Analysis of Chlordecone Tissue Concentrations in Patients Treated for Thyroid Surgery at Guadeloupe University Hospital (COTICHLO)
Studieöversikt
Status
Betingelser
Intervention / Behandling
Detaljerad beskrivning
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.
Studietyp
Inskrivning (Beräknad)
Fas
- Inte tillämpbar
Kontakter och platser
Studiekontakt
- Namn: mélanie petapermal, Master degree
- Telefonnummer: +590 +590590934667
- E-post: melanie.petapermal@chu-guadeloupe.fr
Studieorter
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Les Abymes, Guadeloupe, 97159
- CHU de la Guadeloupe
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Kontakt:
- suzy Duflo, MD PhD
- E-post: suzy.duflo@chu-guadeloupe.fr
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Deltagandekriterier
Urvalskriterier
Åldrar som är berättigade till studier
- Vuxen
- Äldre vuxen
Tar emot friska volontärer
Beskrivning
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
Hur är studien utformad?
Designdetaljer
- Primärt syfte: Grundläggande vetenskap
- Tilldelning: N/A
- Interventionsmodell: Enskild gruppuppgift
- Maskning: Ingen (Open Label)
Vapen och interventioner
Deltagargrupp / Arm |
Intervention / Behandling |
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Övrig: 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.
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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.
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Vad mäter studien?
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
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chlordecone concentration in the adipose tissue adjacent to the thyroid
Tidsram: During surgery
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Chlordecone concentration measured in adipose tissue adjacent to the thyroid collected during thyroid surgery.
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During surgery
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Chlordecone concentration in blood
Tidsram: 1 day before surgery
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Chlordecone concentration measured in blood samples collected one day before surgery.
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1 day before surgery
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Sekundära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
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Occupational exposure category
Tidsram: At enrollment
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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
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At enrollment
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Residential environmental exposure assessment
Tidsram: At enrollment
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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.
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At enrollment
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Dietary exposure assessment
Tidsram: At enrollment
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Dietary habits assessed using a self-administered questionnaire collecting information on food consumption patterns and food origin.
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At enrollment
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Samarbetspartners och utredare
Samarbetspartners
Utredare
- Huvudutredare: suzy Duflo, MD PhD, CHU de la Guadeloupe
Studieavstämningsdatum
Studera stora datum
Studiestart (Beräknad)
Primärt slutförande (Beräknad)
Avslutad studie (Beräknad)
Studieregistreringsdatum
Först inskickad
Först inskickad som uppfyllde QC-kriterierna
Första postat (Faktisk)
Uppdateringar av studier
Senaste uppdatering publicerad (Faktisk)
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senast verifierad
Mer information
Termer relaterade till denna studie
Nyckelord
Ytterligare relevanta MeSH-villkor
Andra studie-ID-nummer
- PAP_RIPH2_2025/08
Plan för individuella deltagardata (IPD)
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