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16:52 EST 12th November 2018 | BioPortfolio

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Showing "Lysosomal Storage Disorder Pipeline Review 2015" PubMed Articles 1–25 of 25,000+

Screening for lysosomal acid lipase deficiency: A retrospective data mining study and evaluation of screening criteria.

Lysosomal acid lipase deficiency (LAL-D) is a lysosomal storage disorder. In severe cases, it can cause life-threatening organ failure due to lipid substrates accumulation. However, mild phenotypes of this disorder are increasingly recognized. The aim of this study is to determine the number of missed LAL-D patients in a large pediatric hospital population.

Neuroimaging Findings in Lysosomal Disorders: 2018 Update.

Lysosomal storage disorders are a heterogeneous group of genetic diseases characterized by defective function in one of the lysosomal enzymes. In this review paper, we describe neuroradiological findings and clinical characteristics of neuronopathic lysosomal disorders with a focus on differential diagnosis. New insights regarding pathogenesis and therapeutic perspectives are also briefly discussed.

A Diagnostic Algorithm for Cholesteryl Ester Storage Disease: Clinical presentation in 19 Polish Patients.

Lysosomal acid lipase deficiency (LAL-D) is a rare autosomal recessive lysosomal lipid storage disorder that results in an early-onset, severe and lethal phenotype, known as Wolman disease, or a late-onset, attenuated phenotype, cholesteryl ester storage disease (CESD).The aim of our study was to describe the clinical presentation of CESD, focusing on the first noted abnormalities in patients. A diagnostic algorithm of CESD was also proposed.

Lysosome biogenesis in health and disease.

This review focuses on the pathways that regulate lysosome biogenesis and that are implicated in numerous degenerative storage diseases, including lysosomal storage disorders and late-onset neurodegenerative diseases. Lysosomal proteins are synthesized in the endoplasmic reticulum and trafficked to the endolysosomal system through the secretory route. Several receptors have been characterized that execute post-Golgi trafficking of lysosomal proteins. Some of them recognize their cargo proteins based on spec...

Sphingolipids and neuronal degeneration in lysosomal storage disorders.

Ceramide, sphingomyelin, and glycosphingolipids (both neutral and acidic) are characterized by the presence in the lipid moiety of an aliphatic base known as sphingosine. Altogether, they are sphingolipids particularly abundant in neuronal plasma membranes, where, via interactions with the other membrane lipids and membrane proteins, they play a specific role in modulating the cell signaling processes. The metabolic pathways determining the plasma membrane sphingolipid composition are thus the key point for...

Fundamentals of CNS energy metabolism and alterations in lysosomal storage diseases.

The brain has a very high requirement for energy. Adult brain relies on glucose as an energy substrate, whereas developing brain can utilize alternative substrates as well as glucose for energy and for the biosynthesis of lipids and proteins required for brain development. Metabolism provides the energy required to support all cellular functions and brain development and building blocks for macromolecules. Lysosomes are organelles involved in breakdown of biological compounds including proteins and complex ...

The intersection of lysosomal and endoplasmic reticulum calcium with autophagy defects in lysosomal diseases.

The lysosomal storage disorders (LSDs) encompass a group of more than 50 inherited diseases characterized by the accumulation of lysosomal substrates. Two-thirds of patients experience significant neurological symptoms, but the mechanisms of neurodegeneration are not well understood. Interestingly, a wide range of LSDs show defects in both autophagy and Ca homeostasis, which is notable as Ca is a key regulator of autophagy. The crosstalk between these pathways in the context of LSD pathogenesis is not well ...

Progranulin associates with hexosaminidase A and ameliorates GM2 ganglioside accumulation and lysosomal storage in Tay-Sachs disease.

Tay-Sachs disease (TSD) is a lethal lysosomal storage disease (LSD) caused by mutations in the HexA gene, which can lead to deficiency of β-hexosaminidase A (HexA) activity and consequent accumulation of its substrate, GM2 ganglioside. Recent reports that progranulin (PGRN) functions as a chaperone of lysosomal enzymes and its deficiency is associated with LSDs, including Gaucher disease and neuronal ceroid lipofuscinosis, prompted us to screen the effects of recombinant PGRN on lysosomal storage in fibrob...

Is Parkinson's disease a lysosomal disorder?

Common forms of Parkinson's disease have long been described as idiopathic, with no single penetrant genetic factor capable of influencing disease aetiology. Recent genetic studies indicate a clear association of variants within several lysosomal genes as risk factors for idiopathic Parkinson's disease. The emergence of novel variants suggest that the aetiology of idiopathic Parkinson's disease may be explained by the interaction of several partially penetrant mutations that, while seemingly complex, all ap...

Utility of amniotic fluid chitotriosidase in the prenatal diagnosis of lysosomal storage disorders.

Plasma chitotriosidase is a documented biomarker for certain lysosomal storage disorders. However, its clinical utility for prenatal samples is not elucidated yet.

Early prenatal diagnosis of lysosomal storage disorders by enzymatic and molecular analysis.

To report the 4-year experience of early prenatal diagnosis of lysosomal storage disorders (LSDs) at a center in mainland China.

Defective collagen proteostasis and matrix formation in the pathogenesis of lysosomal storage disorders.

The lysosome is a catabolic organelle devoted to the degradation of cellular components, such as protein complexes and whole or portion of organelles that reach the lysosomes through (macro)autophagy. The lysosomes also function as signaling organelles by controlling the activity of key metabolic kinases, such as the mechanistic target of Rapamycin complex 1 (mTORC1). Lysosome dysfunction has dramatic consequences on cellular homeostasis and cause lysosomal storage disorders (LSDs). Here we review the recen...

International working group identifies need for newborn screening for mucopolysaccharidosis type I but states that existing hurdles must be overcome.

