Corporate Banner
Satellite Banner
Immunology
Scientific Community
 
Become a Member | Sign in
Home>News>This Article
  News
Return

We Need Bacteria to Maintain a Good Immune System

Published: Thursday, October 25, 2012
Last Updated: Thursday, October 25, 2012
Bookmark and Share
Dr. Francisco Guarner, from the Vall d'Hebron University Hospital, talked about the functions of the bacteria in our body in the IDIBELL Seminar.

The first organisms those were able to obtain energy through inorganic matter and sunlight appered on Earth more than 3,500 million years ago. These were the cyanobacteria. Currently, there are still cyanobacteria that perform a similar function. The 20% of the total CO2 is fixed by cyanobacteria, being able to transform inorganic matter to organic. Bacteria with very few genes are able to play a key role in the generation of organic matter.

The bacteria, in addition to having the ability to do some functions, have a high adaptive capacity. Eukaryotic and prokaryotic organisms lack certain abilities that microbial communities have.

More benefits than harm

Often we associate bacteria with pathogens. But eukaryotic and prokaryotic organisms and bacteria live in symbiosis. The bacteria are in association with humans since our existence. Some are able to produce diseases, but they are not the majority. The bacteria lose their genetic capacity to adapt and eliminate what they do not need.

Pathogenic bacteria have a small number of genes. These pathogens usually disappear because they do not know how to resist the environment. And in general, the bacteria will produce more benefits than harm to human and other living beings.

In the sixties it was thought that it was better to live in an environment without bacteria. But the animals that were born and grow up in this environment were younger and needed more food. And they had also more atrophied immune system. Therefore, it was found that the bacteria are needed both to improve our growth and to keep a good immune system.

The bacteria have a system that produces vitamins that we do not have. In the colon, there is a constant production of proteins, which changes the presence and degradation of the fiber. "The immune system is instructed in the lining of the intestinal wall, also by infections. However, infections are not needed to develop the immune system. The colon needs to collect this information to instruct the intestinal wall", said Dr. Guarner.

A pathogen collected and recognized in the intestine, causing a cytokine, inflammation, and shows the immune system how to act against this pathogen. Through experiments in mice it has been shown that the presence or absence of bacteria in the intestines makes different the learning process in the brain.

Bacteria have much mobility genes. Two colonies of E. coli may be only 40% genetic match. It has been sequenced the genomes of two thousand species of bacteria. "There are 55 families of bacteria, six of whom live in humans", said the researcher.

"The bacteria in gut and mouth from different people are very similar, as they are very specialized. Whereas bacteria from the skin or hair, for example, differ considerably, even in areas of the same person", said Dr. Guarner.

"It has been in the gut microbiota is deficient in the West, so transplants are being made. It is very common in USA, but not in Spain" concluded the speaker.


Further Information

Join For Free

Access to this exclusive content is for Technology Networks Premium members only.

Join Technology Networks Premium for free access to:

  • Exclusive articles
  • Presentations from international conferences
  • Over 3,100+ scientific posters on ePosters
  • More than 4,500+ scientific videos on LabTube
  • 35 community eNewsletters


Sign In



Forgotten your details? Click Here
If you are not a member you can join here

*Please note: By logging into TechnologyNetworks.com you agree to accept the use of cookies. To find out more about the cookies we use and how to delete them, see our privacy policy.

Related Content

Patented, a Molecule that Opens the Door to Develop New Drugs Against Immune Rejection
Researchers have patented a peptide that inhibits the immune response activated by the enzyme calcineurin which could serve to develop new more specific immunosuppressive drugs.
Thursday, August 01, 2013
Genetically Modified Stem Cells are Effective Against Acute Respiratory Diseases
Administration of genetically modified mesenchymal stem cells regenerates lung tissue and stops the inflammatory process in mice with acute lung injury.
Tuesday, June 18, 2013
Identified a Key Protein in Maintaining the Identity of B Lymphocytes
This finding could be useful for the study of blood diseases such as lymphoma and leukemia.
Monday, June 10, 2013
IDIBELL Licenses to Janus a Patent for the Treatment of Immune Diseases
The technology has been developed entirely in the Institute.
Thursday, December 06, 2012
Scientific News
Can We Break the Link Between Obesity and Diabetes?
Columbia University researchers identify a key molecule involved in the development of type 2 diabetes.
Alzheimer’s Protein Serves as Natural Antibiotic
Alzheimer's-associated amyloid plaques may be part of natural process to trap microbes, findings suggest new therapeutic strategies.
Slime Mold Reveals Clues to Immune Cells’ Directional Abilities
Study from UC San Diego identifies a protein involved in the directional ability of a slime mold.
Supressing Intenstinal Analphylaxis in Peanut Allergy
Study from National Jewish Health shows that blockade of histamine receptors suppresses intestinal anaphylaxis in peanut allergy.
Getting a Better Look at How HIV Infects and Takes Over its Host Cells
A new approach, developed by a team of researchers led by The Rockefeller University and The Aaron Diamond AIDS Research Center (ADARC), offers an unprecedented view of how a virus infects and appropriates a host cell, step by step.
Untangling Disease-Related Protein Misfolding
Work advances understanding of genetic forms of thrombosis, emphysema, cirrhosis of the liver, neurodegenerative diseases and inflammation, among others.
Developing a More Precise Seasonal Flu Vaccine
During the 2014-15 flu season, the poor match between the virus used to make the world’s vaccine stocks and the circulating seasonal virus yielded a vaccine that was less than 20 percent effective.
Fighting Cancer with Borrowed Immunity
A new step in cancer immunotherapy: researchers from the Netherlands Cancer Institute and University of Oslo/Oslo University Hospital show that even if one's own immune cells cannot recognize and fight their tumors, someone else's immune cells might.
Loss Of Y Chromosome Increases Risk Of Alzheimer’s
Men with blood cells that do not carry the Y chromosome are at greater risk of being diagnosed with Alzheimer’s disease. This is in addition to an increased risk of death from other causes, including many cancers. These new findings by researchers at Uppsala University could lead to a simple test to identify those at risk of developing Alzheimer’s disease.
Immune Cells Remember Their First Meal
Scientists at the University of Bristol have identified the trigger for immune cells' inflammatory response – a discovery that may pave the way for new treatments for many human diseases.
SELECTBIO

SELECTBIO Market Reports
Go to LabTube
Go to eposters
 
Access to the latest scientific news
Exclusive articles
Upload and share your posters on ePosters
Latest presentations and webinars
View a library of 1,800+ scientific and medical posters
3,100+ scientific and medical posters
A library of 2,500+ scientific videos on LabTube
4,500+ scientific videos
Close
Premium CrownJOIN TECHNOLOGY NETWORKS PREMIUM FOR FREE!