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https://www.readbyqxmd.com/read/28799247/the-valosin-containing-protein-is-a-novel-repressor-of-cardiomyocyte-hypertrophy-induced-by-pressure-overload
#1
Ning Zhou, Ben Ma, Shaunrick Stoll, Tristan T Hays, Hongyu Qiu
Hypertension-induced left ventricular hypertrophy (LVH) is an independent risk factor for heart failure. Regression of LVH has emerged as a major goal in the treatment of hypertensive patients. Here, we tested our hypothesis that the valosin-containing protein (VCP), an ATPase associate protein, is a novel repressor of cardiomyocyte hypertrophy under the pressure overload stress. Left ventricular hypertrophy (LVH) was determined by echocardiography in 4-month male spontaneously hypertensive rats (SHRs) vs. age-matched normotensive Wistar Kyoto (WKY) rats...
August 11, 2017: Aging Cell
https://www.readbyqxmd.com/read/28794043/sorafenib-impedes-rift-valley-fever-virus-egress-by-inhibiting-valosin-containing-protein-function-in-the-cellular-secretory-pathway
#2
Ashwini Brahms, Rajini Mudhasani, Chelsea Pinkham, Krishna Kota, Farooq Nassar, Rouzbeh Zamani, Sina Bavari, Kylene Kehn-Hall
There is an urgent need for therapeutic development to combat Rift Valley fever virus (RVFV) infections, which causes devastating disease in both humans and animals. In an effort to repurpose drugs for RVFV treatment, our previous studies screened a library of FDA-approved drugs. The most promising candidate identified was the hepatocellular and renal cell carcinoma drug, sorafenib. Mechanism of action studies indicated sorafenib targeted a late stage in virus infection and caused a buildup of virions within cells...
August 9, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28782697/the-role-of-brachioradialis-release-during-ao-type-c-distal-radius-fracture-fixation
#3
Tao Ma, Xin Zheng, Xiao-Bo He, Kai-Jin Guo
INTRODUCTION: Open reduction and internal fixation of distal radius fractures often necessitates release of the brachioradialis from the radial styloid. However, whether this common procedure makes the reduction and fixation easier and affects the elbow function has not been fully understood. HYPOTHESIS: Brachioradialis (BR) release during volar plate fixation for type C distal radius fractures makes internal reduction and fixation easier, and it does not adversely affect wrist or elbow function...
August 3, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28777108/genetics-in-inclusion-body-myositis
#4
Simon Rothwell, James B Lilleker, Janine A Lamb
PURPOSE OF REVIEW: To review the advances in our understanding of the genetics of inclusion body myositis (IBM) in the past year. RECENT FINDINGS: One large genetic association study focusing on immune-related genes in IBM has refined the association within the human leukocyte antigen (HLA) region to HLA-DRB1 alleles, and identified certain amino acid positions in HLA-DRB1 that may explain this risk. A suggestive association with CCR5 may indicate genetic overlap with other autoimmune diseases...
August 1, 2017: Current Opinion in Rheumatology
https://www.readbyqxmd.com/read/28760999/exploiting-conformational-plasticity-in-the-aaa-protein-vcp-p97-to-modify-function
#5
Anne Kathrin Schütz, Enrico Rennella, Lewis E Kay
p97/VCP, a member of the AAA+ (ATPases associated with diverse cellular activities) family of proteins, is implicated in the etiology of a group of degenerative diseases affecting bone and muscle tissue as well as the central nervous system. Methyl-TROSY-based NMR studies have previously revealed how disease-causing mutations deregulate a subtle dynamic conformational equilibrium involving the N-terminal domain (NTD) with implications for the binding of certain adaptors, providing insight into how disease mutations lead to abnormal function...
July 31, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28754127/predictive-biomarkers-of-resistance-to-hypofractionated-radiotherapy-in-high-grade-glioma
#6
Julian Biau, Emmanuel Chautard, Leanne De Koning, Frank Court, Bruno Pereira, Pierre Verrelle, Marie Dutreix
BACKGROUND: Radiotherapy plays a major role in the management of high grade glioma. However, the radioresistance of glioma cells limits its efficiency and drives recurrence inside the irradiated tumor volume leading to poor outcome for patients. Stereotactic hypofractionated radiotherapy is one option for recurrent high grade gliomas. Optimization of hypofractionated radiotherapy with new radiosensitizing agents requires the identification of robust druggable targets involved in radioresistance...
