Medicine and Health Sciences Commons^™

An Intergenerational Playgroup In An Australian Residential Aged-Care Setting: A Qualitative Case Study, Gabrielle B. Rosa Hernandez, Carolyn M. Murray, Mandy Stanley

Research outputs 2014 to 2021

Intergenerational programs are emerging within the aged-care context as they provide a unique opportunity for older adults living with or without cognitive impairments to connect with children. One type of intergenerational program is an ‘intergenerational playgroup’ which creates opportunities for children to develop their skills, parents to create a local peer support network and provides older adults at risk of isolation with vital community interaction. The objective of this research was to evaluate an intergenerational playgroup taking place weekly within a residential aged-care setting. A qualitative case study research design was used to perform five observation sessions and semi-structured in-depth …

Alzheimer's Disease Research Progress In Australia: The Alzheimer's Association International Conference Satellite Symposium In Sydney, Claire E. Sexton, Kaarin J. Anstey, Filippo Baldacci, C. J. Barnum, Anna M. Barron, Kaj Blennow, Henry Brodaty, Samantha Burnham, Fanny M. Elahi, Jürgen Götz, Yun-Hee Jeon, Maya Koronyo-Hamaoui, Susan M. Landau, Nicola T. Lautenschlager, Simon M. Laws, Darren M. Lipnicki, Hanzhang Lu, Colin L. Masters, Wendy Moyle, Akinori Nakamura, Giulio Maria Pasinetti, Naren Rao, Christopher Rowe, Perminder S. Sachdev, Peter R. Schofield, Einar M. Sigurdsson

Research outputs 2014 to 2021

The Alzheimer's Association International Conference held its sixth Satellite Symposium in Sydney, Australia in 2019, highlighting the leadership of Australian researchers in advancing the understanding of and treatment developments for Alzheimer's disease (AD) and other dementias. This leadership includes the Australian Imaging, Biomarker, and Lifestyle Flagship Study of Ageing (AIBL), which has fueled the identification and development of many biomarkers and novel therapeutics. Two multimodal lifestyle intervention studies have been launched in Australia; and Australian researchers have played leadership roles in other global studies in diverse populations. Australian researchers have also played an instrumental role in efforts to understand mechanisms …

Design And Development Of A Mobile Health (Mhealth) Platform For Dementia Prevention In The Prevention Of Dementia By Mobile Phone Applications (Prodemos) Project, Melanie Hafdi, Esmé Eggink, Marieke P. Hoevenaar-Blom, M. Patrick Witvliet, Sandrine Andrieu, Linda Barnes, Carol Brayne, Rachael Brooks, Nicola Coley, Jean Georges, Abraham Van Der Groep, Harm Van Marwijk, Mark Van Der Meijden, Libin Song, Manshu Song, Youxin Wang, Wenzhi Wang, Wei Wang, Anders Wimo, Xiaoyan Ye, Eric P. Moll Van Charante, Edo Richard, Prodemos Consortium

Research outputs 2014 to 2021

Background:

Mobile health (mHealth) has the potential to bring preventive healthcare within reach of populations with limited access to preventive services, by delivering personalized support at low cost. Although numerous mHealth interventions are available, very few have been developed following an evidence-based rationale or have been tested for efficacy. This article describes the systematic development of a coach-supported mHealth application to improve healthy lifestyles for the prevention of dementia and cardiovascular disease in the United Kingdom (UK) and China.

Methods:

Development of the Prevention of Dementia by Mobile Phone applications (PRODEMOS) platform built upon the experiences with the Healthy Aging …

Higher Coffee Consumption Is Associated With Slower Cognitive Decline And Less Cerebral Aβ-Amyloid Accumulation Over 126 Months: Data From The Australian Imaging, Biomarkers, And Lifestyle Study, Samantha L. Gardener, Stephanie R. Rainey-Smith, Victor L. Villemagne, Jurgen Fripp, Vincent Doré, Pierrick Bourgeat, Kevin Taddei, Christopher Fowler, Colin L. Masters, Paul Maruff, Christopher C. Rowe, David Ames, Ralph N. Martins, Aibl Investigators

Research outputs 2014 to 2021

Background:

Worldwide, coffee is one of the most popular beverages consumed. Several studies have suggested a protective role of coffee, including reduced risk of Alzheimer’s disease (AD). However, there is limited longitudinal data from cohorts of older adults reporting associations of coffee intake with cognitive decline, in distinct domains, and investigating the neuropathological mechanisms underpinning any such associations.

Methods: The aim of the current study was to investigate the relationship between self-reported habitual coffee intake, and cognitive decline assessed using a comprehensive neuropsychological battery in 227 cognitively normal older adults from the Australian Imaging, Biomarkers, and Lifestyle (AIBL) study, over …

Intake Of Products Containing Anthocyanins, Flavanols, And Flavanones, And Cognitive Function: A Narrative Review, Samantha L. Gardener, Stephanie R. Rainey-Smith, Michael Weinborn, Catherine P. Bondonno, Ralph N. Martins

Research outputs 2014 to 2021

The purpose of this review is to examine human research studies published within the past 6 years which evaluate the role of anthocyanin, flavanol, and flavanone consumption in cognitive function, and to discuss potential mechanisms of action underlying any observed benefits. Evidence to date suggests the consumption of flavonoid-rich foods, such as berries and cocoa, may have the potential to limit, or even reverse, age-related declines in cognition. Over the last 6 years, the flavonoid subgroups of anthocyanins, flavanols, and flavanones have been shown to be beneficial in terms of conferring neuroprotection. The mechanisms by which flavonoids positively modulate cognitive …

High-Intensity Exercise And Cognitive Function In Cognitively Normal Older Adults: A Pilot Randomised Clinical Trial, Belinda M. Brown, Natalie Frost, Stephanie R. Rainey-Smith, James Doecke, Shaun Markovic, Nicole Gordon, Michael Weinborn, Hamid R. Sohrabi, Simon M. Laws, Ralph N. Martins, Kirk I. Erickson, Jeremiah J. Peiffer

Research outputs 2014 to 2021

© 2021, The Author(s). Background: Physical inactivity has been consistently linked to increased risk of cognitive decline; however, studies examining the impact of exercise interventions on cognition have produced inconsistent findings. Some observational studies suggest exercise intensity may be important for inducing cognitive improvements; however, this has yet to be thoroughly examined in older adult cohorts. The objective of the current study was to evaluate the effect of systematically manipulated high-intensity and moderate-intensity exercise interventions on cognition. Methods: This multi-arm pilot randomised clinical trial investigated the effects of 6 months of high-intensity exercise and moderate-intensity exercise, compared with an inactive …

Association Of Dementia With Immunoglobulin G N-Glycans In A Chinese Han Population, Xiaoyu Zhang, Hui Yuan, Jihui Lyu, Xiaoni Meng, Qiuyue Tian, Yuejin Li, Jie Zhang, Xizhu Xu, Jing Su, Haifeng Hou, Dong Li, Baoliang Sun, Wei Wang, Youxin Wang

Research outputs 2014 to 2021

Immunoglobulin G (IgG) functionality can drastically change from anti- to proinflammatory by alterations in the IgG N-glycan patterns. Our previous studies have demonstrated that IgG N-glycans associated with the risk factors of dementia, such as aging, dyslipidemia, type 2 diabetes mellitus, hypertension, and ischemic stroke. Therefore, the aim is to investigate whether the effects of IgG N-glycan profiles on dementia exists in a Chinese Han population. A case–control study, including 81 patients with dementia, 81 age- and gender-matched controls with normal cognitive functioning (NC) and 108 non-matched controls with mild cognitive impairment (MCI) was performed. Plasma IgG N-glycans were separated …

Flavonoid Intake And Incident Dementia In The Danish Diet, Cancer, And Health Cohort, Catherine P. Bondonno, Nicola P. Bondonno, Frederik Dalgaard, Kevin Murray, Samantha L. Gardener, Ralph N. Martins, Stephanie R. Rainey-Smith, Aedín Cassidy, Joshua R. Lewis, Kevin D. Croft, Cecilie Kyrø, Gunnar Gislason, Augustin Scalbert, Anne Tjønneland, Kim Overvad, Jonathan M. Hodgson

Research outputs 2014 to 2021

No abstract provided.

Association Of Β-Amyloid Level, Clinical Progression And Longitudinal Cognitive Change In Normal Older Individuals, Laura M. Van Der Krall, Thanh Truong, Samantha C. Burnham, Vincent Doré, Rachel S. Mulligan, Svetlana Bozinovski, Fiona Lamb, Pierrick Bourgeat, Jurgen Fripp, Stephanie Schultz, Yen Y. Lim, Simon M. Laws, David Ames, Christopher Fowler, Stephanie R. Rainey-Smith, Ralph N. Martins, Olivier Salvado, Joanne Robertson, Paul Maruff, Colin L. Masters, Victor L. Villemagne, Christopher C. Rowe

Research outputs 2014 to 2021

Objective To determine the effect of β-amyloid (Aβ) level on progression risk to mild cognitive impairment (MCI) or dementia and longitudinal cognitive change in cognitively normal (CN) older individuals. Methods All CN from the Australian Imaging Biomarkers and Lifestyle study with Aβ PET and ≥ 3 years follow-up were included (n = 534; age 72 ± 6 years; 27% Aβ positive; follow-up 5.3 ± 1.7 years). Aβ level was divided using the standardized 0–100 Centiloid scale: < 15 CL negative, 15–25 CL uncertain, 26–50 CL moderate, 51–100 CL high, > 100 CL very high, noting > 25 CL approximates a positive scan. Cox proportional hazards analysis and linear mixed effect models were used to assess …

Prevention Of Dementia Using Mobile Phone Applications (Prodemos): Protocol For An International Randomised Controlled Trial, Esmé Eggink, Melanie Hafdi, Marieke P. Hoevenaar-Blom, Manshu Song, Sandrine Andrieu, Linda E. Barnes, Cindy Birck, Rachael L. Brooks, Nicola Coley, Elizabeth Ford, Jean Georges, Abraham Van Der Groep, Willem A. Van Gool, Ron Handels, Haifeng Hou, Dong Li, Hongmei Liu, Jihui Lyu, Harm Van Marwijk, Mark Van Der Meijden, Yixuan Niu, Shanu Sadhwani, Wenzhi Wang, Youxin Wang, Anders Wimo, Xiaoyan Ye, Yueyi Yu, Qiang Zeng, Wei Wang, Carol Brayne, Eric P. Moll Van Charante, Edo Richard

Research outputs 2014 to 2021

Introduction Profiles of high risk for future dementia are well understood and are likely to concern mostly those in low-income and middle-income countries and people at greater disadvantage in high-income countries. Approximately 30%-40% of dementia cases have been estimated to be attributed to modifiable risk factors, including hypertension, smoking and sedentary lifestyle. Tailored interventions targeting these risk factors can potentially prevent or delay the onset of dementia. Mobile health (mHealth) improves accessibility of such prevention strategies in hard-to-reach populations while at the same time tailoring such approaches. In the current study, we will investigate the effectiveness and implementation of a …

Disrupted Sleep And Associated Factors In Australian Dementia Caregivers: A Cross-Sectional Study, Aisling Smyth, Lisa Whitehead, Eimear Quigley, Caroline Vafeas, Laura Emery

Research outputs 2014 to 2021

BACKGROUND: Sleep disturbance is an issue reported by caregivers. Waking at night is a feature of dementia and by proxy, sleep disturbance among caregivers is reported to be high. Little is known about the characteristics of dementia caregivers' sleep and the factors that may influence sleep disruption. The purpose of this study was to investigate the sleep characteristics and disturbances of Australian caregivers of a person living with dementia. In addition, it evaluated the psychological wellbeing of caregivers by evaluating associations between mood and sleep in this population. METHODS: This study used a cross-sectional, descriptive, correlation design. Participants were recruited …

The Peripheral Hearing And Central Auditory Processing Skills Of Individuals With Subjective Memory Complaints, Dona M.P. Jayakody, Holly K. Menegola, Jessica M. Yiannos, Jack Goodman-Simpson, Peter L. Friedland, Kevin Taddei, Simon M. Laws, Michael Weinborn, Ralph N. Martins, Hamid R. Sohrabi

Research outputs 2014 to 2021

© Copyright © 2020 Jayakody, Menegola, Yiannos, Goodman-Simpson, Friedland, Taddei, Laws, Weinborn, Martins and Sohrabi. Purpose: This study examined the central auditory processing (CAP) assessment results of adults between 45 and 85 years of age with probable pre-clinical Alzheimer’s disease – i.e., individuals with subjective memory complaints (SMCs) as compared to those who were not reporting significant levels of memory complaints (non-SMCs). It was hypothesized that the SMC group would perform significantly poorer on tests of central auditory skills compared to participants with non-SMCs (control group). Methods: A total of 95 participants were recruited from the larger Western Australia Memory …

