Navigation Links
Researchers develop oral delivery system to treat inflammatory bowel diseases
Date:10/10/2010

ately 600 nanometers for optimal oral delivery.

For their experiments, the researchers used a mouse model of ulcerative colitis -- a debilitating inflammatory bowel disease in which the digestive tract becomes inflamed, causing severe diarrhea and abdominal pain that can lead to life-threatening complications.

The researchers orally administered thioketal nanoparticles loaded with siRNA that inhibits an inflammation-promoting cytokine called tumor necrosis factor - alpha (TNF-α). The nanoparticles traveled directly to the mouse colons where reactive oxygen species were being produced in excess and decreased the cytokine production levels there.

Tissue samples from the colons treated with siRNA delivered by these thioketal nanoparticles exhibited intact epitheliums, well-defined fingerlike "crypt" structures and lower levels of inflammation -- signs that the colon was protected against ulcerative colitis.

"Since ulcerative colitis is restricted to the colon, these results confirm that the siRNA-loaded thioketal nanoparticles remain stable in non-inflamed regions of the gastrointestinal tract while targeting siRNA to inflamed intestinal tissues," explained the paper's lead author Scott Wilson, a graduate student in the Georgia Tech School of Chemical & Biomolecular Engineering.

The paper showed that thioketal nanoparticles have the chemical and physical properties needed to overcome the obstacles of gastrointestinal fluids, intestinal mucosa and cellular barriers to provide therapy to inflamed intestinal tissues, he added.

The researchers are currently working on increasing the degradation rate of the nanoparticles and enhancing their reactivity with reactive oxygen species. The team also plans to conduct a biodistribution study to detail how the nanoparticles travel through the body.

"Polymer toxicity is something we'll have to investigate further, but during this study we discovered that thioketa
'/>"/>

