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Low density lipoprotein receptor related protein 1

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https://www.readbyqxmd.com/read/28804438/green-tea-extract-induces-genes-related-to-browning-of-white-adipose-tissue-and-limits-weight-gain-in-high-energy-diet-fed-rat
#1
Li-Han Chen, Yi-Wen Chien, Chung-Tiang Liang, Ching-Hung Chan, Meng-Han Fan, Hui-Yu Huang
Background: A wealth of research has reported on the anti-obesity effects of green tea extract (GTE). Although browning of white adipose tissue (WAT) has been reported to attenuate obesity, no study has disclosed the effects of GTE on browning in Sprague Dawley rats. Objectives: The aims of the study were to investigate the effects of GTE on anti-obesity and browning, and their underlying mechanisms. Methods: Four groups of rats (n=10/group) were used including a normal diet with vehicle treatment, and a high-energy diet (HED) with vehicle or GTE by oral gavage at 77...
2017: Food & Nutrition Research
https://www.readbyqxmd.com/read/28798097/suramin-inhibits-osteoarthritic-cartilage-degradation-by-increasing-extracellular-levels-of-chondroprotective-tissue-inhibitor-of-metalloproteinases-3-timp-3
#2
Anastasios Chanalaris, Christine Doherty, Brian D Marsden, Gabriel Bambridge, Stephen P Wren, Hideaki Nagase, Linda Troeberg
Osteoarthritis is a common degenerative joint disease for which no disease-modifying drugs are currently available. Attempts to treat the disease with small molecule inhibitors of the metalloproteinases that degrade the cartilage matrix have been hampered by a lack of specificity. We aimed to inhibit cartilage degradation by augmenting levels of the endogenous metalloproteinase inhibitor, tissue inhibitor of metalloproteinases 3 (TIMP-3), through blocking its interaction with the endocytic scavenger receptor, low-density lipoprotein receptor-related protein 1 (LRP1)...
August 10, 2017: Molecular Pharmacology
https://www.readbyqxmd.com/read/28791417/diverse-gene-expression-patterns-in-response-to-anticancer-drugs-between-human-and-mouse-cell-lines-revealed-by-a-comparative-transcriptomic-analysis
#3
Yong Guo, Zhuoran Liang, Xiaoliang Hou, Zhi Zhang
The aim of the present study was to perform comparative genomics using gene expression profile datasets of mice and humans who had been treated with anticancer drugs, to determine the similarities and differences in the antitumor mechanisms in the two mammals. This involved data mining of antitumor gene expression regulation, and screening of genetic loci from experimental mouse models of antitumor targets, to provide a theoretical basis of drug design. Subsequently, 9 overlapping genes with opposite expression patterns were identified across mouse and human cell lines that were treated with a specific cyclin‑dependent kinase 4/6 inhibitor, PD0332991...
August 4, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28783583/influence-of-quercetin-naringenin-and-berberine-on-glucose-transporters-and-insulin-signalling-molecules-in-brain-of-streptozotocin-induced-diabetic-rats
#4
Sandeep M S, Nandini C D
Quercetin, naringenin, and berberine are plant bioactives that can cross the blood-brain barrier and offer neuroprotection. In the present study, we looked into the effect of them on expression of various glucose transporters and key components of brain insulin signalling, namely, insulin receptor substrate 1 (IRS 1), phosphatidyl inositol 3 kinase (PI3K), Akt 1 and low-density lipoprotein receptor-related protein 1 (LRP1) in brain of control, diabetic and bioactive-treated rats by Western blot. Amongst the bioactives tested, quercetin was more potent and restored LRP1 and brain insulin signalling components as well as glucose transporters such as GLUTs 1, 2, 3 and 4 in diabetic animals...
