Article
Biochemistry & Molecular Biology
Rahim Ullah, Gowhar Ali, Ajmal Khan, Sajjad Ahmad, Ahmed Al-Harrasi
Summary: The study investigated the effects of 3NCP on AD using 5xFAD mouse models, showing potential therapeutic effects in reducing amyloid plaques and improving learning and memory. In vivo studies demonstrated that 3NCP did not induce anxiety, significantly reduced beta-amyloid plaques, and decreased BACE-1 expression in the brain tissues. This suggests that 3NCP may be a promising candidate for future AD treatment.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Biochemistry & Molecular Biology
Xueying Zhong, Rakesh Kumar, Yu Wang, Henrik Biverstal, Caroline Ingeborg Jegerschoeld, Philip J. B. Koeck, Jan Johansson, Axel Abelein, Gefei Chen
Summary: This study demonstrates that the Bri2 BRICHOS protein efficiently inhibits the aggregation of the highly aggregation-prone variant A beta(arc), resulting in delayed fibril formation. The protein interferes with A beta aggregation by affecting secondary nucleation and fibril end elongation.
ACS CHEMICAL BIOLOGY
(2022)
Article
Neurosciences
Samaneh Safari, Naser Mirazi, Nesa Ahmadi, Masoumeh Asadbegi, Alireza Nourian, Masome Rashno, Alireza Komaki
Summary: The study aimed to investigate the potential protective effects of policosanol (PCO) on spatial cognitive capacity, long-term potentiation (LTP) induction, oxidant/antioxidant status, and Aβ plaque formation in an Alzheimer's disease (AD) rat model. The results showed that PCO treatment improved spatial learning and memory abilities, synaptic plasticity, antioxidant status, and inhibited Aβ plaque accumulation in the AD rats.
PSYCHOPHARMACOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Joseph M. Schrader, Feng Xu, William E. Van Nostrand
Summary: Cerebral amyloid angiopathy (CAA) is a prevalent cerebral small vessel disease in the elderly and is often comorbid with Alzheimer's disease. This study investigated proteome changes associated with specific pathological features in different brain regions of rTg-DI rats, a preclinical model of CAA. The results showed varying levels of CAA and associated pathologies in different brain regions, with specific molecular pathways implicated in each region.
JOURNAL OF NEUROCHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Mohammed Amir Husain, Annick Vachon, Raphael Chouinard-Watkins, Milene Vandal, Frederic Calon, Melanie Plourde
Summary: The metabolism of docosahexaenoic acid (DHA) is different in APOE4 carriers, and it affects cognitive performance. There is a plasma-liver-brain axis of DHA in APOE4 mice, which is influenced by genotype and diet. APOE4 mice rely more on plasma DHA, especially in cognitive performance.
JOURNAL OF NUTRITIONAL BIOCHEMISTRY
(2023)
Article
Neurosciences
Qing Xia, XinYu Yang, JiaBin Shi, ZiJie Liu, YaHui Peng, WenJing Wang, BoWen Li, Yu Zhao, JiaYing Xiao, Lei Huang, DaYong Wang, Xu Gao
Summary: Alzheimer's disease is a neurodegenerative disorder characterized by abnormal accumulation of amyloid beta peptides and Tau protein in the brain. Mutations in amyloid precursor protein gene can cause familial Alzheimer's disease, but the A673T mutation shows protective effects against it.
MOLECULAR NEUROBIOLOGY
(2021)
Article
Neurosciences
Mahshid Badrikoohi, Aghil Esmaeili-bandboni, Parvin Babaei
Summary: The combination treatment of JQ1 and MS-275 improves spatial and aversive memory impairment in a rat model of Alzheimer's disease. This improvement may be achieved partly through CREB and TNF-α signaling, and there is no superiority of combination therapy over monotherapy.
