ArticleJournal of circadian rhythms2021
Day-Night Variations in the Concentration of Neurotransmitters in the Rat Lumbar Spinal Cord.
Article in Journal of circadian rhythms, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
What it found
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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.
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Who cites it
7 citing papers in PubMed, 10 citations in OpenAlex.
- Kynurenine metabolites unchanged after multinutrient supplementation in children with ADHD: a secondary data analysis from the MADDY study.Journal of neural transmission (Vienna, Austria : 1996) · 2026Trial
- Microglia regulate motor neuron plasticity via reciprocal fractalkine and adenosine signaling.Nature communications · 2024Article
- Microglia regulate motor neuron plasticity via reciprocal fractalkine/adenosine signaling.bioRxiv : the preprint server for biology · 2024Article
- Influence of Temperature Chronobiology on Stroke Outcome.International journal of molecular sciences · 2023Observational
- Magnitude and Mechanism of Phrenic Long-term Facilitation Shift Between Daily Rest Versus Active Phase.Function (Oxford, England) · 2023Article
- Hypothalamic A11 Nuclei Regulate the Circadian Rhythm of Spinal Mechanonociception through Dopamine Receptors and Clock Gene Expression.Life (Basel, Switzerland) · 2022Article
- MiR-30d Participates in Vincristine-Induced Neuropathic Pain by Down-Regulating GAD67.Neurochemical research · 2022Article
Corrections and comments
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The purpose of this study was to analyze the light-dark variations in the concentrations of several neurotransmitters in the lumbar spinal cord of rats. Six groups of male Wistar rats were exposed to a 12 h light-12 h dark cycle for 70 days. At different time points of the experimental day (8, 12, 16, 20, 24 and 4 h), one of the groups of rats was randomly selected to be sacrificed, and the spinal cords were removed. The gamma-aminobutyric acid (GABA), glutamate (GLU), dopamine, serotonin, epinephrine (E), and norepinephrine (NE) levels in each extracted spinal cord were measured with high-pressure liquid chromatography (HPLC)-EQ and HPLC-fluorescence systems. Our results indicate that the spinal concentrations of GABA and GLU showed sinusoidal variation in a 24 h cycle, with the highest peak in the dark period (~20 h). Dopamine and serotonin also fluctuated in concentration but peaked in the light period (between 8 and 12 h), while E and NE concentrations showed no significant fluctuations. The possible relationship between neurotransmitter spinal concentration and sensitivity to pain and locomotor activity is discussed. It was concluded that most of the neurotransmitter levels in the lumbar spinal cord showed circadian fluctuations coupled to a light-dark cycle.
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Registered trials
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.