Navigation Links
Study sheds light on how the immune system protects children from malaria
Date:4/17/2014

According to a study published today in PLOS Pathogens, children who live in regions of the world where malaria is common can mount an immune response to infection with malaria parasites that may enable them to avoid repeated bouts of high fever and illness and partially control the growth of malaria parasites in their bloodstream. The findings may help researchers develop future interventions that prevent or mitigate the disease caused by the malaria parasite.

Each year, approximately 200 million cases of malaria occur worldwide, resulting in roughly 627,000 deaths (mostly children less than the age of 5 years living in sub-Saharan Africa). In 2013, 97 countries had ongoing malaria transmission, according to the World Health Organization. Unlike individuals who are newly exposed to malaria, people living in malaria-endemic regions often do not experience malaria-induced fever and manage to control parasite numbers in the bloodstream. To better understand why, researchers analyzed immune cells from children in Mali who are bitten by malaria-infected mosquitos more than 100 times per year, yet experience malaria fever only two times per year on average. The scientists collected blood samples from children on three occasions: before the start of the six-month malaria season; seven days after each child had been treated for his or her first malaria fever of the season, when symptoms had cleared; and after the subsequent six-month dry season, when little to no malaria transmission occurs.

To simulate malaria infection at these time points, researchers exposed the immune cells to malaria parasites in a test tube. They found that immune cells collected before the malaria season responded by producing large amounts of molecules that cause inflammation, fever and other malaria symptoms. Conversely, cells collected after the first bout of malaria fever responded by producing molecules that control inflammation and destroy the malaria parasite. The third set of immune cells (those taken after the dry season when there is an absence of malaria exposure) lost their ability to produce molecules that control inflammation, leaving children susceptible again to malaria fever. According to the authors, this immune response, which appears to depend on ongoing exposure to malaria parasites, may have evolved to protect young children from potentially life-threatening inflammation and unchecked parasite growth in the face of repeated malaria infections, before they acquire antibodies that reliably protect against the onset of malaria symptoms.


'/>"/>

Contact: Jennifer Routh
jennifer.routh@nih.gov
301-402-1663
NIH/National Institute of Allergy and Infectious Diseases
Source:Eurekalert  

Related medicine news :

1. New study says probiotic use for infant colic is not effective in reducing symptoms
2. Study IDs new cause of brain bleeding immediately after stroke
3. Animal study provides first evidence that gel can prevent multiple virus transmission in vagina/rectum
4. Celldexs Phase 1 study of CDX-1401 published in Science Translational Medicine
5. Study links severe sleep apnea to increased risk of stroke, cancer and death
6. Kessler Foundation scientists receive Biogen Idec grant to study actual reality in MS
7. UT Dallas study: Youth who fail to envision future commit more crimes
8. Study identifies a likely key driver of colorectal cancer development and progression
9. Study gives high marks to NC Pre-K program
10. Proteomics International biomarker study closer to a CDx test for diabetic kidney disease
11. Study links domestic abuse to mental health problems in new mothers
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Study sheds light on how the immune system protects children from malaria
(Date:6/25/2016)... (PRWEB) , ... June 25, 2016 , ... Austin residents ... the American College of Mohs Surgery and to Dr. Russell Peckham for medical and ... highly effective treatment for skin cancer. The selective fellowship in Mohs Micrographic Surgery completed ...
(Date:6/25/2016)... Oklahoma City, Oklahoma (PRWEB) , ... June 25, ... ... to helping both athletes and non-athletes recover from injury. Recently, he has implemented ... for the Oklahoma City area —Johnson is one of the first doctors to ...
(Date:6/24/2016)... ... June 24, 2016 , ... June 19, 2016 is World Sickle Cell Observance ... and the benefits of holistic treatments, Serenity Recovery Center of Marne, Michigan, ... Disease. , Sickle Cell Disease (SCD) is a disorder of the red blood cells, ...
(Date:6/24/2016)... (PRWEB) , ... June 24, 2016 , ... Comfort Keepers® ... American Cancer Society and the Road To Recovery® program to drive cancer patients to ... and other adults to ensure the highest quality of life and ongoing independence. ...
(Date:6/24/2016)... Nevada (PRWEB) , ... June 24, 2016 , ... ... Vegas client, The Grove Investment Group (TGIG), has initiated cultivation and processing operations ... in Las Vegas and Pahrump, Nevada. , Puradigm is the manufacturer of a ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... 24, 2016  Arkis BioSciences, a leading innovator ... more durable cerebrospinal fluid treatments, today announced it ... funding is led by Innova Memphis, followed by ... private investors.  Arkis, new financing will accelerate the ... market release of its in-licensed Endexo® technology. ...
(Date:6/23/2016)... 23, 2016  In a startling report released today, National ... by lacking a comprehensive, proven plan to eliminate prescription opioid overdoses. ... of how states are tackling the worst drug crisis in recorded ... – Kentucky , New Mexico ... . Of the 28 failing states, three – Michigan ...
(Date:6/23/2016)... Bracket , a leading clinical trial technology ... outcomes platform, Bracket eCOA (SM) 6.0, at the 52 ... 30, 2016 in Philadelphia , Pennsylvania.  A ... product of its kind to fully integrate with RTSM, will ... 6.0 is a flexible platform for electronic clinical outcomes assessments ...
Breaking Medicine Technology: