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https://www.readbyqxmd.com/read/28092360/chemical-proteomics-reveals-adp-ribosylation-of-small-gtpases-during-oxidative-stress
#1
Nathan P Westcott, Joseph P Fernandez, Henrik Molina, Howard C Hang
ADP-ribosylation is a post-translational modification that is known to be involved in cellular homeostasis and stress but has been challenging to analyze biochemically. To facilitate the detection of ADP-ribosylated proteins, we show that an alkyne-adenosine analog, N(6)-propargyl adenosine (N(6)pA), is metabolically incorporated in mammalian cells and enables fluorescence detection and proteomic analysis of ADP-ribosylated proteins. Notably, our analysis of N(6)pA-labeled proteins that are upregulated by oxidative stress revealed differential ADP-ribosylation of small GTPases...
January 16, 2017: Nature Chemical Biology
https://www.readbyqxmd.com/read/28091722/hyperphosphorylated-tau-causes-reduced-hippocampal-ca1-excitability-by-relocating-the-axon-initial-segment
#2
Robert John Hatch, Yan Wei, Di Xia, Jürgen Götz
Hyperphosphorylated tau has a critical role in tauopathies such as Alzheimer's disease and frontotemporal dementia, impairing neuronal function and eventually leading to neurodegeneration. A critical role for tau is supported by studies in transgenic mouse models that express the P301L tau mutation found in cases of familial frontotemporal dementia, with the accumulation of hyperphosphorylated tau in the hippocampus causing reductions in hippocampal long-term potentiation and impairments in spatial learning and memory...
January 16, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28091421/massive-pulmonary-embolism-in-recovery-period-of-general-anesthesia-rapid-diagnosis-and-successful-rescue-by-the-guidance-of-transthoracic-echocardiography
#3
Mao Xu, Cheng-Mei Shi, Jiao Li, Jun Wang, Xiang-Yang Guo
No abstract text is available yet for this article.
2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28090564/hepatocyte-toll-like-receptor-5-promotes-bacterial-clearance-and-protects-mice-against-high-fat-diet-induced-liver-disease
#4
Lucie Etienne-Mesmin, Matam Vijay-Kumar, Andrew T Gewirtz, Benoit Chassaing
BACKGROUND & AIMS: Innate immune dysfunction can promote chronic inflammatory diseases of the liver. For example, mice lacking the flagellin receptor Toll-like receptor 5 (TLR5) show microbial dysbiosis and predisposition to high-fat diet (HFD)-induced hepatic steatosis. The extent to which hepatocytes play a direct role in detecting bacterial products in general, or flagellin in particular, is poorly understood. In the present study, we investigated the role of hepatocyte TLR5 in recognizing flagellin, policing bacteria, and protecting against liver disease...
September 2016: Cellular and Molecular Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28090521/big-data-to-the-rescue-of-systemic-inflammatory-response-syndrome-is-electronic-data-mining-the-way-of-the-future
#5
EDITORIAL
Utsav Nandi, Michael A Puskarich, Alan E Jones
No abstract text is available yet for this article.
December 2016: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28089829/resveratrol-and-capsaicin-used-together-as-food-complements-reduce-tumor-growth-and-rescue-full-efficiency-of-low-dose-gemcitabine-in-a-pancreatic-cancer-model
#6
Véronique Vendrely, Evelyne Peuchant, Etienne Buscail, Isabelle Moranvillier, Benoit Rousseau, Aurélie Bedel, Aurélia Brillac, Hubert de Verneuil, François Moreau-Gaudry, Sandrine Dabernat
Pancreatic adenocarcinoma, highly resistant to all current anti-cancer treatments, necessitates new approaches promoting cell death. We hypothesized that combined actions of several Bioactive Food Components (BFCs) might provide specific lethal effect towards tumor cells, sparing healthy cells. Human tumor pancreatic cell lines were tested in vitro for sensitivity to resveratrol, capsaicin, piceatannol, and sulforaphane cytotoxic effects. Combination of two or three components showed striking synergetic effect with gemcitabine in vitro...
