Timothy Daly
Maintaining diversity in drug development in research into Alzheimer's disease (AD) is necessary to avoid over-reliance on targeting AD neuropathology. Treatments that reduce or prevent the generation of oxidative stress, frequently cited for its causal role in the aging process and AD, could be useful in at-risk populations or diagnosed AD patients. However, in this review, it is argued that clinical research into antioxidants in AD could provide more useful feedback as to the therapeutic value of the oxidative stress theory of AD...
September 28, 2023: Journal of Alzheimer's Disease: JAD
Jean Ikanga, Sabrina Hickle, Megan Schwinne, Emmanuel Epenge, Guy Gikelekele, Immaculee Kavugho, Nathan Tsengele, Mampunza Samuel, Liping Zhao, Deqiang Qiu, Anthony Stringer, Amit M Saindane, Alvaro Alonso, Daniel L Drane
BACKGROUND: Western studies indicate potential associations between hippocampal volume and memory in the trajectory of Alzheimer's disease (AD). However, limited availability of neuroimaging technology and neuropsychological tests appropriate for sub-Saharan African (SSA) countries makes it difficult to establish neuroanatomical associations of hippocampus and memory in this locale. OBJECTIVE: This study examined hippocampal volumes and memory in healthy control (HC) and probable AD groups in the Democratic Republic of Congo (DRC)...
September 28, 2023: Journal of Alzheimer's Disease: JAD
Kanika Mehta, Mohammadreza Mohebbi, Julie A Pasco, Lana J Williams, Ken Walder, Boon Lung Ng, Veer Bala Gupta
BACKGROUND: Poor cognitive function, a major disabling condition of older age, is often considered a prodromal feature of dementia. High mortality and the lack of a cure for dementia have necessitated a focus on the identification of potentially modifiable risk factors. Mental and physical health conditions such as mood disorders and bone loss have been previously linked with poor cognition individually although their combined effect remains largely unknown. OBJECTIVE: Considering the multifactorial nature of dementia pathology, we investigated whether mood disorders, bone health and their interaction are associated with cognitive function in a population-based sample of men...
September 25, 2023: Journal of Alzheimer's Disease: JAD
Kameron Kaplan, Holly Christian Hunsberger
Benzodiazepines (BZDs) are anxiolytic drugs that act on GABAa receptors and are used to treat anxiety disorders. However, these drugs come with the detrimental side effect of anterograde amnesia, or the inability to form new memories. In this review we discuss, behavioral paradigms, sex differences and hormonal influences affecting BZD-induced amnesia, molecular manipulations, including the knockout of GABAa receptor subunits, and regional studies utilizing lesion and microinjection techniques targeted to the hippocampus and amygdala...
2023: Frontiers in Pharmacology
Nusrat Zahan Bhuiyan, Md Kamrul Hasan, Zimam Mahmud, Md Sabbir Hossain, Atiqur Rahman
INTRODUCTION: This exploratory review article describes about the genetic factors behind Alzheimer's disease (AD), their association with foods, and their relationships with cognitive impairment. It explores the dietary patterns and economic challenges in AD prevention. METHODS: Scopus, PubMed and Google Scholar were searched for articles that examined the relationships between Diets, Alzheimer's Disease (AD), and Socioeconomic conditions in preventative Alzheimer's disease studies...
December 2023: Metabolism open
Chloe Lopez-Lee, Lay Kodama, Li Fan, Man Ying Wong, Nessa R Foxe, Laraib Jiaz, Fangmin Yu, Pearly Ye, Jingjie Zhu, Kendra Norman, Eileen Ruth Torres, Rachel D Kim, Gergey Alzaem Mousa, Dena Dubal, Shane Liddelow, Wenjie Luo, Li Gan
UNLABELLED: Demyelination occurs in aging and associated diseases, including Alzheimer's disease. Several of these diseases exhibit sex differences in prevalence and severity. Biological sex primarily stems from sex chromosomes and gonads releasing sex hormones. To dissect mechanisms underlying sex differences in demyelination of aging brains, we constructed a transcriptomic atlas of cell type-specific responses to illustrate how sex chromosomes, gonads, and their interaction shape responses to demyelination...
September 21, 2023: bioRxiv
Amira Latif-Hernandez, Tao Yang, Robert Raymond-Butler, Patricia Moran Losada, Paras Minhas, Halle White, Kevin C Tran, Harry Liu, Danielle A Simmons, Vanessa Langness, Katrin Andreasson, Tony Wyss-Coray, Frank M Longo
INTRODUCTION: TrkB and TrkC receptor signaling promotes synaptic plasticity and interacts with pathways affected by amyloid-β (Aβ)-toxicity. Upregulating TrkB/C signaling could reduce Alzheimer's disease (AD)-related degenerative signaling, memory loss, and synaptic dysfunction. METHODS: PTX-BD10-2 (BD10-2), a small molecule TrkB/C receptor partial agonist, was orally administered to aged London/Swedish-APP mutant mice (APP L/S ) and wild-type controls (WT)...
