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Sifalimumab
Sifalimumab is a human monoclonal antibody designed for the treatment of SLE, dermatomyositis, and polymyositis. It targets interferon a. Sifalimumab was developed by MedImmune; as of 2017 development had been terminated in favor of moving a competing internal product, anifrolumab Anifrolumab, sold under the brand name Saphnelo, is a monoclonal antibody used for the treatment of systemic lupus erythematosus (SLE). It binds to the type I interferon receptor, blocking the activity of type I interferons such as interferon ..., into Phase III trials. References Monoclonal antibodies AstraZeneca brands {{antineoplastic-drug-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fab Fragment
The fragment antigen-binding region (Fab region) is a region on an antibody that binds to antigens. It is composed of one constant and one variable domain of each of the heavy and the light chain. The variable domain contains the paratope (the antigen-binding site), comprising a set of complementarity-determining regions, at the amino terminal end of the monomer. Each arm of the Y thus binds an epitope on the antigen. Preparation In an experimental setting, Fc and Fab fragments can be generated in the laboratory. The enzyme papain can be used to cleave an immunoglobulin monomer into two Fab fragments and an Fc fragment. Conversely, the enzyme pepsin cleaves below the hinge region, so the result instead is a F(ab')2 fragment and a pFc' fragment. Recently another enzyme for generation of F(ab')2 has been commercially available. The enzyme IdeS (Immunoglobulin degrading enzyme from '' Streptococcus pyogenes'', trade name FabRICATOR) cleaves IgG in a sequence specific mann ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interferon Alfa
Interferon alfa (INN) or HuIFN-alpha-Le, trade name Multiferon, is a pharmaceutical drug composed of natural interferon alpha (IFN-α), obtained from the leukocyte fraction of human blood following induction with Sendai virus. Interferon alfa contains several naturally occurring IFN-α subtypes and is purified by affinity chromatography. Although the pharmaceutical product is often simply called "interferon alpha" or "IFN-α" like its endogenous counterpart, the product's International nonproprietary name (INN) is interferon alfa (the spelling of 'alfa' with 'f' reflects INN naming conventions). Interferon alfa is used in a variety of treatments, including certain forms of leukemia, malignant melanoma, non-Hodgkin's lymphoma, hepatitis B, and hepatitis C It is typically administered as an injection under the skin. Composition Interferon alfa contains a mixture of several proteins, all with structural, serological, and functional properties typical for natural interferon alp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Systemic Lupus Erythematosus
Lupus, technically known as systemic lupus erythematosus (SLE), is an autoimmune disease in which the body's immune system mistakenly attacks healthy tissue in many parts of the body. Symptoms vary among people and may be mild to severe. Common symptoms include painful and swollen joints, fever, chest pain, hair loss, mouth ulcers, swollen lymph nodes, feeling tired, and a red rash which is most commonly on the face. Often there are periods of illness, called flares, and periods of remission during which there are few symptoms. The cause of SLE is not clear. It is thought to involve a mixture of genetics combined with environmental factors. Among identical twins, if one is affected there is a 24% chance the other one will also develop the disease. Female sex hormones, sunlight, smoking, vitamin D deficiency, and certain infections are also believed to increase a person's risk. The mechanism involves an immune response by autoantibodies against a person's own tiss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dermatomyositis
Dermatomyositis (DM) is a long-term inflammatory disorder which affects skin and the muscles. Its symptoms are generally a skin rash and worsening muscle weakness over time. These may occur suddenly or develop over months. Other symptoms may include weight loss, fever, lung inflammation, or light sensitivity. Complications may include calcium deposits in muscles or skin. The cause is unknown. Theories include that it is an autoimmune disease or a result of a viral infection. Dermatomyositis may develop as a paraneoplastic syndrome associated with several forms of malignancy. It is a type of inflammatory myopathy. Diagnosis is typically based on some combination of symptoms, blood tests, electromyography, and muscle biopsies. While no cure for the condition is known, treatments generally improve symptoms. Treatments may include medication, physical therapy, exercise, heat therapy, orthotics and assistive devices, and rest. Medications in the corticosteroids family are t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polymyositis
