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https://www.readbyqxmd.com/read/28805931/mrp1-protein-expression-in-leukemic-stem-cells-as-a-negative-prognostic-marker-in-acute-myeloid-leukemia-patients
#1
Maria Paprocka, Aleksandra Bielawska-Pohl, Joanna Rossowska, Agnieszka Krawczenko, Danuta Duś, Marek Kiełbiński, Olga Haus, Maria Podolak-Dawidziak, Kazimierz Kuliczkowski
BACKGROUND: It is well established that expression of multi-drug resistance (MDR) proteins (MDR1, BCRP, MDR3, MRP1 and LRP) in leukemic blasts correlates with AML patients clinical response. Assuming that leukemic stem cells (LSC) are resistant to chemotherapy and responsible for relapse it might be clinically relevant to evaluate the expression level of MDR proteins in LSC and relate it to the clinical outcome. METHODS: Bone marrow samples from 26 patients with de novo AML were labeled with antibodies to distinguish CD34+CD38-CD123+ LSC population and with antibodies against MDR1, BCRP, MDR3, MRP1 or LRP proteins...
August 14, 2017: European Journal of Haematology
https://www.readbyqxmd.com/read/28800764/lrp-a-global-regulator-regulates-the-virulence-of-vibrio-vulnificus
#2
Yu-Chi Ho, Feng-Ru Hung, Chao-Hui Weng, Wei-Ting Li, Tzu-Hung Chuang, Tsung-Lin Liu, Ching-Yuan Lin, Chien-Jung Lo, Chun-Liang Chen, Jen-Wei Chen, Masayuki Hashimoto, Lien-I Hor
BACKGROUND: An attenuated mutant (designated NY303) of Vibrio vulnificus, which causes serious wound infection and septicemia in humans, was isolated fortuitously from a clinical strain YJ016. This mutant was defective in cytotoxicity, migration on soft agar and virulence in the mouse. The purpose of this study was to map the mutation in this attenuated mutant and further explore how the gene thus identified is involved in virulence. METHODS: The whole genome sequence of mutant NY303 determined by next-generation sequencing was compared with that of strain YJ016 to map the mutations...
August 11, 2017: Journal of Biomedical Science
https://www.readbyqxmd.com/read/28800619/-what-is-relevant-in-a-text-document-an-interpretable-machine-learning-approach
#3
Leila Arras, Franziska Horn, Grégoire Montavon, Klaus-Robert Müller, Wojciech Samek
Text documents can be described by a number of abstract concepts such as semantic category, writing style, or sentiment. Machine learning (ML) models have been trained to automatically map documents to these abstract concepts, allowing to annotate very large text collections, more than could be processed by a human in a lifetime. Besides predicting the text's category very accurately, it is also highly desirable to understand how and why the categorization process takes place. In this paper, we demonstrate that such understanding can be achieved by tracing the classification decision back to individual words using layer-wise relevance propagation (LRP), a recently developed technique for explaining predictions of complex non-linear classifiers...
2017: PloS One
https://www.readbyqxmd.com/read/28782037/chemotactic-synthetic-vesicles-design-and-applications-in-blood-brain-barrier-crossing
#4
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/28753822/five-year-outcomes-for-a-prospective-randomised-controlled-trial-comparing-laparoscopic-and-robot-assisted-radical-prostatectomy
#5
Francesco Porpiglia, Cristian Fiori, Riccardo Bertolo, Matteo Manfredi, Fabrizio Mele, Enrico Checcucci, Stefano De Luca, Roberto Passera, Roberto Mario Scarpa
BACKGROUND: The literature is lacking randomised controlled trials comparing robot-assisted (RARP) and laparoscopic (LRP) radical prostatectomy, especially for follow-up >1 yr. OBJECTIVE: To report 5-yr outcomes for our previously published prospective randomised study comparing RARP and LRP. DESIGN, SETTING, AND PARTICIPANTS: From January 2010 to January 2011, 120 patients with organ-confined prostate cancer were enrolled and randomly assigned to RARP or LRP...
November 23, 2016: European Urology Focus
https://www.readbyqxmd.com/read/28751898/comparative-analysis-of-chloroplast-psbd-promoters-in-terrestrial-plants
#6
Shuichi Shimmura, Mikio Nozoe, Shota Kitora, Satoko Kin, Shigeru Matsutani, Yoko Ishizaki, Yoichi Nakahira, Takashi Shiina
The transcription of photosynthesis genes encoded by the plastid genome is mainly mediated by a prokaryotic-type RNA polymerase called plastid-encoded plastid RNA polymerase (PEP). Standard PEP-dependent promoters resemble bacterial sigma-70-type promoters containing the so-called -10 and -35 elements. On the other hand, an unusual light- and stress-responsive promoter (psbD LRP) that is regulated by a 19-bp AAG-box immediately upstream of the -35 element has been mapped upstream of the psbD-psbC operon in some angiosperms...
