Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 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\24871700
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Psychopharmacology+(Berl)
2014 ; 231
(17
): 3401-14
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Quantification of ten neuroactive steroids in plasma in Withdrawal Seizure-Prone
and -Resistant mice during chronic ethanol withdrawal
#MMPMID24871700
Snelling C
; Tanchuck-Nipper MA
; Ford MM
; Jensen JP
; Cozzoli DK
; Ramaker MJ
; Helms M
; Crabbe JC
; Rossi DJ
; Finn DA
Psychopharmacology (Berl)
2014[Sep]; 231
(17
): 3401-14
PMID24871700
show ga
RATIONALE: The rapid membrane actions of neuroactive steroids, particularly via
an enhancement of ?-aminobutyric acidA receptors (GABAARs), participate in the
regulation of central nervous system excitability. Prior evidence suggests an
inverse relationship between endogenous GABAergic neuroactive steroid levels and
behavioral changes in excitability during ethanol withdrawal. OBJECTIVES:
Previously, we found that ethanol withdrawal significantly decreased plasma
allopregnanolone (ALLO) levels, a potent GABAergic neuroactive steroid, and
decreased GABAAR sensitivity to ALLO in Withdrawal Seizure-Prone (WSP) but not in
Withdrawal Seizure-Resistant (WSR) mice. However, the effect of ethanol
withdrawal on levels of other endogenous GABAAR-active steroids is not known.
METHODS: After validation of a gas chromatography-mass spectrometry method for
the simultaneous quantification of ten neuroactive steroids, we analyzed plasma
from control male WSP-1 and WSR-1 mice and during ethanol withdrawal. RESULTS: We
quantified levels of nine neuroactive steroids in WSP-1 and WSR-1 plasma; levels
of pregnanolone were not detectable. Basal levels of five neuroactive steroids
were higher in WSR-1 versus WSP-1 mice. Ethanol withdrawal significantly
suppressed five neuroactive steroids in WSP-1 and WSR-1 mice, including ALLO.
CONCLUSIONS: Due to lower basal levels of some GABAAR-active steroids in WSP-1
mice, a withdrawal-induced decrease in WSP-1 mice may have a greater
physiological consequence than a similar decrease in WSR-1 mice. Because WSP-1
mice also exhibit a reduction in GABAAR sensitivity to neuroactive steroids
during withdrawal, it is possible that the combined decrease in neuroactive
steroids and GABAAR sensitivity during ethanol withdrawal in WSP-1 mice
represents a neurochemical substrate for severe ethanol withdrawal.