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Sofia Steinrücke, Katja Lohmann, Aloysius Domingo, Arndt Rolfs, Tobias Bäumer, Juliane Spiegler, Corinna Hartmann, Alexander Münchau
Recently, exome sequencing has extended our knowledge of genetic causes of developmental delay through identification of de novo, germline mutations in the guanine nucleotide-binding protein, beta 1 (GNB1) in 13 patients with neurodevelopmental disability and a wide range of additional symptoms and signs including hypotonia in 11 and seizures in 10 of the patients. Limb/arm dystonia was found in 2 patients.(1).
October 2016: Neurology. Genetics
Martin Jerie, Zdenek Vojtech, Hana Malikova, Sylva Prochazkova, Zuzana Vackova, Arndt Rolfs
We report a young woman with the clinical picture of Allgrove syndrome in whom neurological symptoms are prominent. It usually presents in the first decade of life with a deficiency of tears, recurrent vomiting and dysphagia due to achalasia, severe hypoglycemic seizures and shock due to adrenal insufficiency. Neurological symptoms such as hyperreflexia, dysarthria, hypernasal speech, ataxia, sensory impairment, muscle weakness, and mental retardation are extremely slow to develop and manifest at a later age...
July 15, 2016: Neuro Endocrinology Letters
Malte Lenders, Julia B Hennermann, Christine Kurschat, Arndt Rolfs, Sima Canaan-Kühl, Claudia Sommer, Nurcan Üçeyler, Christoph Kampmann, Nesrin Karabul, Anne-Katrin Giese, Thomas Duning, Jörg Stypmann, Johannes Krämer, Frank Weidemann, Stefan-Martin Brand, Christoph Wanner, Eva Brand
BACKGROUND: The aim of the present study was to assess manifestations of and applied treatment concepts for females with Fabry disease (FD) according to the current European Fabry Guidelines. METHODS: Between 10/2008 and 12/2014, data from the most recent visit of 261 adult female FD patients from six German Fabry centers were retrospectively analyzed. Clinical presentation and laboratory data, including plasma lyso-Gb3 levels were assessed. RESULTS: Fifty-five percent of females were on enzyme replacement therapy (ERT), according to recent European FD guidelines...
June 29, 2016: Orphanet Journal of Rare Diseases
Christian Tanislav, Dursun Guenduez, Christoph Liebetrau, Anne Kathrin Giese, Sabrina Eichler, Nicole Sieweke, Maria Speth, Timm Bauer, Christian Hamm, Arndt Rolfs
OBJECTIVES: Assessment of the clinical severity of Fabry disease (FD), an X-linked, rare, progressive disorder based on a genetic defect in alpha-galactosidase is challenging, especially regarding cardiac involvement. The aim of the study was to evaluate the diagnostic value of cardiac troponin I (cTnI) in discriminating FD patients with cardiac involvement in a large FD patient cohort. METHODS: cTnI levels were measured with a contemporary sensitive assay in plasma samples taken routinely from FD patients...
2016: PloS One
Markus Moehler, Rolf Mahlberg, Volker Heinemann, Radka Obermannová, Eugen Kubala, Bohuslav Melichar, Arndt Weinmann, Paul Scigalla, Marietta Tesařová, Petr Janda, Fabienne Hédouin-Biville, Wasat Mansoor
BACKGROUND: This phase I study investigated the safety and the maximum tolerated dose (MTD) of the oral fluoropyrimidine S-1 when combined with epirubicin and oxaliplatin (EOS). METHODS: Patients aged ≥18 years with advanced or metastatic solid tumors were enrolled in a 3 + 3 design with S-1 dose escalation (two planned cohorts) performed according to the occurrence of dose-limiting toxicity (DLT). On day 1 of each 21-day cycle, patients received epirubicin 50 mg/m(2) followed by oxaliplatin 130 mg/m(2) (maximum 8 cycles) and then S-1 [20 mg/m(2) (cohort 1) or 25 mg/m(2) (cohort 2), twice daily]: first dose, evening of day 1; subsequent administration on days 2-14, twice daily; last dose, morning of day 15 (unlimited number of S-1 cycles)...
