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Alzheimers and cholesterol

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https://www.readbyqxmd.com/read/29455218/apoe-gene-polymorphism-among-jordanian-alzheimer-s-patients-with-relation-to-lipid-profile
#1
Yanal A Shafagoj, Randa G Naffa, Mohammed S El-Khateeb, Yazeed L Abdulla, Aseem A Al-Qaddoumi, Faisal A Khatib, Yousef F Al-Motassem, Eman M Al-Khateeb
OBJECTIVE: To investigate the frequencies of the apolipoprotein E (APOE) alleles and genotypes and study their relationship with the lipid profile in Jordanian patients with late-onset Alzheimer`s disease (AD). METHODS: This case-control study was carried out on 71 Jordanian individuals: 38 patients with late-onset AD (age >/=65 years) and 33 age-matched healthy controls. All participants were recruited from senior homes and Jordan University Hospital, Amman, Jordan between January 2010 and December 2013...
January 2018: Neurosciences: the Official Journal of the Pan Arab Union of Neurological Sciences
https://www.readbyqxmd.com/read/29454102/inflammation-as-a-possible-link-between-dyslipidemia-and-alzheimer-s-disease
#2
REVIEW
Bruno Cabral de Lima Oliveira, Paula Maria Quaglio Bellozi, Helton José Reis, Antônio Carlos Pinheiro de Oliveira
Alzheimer's disease (AD) is the leading cause of dementia worldwide. This pathological condition is characterized not only by Aβ and tau accumulation in the central nervous system (CNS), but also by inflammation, processes that can lead to neurodegeneration. Besides that, other factors may contribute to the development of AD, such as dyslipidemias. Changes in lipid levels can either influence the activity of enzymes related to the protein deposition that occurs in this pathological condition, or enhance the peripheral and CNS immune responses...
February 14, 2018: Neuroscience
https://www.readbyqxmd.com/read/29445325/biomarkers-of-amyotrophic-lateral-sclerosis-current-status-and-interest-of-oxysterols-and-phytosterols
#3
REVIEW
Anne Vejux, Amira Namsi, Thomas Nury, Thibault Moreau, Gérard Lizard
Amyotrophic lateral sclerosis (ALS) is a non-demyelinating neurodegenerative disease in adults with motor disorders. Two forms exist: a sporadic form (90% of cases) and a family form due to mutations in more than 20 genes including the Superoxide dismutase 1, TAR DNA Binding Protein, Fused in Sarcoma, chromosome 9 open reading frame 72 and VAPB genes. The mechanisms associated with this pathology are beginning to be known: oxidative stress, glutamate excitotoxicity, protein aggregation, reticulum endoplasmic stress, neuroinflammation, alteration of RNA metabolism...
2018: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29434767/simvastatin-inhibits-the-apoptosis-of-hippocampal-cells-in-a-mouse-model-of-alzheimer-s-disease
#4
Xiaoqin Hu, Chengwei Song, Ming Fang, Chengyan Li
Alzheimer's disease is associated with cognitive impairments that affect memory and executive functions. Simvastatin is a cholesterol-lowering statin drug that is used to control levels of cholesterol in the blood, particularly in cases of hypercholesterolemia, and may be used in the treatment of aneurysmal subarachnoid hemorrhage. Previous results have indicated that the apoptosis of hippocampal cells may serve a critical role in the progression of Alzheimer's disease. In the present study, it was determined whether Simvastatin inhibited the apoptosis of hippocampal cells in vitro and in vivo ...
February 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29416324/a-cross-sectional-study-of-inpatients-with-late-stage-of-dementia-in-southeast-china-and-the-associations-between-biochemical-parameters-and-apolipoprotein-e-genotypes
#5
Bin Jiang, Xue-Ping Zhang, Mei-Fang Chen, Zheng Wang, Ming-Xue Zhao, Bin-Hua Chen, Hong-Lei Li
Background: The purpose of this study was to analyze the disease distribution of patients in the late stage of dementia through a cross-sectional investigation and to clarify the association between apolipoprotein E (APOE) genotypes and the serum levels of total cholesterol, total triglycerides, and blood glucose in the late-stage Alzheimer's disease (AD) patients. Methods: Patients who were in the late stage of dementia in a mental health center were enrolled in this study...
2018: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/29411449/caide-dementia-risk-score-alzheimer-and-cerebrovascular-pathology-a-population-based-autopsy-study
#6
Babak Hooshmand, Tuomo Polvikoski, Miia Kivipelto, Maarit Tanskanen, Liisa Myllykangas, Mira Mäkelä, Minna Oinas, Anders Paetau, Alina Solomon
BACKGROUND: CAIDE Dementia Risk Score is a tool for estimating dementia risk in the general population. Its longitudinal associations with Alzheimer or vascular neuropathology in the oldest old are not known. AIM: To explore the relationship between CAIDE Dementia Risk Score at baseline and neuritic plaques, neurofibrillary tangles, cerebral infarcts, and cerebral amyloid angiopathy (CAA) after up to 10 years follow-up in the Vantaa 85+ population. METHODS: Study population included 149 participants aged ≥85 years, without dementia at baseline, and with available clinical and autopsy data...
