Quantification of Arachidonic Acid and Its Metabolites in Rat Tissues by UHPLC-MS/MS: Application for the Identification of Potential Biomarkers of Benign Prostatic Hyperplasia

被引:13
作者
Bian, Qiaoxia [1 ]
Wang, Weihui [1 ]
Wang, Nannan [1 ]
Peng, Yan [1 ]
Ma, Wen [1 ]
Dai, Ronghua [1 ]
机构
[1] Shenyang Pharmaceut Univ, Sch Pharm, Shenyang 110016, Peoples R China
关键词
CHRONIC INFLAMMATION; BPH;
D O I
10.1371/journal.pone.0166777
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
To evaluate the potential relationship between benign prostatic hyperplasia (BPH) and the arachidonic acid (AA) metabolome, a UHPLC-MS/MS method has been developed and validated for simultaneous determination of AA and its cyclooxygenase(COX) and lipoxygenase( LOX) pathway metabolites (15-HETE, 12-HETE, TXA(2), 5-HETE, AA, PGI(2), PGF(2 alpha), 8-HETE, PGD(2), PGE(2) and LTB4) in rat tissues. The analytes were extracted from tissue samples with a protein precipitation procedure and then separated on a Shim-pack XR-ODSC18 column with 0.05% formic acid in water (pH adjusted with dilute ammonia) and methanol: acetonitrile (20: 80, v/v). Detection was performed on a UHPLC-MS/MS system with electrospray negative ionization (ESI) and a multiple reaction-monitoring mode. The lower limits of quantification (LLOQ) were 0.25-50 ng/mL for all of the analytes in the prostate, seminal, bladder, liver and kidney tissues. The absolute recoveries of the analytes from all of the tissues were more than 50%. By means of the method developed, the AA metabolites in tissue samples from Sham and BPH group rats were determined. The eleven bio-markers in the BPH group prostate, seminal, bladder, liver and kidney tissues were significantly higher than those of the sham group, indicating that BPH fortified the inducible expression of COX and LOX, as well as increased the production of AA and eicosanoids. The method described here offers a useful tool for the evaluation of complex regulatory eicosanoids responses in vivo.
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页数:17
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