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| 1 | Arbutin effectively ameliorates the symptoms of Parkinson’s disease:the role of adenosine receptors and cyclic adenosine monophosphate显示文摘An antagonistic communication exists between adenosinergic and dopaminergic signaling in the basal ganglia,which suggests that the suppression of adenosine A2A receptors-cyclic adenosine monophosphate pathway may be able to restore the disrupted dopamine transmission that results in motor symptoms in Parkinson’s disease(PD).Arbutin is a natural glycoside that possesses antioxidant,antiinflammatory,and neuroprotective properties.The purpose of this study was to investigate whether arbutin could ameliorate the symptoms of PD and to examine the underlying mechanism.In this study,Swiss albino mouse models of PD were established by the intraperitoneal injection of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine for 4 successive days,with the concurrent intraperitoneal administration of arbutin(50 and 100 mg/kg)for 7 days.The results showed that arbutin significantly reduced lipid peroxidation,total nitrite levels,and inflammation in the substantia nigra and striatum of PD mouse models.In addition,arbutin decreased the activity of endogenous antioxidants,reduced the levels of dopamine,3,4-dihydroxyphenylacetic acid,homovanillic acid,andγ-aminobutyric acid,and minimized neurodegeneration in the striatum.Arbutin also reduced the abnormal performance of PD mouse models in the open field test,bar test,pole test,and rotarod test.The therapeutic efficacy of arbutin was similar to that of madopar.The intraperitoneal injection of the A2AR agonist CGS21680(0.5 mg/kg)attenuated the therapeutic effects of arbutin,whereas the intraperitoneal injection of forskolin(3 mg/kg)enhanced arbutin-mediated improvements.These findings suggest that arbutin can improve the performance of PD mouse models by inhibiting the function of the A2AR and enhancing the effects of cyclic adenosine monophosphate.This study was approved by the Institutional Animal Ethics Committee(1616/PO/Re/S/12/CPCSEA)on November 17,2019(approval No.IAEC/2019/010). | Jie Zhao Manish Kumar Jeevan Sharma Zhihai Yuan | 2021 | Neural Regeneration Research2021，16，10： | 2 |
| 2 | Mutations in GBA,SNCA,and VPS35 are not associated with Alzheimer's disease in a Chinese population:a case-control study显示文摘SNCA,GBA,and VPS35 are three common genes associated with Parkinson's disease.Previous studies have shown that these three genes may be associated with Alzheimer's disease(AD).However,it is unclear whether these genes increase the risk of AD in Chinese populations.In this study,we used a targeted gene sequencing panel to screen all the exon regions and the nearby sequences of GBA,SNCA,and VPS35 in a cohort including 721 AD patients and 365 healthy controls from China.The results revealed that neither common variants nor rare variants of these three genes were associated with AD in a Chinese population.These findings suggest that the mutations in GBA,SNCA,and VPS35 are not likely to play an important role in the genetic susceptibility to AD in Chinese populations.The study was approved by the Ethics Committee of Xiangya Hospital,Central South University,China on March 9,2016(approval No.201603198). | Ya-Fei Wen Xue-Wen Xiao Lu Zhou Ya-Ling Jiang Yuan Zhu Li-Na Guo Xin Wang Hui Liu Ya-Fang Zhou Jun-Ling Wang Xin-Xin Liao Lu Shen Bin Jiao | 2022 | Neural Regeneration Research2022，17，3： | 0 |
| 3 | Relationship among Parkinson’s disease, constipation, microbes, and microbiological therapy显示文摘This comprehensive review elucidates the complex interplay between gut microbiota and constipation in Parkinson’s disease(PD),a prevalent non-motor symptom contributing significantly to patients’morbidity.A marked alteration in the gut microbiota,predominantly an increase in the abundance of Proteobacteria and Bacteroidetes,is observed in PD-related constipation.Conventional treatments,although safe,have failed to effectively alleviate symptoms,thereby necessitating the development of novel therapeutic strategies.Microbiological interventions such as prebiotics,probiotics,and fecal microbiota transplantation(FMT)hold therapeutic potential.While prebiotics improve bowel movements,probiotics are effective in enhancing stool consistency and alleviating abdominal discomfort.FMT shows potential for significantly alleviating constipation symptoms by restoring gut microbiota balance in patients with PD.Despite promising developments,the causal relationship between changes in gut microbiota and PD-related constipation remains elusive,highlighting the need for further research in this expanding field. | Xin-Yang Yuan Yu-Sen Chen Zhou Liu | 2024 | World Journal of Gastroenterology2024，30，3： | 0 |
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