Characterization of human platelet vascular permeability-enhancing activity. Academic Article uri icon

Overview

abstract

  • Human platelet acid extract obtained from both whole platelets and from isolated subcellular granules was partially purified by DEAE-cellulose chromatography and Sephadex gel filtration. The heat-stable, nondialyzable cationic protein fraction with a mol wt of approximately 30,000 produced a biphasic increase in vascular permeability in rabbit skin and also had antiheparin activity. The acute (15 min) increase in vascular permeability was blocked by prior treatment of the animal with antihistamine and was characterized histologically by edema of perivascular tissues and dilation of capillaries and veinules. The delayed (3 hr) permeability effect was not blocked by antihistamine and was characterized histologically by leukocytic infiltration into the skin. The experiments described suggest that human platelet lysosomal release of cationic proteins may increase vascular permeability by several mechanisms including endogenous histamine release as well as delayed chemotaxis.

publication date

  • March 1, 1972

Research

keywords

  • Blood Platelets
  • Blood Proteins
  • Blood Vessels
  • Histamine H1 Antagonists
  • Histamine Release

Identity

PubMed Central ID

  • PMC302160

Scopus Document Identifier

  • 0015310378

Digital Object Identifier (DOI)

  • 10.1172/JCI106843

PubMed ID

  • 4110899

Additional Document Info

volume

  • 51

issue

  • 3