August 4, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28782037/chemotactic-synthetic-vesicles-design-and-applications-in-blood-brain-barrier-crossing
#5
Adrian Joseph, Claudia Contini, Denis Cecchin, Sophie Nyberg, Lorena Ruiz-Perez, Jens Gaitzsch, Gavin Fullstone, Xiaohe Tian, Juzaili Azizi, Jane Preston, Giorgio Volpe, Giuseppe Battaglia
In recent years, scientists have created artificial microscopic and nanoscopic self-propelling particles, often referred to as nano- or microswimmers, capable of mimicking biological locomotion and taxis. This active diffusion enables the engineering of complex operations that so far have not been possible at the micro- and nanoscale. One of the most promising tasks is the ability to engineer nanocarriers that can autonomously navigate within tissues and organs, accessing nearly every site of the human body guided by endogenous chemical gradients...
August 2017: Science Advances
https://www.readbyqxmd.com/read/28761986/smoking-cessation-reduces-the-lectin-like-low-density-lipoprotein-receptor-index-an-independent-cardiovascular-risk-marker-of-vascular-inflammation
#6
Maki Komiyama, Hiromichi Wada, Koh Ono, Hajime Yamakage, Noriko Satoh-Asahara, Sayaka Shimada, Masaharu Akao, Tatsuya Morimoto, Akira Shimatsu, Yuko Takahashi, Tatsuya Sawamura, Koji Hasegawa
Vessel wall inflammation promotes the destabilization of atherosclerotic plaques. The lectin-like oxidized low-density lipoprotein (LDL) receptor-1 (LOX-1) expressed by vascular cells and monocytes. LOX index is calculated by multiplying LOX-1 ligand containing apolipoprotein B level with the soluble LOX-1. A high LOX index reflects an increased risk for stroke and myocardial infarction. However, the change in LOX index after smoking cessation and the relationship between smoking-related variables and LOX index are unknown...
July 31, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28750079/roles-of-the-low-density-lipoprotein-receptor-and-related-receptors-in-inhibition-of-lipoprotein-a-internalization-by-proprotein-convertase-subtilisin-kexin-type-9
#7
Rocco Romagnuolo, Corey A Scipione, Santica M Marcovina, Matthew Gemin, Nabil G Seidah, Michael B Boffa, Marlys L Koschinsky
Elevated plasma concentrations of lipoprotein(a) (Lp(a)) are a causal risk factor for cardiovascular disease. The mechanisms underlying Lp(a) clearance from plasma remain unclear, which is an obvious barrier to the development of therapies to specifically lower levels of this lipoprotein. Recently, it has been documented that monoclonal antibody inhibitors of proprotein convertase subtilisin/kexin type 9 (PCSK9) can lower plasma Lp(a) levels by 30%. Since PCSK9 acts primarily through the low density lipoprotein receptor (LDLR), this result is in conflict with the prevailing view that the LDLR does not participate in Lp(a) clearance...
2017: PloS One
https://www.readbyqxmd.com/read/28743230/cart-modulates-beta-amyloid-metabolism-associated-enzymes-and-attenuates-memory-deficits-in-app-ps1-mice
#8
Kailin Yin, Jiali Jin, Xiaolei Zhu, Linjie Yu, Sulei Wang, Lai Qian, Lijuan Han, Yun Xu
INTRODUCTION: Cocaine- and amphetamine-regulated transcript (CART) peptide has been demonstrated to exert neuroprotective effects in stroke and some neurodegeneration diseases. In current study, we investigated the protective effects and underlying mechanisms of CART in APP/PS1 mice. METHODS: The protein levels of CART, soluble Aβ1-40 and Aβ1-42 were measured in the hippocampus of APP/PS1 mice by enzyme-linked immunosorbent assay. We determined the mRNA and protein levels of Aβ metabolism-associated enzymes including neprilysin (NEP), insulin-degrading enzyme (IDE), receptor for advanced glycation end products (RAGE), and low-density lipoprotein receptor-related protein 1 (LRP-1) in the hippocampus of APP/PS1 mice using real-time PCR and western blotting...