July 28, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28738334/time-course-of-radiological-imaging-and-variable-interindividual-symptoms-in-amyotrophic-lateral-sclerosis-and-frontotemporal-dementia-associated-with-p-arg487his-mutation-in-the-vcp%C3%A2-gene
#7
Makito Hirano, Yuko Yamagishi, Satoshi Yanagimoto, Kazumasa Saigoh, Yusaku Nakamura, Susumu Kusunoki
To our knowledge, this is the first study to report the time course of radiological imaging of 3 patients from 2 families with VCP-related amyotrophic lateral sclerosis (ALS) and dementia. Both families shared the same p.Arg487His mutation in the VCP gene encoding valosin-containing protein. The first patient started to have a typical form of ALS, followed by dementia 7 years later. The second patient, a brother of the first one, had frontotemporal dementia and parkinsonism. The third patient had simultaneous ALS and dementia...
2017: European Neurology
https://www.readbyqxmd.com/read/28724763/species-specificity-of-vaccinia-virus-complement-control-protein-towards-bovine-classical-pathway-is-governed-primarily-by-direct-interaction-of-its-acidic-residues-with-factor-i
#8
Jitendra Kumar, Viveka Nand Yadav, Swastik Phulera, Ashish Kamble, Avneesh Kumar Gautam, Hemendra Singh Panwar, Arvind Sahu
Poxviruses display species tropism - variola virus is a human-specific virus, while vaccinia virus causes repeated outbreaks in dairy cattle. Consistent with this, variola virus complement regulator SPICE exhibit selectivity in inhibiting the human alternative complement pathway and vaccinia virus complement regulator VCP display selectivity in inhibiting the bovine alternative complement pathway. In the present study, we examined the species-specificity of VCP and SPICE towards the classical pathway (CP). We observed that VCP is ∼43-fold superior in inhibiting bovine CP than SPICE...
July 19, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28724584/vcp-related-multisystem-proteinopathy-presenting-as-early-onset-parkinson-disease
#9
Martin Regensburger, Matthias Türk, Axel Pagenstecher, Rolf Schröder, Jürgen Winkler
No abstract text is available yet for this article.
July 19, 2017: Neurology
https://www.readbyqxmd.com/read/28710704/systemic-analysis-of-mirnas-in-pd-stress-condition-mir-5701-modulates-mitochondrial-lysosomal-cross-talk-to-regulate-neuronal-death
#10
Paresh Prajapati, Lakshmi Sripada, Kritarth Singh, Milton Roy, Khyati Bhatelia, Pooja Dalwadi, Rajesh Singh
Parkinson's disease (PD) is complex neurological disorder and is prevalent in the elderly population. This is primarily due to loss of dopaminergic neurons in the substantia nigra pars compacta (SNc) region of the brain. The modulators of the selective loss of dopaminergic neurons in PD are still not well understood. The small non-coding RNAs specifically miRNAs fine-tune the protein levels by post-transcriptional gene regulation. The role of miRNAs in PD pathogenesis is still not well characterized. In the current study, we identified the miRNA expression pattern in 6-OHDA-induced PD stress condition in SH-SY5Y, dopaminergic neuronal cell line...
July 14, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28706168/-the-effects-of-violence-coping-program-based-on-middle-range-theory-of-resilience-on-emergency-room-nurses-resilience-violence-coping-nursing-competency-and-burnout
#11
Seung Min Lee, Kyung Mi Sung
PURPOSE: The purpose of this study was to examine the effects of a violence coping program (VCP) based on Polk's middle-range theory of resilience on nursing competency, resilience, burnout, and the ability to cope with violence in nurses working in emergency rooms. METHODS: A quasi-experimental study, with a nonequivalent control group and a pretest-posttest design, was conducted. Participants were 36 nurses who worked in emergency rooms and had experienced violence; 18 nurses from D hospital and 18 nurses from C hospital were assigned to the experimental and control groups, respectively...
