Effect of plasma-derived extracellular vesicles on erythrocyte deformability in polymicrobial sepsis

Kumar Subramani, Srikrishnan P. Raju, Xiaogang Chu, Marie Warren, Chirayukumar D Pandya, MD Nasrul Hoda, Sadanand T Fulzele, Raghavan Pillai Raju

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Sepsis affects microcirculation and tissue perfusion leading to tissue hypoxia and multiple organ dysfunction. Red blood cells (RBCs; erythrocytes) are typically biconcave in shape, transport hemoglobin-bound oxygen and are reversibly deformable facilitating trafficking through capillaries. Decreased deformability of RBCs adversely affects tissue oxygenation. The purpose of this project was to determine RBC deformability in a murine model of polymicrobial sepsis by a method that utilizes laser diffraction and microfluidics, and to identify the causative factors in the plasma that may contribute to loss in RBC deformability. Blood samples from mice subjected to cecal ligation and puncture (CLP) model of sepsis were used. RBC deformability was tested using Rheoscan-AnD 300 under shear stress range of 0–20 Pascal (Pa) that depicts the common rheological behavior of RBCs flowing through blood vessels ranging from major vessels to capillaries. Normal RBCs were treated with plasma-derived extracellular vesicles (EVs) and their effect on RBC deformability was also tested. The experiments demonstrated a significant decrease in RBC deformability following sepsis. RBC deformability recovered in sham-operated animals by the third day, whereas animals with sepsis continued to show decreased levels of deformability. EVs isolated from the plasma of animals from the sepsis group significantly decreased deformability of RBCs ex vivo. Analysis of miRNA cargo in EVs showed distinct molecular profiles for sham-operated and sepsis-induced mice. In summary, sepsis induced a decrease in RBC deformability and the acquired rigidity may have adverse effect on microcirculation, tissue perfusion, and organ function.

Original languageEnglish (US)
Pages (from-to)244-247
Number of pages4
JournalInternational Immunopharmacology
Volume65
DOIs
StatePublished - Dec 1 2018

Fingerprint

Erythrocyte Deformability
Sepsis
Microcirculation
Perfusion
Erythrocytes
Microfluidics
Extracellular Vesicles
MicroRNAs
Punctures
Ligation
Blood Vessels
Hemoglobins
Lasers
Oxygen

Keywords

  • Erythrocyte
  • Exosome
  • Rheology
  • Sepsis
  • Tissue perfusion

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology
  • Pharmacology

Cite this

Effect of plasma-derived extracellular vesicles on erythrocyte deformability in polymicrobial sepsis. / Subramani, Kumar; Raju, Srikrishnan P.; Chu, Xiaogang; Warren, Marie; Pandya, Chirayukumar D; Hoda, MD Nasrul; Fulzele, Sadanand T; Raju, Raghavan Pillai.

In: International Immunopharmacology, Vol. 65, 01.12.2018, p. 244-247.

Research output: Contribution to journalArticle

Subramani, Kumar ; Raju, Srikrishnan P. ; Chu, Xiaogang ; Warren, Marie ; Pandya, Chirayukumar D ; Hoda, MD Nasrul ; Fulzele, Sadanand T ; Raju, Raghavan Pillai. / Effect of plasma-derived extracellular vesicles on erythrocyte deformability in polymicrobial sepsis. In: International Immunopharmacology. 2018 ; Vol. 65. pp. 244-247.
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