- ICH GCP
- Rejestr badań klinicznych w USA
- Badanie kliniczne NCT06661564
Identyfikacja biomarkerów diagnostycznych we łzach pacjentów z chorobą Alzheimera: badanie pilotażowe COG-EYE (COG-EYE)
Identification De Biomarqueurs Diagnostiques Dans Les Larmes De Students Atteints De Maladie D'Alzheimer: L'étude Pilote COG-EYE
The diagnosis of Alzheimer's disease (AD) relies on the detection of protein biomarkers, particularly in cerebrospinal fluid (e.g., Aβ and phosphorylated Tau) or through brain imaging. The invasive nature of lumbar puncture and the numerous contraindications have driven the search for early and reliable diagnostic biomarkers for AD.
Human tears are an accessible biological fluid that has proven relevant in the biomarker search strategy for both ophthalmological and systemic diseases, especially neurodegenerative conditions. Advances in methods for low-volume analysis have facilitated the identification of tear biomarkers. Total tau has been reported as elevated in the tears of patients with AD compared to controls (n=65). Additionally, metabo-lipidomic analyses offer several advantages (accessibility, non-invasiveness, reproducibility) and also appear promising as a diagnostic tool for systemic and neurodegenerative diseases, such as amyotrophic lateral sclerosis. This supports the relevance of comparing both AD proteins biomarkers and metabo-lipidomic signatures in the tears of patients with AD (Mild Cognitive Impairement (MCI) and dementia) with healthy controls.
Przegląd badań
Status
Warunki
Typ studiów
Zapisy (Szacowany)
Faza
- Nie dotyczy
Kontakty i lokalizacje
Kontakt w sprawie studiów
- Nazwa: Victoire LEROY, MD
- Numer telefonu: 0247477693
- E-mail: victoire.leroy@univ-tours.fr
Kopia zapasowa kontaktu do badania
- Nazwa: Raoul Kanav KHANNA, MD, PhD
- E-mail: raoul.khanna@univ-tours.fr
Lokalizacje studiów
-
-
France
-
Tours, France, Francja, 37044
- Rekrutacyjny
- CHRU de Tours
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Główny śledczy:
- Victoire LEROY, MD
-
Kontakt:
- Victoire LEROY
- Numer telefonu: +332 47 47 76 93
- E-mail: victoire.leroy@univ-tours.fr
-
Kontakt:
- Coralie TAILLEBUIS
- Numer telefonu: +332 47 47 39 09
- E-mail: cpcq@chu-tours.fr
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-
Kryteria uczestnictwa
Kryteria kwalifikacji
Wiek uprawniający do nauki
Akceptuje zdrowych ochotników
Płeć kwalifikująca się do nauki
Opis
Inclusion Criteria:
- Age ≥18 years
- Participant affiliated in French Social Security scheme
- Informed and written consent from the participant
Exclusion Criteria:
- Pregnant or breastfeeding woman
- Participant under judicial protection measures
- Participant under guardianship or curatorship
- Contraindications to participation in the research:
Other neurodegenerative disease Any eye drops or treatment that may interfere with tear production Occasional or permanent contact lens use within the last 3 months Eye surgery ≤3 months Any ocular pathology other than refractive errors, oculomotor disorders, amblyopia Any general pathology other than AD with ocular implications
-Inability to perform tear collection
Plan studiów
Jak projektuje się badanie?
Szczegóły projektu
- Główny cel: Diagnostyczny
- Przydział: Nielosowe
- Model interwencyjny: Przydział równoległy
- Maskowanie: Brak (otwarta etykieta)
Broń i interwencje
Grupa uczestników / Arm |
Interwencja / Leczenie |
|---|---|
|
Aktywny komparator: Patients with AD dementia
Patient ≥ 18 years old with AD at a major stage according to the 2018 NIA-AA criteria (dementia) |
Collection of a tear volume of (i) 2 x 5µL using glass microcapillary tubes and (ii) 12µL using Schirmer strips after the instillation of anesthetic eye drops for metabo-lipidomic analysis and multiplexing of protein markers |
|
Aktywny komparator: Patients with AD Mild Cognitive Impaiment (MCI)
Patient ≥ 18 years old with AD at a minor stage according to the 2018 NIA-AA criteria (Mild Cognitive Impairment) |
Collection of a tear volume of (i) 2 x 5µL using glass microcapillary tubes and (ii) 12µL using Schirmer strips after the instillation of anesthetic eye drops for metabo-lipidomic analysis and multiplexing of protein markers Collection of a blood sample (5 mL) for blood biomarkers analysis. |
|
Pozorny komparator: Healthy controls
Participants ≥ 18 years old with no known central neurological pathology, no cognitive decline, and matched by age (± 2 years) and sex with a patient from AD-MCI group |
Collection of a tear volume of (i) 2 x 5µL using glass microcapillary tubes and (ii) 12µL using Schirmer strips after the instillation of anesthetic eye drops for metabo-lipidomic analysis and multiplexing of protein markers |
Co mierzy badanie?