Auditory Electrophysiological Assessments Of Alzheimer's Disease And Preclinical Stages: Protocol For A Systematic Review And Meta-Analysis, Hadeel Y. Tarawneh, Wilhelmina H.A.M. Mulders, Hamid R. Sohrabi, Ralph N. Martins, Dona M.P. Jayakody

Research outputs 2014 to 2021

© Author(s) (or their employer(s)) 2020. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ. Introduction Investigating auditory functions in populations at risk of developing Alzheimer's disease (AD) using auditory neurophysiological measurements can potentially identify a crucial and sensitive diagnostic window of opportunity in preclinical AD. Auditory electrophysiological assessments have gained interest as possible tools for early diagnosis of AD. This paper outlines the protocol that will be used to systematically review the published literature currently available on auditory electrophysiological assessments that have been used to assess the auditory functions of adults over the …

World-Wide Fingers Network: A Global Approach To Risk Reduction And Prevention Of Dementia, Miia Kivipelto, Francesca Mangialasche, Heather M. Snyder, Ricardo Allegri, Sandrine Andrieu, Hidenori Arai, Laura Baker, Sylvie Belleville, Henry Brodaty, Sonia M. Brucki, Ismael Calandri, Paulo Caramelli, Christopher Chen, Howard Chertkow, Effie Chew, Seong H. Choi, Neerja Chowdhary, Lucía Crivelli, Rafael De La Torre, Yifeng Du, Tarun Dua, Mark Espeland, Howard H. Feldman, Maris Hartmanis, Tobias Hartmann, Megan Heffernan, Christiani J. Henry, Chang H. Hong, Krister Hakansson, Takeshi Iwatsubo, Jee H. Jeong, Gustavo Jimenez-Maggiora, Edward H. Khoo, Lenore J. Launer, Jenni Lehtisalo, Francisco Lopera, Pablo Martinez-Lage, Ralph Martins, Lefkos Middleton, Jose L. Molinuevo, Manuel Montero-Odasso, So Y. Moon, Kristal Morales-Perez, Ricardo Nitrini, Haakon B. Nygaard, Yoo K. Park, Markku Peltonen, Chengxuan Qiu, Yakeel T. Quiroz, Rema Raman, Naren Rao, Vijayalakshmi Ravindranath, Anna Rosenberg, Takashi Sakurai, Rosa M. Salinas, Philip Scheltens, Gustavo Sevlever, Hilkka Soininen, Ana L. Sosa, Claudia K. Suemoto, Mikel Tainta-Cuezva, Lina Velilla, Yongxiang Wang, Rachel Whitmer, Xin Xu, Lisa J. Bain, Alina Solomon, Tiia Ngandu, Maria C. Carrillo

Research outputs 2014 to 2021

© 2020 The Authors. Alzheimer's & Dementia published by Wiley Periodicals, Inc. on behalf of Alzheimer's Association Reducing the risk of dementia can halt the worldwide increase of affected people. The multifactorial and heterogeneous nature of late-onset dementia, including Alzheimer's disease (AD), indicates a potential impact of multidomain lifestyle interventions on risk reduction. The positive results of the landmark multidomain Finnish Geriatric Intervention Study to Prevent Cognitive Impairment and Disability (FINGER) support such an approach. The World-Wide FINGERS (WW-FINGERS), launched in 2017 and including over 25 countries, is the first global network of multidomain lifestyle intervention trials for dementia risk …

Causal Association Of Circulating Cholesterol Levels With Dementia: A Mendelian Randomization Meta-Analysis, Xiaoyu Zhang, Qiuyue Tian, Di Liu, Tao Geng, Xizhu Xu, Siqi Ge, Deqiang Zheng, Lijuan Wu, Manshu Song, Haifeng Hou, Wei Wang, Youxin Wang