January 25, 2018: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29409811/serum-albumin-s-protective-inhibition-of-amyloid-%C3%AE-fibre-formation-is-suppressed-by-cholesterol-fatty-acids-and-warfarin
#7
David C Bode, Helen F Stanyon, Trisha Hirani, Mark D Baker, Jon Nield, John H Viles
Central to Alzheimer's disease (AD) pathology is the assembly of monomeric amyloid-β peptide (Aβ) into oligomers and fibres. The most abundant protein in the blood plasma and cerebrospinal fluid (CSF) is human serum albumin (HSA). Albumin can bind to Aβ and is capable of inhibiting the fibrillisation of Aβ at physiological (μM) concentrations. The ability of albumin to bind Aβ has recently been exploited in a phase-II clinical trial, which showed a reduction in cognitive decline in Alzheimer's disease patients undergoing albumin plasma-exchange...
February 1, 2018: Journal of Molecular Biology
https://www.readbyqxmd.com/read/29401741/abca7-and-pathogenic-pathways-of-alzheimer-s-disease
#8
REVIEW
Tomonori Aikawa, Marie-Louise Holm, Takahisa Kanekiyo
The ATP-binding cassette (ABC) reporter family functions to regulate the homeostasis of phospholipids and cholesterol in the central nervous system, as well as peripheral tissues. ABCA7 belongs to the A subfamily of ABC transporters, which shares 54% sequence identity with ABCA1. While ABCA7 is expressed in a variety of tissues/organs, including the brain, recent genome-wide association studies (GWAS) have identified ABCA7 gene variants as susceptibility loci for late-onset Alzheimer's disease (AD). More important, subsequent genome sequencing analyses have revealed that premature termination codon mutations in ABCA7 are associated with the increased risk for AD...
February 5, 2018: Brain Sciences
https://www.readbyqxmd.com/read/29390252/correlation-study-of-framingham-risk-score-and-vascular-dementia-an-observational-study
#9
Shan-Shan Li, Jie Zheng, Bin Mei, Han-Yao Wang, Miao Zheng, Kai Zheng
Vascular dementia (VaD) is one of the most common forms of dementia, and second only to Alzheimer's disease. The purpose of this study was to evaluate the potential diagnostic value of Framingham risk score (FRS) in VaD by investigating the relationship among cardiovascular risks, FRS, and VaD.Data were collected from patients (n = 130) at Tongji Hospital in Wuhan, China. They were divided into 2 groups, including the control group (n = 70) and the VaD group (n = 60). Statistical methods including t-test, logistic regression model, multiple linear regression model, and receiver-operating characteristic (ROC) curve were adopted for the assessment...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29367433/n-glycome-of-the-lysosomal-glycocalyx-is-altered-in-niemann-pick-type-c-disease-model-cells
#10
Marko Kosicek, Ivan Gudelj, Anita Horvatic, Tanja Jovic, Frano Vuckovic, Gordan Lauc, Silva Hecimovic
Increasing evidence implicates lysosomal dysfunction in the pathogenesis of neurodegenerative diseases, including the rare inherited lysosomal storage disorders (LSDs) and the most common neurodegenerative diseases, such as Alzheimer's and Parkinson's disease (AD and PD). While the triggers of the lysosomal impairment may involve the accumulated macromolecules or dysfunction of the lysosomal enzymes, the role of the lysosomal glycocalyx in the lysosomal (dys)function has not been studied. The goal of this work was to analyze whether there are changes in the lysosomal glycocalyx in a cellular model of a LSD Niemann-Pick type C disease (NPC)...
January 24, 2018: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/29351484/the-serum-metabolomics-signature-of-type-2-diabetes-is-obscured-in-alzheimer-s-disease
#11
Jill K Morris, Brian D Piccolo, Kartik Shankar, John P Thyfault, Sean H Adams
There is evidence for systemic metabolic impairment in Alzheimer's disease (AD), and Type 2 Diabetes (T2D) increases AD risk. Although studies analyzing blood metabolomics signatures have shown differences between cognitively healthy (CH) and AD subjects, these signatures have not been compared to individuals with T2D. We utilized untargeted analysis platforms (primary metabolism and complex lipids) to characterize the serum metabolome of 126 overnight fasted elderly subjects classified into 4 groups based upon AD status (CH or AD) and T2D status (Nondiabetic [ND] or T2D)...
