急性大麻中毒時の幼児の毛髪汚染 (INTERACTION)
急性大麻中毒時の幼児の毛髪における汗による汚染
Hair analysis in pediatric cannabis intoxication is limited by possible sudoral self-contamination, especially in young children due to hair porosity. However, adult studies show no THC-COOH in sweat, challenging this hypothesis. THC-COOH presence in sweat has to this day never been studied in young children. Its absence would help assess the reliability of hair testing for prior exposure. Thus, our main objective is to describe whether THC-COOH can be detected in sweat following cannabis intoxication using gold standard techniques.
調査の概要
状態
状態
条件
条件
介入・治療
介入・治療
詳細な説明
In cases of pediatric cannabis intoxication, hair analysis is frequently used to assess prior exposure. However, in young children, especially under 3 years old, hair porosity raises concerns about external contamination, notably through sweat. It has been hypothesized that cannabinoids could migrate into the hair via sweat shortly after ingestion, leading to self-contamination and potentially compromising the interpretation of results. This is particularly relevant when trying to distinguish acute ingestion from chronic exposure. In adults, several studies have shown no detectable sudoral concentrations of THC-COOH, the main metabolite used in hair testing, suggesting that such contamination is unlikely. However, due to developmental differences in pharmacokinetics, these findings cannot yet be extrapolated to children. Confirming the absence of THC-COOH in pediatric sweat would strengthen the validity of hair testing as a retrospective exposure tool.
This study would be performed on young children admitted to the emergency department for accidental cannabis intoxication. Sweat would be collected at inclusion using a similar procedure to a sweat test by stimulating sudation using pilocarpine and mild electrical stimulation. Cannabinoids would be analyzed by liquid chromatography coupled with mass spectrometry (LC-MS), which is the gold standard technique.
Follow-up would be simple, consisting in a single consultation 1 to 2 months following inclusion. This consultation is part of the usual medical care for young children following cannabis intoxication.
研究の種類
研究の種類
入学 (推定)
入学
段階
段階
- 適用できない
連絡先と場所
研究連絡先
研究連絡先
- 名前:Nadège Algans
- 電話番号:0561777204
- メール:algans.n@chu-toulouse.fr
研究場所
-
-
-
Toulouse、フランス
- 募集
- Centre Hospitalier Universitaire
-
コンタクト:
- Thomas Lanot
-
主任研究者:
- Thomas LANOT
-
-
参加基準
適格基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria:
- Child admitted to the Specialized Emergency Pole (POSU) and pediatric medico-surgical emergencies for acute cannabis intoxication.
- Child older than 3 months and younger than 3 years.
- Holders of parental authority, affiliated with or beneficiaries of a social security system.
Exclusion Criteria:
- History of cannabis intoxication identified during the interview and/or consultation of the medical record.
- Contraindication to sweat sampling (described in section 6).
- Absence of hair and/or hair length < 1 cm at the time of inclusion.
- Ongoing breastfeeding (exclusive and mixed).
- Inability to provide study-related informations to the holders of parental authority.
研究計画
研究はどのように設計されていますか?
デザインの詳細
- 主な目的:診断
- 割り当て:なし
- 介入モデル:単一グループの割り当て
- マスキング:なし(オープンラベル)
アーム数
武器と介入
参加者グループ / アーム参加者グループ / アーム |
介入・治療介入・治療 |
|---|---|
|
実験的:intoxicated children
children with an intoxication of cannabis admitted to emergency |
Sweat sampling using the "sweat test" method, performed after skin stimulation with pilocarpine and a low electrical stimulation. Hair sampling during the follow-up consultation. Sweat, and capillary assays of THC and its main metabolites |
この研究は何を測定していますか?
主要な結果の測定
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Acide 11-nor-9-carboxy-THC (THC-COOH) concentrations in sweat collected during the first 24 hours following emergency admission.
時間枠:Day 1
|
concentration measured in sudoral sample (in µg/l) |
Day 1
|
二次結果の測定
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Tétrahydrocannabinol (THC), 11-hydroxy-tétrahydrocannabinol (OH-THC) and THC-COOH measured in blood and sweat collected during the first 24 hours following emergency admission.
時間枠:Day 1
|
Determination whether blood and sweat THC, OH-THC and THC-COOH concentrations, if present, are correlated following intoxication (in µg/l) |
Day 1
|
|
THC, OH-THC and THC-COOH measured in two hair samples.
時間枠:day 1 and the day of follow-up visit at month 1 or month 2
|
Describing the evolution of THC, OH-THC and THC-COOH hair concentrations in young children (in µg/l) |
day 1 and the day of follow-up visit at month 1 or month 2
|
協力者と研究者
協力者
協力者
捜査官
捜査官
- 主任研究者:Thomas Lanot、University Hospital of Toulouse
研究記録日
主要日程の研究
研究開始 (実際)
研究開始
一次修了 (推定)
一次修了
研究の完了 (推定)
研究の完了
試験登録日
最初に提出
最初に提出
QC基準を満たした最初の提出物
QC基準を満たした最初の提出物
最初の投稿 (実際)
最初の投稿
学習記録の更新
投稿された最後の更新 (実際)
投稿された最後の更新
QC基準を満たした最後の更新が送信されました
QC基準を満たした最後の更新が送信されました
最終確認日
最終確認日
詳しくは
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