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Concept
Infliximab
Summary
Infliximab, a chimeric monoclonal antibody, sold under the brand name Remicade among others, is a medication used to treat a number of autoimmune diseases. This includes Crohn's disease, ulcerative colitis, rheumatoid arthritis, ankylosing spondylitis, psoriasis, psoriatic arthritis, and Behçet's disease. It is given by slow injection into a vein, typically at six- to eight-week intervals.
Common side effects include infections, acute infusion reactions, and abdominal pain. Infliximab is a chimeric monoclonal antibody biologic. It seems to work by binding to and neutralizing TNF-α, preventing it from interacting with its receptors on the cell. TNF-α is a chemical messenger (cytokine) and a key part of the autoimmune reaction.
Infliximab was originally developed in mice as a mouse antibody. Because humans have immune reactions to mouse proteins, the mouse common domains were replaced with similar human antibody domains. They are monoclonal antibodies and have identical structures and affinities to the target. Because they are a combination of mouse and human antibody amino acid sequences, they are called a "chimeric monoclonal antibody".
Infliximab was approved for medical use in the United States in 1998, and in the European Union in August 1999. Infliximab biosimilars have been approved in the EU (2013), in Japan (2014), and in the United States (2016, 2017, 2019). It is on the World Health Organization's List of Essential Medicines.
Three phenotypes, or categories of disease, are present in Crohn's disease: stricturing disease (which causes narrowing of the bowel), penetrating disease (which causes fistulae or abnormal connections of the bowel), and inflammatory disease (which primarily causes inflammation).
Infliximab was first used for closure of fistulae in Crohn's disease in 1999. In a 94-patient, phase II clinical trial, the researchers showed Infliximab was effective in closing fistulae between the skin and bowel in 56–68% of patients.
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Ontological neighbourhood
Related concepts (20)
Adalimumab
Adalimumab, sold under the brand name Humira, among others, is a monoclonal antibody used to treat rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, Crohn's disease, ulcerative colitis, plaque psoriasis, hidradenitis suppurativa, uveitis, and juvenile idiopathic arthritis. It is administered by subcutaneous injection (injection under the skin). Common side effects include upper respiratory tract infections, pain at the site of injection, rash, and headache.
Biopharmaceutical
A biopharmaceutical, also known as a biological medical product, or biologic, is any pharmaceutical drug product manufactured in, extracted from, or semisynthesized from biological sources. Different from totally synthesized pharmaceuticals, they include vaccines, whole blood, blood components, allergenics, somatic cells, gene therapies, tissues, recombinant therapeutic protein, and living medicines used in cell therapy. Biologics can be composed of sugars, proteins, nucleic acids, or complex combinations of these substances, or may be living cells or tissues.
Ankylosing spondylitis
Ankylosing spondylitis (AS) is a type of arthritis characterized by long-term inflammation of the joints of the spine typically where the spine joins the pelvis. Occasionally areas affected may include other joints such as the shoulders or hips. Eye and bowel problems may occur as well as back pain. Joint mobility in the affected areas generally worsens over time. Although the cause of ankylosing spondylitis is unknown, it is believed to involve a combination of genetic and environmental factors.