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Lysosomal storage diseases

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https://www.readbyqxmd.com/read/29330335/fabry-disease-prevalence-of-affected-males-and-heterozygotes-with-pathogenic-gla-mutations-identified-by-screening-renal-cardiac-and-stroke-clinics-1995-2017
#1
Dana Doheny, Ram Srinivasan, Silvere Pagant, Brenden Chen, Makiko Yasuda, Robert J Desnick
BACKGROUND: Fabry Disease (FD), an X linked lysosomal storage disease due to pathogenic α-galactosidase A (GLA) mutations, results in two major subtypes, the early-onset Type 1 'Classic' and the Type 2 'Later-Onset' phenotypes. To identify previously unrecognised patients, investigators screened cardiac, renal and stroke clinics by enzyme assays. However, some screening studies did not perform confirmatory GLA mutation analyses, and many included recently recognised 'benign/likely-benign' variants, thereby inflating prevalence estimates...
January 12, 2018: Journal of Medical Genetics
https://www.readbyqxmd.com/read/29326878/ten-year-long-enzyme-replacement-therapy-shows-a-poor-effect-in-alleviating-giant-leg-ulcers-in-a-male-with-fabry-disease
#2
Jun Okada, Mohammad Arif Hossain, Chen Wu, Takashi Miyajima, Hiroko Yanagisawa, Keiko Akiyama, Yoshikatsu Eto
Fabry disease is an X-linked lysosomal storage disorder caused by a deficiency of α-galactosidase A (α-gal A), leading to the progressive accumulation of glycosphingolipids. Classical hemizygous males usually present symptoms, including pain and paresthesia in the extremities, angiokeratoma, hypo- or anhidrosis, abdominal pain, cornea verticillata, early stroke, tinnitus, and/or hearing loss, during early childhood or adolescence. Moreover, proteinuria, renal impairment, and cardiac hypertrophy can appear with age...
March 2018: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/29326877/natural-history-of-morquio-a-patient-with-tracheal-obstruction-from-birth-to-death
#3
Caitlin Doherty, Lauren W Averill, Mary Theroux, William G Mackenzie, Christian Pizarro, Robert W Mason, Shunji Tomatsu
Morquio A syndrome (mucopolysaccharidosis IVA, MPS IVA) is a lysosomal storage disease caused by a deficiency of N-acetylgalactosamine-6-sulfate sulfatase, resulting in systemic accumulation of the partially degraded glycosaminoglycans (GAGs), keratan sulfate and chondroitin-6-sulfate. The accumulation of these GAGs leads to distinguishing features as skeletal dysplasia with disproportionate dwarfism, short neck, kyphoscoliosis, pectus carinatum, tracheal obstruction, coxa valga, genu valgum, and joint laxity...
March 2018: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/29325092/intravenous-administration-of-scaav9-hexb-normalizes-lifespan-and-prevents-pathology-in-sandhoff-disease-mice
#4
Natalia Niemir, Laura Rouvière, Aurore Besse, Marie T Vanier, Jasmin Dmytrus, Thibaut Marais, Stéphanie Astord, Jean-Philippe Puech, Ganna Panasyuk, Jonathan D Cooper, Martine Barkats, Catherine Caillaud
Sandhoff disease (SD) is a rare inherited disorder caused by a deficiency of β-hexosaminidase activity which is fatal because no effective treatment is available. A mouse model of Hexb deficiency reproduces the key pathognomonic features of SD patients with severe ubiquitous lysosomal dysfunction, GM2 accumulation, neuroinflammation and neurodegeneration, culminating in death at 4 months. Here, we show that a single intravenous neonatal administration of a self-complementary adeno-associated virus 9 vector (scAAV9) expressing the Hexb cDNA in SD mice is safe and sufficient to prevent disease development...
January 8, 2018: Human Molecular Genetics
https://www.readbyqxmd.com/read/29325023/the-extending-spectrum-of-npc1-related-human-disorders-from-niemann-pick-c1-disease-to-obesity
#5
Amel Lamri, Marie Pigeyre, William S Garver, David Meyre
The Niemann-Pick C1 (NPC1) protein regulates the transport of cholesterol and fatty acids from late endosomes / lysosomes and has a central role in maintaining lipid homeostasis. NPC1 loss-of-function mutations in humans cause NPC1 disease, a rare autosomal-recessive lipid-storage disorder characterized by progressive and lethal neurodegeneration, liver and lung failure, due to cholesterol infiltration. In humans, genome wide association studies (GWAS) and post-GWAS reports highlight the implication of common variants in NPC1 in adult-onset obesity, body fat mass, and type 2 diabetes...
January 9, 2018: Endocrine Reviews
https://www.readbyqxmd.com/read/29323117/impaired-autophagy-bridges-lysosomal-storage-disease-and-epithelial-dysfunction-in-the-kidney
#6
Beatrice Paola Festa, Zhiyong Chen, Marine Berquez, Huguette Debaix, Natsuko Tokonami, Jenny Ann Prange, Glenn van de Hoek, Cremonesi Alessio, Andrea Raimondi, Nathalie Nevo, Rachel H Giles, Olivier Devuyst, Alessandro Luciani
The endolysosomal system sustains the reabsorptive activity of specialized epithelial cells. Lysosomal storage diseases such as nephropathic cystinosis cause a major dysfunction of epithelial cells lining the kidney tubule, resulting in massive losses of vital solutes in the urine. The mechanisms linking lysosomal defects and epithelial dysfunction remain unknown, preventing the development of disease-modifying therapies. Here we demonstrate, by combining genetic and pharmacologic approaches, that lysosomal dysfunction in cystinosis results in defective autophagy-mediated clearance of damaged mitochondria...
January 11, 2018: Nature Communications
https://www.readbyqxmd.com/read/29317695/alterations-in-the-properties-of-the-cell-membrane-due-to-glycosphingolipid-accumulation-in-a-model-of-gaucher-disease
#7
Gyula Batta, Lilla Soltész, Tamás Kovács, Tamás Bozó, Zoltán Mészár, Miklós Kellermayer, János Szöllősi, Peter Nagy
Gaucher disease is a lysosomal storage disease characterized by the malfunction of glucocerebrosidase resulting in the accumulation of glucosylceramide and other sphingolipids in certain cells. Although the disease symptoms are usually attributed to the storage of undigested substrate in lysosomes, here we show that glycosphingolipids accumulating in the plasma membrane cause profound changes in the properties of the membrane. The fluidity of the sphingolipid-enriched membrane decreased accompanied by the enlargement of raft-like ordered membrane domains...
January 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29313356/sub-cellular-nanorheology-reveals-lysosomal-viscosity-as-a-reporter-for-lysosomal-storage-diseases
#8
John Devany, Kasturi Chakraborty, Yamuna Krishnan
We describe a new method to measure viscosity within sub-cellular organelles of a living cell using nanorheology. We demonstrate proof of concept by measuring viscosity in lysosomes in multiple cell types and disease models. The lysosome is an organelle, which is responsible for the breakdown of complex biomolecules. When different lysosomal proteins are defective, they are unable to breakdown specific biological substrates, that get stored within the lysosome, causing about 70 fatal diseases called lysosomal storage disorders (LSDs)...
January 9, 2018: Nano Letters
https://www.readbyqxmd.com/read/29310675/failure-to-shorten-the-diagnostic-delay-in-two-ultra-orphan-diseases-mucopolysaccharidosis-types-i-and-iii-potential-causes-and-implications
#9
Gé-Ann Kuiper, Olga L M Meijer, Eveline J Langereis, Frits A Wijburg
BACKGROUND: Rare diseases are often un- or misdiagnosed for extended periods, resulting in a long diagnostic delay that may significantly add to the burden of the disease. An early diagnosis is particularly essential if a disease-modifying treatment is available. The purpose of this study was to assess the extent of the diagnostic delay in the two ultra-rare diseases, i.e., mucopolysaccharidosis I (MPS I) and III (MPS III), both of which are lysosomal storage disorders with different phenotypic severities (MPS 1 is characterized by the severe Hurler and the more attenuated non-Hurler phenotypes, MPS III is characterized by the severe rapidly progressing (RP) phenotype and more attenuated slowly progressing (SP) phenotype)...
January 8, 2018: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/29306436/activity-based-probes-for-glycosidases-profiling-and-other-applications
#10
Chi-Lin Kuo, Eline van Meel, Kassiani Kytidou, Wouter Willem Kallemeijn, Martin Witte, Herman Stephen Overkleeft, Marta Elena Artola, Johannes Maria Aerts
Glycosidases mediate the fragmentation of glycoconjugates in the body, including the vital recycling of endogenous molecules. Several inherited diseases in man concern deficiencies in lysosomal glycosidases degrading glycosphingolipids. Prominent is Gaucher disease caused by an impaired lysosomal β-glucosidase (glucocerebrosidase, GBA) and resulting in pathological lysosomal storage of glucosylceramide (glucocerebroside) in tissue macrophages. GBA is a retaining glucosidase with a characteristic glycosyl-enzyme intermediate formed during catalysis...