September 18, 2023: bioRxiv
Gong Peng, Ming Li, Zhaoli Meng
Alzheimer's disease (AD) is one of the leading causes of death and disability. AD is a devastating disease that has caused an overwhelming burden. However, no disease-modified treatment was discovered. The approval of sodium oligomannate (GV-971) in mild-moderate AD patients has attracted great attention to investigate the role of saccharides in AD. Therefore, summarizing and explaining the role of saccharides in AD is urgent and promising. Recent studies showed that polysaccharides (PSs) potentially benefit AD in vitro and in vivo ...
2023: Frontiers in Nutrition
Mohammad Hadi Modarres, Chris Kalafatis, Panos Apostolou, Naji Tabet, Seyed-Mahdi Khaligh-Razavi
BACKGROUND: Current primary care cognitive assessment tools are either crude or time-consuming instruments that can only detect cognitive impairment when it is well established. This leads to unnecessary or late referrals to memory services, by which time the disease may have already progressed into more severe stages. Due to the COVID-19 pandemic, some memory services have adapted to the new environment by shifting to remote assessments of patients to meet service user demand. However, the use of remote cognitive assessments has been inconsistent, and there has been little evaluation of the outcome of such a change in clinical practice...
2023: Frontiers in Aging Neuroscience
Ana María González-Martín, Agustín Aibar Almazán, Yulieth Rivas Campo, Noelia Rodríguez Sobrino, Yolanda Castellote Caballero
OBJECTIVES: This systematic review and meta-analysis was conducted to provide an analysis of the published data about the effects of cognitive behavioral therapies on the depression of older adults with a diagnosis of Alzheimer's disease. METHODS: This study was performed following the PRISMA 2020 guidelines. The search was performed between March and April 2023, using four electronic databases: PubMed, Web of Science, Cinhal and Scopus. Different keywords combined with Boolean operators were utilized...
2023: Frontiers in Aging Neuroscience
Honglu Yu, Min Xiong, Zhentao Zhang
Neurodegenerative diseases (NDDs) pose an increasingly prevalent threat to the well-being and survival of elderly individuals worldwide. NDDs include Alzheimer's disease (AD), Parkinson's disease (PD), Huntington's disease (HD), amyotrophic lateral sclerosis (ALS), and so on. They are characterized by progressive loss or dysfunction of neurons in the central or peripheral nervous system and share several cellular and molecular mechanisms, including protein aggregation, mitochondrial dysfunction, gene mutations, and chronic neuroinflammation...
2023: Frontiers in Molecular Neuroscience
Tadahiro Numakawa, Ryutaro Kajihara
Neurotrophins including brain-derived neurotrophic factor, BDNF, have critical roles in neuronal differentiation, cell survival, and synaptic function in the peripheral and central nervous system. It is well known that a variety of intracellular signaling stimulated by TrkB, a high-affinity receptor for BDNF, is involved in the physiological and pathological neuronal aspects via affecting cell viability, synaptic function, neurogenesis, and cognitive function. As expected, an alteration of the BDNF/TrkB system is suspected to be one of the molecular mechanisms underlying cognitive decline in cognitive diseases and mental disorders...
2023: Frontiers in Molecular Neuroscience
Laurent Reyes, Clara J Scher, Emily A Greenfield
BACKGROUND AND OBJECTIVES: Given the increase in methodological pluralism in research on brain health, cognitive aging, and neurodegenerative diseases, this scoping review aims to provide a descriptive overview and qualitative content analysis of studies stating the use of participatory research approaches within Alzheimer's disease and related dementias (ADRD) literature globally. RESEARCH DESIGN AND METHODS: We conducted a systematic search across four multidisciplinary databases (CINAHL, SCOPUS, PsycInfo, PubMed) for peer-reviewed, English-language studies addressing ADRD that explicitly described their use of a participatory research approach...
2023: Innovation in Aging
Despoina P Kiouri, Evi Tsoupra, Massimiliano Peana, Spyros P Perlepes, Maria E Stefanidou, Christos T Chasapis
Zinc is a multipurpose trace element for the human body, as it plays a crucial part in various physiological processes, such as cell growth and development, metabolism, cognitive, reproductive, and immune system function. Its significance in human health is widely acknowledged, and this has led the scientific community towards more research that aims to uncover all of its beneficial properties, especially when compared to other essential metal ions. One notable area where zinc has shown beneficial effects is in the prevention and treatment of various diseases, including cancer...
