Browsing Bergen Open Research Archive by Author "Isohanni, Pirjo"
Now showing items 1-7 of 7
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Diagnostic value of serum biomarkers FGF21 and GDF15 compared to muscle sample in mitochondrial disease
Lehtonen, Jenni M.; Auranen, Mari; Darin, Niklas; Sofou, Kalliopi; Bindoff, Laurence; Hikmat, Omar; Uusimaa, Johanna; Vieira, Paivi; Tulinius, Már; Lönnqvist, Tuula; de Coo, Irenaeus F.; Suomalainen, Anu; Isohanni, Pirjo (Journal article; Peer reviewed, 2021)The aim of this study was to compare the value of serum biomarkers, fibroblast growth factor 21 (FGF21) and growth differentiation factor 15 (GDF15), with histological analysis of muscle in the diagnosis of mitochondrial ... -
Expanding the phenotypic spectrum of BCS1L-related mitochondrial disease
Hikmat, Omar; Isohanni, Pirjo; Keshavan, Nandaki; Ferla, Matteo P.; Fassone, Elisa; Abbott, Mary-Alice; Bellusci, Marcello; Darin, Niklas; Dimmock, David; Ghezzi, Daniele; Houlden, Henry; Invernizzi, Federica; Kamarus Jaman, Nazreen B.; Kurian, Manju A.; Morava, Eva; Naess, Karin; Ortigoza-Escobar, Juan Darío; Parikh, Sumit; Pennisi, Alessandra; Barcia, Giulia; Tylleskär, Karin; Brackman, Damien; Wortmann, Saskia B.; Taylor, Jenny C.; Bindoff, Laurence Albert; Fellman, Vineta; Rahman, Shamima (Journal article; Peer reviewed, 2021)Objective To delineate the full phenotypic spectrum of BCS1L-related disease, provide better understanding of the genotype–phenotype correlations and identify reliable prognostic disease markers. Methods We performed ... -
The impact of gender, puberty, and pregnancy in patients with POLG disease
Hikmat, Omar; Naess, Karin; Engvall, Martin; Klingenberg, Claus; Rasmussen, Magnhild; Tallaksen, Chantal; Samsonsen, Christian; Brodtkorb, Eylert; Ostergaard, Elsebet; de Coo, Rene; Pias-Peleteiro, Leticia; Isohanni, Pirjo; Uusimaa, Johanna; Darin, Niklas; Rahman, Shamima; Bindoff, Laurence (Journal article; Peer reviewed, 2020)Objective To study the impact of gender, puberty, and pregnancy on the expression of POLG disease, one of the most common mitochondrial diseases known. Methods Clinical, laboratory, and genetic data were collected ... -
A multicenter study on Leigh syndrome: disease course and predictors of survival
Sofou, Kalliopi; De Coo, Irenaeus F. M.; Isohanni, Pirjo; Ostergaard, Elsebet; Naess, Karin; De Meirleir, Linda; Tzoulis, Charalampos; Uusimaa, Johanna; De Angst, Isabell B.; Lönnqvist, Tuula; Pihko, Helena; Mankinen, Katariina; Bindoff, Laurence; Tulinius, Már; Darin, Niklas (Peer reviewed; Journal article, 2014-04-15)Background: Leigh syndrome is a progressive neurodegenerative disorder, associated with primary or secondary dysfunction of the mitochondrial oxidative phosphorylation. Despite the fact that Leigh syndrome is the most ... -
Phenotypic spectrum and clinical course of single large-scale mitochondrial DNA deletion disease in the paediatric population: a multicentre study
Björkman, Kristoffer; Vissing, John; Østergaard, Elsebet; Bindoff, Laurence Albert; de Coo, Irenaeus F M; Engvall, Martin; Hikmat, Omar; Isohanni, Pirjo; Kollberg, Gittan; Lindberg, Christopher; Majamaa, Kari; Naess, Karin; Uusimaa, Johanna; Tulinius, Mar; Darin, Niklas (Journal article; Peer reviewed, 2023)Background: Large-scale mitochondrial DNA deletions (LMD) are a common genetic cause of mitochondrial disease and give rise to a wide range of clinical features. Lack of longitudinal data means the natural history remains ... -
Simplifying the clinical classification of polymerase gamma (POLG) disease based on age of onset; studies using a cohort of 155 cases
Hikmat, Omar; Naess, Karin; Engvall, Martin; Klingenberg, Claus; Rasmussen, Magnhild; Tallaksen, Chantal; Brodtkorb, Eylert; Østergaard, Elsebet; de Coo, Irenaeus F.M.; Pias-Peleteiro, Leticia; Isohanni, Pirjo; Uusimaa, Johanna; Darin, Niklas; Rahman, Shamima; Bindoff, Laurence (Journal article; Peer reviewed, 2020)Background Variants in POLG are one of the most common causes of inherited mitochondrial disease. Phenotypic classification of POLG disease has evolved haphazardly making it complicated and difficult to implement in ... -
Using urine to diagnose large-scale mtDNA deletions in adult patients
Varhaug, Kristin Nielsen; Sanchez Nido, Gonzalo; de Coo, Irenaeus; Isohanni, Pirjo; Suomalainen, Anu; Tzoulis, Charalampos; Knappskog, Per; Bindoff, Laurence (Journal article; Peer reviewed, 2020)Objective: The aim of this study was to evaluate if urinary sediment cells offered a robust alternative to muscle biopsy for the diagnosis of single mtDNA deletions. Methods: Eleven adult patients with progressive ...