BRAIN RESEARCH BULLETIN
(2022)
Article
Biochemistry & Molecular Biology
Silvia Zampar, Oliver Wirths
Summary: The relationship between extracellular amyloid-beta deposits and intracellular accumulation of hyperphosphorylated tau in Alzheimer's Disease (AD) remains not fully understood. Studies have shown that A beta deposits trigger tau phosphorylation and accumulation, but the impact of different A beta variants on tau pathology is still debated. Crossbreeding studies on transgenic mouse models suggest that A beta(4-42) peptides may have partial negative effects on motor performance and spatial memory in aged mice.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Cell Biology
Francheska Delgado-Peraza, Carlos J. Nogueras-Ortiz, Olga Volpert, Dong Liu, Edward J. Goetzl, Mark P. Mattson, Nigel H. Greig, Erez Eitan, Dimitrios Kapogiannis
Summary: The study found that biomarkers in circulating NEVs and AEVs reflect their brain levels across multiple AD mouse models, supporting their potential use as a liquid biopsy for neurological disorders. This demonstrates a potential for utilizing EV proteins as AD biomarkers and emphasizes the importance of further research in this area.
Article
Chemistry, Medicinal
Kancharla Bhanukiran, T. A. Gajendra, Sairam Krishnamurthy, Sushil Kumar Singh, Siva Hemalatha
Summary: Vasicine, isolated from Adhatoda vasica, was used as a synthetic precursor to prepare semisynthetic analogs for Alzheimer's disease treatment. Compound VA10 exhibited stable interactions, inhibited cholinesterase activity, and reduced amyloid-beta plaques. It also showed neuroprotective properties and no notable cytotoxicity. Therefore, compound VA10 is a potential lead compound for anti-AD development.
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
(2023)
Article
Geriatrics & Gerontology
Hoda Nikookar, Mohammad Haddadi, Mehrnaz Haghi, Raheleh Masoudi
Summary: This study explored the impact of amyloid plaques and neurofibrillary tangles on cognitive decline in Alzheimer's disease. The findings suggest that both A beta and pathological tau contribute to reduced BDNF expression, leading to increased ROS production and sensitivity to ethanol. The results indicate that pathological tau might have a greater effect on ROS production compared to A beta in transgenic flies, emphasizing the importance of investigating the interplay between BDNF and oxidative stress in AD pathology.
ARCHIVES OF GERONTOLOGY AND GERIATRICS
(2021)
Review
Biochemistry & Molecular Biology
Anna Bubley, Alexaner Erofeev, Peter Gorelkin, Elena Beloglazkina, Alexander Majouga, Olga Krasnovskaya
Summary: Alzheimer's disease (AD) is a neurodegenerative disorder characterized by Aβ aggregation, tau hyperphosphorylation, and loss of cholinergic neurons. AD is also associated with oxidative stress, metal dyshomeostasis, inflammation, and cell cycle dysregulation. In this review, THA-based hybrids are summarized as potential anti-AD agents, highlighting strategies for drug design that have led to cognitive improvements and reduced hepatotoxicity.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Geriatrics & Gerontology
Lianne A. Hulshof, Leon A. Frajmund, Danny van Nuijs, Denise C. N. van der Heijden, Jinte Middeldorp, Elly M. Hol
Summary: Through a series of memory tests, the researchers determined that the Barnes maze task is better suited for studying subtle learning and memory deficits in 9-month-old APPswe/PS1dE9 mice. The test revealed deficits in spatial memory and cognitive flexibility in the APPswe/PS1dE9 mice compared to wildtype littermates. Additionally, there were no sex-dependent memory deficit differences in this AD mouse model at this age.
NEUROBIOLOGY OF AGING
(2022)
Article
Neurosciences
Marina Celestine, Muriel Jacquier-Sarlin, Eve Borel, Fanny Petit, Jean-Baptiste Perot, Anne-Sophie Herard, Luc Bousset, Alain Buisson, Marc Dhenain
Summary: Alzheimer's disease is characterized by abnormal protein deposition in the brain, leading to synaptic dysfunction and cognitive decline. This study aimed to investigate the impact of a single inoculation of mutated A ss on AD pathology and clinical outcome. The findings suggest that this sporadic event can worsen the disease progression and cognitive impairments months later, indicating a long-lasting cascade of events.
