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Christiane albrecht

Daniel Navin Olschewski, Verena Hofschröer, Nikolaj Nielsen, Daniela G Seidler, Albrecht Schwab, Christian Stock
BACKGROUND/AIMS: The peptide hormone angiotensin II (ATII) plays a prominent role in regulating vasoconstriction and blood pressure. Its primary target is the angiotensin II receptor type 1 (AT1), the stimulation of which induces an increase in cytosolic [Ca2+] and calmodulin activation. Ca2+-bound (activated) calmodulin stimulates the activity of the Na+/ H+ exchanger isoform 1 (NHE1); and increased NHE1 activity is known to promote melanoma cell motility. The competitive AT1 receptor inhibitor losartan is often used to lower blood pressure in hypertensive patients...
March 16, 2018: Cellular Physiology and Biochemistry
Holger Lörchner, Christian Widera, Yunlong Hou, Albrecht Elsässer, Henning Warnecke, Evangelos Giannitsis, Jean-Sebastien Hulot, Thomas Braun, Kai C Wollert, Jochen Pöling
BACKGROUND: Regenerating islet-derived protein 3 beta (Reg3β) is a cardiomyocyte-derived chemokine for macrophages that is upregulated after myocardial infarction (MI) in mice. Here, we hypothesized that monitoring Reg3β expression might provide specific information on the degree of cardiac inflammation, which is a key determinant in disease progression and prognosis of patients with acute coronary syndrome (ACS). METHODS AND RESULTS: The expression of Reg3β and other inflammatory markers including C-reactive protein (CRP) and myeloperoxidase (MPO) was measured by immunoblotting at serial time points in the hearts and serum of mice with acute MI...
May 1, 2018: International Journal of Cardiology
Felicia Turowski, Ulrich Hügle, Arno Dormann, Matthias Bechtler, Ralf Jakobs, Uwe Gottschalk, Ellen Nötzel, Dirk Hartmann, Albrecht Lorenz, Frank Kolligs, Wilfried Veltzke-Schlieker, Andreas Adler, Olaf Becker, Bertram Wiedenmann, Nataly Bürgel, Hanno Tröger, Michael Schumann, Severin Daum, Britta Siegmund, Christian Bojarski
BACKGROUND AND AIMS: The aim of the study was to evaluate the usefulness and diagnostic and therapeutic outcome of the single-operator cholangiopancreatoscopy (SOC) with SpyGlassDS™. METHODS: In a retrospective multicenter study between November 2015 and January 2017, SpyGlassDS™ procedures were analyzed in participating centers. Indications, accuracy of SOC-guided biopsies, management of large bile duct stones, and complications were analyzed. Follow-up was 4 months...
March 12, 2018: Surgical Endoscopy
Joji B Kuramatsu, Jochen A Sembill, Stefan T Gerner, Maximilian I Sprügel, Manuel Hagen, Sebastian S Roeder, Matthias Endres, Karl Georg Haeusler, Jan Sobesky, Johannes Schurig, Sarah Zweynert, Miriam Bauer, Peter Vajkoczy, Peter A Ringleb, Jan Purrucker, Timolaos Rizos, Jens Volkmann, Wolfgang Müllges, Peter Kraft, Anna-Lena Schubert, Frank Erbguth, Martin Nueckel, Peter D Schellinger, Jörg Glahn, Ulrich J Knappe, Gereon R Fink, Christian Dohmen, Henning Stetefeld, Anna Lena Fisse, Jens Minnerup, Georg Hagemann, Florian Rakers, Heinz Reichmann, Hauke Schneider, Sigrid Wöpking, Albert Christian Ludolph, Sebastian Stösser, Hermann Neugebauer, Joachim Röther, Peter Michels, Michael Schwarz, Gernot Reimann, Hansjörg Bäzner, Henning Schwert, Joseph Claßen, Dominik Michalski, Armin Grau, Frederick Palm, Christian Urbanek, Johannes C Wöhrle, Fahid Alshammari, Markus Horn, Dirk Bahner, Otto W Witte, Albrecht Günther, Gerhard F Hamann, Hannes Lücking, Arnd Dörfler, Stephan Achenbach, Stefan Schwab, Hagen B Huttner
Aims: Evidence is lacking regarding acute anticoagulation management in patients after intracerebral haemorrhage (ICH) with implanted mechanical heart valves (MHVs). Our objective was to investigate anticoagulation reversal and resumption strategies by evaluating incidences of haemorrhagic and thromboembolic complications, thereby defining an optimal time-window when to restart therapeutic anticoagulation (TA) in patients with MHV and ICH. Methods and results: We pooled individual patient-data (n = 2504) from a nationwide multicentre cohort-study (RETRACE, conducted at 22 German centres) and eventually identified MHV-patients (n = 137) with anticoagulation-associated ICH for outcome analyses...
