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Christos Christodoulou, Georgios Oikonomopoulos, Georgia Angeliki Koliou, Ioannis Kostopoulos, Vassiliki Kotoula, Mattheos Bobos, George Pentheroudakis, George Lazaridis, Maria Skondra, Sofia Chrisafi, Angelos Koutras, Dimitrios Bafaloukos, Evangelia Razis, Kyriaki Papadopoulou, Pavlos Papakostas, Haralambos P Kalofonos, Dimitrios Pectasides, Pantelis Skarlos, Konstantine T Kalogeras, George Fountzilas
BACKGROUND: Trastuzumab is a monoclonal antibody against HER2-positive breast cancer. Despite improving the natural history of the disease, there is a number of patients who are resistant to it, whereas all patients will eventually develop resistance and disease will progress. Inconsistent preclinical data show that the IGF-R pathway may contribute to either de novo or acquired resistance to trastuzumab. MATERIALS AND METHODS: In total, 227 trastuzumab-treated metastatic breast cancer patients were evaluated for IGF-1, IGF-1R, GLP-1R, Akt1, Akt2 Akt3 mRNA expression, and IGF-1Rα, IGF-1Rβ, IGF-2R protein expression...
November 2018: Cancer Genomics & Proteomics
Radmila Milačič, Tea Zuliani, Janja Vidmar, Matic Bergant, Eleni Kalogianni, Evangelia Smeti, Nikolaos Skoulikidis, Janez Ščančar
Among different stressors like drought, hydro-morphological alterations, and pollution from agricultural activities, nutrients, organic compounds and discharges from wastewater treatment plants (WWTPs), potentially toxic elements (PTE) may also contribute to the overall pollution of the Evrotas River, Greece. Nevertheless, information on pollution of elements in water and sediments in this river is scarcely documented. There is also no information available on the impact of elemental pollution from the aquatic environmental compartments on biota...
January 15, 2019: Science of the Total Environment
Eleni Papageorgiou, Nikolaos Anthis, Theodora Stathi, Evangelia Tsironi, Ioannis Asproudis
SIGNIFICANCE: Bilateral strokes are rare and should be considered when patients present with bilateral visual field loss characterized by patterns consistent with right and left-sided homonymous visual field defects. Perimetry, dilated funduscopy, and immediate neuroimaging are mandatory for diagnosis, because patients may present with vague symptoms. These cases reflect the retinotopic features of the striate cortex. PURPOSE: The purposes of this study were to describe the unusual presentation of bilateral homonymous visual field defects in three patients with bilateral ischemic strokes and to discuss the clinical and neuroanatomical correlations...
October 18, 2018: Optometry and Vision Science: Official Publication of the American Academy of Optometry
Eleni Kabrani, Van Trung Chu, Evangelia Tasouri, Thomas Sommermann, Kevin Baßler, Thomas Ulas, Thorsten Zenz, Lars Bullinger, Joachim Schultze, Klaus Rajewsky, Sandrine Sander
FOXO1 acts as a tumor suppressor in solid tumors. The oncogenic PI3K pathway suppresses FOXO1 transcriptional activity by enforcing its nuclear exclusion upon AKT-mediated phosphorylation. We show here abundant nuclear expression of FOXO1 in Burkitt lymphoma (BL), a germinal center (GC) B cell derived lymphoma whose pathogenesis is linked to PI3K activation. Recurrent FOXO1 mutations which prevent AKT targeting and lock the transcription factor in the nucleus are used by BL to circumvent mutual exclusivity between PI3K and FOXO1 activation...
October 17, 2018: Blood
Anastasios-Georgios Konstas, Andreas Katsanos, Georgios P Athanasopoulos, Irini C Voudouragkaki, Evangelia S Panagiotou, Eirini Pagkalidou, Anna-Bettina Haidich, Dimitrios A Giannoulis, Eleni Spathi, Theodoros Giannopoulos, L Jay Katz
BACKGROUND: Ideal dosing for the preservative-free (PF) tafluprost/timolol fixed combination (TTFC) remains to be elucidated. RESEARCH DESIGN AND METHODS: This study was a prospective, observer-masked, placebo-controlled, crossover, comparison in 42 consecutive open-angle glaucoma patients whose intraocular pressure (IOP) was insufficiently controlled with preserved latanoprost monotherapy (mean 24-h IOP >20 mmHg). Patients were randomized to either morning (08:00) or evening (20:00) PF TTFC for 3 months and then crossed over...
October 17, 2018: Expert Opinion on Pharmacotherapy
Paraskevi Pavlakou, Evangelia Dounousi, Stefanos Roumeliotis, Theodoros Eleftheriadis, Vassilios Liakopoulos
In space, the special conditions of hypogravity and exposure to cosmic radiation have substantial differences compared to terrestrial circumstances, and a multidimensional impact on the human body and human organ functions. Cosmic radiation provokes cellular and gene damage, and the generation of reactive oxygen species (ROS), leading to a dysregulation in the oxidants⁻antioxidants balance, and to the inflammatory response. Other practical factors contributing to these dysregulations in space environment include increased bone resorption, impaired anabolic response, and even difficulties in detecting oxidative stress in blood and urine samples...
October 15, 2018: International Journal of Molecular Sciences
Demetrios A Arvanitis, Elizabeth Vafiadaki, Daniel M Johnson, Evangelia G Kranias, Despina Sanoudou
Sudden unexpected cardiac death (SCD) accounts for up to half of all-cause mortality of heart failure patients. Standardized cardiology tools such as electrocardiography, cardiac imaging, electrophysiological and serum biomarkers cannot accurately predict which patients are at risk of life-threatening arrhythmic episodes. Recently, a common variant of the histidine-rich calcium binding protein (HRC), the Ser96Ala, was identified as a potent biomarker of malignant arrhythmia triggering in these patients. HRC has been shown to be involved in the regulation of cardiac sarcoplasmic reticulum (SR) Ca2+ cycling, by binding and storing Ca2+ in the SR, as well as interacting with the SR Ca2+ uptake and release complexes...
2018: Frontiers in Physiology
Janna Lehnhoff, Ulf Strauss, Stephan Wierschke, Sabine Grosser, Evangelia Pollali, Ulf C Schneider, Martin Holtkamp, Christoph Dehnicke, Rudolf A Deisz
Alterations of the hyperpolarization activated nonselective cation current (Ih ) are associated with epileptogenesis. Accordingly, the second-generation antiepileptic drug lamotrigine (LTG) enhances Ih in rodent hippocampus. We directly evaluated here whether LTG fails to enhance Ih in neocortical slices from patients with pharmacoresistant epilepsy. With somatic current clamp recordings we observed that LTG depolarized the membrane potential, decreased the input resistance and increased the "sag" in human layer 2/3 neocortical pyramidal neurons when confounding IKir was blocked...
October 10, 2018: Neuropharmacology
Anthi-Marina Markantonatou, Konstantinos Samaras, Evangelia Yannaki, Evaggelia Zachrou, Timoleon-Achilleas Vyzantiadis
Aspergillus galactomannan immunoassay is a main diagnostic and monitoring tool in medical mycology. However, the specificity of the method can be skewered by the presence of several other fungi. Trying to diagnose a possible fungal infection of the lower respiratory tract in a haematology patient, it appeared that the fungus Trichoderma longibrachiatum is an additional probable cause of positive galactomannan results. Although, that Trichoderma is a rare but emerging pathogen in immunocompromised patients, the above information could be a caution point in the clinical evaluation of diagnostic results...
October 11, 2018: Current Microbiology
Yunan Zhou, Matthias Hellberg, Evangelia Kouidi, Asterios Deligiannis, Peter Höglund, Naomi Clyne
BACKGROUND: Abdominal aortic calcification (AAC) is an established risk factor for cardiovascular events in patients with chronic kidney disease (CKD). We hypothesized that AAC is associated with a decline in glomerular filtration rate (GFR) as well as with some other cardiovascular risk factors. MATERIALS AND METHODS: This is a cross-sectional analysis of baseline data from a randomized controlled clinical trial (RENEXC). A total of 151 patients (aged 66 ± 14 years) with an average measured GFR (mGFR) of 22...
October 12, 2018: Clinical Nephrology
Dionysios Tafiadis, Meropi E Helidoni, Spyridon K Chronopoulos, Evangelia I Kosma, Nafsika Ziavra, George A Velegrakis
OBJECTIVE(S): The use of subjective evaluation tools are proven useful and of high clinical value in the case of voice disordered population. For that type of evaluation, self-assessment questionnaires about the severity of the voice like Voice Handicap Index-30 (VHI-30) have been developed. The VHI-30 is the most studied tool which includes psychometrically robustness while guiding physician's therapeutic decision making. Additionally, a valid abbreviated version of VHI-30 was developed for the first time in the Greek Language which is named as Greek Voice Handicap Index-10 (GVHI-10)...
October 6, 2018: Journal of Voice: Official Journal of the Voice Foundation
Evangelos Anagnostou, Stathis Gerakoulis, Panagiota Voskou, Evangelia Kararizou
BACKGROUND AND PURPOSE: Migraine has long been associated with unsteadiness and dizziness but postural control has not been studied in the ictal state. Here, we measured the stability of upright stance during migraine attacks. METHODS: Static balance was assessed prospectively in migraine patients (n=30) during quiet stance for 40 s on a posturographic force platform. Recordings were performed both ictally and in the pain-free interval. Subjects were assessed under 4 different conditions yielding different visual and proprioceptive feedback environments...
October 8, 2018: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
Paraskevi Kazakou, Marianna Theodora, Christina Kanaka-Gantenbein, Evangelia Zapanti, Helen Bouza, Chrysa Petropoulou, George Daskalakis, Stavroula A Paschou, Eleni Anastasiou
A 33-year-old Caucasian woman was referred at 24 + 3 weeks of gestation due to fetal tachycardia and hydrops. She had an uncomplicated pregnancy 16 years previously and was on levothyroxine after total thyroidectomy for Graves' disease 6 years previously, when she developed moderate exophthalmos. Laboratory evaluation revealed appropriate thyroid function for this time of gestation: thyroid stimulating hormone (TSH) 1.7 μU/ml (1-3), fT4 18.53 pmol/l (12-22), with positive antibodies: anti-TPO 157 U/ml (<35), TSH receptor antibodies (TRAb) 171...
October 2018: Case Reports in Women's Health
Evangelia Daskalaki, Nicolas J Pillon, Anna Krook, Craig E Wheelock, Antonio Checa
The application of metabolomics to investigating the cell secretome has garnered popularity owing to the method's large-scale data output, biochemical insight, and prospects for novel target compound discovery. However, there are no standardized protocols for the use of cell growth media, a factor that can exert profound effects upon the detected metabolites, and thus in the interpretability of the resulting data. Herein, we applied a liquid chromatography-high resolution mass spectrometry-based metabolomics approach to examine the influence of 5 different media combinations upon the obtained secretome of two phenotypically different cell lines: human embryonic kidney cells (HEK293) and L6 rat muscle cells...
December 11, 2018: Analytica Chimica Acta
Serena Belluschi, Emily F Calderbank, Valerio Ciaurro, Blanca Pijuan-Sala, Antonella Santoro, Nicole Mende, Evangelia Diamanti, Kendig Yen Chi Sham, Xiaonan Wang, Winnie W Y Lau, Wajid Jawaid, Berthold Göttgens, Elisa Laurenti
Capturing where and how multipotency is lost is crucial to understand how blood formation is controlled. Blood lineage specification is currently thought to occur downstream of multipotent haematopoietic stem cells (HSC). Here we show that, in human, the first lineage restriction events occur within the CD19- CD34+ CD38- CD45RA- CD49f+ CD90+ (49f+ ) HSC compartment to generate myelo-lymphoid committed cells with no erythroid differentiation capacity. At single-cell resolution, we observe a continuous but polarised organisation of the 49f+ compartment, where transcriptional programmes and lineage potential progressively change along a gradient of opposing cell surface expression of CLEC9A and CD34...
October 5, 2018: Nature Communications
Evangelia Tzika, Tobias Dreker, Axel Imhof
In the next 10 years, one billion people are estimated to suffer from disabling consequences of metabolic disorders, making them the number one noncommunicable disease on a global scale by 2030. Lots of risk factors such as dietary intake, lack of exercise and other life style behaviors are considered to play a role in the development of metabolic disorders. Despite the efforts that have been undertaken to unravel their potential causes, the underlying molecular mechanisms remain elusive. Evidence suggests that the pathogenesis involves changes on chromatin and chromatin-modifying enzymes, which can contribute to a persistent dysregulated metabolic phenotype...