June 2017: Journal of Korean Academy of Nursing
https://www.readbyqxmd.com/read/28692196/genotype-phenotype-study-in-patients-with-vcp-valosin-containing-protein-mutations-associated-with-multisystem-proteinopathy
#12
Ebaa Al-Obeidi, Sejad Al-Tahan, Abhilasha Surampalli, Namita Goyal, Annabel Wang, Andreas Hermann, Molly Omizo, Charles Smith, Tahseen Mozaffar, Virginia Kimonis
Mutations in valosin-containing protein (VCP), an ATPase involved in protein degradation and autophagy, cause VCP disease, a progressive autosomal dominant adult onset multisystem proteinopathy. The goal of this study is to examine if phenotypic differences in this disorder could be explained by the specific gene mutations. We therefore studied 231 individuals (118 males, 113 females) from 36 families carrying 15 different VCP mutations. We analyzed correlation between the different mutations and prevalence, age of onset and severity of myopathy, PDB, and FTD, and other comorbidities...
July 10, 2017: Clinical Genetics
https://www.readbyqxmd.com/read/28691899/aggregation-of-a-hepatitis-c-virus-replicase-module-induced-by-ablation-of-p97-vcp
#13
Zhigang Yi, Zhenghong Yuan
Hijacking host membranes to assemble a membrane-associated viral replicase is a hallmark of almost all positive-strand RNA viruses. However, how the virus co-opts host factors to facilitate this energy-unfavourable process is incompletely understood. In a previous study, using hepatitis C virus (HCV) as a model and employing affinity purification of the viral replicase, we identified a valosin-containing protein (p97/VCP), a member of the ATPases associated with diverse cellular activities (AAA+ ATPase family), as a viral replicase-associated host factor...
July 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28689657/wnt-dependent-inactivation-of-the-groucho-tle-co-repressor-by-the-hect-e3%C3%A2-ubiquitin-ligase-hyd-ubr5
#14
Joshua E Flack, Juliusz Mieszczanek, Nikola Novcic, Mariann Bienz
Extracellular signals are transduced to the cell nucleus by effectors that bind to enhancer complexes to operate transcriptional switches. For example, the Wnt enhanceosome is a multiprotein complex associated with Wnt-responsive enhancers through T cell factors (TCF) and kept silent by Groucho/TLE co-repressors. Wnt-activated β-catenin binds to TCF to overcome this repression, but how it achieves this is unknown. Here, we discover that this process depends on the HECT E3 ubiquitin ligase Hyd/UBR5, which is required for Wnt signal responses in Drosophila and human cell lines downstream of activated Armadillo/β-catenin...
July 20, 2017: Molecular Cell
https://www.readbyqxmd.com/read/28677008/pigment-structure-in-the-violaxanthin-chlorophyll-a-binding-protein-vcp
#15
Manuel J Llansola-Portoles, Radek Litvin, Cristian Ilioaia, Andrew A Pascal, David Bina, Bruno Robert
Resonance Raman spectroscopy was used to evaluate pigment-binding site properties in the violaxanthin-chlorophyll-a-binding protein (VCP) from Nannochloropsis oceanica. The pigments bound to this antenna protein are chlorophyll-a, violaxanthin, and vaucheriaxanthin. The molecular structures of bound Chl-a molecules are discussed with respect to those of the plant antenna proteins LHCII and CP29, the crystal structures of which are known. We show that three populations of carotenoid molecules are bound by VCP, each of which is in an all-trans configuration...
