Glyprolines and semax prevent stress-induced microcirculatory disturbances in the mesentery.
Kopylova. G N GN; Smirnova. E A EA; Sanzhieva. L Ts LTs; Umarova. B A BA; Lelekova. T V TV; Samonina. G E GE
Key Findings
- Immobilization stress severely disrupts mesenteric microcirculation, causing flow loss and hemorrhages.
- Pre‑treatment with Semax reduces the severity of these stress‑induced microcirculatory problems.
- Glyproline peptides PGP and GP are the most effective at protecting gut microcirculation in this model.
Practical Outcomes
- Semax may offer some protection against acute stress‑related gut blood‑flow issues, suggesting a potential use as a pre‑stress supplement. However, the data come from animal experiments, dosage and timing for humans are unclear, and more research is needed before recommending it for everyday biohacking protocols.
Summary
A short study found that a stressful event can mess up tiny blood vessels in the gut, causing reduced flow and bleeding, but giving the peptide Semax (and related short proteins called glyprolines) an hour before the stress helped keep the vessels working better, especially the versions PGP and GP.
Abstract
One-hour immobilization stress considerably disturbed microcirculation in the mesentery: blood flow in small mesenteric vessels decreased or stopped and numerous hemorrhages appeared. Lymphatic vessels lost spontaneous activity and did not respond to norepinephrine. Administration of Semax and glyprolines 1 h before stress decreased the severity of stress-induced microcirculatory disturbances. PGP and GP were most effective in this respect.
Study Information
pubmed
2003
10.1023/b:bebm.0000017087.90585.a9