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APO E GENE

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https://www.readbyqxmd.com/read/28937055/association-between-apolipoprotein-e-polymorphism-and-nephropathy-in-iranian-diabetic-patients
#1
Mostafa Karimoei, Parvin Pasalar, Mohsen Mehrabzadeh, Maryam Daneshpour, Maryam Shojaee, Katayoun Forouzanfar, Farideh Razi
Approximately one-third of diabetic patients develop evidence of nephropathy. Pathogenesis of diabetic nephropathy (DN) remains unclear; however, some genetic and metabolic risk factors have been determined for the development and progression of DN. In the recent genetic studies, polymorphism of apolipoprotein E (ApoE) gene has been reported as a risk factor for the development of DN; however, the results are inconsistent. The aim of the present study was to evaluate the association between ApoE polymorphism and nephropathy in Iranian patient with type 2 diabetes...
September 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28935842/the-paralogs-to-the-c-terminal-domain-of-the-cyanobacterial-ocp-are-carotenoid-donors-to-hcps
#2
Fernando Muzzopappa, Adjélé Wilson, Vinosa Yogarajah, Sandrine Cot, François Perreau, Cédric Montigny, Céline Bourcier de Carbon, Diana Kirilovsky
The photoactive Orange Carotenoid Protein photoprotects cyanobacteria cells by quenching singlet oxygen and excess excitation energy. Its N-terminal domain (NTD) is the active part of the protein and the C-terminal domain (CTD) regulates the activity. Recently, the characteristics of a family of soluble carotenoid-binding proteins (Helical Carotenoid Proteins or HCPs), paralogs of NTD-OCP, were described. Bioinformatics studies also revealed the existence of genes coding for homologs of CTD. Here, we show that the latter genes encode carotenoid proteins (CTDHs)...
September 21, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28935757/resveratrol-inhibits-growth-of-experimental-abdominal-aortic-aneurysm-associated-with-upregulation-of-angiotensin-converting-enzyme-2
#3
Corey S Moran, Erik Biros, Smriti M Krishna, Yutang Wang, Chris Tikellis, Joseph V Moxon, Mark E Cooper, Paul E Norman, Louise M Burrell, Merlin C Thomas, Jonathan Golledge
OBJECTIVE: Recent evidence suggests an important role for angiotensin-converting enzyme 2 (ACE2) in limiting abdominal aortic aneurysm (AAA). This study examined the effect of ACE2 deficiency on AAA development and the efficacy of resveratrol to upregulate ACE2 in experimental AAA. APPROACH AND RESULTS: Ace2 deletion in apolipoprotein-deficient mice (ApoE(-/)(-)Ace2(-/y) ) resulted in increased aortic diameter and spontaneous aneurysm of the suprarenal aorta associated with increased expression of inflammation and proteolytic enzyme markers...
September 21, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28934977/er%C3%AE-and-apoe-isoforms-interact-to-regulate-bdnf-5-ht2a-signaling-and-synaptic-function-in-the-female-brain
#4
Anindit Chhibber, Liqin Zhao
BACKGROUND: Depression has been reported to be commonly manifested in patients with Alzheimer's disease (AD) and is considered a risk factor for AD. The human apolipoprotein E (ApoE) gene exists in three major isoforms (coded by ε2, ε3, and ε4), and the ε4 allele has been associated with a greater incidence of both depression and AD. Although mounting evidence points to the potentially complex interaction between these two brain disorders in which ApoE might play a role, the underlying mechanisms are largely unknown...
