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• W2072031026 abstract "Background & Aims Extrapyramidal and cerebellar symptoms belong to the most prominent features of episodic hepatic encephalopathy, and usually decrease upon ammonia-lowering therapy. Rapidly progressing parkinsonian symptoms, which are unresponsive to treatment of hepatic encephalopathy, indicate cirrhosis-related Parkinsonism. This study aims at analyzing the prevalence of cirrhosis-related Parkinsonism in patients with liver cirrhosis, and to study the functional status of the striatal dopaminergic system in these patients. Methods 214 patients with liver cirrhosis who were consecutively seen at the out-patient clinic for liver transplant candidates and/or at the transplantation wards at Hannover Medical School, between August 1, 2008 and March 31, 2011, underwent a standardized neurological examination while on the waiting list or immediately after liver transplantation. Single photon emission computer tomography (SPECT) using 123I-beta-CIT, for the evaluation of the striatal dopamine transporter function, and 123I-IBZM for the evaluation of the striatal dopamine D2 receptor availability, was performed in 6 patients with cirrhosis-related Parkinsonism. Results Cirrhosis-related Parkinsonism was diagnosed in 9 of 214 patients (4.2%). SPECT revealed significantly decreased dopamine receptor availability in 5 of 6 patients studied, and significantly decreased dopamine transporter availability in 3. Levodopa improved motor dysfunction in two of four patients treated, although only temporarily. Incomplete recovery was observed in two patients after liver transplantation. Conclusions Cirrhosis-related Parkinsonism is more frequent than presumed. The presented data suggest pre- and postsynaptic alteration of striatal dopaminergic neurotransmission as a possible cause of cirrhosis-related Parkinsonism and reveal the limited effects of dopaminergic therapy. Extrapyramidal and cerebellar symptoms belong to the most prominent features of episodic hepatic encephalopathy, and usually decrease upon ammonia-lowering therapy. Rapidly progressing parkinsonian symptoms, which are unresponsive to treatment of hepatic encephalopathy, indicate cirrhosis-related Parkinsonism. This study aims at analyzing the prevalence of cirrhosis-related Parkinsonism in patients with liver cirrhosis, and to study the functional status of the striatal dopaminergic system in these patients. 214 patients with liver cirrhosis who were consecutively seen at the out-patient clinic for liver transplant candidates and/or at the transplantation wards at Hannover Medical School, between August 1, 2008 and March 31, 2011, underwent a standardized neurological examination while on the waiting list or immediately after liver transplantation. Single photon emission computer tomography (SPECT) using 123I-beta-CIT, for the evaluation of the striatal dopamine transporter function, and 123I-IBZM for the evaluation of the striatal dopamine D2 receptor availability, was performed in 6 patients with cirrhosis-related Parkinsonism. Cirrhosis-related Parkinsonism was diagnosed in 9 of 214 patients (4.2%). SPECT revealed significantly decreased dopamine receptor availability in 5 of 6 patients studied, and significantly decreased dopamine transporter availability in 3. Levodopa improved motor dysfunction in two of four patients treated, although only temporarily. Incomplete recovery was observed in two patients after liver transplantation. Cirrhosis-related Parkinsonism is more frequent than presumed. The presented data suggest pre- and postsynaptic alteration of striatal dopaminergic neurotransmission as a possible cause of cirrhosis-related Parkinsonism and reveal the limited effects of dopaminergic therapy." @default.
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• W2072031026 date "2013-04-01" @default.
• W2072031026 modified "2023-10-15" @default.
• W2072031026 title "Cirrhosis-related Parkinsonism: Prevalence, mechanisms and response to treatments" @default.
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• W2072031026 doi "https://doi.org/10.1016/j.jhep.2012.11.043" @default.
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