Why the test is used: Anti-Ro is found in anywhere from 24% to 60% of lupus patients. It's also found in 70% of people with another autoimmune disorder called Sjögren's syndrome. Anti-La is found in 35% of people with Sjögren's syndrome. For this reason, their presence may be useful in diagnosing one of these disorders. Both antibodies are associated with neonatal lupus, a rare but potentially serious problem in newborns. In pregnant women, a positive Anti-Ro(SSA) or Anti-La(SSB) warns doctors of the need to monitor the unborn baby.
The gene is the basic physical unit of inheritance. Genes are passed from parents to offspring and contain the information needed to specify traits. Genes are arranged, one after another, on structures called chromosomes. A chromosome contains a single, long DNA molecule, only a portion of which corresponds to a single gene. Humans have approximately 20,000 genes arranged on their chromosomes.
ANA screening yields positive results in many connective tissue disorders and other autoimmune diseases, and may occur in normal individuals. Subtypes of antinuclear antibodies include anti-Smith and anti-double stranded DNA (dsDNA) antibodies (which are linked to SLE) and anti-histone antibodies (which are linked to drug-induced lupus). Anti-dsDNA antibodies are highly specific for SLE; they are present in 70% of cases, whereas they appear in only 0.5% of people without SLE. The anti-dsDNA antibody titers also tend to reflect disease activity, although not in all cases. Other ANA that may occur in people with SLE are anti-U1 RNP (which also appears in systemic sclerosis and mixed connective tissue disease), SS-A (or anti-Ro) and SS-B (or anti-La; both of which are more common in Sjögren's syndrome). SS-A and SS-B confer a specific risk for heart conduction block in neonatal lupus.
The severity of lupus varies from mild to life threatening. Kidney problems and neurologic complications are more dangerous than the rashes, arthritis or other symptoms. After many years of having lupus, patients may develop hypertension (high blood pressure), accelerated atherosclerosis (plaque and fat build-up in the arteries), heart and lung diseases, kidney failure or osteoporosis. With proper treatment, the majority of people diagnosed with lupus have a normal life expectancy, but many will experience disabilities. Each patient will likely have his or her own specific pattern of symptoms and flares, but the disease can change over time.
SLE-associated skin manifestations can sometimes lead to scarring. In discoid lupus, only the skin is typically involved. The skin rash in discoid lupus often is found on the face and scalp. It usually is red and may have raised borders. Discoid lupus rashes are usually painless and do not itch, but scarring can cause permanent hair loss (alopecia). Over time, 5%-10% of those with discoid lupus may develop SLE.
Landmark research has shown clearly that oral contraceptives do not increase the rate of flares of systemic lupus erythematosus. This important finding is opposite to what has been thought for years. Now we can reassure women with lupus that if they take birth-control pills, they are not increasing their risk for lupus flares. Note: Birth-control pills or any estrogen medications are still be avoided by women who are at increased risk of blood clotting, such as women with lupus who have phospholipid antibodies (including cardiolipin antibody and lupus anticoagulant).
Genome-wide association studies (GWAS) revealed regions of linkage that were found on most chromosomes. These studies are useful in identifying the genes that may be responsible for complex diseases such as SLE. Candidate gene loci implicated with SLE include multiple alleles from the HLA region, Fc-gamma receptor, and complement component system. However, association does not prove that a specific form of a gene is responsible for the disease, as there may be other polymorphisms in the region that have a greater association effect. However, because the biological role of most genes are not completely understood, it can be difficult to attribute phenotypic traits to certain genetic polymorphisms. Since SLE is associated with so many genetic regions, it is likely an oligogenic trait, meaning that there are several genes that control susceptibility to the disease. Further complicating our understanding is the association of certain linkages with various ethnic groups.
The immune system must balance between being sensitive enough to protect against infection, and become sensitized to attack the body's own proteins (autoimmunity). During an immune reaction to a foreign stimulus, such as bacteria, virus, or allergen, immune cells that would normally be deactivated due to their affinity for self-tissues can be abnormally activated by signaling sequences of antigen-presenting cells. Thus triggers may include viruses, bacteria, allergens (IgE and other hypersensitivity), and can be aggravated by environmental stimulants such as ultraviolet light and certain drug reactions. These stimuli begin a reaction that leads to destruction of other cells in the body and exposure of their DNA, histones, and other proteins, particularly parts of the cell nucleus. The body's sensitized B-lymphocyte cells will now produce antibodies against these nuclear-related proteins. These antibodies clump into antibody-protein complexes which stick to surfaces and damage blood vessels in critical areas of the body, such as the glomeruli of the kidney; these antibody attacks are the cause of SLE. Researchers are now identifying the individual genes, the proteins they produce, and their role in the immune system. Each protein is a link on the autoimmune chain, and researchers are trying to find drugs to break each of those links.
