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https://www.readbyqxmd.com/read/28743115/cerebrospinal-fluid-levels-of-14-3-3-gamma-what-does-it-tell-us-about-sporadic-creutzfeldt-jakob-disease
#1
Christian Humpel, Thomas Benke
Clinical diagnosis of Creutzfeldt-Jakob disease (CJD) can be supported by the analysis of Tau and 14-3-3 in the cerebrospinal fluid (CSF). In this short report, we report about a retrospective analysis performed on 2,296 routinely collected CSF samples, and 44 samples with a ratio of phosphoTau181/Tau <0.075 were selected. Analysis was performed with a novel 14-3-3 gamma CircuLex Elisa. We show that control levels were around 6,000 AU/mL and samples from Alzheimer patients were not different from those collected from healthy controls...
July 26, 2017: Pharmacology
https://www.readbyqxmd.com/read/28741142/proteomic-expression-changes-in-large-cerebral-arteries-after-experimental-subarachnoid-hemorrhage-in-rat-are-regulated-by-the-mek-erk1-2-pathway
#2
Anne H Müller, Alistair V G Edwards, Martin R Larsen, Janne Nielsen, Karin Warfvinge, Gro K Povlsen, Lars Edvinsson
Subarachnoid hemorrhage (SAH) is a serious clinical condition where leakage of blood into the subarachnoid space causes an acute rise in intracranial pressure and reduces cerebral blood flow, which may lead to delayed cerebral ischemia and poor outcome. In experimental SAH, we have previously shown that the outcome can be significantly improved by early inhibition of the MAPK/ERK kinase/extracellular signal-regulated kinase (MEK/ERK1/2) pathway. The aim of this study was to apply mass spectrometry to investigate the overall late effects of experimental SAH on cerebrovascular protein expression...
July 24, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/28727767/exploring-the-binding-pathways-of-the-14-3-3%C3%AE-protein-structural-and-free-energy-profiles-revealed-by-hamiltonian-replica-exchange-molecular-dynamics-with-distancefield-distance-restraints
#3
Gabor Nagy, Chris Oostenbrink, Jozef Hritz
The 14-3-3 protein family performs regulatory functions in eukaryotic organisms by binding to a large number of phosphorylated protein partners. Whilst the binding mode of the phosphopeptides within the primary 14-3-3 binding site is well established based on the crystal structures of their complexes, little is known about the binding process itself. We present a computational study of the process by which phosphopeptides bind to the 14-3-3ζ protein. Applying a novel scheme combining Hamiltonian replica exchange molecular dynamics and distancefield restraints allowed us to map and compare the most likely phosphopeptide-binding pathways to the 14-3-3ζ protein...
2017: PloS One
https://www.readbyqxmd.com/read/28707122/segond-s-fracture-a-biomechanical-cadaveric-study-using-navigation
#4
E Monaco, Daniele Mazza, A Redler, D Lupariello, R Lanzetti, M Guzzini, A Ferretti
BACKGROUND: Segond's fracture is a well-recognised radiological sign of an anterior cruciate ligament (ACL) tear. While previous studies evaluated the role of the anterolateral ligament (ALL) and complex injuries on rotational stability of the knee, there are no studies on the biomechanical effect of Segond's fracture in an ACL deficient knee. The aim of this study was to evaluate the effect of a Segond's fracture on knee rotation stability as evaluated by a navigation system in an ACL deficient knee...
July 13, 2017: Journal of Orthopaedics and Traumatology: Official Journal of the Italian Society of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/28681606/identification-of-two-secondary-ligand-binding-sites-in-14-3-3-proteins-using-fragment-screening
#5
Eline Sijbesma, Lukasz Skora, Seppe Leysen, Luc Brunsveld, Uwe Koch, Peter Nussbaumer, Wolfgang Jahnke, Christian Ottmann
Proteins typically interact with multiple binding partners and often different parts of their surfaces are employed for establishing these protein-protein interactions (PPIs). The class of 14-3-3 adapter proteins bind to several hundred other proteins in the cell. Multiple small molecules for the modulation of 14-3-3 PPIs have been disclosed, but they all target the conserved phosphopeptide-binding channel so that selectivity is difficult to achieve. Here we report on the discovery of two individual secondary binding sites that have been identified by combining NMR-based fragment screening and X-ray crystallography...