2023: EXCLI Journal
Derek B Archer, Kurt Schilling, Niranjana Shashikumar, Varuna Jasodanand, Elizabeth E Moore, Kimberly R Pechman, Murat Bilgel, Lori L Beason-Held, Yang An, Andrea Shafer, Luigi Ferrucci, Shannon L Risacher, Katherine A Gifford, Bennett A Landman, Angela L Jefferson, Andrew J Saykin, Susan M Resnick, Timothy J Hohman
INTRODUCTION: It is unclear how rates of white matter microstructural decline differ between normal aging and abnormal aging. METHODS: Diffusion MRI data from several well-established longitudinal cohorts of aging (Alzheimer's Disease Neuroimaging Initiative [ADNI], Baltimore Longitudinal Study of Aging [BLSA], Vanderbilt Memory & Aging Project [VMAP]) were free-water corrected and harmonized. This dataset included 1723 participants (age at baseline: 72.8 ± 8...
2023: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
William G Mantyh, J Nicholas Cochran, Jared W Taylor, Iris J Broce, Ethan G Geier, Luke W Bonham, Ashlyn G Anderson, Daniel W Sirkis, Renaud La Joie, Leonardo Iaccarino, Kiran Chaudhary, Lauren Edwards, Amelia Strom, Harli Grant, Isabel E Allen, Zachary A Miller, Marilu L Gorno-Tempini, Joel H Kramer, Bruce L Miller, Rahul S Desikan, Gil D Rabinovici, Jennifer S Yokoyama
Early-onset Alzheimer's disease (AD) is highly heritable, yet only 10% of cases are associated with known pathogenic mutations. For early-onset AD patients without an identified autosomal dominant cause, we hypothesized that their early-onset disease reflects further enrichment of the common risk-conferring single nucleotide polymorphisms associated with late-onset AD. We applied a previously validated polygenic hazard score for late-onset AD to 193 consecutive patients diagnosed at our tertiary dementia referral center with symptomatic early-onset AD...
2023: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
Bente Johnsen, Ieva Martinaityte, Tom Wilsgaard, Henrik Schirmer
INTRODUCTION: In Norway, the prevalence of dementia is higher than in demographically comparable, high income countries, but reliable incidence studies are lacking. This study calculated the incidence of age-specific dementia from 2000 to 2019. METHODS: Participants from The Tromsø Study ( n  = 44,214) were included. Participants with a dementia diagnosis ( n  = 2049 cases) were identified. Poisson regression was used to calculate age-specific yearly and 5-year incidence rates from 2000 to 2019...
2023: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
Yves Moné, Joshua P Earl, Jarosław E Król, Azad Ahmed, Bhaswati Sen, Garth D Ehrlich, Jeffrey R Lapides
BACKGROUND: Over the last few decades, a growing body of evidence has suggested a role for various infectious agents in Alzheimer's disease (AD) pathogenesis. Despite diverse pathogens (virus, bacteria, fungi) being detected in AD subjects' brains, research has focused on individual pathogens and only a few studies investigated the hypothesis of a bacterial brain microbiome. We profiled the bacterial communities present in non-demented controls and AD subjects' brains. RESULTS: We obtained postmortem samples from the brains of 32 individual subjects, comprising 16 AD and 16 control age-matched subjects with a total of 130 samples from the frontal and temporal lobes and the entorhinal cortex...
2023: Frontiers in Cellular and Infection Microbiology
Yopi Simargi, Resley O Mulia, Apriliani P Dewi, Sugiarto K Lay, Anita F Puspasari, Ronny, Fenny Susilo
Lung nodule is considered a common incidental finding in chest CT evaluation. Most cases are benign and derived from a previous infection. However, here we present a case where a patient presenting to the hospital with posterior chest wall trauma had a solitary pulmonary nodule that is consistent with non-small cell lung cancer (NSCLC). We would like to emphasize the importance of evaluation of incidental findings in chest CT evaluation, in this case, trauma cases by presenting this case. An 81-year-old male was referred to the emergency department with altered consciousness and a history of posterior chest trauma...
December 2023: Radiology Case Reports
Jing Luo, Qingyang Lu, Bin Sun, Nan Shao, Wei Huang, Guanhua Hu, Biao Cai, Wenwen Si
Alzheimer's disease (AD) is a common age-related chronic and neurodegenerative disease that has become a global health problem. AD pathogenesis is complex, and the clinical efficacy of commonly used anti-AD drugs is suboptimal. Recent research has revealed a close association between AD-induced damage and the activation of ferroptosis signaling pathways. Chrysophanol (CHR) the principal medicinal component of Rhubarb , has been reported to have anti-AD effects and can reduce ROS levels in AD-damaged models...
November 2023: 3 Biotech
Fetch more papers »
Fetching more papers... Fetching...
Remove bar
Read by QxMD icon Read

Save your favorite articles in one place with a free QxMD account.


Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"

We want to hear from doctors like you!

Take a second to answer a survey question.