February 24, 2018: European Heart Journal
Frank Tüttelmann, Christian Ruckert, Albrecht Röpke
Infertility is a common condition estimated to affect 10-15% of couples. The clinical causes are attributed in equal parts to the male and female partners. Diagnosing male infertility mostly relies on semen (and hormone) analysis, which results in classification into the two major phenotypes of oligo- and azoospermia. The clinical routine analyses have not changed over the last 20 years and comprise screening for chromosomal aberrations and Y‑chromosomal azoospermia factor deletions. These tests establish a causal genetic diagnosis in about 4% of unselected men in infertile couples and 20% of azoospermic men...
2018: Medizinische Genetik: Mitteilungsblatt des Berufsverbandes Medizinische Genetik E.V
Matthias Weider, Laura Julia Starost, Katharina Groll, Melanie Küspert, Elisabeth Sock, Miriam Wedel, Franziska Fröb, Christian Schmitt, Tina Baroti, Anna C Hartwig, Simone Hillgärtner, Sandra Piefke, Tanja Fadler, Marc Ehrlich, Corinna Ehlert, Martin Stehling, Stefanie Albrecht, Ammar Jabali, Hans R Schöler, Jürgen Winkler, Tanja Kuhlmann, Michael Wegner
Oligodendrocytes produce myelin for rapid transmission and saltatory conduction of action potentials in the vertebrate central nervous system. Activation of the myelination program requires several transcription factors including Sox10, Olig2, and Nkx2.2. Functional interactions among them are poorly understood and important components of the regulatory network are still unknown. Here, we identify Nfat proteins as Sox10 targets and regulators of oligodendroglial differentiation in rodents and humans. Overall levels and nuclear fraction increase during differentiation...
March 2, 2018: Nature Communications
Xiao Huang, Pascale Anderle, Lu Hostettler, Marc U Baumann, Daniel V Surbek, Edgar C Ontsouka, Christiane Albrecht
BACKGROUND: Gestational disorders such as intrauterine growth restriction (IUGR) and pre-eclampsia (PE) are main causes of poor perinatal outcomes worldwide. Both diseases are related with impaired materno-fetal nutrient transfer, but the crucial transport mechanisms underlying IUGR and PE are not fully elucidated. In this study, we aimed to identify membrane transporters highly associated with transplacental nutrient deficiencies in IUGR/PE. RESULTS: In silico analyses on the identification of differentially expressed nutrient transporters were conducted using seven eligible microarray datasets (from Gene Expression Omnibus), encompassing control and IUGR/PE placental samples...