September 21, 2017: Alzheimer's Research & Therapy
https://www.readbyqxmd.com/read/28928671/aerobic-exercise-training-selectively-changes-oxysterol-levels-and-metabolism-reducing-cholesterol-accumulation-in-the-aorta-of-dyslipidemic-mice
#5
Guilherme Silva Ferreira, Paula R Pinto, Rodrigo T Iborra, Vanessa Del Bianco, Monique Fátima Mello Santana, Edna Regina Nakandakare, Valéria S Nunes, Carlos E Negrão, Sergio Catanozi, Marisa Passarelli
Background: Oxysterols are bioactive lipids that control cellular cholesterol synthesis, uptake, and exportation besides mediating inflammation and cytotoxicity that modulate the development of atherosclerosis. Aerobic exercise training (AET) prevents and regresses atherosclerosis by the improvement of lipid metabolism, reverse cholesterol transport (RCT) and antioxidant defenses in the arterial wall. We investigated in dyslipidemic mice the role of a 6-week AET program in the content of plasma and aortic arch cholesterol and oxysterols, the expression of genes related to cholesterol flux and the effect of the exercise-mimetic AICAR, an AMPK activator, in macrophage oxysterols concentration...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28912560/the-srgap2-snps-their-haplotypes-and-g%C3%A2-%C3%A3-%C3%A2-e-interactions-on-serum-lipid-traits
#6
Liu Miao, Rui-Xing Yin, Jin-Zhen Wu, Shuo Yang, Wei-Xiong Lin, Shang-Ling Pan
Maonan nationality is a relatively conservative and isolated minority in China. Little is known about the association of the Slit-Robo Rho GTPase activating protein 2 gene (SRGAP2) single nucleotide polymorphisms (SNPs) and serum lipid levels in the Chinese populations. This study was performed to clarify the association of the SRGAP2 rs2483058 and rs2580520 SNPs and their haplotypes with serum lipid traits in the Maonan and Han populations. Genotyping of the 2 SNPs was performed in 2444 unrelated subjects (Han, 1210 and Maonan, 1234) by polymerase chain reaction and restriction fragment length polymorphism combined with gel electrophoresis, and then confirmed by direct sequencing...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28900374/association-between-polymorphisms-in-the-promoter-region-of-the-apolipoprotein-e-apoe-gene-and-alzheimer-s-disease-a-meta-analysis
#7
Hanyan Xiao, Yifeng Gao, Lei Liu, Yan Li
Several studies have evaluated the role of polymorphisms in the promoter region of APOE gene that encodes apolipoprotein E (APOE) and the susceptibility to Alzheimer's disease (AD). The aim of this literature review and meta-analysis was to investigate the relationship between the APOE promoter region single nucleotide polymorphisms (SNPs) (rs449647, -491A/T; rs769446, -427T/C and rs405509 -219T/G) and the risk of developing AD. Eligible controlled studies published up to November 2016 were retrieved from main online scientific and medical databases...
2017: EXCLI journal
https://www.readbyqxmd.com/read/28899419/increased-plasma-lipid-levels-exacerbate-muscle-pathology-in-the-mdx-mouse-model-of-duchenne-muscular-dystrophy
#8
Nadia Milad, Zoe White, Arash Y Tehrani, Stephanie Sellers, Fabio M V Rossi, Pascal Bernatchez
BACKGROUND: Duchenne muscular dystrophy (DMD) is caused by loss of dystrophin expression and leads to severe ambulatory and cardiac function decline. However, the dystrophin-deficient mdx murine model of DMD only develops a very mild form of the disease. Our group and others have shown vascular abnormalities in animal models of MD, a likely consequence of the fact that blood vessels express the same dystrophin-associated glycoprotein complex (DGC) proteins as skeletal muscles. METHODS: To test the blood vessel contribution to muscle damage in DMD, mdx (4cv) mice were given elevated lipid levels via apolipoprotein E (ApoE) gene knockout combined with normal chow or lipid-rich Western diets...
