Paliperidone-loaded nose to brain targeted NLCS: optimisation, evaluation, histopathology and pharmacokinetic estimation for schizophernia.

Study was to develop a nanostructured-lipid-careers (NLCs) of paliperidone (PLP) for nose-to-brain targeting. NLCs was prepared by sonication, high-shear homogenisation method, and characterised their mean diameter, PDI, zeta-potential, morphology (by SEM, TEM and AFM), entrapment efficiency, drug loading, release, interaction study (by FTIR), and stability. Further, permeation and ciliotoxicity performed in sheep nasal mucosa, and biodistribution/pharmacokinetic was performed in rats for schizophernia. Developed NLCs showed spherical and clearly 3-dimentinal structure with 129 ± 2.7 nm mean diameter, 0.304 ± 0.003 PDI, -7.61 ± 0.56 mV zeta-potential, 58.16 ± 0.17% entrapment efficiency, 65.8 ± 2% drug loading and 74.32 ± 0.003% release in 12 h, followed by Higuchi model. study showed NLCs have three times higher permeation, compare to pure drug (around 71.50.32% in 6 h) and 3.98 g/cm/h steady sate flux. The blood/brain ratio given by intranasally have higher compare to IV route, and 94.53 ± 21.45% drug targeting efficiency in brain. In conclusion, NLCs have easily crossed BBB, higher drug delivery and effective for schizophrenia in given by intranasal.