Anna Rita Giovagnoli1, Giuseppe Di Fede2, Giacomina Rossi3, Fabio Moda2, Marina Grisoli2, Orso Bugiani2. 1. Neurology and Neuropathology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Via Celoria 11, 20133, Milano, Italy. annarita.giovagnoli@istituto-besta.it. 2. Neurology and Neuropathology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Via Celoria 11, 20133, Milano, Italy. 3. Neuroradiology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Via Celoria 11, 20133, Milano, Italy.
Abstract
BACKGROUND: Rapidly progressive cognitive impairment is a diagnostic criterion in Creutzfeldt-Jakob disease (CJD), but the diagnosis is usually reached when an analysis of cognitive aspects is no longer possible. OBJECTIVE: This study aims to delineate the cognitive phenotypes preceding severe dementia in CJD compared to secondary metabolic encephalopathies (SME) with rapid cognitive impairment. METHODS: Patients with rapidly progressive neurological symptoms underwent neuropsychological evaluation, analysis of cerebrospinal fluid (CSF) and codon 129 polymorphism of the prion protein gene (PRNP), magnetic resonance imaging (MRI), and single positron emission computed tomography (99mTcSPECT). CSF real-time quaking-induced conversion analysis was applied in CJD patients. Based on literature and clinical expertise, cognitive profiles were correlated with brain areas. RESULTS: Thirty-one patients were diagnosed with CJD (n = 17) or SME; 77 cases of CJD were extracted from the literature. In patients with CJD, verbal initiative, lexical search, long-term memory, attention, and abstract reasoning were the most frequently impaired abilities. Cognitive profiles were mainly related to dysfunction in fronto-temporal areas. Furthermore, they were consistent with areas of hypoperfusion detected by 99mTc SPECT in six patients and cortical and subcortical MRI hyperintensities in eight and 14 patients, respectively, and were similar to those described in the literature. In contrast, cognitive profiles were different from those in SME characterized by visuospatial and constructive deficits relating to posterior brain areas. CONCLUSION: In CJD, clinical and neuropsychological analyses outline a salient cognitive phenotype suggestive of fronto-temporal dysfunction preceding severe dementia. This phenotype is different from that observed in other rapidly progressive encephalopathies.
BACKGROUND: Rapidly progressive cognitive impairment is a diagnostic criterion in Creutzfeldt-Jakob disease (CJD), but the diagnosis is usually reached when an analysis of cognitive aspects is no longer possible. OBJECTIVE: This study aims to delineate the cognitive phenotypes preceding severe dementia in CJD compared to secondary metabolic encephalopathies (SME) with rapid cognitive impairment. METHODS: Patients with rapidly progressive neurological symptoms underwent neuropsychological evaluation, analysis of cerebrospinal fluid (CSF) and codon 129 polymorphism of the prion protein gene (PRNP), magnetic resonance imaging (MRI), and single positron emission computed tomography (99mTcSPECT). CSF real-time quaking-induced conversion analysis was applied in CJD patients. Based on literature and clinical expertise, cognitive profiles were correlated with brain areas. RESULTS: Thirty-one patients were diagnosed with CJD (n = 17) or SME; 77 cases of CJD were extracted from the literature. In patients with CJD, verbal initiative, lexical search, long-term memory, attention, and abstract reasoning were the most frequently impaired abilities. Cognitive profiles were mainly related to dysfunction in fronto-temporal areas. Furthermore, they were consistent with areas of hypoperfusion detected by 99mTc SPECT in six patients and cortical and subcortical MRI hyperintensities in eight and 14 patients, respectively, and were similar to those described in the literature. In contrast, cognitive profiles were different from those in SME characterized by visuospatial and constructive deficits relating to posterior brain areas. CONCLUSION: In CJD, clinical and neuropsychological analyses outline a salient cognitive phenotype suggestive of fronto-temporal dysfunction preceding severe dementia. This phenotype is different from that observed in other rapidly progressive encephalopathies.
Authors: R J Cordery; K Alner; L Cipolotti; M Ron; A Kennedy; J Collinge; M N Rossor Journal: J Neurol Neurosurg Psychiatry Date: 2005-03 Impact factor: 10.154
Authors: Saranya E Sundaram; Adam M Staffaroni; Nicole C Walker; Kaitlin B Casaletto; Megan Casey; Aili Golubjatnikov; Stacy Metcalf; Kelly O'Leary; Katherine Wong; Kendra Benisano; Sven Forner; Marta Gonzalez Catalan; Isabel E Allen; Howard J Rosen; Joel H Kramer; Michael D Geschwind Journal: Ann Clin Transl Neurol Date: 2020-09 Impact factor: 4.511
Authors: I Zerr; K Kallenberg; D M Summers; C Romero; A Taratuto; U Heinemann; M Breithaupt; D Varges; B Meissner; A Ladogana; M Schuur; S Haik; S J Collins; Gerard H Jansen; G B Stokin; J Pimentel; E Hewer; D Collie; P Smith; H Roberts; J P Brandel; C van Duijn; M Pocchiari; C Begue; P Cras; R G Will; P Sanchez-Juan Journal: Brain Date: 2009-09-22 Impact factor: 13.501