Ya-Ping Yang

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ETHNOPHARMACOLOGICAL RELEVANCE Paeoniflorin (PF) is the principal bioactive component of Radix Paeoniae alba, which is widely used in Traditional Chinese Medicine for the treatment of neurodegenerative disorders such as Parkinson's disease (PD). AIM OF THE STUDY To evaluate the neuroprotective effects of PF on MPP(+)- or acid- (pH 5.0) induced injury in(More)
Autophagy is a major cellular pathway for the degradation of long-lived proteins and cytoplasmic organelles in eukaryotic cells. A large number of intracellular/extracellular stimuli, including amino acid starvation and invasion of microorganisms, are able to induce the autophagic response in cells. The discovery of the ATG genes in yeast has greatly(More)
The genetic polymorphisms in E-cadherin gene (CDH1) may affect invasive/metastatic development of gastric cancer by altering gene transcriptional activity of epithelial cell. Our study aims to explore the associations among CDH1 gene polymorphisms, and predisposition of gastric cancer. We genotyped four potentially functional polymorphisms (rs13689,(More)
Nitric-oxide synthases (NOS) are catalytically self-sufficient flavo-heme enzymes that generate NO from arginine (Arg) and display a novel utilization of their tetrahydrobiopterin (H(4)B) cofactor. During Arg hydroxylation, H(4)B acts as a one-electron donor and is then presumed to redox cycle (i.e. be reduced back to H(4)B) within NOS before further(More)
Comparative mapping data on evolutionary conserved coding sequences and synteny maps between human and cattle are insufficient to define the extent and distribution of conserved segments between these two species, because the order of loci is often rearranged. A 5000-rad cattle whole-genome radiation hybrid (WG-RH) panel was constructed to provide(More)
Oxidized low-density lipoprotein (ox-LDL) is involved in the pathogenesis of atherosclerosis and atherosclerotic plaque rupture by promoting lipid accumulation, proinflammatory responses, and cell death. LDL is mainly oxidized in the subendothelial layer of the vascular wall and then can be taken up by vascular endothelial cells. However, little is known(More)
The aim of the present study was to explore the neuroprotective effects and mechanisms of action of dl-3-n-butylphthalide (NBP) in a 1-methyl-4-phenylpyridiniumion (MPP(+))-induced cellular model of Parkinson's disease (PD). NBP was extracted from seeds of Apium graveolens Linn. (Chinese celery). MPP(+) treatment of PC12 cells caused reduced viability,(More)
AIM A growing body of evidence suggests that α-synuclein accumulation may play an important role in the pathogenesis of Parkinson's disease. The aim of this study was to investigate the roles of the proteasome and autophagy pathways in the clearance of wild-type and mutant α-synuclein in PC12 cells. METHODS PC12 cells overexpressing either wild-type or(More)
Advanced glycation end-products (AGEs) contribute to the pathogenesis of diabetes mellitus and atherosclerosis by promoting vascular endothelial cell proliferation, migration, damage and death. In this study, we examined the role of autophagy in HUVECs exposed to AGE-modified bovine serum albumin (AGE-BSA). HUVECs incubated with AGE-BSA for 6 h showed an(More)
The genetic background and the pathogenesis of familial Parkinson's disease (PD) have not been fully elucidated. Two missense mutations in the alpha-synuclein gene, A30P and A53T, have been linked to familial PD. Increasing evidence suggests the involvement of alpha-synuclein, the dopamine transporter (DAT), and neurotoxins in the pathogenesis of PD, but(More)