ACTA NEUROPATHOLOGICA COMMUNICATIONS
(2023)
Review
Neurosciences
Zhenwei Zhai, Danni Xie, Tao Qin, Yanmei Zhong, Ying Xu, Tao Sun
Summary: This meta-analysis found that melatonin can improve learning ability and memory deficits in Alzheimer's disease (AD) models, mainly by reducing the deposition of A840 and A842 in the cortex.
Article
Clinical Neurology
Carlo Wilke, Selina Reich, John C. van Swieten, Barbara Borroni, Raquel Sanchez-Valle, Fermin Moreno, Robert Laforce, Caroline Graff, Daniela Galimberti, James B. Rowe, Mario Masellis, Maria C. Tartaglia, Elizabeth Finger, Rik Vandenberghe, Alexandre de Mendonca, Fabrizio Tagliavini, Isabel Santana, Simon Ducharme, Chris R. Butler, Alexander Gerhard, Johannes Levin, Adrian Danek, Markus Otto, Giovanni Frisoni, Roberta Ghidoni, Sandro Sorbi, Martina Bocchetta, Emily Todd, Jens Kuhle, Christian Barro, Jonathan D. Rohrer, Matthis Synofzik
Summary: This study provides a biomarker cascade for the conversion stage in presymptomatic frontotemporal dementia, using serum neurofilament levels to stratify individuals in different stages and potentially identify those converting to symptomatic disease. The biomarker cascade may pave the way towards a biomarker-based precision medicine approach to genetic FTD.
ANNALS OF NEUROLOGY
(2022)
Article
Clinical Neurology
Yang Yang, Wenjuan Zhang, Alexey G. Murzin, Manuel Schweighauser, Melissa Huang, Sofia Lovestam, Sew Y. Peak-Chew, Takashi Saito, Takaomi C. Saido, Jennifer Macdonald, Isabelle Lavenir, Bernardino Ghetti, Caroline Graff, Amit Kumar, Agneta Nordberg, Michel Goedert, Sjors H. W. Scheres
Summary: The high-resolution cryo-EM structures of A beta filaments with the Arctic mutation were reported in this study. Most of the filaments consist of two pairs of non-identical protofilaments, sharing a common substructure with the folds of type I and type II A beta 42. There are subtle conformational changes in the human Arctic folds, which may be due to the lack of a side chain at G22.
ACTA NEUROPATHOLOGICA
(2023)
Article
Clinical Neurology
David J. Whiteside, Maura Malpetti, P. Simon Jones, Boyd C. P. Ghosh, Ian Coyle-Gilchrist, John C. van Swieten, Harro Seelaar, Lize Jiskoot, Barbara Borroni, Raquel Sanchez-Valle, Fermin Moreno, Robert Laforce, Caroline Graff, Matthis Synofzik, Daniela Galimberti, Mario Masellis, Maria Carmela Tartaglia, Elizabeth Finger, Rik Vandenberghe, Alexandre de Mendonca, Fabrizio Tagliavini, Chris R. Butler, Isabel Santana, Isabelle Le Ber, Alexander Gerhard, Simon Ducharme, Johannes Levin, Adrian Danek, Markus Otto, Sandro Sorbi, Florence Pasquier, Arabella Bouzigues, Lucy L. Russell, Jonathan D. Rohrer, James B. Rowe, Timothy Rittman
Summary: This study investigated the role of changes in functional networks in predicting cognitive decline and conversion to symptomatic disease in familial frontotemporal dementia (FTD). The study found a characteristic pattern of dynamic network changes in FTD, which were correlated with neuropsychological impairment. Among presymptomatic mutation carriers, this pattern of network dynamics was more prominent in those who later converted to the symptomatic phase. Baseline network dynamic changes predicted future cognitive decline in symptomatic participants and older presymptomatic participants.
