Treprostinil reduces endothelial damage in murine sinusoidal obstruction syndrome View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2019-02

AUTHORS

Madeleine Themanns, Florian Koban, Christian Bergmayr, Alicja Chrzan, Wolfgang Strohmaier, Johannes Haybaeck, Michael Freissmuth, Eva Zebedin-Brandl

ABSTRACT

Sinusoidal obstruction syndrome (SOS) is a major complication after hematopoietic stem cell transplantation and belongs to a group of diseases increasingly identified as transplant-related systemic endothelial disease. Administration of defibrotide affords some protection against SOS, but the effect is modest. Hence, there is unmet medical need justifying the preclinical search for alternative approaches. Prostaglandins exert protective actions on endothelial cells of various vascular beds. Here, we explored the therapeutic potential of the prostacyclin analog treprostinil to prevent SOS. Treprostinil acts via stimulation of IP, EP2, and EP4 receptors, which we detected in murine liver sinusoidal endothelial cells (LSECs). Busulfan-induced cell death was reduced when pretreated with treprostinil in vitro. In a murine in vivo model of SOS, concomitantly administered treprostinil caused lower liver weight-to-body weight ratios indicating liver protection. Histopathological changes were scored to assess damage to liver sinusoidal endothelial cells, to hepatocytes, and to the incipient fibrotic reaction. Treprostinil indeed reduced sinusoidal endothelial cell injury, but this did not translate into reduced liver cell necrosis or fibrosis. In summary, our observations provide evidence for a beneficial effect of treprostinil on damage to LSECs but unexpectedly treprostinil was revealed as a double-edged sword in SOS. KEY MESSAGES: Murine liver sinusoidal endothelial cells (LSECs) express prostanoid receptors. Treprostinil reduces busulfan-induced cell death in vitro. Treprostinil lowers liver weight-to-body weight ratios in mice. Treprostinil positively affects LSECs in mice but not hepatic necrosis/fibrosis. More... »

PAGES

1-13

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00109-018-1726-6

DOI

http://dx.doi.org/10.1007/s00109-018-1726-6

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1110448563

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/30535954


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41 schema:description Sinusoidal obstruction syndrome (SOS) is a major complication after hematopoietic stem cell transplantation and belongs to a group of diseases increasingly identified as transplant-related systemic endothelial disease. Administration of defibrotide affords some protection against SOS, but the effect is modest. Hence, there is unmet medical need justifying the preclinical search for alternative approaches. Prostaglandins exert protective actions on endothelial cells of various vascular beds. Here, we explored the therapeutic potential of the prostacyclin analog treprostinil to prevent SOS. Treprostinil acts via stimulation of IP, EP<sub>2</sub>, and EP<sub>4</sub> receptors, which we detected in murine liver sinusoidal endothelial cells (LSECs). Busulfan-induced cell death was reduced when pretreated with treprostinil in vitro. In a murine in vivo model of SOS, concomitantly administered treprostinil caused lower liver weight-to-body weight ratios indicating liver protection. Histopathological changes were scored to assess damage to liver sinusoidal endothelial cells, to hepatocytes, and to the incipient fibrotic reaction. Treprostinil indeed reduced sinusoidal endothelial cell injury, but this did not translate into reduced liver cell necrosis or fibrosis. In summary, our observations provide evidence for a beneficial effect of treprostinil on damage to LSECs but unexpectedly treprostinil was revealed as a double-edged sword in SOS. KEY MESSAGES: Murine liver sinusoidal endothelial cells (LSECs) express prostanoid receptors. Treprostinil reduces busulfan-induced cell death in vitro. Treprostinil lowers liver weight-to-body weight ratios in mice. Treprostinil positively affects LSECs in mice but not hepatic necrosis/fibrosis.
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