Pitfalls and drawbacks in screening of congenital disorders of glycosylation
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Eliška Marklová
and Ziad Albahri
Abstract
Congenital disorders of glycosylation include a group of diseases, each of them caused by different protein (mostly enzyme) impairment due to a specific gene defect. The many subtypes are classified according to clinical features, enzymology and molecular genetic analyses. Problems in diagnostics arise from the great diversity in clinical presentation, usually age-related, and different severities of individual types of these, by far underdiagnosed, diseases. Also the biochemical findings tend to vary, even within a single type. No one screening test, common for all types, is available so far. Several methods of choice may be used in the first approach; other procedures must follow for detailed typing of the defect. Possible drawbacks and pitfalls in the diagnostics from the viewpoint of our 3-year studies and practical screening experience are presented.
Copyright © 2004 by Walter de Gruyter GmbH & Co. KG
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- Meetings and Awards
Articles in the same Issue
- Publishers note
- Towards quality specifications in extra-analytical phases of laboratory activity
- Quality indicators and specifications for the extra-analytical phases in clinical laboratory management
- Pitfalls and drawbacks in screening of congenital disorders of glycosylation
- Activity of eosinophils and immunoglobulin E concentration in the peritoneal fluid of women with endometriosis
- Rapid generation of detailed loss of heterozygosity profiles for routine diagnosis of gliomas
- Presence of secretory group IIa and V phospholipase A2 and cytosolic group IVα phospholipase A2 in chondrocytes from patients with rheumatoid arthritis
- Neurokinin B levels in maternal circulation during early pregnancy
- Cl- regulates cryoglobulin structure: a new hypothesis for the physiopathological mechanism of temperature non-dependent cryoprecipitation
- Urine labeling with orally applied marker substances in drug substitution therapy
- Cardiac natriuretic hormones, neuro-hormones, thyroid hormones and cytokines in normal subjects and patients with heart failure
- Clinical utility of serum holotranscobalamin as a marker of cobalamin status in elderly patients with neuropsychiatric symptoms
- Comparison of serum creatinine, uric acid, albumin and glucose in male professional endurance athletes compared with healthy controls
- Low S-adenosylmethionine concentrations found in patients with severe inflammatory bowel disease
- Reference ranges for two automated chemiluminescent assays for serum insulin-like growth factor I (IGF-I) and IGF-binding protein 3 (IGFBP-3)
- The influence of freezer storage of urine samples on the BONN-Risk-Index for calcium oxalate crystallization
- First WHO/IFCC International Reference Reagent for Lipoprotein(a) for Immunoassay – Lp(a) SRM 2B
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- Intra-laboratory analytical variability of biochemical markers of fibrosis (Fibrotest) and activity (Actitest) and reference ranges in healthy blood donors
- Meetings and Awards