December 26, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29341888/protection-against-the-neurotoxic-effects-of-%C3%AE-amyloid-peptide-on-cultured-neuronal-cells-by-lovastatin-involves-elevated-expression-of-%C3%AE-7-nicotinic-acetylcholine-receptors-and-activating-phosphorylation-of-protein-kinases
#12
Liang Zhao, Yan Xiao, Jin Xiu, Long-Chun Tan, Zhi-Zhong Guan
The treatment of neurodegenerative diseases with statins has drawn increasing attention, but the related molecular mechanisms remain elusive. To examine the pleiotropic cholesterol-independent effects of statins in connection with the treatment of Alzheimer disease, we probed the influence of lovastatin on the metabolism of amyloid precursor protein (APP) , expression of nicotinic acetylcholine receptors (nAChRs), and activity of mitogen-activated protein kinase in primary cultured neurons and SH-SY5Y cells over-expressing human APP670/671...
January 13, 2018: American Journal of Pathology
https://www.readbyqxmd.com/read/29335400/causal-associations-between-risk-factors-and-common-diseases-inferred-from-gwas-summary-data
#13
Zhihong Zhu, Zhili Zheng, Futao Zhang, Yang Wu, Maciej Trzaskowski, Robert Maier, Matthew R Robinson, John J McGrath, Peter M Visscher, Naomi R Wray, Jian Yang
Health risk factors such as body mass index (BMI) and serum cholesterol are associated with many common diseases. It often remains unclear whether the risk factors are cause or consequence of disease, or whether the associations are the result of confounding. We develop and apply a method (called GSMR) that performs a multi-SNP Mendelian randomization analysis using summary-level data from genome-wide association studies to test the causal associations of BMI, waist-to-hip ratio, serum cholesterols, blood pressures, height, and years of schooling (EduYears) with common diseases (sample sizes of up to 405,072)...
January 15, 2018: Nature Communications
https://www.readbyqxmd.com/read/29332048/frequency-of-cardiovascular-genetic-risk-factors-in-a-calabrian-population-and-their-effects-on-dementia
#14
Raffaele Maletta, Nicoletta Smirne, Livia Bernardi, Maria Anfossi, Maura Gallo, Maria Elena Conidi, Rosanna Colao, Gianfranco Puccio, Sabrina A M Curcio, Valentina Laganà, Francesca Frangipane, Chiara Cupidi, Maria Mirabelli, Franca Vasso, Giusi Torchia, Maria G Muraca, Raffaele Di Lorenzo, Giuseppina Rose, Alberto Montesanto, Giuseppe Passarino, Amalia C Bruni
BACKGROUND: Several genetic variants playing a key role in cholesterol levels, blood pressure, and vascular dysfunction influence the risk of Alzheimer's disease (AD) and vascular dementia (VaD). The many meta-analysis studies carried out on large numbers of samples in different populations have not provided clear results to date, because a trans-ethnic shift of risk genotypes in different populations is often observed. OBJECTIVES: To determine genotypes allele frequencies of the polymorphisms most frequently identified to be correlated with cardio-cerebrovascular disease and AD in a Southern Italy population and to investigate their possible association with dementia...
2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29330881/cocaine-and-hiv-1-tat-disrupt-cholesterol-homeostasis-in-astrocytes-implications-for-hiv-associated-neurocognitive-disorders-in-cocaine-user-patients
#15
Bianca Cotto, Kalimuthusamy Natarajaseenivasan, Kimberly Ferrero, Leroy Wesley, Matthew Sayre, Dianne Langford
Cholesterol synthesis and clearance by astrocytes are tightly regulated to maintain constant levels within the brain. In this context, liver X receptors (LXRs) are the master regulators of cholesterol homeostasis in the central nervous system (CNS). Increasing levels of cholesterol in astrocytes trigger LXR activation leading to the transcription of target genes involved in cholesterol trafficking and efflux, including apolipoprotein E, cytochrome P450 enzymes, sterol regulatory binding protein, and several ATP-binding cassette transporter proteins...
January 13, 2018: Glia
https://www.readbyqxmd.com/read/29325505/the-relationship-between-cholesterol-level-and-alzheimer-s-disease-associated-app-proteolysis-a%C3%AE-metabolism
#16
Chaoqun Wang, Yikai Shou, Jie Pan, Yue Du, Cuiqing Liu, Huanhuan Wang
Globally, Alzheimer's disease (AD) is the most prevalent neurodegenerative disease in the elderly population, the hallmark of which is amyloid β (Aβ) peptide. Energy metabolism and AD pathogenesis are believed to influence one another. Different cholesterol levels are thought to influence various steps in neurotoxic Aβ generation, including amyloid precursor protein (APP) proteolysis and the corresponding activities of α-, β-, and γ-secretases. In addition, cholesterol has been proved to mediate Aβ metabolism, such as its fibrillation, transportation, degradation, and clearance processes...
