Navigation Links
Drug Improved Survival in Mice With Cystic Fibrosis
Date:2/19/2010

Protein pathway discovery could lead to new treatments, study suggests

FRIDAY, Feb. 19 (HealthDay News) -- In the search for new treatments for cystic fibrosis, U.S. researchers have identified a defective signaling pathway that contributes to the severity of the inherited lung disease.

Cystic fibrosis causes thick, sticky mucus to build up in the lungs and digestive tract, and is one of the most common potentially lethal genetic diseases in children and young adults.

In the new study, the researchers found that correcting the defective signaling pathway for a protein called peroxisome proliferator-activated receptor-y (PPAR-y) reduced cystic fibrosis symptoms in mice.

"Cystic fibrosis results from a genetic mutation in a channel, or membrane pore, that facilitates the transport of chloride and bicarbonate electrolytes from inside the cell to the spaces outside the cell," lead investigator Dr. Gregory Harmon, of the University of California, San Diego School of Medicine, said in a news release from the school.

"Loss of the cystic fibrosis pore channel results in inflammation and mucus accumulation. It also results in dehydration of the cell surfaces that make up the lining spaces inside the lungs and other affected organs, such as the intestinal tract," he explained.

Working with cells from mice and human cell lines from cystic fibrosis patients, Harmon and his colleagues determined that multiple genes affected by PPAR-y were reduced in cystic fibrosis.

The researchers then treated mice with cystic fibrosis with the drug rosiglitazone (a drug that binds and activates PPAR-y) and found that gene expression was largely normalized and survival improved. Among the other findings:

  • Drug treatment also corrected part of the inflammatory process associated with cystic fibrosis.
  • Deleting PPAR-y in the intestine of mice worsened cystic fibrosis.
  • Activating PPAR-y can increase bicarbonate production in intestinal tissue by increasing the activity of bicarbonate-producing enzymes called carbonic anhydrases.

"For the first time, we are able to use a drug that activates bicarbonate transport without affecting chloride transport, and see improvement in the disease," Harmon said.

The findings, published in the Feb. 14 issue of Nature Medicine, may lead to new treatments for cystic fibrosis.

More information

The Cystic Fibrosis Foundation answers questions about cystic fibrosis.



-- Robert Preidt



SOURCE: University of California, San Diego Health Sciences, news release, Feb. 14, 2010


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Small to Mid-Sized Hospitals Turn to Orion Health to Implement Health IT Solutions for Improved Patient Care and Outcomes
2. Medical Transcription Services and EHR Provider MxSecure Launches New Enhanced Website with Goal of Improved Physician Productivity
3. Exercise Success for People Over 50: Reports of Improved Fitness, Circulation and Balance
4. Improved air quality linked to fewer pediatric ear infections
5. Chronic sinusitis patients experience improved quality of life after endoscopic sinus surgery
6. After Tough 2009, Improved Accountability and Consistent Insurance Industry Standards Key in 2010
7. BioProcess International Launches a New and Improved Website for Biopharmaceutical Managers and Scientists
8. IBM Chosen to Build System for Electronic Health Records in Manitoba for Improved Patient Care
9. Parent training key to improved treatment of behavior problems in children with autism
10. United Concordia Dental Redesigns Web Site To Provide Improved Access To Information
11. Parascript Announces AccuDetect 3.0 Computer Aided Detection (CAD) Algorithms With Improved Performance for CAD Vendors and Manufacturers of Mammography Systems
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/13/2017)... , ... October 13, 2017 , ... ... serving communities in the greater Dallas, Miami, and Raleigh regions, is organizing an ... to overcome a rare and deadly chromosome abnormality. , After struggling since birth ...
(Date:10/13/2017)... ... October 13, 2017 , ... ... certification process to promote standards of excellence for the field of eating disorders, ... March 22 – 25, 2018 in Orlando, Florida at the Omni Resort at ...
(Date:10/13/2017)... LUIS OBISPO, Calif. (PRWEB) , ... October 13, 2017 , ... ... Alzheimer’s or dementia. However, many long-term care insurance companies have a waiver for care ... is the 90-day elimination period, when the family pays for care, is often waived, ...
(Date:10/13/2017)... ... October 13, 2017 , ... Talented host, ... lowdown on sciatica in a new episode of "Success Files," which is an ... and innovation and investigates each subject in-depth with passion and integrity. , Sciatica ...
(Date:10/12/2017)... ... October 12, 2017 , ... CitiDent and San Francisco dentists, ... cutting-edge Oventus O2Vent technology. As many as 18 million Americans are estimated to ... breathing. Oral appliances can offer significant relief to about 75 percent of people ...
Breaking Medicine News(10 mins):
(Date:10/11/2017)... , Oct. 11, 2017  BioPharmX Corporation (NYSE MKT: ... that developed an innovative way to use nonlinear optical ... delivery of new drugs. ... Dermatology Conference will show how researchers from BioPharmX and ... Medical School used a suite of imaging techniques in ...
(Date:10/10/2017)... Pa. , Oct. 10, 2017   West ... in innovative solutions for injectable drug administration, today shared ... West,s ID Adapter for improving the intradermal administration of ... Fourth Skin Vaccination Summit in May 2017 by Dr. ... Lead, Polio Department, World Health Organization (WHO), and recently ...
(Date:10/4/2017)... Oct. 4, 2017 OBP Medical ... illuminating medical devices, today announced regulatory approval from ... Agency (or Agência Nacional de Vigilância Sanitária (ANVISA)) ... cordless surgical retractor with integrated LED light source ... illumination and exposure of a tissue pocket or ...
Breaking Medicine Technology: