Evidence map›Paper›PMID 28133488›Full record

ArticleEvidence-based complementary and alternative medicine : eCAM2017

Protective Effect of Green Tea (

Somia Lassed, Cláudia M Deus, Radja Djebbari, Djamila Zama, Paulo J Oliveira, Albert A Rizvanov, Abderrezak Dahdouh, Fadila Benayache, Samir Benayache

Open access · hybridAbstract read
In one paragraph

Article in Evidence-based complementary and alternative medicine : eCAM, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.7field-weighted citation impact, top 18% 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

6 citing papers in PubMed, 21 citations in OpenAlex.

  1. Review
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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

9 authors at 3 institutions in 3 countries.

Somia LassedUnité de Recherche Valorisation des Ressources Naturelles, Molécules Bioactives et Analyses Physicochimiques et Biologiques (VARENBIOMOL), Université Constantine 1, 25000 Constantine, Algeria; Laboratoire de Physiologie Animale, Département de Biologie Animale, Faculté des Sciences de la Nature et de la Vie, Université Constantine 1, 25000 Constantine, Algeria; Clinic of Urology-Nephrology and Kidney Transplant Daksi, Constantine, Algeria.
Cláudia M DeusCNC-Center for Neuroscience and Cellular Biology, UC-Biotech Building, Biocant Park, University of Coimbra, Coimbra, Portugal.
Radja DjebbariUnité de Recherche Valorisation des Ressources Naturelles, Molécules Bioactives et Analyses Physicochimiques et Biologiques (VARENBIOMOL), Université Constantine 1, 25000 Constantine, Algeria; Laboratoire de Physiologie Animale, Département de Biologie Animale, Faculté des Sciences de la Nature et de la Vie, Université Constantine 1, 25000 Constantine, Algeria.
Djamila ZamaUnité de Recherche Valorisation des Ressources Naturelles, Molécules Bioactives et Analyses Physicochimiques et Biologiques (VARENBIOMOL), Université Constantine 1, 25000 Constantine, Algeria.ORCID 0000-0002-4312-7701
Paulo J OliveiraCNC-Center for Neuroscience and Cellular Biology, UC-Biotech Building, Biocant Park, University of Coimbra, Coimbra, Portugal.ORCID 0000-0002-5201-9948
Albert A RizvanovInstitute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia.ORCID 0000-0002-9427-5739
Abderrezak DahdouhClinic of Urology-Nephrology and Kidney Transplant Daksi, Constantine, Algeria.
Fadila BenayacheUnité de Recherche Valorisation des Ressources Naturelles, Molécules Bioactives et Analyses Physicochimiques et Biologiques (VARENBIOMOL), Université Constantine 1, 25000 Constantine, Algeria.
Samir BenayacheUnité de Recherche Valorisation des Ressources Naturelles, Molécules Bioactives et Analyses Physicochimiques et Biologiques (VARENBIOMOL), Université Constantine 1, 25000 Constantine, Algeria.
University Frères Mentouri Constantine 1 · DZUniversity of Coimbra · PTKazan Federal University · RU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Green tea (GT) has been studied for its effects as antioxidant and cancer-preventive agent. Epidemiological studies showed that GT consumption decreases the risk for prostate cancer (PC). To investigate whether erythrocyte oxidative stress (OS) is associated with PC and whether daily consumption of GT improves the oxidative phenotype, we performed a study in a group of Algerian PC patients, preceded by an in vitro study to characterize composition and antioxidant/antiproliferative activities of the GT used. This contained a high content of phenolic and flavonoid compounds, demonstrating in vitro antioxidant activity and significant antiproliferative effect on human prostate cancer PC-3 cell line. Seventy PC patients and 120 age-matched healthy subjects participated in the study, with glutathione (GSH), malondialdehyde (MDA), and catalase activity evaluated before and after GT consumption. The results showed a reduced GSH and catalase activity and a high level of MDA in erythrocytes from PC patients. The consumption of 2-3 cups per day of GT during 6 months significantly increased GSH concentration and catalase activity and decreased MDA concentration. In conclusion, GT significantly decreased OS in Algerian PC patients. Regular consumption of GT for a long period may prevent men from developing PC or at least delay its progression.

Identifiers

PMID28133488
PMCPMC5241931
OpenAlexW2569454364

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.