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StrokeEXO4STROKENCT05370105

Extracellular Vesicles as Stroke Biomarkers

An observational study of Stroke and Rehabilitation, run by Fondazione Don Carlo Gnocchi ETS at 2 sites in Italy.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The combination of rehabilitation protocols and regenerative therapies offers the outstanding opportunity to promote and enhance the endogenous regenerative and repair processes occurring in tissues damaged or lost due to injury, disease, or age. Read more about this study

Who is it for?
Ages 35 to 75 yearsHealthy volunteers can take part
Conditions the study is for
Stroke, Rehabilitation
What is being tested?
blood withdrawal
How many people
88 participants
Where
2 sitesItaly
Study dates
25 Jun 2018to 31 Jul 2023
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 35 to 75 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Study population: Patients hospitalized at Fondazione Don Gnocchi after stroke injury and undergoing an intensive rehabilitation program.

Who may be able to join

  • Diagnosis of ischemic or haemorrhagic stroke related to intensive post-stroke rehabilitation hospitalization
  • within 15 days of the ictal event

Who cannot join

  • Previous head injuries/traumas
  • Oncological diseases
  • Diseases of the immune and haematological system
  • Neurodegenerative diseases

Trial locations and contacts

2 sites in 1 country.

Italy2 sites
  • IRCCS Don Gnocchi, Fondazione Don Carlo Gnocchi ONLUS

    Florence

  • IRCCS S. Maria Nascente, Fondazione Don Carlo Gnocchi ONLUS

    Milan, 20148

Other trials in Italy

About this study

Official title: Characterization of Circulating Extracellular Vesicles/Exosomes as New Predictive Biomarkers in Stroke Patients

The combination of rehabilitation protocols and regenerative therapies offers the outstanding opportunity to promote and enhance the endogenous regenerative and repair processes occurring in tissues damaged or lost due to injury, disease, or age. Still, one of the main hurdles in the clinical approach to regenerative rehabilitation is the lack of easily accessible and sensitive biomarkers for the evaluation of rehabilitation and therapy efficacy. Extracellular vesicles (EVs) are nanoscaled vesicles that mediate intercellular communication among organs. EVs were shown to be involved in the onset, progression and resolution of many disorders, being also used as valuable tool in the regenerative medicine field. However, the initial enthusiastic approach to EVs has been hindered in its transfer to clinics because of technological obstacles related to their dimensions and to their limited amount. The present project proposes the application of a Surface Plasmon Resonance imaging (SPRi)-based biosensor for the detection and characterization of blood EVs from stroke patients, before and after rehabilitation. After the successful SPRi detection of EVs of different cellular origin (brain and non-brain cells), the quantification of specific surface molecules related to pathological or regeneration processes will be accomplished. If successful, the project will 1) demonstrate the ability of the SPRi biosensor to reveal differences in the relative amount of specific cell-derived EV subpopulations and in their cargo during disease progression and rehabilitation induced recovery, 2) provide support for using the proposed SPRi-based biosensor for the detection and characterization of circulating EVs in order to evaluate the efficacy of rehabilitation protocols and regenerative therapies, 3) identify new biomarkers for the profiling of stroke patients to personalize the rehabilitation therapies.

Read the detailed description

OBJECTIVE: The aim of the project will be the evaluation of the prognostic power of circulating extracellular vesicles (EVs) in the serum of stroke patients. The characterization by SPRi of different families of EVs will allow to evaluate the activation status of the processes of neuroinflammation, neuronal regeneration, angiogenesis and cellular damage to provide a picture of the mechanisms of response to the damage taking place in the patient. These data will be correlated with emerging prognostic markers derived from the literature (Gandolfi et al, 2017) and with the outcome of the rehabilitation evaluated with specific functional and neurological scales that allow accurate profiling of the patient and the evaluation of functional recovery, according to what recently validated in the "Minimum rehabilitation evaluation protocol of the person with Cerebral Stroke Version 2020 - PMIC 2020" by the Italian Society of Physical and Rehabilitative Medicine (SIMFER) (https://springerhealthcare.it/mr/numero/volume-34-n- 2-June-2020 /).

