PMID- 31817900 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240327 IS - 1999-4923 (Print) IS - 1999-4923 (Electronic) IS - 1999-4923 (Linking) VI - 11 IP - 12 DP - 2019 Dec 7 TI - A Novel Hybrid Additive Manufacturing Process for Drug Delivery Systems with Locally Incorporated Drug Depots. LID - 10.3390/pharmaceutics11120661 [doi] LID - 661 AB - Here, we present a new hybrid additive manufacturing (AM) process to create drug delivery systems (DDSs) with selectively incorporated drug depots. The matrix of a DDS was generated by stereolithography (SLA), whereas the drug depots were loaded using inkjet printing. The novel AM process combining SLA with inkjet printing was successfully implemented in an existing SLA test setup. In the first studies, poly(ethylene glycol) diacrylate-based specimens with integrated depots were generated. As test liquids, blue and pink ink solutions were used. Furthermore, bovine serum albumin labeled with Coomassie blue dye as a model drug was successfully placed in a depot inside a DDS. The new hybrid AM process makes it possible to place several drugs independently of each other within the matrix. This allows adjustment of the release profiles of the drugs depending on the size as well as the position of the depots in the DDS. FAU - Konasch, Jan AU - Konasch J AD - Microfluidics, Faculty of Mechanical Engineering and Marine Technology, University of Rostock, Justus-von-Liebig Weg 6, 18059 Rostock, Germany. FAU - Riess, Alexander AU - Riess A AD - Microfluidics, Faculty of Mechanical Engineering and Marine Technology, University of Rostock, Justus-von-Liebig Weg 6, 18059 Rostock, Germany. FAU - Mau, Robert AU - Mau R AD - Microfluidics, Faculty of Mechanical Engineering and Marine Technology, University of Rostock, Justus-von-Liebig Weg 6, 18059 Rostock, Germany. FAU - Teske, Michael AU - Teske M AD - Institute for Biomedical Engineering, University Medical Center Rostock, Friedrich-Barnewitz-Strasse 4, 18119 Rostock, Germany. FAU - Rekowska, Natalia AU - Rekowska N AD - Institute for Biomedical Engineering, University Medical Center Rostock, Friedrich-Barnewitz-Strasse 4, 18119 Rostock, Germany. FAU - Eickner, Thomas AU - Eickner T AD - Institute for Biomedical Engineering, University Medical Center Rostock, Friedrich-Barnewitz-Strasse 4, 18119 Rostock, Germany. FAU - Grabow, Niels AU - Grabow N AD - Institute for Biomedical Engineering, University Medical Center Rostock, Friedrich-Barnewitz-Strasse 4, 18119 Rostock, Germany. AD - Department LL&M, Interdisciplinary Faculty, University of Rostock, Rostock, Albert-Einstein-Str. 25, 18059 Rostock, Germany. FAU - Seitz, Hermann AU - Seitz H AUID- ORCID: 0000-0003-3401-0090 AD - Microfluidics, Faculty of Mechanical Engineering and Marine Technology, University of Rostock, Justus-von-Liebig Weg 6, 18059 Rostock, Germany. AD - Department LL&M, Interdisciplinary Faculty, University of Rostock, Rostock, Albert-Einstein-Str. 25, 18059 Rostock, Germany. LA - eng GR - SE 1807/6-1; TE1233/1-1/Deutsche Forschungsgemeinschaft/ PT - Journal Article DEP - 20191207 PL - Switzerland TA - Pharmaceutics JT - Pharmaceutics JID - 101534003 PMC - PMC6956340 OTO - NOTNLM OT - drug delivery system OT - drug depot OT - hybrid additive manufacturing process OT - inkjet printing OT - poly(ethylene glycol) diacrylate (PEGDA) OT - stereolithography OT - time-controlled drug release COIS- The authors declare no conflict of interest. EDAT- 2019/12/11 06:00 MHDA- 2019/12/11 06:01 PMCR- 2019/12/01 CRDT- 2019/12/11 06:00 PHST- 2019/11/10 00:00 [received] PHST- 2019/12/02 00:00 [revised] PHST- 2019/12/04 00:00 [accepted] PHST- 2019/12/11 06:00 [entrez] PHST- 2019/12/11 06:00 [pubmed] PHST- 2019/12/11 06:01 [medline] PHST- 2019/12/01 00:00 [pmc-release] AID - pharmaceutics11120661 [pii] AID - pharmaceutics-11-00661 [pii] AID - 10.3390/pharmaceutics11120661 [doi] PST - epublish SO - Pharmaceutics. 2019 Dec 7;11(12):661. doi: 10.3390/pharmaceutics11120661.