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Articles by Eric M. Reiman
Total Records ( 3 ) for Eric M. Reiman
  Reisa A. Sperling , Paul S. Aisen , Laurel A. Beckett , Laurel A. Beckett , Suzanne Craft , Anne M. Fagan , Takeshi Iwatsubo , Clifford R. Jack , Jeffrey Kaye , Thomas J. Montine , Denise C. Park , Eric M. Reiman , Christopher C. Rowe , Eric Siemers , Yaakov Stern , Yaakov Stern , Maria C. Carrillo , Bill Thies , Marcelle Morrison- Bogorad , Molly V. Wagster and Creighton H. Phelps
  The National Institute on Aging and the Alzheimer‘s Association charged a workgroup with the task of developing criteria for the symptomatic predementia phase of Alzheimer‘s disease (AD), referred to in this article as mild cognitive impairment due to AD. The workgroup developed the following two sets of criteria: (1) core clinical criteria that could be used by healthcare providers without access to advanced imaging techniques or cerebrospinal fluid analysis, and (2) research criteria that could be used in clinical research settings, including clinical trials. The second set of criteria incorporate the use of biomarkers based on imaging and cerebrospinal fluid measures. The final set of criteria for mild cognitive impairment due to AD has four levels of certainty, depending on the presence and nature of the biomarker findings. Considerable work is needed to validate the criteria that use biomarkers and to standardize biomarker analysis for use in community settings.
  Gloria C. Chiang , Philip S. Insel , Duygu Tosun , Norbert Schuff , Diana Truran- Sacrey , Sky T. Raptentsetsang , Paul M. Thompson , Eric M. Reiman , Clifford R. Jack , Nick C. Fox , William J. Jagust , Danielle J. Harvey , Laurel A. Beckett , Anthony Gamst , Paul S. Aisen , Ron C. Petersen and Michael W. Weiner
  Background The majority of studies relating amyloid pathology with brain volumes have been cross-sectional. Apolipoprotein ɛ4 (APOE ɛ4), a genetic risk factor for Alzheimer‘s disease, is also known to be associated with hippocampal volume loss. No studies have considered the effects of amyloid pathology and APOE ɛ4 together on longitudinal volume loss. Methods We evaluated whether an abnormal level of cerebrospinal fluid beta-amyloid (CSF Aβ) and APOE ɛ4 carrier status were independently associated with greater hippocampal volume loss over 1 year. We then assessed whether APOE ɛ4 status and CSF Aβ acted synergistically, testing the significance of an interaction term in the regression analysis. We included 297 participants: 77 cognitively normal, 144 with mild cognitive impairment (MCI), and 76 with Alzheimer‘s disease. Results An abnormal CSF Aβ level was found to be associated with greater hippocampal volume loss over 1 year in each group. APOE ɛ4 was associated with hippocampal volume loss only in the cognitively normal and MCI groups. APOE ɛ4 carriers with abnormal CSF Aβ in the MCI group acted synergistically to produce disproportionately greater volume loss than noncarriers. Conclusion Baseline CSF Aβ predicts progression of hippocampal volume loss. APOE ɛ4 carrier status amplifies the degree of neurodegeneration in MCI. Understanding the effect of interactions between genetic risk and amyloid pathology will be important in clinical trials and our understanding of the disease process.
  Richard J. Caselli , Amylou C. Dueck , Matthew J. Huentelman , Michael W. Lutz , Ann M. Saunders , Eric M. Reiman and Allen D. Roses
  Background TOMM40 (translocase of the outer mitochondrial membrane pore subunit) is in linkage disequilibrium with apolipoprotein E (APOE). APOE e4 is linked to long (L; 21–29 T residues) poly-T variants within intron 6 of TOMM40, whereas APOE e3 can be associated with either a short (S; <21 T residues) or very long (VL; >29 T residues) variant. To assess the possible contribution of TOMM40 to Alzheimer‘s disease onset, we compared the effects of TOMM40 and APOE genotype on preclinical longitudinal memory decline. Methods An APOE e4–enriched cohort of 639 cognitively normal individuals aged 21 to 97 years with known TOMM40 genotype underwent longitudinal neuropsychological testing every 2 years. We estimated the longitudinal effect of age on memory using statistical models that simultaneously modeled cross-sectional and longitudinal effects of age on the Auditory Verbal Learning Test Long-Term Memory score by APOE, TOMM40, and the interaction between the two. Results There were significant effects overall for both TOMM40 (linear effect, P = .04; quadratic effect, P = .03) and APOE (linear effect, P = .06; quadratic effect, P = .008), with no significant interaction (P = .63). In a piecewise model, there was a significant TOMM40 effect before age 60 years (P = .009), characterized by flattened test–retest improvement (VL/VL subgroup only) but no significant APOE effect, and a significant APOE effect after age 60 years (P = .006), characterized by accelerated memory decline (e4 carriers) but no significant TOMM40 effect. Conclusion Both TOMM40 and APOE significantly influence age-related memory performance, but they appear to do so independently of each other.
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