Evidence map›Paper›PMID 15095014›Full record

ArticleCellular and molecular life sciences : CMLS2004

Differential diurnal variations of anandamide and 2-arachidonoyl-glycerol levels in rat brain.

M Valenti, D Viganò, M G Casico, T Rubino, L Steardo, D Parolaro, V Di Marzo

Open access · greenAbstract read
In one paragraph

Article in Cellular and molecular life sciences : CMLS, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed
7.1field-weighted citation impact, top 3% 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

46 citing papers in PubMed, 136 citations in OpenAlex.

  1. Overlapping pathways of migraine and the endocannabinoid system: Potential therapeutic targets.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2026
    Review
  2. Article
  3. Review
  4. Article
  5. Review
  6. Article
  7. Review
  8. Astrocyte Circadian Timekeeping in Brain Health and Neurodegeneration.Advances in experimental medicine and biology · 2021
    Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Cannabinoids, Endocannabinoids and Sleep.Frontiers in molecular neuroscience · 2020
    Article
  14. Article
  15. Article
  16. Diurnal Profiles ofFrontiers in neuroscience · 2019
    Article
  17. Article
  18. Article
  19. Article
  20. 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

7 authors at 3 institutions in 1 country.

M ValentiEndocannabinoid Research Group, Istituto di Chimica Biomolecolare, Via Campi Flegrei 34, Comprensorio Olivetti, Fabbricato 70, 80078 Pozzuoli, Italy.
D Viganò
M G Casico
T Rubino
L Steardo
D Parolaro
V Di Marzo
Istituto di Chimica Biomolecolare · ITUniversity of Insubria · ITUniversity of Palermo · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The endogenous ligands of cannabinoid receptors, also known as endocannabinoids, have been implicated in many physiological and pathological processes of the central nervous system. Here we show that the levels of the two major endocannabinoids, anandamide and 2-arachidonoyl-glycerol (2-AG), in four areas of the rat brain, change dramatically between the light and dark phases of the day. While anandamide levels in the nucleus accumbens, pre-frontal cortex, striatum and hippocampus were significantly higher in the dark phase, the opposite was observed with 2-AG, whose levels were significantly higher during the light phase in all four regions. We found that the activity of the fatty acid amide hydrolase, which catalyzes the metabolism of anandamide, was significantly lower during the dark phase, thus providing a possible explaination for the increase in anandamide levels. However, the activities of monoacylglycerol lipase and diacylglycerol lipase, two of the possible enzymes catalyzing the degradation and biosynthesis of 2-AG, respectively, changed significantly only in the striatum. These data suggest that the levels of the two major endocannabinoids might be under the control of endogenous factors known to undergo diurnal variations, and underscore the different roles, suggested by previous studies, of anandamide and 2-AG in neurophysiological processes.

Indexed as

AmidohydrolasesAnimalsArachidonic AcidsBrainCannabinoid Receptor ModulatorsCircadian RhythmEndocannabinoidsFatty Acid Amide HydrolasesGlyceridesMalePhotoperiodPolyunsaturated AlkamidesRatsRats, Sprague-DawleyAmidohydrolasesanandamideArachidonic AcidsCannabinoid Receptor ModulatorsEndocannabinoidsFatty Acid Amide HydrolasesGlyceridesglyceryl 2-arachidonatePolyunsaturated Alkamides

Identifiers

PMID15095014
PMCPMC11138870
OpenAlexW2036992242

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.