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https://www.readbyqxmd.com/read/29149225/chemical-analysis-in-saliva-and-the-search-for-salivary-biomarkers-a-tutorial-review
#1
Kamonwad Ngamchuea, Korbua Chaisiwamongkhol, Christopher Batchelor-McAuley, Richard G Compton
Biomarkers refer to analytes that can be used in the diagnosis of diseases or disorders. In saliva, there are many components that are potential biomarkers, and increasing research has focussed on the development of saliva as a diagnostic fluid. This review summarizes the existing uses of salivary biomarkers and highlights the importance of the choice of saliva collection as well as the storage procedures. A case study on the effect of collection tools on the concentrations of one of the potential biomarkers, glutathione, is highlighted...
November 17, 2017: Analyst
https://www.readbyqxmd.com/read/29148106/epidemiology-of-donors-and-recipients-lessons-from-the-scandat-database
#2
REVIEW
G Edgren, H Hjalgrim
With the development of several 'vein-to-vein' databases, which capture data on the entire donor-recipient continuum and link this data to health outcomes, there has been an increasing number of studies investigating the health effects of all aspects of the practice of transfusion medicine. The Scandinavian Donations and Transfusions (SCANDAT) database is one of several such databases, which includes all electronically available data on blood donors, donations and transfusions since the late 1960s in Sweden and the early 1980s in Denmark...
November 16, 2017: Transfusion Medicine
https://www.readbyqxmd.com/read/29147907/protein-repair-from-glycation-by-glyoxals-by-the-dj-1-family-maillard-deglycases
#3
Mouadh Mihoub, Jad Abdallah, Gilbert Richarme
DJ-1 and its prokaryotic homologs, Hsp31, YhbO and YajL from Escherichia coli and PfpI from Pyrococcus furiosus, repair proteins from glycation by glyoxals (R-CO-CHO), which constitute their major glycating agents. Glycation is a non-enzymatic covalent reaction discovered by Louis Camille Maillard in 1912, between reactive carbonyls (reducing sugars and glyoxals) and amino acids (cysteine, arginine and lysine), which inactivates proteins. By degrading Maillard adducts formed between carbonyls and thiols or amino groups, the DJ-1 family Maillard deglycases prevent the formation of the so-called advanced glycation end products (AGEs) that arise from Maillard adducts after dehydrations, oxidations and rearrangements...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29147116/influence-of-water-sanitation-and-hygiene-practices-on-common-infections-among-under-five-children-in-longido-and-monduli-districts-of-arusha-tanzania
#4
Hoyce Amini Mshida, Neema Kassim, Martin Epafras Kimanya, Emmanuel Mpolya
The study aimed at assessing water, sanitation, and hygiene practices and their influence on infectious diseases among under-five children in semipastoral communities of Arusha. The study was cross-sectional in design. Prevalence of infectious diseases among under-five children was derived from patients' attendance register. Mothers randomly sampled from households were interviewed using questionnaire. Information regarding child morbidity and sociodemographic and WASH characteristics was gathered. Hospital data revealed that 2/3 of under-five patients visited the hospitals annually were suffering from infectious diseases...
2017: Journal of Environmental and Public Health
https://www.readbyqxmd.com/read/29147032/emptying-the-stores-lysosomal-diseases-and-therapeutic-strategies
#5
REVIEW
Frances M Platt
Lysosomal storage disorders (LSDs) - designated as 'orphan' diseases - are inborn errors of metabolism caused by defects in genes that encode proteins involved in various aspects of lysosomal homeostasis. For many years, LSDs were viewed as unattractive targets for the development of therapies owing to their low prevalence. However, the development and success of the first commercial biologic therapy for an LSD - enzyme replacement therapy for type 1 Gaucher disease - coupled with regulatory incentives rapidly catalysed commercial interest in therapeutically targeting LSDs...