March 2, 2018: BMC Genomics
Anke Peil-Grun, Corinna Trenker, Konrad Görg, Albrecht Neesse, Jörg Haasenritter, Christian Görg
Value of contrast-enhanced-ultrasound (CEUS) in the evaluation of residual lesions (RL) after therapy in patients with malignant lymphomas (ML) and testicular cancer (TC) with regard to tumor activity. From May 2004-October 2010, in n = 52 patients with ML (n = 34) or TC (n = 18) and RL, B-mode-imaging and CEUS of the RL was performed. In CEUS, differentiation was made between high-enhancement (HE), low-(LE) or no-enhancement (NE) of the RL after therapy. Data were retrospectively evaluated. A positive test result (HE) was found in n = 13 (25%); a negative test result (LE/NE) in n = 39 (75%) patients...
February 27, 2018: Leukemia & Lymphoma
Bianca Kakoschky, Thomas Pleli, Christian Schmithals, Stefan Zeuzem, Bernhard Brüne, Thomas J Vogl, Horst-Werner Korf, Andreas Weigert, Albrecht Piiper
Tumor progression largely depends on the presence of alternatively polarized (M2) tumor-associated macrophages (TAMs), whereas the classical M1-polarized macrophages can promote anti-tumorigenic immune responses. Thus, selective inhibition of M2-TAMs is a desirable anti-cancer approach in highly resistant tumor entities such as hepatocellular carcinoma (HCC) or breast cancer. We here examined whether a peptide that selectively binds to and is internalized by in vitro-differentiated murine M2 macrophages as compared to M1 macrophages, termed M2pep, could be used to selectively target TAMs in HCC and breast carcinoma...
2018: PloS One
Philipp Schommers, Daniel Gillor, Marcus Hentrich, Christoph Wyen, Timo Wolf, Mark Oette, Alexander Zoufaly, Jan-Christian Wasmuth, Johannes R Bogner, Marcus Müller, Stefan Esser, Alisa Schleicher, Bjöern Jensen, Albrecht Stoehr, Georg Behrens, Alexander Schultze, Jan Siehl, Jan Thoden, Ninon Taylor, Christian Hoffmann
Outcome of HIV-infected patients with AIDS-related lymphomas has improved during recent years. However, data on incidence, risk factors, and outcome of relapses in AIDS-related lymphomas after achieving complete remission are still limited. This prospective observational multicenter study includes HIV-infected patients with biopsy- or cytology proven malignant lymphomas since 2005. Data on HIV infection and lymphoma characteristics, treatment and outcome were recorded. For this analysis, AIDS-related lymphomas patients in complete remission were analyzed in terms of their relapse-free survival and potential risk factors for relapses...
February 8, 2018: Haematologica
Georgia Vasileiou, Silvia Vergarajauregui, Sabine Endele, Bernt Popp, Christian Büttner, Arif B Ekici, Marion Gerard, Nuria C Bramswig, Beate Albrecht, Jill Clayton-Smith, Jenny Morton, Susan Tomkins, Karen Low, Astrid Weber, Maren Wenzel, Janine Altmüller, Yun Li, Bernd Wollnik, George Hoganson, Maria-Renée Plona, Megan T Cho, Christian T Thiel, Hermann-Josef Lüdecke, Tim M Strom, Eduardo Calpena, Andrew O M Wilkie, Dagmar Wieczorek, Felix B Engel, André Reis
Variants affecting the function of different subunits of the BAF chromatin-remodelling complex lead to various neurodevelopmental syndromes, including Coffin-Siris syndrome. Furthermore, variants in proteins containing PHD fingers, motifs recognizing specific histone tail modifications, have been associated with several neurological and developmental-delay disorders. Here, we report eight heterozygous de novo variants (one frameshift, two splice site, and five missense) in the gene encoding the BAF complex subunit double plant homeodomain finger 2 (DPF2)...
February 5, 2018: American Journal of Human Genetics
Simone Albrecht, Christian Kaisermayer, Clair Gallagher, Amy Farrell, Anna Lindeberg, Jonathan Bones
Cell viability has a critical impact on product quantity and quality during the biomanufacturing of therapeutic proteins. An advanced understanding of changes in the cellular and conditioned media proteomes upon cell stress and death is therefore needed for improved bioprocess control. Here, a high pH / low pH reversed phase data independent 2D-LC-MSE discovery proteomics platform was applied to study the cellular and conditioned media proteomes of CHO-K1 apoptosis and necrosis models where cell death was induced by staurosporine exposure or aeration shear in a benchtop bioreactor, respectively...
