8 documents found, page 1 of 1
Exploring first-degree family history in a cohort of Portuguese Alzheimer’s dis...
Tábuas-Pereira, Miguel; Bernardes, Catarina; Durães, João; Lima, Marisa; Nogueira, Ana Rita; Saraiva, Jorge; Tábuas, Teresa; Coelho, MarianaAlzheimer’s disease (AD) heritability is estimated to be around 70–80%. Yet, much of it remains to be explained. Studying transmission patterns may help in understanding other factors contributing to the development of AD. In this study, we aimed to search for evidence of autosomal recessive or X- and Y-linked inheritance of risk factors in a large cohort of Portuguese AD patients. We collected family history f...
Genetic polymorphisms of P2RX7 but not of ADORA2A are associated with the sever...
Lindo, Jorge; Nogueira, Célia; Soares, Rui; Cunha, Nuno; Almeida, Maria Rosário; Rodrigues, Lisa; Coelho, Patricia; Rodrigues, FranciscoSARS-CoV-2 infection ranges from mild to severe presentations, according to the intensity of the aberrant inflammatory response. Purinergic receptors dually control the inflammatory response: while adenosine A2A receptors (A2ARs) are anti-inflammatory, ATP P2X7 receptors (P2X7Rs) exert pro-inflammatory effects. The aim of this study was to assess if there were differences in allelic andgenotypic frequencies of ...
Genetic polymorphisms of P2RX7 but not of ADORA2A are associated with the sever...
Lindo, Jorge; Nogueira, Célia; Soares, Rui; Cunha, Nuno; Almeida, Maria Rosário; Rodrigues, Lisa; Coelho, Patrícia; Rodrigues, FranciscoSARS-CoV-2 infection ranges from mild to severe presentations, according to the intensity of the aberrant inflammatory response. Purinergic receptors dually control the inflammatory response: while adenosine A2A receptors (A2ARs) are anti-inflammatory, ATP P2X7 receptors (P2X7Rs) exert pro-inflammatory effects. The aim of this study was to assess if there were differences in allelic and genotypic frequencies of...
CSF glial markers are elevated in a subset of patients with genetic frontotempo...
the Genetic FTD Initiative, GENFI; Woollacott, Ione O.C.; Swift, Imogen J.; Sogorb-Esteve, Aitana; Heller, Carolin; Knowles, KathrynBackground: Neuroinflammation has been shown to be an important pathophysiological disease mechanism in frontotemporal dementia (FTD). This includes activation of microglia, a process that can be measured in life through assaying different glia-derived biomarkers in cerebrospinal fluid. However, only a few studies so far have taken place in FTD, and even fewer focusing on the genetic forms of FTD. Methods: We i...
In vitro and in vivo effects of SerpinA1 on the modulation of Transthyretin pro...
Bezerra, Filipa; Niemietz, Christoph; Schmidt, Hartmut H. J.; Zibert, Andree; Guo, Shuling; Monia, Brett P.; Gonçalves, Paula Isabel MeiraTransthyretin (TTR) proteolysis has been recognized as a complementary mechanism contributing to transthyretin-related amyloidosis (ATTR amyloidosis). Accordingly, amyloid deposits can be composed mainly of full-length TTR or contain a mixture of both cleaved and full-length TTR, particularly in the heart. The fragmentation pattern at Lys48 suggests the involvement of a serine protease, such as plasmin. The mos...
Age at symptom onset and death and disease duration in genetic frontotemporal d...
Moore, Katrina M.; Nicholas, Jennifer; Grossman, Murray; McMillan, Corey T.; Irwin, David J.; Massimo, Lauren; Van Deerlin, Vivianna M.Background: Frontotemporal dementia is a heterogenous neurodegenerative disorder, with about a third of cases being genetic. Most of this genetic component is accounted for by mutations in GRN, MAPT, and C9orf72. In this study, we aimed to complement previous phenotypic studies by doing an international study of age at symptom onset, age at death, and disease duration in individuals with mutations in GRN, MAPT,...
Rare nonsynonymous variants in SORT1 are associated with increased risk for fro...
Philtjens, Stéphanie; Van Mossevelde, Sara; van der Zee, Julie; Wauters, Eline; Dillen, Lubina; Vandenbulcke, Mathieu; Vandenberghe, RikWe investigated the genetic role of sortilin (SORT1) in frontotemporal dementia (FTD). SORT1 is the neuronal receptor for granulin, encoded by the progranulin gene (GRN), a major causal gene for inherited FTD. In Belgian cohorts of 636 FTD patients and 1066 unaffected control individuals, we identified 5 patient-only nonsynonymous rare variants in SORT1. Rare variant burden analysis showed a significant increas...
Rare variants in PLD3 do not affect risk for early-onset Alzheimer disease in a...
Cacace, Rita; Van den Bossche, Tobi; Engelborghs, Sebastiaan; Geerts, Nathalie; Laureys, Annelies; Dillen, Lubina; Graff, Caroline; Thonberg, HåkanRare variants in the phospholipase D3 gene (PLD3) were associated with increased risk for late-onset Alzheimer disease (LOAD). We identified a missense mutation in PLD3 in whole-genome sequence data of a patient with autopsy confirmed Alzheimer disease (AD) and onset age of 50 years. Subsequently, we sequenced PLD3 in a Belgian early-onset Alzheimer disease (EOAD) patient (N = 261) and control (N = 319) cohort,...