July 25, 2017: Neurological Research
https://www.readbyqxmd.com/read/28734203/exenatide-mitigated-diet-induced-vascular-aging-and-atherosclerotic-plaque-growth-in-apoe-deficient-mice-under-chronic-stress
#9
Guang Yang, Yanna Lei, Aiko Inoue, Limei Piao, Lina Hu, Haiying Jiang, Takeshi Sasaki, Hongxian Wu, Wenhu Xu, Chenglin Yu, Guangxian Zhao, Shinyu Ogasawara, Kenji Okumura, Masafumi Kuzuya, Xian-Wu Cheng
BACKGROUND AND AIMS: Exposure to psychosocial stress is a risk factor for cardiovascular disorders. Because the glucagon-like peptide-1 (GLP-1) receptor (GLP-1R) agonist prevents cardiovascular injury, we investigated the beneficial effects and mechanism of the GLP-1 analogue exenatide on stress-related vascular senescence and atherosclerosis in apolipoprotein E-deficient (ApoE(-/-)) mice fed a high-fat (HF) diet. METHODS: ApoE(-/-) mice fed the HF diet were assigned to non-stressed and immobilized-stress groups for 12 weeks...
July 13, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28712390/-the-oxldl-%C3%AE-2gpi-%C3%AE-2gpi-ab-complex-promotes-the-migration-and-the-expression-of-inflammatory-cytokines-in-human-umbilical-vein-endothelial-cells
#10
Qianqian Cai, Hong Zhou, Guiting Zhang, Chao He, Xiaojie Zhu, Xiaoyan Wang, Hang Ouyang
Objective To study the effects of the complex of oxidized low density lipoprotein/β2-glycoprotein I/β2-glycoprotein I antibodies (oxLDL/β2GPI/β2GPI-Ab) on the migration of human umbilical vein endothelial cells (HUVECs) and the expression of inflammatory cytokines, and their underlying Toll-like receptor (TLR4) pathway. Methods HUVECs were treated with oxLDL, oxLDL/β2GPI complex, oxLDL/β2GPI-Ab complex, oxLDL/β2GPI/β2GPI-Ab complex, or lipopolysaccharide (LPS) for a period of time in their corresponding groups...
July 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28710453/intrinsic-dynamics-study-identifies-two-amino-acids-of-timp-1-critical-for-its-lrp-1-mediated-endocytosis-in-neurons
#11
Laurie Verzeaux, Nicolas Belloy, Jessica Thevenard-Devy, Jérôme Devy, Géraldine Ferracci, Laurent Martiny, Stéphane Dedieu, Manuel Dauchez, Hervé Emonard, Nicolas Etique, Emmanuelle Devarenne-Charpentier
The tissue inhibitor of metalloproteinases-1 (TIMP-1) exerts inhibitory activity against matrix metalloproteinases and cytokine-like effects. We previously showed that TIMP-1 reduces neurite outgrowth in mouse cortical neurons and that this cytokine-like effect depends on TIMP-1 endocytosis mediated by the low-density lipoprotein receptor-related protein-1 (LRP-1). To gain insight into the interaction between TIMP-1 and LRP-1, we considered conformational changes that occur when a ligand binds to its receptor...
July 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28699828/glioma-targeted-delivery-strategy-of-doxorubicin-loaded-liposomes-by-dual-ligand-modification
#12
Wei Han, Guangfu Yin, Ximing Pu, Xianchun Chen, Xiaoming Liao, Zhongbing Huang
The blood-brain barrier (BBB) is the protective parclose of brain safety, but it is also the main obstacle of the drug delivery to cerebral parenchyma, which hamper therapy for brain diseases. In this work, a glioma targeted drug delivery system was developed through loading doxorubicin into Angiopep-2 and TAT peptide dual-modified liposomes (DOX-TAT-Ang-LIP). Low-density lipoprotein receptor-related protein-1 (LRP1) was one receptor overexpressed on both BBB and glioma cytomembranes. Angiopep-2, a specific ligand of LRP1, exhibited high LRP1 binding efficiency...
