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Cette fiche a été compilée à partir de résumés PubMed (NIH) avec l'assistance d'une IA. Chaque affirmation factuelle est citée par un article PubMed réel (voir la liste des sources). Elle n'a pas encore été révisée par un humain — confirmez auprès d'un professionnel de santé avant utilisation.
Compilé à partir de 29 articles PubMed · modèle : gemma4:31b
Résumé
Gobernadora (Larrea tridentata), also known as creosote bush or chaparral, is a North American desert shrub used in traditional medicine for various ailments [PMID: 20424564, PMID: 36080156]. It is recognized for its antioxidant properties but is associated with significant risks of hepatotoxicity [PMID: 31643676, PMID: 9129552].
Contexte
Larrea tridentata is a perennial, aromatic evergreen shrub dominant in the deserts of North America, specifically northern Mexico and the southwestern United States [PMID: 34315376, PMID: 36080156, PMID: 27445827].
Usages traditionnels
Traditional uses include the treatment of infertility, rheumatism, arthritis, colds, diarrhea, skin problems, pain, inflammation, excess body weight, diabetes, and gallbladder and kidney stones [PMID: 36080156, PMID: 15814253, PMID: 27445827].
Composés actifs
The primary metabolite is nordihydroguaiaretic acid (NDGA) [PMID: 34315376, PMID: 20424564]. Other compounds include furanoid lignans such as 4-epi-larreatricin [PMID: 31643676], meso-dihydroguaiaretic acid [PMID: 21583141], and various simple bisphenyl and tricyclic lignans [PMID: 26151022].
Mécanisme d'action
NDGA acts as a scavenger of reactive oxygen species, inhibits lipoxygenases (LOX), and activates the endogenous antioxidant response via the nuclear factor erythroid 2-related factor 2 (NRF2) pathway [PMID: 34315376, PMID: 25100573]. In tumor cells, it may exert pro-apoptotic activity and inhibit SP1 dependent gene transcription [PMID: 25100573, PMID: 26151022].
Preuves cliniques
Preuve DHepatotoxicity
Ingestion of chaparral is linked to clinically apparent liver injury, including cholestatic hepatitis, jaundice, and acute liver failure requiring transplantation [PMID: 31643676, PMID: 9129552, PMID: 7806838, PMID: 7733101]
Preuve DMetabolic Syndrome (Animal Model)
Ethanolic extract reduced insulin resistance, serum insulin, and plasma/hepatic lipids in hamsters fed a high fat and cholesterol diet [PMID: 27445827]
Preuve DGallstones (Animal Model)
Dry ethanolic extract inhibited gallstone formation and reduced gallbladder bile cholesterol concentration in hamsters [PMID: 16105230]
Sécurité et effets indésirables
The herb is associated with severe hepatotoxicity, including cholestasis and hepatocellular injury [PMID: 11352118, PMID: 7806838]. Chronic use of NDGA is reported to cause renal and hepatic toxicity [PMID: 15814253, PMID: 31642411]. Topical application or burning the bush has been linked to contact dermatitis [PMID: 3950120].
Synthèse des preuves
Evidence consists primarily of case reports of toxicity (Level D), animal studies (Level D), and literature reviews (Level C). There is a strong signal for hepatotoxicity in humans, while therapeutic claims are largely based on traditional use or animal models.
2.PMID: 10948380 (2000) — Hepatotoxicity of botanicals. · Public health nutrition
3.PMID: 34315376 (2021) — Larrea tridentata and its Biological Activities. · Current topics in medicinal chemistry
4.PMID: 11327523 (2001) — The safety of low-dose Larrea tridentata (DC) Coville (creosote bush or chaparral): a retrospective clinical study. · Journal of alternative and complementary medicine (New York, N.Y.)
5.PMID: 36080156 (2022) — Phytochemical Compounds and Pharmacological Properties of Larrea tridentata.
Sources gouvernementales
Aucune monographie gouvernementale directe n'est disponible pour cette plante. Le contenu ci-dessous est généré par IA et n'a pas été vérifié par rapport à une source gouvernementale faisant autorité. Utilisez les liens de recherche pour consulter les sources officielles avant de vous fier à ces informations.
9.PMID: 20424564 (2010) — Molecular mechanisms and clinical applications of nordihydroguaiaretic acid (NDGA) and its derivatives: an update. · Medical science monitor : international medical journal of experimental and clinical research
10.PMID: 31072049 (2019) — Creosote Bush (Larrea tridentata) Extract Assessment as a Green Antioxidant for Biodiesel. · Molecules (Basel, Switzerland)
11.PMID: 15814253 (2005) — Larrea tridentata (Creosote bush), an abundant plant of Mexican and US-American deserts and its metabolite nordihydroguaiaretic acid. · Journal of ethnopharmacology
13.PMID: 27445827 (2016) — Creosote Bush (Larrea tridentata) Improves Insulin Sensitivity and Reduces Plasma and Hepatic Lipids in Hamsters Fed a High Fat and Cholesterol Diet. · Frontiers in pharmacology
14.PMID: 26151022 (2015) — Creosote bush lignans for human disease treatment and prevention: Perspectives on combination therapy. · Journal of traditional and complementary medicine
15.PMID: 31642411 (2020) — Nordihydroguaiaretic Acid in Therapeutics: Beneficial to Toxicity Profiles and the Search for its Analogs. · Current cancer drug targets
16.PMID: 3950120 (1986) — Contact dermatitis from Larrea (creosote bush). · Journal of the American Academy of Dermatology
17.PMID: 7806838 (1994) — Cholestatic hepatitis after ingestion of chaparral leaf: confirmation by endoscopic retrograde cholangiopancreatography and liver biopsy. · Journal of clinical gastroenterology
18.PMID: 16105230 (2005) — Effect of Larrea tridentata (creosote bush) on cholesterol gallstones and bile secretion in hamsters. · The Journal of pharmacy and pharmacology
19.PMID: 35684556 (2022) — nor 3'-Demethoxyisoguaiacin from Larrea tridentata Is a Potential Alternative against Multidrug-Resistant Bacteria Associated with Bovine Mastitis. · Molecules (Basel, Switzerland)
20.PMID: 12960376 (2003) — (+)-Larreatricin hydroxylase, an enantio-specific polyphenol oxidase from the creosote bush (Larrea tridentata). · Proceedings of the National Academy of Sciences of the United States of America
21.PMID: 7733101 (1995) — Chaparral-induced hepatic injury. · The American journal of gastroenterology
22.PMID: 10030529 (1999) — Unsafe and potentially safe herbal therapies. · American journal of health-system pharmacy : AJHP : official journal of the American Society of Health-System Pharmacists
23.PMID: 25100573 (2014) — Paradoxical cellular effects and biological role of the multifaceted compound nordihydroguaiaretic acid. · Archiv der Pharmazie