Navigation Links
Bacteria use host's immune response to their competitive advantage

Millions of bacteria live within the recesses of our noses and upper respiratory tracts, waiting for a chance to infiltrate and infect. But long before these bacteria break through our immune defenses, they must first compete against other bacterial species to colonize the mucus-lined surfaces of our noses.

Competition between two common nose bacteria involves some interesting trickery, according to a new study in PLoS Pathogens. "We're looking at how bacteria use their host, and we've found that the presence of one species leads to the elimination of another," says Jeffrey Weiser, coauthor of the study and professor of pediatrics and microbiology at the University of Pennsylvania, School of Medicine.

In a mouse model, Haemophilus influenzae--a common bacterium that infects children--stimulates the immune system to send out specialized white blood cells that attack its competitor, Streptococcus pneumoniae--a leading cause of pneumonia. "It is striking that the host's response can so completely eliminate the competitor," says Weiser.

The findings also demonstrate how antibiotics and vaccines that target one microbe might inadvertently alter the competitive interactions among other species present.


Citation: Lysenko ES, Ratner AJ, Nelson AL, Weiser JN (2005) The role of innate immune responses in the outcome of interspecies competition for colonization of mucosal surfaces. PLoS Pathogens 1(1): e1.


Source:Public Library of Science

Page: 1

Related biology news :

1. Bacteria collection sheds light on urinary tract infections
2. Solution to Pollution: New Bacteria Eats Toxic Waste
3. The Bacterias guide to survival
4. UF Researchers Map Bacterial Proteins That Cause Tooth Loss
5. Bacterial genome sheds light on synthesizing cancer-fighting compounds
6. Where Bacteria Get Their Genes
7. Bacteria feed on smelly breath (and feet)
8. New insight into autoimmune disease: Bacterial infections promote recognition of self-glycolipids
9. Say what? Bacterial conversation stoppers
10. Bacteria are key to green plastics, drugs
11. Researchers Discover Ancient Origins Of Tuberculosis-causing Bacteria
Post Your Comments:

(Date:11/9/2015)... SAN JOSE, Calif. , Nov. 9, 2015 /PRNewswire/ ... of human interface solutions, today announced broader entry into ... of vehicle-specific solutions that match the pace of consumer ... drivers, and biometric sensors are ideal for the automotive ... the vehicle. Europe , ...
(Date:10/29/2015)... 2015  The J. Craig Venter Institute (JCVI) policy ... and Biosecurity: Lessons Learned and Options for the Future," ... Human Services guidance for synthetic biology providers has worked ... --> --> Synthetic biology promises ... to pose unique biosecurity threats. It now is easier ...
(Date:10/29/2015)... 2015 NXTD ) ("NXT-ID" ... on the growing mobile commerce market and creator ... a leading marketplace to discover and buy innovative ... wallet on StackSocial for this holiday season.   ... "Company"), a biometric authentication company focused on the ...
Breaking Biology News(10 mins):
(Date:12/1/2015)... DIEGO , December 1, 2015 Dr. Harry Lander ... serving as Chief Science Officer and recruits ... Dr. Harry Lander , President of Regen, expands his role to ... and recruits five distinguished scientists to join ... Regen, expands his role to include serving ...
(Date:12/1/2015)... ... ... Matthew “Tex” VerMilyea, PhD, HCLD, has joined Texas Fertility Center as its ... procedures as well as continue his research efforts into the emerging technologies of embryo ... Zealand to bring home a High Complexity Clinical Laboratory Director named Tex,” says ...
(Date:11/30/2015)... ... November 30, 2015 , ... ... physicians, aesthetic practitioners and aesthetics professionals from Central America and abroad for the ... in Panama City, Panama Feb. 17-19, 2016. Testart will present and discuss new ...
(Date:11/30/2015)... ... 2015 , ... Global Stem Cells Group today ... Santiago Marriott. The Global Stem Cells Group GMP facility is equipped with the ... medical researchers and practitioners, experienced in administering stem cell protocols using highly manipulated ...
Breaking Biology Technology: