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Determination of plasma protein binding rate of five components in Eucommia ulmoides extract / 中国药理学通报
Chinese Pharmacological Bulletin ; (12): 131-135, 2015.
Article in Zh | WPRIM | ID: wpr-462504
Responsible library: WPRO
ABSTRACT
Aim To determine the plasma protein binding rate of five components of Eucommia ulmoides extract. Methods The equilibrium dialysis method was used to study the plasma protein binding rate. The plasma samples were extracted by protein precipitation with methanol. With the use of puerarin as the internal standard, UPLC-MS/MS was carried out to determine the concentration of the five compounds in and out of the dialysis membrane. Results The average plasma protein binding rates of five compounds on the area of the concentration which was determinate were as fol-lows, respectively geniposidic acid was ( 25. 77 ± 2. 68 )%, protocatechuic acid was ( 57. 54 ± 3. 79)%, chlorogenic acid was (53. 91 ± 3. 00)%, pinoresinol diglucoside was (24. 15 ± 4. 92)%, and pinoresinol singleglucoside was (49. 78 ± 3. 61)%. Conclusions The results show that the binding percentage of geniposidic acid and pinoresinol diglucoside is relatively low, but the binding rate of the others with rat plasma protein is moderate.
Key words
Full text: 1 Index: WPRIM Language: Zh Journal: Chinese Pharmacological Bulletin Year: 2015 Type: Article
Full text: 1 Index: WPRIM Language: Zh Journal: Chinese Pharmacological Bulletin Year: 2015 Type: Article