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https://www.readbyqxmd.com/read/28092922/the-effectiveness-of-free-vascularized-fibular-flaps-in-osteonecrosis-of-the-femoral-head-and-neck-a-systematic-review
#1
Cassandra A Ligh, Jonas A Nelson, John P Fischer, Stephen J Kovach, L Scott Levin
Background Free vascularized fibular flaps (FVFFs) are accepted surgical options to treat osteonecrosis of the femoral head and neck (ONFHN) to prevent conversion to total hip replacement (THR), yet many studies are single institution cohorts, with little generalizability. Purpose The purpose of this study was to perform a systematic review examining the comparative effectiveness of FVFF to treat ONFHN, particularly preventing conversion to a THR and improving hip function/symptoms. Methods We searched PubMed and EMBASE databases using femoral head, free fibula, and femoral neck keywords...
January 16, 2017: Journal of Reconstructive Microsurgery
https://www.readbyqxmd.com/read/28092736/negative-effect-of-chronic-cadmium-exposure-on-growth-histology-ultrastructure-antioxidant-and-innate-immune-responses-in-the-liver-of-zebrafish-preventive-role-of-blue-light-emitting-diodes
#2
Shuang-Shuang Yuan, Zhen-Ming Lv, Ai-Yi Zhu, Jia-Lang Zheng, Chang-Wen Wu
The present study explored the possible preventive effects of blue light emitting diodes (LEDs) on cadmium (Cd)-induced oxidative stress and immunotoxicity in zebrafish. To this end, zebrafish were exposed to a white fluorescent bulb or blue LEDs (LDB, peak at 450nm, at an irradiance of 0.9W/m(2)), and 0 or 30µgL(-1) waterborne Cd for 5 weeks. Growth performance, survival rate, and hepatic histology, ultrastructure, antioxidant and innate immune responses were determined in zebrafish. Cd exposure alone reduced growth and survival rate, and induced oxidative damage and changes in histology and ultrastructure...
January 13, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28092723/pertuzumab-and-breast-cancer-another-piece-in-the-anti-her2-puzzle
#3
Dr Lorenzo Gerratana, Dr Marta Bonotto, Dr Claudia Bozza, Dr Elena Ongaro, Dr Valentina Fanotto, Dr Giacomo Pelizzari, Prof Fabio Puglisi
The mechanism of action of pertuzumab, a recombinant anti-HER2 humanized monoclonal antibody, is complementary to trastuzumab's. On June 8, 2012, the Food and Drug Administration approved the combination of pertuzumab with trastuzumab and docetaxel as first-line treatment of HER2-positive metastatic breast cancer. Furthermore, pertuzumab is the first drug to be approved in the neoadjuvant setting using a pathological complete response as an endpoint. Areas covered: The review provides insights into the main mechanisms of action of pertuzumab...
January 16, 2017: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/28092717/the-culture-war-modern-economics-and-environmental-education-in-the-united-states
#4
Eugene C Hargrove
Teaching ethics in public schools in the United States has been made almost impossible because of the Culture War and Modern Economics. When Catholics began to migrate to the United States in the early nineteenth century, they found that Protestant religion and ethics were taught in public schools and they created their own parochial schools. This controversy has continued for two hundred years. To encourage the Catholics to send their children to the public schools, by 1860 religion and ethics had been removed from the public schools...
September 2016: Cuadernos de Bioética: Revista Oficial de la Asociación Española de Bioética y Ética Médica
https://www.readbyqxmd.com/read/28092690/post-translational-selective-intracellular-silencing-of-acetylated-proteins-with-de-novo-selected-intrabodies
#5
Michele Chirichella, Simonetta Lisi, Marco Fantini, Martina Goracci, Mariantonietta Calvello, Rossella Brandi, Ivan Arisi, Mara D'Onofrio, Cristina Di Primio, Antonino Cattaneo
The ability to selectively interfere with post-translationally modified proteins would have many biological and therapeutic applications. However, post-translational modifications cannot be selectively targeted by nucleic-acid-based interference approaches. Here we describe post-translational intracellular silencing antibody technology (PISA), a method for selecting intrabodies against post-translationally modified proteins. We demonstrate our method by generating intrabodies against native acetylated proteins and showing functional interference in living cells...