July 6, 2017: Biochemistry
https://www.readbyqxmd.com/read/28680785/a-case-report-of-probable-sporadic-creutzfeldt-jakob-disease-how-to-approach-early-diagnosis
#6
Bowei Tan, Carlos Morales Mangual, Iftekhar Mahmud, Nosakhare D Tongo, Larisa Mararenko, Arthur Kay
Sporadic Creutzfeldt-Jakob disease (sCJD) is a rare and fatal spongiform encephalopathy characterized by rapidly progressive dementia and myoclonus. The rarity of this disease and varied initial symptoms make the early diagnosis fairly challenging. Here, we present a case initially admitted for confusion and bizarre behaviors. She had acute deterioration of mental status, akinetic mutism, and myoclonus jerks four weeks later. Cerebrospinal fluid (CSF) analysis was positive for protein 14-3-3. Brain magnetic resonance imaging (MRI) showed hyperintensities in the bilateral cortex, basal ganglia, and thalami in diffusion-weighted imaging (DWI)...
May 30, 2017: Curēus
https://www.readbyqxmd.com/read/28674938/herbaspirillum-rubrisubalbicans-a-mild-pathogen-impairs-growth-of-rice-by-augmenting-ethylene-levels
#7
Glaucio Valdameri, Dayane Alberton, Vivian Rotuno Moure, Thiago Borba Kokot, Caroline Kukolj, Liziane Cristina Campos Brusamarello-Santos, Rose Adele Monteiro, Fabio de Oliveira Pedrosa, Emanuel Maltempi de Souza
Herbaspirillum rubrisubalbicans decreases growth of rice. Inoculation of rice with H. rubrisubalbicans increased the ACCO mRNA levels and ethylene production. The H. rubrisubalbicans rice interactions were further characterized by proteomic approach. Herbaspirillum rubrisubalbicans is a well-known growth-promoting rhizobacteria that can also act as a mild phyto-pathogen. During colonisation of rice, RT-qPCR analyses showed that H. rubrisubalbicans up-regulates the methionine recycling pathway as well as phyto-siderophore synthesis genes...
July 3, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28673301/effects-of-deployment-on-diet-quality-and-nutritional-status-markers-of-elite-u-s-army-special-operations-forces-soldiers
#8
Emily K Farina, Jonathan C Taylor, Gary E Means, Nancy E Murphy, Stefan M Pasiakos, Harris R Lieberman, James P McClung
BACKGROUND: Special Operations Forces (SOF) Soldiers deploy frequently and require high levels of physical and cognitive performance. Nutritional status is linked to cognitive and physical performance. Studies evaluating dietary intake and nutritional status in deployed environments are lacking. Therefore, this study assessed the effects of combat deployment on diet quality and serum concentrations of nutritional status markers, including iron, vitamin D, parathyroid hormone (PTH), glucose, and lipids, among elite United States (U...
July 3, 2017: Nutrition Journal
https://www.readbyqxmd.com/read/28668775/towards-an-early-clinical-diagnosis-of-sporadic-cjd-vv2-ataxic-type
#9
Simone Baiardi, Anna Magherini, Sabina Capellari, Veronica Redaelli, Anna Ladogana, Marcello Rossi, Fabrizio Tagliavini, Maurizio Pocchiari, Giorgio Giaccone, Piero Parchi
INTRODUCTION: Sporadic Creutzfeldt-Jakob disease (sCJD) includes a broad spectrum of clinical-pathological subtypes, which complicates the clinical differential diagnosis with other rapidly progressive neurological syndromes. AIM: To provide a better characterisation of clinical features and results of diagnostic investigations, especially at an early disease stage, in patients with sCJDVV2, the second most common sCJD subtype. METHODS: We evaluated neurological symptoms/signs, and results of brain diffusion-weighted resonance imaging (DW-MRI), electroencephalographic recordings (EEG) and cerebrospinal fluid (CSF) biomarker studies in 120 patients with a definite (n=93) or probable (n=27) diagnosis of sCJDVV2...
July 1, 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/28666999/pvhl-suppresses-akt-%C3%AE-catenin-mediated-cell-proliferation-by-inhibiting-14-3-3%C3%AE-%C3%A2-expression
#10
Azucena Castañeda, Carolina Serrano, José Antonio Hernández-Trejo, Itzel Zenidel Gutiérrez-Martínez, Wilber Montejo-López, Mauricio Gómez-Suárez, Marcela Hernández-Ruiz, Abigail Betanzos, Aurora Candelario-Martínez, Hector Romo-Parra, José Antonio Arias-Montaño, Michael Schnoor, Marco Antonio Meraz Ríos, Maria Eugenia Gutierrez-Castillo, Irma Alicia Martínez-Dávila, Nicolás Villegas-Sepúlveda, Daniel Martinez-Fong, Porfirio Nava
The mechanisms controlling degradation of cytosolic β-catenin are important for regulating β-catenin co-transcriptional activity. Loss of pVHL has been shown to stabilize β-catenin, increasing β-catenin transactivation and β-catenin mediated cell proliferation. However, the role of PI3K/Akt in the regulation of β-catenin signaling downstream of pVHL has been never addressed. Here we report that hyperactivation of PI3K/Akt in cells lacking pVHL contributes to the stabilization and nuclear accumulation of active β-catenin...
