Abstract
The brain integrates numerous sources of information and stimuli from both inside and outside the body and responds to them both voluntarily and involuntarily. To maintain this function, the brain consumes a great deal of energy and oxygen through a large blood supply. The supply of blood, energy, and substances used by the neurons in the brain are strictly regulated by a principal framework of the brain, the neurovascular unit, which includes the blood-brain barrier. The information transduction of the brain nervous system is executed through the electrical conduction of membrane action potentials and chemical transmission at the synapses. Metabolic disorders, such as hypoglycemia and hyperammonemia due to liver failure, perturb the energy supply and the information transduction of the brain nervous system and cause a range of brain disorders that are represented by hepatic encephalopathy (HE). Although the precise mechanisms of HE have not been fully elucidated, noninvasive methods of examination that have been recently developed, including high-quality magnetic resonance spectroscopy and imaging, have made it possible to evaluate the metabolic changes that occur in the brain of cirrhotic patients and then reveal the accumulation of toxic substances prior to overt manifestation of HE.
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Takikawa, Y., Kuroda, H., Sawara, K. (2016). The Brain and Liver. In: Ohira, H. (eds) The Liver in Systemic Diseases. Springer, Tokyo. https://doi.org/10.1007/978-4-431-55790-6_4
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DOI: https://doi.org/10.1007/978-4-431-55790-6_4
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