January 12, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28089773/mitochondrial-diseases-yeast-as-a-model-for-the-study-of-suppressors
#7
Silvia Francisci, Arianna Montanari
Mitochondrial (mt) tRNA gene mutations are an important cause of human morbidity and are associated with different syndromes. We have previously shown that the mitochondrial protein synthesis elongation factor EF-Tu and isolated sequences from the carboxy-terminal domain of yeast and human mt leucyl-tRNA synthetases (LeuRS), have a wide range of suppression capability among different yeast mt tRNA mutants having defective respiratory phenotype. Here we show that the rescuing capability can be restricted to a specific sequence of six amino acids from the carboxy-terminal domain of mt LeuRS...
January 12, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28089567/adipose-tissue-clk2-promotes-energy-expenditure-during-high-fat-diet-intermittent-fasting
#8
Maximilian Hatting, Amy K Rines, Chi Luo, Mitsuhisa Tabata, Kfir Sharabi, Jessica A Hall, Francisco Verdeguer, Christian Trautwein, Pere Puigserver
A promising approach to treating obesity is to increase diet-induced thermogenesis in brown adipose tissue (BAT), but the regulation of this process remains unclear. Here we find that CDC-like kinase 2 (CLK2) is expressed in BAT and upregulated upon refeeding. Mice lacking CLK2 in adipose tissue exhibit exacerbated obesity and decreased energy expenditure during high-fat diet intermittent fasting. Additionally, tissue oxygen consumption and protein levels of UCP1 are reduced in CLK2-deficient BAT. Phosphorylation of CREB, a transcriptional activator of UCP1, is markedly decreased in BAT cells lacking CLK2 due to enhanced CREB dephosphorylation...
January 11, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28089562/sequential-multiple-assignment-randomized-trials-an-opportunity-for-improved-design-of-stroke-reperfusion-trials
#9
William J Meurer, Nicholas J Seewald, Kelley Kidwell
BACKGROUND: Modern clinical trials in stroke reperfusion fall into 2 categories: alternative systemic pharmacological regimens to alteplase and "rescue" endovascular approaches using targeted thrombectomy devices and/or medications delivered directly for persistently occluded vessels. Clinical trials in stroke have not evaluated how initial pharmacological thrombolytic management might influence subsequent rescue strategy. A sequential multiple assignment randomized trial (SMART) is a novel trial design that can test these dynamic treatment regimens and lead to treatment guidelines that more closely mimic practice...
January 12, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28089546/expression-of-interleukin-6-by-a-recombinant-rabies-virus-enhances-its-immunogenicity-as-a-potential-vaccine
#10
Jun Luo, Boyue Zhang, Yuting Wu, Qin Tian, Jing Zhao, Ziyu Lyu, Qiong Zhang, Mingzhu Mei, Yongwen Luo, Xiaofeng Guo
Several studies have confirmed that interleukin-6 (IL6) mediates multiple biological effects that enhance immune responses when used as an adjuvant. In the present study, recombinant rabies virus (RABV) expressing canine IL6 (rHEP-CaIL6) was rescued and its pathogenicity and immunogenicity were investigated in mice. We demonstrated that mice received a single intramuscular immunization with rHEP-CaIL6 showed an earlier increase and higher maximum titres of virus-neutralizing antibody (VNA) as well as anti-RABV antibodies compared with mice immunized with the parent strain...
January 12, 2017: Vaccine
https://www.readbyqxmd.com/read/28089078/hucmsc-exosome-derived-gpx1-is-required-for-the-recovery-of-hepatic-oxidant-injury
#11
Yongmin Yan, Wenqian Jiang, Youwen Tan, Shengqiang Zou, Hongguang Zhang, Fei Mao, Aihua Gong, Hui Qian, Wenrong Xu
Exosomes are small biological membrane vesicles secreted by various cells, including mesenchymal stem cells (MSCs). We previously reported that MSC-derived exosomes (MSC-Ex) can elicit hepatoprotective effects against toxicant-induced injury. However, the success of MSC-Ex-based therapy for treatment of liver diseases and the underlying mechanisms have not been well characterized. We used human umbilical cord MSC-derived exosome (hucMSC-Ex) administrated by tail vein or oral gavage at different doses and, in engrafted liver mouse models, noted antioxidant and anti-apoptotic effects and rescue from liver failure...
