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1.
J Biol Chem ; 287(16): 13182-93, 2012 Apr 13.
Artigo em Inglês | MEDLINE | ID: mdl-22367208

RESUMO

Calpains are calcium-regulated cysteine proteases that have been implicated in the regulation of cell death pathways. Here, we used our calpain-1 null mouse model to evaluate the function of calpain-1 in neural degeneration following a rodent model of traumatic brain injury. In vivo, calpain-1 null mice show significantly less neural degeneration and apoptosis and a smaller contusion 3 days post-injury than wild type littermates. Protection from traumatic brain injury corroborated with the resistance of calpain-1 neurons to apoptosis induced by oxidative stress. Biochemical analysis revealed that caspase-3 activation, extracellular calcium entry, mitochondrial membrane permeability, and release of apoptosis-inducing factor from mitochondria are partially blocked in the calpain-1 null neurons. These findings suggest that the calpain-1 knock-out mice may serve as a useful model system for neuronal protection and apoptosis in traumatic brain injury and other neurodegenerative disorders in which oxidative stress plays a role.


Assuntos
Apoptose/fisiologia , Lesões Encefálicas/metabolismo , Lesões Encefálicas/patologia , Calpaína/genética , Calpaína/metabolismo , Estresse Oxidativo/fisiologia , Animais , Fator de Indução de Apoptose/metabolismo , Cálcio/metabolismo , Caspase 3/metabolismo , Modelos Animais de Doenças , Feminino , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout , Membranas Mitocondriais/metabolismo , Degeneração Neural/metabolismo , Degeneração Neural/patologia , Neurônios/metabolismo , Neurônios/patologia , RNA Interferente Pequeno/genética
3.
JSLS ; 6(4): 393-5, 2002.
Artigo em Inglês | MEDLINE | ID: mdl-12500844

RESUMO

A case of an anomalous extrahepatic biliary system is reported in which the right hepatic duct was found to enter the infundibulum of the gallbladder. In this case, a selective intraoperative cholangiography has prevented a possible major iatrogenic injury.


Assuntos
Colangiografia , Ducto Cístico/anormalidades , Ducto Hepático Comum/cirurgia , Ducto Cístico/diagnóstico por imagem , Feminino , Ducto Hepático Comum/diagnóstico por imagem , Humanos , Período Intraoperatório , Pessoa de Meia-Idade
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