KMCRIC

허유진 교수 Eugene Huh (Assistant Professor)

가천대학교 한의과대학 방제학교실

Department of Formulae Pharmacology, College of Korean Medicine, Gachon University, Korea

email: eugenehuh@gachon.ac.kr

00:00:17 Q1. 자기 소개

00:00:53 Q2. 최신 연구 소개

00:17:11 Q3. 연구할 때 제일 보람있는 순간은?

00:19:29 Q4. 현재 소속 연구실 소개

00:20:33 Q5. 후배들에게 남기고 싶은 말

[Research Interests]

1. Herb-Drug interactions

2. Drug (Herbal medicine) delivery systems

3. Pathophysiology of neurodegenerative diseases

4. Role of Microbiota-Gut-Brain axis in the neurodegenerative disease

5. Omics approach in neurodegenerative diseases

[A representative study]

Huh E, Choi JG, Sim Y, Oh MS. An Integrative Approach to Treat Parkinson's Disease: Ukgansan Complements L-Dopa by Ameliorating Dopaminergic Neuronal Damage and L-Dopa-Induced Dyskinesia in Mice. Front Aging Neurosci. 2019 Jan 7;10:431. doi: 10.3389/fnagi.2018.00431.

[Abstract]

Parkinson's disease (PD) is accompanied by motor impairments due to the loss of dopaminergic neurons in the nigrostriatal pathway. Levodopa (L-dopa) has been the gold standard therapy for PD since the 1960s; however, its neurotoxic features accelerate PD progression through auto-oxidation or the induction of dyskinetic movements. Ukgansan (UGS) is a well-known prescription for treating PD in traditional medicines of East Asia, and its anti-PD function has been experimentally evaluated. The present study investigated whether UGS attenuates (1) motor dysfunction and dopaminergic neuronal damage when co-treated with L-dopa and (2) L-dopa-induced dyskinesia (LID) in 6-hydroxydopamine (6-OHDA)-induced PD mice. Although L-dopa was found to reduce motor dysfunctions, it failed to decrease the dopaminergic neuronal damage and increased the expression of dopamine receptor 1 (D1R) and 2 (D2R) in the 6-OHDA-injected mouse striatum. Co-treatment with UGS resulted in normal striatal histology and ameliorated motor impairments. In addition, UGS suppressed the dyskinesia induced by chronic L-dopa treatment while restoring the dopaminergic neurons in the striatum. For the underlying mechanism, UGS reduced the overexpression of D1R-related signaling proteins, such as phosphorylated extracellular signal-regulated kinase, ΔFosB, and c-fos in the striatum. Overall, the results suggest that the effect of UGS could be complementary to L-dopa by ameliorating motor dysfunction, restoring the dopaminergic neurons, and suppressing the dyskinetic movements in PD.

Keywords: 6-hydroxydopamine; Parkinson's disease; levodopa; levodopa-induced dyskinesia; ukgansan

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