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https://www.readbyqxmd.com/read/29152458/lysosomal-storage-diseases
#1
REVIEW
Carlos R Ferreira, William A Gahl
Lysosomes are cytoplasmic organelles that contain a variety of different hydrolases. A genetic deficiency in the enzymatic activity of one of these hydrolases will lead to the accumulation of the material meant for lysosomal degradation. Examples include glycogen in the case of Pompe disease, glycosaminoglycans in the case of the mucopolysaccharidoses, glycoproteins in the cases of the oligosaccharidoses, and sphingolipids in the cases of Niemann-Pick disease types A and B, Gaucher disease, Tay-Sachs disease, Krabbe disease, and metachromatic leukodystrophy...
May 25, 2017: Translational Science of Rare Diseases
https://www.readbyqxmd.com/read/29137040/a-multicenter-open-label-phase-iii-study-of-abcertin-in-gaucher-disease
#2
Beom Hee Lee, Ahmed Fathy Abdalla, Jin-Ho Choi, Amal El Beshlawy, Gu-Hwan Kim, Sun Hee Heo, Ahmed Megahed Hassan Megahed, Mona Abdel Latif Elsayed, Tarik El-Sayed Mohammad Barakat, Khaled Mohamed Abd El-Azim Eid, Mona Hassan El-Tagui, Mona Mohamed Hamdy Mahmoud, Ekram Fateen, June-Young Park, Han-Wook Yoo
BACKGROUND: Gaucher disease (GD) is caused by a deficiency in the lysosomal enzyme glucocerebrosidase. Enzyme replacement therapy (ERT) is recommended for clinical improvement. METHODS: The efficacy and safety of a new imiglucerase, Abcertin, were assessed in 7 Egyptian patients with treatment-naïve type 1 GD. Each patient was administered a biweekly 60 U/kg dose of Abcertin for 6 months. The primary endpoint was the change in hemoglobin concentration. The secondary endpoints were changes from baseline in platelet counts, spleen and liver volumes, biomarker levels, skeletal parameters, and bone mineral density...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29090476/demographics-and-patient-characteristics-of-1209-patients-with-gaucher-disease-descriptive-analysis-from-the-gaucher-outcome-survey-gos
#3
Ari Zimran, Nadia Belmatoug, Bruno Bembi, Patrick Deegan, Deborah Elstein, Diego Fernandez-Sasso, Pilar Giraldo, Ozlem Goker-Alpan, Heather Lau, Elena Lukina, Zoya Panahloo, Ida Vanessa D Schwartz
The Gaucher Outcome Survey (GOS) is an international Gaucher disease (GD) registry established in 2010 for patients with a confirmed GD diagnosis, regardless of GD type or treatment status, designed to evaluate the safety and long-term effectiveness of velaglucerase alfa and other GD-related treatments. As of February 25, 2017, 1209 patients had enrolled, the majority from Israel (44.3%) and the US (31.4%). Median age at GOS entry was 40.4 years, 44.1% were male, and 13.3% had undergone a total splenectomy...
November 1, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28851512/reductions-in-glucosylsphingosine-lyso-gb1-in-treatment-na%C3%A3-ve-and-previously-treated-patients-receiving-velaglucerase-alfa-for-type-1-gaucher-disease-data-from-phase-3-clinical-trials
#4
Deborah Elstein, Björn Mellgard, Quinn Dinh, Lan Lan, Yongchang Qiu, Claudia Cozma, Sabrina Eichler, Tobias Böttcher, Ari Zimran
Gaucher disease (GD), an autosomal recessive lipid storage disorder, arises from mutations in the GBA1 (β-glucocerebrosidase) gene, resulting in glucosylceramide accumulation in tissue macrophages. Lyso-Gb1 (glucosylsphingosine, lyso-GL1), a downstream metabolic product of glucosylceramide, has been identified as a promising biomarker for the diagnosis and monitoring of patients with GD. This retrospective, exploratory analysis of data from phase 3 clinical trials of velaglucerase alfa in patients with type 1 GD evaluated the potential of lyso-Gb1 as a specific and sensitive biomarker for GD...
September 2017: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/28569047/transformation-in-pretreatment-manifestations-of-gaucher-disease-type-1-during-two-decades-of-alglucerase-imiglucerase-enzyme-replacement-therapy-in-the-international-collaborative-gaucher-group-icgg-gaucher-registry
#5
MULTICENTER STUDY
Pramod K Mistry, Julie L Batista, Hans C Andersson, Manisha Balwani, Thomas Andrew Burrow, Joel Charrow, Paige Kaplan, Aneal Khan, Priya S Kishnani, Edwin H Kolodny, Barry Rosenbloom, C Ronald Scott, Neal Weinreb
This study tests the hypothesis that the prevalence of severe clinical manifestations in Gaucher disease type 1 (GD1) patients at the time of treatment initiation has changed since alglucerase/imiglucerase enzyme replacement therapy (ERT) was approved in the United States (US) in 1991. US alglucerase/imiglucerase-treated GD1 patients from the International Collaborative Gaucher Group Gaucher Registry clinicaltrials.gov NCT00358943 were stratified by age at ERT initiation (<18, 18 to <50, ≥50 years), era of ERT initiation (1991-1995, 1996-2000, 2001-2005, 2006-2009), and splenectomy status pre-ERT...
September 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28401966/stereodivergent-synthesis-of-right-and-left-handed-iminoxylitol-heterodimers-and-monomers-study-of-their-impact-on-%C3%AE-glucocerebrosidase-activity
#6
Fabien Stauffert, Jenny Serra-Vinardell, Marta Gómez-Grau, Helen Michelakakis, Irene Mavridou, Daniel Grinberg, Lluïsa Vilageliu, Josefina Casas, Anne Bodlenner, Antonio Delgado, Philippe Compain
A library of dimers and heterodimers of both enantiomers of 2-O-alkylated iminoxylitol derivatives has been synthesised and evaluated on β-glucocerebrosidase (GCase), the enzyme responsible for Gaucher disease (GD). Although the objective was to target simultaneously the active site and a secondary binding site of the glucosidase, the (-)-2-iminoxylitol moiety seemed detrimental for imiglucerase inhibition and no significant enhancement was obtained in G202R, N370S and L444P fibroblasts. However, all compounds having at least one (+)-2-O-alkyl iminoxylitol are GCase inhibitors in the nano molar range and are significant GCase activity enhancers in G202R fibroblats, as confirmed by a decrease of glucosylceramide levels and by co-localization studies...
May 3, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28218669/a-review-of-gaucher-disease-pathophysiology-clinical-presentation-and-treatments
#7
REVIEW
Jérôme Stirnemann, Nadia Belmatoug, Fabrice Camou, Christine Serratrice, Roseline Froissart, Catherine Caillaud, Thierry Levade, Leonardo Astudillo, Jacques Serratrice, Anaïs Brassier, Christian Rose, Thierry Billette de Villemeur, Marc G Berger
Gaucher disease (GD, ORPHA355) is a rare, autosomal recessive genetic disorder. It is caused by a deficiency of the lysosomal enzyme, glucocerebrosidase, which leads to an accumulation of its substrate, glucosylceramide, in macrophages. In the general population, its incidence is approximately 1/40,000 to 1/60,000 births, rising to 1/800 in Ashkenazi Jews. The main cause of the cytopenia, splenomegaly, hepatomegaly, and bone lesions associated with the disease is considered to be the infiltration of the bone marrow, spleen, and liver by Gaucher cells...
February 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28207759/investigations-on-therapeutic-glucocerebrosidases-through-paired-detection-with-fluorescent-activity-based-probes
#8
Wouter W Kallemeijn, Saskia Scheij, Sascha Hoogendoorn, Martin D Witte, Daniela Herrera Moro Chao, Cindy P A A van Roomen, Roelof Ottenhoff, Herman S Overkleeft, Rolf G Boot, Johannes M F G Aerts
Deficiency of glucocerebrosidase (GBA) causes Gaucher disease (GD). In the common non-neuronopathic GD type I variant, glucosylceramide accumulates primarily in the lysosomes of visceral macrophages. Supplementing storage cells with lacking enzyme is accomplished via chronic intravenous administration of recombinant GBA containing mannose-terminated N-linked glycans, mediating the selective uptake by macrophages expressing mannose-binding lectin(s). Two recombinant GBA preparations with distinct N-linked glycans are registered in Europe for treatment of type I GD: imiglucerase (Genzyme), contains predominantly Man(3) glycans, and velaglucerase (Shire PLC) Man(9) glycans...
2017: PloS One
https://www.readbyqxmd.com/read/28167660/eliglustat-maintains-long-term-clinical-stability-in-patients-with-gaucher-disease-type-1-stabilized-on-enzyme-therapy
#9
RANDOMIZED CONTROLLED TRIAL
Timothy M Cox, Guillermo Drelichman, Renata Cravo, Manisha Balwani, Thomas Andrew Burrow, Ana Maria Martins, Elena Lukina, Barry Rosenbloom, Ozlem Goker-Alpan, Nora Watman, Amal El-Beshlawy, Priya S Kishnani, Maria Lucia Pedroso, Sebastiaan J M Gaemers, Regina Tayag, M Judith Peterschmitt
In the phase 3 Study of Eliglustat Tartrate (Genz-112638) in Patients With Gaucher Disease Who Have Reached Therapeutic Goals With Enzyme Replacement Therapy (ENCORE), at 1 year, eliglustat was noninferior to imiglucerase enzyme therapy in maintaining stable platelet counts, hemoglobin concentrations, and spleen and liver volumes. After this primary analysis period, patients entered a long-term extension phase in which all received eliglustat. Duration on eliglustat ranged from 2 to 5 years, depending on timing of enrollment (which spanned 2 years), treatment group to which patients were randomized, and whether they lived in the United States when commercial eliglustat became available...
April 27, 2017: Blood
https://www.readbyqxmd.com/read/28111116/patients-with-gaucher-type-1-switching-from-imiglucerase-to-miglustat-therapy
#10
Ebru Canda, Melis Kose, Mehtap Kagnici, Sema Kalkan Ucar, Eser Y Sozmen, Mahmut Coker
No abstract text is available yet for this article.
January 16, 2017: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/28040394/long-term-hematological-visceral-and-growth-outcomes-in-children-with-gaucher-disease-type-3-treated-with-imiglucerase-in-the-international-collaborative-gaucher-group-gaucher-registry
#11
MULTICENTER STUDY
Amal El-Beshlawy, Anna Tylki-Szymanska, Ashok Vellodi, Nadia Belmatoug, Gregory A Grabowski, Edwin H Kolodny, Julie L Batista, Gerald F Cox, Pramod K Mistry
In Gaucher disease (GD), deficiency of lysosomal acid β-glucosidase results in a broad phenotypic spectrum that is classified into three types based on the absence (type 1 [GD1]) or presence and severity of primary central nervous system involvement (type 2 [GD2], the fulminant neuronopathic form, and type 3 [GD3], the milder chronic neuronopathic form). Enzyme replacement therapy (ERT) with imiglucerase ameliorates and prevents hematological and visceral manifestations in GD1, but data in GD3 are limited to small, single-center series...
January 2017: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/28003098/validating-glycoprotein-non-metastatic-melanoma-b-gpnmb-osteoactivin-a-new-biomarker-of-gaucher-disease
#12
Vagishwari Murugesan, Jun Liu, Ruhua Yang, Haiquin Lin, Andrew Lischuk, Gregory Pastores, Xiaokui Zhang, Wei-Lien Chuang, Pramod K Mistry
In the spleens of Gaucher disease mice and patients, there is a striking elevation of expression of glycoprotein non-Metastatic Melanoma B (gpNMB). We conducted a study in a large cohort of patients with Gaucher disease to assess the utility of serum levels of soluble fragment of gpNMB as a biomarker of disease activity. There was >15-fold elevation of gpNMB in sera of untreated patients with Gaucher disease. gpNMB levels correlated with overall disease severity as well as the severity of individual organ compartments: liver, spleen, bone and hematological disease...
