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Analysis of Chlordecone Tissue Concentrations in Patients Treated for Thyroid Surgery at Guadeloupe University Hospital (COTICHLO)

28. maj 2026 opdateret af: Centre Hospitalier Universitaire de la Guadeloupe
Chlordecone, an organochlorine pesticide used in the French Caribbean for several decades, is recognized as an endocrine disruptor. Accumulation in thyroid tissue may be modeled using several factors, including blood chlordecone levels, environmental exposure associated with place of residence, and dietary habits.

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Chlordecone, an organochlorine pesticide, is recognized as an endocrine disruptor. Following ingestion, this molecule is preferentially stored in the liver and, to a lesser extent, in adipose tissue. The development of thyroid goiter may be promoted by exposure to certain substances. Environmental pollutants have been shown to increase TSH secretion, and prolonged exposure to endocrine disruptors affecting the pituitary-thyroid axis has been associated with thyroid neoplasia.

Currently, exposure to chlordecone is assessed through measurement of chlordeconemia (plasma concentration), reflecting exposure during the months preceding sampling and providing an estimate of body burden at the time of assessment. However, chlordecone impregnation in thyroid tissue and adjacent structures has not yet been investigated in humans.

The aim of this study is to model chlordecone concentration in tissues using chlordeconemia, occupational activity, dietary habits, and place of residence.

A biological collection will be established and stored at the Biological Resources Center (CRB) of the University Hospital to support the primary and secondary objectives. Blood, adipose tissue, and thyroid tissue samples will be collected.

The inclusion period will last 11 months, each participant will be involved for 4 months, and the total study duration will be 16 months.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

69

Fase

  • Ikke anvendelig

Kontakter og lokationer

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

Studiekontakt

Studiesteder

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

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria:

  • adult patients hospitalized at the Guadeloupe University Hospital for surgical treatment of thyroid pathology
  • person affiliated to or beneficiaries of a social security system
  • person with free, informed, and written consent signed by the participant and the investigator

Exclusion Criteria:

  • patients subject to a judicial safeguard measure,
  • patient under 18 years old
  • patient without signed consent
  • current pregnancy at the time of inclusion

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Grundvidenskab
  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Andet: Participants undergoing thyroid surgery
Participants undergoing thyroid surgery with prospective collection of blood, thyroid tissue, and adjacent adipose tissue samples for chlordecone concentration assessment and evaluation of exposure-related factors.
Andet: Blood and thyroid tissue collection
Collection of blood, thyroid tissue, and adjacent adipose tissue samples during routine thyroid surgery for measurement of chlordecone concentration and assessment of exposure-related factors.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
chlordecone concentration in the adipose tissue adjacent to the thyroid
Tidsramme: During surgery
Chlordecone concentration measured in adipose tissue adjacent to the thyroid collected during thyroid surgery.
During surgery
Chlordecone concentration in blood
Tidsramme: 1 day before surgery
Chlordecone concentration measured in blood samples collected one day before surgery.
1 day before surgery

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Occupational exposure category
Tidsramme: At enrollment
Occupational activity classified as high or low potential exposure to chlordecone based on professional activity collected through a self-administered questionnaire. Agricultural workers and livestock breeders will be classified as high exposure occupations
At enrollment
Residential environmental exposure assessment
Tidsramme: At enrollment
Environmental exposure assessment based on residential history during the previous 10 years. Residential addresses reported for periods longer than 3 months will be geolocated and linked to soil contamination maps established by CIRAD.
At enrollment
Dietary exposure assessment
Tidsramme: At enrollment
Dietary habits assessed using a self-administered questionnaire collecting information on food consumption patterns and food origin.
At enrollment

Samarbejdspartnere og efterforskere

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

Sponsor

Centre Hospitalier Universitaire de la Guadeloupe

Samarbejdspartnere

Institut Pasteur de Guadeloupe

Efterforskere

  • Ledende efterforsker: suzy Duflo, MD PhD, CHU de la Guadeloupe

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 (Anslået)

1. juli 2026

Primær færdiggørelse (Anslået)

1. november 2027

Studieafslutning (Anslået)

1. november 2027

Datoer for studieregistrering

Først indsendt

21. maj 2026

Først indsendt, der opfyldte QC-kriterier

21. maj 2026

Først opslået (Faktiske)

28. maj 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

1. juni 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

28. maj 2026

Sidst verificeret

1. maj 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • PAP_RIPH2_2025/08

Plan for individuelle deltagerdata (IPD)

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INGEN

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

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Betingelser

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Kosttilskud

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Placeringer

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