Lupus is an autoimmune disease characterized by acute and chronic inflammation of various tissues of the body. Autoimmune diseases are illnesses that occur when the body's tissues are attacked by its own immune system. The immune system is a complex system within the body that is designed to fight infectious agents, such as bacteria and other foreign microbes. One of the ways that the immune system fights infections is by producing antibodies that bind to the microbes. People with lupus produce abnormal antibodies in their blood that target tissues within their own body rather than foreign infectious agents. These antibodies are referred to as autoantibodies.
Approximately 20% of people with SLE have clinically significant levels of antiphospholipid antibodies, which are associated with antiphospholipid syndrome. Antiphospholipid syndrome is also related to the onset of neural lupus symptoms in the brain. In this form of the disease the cause is very different from lupus: thromboses (blood clots or "sticky blood") form in blood vessels, which prove to be fatal if they move within the blood stream. If the thromboses migrate to the brain, they can potentially cause a stroke by blocking the blood supply to the brain.
An antibody, produced by B cells in response to an altered autoantigen on one type of the body’s own cells, that attacks and destroys these cells. Autoantibodies are the basis for autoimmune diseases such as rheumatoid arthritis and diabetes mellitus. Several theories exist about why autoantibodies are formed. The most common theory proposes that AAbs develop as the result of a combination of hereditary and environmental risk factors that cause an autoantigen to be falsely recognized as alien by B cells; as a result, antibodies are produced for its destruction.
Alfalfa seeds and sprouts, green beans, peanuts, soybeans, and snow peas contain a substance that has been shown to trigger lupus flare-ups in some patients (although not all). Negative reactions caused by these foods experienced by lupus patients can include antinuclear antibodies in the blood, muscle pains, fatigue, abnormal immune system function and kidney abnormality. These symptoms are believed to be caused by the amino acid L-canavanine. (7)
Why the test is used: Abnormalities in blood cell counts, including white blood cells and red blood cells, may occur in people with lupus. This may be related to the lupus, lupus treatments, or infection. For example, leukopenia, a decrease in the number of white blood cells, is found in about 50% of people with lupus. Thrombocytopenia, or a low platelet count, occurs in about 50% of people with lupus, as well. Doctors can use this test to monitor these potentially serious problems.
Arthritis is inflammation of one or more joints and it involves the breakdown of cartilage. Cartilage normally protects a joint, allowing it to move smoothly. Cartilage also absorbs shock when pressure is placed on the joint, such as when you walk. Without the normal amount of cartilage, the bones rub together, causing pain, swelling (inflammation), and stiffness. Usually the joint inflammation goes away after the cause goes away or is treated. Sometimes it does not. When this happens, you have chronic arthritis. Arthritis may occur in men or women. Osteoarthritis is the most common type.
A group of people who review, approve, and monitor the clinical study protocol. Their role is to protect the rights and welfare of human research subjects participating in a study. The group typically includes people with varying backgrounds, including a community member, to make sure that research activities conducted by an organization are completely and adequately reviewed. Also known as an institutional review board (IRB) or ethics committee.
The variety of symptoms that lupus can bring on can make it tough to spot. Another reason the disease can be difficult to identify is that some of its most common symptoms — such as fatigue, headaches, joint pain, swelling, and fever — occur in a lot of other illnesses, too. Lupus can imitate rheumatoid arthritis, blood disorders, fibromyalgia, diabetes, thyroid problems, and more, according to the Lupus Foundation of America. (1)
Lupus can cause problems with the blood, too, including anemia, or low red blood cell count. Anemia can cause symptoms such as weakness and fatigue. (14) Thrombocytopenia is another blood disorder that may develop, resulting in lower platelet counts. (Platelets are the blood cells that help the blood clot.) Symptoms of thrombocytopenia can include bruising easily, nosebleeds, and petechiae, when the blood appears as red pinpoints under the skin. (15)
Systemic lupus erythematosus (SLE), a complex and heterogeneous autoimmune disease, represents a significant challenge for both diagnosis and treatment. Patients with SLE in Latin America face special problems that should be considered when therapeutic guidelines are developed. The objective of the study is to develop clinical practice guidelines for Latin American patients with lupus. Two independent teams (rheumatologists with experience in lupus management and methodologists) had an initial meeting in Panama City, Panama, in April 2016. They selected a list of questions for the clinical problems most commonly seen in Latin American patients with SLE. These were addressed with the best available evidence and summarised in a standardised format following the Grading of Recommendations Assessment, Development and Evaluation approach. All preliminary findings were discussed in a second face-to-face meeting in Washington, DC, in November 2016. As a result, nine organ/system sections are presented with the main findings; an ‘overarching’ treatment approach was added. Special emphasis was made on regional implementation issues. Best pharmacologic options were examined for musculoskeletal, mucocutaneous, kidney, cardiac, pulmonary, neuropsychiatric, haematological manifestations and the antiphospholipid syndrome. The roles of main therapeutic options (ie, glucocorticoids, antimalarials, immunosuppressant agents, therapeutic plasma exchange, belimumab, rituximab, abatacept, low-dose aspirin and anticoagulants) were summarised in each section. In all cases, benefits and harms, certainty of the evidence, values and preferences, feasibility, acceptability and equity issues were considered to produce a recommendation with special focus on ethnic and socioeconomic aspects. Guidelines for Latin American patients with lupus have been developed and could be used in similar settings.
In the absence of systemic lupus erythematosus, the most common reason for a positive ANA test is the presence of another connective tissue disease. Diseases that often are associated with a positive ANA test include Sjögren's syndrome (68 percent of affected patients), scleroderma (40 to 75 percent), rheumatoid arthritis (25 to 50 percent), and juvenile rheumatoid arthritis (16 percent).20 An ANA test also can be positive in patients with fibromyalgia. In patients with diseases other than systemic lupus erythematosus, ANA titers usually are lower, and the immunofluorescent pattern is different.20
A healing lupus diet can help improve gut health in those with lupus by preventing allergies, reducing deficiencies and slowing down free radical damage. In fact, due to how autoimmune disorders develop, a low-processed lupus diet high in antioxidants is usually key for managing any autoimmune-related symptoms, including those due to arthritis, thyroid disorders, etc., which often overlap with lupus symptoms.
If cyclophosphamide doesn’t work for patients with lupus nephritis, they now have the option of trying another drug, and more options are being tested in clinical trials, says Dr. Caricchio. For example, doctors may use CellCept (mycophenolate mofetil), Imuran (azathioprine), or Restasis (cyclosporine). Prograf (tacrolimus) may also be an effective option for lupus nephritis, according to study data appearing in the January 2016 edition of Autoimmunity Reviews. (5)
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