Research outputs 2014 to 2021

Prospective studies have shown that abnormally circulating cholesterol is associated with the risk of dementia. However, whether the association is causal or not remains unclear. We attempt to infer the causal association in a MR meta-analysis by using ApoE gene polymorphisms as instrument variables. Studies with dementia risk (27 studies) or circulating lipid levels (7 studies) were included, with totally 3136 dementia patients and 3103 healthy controls. The analyses showed that carriers of ε2 allele significantly were of decreased risk of AD (OR = 0.70; 95% CI: 0.58–0.84; P < 0.01), whereas carriers of ε4 allele were of increased risk of AD (OR = 3.62; 95% CI: 3.03–4.32; P < 0.05), compared to these of ε3 allele. Circulating TC was significantly reduced in carriers of ε2 allele (WMD = − 0.29 mmol/L; 95% CI: −0.54 to −0.03; P < 0.05) and increased in carriers of ε4 allele (WMD = 0.42 mmol/l; 95% CI: 0.001–0.84; P < 0.05). In addition, carriers of ε4 allele had reduction in circulating HDL-C (WMD = − 0.04 mmol/L; 95% CI: − 0.07 to −0.001; P < 0.05). In comparing allele ε2 with ε3, the predicted OR of having AD for 1 mg/dL increment in circulating TC was 0.97 (95% CI: 0.86–0.98; P < 0.05). Comparing allele ε4 with ε3, the predicted OR for a 1 mg/dL increment in TC was 1.08 (95% CI: 1.05–17.58; P < 0.05), and reduction in HDL-C was 2.30 (95% CI: 1.51–43.99; P < 0.05). Our findings demonstrate that high circulating TC and reduced HDL-C levels might be potential risk factors of the development of AD.

Bilingualism Is Associated With A Delayed Onset Of Dementia But Not With A Lower Risk Of Developing It: A Systematic Review With Meta-Analyses, Stefano Brini, Hamid R. Sohrabi, Jeffrey J. Hebert, Mitchell R.L. Forrest, Matti Laine, Heikki Hämäläinen, Mira Karrasch, Jeremiah Peiffer, Ralph Martins, Timothy J. Fairchild

Research outputs 2014 to 2021

Some studies have linked bilingualism with a later onset of dementia, Alzheimer’s disease (AD), and mild cognitive impairment (MCI). Not all studies have observed such relationships, however. Differences in study outcomes may be due to methodological limitations and the presence of confounding factors within studies such as immigration status and level of education. We conducted the first systematic review with meta-analysis combining cross-sectional studies to explore if bilingualism might delay symptom onset and diagnosis of dementia, AD, and MCI. Primary outcomes included the age of symptom onset, the age at diagnosis of MCI or dementia, and the risk of developing …

Are Heat Shock Proteins An Important Link Between Type 2 Diabetes And Alzheimer Disease?, Joanne Elizabeth Rowles, Kevin Noel Keane, Thiago Gomes Heck, Vinicius Cruzat, Giuseppe Verdile, Philip Newsholme

Research outputs 2014 to 2021

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. Type 2 diabetes (T2D) and Alzheimer’s disease (AD) are growing in prevalence worldwide. The development of T2D increases the risk of AD disease, while AD patients can show glucose imbalance due to an increased insulin resistance. T2D and AD share similar pathological features and underlying mechanisms, including the deposition of amyloidogenic peptides in pancreatic islets (i.e., islet amyloid polypeptide; IAPP) and brain (β-Amyloid; Aβ). Both IAPP and Aβ can undergo misfolding and aggregation and accumulate in the extracellular space of their respective tissues of origin. As a main response to protein …

The Role Of Adult Day Services In Supporting The Occupational Participation Of People With Dementia And Their Carers: An Integrative Review, Janice Du Preez, J. L. Millsteed, Ruth Marquis, Janet Richmond

Research outputs 2014 to 2021

The increasing numbers of people with dementia places considerable stress on health and aged care services and has resulted in the development of community adult day services. Aim: The aim of this integrative review is to determine the extent to which these services support the occupational participation of people with dementia, and how they impact their primary carers. Method: The mixed-methods appraisal tool (MMAT) was used to identify relevant studies in the period 2011–2016. Results: Nine databases were searched and yielded 16 articles with a variety of research designs for inclusion in the review. Conclusions: Findings …

Impact Of Aging On The Auditory System And Related Cognitive Functions: A Narrative Review, Dona M.P. Jayakody, Pete L. Friedland, Ralph Martins, Hamid R. Sohrabi

