Multi-stimuli-responsive hydrogels and their medical applications

2021 ◽  
Author(s):  
Ali Pourjavadi ◽  
Rozhin Heydarpour ◽  
Zahra Mazaheri Tehrani
Keyword(s):  
Drug Delivery ◽  
Drug Delivery Systems ◽  
Delivery Systems ◽  
Medical Applications ◽  
Self Healing ◽  
Stimuli Responsive ◽  
Antibacterial Materials ◽  
Responsive Hydrogels

This review highlights the medical applications of multi-stimuli-responsive hydrogels as self-healing hydrogels, antibacterial materials and drug-delivery systems.

Advanced Hydrogels Based Drug Delivery Systems for Ophthalmic Delivery

2020 ◽  
Vol 13 (4) ◽  
pp. 291-300 ◽  
Author(s):  
Srividya Gorantla ◽  
Tejashree Waghule ◽  
Vamshi Krishna Rapalli ◽  
Prem Prakash Singh ◽  
Sunil Kumar Dubey ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Drug Delivery Systems ◽  
Delivery Systems ◽  
Age Related Macular Degeneration ◽  
Stimuli Responsive ◽  
Duration Of Action ◽  
Age Related ◽  
Aqueous Gels ◽  
Ophthalmic Delivery ◽  
3D Printed

Hydrogels are aqueous gels composed of cross-linked networks of hydrophilic polymers. Stimuli-responsive based hydrogels have gained focus over the past 20 years for treating ophthalmic diseases. Different stimuli-responsive mechanisms are involved in forming polymer hydrogel networks, including change in temperature, pH, ions, and others including light, thrombin, pressure, antigen, and glucose-responsive. Incorporation of nanocarriers with these smart stimuli-responsive drug delivery systems that can extend the duration of action by increasing ocular bioavailability and reducing the dosing frequency. This review will focus on the hydrogel drug delivery systems highlighting the gelling mechanisms and emerging stimuli-responsive hydrogels from preformed gels, nanogels, and the role of advanced 3D printed hydrogels in vision-threatening diseases like age-related macular degeneration and retinitis pigmentosa. It also provides insight into the limitations of hydrogels along with the safety and biocompatibility of the hydrogel drug delivery systems.

scholarly journals Polymer-Based Smart Drug Delivery Systems for Skin Application and Demonstration of Stimuli-Responsiveness

Polymers ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1285
Author(s):  
Louise Van Gheluwe ◽  
Igor Chourpa ◽  
Coline Gaigne ◽  
Emilie Munnier
Keyword(s):  
Drug Delivery ◽  
Drug Delivery Systems ◽  
Ex Vivo ◽  
Delivery Systems ◽  
Stimuli Responsive ◽  
Stimuli Responsive Polymers ◽  
Smart Drug ◽  
Smart Drug Delivery

Progress in recent years in the field of stimuli-responsive polymers, whose properties change depending on the intensity of a signal, permitted an increase in smart drug delivery systems (SDDS). SDDS have attracted the attention of the scientific community because they can help meet two current challenges of the pharmaceutical industry: targeted drug delivery and personalized medicine. Controlled release of the active ingredient can be achieved through various stimuli, among which are temperature, pH, redox potential or even enzymes. SDDS, hitherto explored mainly in oncology, are now developed in the fields of dermatology and cosmetics. They are mostly hydrogels or nanosystems, and the most-used stimuli are pH and temperature. This review offers an overview of polymer-based SDDS developed to trigger the release of active ingredients intended to treat skin conditions or pathologies. The methods used to attest to stimuli-responsiveness in vitro, ex vivo and in vivo are discussed.

