PMID- 28454494 OWN - NLM STAT- MEDLINE DCOM- 20171212 LR - 20240530 IS - 1521-0464 (Electronic) IS - 1071-7544 (Print) IS - 1071-7544 (Linking) VI - 24 IP - 1 DP - 2017 Nov TI - Preparation and testing of cefquinome-loaded poly lactic-co-glycolic acid microspheres for lung targeting. PG - 745-751 LID - 10.1080/10717544.2017.1321058 [doi] AB - The aim of this study was to prepare cefquinome-loaded poly lactic-co-glycolic acid (PLGA) microspheres and to evaluate their in vitro and in vivo characteristics. Microspheres were prepared using a spry drier and were characterized in terms of morphology, size, drug-loading coefficient, encapsulation ratio and in vitro release. The prepared microspheres were spherical with smooth surfaces and uniform size (12.4 +/- 1.2 mum). The encapsulation efficiency and drug loading of cefquinome was 91.6 +/- 2.6 and 18.3 +/- 1.3%, respectively. In vitro release of cefquinome from the microspheres was sustained for 36 h. In vivo studies identified the lung as the target tissue and the region of maximum cefquinome release. A partial lung inflammation was observed but disappeared spontaneously as the microspheres were removed through in vivo decay. The sustained cefquinome release from the microspheres revealed its applicability as a drug delivery system that minimized exposure to healthy tissues while increasing the accumulation of therapeutic drug at the target site. These results indicated that the spray-drying method of loading cefquinome into PLGA microspheres is a straightforward method for lung targeting in animals. FAU - Qu, Shaoqi AU - Qu S AD - a Agricultural Bio-Pharmaceutical Laboratory, Qingdao Agricultural University , Qingdao , China and. AD - b National-Local Joint Engineering Laboratory of Agricultural Bio-Pharmaceutical Technology , Qingdao , China. FAU - Zhao, Li AU - Zhao L AD - a Agricultural Bio-Pharmaceutical Laboratory, Qingdao Agricultural University , Qingdao , China and. AD - b National-Local Joint Engineering Laboratory of Agricultural Bio-Pharmaceutical Technology , Qingdao , China. FAU - Zhu, Jiajia AU - Zhu J AD - a Agricultural Bio-Pharmaceutical Laboratory, Qingdao Agricultural University , Qingdao , China and. AD - b National-Local Joint Engineering Laboratory of Agricultural Bio-Pharmaceutical Technology , Qingdao , China. FAU - Wang, Chunmei AU - Wang C AD - a Agricultural Bio-Pharmaceutical Laboratory, Qingdao Agricultural University , Qingdao , China and. AD - b National-Local Joint Engineering Laboratory of Agricultural Bio-Pharmaceutical Technology , Qingdao , China. FAU - Dai, Cunchun AU - Dai C AD - a Agricultural Bio-Pharmaceutical Laboratory, Qingdao Agricultural University , Qingdao , China and. AD - b National-Local Joint Engineering Laboratory of Agricultural Bio-Pharmaceutical Technology , Qingdao , China. FAU - Guo, Hui AU - Guo H AD - a Agricultural Bio-Pharmaceutical Laboratory, Qingdao Agricultural University , Qingdao , China and. AD - b National-Local Joint Engineering Laboratory of Agricultural Bio-Pharmaceutical Technology , Qingdao , China. FAU - Hao, Zhihui AU - Hao Z AD - a Agricultural Bio-Pharmaceutical Laboratory, Qingdao Agricultural University , Qingdao , China and. AD - b National-Local Joint Engineering Laboratory of Agricultural Bio-Pharmaceutical Technology , Qingdao , China. LA - eng PT - Journal Article PL - England TA - Drug Deliv JT - Drug delivery JID - 9417471 RN - 0 (Cephalosporins) RN - 0 (Glycols) RN - 1SIA8062RS (Polylactic Acid-Polyglycolic Acid Copolymer) RN - 26009-03-0 (Polyglycolic Acid) RN - 33X04XA5AT (Lactic Acid) RN - Z74S078CWP (cefquinome) SB - IM MH - Animals MH - Cephalosporins MH - Glycols MH - Lactic Acid MH - Lung MH - *Microspheres MH - Particle Size MH - Polyglycolic Acid MH - Polylactic Acid-Polyglycolic Acid Copolymer PMC - PMC8241178 OTO - NOTNLM OT - Cefquinome OT - in vivo OT - poly lactic-co-glycolic acid microspheres OT - sustained release OT - target COIS- The authors report no conflicts of interest. The authors alone are responsible for the content and writing of this article. National Natural Science Foundation of China10.13039/50110000180931402256201303038-8 High-Level Talent Research Foundation of Qingdao Agricultural University631206. EDAT- 2017/04/30 06:00 MHDA- 2017/12/13 06:00 PMCR- 2017/04/28 CRDT- 2017/04/30 06:00 PHST- 2017/04/30 06:00 [entrez] PHST- 2017/04/30 06:00 [pubmed] PHST- 2017/12/13 06:00 [medline] PHST- 2017/04/28 00:00 [pmc-release] AID - 1321058 [pii] AID - 10.1080/10717544.2017.1321058 [doi] PST - ppublish SO - Drug Deliv. 2017 Nov;24(1):745-751. doi: 10.1080/10717544.2017.1321058.