December 13, 2016: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/27829541/treatment-patterns-from-647-patients-with-gaucher-disease-an-analysis-from-the-gaucher-outcome-survey
#13
P Deegan, D Fernandez-Sasso, P Giraldo, H Lau, Z Panahloo, A Zimran
The Gaucher Outcome Survey (GOS) is an international disease-specific registry established in 2010 for patients with a confirmed diagnosis of Gaucher disease (GD), regardless of GD type or treatment status. For insight into how GD management varies among countries, we analyzed treatment patterns in GOS. As of October 30, 2015, data on GD-specific treatment (enzyme replacement therapy, substrate reduction therapy, or chemical chaperone therapy) received at any time were available for 647 patients. At analysis, velaglucerase alfa (316/573, 55...
October 20, 2016: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/27821156/successful-switch-from-enzyme-replacement-therapy-to-miglustat-in-an-adult-patient-with-type-1-gaucher-disease-a-case-report
#14
Gaetano Giuffrida, Rita Lombardo, Ernesto Di Francesco, Laura Parrinello, Francesco Di Raimondo, Agata Fiumara
BACKGROUND: Gaucher disease is one of the most common lipid-storage disorders, affecting approximately 1 in 75,000 births. Enzyme replacement therapy with recombinant glucocerebrosidase is currently considered the first-line treatment choice for patients with symptomatic Gaucher disease type 1. Oral substrate reduction therapy is generally considered a second-line treatment option for adult patients with mild to moderate Gaucher disease type 1 who are unable or unwilling to receive lifelong intravenous enzyme infusions...
November 8, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27790078/imiglucerase-in-the-management-of-gaucher-disease-type-1-an-evidence-based-review-of-its-place-in-therapy
#15
REVIEW
Christine Serratrice, Sebastian Carballo, Jacques Serratrice, Jérome Stirnemann
INTRODUCTION: Gaucher disease is the first lysosomal disease to benefit from enzyme replacement therapy, thus serving as model for numerous other lysosomal diseases. Alglucerase was the first glucocerebrosidase purified from placental extracts, and this was then replaced by imiglucerase - a Chinese hamster ovary cell-derived glucocerebrosidase. AIM: The aim was to review the evidence underlying the use of imiglucerase in Gaucher disease type 1. EVIDENCE REVIEW: Data from clinical trials and Gaucher Registries were analyzed...
2016: Core Evidence
https://www.readbyqxmd.com/read/27722092/stability-is-maintained-in-adults-with-gaucher-disease-type-1-switched-from-velaglucerase-alfa-to-eliglustat-or-imiglucerase-a-sub-analysis-of-the-eliglustat-encore-trial
#16
Rebecca Pleat, Timothy M Cox, T Andrew Burrow, Pilar Giraldo, Ozlem Goker-Alpan, Barry E Rosenbloom, Laura R Croal, Lisa H Underhill, Sebastiaan J M Gaemers, M Judith Peterschmitt
Gaucher disease type 1 is an autosomal recessive disorder caused by deficient activity of the lysosomal enzyme acid β-glucosidase resulting in accumulation of glucosylceramide and clinical manifestations of anemia, thrombocytopenia, hepatosplenomegaly, and skeletal disease. The historic standard of care is intravenous recombinant enzyme therapy with imiglucerase. Eliglustat, an oral substrate reduction therapy, is a first-line treatment for adults with Gaucher disease type 1 who have a compatible CYP2D6-metabolizer phenotype (≈ 95% of patients)...
