Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Smoking affects allergy-relevant stem cells

14.11.2012
Environmental contaminants, such as smoking, are harmful to the human organism in relation to the occurrence of allergies. This is known.

Until now, researchers had never investigated whether and to what extent environmental contaminants also affect allergy-relevant stem cells. For the first time a team at the Helmholtz Centre for Environmental Research (UFZ) has found evidence for this:

Smoking affects the development of peripheral allergy-relevant stem cells in the blood. In order to present this result Dr. Irina Lehmann and Dr. Kristin Weiße chose a new scientific path: The combination of exposure analysis and stem cell research.

Stem cells are not specialised, propagate without limit and can develop to different cell types. From these the different cell and tissue types of the human organism, including the allergy-promoting eosinophil granulocytes, are differentiated. Progenitor cells, e.g. eosinophil/basophilic progenitors, which mature in the bone marrow and are then washed out into the bloodstream - the so-called periphery - function as a link between unspecialised stem cells and specialised tissue and organ cells. Until now, whether and to what extent environmental contaminants affect this maturation and release has not been investigated.

The UFZ team of Dr. Irina Lehmann and Dr. Kristin Weiße undertook their investigations from this point. Two facts were already known from a number of earlier studies: Firstly that the blood of allergy sufferers - whether children or adults - shows evidence of increased eosinophil/basophil progenitor levels. Secondly, that the occurrence of such peripheral progenitors in the blood of the umbilical cord indicates a higher risk for subsequent allergies. For the first time, the hypothesis which Dr. Kristin Weiße and Dr. Irina Lehmann developed on this basis combined this knowledge from stem cell research with the results of many years of exposure research at the UFZ. The researchers characterise their approach in the following way: "We wanted to clarify the relationship between environmental influences and the maturation and differentiation of the progenitor cells on the one hand and its contribution to the occurrence of allergies on the other hand. Specifically, we wanted to know whether the occurrence of allergy-relevant progenitor cells in the blood of infants can be changed by environmental influences".

The results of the study, based on the data collected from 60 children aged one year, were recently published in the British medical journal "Clinical & Experimental Allergy": It was found that children with skin manifestations, such as atopic dermatitis or cradle cap, have increased levels of eosinophil progenitors in their blood. In this connection, it was shown for the first time that children already afflicted show particularly sensitive reactions when exposed to environmental contaminants: The offspring of families exposed to significant levels of volatile organic compounds (VOC) at home were found to have considerably higher allergy-relevant eosinophilic/basophilic progenitor cell levels. "That VOCs, large amounts of which are released with cigarette smoke, have the greatest effect on stem cells was not entirely unexpected", explains Dr. Irina Lehmann. "Just as important, however", adds Dr. Kristin Weiße, is "that we can show that alterations in the number of stem cells as a result of harmful substances take place only in children who have already been afflicted with skin manifestations." This leads to the conclusion: There is a relationship between the genetic predisposition for a disease and environmental influences - there are environmental and life style factors which determine whether a genetic predisposition is in fact realised or not.

Considerable logistical effort underlies this knowledge: On the one hand there is the long-term study "LiNA - Life Style and Environmental Factors and their Influence on The Risk of Allergy" in Newborn Children, a joint project of the Helmholtz Centre for Environmental Research and the Städtisches Klinikum St. Georg in Leipzig. 622 mothers, with a total of 629 children born, were recruited for the study between 2006 and 2008. In order to also take prenatal environmental influences into account - in contrast with earlier comparable studies of newborn children - mothers were already included in the investigations during pregnancy and the children from the time of birth. At the same time, it was necessary to become familiar with the methods required for stem cell analysis at the laboratory of the Canadian cooperation partner, Professor Judah Denburg of the McMaster University in Hamilton and to transfer this knowledge to Germany. Dr. Kristin Weiße spent six months in Canada working in the group of Professor Denburg in order to acquire the necessary know-how and profit from the experience of the Canadian partners. Dr. Lehmann and Dr. Weiße agree that "with the subject of environmental contamination and stem cells we have established an exciting new field of research". The UFZ team is currently the only one in the world investigating this relationship with analytical precision and methodical patience. The LiNA study, in the course of which mothers and their children can be observed over several years, represents a unique basis.