ALZHEIMERS & DEMENTIA
(2023)
Article
Clinical Neurology
Elizabeth Finger, Rubina Malik, Martina Bocchetta, Kristy Coleman, Caroline Graff, Barbara Borroni, Mario Masellis, Robert Laforce, Caroline Greaves, Lucy L. Russell, Rhian S. Convery, Arabella Bouzigues, David M. Cash, Markus Otto, Matthis Synofzik, James B. Rowe, Daniela Galimberti, Pietro Tiraboschi, Robert Bartha, Christen Shoesmith, Maria Carmela Tartaglia, John C. van Swieten, Harro Seelaar, Lize C. Jiskoot, Sandro Sorbi, Chris R. Butler, Alexander Gerhard, Raquel Sanchez-Valle, Alexandre de Mendonca, Fermin Moreno, Rik Vandenberghe, Isabelle Le Ber, Johannes Levin, Florence Pasquier, Isabel Santana, Jonathan D. Rohrer, Simon Ducharme
Summary: This study investigates the hypothesis that genetic mutations causing frontotemporal dementia (FTD) have neurodevelopmental consequences. The researchers examined brain structure and function in young adult mutation carriers and found differences between preclinical mutation carriers and familial non-carriers at a mean age of 26 years. These findings have implications for therapeutic interventions and further studies on early pathophysiologic processes in FTD.
Article
Clinical Neurology
Charlotte Johansson, Steinunn Thordardottir, Jose Laffita-Mesa, Elena Rodriguez-Vieitez, Henrik Zetterberg, Kaj Blennow, Caroline Graff
Summary: The study describes plasma biomarkers in a Swedish cohort of patients with monogenic Alzheimer's disease. Plasma GFAP increases before P-tau181 and NfL, indicating that it reflects early Alzheimer's disease pathology. Plasma biomarkers may be non-invasive tools to detect Alzheimer's disease-related abnormalities. However, further validation is needed.
Article
Clinical Neurology
Kiran Samra, Amy M. MacDougall, Arabella Bouzigues, Martina Bocchetta, David M. Cash, Caroline Greaves, Rhian S. Convery, John C. van Swieten, Harro Seelaar, Lize Jiskoot, Fermin Moreno, Raquel Sanchez-Valle, Robert Laforce, Caroline Graff, Mario Masellis, Maria Carmela Tartaglia, James B. Rowe, Barbara Borroni, Elizabeth Finger, Matthis Synofzik, Daniela Galimberti, Rik Vandenberghe, Alexandre de Mendonca, Christopher R. Butler, Alexander Gerhard, Simon Ducharme, Isabelle Le Ber, Pietro Tiraboschi, Isabel Santana, Florence Pasquier, Johannes Levin, Markus Otto, Sandro Sorbi, Jonathan D. Rohrer, Lucy L. Russell
Summary: The study found that about 76% of patients with genetic bvFTD have language impairments, characterized by impaired functional communication, decreased fluency, and impaired sentence comprehension. There are differences in the extent of brain atrophy in specific language regions and language symptoms among different genetic types of patients. This research is helpful for further understanding the language phenotype associated with genetic bvFTD, especially in accurate stratification and monitoring of disease progression in clinical trials.
JOURNAL OF NEUROLOGY
(2023)
Article
Clinical Neurology
Agnes Perez-Millan, Sergi Borrego-Ecija, John C. van Swieten, Lize Jiskoot, Fermin Moreno, Robert Laforce, Caroline Graff, Mario Masellis, Maria Carmela Tartaglia, James B. Rowe, Barbara Borroni, Elizabeth Finger, Matthis Synofzik, Daniela Galimberti, Rik Vandenberghe, Alexandre de Mendonca, Chris R. Butler, Alexander Gerhard, Simon Ducharme, Isabelle Le Ber, Isabel Santana, Florence Pasquier, Johannes Levin, Markus Otto, Sandro Sorbi, Pietro Tiraboschi, Harro Seelaar, Tobias Langheinrich, Jonathan D. Rohrer, Roser Sala-Llonch, Raquel Sanchez-Valle
Summary: The C9orf72 expansion is a common genetic cause of frontotemporal dementia and/or motor neuron disease. MRI analysis showed differences in white matter volumes between presymptomatic and symptomatic carriers, suggesting that this measure may be useful in predicting symptom onset. Additionally, clinical severity was negatively associated with white matter volume.