September 12, 2017: Skeletal Muscle
https://www.readbyqxmd.com/read/28899010/modelling-apoe-%C3%A9-3-4-allele-associated-sporadic-alzheimer-s-disease-in-an-induced-neuron
#9
Hongwon Kim, Junsang Yoo, Jaein Shin, Yujung Chang, Junghyun Jung, Dong-Gyu Jo, Janghwan Kim, Wonhee Jang, Christopher J Lengner, Byung-Soo Kim, Jongpil Kim
The recent generation of induced neurons by direct lineage conversion holds promise for in vitro modelling of sporadic Alzheimer's disease. Here, we report the generation of induced neuron-based model of sporadic Alzheimer's disease in mice and humans, and used this system to explore the pathogenic mechanisms resulting from the sporadic Alzheimer's disease risk factor apolipoprotein E (APOE) ɛ3/4 allele. We show that mouse and human induced neurons overexpressing mutant amyloid precursor protein in the background of APOE ɛ3/4 allele exhibit altered amyloid precursor protein (APP) processing, abnormally increased production of amyloid-β42 and hyperphosphorylation of tau...
August 1, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28888721/tmem106b-and-apoe-polymorphisms-in-chmp2b-mediated-frontotemporal-dementia-ftd-3
#10
Nina Rostgaard, Peter Roos, Esben Budtz-Jørgensen, Peter Johannsen, Gunhild Waldemar, Anne Nørremølle, Suzanne G Lindquist, Susanne Gydesen, Jeremy M Brown, John Collinge, Adrian M Isaacs, Troels T Nielsen, Jørgen E Nielsen
Single-nucleotide polymorphisms in the TMEM106B gene have been identified as a risk factor in frontotemporal dementia (FTD). The major allele of SNP rs3173615 is a risk factor in sporadic FTD, whereas the minor allele seems protective in GRN- and C9orf72-mediated FTD. The role of apolipoprotein E (ApoE) in FTD is uncertain, though an established risk factor in Alzheimer's disease. In a unique Danish family, inherited FTD is caused by a mutation in the CHMP2B gene located on chromosome 3 (FTD-3). In this family, both risk factors TMEM106B and ApoE were analyzed and correlated to age at onset (AAO) and progression in terms of age at institutionalization (AAI) and age at death (AAD)...
November 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28883857/postmenopausal-cognitive-changes-and-androgen-levels-in-the-context-of-apolipoprotein-e-polymorphism
#11
Iwona Bojar, Jarosław Pinkas, Mariusz Gujski, Alfred Owoc, Dorota Raczkiewicz, Kasia Gustaw-Rothenberg
INTRODUCTION: The focus of this study was to assess cognitive functions in relation to androgens and specifically testosterone and dehydroepiandrosterone in postmenopausal women as well as the correlation between cognitive functions and these two androgens according to polymorphism of the apolipoprotein E gene (APOE). MATERIAL AND METHODS: A group of 402 women was recruited to the study (minimum 2 years after the last menstruation, follicle-stimulating hormone (FSH) more than 30 U/ml and no dementia signs on Montreal Cognitive Assessment)...
August 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28864445/dissection-of-the-molecular-circuitry-controlling-virulence-in-francisella-tularensis
#12
Bonnie J Cuthbert, Wilma Ross, Amy E Rohlfing, Simon L Dove, Richard L Gourse, Richard G Brennan, Maria A Schumacher
Francisella tularensis, the etiological agent of tularemia, is one of the most infectious bacteria known. Because of its extreme pathogenicity, F. tularensis is classified as a category A bioweapon by the US government. F. tularensis virulence stems from genes encoded on the Francisella pathogenicity island (FPI). An unusual set of Francisella regulators-the heteromeric macrophage growth locus protein A (MglA)-stringent starvation protein A (SspA) complex and the DNA-binding protein pathogenicity island gene regulator (PigR)-activates FPI transcription and thus is essential for virulence...
