Influence of salt type and ionic strength on self-assembly of dextran sulfate-ciprofloxacin nanoplexes

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Autor:innen
Kutscher, Marika
Cheow, Wean Sin
Werner, Vera
Lorenz, Udo
Ohlsen, Knut
Meinel, Lorenz
Hadinoto, Kunn
Autor:in (Körperschaft)
Publikationsdatum
2015
Typ der Arbeit
Studiengang
Typ
01A - Beitrag in wissenschaftlicher Zeitschrift
Herausgeber:innen
Herausgeber:in (Körperschaft)
Betreuer:in
Übergeordnetes Werk
International Journal of Pharmaceutics
Themenheft
Link
Reihe / Serie
Reihennummer
Jahrgang / Band
486
Ausgabe / Nummer
1-2
Seiten / Dauer
21-29
Patentnummer
Verlag / Herausgebende Institution
Elsevier
Verlagsort / Veranstaltungsort
Auflage
Version
Programmiersprache
Abtretungsempfänger:in
Praxispartner:in/Auftraggeber:in
Zusammenfassung
We evaluated an analytical setup to identify optimal preparation conditions for nanoplex formation of small molecule drugs and polyelectrolytes using ciprofloxacin (CIP) and dextran sulfate (DS) as model compounds. The suitability of isothermal titration calorimetry (ITC) as a screening tool for rational formulation optimization was assessed. Besides ITC, static and dynamic light scattering, zeta potential measurements and scanning electron microscopy were applied to analyze the influence of different salt types and ionic strengths on CIP/DS nanoplex formation. The addition of low amounts of salt, especially 0.1M NaCl, improved the formation of CIP/DS nanoplexes. The presence of low amounts of salt led to smaller and more numerous particles of higher uniformity but had no influence on the release of CIP from nanoplexes. Furthermore, the molar range, within which efficient complexation was achieved, was broader in the presence of 0.1M NaCl than in the absence of salt with overall comparable complexation efficiency. Importantly, binding affinity correlated with particle shape and morphology, potentially enabling optimization of critical quality attributes based on ITC data. Altogether, ITC along with supplemental methods is a versatile screening tool for the evaluation of nanoplex formulation conditions regarding mixing ratio, salt type and ionic strength.
Schlagwörter
Ciprofloxacin, Dextran sulfate, Isothermal titration calorimetry, Polyelectrolyte complex
Fachgebiet (DDC)
Projekt
Veranstaltung
Startdatum der Ausstellung
Enddatum der Ausstellung
Startdatum der Konferenz
Enddatum der Konferenz
Datum der letzten Prüfung
ISBN
ISSN
0378-5173
1873-3476
Sprache
Englisch
Während FHNW Zugehörigkeit erstellt
Ja
Publikationsstatus
Veröffentlicht
Begutachtung
Peer-Review der ganzen Publikation
Open Access-Status
Lizenz
Zitation
KUTSCHER, Marika, Wean Sin CHEOW, Vera WERNER, Udo LORENZ, Knut OHLSEN, Lorenz MEINEL, Kunn HADINOTO und Oliver GERMERSHAUS, 2015. Influence of salt type and ionic strength on self-assembly of dextran sulfate-ciprofloxacin nanoplexes. International Journal of Pharmaceutics. 2015. Bd. 486, Nr. 1-2, S. 21–29. DOI 10.1016/j.ijpharm.2015.03.022. Verfügbar unter: http://hdl.handle.net/11654/11963