title: The uptake and transport behavior of berberine in Coptidis Rhizoma extract through rat primary cultured cortical neurons.
abstract: The objective of this study was to investigate whether berberine in Coptidis Rhizoma extract could be transported in primary cultured cerebral neurons and to study the uptake and transport behavior of berberine through the neurons. The present results showed that the uptake of berberine by the neurons increased linearly with increasing concentration of berberine in Coptidis Rhizoma extract over the range of 0.3822-38.22 microg/mL. Berberine could be transported into the neurons in a concentration-dependent and time-dependent manner when the neurons were fed with the incubation medium containing Coptidis Rhizoma extract. There was a positive correlation between the concentration of berberine in the medium and in the cell, which means that uptake of berberine increased in the cell along with higher dose of the extract. But there was a negative correlation tendency between the concentration of berberine in the medium and the penetration ratio. It is suggested that berberine in Coptidis Rhizoma extract was transported into the neurons at a variable rate.
authors.affiliation: Laboratory of Pharmaceutical Sciences, Department of Biological Sciences and Biotechnology, Tsinghua University, Beijing 100084, China.
authors.forename: Xueli
authors.initials: X
authors.lastname: Wang
authors.forename: Dongming
authors.initials: D
authors.lastname: Xing
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.forename: Fan
authors.initials: F
authors.lastname: Lei
authors.forename: Hui
authors.initials: H
authors.lastname: Su
authors.forename: Lijun
authors.initials: L
authors.lastname: Du
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D001599:Berberine / Q000737:chemistry / Q000378:metabolism*; D001692:Biological Transport / Q000187:drug effects; D002478:Cells, Cultured; D002540:Cerebral Cortex / Q000166:cytology*; D002845:Chromatography / Q000379:methods; D000089042:Coptis chinensis; D004305:Dose-Response Relationship, Drug; D004365:Drugs, Chinese Herbal / Q000494:pharmacology*; D009474:Neurons / Q000187:drug effects* / Q000378:metabolism; D051381:Rats; D013997:Time Factors
chemical_list: D004365:Drugs, Chinese Herbal; D001599:Berberine; C107393:Coptidis rhizoma extract