Vip-Loaded Plga As an Anti-Asthma Nanodrug Candidate Publisher



Athari SS¹ ; Mortaz E^{2, 3, 4, 5} ; Pourpak Z^{6, 7} ; Moin M^{6, 7} ; Moazzeni SM¹ Show Affiliations
Source: Comparative Clinical Pathology Published:2016

Abstract

Poly lactic-co-glycolic acid (PLGA), a biodegradable polymer, can effectively protect encapsulated peptides from enzymatic degradation. PLGA was approved by FDA as a safe drug delivery system suitable for inhalation administration. Vasoactive intestinal peptide (VIP), a 28-amino-acid peptide, displays anti-inflammatory and anti-spasmodic effects, which can be considered as a new therapeutic option to control and treat asthma. Because of in vivo enzymatic degradation of VIP including in the lung, there is a need for an applicable delivery system. In light of this, the purpose of this study was to prepare VIP-loaded PLGA microspheres as a drug delivery system, assuming that the newly-introduced model has the ability to persist for a longer time in respiratory tracts. The PLGA microsphere was produced, and loaded with VIP as an applicable nanodrug system. A series of physiochemical properties were determined, including the morphological characteristics, average size of nanoparticles, electric charge distribution, FTIR spectroscopy absorption, and loading and releasing percentage of the nanodrug. VIP-loaded PLGA exhibited an average size of approximately 550 ± 50 nm. Additionally, the produced microsphere showed 78 % VIP release after 10 h at the pH value corresponding to bronchioalveolar microenvironment (approximately 6.5). In the present study, PLGA was formulated and used as a delivery system for VIP. Taken together, the newly-introduced nanodrug seems to be helpful for the clinical treatment of allergic asthma. PLGA nanoparticles can be considered as a potential efficient delivery system for VIP in the respiratory system. © 2016, Springer-Verlag London.