| 词条 | Uncaria tomentosa |
| 释义 |
|image = |regnum = Plantae |unranked_divisio = Angiosperms |unranked_classis = Eudicots |unranked_ordo = Asterids |ordo = Gentianales |familia = Rubiaceae |genus = Uncaria |species = U. tomentosa |binomial = Uncaria tomentosa |binomial_authority = (Willd. ex Schult.) DC.[1] }}Uncaria tomentosa is a woody vine found in the tropical jungles of South and Central America. It is known as cat's claw or uña de gato in Spanish because of its claw-shaped thorns.[1][2] The plant root bark is used in herbalism for a variety of ailments, and is sold as a dietary supplement.[2][3][4] DescriptionUncaria tomentosa is a liana deriving its name from hook-like thorns that resemble the claws of a cat.[2][4] U. tomentosa can grow to a length of up to 30 m (100 ft), climbing by means of these thorns.[1] The leaves are elliptic with a smooth edge, and grow in opposing pairs. Cat's claw is indigenous to the Amazon rainforest, with its habitat being restricted primarily to the tropical areas of South and Central America.[1]TaxonomyThere are two species of cat's claw commonly used in North America and Europe, Uncaria tomentosa and Uncaria guianensis, having different properties and uses.[4] The two are frequently confused but U. tomentosa is the more commonly used in traditional medicine.[5][6] U. tomentosa is further divided into two chemotypes that remain under preliminary research for their properties and compounds.[7] There are other plants which are known as cat's claw (or uña de gato) in Mexico and Latin America; however, they are entirely different plant species, belonging to neither the genus Uncaria, nor to the family Rubiaceae.[4][6] PhytochemicalsPhytochemicals in Uncaria tomentosa root bark include oxindole and indole alkaloids, glycosides, organic acids, proanthocyanidins, sterols, and triterpenes.[3][6]Traditional medicineCat's claw has been used as a traditional medicine in South American countries over centuries for its supposed health benefits, and is a common herbal supplement.[2][4][6] The part used medicinally is the bark of the vine or root.[2] As of 2018, there is no high-quality clinical research to support its use as a medicine.[2][3] There is no clinical evidence that it has anti-inflammatory, anticancer, or immune system properties.[3][6] Adverse reactionsIndividuals allergic to plants in the family Rubiaceae and different species of Uncaria may be more likely to have adverse reactions to cat's claw.[4][6] Reactions can include itching, rash and allergic inflammation of the kidneys. People requiring anticoagulant therapy should not use cat's claw.[2][6] See also
References1. ^1 2 3 {{GRIN | accessdate=2008-03-01}} 2. ^1 2 3 4 5 6 {{cite web | title=Cat's claw | publisher=Drugs.com | date=7 June 2018 | url=https://www.drugs.com/npc/cat-s-claw.html | accessdate=11 January 2019}} 3. ^1 2 3 {{cite web |title=Assessment report on Uncaria tomentosa (Willd. ex Schult.) DC., cortex |url=https://www.ema.europa.eu/documents/herbal-report/draft-assessment-report-uncaria-tomentosa-willd-ex-schult-dc-cortex_en.pdf |publisher=European Medicines Agency |accessdate=11 January 2019 |date=10 March 2015}} 4. ^1 2 3 4 5 {{cite web | title=Cat's claw: Uncaria tomentosa (Willd.) DC.; Uncaria guianensis (Aubl.) Gmel. | publisher=American Botanical Council | date=30 January 2018 | url=http://cms.herbalgram.org/ABCGuide/Monographs/CatsClaw.html?ts=1547220468&signature=30214db69c3aafb5f28ce26a6c2ceac9 | accessdate=11 January 2019}} 5. ^{{ cite journal |vauthors=Gattuso M, di Sapio O, Gattuso S, Pereyra LE | title = Morphoanatomical Studies of Uncaria tomentosa and Uncaria guianensis Bark and Leaves | journal = Phytomedicine | year = 2004 | volume = 11 | issue = 2–3 | pages = 213–223 | pmid = 15070175 | doi = 10.1078/0944-7113-00315 }} 6. ^1 2 3 4 5 6 {{cite web|url=http://www.mdanderson.org/education-and-research/resources-for-professionals/clinical-tools-and-resources/cimer/therapies/herbal-plant-biologic-therapies/cats-claw-scientific.html|archive-url=https://web.archive.org/web/20130826144058/http://www.mdanderson.org/education-and-research/resources-for-professionals/clinical-tools-and-resources/cimer/therapies/herbal-plant-biologic-therapies/cats-claw-scientific.html|dead-url=yes|archive-date=26 August 2013|date=31 May 2006|publisher=M.D. Anderson Center|title= Detailed Scientific Review of Cat's Claw (archived)|accessdate=10 January 2019}} 7. ^{{ cite journal |vauthors=Keplinger K, Laus G, Wurm M, Dierich MP, Teppner H | title = Uncaria tomentosa (Willd.) DC. — Ethnomedicinal Use and New Pharmacological, Toxicological and Botanical Results | journal = Journal of Ethnopharmacology | year = 1999 | volume = 64 | issue = 1 | pages = 23–34 | pmid = 10075119 | doi = 10.1016/S0378-8741(98)00096-8 | url = http://www.samento.com.ec/sciencelib/sarticles/Uncaria81B4.pdf | format = PDF }} External links{{Commons category|Uncaria tomentosa}}
11 : Uncaria|Flora of Central America|Flora of Trinidad and Tobago|Flora of French Guiana|Flora of Guyana|Flora of Suriname|Flora of Venezuela|Flora of Colombia|Flora of Ecuador|Flora of Peru|Medicinal plants |
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