Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 263.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 263.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 263.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 263.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 263.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 296.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 296.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 296.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 296.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 296.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 296.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 296.79999999999995 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\25063875
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Immunol
2014 ; 193
(5
): 2469-82
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
ADAM9 is a novel product of polymorphonuclear neutrophils: regulation of
expression and contributions to extracellular matrix protein degradation during
acute lung injury
#MMPMID25063875
Roychaudhuri R
; Hergrueter AH
; Polverino F
; Laucho-Contreras ME
; Gupta K
; Borregaard N
; Owen CA
J Immunol
2014[Sep]; 193
(5
): 2469-82
PMID25063875
show ga
A disintegrin and a metalloproteinase domain (ADAM) 9 is known to be expressed by
monocytes and macrophages. In this study, we report that ADAM9 is also a product
of human and murine polymorphonuclear neutrophils (PMNs). ADAM9 is not
synthesized de novo by circulating PMNs. Rather, ADAM9 protein is stored in the
gelatinase and specific granules and the secretory vesicles of human PMNs.
Unstimulated PMNs express minimal quantities of surface ADAM9, but activation of
PMNs with degranulating agonists rapidly (within 15 min) increases PMN surface
ADAM9 levels. Human PMNs produce small quantities of soluble forms of ADAM9.
Surprisingly, ADAM9 degrades several extracellular matrix (ECM) proteins,
including fibronectin, entactin, laminin, and insoluble elastin, as potently as
matrix metalloproteinase-9. However, ADAM9 does not degrade types I, III, or IV
collagen or denatured collagens in vitro. To determine whether Adam9 regulates
PMN recruitment or ECM protein turnover during inflammatory responses, we
compared wild-type and Adam9(-/-) mice in bacterial LPS- and bleomycin-mediated
acute lung injury (ALI). Adam9 lung levels increase 10-fold during LPS-mediated
ALI in wild-type mice (due to increases in leukocyte-derived Adam9), but Adam9
does not regulate lung PMN (or macrophage) counts during ALI. Adam9 increases
mortality, promotes lung injury, reduces lung compliance, and increases
degradation of lung elastin during LPS- and/or bleomycin-mediated ALI. Adam9 does
not regulate collagen accumulation in the bleomycin-treated lung. Thus, ADAM9 is
expressed in an inducible fashion on PMN surfaces where it degrades some ECM
proteins, and it promotes alveolar-capillary barrier injury during ALI in mice.