Fish Skin Collagen Peptides Block Blood Clot Formation Without Causing Bleeding
Three small peptides (GPR, GPRG, GPRGP) from silver carp skin collagen survived digestion, inhibited platelet aggregation, and prevented clot formation without causing bleeding in mice.
Quick Facts
What This Study Found
Peptides GPR, GPRG, and GPRGP from fish collagen resisted GI digestion, were absorbed by Caco-2 cells, and inhibited platelet aggregation (IC50: 0.160-0.917 mg/ml) without bleeding risk.
Key Numbers
GPR/GPRG/GPRGP; ADP IC50 0.160-0.283 mg/mL; thrombin IC50 0.714-1.008 mg/mL; survived GI digestion; Caco-2 absorbed; no mouse bleeding
How They Did This
Simulated gastrointestinal digestion stability; Caco-2 intestinal absorption model; ADP- and thrombin-induced platelet aggregation assays; platelet thrombus formation time; coagulation cascade analysis; mouse bleeding safety test.
Why This Research Matters
Blood clots cause heart attacks and strokes. A dietary supplement from fish skin collagen that prevents clotting without bleeding risk could be a safe preventive option for at-risk populations.
The Bigger Picture
Bioactive peptides from food waste (fish skin) represent a sustainable source of functional health ingredients. Anti-thrombotic peptides from collagen could complement conventional blood thinners with a better safety profile.
What This Study Doesn't Tell Us
In vitro bioavailability model (not in vivo absorption); IC50 values relatively high for oral dosing; mouse bleeding test not a comprehensive safety study; no human data.
Questions This Raises
- ?What oral dose of collagen hydrolysate would achieve anti-platelet concentrations in human blood?
- ?Would these peptides interact with prescribed blood thinners like aspirin or warfarin?
- ?Can the peptides be concentrated to achieve therapeutic levels in a practical supplement dose?
Trust & Context
- Key Stat:
- No bleeding risk Collagen hydrolysate with anti-platelet peptides showed no bleeding side effects in mice despite anti-clotting activity
- Evidence Grade:
- Preliminary — in vitro bioavailability and activity data with mouse safety check, but no human clinical evidence.
- Study Age:
- Published in 2020; fish-derived bioactive peptides remain an active nutraceutical research area.
- Original Title:
- The in vitro bioavailability of anti-platelet peptides in collagen hydrolysate from silver carp (Hypophthalmichthys molitrix) skin.
- Published In:
- Journal of food biochemistry, 44(6), e13226 (2020)
- Database ID:
- RPEP-04952
Evidence Hierarchy
Frequently Asked Questions
How do fish skin peptides prevent blood clots?
The peptides block platelets from clumping together and slow down the coagulation cascade — two key steps in clot formation — without completely shutting down the system like some drugs do.
Can I take these instead of blood thinners?
No. These are potential supplements, not drug replacements. They showed modest anti-clotting activity suitable for prevention in at-risk people, not treatment of existing clotting disorders.
Read More on RethinkPeptides
Cite This Study
https://rethinkpeptides.com/research/RPEP-04952APA
Li, Yuqi; Wang, Bo; Li, Bo. (2020). The in vitro bioavailability of anti-platelet peptides in collagen hydrolysate from silver carp (Hypophthalmichthys molitrix) skin.. Journal of food biochemistry, 44(6), e13226. https://doi.org/10.1111/jfbc.13226
MLA
Li, Yuqi, et al. "The in vitro bioavailability of anti-platelet peptides in collagen hydrolysate from silver carp (Hypophthalmichthys molitrix) skin.." Journal of food biochemistry, 2020. https://doi.org/10.1111/jfbc.13226
RethinkPeptides
RethinkPeptides Research Database. "The in vitro bioavailability of anti-platelet peptides in co..." RPEP-04952. Retrieved from https://rethinkpeptides.com/research/li-2020-the-in-vitro-bioavailability
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.