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Critical Reviews™ in Therapeutic Drug Carrier Systems
Factor de Impacto: 2.9 Factor de Impacto de 5 años: 3.72 SJR: 0.736 SNIP: 0.551 CiteScore™: 2.43

ISSN Imprimir: 0743-4863
ISSN En Línea: 2162-660X

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Critical Reviews™ in Therapeutic Drug Carrier Systems

DOI: 10.1615/CritRevTherDrugCarrierSyst.2017017284
pages 209-255

Stimuli-Responsive Systems with Diverse Drug Delivery and Biomedical Applications: Recent Updates and Mechanistic Pathways

Bhupinder Singh
University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh, India 160014; UGC Centre of Excellence in Applications of Nanomaterials, Nanoparticles and Nanocomposites (Biomedical Sciences), Panjab University, Chandigarh, India 160014
Rajneet Kaur Khurana
University Grants Commission Centre of Advanced Studies, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
Babita Garg
University Grants Commission Centre of Advanced Studies, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
Sumant Saini
University Grants Commission Centre of Advanced Studies, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
Ranjot Kaur
University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh, India 160014; School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston PR1 2HE, United Kingdom

SINOPSIS

With the advent of "intelligent" polymeric systems, the use of stimuli-responsive in situ gelling systems has been revolutionized. These interesting polymers exist as free-flowing aqueous solutions before administration and undergo a phase transition to form a viscoelastic gel in a physiological environ through various stimuli such as temperature, pH, solvent, biochemical, magnetic, electric, ultrasound, and photo-polymerization. These smart polymers are endowed with numerous merits such as ease of administration, sustained release, reduced frequent administration with improved patient compliance, and targeted and spatial delivery of a drug with reduced frequency of side effects. Concerted efforts are being made to modify these polymers synthetically because they hold immense potential in various fields such as polymer chemistry, materials science, pharmaceutics, bioengineering medicine, and chemical engineering. In addition to novel drug delivery, these smart polymeric systems have exhibited tremendous applications in tissue engineering, regenerative biomedicine, molecular imprinting, cancer therapy, gene delivery, theranostic and other applications. The current review mainly focuses on the fundamental principles involved during in situ gelling, use of various "smart" drug-delivery formulation systems through diverse routes for their administration, as well as their well-documented biomedical applications. The pertinent literature, marketed formulations, and recent advances on these stimuli-responsive sol−gel-transforming systems are also discussed.


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