Evidence map›Paper›PMID 30046256›Full record

ArticleNature and science of sleep2018

Chronic treatment with dexamethasone alters clock gene expression and melatonin synthesis in rat pineal gland at night.

Daniela Meneses-Santos, Daniella do Carmo Buonfiglio, Rodrigo Antonio Peliciari-Garcia, Angela Maria Ramos-Lobo, Divanízia do Nascimento Souza, Angelo Rafael Carpinelli, Carla Roberta de Oliveira Carvalho, Rogério Antônio Laurato Sertie, Sandra Andreotti, Fabio Bessa Lima and 4 more

Open access · goldAbstract read
In one paragraph

Article in Nature and science of sleep, 2018. 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
0.7field-weighted citation impact, top 34% 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, 17 citations in OpenAlex.

  1. Pineal Cysts: Clinical Insights and Management Strategies.Advances and technical standards in neurosurgery · 2026
    Review
  2. Reviewing the complex relationship between circadian rhythms and cluster headache.Cephalalgia : an international journal of headache · 2025
    Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Melatonin receptor agonistExperimental and therapeutic medicine · 2019
    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

14 authors at 4 institutions in 2 countries.

Daniela Meneses-SantosDepartment of Morphology, Center of Biological Sciences and Health, Federal University of Sergipe, São Cristóvão, Brazil, acmarcal@yahoo.com.br.
Daniella do Carmo BuonfiglioDepartment of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
Rodrigo Antonio Peliciari-GarciaMorphophysiology & Pathology Sector, Department of Biological Sciences, Federal University of São Paulo, São Paulo, Brazil.
Angela Maria Ramos-LoboDepartment of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
Divanízia do Nascimento SouzaDepartment of Morphology, Center of Biological Sciences and Health, Federal University of Sergipe, São Cristóvão, Brazil, acmarcal@yahoo.com.br.
Angelo Rafael CarpinelliDepartment of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
Carla Roberta de Oliveira CarvalhoDepartment of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
Rogério Antônio Laurato SertieDepartment of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
Sandra AndreottiDepartment of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
Fabio Bessa LimaDepartment of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
Solange Castro AfecheLaboratory of Pharmacology, Butanta Institute, São Paulo, Brazil.
Emerson Ticona FiorettoDepartment of Morphology, Center of Biological Sciences and Health, Federal University of Sergipe, São Cristóvão, Brazil, acmarcal@yahoo.com.br.
José Cipolla-NetoDepartment of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
Anderson Carlos MarçalDepartment of Morphology, Center of Biological Sciences and Health, Federal University of Sergipe, São Cristóvão, Brazil, acmarcal@yahoo.com.br.
Universidade de São Paulo · BRUniversidade Federal de Sergipe · BRInstituto Butantan · BRMorpho (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMelatonin is a neuroendocrine hormone that regulates many functions involving energy metabolism and behavior in mammals throughout the light/dark cycle. It is considered an output signal of the central circadian clock, located in the suprachiasmatic nucleus of the hypothalamus. Melatonin synthesis can be influenced by other hormones, such as insulin and glucocorticoids in pathological conditions or during stress. Furthermore, glucocorticoids appear to modulate circadian clock genes in peripheral tissues and are associated with the onset of metabolic diseases. In the pineal gland, the modulation of melatonin synthesis by clock genes has already been demonstrated. However, few studies have shown the effects of glucocorticoids on clock genes expression in the pineal gland.

resultsWe verified that rats treated with dexamethasone (2 mg/kg body weight, intraperitoneal) for 10 consecutive days, showed hyperglycemia and pronounced hyperinsulinemia during the dark phase. Insulin sensitivity, glucose tolerance, melatonin synthesis, and enzymatic activity of arylalkylamine

conclusionThese results show that chronic treatment with dexamethasone can modulate both melatonin synthesis and circadian clock expression during the dark phase.

Indexed as

AANAT activityclock genesglucocorticoidsglycemia profilenocturnal insulinemiapineal gland

Identifiers

PMID30046256
PMCPMC6054274
OpenAlexW2885019052

What OpenQuestion holds

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Registered trials

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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.