• Mol Pain · Jan 2021

    Review

    Cellular and synaptic mechanisms for Parkinson's disease-related chronic pain.

    • Jing-Shan Lu, Qi-Yu Chen, Xiang Chen, Xu-Hui Li, Zhaoxiang Zhou, Qin Liu, Yuwan Lin, Miaomiao Zhou, Ping-Yi Xu, and Min Zhuo.
    • Institute for Brain Research, Qingdao International Academician Park, Qingdao, China.
    • Mol Pain. 2021 Jan 1; 17: 1744806921999025.

    AbstractParkinson's disease is the second most common neurodegenerative disorder after Alzheimer's disease. Chronic pain is experienced by the vast majority of patients living with Parkinson's disease. The degeneration of dopaminergic neuron acts as the essential mechanism of Parkinson's disease in the midbrain dopaminergic pathway. The impairment of dopaminergic neurons leads to dysfunctions of the nociceptive system. Key cortical areas, such as the anterior cingulate cortex (ACC) and insular cortex (IC) that receive the dopaminergic projections are involved in pain transmission. Dopamine changes synaptic transmission via several pathway, for example the D2-adenly cyclase (AC)-cyclic AMP (cAMP)-protein kinase A (PKA) pathway and D1-G protein-coupled receptor kinase 2 (GRK2)-fragile X mental retardation protein (FMRP) pathway. The management of Parkinson's disease-related pain implicates maintenance of stable level of dopaminergic drugs and analgesics, however a more selective drug targeting at key molecules in Parkinson's disease-related pain remains to be investigated.

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