Histamine release on rat pleural and peritoneal mast cells elicited by human GRF(1-29)NH2.
Estévez. M D MD; Botana. M A MA; Arnáez. E E; Vieytes. M R MR; Botana. L M LM
Key Findings
- Human GRF(1‑29)NH2 triggers histamine release from rat peritoneal and pleural mast cells.
- The release is strongest at 37 °C (body temperature) and is reduced by the mitochondrial inhibitor antimycin A.
- Purifying the mast cells with Percoll slightly lowers the histamine response.
Practical Outcomes
- For biohackers using GRF‑1‑29, be aware it may activate mast cells and cause histamine‑related side effects like itching or flushing, especially at normal body temperature. No direct dosing guidance emerges, but the data suggest monitoring for allergic‑type reactions when experimenting with this peptide.
Summary
The study shows that the peptide GRF‑1‑29 can make rat mast cells release histamine, especially at body temperature, and this effect can be blocked by certain chemicals. The findings are from rat cells and don’t directly tell us what happens in humans.
Abstract
We have studied the release of histamine elicited by human GRF(1-29)NH2 on rat peritoneal and pleural mast cells. The secretion is temperature dependent, the release being optimal at 37 degrees C, and it can be inhibited with antimycin A. The activation of pleural and peritoneal mast cells is similar, but there is a slight inhibition for both populations after purification with Percoll.
Study Information
pubmed
1993
10.1159/000236392
3