June 2, 2016: Gastric Cancer
Nezih Hekim, Talantbek Batyraliev, Daniel Trujillano, Wei Wang, Collet Dandara, Zarema Karben, Eyüp İlker Saygılı, Zafer Çetin, Deniz Mıhcıoğlu, Serdar Türkmen, Mehmet Ali İkidağ, Mehmet Ali Cüce, Arndt Rolfs
No abstract text is available yet for this article.
May 2016: Omics: a Journal of Integrative Biology
Wen Liu, Julia Beck, Laura C Schmidt, Catrin Roolf, Anahit Pews-Davtyan, Barbara C Rütgen, Sabine Hammer, Saskia Willenbrock, Anett Sekora, Arndt Rolfs, Matthias Beller, Bertram Brenig, Ingo Nolte, Christian Junghanss, Ekkehard Schütz, Hugo Murua Escobar
Protein kinase inhibitors are widely used in chemotherapeutic cancer regimens. Maleimide derivatives such as SB-216763 act as GSK-3 inhibitor targeting cell proliferation, cell death and cell cycle progression.Herein, the two arylindolylmaleimide derivatives PDA-66 and PDA-377 were evaluated as potential chemotherapeutic agents on canine B-cell lymphoma cell lines. Canine lymphoma represents a naturally occurring model closely resembling the human high-grade non-Hodgkin's lymphoma (NHL). PDA-66 showed more pronounced effects on both cell lines...
June 7, 2016: Oncotarget
Karthikeyan Arcot Sadagopan, Renukadevi Kathirvel, Rosanne B Keep, P Sundaresan, Hui Huang, Arndt Rolfs, Kannan Parthiban, P Vijayalakshmi
No abstract text is available yet for this article.
May 13, 2016: Ophthalmic Genetics
Tayseer Elamin Mohamed Elfaki, Kathrin Arndts, Anna Wiszniewsky, Manuel Ritter, Ibtisam A Goreish, Misk El Yemen A Atti El Mekki, Sandra Arriens, Kenneth Pfarr, Rolf Fimmers, Mike Doenhoff, Achim Hoerauf, Laura E Layland
BACKGROUND: In the Sudan, Schistosoma mansoni infections are a major cause of morbidity in school-aged children and infection rates are associated with available clean water sources. During infection, immune responses pass through a Th1 followed by Th2 and Treg phases and patterns can relate to different stages of infection or immunity. METHODOLOGY: This retrospective study evaluated immunoepidemiological aspects in 234 individuals (range 4-85 years old) from Kassala and Khartoum states in 2011...
May 2016: PLoS Neglected Tropical Diseases
Jana Becker, Arndt Rolfs, Nesrin Karabul, Peter Berlit, Markus Kraemer
White matter lesions (WML) in younger patients might be due to a variety of neurological disorders. Fabry disease (FD), an x-linked inherited lysosomal storage disorder, happens to be misdiagnosed as multiple sclerosis (MS). In two middle-aged female patients, presenting bilateral WML, diagnosis of MS turned out to be doubtful. Human genetic analysis presented the Fabry mutation D313Y, in which clinical impact is still unclear. Disease manifestations outside the central nervous system were not detected. Our findings support the suspicion that Fabry mutation D313Y may be involved in neural damage resulting in WML...
March 18, 2016: Multiple Sclerosis: Clinical and Laboratory Research
Katta Mohan Girisha, Anju Shukla, Daniel Trujillano, Gandham SriLakshmi Bhavani, Malavika Hebbar, Rajagopal Kadavigere, Arndt Rolfs
Intraflagellar transport (IFT) is vital for the functioning of primary cilia. Defects in several components of IFT complexes cause a spectrum of ciliopathies with variable involvement of skeleton, brain, eyes, ectoderm and kidneys. We examined a child from a consanguineous family who had short stature, narrow thorax, short hands and feet, post-axial polydactyly of hands, pigmentary retinopathy, small teeth and skeletal dysplasia. The clinical phenotype of the child shows significant overlap with cranioectodermal dysplasia type I (Sensenbrenner syndrome)...
