The effects of lysolecithin (LPC) on aggregation, serotonin release, shape, and lysis of rabbit, pig, or human platelets in platelet-rich plasma (PRP) or Tyrode albumin solution were examined during prolonged incubation. LPC added to citrated or heparinized PRP from humans or rabbits at a final concentration above 100 uM caused instantaneous inhibition of platelet aggregation induced by adenosi...

Human E-cadherin and listeriolysin O (LLO) are involved in invasion of Listeria monocytogenes into human liver parenchymal cells (LPC). Yet, it remains to be determined whether murine E-cadherin and LLO participate in invasion of L. monocytogenes into murine LPC. In the present study, involvement of murine E-cadherin and LLO in invasion of L. monocytogenes into murine LPC was investigated. Muri...

BACKGROUND Lysophosphatidylcholine (LPC) has been suggested to play a functional role in various diseases, including atherosclerosis, diabetes, and cancer mediated by LPC-specific G-protein-coupled receptors. Initial studies provided evidence for a potential use of LPC as diagnostic maker. However, existing methodologies are of limited value for a systematic evaluation of LPC species concentrat...

The characteristics of lysophosphatidylcholine (LPC) in its inhibition of the taurine uptake by human intestinal Caco-2 cells were investigated. By treating the cells with 200 microM of LPC, the taurine uptake was rapidly decreased by approximately 60%. This decrease was accompanied by an increase in the Km value for the uptake. A rapid uptake of LPC itself by the cells was also observed. The i...

We previously reported that in the endothelium-denuded rat aorta, lysophosphatidylcholine (LPC) potentiates the contractile responses induced by high-K(+), UK14,304 (a selective alpha(2)-adrenoceptor agonist), and phorbol ester with an associated tyrosine-phosphorylation of proteins. To further investigate this phenomenon, we examined the effects of extracellular-signal-regulated protein kinase...

Linear predictive coding (LPC) is a widely used technique in audio signal processing, especially in speech signal processing. It has found particular use in voice signal compression, allowing for very high compression rates. As widely adopted as it is, LPC is covered in many textbooks and is taught in most advanced audio signal processing courses. So why another article on LPC? Despite covering...

The atherogenic serum lysophosphatidylcholine (LPC) is known to mediate vascular endothelial responses ranging from upregulation of adhesion molecules and growth factors to secretion of chemokines and superoxide anion. We investigated whether endothelial cells express receptors for LPC, which may account for their actions. Human brain microvascular (HBMEC) and dermal microvascular endothelial c...

Proliferation of endothelial cells plays a crucial role in the process of atherosclerotic plaque destabilization. The major component of oxidized low-density lipoprotein lysophosphatidylcholine (LPC) has been shown to promote endothelial proliferation by increasing the production of reactive oxygen species (ROS). Since K(+) channels are known to control the cell cycle, we investigated the role ...

The effects of lysolecithin (LPC) on aggregation, serotonin release, shape, and lysis of rabbit, pig, or human platelets in platelet-rich plasma (PRP) or Tyrode albumin solution were examined during prolonged incubation. LPC added to citrated or heparinized PRP from humans or rabbits at a final concentration above 100 muM caused instantaneous inhibition of platelet aggregation induced by adenos...

Lysophosphatidylcholine (LPC) is a bioactive proinflammatory lipid that can be generated by pathological activities. We investigated the hypothesis that LPC signals increase in endothelial permeability. Stimulation of human dermal microvascular endothelial cells and bovine pulmonary microvascular endothelial cells with LPC (10-50 microM) induced decreases (within minutes) in transendothelial el...