2018: Frontiers in Genetics
Michael I Koukourakis, Emmanuel Kontomanolis, Maria Sotiropoulou, Achilleas Mitrakas, Evangelia Dafa, Stamatia Pouliliou, Efthimios Sivridis, Alexandra Giatromanolaki
BACKGROUND: Recently, programmed cell death protein 1 (PD1) blocking and anti-programmed death-ligand 1 (PD-L1) agents were approved for the treatment of various human malignancies. MATERIALS AND METHODS: Our study examined the expression of PD-L1 in neoplastic tissue (17 patients) and the plasma soluble (s)PD-L1 of 32 patients with ovarian carcinoma, in parallel with the levels of specific microRNAs (miRs), using immunohistochemistry, enzyme-linked immunosorbent assay (ELISA) and real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR), respectively...
October 2018: Anticancer Research
Panagiotis Baliakas, Theodoros Moysiadis, Anastasia Hadzidimitriou, Aliki Xochelli, Sabine Jeromin, Andreas Agathangelidis, Mattias Mattsson, Lesley-Ann Sutton, Eva Minga, Lydia Scarfò, Davide Rossi, Zadie Davis, Neus Villamor, Helen Parker, Jana Kotaskova, Evangelia Stalika, Karla Plevova, Larry Mansouri, Diego Cortese, Alba Navarro, Julio Delgado, Marta Larrayoz, Emma Young, Achilles Anagnostopoulos, Karin E Smedby, Gunnar Juliusson, Oonagh Sheehy, Mark Catherwood, Jonathan C Strefford, Niki Stavroyianni, Chrysoula Belessi, Sarka Pospisilova, David Oscier, Gianluca Gaidano, Elias Campo, Claudia Haferlach, Paolo Ghia, Richard Rosenquist, Kostas Stamatopoulos
Chronic lymphocytic leukemia patients with differential somatic hypermutation status of the immunoglobulin heavy variable genes, namely mutated or unmutated, display fundamental clinicobiological differences. Considering this, we assessed prognosis separately within mutated and unmutated chronic lymphocytic leukemia in 3015 patients, hypothesizing that the relative significance of relevant indicators may differ between these two categories. Within Binet-A mutated chronic lymphocytic leukemia patients, besides TP53 abnormalities, trisomy 12 and stereotyped subset #2 membership were equivalently associated with the shortest time-to-first-treatment and a treatment probability at 5- and 10-years after diagnosis of 40% and 55%, respectively; the remaining cases exhibited 5-year and 10-year treatment probability of 12% and 25%, respectively...
September 27, 2018: Haematologica
Farhad Salimi, Geoffrey Morgan, Margaret Rolfe, Evangelia Samoli, Christine T Cowie, Ivan Hanigan, Luke Knibbs, Martin Cope, Fay H Johnston, Yuming Guo, Guy B Marks, Jane Heyworth, Bin Jalaludin
BACKGROUND: Short- and long-term spatiotemporal variation in exposure to air pollution is associated with respiratory morbidity in areas with moderate-to-high level of air pollution, but very few studies have examined whether these associations also exist in areas with low level exposure. OBJECTIVES: We assessed the association between spatial variation in long-term exposure to PM2.5 and NO2 and hospitalisation for all respiratory diseases, asthma, chronic obstructive pulmonary disease (COPD), and pneumonia, in older adults residing in Sydney, Australia, a city with low-level concentrations...
September 24, 2018: Environment International
Mu Chen, Dongzhu Xu, Adonis Z Wu, Evangelia Kranias, Shien-Fong Lin, Peng-Sheng Chen, Zhenhui Chen
AIMS: Phospholamban (PLB) is the key regulator of the cardiac Ca2+ pump (SERCA2a)-mediated sarcoplasmic reticulum Ca2+ stores. We recently reported that PLB is highly concentrated in the nuclear envelope (NE) from where it can modulate perinuclear Ca2+ handling of the cardiomyocytes (CMs). Since inositol 1,4,5-trisphosphate (IP3 ) receptor (IP3 R) mediates nuclear Ca2+ release, we examined whether the nuclear pool of PLB regulates IP3 -induced nuclear Ca2+ handling. METHODS AND RESULTS: Fluo-4 based confocal Ca2+ imaging was performed to measure Ca2+ dynamics across both nucleus and cytosol in saponin-permeabilized CMs isolated from wild-type (WT) or PLB-knockout (PLB-KO) mice...
October 2018: Journal of Molecular and Cellular Cardiology
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