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 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
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\27212476
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Sci+Rep
2016 ; 6
(ä): 26306
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
A genetically-engineered von Willebrand disease type 2B mouse model displays
defects in hemostasis and inflammation
#MMPMID27212476
Adam F
; Casari C
; Prévost N
; Kauskot A
; Loubière C
; Legendre P
; Repérant C
; Baruch D
; Rosa JP
; Bryckaert M
; de Groot PG
; Christophe OD
; Lenting PJ
; Denis CV
Sci Rep
2016[May]; 6
(ä): 26306
PMID27212476
show ga
von Willebrand disease (VWD)-type 2B is characterized by gain-of-function
mutations in the von Willebrand factor (VWF) A1-domain, leading to increased
affinity for its platelet-receptor, glycoprotein Ib?. We engineered the first
knock-in (KI) murine model for VWD-type 2B by introducing the p.V1316M mutation
in murine VWF. Homozygous KI-mice replicated human VWD-type 2B with
macrothrombocytopenia (platelet counts reduced by 55%, platelet volume increased
by 44%), circulating platelet-aggregates and a severe bleeding tendency. Also,
vessel occlusion was deficient in the FeCl3-induced thrombosis model. Platelet
aggregation induced by thrombin or collagen was defective for KI-mice at all
doses. KI-mice manifested a loss of high molecular weight multimers and increased
multimer degradation. In a model of VWF-string formation, the number of
platelets/string and string-lifetime were surprisingly enhanced in KI-mice,
suggesting that proteolysis of VWF/p.V1316M is differentially regulated in the
circulation versus the endothelial surface. Furthermore, we observed increased
leukocyte recruitment during an inflammatory response induced by the reverse
passive Arthus reaction. This points to an active role of VWF/p.V1316M in the
exfiltration of leukocytes under inflammatory conditions. In conclusion, our
genetically-engineered VWD-type 2B mice represent an original model to study the
consequences of spontaneous VWF-platelet interactions and the physiopathology of
this human disease.
|Amino Acid Substitution
[MESH]
|Animals
[MESH]
|Disease Models, Animal
[MESH]
|Female
[MESH]
|Genetic Engineering
[MESH]
|Hemostasis/genetics
[MESH]
|Humans
[MESH]
|Inflammation/genetics/pathology
[MESH]
|Male
[MESH]
|Mice
[MESH]
|Mice, Inbred C57BL
[MESH]
|Mice, Transgenic
[MESH]
|Mutagenesis, Site-Directed
[MESH]
|Mutant Proteins/blood/chemistry/genetics
[MESH]
|Platelet Adhesiveness
[MESH]
|Platelet Count
[MESH]
|von Willebrand Disease, Type 2/*blood/genetics/*pathology
[MESH]