Abstract
Purpose: The disease course of multiple sclerosis (MS) is unpredictable, and reliable prognostic biomarkers are needed. Positron emission tomography (PET) with β-amyloid tracers is a promising tool for evaluating white matter (WM) damage and repair. Our aim was to investigate amyloid uptake in damaged (DWM) and normal-appearing WM (NAWM) of MS patients, and to evaluate possible correlations between cerebrospinal fluid (CSF) β-amyloid1-42 (Aβ) levels, amyloid tracer uptake, and brain volumes. Methods: Twelve MS patients were recruited and divided according to their disease activity into active and non-active groups. All participants underwent neurological examination, neuropsychological testing, lumbar puncture, brain magnetic resonance (MRI) imaging, and 18F-florbetapir PET. Aβ levels were determined in CSF samples from all patients. MRI and PET images were co-registered, and mean standardized uptake values (SUV) were calculated for each patient in the NAWM and in the DWM. To calculate brain volumes, brain segmentation was performed using statistical parametric mapping software. Nonparametric statistical analyses for between-group comparisons and regression analyses were conducted. Results: We found a lower SUV in DWM compared to NAWM (p < 0.001) in all patients. Decreased NAWM-SUV was observed in the active compared to non-active group (p < 0.05). Considering only active patients, NAWM volume correlated with NAWM-SUV (p = 0.01). Interestingly, CSF Aβ concentration was a predictor of both NAWM-SUV (r = 0.79; p = 0.01) and NAWM volume (r = 0.81, p = 0.01). Conclusions: The correlation between CSF Aβ levels and NAWM-SUV suggests that the predictive role of β-amyloid may be linked to early myelin damage and may reflect disease activity and clinical progression.
| Original language | English |
|---|---|
| Journal | European Journal of Nuclear Medicine and Molecular Imaging |
| DOIs | |
| Publication status | Accepted/In press - Jan 1 2018 |
Fingerprint
Keywords
- Amyloid
- Amyloid tracer
- Florbetapir
- Multiple sclerosis
- PET
- White matter
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging
Cite this
Amyloid PET as a marker of normal-appearing white matter early damage in multiple sclerosis : correlation with CSF β-amyloid levels and brain volumes. / Pietroboni, Anna M.; Carandini, Tiziana; Colombi, Annalisa; Mercurio, Matteo; Ghezzi, Laura; Giulietti, Giovanni; Scarioni, Marta; Arighi, Andrea; Fenoglio, Chiara; De Riz, Milena A.; Fumagalli, Giorgio G.; Basilico, Paola; Serpente, Maria; Bozzali, Marco; Scarpini, Elio; Galimberti, Daniela; Marotta, Giorgio.
In: European Journal of Nuclear Medicine and Molecular Imaging, 01.01.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Amyloid PET as a marker of normal-appearing white matter early damage in multiple sclerosis
T2 - correlation with CSF β-amyloid levels and brain volumes
AU - Pietroboni, Anna M.
AU - Carandini, Tiziana
AU - Colombi, Annalisa
AU - Mercurio, Matteo
AU - Ghezzi, Laura
AU - Giulietti, Giovanni
AU - Scarioni, Marta
AU - Arighi, Andrea
AU - Fenoglio, Chiara
AU - De Riz, Milena A.
AU - Fumagalli, Giorgio G.
AU - Basilico, Paola
AU - Serpente, Maria
AU - Bozzali, Marco
AU - Scarpini, Elio
AU - Galimberti, Daniela
AU - Marotta, Giorgio
PY - 2018/1/1
Y1 - 2018/1/1
N2 - Purpose: The disease course of multiple sclerosis (MS) is unpredictable, and reliable prognostic biomarkers are needed. Positron emission tomography (PET) with β-amyloid tracers is a promising tool for evaluating white matter (WM) damage and repair. Our aim was to investigate amyloid uptake in damaged (DWM) and normal-appearing WM (NAWM) of MS patients, and to evaluate possible correlations between cerebrospinal fluid (CSF) β-amyloid1-42 (Aβ) levels, amyloid tracer uptake, and brain volumes. Methods: Twelve MS patients were recruited and divided according to their disease activity into active and non-active groups. All participants underwent neurological examination, neuropsychological testing, lumbar puncture, brain magnetic resonance (MRI) imaging, and 18F-florbetapir PET. Aβ levels were determined in CSF samples from all patients. MRI and PET images were co-registered, and mean standardized uptake values (SUV) were calculated for each patient in the NAWM and in the DWM. To calculate brain volumes, brain segmentation was performed using statistical parametric mapping software. Nonparametric statistical analyses for between-group comparisons and regression analyses were conducted. Results: We found a lower SUV in DWM compared to NAWM (p < 0.001) in all patients. Decreased NAWM-SUV was observed in the active compared to non-active group (p < 0.05). Considering only active patients, NAWM volume correlated with NAWM-SUV (p = 0.01). Interestingly, CSF Aβ concentration was a predictor of both NAWM-SUV (r = 0.79; p = 0.01) and NAWM volume (r = 0.81, p = 0.01). Conclusions: The correlation between CSF Aβ levels and NAWM-SUV suggests that the predictive role of β-amyloid may be linked to early myelin damage and may reflect disease activity and clinical progression.
AB - Purpose: The disease course of multiple sclerosis (MS) is unpredictable, and reliable prognostic biomarkers are needed. Positron emission tomography (PET) with β-amyloid tracers is a promising tool for evaluating white matter (WM) damage and repair. Our aim was to investigate amyloid uptake in damaged (DWM) and normal-appearing WM (NAWM) of MS patients, and to evaluate possible correlations between cerebrospinal fluid (CSF) β-amyloid1-42 (Aβ) levels, amyloid tracer uptake, and brain volumes. Methods: Twelve MS patients were recruited and divided according to their disease activity into active and non-active groups. All participants underwent neurological examination, neuropsychological testing, lumbar puncture, brain magnetic resonance (MRI) imaging, and 18F-florbetapir PET. Aβ levels were determined in CSF samples from all patients. MRI and PET images were co-registered, and mean standardized uptake values (SUV) were calculated for each patient in the NAWM and in the DWM. To calculate brain volumes, brain segmentation was performed using statistical parametric mapping software. Nonparametric statistical analyses for between-group comparisons and regression analyses were conducted. Results: We found a lower SUV in DWM compared to NAWM (p < 0.001) in all patients. Decreased NAWM-SUV was observed in the active compared to non-active group (p < 0.05). Considering only active patients, NAWM volume correlated with NAWM-SUV (p = 0.01). Interestingly, CSF Aβ concentration was a predictor of both NAWM-SUV (r = 0.79; p = 0.01) and NAWM volume (r = 0.81, p = 0.01). Conclusions: The correlation between CSF Aβ levels and NAWM-SUV suggests that the predictive role of β-amyloid may be linked to early myelin damage and may reflect disease activity and clinical progression.
KW - Amyloid
KW - Amyloid tracer
KW - Florbetapir
KW - Multiple sclerosis
KW - PET
KW - White matter
UR - http://www.scopus.com/inward/record.url?scp=85055680652&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85055680652&partnerID=8YFLogxK
U2 - 10.1007/s00259-018-4182-1
DO - 10.1007/s00259-018-4182-1
M3 - Article
AN - SCOPUS:85055680652
JO - European Journal of Pediatrics
JF - European Journal of Pediatrics
SN - 0340-6199
ER -