July 12, 2017: Journal of Biomaterials Science. Polymer Edition
https://www.readbyqxmd.com/read/28694075/double-seropositive-myasthenia-gravis-with-acetylcholine-receptor-and-low-density-lipoprotein-receptor-related-protein-4-antibodies-associated-with-invasive-thymoma
#13
Hidehiro Ishikawa, Akira Taniguchi, Yuichiro Ii, Osamu Higuchi, Hidenori Matsuo, Shunya Nakane, Masaru Asahi, Atsushi Niwa, Hidekazu Tomimoto
We describe two cases of myasthenia gravis (MG) with double seropositivity for acetylcholine receptor (AChR) and low-density lipoprotein receptor-related protein 4 (LRP4) antibodies (AChR/LRP4-MG) with invasive thymoma. Both cases showed myasthenic weakness, which was restricted to the ocular muscles for >5 months from onset, and then unprovoked severe clinical deterioration supervened with predominant bulbar symptoms. The patients responded adequately to therapeutic intervention. Serum AChR antibody levels at post-intervention were markedly decreased, whereas LRP4 antibodies were almost unchanged in case 1 and slightly decreased in case 2...
June 3, 2017: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/28669880/role-of-vitamin-d-in-amyloid-clearance-via-lrp-1-upregulation-in-alzheimer-s-disease-a-potential-therapeutic-target
#14
REVIEW
Parmi Patel, Jigna Shah
Amyloid beta (Aβ) deposition is considered to be one of the primary reason to trigger Alzheimer's disease (AD). Literature clearly suggests decline in Aβ clearance to be accountable for progression of late onset AD as compared to augmented Aβ production. There may be several pathways for Aβ clearance out of which one of the major pathway is the vascular-mediated removal of Aβ from the brain across the blood-brain barrier (BBB) via efflux pumps or receptors. Among Aβ scavenger receptors, low density lipoprotein receptor related protein (LRP-1) has been most extensively studied...
June 30, 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/28662213/verification-and-characterization-of-an-alternative-low-density-lipoprotein-receptor-related-protein-1-splice-variant
#15
Marlen Kolb, Susanne Kurz, Angelika Schäfer, Klaus Huse, Andreas Dietz, Gunnar Wichmann, Gerd Birkenmeier
BACKGROUND: Low density lipoprotein (LDL) receptor-related protein 1 (LRP1) is a ubiquitously expressed multi-ligand endocytosis receptor implicated in a wide range of signalling, among others in tumour biology. Tumour-associated genomic mutations of the LRP1 gene are described, but nothing is known about cancer-associated expression of LRP1 splice variants Therefore, the focus of this study was on an annotated truncated LRP1 splice variant (BC072015.1; NCBI GenBank), referred to as smLRP1, which was initially identified in prostate and lung carcinoma...
2017: PloS One
https://www.readbyqxmd.com/read/28659595/cellular-uptake-of-prommp-2-timp-2-complexes-by-the-endocytic-receptor-megalin-lrp-2
#16
Manuel Johanns, Pascale Lemoine, Virginie Janssens, Giuseppina Grieco, Soren K Moestrup, Rikke Nielsen, Erik I Christensen, Pierre J Courtoy, Hervé Emonard, Etienne Marbaix, Patrick Henriet
Matrix metalloproteinases (MMPs) are regulated at multiple transcriptional and post-transcriptional levels, among which receptor-mediated endocytic clearance. We previously showed that low-density lipoprotein receptor-related protein-1 (LRP-1) mediates the clearance of a complex between the zymogen form of MMP-2 (proMMP-2) and tissue inhibitor of metalloproteinases, TIMP-2, in HT1080 human fibrosarcoma cells. Here we show that, in BN16 rat yolk sac cells, proMMP-2:TIMP-2 complex is endocytosed through a distinct LRP member, megalin/LRP-2...
