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https://www.readbyqxmd.com/read/29142073/gga1-regulates-signal-dependent-sorting-of-bace1-to-recycling-endosomes-which-moderates-a%C3%AE-production
#1
Wei Hong Toh, Pei Zhi Cheryl Chia, Mohammed Iqbal Hossain, Paul A Gleeson
The diversion of the membrane-bound β-secretase BACE1 from the endo-lysosomal pathway to recycling endosomes represents an important transport step in the regulation of amyloid beta (Aβ) production. However, the mechanisms that regulate endosome sorting of BACE1 are poorly understood. Here we assessed the transport of BACE1 from early to recycling endosomes and have identified essential roles for the SNX4-mediated, signal independent pathway and for a novel signal-mediated pathway. The signal-mediated pathway is regulated by the phosphorylation of the acidic cluster-dileucine DISLL cytoplasmic tail motif of BACE1...
November 15, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/29124004/papillary-cystadenocarcinoma-of-the-sublingual-gland
#2
Neil Giblett, Syed Farhan Ahsan, Ahmed Messahel
A 68-year-old Caucasian gentleman presented with a 6-month history of a left sided Level I/II neck swelling involving the floor of mouth. MRI revealed a large cystic lesion and histology confirmed a diagnosis of primary papillary cystadenocarcinoma of the sublingual gland. Papillary cystadenocarcinoma was first described in 1991 by the World Health Organisation [WHO], and is a rare malignant neoplasm characterised by cysts and papillary endo-cystic projections. Papillary cystadenocarcinoma arising from the sublingual glands is extremely rare and has the potential to metastasise to cervical lymph nodes...
September 2017: Journal of Oral Biology and Craniofacial Research
https://www.readbyqxmd.com/read/29107134/restoration-of-severely-damaged-endodontically-treated-premolars-the-influence-of-the-endo-core-length-on-marginal-integrity-and-fatigue-resistance-of-lithium-disilicate-cad-cam-ceramic-endocrowns
#3
G T Rocca, R Daher, C M Saratti, R Sedlacek, T Suchy, A J Feilzer, I Krejci
OBJECTIVES: to explore fatigue limits of ceramic endocrowns for premolars. METHODS: Forty-eight devitalized premolars were cut at the CEJ. They were restored with standardized CAD-CAM lithium disilicate reinforced ceramic restorations (IPS e.max CAD, Ivoclar-Vivadent) and divided into four Groups (n=12): overlays (Group A, no endo-core, negative control), endocrowns with an endo-core of 2mm (Group B), 4mm (GroupC) and crowns with post and core (Group D, positive control)...
October 26, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/29079721/diverse-peptide-hormones-affecting-root-growth-identified-in-the-medicago-truncatula-secreted-peptidome
#4
Neha Patel, Nadiatul A Mohd-Radzman, Leo Corcilius, Ben Crossett, Angela Connolly, Stuart J Cordwell, Ariel Ivanovici, Katia Taylor, James Wlilliams, Steve Binos, Michael Mariani, Richard J Payne, Michael A Djordjevic
Multigene families encoding diverse secreted peptide hormones play important roles in plant development. A need exists to efficiently elucidate the structures and post-translational modifications of these difficult-to-isolate peptide hormones in planta so that their biological functions can be determined. A mass spectrometry and bioinformatics approach was developed to comprehensively analyse the secreted peptidome of Medicago hairy root cultures and xylem sap. We identified 759 spectra corresponding to the secreted products of twelve peptide hormones including four CEP (C-TERMINALLY ENCODED PEPTIDE), two CLE (CLV3/ENDOSPERM SURROUNDING REGION RELATED) and six XAP (XYLEM SAP ASSOCIATED PEPTIDE) peptides...
October 27, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/29031141/analysis-of-spastic-gait-in-cervical-myelopathy-linking-compression-ratio-to-spatiotemporal-and-pedobarographic-parameters
#5
Taro Nagai, Yasuhito Takahashi, Kenji Endo, Ryo Ikegami, Ryuichi Ueno, Kengo Yamamoto
BACKGROUND: Gait dysfunction associated with spasticity and hyperreflexia is a primary symptom in patients with compression of cervical spinal cord. The objective of this study was to link maximum compression ratio (CR) to spatiotemporal/pedobarographic parameters. METHODS: Quantitative gait analysis was performed by using a pedobarograph in 75 elderly males with a wide range of cervical compression severity. CR values were characterized on T1-weighted magnetic resonance imaging (MRI)...