JOURNAL OF NEUROLOGY
(2023)
Article
Clinical Neurology
Kiran Samra, Amy M. MacDougall, Georgia Peakman, Arabella Bouzigues, Martina Bocchetta, David M. Cash, Caroline Greaves, Rhian S. Convery, John C. van Swieten, Lize Jiskoot, Harro Seelaar, Fermin Moreno, Raquel Sanchez-Valle, Robert Laforce, Caroline Graff, Mario Masellis, Carmela Tartaglia, James B. Rowe, Barbara Borroni, Elizabeth Finger, Matthis Synofzik, Daniela Galimberti, Rik Vandenberghe, Alexandre de Mendonca, Chris R. Butler, Alexander Gerhard, Simon Ducharme, Isabelle Le Ber, Pietro Tiraboschi, Isabel Santana, Florence Pasquier, Johannes Levin, Markus Otto, Sandro Sorbi, Jonathan D. Rohrer, Lucy L. Russell
Summary: This study investigated the optimal method of adding motor features to a clinical rating scale for frontotemporal dementia (FTD). The results showed that motor symptoms are present in mutation carriers at all disease stages, and including motor symptoms in a rating scale can provide a more accurate assessment of disease severity and incorporate a wider spectrum of FTD phenotypes in the same clinical trial.
JOURNAL OF NEUROLOGY
(2023)
Article
Clinical Neurology
Kiran Samra, Amy Macdougall, Georgia Peakman, Arabella Bouzigues, Martina Bocchetta, David M. Cash, Caroline Greaves, Rhian S. Convery, John C. van Swieten, Lize C. Jiskoot, Harro Seelaar, Fermin Moreno, Raquel Sanchez-Valle, Robert Laforce, Caroline Graff, Mario Masellis, Maria Carmela Tartaglia, James B. Rowe, Barbara Borroni, Elizabeth Finger, Matthis Synofzik, Daniela Galimberti, Rik Vandenberghe, Alexandre de Mendonca, Christopher R. Butler, Alexander Gerhard, Simon Ducharme, Isabelle Le Ber, Pietro Tiraboschi, Isabel Santana, Florence Pasquier, Johannes Levin, Markus Otto, Sandro Sorbi, Jonathan D. Rohrer, Lucy L. Russell
Summary: A study on frontotemporal dementia found that neuropsychiatric symptoms occur in mutation carriers at all disease stages, with hallucinations and delusions providing additional staging benefit. The inclusion of these features in rating scales could improve the evaluation of disease progression.
JOURNAL OF NEUROLOGY NEUROSURGERY AND PSYCHIATRY
(2023)
Article
Clinical Neurology
Giancarlo Logroscino, Marco Piccininni, Caroline Graff, Orla Hardiman, Albert C. Ludolph, Fermin Moreno, Markus Otto, Anne M. Remes, James B. Rowe, Harro Seelaar, Eino Solje, Elka Stefanova, Latchezar Traykov, Vesna Jelic, Melissa Taheri Rydell, Niall Pender, Sarah Anderl-Straub, Myriam Barandiaran, Alazne Gabilondo, Johanna Kruger, Alexander G. Murley, Timothy Rittman, Emma L. van der Ende, John C. van Swieten, Paeivi Hartikainen, Gorana Mandic Stojmenovic, Shima Mehrabian, Luisa Benussi, Antonella Alberici, Maria Teresa Dell'Abate, Chiara Zecca, Barbara Borroni
Summary: This study examined the incidence of frontotemporal lobar degeneration (FTLD)-associated syndromes in Europe and found that they are more common than previously recognized, warranting diagnosis at any age. The findings have important implications for health and social care planning, as well as the design of future clinical trials.
Article
Clinical Neurology
Kiran Samra, Amy M. MacDougall, Arabella Bouzigues, Martina Bocchetta, David M. Cash, Caroline Greaves, Rhian S. Convery, Chris Hardy, John C. van Swieten, Harro Seelaar, Lize C. Jiskoot, Fermin Moreno, Raquel Sanchez-Valle, Robert Laforce, Caroline Graff, Mario Masellis, Maria Carmela Tartaglia, James B. Rowe, Barbara Borroni, Elizabeth Finger, Matthis Synofzik, Daniela Galimberti, Rik Vandenberghe, Alexandre de Mendonca, Chris R. Butler, Alexander Gerhard, Simon Ducharme, Isabelle Le Ber, Isabel Santana, Florence Pasquier, Johannes Levin, Markus Otto, Sandro Sorbi, Jason D. Warren, Jonathan D. Rohrer, Lucy L. Russell
Summary: Samra et al. report that progranulin mutations are the most common genetic cause of primary progressive aphasia, with two subtypes observed. Revised criteria for primary progressive aphasia should take into account genetic phenotypes. Primary progressive aphasia is typically sporadic, but can also be genetic.
