Overview
This Int J Immunopathol Pharmacol pilot study from the Italian SNAS-research consortium (Campi Salentina, Gemelli Rome, Spedali Civili Brescia, G. d’Annunzio Chieti, Lofarma Milan) demonstrates that oral hyposensitization to nickel (NiOHT) — graduated oral dosing of nickel sulphate from sub-nanogram to microgram doses over months — produces both clinical improvement and measurable immunological remodeling in SNAS. 36 SNAS patients followed the protocol; both Th1 (IFN-gamma) and Th2 (IL-13, IL-5) cytokine responses to ex-vivo nickel challenge decreased significantly. The paper establishes oral hyposensitization as an alternative to lifelong low-nickel-diet adherence and provides mechanistic immunology supporting the SNAS framework.
Key numbers
Cytokine reductions after NiOHT treatment in SNAS patients:
- IFN-gamma (Th1): -55.3 percent
- IL-13 (Th2): -58.6 percent
- IL-5 (Th2): -31.2 percent
Both Th1 and Th2 pathways are implicated in SNAS; NiOHT downregulates both, consistent with classical oral-tolerance induction mechanisms.
Methods (brief)
Graduated oral nickel sulphate administration starting at very low doses (sub-nanogram) and titrating upward to maintenance over approximately 6 months. Cytokine responses measured by ex-vivo nickel-stimulated peripheral blood mononuclear cell culture at baseline and post-treatment.
Implications
- Certification: Clinical-trial evidence for an alternative to low-Ni-diet for SNAS patients; relevant to vulnerable-population guidance.
- Microbiome / immunology: Direct immunological remodeling of nickel-specific T-cell response; complements the Maier and Benoit 2019 pathogen-virulence framing by addressing the host-immunology side.
- Courses: Standard reference for nickel oral hyposensitization protocol.
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Update history
The five most recent substantive edits to this page, classified major (evidence or structure moved), correction (a published value or statement was wrong and has been fixed), or minor (narrative rewritten without changing the underlying evidence). Each description is derived from what the edit did to this page; the linked commit is the authoritative record, routine regeneration passes are excluded, and the full version history lives in git. When DOI minting comes online (see schema docs), each entry below will also link to a version-pinned DataCite DOI.
| Commit | Date | Change | Description |
|---|---|---|---|
| a8052bb | 2026-08-09 | major | 1 source added; 6 sections added; narrative text revised |