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Preparation and solid-state characterization of bupivacaine hydrochloride cyclodextrin complexes aimed for buccal delivery.
J Pharm Biomed Anal. 2010 May 01; 52(1):9-18.JP

Abstract

Binary products of bupivacaine hydrochloride (BVP HCl), an amide type local anesthetic, with parent beta-cyclodextrin (beta-CD) and its soluble beta-cyclodextrin-epichlorohydrin polymer (EPI-beta-CD) were prepared and evaluated as a first phase in the development of a novel mucoadhesive formulation aimed for buccal delivery of this drug. The solid products were obtained by physical mixing, ball milling in high-energy mills, co-evaporation and lyophilisation, in order to rationally select the most effective preparation technique. The solid products obtained were carefully characterised by differential scanning calorimetry (DSC), X-ray powder diffractometry (XRPD), Fourier transform infrared spectroscopy (FTIR) and environmental scanning electron microscopy (ESEM). The impact of the preparation techniques on the physicochemical properties of plain drug was also studied. Results of solid-state analysis revealed more intense interactions of BVP HCl with EPI-beta-CD than with native beta-CD, accompanied by stronger reduction of drug crystallinity in the samples, probably favoured by the amorphous nature of the polymeric carrier. While summarising the results of DSC and XRPD analyses, it seems that ball milling of drug/cyclodextrin binary mixtures was particularly efficient in inducing solid-state interaction between the components and it can be considered as the method of choice for preparation of complexes of BVP HCl with beta-CD and EPI-beta-CD. In vitro dissolution properties in artificial saliva of ball-milled BVP HCl and corresponding CD complexes were investigated by simulating the conditions present at the surface of the buccal mucosa. The obtained results confirmed that complexation of BVP HCl with beta-CD and EPI-beta-CD is a suitable tool for properly tailoring the dissolution properties of the drug and it can be favourably exploited for the development of an effective buccal drug delivery system.

Authors+Show Affiliations

Department of Pharmaceutics, Faculty of Pharmacy and Biochemistry, University of Zagreb, A. Kovacića 1, HR-10000 Zagreb, Croatia. mjug@pharma.hrNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Evaluation Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

20004541

Citation

Jug, Mario, et al. "Preparation and Solid-state Characterization of Bupivacaine Hydrochloride Cyclodextrin Complexes Aimed for Buccal Delivery." Journal of Pharmaceutical and Biomedical Analysis, vol. 52, no. 1, 2010, pp. 9-18.
Jug M, Maestrelli F, Bragagni M, et al. Preparation and solid-state characterization of bupivacaine hydrochloride cyclodextrin complexes aimed for buccal delivery. J Pharm Biomed Anal. 2010;52(1):9-18.
Jug, M., Maestrelli, F., Bragagni, M., & Mura, P. (2010). Preparation and solid-state characterization of bupivacaine hydrochloride cyclodextrin complexes aimed for buccal delivery. Journal of Pharmaceutical and Biomedical Analysis, 52(1), 9-18. https://doi.org/10.1016/j.jpba.2009.11.013
Jug M, et al. Preparation and Solid-state Characterization of Bupivacaine Hydrochloride Cyclodextrin Complexes Aimed for Buccal Delivery. J Pharm Biomed Anal. 2010 May 1;52(1):9-18. PubMed PMID: 20004541.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Preparation and solid-state characterization of bupivacaine hydrochloride cyclodextrin complexes aimed for buccal delivery. AU - Jug,Mario, AU - Maestrelli,Francesca, AU - Bragagni,Marco, AU - Mura,Paola, Y1 - 2009/11/18/ PY - 2009/09/29/received PY - 2009/11/11/revised PY - 2009/11/12/accepted PY - 2009/12/17/entrez PY - 2009/12/17/pubmed PY - 2010/4/9/medline SP - 9 EP - 18 JF - Journal of pharmaceutical and biomedical analysis JO - J Pharm Biomed Anal VL - 52 IS - 1 N2 - Binary products of bupivacaine hydrochloride (BVP HCl), an amide type local anesthetic, with parent beta-cyclodextrin (beta-CD) and its soluble beta-cyclodextrin-epichlorohydrin polymer (EPI-beta-CD) were prepared and evaluated as a first phase in the development of a novel mucoadhesive formulation aimed for buccal delivery of this drug. The solid products were obtained by physical mixing, ball milling in high-energy mills, co-evaporation and lyophilisation, in order to rationally select the most effective preparation technique. The solid products obtained were carefully characterised by differential scanning calorimetry (DSC), X-ray powder diffractometry (XRPD), Fourier transform infrared spectroscopy (FTIR) and environmental scanning electron microscopy (ESEM). The impact of the preparation techniques on the physicochemical properties of plain drug was also studied. Results of solid-state analysis revealed more intense interactions of BVP HCl with EPI-beta-CD than with native beta-CD, accompanied by stronger reduction of drug crystallinity in the samples, probably favoured by the amorphous nature of the polymeric carrier. While summarising the results of DSC and XRPD analyses, it seems that ball milling of drug/cyclodextrin binary mixtures was particularly efficient in inducing solid-state interaction between the components and it can be considered as the method of choice for preparation of complexes of BVP HCl with beta-CD and EPI-beta-CD. In vitro dissolution properties in artificial saliva of ball-milled BVP HCl and corresponding CD complexes were investigated by simulating the conditions present at the surface of the buccal mucosa. The obtained results confirmed that complexation of BVP HCl with beta-CD and EPI-beta-CD is a suitable tool for properly tailoring the dissolution properties of the drug and it can be favourably exploited for the development of an effective buccal drug delivery system. SN - 1873-264X UR - https://www.unboundmedicine.com/medline/citation/20004541/Preparation_and_solid_state_characterization_of_bupivacaine_hydrochloride_cyclodextrin_complexes_aimed_for_buccal_delivery_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0731-7085(09)00709-2 DB - PRIME DP - Unbound Medicine ER -