Navigation Links
How bacteria boost the immune system
Date:6/14/2010

Scientists have long known that certain types of bacteria boost the immune system. Now, Loyola University Health System researchers have discovered how bacteria perform this essential task.

Senior author Katherine L. Knight, PhD. and colleagues report their discovery in a featured article in the June 15, 2010, issue of the Journal of Immunology, now available online. Knight is professor and chair of the Department of Microbiology and Immunology at Loyola University Chicago Stritch School of Medicine.

The human body is teeming with bacteria. In each person, there are about 10 times as many bacterial cells as human cells. Bacteria live on skin, in the respiratory tract and throughout the digestive tract. The digestive tract alone is home to between 500 and 1,000 bacterial species.

While some bacteria cause infections, most species are harmless or perform beneficial functions, such as aiding digestion. These beneficial bugs are called commensal bacteria. One of the most important functions of commensal bacteria is boosting the immune system. Studies by other researchers have found that mice raised in sterile, germ-free environments have poorly developed immune systems. But until now, scientists have not known the mechanism by which bacteria help the immune system.

Knight's lab studied the spores from rod-shaped bacteria called Bacillus, found in the digestive tract. (A spore consists of the DNA of a bacterium, encased in a shell. Bacteria form spores during times of stress, and re-emerge when conditions improve.) Researchers found that when they exposed immune system cells called B lymphocytes to bacterial spores, the B cells began dividing and reproducing.

Researchers further found that molecules on the surfaces of the spores bound to molecules on the surfaces of B cells. This binding is what activated the B cells to divide and multiply. B cells are one of the key components of the immune system. They produce an
'/>"/>

Contact: Jim Ritter
jritter@lumc.edu
708-216-2445
Loyola University Health System
Source:Eurekalert

Page: 1 2

Related medicine news :

