Abstract
Introduction: The comparative pharmacokinetics (PK) and PK/pharmacodynamics (PD) ratios of a new pharmaceutical design of enrofloxacin-alginate in dried beads (EADBs) and the reference enrofloxacin 10% solution was determined in broiler chickens. Also, the same parameters were determined after administering enrofloxacin with a double dosing scheme (through drinking water and as an in-feed medication of EADBs). 500 Arbor-Acres broiler chickens were randomly divided into five groups (n=100), adjusting in all cases, a dose of 10 mg/kg based on water and feed intake as follows: group EADBsad-lib receiving enrofloxacin through EADBs added to their feed as dressing; group EADBsbolus forcing the beads into the proventriculus using a semi-rigid gavage; group Enroad-lib dosed through their drinking water; group Enrobolus also administered into the proventriculus by gavage; group Enrow&f administering 5 mg/kg as EADBs in their feed, plus 5 mg/kg of enrofloxacin through their drinking water.
Methods: The PK parameters and the key PK/PD ratios were determined (Cmax/MIC and AUC0-24/MIC). Only group Enrow&f could achieve the PK/PD ratios regarded as mutant-prevention.
Results: This trial is the first one in which an in-feed medication of enrofloxacin, combined with water dosing, can result in PK/PD parameters superior to those obtained after administering the drug through drinking water at a dose of 10 mg/kg.
Conclusion: Contrary to expectations, groups Enroad-lib and Enrobolus failed to achieve the desired PK/PD ratios when the breakpoint was established at 0.5 μg/mL but did so when MIC was set at 0.1 μg/mL. In contrast, EADBsbolus and Enrow&f achieved an adequate AUC0-24/MIC ratio for both MIC levels.
[http://dx.doi.org/10.1016/S0169-409X(02)00069-8] [PMID: 12363431]
[http://dx.doi.org/10.1016/S0924-8579(02)00029-8] [PMID: 11978504]
[http://dx.doi.org/10.1016/j.ijantimicag.2004.09.018] [PMID: 15737516]
[http://dx.doi.org/10.2460/ajvr.68.8.812] [PMID: 17669019]
[http://dx.doi.org/10.1086/511642] [PMID: 17278059]
[http://dx.doi.org/10.1111/j.1439-0442.1995.tb00421.x] [PMID: 8822191]
[PMID: 7839579]
[http://dx.doi.org/10.1046/j.1365-2885.2001.00355.x] [PMID: 11696080]
[http://dx.doi.org/10.2141/jpsa.43.23]
[http://dx.doi.org/10.1093/ps/83.5.726] [PMID: 15141828]
[http://dx.doi.org/10.3382/japr/pfx044]
[http://dx.doi.org/10.1111/jvp.12153] [PMID: 25224691]
[http://dx.doi.org/10.1136/vr.150.11.350] [PMID: 11936887]
[http://dx.doi.org/10.4172/2155-9600.1000686] [PMID: 29770259]
[http://dx.doi.org/10.1186/s12917-014-0289-1] [PMID: 25440469]
[http://dx.doi.org/10.1016/j.cvsm.2013.04.005] [PMID: 23890240]
[http://dx.doi.org/10.4236/ojvm.2016.62006]
[http://dx.doi.org/10.1016/j.jddst.2019.101241]
[http://dx.doi.org/10.3390/ani11082312] [PMID: 34438769]
[http://dx.doi.org/10.3390/ani12192701] [PMID: 36230443]
[http://dx.doi.org/10.1155/2020/8886095] [PMID: 32832902]
[http://dx.doi.org/10.1016/j.ijbiomac.2019.10.233] [PMID: 31794824]
[http://dx.doi.org/10.1080/10717540490265414] [PMID: 15736831]
[http://dx.doi.org/10.4014/jmb.1606.06071] [PMID: 28081355]
[http://dx.doi.org/10.1111/jvp.12505] [PMID: 29604071]
[http://dx.doi.org/10.1016/j.tvjl.2015.04.016] [PMID: 25981931]
[http://dx.doi.org/10.1016/j.envpol.2022.120440] [PMID: 36265724]
[http://dx.doi.org/10.1016/j.rvsc.2016.07.010] [PMID: 27663369]
[http://dx.doi.org/10.3390/antibiotics10050604] [PMID: 34069540]
[http://dx.doi.org/10.1007/978-3-642-10324-7_2] [PMID: 20204582]
[http://dx.doi.org/10.1111/j.1365-2885.2004.00603.x] [PMID: 15601444]
[http://dx.doi.org/10.1086/519256] [PMID: 17683017]
[http://dx.doi.org/10.3389/fmicb.2022.869538] [PMID: 35992659]
[http://dx.doi.org/10.3390/ani10050896] [PMID: 32455745]
[http://dx.doi.org/10.1111/jvp.12232] [PMID: 25881712]