Evidence map›Paper›PMID 31970413›Full record

ArticleThe Journal of clinical endocrinology and metabolism2020

Circadian Misalignment of the 24-hour Profile of Endocannabinoid 2-Arachidonoylglycerol (2-AG) in Obese Adults.

Erin C Hanlon, Rachel Leproult, Kara L Stuhr, Elizabeth M Doncheck, Cecilia J Hillard, Eve Van Cauter

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of clinical endocrinology and metabolism, 2020. 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
1.2field-weighted citation impact, top 22% 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

8 citing papers in PubMed, 15 citations in OpenAlex.

  1. Trial
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  3. Article
  4. Review
  5. Article
  6. Review
  7. Sleep and circadian rhythms: pillars of health-a Keystone Symposia report.Annals of the New York Academy of Sciences · 2021
    Review
  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

6 authors at 2 institutions in 1 country.

Erin C HanlonDepartment of Medicine, Section of Endocrinology, Diabetes, and Metabolism, University of Chicago, Chicago, Illinois.
Rachel LeproultDepartment of Medicine, Section of Endocrinology, Diabetes, and Metabolism, University of Chicago, Chicago, Illinois.
Kara L StuhrDepartment of Pharmacology and Toxicology, Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin.
Elizabeth M DoncheckDepartment of Pharmacology and Toxicology, Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin.
Cecilia J HillardDepartment of Pharmacology and Toxicology, Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin.
Eve Van CauterDepartment of Medicine, Section of Endocrinology, Diabetes, and Metabolism, University of Chicago, Chicago, Illinois.
Medical College of Wisconsin · USUniversity of Chicago · US

Funding

SLOW WAVE SLEEP AND TYPE 2 DIABETES RISK IN AGINGP01AG011412 · NIA · UNIVERSITY OF CHICAGO · PI ZEE, PHYLLIS C. · 1994 to 2021
$31.5M
TRANSLATIONAL RESEARCH UNIVERSITY OF CHICAGO: CLINICAL TRIALSUL1RR024999 · NCRR · UNIVERSITY OF CHICAGO · PI SOLWAY, JULIAN · 2007 to 2011
$25.3M
Sleep and Metabolism in Obesity: Impact of GenderP50HD057796 · NICHD · UNIVERSITY OF CHICAGO · PI EHRMANN, DAVID A · 2007 to 2011
$5.9M
Re-Engineering Translational Research at The University of Chicago (KL2)KL2RR025000 · NCRR · UNIVERSITY OF CHICAGO · PI SOLWAY, JULIAN · 2007 to 2011
$2.0M
NCRR NIH HHS KL2 RR025000NCRR NIH HHS UL1 RR024999NIA NIH HHS P01 AG011412NICHD NIH HHS P50 HD057796
6 · The paper itself

Abstract

contextThe endocannabinoid (eCB) system partly controls hedonic eating, a major cause of obesity. While some studies suggested an overactivation of the eCB system in obesity, peripheral levels of eCBs across the 24-hour cycle have not been characterized in obese individuals despite the fact that in lean adults, levels of the eCB 2-arachidonoylglycerol (2-AG) vary across the day.

objectiveWe sought to examine 24-hour profiles of serum concentrations of 2-AG in healthy obese and nonobese adults, under well-controlled laboratory conditions. We also simultaneously assessed 24-hour profiles of 2-oleoylglycerol (2-OG), leptin, and cortisol in each participant.

designWith fixed light-dark and sleep-wake cycles, blood sampling was performed over an entire 24-hour period, including identical meals at 0900, 1400, and 1900.

participantsTwelve obese (8 women, mean body mass index [BMI]: 39.1 kg/m2) and 15 nonobese (6 women; mean BMI: 23.6 kg/m2) healthy adults were studied.

resultsWe observed a 24-hour variation of 2-AG levels in obese individuals but, relative to nonobese adults, the amplitude was dampened and the timings of the nadir and peak were delayed by 4 to 5 hours. The profile of 2-OG was similarly misaligned. In contrast, when expressed relative to the 24-hour mean level, the 24-hour rhythm of cortisol and leptin were similar in obese and nonobese participants.

conclusionsObesity appears to be associated with a dampening and delay of the 24-hour variation of eCB activity relative to the central circadian signal as well as to the daily leptin rhythm. This misalignment may play a role in the pathophysiology of obesity.

Indexed as

AdultArachidonic AcidsCase-Control StudiesCircadian RhythmEndocannabinoidsFemaleGlyceridesHumansHydrocortisoneLeptinMaleObesityYoung AdultArachidonic AcidsEndocannabinoidsGlyceridesglyceryl 2-arachidonateHydrocortisoneLeptincircadian rhythmscortisolendocannabinoidshedonic eatingleptin

Identifiers

PMID31970413
PMCPMC7015463
OpenAlexW3002589196

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.