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Vinpocetine regulates levels of circulating TLRs in Parkinson's disease patients.
Neurological Sciences 2018 October 13
BACKGROUND: The pathogenesis of Parkinson's disease (PD) is complex; it includes mitochondrial dysfunction, oxidative stress, and neuroinflammation. Notably, Toll-like receptors (TLRs) may activate inflammatory or anti-inflammatory responses in Parkinson's disease. Vinpocetine has been tested as an anti-inflammatory in both animal and in vitro research. Thus, it is important to test whether the anti-inflammatory properties of vinpocetine may have a protective effect in PD patients.
METHODS: Eighty-nine Parkinson's disease patients and 42 healthy controls were recruited for this study. All patients were randomly assigned to either the traditional therapy group (T PD group, n = 46) or the vinpocetine group (V PD group, n = 43), in a blinded manner. Both treatments were administered for 14 days.
RESULTS: Administration of vinpocetine reduced mRNA levels of TLR2/4, as well as protein levels of the downstream signalling molecules, MyD88 and NF-κB; moreover, it lowered the expression levels of serum inflammatory cytokines, TNF-α and MCP-1. Notably, vinpocetine increased TLR3 mRNA levels, as well as protein levels of the downstream signalling molecules TRIF-β and IRF-3, and serum levels of the anti-inflammatory cytokines IL-10 and IL-8. Furthermore, vinpocetine produced a robust increase in the Mini Mental State Examination score, compared to that achieved by using levodopa therapy.
CONCLUSION: Vinpocetine treatment may exhibit anti-inflammatory activity and alleviate cognitive impairment.
METHODS: Eighty-nine Parkinson's disease patients and 42 healthy controls were recruited for this study. All patients were randomly assigned to either the traditional therapy group (T PD group, n = 46) or the vinpocetine group (V PD group, n = 43), in a blinded manner. Both treatments were administered for 14 days.
RESULTS: Administration of vinpocetine reduced mRNA levels of TLR2/4, as well as protein levels of the downstream signalling molecules, MyD88 and NF-κB; moreover, it lowered the expression levels of serum inflammatory cytokines, TNF-α and MCP-1. Notably, vinpocetine increased TLR3 mRNA levels, as well as protein levels of the downstream signalling molecules TRIF-β and IRF-3, and serum levels of the anti-inflammatory cytokines IL-10 and IL-8. Furthermore, vinpocetine produced a robust increase in the Mini Mental State Examination score, compared to that achieved by using levodopa therapy.
CONCLUSION: Vinpocetine treatment may exhibit anti-inflammatory activity and alleviate cognitive impairment.
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