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Abu Bakar N, Voermans NC, Marquardt T, Thiel C, Janssen MCH, Hansikova H, Crushell E, Sykut-Cegielska J, Bowling F, MØrkrid L, Vissing J, Morava E, van Scherpenzeel M, Lefeber DJ. Intact transferrin and total plasma glycoprofiling for diagnosis and therapy monitoring in phosphoglucomutase-I deficiency. Transl Res 2018; 199:62-76. [PMID: 30048639 PMCID: PMC7041963 DOI: 10.1016/j.trsl.2018.04.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 04/25/2018] [Accepted: 04/30/2018] [Indexed: 01/01/2023]
Abstract
Phosphoglucomutase 1 (PGM1) deficiency results in a mixed phenotype of a Glycogen Storage Disorder and a Congenital Disorder of Glycosylation (CDG). Screening for abnormal glycosylation has identified more than 40 patients, manifesting with a broad clinical and biochemical spectrum which complicates diagnosis. Together with the availability of D-galactose as dietary therapy, there is an urgent need for specific glycomarkers for early diagnosis and treatment monitoring. We performed glycomics profiling by high-resolution QTOF mass spectrometry in a series of 19 PGM1-CDG patients, covering a broad range of biochemical and clinical severity. Bioinformatics and statistical analysis were used to select glycomarkers for diagnostics and define glycan-indexes for treatment monitoring. Using 3 transferrin glycobiomarkers, all PGM1-CDG patients were diagnosed with 100% specificity and sensitivity. Total plasma glycoprofiling showed an increase in high mannose glycans and fucosylation, while global galactosylation and sialylation were severely decreased. For treatment monitoring, we defined 3 glycan-indexes, reflecting normal glycosylation, a lack of complete glycans (LOCGI) and of galactose residues (LOGI). These indexes showed improved glycosylation upon D-galactose treatment with a fast and near-normalization of the galactose index (LOGI) in 6 out of 8 patients and a slower normalization of the LOCGI in all patients. Total plasma glycoprofiling showed improvement of the global high mannose glycans, fucosylation, sialylation, and galactosylation status on D-galactose treatment. Our study indicates specific glycomarkers for diagnosis of mildly and severely affected PGM1-CDG patients, and to monitor the glycan-specific effects of D-galactose therapy.
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Affiliation(s)
- Nurulamin Abu Bakar
- Department of Neurology and Translational Metabolic Laboratory, Donders Institute for Brain, Cognition, and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands.
| | - Nicol C Voermans
- Department of Neurology, Radboud University Medical Center, Nijmegen, The Netherlands.
| | | | - Christian Thiel
- Center for Child and Adolescent Medicine, Kinderheilkunde I, University of Heidelberg, Heidelberg, Germany.
| | - Mirian C H Janssen
- Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands.
| | - Hana Hansikova
- Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic.
| | - Ellen Crushell
- Academic Centre on Rare Diseases, University College Dublin, Dublin, Republic of Ireland.
| | - Jolanta Sykut-Cegielska
- Department of Inborn Errors of Metabolism and Paediatrics, Institute of Mother and Child, Warsaw, Poland.
| | - Francis Bowling
- Biochemical Diseases, Mater Children's Hospital, South Brisbane, Queensland, Australia.
| | - Lars MØrkrid
- Institute of Clinical Biochemistry, Faculty of Medicine, University of Oslo and Department of Medical Biochemistry, Oslo University Hospital, Norway.
| | - John Vissing
- Department of Neurology, University of Copenhagen, Denmark.
| | - Eva Morava
- Department of Clinical Genomics, CIM, Mayo Clinic, Rochester, Minnesota.
| | - Monique van Scherpenzeel
- Translational Metabolic Laboratory, Radboud University Medical Center, Nijmegen, The Netherlands.
| | - Dirk J Lefeber
- Department of Neurology and Translational Metabolic Laboratory, Donders Institute for Brain, Cognition, and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands.
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Øverlie I, MØrkrid L, Andersson AM, SkakkebÆk NE, Moen MH, Holte A. Inhibin A and B as markers of menopause: a five-year prospective longitudinal study of hormonal changes during the menopausal transition. Acta Obstet Gynecol Scand 2005. [DOI: 10.1080/j.0001-6349.2005.00490.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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