July 4, 2017: Photosynthesis Research
https://www.readbyqxmd.com/read/28660197/a-mighty-protein-extractor-of-the-cell-structure-and-function-of-the-p97-cdc48-atpase
#16
REVIEW
Yihong Ye, Wai Kwan Tang, Ting Zhang, Di Xia
p97/VCP (known as Cdc48 in S. cerevisiae or TER94 in Drosophila) is one of the most abundant cytosolic ATPases. It is highly conserved from archaebacteria to eukaryotes. In conjunction with a large number of cofactors and adaptors, it couples ATP hydrolysis to segregation of polypeptides from immobile cellular structures such as protein assemblies, membranes, ribosome, and chromatin. This often results in proteasomal degradation of extracted polypeptides. Given the diversity of p97 substrates, this "segregase" activity has profound influence on cellular physiology ranging from protein homeostasis to DNA lesion sensing, and mutations in p97 have been linked to several human diseases...
2017: Frontiers in Molecular Biosciences
https://www.readbyqxmd.com/read/28658876/combined-left-recurrent-laryngeal-nerve-and-phrenic-nerve-palsy-a-rare-presentation-of-thoracic-aortic-aneurysm
#17
Pradosh Kumar Sarangi, Pratisruti Hui, H S Sagar, Dinesh Kumar Kisku, Jayashree Mohanty
Hoarseness of voice due to Vocal Cord Palsy (VCP) resulting from aortic aneurysm is a rare entity. Hoarseness due to left Recurrent Laryngeal Nerve (RLN) paralysis caused by identifiable cardiovascular disease has been described as Ortner's syndrome or Cardiovocal syndrome. Very rarely, thoracic aortic aneurysm can cause Phrenic Nerve (PN) palsy causing hemidiaphragm paralysis. But, aortic aneurysm causing both RLN and PN palsy is an extremely rare occasion. Our literature review showed only three cases of combined RLN and PN palsy due to thoracic aortic aneurysm...
May 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28643412/rhodium-i-catalyzed-bridged-5-2-cycloaddition-of-cis-allene-vinylcyclopropanes-to-synthesize-the-bicyclo-4-3-1-decane-skeleton
#18
Cheng-Hang Liu, Zhi-Xiang Yu
Previously reported was that cis-ene-vinylcyclopropanes (cis-ene-VCPs) underwent Rh-catalyzed [5+2] reaction to give 5,7-fused bicyclic products, where vinylcyclopropane (VCP) acts as five-carbon synthon. Unfortunately, this reaction had very limited scope. Replacing the 2π component of cis-ene-VCPs to allene moiety, the corresponding cis-allene-VCPs did not undergo the expected normal [5+2] cycloaddition to give 5,7-fused bicyclic products. Instead, the challenging bicyclo[4.3.1]decane skeleton was obtained via an unprecedented bridged [5+2] cycloaddition...
June 23, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28611990/structure-and-function-of-p97-and-pex1-6-type-ii-aaa-complexes
#19
REVIEW
Paul Saffert, Cordula Enenkel, Petra Wendler
Protein complexes of the Type II AAA+ (ATPases associated with diverse cellular activities) family are typically hexamers of 80-150 kDa protomers that harbor two AAA+ ATPase domains. They form double ring assemblies flanked by associated domains, which can be N-terminal, intercalated or C-terminal to the ATPase domains. Most prominent members of this family include NSF (N-ethyl-maleimide sensitive factor), p97/VCP (valosin-containing protein), the Pex1/Pex6 complex and Hsp104 in eukaryotes and ClpB in bacteria...
2017: Frontiers in Molecular Biosciences
https://www.readbyqxmd.com/read/28590308/perioperative-factors-related-to-the-severity-of-vocal-cord-paralysis-after-thoracic-cardiovascular-surgery-a-retrospective-review
#20
Hiroki Taenaka, Sho Carl Shibata, Kenta Okitsu, Takeshi Iritakenishi, Tatsuyuki Imada, Akinori Uchiyama, Yuji Fujino
BACKGROUND: Vocal cord paralysis (VCP) is a rare complication of thoracic cardiovascular surgery. In severe cases, life-threatening airway obstruction may occur. OBJECTIVE: To evaluate the incidence and severity of VCP among patients who underwent thoracic cardiovascular surgery and to identify possible risk factors. DESIGN: Single-centre retrospective review of adult patients. SETTING: Osaka University Hospital, Suita, Japan, from January 2013 to August 2015...
July 2017: European Journal of Anaesthesiology
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