• Chem. Phys. Lipids · May 2021

    Intranasal solid lipid nanoparticles for management of pain: A full factorial design approach, characterization & Gamma Scintigraphy.

    • Kushagra Khanna, Nitin Sharma, Sonalika Rawat, Nazia Khan, Ritu Karwasra, Nazeer Hasan, Abhishek Kumar, Gaurav Kumar Jain, Dhruv Kumar Nishad, Sakshum Khanna, Harvinder Popli, and Aseem Bhatnagar.
    • Department of Pharmaceutics, Delhi Pharmaceutical Science and Research University, Delhi, India; Institute of Nuclear Medicine and Allied Sciences (INMAS) Defence Research and Development Organisation, Timarpur, Delhi, India.
    • Chem. Phys. Lipids. 2021 May 1; 236: 105060.

    AbstractPain is a noxious stimulus caused due to tissue damage and varies from mild to severe. Nalbuphine (NLB) is an approved, inexpensive, non-controlled, opioid agonist/antagonist analgesic used worldwide in various clinical settings for pain management. The current study aims to formulate NLB loaded solid lipid nanoparticles (SLNs) using solvent injection technology. The morphological and chemical structure of the developed SLNs were characterized using Field Emission Scanning Electron Microscopy (FESEM), Transmission Electron Microscopy (TEM) and Fourier Transformation Infrared Spectroscopy (FTIR). The results revealed from the point prediction confirmation in design expert software was the formulation of NLB-SLNs with an average particle size of (170.07 ± 25.1 nm), encapsulation efficiency (93.6 ± 1.5%) & loading capacity of 26.67%. The in-vitro permeation of developed NLB-SLNs was observed to be 94.18% at 8 h when compared with NLB solution whose maximum permeation was seen within 3 h of application. Efficacy of the formulation was also evaluated using eddy's hot plate method, where the onset of action started within 10 min of administration, and the maximum effect was observed at 1 h. The NLB-SLNs was screened for cytotoxicity in human embryonic kidney cells (HEK-293), and the dosage was considered safe when administered intranasally in animal since no detectable effect to the brain was observed. Biodistribution and gamma scintigraphy study of NLB-SLNs showed the prepared formulation reaching the target site, i.e. brain and was retained. Conclusively, the prepared NLB-SLNs formulation was safe and effective in producing an analgesic effect in vivo.Copyright © 2021. Published by Elsevier B.V.

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