Evidence map›Paper›PMID 19332335›Full record

ReviewNeurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics2009

Neurosteroid replacement therapy for catamenial epilepsy.

Doodipala S Reddy, Michael A Rogawski

Open access · bronzeAbstract readReview
In one paragraph

Review in Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 57 papers.

0numbers the graph read from it
0cells of the map it votes in
57citing papers in PubMed
6.5field-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

57 citing papers in PubMed, 141 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Established and emerging GABAFrontiers in pharmacology · 2024
    Review
  5. Article
  6. Review
  7. Review
  8. Review
  9. Review
  10. Does Stress Trigger Seizures? Evidence from Experimental Models.Current topics in behavioral neurosciences · 2022
    Article
  11. Review
  12. Review
  13. Review
  14. Article
  15. Review
  16. Progesterone receptor activation regulates seizure susceptibility.Annals of clinical and translational neurology · 2019
    Article
  17. Review
  18. Neurosteroid regulation of GABABrain research · 2019
    Review
  19. Review
  20. Crystal structures of a GABANature structural & molecular biology · 2017
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors at 2 institutions in 1 country.

Doodipala S ReddyDepartment of Neuroscience and Experimental Therapeutics, College of Medicine, Texas A&M System Health Science Center, College Station, Texas 77843, USA. reddy@medicine.tamhsc.edu
Michael A Rogawski
Texas A&M Health Science Center · USUniversity of California, Davis · US

Funding

Progesterone Receptors and Seizure SusceptibilityR01NS051398 · NINDS · TEXAS A&M UNIVERSITY HEALTH SCIENCE CTR · PI REDDY, DOODIPALA SAMBA · 2007 to 2011
$1.5M
Neuroactive Steroid Therapy of Catamenial EpilepsyR21NS052158 · NINDS · TEXAS A&M UNIVERSITY HEALTH SCIENCE CTR · PI REDDY, DOODIPALA SAMBA · 2006 to 2007
$324k
Intramural NIH HHS NIH0010170155NINDS NIH HHS 7R21NS052158-03NINDS NIH HHS R01 NS051398NINDS NIH HHS R21 NS052158
6 · The paper itself

Abstract

Perimenstrual catamenial epilepsy, the cyclical occurrence of seizure exacerbations near the time of menstruation, affects a high proportion of women of reproductive age with drug-refractory epilepsy. Enhanced seizure susceptibility in perimenstrual catamenial epilepsy is believed to be due to the withdrawal of the progesterone-derived GABA(A) receptor modulating neurosteroid allopregnanolone as a result of the fall in progesterone at the time of menstruation. Studies in a rat pseudopregnancy model of catamenial epilepsy indicate that after neurosteroid withdrawal there is enhanced susceptibility to chemoconvulsant seizures. There is also a transitory increase in the frequency of spontaneous seizures in epileptic rats that had experienced pilocarpine-induced status epilepticus. In the catamenial epilepsy model, there is a marked reduction in the antiseizure potency of anticonvulsant drugs, including benzodiazepines and valproate, but an increase in the anticonvulsant potency and protective index of neurosteroids such as allopregnanolone and the neurosteroid analog ganaxolone. The enhanced seizure susceptibility and benzodiazepine-resistance subsequent to neurosteroid withdrawal may be related to reduced expression and altered kinetics of synaptic GABA(A) receptors and increased expression of GABA(A) receptor subunits (such as alpha4) that confer benzodiazepine insensitivity. The enhanced potency of neurosteroids may be due to a relative increase after neurosteroid withdrawal in the expression of neurosteroid-sensitive delta-subunit-containing perisynaptic or extrasynaptic GABA(A) receptors. Positive allosteric modulatory neurosteroids and synthetic analogs such as ganaxolone may be administered to prevent catamenial seizure exacerbations, in what we call neurosteroid replacement therapy.

Indexed as

AnimalsAnticonvulsantsEpilepsyFemaleGonadal Steroid HormonesHumansMenstrual CyclePregnanoloneRatsReceptors, GABA-AAnticonvulsantsGonadal Steroid HormonesPregnanoloneReceptors, GABA-A

Identifiers

PMID19332335
PMCPMC2682439
OpenAlexW2147975541

What OpenQuestion holds

Textmetadata
LicenceTDM
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.