Evidence map›Paper›PMID 17310378›Full record

ArticleExperimental brain research2007

Plasticity of basal ganglia neurocircuitries following perinatal asphyxia: effect of nicotinamide.

Verena Klawitter, Paola Morales, Diego Bustamante, Sonia Gomez-Urquijo, Tomas Hökfelt, Mario Herrera-Marschitz

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Article in Experimental brain research, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
4.1field-weighted citation impact, top 7% 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

17 citing papers in PubMed, 27 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

6 authors at 3 institutions in 3 countries.

Verena KlawitterProgramme of Molecular and Clinical Pharmacology, ICBM, Medical Faculty, University of Chile, PO Box 70000 Santiago 7, Chile. vklawitter@med.uchile.cl
Paola Morales
Diego Bustamante
Sonia Gomez-Urquijo
Tomas Hökfelt
Mario Herrera-Marschitz
University of Chile · CLKarolinska Institutet · SEUniversity of the Basque Country · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The potential neuroprotection of nicotinamide on the consequences of perinatal asphyxia was investigated with triple organotypic cultures. Perinatal asphyxia was induced in vivo by immersing foetuses-containing uterine horns removed from ready-to-deliver rats into a water bath for 20 min. Sibling caesarean-delivered pups were used as controls. Three days later tissue from substantia nigra, neostriatum and neocortex was dissected and placed on a coverslip. After a month, the cultures were processed for immunocytochemistry and phenotyped with markers against the NMDA receptor subunit NR1, tyrosine hydroxylase (TH), or neuronal nitric oxide synthase (nNOS). Some cultures were analysed for cell viability. Nicotinamide (0.8 mmol/kg, i.p.) or saline was administered to asphyxia-exposed and caesarean-delivered control pups 24, 48 and 72 h after birth. Perinatal asphyxia produced a decrease of cell viability in substantia nigra, but not in neostriatum or neocortex. Immunocytochemistry confirmed the vulnerability of the substantia nigra, demonstrating that there was a significant decrease in the number of NR1 and TH-positive (+) cells/mm2, as well as a decrease in the length of TH+ processes, suggesting neurite atrophy. In control cultures, many nNOS+ cells were seen, with different features, regional distribution and cell body sizes. Following perinatal asphyxia, there was an increase in the number of nNOS+ cells/mm2 in substantia nigra, versus a decrease in neostriatum including reduced neurite length, and no apparent changes in neocortex. The main effect of nicotinamide was seen in the neostriatum, preventing the asphyxia-induced decrease in the number of nNOS+ cells and neurite length. Nicotinamide also prevented the effect of perinatal asphyxia on TH-positive neurite length. The present results support the idea that nicotinamide can prevent the effects produced by a sustained energy-failure condition, as occurring during perinatal asphyxia.

Indexed as

Analysis of VarianceAnimalsAnimals, NewbornAsphyxiaBasal GangliaCell CountDisease Models, AnimalEthidiumFemaleNerve NetNeuronal PlasticityNiacinamideNitric Oxide Synthase Type IOrgan Culture TechniquesPregnancyRatsEthidiumethidium homodimerNiacinamideNitric Oxide Synthase Type INR1 NMDA receptorReceptors, N-Methyl-D-AspartateTyrosine 3-MonooxygenaseVitamin B Complex

Identifiers

PMID17310378
OpenAlexW1985048252

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.