Home > Publications Database > Phosphorylated tau 181 and 217 are elevated in serum and muscle of patients with amyotrophic lateral sclerosis. |
Journal Article | DZNE-2025-00412 |
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2025
Springer Nature
[London]
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Please use a persistent id in citations: doi:10.1038/s41467-025-57144-7
Abstract: Blood phosphorylated (p)-tau 181 and p-tau 217 have been proposed as accurate biomarkers of Alzheimer's disease (AD) pathology. However, blood p-tau 181 is also elevated in amyotrophic lateral sclerosis (ALS) without a clearly identified source. We measured serum p-tau 181 and p-tau 217 in a multicentre cohort of ALS (n = 152), AD (n = 111) cases and disease controls (n = 99) recruited from four different centres. Further, we investigated the existence of both p-tau species using immunohistochemistry (IHC) and mass spectrometry (MS) in muscle biopsies of ALS cases (IHC: n = 13, MS: n = 5) and disease controls (IHC: n = 14, MS: n = 5) from one cohort. Serum p-tau 181 and p-tau 217 were higher in AD and ALS patients compared to disease controls. IHC and MS analyses revealed the presence of p-tau 181 and 217 in muscle biopsies from both ALS cases and disease controls, with ALS samples showing increased p-tau reactivity in atrophic muscle fibres. Blood p-tau species could potentially be used to diagnose both ALS and AD.
Keyword(s): Humans (MeSH) ; Amyotrophic Lateral Sclerosis: blood (MeSH) ; Amyotrophic Lateral Sclerosis: metabolism (MeSH) ; Amyotrophic Lateral Sclerosis: pathology (MeSH) ; tau Proteins: metabolism (MeSH) ; tau Proteins: blood (MeSH) ; Male (MeSH) ; Female (MeSH) ; Middle Aged (MeSH) ; Aged (MeSH) ; Phosphorylation (MeSH) ; Biomarkers: blood (MeSH) ; Alzheimer Disease: blood (MeSH) ; Alzheimer Disease: metabolism (MeSH) ; Alzheimer Disease: pathology (MeSH) ; Alzheimer Disease: diagnosis (MeSH) ; Muscle, Skeletal: metabolism (MeSH) ; Muscle, Skeletal: pathology (MeSH) ; Case-Control Studies (MeSH) ; Biopsy (MeSH) ; Aged, 80 and over (MeSH) ; Adult (MeSH) ; Cohort Studies (MeSH) ; tau Proteins ; Biomarkers ; MAPT protein, human
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