February 16, 2016: Clinical Genetics
Aloysius Domingo, David Amar, Karen Grütz, Lillian V Lee, Raymond Rosales, Norbert Brüggemann, Roland Dominic Jamora, Eva Cutiongco-Dela Paz, Arndt Rolfs, Dirk Dressler, Uwe Walter, Dimitri Krainc, Katja Lohmann, Ron Shamir, Christine Klein, Ana Westenberger
The molecular dysfunction in X-linked dystonia-parkinsonism is not completely understood. Thus far, only noncoding alterations have been found in genetic analyses, located in or nearby the TATA-box binding protein-associated factor 1 (TAF1) gene. Given that this gene is ubiquitously expressed and is a critical component of the cellular transcription machinery, we sought to study differential gene expression in peripheral models by performing microarray-based expression profiling in blood and fibroblasts, and comparing gene expression in affected individuals vs...
August 2016: Cellular and Molecular Life Sciences: CMLS
Matthias Hammon, Peter Dankerl, Rolf Janka, David L Wachter, Arndt Hartmann, Rüdiger Schulz-Wendtland, Michael Uder, Evelyn Wenkel
BACKGROUND: Early detection of loco-regional breast cancer recurrence improves patients' overall survival, as treatment can be initiated or active treatment can be changed. If a suspicious lymph node is diagnosed during a follow-up exam, surgical excision is often performed. The aim of this study was to evaluate the diagnostic performance of the minor invasive ultrasound-guided fine-needle aspiration cytology (FNAC) in sonomorphologically suspicious lymph nodes in breast cancer follow-up...
2015: BMC Women's Health
Iris H I M Hollink, Majid Alfadhel, Anwar S Al-Wakeel, Farough Ababneh, Rolph Pfundt, Stella A de Man, Rami Abou Jamra, Arndt Rolfs, Aida M Bertoli-Avella, Ingrid M B H van de Laar
In 2012 Alazami et al. described a novel syndromic cause of primordial dwarfism with distinct facial features and severe intellectual disability. A homozygous frameshift mutation in LARP7, a chaperone of the noncoding RNA 7SK, was discovered in patients from a single consanguineous Saudi family. To date, only one additional patient has recently been described. To further delineate the phenotype associated with LARP7 mutations, we report two additional cases originating from the Netherlands and Saudi Arabia...
March 2016: Journal of Human Genetics
Daniel Trujillano, Maximilian E R Weiss, Julia Köster, Efstathios B Papachristos, Martin Werber, Krishna Kumar Kandaswamy, Anett Marais, Sabrina Eichler, Jenny Creed, Erol Baysal, Iqbal Yousuf Jaber, Dina Ahmed Mehaney, Chantal Farra, Arndt Rolfs
Genetic testing for cystic fibrosis and CFTR-related disorders mostly relies on laborious molecular tools that use Sanger sequencing to scan for mutations in the CFTR gene. We have explored a more efficient genetic screening strategy based on next-generation sequencing (NGS) of the CFTR gene. We validated this approach in a cohort of 177 patients with previously known CFTR mutations and polymorphisms. Genomic DNA was amplified using the Ion AmpliSeq™ CFTR panel. The DNA libraries were pooled, barcoded, and sequenced using an Ion Torrent PGM sequencer...
