A Dual pH-Responsive Hydrogel Actuator for Lipophilic Drug Delivery.

07:00 EST 13th February 2020 | BioPortfolio

Summary of "A Dual pH-Responsive Hydrogel Actuator for Lipophilic Drug Delivery."

As one of the most promising drug delivery carriers, hydrogels have received considerable attention in recent years. Many previous efforts focused on diffusion-controlled release which allows hydrogels to load and release drugs in vitro and/or in vivo. However, it hardly applies to lipophilic drug delivery due to their poor compatibility with hydrogels. Herein, we propose a novel method for lipophilic drug release based on a dual pH-responsive hydrogel actuator. Specifically, the drug is encapsulated and can be released by a dual pH-controlled capsule switch. Inspired by the deformation mechanism of Drosera leaves, we fabricate the capsule switch with a double-layer structure that is made of two kinds of pH-responsive hydrogel. Two layers are covalently bonded together through silane coupling agents. They can bend collaboratively in basic or acidic environment to achieve "turn on" motion of capsule switch. By incorporating an array of parallel elastomer-stripes on one side of the hydrogel bilayer, various motions (e.g., bending, twisting, and rolling) of the hydrogel bilayer actuator were achieved. We conducted in vitro lipophilic drug release test. The feasibility of this new drug release method is verified. We believe this dual pH-responsive actuator-controlled drug release method may enlighten the possibilities for various drug delivery systems.


Journal Details

This article was published in the following journal.

Name: ACS applied materials & interfaces
ISSN: 1944-8252


DeepDyve research library

PubMed Articles [13578 Associated PubMed Articles listed on BioPortfolio]

Ionic Strength and Thermal Dual-Responsive Bilayer Hollow Spherical Hydrogel Actuator.

As one of the most promising intelligent materials, polymeric hydrogel actuators could produce reversible shape change upon external stimuli. Although complex shape deformation from 2D to 3D have been...

Cellulose-based polymeric emulsifier stabilized poly(N-vinylcaprolactam) hydrogel with temperature and pH responsiveness.

N-vinylcaprolactam (NVCL) is a temperature-responsive monomer, which is widely used for preparing responsive hydrogels. However, poor water solubility of NVCL necessitates the use of emulsifiers for b...

Poly(hydroxybutyrate-co-hydroxyvalerate) microparticles embedded in κ-carrageenan/locust bean gum hydrogel as a dual drug delivery carrier.

A novel composite hydrogel was prepared as a dual drug delivery carrier. Poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) microparticles were prepared to encapsulate simultaneously ketoprofen and mupir...

Hydrogel-based controlled drug delivery for cancer treatment: a review.

As an emerging drug carrier, hydrogels have been widely used for tumor drug delivery. A hydrogel drug carrier can cause less severe side effects than systemic chemotherapy and can achieve sustained de...

Dynamic-Covalent Hydrogel with NIR-Triggered Drug Delivery for Localized Chemo-Photothermal Combination Therapy.

Near-infrared (NIR) light-responsive, injectable hydrogels are among the most promising drug delivery systems for localized anticancer therapy owing to its minimally invasive administration and remote...

Clinical Trials [6786 Associated Clinical Trials listed on BioPortfolio]

Clinical Performance of Hydrogel vs. Silicone Hydrogel Contact Lenses

The aim of this non-dispensing fitting study is to evaluate the subjective comfort, lens handling, lens fitting characteristics and visual acuity of different hydrogel lens designs versus ...

BAY1003803 Single and Multiple Dose Escalation, Safety, Tolerability and Pharmacokinetics Study

Systemic safety following single and multiple dermal administration of BAY1003803

Management of Palmar Hyperhidrosis With Hydrogel-based Iontophoresis

This small feasibility study will evaluate the use of hydrogel electrode pads (rather than tap water baths) to deliver iontophoresis treatment using a traditional iontophoresis device. Par...

Evaluation Of Fanfilcon A Silicone Hydrogel Contact Lens and Two Hydrogel Lenses in Daily Wear

To evaluate the comparative clinical performance of the fanfilcon A silicone hydrogel lens used in daily wear and to compare this with competitive hydrogel lens products.

Efficacy Study of IZN-6D4 Gel for the Treatment of Diabetic Foot Ulcers

The purpose of this study is to determine if topical application of a hydrogel that contains plant extracts will improve healing of diabetic foot ulcers when compared to treatment with a h...

Medical and Biotech [MESH] Definitions

Forms to which substances are incorporated to improve the delivery and the effectiveness of drugs. Drug carriers are used in drug-delivery systems such as the controlled-release technology to prolong in vivo drug actions, decrease drug metabolism, and reduce drug toxicity. Carriers are also used in designs to increase the effectiveness of drug delivery to the target sites of pharmacological actions. Liposomes, albumin microspheres, soluble synthetic polymers, DNA complexes, protein-drug conjugates, and carrier erythrocytes among others have been employed as biodegradable drug carriers.

Systems for the delivery of drugs to target sites of pharmacological actions. Technologies employed include those concerning drug preparation, route of administration, site targeting, metabolism, and toxicity.

Antineoplastic agents that are used to treat hormone-sensitive tumors. Hormone-sensitive tumors may be hormone-dependent, hormone-responsive, or both. A hormone-dependent tumor regresses on removal of the hormonal stimulus, by surgery or pharmacological block. Hormone-responsive tumors may regress when pharmacologic amounts of hormones are administered regardless of whether previous signs of hormone sensitivity were observed. The major hormone-responsive cancers include carcinomas of the breast, prostate, and endometrium; lymphomas; and certain leukemias. (From AMA Drug Evaluations Annual 1994, p2079)

Artificial, single or multilaminar vesicles (made from lecithins or other lipids) that are used for the delivery of a variety of biological molecules or molecular complexes to cells, for example, drug delivery and gene transfer. They are also used to study membranes and membrane proteins.

A standardized nomenclature for clinical drugs and drug delivery devices. It links its names to many of the drug vocabularies commonly used in pharmacy management.

Quick Search

DeepDyve research library

Relevant Topics

Drug Delivery
<!--LGfEGNT2Lhm-->Drug delivery is the method or process of administering a pharmaceutical compound to achieve a therapeutic effect in humans or animals.  <!--LGfEGNT2Lhm-->Drug delivery technologies are <!--LGfEGNT2Lhm-->patent pr...

Drug Discovery
Clinical Approvals Clinical Trials Drug Approvals Drug Delivery Drug Discovery Generics Drugs Prescription Drugs In the fields of medicine, biotechnology and pharmacology, drug discovery is the process by which drugs are dis...

Pharmacy is the science and technique of preparing as well as dispensing drugs and medicines. It is a health profession that links health sciences with chemical sciences and aims to ensure the safe and effective use of pharmaceutical drugs. The scope of...

Searches Linking to this Article