June 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28623937/the-association-of-lipid-metabolism-relative-gene-polymorphisms-and-ischemic-stroke-in-han-and-uighur-population-of-xinjiang
#17
Yun-Hua Yue, Ling-Yun Liu, Liang Hu, You-Mei Li, Jie-Ping Mao, Xiao-Ying Yang, Na-Mu Dila
BACKGROUND: The present study is aimed to evaluate difference of lipid metabolism related gene single nucleotide polymorphisms (SNPs) with ischemic stroke (IS) in Han and Uighur population of Xinjiang, China. METHODS: Four hundred eight patients with ischemic stroke and 347 unrelated healthy individuals of age and sex matched were genotyped for Apolipoprotein A5 (ApoA5), lipoprotein lipase (LPL), Cholesteryl ester transfer protein (CETP) and low-density lipoprotein receptor (LDL-R) genes...
June 17, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28621732/lipid-accumulation-in-hepg2-cells-is-attenuated-by-strawberry-extract-through-ampk-activation
#18
Tamara Y Forbes-Hernández, Francesca Giampieri, Massimiliano Gasparrini, Sadia Afrin, Luca Mazzoni, Mario D Cordero, Bruno Mezzetti, José L Quiles, Maurizio Battino
Regulation of lipid metabolism is essential for treatment and prevention of several chronic diseases such as obesity, diabetes, and cardiovascular diseases, which are responsible for most deaths worldwide. It has been demonstrated that the AMP-activated protein kinase (AMPK) has a direct impact on lipid metabolism by modulating several downstream-signaling components. The main objective of the present work was to evaluate the in vitro effect of a methanolic strawberry extract on AMPK and its possible repercussion on lipid metabolism in human hepatocellular carcinoma cells (HepG2)...
June 16, 2017: Nutrients
https://www.readbyqxmd.com/read/28612181/low-density-lipoprotein-receptor-related-protein-1-lrp1-c4408r-mutant-promotes-amyloid-precursor-protein-app-%C3%AE-cleavage-in-vitro
#19
Huayan Hou, Ahsan Habib, Dan Zi, Kathy Tian, Jun Tian, Brian Giunta, Darrell Sawmiller, Jun Tan
Previous studies have demonstrated that the low-density lipoprotein receptor-related protein-1 (LRP1) plays conflicting roles in Alzheimer's disease (AD) pathogenesis, clearing β-amyloid (Aβ) from the brain while also enhancing APP endocytosis and resultant amyloidogenic processing. We have recently discovered that co-expression of mutant LRP1 C-terminal domain (LRP1-CT C4408R) with Swedish mutant amyloid precursor protein (APPswe) in Chinese hamster ovary (CHO) cells decreases Aβ production, while also increasing sAPPα and APP α-C-terminal fragment (α-CTF), compared with CHO cells expressing APPswe alone...
June 13, 2017: Neuromolecular Medicine
https://www.readbyqxmd.com/read/28596374/lrp1-dependent-bmper-signaling-regulates-lipopolysaccharide-induced-vascular-inflammation
#20
Pamela Lockyer, Hua Mao, Qiying Fan, Luge Li, Li-Yuan Yu-Lee, N Tony Eissa, Cam Patterson, Liang Xie, Xinchun Pi
OBJECTIVE: Bacterial endotoxin (lipopolysaccharide)-mediated sepsis involves dysregulated systemic inflammation, which injures the lung and other organs, often fatally. Vascular endothelial cells act as both targets and mediators of lipopolysaccharide-induced inflammatory responses. Dysfunction of endothelium results in increases of proinflammatory cytokine production and permeability leakage. BMPER (bone morphogenetic protein-binding endothelial regulator), an extracellular modulator of bone morphogenetic protein signaling, has been identified as a vital component in chronic endothelial inflammatory responses and atherosclerosis...
August 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
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