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APOE Gene

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https://www.readbyqxmd.com/read/29330760/oxidized-phospholipids-stimulate-production-of-stem-cell-factor-via-nrf2-dependent-mechanisms
#1
Taras Afonyushkin, Olga V Oskolkova, Valery N Bochkov
Receptor tyrosine kinase c-Kit and its ligand stem cell factor (SCF) regulate resident vascular wall cells and recruit circulating progenitors. We tested whether SCF may be induced by oxidized palmitoyl-arachidonoyl-phosphatidylcholine (OxPAPC) known to accumulate in atherosclerotic vessels. Gene expression analysis demonstrated OxPAPC-induced upregulation of SCF mRNA and protein in different types of endothelial cells (ECs). Elevated levels of SCF mRNA were observed in aortas of ApoE-/- knockout mice. ECs produced biologically active SCF because conditioned medium from OxPAPC-treated cells stimulated activation (phosphorylation) of c-Kit in naïve ECs...
January 12, 2018: Angiogenesis
https://www.readbyqxmd.com/read/29325450/symptom-science-omics-supports-common-biological-underpinnings-across-symptoms
#2
Maura K McCall, Ansley Grimes Stanfill, Elizabeth Skrovanek, Jessica Renee Pforr, Susan W Wesmiller, Yvette P Conley
For precision health care to be successful, an in-depth understanding of the biological mechanisms for symptom development and severity is essential. Omics-based research approaches facilitate identification of the biological underpinnings of symptoms. We reviewed literature for omics-based approaches and exemplar symptoms (sleep disruption, cognitive impairment, fatigue, gastrointestinal [GI] distress, and pain) to identify genes associated with the symptom or symptoms across disease processes. The review yielded 27 genes associated with more than one symptom...
January 1, 2018: Biological Research for Nursing
https://www.readbyqxmd.com/read/29320745/the-foxo1-inducible-transcriptional-repressor-zfp125-causes-hepatic-steatosis-and-hypercholesterolemia
#3
Gustavo W Fernandes, Barbara M L C Bocco, Tatiana L Fonseca, Elizabeth A McAninch, Sungro Jo, Lattoya J Lartey, InSug O-Sullivan, Terry G Unterman, Nailliw Z Preite, Robin M Voigt, Christopher B Forsyth, Ali Keshavarzian, Richárd Sinkó, Allison B Goldfine, Mary E Patti, Miriam O Ribeiro, Balázs Gereben, Antonio C Bianco
Liver-specific disruption of the type 2 deiodinase gene (Alb-D2KO) results in resistance to both diet-induced obesity and liver steatosis in mice. Here, we report that this is explained by an ∼60% reduction in liver zinc-finger protein-125 (Zfp125) expression. Zfp125 is a Foxo1-inducible transcriptional repressor that causes lipid accumulation in the AML12 mouse hepatic cell line and liver steatosis in mice by reducing liver secretion of triglycerides and hepatocyte efflux of cholesterol. Zfp125 acts by repressing 18 genes involved in lipoprotein structure, lipid binding, and transport...
January 9, 2018: Cell Reports
https://www.readbyqxmd.com/read/29313574/a-study-of-genetic-markers-in-patients-of-rheumatoid-arthritis-and-their-co-relation-with-severity-of-the-disease
#4
Gauri Liyakat Ali, Suman Kapur, Sai Chinmayi, Qadir Fatima, Harshal Pise, Asim Khan, Ambreen Liyakat, V Jilova, Urvashi Dube
Introduction: Dyslipidemia has been reported to attribute to early death due to increased atherosclerosis leading to CVDs in patients with RA. Recent reports have suggested a role of adipocytokines in mediating joint damage rheumatoid arthritis (RA). RA has long been associated with increased cardiovascular risk as atherosclerosis is more prevalent in patients of RA than in the general population. Specific alleles of APOE gene have been reported to be associated with risk for atherosclerosis and LEP gene alleles have been associated with increased BMI...
September 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/29313544/dietary-supplementation-of-defatted-kenaf-hibiscus-cannabinus-l-seed-meal-and-its-phenolics-saponins-rich-extract-effectively-attenuates-diet-induced-hypercholesterolemia-in-rats
#5
Kim Wei Chan, Maznah Ismail, Norhaizan Mohd Esa, Mustapha Umar Imam, Der Jiun Ooi, Nicholas M H Khong
Kenaf is one of the important commercial fiber crops worldwide and defatted kenaf seed meal (DKSM) is a secondary by-product from the kenaf industry. Thus, efforts to turn this low-cost agricultural waste into value-added functional food ingredients will definitely bring advantageous impacts to the community health, environment and economy. The present study was aimed to investigate the cardioprotective properties of DKSM and its phenolics-saponins rich extract (PSRE) in diet-induced hypercholesterolemic rat model...
January 9, 2018: Food & Function
https://www.readbyqxmd.com/read/29301387/pharmacogenetics-of-vascular-risk-factors-in-alzheimer-s-disease
#6
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
https://www.readbyqxmd.com/read/29285134/sicyos-angulatus-ameliorates-atherosclerosis-through-downregulation-of-aortic-inflammatory-responses-in-apolipoprotein-e-deficient-mice
#7
Yong-Hoon Kim, Jung-Ran Noh, Jung Hwan Hwang, Kyoung-Shim Kim, Dong-Hee Choi, Jin-Pyo An, Won-Keun Oh, Chul-Ho Lee
Sicyos angulatus (SA), a summer annual vine originating from Northeastern USA, is a widely distributed noxious invasive plant. However, the clinical application of SA has not been investigated previously. The purpose of present study was to determine the effects of SA on atherosclerosis and its underlying mechanism. Atherosclerosis was induced by feeding apolipoprotein E-deficient (apoE-/-) mice with an atherogenic diet for 8 weeks. SA was administered daily by oral gavage during induction of atherosclerosis...
December 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29278888/healthy-versus-entorhinal-cortical-atrophy-identification-in-asymptomatic-apoe4-carriers-at-risk-for-alzheimer-s-disease
#8
Kyoko Konishi, Ridha Joober, Judes Poirier, Kathleen MacDonald, Mallar Chakravarty, Raihaan Patel, John Breitner, Véronique D Bohbot
Early detection of Alzheimer's disease (AD) has been challenging as current biomarkers are invasive and costly. Strong predictors of future AD diagnosis include lower volume of the hippocampus and entorhinal cortex, as well as the ɛ4 allele of the Apolipoprotein E gene (APOE) gene. Therefore, studying functions that are critically mediated by the hippocampus and entorhinal cortex, such as spatial memory, in APOE ɛ4 allele carriers, may be key to the identification of individuals at risk of AD, prior to the manifestation of cognitive impairments...
December 16, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29273831/synergism-between-apolipoprotein-e-%C3%A6-4-allele-and-paraoxonase-pon1-55-m-allele-is-associated-with-risk-of-systemic-lupus-erythematosus
#9
Maryam Tanhapour, Ali Miri, Asad Vaisi-Raygani, Fariborz Bahrehmand, Amir Kiani, Zohreh Rahimi, Tayebeh Pourmotabbed, Ebrahim Shakiba
Evidences indicate that abnormal lipid metabolism and lipid peroxidation can affect the progression of complications in systemic lupus erythematosus (SLE) patients. Apolipoprotein E (ApoE) and paraoxonase-1 (PON1) play important role in lipid metabolism and protection of lipid peroxidation. The polymorphisms of ApoE and paraoxonase (PON1) L55M (Met < Leu) allele genes lead to disorders in lipid metabolism and are related to atherosclerosis. This study is the first investigation to examine the possible association between ApoE and PON1-L55M polymorphisms and correlation with serum arylesterase (ARE) activities of PON, levels of malondialdehyde (MDA), neopterin, and lipid lipoprotein in SLE patients from Iranian western population...
December 22, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/29259249/comparative-profiling-of-cortical-gene-expression-in-alzheimer-s-disease-patients-and-mouse-models-demonstrates-a-link-between-amyloidosis-and-neuroinflammation
#10
Erika Castillo, Julio Leon, Guianfranco Mazzei, Nona Abolhassani, Naoki Haruyama, Takashi Saito, Takaomi Saido, Masaaki Hokama, Toru Iwaki, Tomoyuki Ohara, Toshiharu Ninomiya, Yutaka Kiyohara, Kunihiko Sakumi, Frank M LaFerla, Yusaku Nakabeppu
Alzheimer's disease (AD) is the most common form of dementia, characterized by accumulation of amyloid β (Aβ) and neurofibrillary tangles. Oxidative stress and inflammation are considered to play an important role in the development and progression of AD. However, the extent to which these events contribute to the Aβ pathologies remains unclear. We performed inter-species comparative gene expression profiling between AD patient brains and the App NL-G-F/NL-G-F and 3xTg-AD-H mouse models. Genes commonly altered in App NL-G-F/NL-G-F and human AD cortices correlated with the inflammatory response or immunological disease...
December 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29258400/evaluation-of-apoe-genotype-and-ability-to-perform-activities-of-daily-living-following-aneurysmal-subarachnoid-hemorrhage
#11
Lacey Wright Heinsberg, Eleanor Turi, Dianxu Ren, Elizabeth Crago, Sheila Alexander, Ansley Grimes Stanfill, Yvette Perry Conley
Survivors of aneurysmal subarachnoid hemorrhage (aSAH) often experience unfavorable functional outcomes that result in a reduced ability to independently perform activities of daily living. The apolipoprotein E gene ( APOE) encodes for a protein known to facilitate lipid transport and aid in neuronal repair within the central nervous system and to moderate the inflammatory response, making functional variations in this gene likely candidate biomarkers to predict outcomes following aSAH. In the present work, we examined the relationship between APOE genotype and the ability to perform activities of daily living as measured by the Barthel Index (BI) score at 3 months ( n = 298) and 12 months ( n = 288) following aSAH...
January 1, 2017: Biological Research for Nursing
https://www.readbyqxmd.com/read/29250672/association-of-the-blood-serum-cytokines-rate-and-lymphocytes-apoptosis-with-polymorphic-variants-of-the-bcl-2-rs17759659-ctla-4-rs231775-and-apo-1%C3%A3-fas-rs2234767-genes-in-patients-with-nodular-goiters-in-autoimmune-thyroiditis-and-thyroid-adenoma
#12
Michael Ivanovich Sheremet, Larysa Petrivna Sydorchuk, Viktor Oleksandrovych Shidlovskyi, Ruslan Igorovych Sydorchuk, Oleksandr Viktorovych Shidlovskyi, Vitaliy Vasilyovich Maksymyuk, Volodymyr Volodymyrovych Bezruk, Nina Petrivna Tkachuk, Viktor Markiyanovich Batig, Oleksandr Viktorovych Mytchenok, Tetyana Oleksandrivna Bezruk, Kristina Andreyvna Chympoi
The paper analyses results of serum cytokines and lymphocyte apoptosis study in patients with nodular goiter against the background of autoimmune thyroiditis (NGAIT) and thyroid adenoma (TA) based on the cell preparedness to apoptosis (content of lymphocytes carrying apoptosis marker - CD95+-receptor), the number of apoptotic lymphocytes (annexin V+-lymphocytes) and the content of proapoptotic tumor necrosis factor-alpha (TNF-α), interleukin (IL)-1β and IL-6, as well as anti-inflammatory IL-4 cytokine in serum, considering the polymorphism of BCL-2 (rs17759659), CTLA-4 (rs231775) and APO-1÷FAS (rs2234767) genes...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/29247843/dietary-betaine-supplementation-in-hens-modulates-hypothalamic-expression-of-cholesterol-metabolic-genes-in-f1-cockerels-through-modification-of-dna-methylation
#13
Abdulrahman A Idriss, Yun Hu, Zhen Hou, Yan Hu, Qinwei Sun, Nagmeldin A Omer, Halima Abobaker, Yingdong Ni, Ruqian Zhao
Betaine is widely used in animal nutrition to promote growth, development and methyl donor during methionine metabolism through nutritional reprogramming via regulation of gene expression. Prenatal betaine exposure is reported to modulate hypothalamic cholesterol metabolism in chickens, yet it remains unknown whether feeding hens with betaine-supplemented diet may affect hypothalamic cholesterol metabolism in F1 offspring. In this study, hens were fed with basal or betaine-supplemented (0.5%) for 30days, and the eggs were collected for incubation...
December 14, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/29246571/generation-and-characterization-of-human-induced-pluripotent-stem-cell-hipsc-lines-from-an-alzheimer-s-disease-asui003-a-and-non-demented-control-asui004-a-patient-homozygous-for-the-apolipoprotein-e4-apoe4-risk-variant
#14
Nicholas Brookhouser, Ping Zhang, Richard Caselli, Jean J Kim, David A Brafman
Although the majority of late-onset Alzheimer's disease (AD) patients are labeled sporadic, multiple genetic risk variants have been identified, the most powerful and prevalent of which is the e4 variant of the Apolipoprotein E (APOE) gene. Here, we generated human induced pluripotent stem cell (hiPSC) lines from the peripheral blood mononuclear cells (PBMCs) of a clinically diagnosed AD patient [ASUi003-A] and a non-demented control (NDC) patient [ASUi004-A] homozygous for the APOE4 risk allele. These hiPSCs maintained their original genotype, expressed pluripotency markers, exhibited a normal karyotype, and retained the ability to differentiate into cells representative of the three germ layers...
December 2017: Stem Cell Research
https://www.readbyqxmd.com/read/29231996/molecular-mechanisms-of-tributyltin-induced-alterations-in-cholesterol-homeostasis-and-steroidogenesis-in-hamster-testis-in-vivo-and-in-vitro-studies
#15
V Kanimozhi, K Palanivel, M A Akbarsha, B Kadalmani
Tributyltins (TBT) are ubiquitous and persistent environmental contaminants that disturb normal endocrine function including gonadal function in humans and marine organisms. TBT was administered through oral route to male Syrian hamsters at daily doses of 50, 100 and 150 ppm/kg for 65 days. Changes in testis morphology, immunohistochemistry of iNOS, 3β-HSD and 17β-HSD, cholesterol transport receptor, nuclear receptors, and transcription factors were analyzed. TBT treatment affected each of these parameters to significant levels in a dose-dependent manner compared to vehicle treated control...
