Evidence map›Paper›PMID 29797213›Full record

ArticleEndocrine2018

Evaluation of melatonin and AFMK levels in women with breast cancer.

Tialfi Bergamin de Castro, Newton Antônio Bordin-Junior, Eduardo Alves de Almeida, Debora Aparecida Pires de Campos Zuccari

Open access · greenAbstract read
PubMed Publisher
In one paragraph

Article in Endocrine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
2.3field-weighted citation impact, top 12% 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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 36 citations in OpenAlex.

  1. Pooled it
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  14. Is Melatonin the Cornucopia of the 21st Century?Antioxidants (Basel, Switzerland) · 2020
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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

4 authors at 3 institutions in 1 country.

Tialfi Bergamin de CastroSão Paulo State University - UNESP, Cristóvão Colombo, 2265, São José do Rio Preto, 15054-000, São Paulo, Brazil.
Newton Antônio Bordin-JuniorSão José do Rio Preto Medical School - FAMERP, Av. Brigadeiro Faria Lima, 5416, São José do Rio Preto, 15090-000, São Paulo, Brazil.
Eduardo Alves de AlmeidaRegional University of Blumenau Foundation - FURB, Antônio da Veiga, 140, Blumenau, 89030-903, Santa Catarina, Brazil.
Debora Aparecida Pires de Campos ZuccariSão Paulo State University - UNESP, Cristóvão Colombo, 2265, São José do Rio Preto, 15054-000, São Paulo, Brazil. debora.zuccari@famerp.br.ORCID http://orcid.org/0000-0002-0146-9041
Faculdade de Medicina de São José do Rio Preto · BRUniversidade Estadual Paulista (Unesp) · BRUniversidade Regional de Blumenau · BR

Funding

Fundação de Amparo à Pesquisa do Estado de São Paulo 2015/02935-2
6 · The paper itself

Abstract

purposeChanges in the circadian rhythm may contribute to the development of cancer and are correlated with the high risk of breast cancer (BC) in night workers. Melatonin is a hormone synthesized by the pineal gland at night in the absence of light. Levels of melatonin and the metabolite of oxidative metabolism AFMK (acetyl-N-formyl-5-methoxykynurenamine), are suggested as potential biomarkers of BC risk. The aims of this study were to evaluate levels of melatonin and AFMK in women recently diagnosed with BC, women under adjuvant chemotherapy, and night-shift nurses, and compare them with healthy women to evaluate the relation of these compounds with BC risk.

methodsBlood samples were collected from 47 women with BC, 9 healthy women, 10 healthy night shift nurses, and 6 patients under adjuvant chemotherapy. Compound levels were measured by mass spectrometry. RESULTS AND

conclusionsOur results showed that women with BC had lower levels of melatonin compared to control group women, and even lower in night-shift nurses and in patients under adjuvant chemotherapy. There was no significant difference of AFMK levels between the groups. In addition to this, high levels of melatonin and AFMK were related to patients with metastasis, and high levels of AFMK were related to the presence of lymph node-positive, tumor > 20 mm and patients who sleep with light at night. Our results showed a reduction of melatonin levels in BC patients, suggesting a relation with the disease, and in addition, point to the importance of melatonin supplementation in women that work at night to reduce the BC risk.

Indexed as

BiomarkersBreast NeoplasmsCircadian RhythmFemaleHumansKynuramineLymphatic MetastasisMelatoninMiddle AgedPrognosisBiomarkersKynuramineMelatoninN-acetyl-N-formyl-5-methoxykynurenamineAFMKBlood levelBreast cancerCircadian rhythmicMelatonin

Identifiers

PMID29797213
OpenAlexW2804542707

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.