Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=25766322
&cmd=llinks): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests
in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 215
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
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
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
Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 243.2 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\25766322
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Cell+Death+Dis
2015 ; 6
(3
): e1683
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Plasma membrane poration by opioid neuropeptides: a possible mechanism of
pathological signal transduction
#MMPMID25766322
Maximyuk O
; Khmyz V
; Lindskog CJ
; Vukojevi? V
; Ivanova T
; Bazov I
; Hauser KF
; Bakalkin G
; Krishtal O
Cell Death Dis
2015[Mar]; 6
(3
): e1683
PMID25766322
show ga
Neuropeptides induce signal transduction across the plasma membrane by acting
through cell-surface receptors. The dynorphins, endogenous ligands for opioid
receptors, are an exception; they also produce non-receptor-mediated effects
causing pain and neurodegeneration. To understand non-receptor mechanism(s), we
examined interactions of dynorphins with plasma membrane. Using fluorescence
correlation spectroscopy and patch-clamp electrophysiology, we demonstrate that
dynorphins accumulate in the membrane and induce a continuum of transient
increases in ionic conductance. This phenomenon is consistent with stochastic
formation of giant (~2.7?nm estimated diameter) unstructured non-ion-selective
membrane pores. The potency of dynorphins to porate the plasma membrane
correlates with their pathogenic effects in cellular and animal models. Membrane
poration by dynorphins may represent a mechanism of pathological signal
transduction. Persistent neuronal excitation by this mechanism may lead to
profound neuropathological alterations, including neurodegeneration and cell
death.