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Comparative analysis of cerebrospinal fluid and serum markers in dementia with Lewy Bodies and Alzheimer's Disease dementia

Grant number: 15/10109-5
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): September 01, 2015
Effective date (End): August 31, 2018
Field of knowledge:Health Sciences - Medicine
Principal Investigator:Maria da Graca Naffah Mazzacoratti
Grantee:Fabricio Ferreira de Oliveira
Home Institution: Escola Paulista de Medicina (EPM). Universidade Federal de São Paulo (UNIFESP). Campus São Paulo. São Paulo , SP, Brazil

Abstract

The objective of this cross-sectional study consists on the comparative analysis of cerebrospinal fluid and serum biomarkers among controls without dementia, patients with dementia with Lewy bodies, and patients with probable Alzheimer's disease dementia, seeking to better discriminate between these dementia syndromes and contrast with people without cognitive impairment. At least 26 subjects with dementia with Lewy bodies will be paired with 26 subjects with probable Alzheimer's disease dementia by gender and cognitive scores, also paired with 26 controls without dementia by gender and age (±1 year). All subjects and controls will undergo blood tests for genetic definition of APOE haplotypes, protein electrophoresis, and measurement of concentration and activity of the angiotensin-converting enzyme. All subjects and controls will also be submitted to cerebrospinal fluid cytometry, in addition to analyses of concentrations of total proteins and protein fractions, Abeta42, Abeta40, Abeta38, tau, phosphorilated tau, alpha-synuclein, ubiquitin, monoamine metabolites (HVA, DOPAC, 5-HIAA, MHPG), and measurement of concentration and activity of the angiotensin-converting enzyme. The study of the cognitive effects of the angiotensin-converting enzyme is justified by its peripheral actions over secretion of adipocytokines and glucose homeostasis, as well as its central actions over degradation of Abeta and brain substance P, thus reducing the activity of neprilysin (which is also an Abeta-degrading enzyme) and the Abeta42/Abeta40 index. Whereas the activity of angiotensin-converting enzyme is boosted in the presence of Abeta, angiotensin-converting enzyme inhibitors might slow cognitive decline by way of central mechanisms and cerebrovascular benefits, particularly when these drugs are brain-penetrating and centrally acting. After controlling for APOE haplotypes and specific pharmacological treatment, it is expected that these biomarkers as well as the relations amongst them might help in the differential diagnoses among dementia syndromes and absence of dementia, in the definition of specific dementia stages, in the determination of patterns of cognitive and functional decline, in the correlation with neuropsychiatric symptoms, and in the detection of mechanisms of amyloidogenesis. (AU)

Scientific publications (9)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DE OLIVEIRA, FABRICIO FERREIRA; BERRETTA, JULIANA MARILIA; DE ALMEIDA JUNIOR, GUIDO VEIGA; DE ALMEIDA, SANDRO SOARES; CHEN, ELIZABETH SUCHI; SMITH, MARILIA CARDOSO; FERREIRA BERTOLUCCI, PAULO HENRIQUE. Pharmacogenetic analyses of variations of measures of cardiovascular risk in Alzheimer's dementia. INDIAN JOURNAL OF MEDICAL RESEARCH, v. 150, n. 3, p. 261-271, SEP 2019. Web of Science Citations: 0.
DE OLIVEIRA, FABRICIO FERREIRA; PEREIRA, FERNANDO VIEIRA; KAMIKADO PIVI, GLAUCIA AKIKO; SMITH, MARILIA CARDOSO; FERREIRA BERTOLUCCI, PAULO HENRIQUE. Effects of APOE haplotypes and measures of cardiovascular risk over gender-dependent cognitive and functional changes in one year in Alzheimer's disease. International Journal of Neuroscience, v. 128, n. 5, p. 472-476, 2018. Web of Science Citations: 6.
DE OLIVEIRA, FABRICIO FERREIRA; DE ALMEIDA, SANDRO SOARES; CHEN, ELIZABETH SUCHI; SMITH, MARILIA CARDOSO; NAFFAH-MAZZACORATTI, MARIA DA GRACA; FERREIRA BERTOLUCCI, PAULO HENRIQUE. Lifetime Risk Factors for Functional and Cognitive Outcomes in Patients with Alzheimer's Disease. JOURNAL OF ALZHEIMER'S DISEASE, v. 65, n. 4, p. 1283-1299, 2018. Web of Science Citations: 2.
DE OLIVEIRA, FABRICIO FERREIRA; CHEN, ELIZABETH SUCHI; SMITH, MARILIA CARDOSO; FERREIRA BERTOLUCCI, PAULO HENRIQUE. Pharmacogenetics of Angiotensin-Converting Enzyme Inhibitors in Patients with Alzheimer's Disease Dementia. Current Alzheimer Research, v. 15, n. 4, p. 386-398, 2018. Web of Science Citations: 12.
FABRICIO F. DE OLIVEIRA; ELIZABETH S. CHEN; MARILIA C. SMITH; PAULO H. BERTOLUCCI. Associations of cerebrovascular metabolism genotypes with neuropsychiatric symptoms and age at onset of Alzheimer’s disease dementia. Revista Brasileira de Psiquiatria, v. 39, n. 2, p. -, Jun. 2017.
FABRICIO F. DE OLIVEIRA; ELIZABETH S. CHEN; MARILIA C. SMITH; PAULO H. BERTOLUCCI. Associations of cerebrovascular metabolism genotypes with neuropsychiatric symptoms and age at onset of Alzheimer's disease dementia. Revista Brasileira de Psiquiatria, v. 39, n. 2, p. 95-103, Jun. 2017. Web of Science Citations: 5.
DE OLIVEIRA, FABRICIO FERREIRA; CHEN, ELIZABETH SUCHI; SMITH, MARILIA CARDOSO; FERREIRA BERTOLUCCI, PAULO HENRIQUE. Longitudinal lipid profile variations and clinical change in Alzheimer's disease dementia. Neuroscience Letters, v. 646, p. 36-42, APR 12 2017. Web of Science Citations: 9.
DE OLIVEIRA, FABRICIO FERREIRA; CORREIA MARIN, SHEILLA DE MEDEIROS; FERREIRA BERTOLUCCI, PAULO HENRIQUE. Neurological impressions on the organization of language networks in the human brain. BRAIN INJURY, v. 31, n. 2, p. 140-150, 2017. Web of Science Citations: 5.
DE OLIVEIRA, FABRICIO FERREIRA; CHEN, ELIZABETH SUCHI; SMITH, MARILIA CARDOSO; FERREIRA BERTOLUCCI, PAULO HENRIQUE. Associations of Blood Pressure with Functional and Cognitive Changes in Patients with Alzheimer's Disease. DEMENTIA AND GERIATRIC COGNITIVE DISORDERS, v. 41, n. 5-6, p. 314-323, 2016. Web of Science Citations: 7.

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