December 12, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29229897/integrative-analysis-to-identify-common-genetic-markers-of-metabolic-syndrome-dementia-and-diabetes
#16
Weihong Zhang, Linlin Xin, Ying Lu
BACKGROUND Emerging data have established links between systemic metabolic dysfunction, such as diabetes and metabolic syndrome (MetS), with neurocognitive impairment, including dementia. The common gene signature and the associated signaling pathways of MetS, diabetes, and dementia have not been widely studied. MATERIAL AND METHODS We exploited the translational bioinformatics approach to choose the common gene signatures for both dementia and MetS. For this we employed "DisGeNET discovery platform". RESULTS Gene mining analysis revealed that a total of 173 genes (86 genes common to all three diseases) which comprised a proportion of 43% of the total genes associated with dementia...
December 12, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29227739/chronic-exposure-to-external-low-dose-gamma-radiation-induces-an-increase-in-anti-inflammatory-and-anti-oxidative-parameters-resulting-in-atherosclerotic-plaque-size-reduction-in-apoe-mice
#17
T G Ebrahimian, L Beugnies, J Surette, N Priest, Y Gueguen, C Gloaguen, M Benderitter, J R Jourdain, K Tack
Populations living in radiation-contaminated territories, such as Chernobyl and Fukushima, are chronically exposed to external gamma radiation and internal radionuclide contamination due to the large amount of 137Cs released in the environment. The effect of chronic low-dose exposure on the development of cardiovascular diseases remains unclear. Previously reported studies have shown that low-dose radiation exposure could lead to discrepancies according to dose rate. In this study, we examined the effect of very low-dose and dose-rate chronic external exposure on atherosclerosis development...
December 11, 2017: Radiation Research
https://www.readbyqxmd.com/read/29221940/pioglitazone-attenuates-aging-related-disorders-in-aged-apolipoprotein-e-deficient-mice
#18
Dan Shen, Hao Li, Rui Zhou, Meng-Jie Liu, Hong Yu, Dong-Fang Wu
Pioglitazone (Piog) activates peroxisome proliferator activated receptor-γ (PPARγ) and is widely used in clinic for the treatment of diabetes mellitus. PPARγ in various tissues has the essential regulatory role of multiple metabolic function, suggest that PPARγ signaling may contribute to aging processes. However, little is known about the consequences of Piog on aging in aged animal models. We used apolipoprotein E deficient (apoE-/-) mice model to evaluate the effects of Piog on aging-related disorders...
December 5, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/29217477/activation-of-hepatic-nogo-b-receptor-expression-a-new-anti-liver-steatosis-mechanism-of-statins
#19
Wenwen Zhang, Xiaoxiao Yang, Yuanli Chen, Wenquan Hu, Lipei Liu, Xiaomeng Zhang, Mengyang Liu, Lei Sun, Ying Liu, Miao Yu, Xiaoju Li, Luyuan Li, Yan Zhu, Qing Robert Miao, Jihong Han, Yajun Duan
Deficiency of hepatic Nogo-B receptor (NgBR) expression activates liver X receptor α (LXRα) in an adenosine monophosphate-activated protein kinase α (AMPKα)-dependent manner, thereby inducing severe hepatic lipid accumulation and hypertriglyceridemia. Statins have been demonstrated non-cholesterol lowering effects including anti-nonalcoholic fatty liver disease (NAFLD). Herein, we investigated if the anti-NAFLD function of statins depends on activation of NgBR expression. In vivo, atorvastatin protected apoE deficient or NgBR floxed, but not hepatic NgBR deficient mice, against Western diet (WD)-increased triglyceride levels in liver and serum...
December 4, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29216449/apoe4-accelerates-early-seeding-of-amyloid-pathology
#20
Chia-Chen Liu, Na Zhao, Yuan Fu, Na Wang, Cynthia Linares, Chih-Wei Tsai, Guojun Bu
Accumulation and aggregation of amyloid-β (Aβ) in the brain is an initiating step in the pathogenesis of Alzheimer's disease (AD). The ε4 allele of apolipoprotein E (apoE) gene is the strongest genetic risk factor for late-onset AD. Although there is strong evidence showing that apoE4 enhances amyloid pathology, it is not clear what the critical stage(s) is during amyloid development in which apoE4 has the strongest impact. Using apoE inducible mouse models, we show that increased expression of astrocytic apoE4, but not apoE3, during the seeding stage of amyloid development enhanced amyloid deposition and neuritic dystrophy in amyloid model mice...
December 6, 2017: Neuron
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