October 10, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28990874/intensive-gait-treatment-using-a-robot-suit-hybrid-assistive-limb-in-acute-spinal-cord-infarction-report-of-two-cases
#6
Hiroki Watanabe, Aiki Marushima, Hiroaki Kawamoto, Hideki Kadone, Tomoyuki Ueno, Yukiyo Shimizu, Ayumu Endo, Yasushi Hada, Kousaku Saotome, Tetsuya Abe, Masashi Yamazaki, Yoshiyuki Sankai, Eiichi Ishikawa, Akira Matsumura
CONTEXT: Spinal cord infarction (SCI) causes gait disturbance because of paresis, spasticity, and sensory disturbance of the lower limbs. There is no effective medical treatment for SCI, and conventional rehabilitation alone is the main approach to helping individuals work toward independent walking. The aim of this study was to evaluate the effect of gait treatment using the Hybrid Assistive Limb (HAL) on acute SCI. FINDINGS: A 61-year-old female and a 62-year-old male with incomplete paraplegia participated in this study...
October 9, 2017: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/28976196/mitochondria-alkylation-and-cellular-trafficking-mapped-with-a-lipophilic-bodipy-acrolein-fluorogenic-probe
#7
Richard Lincoln, Lana E Greene, Wenzhou Zhang, Sheena Louisia, Gonzalo Cosa
Protein and DNA alkylation by endogenously produced electrophiles is associated with the pathogenesis of neurodegenerative diseases, to epigenetic alterations and to cell signaling and redox regulation. With the goal of visualizing, in real-time, the spatiotemporal response of the cell milieu to electrophiles, we have designed a fluorogenic BODIPY-acrolein probe, AcroB, that undergoes a >350-fold fluorescence intensity enhancement concomitant with protein adduct formation. AcroB enables a direct quantification of single post-translational modifications occurring on cellular proteins via recording fluorescence bursts in live-cell imaging studies...
October 13, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28951542/priming-of-lineage-specifying-genes-by-bcl11b-is-required-for-lineage-choice-in-post-selection-thymocytes
#8
Satoshi Kojo, Hirokazu Tanaka, Takaho A Endo, Sawako Muroi, Ye Liu, Wooseok Seo, Mari Tenno, Kiyokazu Kakugawa, Yoshinori Naoe, Krutula Nair, Kazuyo Moro, Yoshinori Katsuragi, Akinori Kanai, Toshiya Inaba, Takeshi Egawa, Byrappa Venkatesh, Aki Minoda, Ryo Kominami, Ichiro Taniuchi
T-lineage committed precursor thymocytes are screened by a fate-determination process mediated via T cell receptor (TCR) signals for differentiation into distinct lineages. However, it remains unclear whether any antecedent event is required to couple TCR signals with the transcriptional program governing lineage decisions. Here we show that Bcl11b, known as a T-lineage commitment factor, is essential for proper expression of ThPOK and Runx3, central regulators for the CD4-helper/CD8-cytotoxic lineage choice...
September 26, 2017: Nature Communications
https://www.readbyqxmd.com/read/28940721/a-comparative-in-vitro-study-of-different-techniques-for-removal-of-fibre-posts-from-root-canals
#9
Franziska Haupt, Jana Pfitzner, Michael Hülsmann
This study evaluates the effectiveness of different techniques to remove fibre posts from root filled teeth in vitro. One hundred and fifty-three extracted single-rooted teeth were decoronated, root-canal treated and divided into three groups (n = 51). Post spaces were prepared for different types of fibre posts: glass fibre, quartz fibre, carbon fibre. Each group was divided into three subgroups with regard to the post removal technique (n = 17): SonicFlex Endo, long-shaft round bur, DT-Post removal kit. Residual material, loss of dentine, working time and procedural errors were assessed using computed tomography...
September 20, 2017: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/28935589/early-postnatal-exposure-to-endosulfan-interferes-with-the-normal-development-of-the-male-rat-mammary-gland
#10
Gabriela A Altamirano, Melisa B Delconte, Ayelen L Gomez, Ramiro Alarcón, Verónica L Bosquiazzo, Enrique H Luque, Mónica Muñoz-de-Toro, Laura Kass
Our aim was to evaluate whether postnatal exposure to endosulfan (ENDO) modifies mammary gland (MG) development in pre- and post-pubertal male rats. From postnatal day 1 (PND1) to PND7, male rats were injected subcutaneously every 48h with either corn oil (vehicle) or 600μg ENDO/kg.bw. On PND21 and PND60, MG and blood samples were collected. Estradiol (E2) and testosterone (T) serum levels, MG histology, collagen fiber organization, proliferation index, and estrogen (ESR1) and androgen receptor (AR) expressions were evaluated...
