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Full-Text Articles in Medicine and Health Sciences

Plasma Apolipoprotein E And Alzheimer Disease Risk: The Aibl Study Of Aging, Veer Bala Gupta, Simon Laws, Victor Villemagne, David Ames, Ashley Bush, Kathryn Ellis, James Lui, Colin Masters, Christopher Rowe, Cassandra Szoeke, Kevin Taddei, Ralph Martins Oct 2013

Plasma Apolipoprotein E And Alzheimer Disease Risk: The Aibl Study Of Aging, Veer Bala Gupta, Simon Laws, Victor Villemagne, David Ames, Ashley Bush, Kathryn Ellis, James Lui, Colin Masters, Christopher Rowe, Cassandra Szoeke, Kevin Taddei, Ralph Martins

Simon Laws

Objective: There is mounting evidence for the contribution of apoE to the pathophysiology of Alzheimer disease (AD). Studies also indicate that plasma apoE levels may reflect disease status, suggesting that apoE is a potential AD biomarker. However, while some studies of apoE levels in plasma have presented correlations with AD pathology, others have not. Thus, there is a lack of consensus as to the suitability of plasma apoE as an AD biomarker. The major objective of this cross-sectional study was to investigate total plasma apoE as well as levels of the apoE4 form in a large, highly characterized cohort which …


Gonadotropins And Cognition In Older Women, Mark Rodrigues, Giuseppe Verdile, Jonathan Foster, Eva Hogervorst, Karen Joesbury, Satvinder Dhaliwal, Elizabeth Corder, Simon Laws, Eugene Hone, Richard Prince, Amanda Devine, Pankaj Mehta, John Beilby, Craig Atwood, Ralph Martins Oct 2013

Gonadotropins And Cognition In Older Women, Mark Rodrigues, Giuseppe Verdile, Jonathan Foster, Eva Hogervorst, Karen Joesbury, Satvinder Dhaliwal, Elizabeth Corder, Simon Laws, Eugene Hone, Richard Prince, Amanda Devine, Pankaj Mehta, John Beilby, Craig Atwood, Ralph Martins

Simon Laws

Recent research studies associate elevated gonadotropin levels with dementia. Specifically, an age associated increase in levels of luteinizing hormone has been linked to an increased risk of Alzheimer's disease. The objective of this study was to investigate the association between gonadotropin levels and cognition in older, healthy postmenopausal women. Cognitive functioning was compared with plasma levels of estradiol, luteinizing hormone, follicle stimulating hormone, Aβ40 and APOE genetic status in 649 community-dwelling, non-demented older women residing in Western Australia. High endogenous luteinizing hormone levels were associated with a lower cognitive score, especially in older women and in those women that were …


Associatioin Of Plasma Aβ Peptides With Blood Pressure In The Elderly, Jean-Charles Lambert, Jean Dallongeville, Kathryn A. Ellis, Susanna Schraen-Maschke, James Lui, Simon Laws, Julie Dumont, Florence Richard, Dominque Cottel, Claudine Berr, David Ames, Colin L. Masters, Christopher C. Rowe, Cassandra Szoeke, Christophe Tzourio, Jean-Francois Dartigues, Luc Buee, Ralph Martins, Philippe Amouyel Oct 2013

Associatioin Of Plasma Aβ Peptides With Blood Pressure In The Elderly, Jean-Charles Lambert, Jean Dallongeville, Kathryn A. Ellis, Susanna Schraen-Maschke, James Lui, Simon Laws, Julie Dumont, Florence Richard, Dominque Cottel, Claudine Berr, David Ames, Colin L. Masters, Christopher C. Rowe, Cassandra Szoeke, Christophe Tzourio, Jean-Francois Dartigues, Luc Buee, Ralph Martins, Philippe Amouyel

Simon Laws

Background Aß peptides are often considered as catabolic by-products of the amyloid ß protein precursor (APP), with unknown physiological functions. However, several biological properties have been tentatively attributed to these peptides, including a role in vasomotion. We assess whether plasma Aß peptide levels might be associated with systolic and diastolic blood pressure values (SBP and DBP, respectively). Methodology/Principal Findings Plasma Aß1-40 and Aß1-42 levels were measured using an xMAP-based assay in 1,972 individuals (none of whom were taking antihypertensive drugs) from 3 independent studies: the French population-based 3C and MONA-LISA (Lille) studies (n = 627 and n = 769, respectively) …