Diseño y formulación de potenciales formas farmacéuticas de antibióticos Beta-Lactamicos útiles frente a microorganismos resistentes: Caracterización fisicoquímica de la formación de complejos de asociación polimérica entre el antibiótico ampicilina y el sistema polimérico PAM-18Na2

Abstract

In the present study the sodium salt of the amphiphilic Poly (maleic acid-alt-1-octadecene) was used to modify the thermodynamic properties of the solubilization process related to the ampicillin trihydrate using biorelevant dissolution media and thereby acquire relevant data in order to know its potential as polymeric material useful in the design of novel formulations of β-Lactam antibiotics used in the treatment of infections associated with resistant microorganisms. Using standarized methodologies the first step was a catalyzed basic hydrolysis and then purification by dialysis and lyophilization. The cuantification were made with UV-VIS spectroscopy under specific conditions (temperature: 37,0°C, ionic strength: 0,15 Mand pH: 1,2 y 7,4). This investigation also report three methodologies of liquid phase saturations of the antibiotic focused to obtain the intrinsic solubility values. As a final aspect this report shows the impact or the consecuence in the use of the amphiphilic polymer in therms of intrinsic solubility attributing a gain when the obtained material is present in the drug solubilization phase.