Evidence map›Paper›PMID 16632873›Full record

ReviewJournal of molecular neuroscience : MN2006

Neurogenic pain and steroid synthesis in the spinal cord.

Christine Patte-Mensah, Cherkaouia Kibaly, Domitille Boudard, Véronique Schaeffer, Aurélie Béglé, Simona Saredi, Laurence Meyer, Ayikoe G Mensah-Nyagan

Abstract readReview
PubMed Publisher
In one paragraph

Review in Journal of molecular neuroscience : MN, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
4.1field-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

21 citing papers in PubMed, 87 citations in OpenAlex.

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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

8 authors at 2 institutions in 1 country.

Christine Patte-MensahInstitut des Neurosciences Cellulaires et Intégratives-Centre National de la Recherche Scientifique, Université Louis Pasteur, 67084 Strasbourg Cedex, France.
Cherkaouia Kibaly
Domitille Boudard
Véronique Schaeffer
Aurélie Béglé
Simona Saredi
Laurence Meyer
Ayikoe G Mensah-Nyagan
Institut des Neurosciences Cellulaires et Intégratives · FRCentre National de la Recherche Scientifique · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The spinal cord (SC) is a biosynthetic center for neurosteroids, including pregnenolone (PREG), progesterone (PROG), and 3alpha/5alpha-tetrahydroprogesterone (3alpha/5alpha-THP). In particular, an active form of cytochrome P450 sidechain cleavage (P450scc) has been localized in sensory networks of the rat SC dorsal horn (DH). P450scc is the key enzyme catalyzing the conversion of cholesterol (CHOL) into PREG, the rate-limiting step in the biosynthesis of all classes of steroids. To determine whether neurosteroidogenesis might be involved in the pivotal role played by the DH in nociception, effects of neurogenic pain provoked by sciatic nerve ligature were investigated on P450scc expression, cellular distribution, and activity in the SC. P450scc mRNA concentration was threefold higher in the DH of neuropathic rats than in controls. The nerve ligature also increased the density of P450sccpositive neuronal perykarya and fibers in the ipsilateral DH. Incubation of spinal tissue homogenates with [3H]CHOL revealed that the amount of newly synthesized [3H]PREG from [3H]CHOLwas 80% higher in the DH of neuropathic rats. Radioimmunoassays showed an increase of PREG and 3alpha/5alpha-THP concentrations in neuropathic rat DH. The upregulation of PREG and 3alpha/5alpha-THP biosynthesis might be involved in endogenous mechanisms triggered by neuropathic rats to cope with the chronic pain state. 3alpha/5alpha-THP formation from PREG can also generate PROG, which decreases sensitivity to pain and protects nerve cells against degeneration. Because apoptotic cell death has been demonstrated in the DH during neuropathic pain, activation of neurosteroidogenesis in spinal tissues might also be correlated to the neuroprotective role of steroids in the SC.

Indexed as

3-alpha-Hydroxysteroid Dehydrogenase (B-Specific)3-Hydroxysteroid Dehydrogenases3-Oxo-5-alpha-Steroid 4-DehydrogenaseAnimalsCholesterol Side-Chain Cleavage EnzymeHumansLigationNeuronsPainPregnenoloneProgesteroneSciatic NerveSpinal CordSteroid 17-alpha-HydroxylaseSteroids3-alpha-Hydroxysteroid Dehydrogenase (B-Specific)3-Hydroxysteroid Dehydrogenases3-Oxo-5-alpha-Steroid 4-DehydrogenaseCholesterol Side-Chain Cleavage EnzymePregnenoloneProgesteroneSteroid 17-alpha-HydroxylaseSteroids

Identifiers

PMID16632873
OpenAlexW2019191832

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.