How does Gentiana macrophylla work to reduce inflammation?

Gentiana macrophylla exerts anti-inflammatory effects primarily through its iridoid glycosides, particularly gentiopicroside and swertiamarin. These compounds have demonstrated the ability to inhibit pro-inflammatory mediators and modulate immune cell activity in laboratory studies. Additionally, xanthones present in the root contribute antioxidant properties that may further reduce oxidative stress associated with inflammation. This mechanism supports its traditional use for rheumatic conditions and 'wind-dampness' disorders. Evidence Level: B.

Can Gentiana macrophylla be taken with prescription medications?

There are currently no established drug interactions for Gentiana macrophylla in clinical literature. However, caution is advised when combining it with immunosuppressants or anti-rheumatic medications, as additive effects are theoretically possible. The herb's bitter constituents may also affect gastric motility and absorption of oral medications. Patients taking prescription drugs should consult a healthcare provider before adding Gentiana macrophylla to their regimen. Evidence Level: C.

What is the correct dosage of Gentiana macrophylla for adults?

The typical adult dosage of Gentiana macrophylla is 3-9 grams of dried root daily, usually prepared as a decoction. For standardized extracts, 500mg taken twice daily is commonly recommended. Dosage may vary depending on the specific condition being treated and whether the herb is used alone or in a TCM formula combination. Users should follow product-specific instructions or seek guidance from a qualified practitioner. Evidence Level: Traditional.

Is Gentiana macrophylla safe to use during pregnancy?

Gentiana macrophylla is contraindicated during pregnancy and is considered unsafe for use by pregnant women. Traditional Chinese Medicine principles indicate that its bitter, cold nature may harm the developing fetus or stimulate uterine activity. There is insufficient safety data regarding its active compounds, including gentiopicroside, during pregnancy. Women who are pregnant or breastfeeding should avoid this herb entirely. Evidence Level: D.

Who should not take Gentiana macrophylla?

Gentiana macrophylla should be avoided by individuals with 'deficiency cold' patterns, characterized by cold extremities, pale complexion, and loose stools. It is also contraindicated for those experiencing active diarrhea, as the herb's bitter, cooling properties may worsen these symptoms. Pregnant women should not use this herb. People with sensitive stomachs may experience mild gastrointestinal discomfort. Consult a healthcare provider before use if you have chronic digestive conditions. Evidence Level: Traditional.

Gentiana Macrophylla (Gentiana macrophylla)

Fiche d'information compilée à partir de PubMed

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 30 articles PubMed · modèle : gemma4:31b

Résumé

Gentiana macrophylla, known as Qin-Jiao, is a perennial medicinal herb used primarily for its anti-inflammatory and hepatoprotective properties [PMID:30097114, PMID:37951561].

Contexte

Gentiana macrophylla Pall. is a perennial plant in the Gentianaceae family [PMID:33473838]. Its dried roots are used as a raw material for the traditional Chinese medicine known as Gentianae Macrophyllae Radix or Qin-Jiao [PMID:25280952, PMID:30097114].

Usages traditionnels

It has been used since ancient times in China to treat arthritis, stroke, facial paralysis, and scapulohumeral periarthritis [PMID:30097114]. It is also used to dispel wind-dampness, clear damp-heat, reduce false heat, and relieve arthralgia and pain [PMID:41203091]. In Tibetan medicine, it is used for rheumatic arthralgia and hepatopathy [PMID:37951561], and it has been used for centuries to treat systemic lupus erythematosus (SLE) [PMID:28060552].

Composés actifs

Dominant medicinal secondary metabolites include iridoids/secoiridoids such as gentiopicroside, loganic acid, swertiamarin, and sweroside [PMID:27144464, PMID:38262919]. Other identified compounds include roburic acid (a triterpenoid) [PMID:37500654, PMID:41740337], flavonoids [PMID:37993113], lignans [PMID:37951561], and various benzopyran glycosides [PMID:38403317].

Mécanisme d'action

Roburic acid may ameliorate rheumatoid arthritis by reprogramming M1 macrophages to the M2 phenotype [PMID:37500654] and may inhibit glucocorticoid-induced osteonecrosis of the femoral head by targeting PTP1B to inhibit osteoclast hyperactivity [PMID:41740337]. Gentiopicroside is reported to modulate the HMGB1-mediated PI3K/AKT signaling axis to reduce synovial inflammation and fibrosis [PMID:39764995]. Flavonoids from the herb may alleviate non-small cell lung cancer progression by decreasing circ_0059665 and suppressing M2 macrophage polarization under hypoxia [PMID:37993113].

Preuves cliniques

Preuve DRheumatoid Arthritis

Roburic acid delivered via nanocarriers significantly reduced inflammatory cytokine levels and promoted tissue repair in rat models [PMID:37500654].

Preuve DKnee Osteoarthritis (KOA)

Gentiopicroside ameliorated synovial inflammation and fibrosis in KOA rats [PMID:39764995].

Preuve DSystemic Lupus Erythematosus (SLE) / Liver Injury

Root extract significantly decreased B19-NS1-exacerbated liver inflammation by suppressing COX-2, IL-1β, and hepatic inducible nitric oxide synthase in NZB/W F1 mice [PMID:28060552].

Preuve DSystemic Lupus Erythematosus (SLE) / Cardiac Apoptosis

Root extract reduced cholesterol-aggravated apoptosis of the left ventricle in NZB/W F1 mice by suppressing intrinsic and extrinsic apoptotic pathways [PMID:25985203].

Preuve DHepatotoxicity

Compounds macrophylloside G and D showed hepatoprotective activity against D-GalN-induced AML12 cell damage [PMID:38403317].

Synthèse des preuves

The current evidence consists primarily of in vitro cell studies and in vivo animal models (rats and mice), indicating strong anti-inflammatory and hepatoprotective potential, but there is a lack of human clinical trial data.

Sources PubMed

1.PMID: 37500654 (2023) — Metabolic reprogramming of proinflammatory macrophages by target delivered roburic acid effectively ameliorates rheumatoid arthritis symptoms. · Signal transduction and targeted therapy
2.PMID: 38069821 (2023) — Network pharmacology identification and in vivo validation of key pharmacological pathways of Qin Jiao for gout and arthritis. · Pharmaceutical biology
3.PMID: 23506994 (2013) — Anti-inflammatory compounds of "Qin-Jiao", the roots of Gentiana dahurica (Gentianaceae). · Journal of ethnopharmacology
4.PMID: 38403317 (2024) — [A new benzopyran glycoside from Gentiana macrophylla]. · Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica
5.PMID: 37951561

Gentiana Macrophylla

Sources et citations

Tibetan Gentian

Gentiana Lutea Herb

Licorice Root TCM

Résumé

Contexte

Usages traditionnels

Composés actifs

Mécanisme d'action

Preuves cliniques

Synthèse des preuves

Sources PubMed

Sources gouvernementales

Gentiana Macrophylla

Sources et citations

Plantes associées

Tibetan Gentian

Gentiana Lutea Herb

Licorice Root TCM

Résumé

Contexte

Usages traditionnels

Composés actifs

Mécanisme d'action

Preuves cliniques

Synthèse des preuves

Sources PubMed

Sources gouvernementales