The PMIC 2020 aims to provide each physiatrist / Rehabilitation Team with a uniform tool for the assessment of the person with stroke in the different phases of the disease, from acute hospital to territorial rehabilitation.

Specific objectives will be:

  1. optimization of the SPRi method for the identification of different families of EVs in the serum of healthy subjects; ii) evaluation of the feasibility of the SPRi based method for the characterization of EVs from the serum of stroke patients; iii) preliminary study of the correlation between SPRi data, soluble markers of inflammation and regeneration, patient profiling and rehabilitation outcome at discharge.

IMPACT: The personalization of the rehabilitation plan in relation to the injury suffered and the patient's active response would lead to an increased probability of functional recovery, with benefits in terms of quality of life for the patient and family members, and a reduction in the management costs of the for the National Health System.

SAMPLE COLLECTION: 80 post-stroke patients will be asked to undergo three samples of biological material (10 ml of blood, two 5 ml tubes suitable for serum isolation): the first collection on the second day of hospitalization (t0) at IRCCS S. Maria Nascente (Mialno) or IRCCS Don Gnocchi (Florence) of Fondazioen Don Gnocchi; a second withdrawal at discharge (t1), or approximately 2 months after the first withdrawal. Where possible, a third sampling (t2 - follow up) will be performed 6 months after the event at the IRCCS S. Maria Nascente or at the IRCCS in Florence. 20 healthy subjects will be asked to undergo a single sample of biological material (10 ml of blood, two 5 ml tubes suitable for serum isolation).

EV ISOLATION: The blood sample will be processed for serum separation. The samples will be coded, sterile aliquoted and stored at -80°C at the Laboratory of Nanomedicine and Clinical Biophotonics of IRCCS S. Maria Nascente (Milan) until used.

EVs will be isolated from serum by size exclusion chromatography (qEV; Izon). The actual isolation will be verified with standard techniques, including for example western blot for specific protein markers (CD63, Flotillin 1), Nanoparticle Tracking Analysis or Transmission Electron Microscopy.

SPRi BIOSENSOR: The functionalization of the SPRi chip will be optimized for known markers of apoptotic bodies (Annexin V; index of extent of brain damage) and of EVs from neurons (Ephrin), microglia (IB4 or CD11b), astrocytes (GLAST) and endothelial cells ( CD31). The chip will be also functionalized for the recognition of the Klotho protein (Sahu et al, 2018).

Immobilized EVs will be tested also for the presence on the surface of receptors related to neuronal regeneration (TGFbR1 / 2), microglial activation (TSPO) and angiogenesis (VEGFR-2).

RAMAN ANALYSIS: EVs isolated from patient serum will also be analyzed by Raman spectroscopy according to a protocol already optimized for patients with Parkinson's disease(Gualerzi et al., 2019). Raman analysis will provide information on the biochemical characteristics of the EVs, which can be correlated with the molecular data obtained in SPRi.

ELISA: known markers of inflammation and neuronal activation will be quantified in serum by ELISA assays: inflammatory cytokines (IL6 and TNFa), adipokines (leptin), soluble adhesion molecules (sICAM, sFAS) and growth factors (BDNF).

Correlation between SPRi data, soluble inflammatory and neurotrophic factors will be performed to identify new rehabilitation markers for stroke patients

Being tested
blood withdrawal
Keywords
brain remodeling, extracellular vesicles, biosensor, biophotonics, rehabilitation markers, regeneration, neuroinflammation, stroke biomarkers
Medical subject headings
Stroke, Neuroinflammatory Diseases

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • blood withdrawalOther

    10 ml of blood, two 5 ml tubes suitable for serum isolation. Given the nature and objectives of the study, there are no risks and / o inconveniences of particular importance for the patient since the blood samples will be performed according to the common procedure used in all analysis laboratories. At the end of the collection, in the area where the blood sample was taken, a small bruise may form which will disappear in the following hours, in any case during the collection particular attention will be paid to the subjects being treated with antiplatelet and anticoagulants.