January 16, 2017: Nature Methods
https://www.readbyqxmd.com/read/28092675/unbalancing-p53-mdm2-igf-1r-axis-by-mdm2-activation-restrains-the-igf-1-dependent-invasive-phenotype-of-skin-melanoma
#6
C Worrall, N Suleymanova, C Crudden, I Trocoli Drakensjö, E Candrea, D Nedelcu, S-I Takahashi, L Girnita, A Girnita
Melanoma tumors usually retain wild-type p53; however, its tumor-suppressor activity is functionally disabled, most commonly through an inactivating interaction with mouse double-minute 2 homolog (Mdm2), indicating p53 release from this complex as a potential therapeutic approach. P53 and the tumor-promoter insulin-like growth factor type 1 receptor (IGF-1R) compete as substrates for the E3 ubiquitin ligase Mdm2, making their relative abundance intricately linked. Hence we investigated the effects of pharmacological Mdm2 release from the Mdm2/p53 complex on the expression and function of the IGF-1R...
January 16, 2017: Oncogene
https://www.readbyqxmd.com/read/28092663/neural-regulation-of-immunity-molecular-mechanisms-and-clinical-translation
#7
REVIEW
Valentin A Pavlov, Kevin J Tracey
Studies bridging neuroscience and immunology have identified neural pathways that regulate immunity and inflammation. Recent research using methodological advances in molecular genetics has improved our understanding of the neural control of immunity. Here we outline mechanistic insights, focusing on translational relevance and conceptual developments. We also summarize findings from recent clinical studies of bioelectronic neuromodulation in inflammatory and autoimmune diseases.
January 16, 2017: Nature Neuroscience
https://www.readbyqxmd.com/read/28092655/circadian-and-upr-dependent-control-of-cpeb4-mediates-a-translational-response-to-counteract-hepatic-steatosis-under-er-stress
#8
Carlos Maillo, Judit Martín, David Sebastián, Maribel Hernández-Alvarez, Mar García-Rocha, Oscar Reina, Antonio Zorzano, Mercedes Fernandez, Raúl Méndez
The cytoplasmic polyadenylation element-binding (CPEB) proteins regulate pre-mRNA processing and translation of CPE-containing mRNAs in early embryonic development and synaptic activity. However, specific functions in adult organisms are poorly understood. Here we show that CPEB4 is required for adaptation to high-fat-diet- and ageing-induced endoplasmic reticulum (ER) stress, and subsequent hepatosteatosis. Stress-activated liver CPEB4 expression is dual-mode regulated. First, Cpeb4 mRNA transcription is controlled by the circadian clock, and then its translation is regulated by the unfolded protein response (UPR) through upstream open reading frames within the 5'UTR...
January 16, 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28092471/genomics-pipelines-and-data-integration-challenges-and-opportunities-in-the-research-setting
#9
Jeremy Davis-Turak, Sean M Courtney, E Starr Hazard, W Bailey Glen, Willian da Silveira, Timothy Wesselman, Larry P Harbin, Bethany J Wolf, Dongjun Chung, Gary Hardiman
The emergence and mass utilization of high-throughput (HT) technologies, including sequencing technologies (genomics) and mass spectrometry (proteomics, metabolomics, lipids), has allowed geneticists, biologists, and biostatisticians to bridge the gap between genotype and phenotype on a massive scale. These new technologies have brought rapid advances in our understanding of cell biology, evolutionary history, microbial environments, and are increasingly providing new insights and applications towards clinical care and personalized medicine...
