Evidence map›Paper›PMID 28303260›Full record

ArticleeNeuro

Evidence for an Additive Neurorestorative Effect of Simultaneously Administered CDNF and GDNF in Hemiparkinsonian Rats: Implications for Different Mechanism of Action.

Merja H Voutilainen, Francesca De Lorenzo, Polina Stepanova, Susanne Bäck, Li-Ying Yu, Päivi Lindholm, Eeva Pörsti, Mart Saarma, Pekka T Männistö, Raimo K Tuominen

Open access · goldAbstract read
In one paragraph

Article in eNeuro. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 11% 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

33 citing papers in PubMed, 1 synthesis or guideline pooled it, 58 citations in OpenAlex.

  1. Pooled it
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  17. CDNF: An innovative actor in disease-modifying approaches for Parkinson's disease.Molecular therapy : the journal of the American Society of Gene Therapy · 2021
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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

10 authors at 1 institution in 1 country.

Merja H VoutilainenDivision of Pharmacology and Pharmacotherapy, Faculty of Pharmacy, Viikki Biocenter, University of Helsinki, FIN-00014 Helsinki, Finland; Institute of Biotechnology, Viikki Biocenter, University of Helsinki, FIN-00014 Helsinki, Finland.ORCID 0000-0002-9832-7655
Francesca De LorenzoInstitute of Biotechnology, Viikki Biocenter, University of Helsinki , FIN-00014 Helsinki, Finland.
Polina StepanovaInstitute of Biotechnology, Viikki Biocenter, University of Helsinki , FIN-00014 Helsinki, Finland.
Susanne BäckDivision of Pharmacology and Pharmacotherapy, Faculty of Pharmacy, Viikki Biocenter, University of Helsinki , FIN-00014 Helsinki, Finland.
Li-Ying YuInstitute of Biotechnology, Viikki Biocenter, University of Helsinki , FIN-00014 Helsinki, Finland.
Päivi LindholmInstitute of Biotechnology, Viikki Biocenter, University of Helsinki , FIN-00014 Helsinki, Finland.ORCID 0000-0003-3022-5035
Eeva PörstiDivision of Pharmacology and Pharmacotherapy, Faculty of Pharmacy, Viikki Biocenter, University of Helsinki , FIN-00014 Helsinki, Finland.
Mart SaarmaInstitute of Biotechnology, Viikki Biocenter, University of Helsinki , FIN-00014 Helsinki, Finland.ORCID 0000-0001-5543-7160
Pekka T MännistöDivision of Pharmacology and Pharmacotherapy, Faculty of Pharmacy, Viikki Biocenter, University of Helsinki , FIN-00014 Helsinki, Finland.
Raimo K TuominenDivision of Pharmacology and Pharmacotherapy, Faculty of Pharmacy, Viikki Biocenter, University of Helsinki , FIN-00014 Helsinki, Finland.
University of Helsinki · FI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Parkinson's disease (PD) is a neurodegenerative disorder associated with a progressive loss of dopaminergic (DAergic) neurons of the substantia nigra (SN) and the accumulation of intracellular inclusions containing α-synuclein. Current therapies do not stop the progression of the disease, and the efficacy of these treatments wanes over time. Neurotrophic factors (NTFs) are naturally occurring proteins promoting the survival and differentiation of neurons and the maintenance of neuronal contacts. CDNF (cerebral dopamine NTF) and GDNF (glial cell line-derived NTF) are able to protect DAergic neurons against toxin-induced degeneration in experimental models of PD. Here, we report an additive neurorestorative effect of coadministration of CDNF and GDNF in the unilateral 6-hydroxydopamine (6-OHDA) lesion model of PD in rats. NTFs were given into the striatum four weeks after unilateral intrastriatal injection of 6-OHDA (20 µg). Amphetamine-induced (2.5 mg/kg, i.p.) rotational behavior was measured every two weeks. Number of tyrosine hydroxylase (TH)-positive cells from SN pars compacta (SNpc) and density of TH-positive fibers in the striatum were analyzed at 12 weeks after lesion. CDNF and GDNF alone restored the DAergic function, and one specific dose combination had an additive effect: CDNF (2.5µg) and GDNF (1µg) coadministration led to a stronger trophic effect relative to either of the single treatments alone. The additive effect may indicate different mechanism of action for the NTFs. Indeed, both NTFs activated the survival promoting PI3 kinase (PI3K)-Akt signaling pathway, but only CDNF decreased the expression level of tested endoplasmatic reticulum (ER) stress markers ATF6, glucose-regulated protein 78 (GRP78), and phosphorylation of eukaryotic initiation factor 2α subunit (eIF2α).

Indexed as

AmphetamineAnimalsAntiparkinson AgentsCells, CulturedCentral Nervous System StimulantsCorpus StriatumDopaminergic NeuronsDrug SynergismDrug Therapy, CombinationEndoplasmic Reticulum Chaperone BiPFunctional LateralityGlial Cell Line-Derived Neurotrophic FactorMaleMiceMotor ActivityNerve Growth FactorsAmphetamineAntiparkinson AgentsCDNF protein, humanCentral Nervous System StimulantsEndoplasmic Reticulum Chaperone BiPGlial Cell Line-Derived Neurotrophic FactorHSPA5 protein, humanHspa5 protein, mouseNerve Growth FactorsNeuroprotective AgentsOxidopamineRecombinant ProteinsTyrosine 3-Monooxygenase6-OHDAadditive effectCDNFER stressGDNFrat

Identifiers

PMID28303260
PMCPMC5346176
OpenAlexW2590972383

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.