BACKGROUND: New marker-based criteria for the diagnosis of Alzheimer's disease (AD) were recently proposed. We describe their operational translation in 144 consecutive patients referred to our Memory Clinic. METHODS: Visual ratings of hippocampal atrophy and of cortical glucose hypometabolism in magnetic resonance imaging and positron emission tomography, and concentrations of total tau and Abeta1-42 in cerebrospinal fluid were assessed in 12 patients with subjective memory complaints (SMCs) (Mini-Mental State Examination [MMSE] score, 28.0 +/- 1.1 [mean +/- SD]), 37 with mild cognitive impairment (MCI) (MMSE, 25.1 +/- 3.6), 55 with AD (MMSE, 21.1 +/- 3.5), and 40 with non-AD dementia (MMSE, 21.6 +/- 5.5). RESULTS: The sensitivity for AD of each individual biomarker was higher (65% to 87%) than for MCI (18% to 50%). Each biomarker's specificity for SMC and non-AD dementias was good to moderate (83% and 53%). Positivity for at least one marker increased the probability 38 times of belonging to the AD group (P < 0.0001). CONCLUSION: The new diagnostic criteria can be operationalized in clinical routines, but longitudinal studies of MCI patients will need to assess the criteria's prognostic value.
BACKGROUND: New marker-based criteria for the diagnosis of Alzheimer's disease (AD) were recently proposed. We describe their operational translation in 144 consecutive patients referred to our Memory Clinic. METHODS: Visual ratings of hippocampal atrophy and of cortical glucose hypometabolism in magnetic resonance imaging and positron emission tomography, and concentrations of total tau and Abeta1-42 in cerebrospinal fluid were assessed in 12 patients with subjective memory complaints (SMCs) (Mini-Mental State Examination [MMSE] score, 28.0 +/- 1.1 [mean +/- SD]), 37 with mild cognitive impairment (MCI) (MMSE, 25.1 +/- 3.6), 55 with AD (MMSE, 21.1 +/- 3.5), and 40 with non-AD dementia (MMSE, 21.6 +/- 5.5). RESULTS: The sensitivity for AD of each individual biomarker was higher (65% to 87%) than for MCI (18% to 50%). Each biomarker's specificity for SMC and non-AD dementias was good to moderate (83% and 53%). Positivity for at least one marker increased the probability 38 times of belonging to the AD group (P < 0.0001). CONCLUSION: The new diagnostic criteria can be operationalized in clinical routines, but longitudinal studies of MCI patients will need to assess the criteria's prognostic value.
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Authors: Annapaola Prestia; Anna Caroli; Karl Herholz; Eric Reiman; Kewei Chen; William J Jagust; Giovanni B Frisoni Journal: Alzheimers Dement Date: 2013-01-30 Impact factor: 21.566
Authors: Alessandra Dodich; Aline Mendes; Frédéric Assal; Christian Chicherio; Barinjaka Rakotomiaramanana; Paulina Andryszak; Cristina Festari; Federica Ribaldi; Max Scheffler; Roger Schibli; Adam J Schwarz; Dina Zekry; Karl-Olof Lövblad; Marina Boccardi; Paul G Unschuld; Gabriel Gold; Giovanni B Frisoni; Valentina Garibotto Journal: Eur J Nucl Med Mol Imaging Date: 2019-12-02 Impact factor: 9.236