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The pharmacokinetics of PCBG and its major metabolite pinocembrin (PCB) in rats were investigated in this study. A sensitive and accurate UPLC-MS\/MS method was developed and validated for the simultaneous quantitative determination of PCBG and PCB in rat plasma after oral and intravenous administration of PCBG. After intravenous administration, PCBG was the main form in plasma. In contrast, after oral administration, the concentration of PCB was about 4-fold higher than that of PCBG, indicating that PCBG was metabolized to PCB. We also investigated the biotransformation of PCBG <jats:italic>in vitro<\/jats:italic> in order to understand whether the pH and the intestinal flora of gastrointestinal tract could affect the metabolism of PCBG. PCBG was incubated in rat plasma, liver homogenization, gastrointestial contents, liver microsomes (RLM) and hepatocytes <jats:italic>in vitro<\/jats:italic>. The data showed that PCB was quickly formed in the gastrointestinal incubation but PCBG was converted to PCB gradually in other incubations. The results indicated that the majority of PCBG was converted to its aglycone PCB in digestive system after oral administration, and PCB could be the active ingredient in the body.<\/jats:p>","DOI":"10.1038\/srep29340","type":"journal-article","created":{"date-parts":[[2016,7,5]],"date-time":"2016-07-05T09:10:11Z","timestamp":1467709811000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["In-vivo absorption of pinocembrin-7-O-\u03b2-D-glucoside in rats and its in-vitro biotransformation"],"prefix":"10.1038","volume":"6","author":[{"given":"Wei-Wei","family":"Guo","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Feng","family":"Qiu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiao-Qing","family":"Chen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yin-Ying","family":"Ba","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xing","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xia","family":"Wu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2016,7,5]]},"reference":[{"key":"BFsrep29340_CR1","unstructured":"Jiangsu New Medical College in Dictionary of medicinal plant. 1534 (Shanghai People\u2019s Publisher, 1977)."},{"key":"BFsrep29340_CR2","doi-asserted-by":"publisher","first-page":"1811","DOI":"10.1039\/c3fo60342c","volume":"4","author":"QH Zeng","year":"2013","unstructured":"Zeng, Q. 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