Tripterygium wilfordii | |
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Scientific classification ![]() | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Celastrales |
Family: | Celastraceae |
Genus: | Tripterygium |
Species: | T. wilfordii |
Binomial name | |
Tripterygium wilfordii | |
Tripterygium wilfordii, or léi gōng téng (Mandarin) (Chinese :雷公藤, Japanese: raikōtō), sometimes called thunder god vine but more properly translated thunder duke vine, is a vine used in traditional Chinese medicine.
Tripterygium wilfordii has been promoted for use in rheumatoid arthritis and psoriasis; however, due to safety concerns this use is not recommended. [1] Evidence is insufficient to deem it effective as a method of birth control for humans. [2] A 2021 study published in Nature found that one chemical isolated from the herb, triptonide, was an effective male birth control in mice and non-human primates, while others chemicals present in the herb have been previously shown to cause severe liver toxicity. [3] Extracts of the bark T. wilfordii have been used as an insecticide in China for centuries, [4] as documented in Wu Qijun’s 1848 Illustrated Catalogues of Plants. [5]
The United Kingdom government does not recommend the use of Tripterygium due to potential side effects. [1]
Evidence is lacking that Tripterygium is either safe or effective as a method of birth control in men. [2] Two trials found less sperm in people taking it for rheumatoid arthritis but these trials were observational in nature. [2] A 2021 study in the journal Nature found that triptonide, a chemical isolated from Tripterygium, was an effective birth control for male mice and male cynomolgus monkeys, but noted that other chemicals present in the plant cause severe toxicity, so consuming the herb or general extracts of the herb for birth control purposes is potentially dangerous. [3]
In China, T. wilfordii has historically been used as a treatment of rheumatoid arthritis (RA).[ citation needed ] The National Center for Complementary and Integrative Health has noted tentative evidence that T. wilfordii may improve some RA symptoms. [6] Serious side effects, however, occur frequently enough to make the risks of taking it higher than the possible benefits. [6]
Wilfortrine is a sesquiterpene alkaloid isolated from T. wilfordii. It has immunomodulatory effects. [7]
At medicinal doses, T. wilfordii extract can have significant side effects, [6] including immunosuppression.
In August 2011, the UK Medicines and Healthcare products Regulatory Agency published a drug safety bulletin advising consumers not to use medicines containing lei gong teng due to potentially serious side effects. [8]
China State Food and Drug Administration issued a warning in April 2012 about this medicine, urging caution. [9]
A 2016 review found gastrointestinal symptoms in 13%, adverse reproductive outcomes in 12%, adverse skin reactions in 8%, hematologic events in 6.5%, cardiovascular events in 5%. Also irregular menstruation OR=4.6. [10]
A 2011 review stated that although T. wilfordii has toxic potential, careful extraction gives an acceptable frequency of adverse reactions, which are largely related to the gastrointestinal tract and amenorrhea. The review found that T. wilfordii extract is useful remedy for postmenopausal rheumatoid arthritis. [11]
Celastrol, a pentacyclic triterpenoid, and triptolide, a diterpene triepoxide, are putative active components of the extracts derived from Tripterygium wilfordii. [12] Triptolide has pharmacological activities including anti-inflammatory, immune modulation, antiproliferative, and proapoptotic activity, but its clinical use is limited by severe toxicity. [13] The biological target of triptolide is believed to be the XPB subunit of the TFIIH protein complex (involved in DNA repair and transcription initiation). [14]
Tripfordines are bio-active sesquiterpene pyridine alkaloids of T. wilfordii. [15]
To aid the investigation of pathways related to celastrol, a reference genome of T. wilfordii was sequenced, producing a 340.12 Mb genome with 31,593 structural genes (35 of them, CYP genes involved in the synthesis of the alkaloid active ingredients). [16]
Rheumatoid arthritis (RA) is a long-term autoimmune disorder that primarily affects joints. It typically results in warm, swollen, and painful joints. Pain and stiffness often worsen following rest. Most commonly, the wrist and hands are involved, with the same joints typically involved on both sides of the body. The disease may also affect other parts of the body, including skin, eyes, lungs, heart, nerves and blood. This may result in a low red blood cell count, inflammation around the lungs, and inflammation around the heart. Fever and low energy may also be present. Often, symptoms come on gradually over weeks to months.
Methotrexate (MTX), formerly known as amethopterin, is a chemotherapy agent and immune-system suppressant. It is used to treat cancer, autoimmune diseases, and ectopic pregnancy and for medical abortions. Types of cancers it is used for include breast cancer, leukemia, lung cancer, lymphoma, gestational trophoblastic disease, and osteosarcoma. Types of autoimmune diseases it is used for include psoriasis, rheumatoid arthritis, and Crohn's disease. It can be given by mouth or by injection.
Herbal medicine is the study of pharmacognosy and the use of medicinal plants, which are a basis of traditional medicine. There is limited scientific evidence for the safety and efficacy of plants used in 21st century herbalism, which generally does not provide standards for purity or dosage. The scope of herbal medicine commonly includes fungal and bee products, as well as minerals, shells and certain animal parts. Herbal medicine is also called phytomedicine or phytotherapy.
Hepatotoxicity implies chemical-driven liver damage. Drug-induced liver injury is a cause of acute and chronic liver disease caused specifically by medications.
