Histamine, Neuroinflammation and Neurodevelopment: A Review.
Level 5 - mechanism / opinion, no new human data
Narrative review of preclinical mechanisms and clinical associations without systematic search methodology
PubMed 34335160 · doi:10.3389/fnins.2021.680214
What was done
This narrative review synthesized literature examining the roles of neuronal and non-neuronal (e.g., mast cell) histamine in neuroinflammation, corticostriatal circuit development, and neurodevelopmental conditions such as Tourette's syndrome and obsessive-compulsive disorder. The authors also examined preclinical and clinical evidence on the efficacy of histamine receptor modulators.
What was found
The abstract reports no quantitative metrics or effect sizes. It qualitatively describes associations between reduced histamine synthesis and altered corticostriatal development in Tourette's syndrome and obsessive-compulsive disorder, suggests histamine deficiency increases susceptibility to proinflammatory insults, and notes emerging in vitro and in vivo evidence that non-neuronal histamine influences microglial-mediated neuroinflammation.
Why it matters
The review connects neuroimmunology and neurodevelopment, proposing that early modulation of neuronal and non-neuronal histamine pathways could offer novel therapeutic targets for neurodevelopmental disorders.
Limits
The paper provides no primary experimental data or systematic search protocol. Most supporting evidence is derived from limited in vitro and animal models, and clinical translation of histamine receptor modulators remains early and descriptive.
Cited by
- supports Histamine, glutamate, and sulfur dysregulation are linked to OCD, depression, ADHD, Tourette's syndrome, and autism spectrum disorder.