Abstract

Layered hydroxides (LHs) have recently fascinated researchers due to their wide application in various fields. These inorganic nanoparticles, with excellent features as nanocarriers in drug delivery systems, have the potential to play an important role in healthcare. Owing to their outstanding ion-exchange capacity, many organic pharmaceutical drugs have been intercalated into the interlayer galleries of LHs and, consequently, novel nanodrugs or smart drugs may revolutionize in the treatment of diseases. Layered hydroxides, as green nanoreservoirs with sustained drug release and cell targeting properties hold great promise of improving health and prolonging life.

Highlights

  • The delivery of bioactive and therapeutic molecules is one of the most interesting areas of research with increasing growth and importance in medicine

  • As a result of the intercalation process, the thermal stability of the intercalated protocatechuic acid was significantly enhanced compared with free protocatechuic acid, and the protocatechuic acid anion was accommodated as a monolayer with an angle from the z-axis of 8° and 15° in PANE and PAND, respectively

  • The release at pH 4.8 occurred by dissolution of Zinc layered hydroxide (ZLH) layers, because ZLH is unstable in acidic media, while in pH 7.4, the release took place through the ion-exchange between the hippuric acid anions and anions in the buffer solution

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Summary

Introduction

The delivery of bioactive and therapeutic molecules is one of the most interesting areas of research with increasing growth and importance in medicine. Nanomaterials are materials with at least one dimension in the nanoscale range, which gives them unusual physical and chemical features, including quantum effect, high reactivity, and high surface area to volume ratio. Layered hydroxides (LHs) are inorganic materials that can be used as hosts to construct organic-inorganic nanocomposites. LHs are composed of nanolayers with two-dimensional infinite layers with nanoscale thickness and offer extensive applications in various areas. These host-guest layered solids can be classified as layered double hydroxides (LDH) and layered hydroxide salts (LHS)

Structure of Layered Hydroxides
Co-Precipitation Method
Ion Exchange Method
Urea Hydrolysis Method
Urea Hydrolysis
Solid State Reaction
Precipitation Method
Hydrolysis of Salts and Oxides
Characterization of Layered Hydroxides
Applications of Layered Hydroxides
Layered Hydroxides in Drug Delivery Systems
Protocatechuic Acid
Etoposide
Methotrexate
Camptothecin
Gallic Acid
Fenbufen
Ellagic Acid
Hippuric Acid
6.1.10. Prednisone
6.1.11. Carnosine and Gallic Acid
6.1.12. Chlorogenic Acid
Perindopril Erbumine
Salicylic Acid
Diclofenac
Sodium Indomethacin
Anti-Histamine Drug Therapy by Layered Hydroxides
Cinnamic Acid
Caffeic Acid
Anti-Tuberculosis Drug Therapy by Layered Hydroxides
Anti-Parkinsonian Drug Therapy by Layered Hydroxides
Folic Acid
Ascorbic Acid
Ciprofloxacin
Paracetamol
Chloramphenicol
The Effect of Physicochemical Properties on Layered Hydroxide Cytotoxicity
Cellular Uptake Pathway of Layered Hydroxides
10. Conclusions
Findings
Conflicts of Interest
Full Text
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