Use of Microfluidics to Fabricate Bioerodable Lipid Hybrid Nanoparticles Containing Hydromorphone or Ketamine for the Relief of Intractable Pain.
Pharm Res
; 37(10): 211, 2020 Oct 02.
Article
em En
| MEDLINE
| ID: mdl-33009588
ABSTRACT
PURPOSE:
For patients with intractable cancer-related pain, administration of strong opioid analgesics and adjuvant agents by the intrathecal (i.t.) route in close proximity to the target receptors/ion channels, may restore pain relief. Hence, the aim of this study was to use bioerodable polymers to encapsulate an opioid analgesic (hydromorphone) and an adjuvant drug (ketamine) to produce prolonged-release formulations for i.t. injection.METHODS:
A two-stage microfluidic method was used to fabricate nanoparticles (NPs). The physical properties were characterised using dynamic light scattering and transmission electron microscopy. A pilot in vivo study was conducted in a rat model of peripheral neuropathic pain.RESULTS:
The in vitro release of encapsulated payload from NPs produced with a polymer mixture (CPP-SA/PLGA 5050) was sustained for 28 days. In a pilot in vivo study, analgesia was maintained over a three day period following i.t. injection of hydromorphone-loaded NPs at 50 µg. Co-administration of ketamine-loaded NPs at 340 µg did not increase the duration of analgesia significantly.CONCLUSIONS:
The two-stage microfluidic method allowed efficient production of analgesic/adjuvant drug-loaded NPs. Our proof-of-principle in vivo study shows prolonged hydromorphone analgesic for 78 h after single i.t. injection. At the i.t. dose administered, ketamine released from NPs was insufficient to augment hydromorphone analgesia.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Dor Intratável
/
Microfluídica
/
Hidromorfona
/
Nanopartículas
/
Ketamina
Limite:
Animals
Idioma:
En
Revista:
Pharm Res
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Austrália