November 17, 2017: Nature Reviews. Drug Discovery
https://www.readbyqxmd.com/read/29146937/tfeb-regulates-lysosomal-positioning-by-modulating-tmem55b-expression-and-jip4-recruitment-to-lysosomes
#6
Rose Willett, José A Martina, James P Zewe, Rachel Wills, Gerald R V Hammond, Rosa Puertollano
Lysosomal distribution is linked to the role of lysosomes in many cellular functions, including autophagosome degradation, cholesterol homeostasis, antigen presentation, and cell invasion. Alterations in lysosomal positioning contribute to different human pathologies, such as cancer, neurodegeneration, and lysosomal storage diseases. Here we report the identification of a novel mechanism of lysosomal trafficking regulation. We found that the lysosomal transmembrane protein TMEM55B recruits JIP4 to the lysosomal surface, inducing dynein-dependent transport of lysosomes toward the microtubules minus-end...
November 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/29146678/cross-organ-sensitisation-between-the-colon-and-bladder-to-pee-or-not-to-pee
#7
Luke Grundy, Stuart M Brierley
Chronic abdominal and pelvic pain are common, debilitating clinical conditions experienced by millions of patients around the globe. The origin of such pain commonly arises from the intestine and bladder, which share common primary roles; the collection, storage and expulsion of waste. These visceral organs are located in close proximity to one another, and also share common innervation from spinal afferent pathways. Chronic abdominal pain, constipation or diarrhoea are primary symptoms for patients with Irritable Bowel Syndrome (IBS) or Inflammatory Bowel Disease (IBD)...
November 16, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/29143882/enzymatic-properties-of-%C3%AE-n-acetylglucosaminidases
#8
REVIEW
Rui Zhang, Junpei Zhou, Zhifeng Song, Zunxi Huang
β-N-Acetylglucosaminidases (GlcNAcases) hydrolyse N-acetylglucosamine-containing oligosaccharides and proteins. These enzymes produce N-acetylglucosamine (GlcNAc) and have a wide range of promising applications in the food, energy, and pharmaceutical industries, such as synergistic degradation of chitin with endo-chitinases and using GlcNAc to produce sialic acid, bioethanol, single-cell proteins, and pharmaceutical therapeutics. GlcNAcases also play an important role in the dynamic balance of cellular O-linked GlcNAc levels, catabolism of ganglioside storage in Tay-Sachs disease, and bacterial cell wall recycling and flagellar assembly...
November 16, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29143672/diagnostic-accuracy-of-serological-diagnosis-of-hepatitis-c-and-b-using-dried-blood-spot-samples-dbs-two-systematic-reviews-and-meta-analyses
#9
Berit Lange, Jennifer Cohn, Teri Roberts, Johannes Camp, Jeanne Chauffour, Nina Gummadi, Azumi Ishizaki, Anupriya Nagarathnam, Edouard Tuaillon, Philippe van de Perre, Christine Pichler, Philippa Easterbrook, Claudia M Denkinger
BACKGROUND: Dried blood spots (DBS) are a convenient tool to enable diagnostic testing for viral diseases due to transport, handling and logistical advantages over conventional venous blood sampling. A better understanding of the performance of serological testing for hepatitis C (HCV) and hepatitis B virus (HBV) from DBS is important to enable more widespread use of this sampling approach in resource limited settings, and to inform the 2017 World Health Organization (WHO) guidance on testing for HBV/HCV...
November 1, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29143313/polyglucosan-myopathy-and-functional-characterization-of-a-novel-gyg1-mutation
#10
C Hedberg-Oldfors, A Mensch, K Visuttijai, G Stoltenburg, D Stoevesandt, T Kraya, A Oldfors, S Zierz
OBJECTIVES: Disorders of glycogen metabolism include rare hereditary muscle glycogen storage diseases with polyglucosan, which are characterized by storage of abnormally structured glycogen in muscle in addition to exercise intolerance or muscle weakness. In this study, we investigated the etiology and pathogenesis of a late-onset myopathy associated with glycogenin-1 deficiency. MATERIALS AND METHODS: A family with two affected siblings, 64- and 66-year-olds, was studied...
