ALLERGY, RESPIRATORY
Molecule in Skin May Link Eczema and Asthma
Air Pollution May Raise Blood Pressure
'Safe' Ozone Levels May Not Be for Some
ALTERNATIVE MEDICINE
Regular Yoga May Improve Eating Habits
Maggots as Good as Gel in Leg Ulcer Treatments
When Healing Becomes a Commodity
ANIMAL CARE
Separation Anxiety, Canine-Style
Animals Respond to Acupuncture's Healing Touch
'Comfort Dogs' Come to Emotional Rescue
BONES & JOINTS
Low Vitamin D Raises Women's Hip Fracture Risk
Almost Half of Adults Will Develop Knee Osteoarthritis by 85
Chronic Low Back Pain Is on the Rise
CANCER
Vitamin D May Improve Melanoma Survival
Herb May Counter Liver Damage From Chemo
Asthmatics Who Quit Smoking May Reverse Lung Damage
CAREGIVING
Simpler Sleep Apnea Treatment Seems Effective, Affordable
Diabetes Epidemic Now Poses Challenges for Nursing Homes
Moms Who Breast-Feed Less Likely to Neglect Child
CIRCULATORY SYSTEM
Bye, Bye Back Fat?
Secondhand Smoke Quickly Affects Blood Vessels
Common Antioxidant Might Slow Parkinson's
COSMETIC
The Acne Drug Accutane More Than Doubles Depression Risk
Health Tip: After Liposuction
Wrinkle Fillers Need Better Label Warnings: FDA Panel
DENTAL, ORAL
Acupuncture May Ease Anxiety Over Dental Work
Gum Disease May Reactivate AIDS Virus
Toothbrushing May Stave Off Heart Woes
DIABETES
Drug May Not Help Diabetes-Related Eye Damage
Findings Challenge Tight Glucose Control for Critically Ill Patients
Boosting Vitamin D Can Do a Heart Good
DIET, NUTRITION
The Food Irradiation Story
Vitamin B12 Key to Aging Brain
Common Antioxidant Might Slow Parkinson's
DISABILITIES
Could Your Cell Phone Help Shield You From Alzheimer's?
Review Finds Marijuana May Help MS Patients
ENVIRONMENTAL HEALTH
Are Medical Meetings Environmentally Unfriendly?
Preparing for a Chlorine Gas Disaster
Pilots May Face Greater Cancer Risk
EYE CARE, VISION
Stem Cells Repair Damaged Corneas in Mice
Diabetic Hispanics Missing Out on Eye Exams
When Gauging Age, the Eyes Have It
FITNESS
Tai Chi and Qigong Offer Many Health Benefits: Review
Any Exercise Good After a Heart Attack
Have Fun This Summer, But DO Be Careful
GASTROINTESTINAL PROBLEMS
Bowel Prep Harder on Women Than Men
Intestinal Bacteria Trigger Immune Response
Olive Oil May Protect Against Bowel Disease
GENERAL HEALTH
Swine Flu Is Now a Pandemic Says W.H.O.
Coffee Cuts Liver Scarring in Hepatitis C
Potassium-Rich Foods May Cut Stroke, Heart Disease Risk
HEAD & NECK
Ski Helmets Encouraged for All
Zen May Thicken Brain, Thwart Pain
Many Children Will Outgrow Headaches
HEALTH & TECHNOLOGY
Airport Full Body Scanners Pose No Health Threat: Experts
Study Suggests Link Between Cell Phones and Brain Tumors
E-Mailing Your Way to Healthier Habits
HEARING
Noise Hurts Men's Hearing More, Study Shows
Summer Sounds Can Lead to Hearing Loss
HEART & CARDIOVASCULAR
Lack of Vitamin D Linked to High Blood Pressure
Years of Heavy Smoking Raises Heart Risks
Most Fast-Food French Fries Cooked in Unhealthiest Oil
INFECTIOUS DISEASE
Dry Weather Boosts Odds of Flu Outbreaks
Swine Flu Closes Three Schools in NYC
Grapefruit Compound Inhibits Hepatitis C Virus
INFERTILITY
Obesity May Affect Fertility in Young Womene
KID'S HEALTH
Safety Should Be Priority for Those Involved in Kids' Sports
Music of Mozart Soothes the Preemie Baby
Dangerous Toys Still on Store Shelves, Report Finds
MEN'S HEALTH
Low Iron Levels Cut Cancer Risk in Men With PAD
Soy Linked to Low Sperm Count
Exercise May Prevent Prostate Cancer: Study Shows
MENTAL HEALTH
Green Spaces Boost the Body and the Mind
Worries About Weight Are Tied to Teen Suicide Tries
Chocolate a Sweet Pick-Me-Up for the Depressed
PAIN
Alleviating Rheumatoid Arthritis
Tai Chi May Help Ease Fibromyalgia
'Cell Phone Elbow' -- A New Ill for the Wired Age
PHYSICAL THERAPY
PREGNANCY
Woman in America Are Delaying Motherhood, Study Says
Prenatal Stress May Boost Baby's Asthma Risk
Exercise As Well As Acupuncture, May Ease Polycystic Ovarian Syndrome
SENIORS
Rapid Weight Loss in Seniors Signals Higher Dementia Risk
15-Point Test Gauges Alzheimer's Risk
Video Gaming Just Might Fight Aging
SEXUAL HEALTH
SLEEP DISORDERS
Lose Weight, Sleep Apnea May Improve
Sleeping Could Help Women Lose The Baby Fat
Meditation May Help Put Primary Insomnia to Bed
WOMEN'S HEALTH
Acupuncture May Help Relieve Polycystic Ovary Syndrome
Omega-3 May Reduce Endometriosis Risk
Postmenopausal Women With Breast Cancer Face Joint Issues
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B Cells Can Act Alone in Autoimmune Diseases

THURSDAY, Aug. 7 (HealthDay News) -- B cells may be more responsible for causing autoimmune diseases like lupus or rheumatoid arthritis than initially thought, according to a new study.

The finding, published in the Aug. 7 online issue of the journal Immunity, may give scientists a new path to pursue in finding ways to stop the immune system's chronic attacks on the body's own tissue during these diseases.

B cells, the source of damaging auto-antibodies, have long been thought to remain quiet in autoimmune diseases unless they are given a kick-start by T-cells. Researchers from Yale and Boston universities had found that toll-like receptors recognize and react to "self" molecules, in particular mammalian DNA and RNA. When this occurs, these receptors help activate B cells that make the classical auto-antibodies of lupus.

These signals, like those from T-cells, start the autoimmune process in B cells. In the new study, the researchers theorize that once activated in this way, the B cells can subsequently recruit T-cells. This creates a "vicious cycle" of chronic autoimmune disease in which the two types of cell prod each other into action.

The findings could explain why autoimmune-disease treatments aimed at T-cells have not done as well as those targeting B cells, the researchers said.

More information

The U.S. National Library of Medicine has more about autoimmune diseases.



-- Kevin McKeever



SOURCE: Yale University, news release, Aug. 7, 2008

Last Updated: Aug. 07, 2008

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