TY  - JOUR
A1  - Albert-Weissenberger, Christiane
A1  - Stetter, Christian
A1  - Meuth, Sven G.
A1  - Göbel, Kerstin
A1  - Bader, Michael
A1  - Sirén, Anna-Leena
A1  - Kleinschnitz, Christoph
T1  - Blocking of Bradykinin Receptor B1 Protects from Focal Closed Head Injury in Mice by Reducing Axonal Damage and Astroglia Activation
JF  - Journal of Cerebral Blood Flow and Metabolism
N2  - The two bradykinin receptors B1R and B2R are central components of the kallikrein–kinin system with different expression kinetics and binding characteristics. Activation of these receptors by kinins triggers inflammatory responses in the target organ and in most situations enhances tissue damage. We could recently show that blocking of B1R, but not B2R, protects from cortical cryolesion by reducing inflammation and edema formation. In the present study, we investigated the role of B1R and B2R in a closed head model of focal traumatic brain injury (TBI; weight drop). Increased expression of B1R in the injured hemispheres of wild-type mice was restricted to the later stages after brain trauma, i.e. day 7 (P<0.05), whereas no significant induction could be observed for the B2R (P>0.05). Mice lacking the B1R, but not the B2R, showed less functional deficits on day 3 (P<0.001) and day 7 (P<0.001) compared with controls. Pharmacological blocking of B1R in wild-type mice had similar effects. Reduced axonal injury and astroglia activation could be identified as underlying mechanisms, while inhibition of B1R had only little influence on the local inflammatory response in this model. Inhibition of B1R may become a novel strategy to counteract trauma-induced neurodegeneration.
KW  - R-715
KW  - kinin receptors
KW  - closed head injury
KW  - β-APP
KW  - astrocytes
KW  - TNF-α
Y1  - 2012
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-125903
VL  - 32
IS  - 9
ER  - 
TY  - JOUR
A1  - Albert-Weißenberger, Christiane
A1  - Várrallyay, Csanád
A1  - Raslan, Furat
A1  - Kleinschnitz, Christoph
A1  - Sirén, Anna-Leena
T1  - An experimental protocol for mimicking pathomechanisms of traumatic brain injury in mice
N2  - Traumatic brain injury (TBI) is a result of an outside force causing immediate mechanical disruption of brain tissue and delayed pathogenic events. In order to examine injury processes associated with TBI, a number of rodent models to induce brain trauma have been described. However, none of these models covers the entire spectrum of events that might occur in TBI. Here we provide a thorough methodological description of a straightforward closed head weight drop mouse model to assess brain injuries close to the clinical conditions of human TBI.
KW  - Medizin
KW  - closed head injury
KW  - traumatic brain injury
KW  - neurobehavioural deficits
KW  - astrocyte
KW  - microglia
KW  - neurons
Y1  - 2012
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-75368
ER  -