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Phosphorylated tau 181 and 217 are elevated in serum and muscle of patients with amyotrophic lateral sclerosis
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Phosphorylated tau 181 and 217 are elevated in serum and muscle of patients with amyotrophic lateral sclerosis
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Journal Article
Phosphorylated tau 181 and 217 are elevated in serum and muscle of patients with amyotrophic lateral sclerosis
2025
Overview
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.
Blood phosphorylated (p)-tau 181 and p-tau 217 have been proposed as accurate biomarkers of Alzheimer’s disease pathology. Here, the authors find p-tau 181 and 217 are elevated in serum and muscle of patients with amyotrophic lateral sclerosis.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 82/51
/ 82/58
/ Adult
/ Aged
/ Alzheimer Disease - diagnosis
/ Alzheimer Disease - metabolism
/ Alzheimer Disease - pathology
/ Amyotrophic lateral sclerosis
/ Amyotrophic Lateral Sclerosis - blood
/ Amyotrophic Lateral Sclerosis - diagnosis
/ Amyotrophic Lateral Sclerosis - metabolism
/ Amyotrophic Lateral Sclerosis - pathology
/ Biopsy
/ Blood
/ Female
/ Humanities and Social Sciences
/ Humans
/ Male
/ Muscle, Skeletal - metabolism
/ Muscle, Skeletal - pathology
/ Muscles
/ Science