1. New strain of bacteria discovered that could aid in oil spill, other environmental cleanup
2. Study: ER computer keyboards and bacteria
3. JAN-PRO Launches Exclusive “EnviroShield™” Disinfecting System - Kills Harmful Bacteria, Including MRSA
4. Understanding the relationship between bacteria and obesity
5. Bacteria as a predicter of colorectal cancer
6. Bacteria May Predict Chances of Colon Cancer
7. FemFlora Reformulated with New Complex of Probiotic Bacteria
8. Suppressing activity of common intestinal bacteria reduces tumor growth
9. Acne is Killed by Using Same Formula that Nature Uses to Keep Our Eyes Free from Bacteria
10. FDA Found Bacteria in Ingredients for Recalled Tylenol, Benadryl
11. Gut bacteria offer new insights -- and hope -- for people with celiac disease
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/17/2014)... 2014-- Colic affects about one in five infants in ... visits during the first several months after birth. Research ... showing promise; however, the April 1, 2014 issue of ... reported on a study, "Probiotics and Infant Colic," concluding ... for infant colic did not reduce crying ...
(Date:4/17/2014)... YORK April 17, 2014 EcoHealth Alliance, a ... health issues, published a comprehensive review today examining the ... Marburg virus. The review calls for improved global surveillance ... as the recent outbreak of Ebola in West Africa ... the countries of Guinea and Liberia. According to ...
(Date:4/17/2014)... by Cesar A. Arias, M.D., Ph.D., at The University ... identified a new superbug that caused a bloodstream infection ... April 17 issue of The New England Journal ... of a class of highly-resistant bacteria known as methicillin-resistant ... major cause of hospital and community-associated infections. The superbug ...
(Date:4/17/2014)... WINSTON-SALEM, N.C. April 17, 2014 Meaningful ... from advanced cancer of the abdomen when treated ... HIPEC, according to a first-of-its-size analysis by physicians ... Forest Baptist has the largest reported, single-center experience ... Edward A. Levine, M.D., and analysis of 20 ...
(Date:4/17/2014)... study has found that India,s shocking rates of suicide ... who are clinging to tiny smallholdings less than ... such as cotton and coffee, that are highly susceptible ... range of previous case studies that point to a ... the ,liberalisation, of the nation,s economy during the 90s. ...
Breaking Medicine News(10 mins):Health News:New study says probiotic use for infant colic is not effective in reducing symptoms 2Health News:Re-emergence of Ebola focuses need for global surveillance strategies 2Health News:Re-emergence of Ebola focuses need for global surveillance strategies 3Health News:New MRSA superbug emerges in Brazil 2Health News:20 years of data shows treatment technique improvement for advanced abdominal cancer 2Health News:New evidence of suicide epidemic among India's 'marginalized' farmers 2Health News:New evidence of suicide epidemic among India's 'marginalized' farmers 3
... The following is a,statement by Steve Case, Co-Founder, AOL and ... Kennedy,s brain cancer diagnosis:, "I was deeply saddened to ... ago I had the opportunity to testify at a hearing ... efforts to fight,cancer, and was able to share some of ...
... Aflac Announces Full-Season Multi-Year Sponsorship, COLUMBUS, Ga., ... ),today announced its signing of a full-season multi-year ... and the No. 99 Ford Fusion.,Additionally, Aflac continues ... Roush Fenway Racing and Carl Edwards., (Photo: ...
... Eye(TM) Retroscope(TM) Improved Polyp Detection by Thirteen Percent, ... Digestive Disease Week,conference in San Diego (DDW 2008), ... from a multi-institutional,study which evaluated the efficacy of ... the ability of physicians to visualize,abnormalities in the ...
... American Thoracic Societys 2008 International Conference in Toronto on Wednesday, ... in young adults. One links low levels of a protein ... risk in young women. A second finds that high levels ... function. , The data from both studies comes from ...
... Crdentia Corp. (OTC Bulletin,Board: CRDT), a leading healthcare staffing ... 31, 2008., Revenue in the quarter was $10,579,387, ... $9,806,540 and an increase of 31% over revenue of,$8,097,329 ... to,$2,310,854 in the first quarter of 2008, compared to ...
... TORONTOA large group of soldiers returning from Iraq ... the small airways of the lung, according to ... their findings at the American Thoracic Societys 2008 ... A total of 56 soldiers from Fort Campbell, ...
Cached Medicine News:Health News:Aflac to be Primary Sponsor of Carl Edwards and the No. 99 Ford Fusion 2Health News:Aflac to be Primary Sponsor of Carl Edwards and the No. 99 Ford Fusion 3Health News:Study presented at DDW 2008 Confirms that New Device Significantly Improves Detection of Polyps in the Colon 2Health News:Study presented at DDW 2008 Confirms that New Device Significantly Improves Detection of Polyps in the Colon 3Health News:Study presented at DDW 2008 Confirms that New Device Significantly Improves Detection of Polyps in the Colon 4Health News:Study presented at DDW 2008 Confirms that New Device Significantly Improves Detection of Polyps in the Colon 5Health News:Studies provide insights into lung disease and lung function in young adults 2Health News:Studies provide insights into lung disease and lung function in young adults 3Health News:Crdentia Announces 2008 First Quarter Results 2Health News:Crdentia Announces 2008 First Quarter Results 3Health News:Crdentia Announces 2008 First Quarter Results 4Health News:Crdentia Announces 2008 First Quarter Results 5Health News:Crdentia Announces 2008 First Quarter Results 6Health News:Crdentia Announces 2008 First Quarter Results 7Health News:Iraq war service: A risk factor for bronchiolitis? 2
(Date:1/15/2014)... WASHINGTON , Jan. 15, 2014 AARP Foundation today ... support older adults suffering from the severe cold weather that ... are committed to helping those in need; so to support ... dollar-for-dollar contributions up to $250,000, which could mean up to ...
(Date:1/15/2014)... N.J. , Jan. 15, 2014  Celsion Corporation (the "Company") ... has received commitments from institutional investors to purchase an ... stock in an at-the-market registered direct offering, led by ... entered into definitive purchase agreements with these investors pursuant ...
(Date:1/15/2014)... Shire plc (LSE: SHP, NASDAQ: SHPG ) ... approval condition to the announced tender offer for all of the ... a result of the waiver, the transaction is no longer conditional ... on January 24, 2014 following the currently scheduled expiration time, subject ...
Breaking Medicine Technology:AARP Foundation Establishes Winter Relief Fund for Older Adults Suffering from the Severe Cold Weather 2AARP Foundation Establishes Winter Relief Fund for Older Adults Suffering from the Severe Cold Weather 3Celsion Corporation Announces $15 Million At-The-Market Registered Direct Offering 2Celsion Corporation Announces $15 Million At-The-Market Registered Direct Offering 3Shire Waives OFT Condition Relating to the Acquisition of ViroPharma Inc. 2Shire Waives OFT Condition Relating to the Acquisition of ViroPharma Inc. 3
... Radial Strength, FlexibilityHOUSTON, March 18 IDEV Technologies ... and marketing of minimally invasive technologies, announced today ... has approved an investigational device exemption (IDE) for ... a novel stent platform designed for the treatment ...
... March 18 ULURU Inc. (NYSE Alternext: ULU) ... diabetic foot ulcers, and data on the use of ... presented at the annual DFCon Global Meeting in Los ... presented on posters that will be on display during ...
Cached Medicine Technology:U.S. Food and Drug Administration Clears Way for Multi-Center Clinical Trial of IDEV Technologies' SUPERA Peripheral Stent 2ULURU Inc. to Present Altrazeal(TM) Clinical Evidence and Advanced Therapeutic Research at the Diabetic Foot Global Conference (DFCon) 2009 2ULURU Inc. to Present Altrazeal(TM) Clinical Evidence and Advanced Therapeutic Research at the Diabetic Foot Global Conference (DFCon) 2009 3
Used for the retrieval of stones, stents, or other objects in the urinary tract under direct vision. Retrieval Forceps are designed for use through rigid or flexible endoscopes. Supplied sterile in p...
Used for the retrieval of stones, stents, or other objects in the urinary tract under direct vision. Retrieval Forceps are designed for use through rigid or flexible endoscopes. Supplied sterile in p...
Fulgurating Electrode, 2 F...
ACMI S-Series Cystourethroscope Systems: Precision instruments designed for superior optical recognition, accurate control, and exceptional durability during steam autoclave sterilization....
Medicine Products: