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APOE Gene

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https://www.readbyqxmd.com/read/28431521/a-reference-floral-transcriptome-of-sexual-and-apomictic-paspalum-notatum
#1
Juan Pablo A Ortiz, Santiago Revale, Lorena A Siena, Maricel Podio, Luciana Delgado, Juliana Stein, Olivier Leblanc, Silvina C Pessino
BACKGROUND: Paspalum notatum Flügge is a subtropical grass native to South America, which includes sexual diploid and apomictic polyploid biotypes. In the past decade, a number of apomixis-associated genes were discovered in this species through genetic mapping and differential expression surveys. However, the scarce information on Paspalum sequences available in public databanks limited annotations and functional predictions for these candidates. RESULTS: We used a long-read 454/Roche FLX+ sequencing strategy to produce robust reference transcriptome datasets from florets of sexual and apomictic Paspalum notatum genotypes and delivered a list of transcripts showing differential representation in both reproductive types...
April 21, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28430712/apolipoprotein-e-variants-and-genetic-susceptibility-to-combat-related-post-traumatic-stress-disorder-a-meta-analysis
#2
Yang Roby
BACKGROUND: Apolipoprotein E (APOE) has recently been studied as a risk factor for association with developing combat-related post-traumatic stress disorder (PTSD) in the military population. These studies have yielded inconsistent findings. The present study carried out a meta-analysis to establish whether the APOE polymorphism confers increased susceptibility to combat-related PTSD. METHODS: PubMed, Medline, Embase, PsycInfo, and Google Scholar were searched for potential publications relating to patients with PTSD in military settings with combat exposure...
April 18, 2017: Psychiatric Genetics
https://www.readbyqxmd.com/read/28430632/association-analysis-of-apo-gene-polymorphisms-with-ischemic-stroke-risk-a-case-control-study-in-a-chinese-han-population
#3
Rongjun Xiao, Shuaiqi Sun, Jiayi Zhang, Yongri Ouyang, Ning Zhang, Min Yang, Tianbo Jin, Ying Xia
This study aimed to assess the association of APO gene polymorphisms and ischemic stroke risk in a Chinese Han population. In this case-control study, we geno-typed 14 single nucleotide polymorphisms (SNPs) in 3 APO genes in 488 cases and 503 controls using Sequenom Mass-ARRAY technology and evaluated their association with ischemic stroke using the χ2 and genetic model analysis. In the allelic model analysis, we determined three SNPs were significantly associated with ischemic stroke: rs693 with a p value of 0...
February 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28429734/neuroprotective-pentapeptide-cn-105-is-associated-with-reduced-sterile-inflammation-and-improved-functional-outcomes-in-a-traumatic-brain-injury-murine-model
#4
Daniel T Laskowitz, Haichen Wang, Tony Chen, David T Lubkin, Viviana Cantillana, Tian Ming Tu, Dawn Kernagis, Guanen Zhou, Gary Macy, Bradley J Kolls, Hana N Dawson
At present, there are no proven pharmacological treatments demonstrated to improve long term functional outcomes following traumatic brain injury(TBI). In the setting of non-penetrating TBI, sterile brain inflammatory responses are associated with the development of cerebral edema, intracranial hypertension, and secondary neuronal injury. There is increasing evidence that endogenous apolipoprotein E(apoE) modifies the neuroinflammatory response through its role in downregulating glial activation, however, the intact apoE holoprotein does not cross the blood-brain barrier due to its size...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28427397/hvc1-ameliorates-hyperlipidemia-and-inflammation-in-ldlr-mice
#5
Se-Yun Cheon, Kyung-Sook Chung, Kyung-Jin Lee, Ho-Young Choi, In-Hye Ham, Dong-Hoon Jung, Yun-Yeop Cha, Hyo-Jin An
BACKGROUND: HVC1 consists of Coptidis Rhizoma (dried rhizome of Coptischinensis), Scutellariae Radix (root of Scutellariabaicalensis), Rhei Rhizoma (rhizome of Rheum officinale), and Pruni Cortex (cortex of Prunusyedoensis Matsum). Although the components are known to be effective in various conditions such as inflammation, hypertension, and hypercholesterolemia, there are no reports of the molecular mechanism of its hypolipidemic effects. METHODS: We investigated the hypolipidemic effect of HVC1 in low-density lipoprotein receptor-deficient (LDLR(-/-)) mice fed a high-cholesterol diet for 13 weeks...
April 20, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28425466/crystal-structures-of-the-no-sensor-nsrr-reveal-how-its-iron-sulfur-cluster-modulates-dna-binding
#6
Anne Volbeda, Erin L Dodd, Claudine Darnault, Jason C Crack, Oriane Renoux, Matthew I Hutchings, Nick E Le Brun, Juan C Fontecilla-Camps
NsrR from Streptomyces coelicolor (Sc) regulates the expression of three genes through the progressive degradation of its [4Fe-4S] cluster on nitric oxide (NO) exposure. We report the 1.95 Å resolution crystal structure of dimeric holo-ScNsrR and show that the cluster is coordinated by the three invariant Cys residues from one monomer and, unexpectedly, Asp8 from the other. A cavity map suggests that NO displaces Asp8 as a cluster ligand and, while D8A and D8C variants remain NO sensitive, DNA binding is affected...
April 20, 2017: Nature Communications
https://www.readbyqxmd.com/read/28423226/rvx-208-a-novel-bet-protein-inhibitor-role-as-an-inducer-of-apo-a-i-hdl-and-beyond
#7
Gopal C Ghosh, Rajarshi Bhadra, Raktim K Ghosh, Kinjal Banerjee, Anjan Gupta
Low density cholesterol (LDL) has been the prime target of currently available lipid-lowering therapies although current research is expanding the focus beyond LDL lowering and has included high density cholesterol (HDL) also as the target. Bromo and extra-terminal (BET) proteins are implicated in the regulation of transcription of several regulatory genes and regulation of pro-inflammatory pathways. As atherosclerosis is an inflammatory pathway and studies showed that BET inhibition has a role in inhibiting inflammation, the concept of BET inhibition came in the field of atherosclerosis...
April 19, 2017: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/28419519/deletion-of-a-distal-rankl-gene-enhancer-delays-progression-of-atherosclerotic-plaque-calcification-in-hypercholesterolemic-mice
#8
Sohel Shamsuzzaman, Melda Onal, Hillary C St John, J Wesley Pike
Receptor activator of NF-κB ligand (RANKL) is a TNFα-like cytokine which mediates diverse physiological functions including bone remodeling and immune regulation. RANKL has been identified in atherosclerotic lesions; however, its role in atherosclerotic plaque development remains elusive. An enhancer located 75kb upstream of the murine RANKL gene's transcription start site designated D5 is important for its calciotropic hormone- and cytokine-mediated expression. Here, we determined the impact of RANKL levels in atherosclerotic plaque development in the D5 enhancer-null (D5(-/-) ) mice in an atherogenic Apoe(-/-) background fed a high-fat diet (HFD)...
April 17, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28417558/the-tcn2-variant-of-rs9606756-ile23val-acts-as-risk-loci-for-obesity-related-traits-and-mediates-by-interacting-with-apo-a1
#9
Prashantha Hebbar, Fadi Alkayal, Rasheeba Nizam, Motasem Melhem, Naser Elkum, Sumi Elsa John, Mohamed Abufarha, Osama Alsmadi, Thangavel Alphonse Thanaraj
OBJECTIVE: Despite alarming obesity levels in the Arabian Peninsula, its population lacks convincingly identified genetic determinants of obesity. A genome-wide association study was performed for obesity-related anthropometric traits in Arabs and to decipher mechanisms by which the variants mediate traits. METHODS: The Illumina HumanOmniExpress BeadChip was used to genotype 1,353 Arab individuals (largely with Class I obesity) from Kuwait. Genome-wide association tests for obesity-related anthropometric traits were performed...
April 17, 2017: Obesity
https://www.readbyqxmd.com/read/28415654/the-associations-between-the-mapt-polymorphisms-and-alzheimer-s-disease-risk-a-meta-analysis
#10
REVIEW
Futao Zhou, Danli Wang
Published studies revealed that the microtubule-associated protein tau (MAPT) gene polymorphisms increased Alzheimer's disease (AD) risk; the associations of 4 single nucleotide polymorphisms (SNPs, rs242557G/A, rs2471738C/T, rs3785883G/A and rs1467967A/G) of the MAPT gene with AD risk, however, remain inconclusive. Here, we conducted a meta-analysis to investigate the relationship between the MAPT SNPs and AD risk. A significant association of SNP rs242557 with AD risk was found in a dominant [odds ratio (OR) = 1...
March 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28408925/combination-therapy-with-a-sodium-glucose-cotransporter-2-inhibitor-and-a-dipeptidyl-peptidase-4-inhibitor-additively-suppresses-macrophage-foam-cell-formation-and-atherosclerosis-in-diabetic-mice
#11
Michishige Terasaki, Munenori Hiromura, Yusaku Mori, Kyoko Kohashi, Hideki Kushima, Makoto Ohara, Takuya Watanabe, Olov Andersson, Tsutomu Hirano
Dipeptidyl peptidase-4 inhibitors (DPP-4is), in addition to their antihyperglycemic roles, have antiatherosclerotic effects. We reported that sodium-glucose cotransporter 2 inhibitors (SGLT2is) suppress atherosclerosis in a glucose-dependent manner in diabetic mice. Here, we investigated the effects of combination therapy with SGLT2i and DPP-4i on atherosclerosis in diabetic mice. SGLT2i (ipragliflozin, 1.0 mg/kg/day) and DPP-4i (alogliptin, 8.0 mg/kg/day), either alone or in combination, were administered to db/db mice or streptozotocin-induced diabetic apolipoprotein E-null (Apoe(-/-) ) mice...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/28406978/combined-assessment-of-serum-folate-and-hemoglobin-as-biomarkers-of-brain-amyloid-%C3%AE-accumulation
#12
Takuma Yoshinaga, Hiroto Nishimata, Yoriko Kajiya, Shunichi Yokoyama
A relationship between Alzheimer's disease (AD) and folate has been reported. Amyloid positron emission tomography (PET) is currently one of the most reliable biomarkers for AD. We investigated the correlation between serum folate levels and amyloid imaging to clarify whether serum folate could be a biomarker for AD. We also examined the usefulness of a combined assessment of serum folate levels and red blood cell hemoglobin content. Apolipoprotein E (APOE) gene polymorphisms were also assessed. Serum folate levels and hemoglobin content were evaluated by receiver operating characteristic analysis for their diagnostic capability as AD biomarkers relating to brain amyloid β accumulation...
2017: PloS One
https://www.readbyqxmd.com/read/28404852/attachment-and-post-attachment-receptors-important-for-hepatitis-c-virus-infection-and-cell-to-cell-transmission
#13
Huahao Fan, Luhua Qiao, Kyung-Don Kang, Junfen Fan, Wensheng Wei, Guangxiang Luo
Hepatitis C virus (HCV) infection requires multiple receptors for its attachment and entry to the cell. Our previous studies found that human syndecan-1 (SDC-1), SDC-2, and T cell immunoglobulin and mucin domain-containing protein 1 (TIM-1) are HCV attachment receptors. Other cell surface molecules such as CD81, CLDN1, OCLN, SR-BI, and LDLR mainly function at post-attachment steps, which are considered post-attachment receptors. The underlying molecular mechanisms of different receptors in HCV cell-free and cell-to-cell transmission remain elusive...
April 12, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28400210/derepression-of-sapibov1-is-independent-of-%C3%AF-nm1-type-2-dutpase-activity-and-is-inhibited-by-dutp-and-dump
#14
Rosanne L L Hill, Jiri Vlach, Laura K Parker, Gail E Christie, Jamil S Saad, Terje Dokland
Staphylococcus aureus is an opportunistic human pathogen able to transfer virulence genes to other cells through the mobilization of S. aureus pathogenicity islands (SaPIs). SaPIs are derepressed and packaged into phage-like transducing particles by helper phages like 80α or φNM1. Phages 80α and φNM1 encode structurally distinct dUTPases, Dut80α (type 1) and DutNM1 (type 2). Both dUTPases can interact with the SaPIbov1 Stl master repressor, leading to derepression and mobilization. That two structurally distinct dUTPases bind the same repressor led us to speculate that dUTPase activity may be important to the derepression process...
April 8, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/28399420/dietary-rose-hip-exerts-antiatherosclerotic-effects-and-increases-nitric-oxide-mediated-dilation-in-apoe-null-mice
#15
Michele Cavalera, Ulrika Axling, Catarina Rippe, Karl Swärd, Cecilia Holm
Atherosclerosis is a disease in which atheromatous plaques develop inside arteries, leading to reduced or obstructed blood flow that in turn may cause stroke and heart attack. Rose hip is the fruit of plants of the genus Rosa, belonging to the Rosaceae family, and it is rich in antioxidants with high amounts of ascorbic acid and phenolic compounds. Several studies have shown that fruits, seeds and roots of these plants exert antidiabetic, antiobesity and cholesterol-lowering effects in rodents as well as humans...
