TY - JOUR
T1 - Impact of carrier particle surface properties on drug nanoparticle attachment
AU - Bergillos-Ruiz, Marta
AU - Kumar, Ajay
AU - Hodnett, Benjamin K.
AU - Davern, Peter
AU - Rasmuson, Ake
AU - Hudson, Sarah P.
N1 - Publisher Copyright:
© 2023 The Authors
PY - 2024/2/15
Y1 - 2024/2/15
N2 - Hypothesis: The stabilization and isolation to dryness of drug nanoparticles has always been a challenge for nano-medicine production. In the past, the use of montmorillonite (MMT) clay carrier particles to adsorb drug nanoparticles and maintain their high surface area to volume ratio after isolation to dryness has proven to be effective. We hypothesise that the distribution of hydrophilic and hydrophobic patches on the clay's surface as well as its porosity/roughness, hinder the agglomeration of the drug nanoparticles to the extent that they retain their high surface area to volume ratio and display fast dissolution profiles. Experiments: In this work, the distribution of hydrophobicity and hydrophilicity, and the porosity/roughness, of the surface of selected silica carrier particles were varied and the impact of these variations on drug nanoparticle attachment to the carrier particle and subsequent dissolution profiles was studied. Findings: The fastest dissolution profiles at the highest drug nanoparticle loadings were obtained with a periodic mesoporous organosilane carrier particle which had a homogeneous distribution of hydrophobic and hydrophilic surface properties. Carrier particles with rough/porous surfaces and a combination of hydrophobic and hydrophilic patches resulted in nanocomposite powders with faster dissolution behaviour than carrier particles with predominantly either a hydrophobic or hydrophilic surface, or with non-porous/smoother surfaces.
AB - Hypothesis: The stabilization and isolation to dryness of drug nanoparticles has always been a challenge for nano-medicine production. In the past, the use of montmorillonite (MMT) clay carrier particles to adsorb drug nanoparticles and maintain their high surface area to volume ratio after isolation to dryness has proven to be effective. We hypothesise that the distribution of hydrophilic and hydrophobic patches on the clay's surface as well as its porosity/roughness, hinder the agglomeration of the drug nanoparticles to the extent that they retain their high surface area to volume ratio and display fast dissolution profiles. Experiments: In this work, the distribution of hydrophobicity and hydrophilicity, and the porosity/roughness, of the surface of selected silica carrier particles were varied and the impact of these variations on drug nanoparticle attachment to the carrier particle and subsequent dissolution profiles was studied. Findings: The fastest dissolution profiles at the highest drug nanoparticle loadings were obtained with a periodic mesoporous organosilane carrier particle which had a homogeneous distribution of hydrophobic and hydrophilic surface properties. Carrier particles with rough/porous surfaces and a combination of hydrophobic and hydrophilic patches resulted in nanocomposite powders with faster dissolution behaviour than carrier particles with predominantly either a hydrophobic or hydrophilic surface, or with non-porous/smoother surfaces.
KW - Carrier particles
KW - Dissolution rate
KW - Drug nanoparticles
KW - Liquid antisolvent precipitation
KW - Mesoporous silicates
KW - Solubility
UR - http://www.scopus.com/inward/record.url?scp=85182414173&partnerID=8YFLogxK
U2 - 10.1016/j.ijpharm.2023.123743
DO - 10.1016/j.ijpharm.2023.123743
M3 - Article
C2 - 38151103
AN - SCOPUS:85182414173
SN - 0378-5173
VL - 651
SP - 123743
JO - International Journal of Pharmaceutics
JF - International Journal of Pharmaceutics
M1 - 123743
ER -