September 1, 2017: Genes & Development
https://www.readbyqxmd.com/read/28861889/red-yeast-rice-prevents-atherosclerosis-through-regulating-inflammatory-signaling-pathways
#13
Min Wu, Wen-Gao Zhang, Long-Tao Liu
OBJECTIVE: To observe the effects of red yeast rice (RYR) on blood lipid levels, aortic atherosclerosis (AS), and plaque stability in apolipoprotein E gene knockout (ApoE-/-) mice. METHODS: Twenty-four ApoE-/- mice were fed with a high-fat diet starting from 6 weeks of age. Mice were randomized into three groups (n = 8 in each group): model group (ApoE-/- group), RYR group (ApoE-/- + RYR group), and simvastatin group (ApoE-/- + simvastatin group). Eight 6-week-old C57BL/6 mice were assigned as the control group and fed with a basic diet...
September 2017: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28855441/microrna-182-promotes-lipoprotein-lipase-expression-and-atherogenesisby-targeting-histone-deacetylase-9-in-apolipoprotein-e-knockout-mice
#14
Hai-Peng Cheng, Duo Gong, Zhen-Wang Zhao, Ping-Ping He, Xiao-Hua Yu, Qiong Ye, Chong Huang, Xin Zhang, Ling-Yan Chen, Wei Xie, Min Zhang, Liang Li, Xiao-Dan Xia, Xin-Ping Ouyang, Yu-Lin Tan, Zong-Bao Wang, Guo-Ping Tian, Xi-Long Zheng, Wei-Dong Yin, Chao-Ke Tang
BACKGROUND: Lipoprotein lipase (LPL) expressed in macrophages plays an important role in promoting the development of atherosclerosis or atherogenesis. MicroRNA-182 (miR-182) is involved in the regulation of lipid metabolism and inflammation. However, it remains unclear how miR-182 regulates LPL and atherogenesis.Methods and Results:Using bioinformatics analyses and a dual-luciferase reporter assay, we identified histone deacetylase 9 (HDAC9) as a target gene of miR-182. Moreover, miR-182 upregulated LPL expression by directly targetingHDAC9in THP-1 macrophages...
August 29, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28844148/the-association-of-apolipoprotein-e-gene-polymorphism-with-cognitive-performance-in-nondemented-polish-adults-aged-55-to-75
#15
Małgorzata T Piskunowicz, Katarzyna Linkowska, Szymon Gołota, Tomasz Grzybowski, Kornelia Kędziora-Kornatowska, Alina Borkowska
The ε4 allele of the apolipoprotein E (APOE) gene is known as a risk factor for dementia. How APOE ε polymorphism affects cognitive performance in nondemented aging subjects remains less clear. In this study, the relationship between APOE status and cognitive performance across various cognitive domains in adults aged 55 to 75 years ( n = 74) without dementia was investigated. E4 carriers ( n = 11) performed worse versus noncarriers on forward Digit Span and delayed recall of the Rey-Osterrieth complex figure...
January 1, 2017: International Journal of Aging & Human Development
https://www.readbyqxmd.com/read/28840058/p2x7-receptor-and-apoe-polymorphisms-and-survival-from-heart-failure-a-prospective-study-in-frail-patients-in-a-geriatric-unit
#16
Giuseppe Pasqualetti, Marta Seghieri, Eleonora Santini, Chiara Rossi, Edoardo Vitolo, Livia Giannini, Maria Giovanna Malatesta, Valeria Calsolaro, Fabio Monzani, Anna Solini
Heart failure (HF) is one of the most frequent cause of hospitalization in elderly and often coexists with concurrent geriatric syndromes, like cognitive disturbances; various pathophysiological mechanisms are shared by HF and cognitive decline, notably a substrate of low-grade inflammation. We investigated whether SNPs in the purinergic receptor (P2X7R) and apolipoprotein (APO) E genes, both involved in a series of inflammatory responses, are associated to HF or cognitive impairment and are able to predict post-discharge mortality in the elderly...
