Oct 1, 1989

Substance P-induced augmentation of cutaneous vascular permeability and granulocyte infiltration in mice is mast cell dependent

The Journal of Clinical Investigation
H YanoS J Galli

Abstract

The undecapeptide substance P is thought to mediate both vasodilatation and augmented vascular permeability when released from sensory nerve endings in the skin. Substance P also induces mast cell degranulation in vitro or in vivo. However, the extent to which substance P-induced changes in vascular permeability are mast cell-dependent is unclear. We investigated this issue by injecting substance P and certain related peptides (substance P1-4, substance P4-11) into the skin of genetically mast cell-deficient WBB6F1-W/W or WCB6F1- SI/SId mice the congenic normal (+/+) mice, and W/W mice which had undergone selective local repair of their mast cell deficiency by intradermal injection of IL-3-dependent mast cells generated in vitro from the bone marrow cells of the congenic +/+ mice. Substance P induced significant augmentation of vascular permeability and significant cutaneous swelling when injected into normal mice at doses as low as 2 pmol i.d. Substance P also induced granulocyte infiltration, although the infiltrate were modest and were seen at doses of peptide from 5 to more than 20-fold higher than those required for induction of tissue swelling. The effects of substance P on tissue swelling, vascular permeability, and gran...Continue Reading

  • References18
  • Citations98
  • References18
  • Citations98

Mentioned in this Paper

IL3 gene
Mast Cell
Interleukin-3
AS 2
Tac1
Vascular Permeability
Infiltration
Interleukin-3 Binding Activity
Malnutrition
Granulocyte

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