Evidence map›Paper›PMID 16819552›Full record

ArticleNature medicine2006

Experimental febrile seizures are precipitated by a hyperthermia-induced respiratory alkalosis.

Sebastian Schuchmann, Dietmar Schmitz, Claudio Rivera, Sampsa Vanhatalo, Benedikt Salmen, Ken Mackie, Sampsa T Sipilä, Juha Voipio, Kai Kaila

Open access · greenAbstract read
In one paragraph

Article in Nature medicine, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 98 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
98citing papers in PubMed, 1 pooled it
7.7field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

98 citing papers in PubMed, 1 synthesis or guideline pooled it, 290 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Trial
  5. Trial
  6. Detecting activity-evoked pH changes in human brain.Proceedings of the National Academy of Sciences of the United States of America · 2012
    Trial
  7. Article
  8. Review
  9. Article
  10. Review
  11. Article
  12. Febrile temperature-regulated TRPV1 in CD4Journal of neuroinflammation · 2025
    Article
  13. Inhalation of 5% COActa epileptologica · 2025
    Article
  14. Article
  15. Article
  16. Review
  17. The Impact of Inflammation on Thermal Hyperpnea: Relevance for Heat Stress and Febrile Seizures.American journal of respiratory cell and molecular biology · 2024
    Article
  18. Article
  19. NHFrontiers in physiology · 2024
    Article
  20. Article

38 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 5 institutions in 3 countries.

Sebastian SchuchmannDepartment of Biological and Environmental Sciences, University of Helsinki, Viikinkaari 1 (POB 65), 00014 Helsinki, Finland.
Dietmar Schmitz
Claudio Rivera
Sampsa Vanhatalo
Benedikt Salmen
Ken Mackie
Sampsa T Sipilä
Juha Voipio
Kai Kaila
University of Helsinki · FICharité - Universitätsmedizin Berlin · DEHelsinki Institute of Physics · FIHelsinki University Hospital · FIUniversity of Washington · US

Funding

Neuronal cannabinoidsR01DA011322 · NIDA · UNIVERSITY OF WASHINGTON · PI MACKIE, KENNETH · 1998 to 2014
$3.4M
CANNABINOID MODULATION OF NEURONAL FUNCTIONK02DA000286 · NIDA · UNIVERSITY OF WASHINGTON · PI MACKIE, KENNETH P. · 1996 to 2005
$711k
NIDA NIH HHS K02 DA000286NIDA NIH HHS R01 DA011322
6 · The paper itself

Abstract

Febrile seizures are frequent during early childhood, and prolonged (complex) febrile seizures are associated with an increased susceptibility to temporal lobe epilepsy. The pathophysiological consequences of febrile seizures have been extensively studied in rat pups exposed to hyperthermia. The mechanisms that trigger these seizures are unknown, however. A rise in brain pH is known to enhance neuronal excitability. Here we show that hyperthermia causes respiratory alkalosis in the immature brain, with a threshold of 0.2-0.3 pH units for seizure induction. Suppressing alkalosis with 5% ambient CO2 abolished seizures within 20 s. CO2 also prevented two long-term effects of hyperthermic seizures in the hippocampus: the upregulation of the I(h) current and the upregulation of CB1 receptor expression. The effects of hyperthermia were closely mimicked by intraperitoneal injection of bicarbonate. Our work indicates a mechanism for triggering hyperthermic seizures and suggests new strategies in the research and therapy of fever-related epileptic syndromes.

Indexed as

Alkalosis, RespiratoryAnimalsBicarbonatesBody TemperatureBrainCarbon DioxideDisease Models, AnimalFemaleFeverPregnancyRatsRats, WistarSeizures, FebrileBicarbonatesCarbon Dioxide

Identifiers

PMID16819552
PMCPMC1698875
OpenAlexW2104784252

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.