Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Researchers explore PKC role in lung disease

26.02.2013
Study identifies possible therapeutic target to treat asthma and COPD

New research examines the role of PKC in airway smooth muscle contraction and raises the possibility that this enzyme could be a therapeutic target for treating asthma, COPD, and other lung diseases.

In the lungs, pathological increases in the contraction of the smooth muscle cells (SMCs) lining airway walls—a process that decreases airflow—contribute to the chain of events leading to asthma and COPD, two common lung diseases. Jose Perez-Zoghbi and colleagues from Texas Tech University Health Sciences Center designed a series of experiments to investigate the role of the enzyme PKC in this process.

The results, which appear in The Journal of General Physiology, provide new insight into the mechanisms involved in regulating luminal diameter of small airways and reveal PKC as a potential target for drug therapies.

The researchers used phase-contrast video microscopy, confocal microscopy, Western blot analysis, and pharmacological activators and inhibitors to investigate the role of PKC in airway SMC contraction in mouse lung slices. Their results suggest that activation of PKC in small airways promotes an influx of calcium into SMC and subsequent intracellular release of calcium ions to generate low frequency SMC twitching.

PKC activation also induces a strong calcium ion sensitization of contraction, eliciting a stronger contractile response to stimuli that increase free intracellular calcium. Consequently, PKC activation downstream of various molecules, such as thrombin, that are present in the airways in conjunction with inflammatory lung diseases, could sensitize the airway SMCs to contractile stimuli and contribute to the airway hyper responsiveness that is characteristic of asthma and COPD.

About The Journal of General Physiology

Founded in 1918, The Journal of General Physiology (JGP) is published by The Rockefeller University Press. All editorial decisions on manuscripts submitted are made by active scientists in conjunction with our in-house scientific editor. JGP content is posted to PubMed Central, where it is available to the public for free six months after publication. Authors retain copyright of their published works and third parties may reuse the content for non-commercial purposes under a creative commons license. For more information, please visit www.jgp.org.

Dixon, R.E., and L.F. Santana. 2013. J. Gen. Physiol. 141:161 Mukherjee, S., et al. 2013. J. Gen. Physiol. 141:165-178

Rita Sullivan King | EurekAlert!
Further information:
http://www.jgp.org

More articles from Health and Medicine:

nachricht Nanotubes are beacons in cancer-imaging technique
23.05.2016 | Rice University

nachricht More light on cancer
20.05.2016 | Lomonosov Moscow State University

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Worldwide Success of Tyrolean Wastewater Treatment Technology

A biological and energy-efficient process, developed and patented by the University of Innsbruck, converts nitrogen compounds in wastewater treatment facilities into harmless atmospheric nitrogen gas. This innovative technology is now being refined and marketed jointly with the United States’ DC Water and Sewer Authority (DC Water). The largest DEMON®-system in a wastewater treatment plant is currently being built in Washington, DC.

The DEMON®-system was developed and patented by the University of Innsbruck 11 years ago. Today this successful technology has been implemented in about 70...

Im Focus: Computational high-throughput screening finds hard magnets containing less rare earth elements

Permanent magnets are very important for technologies of the future like electromobility and renewable energy, and rare earth elements (REE) are necessary for their manufacture. The Fraunhofer Institute for Mechanics of Materials IWM in Freiburg, Germany, has now succeeded in identifying promising approaches and materials for new permanent magnets through use of an in-house simulation process based on high-throughput screening (HTS). The team was able to improve magnetic properties this way and at the same time replaced REE with elements that are less expensive and readily available. The results were published in the online technical journal “Scientific Reports”.

The starting point for IWM researchers Wolfgang Körner, Georg Krugel, and Christian Elsässer was a neodymium-iron-nitrogen compound based on a type of...

Im Focus: Atomic precision: technologies for the next-but-one generation of microchips

In the Beyond EUV project, the Fraunhofer Institutes for Laser Technology ILT in Aachen and for Applied Optics and Precision Engineering IOF in Jena are developing key technologies for the manufacture of a new generation of microchips using EUV radiation at a wavelength of 6.7 nm. The resulting structures are barely thicker than single atoms, and they make it possible to produce extremely integrated circuits for such items as wearables or mind-controlled prosthetic limbs.

In 1965 Gordon Moore formulated the law that came to be named after him, which states that the complexity of integrated circuits doubles every one to two...

Im Focus: Researchers demonstrate size quantization of Dirac fermions in graphene

Characterization of high-quality material reveals important details relevant to next generation nanoelectronic devices

Quantum mechanics is the field of physics governing the behavior of things on atomic scales, where things work very differently from our everyday world.

Im Focus: Graphene: A quantum of current

When current comes in discrete packages: Viennese scientists unravel the quantum properties of the carbon material graphene

In 2010 the Nobel Prize in physics was awarded for the discovery of the exceptional material graphene, which consists of a single layer of carbon atoms...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Networking 4.0: International Laser Technology Congress AKL’16 Shows New Ways of Cooperations

24.05.2016 | Event News

Challenges of rural labor markets

20.05.2016 | Event News

International expert meeting “Health Business Connect” in France

19.05.2016 | Event News

 
Latest News

11 million Euros for research into magnetic field sensors for medical diagnostics

27.05.2016 | Awards Funding

Fungi – a promising source of chemical diversity

27.05.2016 | Life Sciences

New Model of T Cell Activation

27.05.2016 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>