| Gene Symbol | BIOMARKER |
| Common polymorphism | 24-bp duplication in exon 10 (approximately 35% of population are homozygous deficient) |
| Physiological substrate | Despite enzymatic activity, chitin is not expressed in humans, suggesting vestigial function |
| Synthetic substrates | Used in laboratory assays (4-Methylumbelliferyl chitotrioside) |
| Activity measurement | Fluorometric detection of released 4-methylumbellifone |
| Induced by | IL-6, IL-1β, TNF-α, IFN-γ |
| Suppressed by | IL-4, IL-10, glucocorticoids |
| Amplification | Autocrine and paracrine signaling enhances expression |
| Microglial phenotype | Associated with the M2 (alternatively activated) phenotype in early disease stages |
| Temporal pattern | Elevated in early neuroinflammation, may decrease in later stages |
| Regional specificity | Higher expression in regions with active pathology |
| Chronic microglial activation | Ongoing immune response to protein aggregates |
| Disease activity | Levels correlate with rate of disease progression |
| Therapeutic target engagement | May reflect response to anti-inflammatory treatments |
| KG Connections | 1 knowledge graph edges |
| Databases | GeneCardsUniProtNCBI GeneHPASTRING |
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