Research outputs 2014 to 2021

Age-related hearing loss (ARHL), presbycusis, is a chronic health condition that affects approximately one-third of the world's population. The peripheral and central hearing alterations associated with age-related hearing loss have a profound impact on perception of verbal and non-verbal auditory stimuli. The high prevalence of hearing loss in the older adults corresponds to the increased frequency of dementia in this population. Therefore, researchers have focused their attention on age-related central effects that occur independent of the peripheral hearing loss as well as central effects of peripheral hearing loss and its association with cognitive decline and dementia. Here we review the …

Alzheimer's Disease: A Journey From Amyloid Peptides And Oxidative Stress, To Biomarker Technologies And Disease Prevention Strategies-Gains From Aibl And Dian Cohort Studies, Ralph Martins, Victor Villemagnen, Hamid R. Sohrabi, Pratishtha Chatterjee, Tejal M. Shah, Giuseppe Verdile, Paul Fraser, Kevin Taddei, Veer Gupta, Stephanie Rainey-Smith, Eugene Hone, Steve Pedrini, Wei L. Lim, Ian Martins, Shaun Frost, Sunil Gupta, Sid O’Bryant, Alan Rembach, David Ames, Kathryn Ellis, Stephanie J. Fuller, Belinda Brown, Samantha Gardener, Binosha Fernando, Prashant Bharadwaj, Samantha Burnham, Simon Laws, Anna M. Barron, Kathryn Goozee, Eka J. Wahjoepramono, Prita R. Asih, James D. Doecke, Olivier Salvado, Ashley I. Bush, Christopher C. Rowe, Samuel E. Gandy, Colin L. Masters

Research outputs 2014 to 2021

Worldwide there are over 46 million people living with dementia, and this number is expected to double every 20 years reaching about 131 million by 2050. The cost to the community and government health systems, as well as the stress on families and carers is incalculable. Over three decades of research into this disease have been undertaken by several research groups in Australia, including work by our original research group inWestern Australia which was involved in the discovery and sequencing of the amyloid-β peptide (also known as Aβ or A4 peptide) extracted from cerebral amyloid plaques. This review discusses the …

Possible Role Of Common Spices As A Preventive And Therapeutic Agent For Alzheimer's Disease, Omid Mirmosayyeb, Amirpouya Tanhaei, Hamid R. Sohrabi, Ralph Martins, Mana Tanhaei, Mohammad Admin Najaf, Ali Safaei, Rokhsareh Meamar

Research outputs 2014 to 2021

For centuries, spices have been consumed as food additives or medicinal agents. However, there is increasing evidence indicating the plant-based foods in regular diet may lower the risk of neurodegenerative diseases including Alzheimer disease. Spices, as one of the most commonly used plant-based food additives may provide more than just flavors, but as agents that may prevent or even halt neurodegenerative processes associated with aging. In this article, we review the role and application of five commonly used dietary spices including saffron turmeric, pepper family, zingiber, and cinnamon. Besides suppressing inflammatory pathways, these spices may act as antioxidant and inhibit …

Study Protocol Of The Intense Physical Activity And Cognition Study: The Effect Of High-Intensity Exercise Training On Cognitive Function In Older Adults, Belinda M. Brown, Stephanie Rainey-Smith, Natalie Castalanelli, Nicole Gordon, Shaun Markovic, Hamid R. Sohrabi, Michael Weinborn, Simon Laws, James Doecke, Kaikai Shen, Ralph Martins, Jeremiah J. Peiffer

Research outputs 2014 to 2021

Introduction:

Inconsistent results from previous studies of exercise and cognitive function suggest that rigorously designed randomized controlled trials are urgently needed. Here, we describe the design of the Intense Physical Activity and Cognition (IPAC) study, which will assess the impact of a 6-month high-intensity exercise intervention on cognitive function and biomarkers of dementia risk, compared with a 6-month moderate-intensity exercise intervention and control group (no study-related exercise).

Methods:

One-hundred and five cognitively healthy men and women aged between 60 and 80 years are randomized into a high-intensity exercise, moderate-intensity exercise, or control group. Individuals randomized to an exercise …

Finding Chemopreventatives To Reduce Amyloid Beta In Yeast, Ian Macreadie, Costa Arvanitis, Prashant Bharadwaj

Research outputs 2014 to 2021

Alzheimer's disease (AD) is the most common form of age-related dementia with the latest report (WorldAlzheimerReport, 2015) showing 46.8 million people are currently affected by dementia. That number is expected to double every 20 years unless there is effective therapeutic intervention.