November 5, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28904199/calcitonin-gene-related-peptide-induces-hiv-1-proteasomal-degradation-in-mucosal-langerhans-cells
#11
Morgane Bomsel, Yonatan Ganor
The neuroimmune dialogue between peripheral neurons and Langerhans cells (LCs) within mucosal epithelia protects against incoming pathogens. LCs rapidly internalize human immunodeficiency virus type 1 (HIV-1) upon its sexual transmission and then trans-infect CD4(+) T cells. We recently found that the neuropeptide calcitonin gene-related peptide (CGRP), secreted mucosally from peripheral neurons, inhibits LC-mediated HIV-1 trans-infection. In this study, we investigated the mechanism of CGRP-induced inhibition, focusing on HIV-1 degradation in LCs and its interplay with trans-infection...
December 1, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28890400/deglycosylating-enzymes-acting-on-n-glycans-in-fungi-insights-from-a-genome-survey
#12
REVIEW
Georgios Tzelepis, Magnus Karlsson, Tadashi Suzuki
BACKGROUND: N-Glycosylation, one of the most prominent post-translational modifications of proteins, is found in all domains of life, i.e. eukaryotes, bacteria and archaea, and has been shown to play a crucial role in modulating the physicochemical/physiological properties of carrier proteins. Deglycosylating enzymes that act on N-glycans are widely used in analyzing the structures/functions of N-glycans. Fungi are known to produce various deglycosylating enzymes, some of which are fungi-specific...
November 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28874462/%C3%AE-arrestin2-improves-post-myocardial-infarction-heart-failure-via-sarco-endo-plasmic-reticulum-ca-2-atpase-dependent-positive-inotropy-in-cardiomyocytes
#13
Katie A McCrink, Jennifer Maning, Angela Vu, Malika Jafferjee, Christine Marrero, Ava Brill, Ashley Bathgate-Siryk, Samalia Dabul, Walter J Koch, Anastasios Lymperopoulos
Heart failure is the leading cause of death in the Western world, and new and innovative treatments are needed. The GPCR (G protein-coupled receptor) adapter proteins βarr (β-arrestin)-1 and βarr-2 are functionally distinct in the heart. βarr1 is cardiotoxic, decreasing contractility by opposing β1AR (adrenergic receptor) signaling and promoting apoptosis/inflammation post-myocardial infarction (MI). Conversely, βarr2 inhibits apoptosis/inflammation post-MI but its effects on cardiac function are not well understood...
November 2017: Hypertension
https://www.readbyqxmd.com/read/28874149/comparison-of-computed-tomography-and-high-field-3-0%C3%A2-t-magnetic-resonance-imaging-of-age-related-variances-in-selected-equine-maxillary-cheek-teeth-and-adjacent-tissues
#14
Christin Schoppe, Maren Hellige, Karl Rohn, Bernhard Ohnesorge, Astrid Bienert-Zeit
BACKGROUND: Modern imaging techniques such as computed tomography (CT) and magnetic resonance imaging (MRI) have the advantage of producing images without superimposition. Whilst CT is a well-established technique for dental diagnostics, MRI examinations are rarely used for the evaluation of dental diseases in horses. Regarding equine endodontic therapies which are increasingly implemented, MRI could help to portray changes of the periodontal ligament and display gross pulpar anatomy...