June 30, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28666328/amyotrophic-lateral-sclerosis-related-mutant-superoxide-dismutase-1-aggregates-inhibit-14-3-3-mediated-cell-survival-by-sequestration-into-the-junq-compartment
#11
Ju-Hwang Park, Hae Rim Jang, In Young Lee, Hye Kyung Oh, Eui-Ju Choi, Hyangshuk Rhim, Seongman Kang
Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disorder characterized by motor neuron loss in the spinal cord and brain. Mutations in the superoxide dismutase 1 (SOD1) gene have been linked to familial ALS. To elucidate the role of SOD1 mutations in ALS, we investigated 14-3-3, a crucial regulator of cell death that was identified in patients with familial ALS. In a transgenic mouse model (SOD1-G93A) of ALS, 14-3-3 co-localized with mutant SOD1 aggregates and was more insoluble in the spinal cords of mutant SOD1 transgenic mice than in those of wild-type mice...
June 28, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28661474/mutant-p53-dictates-the-oncogenic-activity-of-c-abl-in-triple-negative-breast-cancers
#12
Chevaun D Morrison, Jenny C Chang, Ruth A Keri, William P Schiemann
We recently established c-Abl as a potent suppressor of triple-negative breast cancer (TNBC) progression through its reactivation of a p53:p21 signaling axis coupled to senescence. Moreover, we observed co-expression of p53 and c-Abl to be essential for normal mammary epithelial cell physiology, as this relationship is lost upon breast cancer progression. Cytoplasmic c-Abl activity is markedly increased in some TNBCs and contributes to disease progression; however, the mechanisms underlying these events remain largely unknown...
June 29, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28648843/identification-of-regulators-of-germ-stem-cell-enwrapment-by-its-niche-in-c-elegans
#13
Lara M Linden, Kacy L Gordon, Ariel M Pani, Sara G Payne, Aastha Garde, Dane Burkholder, Qiuyi Chi, Bob Goldstein, David R Sherwood
Many stem cell niches contain support cells that increase contact with stem cells by enwrapping them in cellular processes. One example is the germ stem cell niche in C. elegans, which is composed of a single niche cell termed the distal tip cell (DTC) that extends cellular processes, constructing an elaborate plexus that enwraps germ stem cells. To identify genes required for plexus formation and to explore the function of this specialized enwrapping behavior, a series of targeted and tissue-specific RNAi screens were performed...
June 23, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28644254/sporadic-creutzfeldt-jakob-disease-with-unilateral-symptoms-in-the-setting-of-metastatic-renal-cell-carcinoma
#14
Kyle C Rossi, Christine M Stahl, Pengfei Zhang, John W Liang, Lara V Marcuse, Fred Lublin
INTRODUCTION: Although it is not rare for magnetic resonance imaging findings in Creutzfeldt-Jakob disease to be asymmetric, unilateral clinical syndromes are uncommonly reported and may confound diagnosis. In addition, neurological paraneoplastic syndromes are not common in renal cell carcinoma, though there are cases reported, often without an offending antibody isolated. CASE REPORT: A 66-year-old man was admitted with 1 month of left-sided numbness and "loss of control" of the left arm...
