Evidence map›Paper›PMID 24301297›Full record

ArticleJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism2014

Delayed progesterone treatment reduces brain infarction and improves functional outcomes after ischemic stroke: a time-window study in middle-aged rats.

Seema Yousuf, Iqbal Sayeed, Fahim Atif, Huiling Tang, Jun Wang, Donald G Stein

Open access · bronzeAbstract read
In one paragraph

Article in Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
4.7field-weighted citation impact, top 6% 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

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 54 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Female-specific neuroprotection after ischemic stroke by vitronectin-focal adhesion kinase inhibition.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2022
    Article
  4. Article
  5. Article
  6. Article
  7. Progesterone in the Brain: Hormone, Neurosteroid and Neuroprotectant.International journal of molecular sciences · 2020
    Review
  8. Steroids in Stroke with Special Reference to Progesterone.Cellular and molecular neurobiology · 2019
    Review
  9. Article
  10. Review
  11. A new era for stroke therapy: Integrating neurovascular protection with optimal reperfusion.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2018
    Review
  12. Article
  13. Neuroprotective strategies for retinal disease.Progress in retinal and eye research · 2018
    Review
  14. Article
  15. A Role of Endogenous Progesterone in Stroke Cerebroprotection Revealed by the Neural-Specific Deletion of Its Intracellular Receptors.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2017
    Article
  16. Neurobehavioral testing in subarachnoid hemorrhage: A review of methods and current findings in rodents.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2017
    Review
  17. Article
  18. Article
  19. Article
  20. 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

6 authors at 1 institution in 1 country.

Seema YousufDepartment of Emergency Medicine, Brain Research Laboratory, Emory University, Atlanta, Georgia, USA.
Iqbal SayeedDepartment of Emergency Medicine, Brain Research Laboratory, Emory University, Atlanta, Georgia, USA.
Fahim AtifDepartment of Emergency Medicine, Brain Research Laboratory, Emory University, Atlanta, Georgia, USA.
Huiling TangDepartment of Emergency Medicine, Brain Research Laboratory, Emory University, Atlanta, Georgia, USA.
Jun WangDepartment of Emergency Medicine, Brain Research Laboratory, Emory University, Atlanta, Georgia, USA.
Donald G SteinDepartment of Emergency Medicine, Brain Research Laboratory, Emory University, Atlanta, Georgia, USA.
Emory University · US

Funding

Progesterone in the Treatment of ischemic StrokeU01NS062676 · NINDS · EMORY UNIVERSITY · PI STEIN, DONALD G. · 2010 to 2012
$2.4M
NINDS NIH HHS U01 NS062676
6 · The paper itself

Abstract

We evaluated the neuroprotective effects of delayed progesterone (PROG) treatment against ischemic stroke-induced neuronal death, inflammation, and functional deficits. We induced transient focal cerebral ischemia in male rats and administered PROG (8 mg/kg) or vehicle intraperitoneally at 3, 6, or 24 hours post occlusion, subcutaneously 5 hours later and then every 24 hours for 7 days. Behavioral outcomes were evaluated over 22 days. Infarct size and other biomarkers of injury were evaluated by cresyl violet staining, and matrix metalloproteinase-9 (MMP-9), glial fibrillary acidic protein (GFAP), and vascular endothelial growth factor (VEGF) by immunofluorescence. Progesterone treatment started at 3 and 6 hours post occlusion significantly (P<0.05) improved behavioral performance at all time points (74.01%) and reduced infarction volume (61.68%) compared with vehicle. No significant difference was observed between the 3 and 6 hour PROG treatment groups. Matrix metalloproteinase-9 and VEGF were upregulated in the PROG groups compared with vehicle. Glial fibrillary acidic protein expression was increased in the vehicle group but markedly lower in the PROG groups. Treatment delayed for 24 hours did not significantly improve functional outcomes or reduce infarction volume. We conclude that, under the right treatment conditions, PROG treatment delayed up to 6 hours can improve functional deficits and reduce brain infarction, possibly by modulating GFAP, VEGF, and MMP-9 expression.

Indexed as

AnimalsBehavior, AnimalBiomarkersBrain InfarctionDisease Models, AnimalGene Expression RegulationGlial Fibrillary Acidic ProteinMaleMatrix Metalloproteinase 9ProgesteroneProgestinsRatsRats, Sprague-DawleyStrokeTime FactorsVascular Endothelial Growth Factor ABiomarkersGlial Fibrillary Acidic ProteinMatrix Metalloproteinase 9Mmp9 protein, ratProgesteroneProgestinsVascular Endothelial Growth Factor Avascular endothelial growth factor A, rat

Identifiers

PMID24301297
PMCPMC3915207
OpenAlexW2069977365

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.