This diet is not intended for weight loss (although that can be a side effect). The anti-inflammatory diet is intended to provide steady energy, plenty of vitamins and minerals, and the essential fatty acids needed to maintain optimum health. You could look at this more like an eating plan for life as opposed to a diet per se. It is based on the general concept that eating to avoid inflammation promotes better health and can ward off diseases. According to Dr. Andrew Weil, the Harvard trained natural and preventative medicine physician (as seen on Oprah, and the Dr. Oz show,) there is clear evidence to support that inflammation can be very damaging to the body and he therefore openly supports the Anti-Inflammatory Diet. “We all know inflammation on the surface of the body as local redness, heat, swelling and pain. It is the cornerstone of the body’s healing response, bringing more nourishment and more immune activity to a site of injury or infection. But when inflammation persists or serves no purpose, it damages the body and causes illness. Stress, lack of exercise, genetic predisposition, and exposure to toxins (like secondhand tobacco smoke) can all contribute to such chronic inflammation, but dietary choices play a big role as well.” Both he and Barry Sears, MD, the author of the well-known Zone Diet both agree that this diet can have significant positive results on many diseases. Here are the basics of the anti-inflammatory diet (all versions vary, but this is the general proposal for all:
Only one population-based screening study13 of systemic lupus erythematosus was identified. This study reported a prevalence of 200 cases per 100,000 women (18 to 65 years of age) in England. One review14 estimated the overall U.S. prevalence of definite systemic lupus erythematosus plus incomplete systemic lupus erythematosus (disease meeting only some diagnostic requirements for systemic lupus erythematosus) to be 40 to 50 cases per 100,000 persons.
An adverse event that results in death, is life-threatening, requires inpatient hospitalization or extends a current hospital stay, results in an ongoing or significant incapacity or interferes substantially with normal life functions, or causes a congenital anomaly or birth defect. Medical events that do not result in death, are not life-threatening, or do not require hospitalization may be considered serious adverse events if they put the participant in danger or require medical or surgical intervention to prevent one of the results listed above.
Symptoms, causes, and treatment of chronic kidney disease Chronic kidney disease or failure is a progressive loss of kidney function that sometimes occurs over many years. Often the symptoms are not noticeable until the disease is well advanced, so it is essential that people who are at risk of developing kidney problems, such as those with diabetes, have regular check-ups. Read now
Rheumatologists have long been concerned that the female hormone estrogen or treatment with estrogen may cause or worsen lupus. Recent research showed that estrogen therapy can trigger some mild or moderate flares of lupus, but does not cause symptoms to get much worse. Yet, estrogen can raise the risk of blood clots. Thus, you should not take estrogen if your blood tests show antiphospholipid antibodies (meaning you already have a high risk of blood clots).
Soy products. Soy products are high in a type of estrogen called phytoestrogen, and estrogen is known to be a risk factor for lupus. In animal studies, researchers noted that a diet high in soy seemed to make lupus symptoms worse. Although there is no definitive evidence that soy products cause lupus symptoms, you should be cautious about including large amounts of soy in your diet.
Skin . Skin problems are a common feature of lupus. Some people with lupus have a red rash over their cheeks and the bridge of their nose -- called a "butterfly" or malar rash. Hair loss and mouth sores are also common. One particular type of lupus that generally affects only the skin is called "discoid lupus." With this type of lupus, the skin problems consist of large red, circular rashes that may scar. Skin rashes are usually aggravated by sunlight. A common lupus rash called subacute cutaneous lupus erythematosus is often worse after exposure to the sun. This type of rash can affect the arms, legs, and torso. An uncommon but serious form of lupus rash results in the development of large blisters and is called a "bullous" lupus rash.
Lyme disease is caused by the bacterium Borrelia burgdorferi and is transmitted to humans through the bite of infected blacklegged ticks. Typical symptoms include fever, headache, fatigue, and a characteristic skin rash called erythema migraines. If left untreated, infection can spread to joints, the heart, and the nervous system. Lyme disease is diagnosed based on symptoms, physical findings (e.g., rash), and the possibility of exposure to infected ticks; laboratory testing is helpful if used correctly and performed with validated methods. Most cases of Lyme disease can be treated successfully with a few weeks of antibiotics. Steps to prevent Lyme disease include using insect repellent, removing ticks promptly, applying pesticides, and reducing tick habitat. The ticks that transmit Lyme disease can occasionally transmit other tickborne diseases as well.
Erythrocyte sedimentation rate. This blood test determines the rate at which red blood cells settle to the bottom of a tube in an hour. A faster than normal rate may indicate a systemic disease, such as lupus. The sedimentation rate isn't specific for any one disease. It may be elevated if you have lupus, an infection, another inflammatory condition or cancer.
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