Evidence map›Paper›PMID 28494764›Full record

ArticleNutrition journal2017

Possible benefits of tomato juice consumption: a pilot study on irradiated human lymphocytes from healthy donors.

Ayumi Nakamura, Chieko Itaki, Ayako Saito, Toko Yonezawa, Koichi Aizawa, Ayumi Hirai, Hiroyuki Suganuma, Tomisato Miura, Yasushi Mariya, Siamak Haghdoost

Open access · goldAbstract read
In one paragraph

Article in Nutrition journal, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
1.2field-weighted citation impact, top 25% 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, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Review
  6. Article
  7. Lycopene and Vascular Health.Frontiers in pharmacology · 2018
    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

10 authors at 3 institutions in 2 countries.

Ayumi NakamuraDepartment of Radiological Life Sciences, Division of Medical Life Sciences, Hirosaki University Graduate School of Health Sciences, Aomori, 036-8564, Japan.
Chieko ItakiDepartment of Disability and Health, Division of Medical Life Sciences, Hirosaki University Graduate School of Health Sciences, Aomori, 036-8564, Japan.
Ayako SaitoDepartment of Clinical Laboratory Medicine, Hirosaki Central Hospital, Aomori, 036-8188, Japan.
Toko YonezawaDepartment of Clinical Laboratory Medicine, Hirosaki Central Hospital, Aomori, 036-8188, Japan.
Koichi AizawaNature and Wellness Research Department, Innovation Division, KAGOME CO., LTD., Tochigi, 329-2762, Japan.
Ayumi HiraiNature and Wellness Research Department, Innovation Division, KAGOME CO., LTD., Tochigi, 329-2762, Japan.
Hiroyuki SuganumaNature and Wellness Research Department, Innovation Division, KAGOME CO., LTD., Tochigi, 329-2762, Japan.
Tomisato MiuraDepartment of Pathologic Analysis, Division of Medical Life Sciences, Hirosaki University Graduate School of Health Sciences, Aomori, 036-8564, Japan.
Yasushi MariyaDepartment of Radiological Life Sciences, Division of Medical Life Sciences, Hirosaki University Graduate School of Health Sciences, Aomori, 036-8564, Japan. mariya@hirosaki-u.ac.jp.
Siamak HaghdoostCenter for Radiation Protection Research, Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm, SE-106 91, Sweden.
Hirosaki University · JPHirosaki Central Hospital · JPStockholm University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundReactive oxygen species (ROS) mediate much of the DNA damage caused by ionizing radiation. Among carotenoids, lycopene and β-carotene, present in tomato juice, are known to be strong radical scavengers. The aim of the study was to investigate the effect of tomato juice intake on the levels of DNA damage and oxidative stress in human whole blood induced by in vitro exposure to X-rays.

methodsTen healthy adults were asked to drink 190 g of tomato juice, containing 17 mg lycopene and 0.25 mg β-carotene, per day for 3 weeks and then refrain from drinking it for 3 weeks. Peripheral whole blood samples were collected before and after the intake period of tomato juice and after the washout period. The blood samples were exposed in vitro to X-ray doses of 0, 0.1, 0.5, and 2 Gy. Cytogenetic damage was measured using the cytokinesis-block micronucleus (CBMN) assay and the dicentrics (DIC) assay. The level of oxidative stress was determined using serum 8-oxo-7, 8-dihydro-2-deoxyguanosine (8-oxo-dG) and plasma reactive oxygen metabolite-derived compounds (d-ROMs). The concentration of carotenoids in plasma was measured at the three time points.

resultsThe levels of 8-oxo-dG tended to decrease during the intake period and increase during the washout period. A non-significant inverse correlation was noted between the plasma concentration of lycopene plus β-carotene and the level of 8-oxo-dG (P = 0.064). The radiation-induced MN and DIC frequencies increased in a dose-dependent manner, and when compared at the same dose, the MN and DIC frequencies decreased during the intake period compared with those at baseline and then increased during the washout period. The results suggest that continuous tomato juice consumption non-significantly decreases extracellular 8-oxo-dG, d-ROMs, and MN. Tomato juice intake had minimal or no effect on radiation-induced 8-oxo-dG and d-ROMs. For most radiation doses, continuously tomato juice intake lowered the levels of MN and DIC.

conclusionTomato juice consumption may suppress human lymphocyte DNA damage caused by radiation, but further examination is required.

trial registration2014-001 and 2014-R06.

Indexed as

Fruit and Vegetable JuicesRadiation, Ionizing8-Hydroxy-2'-DeoxyguanosineAdultAntioxidantsbeta CaroteneCarotenoidsCells, CulturedDeoxyguanosineDietDNA DamageFemaleHumansLycopeneLymphocytesMale8-Hydroxy-2'-DeoxyguanosineAntioxidantsbeta CaroteneCarotenoidsDeoxyguanosineLycopeneReactive Oxygen SpeciesHuman lymphocytesLycopeneRadioprotective effectReactive oxygen speciesTomato juiceβ-carotene

Identifiers

PMID28494764
PMCPMC5427617
OpenAlexW2612479344

What OpenQuestion holds

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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.