Inflammation of the kidneys caused by an autoimmune disease called systemic lupus erythematosus. The condition can cause hematuria and proteinuria, and it may progress to end-stage renal disease. The most severe form of lupus nephritis, called diffuse proliferative nephritis, can cause scars to form in the kidneys. Scars are permanent, and kidney function often declines as more scars form. Early diagnosis and treatment may help prevent long-lasting damage.
Kidney involvement in people with lupus is potentially life threatening and may occur in up to half of lupus patients. Kidney problems may become apparent when lupus patients feel ill with arthritis, have a rash, fever and weight loss. Less often, kidney disease may occur when there are no other symptoms of lupus. Kidney disease itself usually does not produce symptoms until it is in the advanced stages. It is important that kidney disease be diagnosed early and treated appropriately. The earliest signs of kidney disease are apparent from a urinalysis.
No single finding qualifies an individual as having SLE. Instead, the American College of Rheumatology (ACR) has devised certain classification criteria, and four or more of these criteria must be present for a classification of lupus. [The term “classification” is not synonymous with “diagnosis.” “Classification” means that reasonable certainty exists for the diagnosis of lupus for research purposes.] Although, these criteria are currently being updated, they are believed to be about 90% effective. The ACR criteria include malar rash; discoid rash; photosensitivity (development of a rash after sun exposure); oral or nasal ulcers; arthritis of multiple joints; serositis: (inflammation of the lining around the lungs or heart); kidney disease indicated by protein or casts in the urine; neurological disorders such as seizures and psychosis; and blood disorders such as hemolytic anemia, leukopenia, and lymphopenia. Other signs that are common but not included in the classification criteria are hair loss or breaking, especially around the forehead, and Raynaud’s Phenomenon, a two- or three-color change of the fingertips upon cold exposure.
However, three placebo-controlled studies, including the Exploratory Phase II/III SLE Evaluation of Rituximab [EXPLORER] trial and the Lupus Nephritis Assessment with Rituximab [LUNAR] trial, [124, 125] failed to show an overall significant response. Despite the negative results in these trials, rituximab continues to be used to treat patients with severe SLE disease that is refractory to standard therapy.
The symptoms involved in CREST syndrome are associated with the generalized form of the disease Systemic sclerosis (scleroderma). CREST is an acronym for the clinical features that are seen in a patient with this disease. The “C” stands for calcinosis, where calcium deposits form under the skin on the fingers or other areas of the body. The “R”, stands for Raynaud’s phenomenon, spasm of blood vessels in the fingers or toes in response to cold or stress. The “E” represents esophageal dysmotility, which can cause difficulty in swallowing. The “S” is for sclerodactyly, tightening of the skin causing the fingers to bend. Finally, the letter “T” is for telangiectasia, dilated vessels on the skin of the fingers, face, or inside of the mouth.
Although no one symptom qualifies someone as having lupus, certain clinical techniques can be used to narrow down the diagnosis. For example, a test for antinuclear antibodies (ANAs) in the blood is probably the first tool a physician will use. A positive ANA test does not necessarily mean that someone has lupus; in fact, one out of five normal women has a positive ANA. However, a negative ANA test greatly reduces the suspicion.
While most infants born to mothers who have SLE are healthy, pregnant mothers with SLE should remain under medical care until delivery. Neonatal lupus is rare, but identification of mothers at highest risk for complications allows for prompt treatment before or after birth. In addition, SLE can flare up during pregnancy, and proper treatment can maintain the health of the mother longer. Women pregnant and known to have anti-Ro (SSA) or anti-La antibodies (SSB) often have echocardiograms during the 16th and 30th weeks of pregnancy to monitor the health of the heart and surrounding vasculature.
Collagen is the major insoluble fibrous protein in the extracellular matrix and in connective tissue. In fact, it is the single most abundant protein in the animal kingdom. There are at least 16 types of collagen, but 80 – 90 percent of the collagen in the body consists of types I, II, and III. These collagen molecules pack together to form long thin fibrils of similar structure. Type IV, in contrast, forms a two-dimensional reticulum; several other types associate with fibril-type collagens, linking them to each other or to other matrix components. At one time it was thought that all collagens were secreted by fibroblasts in connective tissue, but we now know that numerous epithelial cells make certain types of collagens. The various collagens and the structures they form all serve the same purpose, to help tissues withstand stretching.
Lupus is an incredibly complex autoimmune disease and diagnosing lupus can take a lot of time and many doctor visits. Patients will often get diagnosed with other “overlap” diseases such as rheumadoid arthritis (RA), Sjogren’s Syndrome, scleroderma, fibromyalgia or Raynaud’s Phenomenon even before a diagnosis of lupus is made. This can be incredibly frustrating for you as well as your doctors. Understanding the process of getting a lupus diagnosis is one of the most common questions we get here as well as a main topic in the discussions on our Facebook page and our other social media platforms. The goal of this blog is to give a clear understanding of the diagnosis process and provide the tools needed to go back to your doctor (or a new doctor) armed with the information you need.
It is important to not just rely on supplements to help improve your symptoms, as both diet and supplements together are important. Supplements are unregulated, so the quality and content may vary widely. You may need to take up to several doses per day of supplements to get the same effect that is in the food. Always try and consume the food before looking into supplements. Again, speak with your doctor.
A diet high in folic acid, such as found in leafy green vegetables, fruits, and fortified breads and cereals, or a folic acid supplement is important if you are taking methotrexate (Rheumatrex). For nausea caused by medications, eat small frequent meals and foods that are easy to digest. Try dry cereals, breads, and crackers. Also avoid greasy, spicy, and acidic foods.
The underlying trigger to develop these antibodies in lupus is unknown, although experts believe that a combination of genetic, environmental, and possibly hormonal factors are involved. The fact that lupus can run in families suggests that there is a genetic basis for its development, but so far no single “lupus gene” has been identified. Experts suspect that several different genes may be involved in determining an individual’s chance of developing the disease, as well as which tissues and organs are affected, and how severe the disease will be if it does occur. Other factors being investigated as contributing to the onset of lupus are overexposure to sunlight, stress, certain drugs, and viruses and other infectious agents.
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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