January 6, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28088954/-experiences-of-rescuing-infective-arterial-hemorrhage-and-pseudoaneurysm-in-dcd-kidney-transplantation
#12
D D Zhao, L Q Hong, Z Y Huang, N Na, X F Hua, B Miao, H Li, Q Q Sun
Objective: To summarize experiences of rescuing arterial hemorrhage and pseudoaneurysm caused by infection in donation after cardiac death (DCD) kidney transplantation. Methods: A total of 198 consecutive DCD kidney transplantations between 1 June 2013 and 30 July 2016 in the Third Affiliated Hospital of Sun Yat-sen University were retrospectively analyzed. The means of rescuing infective arterial hemorrhage and pseudoaneurysm after operation and their therapeutic effects were summarized. Results: A total of 5 infective arterial hemorrhage, 2 infective pseudoaneurysm with hemorrhage, and 1 infective pseudoaneurysm developed in 198 DCD kidney transplantation recipients with total morbidity of 4...
January 10, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28088945/clinical-analysis-of-thoracoscopic-surgery-combined-with-intraoperative-autologous-blood-transfusion-in-the-treatment-of-traumatic-hemothorax
#13
Hu-Sai Ma, Ju-Hua Ma, Feng-Lai Xue, Xiang-Ning Fu, Ni Zhang
From January 2013 to January 2015, 19 patients of traumatic hemothorax with hemorrhagic shock were treated in our department by thoracoscopic surgery combined with autologous blood transfusion. This study retrospectively analyzed the therapeutic effect and shared our experience. The average amount of blood transfused back was 662.41 ml ± 269.15 ml. None of the patients developed transfusion reaction and were all discharged uneventfully. Thoracoscopic surgery combined with autologous blood trans- fusion is effective in the rescue of patients with progressive hemothorax and hemorrhagic shock...
December 1, 2016: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/28088906/epratuzumab-and-blinatumomab-as-therapeutic-antibodies-for-treatment-of-pediatric-acute-lymphoblastic-leukemia-current-status-and-future-perspectives
#14
Raffaella Franca, Diego Favretto, Marilena Granzotto, Giuliana Decorti, Marco Rabusin, Gabriele Stocco
BACKGROUND: More than 85% of children affected by acute lymphoblastic leukemia (ALL) are successfully treated; however relapse remains a remarkable clinical concern, with 50-60% of relapsing patients facing a fatal outcome. Management of relapsed patients includes standardized intensive risk-adapted regimens based on conventional drugs, and hematopoietic stem cells transplantation for patients with unfavourable features. Biological drugs, in particular the monoclonal antibody epratuzumab and the bi-functional recombinant single chain peptide blinatumomab, have been recently recognized as novel potential agents to be integrated in salvage ALL therapy to further improve rescue outcome...
January 12, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28088904/fc-fusion-proteins-in-therapy-an-updated-view
#15
Reza Jafari, Naime Majidi Zolbanin, Houshang Rafatpanah, Jafar Majidi, Tohid Kazemi
Fc-fusion proteins are composed of Fc region of IgG antibody (Hinge-CH2-CH3) and a desired linked protein. Fc region of Fc-fusion proteins can bind to neonatal Fc receptor (FcRn) thereby rescuing it from degradation. The first therapeutic Fc-fusion protein was introduced for treatment of AIDS. The molecular designing is the first stage in production of Fc-fusion proteins. The amino acid residues in the Fc region and linked protein are very important in the bioactivity and affinity of the fusion proteins. Although, therapeutic monoclonal antibodies are the top selling biologics but the application of therapeutic Fc-fusion proteins in clinic is in progress and among of these medications Etanercept is the most effective in therapy...
