Evidence map›Paper›PMID 18661273›Full record

ArticleJapanese journal of ophthalmology

Effect of electrical stimulation on IGF-1 transcription by L-type calcium channels in cultured retinal Müller cells.

Tatsuhiko Sato, Takashi Fujikado, Takeshi Morimoto, Kenji Matsushita, Takayuki Harada, Yasuo Tano

Abstract read
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In one paragraph

Article in Japanese journal of ophthalmology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 20% 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

30 citing papers in PubMed, 1 synthesis or guideline pooled it, 68 citations in OpenAlex.

  1. Pooled it
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  15. Article
  16. Neuroprotective strategies for retinal disease.Progress in retinal and eye research · 2018
    Review
  17. Review
  18. Review
  19. Electrical Stimulation as a Means for Improving Vision.The American journal of pathology · 2016
    Review
  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 2 institutions in 1 country.

Tatsuhiko SatoDepartment of Applied Visual Science, Osaka University Medical School, Osaka, Japan.
Takashi FujikadoDepartment of Applied Visual Science, Osaka University Medical School, Osaka, Japan. fujikado@ophthal.med.osaka-u.ac.jp.
Takeshi MorimotoDepartment of Ophthalmology, Osaka University Medical School, Osaka, Japan.
Kenji MatsushitaDepartment of Ophthalmology, Osaka University Medical School, Osaka, Japan.
Takayuki HaradaDepartment of Molecular Neurobiology, Tokyo Metropolitan Institute for Neuroscience, Tokyo, Japan.
Yasuo TanoDepartment of Ophthalmology, Osaka University Medical School, Osaka, Japan.
Osaka University · JPTokyo Metropolitan Institute of Medical Science · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo investigate the effect of electrical stimulation (ES) on the induction of insulin-like growth factor 1 (IGF-1) in cultured retinal Müller cells.

methodsMüller cells were isolated from rat retinas. ES was applied to Müller cells of passage 1 with biphasic pulses (duration, 1 ms; frequency, 20 Hz; current, 0-10 mA) for 30 min. The mRNA level of IGF-1 was determined by reverse transcription-polymerase chain reaction (RT-PCR) immediately to 2 h after ES. The change of intracellular calcium concentration ([Ca(2+)]) induced by ES was monitored by Ca(2+) imaging with Fura 2-AM. Ca(2+) imaging and RT-PCR were performed with and without the application of l muM nifedipine, an L-type calcium channel blocker.

resultsThe mRNA level of IGF-1 was increased significantly (P<0.05) by about 1.3-fold immediately after 10 mA ES. [Ca(2+)] began to increase immediately after the start of ES, reached a maximum of approximately 1.8-fold, and continued to increase until about 20 min after the ES. The inductions of IGF-1 transcription and Ca(2+) influx were suppressed by nifedipine.

conclusionsThese results indicate that the enhancement of IGF-1 transcription by ES in cultured Müller cells depends largely on Ca(2+) influx through L-type Ca(2+) channels.

Indexed as

Electric StimulationAnimalsCalciumCalcium Channel BlockersCalcium Channels, L-TypeCells, CulturedEnzyme-Linked Immunosorbent AssayGene Expression RegulationInsulin-Like Growth Factor IMicroscopy, FluorescenceNeurogliaNifedipineRatsRats, Long-EvansRetinaReverse Transcriptase Polymerase Chain ReactionCalciumCalcium Channel BlockersCalcium Channels, L-TypeInsulin-Like Growth Factor INifedipineRNA, Messenger

Identifiers

PMID18661273
OpenAlexW2076353169

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.