    The study does not include the execution of interventional treatments or therapies.

Study groups in NCT05370105
Study groupRoleWhat they receive
Stroke patients80 post-stroke patients will be asked to undergo three samples of biological material (10 ml of blood): the first collection on the second day of hospitalization at IRCCS S. Maria Nascente (Milano) or at IRCCS Don Gnocchi (Florence) of Fondazioen Don Gnocchi (t0) and a second withdrawal at discharge (t1), or approximately 2 months after the first withdrawal. Where possible, a third sampling (t2 - follow up) will be performed 6 months after the event.
Receives: Other: blood withdrawal
Healthy ControlsThe healthy controls will be volunteers recruited at Fondazione Don Gnocchi, who are not affected by neurodegenerative and cardiovascular diseases and who have not taken anti-inflammatory drugs in the week prior to recruitment.
Receives: Other: blood withdrawal

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change in modified Barthel index after rehabilitation

    modified Barthel index (Shah et al., 1989)

    Measured: 01/11/2020 - 30/03/2022

Secondary outcomes (11)
  1. Extracellular vesicles characterization by SPRi

    EVs will be isolated from serum, characterized by standard procedures and injected on the SPRi biosensor for the differential quantification of multiple EV subfamilies. Secondary antigens will be evaluated on the surface of immobilized EVs.

    Changes in biomarkers expression will be assessed after rehabilitation

    Measured: 25/06/2018 - 30/09/2022

  2. Change in Numeric Rating Scale (NRS) PAIN or PAINAD for non-verbal patient after rehabilitation

    Numeric Rating Scale (NRS) PAIN or PAINAD for non-verbal patient, validated in the literature and already proposed in the PMIC 2020 by SIMFER, will be used for accurate patient profiling and assessment of functional recovery.

    Measured: 25/06/2018 - 30/09/2022

  3. Change in anamnestic and current modified RANKIN scale after rehabilitation

    anamnestic and current modified RANKIN scale, validated in the literature and already proposed in the PMIC 2020 by SIMFER, will be used for accurate patient profiling and assessment of functional recovery.

    Measured: 25/06/2018 - 30/09/2022

  4. Change in NIH-STROKE SCALE after rehabilitation

    NIHSS scale (Brott et al. 1989) , validated in the literature and already proposed in the PMIC 2020 by SIMFER, will be used for accurate patient profiling and assessment of functional recovery.

    Measured: 25/06/2018 - 30/09/2022

  5. Change in Fugl-Meyer Assessment (FMA) scale after rehabilitation

    Fugl-Meyer Assessment (FMA) scale (Fugl-Meyer et al., 1975; Cecchi et al., 2020) , validated in the literature and already proposed in the PMIC 2020 by SIMFER, will be used for accurate patient profiling and assessment of functional recovery.

    Measured: 25/06/2018 - 30/09/2022

  6. Change in Trunk control test after rehabilitation

    Trunk control test (Franchignoni et al, 1997), validated in the literature and already proposed in the PMIC 2020 by SIMFER, will be used for accurate patient profiling and assessment of functional recovery.

    Measured: 25/06/2018 - 30/09/2022

  7. Change in Short Physical Performance Battery (SPPB) after rehabilitation

    SPPB (Guralnik et al, 1994) , validated in the literature and already proposed in the PMIC 2020 by SIMFER, will be used for accurate patient profiling and assessment of functional recovery.

    Measured: 25/06/2018 - 30/09/2022

  8. Change in Functional ambulation classification

    Functional ambulation classification (Jan Mehrholz et al., 2007), validated in the literature and already proposed in the PMIC 2020 by SIMFER, will be used for accurate patient profiling and assessment of functional recovery.

    Measured: 25/06/2018 - 30/09/2022

  9. Change in Addenbrooke's Cognitive Examination scale after rehabilitation

    Addenbrooke's Cognitive Examination (Mathuranath et al., 2000), validated in the literature and already proposed in the PMIC 2020 by SIMFER, will be used for accurate patient profiling and assessment of functional recovery.