November 15, 2017: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/29143201/newborn-screening-for-lysosomal-storage-disorders-by-tandem-mass-spectrometry-in-north-east-italy
#11
Alberto B Burlina, Giulia Polo, Leonardo Salviati, Giovanni Duro, Carmela Zizzo, Andrea Dardis, Bruno Bembi, Chiara Cazzorla, Laura Rubert, Roberta Zordan, Robert J Desnick, Alessandro P Burlina
BACKGROUND: Lysosomal storage diseases (LSDs) are inborn errors of metabolism resulting from 50 different inherited disorders. The increasing availability of treatments and the importance of early intervention have stimulated newborn screening (NBS) to diagnose LSDs and permit early intervention to prevent irreversible impairment or severe disability. We present our experience screening newborns in North East Italy to identify neonates with Mucopolysaccharidosis type I (MPS I) and Pompe, Fabry, and Gaucher diseases...
November 15, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/29141570/effect-of-extra-virgin-olive-oil-and-table-olives-on-the-immune-inflammatory-responses-potential-clinical-applications
#12
Caterina Maria Gambino, Giulia Accardi, Anna Aiello, Giuseppina Candore, Giovanni Dara-Guccione, Mario Mirisola, Antonio Procopio, Giusi Taormina, Calogero Caruso
Extra virgin olive oil (EVOO) is the common element between the Mediterranean countries. It can be considered a nutraceutical and functional food, thanks to its bioactive compounds. It can act and modulate different processes linked to ageing and age-related diseases related to a common chronic low grade inflammation. Depending on the cultivar, the growth conditions, the period of harvesting, the productive process and time of product storage, EVOO could contain different amount of vegetal components. Of course, the same is for table olives...
November 13, 2017: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/29140481/excessive-burden-of-lysosomal-storage-disorder-gene-variants-in-parkinson-s-disease
#13
Laurie A Robak, Iris E Jansen, Jeroen van Rooij, André G Uitterlinden, Robert Kraaij, Joseph Jankovic, Peter Heutink, Joshua M Shulman
Mutations in the glucocerebrosidase gene (GBA), which cause Gaucher disease, are also potent risk factors for Parkinson's disease. We examined whether a genetic burden of variants in other lysosomal storage disorder genes is more broadly associated with Parkinson's disease susceptibility. The sequence kernel association test was used to interrogate variant burden among 54 lysosomal storage disorder genes, leveraging whole exome sequencing data from 1156 Parkinson's disease cases and 1679 control subjects. We discovered a significant burden of rare, likely damaging lysosomal storage disorder gene variants in association with Parkinson's disease risk...
November 13, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29138617/phylogenetic-placement-and-morphological-characterization-of-sclerotium-rolfsii-teleomorph-athelia-rolfsii-associated-with-blight-disease-of-ipomoea-batatas-in-korea
#14
Narayan Chandra Paul, Eom-Ji Hwang, Sang-Sik Nam, Hyeong-Un Lee, Joon-Seol Lee, Gyeong-Dan Yu, Yong-Gu Kang, Kyeong-Bo Lee, San Go, Jung-Wook Yang
In this study, we aimed to characterize fungal samples from necrotic lesions on collar regions observed in different sweetpotato growing regions during 2015 and 2016 in Korea. Sclerotia appeared on the root zone soil surface, and white dense mycelia were observed. At the later stages of infection, mother roots quickly rotted, and large areas of the plants were destroyed. The disease occurrence was monitored at 45 and 84 farms, and 11.8% and 6.8% of the land areas were found to be infected in 2015 and 2016, respectively...
September 2017: Mycobiology
https://www.readbyqxmd.com/read/29137972/circulating-tumoral-dna-preanalytical-validation-and-quality-control-in-a-diagnostic-laboratory
#15
Sergey Nikolaev, Laure Lemmens, Thibaud Koessler, Jean-Louis Blouin, Thierry Nouspikel
We present the results of our technical validation process in establishing the analysis of circulating tumor DNA (ctDNA) as a diagnostic tool. Like most cells in our body, tumor cells shed DNA in the blood flow. Analysis of ctDNA mutational content can provide invaluable information on the genetic makeup of a tumor, and assist oncologists in deciding on therapy, or in following residual disease. However, low absolute amounts of circulating DNA and low tumor fraction constitute formidable analytical challenges...