February 10, 2018: Biotechnology and Bioengineering
Georg Apfaltrer, Moritz H Albrecht, U Joseph Schoepf, Taylor M Duguay, Carlo N De Cecco, John W Nance, Domenico De Santis, Paul Apfaltrer, Marwen H Eid, Chelsea D Eason, Zachary M Thompson, Maximilian J Bauer, Akos Varga-Szemes, Brian E Jacobs, Erich Sorantin, Christian Tesche
OBJECTIVES: To investigate diagnostic accuracy and radiation dose of high-pitch CT coronary artery calcium scoring (CACS) with tin filtration (Sn100kVp) versus standard 120kVp high-pitch acquisition. METHODS: 78 patients (58% male, 61.5±9.1 years) were prospectively enrolled. Subjects underwent clinical 120kVp high-pitch CACS using third-generation dual-source CT followed by additional high-pitch Sn100kVp acquisition. Agatston scores, calcium volume scores, Agatston score categories, percentile-based risk categorization and radiation metrics were compared...
February 5, 2018: European Radiology
Doris Leithner, Scherwin Mahmoudi, Julian L Wichmann, Simon S Martin, Lukas Lenga, Moritz H Albrecht, Christian Booz, Christophe T Arendt, Martin Beeres, Tommaso D'Angelo, Boris Bodelle, Thomas J Vogl, Jan-Erik Scholtz
PURPOSE: To investigate the impact of traditional (VMI) and noise-optimized virtual monoenergetic imaging (VMI+) algorithms on quantitative and qualitative image quality, and the assessment of stenosis in carotid and intracranial dual-energy CTA (DE-CTA). MATERIALS AND METHODS: DE-CTA studies of 40 patients performed on a third-generation 192-slice dual-source CT scanner were included in this retrospective study. 120-kVp image-equivalent linearly-blended, VMI and VMI+ series were reconstructed...
February 2018: European Journal of Radiology
Christian Preußer, Lee-Hsueh Hung, Tim Schneider, Silke Schreiner, Martin Hardt, Anna Moebus, Sentot Santoso, Albrecht Bindereif
Circular RNAs (circRNAs) are a novel class of noncoding RNAs present in all eukaryotic cells investigated so far and generated by a special mode of alternative splicing of pre-mRNAs. Thereby, single exons, or multiple adjacent and spliced exons, are released in a circular form. CircRNAs are cell-type specifically expressed, are unusually stable, and can be found in various body fluids such as blood and saliva. Here we analysed circRNAs and the corresponding linear splice isoforms from human platelets, where circRNAs are particularly abundant, compared with other hematopoietic cell types...
2018: Journal of Extracellular Vesicles
Tim Schneider, Silke Schreiner, Christian Preußer, Albrecht Bindereif, Oliver Rossbach
Northern blotting enables the specific detection and characterization of RNA molecules. Recently, circular RNAs (circRNAs) were described as a new class of cell type-specific noncoding RNAs. With the discovery of many novel circRNAs on the basis of high-throughput sequencing and bioinformatics, a solid biochemical approach is required to directly detect and validate specific circRNA species. Here we give a detailed overview of how different Northern blot methods can be employed to validate specific circRNAs...