January 11, 2018: Nutritional Neuroscience
https://www.readbyqxmd.com/read/29316447/circulating-metabolites-and-general-cognitive-ability-and-dementia-evidence-from-11-cohort-studies
#17
Sven J van der Lee, Charlotte E Teunissen, René Pool, Martin J Shipley, Alexander Teumer, Vincent Chouraki, Debora Melo van Lent, Juho Tynkkynen, Krista Fischer, Jussi Hernesniemi, Andres Metspalu, Archana Singh-Manoux, Aswin Verhoeven, Gonneke Willemsen, Francien A de Leeuw, Holger Wagner, Jenny van Dongen, Johannes Hertel, Kathrin Budde, Ko Willems van Dijk, Leonie Weinhold, M Arfan Ikram, Maik Pietzner, Markus Perola, Michael Wagner, Nele Friedrich, P E Slagboom, Philip Scheltens, Qiong Yang, Robert E Gertzen, Sarah Egert, Shuo Li, Thomas Hankemeier, Catharine E M van Beijsterveldt, Vasan Ramachandran, Wolfgang Maier, Carel F W Peeters, Hans Jörgen Grabe, Alfredo Ramirez, Sudha Seshadri, Toomas Haller, Mika Kivimäki, Veikko Salomaa, Ayşe Demirkan, Dorret Boomsma, Wiesje M van der Flier, Najaf Amin, Cornelia M van Duijn
INTRODUCTION: Identifying circulating metabolites that are associated with cognition and dementia may improve our understanding of the pathogenesis of dementia and provide crucial readouts for preventive and therapeutic interventions. METHODS: We studied 299 metabolites in relation to cognition (general cognitive ability) in two discovery cohorts (N total = 5658). Metabolites significantly associated with cognition after adjusting for multiple testing were replicated in four independent cohorts (N total = 6652), and the associations with dementia and Alzheimer's disease (N = 25,872) and lifestyle factors (N = 5168) were examined...
January 6, 2018: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/29315754/tspo-regulation-in-reactive-gliotic-diseases
#18
REVIEW
Adam M McNeela, Charles Bernick, Rochelle M Hines, Dustin J Hines
The brain is the most metabolically active organ in the body. This high metabolic demand is apparent in that 60% of the brain is comprised of mitochondria-enriched cells. A disruption of the brain's ability to meet this immense metabolic demand is central to the pathogenesis of a multitude of neurological disorders, which range from depression to Alzheimer's disease. Central to these pathologies are glial signaling and energy metabolism cascades regulating apoptosis and inflammation. Thus, diseases causing inflammation and disruption of metabolism can be correlated with glial reactivity...
January 6, 2018: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/29307281/intermittent-fasting-protects-against-the-deterioration-of-cognitive-function-energy-metabolism-and-dyslipidemia-in-alzheimer-s-disease-induced-estrogen-deficient-rats
#19
Bae Kun Shin, Suna Kang, Da Sol Kim, Sunmin Park
Intermittent fasting may be an effective intervention to protect against age-related metabolic disturbances, although it is still controversial. Here, we investigated the effect of intermittent fasting on the deterioration of the metabolism and cognitive functions in rats with estrogen deficiency and its mechanism was also explored. Ovariectomized rats were infused with β-amyloid (25-35; Alzheimer's disease) or β-amyloid (35-25, Non-Alzheimer's disease; normal cognitive function) into the hippocampus. Each group was randomly divided into two sub-groups: one with intermittent fasting and the other fed ad libitum: Alzheimer's disease-ad libitum, Alzheimer's disease-intermittent fasting, Non-Alzheimer's disease-ad libitum, and Non-Alzheimer's disease-intermittent fasting...
January 1, 2018: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29301387/pharmacogenetics-of-vascular-risk-factors-in-alzheimer-s-disease
#20
REVIEW
Ramón Cacabelos, Arun Meyyazhagan, Juan C Carril, Pablo Cacabelos, Óscar Teijido
Alzheimer's disease (AD) is a polygenic/complex disorder in which genomic, epigenomic, cerebrovascular, metabolic, and environmental factors converge to define a progressive neurodegenerative phenotype. Pharmacogenetics is a major determinant of therapeutic outcome in AD. Different categories of genes are potentially involved in the pharmacogenetic network responsible for drug efficacy and safety, including pathogenic, mechanistic, metabolic, transporter, and pleiotropic genes. However, most drugs exert pleiotropic effects that are promiscuously regulated for different gene products...
January 3, 2018: Journal of Personalized Medicine
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