Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\24992464
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Prog+Lipid+Res
2014 ; 56
(ä): 1-18
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Phosphatidylserine in the brain: metabolism and function
#MMPMID24992464
Kim HY
; Huang BX
; Spector AA
Prog Lipid Res
2014[Oct]; 56
(ä): 1-18
PMID24992464
show ga
Phosphatidylserine (PS) is the major anionic phospholipid class particularly
enriched in the inner leaflet of the plasma membrane in neural tissues. PS is
synthesized from phosphatidylcholine or phosphatidylethanolamine by exchanging
the base head group with serine, and this reaction is catalyzed by
phosphatidylserine synthase 1 and phosphatidylserine synthase 2 located in the
endoplasmic reticulum. Activation of Akt, Raf-1 and protein kinase C signaling,
which supports neuronal survival and differentiation, requires interaction of
these proteins with PS localized in the cytoplasmic leaflet of the plasma
membrane. Furthermore, neurotransmitter release by exocytosis and a number of
synaptic receptors and proteins are modulated by PS present in the neuronal
membranes. Brain is highly enriched with docosahexaenoic acid (DHA), and brain PS
has a high DHA content. By promoting PS synthesis, DHA can uniquely expand the PS
pool in neuronal membranes and thereby influence PS-dependent signaling and
protein function. Ethanol decreases DHA-promoted PS synthesis and accumulation in
neurons, which may contribute to the deleterious effects of ethanol intake.
Improvement of some memory functions has been observed in cognitively impaired
subjects as a result of PS supplementation, but the mechanism is unclear.