Plant Extracts That Protect the Body's Natural Pain-Relieving Peptides
California poppy and Corydalis extracts prevented enzymatic breakdown of enkephalin pain-relieving peptides, suggesting a mechanism for traditional pain uses.
Quick Facts
What This Study Found
Eschscholtzia californica and Corydalis cava extracts inhibited peroxidase- and tyrosinase-mediated dimerization and oxidation of enkephalin peptides.
Key Numbers
How They Did This
In vitro assays measuring enzymatic dimerization and oxidation of met-enkephalin and leu-enkephalin in the presence or absence of plant extracts. Alkaloid content of extracts characterized.
Why This Research Matters
These plants have long traditions in herbal medicine for pain and anxiety. This study provides a potential biochemical mechanism: protecting natural opioid peptides from breakdown.
The Bigger Picture
Rather than adding external opioids, these plants may work by protecting the body's own opioid peptides from breakdown — a fundamentally different approach to pain management that could have fewer side effects than opioid drugs.
What This Study Doesn't Tell Us
In vitro study only. The plant extract concentrations tested may not be achievable in the body through oral consumption. Many other compounds in these extracts have their own effects.
Questions This Raises
- ?Can these plant extracts achieve protective concentrations in the brain after oral consumption?
- ?Which specific alkaloids in these extracts are responsible for the enkephalin-protecting effects?
Trust & Context
- Key Stat:
- 2 plant species California poppy and Corydalis both protected enkephalins from enzymatic breakdown
- Evidence Grade:
- Preliminary — in vitro enzyme inhibition study. Does not demonstrate that this mechanism operates in living organisms after oral consumption.
- Study Age:
- Published in 1995. Interest in natural enkephalinase inhibitors has continued, though clinical evidence for these specific plants remains limited.
- Original Title:
- Effects of ethanolic extracts from Eschscholtzia californica and Corydalis cava on dimerization and oxidation of enkephalins.
- Published In:
- Arzneimittel-Forschung, 45(2), 132-6 (1995)
- Authors:
- Reimeier, C, Schneider, I, Schneider, W, Schäfer, H L, Elstner, E F
- Database ID:
- RPEP-00340
Evidence Hierarchy
Frequently Asked Questions
How might these plants reduce pain naturally?
Instead of adding opioids, these plant extracts may protect your body's own pain-relieving enkephalin peptides from being broken down by enzymes, allowing them to work longer.
Can I use these plants for pain relief?
While the biochemical mechanism is plausible, this was an in vitro study. Whether drinking California poppy tea achieves sufficient concentrations in the brain to protect enkephalins is unproven.
Read More on RethinkPeptides
Cite This Study
https://rethinkpeptides.com/research/RPEP-00340APA
Reimeier, C; Schneider, I; Schneider, W; Schäfer, H L; Elstner, E F. (1995). Effects of ethanolic extracts from Eschscholtzia californica and Corydalis cava on dimerization and oxidation of enkephalins.. Arzneimittel-Forschung, 45(2), 132-6.
MLA
Reimeier, C, et al. "Effects of ethanolic extracts from Eschscholtzia californica and Corydalis cava on dimerization and oxidation of enkephalins.." Arzneimittel-Forschung, 1995.
RethinkPeptides
RethinkPeptides Research Database. "Effects of ethanolic extracts from Eschscholtzia californica..." RPEP-00340. Retrieved from https://rethinkpeptides.com/research/reimeier-1995-effects-of-ethanolic-extracts
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkPeptides research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.