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Muresan P, Woodhams S, Smith F, Taresco V, Shah J, Wong M, Chapman V, Smith S, Hathway G, Rahman R, Gershkovich P, Marlow M. Evaluation of cannabidiol nanoparticles and nanoemulsion biodistribution in the central nervous system after intrathecal administration for the treatment of pain. Nanomedicine 2023; 49:102664. [PMID: 36813014 DOI: 10.1016/j.nano.2023.102664] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 02/03/2023] [Accepted: 02/08/2023] [Indexed: 02/22/2023]
Abstract
We investigated how the biodistribution of cannabidiol (CBD) within the central nervous system (CNS) is influenced by two different formulations, an oil-in-water (O/W) nanoemulsion and polymer-coated nanoparticles (PCNPs). We observed that both CBD formulations administered were preferentially retained in the spinal cord, with high concentrations reaching the brain within 10 min of administration. The CBD nanoemulsion reached Cmax in the brain at 210 ng/g within 120 min (Tmax), whereas the CBD PCNPs had a Cmax of 94 ng/g at 30 min (Tmax), indicating that rapid brain delivery can be achieved through the use of PCNPs. Moreover, the AUC0-4h of CBD in the brain was increased 3.7-fold through the delivery of the nanoemulsion as opposed to the PCNPs, indicating higher retention of CBD at this site. Both formulations exhibited immediate anti-nociceptive effects in comparison to the respective blank formulations.
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Affiliation(s)
- Paula Muresan
- School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK
| | - Stephen Woodhams
- Pain Centre Versus Arthritis, School of Life Sciences, Queen's Medical Centre, University of Nottingham, Nottingham NG7 2RD, UK
| | - Fiona Smith
- School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK
| | - Vincenzo Taresco
- School of Chemistry, University of Nottingham, Nottingham NG7 2RD, UK
| | - Jaymin Shah
- Research and Development, Pfizer, Groton, CT 06340, USA
| | - Mei Wong
- Drug Product Design, Discovery Park, Pfizer, Sandwich CT13 9ND, UK
| | - Victoria Chapman
- Pain Centre Versus Arthritis, School of Life Sciences, Queen's Medical Centre, University of Nottingham, Nottingham NG7 2RD, UK
| | - Stuart Smith
- School of Medicine, Queen's Medical Centre, University of Nottingham, Nottingham NG7 2RD, UK
| | - Gareth Hathway
- Pain Centre Versus Arthritis, School of Life Sciences, Queen's Medical Centre, University of Nottingham, Nottingham NG7 2RD, UK
| | - Ruman Rahman
- School of Medicine, Biodiscovery Institute, University of Nottingham, Nottingham NG7 2RD, UK
| | - Pavel Gershkovich
- School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK
| | - Maria Marlow
- School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK.
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