Podstawowe miary wyniku
Miara wyniku |
Opis środka |
Ramy czasowe |
|---|---|---|
|
Concentration of total Tau proteins in basal tears of patients with AD vs healthy volunteers
Ramy czasowe: At inclusion
|
12μL of tears will be collected using Schirmer strips after instillation of an anaesthetic eye drop. A multiplex analysis for the detection of protein of interest |
At inclusion
|
|
Concentration of phosphorylated Tau proteins in basal tears of patients with AD vs healthy volunteers
Ramy czasowe: At inclusion
|
12μL of tears will be collected using Schirmer strips after instillation of an anaesthetic eye drop. A multiplex analysis for the detection of protein of interest |
At inclusion
|
|
Concentration of Amyloid β 1-40 proteins in basal tears of patients with AD vs healthy volunteers
Ramy czasowe: At inclusion
|
12μL of tears will be collected using Schirmer strips after instillation of an anaesthetic eye drop. A multiplex analysis for the detection of protein of interest |
At inclusion
|
|
Concentration of Amyloid β 1-42 in basal tears of patients with AD vs healthy volunteers
Ramy czasowe: At inclusion
|
12μL of tears will be collected using Schirmer strips after instillation of an anaesthetic eye drop. A multiplex analysis for the detection of protein of interest |
At inclusion
|
|
Lipids in basal tears of patients with AD vs healthy volunteers
Ramy czasowe: At inclusion
|
Collection of tears (5μL) using a glass micropipette without local anaesthetic. Lipids in tears of patients with AD vs healthy volunteers |
At inclusion
|
|
Metabolites in basal tears of patients with AD vs healthy volunteers
Ramy czasowe: At inclusion
|
Collection of tears (5μL) using a glass micropipette without local anaesthetic. Metabolites in tears of patients with AD vs healthy volunteers |
At inclusion
|
Miary wyników drugorzędnych
Miara wyniku |
Opis środka |
Ramy czasowe |
|---|---|---|
|
Concentration of total Tau proteins in tears vs plasma and Cerebral spinal fluid (CSF) within patients with AD-MCI
Ramy czasowe: At inclusion
|
12μL of tears will be collected using Schirmer strips after instillation of an anaesthetic eye drop. A multiplex analysis for the detection of protein of interest |
At inclusion
|
|
Concentration of phosphylated Tau proteins in tears vs plasma and Cerebral spinal fluid (CSF) within patients with AD-MCI
Ramy czasowe: A inclusion
|
12μL of tears will be collected using Schirmer strips after instillation of an anaesthetic eye drop. A multiplex analysis for the detection of protein of interest |
A inclusion
|
|
Concentration of Amyloid β 1-40 proteins in tears vs plasma and Cerebral spinal fluid (CSF) within patients with AD-MCI
Ramy czasowe: A inclusion
|
12μL of tears will be collected using Schirmer strips after instillation of an anaesthetic eye drop. A multiplex analysis for the detection of protein of interest |
A inclusion
|
|
Concentration of Amyloid β 1-42 proteins in tears vs plasma and Cerebral spinal fluid (CSF) within patients with AD-MCI
Ramy czasowe: A inclusion
|
12μL of tears will be collected using Schirmer strips after instillation of an anaesthetic eye drop. A multiplex analysis for the detection of protein of interest |
A inclusion
|
|
Lipids in tears vs plasma and Cerebral spinal fluid (CSF) within patients with AD-MCI
Ramy czasowe: At inclusion
|
Collection of tears (5μL) using a glass micropipette without local anaesthetic. Identification of lipids in basal tears using liquid chromatography-mass spectrometry. |
At inclusion
|
|
Metabolites in tears vs plasma and Cerebral spinal fluid (CSF) within patients with AD-MCI