July 2017: Aging and Disease
https://www.readbyqxmd.com/read/28809398/precision-medicine-for-suicidality-from-universality-to-subtypes-and-personalization
#17
A B Niculescu, H Le-Niculescu, D F Levey, P L Phalen, H L Dainton, K Roseberry, E M Niculescu, J O Niezer, A Williams, D L Graham, T J Jones, V Venugopal, A Ballew, M Yard, T Gelbart, S M Kurian, A Shekhar, N J Schork, G E Sandusky, D R Salomon
Suicide remains a clear, present and increasing public health problem, despite being a potentially preventable tragedy. Its incidence is particularly high in people with overt or un(der)diagnosed psychiatric disorders. Objective and precise identification of individuals at risk, ways of monitoring response to treatments and novel preventive therapeutics need to be discovered, employed and widely deployed. We sought to investigate whether blood gene expression biomarkers for suicide (that is, a 'liquid biopsy' approach) can be identified that are more universal in nature, working across psychiatric diagnoses and genders, using larger cohorts than in previous studies...
September 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28808185/establishment-of-a-rat-model-with-diet-induced-coronary-atherosclerosis
#18
Mingming Gao, Guo Xin, Xu Qiu, Yuhui Wang, George Liu
Coronary atherosclerotic disease is a serious disease in humans, but no suitable animal model is available currently for further studies. We used apolipoprotein E gene knockout (ApoE KO) rats to induce hypercholesterolemia through a special high cholesterol/bile salt diet (Paigen diet), then analyzed aortic and coronary atherosclerosis lesions and the myocardial injury in order to establish a novel small animal model of coronary atherosclerosis. Plasma cholesterol of ApoE KO rats increased 7.6-fold compared with wild-type rats after 8 weeks on the Paigen diet...
October 17, 2016: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28794002/klf4-regulation-of-ch25h-and-lxr-mitigates-atherosclerosis-susceptibility
#19
Zhao Li, Marcy Martin, Jin Zhang, Hsi-Yuan Huang, Liang Bai, Jiao Zhang, Jian Kang, Ming He, Jie Li, Mano R Maurya, Shakti Gupta, Guangjin Zhou, Panjamaporn Sangwung, Yong-Jiang Xu, Ting Lei, Hsien-Da Huang, Mohit Jain, Mukesh K Jain, Shankar Subramaniam, John Y-J Shyy
Background -Atherosclerosis is a multifaceted inflammatory disease involving cells in the vascular wall [e.g., endothelial cells (ECs)] as well as circulating and resident immunogenic cells (e.g., monocytes/macrophages). Acting as a ligand for liver X receptor (LXR), but an inhibitor of sterol regulatory element binding protein 2 (SREBP2), 25-hydroxycholesterol (25-HC) and its catalyzing enzyme cholesterol-25-hydroxylase (Ch25h) are important in regulating cellular inflammatory status and cholesterol biosynthesis in both ECs and monocytes/macrophages...
August 9, 2017: Circulation
https://www.readbyqxmd.com/read/28777751/association-studies-of-specific-cholesterol-related-genes-apoe-lpl-and-cetp-with-lipid-profile-and-memory-function-a-correlative-study-among-rural-and-tribal-population-of-dharmapuri-district-india
#20
Sabapathy Periyasamy, Mohan Sathya, Chennakesavan Karthick, Mahesh Kandasamy, Sellathamby Shanmugaapriya, Jeyavelu Tamilselvan, Kesavan Swaminathan Jayachandran, Muthuswamy Anusuyadevi
 Epidemiological studies state that dementia has multiple etiologies including genetic mutation, genetic variation, and environmental factors. Accumulating evidence suggests that dysregulation of cholesterol homeostasis is the major etiological factor in initiating neurodegeneration. Apolipoprotein E (APOE) polymorphic alleles and associated polymorphism of lipoprotein lipase (LPL) and cholesteryl ester transfer protein (CETP) that are important components in regulating cholesterol metabolism are implicated in neurodegenerative diseases...
2017: Journal of Alzheimer's Disease: JAD
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