Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New University of Colorado paper shows novel way to study human inflammatory disease

26.02.2010
A new University of Colorado at Boulder study shows mice infected with the bacteria salmonella develop clinical signs consistent with a deadly and poorly understood human inflammatory disease, a finding that may lead to new therapies.

The human disease, known as Hemophagocytic Lymphohistiocytosis, or HLH, is a rare inflammatory disease that kills between 50 percent and 90 percent of its victims, said Diane Brown, lead author of the study. HLH treatment may require bone marrow transplantation, a drastic therapy with life-long consequences, according to Brown, adjoint curator at the University of Colorado Museum of Natural History.

The disease, in which the immune system becomes hyperactivated, occurs both in an inherited form, known as primary HLH, and in people with no known genetic defect, known as secondary HLH. Both forms are usually triggered by infections. The genetic form of HLH most often strikes infants and very young children.

A paper on the subject is being published Feb. 26 in PLoS One, a journal of the Public Library of Science. Study co-authors, all from CU-Boulder's molecular, cellular and developmental biology department, included Assistant Professor Corrella Detweiler, postdoctoral fellows Melissa McCoy and Carolina Pilonieta, and former master's student Rebecca Nix, now at Supergen in Salt Lake City. The study was funded by the National Institutes of Health and the American Recovery and Relief Act.

Salmonella is a well-known food contaminant, causing a variety of gastrointestinal tract symptoms in humans. While mice infected with salmonella are spared the cramping and diarrhea that humans develop, they were shown to develop a disease syndrome comparable to human secondary HLH, said Brown.

The CU-Boulder research team found that mice infected with salmonella developed fever, enlarged spleens, anemia, reduced numbers of platelets, dangerously high blood levels of an iron-storage protein, and neurological signs. In addition, specialized white blood cells known as hemophagocytic macrophages accumulated in the organs of the body, including bone marrow.

The team previously showed that salmonella-infected mice developed hemophagocytic macrophages, which ingest other white and red blood cells. "These earlier findings helped lead us down the current research path," said Detweiler.

"One part of this study is to try to use our research to understand how anemia develops in these infected mice, which might help us understand how symptoms of HLH develop," said Detweiler. The syndrome can be difficult to recognize and diagnose, she added.

"The availability of this animal model for HLH will help to advance the research and understanding of the underlying mechanisms of this immune system disorder," said Detweiler. "It also should provide a means to test new therapies for HLH."

For more information about MCDB visit http://mcdb.colorado.edu/.
For more information about the CU Museum visit http://cumuseum.colorado.edu

Diane Brown | EurekAlert!
Further information:
http://www.colorado.edu

More articles from Studies and Analyses:

nachricht Multi-year study finds 'hotspots' of ammonia over world's major agricultural areas
17.03.2017 | University of Maryland

nachricht Diabetes Drug May Improve Bone Fat-induced Defects of Fracture Healing
17.03.2017 | Deutsches Institut für Ernährungsforschung Potsdam-Rehbrücke

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

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

Im Focus: A Challenging European Research Project to Develop New Tiny Microscopes

The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.

To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Researchers shoot for success with simulations of laser pulse-material interactions

29.03.2017 | Materials Sciences

Igniting a solar flare in the corona with lower-atmosphere kindling

29.03.2017 | Physics and Astronomy

As sea level rises, much of Honolulu and Waikiki vulnerable to groundwater inundation

29.03.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>