November 11, 2017: Analytical Biochemistry
https://www.readbyqxmd.com/read/29133940/stimulators-and-activators-of-soluble-guanylate-cyclase-for-urogenital-disorders
#16
REVIEW
Fabiola Z Mónica, Edson Antunes
Lower urinary tract symptoms (LUTS), comprising storage (such as urinary incontinence and urinary frequency), voiding, and postmicturition symptoms, are highly prevalent conditions that affect millions of people worldwide. LUTS have a profound effect on quality of life and are a considerable cost to health care systems. In men specifically, BPH commonly leads to LUTS. Clinical studies also show an association of LUTS with erectile dysfunction (ED). Nitric oxide (NO) has long been recognized as an important nonadrenergic, noncholinergic (NANC) transmitter in bladder, urethra, prostate, and corpus cavernosum smooth muscle...
November 14, 2017: Nature Reviews. Urology
https://www.readbyqxmd.com/read/29131106/gut-microbiota-dependent-modulation-of-energy-metabolism
#17
Christina N Heiss, Louise E Olofsson
The gut microbiota has emerged as an environmental factor that modulates the host's energy balance. It increases the host's ability to harvest energy from the digested food, and produces metabolites and microbial products such as short-chain fatty acids, secondary bile acids, and lipopolysaccharides. These metabolites and microbial products act as signaling molecules that modulate appetite, gut motility, energy uptake and storage, and energy expenditure. Several findings suggest that the gut microbiota can affect the development of obesity...
November 8, 2017: Journal of Innate Immunity
https://www.readbyqxmd.com/read/29129818/inter-and-intra-subject-variability-of-nitric-oxide-levels-in-leukocyte-subpopulations
#18
Sheena Maharaj, Kim Lu, Shlomit Aizik, Frank Zaldivar, Fadia Haddad, Hye-Won Shin, Szu-Yun Leu, Eliezer Nussbaum, Inderpal Randhawa, Dan Cooper
Assessment of nitric oxide (NO) dynamics in immune cells, commonly measured using NO surrogates such as inducible nitric oxide synthase (iNOS) rather than NO itself, has been effective in understanding pathophysiology across a wide range of diseases. Although the intracellular measurement of NO is now feasible, many technical issues remain unresolved. The principle aim of our study was to determine the effect of storage time of whole blood on nitric oxide (NO) level expression in leukocytes. This is important because immune cells remain chemically dynamic even after they are removed from the circulation, and the impact of storage time must be known to optimally quantify the effect of a disease or condition on NO dynamics in circulating leukocytes...
November 9, 2017: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/29128371/assessments-of-neurocognitive-and-behavioral-function-in-the-mucopolysaccharidoses
#19
REVIEW
Elsa G Shapiro, Maria L Escolar, Kathleen A Delaney, John J Mitchell
The mucopolysaccharidoses (MPS) are a group of rare, inherited lysosomal storage disorders in which accumulation of glycosaminoglycans (GAGs) leads to progressive tissue and organ dysfunction. In addition to a variety of somatic signs and symptoms, patients with rapidly progressing MPS I (Hurler), II, III, and VII can present with significant neurological manifestations, including impaired cognitive abilities, difficulties in language and speech, behavioral abnormalities, sleep problems, and/or seizures. Neurological symptoms have a substantial impact on the quality of life of MPS patients and their families...
September 15, 2017: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/29127952/diabetes-mellitus-in-a-patient-with-glycogen-storage-disease-type-ia-a-case-report
#20
Aviva Cohn, Anupam Ohri
BACKGROUND: Glycogen storage disease type Ia is a genetic disorder that is associated with persistent fasting hypoglycemia and the inability to produce endogenous glucose. The development of diabetes with glycogen storage disease is exceedingly rare. The underlying pathogenesis for developing diabetes in these patients is unclear, and there are no guidelines for treatment. CASE PRESENTATION: We describe a case of a 34-year-old woman of South Asian descent with glycogen storage disease type Ia, who developed uncontrolled diabetes mellitus as a young adult...
November 12, 2017: Journal of Medical Case Reports
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