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1.
Rev. méd. Chile ; 129(9): 1051-1055, sept. 2001. ilus
Article in Spanish | LILACS | ID: lil-302036

ABSTRACT

Chronic hepatic encephalopathy (CHE) is a disabling complication of chronic liver failure and porto-systemic shunt.The pathogenesis of CHE remains unclear but increased levels of ammonia are a basic feature. Several clinical and experimental observations support a role for manganese (Mn) in the pathogenesis of this disorder. Increased blood levels of Mn have been described in patients with CHE and this could lead to its accumulation on the basal ganglia and characteristic hyperintensities of basal ganglia as seen on magnetic resonance imaging (MRI) of the brain. We report on the clinical features and characteristic radiologic findings of a patient who presented with the neurologic syndrome of CHE and who had very high blood levels of Mn in the absence of an occupational exposure to this metal. Our report supports the hypothesis that Mn has a role in the pathogenesis of CHE and also suggests that brain MRI is a useful marker of the brain metabolic repercusion due to CHE


Subject(s)
Humans , Female , Middle Aged , Basal Ganglia , Manganese , Hepatic Encephalopathy/etiology , Chronic Disease , Neomycin , Parkinsonian Disorders , Manganese , Myoclonus , Nervous System Diseases , Ammonia/blood , Hepatic Encephalopathy/diagnosis , Hepatic Encephalopathy/physiopathology
3.
Rev. chil. neuro-psiquiatr ; 27(1): 49-68, ene.-mar. 1989. tab, ilus
Article in Spanish | LILACS | ID: lil-67649

ABSTRACT

En el presente trabajo se realiza una puesta al día de la Encefalopatía o Demencia Dialítica (ED) trastorno neurológico de gran interés, eminentemente asociado a la hemodiálisis crónica. Se revisan las diversas etiologías implicadas, destacando en particular la toxicidad por aluminio como causa de mayor relevancia a la luz de la información actual. Se describe el cuadro clínico en extensión, con sus variadas manifestaciones semiológicas, su evolución, los estudios complementarios de mayor utilidad en su diagnóstico, los hallazgos neuropatológicos, los variados diagnósticos diferenciales, así como las medidas profilácticas y terapéuticas pertinentes. Además, se establecen algunos alcances con patologías asociadas tanto a la ED como a la toxicidad por aluminio. Finalmente se presentan 6 casos clínicos documentados estudiados por el autor, con especial énfasis en su expresión clínica, su evolución, los hallazgos del laboratorio, las terapias aplicadas y su relación con elevadas concentraciones de alumninio en la solución de diálisis como en el suero de los pacientes


Subject(s)
Adult , Humans , Male , Female , Aluminum/adverse effects , Cerebellar Diseases/etiology , Dialysis/adverse effects , Renal Dialysis/adverse effects , Cerebellar Diseases/chemically induced , Cerebellar Diseases/diagnosis
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