<i>Euphorbia myrsinites</i> Sap-Induced Phytodermatitis: A Prototype of Irritant Contact Dermatitis?
Why this work is in the frame
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Bibliographic record
Abstract
BACKGROUND: A hallmark of Euphorbia myrsinites (EM), a member of the widespread perennial Euphorbia species, is the extrusion of a poisonous, latex-like sap irritant to the skin and eye after contact. The exact mechanisms underlying these effects have not been unraveled so far. OBJECTIVES: The aims of the study were to allocate EM sap-induced phytodermatitis to irritant or allergic contact dermatitis (ACD) and to investigate mechanism(s) causing keratinocyte damage. METHODS: Cutaneous effects of EM sap on healthy human skin were investigated by clinical scoring and reflectance confocal microscopy analyses and compared with ACD. In addition, the effects of sap exposure to keratinocytes were analyzed in vitro using histological analyses and flow cytometry. CONCLUSIONS: We report on 2 cases of EM sap-induced phytodermatitis. Patch testing with fresh EM sap induced dermatitis in 100% of the tested sites with a clinical course following a decrescendo pattern. Compared with ACD, the lesional phenotype was more severe and epidermal disruption was more pronounced. Exposure of human skin tissues and cultivated keratinocytes to EM sap in vitro resulted in a dose-dependent increase in keratinocyte apoptosis. The reported findings support the primarily toxic irritant nature of EM sap-induced phytodermatitis. The contribution of ingenol mebutate to (nontoxic) proinflammatory effects remains to be elucidated.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it