Ramy czasowe: At inclusion
|
Collection of tears (5μL) using a glass micropipette without local anaesthetic. Identification of metabolites in basal tears using liquid chromatography-mass spectrometry. |
At inclusion
|
|
Concentration of total Tau proteins in basal tears of patients with AD-dementia vs patients with AD-MCI
Ramy czasowe: At inclusion
|
12μL of tears will be collected using Schirmer strips after instillation of an anaesthetic eye drop. A multiplex analysis for the detection of protein of interest |
At inclusion
|
|
Concentration of phosphorylated Tau proteins in basal tears of patients with AD-dementia vs patients with AD-MCI
Ramy czasowe: At inclusion
|
12μL of tears will be collected using Schirmer strips after instillation of an anaesthetic eye drop. A multiplex analysis for the detection of protein of interest |
At inclusion
|
|
Concentration of Amyloid β 1-40 proteins in basal tears of patients with AD-dementia vs patients with AD-MCI
Ramy czasowe: At inclusion
|
12μL of tears will be collected using Schirmer strips after instillation of an anaesthetic eye drop. A multiplex analysis for the detection of protein of interest |
At inclusion
|
|
Concentration of Amyloid β 1-42 proteins in basal tears of patients with AD-dementia vs patients with AD-MCI
Ramy czasowe: At inclusion
|
12μL of tears will be collected using Schirmer strips after instillation of an anaesthetic eye drop. A multiplex analysis for the detection of protein of interest |
At inclusion
|
|
Lipids in basal tears of patients with AD-dementia vs patients with AD-MCI
Ramy czasowe: At inclusion
|
Collection of tears (5μL) using a glass micropipette without local anaesthetic. Identification of lipids in basal tears using liquid chromatography-mass spectrometry. |
At inclusion
|
|
Metabolites in basal tears of patients with AD-dementia vs patients with AD-MCI
Ramy czasowe: At inclusion
|
Collection of tears (5μL) using a glass micropipette without local anaesthetic. Identification of metabolites in basal tears using liquid chromatography-mass spectrometry. |
At inclusion
|
Współpracownicy i badacze
Sponsor
Śledczy
- Dyrektor Studium: Victoire LEROY, MD, CHRU de Tours
Daty zapisu na studia
Główne daty studiów
Rozpoczęcie studiów (Rzeczywisty)
Zakończenie podstawowe (Szacowany)
Ukończenie studiów (Szacowany)
Daty rejestracji na studia
Pierwszy przesłany
Pierwszy przesłany, który spełnia kryteria kontroli jakości
Pierwszy wysłany (Rzeczywisty)
Aktualizacje rekordów badań
Ostatnia wysłana aktualizacja (Rzeczywisty)
Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości
Ostatnia weryfikacja
Więcej informacji
Terminy związane z tym badaniem
Słowa kluczowe
Dodatkowe istotne warunki MeSH
- Choroby mózgu
- Choroby ośrodkowego układu nerwowego
- Choroby Układu Nerwowego
- Zaburzenia psychiczne
- Rany i urazy
- Zaburzenia neurokognitywne
- Demencja
- Tauopatie
- Choroby neurodegeneracyjne
- Choroba Alzheimera
- Rany szarpane
- Aminokwasy, peptydy i białka
- Białka tkanek nerwowych
- Białka
- Białka mikrotubul
- Białka cytoszkieletowe
- Białka związane z mikrotubulą
- Białka tau
Inne numery identyfikacyjne badania
- DR240140
Plan dla danych uczestnika indywidualnego (IPD)
Planujesz udostępniać dane poszczególnych uczestników (IPD)?
Opis planu IPD
Qualified researchers may obtain access to all deidentified data in COG-EYE on a substantial request.
Informacje o lekach i urządzeniach, dokumenty badawcze
Bada produkt leczniczy regulowany przez amerykańską FDA
Bada produkt urządzenia regulowany przez amerykańską FDA
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