Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 278.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 278.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 278.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 278.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 278.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 278.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 278.79999999999995 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\26276101
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Biol+Open
2015 ; 4
(9
): 1154-62
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Sex-specific dysregulation of cysteine oxidation and the methionine and folate
cycles in female cystathionine gamma-lyase null mice: a serendipitous model of
the methylfolate trap
#MMPMID26276101
Jiang H
; Hurt KJ
; Breen K
; Stabler SP
; Allen RH
; Orlicky DJ
; Maclean KN
Biol Open
2015[Aug]; 4
(9
): 1154-62
PMID26276101
show ga
In addition to its role in the endogenous synthesis of cysteine, cystathionine
gamma-lyase (CGL) is a major physiological source of the vasorelaxant hydrogen
sulfide. Cgl null mice are potentially useful for studying the influence of this
compound upon vascular tone and endothelial function. Here, we confirm a previous
report that female Cgl null mice exhibit an approximate 45-fold increase in
plasma total homocysteine compared to wild type controls. This level of
homocysteine is approximately 3.5-fold higher than that observed in male Cgl null
mice and is essentially equivalent to that observed in mouse models of
cystathionine beta synthase deficient homocystinuria. Cgl null mice of both sexes
exhibited decreased expression of methylenetetrahydrofolate reductase and
cysteinesulfinate decarboxylase compared to WT controls. Female Cgl null mice
exhibited a sex-specific induction of betaine homocysteine S-methyltransferase
and methionine adenosyltransferase 1, alpha and a 70% decrease in methionine
synthase expression accompanied by significantly decreased plasma methionine.
Decreased plasma cysteine levels in female Cgl null mice were associated with
sex-specific dysregulation of cysteine dioxygenase expression. Comparative
histological assessment between cystathionine beta-synthase and Cgl null mice
indicated that the therapeutic potential of cystathionine against liver injury
merits possible further investigation. Collectively, our data demonstrates the
importance of considering sex when investigating mouse models of inborn errors of
metabolism and indicate that while female Cgl null mice are of questionable
utility for studying the physiological role of hydrogen sulfide, they could serve
as a useful model for studying the consequences of methionine synthase deficiency
and the methylfolate trap.