Polymyositis (PM) is a type of chronic inflammation of the muscles ( inflammatory myopathy) related to dermatomyositis and inclusion body myositis. Its name means "inflammation of many muscles" (''poly-'' + '' myos-'' + ''-itis''). The inflammation of polymyositis is mainly found in the endomysial layer of skeletal muscle, whereas dermatomyositis is characterized primarily by inflammation of the perimysial layer of skeletal muscles. Signs and symptoms The hallmark of polymyositis is weakness and/or loss of muscle mass in the proximal musculature, as well as flexion of the neck and torso. These symptoms can be associated with marked pain in these areas as well. The hip extensors are often severely affected, leading to particular difficulty in climbing stairs and rising from a seated position. The skin involvement of dermatomyositis is absent in polymyositis. Dysphagia (difficulty swallowing) or other problems with esophageal motility occur in as many as 1/3 of patients. Low gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Medical Association
The American Medical Association (AMA) is a professional association and lobbying group of physicians and medical students. Founded in 1847, it is headquartered in Chicago, Illinois. Membership was approximately 240,000 in 2016. The AMA's stated mission is "to promote the art and science of medicine and the betterment of public health." The Association also publishes the '' Journal of the American Medical Association'' (JAMA). The AMA also publishes a list of Physician Specialty Codes which are the standard method in the U.S. for identifying physician and practice specialties. The American Medical Association is governed by a House of Delegates as well as a board of trustees in addition to executive management. The organization maintains the AMA Code of Medical Ethics, and the AMA Physician Masterfile containing data on United States Physicians. The ''Current Procedural Terminology'' coding system was first published in 1966 and is maintained by the Association. It has also p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MedImmune
MedImmune, LLC was a wholly owned subsidiary of AstraZeneca before February 14, 2019, when it was announced that the MedImmune name and branding would be discontinued in favor of AstraZeneca. MedImmune was founded in 1988 as Molecular Vaccines, Inc, and was purchased in 2007 for $15.6 billion. Its main offices were located in Gaithersburg, MD, Cambridge, UK, and Mountain View, CA. It produced ''Synagis'', a drug for the prevention of respiratory infections in infants, which accounted for US$ 1.06 billion of its US$ 1.2 billion in revenue for 2005, and '' FluMist'', a nasal spray influenza vaccine introduced in 2004. MedImmune acquired ''FluMist'' when it purchased Aviron in 2002 for US$ 1.5 billion. ''FluMist'' sales totaled US$ 104 million in 2008, US$ 54.8 million in 2007, and US$ 36.4 million in 2006. ''FluMist'' was approved for children two years of age and older in 2007, but initially was approved only for healthy people ages 5 to 49, a significant limitation bec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anifrolumab
Anifrolumab, sold under the brand name Saphnelo, is a monoclonal antibody used for the treatment of systemic lupus erythematosus (SLE). It binds to the type I interferon receptor, blocking the activity of type I interferons such as interferon-α and interferon-β. Anifrolumab was approved for medical use in the United States in July 2021, and in the European Union in February 2022. The U.S. Food and Drug Administration considers it to be a first-in-class medication. Mechanism of Action In systemic lupus erythematosus, the body can produce a great amount of type 1 interferon, which activates the immune system excessively and creates problems for lupus patients. Anifrolumab acts to block INF-1 from sending signals to other immune cells, which prevents the body from being attacked by itself. Adverse effects The most common adverse effect was shingles, which occurred in 5% of patients in the low-dose group, to 10% in the high-dose group, and to 2% in the placebo group. Overall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monoclonal Antibodies
A monoclonal antibody (mAb, more rarely called moAb) is an antibody produced from a cell Lineage made by cloning a unique white blood cell. All subsequent antibodies derived this way trace back to a unique parent cell. Monoclonal antibodies can have monovalent affinity, binding only to the same epitope (the part of an antigen that is recognized by the antibody). In contrast, polyclonal antibodies bind to multiple epitopes and are usually made by several different antibody-secreting plasma cell lineages. Bispecific monoclonal antibodies can also be engineered, by increasing the therapeutic targets of one monoclonal antibody to two epitopes. It is possible to produce monoclonal antibodies that specifically bind to virtually any suitable substance; they can then serve to detect or purify it. This capability has become an investigative tool in biochemistry, molecular biology, and medicine. Monoclonal antibodies are being used on a clinical level for both the diagnosis and therap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
