Demonstration of Carbonyl Stress on Hair Follicles

Study Overview
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Brief Summary
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In this study, the investigator will try to highlight the presence of carbonyl compounds in the hair follicles of women with telogen effluvium (ET) linked to stress of various origins (fatigue, infectious diseases, emotional stress ...).

Detailed Description
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At the cutaneous level, oxidative stress induces the formation of carbonyl compounds which, by binding to proteins, produce nonfunctional adducts inducing cutaneous aging. Is this mechanism, called Carbonyl stress, also present in the scalp and can it be one of the mechanisms involved in the occurrence of reactive hair loss ? To demonstrate this, samples of hair follicles are made. The proteins are extracted from the samples and then assayed. The oxidized (carbonyl) proteins are labeled with specific fluorescent probes.

Official Title
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Demonstration of the Presence of Carbonyl Stress in the Hair Follicles of Women With Reactive Hair Loss

Conditions
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Effluvium; Telogen

Intervention / Treatment
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* Other: Hair follicles sampling


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Criteria related to the Population : Women aged from 18 to 40 ans (included) Phototype I à IV included, according to Fitzpatrick Classification Hair length 5 cm on the sampling area (centro-parietal part) Last shampoo at least 2 days before the inclusion visit, without application of styling product, care or water between this last shampoo and the inclusion Informed consent signature Criteria related to the studied condition: ET group: hair loss related to various etiologies evaluated by a questionnaire according to the investigator's opinion and positive pull test (at least 3 hair collected per lock of 50 to 60 hair) AND Control group : no hair loss, evaluated by the questionnaire and negative pull test (less than 3 hair collected per lock of 50 to 60 hair) Exclusion Criteria: Criteria related to Population : Menopause Pregnancy, breastfeeding, childbirth for less than 6 months Criteria related to Pathology : For both groups: Alopecia causing hair loss on the upper part of the scalp Dermatological pathology or evolving cutaneous lesion in the scalp Control group only: Chronic unstabilized condition Acute evolving pathology Criteria related to theTreatments : For both groups: Use for at least 1 month of Minoxidil, Aminexil in the 3 months before inclusion or ongoing Systemic treatment affecting hair growth Any treatment or dietary supplement for antioxidant or capillary Control group only: Treatment of general thyroid disorders initiated or modified for less than 3 months prior to inclusion Treatment of anemia if started less than 3 months before inclusion General treatment initiated or modified for less than 3 months prior to inclusion in the study

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 40 Years

Sexes Eligible for Study
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Female

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Basic Science
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: 1 group of women with effluvium télogène 1 group of women without effluvium télogène
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: ET group<br>Sampling : Hair follicles sampling on the scalp in women with Telogene Effluvium | Other: Hair follicles sampling<br>* The follicles will be collected by lock of 10 hair on the scalp (centro-parietal part), to obtain 40 follicles with epithelial sheath<br>|
| Experimental: Control group<br>Sampling: Hair follicles sampling on the scalp in women without Telogene Effluvium | Other: Hair follicles sampling<br>* The follicles will be collected by lock of 10 hair on the scalp (centro-parietal part), to obtain 40 follicles with epithelial sheath<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Biological evaluation | Evaluation of the quantity of carbonyl compounds measured in the hair follicles taken from the two groups. | Visit 1- Day 1 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Safety evaluation | Adverse events evaluation | Visit 1- Day 1 |