2018: Methods in Molecular Biology
Angelika Behrens, Anton Kreuzmayr, Hendrik Manner, Herbert Koop, Albrecht Lorenz, Claus Schaefer, Mathais Plauth, Jens-Uwe Jetschmann, Christian von Tirpitz, Marcus Ewald, Michael Sackmann, Wanja Renner, Martin Krüger, Dieter Schwab, Werner Hoffmann, Olaf Engelke, Oliver Pech, Frank Kullmann, Sonja Pampuch, Berthold Lenfers, Uwe Weickert, Dieter Schilling, Stephan Boehm, Susanne Beckebaum, Vito Cicinnati, Joachim F Erckenbrecht, Franz Ludwig Dumoulin, Claus Benz, Thomas Rabenstein, Georg Haltern, Martin Balsliemke, Christian de Mas, Gerhard Kleber, Christian Pehl, Christoph Vogt, Ralf Kiesslich, Wolfgang Fischbach, Irmtraut Koop, Jens Kuehne, Matthias Breidert, Nils Lennart Sass, Andrea May, Christian Friedrich, Ronni Veitt, Rainer Porschen, Mark Ellrichmann, Alexander Arlt, Wolfgang Schmitt, Markus Dollhopf, Werner Schmidbaur, Axel Dignass, Volker Schmitz, J Labenz, Gernot Kaiser, Alexander Krannich, Nico Barteska, Christian Ell
OBJECTIVES: Sedation has been established for GI endoscopic procedures in most countries, but it is also associated with an added risk of complications. Reported complication rates are variable due to different study methodologies and often limited sample size. DESIGNS: Acute sedation-associated complications were prospectively recorded in an electronic endoscopy documentation in 39 study centres between December 2011 and August 2014 (median inclusion period 24 months)...
January 3, 2018: Gut
Nathalie Brouard, Camille Jost, Nadine Matthias, Camille Albrecht, Sébastien Egard, Poojabahen Gandhi, Catherine Strassel, Tomoko Inoue, Daisuke Sugiyama, Paul J Simmons, Christian Gachet, Francois Lanza
The fetal liver is the site of a major expansion of the hematopoietic stem cell (HSC) pool and is also a privileged organ to study megakaryocyte progenitor differentiation. We identified in the mouse fetal liver at day 13.5 a discrete stromal cell population harboring a CD45-TER119-CD31-CD51+VCAM-1+PDGFRα- (V+P-) phenotype that lacked colony-forming unit fibroblast activity and harbored an hepatocyte progenitor signature. This previously undescribed V+P- population efficiently supported megakaryocyte production from mouse bone marrow HSC and human peripheral blood HSC-myeloid progenitors cultured in the presence of limited cytokine concentrations...
September 26, 2017: Blood Advances
Diaa Al Safatli, Albrecht Guenther, Aaron Lawson McLean, Albrecht Waschke, Rolf Kalff, Christian Ewald
Background: Cerebellar hemorrhage is a potentially life-threatening condition and an understanding of the factors influencing outcome is essential for sound clinical decision-making. Methods: We retrospectively evaluated data from 50 consecutive patients who suffered a first spontaneous cerebellar hemorrhage (SCH) from 2005 to 2014, analysing their short-term outcomes and identifying possible clinical, radiological and therapeutic risk factors for poor prognosis and death within 30 days...
2017: Surgical Neurology International
Tjalf Ziemssen, Michael Lang, Björn Tackenberg, Stephan Schmidt, Holger Albrecht, Luisa Klotz, Judith Haas, Christoph Lassek, Jennie Medin, Christian Cornelissen
The population with multiple sclerosis receiving treatment in clinical practice differs from that in randomized controlled trials (RCTs). An assessment of the real-world benefit-risk profile of therapies is needed. This analysis used data from the large, noninterventional, observational German study Post-Authorization Non-interventional German sAfety study of GilEnyA (PANGAEA) to assess prospectively baseline characteristics and outcomes after 12 months (± 90 days) of fingolimod treatment. Patients were divided into 2 cohorts: fingolimod starter [first received fingolimod in PANGAEA (n = 3315)] and previous study [received fingolimod before enrollment in PANGAEA in RCTs (n = 875), some of whom also had baseline data at entry into RCTs (n = 505)]...
December 22, 2017: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
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