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 30 PubMed articles · model: gemma4:31b
Summary
Hevea brasiliensis, known as the Pará rubber tree, is the primary global commercial source of natural rubber (NR) [PMID:31200808, PMID:32228045].
Background
Hevea brasiliensis is a member of the Euphorbiaceae family and a native Amazonian species [PMID:23375136, PMID:37937626]. It is an industrial crop cultivated in approximately 40 countries to produce natural rubber, a hydrocarbon polymer primarily composed of cis-1,4-polyisoprene [PMID:17033060, PMID:32228045].
Active compounds
The plant produces natural rubber (cis-1,4-polyisoprene) [PMID:34517831]. Its latex contains proteins such as hevein (the most abundant soluble protein at 22%), prohevein, and hevamine [PMID:27317253, PMID:8521185]. Hevamine is a lysozyme/chitinase belonging to the family 18 or h-type chitinases [PMID:8765295].
Mechanism of action
Hevein is a lectin with a chitin-binding motif that exhibits antifungal properties [PMID:27317253]. Hevamine exhibits lysozyme and chitinase activity with a pH optimum around 4.5-5.0 [PMID:8765295]. Natural rubber latex has been shown to induce tissue repair by enhancing the vasculogenesis process and recruiting cells responsible for osteogenesis [PMID:34082943].
Clinical evidence
Evidence CTissue repair and drug delivery
Natural rubber latex is biocompatible and can act as a solid matrix for controlled drug release and enhance tissue repair [PMID:34082943]
Evidence CLatex Allergy
Exposure to natural latex from H. brasiliensis can cause allergic reactions ranging from mild contact dermatitis to anaphylaxis, particularly in high-risk groups such as healthcare workers and patients with spina bifida [PMID:9447217, PMID:8124422]
Safety & adverse effects
Natural rubber latex is a potent source of allergenic proteins [PMID:24925405]. Prohevein and hevamine have been identified as major latex allergens [PMID:8521185]. Sensitization can lead to immediate type hypersensitivity reactions, and symptoms may progress rapidly to anaphylaxis [PMID:9447217, PMID:24925405].
Evidence summary
The available evidence consists primarily of reviews and laboratory-based genomic or proteomic studies. There is strong evidence regarding the allergenic potential of the latex (Review/Case Reports) and its industrial application, but no clinical trial data for therapeutic use of the herb itself.
PubMed sources
- 1.PMID: 8765295 (1996) — Plant lysozymes. · EXS
- 2.PMID: 9447217 (1998) — Latex allergy. · American family physician
- 3.PMID: 31200808 (2019) — Genomic technologies for Hevea breeding. · Advances in genetics
- 4.PMID: 17033060 (2006) — Rubber Tree (Hevea brasiliensis Muell. Arg). · Methods in molecular biology (Clifton, N.J.)
- 5.PMID: 34082943 (2021) — Biomedical applications of natural rubber latex from the rubber tree Hevea brasiliensis. · Materials science & engineering. C, Materials for biological applications
- 6.PMID: 34517831