Preparation and evaluation of biodegradable polymeric systems for the intra-articular delivery of drugs

Author:

Ratcliffe J H1,Hunneyball I M2,Smith A2,Wilson C G1,Davis S S1

Affiliation:

1. Departments of Pharmacy, Pharmacology and Physiology, University of Nottingham, NG7 2UH, UK

2. The Research Department, The Boots Company PLC, Nottingham, NG2 3AA, UK

Abstract

Abstract Colloidal suspensions of four biodegradable polymers, polylactic acid (PLA), polybutylcyanoacrylate (PBCA), gelatin (PG) and albumin (PA) were prepared within the size range 1–10 μm. In-vivo biocompatibility tests with synovial tissues were carried out to assess the irritancy of the polymers following intra-articular injection into rabbit knee joints. PLA, PBCA and PG were found to cause joint inflammation whereas PA was well tolerated by the tissues. PA microspheres may provide a means of sustaining the release and reducing the rate of clearance of drugs from the knee joint.

Publisher

Oxford University Press (OUP)

Subject

Pharmaceutical Science,Pharmacology

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