2018: Methods in Enzymology
https://www.readbyqxmd.com/read/29306435/fluorescence-quenched-substrates-for-quantitative-live-cell-imaging-of-glucocerebrosidase-activity
#11
Roger A Ashmus, David L Shen, David J Vocadlo
Glucocerebrosidase (GCase) is a lysosomal glycoside hydrolase that cleaves the glycolipid glucosylceramide (GlcCer). Deficiencies of this enzyme lead to accumulation of GlcCer and the development of the lysosomal storage disease known as Gaucher's disease. Recently, loss-of-function mutations in the GBA1 gene that encodes GCase have been linked to Parkinson's disease. Currently pursued therapeutic strategies to increase GCase involve enzyme replacement therapy, chemical chaperone therapy, and GCase activators...
2018: Methods in Enzymology
https://www.readbyqxmd.com/read/29305919/pathological-role-of-lipid-interaction-with-%C3%AE-synuclein-in-parkinson-s-disease
#12
REVIEW
Mari Suzuki, Kazunori Sango, Keiji Wada, Yoshitaka Nagai
Alpha-synuclein (αSyn) plays a central role in the pathogenesis of Parkinson's disease (PD) and dementia with Lewy bodies (DLB). In sporadic PD and DLB, normally harmless αSyn proteins without any mutations might gain toxic functions by unknown mechanisms. Thus, it is important to elucidate the factors promoting the toxic conversion of αSyn, towards understanding the pathogenesis of and developing disease-modifying therapies for PD and DLB. Accumulating biophysical and biochemical studies have demonstrated that αSyn interacts with lipid membrane, and the interaction influences αSyn oligomerization and aggregation...
January 3, 2018: Neurochemistry International
https://www.readbyqxmd.com/read/29302509/a-novel-homozygous-lipa-mutation-in-a-korean-child-with-lysosomal-acid-lipase-deficiency
#13
Kwang Yeon Kim, Ju Whi Kim, Kyung Jae Lee, Eunhyang Park, Gyeong Hoon Kang, Young Hun Choi, Woo Sun Kim, Jung Min Ko, Jin Soo Moon, Jae Sung Ko
Patients with lysosomal acid lipase (LAL) deficiency and glycogen storage disease (GSD) demonstrated hepatomegaly and dyslipidemia. In our case, a 6-year-old boy presented with hepatosplenomegaly. At 3 years of age, GSD had been diagnosed by liver biopsy at another hospital. He showed elevated serum liver enzymes and dyslipidemia. Liver biopsy revealed diffuse microvesicular fatty changes in hepatocytes, septal fibrosis and foamy macrophages. Ultrastructural examination demonstrated numerous lysosomes that contained lipid material and intracytoplasmic cholesterol clefts...
December 2017: Pediatric Gastroenterology, Hepatology & Nutrition
https://www.readbyqxmd.com/read/29300381/a-homozygous-founder-missense-variant-in-arylsulfatase-g-abolishes-its-enzymatic-activity-causing-atypical-usher-syndrome-in-humans
#14
Samer Khateb, Björn Kowalewski, Nicola Bedoni, Markus Damme, Netta Pollack, Ann Saada, Alexey Obolensky, Tamar Ben-Yosef, Menachem Gross, Thomas Dierks, Eyal Banin, Carlo Rivolta, Dror Sharon
PurposeWe aimed to identify the cause of disease in patients suffering from a distinctive, atypical form of Usher syndrome.MethodsWhole-exome and genome sequencing were performed in five patients from three families of Yemenite Jewish origin, suffering from distinctive retinal degeneration phenotype and sensorineural hearing loss. Functional analysis of the wild-type and mutant proteins was performed in human fibrosarcoma cells.ResultsWe identified a homozygous founder missense variant, c.133G>T (p.D45Y) in arylsulfatase G (ARSG)...
January 4, 2018: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/29296871/quality-of-life-of-hurler-syndrome-patients-after-successful-hematopoietic-stem-cell-transplantation
#15
Mieke Aldenhoven, Brigitte T A van den Broek, Robert F Wynn, Anne O'Meara, Paul Veys, Attilio Rovelli, Simon A Jones, Rossella Parini, Peter M van Hasselt, Marleen Renard, Victoria Bordon, Tom J de Koning, Jaap Jan Boelens
Hurler syndrome (HS) is a lysosomal storage disease characterized by multisystem morbidity and death in early childhood. Hematopoietic stem cell transplantation (HSCT) results in long-term survival, although with significant residual disease burden. How this residual disease affects the health-related quality of life is unknown. Therefore, we conducted a multicenter cohort study on functional and psychosocial health and compared the outcomes to normative data using the Child Health Questionnaire and Pediatric Outcomes Data Collection Instrument...