January 16, 2017: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/28092363/mouse-models-of-uv-induced-melanoma-genetics-pathology-and-clinical-relevance
#10
Chi-Ping Day, Rachel Marchalik, Glenn Merlino, Helen Michael
Melanocytes, a neural crest cell derivative, produce pigment to protect keratinocytes from ultraviolet radiation (UVR). Although melanocytic lesions such as nevi and cutaneous malignant melanomas are known to be associated with sun exposure, the role of UVR in oncogenesis is complex and has yet to be clearly elucidated. UVR appears to have a direct mutational role in inducing or promoting melanoma formation as well as an indirect role through microenvironmental changes. Recent advances in the modeling of human melanoma in animals have built platforms upon which prospective studies can begin to investigate these questions...
January 16, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28092360/chemical-proteomics-reveals-adp-ribosylation-of-small-gtpases-during-oxidative-stress
#11
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/28092273/in-vivo-testing-of-extracorporeal-membrane-ventilators-ila-activve%C3%A2-vs-prototype-i-lung%C3%A2
#12
Sabine Kischkel, Stefan Bergt, Beate Brock, Johan von Grönheim, Anne Herbst, Marc-Jonas Epping, Georg Matheis, Esther Novosel, Joerg Schneider, Philipp Warnke, Andreas Podbielski, Jan P Roesner, Peter I Lelkes, Brigitte Vollmar
A side-by-side comparison of the decarboxylation efficacy of two pump-driven veno-venous extracorporeal lung assist devices, i.e. a first prototype of the new miniaturized ambulatory extracorporeal membrane ventilator, I-lung® versus the commercial system iLA-activve® over a period of 72 hours in a large animal model.Fifteen German Landrace pigs were anesthetized and underwent mechanical hypoventilation to induce severe hypercapnia. Decarboxylation was accomplished by either the I-lung® or the iLA-activve® via a double lumen catheter in the jugular vein...
January 4, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28092036/creation-of-phosphotyrosine-superbinders-by-directed-evolution-of-an-sh2-domain
#13
Haiming Huang, Tomonori Kaneko, Sachdev S Sidhu, Shawn S C Li
Commercial antibodies raised against phosphotyrosine have been widely used as reagents to detect or isolate tyrosine-phosphorylated proteins from cellular samples. However, these antibodies are costly and are not amenable to in-house production in an academic lab setting. In this chapter, we describe a method to generate super-high affinity SH2 domains, dubbed the phosphotyrosine superbinders, by evolving a natural SH2 domain using the phage display technology. The superbinders are stable and can be easily produced in Escherichia coli in large quantities...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28091958/identification-and-anticoagulant-activity-of-a-novel-kunitz-type-protein-ha11-from-the-salivary-gland-of-the-tick-hyalomma-asiaticum
#14
Houshuang Zhang, Ruiqiong Qiao, Haiyan Gong, Jie Cao, Yongzhi Zhou, Jinlin Zhou
Kunitz/bovine pancreatic trypsin inhibitor proteins are abundant in the salivary glands of ticks and perform multiple functions in blood feeding, including inhibiting blood coagulation, regulating host blood supply and disrupting host angiogenesis. In this study, we identified a novel gene designated HA11 (Hyalomma asiaticum 11 kDa protein) from the salivary gland of the tick H. asiaticum. HA11 is encoded by a gene with an open reading frame of 306 bp that is translated into a deduced 101 amino acid 11 kDa protein that shares 27% sequence identity with a Kunitz-like protease inhibitor precursor in Amblyomma variegatum...
January 13, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28091936/task-specific-motor-rehabilitation-therapy-after-stroke-improves-performance-in-a-different-motor-task-translational-evidence
#15
M El Amki, P Baumgartner, O Bracko, A R Luft, S Wegener
While the stroke survivor with a motor deficit strives for recovery of all aspects of daily life movements, neurorehabilitation training is often task specific and does not generalize to movements other than the ones trained. In rodent models of post-stroke recovery, this problem is poorly investigated as the training task is often the same as the one that measures motor function. The present study investigated whether motor training by pellet reaching translates into enhancement of different motor functions in rats after stroke...