2017: Frontiers in Plant Science
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/28745792/correlation-between-expression-of-lrp16-ki67-and-egfr-and-breast-cancer-clinical-pathologic-factors-and-prognosis
#8
D-J Yao, S Qiao, Y Zhang, Y-T Zhao, C-H Yuan
OBJECTIVE: To investigate the expression of leukemia-related protein 16 (LRP16), proliferating cell nuclear antigen K-67 (Ki67) and epidermal growth factor receptor-1 (EGFR-1) in breast cancer tissue and to explore the correlation between the expression of those proteins and breast cancer clinical pathologic factors and prognosis. PATIENTS AND METHODS: The expressions of LRP16, Ki67 and EGFR in breast cancer tissues of 86 cases were detected by the immunohistochemical method and the correlations between the expression of LRP16, Ki67 and EGFR and clinical pathologic factors and prognosis were investigated...
July 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28743230/cart-modulates-beta-amyloid-metabolism-associated-enzymes-and-attenuates-memory-deficits-in-app-ps1-mice
#9
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/28743211/social-context-modulates-cognitive-markers-in-obsessive-compulsive-disorder
#10
Hernando Santamaría-García, Carles Soriano-Mas, Miguel Burgaleta, Alba Ayneto, Pino Alonso, José M Menchón, Narcis Cardoner, Nuria Sebastián-Gallés
BACKGROUND: Error monitoring, cognitive control and motor inhibition control are proposed as cognitive alterations disrupted in obsessive-compulsive disorder (OCD). OCD has also been associated with an increased sensitivity to social evaluations. The effect of a social simulation over electrophysiological indices of cognitive alterations in OCD was examined. METHODS: A case-control cross-sectional study measuring event-related potentials (ERP) for error monitoring (Error-Related Negativity), cognitive control (N2) and motor control (LRP) was conducted...
July 26, 2017: Social Neuroscience
https://www.readbyqxmd.com/read/28741124/characterization-of-a-low-density-lipoprotein-receptor-lrp13-in-chinese-tongue-sole-cynoglossus-semilaevis-and-medaka-oryzias-latipes
#11
Na Wang, Ruoqing Wang, Qiaomu Hu, Wenteng Xu, Ying Zhu, Fang Yan, Songlin Chen
As an important economic marine species cultured in China, Chinese tongue sole (Cynoglossus semilaevis) has interested us due to its sexual dimorphism and ZW/ZZ sex determination system. In a previous study, dmrt1 was identified as a dosage-dependent male-determining gene. In the present study, a female-specific expressed gene, cse0440, initially annotated as lrp1b-like, was identified from chromosome W of C. semilaevis. In view of the differences between cse0440 and lrp1b in terms of expression pattern, a phylogenetic analysis containing 85 LRP proteins was constructed and provided an evidence to re-annotate cse0440 as cseLRP13...
July 24, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28723729/wnt-signaling-in-cardiovascular-disease-opportunities-and-challenges
#12
Austin Gay, Dwight A Towler
PURPOSE OF REVIEW: Cardiometabolic diseases increasingly afflict our aging, dysmetabolic population. Complex signals regulating low-density lipoprotein receptor-related protein (LRP) and frizzled protein family members - the plasma membrane receptors for the cadre of Wnt polypeptide morphogens - contribute to the control of cardiovascular homeostasis. RECENT FINDINGS: Both canonical (β-catenin-dependent) and noncanonical (β-catenin-independent) Wnt signaling programs control vascular smooth muscle (VSM) cell phenotypic modulation in cardiometabolic disease...
July 18, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28722668/coupling-to-a-cancer-selective-heparan-sulfate-targeted-branched-peptide-can-by-pass-breast-cancer-cell-resistance-to-methotrexate
#13
Lorenzo Depau, Jlenia Brunetti, Chiara Falciani, Silvia Scali, Giulia Riolo, Elisabetta Mandarini, Alessandro Pini, Luisa Bracci
Cancer-selective tetra-branched peptides, named NT4, can be coupled to different functional units for cancer cell imaging or therapy. NT4 peptides specifically bind to lipoprotein receptor-related proteins (LRP) receptors and to heparan sulfate chains on membrane proteoglycans and can be efficiently internalized by cancer cells expressing these membrane targets. Since binding and internalization of NT4 peptides is mediated by specific NT4 receptors on cancer cell membranes and this may allow drug resistance produced by drug membrane transporters to be by-passed, we tested the ability of drug-armed NT4 to by-pass drug resistance in cancer cell lines...
