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Concept
Colchicine
Summary
Colchicine is a medication used to treat gout and Behçet's disease. In gout, it is less preferred to NSAIDs or steroids. Other uses for colchicine include the management of pericarditis and familial Mediterranean fever. Colchicine is taken by mouth.
Colchicine has a narrow therapeutic index, so overdosing is a significant risk. Common side effects of colchicine include gastrointestinal upset, particularly at high doses. Severe side effects may include pancytopenia (low blood cell counts) and rhabdomyolysis, and the medication can be deadly in overdose. Whether colchicine is safe for use during pregnancy is unclear, but its use during breastfeeding appears to be safe. Colchicine works by decreasing inflammation via multiple mechanisms.
Colchicine, in the form of the autumn crocus (Colchicum autumnale), has been used as early as 1500 BC to treat joint swelling. It was approved for medical use in the United States in 1961. It is available as a generic medication. In 2020, it was the 241st most commonly prescribed medication in the United States, with more than 1 million prescriptions.
Colchicine is widely used in plant breeding for inducing polyploidy, where the number of chromosomes in plant cells are doubled. This frequently results in larger, hardier, faster-growing, and in general more desirable plants than the normally diploid parents.
Colchicine is an alternative for those unable to tolerate NSAIDs when treating gout. Low doses appear to be well tolerated and may reduce gout symptoms and pain (1.2 mg in one hour, followed by 0.6 mg an hour later). This low dose may have a similar effectiveness to NSAIDS. At high doses, side effects (primarily diarrhea, nausea, or vomiting) limit its use, however may be effective against pain. In addition, there is preliminary evidence that daily colchicine (0.6 mg twice daily) may be effective as a long-term prophylaxis when used with allopurinol to reduce the risk of increased uric acid levels and acute gout flares, although adverse gastrointestinal effects may occur.
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Related concepts (16)
Plant
Plants are eukaryotes, predominantly photosynthetic, that form the kingdom Plantae. Many are multicellular. Historically, the plant kingdom encompassed all living things that were not animals, and included algae and fungi. All current definitions exclude the fungi and some of the algae. By one definition, plants form the clade Viridiplantae (Latin for "green plants") which consists of the green algae and the embryophytes or land plants. The latter include hornworts, liverworts, mosses, lycophytes, ferns, conifers and other gymnosperms, and flowering plants.
Plant breeding
Plant breeding is the science of changing the traits of plants in order to produce desired characteristics. It has been used to improve the quality of nutrition in products for humans and animals. The goals of plant breeding are to produce crop varieties that boast unique and superior traits for a variety of applications. The most frequently addressed agricultural traits are those related to biotic and abiotic stress tolerance, grain or biomass yield, end-use quality characteristics such as taste or the concentrations of specific biological molecules (proteins, sugars, lipids, vitamins, fibers) and ease of processing (harvesting, milling, baking, malting, blending, etc.
Familial Mediterranean fever
Familial Mediterranean fever (FMF) is a hereditary inflammatory disorder. FMF is an autoinflammatory disease caused by mutations in Mediterranean fever gene, which encodes a 781–amino acid protein called pyrin. While all ethnic groups are susceptible to FMF, it usually occurs in people of Mediterranean origin—including Sephardic Jews, Mizrahi Jews, Ashkenazi Jews, Assyrians, Armenians, Azerbaijanis, Druze, Levantines, Kurds, Greeks, Turks and Italians.