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Designed sponges based on chitosan and cyclodextrin polymer for a local release of ciprofloxacin in diabetic foot infections.

Abstract：

:Diabetic foot infections are the most common complications requiring hospitalisation of patients with diabetes. They often result in amputation to extremities and are associated with high morbi-mortality rates, especially when bone is infected. Treatment of these complications is based on surgical procedures, nursing care and systemic antibiotic therapy for several weeks, with a significant risk of relapse. Due to low blood flow and damage caused by diabetic foot infection, blood supply is decreased, causing low antibiotic diffusion in the infected site and an increase of possible bacterial resistance, making this type of infection particularly difficult to treat. In this context, the aim of this work was to develop a medical device for local antibiotic release. The device is a lyophilized physical hydrogel, i.e a sponge based on two oppositely charged polyelectrolytes (chitosan and poly(cyclodextrin citrate)). Cyclodextrins, via inclusion complexes, increase drug bioavailability and allow an extended release. Using local release administration increases concentrations in the wound without risk of toxicity to the body and prevents the emergence of resistant bacteria. The hydrogel was characterised by rheology. After freeze-drying, a curing process was implemented. The swelling rate and cell viability were evaluated, and finally, the sponge was impregnated with a ciprofloxacin solution to evaluate its drug release profile and its antibacterial activity.

journal_name

Int J Pharm

journal_title

International journal of pharmaceutics

authors

Gauzit Amiel A,Palomino-Durand C,Maton M,Lopez M,Cazaux F,Chai F,Neut C,Foligné B,Martel B,Blanchemain N

doi

10.1016/j.ijpharm.2020.119677

subject

Has Abstract

pub_date

2020-09-25 00:00:00

pages

119677

eissn

0378-5173

issn

1873-3476

pii

S0378-5173(20)30661-X

journal_volume

587

pub_type

杂志文章

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