PMID- 33038641 OWN - NLM STAT- MEDLINE DCOM- 20210617 LR - 20210617 IS - 1873-264X (Electronic) IS - 0731-7085 (Linking) VI - 192 DP - 2021 Jan 5 TI - An SPRi-based biosensor pilot study: Analysis of multiple circulating extracellular vesicles and hippocampal volume in Alzheimer's disease. PG - 113649 LID - S0731-7085(20)31535-1 [pii] LID - 10.1016/j.jpba.2020.113649 [doi] AB - One of the main hurdles in the study of Alzheimer's Disease (AD) is the lack of easily accessible and sensitive biomarkers for the diagnosis, the prediction of the disease progression rate and the evaluation of rehabilitative and pharmacological treatments. Extracellular Vesicles (EVs) are nanoscale particles released by body cells, studied as promising biomarkers of AD as they are involved in the onset and progression of the disease. In the strive for a reliable and sensitive method to analyze EVs, we applied our recently developed biosensor based on Surface Plasmon Resonance imaging (SPRi) technology for the identification and profiling of neural EVs populations circulating in the plasma of 10 AD patients and 10 healthy subjects. The SPRi-array was designed to separate simultaneously EVs released by neurons, astrocytes, microglia and oligodendrocytes, and to evaluate the presence and the relative amount of specific surface molecules related to pathological processes including translocator protein (TSPO), beta-Amyloid and ganglioside M1. As results, significant variations in the relative amount and cargoes of specific brain-derived populations of EVs were observed comparing EVs coming from AD patients and healthy subjects, finding the main differences in the activation phenotype of microglia EVs, in the lipid moieties on generic EVs and in the beta-Amyloid expression on surfaces of neuronal EVs. Besides, the demonstrated correlation of SPRi data with Magnetic Resonance Imaging analysis, provided support for using the SPRi-based biosensor for the evaluation of neurodegeneration detecting and characterizing circulating EVs as peripheral biomarkers for the diagnosis and monitoring of progression and rehabilitation treatments in AD patients. CI - Copyright (c) 2020 Elsevier B.V. All rights reserved. FAU - Picciolini, Silvia AU - Picciolini S AD - IRCCS Fondazione Don Carlo Gnocchi, Via Capecelatro 66, Milan, Italy. FAU - Gualerzi, Alice AU - Gualerzi A AD - IRCCS Fondazione Don Carlo Gnocchi, Via Capecelatro 66, Milan, Italy. FAU - Carlomagno, Cristiano AU - Carlomagno C AD - IRCCS Fondazione Don Carlo Gnocchi, Via Capecelatro 66, Milan, Italy. FAU - Cabinio, Monia AU - Cabinio M AD - IRCCS Fondazione Don Carlo Gnocchi, Via Capecelatro 66, Milan, Italy. FAU - Sorrentino, Stefano AU - Sorrentino S AD - IRCCS Fondazione Don Carlo Gnocchi, Via Capecelatro 66, Milan, Italy. FAU - Baglio, Francesca AU - Baglio F AD - IRCCS Fondazione Don Carlo Gnocchi, Via Capecelatro 66, Milan, Italy. FAU - Bedoni, Marzia AU - Bedoni M AD - IRCCS Fondazione Don Carlo Gnocchi, Via Capecelatro 66, Milan, Italy. Electronic address: mbedoni@dongnocchi.it. LA - eng PT - Journal Article DEP - 20200923 PL - England TA - J Pharm Biomed Anal JT - Journal of pharmaceutical and biomedical analysis JID - 8309336 RN - 0 (Receptors, GABA) RN - 0 (TSPO protein, human) SB - IM MH - *Alzheimer Disease/diagnostic imaging MH - *Extracellular Vesicles MH - Hippocampus/diagnostic imaging MH - Humans MH - Pilot Projects MH - Receptors, GABA MH - Surface Plasmon Resonance OTO - NOTNLM OT - Alzheimer's disease OT - Biosensor OT - Extracellular vesicles OT - Hippocampal volume OT - Surface plasmon resonance imaging COIS- Declaration of Competing Interest The authors reported no declarations of interest. EDAT- 2020/10/11 06:00 MHDA- 2021/06/22 06:00 CRDT- 2020/10/10 20:12 PHST- 2020/06/14 00:00 [received] PHST- 2020/09/10 00:00 [revised] PHST- 2020/09/15 00:00 [accepted] PHST- 2020/10/11 06:00 [pubmed] PHST- 2021/06/22 06:00 [medline] PHST- 2020/10/10 20:12 [entrez] AID - S0731-7085(20)31535-1 [pii] AID - 10.1016/j.jpba.2020.113649 [doi] PST - ppublish SO - J Pharm Biomed Anal. 2021 Jan 5;192:113649. doi: 10.1016/j.jpba.2020.113649. Epub 2020 Sep 23.