PMID- 25689130 OWN - NLM STAT- MEDLINE DCOM- 20160607 LR - 20150903 IS - 1365-2885 (Electronic) IS - 0140-7783 (Linking) VI - 38 IP - 5 DP - 2015 Oct TI - Impact of an experimental PRRSV and Streptococcus suis coinfection on the pharmacokinetics of ceftiofur hydrochloride after intramuscular injection in pigs. PG - 475-81 LID - 10.1111/jvp.12209 [doi] AB - This study determined the impact of porcine reproductive and respiratory syndrome virus (PRRSV) and Streptococcus suis coinfection on the pharmacokinetic (PK) profile of ceftiofur hydrochloride in pigs after intramuscular (i.m.) injection. Eighteen clinically normal crossbred gilts were assigned by weight into a challenge group (10 pigs) and control group (eight pigs). Pigs in both groups received a single i.m. injection of ceftiofur hydrochloride (Excenel RTU Sterile Suspension; Zoetis) at a 5 mg/kg BW dose. Serial blood samples were collected to characterize the plasma concentration curve. After a 10 days drug washout period, the challenge group was inoculated with 2 mL of PRRSV isolate VR-2385 (10(5.75) 50% tissue culture infective doses per mL) intranasally and 8 days later inoculated S. suis. When clinical disease was evident, the second PK assessment began in both challenge and control groups. Coinfected pigs demonstrated lower values of AUC and CMAX , but higher values of Cl/F and Vz/F indicating drug kinetics were altered by infection. The data from this study have implications on ceftiofur treatment regimens in diseased pigs. CI - (c) 2015 John Wiley & Sons Ltd. FAU - Day, D N AU - Day DN AD - Swine Medicine Education Center, College of Veterinary Medicine, Iowa State University, Ames, IA, USA. FAU - Sparks, J W AU - Sparks JW AD - Swine Medicine Education Center, College of Veterinary Medicine, Iowa State University, Ames, IA, USA. FAU - Karriker, L A AU - Karriker LA AD - Swine Medicine Education Center, College of Veterinary Medicine, Iowa State University, Ames, IA, USA. FAU - Stalder, K J AU - Stalder KJ AD - Department of Animal Science, Iowa State University, Ames, IA, USA. FAU - Wulf, L W AU - Wulf LW AD - Pharmacology Analytical Support Team (PhAST), College of Veterinary Medicine, Iowa State University, Ames, IA, USA. FAU - Zhang, J AU - Zhang J AD - Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA. FAU - Kinyon, J M AU - Kinyon JM AD - Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA. FAU - Stock, M L AU - Stock ML AD - Biomedical Sciences, College of Veterinary Medicine, Iowa State University, Ames, IA, USA. FAU - Gehring, R AU - Gehring R AD - Veterinary Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, KS, USA. FAU - Wang, C AU - Wang C AD - Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA, USA. FAU - Ellingson, J AU - Ellingson J AD - Swine Medicine Education Center, College of Veterinary Medicine, Iowa State University, Ames, IA, USA. FAU - Coetzee, J F AU - Coetzee JF AD - Pharmacology Analytical Support Team (PhAST), College of Veterinary Medicine, Iowa State University, Ames, IA, USA. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150216 PL - England TA - J Vet Pharmacol Ther JT - Journal of veterinary pharmacology and therapeutics JID - 7910920 RN - 0 (Anti-Bacterial Agents) RN - 0 (Cephalosporins) RN - 83JL932I1C (ceftiofur) SB - IM MH - Animals MH - Anti-Bacterial Agents/*pharmacokinetics/therapeutic use MH - Cephalosporins/*pharmacokinetics/therapeutic use MH - Coinfection/drug therapy/metabolism/microbiology/*veterinary/virology MH - Female MH - Injections, Intramuscular/veterinary MH - Porcine Reproductive and Respiratory Syndrome/*drug therapy/metabolism/microbiology MH - *Porcine respiratory and reproductive syndrome virus MH - Streptococcal Infections/complications/drug therapy/microbiology/*veterinary/virology MH - *Streptococcus suis MH - Swine/metabolism/microbiology/virology MH - Swine Diseases/*drug therapy/microbiology/virology EDAT- 2015/02/18 06:00 MHDA- 2016/06/09 06:00 CRDT- 2015/02/18 06:00 PHST- 2014/09/22 00:00 [received] PHST- 2015/01/16 00:00 [accepted] PHST- 2015/02/18 06:00 [entrez] PHST- 2015/02/18 06:00 [pubmed] PHST- 2016/06/09 06:00 [medline] AID - 10.1111/jvp.12209 [doi] PST - ppublish SO - J Vet Pharmacol Ther. 2015 Oct;38(5):475-81. doi: 10.1111/jvp.12209. Epub 2015 Feb 16.