AUTHOR OF THIS BLOG

DR ANTHONY MELVIN CRASTO, WORLDDRUGTRACKER

Microsponges: A novel strategy for drug delivery system

 drug delivery  Comments Off on Microsponges: A novel strategy for drug delivery system
Aug 102014
 

Figure 2 :Reaction vessel for microsponge preparation by liquid- liquid suspension polymerization

Microsponges are polymeric delivery systems composed of porous microspheres. They are tiny sponge-like spherical particles with a large porous surface. Moreover, they may enhance stability, reduce side effects and modify drug release favorably. Microsponge technology has many favorable characteristics, which make it a versatile drug delivery vehicle. Microsponge Systems are based on microscopic, polymer-based microspheres that can suspend or entrap a wide variety of substances, and can then be incorporated into a formulated product such as a gel, cream, liquid or powder. The outer surface is typically porous, allowing a sustained flow of substances out of the sphere. Microsponges are porous, polymeric microspheres that are used mostly for topical use and have recently been used for oral administration. Microsponges are designed to deliver a pharmaceutical active ingredient efficiently at the minimum dose and also to enhance stability, reduce side effects, and modify drug release.

http://www.japtr.org/article.asp?issn=2231-4040;year=2010;volume=1;issue=3;spage=283;epage=290;aulast=Kaity

 


Kaity S, Maiti S, Ghosh AK, Pal D, Ghosh A, Banerjee S. Microsponges: A novel strategy for drug delivery system. J Adv Pharm Technol Res 2010;1:283-90

 


Kaity S, Maiti S, Ghosh AK, Pal D, Ghosh A, Banerjee S. Microsponges: A novel strategy for drug delivery system. J Adv Pharm Technol Res [serial online] 2010 [cited 2014 Aug 10];1:283-90. Available from: http://www.japtr.org/text.asp?2010/1/3/283/72416

 

Figure 3 :Preparation of microsponges by the quasi-emulsion solvent diffusion method

 

 

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One-Two Nanopunch For Difficult-To-Treat Breast Cancer Drug Delivery: Layered nanoparticles deliver a gene silencer and a drug to shrink tumors

 cancer, drug delivery  Comments Off on One-Two Nanopunch For Difficult-To-Treat Breast Cancer Drug Delivery: Layered nanoparticles deliver a gene silencer and a drug to shrink tumors
Apr 212014
 
Illustration of layer-by-layer synthesis of nanoparticles for treating breast cancer tumors

Double Duty
To deliver a one-two nanopunch to triple-negative breast cancer tumors, researchers start with a lipid-coated sphere filled with the chemotherapy drug doxorubicin (left). Then they add alternating layers of poly-L-arginine and an siRNA sequence (center), capped off by a layer of hyaluronic acid (right), which disguises the particle from the body’s immune system.
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Women with triple-negative breast cancer, a rare but aggressive form of the disease, often find that it is difficult to treat. An early diagnosis allows more treatment options, but women with this type of cancer generally have a lower survival rate than those with other types of breast cancers. To tackle the disease, a team of researchers has developed a nanomedicine that delivers a one-two punch to tumors that weakens their defenses and obliterates them (ACS Nano 2013, DOI: 10.1021/nn4047925).
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Nanoparticles Deliver Three Cancer Drugs To Tumors Drug Delivery: Polymeric materials deliver specific amounts of multiple drugs to disease cells

 nanotechnology  Comments Off on Nanoparticles Deliver Three Cancer Drugs To Tumors Drug Delivery: Polymeric materials deliver specific amounts of multiple drugs to disease cells
Apr 212014
 
Graphic show that a nanoparticle with cisplatin core (green) is formed by polymerization of doxorubicin- and camptothecin-derivatized monomers and a cisplatin cross-linker.

CANCER KILLER
A drug-delivering nanoparticle with cisplatin core (green) is formed by polymerization of doxorubicin- and camptothecin-derivatized monomers and a cisplatin cross-linker.
The first polymer nanoparticles that carry a defined ratio of three cancer drugs and release them with three independent triggering mechanisms have been developed. The approach could provide a new way of delivering specific amounts of multiple drugs to patients and could help researchers optimize doses of such combination therapies.
The drug delivery nanoparticles were developed by Jeremiah A. Johnson of MIT and coworkers (J. Am. Chem. Soc. 2014, DOI: 10.1021/ja502011g).
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Blinged-Out Fat Blob Nanotrucks for Targeted Drug Delivery

 Uncategorized  Comments Off on Blinged-Out Fat Blob Nanotrucks for Targeted Drug Delivery
Apr 152014
 

 

Targeted drug delivery is a popular area of research that melds together the disciplines of chemistry, medicine, and materials. The basic idea is to develop ways to give a person adose of medicine and somehow get that medicine to go to exactly the part of the body that needs it most – and preferably nowhere else. An article recently published in JACSdescribes a clever method of antibiotic delivery that involves fat blobs, gold particles, and their interaction with the toxins released by infectious bacteria.

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http://icanhasscience.com/bacteria/blinged-out-fat-blob-nanotrucks-for-targeted-drug-delivery/

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Nanotechnology Drug Delivery Systems: An Insight

 Uncategorized  Comments Off on Nanotechnology Drug Delivery Systems: An Insight
Apr 152014
 

Nanosponge attaches to Human Breast Cancer cells

Nanosponge particle attaches to Human Breast Cancer cells

One of the most important applications of nanotechnology in medicine involves use of nanoparticles to deliver drugs, and other therapeutic substances to specific types of cells (such as cancer cells). Nanosized structures and devices are smaller than human cells which are around 10,000 nm in diameter and similar in size to biomolecules such as enzymes, proteins (hemoglobin is 5 nm in diameter). Due to their small size, nanoparticles can also penetrate the blood-brain barrier which is impervious to most therapeutic and imaging agents.

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http://trialx.com/curetalk/2012/10/nanotechnology-drug-delivery-systems-an-insight/

Varun AroraVarun Arora

Nanotech drug delivery

 

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Enhancing Neurological Drug Delivery

 Uncategorized  Comments Off on Enhancing Neurological Drug Delivery
Jul 122013
 

 

The challenge of delivering drugs to neurological targets has been a major roadblock to many promising therapies for treating diseases and disorders of the brain. The blood brain barrier blocks the vast majority of all small-molecules and virtually all large molecules from reaching therapeutic targets within the brain.FULL STORY

http://www.dddmag.com/articles/2013/07/enhancing-neurological-drug-delivery?et_cid=3362797&et_rid=523035093&type=cta

 

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