Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Infants with poor intestinal flora often develop eczema

23.01.2008
In a healthy intestinal system there is a great variety of natural bacteria. Today many people have an imbalanced flora of intestinal bacteria. Now a new study, from Lund University in Sweden, shows that children with only a limited variety of bacteria in their feces one week after birth more often developed atopical eczema by the age of 18 months. In the study, published in Journal of Allergy and Clinical Immunology, feces were examined from children in Göteborg, London, and Rome.

"A diversified intestinal flora seems to be better at stimulating the immune defense," says Göran Molin, professor of food hygiene at the Faculty of Engineering, Lund University, who co-directed the study with Siv Ahrné, also a professor of food hygiene.

The composition of a child's bacterial flora is dependent on the mother's microflora, since she is the primary source for the child's bacteria at the outset.

"A healthy vagina is totally dominated by lactobacilli, or lactic acid bacteria. With a vaginal delivery the child will come into close contact with the mother's bacteria. If the mother has a good flora of bacteria, the contact is an important help for the child to be able to be colonized by bacteria in the proper way. It can be assumed that certain hygiene measures, such as antibiotics given in some countries in connection with deliveries, in normal cases may have a deleterious effect, since the mother then is at risk to get a skewed bacteria flora, which she passes on to the child," Göran Molin reasons.

But today, many women in the U.S. as many as a third of all women of fertile age have bacterial vaginosis. This is a condition in which other bacteria than lactobacilli dominate in the vagina.

Precisely why people have less diversity in their bacteria is not known. But there arespeculations:

"Our intestinal system developed to deal with lots of lactobacilli. But today our groceries are often heat-treated, and the food is kept in refrigerators explains Siv Ahrné.

Consumption of live lactobacilli included in lactic acid fermented foods has been a regular part of the food intake of humans for a long time. In fact, there are archaeological signs that mankind has used this technique from the beginning of time as it is the simplest and often the safest way to preserve food, and humans have in this way consumed large numbers of live lactobacilli until modern times.

Foods that promote the existence of lactobacilli are soured vegetables, such as sauerkraut, marinated olives, capers, and salted pickles, as well as cheese. The industry has discovered that certain living microorganisms are good and therefore add them to certain products under the umbrella term of probiotica.

The article in Journal of Allergy and Clinical Immunology is in Vol 121, pp. 129-134.

About the study: The children studied were originally included in a study directed by Professor Agnes Wold at Göteborg University, with a total of 300 children whose intestinal flora were examined using traditional methods. From this larger study, 35 children were selected in two categories, those who had been diagnosed with atopical eczema after 18 months and those determined to be free of this disorder after the same period. Only children with clear declarations of good health or eczema diagnosis were selected for the groups studied. The study was performed using genetic methods, which in this connection are more accurate than traditional bacteriological techniques, which are based on growing bacteria in pure cultures in the laboratory, which for some bacterial groups is difficult and sometimes even impossible. The genetic methods more directly target the bacteria's genes in the sample, thus bypassing the culturing stage.

More information about lactobacilli: Lactobacilli are bacteria that belong to the genus Lactobacillus, which includes about 90 species. Lactobacilli grow spontaneously in traditional lactic acid fermented foods, knocking out both food-spoiling bacteria and pathogenic bacteria, for example, by forming lactic acid and lowering the pH of the food to 3.5-4. Examples of common species that occur in these foods are Lactobacillus plantarum and Lactobacillus paracasei. Lactobacilli are also present on mucous membranes, both in the mouth and in the intestines. Lactobacilli completely dominate the bacteria flora in a healthy vagina.

For more information, please contact Siv Ahrné, professor, Industriell näringslära, (Applied Nutrition), phone: +46 (0)46-222 83 27, Siv.Ahrne@appliednutrition.lth.se or Göran Molin, professor, Industriell näringslära, phone: +46 (0)46-222 83 27 (same phone number as Siv Ahrné), Goran.Molin@appliednutrition.lth.se

Kristina Lindgärde | idw
Further information:
http://www.vr.se

More articles from Studies and Analyses:

nachricht Innovative genetic tests for children with developmental disorders and epilepsy
11.07.2018 | Christian-Albrechts-Universität zu Kiel

nachricht Oxygen loss in the coastal Baltic Sea is “unprecedentedly severe”
05.07.2018 | European Geosciences Union

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: First evidence on the source of extragalactic particles

For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.

To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...

Im Focus: Magnetic vortices: Two independent magnetic skyrmion phases discovered in a single material

For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.

Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...

Im Focus: Breaking the bond: To take part or not?

Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.

A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...

Im Focus: New 2D Spectroscopy Methods

Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.

"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....

Im Focus: Chemical reactions in the light of ultrashort X-ray pulses from free-electron lasers

Ultra-short, high-intensity X-ray flashes open the door to the foundations of chemical reactions. Free-electron lasers generate these kinds of pulses, but there is a catch: the pulses vary in duration and energy. An international research team has now presented a solution: Using a ring of 16 detectors and a circularly polarized laser beam, they can determine both factors with attosecond accuracy.

Free-electron lasers (FELs) generate extremely short and intense X-ray flashes. Researchers can use these flashes to resolve structures with diameters on the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Leading experts in Diabetes, Metabolism and Biomedical Engineering discuss Precision Medicine

13.07.2018 | Event News

Conference on Laser Polishing – LaP: Fine Tuning for Surfaces

12.07.2018 | Event News

11th European Wood-based Panel Symposium 2018: Meeting point for the wood-based materials industry

03.07.2018 | Event News

 
Latest News

Subaru Telescope helps pinpoint origin of ultra-high energy neutrino

16.07.2018 | Physics and Astronomy

Barium ruthenate: A high-yield, easy-to-handle perovskite catalyst for the oxidation of sulfides

16.07.2018 | Life Sciences

New research calculates capacity of North American forests to sequester carbon

16.07.2018 | Earth Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>