Selective Sphingosine-1-Phosphate Receptor 1 Modulation Attenuates Experimental Intracerebral Hemorrhage.

Modulation of chemokines and allergic airway inflammation by selective local sphingosine-1-phosphate receptor 1 agonism in lungs.

Sphingosine-1-phosphate and its receptors have emerged as important modulators of the immune response. The sphingosine-1-phosphate prodrug 2-amino-2-(2-[4-octylphenyl]ethyl)-1,3-propanediol (FTY720) can alleviate experimental allergic airway inflammation. Nevertheless, the role of individual sphingosine-1-phosphate receptors in the regulation of allergic airway inflammation remains undefined. U...

Critical Role of Sphingosine-1-Phosphate Receptor-2 in the Disruption of Cerebrovascular Integrity in Experimental Stroke

The use and effectiveness of current stroke reperfusion therapies are limited by the complications of reperfusion injury, which include increased cerebrovascular permeability and haemorrhagic transformation. Sphingosine-1-phosphate (S1P) is emerging as a potent modulator of vascular integrity via its receptors (S1PR). By using genetic approaches and a S1PR2 antagonist (JTE013), here we show tha...

Therapeutic Effects of the Sphingosine 1-Phosphate Receptor Modulator, Fingolimod (FTY720), on Experimental Autoimmune Encephalomyelitis

Isoflurane attenuates blood-brain barrier disruption in ipsilateral hemisphere after subarachnoid hemorrhage in mice.

BACKGROUND AND PURPOSE We examined effects of isoflurane, volatile anesthetics, on blood-brain barrier disruption in the endovascular perforation model of subarachnoid hemorrhage (SAH) in mice. METHODS Animals were assigned to sham-operated, SAH+vehicle-air, SAH+1%, or 2% isoflurane groups. Neurobehavioral function, brain water content, Evans blue dye extravasation, and Western blotting for s...

Role of sphingosine 1-phosphate (S1P) and effects of fingolimod, an S1P receptor 1 functional antagonist in lymphocyte circulation and autoimmune diseases

Sphingosine 1-phosphate (S1P), a multi-functional phospholipid mediator, is generated from sphingosine by sphingosine kinases and binds to five known G protein-coupled S1P receptors (S1P1, S1P2, S1P3, S1P4, and S1P5). It is widely accepted that S1P receptor 1 (S1P1) plays an essential role in lymphocyte egress from the secondary lymphoid organs (SLO) and thymus, because lymphocyte egress from t...