September 6, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28861818/analysis-of-golgi-mediated-protein-traffic-in-plant-cells
#15
Wenjin Shen, Zhidan Xiao, Jinbo Shen, Caiji Gao
In plant secretory pathways, the Golgi apparatus serves as the major sorting hub to receive de novo synthesized protein from the endoplasmic reticulum for further sorting to post-Golgi compartments or for residence in the cisternae of Golgi stacks. Meanwhile, Golgi functions as a pivotal biochemical factory to make modifications of N-glycans and to produce mature glycoproteins. Fluorescent tag-based confocal microscopy in combination with the brefeldin A drug or the genetic tools to disturb Golgi function have been shown as powerful approaches to analyze Golgi-mediated protein traffic in transiently expressed plant protoplasts or in stably expressed transgenic plants...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28855752/preservation-of-root-canal-anatomy-using-self-adjusting-file-instrumentation-with-glide-path-prepared-by-20-0-02-hand-files-versus-20-0-04-rotary-files
#16
Niharika Jain, Ajinkya M Pawar, Piyush D Ukey, Prashant K Jain, Bhagyashree Thakur, Abhishek Gupta
OBJECTIVES: To compare the relative axis modification and canal concentricity after glide path preparation with 20/0.02 hand K-file (NITIFLEX(®)) and 20/0.04 rotary file (HyFlex™ CM) with subsequent instrumentation with 1.5 mm self-adjusting file (SAF). MATERIALS AND METHODS: One hundred and twenty ISO 15, 0.02 taper, Endo Training Blocks (Dentsply Maillefer, Ballaigues, Switzerland) were acquired and randomly divided into following two groups (n = 60): group 1, establishing glide path till 20/0...
March 2017: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/28827815/in-vivo-production-of-non-glycosylated-recombinant-proteins-in-nicotiana-benthamiana-plants-by-co-expression-with-endo-%C3%AE-n-acetylglucosaminidase-h-endo-h-of-streptomyces-plicatus
#17
Tarlan Mamedov, Kader Cicek, Burcu Gulec, Rifat Ungor, Gulnara Hasanova
A plant transient expression system, with eukaryotic post-translational modification machinery, offers superior efficiency, scalability, safety, and lower cost over other expression systems. However, due to aberrant N-glycosylation, this expression system may not be a suitable expression platform for proteins not carrying N-linked glycans in the native hosts. Therefore, it is crucial to develop a strategy to produce target proteins in a non-glycosylated form while preserving their native sequence, conformation and biological activity...
2017: PloS One
https://www.readbyqxmd.com/read/28827099/4d-cardiac-imaging-at-clinical-3-0t-provides-accurate-assessment-of-murine-myocardial-function-and-viability
#18
Lindsey A Crowe, Fabrizio Montecucco, Federico Carbone, Iris Friedli, Anne-Lise Hachulla, Vincent Braunersreuther, François Mach, Jean-Paul Vallée
OBJECTIVES: We validate a 4D strategy tailored for 3T clinical systems to simultaneously quantify function and infarct size in wild type mice after ischemia/reperfusion, with improved spatial and temporal resolution by comparison to previous published protocols using clinical field MRI systems. METHODS: C57BL/6J mice underwent 60min ischemia/reperfusion (n=14) or were controls without surgery (n=6). Twenty-four hours after surgery mice were imaged with gadolinium injection and sacrificed for post-mortem MRI and histology with serum also taken for Troponin I levels...
December 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28819902/ablation-therapy-for-barrett-s-esophagus-new-rules-for-changing-times
#19
REVIEW
Nour Hamade, Prateek Sharma
PURPOSE OF REVIEW: In this review, we discuss different endoscopic techniques in the eradication of Barrett's esophagus (BE) as well as some controversies in the field of treatment. RECENT FINDINGS: Patients with T1a esophageal adenocarcinoma and BE of high-grade dysplasia should undergo endoscopic ablative therapy. The most studied technique to date is radiofrequency ablation. It can be combined with endoscopic mucosal resection in cases containing nodular and flat lesions...
August 17, 2017: Current Gastroenterology Reports
https://www.readbyqxmd.com/read/28815184/evaluation-of-risk-factors-for-vertebral-compression-fracture-after-carbon-ion-radiotherapy-for-primary-spinal-and-paraspinal-sarcoma
#20
Yoshihiro Matsumoto, Makoto Shinoto, Makoto Endo, Nokitaka Setsu, Keiichiro Iida, Jun-Ichi Fukushi, Kenichi Kawaguchi, Seiji Okada, Hirofumi Bekki, Reiko Imai, Tadashi Kamada, Yoshiyuki Shioyama, Yasuharu Nakashima
BACKGROUND AND PURPOSE: Carbon-ion radiotherapy (C-ion RT) was effective therapy for inoperable spinal and paraspinal sarcomas. However, a significant adverse event following radiotherapies is vertebral compression fractures (VCFs). In this study, we investigated the incidence of and risk factors for post-C-ion RT VCFs in patients with spinal or paraspinal sarcomas. MATERIAL AND METHODS: Thirty consecutive patients with spinal or paraspinal sarcomas treated with C-ion RT were retrospectively reviewed...
2017: BioMed Research International
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