July 2017: Neurologist
https://www.readbyqxmd.com/read/28642874/combination-treatment-with-ppar%C3%AE-ligand-and-its-specific-inhibitor-gw9662-downregulates-bis-and-14-3-3-gamma-inhibiting-stem-like-properties-in-glioblastoma-cells
#15
Chang-Nim Im
PPARγ is a nuclear receptor that regulates differentiation and proliferation and is highly expressed in many cancer cells. Its synthetic ligands, such as rosiglitazone and ciglitazone, and its inhibitor GW9662, were shown to induce cellular differentiation, inhibit proliferation, and lead to apoptosis. Glioblastoma is a common brain tumor with poor survival prospects. Recently, glioblastoma stem cells (GSCs) have been examined as a potential target for anticancer therapy; however, little is known about the combined effect of various agents on GSCs...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28638682/oral-ulcer-activity-in-behcet-s-disease-poor-medication-adherence-is-an-underestimated-risk-factor
#16
Gonca Mumcu, Fatma Alibaz-Öner, Sibel Yılmaz Öner, Gülsen Özen, Pamir Atagündüz, Nevsun İnanç, Leyla Köksal, Tülin Ergun, Haner Direskeneli
OBJECTIVE: The aim of this study was to evaluate the relationship between oral ulcer activity and medication adherence according to gender in Behçet's disease (BD) patients. MATERIAL AND METHODS: The study group included 330 BD patients (F/M: 167/163, mean age: 38.5±10.5 years). Oral ulcer activity and medication adherence were evaluated in the previous month. Medication adherence was evaluated using the 8-item Morisky Medication Adherence Scale (MMAS-8) having a score range of "0" to "8" with high scores indicating better adherence...
June 2017: European Journal of Rheumatology
https://www.readbyqxmd.com/read/28635630/development-of-a-high-density-snp-based-linkage-map-and-detection-of-qtl-for-%C3%AE-glucans-protein-content-grain-yield-per-spike-and-heading-time-in-durum-wheat
#17
Ilaria Marcotuli, Agata Gadaleta, Giacomo Mangini, Antonio Massimo Signorile, Silvana Addolorata Zacheo, Antonio Blanco, Rosanna Simeone, Pasqualina Colasuonno
High-density genetic linkage maps of crop species are particularly useful in detecting qualitative and quantitative trait loci for important agronomic traits and in improving the power of classical approaches to identify candidate genes. The aim of this study was to develop a high-density genetic linkage map in a durum wheat recombinant inbred lines population (RIL) derived from two elite wheat cultivars and to identify, characterize and correlate Quantitative Trait Loci (QTL) for β-glucan, protein content, grain yield per spike and heading time...
June 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28634081/quantitative-proteomic-reveals-the-dynamic-of-protein-profile-during-final-oocyte-maturation-in-zebrafish
#18
Chunmei Ge, Weiqun Lu, Aqin Chen
The molecular mechanisms underlying final oocyte maturation in zebrafish (Danio rerio) remain poorly understood. The present study aimed to employ iTRAQ approach for a comprehensive characterization of during zebrafish oocyte maturation proteome and for comparison between fully-grow immature and mature oocytes prior to ovulation. A total of 1568 proteins were identified, which was representing the largest zebrafish isolated oocytes proteome dataset to date. Differential expression analysis revealed 190 proteins significantly changes between immature and mature oocytes, which 136 proteins were up-regulated and 54 proteins were down-regulated in mature oocytes comparison with immature oocytes...
June 17, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28633298/protein-expression-in-tension-wood-formation-monitored-at-high-tissue-resolution-in-populus
#19
Joakim Bygdell, Vaibhav Srivastava, Ogonna Obudulu, Manoj K Srivastava, Robert Nilsson, Björn Sundberg, Johan Trygg, Ewa J Mellerowicz, Gunnar Wingsle
Tension wood (TW) is a specialized tissue with contractile properties that is formed by the vascular cambium in response to gravitational stimuli. We quantitatively analysed the proteomes of Populus tremula cambium and its xylem cell derivatives in stems forming normal wood (NW) and TW to reveal the mechanisms underlying TW formation. Phloem-, cambium-, and wood-forming tissues were sampled by tangential cryosectioning and pooled into nine independent samples. The proteomes of TW and NW samples were similar in the phloem and cambium samples, but diverged early during xylogenesis, demonstrating that reprogramming is an integral part of TW formation...
June 13, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28624170/predictors-of-visit-to-visit-blood-pressure-variability-in-patients-with-hypertension-an-analysis-of-trials-with-an-amlodipine-treatment-arm
#20
Ji-Guang Wang, Duo Zhou, Barrett W Jeffers
We conducted a post hoc analysis of blood pressure (BP) data from long-term antihypertensive trials to identify predictors of visit-to-visit BP variability (BPV). BPV was defined as the within-subject coefficient of variation in systolic BP from week 12 onward. BP data from the Anglo-Scandinavian Cardiac Outcomes Trial-Blood Pressure Lowering Arm, Antihypertensive and Lipid-Lowering Treatment to Prevent Heart Attack Trial, Comparison of Amlodipine Versus Enalapril to Limit Occurrences of Thrombosis, NY92011, and R-0510 trials were pooled and dichotomized into top 25th and bottom 75th percentiles because of positive skew...
May 29, 2017: Journal of the American Society of Hypertension: JASH
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