ISSN: 0973-7510

E-ISSN: 2581-690X

Xue Gao1, Gang Xu1, Yong Liu2, Jianqing Chen1, Yang Cui1, Guangdong Cheng1, Qingbo Yan3 and Yanhua Li
1Department of Animal Pharmacy, College of Veterinary Medicine, Northeast Agricultural University, No.59 Mucai Road, Harbin – 150 030, China.
2Heilongjiang Entry-Exit Inspection and Quarantine Bureau, No. 9 Ganshui Road, Harbin – 150 001 China.
3College of Veterinary Medicine, Northeast Agricultural University, No.59 Mucai Road, Harbin – 150 030, China.
J Pure Appl Microbiol. 2013;7(Spl. Edn.: November):655-662
© The Author(s). 2013
Received: 27/09/2013 | Accepted: 04/11/2013 | Published: 30/11/2013

An ultra-high-performance liquid chromatograph-tandem mass spectrometry (UPLC/MS/MS) method was developed for the determination of amoxicillin sodium and tylosin tartrate in swine plasma. Amoxicillin sodium and tylosin tartrate were orally administrated to swine, and the pharmacokinetics were evaluated in plasma samples by UPLC/MS/MS after solid phase extraction. The linear range for amoxicillin sodium was 0.06–1 ¼Àg/mL (r2 = 0.9975) and that for tylosin tartrate was 0.5–50 ng/mL (r2 = 0.9994). The limit of quantitation and limit of detection for amoxicillin sodium were 0.2 ¼Àg/mL and 0.06 ng/mL, respectively, and the corresponding values for tylosin tartrate were 1.7 ng/mL and 0.5 ng/mL. The intra- and inter-day coefficients of variation were <9.8 % for amoxicillin sodium and <13.5 % for tylosin tartrate. The absolute recoveries of amoxicillin sodium and tylosin tartrate from swine plasma were 67 % and 72 %, respectively. The method showed excellent specificity, accuracy, precision, recovery, and stability. The pharmacokinetics of amoxicillin sodium (15 mg/kg) and tylosin tartrate (10 mg/kg) in healthy swine after administration of a single or compound dose were evaluated. Tylosin influenced the pharmacokinetics of amoxicillin, but amoxicillin did not affect tylosin.


UPLC/MS/MS, Pharmacokinetics, Amoxicillin sodium, Tylosin tartrate, Compound Amoxicillin and Tylosin

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