    Measured: 25/06/2018 - 30/09/2022

  10. Change in Hospital Anxiety and Depression Scale (HADS) after rehabilitation

    HADS, validated in the literature and already proposed in the PMIC 2020 by SIMFER, will be used for accurate patient profiling and assessment of functional recovery.

    Measured: 25/06/2018 - 30/09/2022

  11. Change in Cumulative illness rating scale (CIRS) after rehabilitation

    CIRS (Linn et al., 1968), validated in the literature and already proposed in the PMIC 2020 by SIMFER, will be used for accurate patient profiling and assessment of functional recovery.

    Measured: 25/06/2018 - 30/09/2022

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted11 May 2022
  2. Study start25 Jun 2018
  3. Primary completion30 Sep 2022
  4. Study completion31 Jul 2023

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Case-control
Time perspective
Prospective
Enrolment
88 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05370105
Sponsor's protocol ID
EXO4STROKE
Acronym
EXO4STROKE
Status last verified
Jan 2025
First submitted
22 Mar 2022
Last updated
3 Feb 2025
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Undecided

Publications

  • Picciolini S, Gualerzi A, Vanna R, Sguassero A, Gramatica F, Bedoni M, Masserini M, Morasso C. Detection and Characterization of Different Brain-Derived Subpopulations of Plasma Exosomes by Surface Plasmon Resonance Imaging. Anal Chem. 2018 Aug 7;90(15):8873-8880. doi: 10.1021/acs.analchem.8b00941. Epub 2018 Jul 17.

    PubMed 29972017
  • Gualerzi A, Picciolini S, Carlomagno C, Terenzi F, Ramat S, Sorbi S, Bedoni M. Raman profiling of circulating extracellular vesicles for the stratification of Parkinson's patients. Nanomedicine. 2019 Nov;22:102097. doi: 10.1016/j.nano.2019.102097. Epub 2019 Oct 21.

    PubMed 31648040
  • Picciolini S, Gualerzi A, Carlomagno C, Cabinio M, Sorrentino S, Baglio F, Bedoni M. An SPRi-based biosensor pilot study: Analysis of multiple circulating extracellular vesicles and hippocampal volume in Alzheimer's disease. J Pharm Biomed Anal. 2021 Jan 5;192:113649. doi: 10.1016/j.jpba.2020.113649. Epub 2020 Sep 23.

    PubMed 33038641
  • Gualerzi A, Picciolini S, Carlomagno C, Roda F, Bedoni M. Biophotonics for diagnostic detection of extracellular vesicles. Adv Drug Deliv Rev. 2021 Jul;174:229-249. doi: 10.1016/j.addr.2021.04.014. Epub 2021 Apr 19.

    PubMed 33887403
  • Gualerzi A, Picciolini S, Roda F, Bedoni M. Extracellular Vesicles in Regeneration and Rehabilitation Recovery after Stroke. Biology (Basel). 2021 Aug 30;10(9):843. doi: 10.3390/biology10090843.

    PubMed 34571720
  • Picciolini S, Mangolini V, Roda F, Montesano A, Arnaboldi F, Liuzzi P, Mannini A, Bedoni M, Gualerzi A. Multiplexing Biosensor for the Detection of Extracellular Vesicles as Biomarkers of Tissue Damage and Recovery after Ischemic Stroke. Int J Mol Sci. 2023 Apr 27;24(9):7937. doi: 10.3390/ijms24097937.

    PubMed 37175644

Questions about this trial

What is this clinical trial studying?

An observational study of Stroke and Rehabilitation, run by Fondazione Don Carlo Gnocchi ETS at 2 sites in Italy.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 3 Feb 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in Italy. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change in modified Barthel index after rehabilitation (time frame: 01/11/2020 - 30/03/2022). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT05370105, which also lists 6 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 3 Feb 2025.

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Extracellular Vesicles as Stroke Biomarkers | AzTrials