November 14, 2017: Blood Advances
https://www.readbyqxmd.com/read/29290526/rapid-screening-for-lipid-storage-disorders-using-biochemical-markers-expert-center-data-and-review-of-the-literature
#16
M Voorink-Moret, S M I Goorden, A B P van Kuilenburg, F A Wijburg, J M M Ghauharali-van der Vlugt, F S Beers-Stet, A Zoetekouw, W Kulik, C E M Hollak, F M Vaz
BACKGROUND: In patients suspected of a lipid storage disorder (sphingolipidoses, lipidoses), confirmation of the diagnosis relies predominantly on the measurement of specific enzymatic activities and genetic studies. New UPLC-MS/MS methods have been developed to measure lysosphingolipids and oxysterols, which, combined with chitotriosidase activity may represent a rapid first tier screening for lipid storage disorders. MATERIAL AND METHODS: A lysosphingolipid panel consisting of lysoglobotriaosylceramide (LysoGb3), lysohexosylceramide (LysoHexCer: both lysoglucosylceramide and lysogalactosylceramide), lysosphingomyelin (LysoSM) and its carboxylated analogue lysosphingomyelin-509 (LysoSM-509) was measured in control subjects and plasma samples of predominantly untreated patients affected with lipid storage disorders (n=74)...
December 22, 2017: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/29289480/chaperone-effect-of-sulfated-disaccharide-from-heparin-on-mutant-iduronate-2-sulfatase-in-mucopolysaccharidosis-type-ii
#17
Hiroo Hoshina, Yohta Shimada, Takashi Higuchi, Hiroshi Kobayashi, Hiroyuki Ida, Toya Ohashi
Small molecules called pharmacological chaperones have been shown to improve the stability, intracellular localization, and function of mutated enzymes in several lysosomal storage diseases, and proposed as promising therapeutic agents for them. However, a chaperone compound for mucopolysaccharidosis type II (MPS II), which is an X-linked lysosomal storage disorder characterized by a deficiency of iduronate-2-sulfatase (IDS) and the accumulation of glycosaminoglycans (GAGs), has still not been developed. Here we focused on the Δ-unsaturated 2-sulfouronic acid-N-sulfoglucosamine (D2S0), which is a sulfated disaccharide derived from heparin, as a candidate compound for a pharmacological chaperone for MPS II, and analyzed the chaperone effect of the saccharide on IDS by using recombinant protein and cells expressing mutated enzyme...
December 13, 2017: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/29286471/in-vitro-enzyme-measurement-to-test-pharmacological-chaperone-responsiveness-in-fabry-and-pompe-disease
#18
Jan Lukas, Anne-Marie Knospe, Susanne Seemann, Valentina Citro, Maria V Cubellis, Arndt Rolfs
The use of personalized medicine to treat rare monogenic diseases like lysosomal storage disorders (LSDs) is challenged by complex clinical trial designs, high costs, and low patient numbers. Hundreds of mutant alleles are implicated in most of the LSDs. The diseases are typically classified into 2 to 3 different clinical types according to severity. Moreover, molecular characterization of the genotype can help predict clinical outcomes and inform patient care. Therefore, we developed a simple cell culture assay based on HEK293H cells heterologously over-expressing the mutations identified in Fabry and Pompe disease...
December 20, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29275451/voice-alterations-in-patients-with-morquio-a-syndrome
#19
Krzysztof Szklanny, Ryszard Gubrynowicz, Anna Tylki-Szymańska
Morquio A syndrome, or mucopolysaccharidosis (MPS IV A), is an inherited lysosomal storage disorder which belongs to the group of mucopolysaccharidoses (MPSs). It is caused by N-acetylgalactosamine-6-sulfatase (GALNS) activity deficiency, which results in impaired degradation of glycosaminoglycans (GAGs), including keratan sulfate (KS) and chondroitin-6-sulfate (CS). These compounds infiltrate and disrupt the architecture of the extracellular matrix, compromising the integrity of the connective tissue. Patients with Morquio A have also been noted for exhibiting abnormalities of the larynx and vocal tract...
December 23, 2017: Journal of Applied Genetics
https://www.readbyqxmd.com/read/29260317/effects-of-long-term-cysteamine-treatment-in-patients-with-cystinosis
#20
REVIEW
Gema Ariceta, Vincenzo Giordano, Fernando Santos
Cystinosis is a rare autosomal-recessive lysosomal storage disease with high morbidity and mortality. It is caused by mutations in the CTNS gene that encodes the cystine transporter, cystinosin, which leads to lysosomal cystine accumulation. Patients with infantile nephropathic cystinosis, the most common and most severe clinical form of cystinosis, commonly present with renal Fanconi syndrome by 6-12 months of age, and without specific treatment, almost all will develop end-stage renal disease (ESRD) by 10-12 years of age...
December 19, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
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