Petasites is a genus of flowering plants in the sunflower family, Asteraceae, that are commonly referred to as butterburs and coltsfoots. They are perennial plants with thick, creeping underground rhizomes and large rhubarb-like leaves during the growing season. Most species are native to Asia or southern Europe.
Tea tree oil, also known as melaleuca oil, is an essential oil with a fresh camphoraceous odor and a colour that ranges from pale yellow to nearly colourless and clear. It is derived from the leaves of the tea tree, Melaleuca alternifolia, native to southeast Queensland and the northeast coast of New South Wales, Australia. The oil comprises many constituent chemicals and its composition changes if it is exposed to air and oxidizes.
Medicinal plants, also called medicinal herbs, have been discovered and used in traditional medicine practices since prehistoric times. Plants synthesise hundreds of chemical compounds for functions including defence against insects, fungi, diseases, and herbivorous mammals. Numerous phytochemicals with potential or established biological activity have been identified. However, since a single plant contains widely diverse phytochemicals, the effects of using a whole plant as medicine are uncertain. Further, the phytochemical content and pharmacological actions, if any, of many plants having medicinal potential remain unassessed by rigorous scientific research to define efficacy and safety.
Male contraceptives, also known as male birth control, are methods of preventing pregnancy that solely involve the male physiology. The most common kinds of male contraception include condoms, outercourse, and vasectomy. In domestic animals, castration is commonly used for contraception. Other forms of male contraception are in various stages of research and development. These include methods like RISUG/VasalGel and ultrasound.
Saussurea is a genus of about 300 species of flowering plants in the thistle tribe within the daisy family, native to cool temperate and arctic regions of East Asia, Europe, and North America, with the highest diversity in alpine habitats in the Himalayas and East Asia. Common names include saw-wort and snow lotus, the latter used for a number of high altitude species in East Asia.
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Epigallocatechin gallate (EGCG), also known as epigallocatechin-3-gallate, is the ester of epigallocatechin and gallic acid, and is a type of catechin.
Yunnan Baiyao is a proprietary traditional Chinese medicine marketed and used as an alternative hemostatic product with use in both human and veterinary alternative medicine. The safety and efficacy of Yunnan Baiyao has not been assessed or established by the FDA, European Medicines Agency, or the Australian Therapeutic Goods Administration. There is limited evidence regarding its effectiveness in preventing and treating hemorrhagic and pathological conditions in both humans and animals via oral administration. In a limited number human studies of small sample sizes, administration of Yunnan Baiyao has been shown to correlate with "reduced perioperative bleeding as well as bleeding in various ulcerative–hemorrhagic conditions". There are multiple routes of drug administration. Yunnan Baiyao is sold in powder, tincture, plaster, paste, aerosol, or tablet form. The medicine, developed by Qu Huangzhang in 1902, is designated as one of two Class-1 protected traditional Chinese medicines which gives it 20 years of trade protection in China. Yunnan Baiyao products are manufactured and distributed by a state-owned enterprise, Yunnan Baiyao Group in Yunnan, China.
Higenamine (norcoclaurine) is a chemical compound found in a variety of plants including Nandina domestica (fruit), Aconitum carmichaelii (root), Asarum heterotropioides, Galium divaricatum, Annona squamosa, and Nelumbo nucifera.
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Tripterygium regelii, or Regel's threewingnut, is a rambling, shrubby perennial deciduous yellow vine native to Korea, Japan and Manchuria. It grows to about 200 centimetres (79 in). Small very pretty yellowish white or white flowers appear in May–June and are produced on 203–229 millimetres (8.0–9.0 in). long panicles, and smell somewhat of new-mown hay. Fruits are greenish white, 3-angled, and winged.
"Tripterygium wilfordii Hook.f., known as Leigongteng in traditional Chinese medicine, has attracted much attention for its applications in relieving autoimmune disorders such as rheumatoid arthritis and systemic lupus erythematosus, and for treating cancer. Molecular analyses of the ITS and 5S rDNA sequences indicate that T. hypoglaucum and T. doianum are not distinct from T. wilfordii, while T. regelii should be recognized as a separate species. The results also demonstrate potential value of rDNA sequence data in forensic detection of adulterants derived from Celastrus angulatus in commercial samples of Leigongteng."
Triptolide is a diterpenoid epoxide which is produced by the thunder god vine, Tripterygium wilfordii. It has in vitro and in vivo activities against mouse models of polycystic kidney disease and pancreatic cancer, but its physical properties and severe toxicity limit its therapeutic potential.
Celastrol (tripterine) is a chemical compound isolated from the root extracts of Tripterygium wilfordii and Tripterygium regelii. Celastrol is a pentacyclic nortriterpen quinone and belongs to the family of quinone methides. In mice, celastrol is an NR4A1 agonist that alleviates inflammation and induces autophagy. Also in mice, celastrol increase expression of IL1R1, which is the receptor for the cytokine interleukin-1 (IL-1). IL1R1 knock-out mice exposed to celastrol exhibit no leptin-sensitizing or anti-obesity effect.
Aconitum flavum is a species of flowering plant in the genus Aconitum of the family Ranunculaceae, native and endemic to northwestern Sichuan, northern Tibet, Qinghai, Gansu, southern Ningxia and southern Inner Mongolia.