The Effects Of Testosterone Supplementation On Cognitive Functioning In Older Men, Eka Wahjoepramono, Prita Asih, Vilia Aniwiyanti, Kevin Taddei, Satvinder Dhaliwal, Stephanie Fuller, Jonathan Foster, Malcolm Carruthers, Giuseppe Verdile, Hamid R. Sohrabi, Ralph Martins

Research outputs 2014 to 2021

Reduction in testosterone levels in men during aging is associated with cognitive decline and risk of dementia. Animal studies have shown benefits for testosterone supplementation in improving cognition and reducing Alzheimer’s disease pathology. In a randomized, placebo-controlled, crossover study of men with subjective memory complaint and low testosterone levels, we investigated whether testosterone treatment significantly improved performance on various measures of cognitive functioning. Forty-four men were administered a battery of neuropsychological tests to establish the baseline prior to being randomly divided into two groups. The first group (Group A) received 24 weeks of testosterone treatment (T treatment) followed by 4 …

Guidelines For The Standardization Of Preanalytic Variables For Blood-Based Biomarker Studies In Alzheimer's Disease Research, Sid O'Bryant, Veer Gupta, Kim Henriksen, Melissa Edwards, Andreas Jeromin, Simone Lista, Chantal Bazenet, Holly Soares, Simon Lovestone, Harald Hampel, Thomas Montine, Kaj Blennow, Tatiana Foroud, Maria Carrillo, Neill Graff-Radford, Christoph Laske, Monique Breteler, Leslie Shaw, John Q. Trojanowski, Nicole Schupf, Robert A. Rissman, Anne M. Fagan, Pankaj Oberoi, Robert Umek, Michael W. Weiner, Paula Grammas, Holly Posner, Ralph Martins

Research outputs 2014 to 2021

The lack of readily available biomarkers is a significant hindrance toward progressing to effective therapeutic and preventative strategies for Alzheimer's disease (AD). Blood-based biomarkers have potential to overcome access and cost barriers and greatly facilitate advanced neuroimaging and cerebrospinal fluid biomarker approaches. Despite the fact that preanalytical processing is the largest source of variability in laboratory testing, there are no currently available standardized preanalytical guidelines. The current international working group provides the initial starting point for such guidelines for standardized operating procedures (SOPs). It is anticipated that these guidelines will be updated as additional research findings become available. The statement …

The Global Obesity Epidemic Is Related To Stroke, Dementia And Alzheimer's Disease, Ian J. Martins

Research outputs 2014 to 2021

The global epidemic in obesity and diabetes has affected individuals in both the developing and developed world with the global death rate (63%) related to chronic diseases with 35% attributed to cardiovascular disease and stroke, 21 % to cancer and 12 % to chronic respiratory disease. The interest in connections between the global stroke epidemic, dementia and Alzheimer’s disease (AD) has increased with hypertension, smoking, diabetes, obesity, poor diet, physical inactivity, atrial fibrillation, excessive alcohol consumption, abnormal lipid profile and psychosocial stress/depression implicated in their pathogenesis. The connection between stroke and AD is possibly related to the low adiponectin and …

Anxiety Symptoms, Cerebral Amyloid Burden And Memory Decline In Healthy Older Adults Without Dementia: 3-Year Prospective Cohort Study, Robert H. Pietrzak, J C. Scott, Alexander Neumeister, Yen Ying Lim, David Ames, Kathyrn A. Ellis, Kara Harrington, Nicola T. Lautenschlager, Cassandra Szoeke, Ralph Martins, Colin L. Masters, Victor L. Villemagne, Christopher C. Rowe, Paul Maruff

Research outputs 2014 to 2021

Although beta-amyloid, anxiety and depression have been linked cross-sectionally to reduced memory function in healthy older adults without dementia, prospective data evaluating these associations are lacking. Using data from an observational cohort study of 178 healthy older adults without dementia followed for 3 years, we found that anxiety symptoms significantly moderated the relationship between beta-amyloid level and decline in verbal (Cohen's d = 0.65) and episodic (Cohen's d = 0.38) memory. Anxiety symptoms were additionally linked to greater decline in executive function, irrespective of beta-amyloid and other risk factors. These findings suggest that interventions to mitigate anxiety symptoms may help …