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According to the WHO, major depressive disorders have become the second worldwide cause of disability. Treatment, long-term medication, leads to frequent resistance (up to 40%).
Establishing a cerebral molecular signature of depression is not feasible in humans (need for cerebral samples). The alternative is to use peripheral biological samples (blood, urine, saliva).
Metabolomic is the integrated and quantitative study of all the metabolites of a biological system. This aims to define the metabolic status of an organism for a particular condition.
Metabolites are derived from biological extracts (cells, tissues, serum, plasma, urine, etc.) and are detected by:
This approach allows the discovery of biomarkers that best describe the status of a disease for better understanding and are usable in a context of individualized medicine, with effects on clinical practice and management.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Depressive patient | Experimental | olfactive tests ; blood test ; optional: Tissue Pulsatility imaging ; optional: Collection of faeces |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| olfactive tests | Other | olfactive tests: odor identification, odor discrimination and olfactory threshold |
|
| Measure | Description | Time Frame |
|---|---|---|
| metabolic print of blood | Metabolome of blood | 2 months |
| Measure | Description | Time Frame |
|---|---|---|
| olfactive identification | Olfactive response: odor identification | 2 months |
| olfactive discrimination | Olfactive response: odor discrimination |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Wissam El-Hage, PhD | CHRU TOURS | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| CHU Tours | Tours | 37044 | France |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 34995994 | Result | Desmidt T, Dujardin PA, Brizard B, Remenieras JP, Gissot V, Dufour-Rainfray D, Atanasova B, Kazour F, Belzung C, Camus V, El-Hage W. Decrease in ultrasound Brain Tissue Pulsations as a potential surrogate marker of response to antidepressant. J Psychiatr Res. 2022 Feb;146:186-191. doi: 10.1016/j.jpsychires.2021.12.056. Epub 2022 Jan 3. |
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| ID | Term |
|---|---|
| D003863 | Depression |
| ID | Term |
|---|---|
| D001526 | Behavioral Symptoms |
| D001519 | Behavior |
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| ID | Term |
|---|---|
| D006403 | Hematologic Tests |
| ID | Term |
|---|---|
| D019411 | Clinical Laboratory Techniques |
| D019937 | Diagnostic Techniques and Procedures |
| D003933 | Diagnosis |
| D008919 | Investigative Techniques |
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| blood test | Biological | one sample of 4mL |
|
| Collection of faeces | Biological | Collection of faeces by patient at home - optional |
|
| Tissue Pulsatility imaging | Device | Ultrasound exploration of brain pulsatility - optional |
|
| 2 months |
| Olfactory threshold | Olfactive response: olfactory threshold | 2 months |
| Microbiote of faeces | Bacteria of faeces | 2 months |
| Maximal measures of brain pulsatility | Maximal brain pulsatility | 2 months |
| Mean measures of brain pulsatility | Mean brain pulsatility | 2 months |
| Metabolic print of faces | Metabolome of faeces | 2 months |