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Prospektiv monocentrisk undersøgelse af smag hos patienter med mindre eller større kognitive lidelser såsom Alzheimers gennem analyse af smagsfremkaldte potentialer. (MAPEG)

2. oktober 2026 opdateret af: Centre Hospitalier Universitaire Dijon

Prospektiv monocentrisk undersøgelse af smag hos patienter med mindre eller større kognitive lidelser såsom Alzheimers gennem analyse af smagsfremkaldte potentialer

Approximately 24 million people worldwide suffer from dementia, with Alzheimer's disease being the most common cause. Alzheimer's disease typically progresses in three stages: presymptomatic, prodromal ("early onset" or minor cognitive impairment) and major cognitive impairment with loss of autonomy and significant psycho-behavioral symptoms. Efforts to counteract its expansion are increasing, and there is a need for biomarkers to identify the disease in its earliest stage in order to provide prompt treatment.

Faced with a episodic memory disorder, it is possible, thanks to certain criteria, highlighted by neuroimaging, or by biomarkers obtained by biological analysis of cerebrospinal fluid (during a lumbar puncture), to detect Alzheimer's disease from the prodromal stage, or even earlier. The main limitation of these criteria is their invasive nature. Other non-invasive biomarkers would therefore be useful to help diagnose Alzheimer's disease at an early stage. Gustatory evoked potentials (GEP), a technique for exploring taste sensory pathways, could meet these needs.

Indeed, GEPs are a method of exploring the gustatory sensory pathway based on the recording of cerebral electrical activity by electroencephalography (EEG). It is a painless, accessible, inexpensive and non-invasive technique. The alteration of gustatory functions is present in many neurological conditions, but often takes second place to sensory or motor symptoms. Rare studies have studied taste in patients with Alzheimer's disease, but they have demonstrated, using subjective tests only, an early gustatory impairment linked to a degeneration of the gustatory cortex. It was observed that the performance of subjects with minor or major cognitive impairment was weaker than that of healthy subjects, without the patient being aware of these taste disorders.

The aim of the study is to explore taste functions in patients with minor cognitive impairment, major cognitive impairment such as mild Alzheimer's disease, by comparing them to healthy subjects. For this purpose, we wish to compare the results of subjective taste tests (tasting solutions, especially salty ones, answering food preference questionnaires), parameters of taste evoked potentials recorded by electrodes stuck on the scalp and hormonal parameters obtained by blood sampling, between the three groups of subjects mentioned.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

45

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

      • Dijon, Frankrig, 21000
        • Chu Dijon Bourgogne

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • A person who has given oral consent.
  • For patients with early stage Alzheimer's disease, both the primary caregiver and the patient will need to give oral consent.
  • ADULT
  • Body Mass Index (BMI) < 30 kg/m².
  • Patients meeting the diagnostic criteria for early-stage Alzheimer's disease: imaging (cerebral MRI), neuropsychobiological criteria (consultation with neuropsychological assessment, CSF biomarkers) and CDR (Clinical Dementia Rating Scale) rated at 1 or 1.5 - for the "subjects with early-stage Alzheimer's disease" group
  • Patients meeting the diagnostic criteria for minor cognitive impairment: imaging (brain MRI) and neuropsychological assessment with a CDR scale of 0.5 - for the group "subjects with minor cognitive impairment".
  • Absence of cognitive problems and normal neurological assessment - for the healthy group.
  • Fasting at least 2 hours before PEG measurement

Exclusion Criteria:

  • - A person who is not affiliated to or not a beneficiary of a social security system.
  • Person subject to a measure of legal protection (curatorship, guardianship)
  • Person subject to a judicial safeguard measure
  • Pregnant, parturient or breastfeeding woman
  • Adult unable to express consent or perform cognitive testing.
  • Minor
  • No Caregiver for Mild Alzheimer's Disease Patients
  • Active smoker
  • Diabetes (type 1 or type 2)
  • Taking a treatment that interferes with taste
  • Body Mass Index (BMI) ≥ 30 kg/m2
  • MMS Score <20
  • Cerebral MRI finding another cause of neurocognitive disorder (except for Fazekas 1 vascular lesions accepted).
  • Known COVID-19 infection

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Diagnostisk
  • Tildeling: Ikke-randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Større kognitiv svækkelse

Fasting blood glucose, dosage of acylated and non-acylated ghrelin, leptin, insulin and serotonin.

QPC Cognitive complaint questionnaire, CDR functional autonomy scales and IADL 4 items, MMSE cognitive scores, Dubois 5-word test, clock test, BREF, Isaacs test, BARD naming battery and MADRS depression scale

Scales of taste perceptive intensity, taste pleasure, hunger sensation (visual analogue scales from 0 to 10 cm) and food preferences on the one hand, and on the other hand, subjective tests of taste threshold determination by triangular tests of increasing sugar solution concentrations.

Recording of gustatory evoked potentials

Eksperimentel: Mindre kognitiv svækkelse

Fasting blood glucose, dosage of acylated and non-acylated ghrelin, leptin, insulin and serotonin.

QPC Cognitive complaint questionnaire, CDR functional autonomy scales and IADL 4 items, MMSE cognitive scores, Dubois 5-word test, clock test, BREF, Isaacs test, BARD naming battery and MADRS depression scale

Scales of taste perceptive intensity, taste pleasure, hunger sensation (visual analogue scales from 0 to 10 cm) and food preferences on the one hand, and on the other hand, subjective tests of taste threshold determination by triangular tests of increasing sugar solution concentrations.

Recording of gustatory evoked potentials

Aktiv komparator: Ingen kognitiv svækkelse

Fasting blood glucose, dosage of acylated and non-acylated ghrelin, leptin, insulin and serotonin.

QPC Cognitive complaint questionnaire, CDR functional autonomy scales and IADL 4 items, MMSE cognitive scores, Dubois 5-word test, clock test, BREF, Isaacs test, BARD naming battery and MADRS depression scale

Scales of taste perceptive intensity, taste pleasure, hunger sensation (visual analogue scales from 0 to 10 cm) and food preferences on the one hand, and on the other hand, subjective tests of taste threshold determination by triangular tests of increasing sugar solution concentrations.

Recording of gustatory evoked potentials

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Tidsramme
Amplitude af smagsfremkaldte potentialer
Tidsramme: Efter en fasteperiode på 2 timer
Efter en fasteperiode på 2 timer
Latens af det smagsfremkaldte potentiale
Tidsramme: Efter en fasteperiode på 2 timer
Efter en fasteperiode på 2 timer

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

3. marts 2021

Primær færdiggørelse (Faktiske)

17. juni 2021

Studieafslutning (Faktiske)

17. juni 2021

Datoer for studieregistrering

Først indsendt

22. april 2021

Først indsendt, der opfyldte QC-kriterier

22. april 2021

Først opslået (Faktiske)

27. april 2021

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

6. oktober 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

2. oktober 2026

Sidst verificeret

1. december 2022

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • JACQUIN 2020

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

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