Intravital Microscopy Evidence That Methylene Blue Should Be a Vasopressor-Sparing Agent in Sepsis Vasoplegia

Braz J Cardiovasc Surg. 2024 Apr 3;39(3):e20230066. doi: 10.21470/1678-9741-2023-0066.

Abstract

Microvasculature failure is expected in sepsis and at higher amine concentrations. Therefore, special attention focused individually on microcirculation is needed. Here, we present that methylene blue can prevent leukocytes from adhering to the endothelium in a rat model of lipopolysaccharide-induced endotoxemia. As hypothesis evidence, an intravital microscopy image is presented.

Keywords: Endothelium; Lipopolysaccharides; Methylene Blue; Microcirculation; Microvessels.

MeSH terms

  • Animals
  • Intravital Microscopy
  • Methylene Blue / pharmacology
  • Methylene Blue / therapeutic use
  • Rats
  • Sepsis* / drug therapy
  • Vasoconstrictor Agents
  • Vasoplegia* / drug therapy

Substances

  • Methylene Blue
  • Vasoconstrictor Agents