Contact: Abby Vogel Robinson
abby@innovate.gatech.edu
404-385-3364
Georgia Institute of Technology Research News
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. In Parkinsons disease, brain cells abandon mitochondria, researchers report
2. MIT researchers develop a better way to see molecules at work in living brain cells
3. Scripps researchers, UCSD chemists to create center devoted to chemistrys influence on climate
4. New fisheries system will save about $20 million, Iowa State University researchers find
5. The world is full of darkness, reflected in the physiology of the human retina, Penn researchers say
6. FSU researchers examine how bacteria become resistant to antibiotics
7. Knome Awards Human Exome Sequencing and Analysis to Biomedical Researchers
8. Researchers study sleep apnea and lack of oxygen
9. Bonn researchers use light to make the heart stumble
10. Researchers engineer adult stem cells that do not age
11. OU researchers selected by Navy
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Researchers develop oral delivery system to treat inflammatory bowel diseases
(Date:6/17/2015)... PALM BEACH GARDENS, Fla. , June 17, ... identity management solutions, today announced that its U.are.U ... by Togo,s Eateries, Inc., ... based fast casual sandwich chain, to increase security, ... (POS). The Crossmatch fingerprint readers enable instant, non-repudiable identity ...
(Date:6/16/2015)... Sweden , June 16, 2015 ... from previously communicated that it will amount to at least ... MSEK. Due to the rapid increase in market growth and ... the previously communicated guidance that revenue for 2015 will exceed ... will amount to approximately 2,200 MSEK. Due to ...
(Date:6/12/2015)... 12, 2015  Securus Technologies, a leading provider ... public safety, investigation, corrections and monitoring, announced the ... electronically capture, analyze and identify participants of a ... This system can: , ... and subsequent sign-on process is actually the person ...
Breaking Biology News(10 mins):Togo's Eateries Improve Security and Accountability with Crossmatch Fingerprint Readers 2Togo's Eateries Improve Security and Accountability with Crossmatch Fingerprint Readers 3Fingerprint Cards Raises the Revenue Guidance for Q2 2015 and for the Full Year 2015 2Fingerprint Cards Raises the Revenue Guidance for Q2 2015 and for the Full Year 2015 3Securus Announces Patent Issued for Authorized Presence Verification During Video Visitation 2
... six years of regular aerial surveys and genetics data collected ... pointing to the central Gulf of Maine as a mating ... recently published online in the journal Endangered Species Research ... ) is one of the most endangered marine mammal species ...
... Glacier retreat areas provide an excellent window into the ... to study how quickly soil biological functions become established ... static in the landscape, but instead evolve with time ... how these factors interact can lead to advancements in ...
... as cold sores has an internal pressure eight times higher than ... DNA into human cells, scientists are reporting in a new study. ... human virus opens the door to new treatments for viral ... the American Chemical Society . Alex Evilevitch and colleagues point ...
Cached Biology News:Are North Atlantic right whales mating in the Gulf of Maine? 2Are North Atlantic right whales mating in the Gulf of Maine? 3University of Alberta scientists get dirty at the Robson Glacier 2
(Date:7/3/2015)... ... 03, 2015 , ... The global failure analysis market is expected to reach ... bioscience market is expected to grow at the highest CAGR of 8.46%; its growth ... the research labs and academic institutions for root cause analysis of failure. The market ...
(Date:7/2/2015)... , ... July 03, 2015 , ... Cuvettes have been used in countless labs for ... to find the cuvette they needed. As expected, this was a daunting and tiring ... wrong part because they were not able to navigate the complex catalog structure. , Now ...
(Date:7/2/2015)... Memphis, TN (PRWEB) , ... July 02, 2015 ... ... in the development and manufacturing of surgical instruments in Orthopedics, announced today the ... orthopedic contract-manufacturing and the world's largest provider of surgical instruments to the Spine ...
(Date:7/1/2015)... BANGALORE, India , July 1, 2015 ... that uses next generation sequencing technology to empower cancer ... Storrer as chief executive officer. In his expanded ... responsible for all strategy, business expansion and worldwide operations ... served as Strand,s chairman and CEO since its founding ...
Breaking Biology Technology:Failure Analysis Market to Grow at 7.52% CAGR to 2020 2Failure Analysis Market to Grow at 7.52% CAGR to 2020 3Failure Analysis Market to Grow at 7.52% CAGR to 2020 4Failure Analysis Market to Grow at 7.52% CAGR to 2020 5New Cuvette E-Commerce Website Launched by FireflySci 2In'Tech Medical Acquires Turner Medical to Become a World Leader in Orthopedic Contract-Manufacturing 2In'Tech Medical Acquires Turner Medical to Become a World Leader in Orthopedic Contract-Manufacturing 3Strand Life Sciences Names Scott A. Storrer CEO as Company Continues Global Expansion with Focus on Precision Medicine Product 2Strand Life Sciences Names Scott A. Storrer CEO as Company Continues Global Expansion with Focus on Precision Medicine Product 3
... 2011 Cell Therapeutics, Inc. ("CTI") (Nasdaq and MTA: ... a randomized pivotal trial of pixantrone for the treatment ... the  U.S. Food and Drug Administration,s (the "FDA") Division ... trial, referred to as the PIX-R or PIX 306 ...
... LAFAYETTE, Ind. - Researchers are developing a technology that ... efficient by using a new manufacturing method that employs ... to overcome two major obstacles that hinder widespread adoption ... and increase the efficiency of converting sunlight into an ...
... 9, 2011 Reportlinker.com announces that a ... its catalogue: Diabetic Retinopathy ... to 2017 http://www.reportlinker.com/p0444349/Diabetic-Retinopathy-Therapeutics---Pipeline-Assessment-and-Market-Forecasts-to-2017.html ... Pipeline Assessment and Market Forecasts to 2017 ...
Cached Biology Technology:FDA Provides Guidance for Design of Cell Therapeutics' Pixantrone Pivotal Trial 2FDA Provides Guidance for Design of Cell Therapeutics' Pixantrone Pivotal Trial 3FDA Provides Guidance for Design of Cell Therapeutics' Pixantrone Pivotal Trial 4FDA Provides Guidance for Design of Cell Therapeutics' Pixantrone Pivotal Trial 5Ultrafast laser 'scribing' technique to cut cost, hike efficiency of solar cells 2Reportlinker Adds Diabetic Retinopathy Therapeutics - Pipeline Assessment and Market Forecasts to 2017 2Reportlinker Adds Diabetic Retinopathy Therapeutics - Pipeline Assessment and Market Forecasts to 2017 3