Evidence map›Paper›PMID 30666559›Full record

ArticleNeurotoxicity research2019

Dose-Dependent Adult Neurodegeneration in a Rat Model After Neonatal Exposure to β-N-Methylamino-L-Alanine.

Laura Scott, Timothy Downing

Abstract read
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In one paragraph

Article in Neurotoxicity research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
–field-weighted citation impact
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

8 citing papers in PubMed.

  1. Review
  2. Article
  3. Cyanobacteria, Cyanotoxins, and Neurodegenerative Diseases:International journal of molecular sciences · 2021
    Review
  4. Review
  5. BMAA, Neurodegeneration, and Neuroprotection.Neurotoxicity research · 2021
    Article
  6. Article
  7. Article
  8. 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

2 authors.

Laura ScottDepartment of Biochemistry and Microbiology, Nelson Mandela University, PO Box 77 000, Port Elizabeth, 6031, South Africa.
Timothy DowningDepartment of Biochemistry and Microbiology, Nelson Mandela University, PO Box 77 000, Port Elizabeth, 6031, South Africa. Tim.Downing@mandela.ac.za.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The link between neonatal BMAA exposure and neurodegeneration has recently been demonstrated in rodents. We therefore investigated the behavioral and histopathological dose response to BMAA administered as a single dose. We report here that exposure to a BMAA dose as low as 50 mg/kg on PND 3 caused mild short-term behavioral alterations as well as beta-amyloid deposition together with neuronal loss in the hippocampus of adult rats. Additionally, all histopathological abnormalities and behavioral deficits that had been observed in a previous study in the brain and spinal cord tissue of rats exposed to 400 mg/kg BMAA on PND 3 were also observed here in the brain and spinal cord tissue of male and female rats exposed to 100 mg/kg BMAA at the same age, although the proteinopathy burdens and volume losses were lower. Both behavioral deficits and histopathology increased with increasing dose, and a single neonatal BMAA exposure at a dose of 100 mg/kg was the lowest dose able to cause clinical signs of toxicity, behavioral deficits, and neuropathology that are typically observed in AD, PD, and/or ALS patients.

Indexed as

Amino Acids, DiaminoAnimalsAnimals, NewbornAnimals, Outbred StrainsBrainCyanobacteria ToxinsDose-Response Relationship, DrugFemaleMaleMaze LearningNerve DegenerationNeurodegenerative DiseasesRandom AllocationRats, Sprague-DawleySex FactorsSpinal CordAmino Acids, Diaminobeta-N-methylamino-L-alanineCyanobacteria ToxinsBehaviorBMAADose responseNeurodegenerationRatsβ-N-methylamino-L-alanine

Identifiers

What OpenQuestion holds

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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.