January 13, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28088518/s100a8-protein-attenuates-airway-hyperresponsiveness-by-suppressing-the-contraction-of-airway-smooth-muscle
#16
Yu-Dong Xu, Yu Wang, Lei-Miao Yin, Gyoung-Hee Park, Luis Ulloa, Yong-Qing Yang
Airway hyperresponsiveness (AHR) is a major clinical problem in allergic asthma mainly caused by the hypercontractility of airway smooth muscles (ASM). S100A8 is an important member of the S100 calcium-binding protein family with a potential to regulate cell contractility. Here, we analyze the potential of S100A8 to regulate allergen-induced AHR and ASM contraction. Treatment with recombinant S100A8 (rS100A8) diminished airway hyperresponsiveness in OVA-sensitized rats. ASM contraction assays showed that rS100A8 reduced hypercontractility in both isolated tracheal rings and primary ASM cells treated by acetylcholine...
January 11, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28088476/a-chimeric-protein-of-abrin-and-abrus-precatorius-agglutinin-that-neutralizes-abrin-mediated-lethality-in-mice
#17
Vinita Tiwari, Shradha Bagaria, Anjali A Karande
Abrin, a type II ribosome inactivating protein from the Abrus precatorius plant, is extremely toxic. It has been shown to be 75 times more potent than its infamous sister toxin, ricin and their potential use in bio-warfare is a cause of major concern. Although several vaccine candidates are under clinical trials for ricin, none are available against abrin. The present study proposes a chimeric protein, comprising of 1-123 amino acids taken from the A chain of abrin and 124-175 amino acids from Abrus precatorius agglutinin A chain, as a vaccine candidate against abrin intoxication...
January 11, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28088401/pharmacological-rescue-of-adult-hippocampal-neurogenesis-in-a-mouse-model-of-x-linked-intellectual-disability
#18
Manuela Allegra, Cristina Spalletti, Beatrice Vignoli, Stefano Azzimondi, Irene Busti, Pierre Billuart, Marco Canossa, Matteo Caleo
Oligophrenin-1 (OPHN1) is a Rho GTPase activating protein whose mutations cause X-linked intellectual disability (XLID). How loss of function of Ophn1 affects neuronal development is only partly understood. Here we have exploited adult hippocampal neurogenesis to dissect the steps of neuronal differentiation that are affected by Ophn1 deletion. We found that mice lacking Ophn1 display a reduction in the number of newborn neurons in the dentate gyrus. A significant fraction of the Ophn1-deficient newly generated neurons failed to extend an axon towards CA3, and showed an altered density of dendritic protrusions...
January 11, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28088322/failure-to-rescue-and-preventability-striving-for-the-impossible
#19
EDITORIAL
Angela M Ingraham, Caprice C Greenberg
No abstract text is available yet for this article.
January 11, 2017: Surgery
https://www.readbyqxmd.com/read/28088213/glycine-alanine-dipeptide-repeat-protein-contributes-to-toxicity-in-a-zebrafish-model-of-c9orf72-associated-neurodegeneration
#20
Yu Ohki, Andrea Wenninger-Weinzierl, Alexander Hruscha, Kazuhide Asakawa, Koichi Kawakami, Christian Haass, Dieter Edbauer, Bettina Schmid
BACKGROUND: The most frequent genetic cause of frontotemporal lobar degeneration (FTLD) and amyotrophic lateral sclerosis (ALS) is the expansion of a GGGGCC hexanucleotide repeat in a non-coding region of the chromosome 9 open reading frame 72 (C9orf72) locus. The pathological hallmarks observed in C9orf72 repeat expansion carriers are the formation of RNA foci and deposition of dipeptide repeat (DPR) proteins derived from repeat associated non-ATG (RAN) translation. Currently, it is unclear whether formation of RNA foci, DPR translation products, or partial loss of C9orf72 predominantly drive neurotoxicity in vivo...
January 14, 2017: Molecular Neurodegeneration
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