of PD. Valid PD rats were treated daily with vehicle, HSYA alone, L-DOPA, or a combination of HSYA plus L-DOPA for 21days, respectively. L-DOPA (8mg/kg) and benserazide (15mg/kg) were treated intraperitoneally. HSYA was administrated intraperitoneally at a dose of 10mg/kg. The abnormal involuntary movements and rotational behavior were evaluated. The expression of the dopamine D3 receptor in the striatum was also assayed. The results demonstrated that daily administration of L-DOPA to PD rats for 21days induced a steady expression of dyskinesia. Coadministration of HSYA with L-DOPA significantly ameliorated L-DOPA-induced dyskinesia. The combination treatment also prevented the shortening of the motor response duration that defines wearing off motor fluctuations. HSYA also inhibited the increase of expression of the dopamine D3 receptor in the striatum. These findings demonstrated that HSYA provided anti-dyskinetic relief against L-DOPA in a preclinical model of PD via regulating the expression of the dopamine D3 receptor. The combination of L-DOPA and HSYA also reduced the likelihood of wearing off development, and may thus support the utility of such compounds for the improved treatment of PD.

• Authors: Tian Wang, Si-jin Duan, Shu-yun Wang, Yan Lu, Qing Zhu, Li-jie Wang, Bing Han
• Journal: Physiology & behavior (Physiol Behav) Vol. 147 Pg. 193-7 (Aug 01 2015) ISSN: 1873-507X [Electronic] United States
• PMID: 25914172 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2015 Elsevier Inc. All rights reserved.

Chemical References

• Adrenergic Agents
• Antiparkinson Agents
• Quinones
• Receptors, Dopamine D3
• hydroxysafflor yellow A
• Levodopa
• Chalcone
• Oxidopamine
• Apomorphine

Topics

• Adrenergic Agents (toxicity)
• Analysis of Variance
• Animals
• Antiparkinson Agents (adverse effects)
• Apomorphine (pharmacology)
• Chalcone (analogs & derivatives, therapeutic use)
• Disease Models, Animal
• Levodopa (adverse effects)
• Male
• Motor Activity (drug effects)
• Olfaction Disorders (chemically induced, drug therapy)
• Oxidopamine (toxicity)
• Parkinson Disease (drug therapy, etiology)
• Quinones (therapeutic use)
• Rats
• Receptors, Dopamine D3 (metabolism)
• Time Factors