Unilateral implantation of dopamine-loaded biodegradable hydrogel in the striatum attenuates motor abnormalities in the 6-hydroxydopamine model of hemi-parkinsonism

作者：Senthilkumar Karuppagounder S; Saravanan Karuppagounder S; Chandra Goutam; Sindhu Kizhakke M; Jayakrishnan A; Mohanakumar Kochupurackal P^*

来源：Behavioural Brain Research, 2007, 184(1): 11-18.

DOI：10.1016/j.bbr.2007.06.025

• Parkinson's disease
• 6-hydroxydopamine
• dextran dialdehyde cross-linked gelatin hydrogel
• controlled release
• dopamine
• rotational behavior
• striatal implantation
• apomorphine

Dopaminergic functional recovery following controlled release of dopamine from biodegradable polymer matrices implanted in the lesioned striaturn was investigated in a hemiparkinsonian animal model. Significant dopamine depletion in the striatum ipsilateral to the side of infusion was observed in animals unilaterally infused with 6-hydroxydopamine (6-OHDA) in the substatia nigra. These animals displayed apomorphine-induced contralateral rotational behavior, when examined on the 16th day. Implantation of a controlled release delivery system (hydrogel obtained by mixing dextran dialdehyde cross-linked with gelatin) containing dopamine in the denervated striaturn on the 1st day or the 18th day significantly abolished the apomorphine-induced contralateral rotational behavior in these animals. The recovery was visible for about 17 days, thereafter the behavioral bias reappeared. The present results indicate that dopamine released from the polymer matrices alleviates behavioral bias in experimental parkinsonism, implying use of such technologies as an alternative method for the treatment of Parkinson's disease. This approach is useful in reducing the oral dose of drugs that are with severe systemic effects, and that develop tolerance.

• 出版日期2007-11-22
• 单位河北医科大学