Elaboration of hydroxyapatite / polymers / cefuroxime systems for sensitivity study of escherichia co li atcc 25922 strain in agar medium.]
Hydroxyapatite ceramic biomaterial, whose mineral composition is identicatr to that
of bones and teeth is the most used osteoconductive rnaterial for the release of,
active principles. In vitro studies have shown its usefulness for controlled release of
various active agents (Drug Delivery System) such as antibiotics. Because of its
properties, we set a goal to rnake the hydroxyapatite-based matrices mixed
antibiotics able to lead to inhibition of a bacterial culture in agar medium.
Materials and methods
The study of sensitivity was carried out on a strain of Escherichia coli ATCC
Z5gZ2. The antibiotic used is a beta-lactam, cefuroxime. Inhibition diameters on
MH medium were measured after 24 hours of incubation with the hydroxyapatite
disc base loaded with different concentrations of the antibiotic (0.75 to 4.5 mg).
The results showed very satisfactory diameters of inhibition greater or equal to the
control disc loaded with 300 mg of cefuroxime. These inhibition diameters varied
according to the initial load of antibiotic'
The use of hydroxyapatite-based ceramic can be a true alternative to blotter paper
discs for the in vitro determination of the sensitivity of bacteria to antibiotics. Moreover, the load antibiotics. is small compared to the blotter paper disk impregnated with
Auteur(s) : MBAYE G, SOUMBOUNDOU M, DIOUF L A D, NDONG B, SY P M, DJIBOUNE A R, BATHILY E A L, DIOP O, DIOUF M, BASSOUM A, NDOYE O, MBODJ M, SECK-GASSAMA S, DIARR
Pages : 272-280
Année de publication : 2015
Revue : [International Journal of Innovative Science, Engineering & Technology, 2(8)]
N° de volume : 2
Type : Article
Mise en ligne par : MBAYE Gora