期刊
NEUROCHEMISTRY INTERNATIONAL
卷 88, 期 -, 页码 15-19出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neuint.2014.10.011
关键词
Hepatic encephalopathy; Minimal hepatic encephalopathy; Hyperammonemia; Glutamatergic neurotransmission; GABAergic neurotransmission; Cognitive function
资金
- Ministerio de Ciencia e Innovacion [SAF2011-23051, CSD2008-00005]
- Conselleria Educacion Generalitat Valenciana [PROMETEO-2009-027, ACOMP/2012/066, ACOMP/2013/101, PROMETEOII/2014/033]
The cognitive and motor alterations in hepatic encephalopathy (HE) are the final result of altered neurotransmission and communication between neurons in neuronal networks and circuits. Different neurotransmitter systems cooperate to modulate cognitive and motor function, with a main role for glutamatergic and GABAergic neurotransmission in different brain areas and neuronal circuits. There is an interplay between glutamatergic and GABAergic neurotransmission alterations in cognitive and motor impairment in HE. This interplay may occur: (a) in different brain areas involved in specific neuronal circuits; (b) in the same brain area through cross-modulation of glutamatergic and GABAergic neurotransmission. We will summarize some examples of the (1) interplay between glutamatergic and GABAergic neurotransmission alterations in different areas in the basal ganglia-thalamus-cortex circuit in the motor alterations in minimal hepatic encephalopathy (MHE); (2) interplay between glutamatergic and GABAergic neurotransmission alterations in cerebellum in the impairment of cognitive function in MHE through altered function of the glutamate-nitric oxide-cGMP pathway. We will also comment the therapeutic implications of the above studies and the utility of modulators of glutamate and GABA receptors to restore cognitive and motor function in rats with hyperammonemia and hepatic encephalopathy. (C) 2014 Elsevier Ltd. All rights reserved.
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