Collagen Nanoparticles in Drug Delivery Systems and Tissue Engineering

2021 ◽  
Vol 11 (23) ◽  
pp. 11369
Author(s):  
Ashni Arun ◽  
Pratyusha Malrautu ◽  
Anindita Laha ◽  
Hongrong Luo ◽  
Seeram Ramakrishna
Keyword(s):  
Drug Delivery ◽  
Tissue Engineering ◽  
Drug Delivery Systems ◽  
Delivery Systems ◽  
Drug Solubility ◽  
Stimuli Responsive ◽  
Preparation Methods ◽  
Nanoparticle Preparation ◽  
Responsive Behavior ◽  
Reduced Toxicity

The versatile natural polymer, collagen, has gained vast attention in biomedicine. Due to its biocompatibility, biodegradability, weak antigenicity, biomimetics and well-known safety profile, it is widely used as a drug, protein and gene carrier, and as a scaffold matrix in tissue engineering. Nanoparticles develop favorable chemical and physical properties such as increased drug half-life, improved hydrophobic drug solubility and controlled and targeted drug release. Their reduced toxicity, controllable characteristics of scaffolds and stimuli-responsive behavior make them suitable in regenerative medicine and tissue engineering. Collagen associates and absorbs nanoparticles leading to significant impacts on their biological functioning in any biofluid. This review will discuss collagen nanoparticle preparation methods and their applications and developments in drug delivery systems and tissue engineering.

Stimuli-Responsive Nano-Drug Delivery Systems for Cancer Therapy

2020 ◽  
pp. 151-162
Author(s):  
Sauraj ◽  
Anuj Kumar ◽  
Bijender Kumar ◽  
Ruchir Priyadarshi ◽  
Chhavi Sharma ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Cancer Therapy ◽  
Drug Delivery Systems ◽  
Delivery Systems ◽  
Stimuli Responsive ◽  
Nano Drug Delivery

Design and self-assembly of albumin nanoclusters as a dynamic-covalent targeting co-delivery and stimuli-responsive controlled release platform

2018 ◽  
Vol 6 (42) ◽  
pp. 6817-6830 ◽  
Author(s):  
Wen Liu ◽  
Jian Dai ◽  
Wei Xue
Keyword(s):  
Drug Delivery ◽  
Controlled Release ◽  
Tumor Microenvironment ◽  
Self Assembly ◽  
Drug Delivery Systems ◽  
Delivery Systems ◽  
Stimuli Responsive ◽  
Target Sites

Stimuli-responsive nanomaterial-based drug delivery systems that are able to actively target the tumor microenvironment, enhance intratumoral accumulation and release drugs at target sites are attractive therapeutic platforms at present.

Recent Progress in Stimuli Responsive Intelligent Nano Scale Drug Delivery Systems: A special focus towards pH sensitive systems

2021 ◽  
Vol 22 ◽  
Author(s):  
Vaidevi Sethuraman ◽  
Kumar Janakiraman ◽  
Venkateshwaran Krishnaswami ◽  
Ruckmani Kandasamy
Keyword(s):  
Drug Delivery ◽  
Cancer Treatment ◽  
Drug Delivery Systems ◽  
Disease Diagnosis ◽  
Delivery Systems ◽  
Ph Sensitive ◽  
Special Focus ◽  
Stimuli Responsive ◽  
Ph Variation ◽  
Responsive Systems

Abstract: Stimuli responsive nanocarriers are gaining much attention due to its versatile multifunctional activities including disease diagnosis and treatment. Recently, clinical applications of nano drug delivery systems for cancer treatment make a considerable challenge due to its limited cellular uptake, low bioavailability, poor targetability, stability issues, and unfavourable pharmacokinetics. To overcome these issues researchers are focussing on stimuli responsive systems. Nano carriers elicit its role through endogenous (pH, temperature, enzyme and redox) or exogenous (temperature, light, magnetic field, ultrasound) stimulus. These systems were designed to overcome the shortcomings such as non-specificity and toxicity associated with the conventional drug delivery systems. The pH variation between healthy cells and tumor microenvironment creates a platform towards the generation of pH sensitive nano delivery systems. Herein, we propose to present an overview of various internal and external stimuli responsive behavior based drug delivery systems. Herein the present review will focus specifically on the significance of various pH- responsive nanomaterials such as polymeric nanoparticles, nano micelles, inorganic based pH sensitive drug delivery carriers such as calcium phosphate nanoparticles, and carbon dots in cancer treatment. Moreover, this review elaborates the recent findings on pH based stimuli responsive drug delivery system with special emphasis towards our reported stimuli responsive systems for cancer treatment.

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