
18:1 Lyso PA
1-oleoyl-2-hydroxy-sn-glycero-3-phosphate (sodium salt)
Biological responses to LPA
 - Cell Proliferation
  - Inhibition of differentiation (neuroblastoma cells, myoblasts)
  - Platelet aggregation
  - Smooth muscle contraction
  - Neurotransmitter release
  - Stress fibre formation/cell rounding/neurite retraction
  - Cell-surface-fibronectin binding
  - Tumor cell invasion
  - Chemotaxis (dictyostelium amoebae)
  - Cl--mediated membrane depolarization (fibroblasts)
  - Inhibition of connexin 43 based cell-cell communication
  - Increased tight junction permeability (brain endothelial cells)
 
Note: The bioactivity of LPA appears to require long (i.e., C16 to C18) acyl carbon chains of the type usually found associated with membrane lipids although optimum requirements for a single type of acyl carbon chain are not universal. The bioactivity decreases with shorter chain length. In serum, oleoyl and palmitoyl fatty acid containing LPA are the predominant species.