BRAIN COMMUNICATIONS
(2023)
Article
Clinical Neurology
Martina Bocchetta, Emily G. Todd, Arabella Bouzigues, David M. Cash, Jennifer M. Nicholas, Rhian S. Convery, Lucy L. Russell, David L. Thomas, Ian B. Malone, Juan Eugenio Iglesias, John C. van Swieten, Lize C. Jiskoot, Harro Seelaar, Barbara Borroni, Daniela Galimberti, Raquel Sanchez-Valle, Robert Laforce, Fermin Moreno, Matthis Synofzik, Caroline Graff, Mario Masellis, Maria Carmela Tartaglia, James B. Rowe, Rik Vandenberghe, Elizabeth Finger, Fabrizio Tagliavini, Alexandre de Mendonca, Isabel Santana, Chris R. Butler, Simon Ducharme, Alexander Gerhard, Adrian Danek, Johannes Levin, Markus Otto, Sandro Sorbi, Isabelle Le Ber, Florence Pasquier, Jonathan D. Rohrer
Summary: The study quantified brain anomalies on MRI in individuals with C9orf72, MAPT, and GRN mutations. The identified imaging markers associated with clinical and behavioral changes in presymptomatic carriers over one year, providing important data for participant stratification in trials. Biomarkers predicting disease progression in genetic frontotemporal dementia are urgently needed.
BRAIN COMMUNICATIONS
(2023)
Meeting Abstract
Biochemistry & Molecular Biology
Emma Ehn, Jesper Eisfeldt, Hakan Thonberg, Jose Laffita, Jacqueline Schoumans, Anne Remes, Matti Viitanen, Anna Lindstrand, Inger Nennesemo, Caroline Graff
EUROPEAN JOURNAL OF HUMAN GENETICS
(2023)
Meeting Abstract
Clinical Neurology
S. Schoenecker, F. J. Martinez-Murcia, N. Franzmeier, J. Denecke, A. Bernhard, O. Wagemann, E. Wlasich, G. U. Hoeglinger, J. C. Van Swieten, F. Moreno, M. Otto, R. Laforce, C. Graff, M. Masellis, M. Carmela Tartaglia, J. B. Rowe, B. Borroni, E. Finger, M. Synofzik, D. Galimberti, R. Vandenberghe, A. De Mendonca, S. Ducharme, J. D. Rohrer, J. Levin
EUROPEAN JOURNAL OF NEUROLOGY
(2023)
Meeting Abstract
Clinical Neurology
Giancarlo Logroscino, Marco Piccininni, Caroline Graff, Orla Hardiman, Albert Ludolph, Fermin Moreno, Markus Otto, Anne Remes, James Rowe, Harro Seelaar, Eino Solje, Elka Stefanova, Latchezar Traykov, Vesna Jelic, Melissa Thaeri Rydell, Niall Pender, Sarah Anderl-Straub, Myriam Barandiaran, Alazne Gabilondo, Johanna Kruger, Alexander Murley, Timothy Rittman, Emma L. Van der Ende, John Van Swieten, Paivi Hartikainen, Gorana Mandic Stojmenovic, Shima Meherabian, Luisa Benussi, Antonella Alberici, Maria Teresa Dell'Abate, Chiara Zecca, Barbara Borroni
Article
Geriatrics & Gerontology
Sarah N. Kraeutner, Cristina Rubino, Jennifer K. Ferris, Shie Rinat, Lauren Penko, Larissa Chiu, Brian Greeley, Christina B. Jones, Beverley C. Larssen, Lara A. Boyd
Summary: This study examined the age-related changes in brain function and baseline brain structure that support motor skill acquisition. The findings showed that older adults experienced decreases in functional connectivity during motor skill acquisition, while younger adults experienced increases. Additionally, regardless of age group, lower baseline microstructure in a frontoparietal tract was associated with slower motor skill acquisition.