September 2015: Molecular Genetics & Genomic Medicine
David A Zeevi, Gheona Altarescu, Ariella Weinberg-Shukron, Fouad Zahdeh, Tama Dinur, Gaya Chicco, Yair Herskovitz, Paul Renbaum, Deborah Elstein, Ephrat Levy-Lahad, Arndt Rolfs, Ari Zimran
BACKGROUND: Noninvasive prenatal testing can be used to accurately detect chromosomal aneuploidies in circulating fetal DNA; however, the necessity of parental haplotype construction is a primary drawback to noninvasive prenatal diagnosis (NIPD) of monogenic disease. Family-specific haplotype assembly is essential for accurate diagnosis of minuscule amounts of circulating cell-free fetal DNA; however, current haplotyping techniques are too time-consuming and laborious to be carried out within the limited time constraints of prenatal testing, hampering practical application of NIPD in the clinic...
October 1, 2015: Journal of Clinical Investigation
Jan Lukas, Simone Scalia, Sabrina Eichler, Anne-Marie Pockrandt, Nicole Dehn, Claudia Cozma, Anne-Katrin Giese, Arndt Rolfs
Fabry disease (FD) is a rare metabolic disorder of glycosphingolipid storage caused by mutations in the GLA gene encoding lysosomal hydrolase α-galactosidase A (α-gal A). Recently, the diagnostic procedure for FD has advanced in several ways, through the development of a specific biomarker (lyso-Gb3) and the implementation of newborn screenings, which acted as a catalyst to augment general awareness of the disease. Heterologous over-expression of α-gal A variants and subsequent in vitro measurement of enzyme activity provided molecular data to elucidate the relationship between mutation, enzyme damage, lyso-Gb3 biomarker levels, and clinical phenotype...
January 2016: Human Mutation
Moritz J Frech, Michael Rabenstein, Katja Bovensiepen, Sebastian Rost, Arndt Rolfs
Niemann-Pick type C1 disease (NPC1) is a neurodegenerative disorder caused by mutations in the NPC1 gene. Actual, no causative treatment for NPC1 is available, although some drugs have been proven to be beneficial to patients, for example, 2-hydroxypropyl-β-cyclodextrin (CDX). In this study, we used the BALB/c_Nctr-Npc1m1N/-J mouse strain to study the effect of CDX, which is described to prolong the life span and to alleviate the pathogenic phenotype. By means of patch clamp recordings, we measured inhibitory postsynaptic currents (IPSCs) of CA1 pyramidal cells of CDX-treated and -untreated animals to elucidate the influence of CDX on the synaptic transmission...
2015: BioResearch Open Access
Marc E Wolf, Ulrike Grittner, Tobias Böttcher, Bo Norrving, Arndt Rolfs, Michael G Hennerici
BACKGROUND: The prospective, multinational European 'Stroke in Young Fabry Patients' (sifap1) study collected 4,467 patients with acute ischemic cerebrovascular events aged 18-55 years. Initially, aetiologic subtyping was performed using the TOAST classification; however, recently the phenotypic ASCO classification was presented and might be more useful to identify stroke aetiologies in young patients with a wide set of different causes. ASCO is a classification system divided in four etiologic categories (Atherosclerosis, Small vessel disease (SVD), Cardiac embolism, Other cause) with different grades of severity (1-3) and aims to characterise patients in a more comprehensive way...
2015: Cerebrovascular Diseases
Claudia Cozma, Sabrina Eichler, Gyula Wittmann, Alba Flores Bonet, Guido Johannes Kramp, Anne-Katrin Giese, Arndt Rolfs
BACKGROUND: Mucopolysaccharidosis IVA (MPS IVA; Morquio A disease) is an autosomal recessive disease caused and characterized by a decreased activity of N-acetylgalactosamine-6-sulfate sulfatase (GALNS), resulting in accumulation of keratan sulfate and chondroitin-6-sulfate in tissues and secondary organ damage. Recently approved enzyme replacement therapy renders the easy and early identification of MPS IVA of out-most importance. METHODOLOGY: We propose a completely new assay for the stable and reproducible detection of GALNS deficiency in dry blood spots (DBS)...
2015: PloS One
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