TY - JOUR
T1 - Magnetic polycaprolactone microspheres
T2 - drug encapsulation and control
AU - El Gohary, Nesrine Abdelrehim
AU - Mahmoud, Abdelrahman
AU - Ashraf Nazmy, Mohamed
AU - Zaabalawi, Rami
AU - El Zahar, Loaa
AU - Khalil, Islam S.M.
AU - Mitwally, Mohamed E.
N1 - Publisher Copyright:
© 2022 Taylor & Francis Group, LLC.
PY - 2024/1/22
Y1 - 2024/1/22
N2 - Targeted drug delivery (TDD) systems have several advantages, especially with drugs having toxic side effects such as lornoxicam (LX) which shows high hepatotoxicity and nephrotoxicity, especially with long-term use. This work represents an attempt to control magnetic microspheres encapsulating LX and magnetite nanoparticles (MNPs) for potential targeted drug delivery of LX. Superparamagnetic nanoparticles were fabricated via the co-precipitation method and together with LX were encapsulated into polycaprolactone (PCL) microspheres through an oil-in-water (O/W) emulsion solvent evaporation method. The effects of changing the amount of drug, MNPs, and volume of the aqueous phase were investigated by preparing several microsphere formulations. Increasing the amount of encapsulated MNPs increased the magnetization of the microspheres without affecting the morphology. Doubling the volume of the aqueous phase resulted in a higher encapsulation efficiency and drug loading; 83.9% and 10.7%, respectively, while increasing the amount of drug had a negative effect on both drug loading and encapsulation efficiency. Drug release from the microspheres was successfully achieved and showed a biphasic nature. A system of four planar coils was then used to magnetically control the movement of a cluster of capsules in a glycerin medium, as a simulation for the targeting process. The microspheres were successfully controlled to move in a U-turn path with sharp corners demonstrating their potential for TDD applications.
AB - Targeted drug delivery (TDD) systems have several advantages, especially with drugs having toxic side effects such as lornoxicam (LX) which shows high hepatotoxicity and nephrotoxicity, especially with long-term use. This work represents an attempt to control magnetic microspheres encapsulating LX and magnetite nanoparticles (MNPs) for potential targeted drug delivery of LX. Superparamagnetic nanoparticles were fabricated via the co-precipitation method and together with LX were encapsulated into polycaprolactone (PCL) microspheres through an oil-in-water (O/W) emulsion solvent evaporation method. The effects of changing the amount of drug, MNPs, and volume of the aqueous phase were investigated by preparing several microsphere formulations. Increasing the amount of encapsulated MNPs increased the magnetization of the microspheres without affecting the morphology. Doubling the volume of the aqueous phase resulted in a higher encapsulation efficiency and drug loading; 83.9% and 10.7%, respectively, while increasing the amount of drug had a negative effect on both drug loading and encapsulation efficiency. Drug release from the microspheres was successfully achieved and showed a biphasic nature. A system of four planar coils was then used to magnetically control the movement of a cluster of capsules in a glycerin medium, as a simulation for the targeting process. The microspheres were successfully controlled to move in a U-turn path with sharp corners demonstrating their potential for TDD applications.
KW - 2023 OA procedure
KW - lornoxicam
KW - magnetic control
KW - magnetite
KW - polycaprolactone microspheres
KW - targeted drug delivery
KW - Drug release
UR - http://www.scopus.com/inward/record.url?scp=85139842516&partnerID=8YFLogxK
U2 - 10.1080/00914037.2022.2132248
DO - 10.1080/00914037.2022.2132248
M3 - Article
AN - SCOPUS:85139842516
SN - 0091-4037
VL - 73
SP - 143
EP - 153
JO - International Journal of Polymeric Materials and Polymeric Biomaterials
JF - International Journal of Polymeric Materials and Polymeric Biomaterials
IS - 2
ER -