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Pharmacokinetics of Buprenorphine and Sustained-release Buprenorphine in Common Marmosets ( Callithrix jacchus ).
- Source :
-
Journal of the American Association for Laboratory Animal Science : JAALAS [J Am Assoc Lab Anim Sci] 2021 Mar 01; Vol. 60 (2), pp. 188-194. Date of Electronic Publication: 2020 Dec 29. - Publication Year :
- 2021
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Abstract
- Buprenorphine is an essential component of analgesic protocols in common marmosets ( Callithrix jacchus ). The use of buprenorphine HCl (BUP) and sustained-release buprenorphine (BSR) formulations has become commonplace in this species, but the pharmacokinetics have not been evaluated. Healthy adult (age, 2.4 to 6.8 y; 6 female and 6 male) common marmosets were enrolled in this study to determine the pharmacokinetic parameters, plasma concentration-time curves, and any apparent adverse effects of these compounds. Equal numbers of each sex were randomly assigned to receive BUP (0.02 mg/kg IM) or BSR (0.2 mg/kg SC), resulting in peak plasma concentrations (mean ± 1 SD) of 15.2 ± 8.1 and 2.8 ± 1.2 ng/mL, terminal phase t <subscript>1/2</subscript> of 2.2 ± 1.0 and 32.6 ± 9.6 h, and AUC <subscript>0-last</subscript> of 16.1 ± 3.7 and 98.6 ± 42.7 ng × h/mL. The plasma concentrations of buprenorphine exceeded the proposed minimal therapeutic threshold (0.1 ng/mL) at 5 and 15 min after BUP and BSR administration, showing that both compounds are rapid-acting, and remained above that threshold through the final time points of 8 and 72 h. Extrapolation of the terminal elimination phase of the mean concentration-time curves was used to develop the clinical dosing frequencies of 6 to 8 h for BUP and 3.0 to 3.5 d for BSR. Some adverse effects were observed after the administration of BUP to common marmosets in this study, thus mandating judicious use in clinical practice. BSR provided a safe, long-acting option for analgesia and therefore can be used to refine analgesic protocols in this species.
Details
- Language :
- English
- ISSN :
- 2769-6677
- Volume :
- 60
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Journal of the American Association for Laboratory Animal Science : JAALAS
- Publication Type :
- Academic Journal
- Accession number :
- 33375952
- Full Text :
- https://doi.org/10.30802/AALAS-JAALAS-20-000082