Antituberculosis nanodelivery system with controlled-release properties based on para-amino salicylate-zinc aluminum-layered double-hydroxide nanocomposites. 2013

Bullo Saifullah, and Mohd Zobir Hussein, and Samer Hasan Hussein-Al-Ali, and Palanisamy Arulselvan, and Sharida Fakurazi
Materials Synthesis and Characterization Laboratory, Universiti Putra Malaysia, Serdang, Selangor, Malaysia.

We report the intercalation and characterization of para-amino salicylic acid (PASA) into zinc/aluminum-layered double hydroxides (ZLDHs) by two methods, direct and indirect, to form nanocomposites: PASA nanocomposite prepared by a direct method (PASA-D) and PASA nanocomposite prepared by an indirect method (PASA-I). Powder X-ray diffraction, Fourier-transform infrared spectroscopy, and thermogravimetric analysis revealed that the PASA drugs were accommodated within the ZLDH interlayers. The anions of the drug were accommodated as an alternate monolayer (along the long-axis orientation) between ZLDH interlayers. Drug loading was estimated to be 22.8% and 16.6% for PASA-D and PASA-I, respectively. The in vitro release properties of the drug were investigated in physiological simulated phosphate-buffered saline solution of pH 7.4 and 4.8. The release followed the pseudo-second-order model for both nanocomposites. Cell viability (3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide [MTT] assays) was assessed against normal human lung fibroblast MRC-5 and 3T3 mouse fibroblast cells at 24, 48, and 72 hours. The results showed that the nanocomposite formulations did not possess any cytotoxicity, at least up to 72 hours.

UI MeSH Term Description Entries
D010131 Aminosalicylic Acid An antitubercular agent often administered in association with ISONIAZID. The sodium salt of the drug is better tolerated than the free acid. 4-Aminosalicylic Acid,p-Aminosalicylic Acid,para-Aminosalicylic Acid,Alumino-4-Aminosalicylic Acid,Pamisyl,Rezipas,p-Aminosalicylic Acid Monolithium Salt,p-Aminosalicylic Acid Monopotassium Salt,p-Aminosalicylic Acid Monosodium Salt,p-Aminosalicylic Acid, Aluminum (2:1) Salt,p-Aminosalicylic Acid, Calcium (2:1) Salt,p-Aminosalicylic Acid, Monosodium Salt, Dihydrate,4 Aminosalicylic Acid,Acid, Aminosalicylic,Alumino 4 Aminosalicylic Acid,p Aminosalicylic Acid,p Aminosalicylic Acid Monolithium Salt,p Aminosalicylic Acid Monopotassium Salt,p Aminosalicylic Acid Monosodium Salt,para Aminosalicylic Acid
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D002470 Cell Survival The span of viability of a cell characterized by the capacity to perform certain functions such as metabolism, growth, reproduction, some form of responsiveness, and adaptability. Cell Viability,Cell Viabilities,Survival, Cell,Viabilities, Cell,Viability, Cell
D003692 Delayed-Action Preparations Dosage forms of a drug that act over a period of time by controlled-release processes or technology. Controlled Release Formulation,Controlled-Release Formulation,Controlled-Release Preparation,Delayed-Action Preparation,Depot Preparation,Depot Preparations,Extended Release Formulation,Extended Release Preparation,Prolonged-Action Preparation,Prolonged-Action Preparations,Sustained Release Formulation,Sustained-Release Preparation,Sustained-Release Preparations,Timed-Release Preparation,Timed-Release Preparations,Controlled-Release Formulations,Controlled-Release Preparations,Extended Release Formulations,Extended Release Preparations,Slow Release Formulation,Sustained Release Formulations,Controlled Release Formulations,Controlled Release Preparation,Controlled Release Preparations,Delayed Action Preparation,Delayed Action Preparations,Formulation, Controlled Release,Formulations, Controlled Release,Prolonged Action Preparation,Release Formulation, Controlled,Release Formulations, Controlled,Sustained Release Preparation,Timed Release Preparation,Timed Release Preparations
D005347 Fibroblasts Connective tissue cells which secrete an extracellular matrix rich in collagen and other macromolecules. Fibroblast
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D006863 Hydrogen-Ion Concentration The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH pH,Concentration, Hydrogen-Ion,Concentrations, Hydrogen-Ion,Hydrogen Ion Concentration,Hydrogen-Ion Concentrations
D000535 Aluminum A metallic element that has the atomic number 13, atomic symbol Al, and atomic weight 26.98. Aluminium,Aluminium-27,Aluminum-27,Aluminium 27,Aluminum 27
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000995 Antitubercular Agents Drugs used in the treatment of tuberculosis. They are divided into two main classes: "first-line" agents, those with the greatest efficacy and acceptable degrees of toxicity used successfully in the great majority of cases; and "second-line" drugs used in drug-resistant cases or those in which some other patient-related condition has compromised the effectiveness of primary therapy. Anti-Tuberculosis Agent,Anti-Tuberculosis Agents,Anti-Tuberculosis Drug,Anti-Tuberculosis Drugs,Antitubercular Agent,Antitubercular Drug,Tuberculostatic Agent,Tuberculostatic Agents,Antitubercular Drugs,Agent, Anti-Tuberculosis,Agent, Antitubercular,Agent, Tuberculostatic,Anti Tuberculosis Agent,Anti Tuberculosis Agents,Anti Tuberculosis Drug,Anti Tuberculosis Drugs,Drug, Anti-Tuberculosis,Drug, Antitubercular

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