BL-RQ-004 · Open
Is there a human measurement that distinguishes mast-cell mediated barrier disruption from barrier disruption of other causes?
Without a discriminating measurement, mast-cell involvement in barrier failure remains untestable in individuals.
Relation to the Host Capacity Model
The mast cell–barrier–matrix layer of HCM currently has no individual-level measurement path.
Measurements required to answer it
- A validated barrier permeability measure
- A validated mediator measure
Confounders
- Assay specificity problems
- Diurnal and episodic mediator variation
Decision criteria
Demonstration that a mediator measure separates the two mechanisms with acceptable specificity.
What would count against the Host Capacity Model
No measurement separates them, so the distinction stays theoretical.
Registered claims this question bears on
No claim in the registry corresponds to this question with enough confidence to link it. The mapping is left empty rather than guessed.
Entities
- Serum zonulin (commercial assay) — A commercial assay marketed as a measure of intestinal permeability. Published validation work reports that widely used kits do not specifically detect pre-haptoglobin-2.
Cite this question
Attallah, M. BL-RQ-004: Is there a human measurement that distinguishes mast-cell mediated barrier disruption from barrier disruption of other causes? BiomeLogic research question registry. https://biomelogic.net/research-questions/BL-RQ-004
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