Component

Pyridoxine-responsive seizures in infantile hypophosphatasia

Pyridoxine-responsive seizures in infantile hypophosphatasia. Species, exposure and limitations are retained in each linked claim.

1 recorded relationships. Experimental role, claim status and evidence remain attached to each record.

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What it does

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Recorded relationships

What acts on it

  1. Hypophosphatasia is a rare inherited disorder of bone and mineral metabolism caused by loss-of-function mutations in the ALPL gene, characterized by defective bone and tooth mineralisation associated with low serum and bone alkaline phosphatase activity, severe forms may present with neurological problems such as seizures, hypotonia and irritability, and here an infantile hypophosphatasia patient presented with pyridoxine-responsive seizures and a novel homozygous mutation in the ALPL gene was detected, with a limited number of such patients in the literature.

    Experimental context and source evidence
    availability_state
    machinery_impairment Imported condition classification; unverified.
    evidence_span
    {"source_cache": "artifacts/gaba-research/27086862.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "cb18a717a009e567b4480c6826b39f15109745dbb646c752ad66376b6b107854", "start_char": 0, "end_char": 1299, "text_sha256": "cb18a717a009e567b4480c6826b39f15109745dbb646c752ad66376b6b107854"}
    experimental_model
    Case report of an infant with a novel homozygous ALPL mutation
    exposure
    Loss-of-function ALPL mutation with pyridoxine-responsive seizures
    limitations
    A single case report. It shows the association in one patient and cannot establish how often it occurs or the mechanism by which the cofactor becomes unavailable.
    nutrient_topic
    GABA research collection; topical membership is not evidence of a direct clinical effect, and the sign of a GABA response depends on the chloride gradient of the cell it was measured in. · Gamma-aminobutyric acid
    organism
    Human
    plain_language
    A child whose alkaline phosphatase does not work had seizures that only pyridoxine controlled.
    primary_references
    [gb-p27086862] Pyridoxine-Responsive Seizures in Infantile Hypophosphatasia and a Novel Homozygous Mutation in ALPL Gene. (2016). https://pubmed.ncbi.nlm.nih.gov/27086862/ DOI: 10.4274/jcrpe.2798
    tissue_or_cell_type
    Bone and nervous system
    trigger_kind
    machinery_impairment Imported condition classification; unverified.

    GABA: a ligand with no sign of its own, the cofactor that limits its synthesis, the barrier that keeps it out of the brain, and the immune settings where the same molecule protects and harms (2026-09-22) · lines 131–142

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Case report of an infant with a novel homozygous ALPL mutation · source_derived_draft · unverified_draft

    ### gb-losing-the-phosphatase-costs-the-cofactor Hypophosphatasia is a rare inherited disorder of bone and mineral metabolism caused by loss-of-function mutations in the ALPL gene, characterized by defective bone and tooth mineralisation associated with low serum and bone alkaline phosphatase activity, severe forms may present with neurological problems such as seizures, hypotonia and irritability, and here an infantile hypophosphatasia patient presented with pyridoxine-responsive seizures and a novel homozygous mutation in the ALPL gene was detected, with a limited number of such patients in the literature. Condition category: machinery_impairment nutrient_topic: GABA research collection; topical membership is not evidence of a direct clinical effect, and the sign of a GABA response depends on the chloride gradient of the cell it was measured in. plain_language: A child whose alkaline phosphatase does not work had seizures that only pyridoxine controlled. organism: Human tissue_or_cell_type: Bone and nervous system experimental_model: Case report of an infant with a novel homozygous ALPL mutation limitations: A single case report. It shows the association in one patient and cannot establish how often it occurs or the mechanism by which the cofactor becomes unavailable. exposure: Loss-of-function ALPL mutation with pyridoxine-responsive seizures evidence_span: {"source_cache": "artifacts/gaba-research/27086862.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "cb18a717a009e567b4480c6826b39f15109745dbb646c752ad66376b6b107854", "start_char": 0, "end_char": 1299, "text_sha256": "cb18a717a009e567b4480c6826b39f15109745dbb646c752ad66376b6b107854"} [gb-p27086862] Pyridoxine-Responsive Seizures in Infantile Hypophosphatasia and a Novel Homozygous Mutation in ALPL Gene. (2016). https://pubmed.ncbi.nlm.nih.gov/27086862/ DOI: 10.4274/jcrpe.2798
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