July 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28714885/differences-in-genetic-background-contribute-to-pseudomonas-exotoxin-a-induced-hepatotoxicity-in-rats
#14
Chien-Chao Chiu, Yu-Chih Wang, Wen-Ching Huang, Yi-Hsun Chen, Shao-Wen Hung, Yen-Te Huang, Hsiao-Li Chuang, Yi-Chih Chang
Pseudomonas aeruginosa exotoxin A (PEA) causes severe hepatotoxicity in experimental animals and is useful in investigations of immune-mediated liver injury. However, strain differences in the sensitivity to PEA-induced hepatotoxicity in rats remains be elucidated. In this study, we determined the severity of PEA-induced hepatotoxicity in six genetically different rat strains. Male LE (Long Evans), Wistar, F344, WKY, BN/SsN and LEW rats were administered a single intravenous injection of PEA (20 μg/kg). Significantly elevated serum ALT and AST levels, massive necrosis and hemorrhage, and numerous TUNEL-positive hepatocytes were observed in BN/SsN rats...
July 15, 2017: Toxins
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
#15
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/28702835/early-response-activation-in-repetition-priming-an-lrp-study
#16
Christian Valt, Birgit Stürmer, Werner Sommer, Stephan Boehm
According to recent interpretations of repetition priming, response codes are automatically bound to a stimulus and retrieved during successive presentations of the stimulus, hence, affecting its current processing. Despite a solid corpus of behavioural evidence in line with this interpretation, electrophysiological studies have reported contrasting results regarding the nature and the timing of response code retrieval. The present experiment aims to establish at which stage of information processing decision and action codes are retrieved in repetition priming...
July 12, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
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
#17
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/28665458/a-robotic-needle-driver-to-facilitate-vescico-urethral-anastomosis-during-laparoscopic-radical-prostatectomy
#18
Virginia Varca, Andrea Benelli, Francesco Pietrantuono, Nazareno Suardi, Andrea Gregori, Franco Gaboardi
PURPOSE: The completion of the vescico-urethral anastomosis (VUA) represents the most critical step of laparoscopic radical prostatectomy (LRP), and it can often discourage the use of minimally invasive surgery in less experienced laparoscopic surgeons. The aim of this paper is to evaluate the usefulness of a new robotic needle driver named Dextérité in performing the VUA after LRP. MATERIALS AND METHODS: This prospective randomized clinical study enrolled 40 consecutive patients eligible for LRP, which were randomized into four groups: group A, patients undergoing LRP done by an expert surgeon; group B, patients undergoing robotic-assisted radical prostatectomy (RARP) performed by the same expert surgeon; group C, patients undergoing LRP performed by a young surgeon at the beginning of the learning curve; group D, patients undergoing LRP performed by another young surgeon at the beginning of the learning curve with the aid of Dextérité needle driver for completion of the VUA...
June 19, 2017: Urologia
https://www.readbyqxmd.com/read/28663937/luxs-dependent-ai-2-production-is-not-involved-in-global-regulation-of-natural-product-biosynthesis-in-photorhabdus-and-xenorhabdus
#19
Antje K Heinrich, Merle Hirschmann, Nick Neubacher, Helge B Bode
The Gram-negative bacteria Photorhabdus and Xenorhabdus are known to produce a variety of different natural products (NP). These compounds play different roles since the bacteria live in symbiosis with nematodes and are pathogenic to insect larvae in the soil. Thus, a fine tuned regulatory system controlling NP biosynthesis is indispensable. Global regulators such as Hfq, Lrp, LeuO and HexA have been shown to influence NP production of Photorhabdus and Xenorhabdus. Additionally, photopyrones as quorum sensing (QS) signals were demonstrated to be involved in the regulation of NP production in Photorhabdus...
2017: PeerJ
https://www.readbyqxmd.com/read/28661264/efficacy-of-solifenacin-in-the-prevention-of-short-term-complications-after-laparoscopic-radical-prostatectomy
#20
Ranxing Yang, Lijie Liu, Gaofeng Li, Jianjun Yu
Objective To evaluate the efficacy of solifenacin in the prevention of short-term complications after laparoscopic radical prostatectomy (LRP). Methods This randomized placebo-controlled study enrolled patients with histologically proven prostate cancer who underwent LRP. The patients were randomized to receive either solifenacin (5 mg once daily; study group) or placebo (control group) for the 15-day period beginning on the first day after surgery. The mean duration of detrusor overactivity (DO), the frequency of DO, the duration of macroscopic haematuria, and the days before catheter removal were recorded...
January 1, 2017: Journal of International Medical Research
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