The platelet strip. I. A low-fibrin contractile model of thrombin-activated platelets

L. Salganicoff, M. H. Loughnane, R. W. Sevy, M. Russo

Research output: Contribution to journalArticle

Abstract

The ultrastructure and contractile behavior of a new preparation of thrombin-activated human platelets is described. The preparation is referred to as the 'platelet strip' because of its similarities to classical vascular smooth muscle strips. The platelet strip consists of a giant platelet aggregate 10 mm long, 4 mm wide, and 200 μm thick. To facilitate handling, the aggregate has a special high-compliance nylon mesh embedded in its mass. Each strip contains 7.3 X 108 platelets. Fibrin contamination is 150-fold lower than in platelet-rich plasma clots. Active isometric forces of up to 100 g/cm2 and 6-10 h viability are easily and reproducibly obtained. Platelet strips remain contracted after thrombin activation. The contraction is tonic and partial. Further small increases in force can be produced by depolarizing solutions or pharmacological agents, e.g., ADP, epinephrine, and endoperoxide analogues. These small increases are reversible on washout of the agents. Full relaxation is induced by agents such as prostaglandin E1 or papaverine, which increase adenosine 3',5'-cyclic monophosphate. However, after washout of these agents, recovery of tension is variable depending on the concentration of the drug and the degree of prestretching of the preparation.

Original languageEnglish
JournalAmerican Journal of Physiology - Cell Physiology
Volume18
Issue number2
Publication statusPublished - 1985

Fingerprint

Platelets
Fibrin
Thrombin
Blood Platelets
Papaverine
Platelet-Rich Plasma
Alprostadil
Nylons
Vascular Smooth Muscle
Cyclic AMP
Adenosine Diphosphate
Epinephrine
Compliance
Muscle
Pharmacology
Contamination
Chemical activation
Plasmas
Recovery
Pharmaceutical Preparations

ASJC Scopus subject areas

  • Cell Biology
  • Clinical Biochemistry
  • Physiology

Cite this

The platelet strip. I. A low-fibrin contractile model of thrombin-activated platelets. / Salganicoff, L.; Loughnane, M. H.; Sevy, R. W.; Russo, M.

In: American Journal of Physiology - Cell Physiology, Vol. 18, No. 2, 1985.

Research output: Contribution to journalArticle

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