January 14, 2017: Translational Stroke Research
https://www.readbyqxmd.com/read/28091787/production-of-water-soluble-yellow-pigments-via-high-glucose-stress-fermentation-of-monascus-ruber-cgmcc-10910
#16
Meihua Wang, Tao Huang, Gong Chen, Zhenqiang Wu
Monascus pigments are secondary metabolites of Monascus species and are mainly composed of yellow pigments, orange pigments and red pigments. In this study, a larger proportion of Monascus yellow pigments could be obtained through the selection of the carbon source. Hydrophilic yellow pigments can be largely produced extracellularly by Monascus ruber CGMCC 10910 under conditions of high glucose fermentation with low oxidoreduction potential (ORP). However, keeping high glucose levels later in the culture causes translation or a reduction of yellow pigment...
January 13, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28091667/selective-recognition-of-the-di-trimethylammonium-motif-by-an-artificial-carboxycalixarene-receptor
#17
Thomas Hanauer, Richard J Hopkinson, Kamal Patel, Yu Li, Danilo Correddu, Akane Kawamura, Vijayalekshmi Sarojini, Ivanhoe K H Leung, Tobias Gruber
Chemical tools that recognise post-translational modifications have promising applications in biochemistry and in therapy. We report a simple carboxycalixarene that selectively binds molecules containing di/trimethylammonium moieties in isolation, in cell lysates and when incorporated in histone peptides. Our findings reveal the potential of using carboxycalixarene-based receptors to study epigenetic regulation.
January 16, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28091612/ribosome-profiling-guided-depletion-of-an-mrna-increases-cell-growth-rate-and-protein-secretion
#18
Thomas Beuchert Kallehauge, Shangzhong Li, Lasse Ebdrup Pedersen, Tae Kwang Ha, Daniel Ley, Mikael Rørdam Andersen, Helene Faustrup Kildegaard, Gyun Min Lee, Nathan E Lewis
Recombinant protein production coopts the host cell machinery to provide high protein yields of industrial enzymes or biotherapeutics. However, since protein translation is energetically expensive and tightly controlled, it is unclear if highly expressed recombinant genes are translated as efficiently as host genes. Furthermore, it is unclear how the high expression impacts global translation. Here, we present the first genome-wide view of protein translation in an IgG-producing CHO cell line, measured with ribosome profiling...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28091582/androgen-mediated-regulation-of-endoplasmic-reticulum-associated-degradation-and-its-effects-on-prostate-cancer
#19
Yalcin Erzurumlu, Petek Ballar
The endoplasmic reticulum (ER) comprises thirty percent of the newly translated proteins in eukaryotic cells. The quality control mechanism within the ER distinguishes between properly and improperly folded proteins and ensures that unwanted proteins are retained in the ER and subsequently degraded through ER-associated degradation (ERAD). Besides cleaning of misfolded proteins ERAD is also important for physiological processes by regulating the abundance of normal proteins of the ER. Thus it is important to unreveal the regulation patterns of ERAD...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28091566/efficient-generation-of-hpsc-derived-midbrain-dopaminergic-neurons-in-a-fully-defined-scalable-3d-biomaterial-platform
#20
Maroof M Adil, Gonçalo M C Rodrigues, Rishikesh U Kulkarni, Antara T Rao, Nicole E Chernavsky, Evan W Miller, David V Schaffer
Pluripotent stem cells (PSCs) have major potential as an unlimited source of functional cells for many biomedical applications; however, the development of cell manufacturing systems to enable this promise faces many challenges. For example, there have been major recent advances in the generation of midbrain dopaminergic (mDA) neurons from stem cells for Parkinson's Disease (PD) therapy; however, production of these cells typically involves undefined components and difficult to scale 2D culture formats. Here, we used a fully defined, 3D, thermoresponsive biomaterial platform to rapidly generate large numbers of action-potential firing mDA neurons after 25 days of differentiation (~40% tyrosine hydroxylase (TH) positive, maturing into 25% cells exhibiting mDA neuron-like spiking behavior)...
January 16, 2017: Scientific Reports
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