Mucopolysaccharidosis type I is a lysosomal storage disorder that can result in significant disease burden, disability and premature death, if left untreated. The aim of this review was to elaborate on the diagnosis of mucopolysaccharidosis type I and the pros and cons of newborn screening.

Tuning protein folding in lysosomal storage diseases: the chemistry behind pharmacological chaperones.

Misfolding of proteins is the basis of several proteinopathies. Chemical and pharmacological chaperones are small molecules capable of inducing the correct conformation of proteins, thus being of interest for human therapeutics. The most recent developments in medicinal chemistry and in the drug development of pharmacological chaperones are discussed, with focus on lysosomal storage diseases.

Pharmacotherapy of Gaucher Disease: Current and Future Options.

The clinical manifestations of Gaucher disease, a rare genetic lysosomal storage disorder, are debilitating, and the neuronopathic forms of the disease are fatal. The authors describe the current and investigational therapies for treatment.

The lysosomal protein arylsulfatase B is a key enzyme involved in skeletal turnover.

Skeletal pathologies are frequently observed in lysosomal storage disorders, yet the relevance of specific lysosomal enzymes in bone remodeling cell types is poorly defined. Two lysosomal enzymes, i.e. Ctsk (cathepsin K) and Acp5 (also known as tartrate-resistant acid phosphatase), are long known as molecular marker proteins of differentiated osteoclasts. However, whereas the cysteine protease Ctsk is directly involved in the degradation of bone matrix proteins, the molecular function of Acp5 in osteoclas...

Neonatal screening for four lysosomal storage diseases with a digital microfluidics platform: Initial results in Brazil.

We describe the initial results of a neonatal screening program for four lysosomal storage diseases (MPS I, Pompe, Gaucher and Fabry) using the digital microfluidics methodology. The method successfully identified patients previously diagnosed with these diseases and was used to test dried blood spot samples obtained from 10,527 newborns aged 2 to 14 days. The digital microfluidic technology shows potential for a simple, rapid and high-throughput screening for these four diseases in a standard neonatal scre...

First case of genetically confirmed CLN3 disease in Chinese with cDNA sequencing revealing pathogenicity of a novel splice site variant.

CLN3 disease is one of the most common hereditary progressive neurodegenerative diseases in Caucasians, but in the Asian population this lysosomal storage disorder is uncommon and lacks clinical and genetic characterisation.

Real Age: Red Blood Cell Aging During Storage.

During cold storage, some red blood cell (RBC) units age more rapidly than others. Yet, the FDA has set a uniform storage limit of 42 days. Objectives of this review are to present evidence for an RBC storage lesion and suggest that functional measures of stored RBC quality-which we call real age-may be more appropriate than calendar age.

Estimated Prevalence of Opioid Use Disorder in Massachusetts, 2011-2015: A Capture-Recapture Analysis.

To estimate the annual prevalence of opioid use disorder (OUD) in Massachusetts from 2011 to 2015.

Lysosomal N-acetyltransferase interacts with ALIX and is detected in extracellular vesicles.

Heparan acetyl CoA: α-glucosaminide N-acetyltransferase (HGSNAT) is a lysosomal multi-pass transmembrane protein whose deficiency may lead to an accumulation of heparan sulphate and the neurodegenerative lysosomal storage disorder mucopolysaccharidosis (MPS) IIIC. In this study, HGSNAT activity was detected in extracellular vesicles isolated from both human urine and culture medium conditioned with HEK 293T cells. We also demonstrate that HGSNAT co-immunoprecipitates with antibodies to ALIX, which is assoc...

Lysosomal membrane permeabilization and cell death.

Lysosomes are membrane-enclosed organelles that mediate the intracellular degradation of macromolecules. They play an essential role in calcium regulation and have emerged as key signaling hubs in controlling the nutrient response. Maintaining lysosomal integrity and function is therefore crucial for cellular homeostasis. Different forms of stress can induce lysosomal membrane permeabilization (LMP), resulting in the translocation to the cytoplasm of intralysosomal components, such as cathepsins, inducing l...

Exploring genetic modifiers of Gaucher disease: The next horizon.

Gaucher disease is an autosomal recessive lysosomal storage disorder resulting from mutations in the gene GBA1 that lead to a deficiency in the enzyme glucocerebrosidase. Accumulation of the enzyme's substrates, glucosylceramide and glucosylsphingosine, result in symptoms ranging from skeletal and visceral involvement to neurological manifestations. Nonetheless, there is significant variability in clinical presentations amongst patients, with limited correlation between genotype and phenotype. Contributing ...

Hypogammaglobulinemia and imaging features in a patient with infantile free sialic acid storage disease (ISSD) and a novel mutation in the SLC17A5 gene.

Background Infantile free sialic acid storage disease (ISSD) is a severe multisystemic disorder characterized by the accumulation of free sialic acid in lysosomes. Case presentation The patient presented prenatally with fetal ascites and large scrotal hernias, without pleural or pericardial effusion. During the infantile period, he was diagnosed with permanent isolated immunoglobulin G (IgG) hypogammaglobulinemia, which thus far has rarely been associated with ISSD. The analysis of the SLC17A5 gene revealed...

Properties, metabolisms and roles of sulfogalactosylglycerolipid in male reproduction.

Sulfogalactosylglycerolipid (SGG, aka seminolipid) is selectively synthesized in high amounts in mammalian testicular germ cells (TGCs). SGG is an ordered lipid and directly involved in cell adhesion. SGG is indispensable for spermatogenesis, a process that greatly depends on interaction between Sertoli cells and TGCs. Spermatogenesis is disrupted in mice null for Cgt and Cst, encoding two enzymes essential for SGG biosynthesis. Sperm surface SGG also plays roles in fertilization. All of these results indic...

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