Topic
Drug carrier
About: Drug carrier is a research topic. Over the lifetime, 18276 publications have been published within this topic receiving 997718 citations. The topic is also known as: drug carriers & drug vehicle.
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TL;DR: Microneedles represent a promising technology to deliver therapeutic compounds into the skin for a range of possible applications and the ratio of microneedle fracture force to skin insertion force was found to be optimal for needles with small tip radius and large wall thickness.
1,298 citations
TL;DR: This work introduces the concept of "functionalization partitioning" of SWNTs, i.e., imparting multiple chemical species, such as PEG, drugs, and fluorescent tags, with different functionalities onto the surface of the same nanotube, which should open up new opportunities in chemical, biological, and medical applications of novel nanomaterials.
Abstract: We show that large surface areas exist for supramolecular chemistry on single-walled carbon nanotubes (SWNTs) prefunctionalized noncovalently or covalently by common surfactant or acid-oxidation routes. Water-soluble SWNTs with poly(ethylene glycol) (PEG) functionalization via these routes allow for surprisingly high degrees of π-stacking of aromatic molecules, including a cancer drug (doxorubicin) with ultrahigh loading capacity, a widely used fluorescence molecule (fluorescein), and combinations of molecules. Binding of molecules to nanotubes and their release can be controlled by varying the pH. The strength of π-stacking of aromatic molecules is dependent on nanotube diameter, leading to a method for controlling the release rate of molecules from SWNTs by using nanotube materials with suitable diameter. This work introduces the concept of “functionalization partitioning” of SWNTs, i.e., imparting multiple chemical species, such as PEG, drugs, and fluorescent tags, with different functionalities onto t...
1,289 citations
TL;DR: Two approaches to further improve the effectiveness of amphiphilic block copolymer-based drug delivery systems are discussed and the feasibility of channel proteins and metal (nano)particles to improve temporal control over the drug release process is discussed.
1,273 citations
TL;DR: The present use and future possibilities of alginate as a tool in drug formulation are discussed, with the potential use of the various qualities as pharmaceutical excipients likely to make an important contribution in the development of polymeric delivery systems.
Abstract: Alginates are established among the most versatile biopolymers, used in a wide range of applications. The conventional use of alginate as an excipient in drug products generally depends on the thickening, gel-forming, and stabilizing properties. A need for prolonged and better control of drug administration has increased the demand for tailor-made polymers. Hydrocolloids like alginate can play a significant role in the design of a controlled-release product. At low pH hydration of alginic acid leads to the formation of a high-viscosity "acid gel." Alginate is also easily gelled in the presence of a divalent cation as the calcium ion. Dried sodium alginate beads reswell, creating a diffusion barrier decreasing the migration of small molecules (e.g., drugs). The ability of alginate to form two types of gel dependent on pH, i.e., an acid gel and an ionotropic gel, gives the polymer unique properties compared to neutral macromolecules. The molecule can be tailor-made for a number of applications. So far more than 200 different alginate grades and a number of alginate salts are manufactured. The potential use of the various qualities as pharmaceutical excipients has not been evaluated fully, but alginate is likely to make an important contribution in the development of polymeric delivery systems. This natural polymer is adopted by Ph.Eur. It can be obtained in an ultrapure form suitable for implants. This review discusses the present use and future possibilities of alginate as a tool in drug formulation.
1,270 citations
TL;DR: In this article, the authors explore the potential use of polymeric nanoparticles as carriers for a wide range of drugs for therapeutic applications, including cancer therapy and controlled delivery of vaccines.
Abstract: Throughout the world today, numerous researchers are exploring the potential use of polymeric nanoparticles as carriers for a wide range of drugs for therapeutic applications. Because of their versatility and wide range of properties, biodegradable polymeric nanoparticles are being used as novel drug delivery systems. In particular, this class of carrier holds tremendous promise in the areas of cancer therapy and controlled delivery of vaccines.
1,245 citations