NEUROBIOLOGY OF AGING
(2024)
Article
Geriatrics & Gerontology
Karen Nuytemans, Farid Rajabli, Melissa Jean-Francois, Jiji Thulaseedhara Kurup, Larry D. Adams, Takiyah D. Starks, Patrice L. Whitehead, Brian W. Kunkle, Allison Caban-Holt, Jonathan L. Haines, Michael L. Cuccaro, Jeffery M. Vance, Goldie S. Byrd, Gary W. Beecham, Christiane Reitz, Margaret A. Pericak-Vance
Summary: This study conducted genetic research on African American AD families and identified a significant linkage signal associated with AD, highlighting the importance of diverse population-level genetic data in understanding the genetic determinants of AD.
NEUROBIOLOGY OF AGING
(2024)
Article
Geriatrics & Gerontology
Kazuya Suwabe, Ryuta Kuwamizu, Kazuki Hyodo, Toru Yoshikawa, Takeshi Otsuki, Asako Zempo-Miyaki, Michael A. Yassa, Hideaki Soya
Summary: Physical exercise has a positive impact on hippocampal memory decline with aging. Recent studies have shown that even light exercise can improve memory and this improvement is mediated by the ascending arousal system. This study aimed to investigate the effects of light-intensity exercise on hippocampal memory function in healthy older adults and found that pupil dilation during exercise played a role in the memory improvement.
NEUROBIOLOGY OF AGING
(2024)
Article
Geriatrics & Gerontology
Ajay Sood, Ana Werneck Capuano, Robert Smith Wilson, Lisa Laverne Barnes, Alifiya Kapasi, David Alan Bennett, Zoe Arvanitakis
Summary: The objective of this study was to explore the impact of metformin on cognition and brain pathology. The results showed that metformin users had slower decline in global cognition, episodic memory, and semantic memory compared to non-users. However, the relationship between metformin use and certain brain pathology remains uncertain.
NEUROBIOLOGY OF AGING
(2024)
Article
Geriatrics & Gerontology
Brian N. Lee, Junwen Wang, Molly A. Hall, Dokyoon Kim, Shana D. Stites, Li Shen
Summary: Alzheimer's disease (AD) is a neurodegenerative disorder characterized by memory and functional impairments. This study analyzed participants from the Alzheimer's Disease Neuroimaging Initiative and found differential associations between cerebral spinal fluid (CSF)/neuroimaging biomarkers and cognitive/functional outcomes, as well as variations between sexes. These findings suggest that sex differences may play a role in the development of AD.
NEUROBIOLOGY OF AGING
(2024)
Article
Geriatrics & Gerontology
Madeline R. Hale, Rebecca Langhough, Lianlian Du, Bruce P. Hermann, Carol A. Van Hulle, Margherita Carboni, Gwendlyn Kollmorgenj, Kristin E. Basche, Davide Bruno, Leah Sanson-Miles, Erin M. Jonaitis, Nathaniel A. Chin, Ozioma C. Okonkwo, Barbara B. Bendlin, Cynthia M. Carlsson, Henrik Zetterberg, Kaj Blennow, Tobey J. Betthauser, Sterling C. Johnson, Kimberly D. Mueller
Summary: This study demonstrates a relationship between cerebrospinal fluid biomarkers and the ability to recall proper names in the preclinical phase of Alzheimer's disease.
NEUROBIOLOGY OF AGING
(2024)
Article
Geriatrics & Gerontology
Thomas T. Austin, Christian L. Thomas, Ben Warren
Summary: This study investigated the effects of age on the robustness and resilience of auditory system using the desert locust. The researchers found that gene expression changes were mainly influenced by age rather than noise exposure. Both young and aged locusts were able to recover their auditory nerve function within 48 hours of noise exposure, but the recovery of transduction current magnitude was impaired in aged locusts. Key genes responsible for robustness to noise exposure in young locusts and potential candidates for compensatory mechanisms in auditory neurons of aged locusts were identified.
NEUROBIOLOGY OF AGING
(2024)