Resting-state electroencephalogram relevance state recognition of Parkinson's disease based on dynamic weighted symbolic mutual information and k-means clustering / 生物医学工程学杂志

At present, the incidence of Parkinson's disease (PD) is gradually increasing. This seriously affects the quality of life of patients, and the burden of diagnosis and treatment is increasing. However, the disease is difficult to intervene in early stage as early monitoring means are limited. Aiming to find an effective biomarker of PD, this work extracted correlation between each pair of electroencephalogram (EEG) channels for each frequency band using weighted symbolic mutual information and k-means clustering. The results showed that State1 of Beta frequency band ( P = 0.034) and State5 of Gamma frequency band ( P = 0.010) could be used to differentiate health controls and off-medication Parkinson's disease patients. These findings indicated that there were significant differences in the resting channel-wise correlation states between PD patients and healthy subjects. However, no significant differences were found between PD-on and PD-off patients, and between PD-on patients and healthy controls. This may provide a clinical diagnosis reference for Parkinson's disease.

Research Progress in the Pharmacological Mechanism of Active Ingredients in Semen Ziziphi Spinosae / 中国药师

Semen Ziziphi spinosae ( SZS) , as a commonly used traditional Chinese medicine in clinic for insomnia therapy, is rich in pharmacological active ingredients such as saponins, flavonoids, alkaloids, oil and the other chemical compounds. The recent stud-ies indicated that some active ingredients in SZS exhibited a variety of activities including sedative hypnotics, antianxiety and anti-de-pression by regulating particular neurotransmitters such as 5-hydroxytryptamine (5-HT), gamma-amino butyric acid (GABA), norepi-nephrine, dopamine and glutamate. In accordance with the previous studies on pharmacological activities of SZS, this paper summa-rized and reviewed the applications of SZS in the treatment of central nervous system diseases, myocardial diseases and hepatic disea-ses, which might provide solid evidence for the application development of SZS.

Research Progress in Spice Composition-loaded Sustained and Controlled Release Preparations / 中国药师

The spices, with a wide range of remarkable pharmacological effects, were limited in developing clinical drugs because of their poor solubility, high irritation and low bioavailability. Controlled release preparations can delay the release of drugs on the basis of solubility enhancement to improve bioavailability. The research on spice ingredient-loaded controlled release preparations was sum-marized in the paper for the further development of spice active ingredients.

Development in New Dosage Forms of Active Components from Ginkgo Biloba Extracts / 中国药师

The main active components in Ginkgo biloba extracts were Ginkgo biloba flavonoids and lactone compounds. This pa-per reviewed on the kinds and pharmacological effects of the active ingredients in Ginkgo biloba extracts, and focused on four aspects including controlled-release preparations, solubilized solid preparations, nanoparticle formulations and time- and site-specific formula-tions to introduce the development in the new dosage forms of Ginkgo biloba flavonoids and lactone compounds.