PubMed-compiled information sheet
This sheet was compiled from PubMed (NIH) abstracts using AI assistance. Every factual claim is cited to a real PubMed article (see the source list). It has not yet been human-reviewed — confirm with a healthcare provider before use.
Compiled from 19 PubMed articles · model: gemma4:31b
Summary
Chimaphila umbellata is a medicinal plant containing phenolics, sterols, and triterpenoids, notably the characteristic phytochemical chimaphilin [PMID:37359710].
Background
Chimaphila umbellata, also known as prince's pine or winter green, is a member of the Pyroleae tribe (Ericaceae) [PMID:37359710, PMID:3191678, PMID:17089139]. It exhibits partial mycoheterotrophy, meaning it acquires carbon through both photosynthesis and symbiotic mycorrhizal fungi [PMID:17089139, PMID:22108855].
Traditional uses
Folk medicine recommends the topical application of Chimaphila species leaves to treat skin diseases [PMID:3191678].
Active compounds
The plant contains phenolics, sterols, and triterpenoids [PMID:37359710]. Specific identified compounds include chimaphilin (2,7-dimethyl-1,4-naphthoquinone), which is its characteristic phytochemical [PMID:37359710, PMID:17950387], as well as 5-hydroxymethylfurfural, isohomoarbutin, methyl salicylate, and the naphthalene glycoside 2,7-dimethyl-1,4-dihydroxynaphthalene-1-O-β-D-glucopyranoside (DMDHNG) [PMID:37359710, PMID:25861914, PMID:5810257].
Mechanism of action
Chimaphilin acts as a complex I bypass factor in the mitochondrial oxidative phosphorylation system [PMID:27622560]. The compound DMDHNG inhibits RANKL-stimulated osteoclast differentiation by inhibiting TRAP activity and the mRNA expression of osteoclast-associated genes such as cathepsin K and nuclear factor of activated T-cells c1 [PMID:25861914]. Additionally, extracts have shown the ability to suppress superoxide anion (O2-) and hydroxyl radical (OH*) levels [PMID:17583488].
Clinical evidence
Evidence BBenign Prostatic Hyperplasia (BPH)
Chimaphila umbellata extract is a component of Eviprostat; a comparative study of Eviprostat and a higher-dose formulation (EVI-F) showed comparable changes in International Prostate Symptom Score (IPSS) and QOL scores [PMID:18634442].
Evidence DFungal Infections
Chimaphilin demonstrated antifungal activity against Saccharomyces cerevisiae, Malassezia globosa, and Malassezia restricta [PMID:17950387].
Safety & adverse effects
Chimaphilin is identified as a moderate contact sensitizer and has been linked to dermatitis and 'idiosyncrasy' [PMID:3191678].
Evidence summary
Evidence is primarily based on phytochemical reviews, in vitro laboratory studies, and one clinical trial involving a multi-herb formulation for BPH. There is a lack of standalone human clinical trials for the herb itself.
PubMed sources
- 1.PMID: 37359710 (2023) — Chimaphila umbellata; a biotechnological perspective on the coming-of-age prince's pine. · Phytochemistry reviews : proceedings of the Phytochemical Society of Europe
- 2.PMID: 17950387 (2008) — Antifungal and antioxidant activities of the phytomedicine pipsissewa, Chimaphila umbellata. · Phytochemistry
- 3.PMID: 25861914 (2015) — A new naphthalene glycoside from Chimaphila umbellata inhibits the RANKL-stimulated osteoclast differentiation. · Archives of pharmacal research
- 4.PMID: 3191678 (1988) — The sensitizing capacity of chimaphilin, a naturally-occurring quinone. · Contact dermatitis
- 5.PMID: 22108855 (2012) — Measuring carbon gains from fungal networks in understory plants from the tribe Pyroleae (Ericaceae): a field manipulation and stable isotope approach.