Daniela Weber

http://www.ufz.de/index.php?en=30928

Publication:
K. Weisse, I. Lehmann, D. Heroux, T. Kohajda, G. Herberth, S. Röder, M. von Bergen, M. Borte and J. Denburg (2012): The LINA cohort: indoor chemical exposure, circulating eosinophil/basophil (Eo/B) progenitors and early life skin manifestations (pages 1337-1346). Clinical & Experimental Allergy. 09/2012; 42(9):1337-46. DOI:10.1111/j.1365-2222.2012.04024.x
http://dx.doi.org/10.1111/j.1365-2222.2012.04024.x
This research project was supported by the German Academic Exchange Service (DAAD) and the AllerGen NCE Inc. network.
Further Information:
Helmholtz Centre for Environmental Research (UFZ)
Tilo Arnhold (UFZ Press Office)
Phone: +49-341-235-1635
http://www.ufz.de/index.php?en=640
Links:
Environmental Immunology
http://www.ufz.de/index.php?en=1585
At the Helmholtz Centre for Environmental Research (UFZ) scientists are researching the causes and consequences of far-reaching changes to the environment. They are concerned with water resources, biological diversity, the consequences of climate change and adaptability, environmental and biotechnologies, bioenergy, the behaviour of chemicals in the environment, their effect on health, modelling and social science issues. Their guiding theme: Our research contributes to the sustainable use of natural resources and helps to secure this basis for life over the long term under the effects of global change. The UFZ employs 1,000 people in Leipzig, Halle and Magdeburg. It is financed by the federal government and the federal states of Saxony and Saxony-Anhalt.

http://www.ufz.de/

The Helmholtz Association contributes towards solving major and pressing social, scientific and economic issues with scientific excellence in six research areas: Energy, Earth and Environment, Health, Key Technologies, Structure of Matter, Aeronautics, Aerospace and Transport. The Helmholtz Association is Germany's largest scientific organisation with over 33,000 employees in 18 research centres and an annual budget of approximately 3.4 billion euros. Its work stands in the tradition of the naturalist Hermann von Helmholtz (1821-1894).

http://www.helmholtz.de

Daniela Weber/Tilo Arnhold | UFZ News
Further information:
http://www.ufz.de/index.php?en=30928

More articles from Health and Medicine:

nachricht 3D images of cancer cells in the body: Medical physicists from Halle present new method
16.05.2018 | Martin-Luther-Universität Halle-Wittenberg

nachricht Better equipped in the fight against lung cancer
16.05.2018 | Friedrich-Alexander-Universität Erlangen-Nürnberg

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: Explanation for puzzling quantum oscillations has been found

So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics

Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...

Im Focus: Dozens of binaries from Milky Way's globular clusters could be detectable by LISA

Next-generation gravitational wave detector in space will complement LIGO on Earth

The historic first detection of gravitational waves from colliding black holes far outside our galaxy opened a new window to understanding the universe. A...

Im Focus: Entangled atoms shine in unison

A team led by Austrian experimental physicist Rainer Blatt has succeeded in characterizing the quantum entanglement of two spatially separated atoms by observing their light emission. This fundamental demonstration could lead to the development of highly sensitive optical gradiometers for the precise measurement of the gravitational field or the earth's magnetic field.

The age of quantum technology has long been heralded. Decades of research into the quantum world have led to the development of methods that make it possible...

Im Focus: Computer-Designed Customized Regenerative Heart Valves

Cardiovascular tissue engineering aims to treat heart disease with prostheses that grow and regenerate. Now, researchers from the University of Zurich, the Technical University Eindhoven and the Charité Berlin have successfully implanted regenerative heart valves, designed with the aid of computer simulations, into sheep for the first time.

Producing living tissue or organs based on human cells is one of the main research fields in regenerative medicine. Tissue engineering, which involves growing...

Im Focus: Light-induced superconductivity under high pressure

A team of scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg investigated optically-induced superconductivity in the alkali-doped fulleride K3C60under high external pressures. This study allowed, on one hand, to uniquely assess the nature of the transient state as a superconducting phase. In addition, it unveiled the possibility to induce superconductivity in K3C60 at temperatures far above the -170 degrees Celsius hypothesized previously, and rather all the way to room temperature. The paper by Cantaluppi et al has been published in Nature Physics.

Unlike ordinary metals, superconductors have the unique capability of transporting electrical currents without any loss. Nowadays, their technological...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Save the date: Forum European Neuroscience – 07-11 July 2018 in Berlin, Germany

02.05.2018 | Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

Unique scope of UV LED technologies and applications presented in Berlin: ICULTA-2018

12.04.2018 | Event News

 
Latest News

Supersonic waves may help electronics beat the heat

18.05.2018 | Power and Electrical Engineering

Keeping a Close Eye on Ice Loss

18.05.2018 | Information Technology

CrowdWater: An App for Flood Research

18.05.2018 | Information Technology

VideoLinks
Science & Research
Overview of more VideoLinks >>>