December 2016: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/27574779/evaluation-of-bone-mineral-density-in-patients-with-type-1-gaucher-disease-in-argentina
#17
M S Larroudé, G Aguilar, I Rossi, G Drelichman, N Fernandez Escobar, N Basack, M Slago, A Schenone, A Fynn, M F Cuello, R Fernandez, A Ruiz, P Reichel, N Guelbert, H Robledo, N Watman, M Bolesina, G Elena, S E Veber, G Pujal, G Galvan, J J Chain, A Arizo, J Bietti, M Aznar, M Dragosky, M Marquez, L Feldman, K Muller, S Zirone, G Buchovsky, V Lanza, I Fernandez, R Jaureguiberry, M A Barbieri, A Maro, G Zarate, G Fernandez, M Rapetti, A Degano, G Kantor, A Albina, M Alvarez Bollea, H Arrocena, V Bacciedoni, F Del Rio
The purpose of this study was to evaluate the frequency of osteoporosis (OP) in patients with Gaucher disease (GD) in Argentina. GD patients from 28 centers were consecutively included from April 2012 to 2014. Bone mineral density (BMD) was determined by dual X-ray absorptiometry in the lumbar spine and the femoral neck or the total proximal femur for patients ≥20 yr of age, and by whole-body scan in the lumbar spine in patients <20 yr of age. In children, mineral density was calculated using the chronological age and Z height...
October 2016: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/27559188/enzyme-replacement-or-substrate-reduction-a-review-of-gaucher-disease-treatment-options
#18
Alison Van Rossum, Megan Holsopple
BACKGROUND: Gaucher disease is a rare lysosomal storage disease resulting from a deficiency or reduced activity in the acid β-glucocosidase enzyme. Only 1 treatment option was available for 15 years, but several new treatment options have come to market since 2003. OBJECTIVE: The article will detail the pathophysiology and review current therapies in the literature for all 3 major clinical types of Gaucher disease, with a focus on considerations for selecting therapy in type 1 disease...
July 2016: Hospital Pharmacy
https://www.readbyqxmd.com/read/27408819/clinical-response-to-eliglustat-in-treatment-na%C3%A3-ve-patients-with-gaucher-disease-type-1-post-hoc-comparison-to-imiglucerase-treated-patients-enrolled-in-the-international-collaborative-gaucher-group-gaucher-registry
#19
Jennifer Ibrahim, Lisa H Underhill, John S Taylor, Jennifer Angell, M Judith Peterschmitt
Eliglustat is a recently approved oral therapy in the United States and Europe for adults with Gaucher disease type 1 who are CYP2D6 extensive, intermediate, or poor metabolizers (> 90% of patients) that has been shown to decrease spleen and liver volume and increase hemoglobin concentrations and platelet counts in untreated adults with Gaucher disease type 1 and maintain these parameters in patients previously stabilized on enzyme replacement therapy. In a post-hoc analysis, we compared the results of eliglustat treatment in treatment-naïve patients in two clinical studies with the results of imiglucerase treatment among a cohort of treatment-naïve patients with comparable baseline hematologic and visceral parameters in the International Collaborative Gaucher Group Gaucher Registry...
September 2016: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/27334896/rare-case-of-hepatic-gaucheroma-in-a-child-on-enzyme-replacement-therapy
#20
Sophy Korula, Penny Owens, Amanda Charlton, Kaustuv Bhattacharya
BACKGROUND: We present a 6 year old boy with type I Gaucher treated from 16 months with ERT, developing focal Gaucheroma in the liver at 3.5 years. CASE: The subject presented at 13 months of age with anaemia, thrombocytopenia and hepatosplenomegaly. Gaucher disease was confirmed by leucocyte enzyme assay. A homozygous change: c.1193G>A (p.Arg398Gln) in the GBA gene was identified. He had normal neurology with normal saccades. Imiglucerase was administered at 60 IU/kg/fortnight from 15 months as per Australian regulations with good clinical response...
2017: JIMD Reports
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