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Hemostatic Profile: Is There Any Difference between Alzheimer´s Disease and Frontotemporal Dementia?

M.V. Silva1, C.M. Loures2, C. Magalhães1, V. Fraga1, R.C. Duarte1, L.M. Dusse1, L.C. Souza3, K.B. Borges1, M.D.G. Carvalho1

1Universidade Federal de Minas Gerais, Faculdade de Farmácia, Belo Horizonte, Brazil, 2Federal University of Minas Gerais, Clinical and Toxicological Analysis, Belo Horizonte, Brazil, 3Universidade Federal de Minas Gerais, Faculdade de Medicina, Belo Horizonte, Brazil

Abstract Number: PB0624

Meeting: ISTH 2020 Congress

Theme: Diagnostics and OMICs » Laboratory Diagnostics

Background: Alzheimer´s disease (AD) is the most frequent cause of dementia. Several hypotheses aim to explain its pathophysiology, which is complex and multifactorial. Hemostatic alterations have been reported in the pathogenesis of AD.

Aims: To investigate possible hemostatic alterations in patients with AD compared to behavioral variant frontotemporal dementia (bvFTD), another important cause of cognitive decline, and in elderly individuals with no cognitive impairment.

Methods: A total of 92 subjects were enrolled and distributed into three groups: AD (n= 34); bvFTD (n= 29) and controls (n=29). Hemostatic alterations were investigated by thrombin generation assays using thrombomodulin (TM) to investigate the resistance to this natural anticoagulant, in addition to plasma levels of ADMA (dimethylassimetric arginine), von Willebrand Factor (FvW), TM and ADAMTS-13 measurements. The study received approval from the local Ethics Committee.

Results: Higher plasma levels of ADAMTS-13 were observed in patients with AD and bvDFT compared to controls, however, no difference was found between the two dementias. ADMA, FvW and TM plasma levels and thrombin generation parameters were not different among groups.

Conclusions: There was no difference in the hemostatic profile between patients with AD and bvFTD, and between them and the controls. However, the higher plasma levels of ADAMTS-13 in patients with AD and bvFTD compared to controls encourage further studies on the role of this enzyme in the pathophysiology of dementias.
Ackowledgement: We are very grateful to CAPES, FAPEMIG (APQ 00512-14) and CNPq (426933/2016-8).

To cite this abstract in AMA style:

Silva MV, Loures CM, Magalhães C, Fraga V, Duarte RC, Dusse LM, Souza LC, Borges KB, Carvalho MDG. Hemostatic Profile: Is There Any Difference between Alzheimer´s Disease and Frontotemporal Dementia? [abstract]. Res Pract Thromb Haemost. 2020; 4 (Suppl 1). https://abstracts.isth.org/abstract/hemostatic-profile-is-there-any-difference-between-alzheimers-disease-and-frontotemporal-dementia/. Accessed September 29, 2023.

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