March 21, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28399184/genetic-factors-influencing-frontostriatal-dysfunction-and-the-development-of-dementia-in-parkinson-s-disease
#16
Ismael Huertas, Silvia Jesús, Francisco Javier García-Gómez, José Antonio Lojo, Inmaculada Bernal-Bernal, Marta Bonilla-Toribio, Juan Francisco Martín-Rodriguez, David García-Solís, Pilar Gómez-Garre, Pablo Mir
The dual syndrome hypothesis for cognitive impairment in Parkinson's disease (PD) establishes a dichotomy between a frontrostriatal dopamine-mediated syndrome, which leads to executive deficits, and a posterior cortical syndrome, which leads to dementia. Certain genes have been linked to these syndromes although the exact contribution is still controversial. The study's objective was to investigate the role of APOE, MAPT, COMT, SNCA and GBA genes in the dual syndromes. We genotyped APOE (rs429358 and rs7412), MAPT (rs9468), COMT (rs4680) and SNCA (rs356219) risk polymorphisms and sequenced GBA in a cohort of 298 PD patients...
2017: PloS One
https://www.readbyqxmd.com/read/28397370/conservation-and-diversity-of-the-irre-ddro-controlled-radiation-response-in-radiation-resistant-deinococcus-bacteria
#17
Laurence Blanchard, Philippe Guérin, David Roche, Stéphane Cruveiller, David Pignol, David Vallenet, Jean Armengaud, Arjan de Groot
The extreme radiation resistance of Deinococcus bacteria requires the radiation-stimulated cleavage of protein DdrO by a specific metalloprotease called IrrE. DdrO is the repressor of a predicted radiation/desiccation response (RDR) regulon, composed of radiation-induced genes having a conserved DNA motif (RDRM) in their promoter regions. Here, we showed that addition of zinc ions to purified apo-IrrE, and short exposure of Deinococcus cells to zinc ions, resulted in cleavage of DdrO in vitro and in vivo, respectively...
April 11, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/28396151/increased-urine-acylcarnitines-in-diabetic-apoe-mice-hydroxytetradecadienoylcarnitine-c14-2-oh-reflects-diabetic-nephropathy-in-a-context-of-hyperlipidemia
#18
Koryun Mirzoyan, Kristaps Klavins, Therese Koal, Marion Gillet, Dimitri Marsal, Colette Denis, Julie Klein, Jean-Loup Bascands, Joost P Schanstra, Jean-Sébastien Saulnier-Blache
Hyperlipidemia is a risk factor for initiation and progression of diabetic nephropathy but the metabolic pathways altered in the diabetic kidney in a context of hyperlipidemia remain incompletely described. Assuming that changes in urine composition reflect the alteration of renal metabolism and function, we analyzed the urine metabolite composition of diabetic (streptozotocin-treatment) and control (non diabetic) ApoE-/- mice fed a high cholesterol diet using targeted quantitative metabolomics. Urine metabolome was also compared to the plasma metabolome of the same animals...
April 7, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28394319/activation-of-nlrp3-inflammasomes-contributes-to-hyperhomocysteinemia-aggravated-inflammation-and-atherosclerosis-in-apoe-deficient-mice
#19
Renqing Wang, Yiqin Wang, Nana Mu, Xiaoying Lou, Weixuan Li, Yanming Chen, Dong Fan, Hongmei Tan
Hyperhomocysteinemia (HHcy) has been shown to promote vascular inflammation and atherosclerosis, but the underlying mechanisms remain largely unknown. The NLRP3 inflammasome has been identified as the cellular machinery responsible for activation of inflammatory processes. In this study, we hypothesized that the activation of NLRP3 inflammasomes contributes to HHcy-induced inflammation and atherosclerosis. ApoE(-/-) mice were fed regular chow, high-fat (HF) diet, or HF plus high methionine diet to induce HHcy...
April 10, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28391878/autosomal-dominant-familial-dysbetalipoproteinemia-a-pathophysiological-framework-and-practical-approach-to-diagnosis-and-therapy
#20
REVIEW
Charlotte Koopal, A David Marais, Jan Westerink, Frank L J Visseren
Familial dysbetalipoproteinemia (FD) is a genetic disorder of lipoprotein metabolism associated with an increased risk for premature cardiovascular disease. In about 10% of the cases, FD is caused by autosomal dominant mutations in the apolipoprotein E gene (APOE). This review article provides a pathophysiological framework for autosomal dominant FD (ADFD) and discusses diagnostic challenges and therapeutic options. The clinical presentation and diagnostic work-up of ADFD are illustrated by two cases: a male with premature coronary artery disease and a p...
January 2017: Journal of Clinical Lipidology
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