Evidence map›Paper›PMID 27262851›Full record

ArticleInternational urology and nephrology2016

Relationship of serum levels and dietary intake of isoflavone, and the novel bacterium Slackia sp. strain NATTS with the risk of prostate cancer: a case-control study among Japanese men.

Yoshie Nagata, Yukiko Sugiyama, Fumimasa Fukuta, Akio Takayanagi, Naoya Masumori, Taiji Tsukamoto, Hiroshi Akasaka, Hirofumi Ohnishi, Shigeyuki Saitoh, Tetsuji Miura and 4 more

Abstract read
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In one paragraph

Article in International urology and nephrology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 3 pooled it
1.7field-weighted citation impact, top 17% 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

14 citing papers in PubMed, 3 syntheses or guidelines pooled it, 21 citations in OpenAlex.

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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

14 authors at 3 institutions in 1 country.

Yoshie NagataDepartment of Public Health, Sapporo Medical University School of Medicine, West-17, South-1, Chuo-ku, Sapporo, 060-8556, Japan. ynagata@sapmed.ac.jp.
Yukiko SugiyamaDepartment of Public Health, Sapporo Medical University School of Medicine, West-17, South-1, Chuo-ku, Sapporo, 060-8556, Japan.
Fumimasa FukutaDepartment of Urology, Sapporo Medical University School of Medicine, West-17, South-1, Chuo-ku, Sapporo, 060-8556, Japan.
Akio TakayanagiDepartment of Urology, Sapporo Medical University School of Medicine, West-17, South-1, Chuo-ku, Sapporo, 060-8556, Japan.
Naoya MasumoriDepartment of Urology, Sapporo Medical University School of Medicine, West-17, South-1, Chuo-ku, Sapporo, 060-8556, Japan.
Taiji TsukamotoDepartment of Urology, Sapporo Medical University School of Medicine, West-17, South-1, Chuo-ku, Sapporo, 060-8556, Japan.
Hiroshi AkasakaDepartment of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, West-17, South-1, Chuo-ku, Sapporo, 060-8556, Japan.
Hirofumi OhnishiDepartment of Public Health, Sapporo Medical University School of Medicine, West-17, South-1, Chuo-ku, Sapporo, 060-8556, Japan.
Shigeyuki SaitohDepartment of Nursing, Sapporo Medical University School of Health Sciences, West-17, South-1, Chuo-ku, Sapporo, 060-8556, Japan.
Tetsuji MiuraDepartment of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, West-17, South-1, Chuo-ku, Sapporo, 060-8556, Japan.
Kaoru MoriyamaYakult Central Institute for Microbiological Research, Izumi 5-11, Kunitachi, Tokyo, 186-0012, Japan.
Hirokazu TsujiYakult Central Institute for Microbiological Research, Izumi 5-11, Kunitachi, Tokyo, 186-0012, Japan.
Hideyuki AkazaResearch Center for Advanced Science and Technology, The University of Tokyo, Komaba 4-6-1, Meguro-ku, Tokyo, 153-8904, Japan.
Mitsuru MoriDepartment of Public Health, Sapporo Medical University School of Medicine, West-17, South-1, Chuo-ku, Sapporo, 060-8556, Japan.
Sapporo Medical University · JPYakult Central Institute · JPThe University of Tokyo · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeIsoflavones may play a role in the prevention of hormone-related cancers. Equol is an isoflavone metabolized from daidzein in the presence of certain intestinal bacteria. Slackia sp. strain NATTS, a newly identified equol-producing bacterium, was recently isolated from human feces in Japan. We investigated the association of serum levels and dietary intake of isoflavones and Slackia sp. strain NATTS with the risk of prostate cancer in a case-control study among Japanese men.

methodsFifty-six patients with newly diagnosed prostate cancer and 56 hospital controls were enrolled in this study. Isoflavones were assessed by measurement of serum levels and administration of a food frequency questionnaire. Slackia sp. strain NATTS in feces was also measured. The odds ratios (ORs) and 95 % confidence intervals (CIs) for prostate cancer were then determined using a logistic regression model.

resultsThe adjusted ORs for prostate cancer in comparison with the highest to lowest categories were 0.06 (95 % CI 0.02-0.24) for serum genistein, 0.18 (95 % CI 0.06-0.52) for daidzein, 0.16 (95 % CI 0.06-0.46) for glycitein, 0.52 (95 % CI 0.22-1.22) for equol, 0.86 (95 % CI 0.30-2.48) for dietary genistein, and 0.80 (95 % CI 0.28-2.28) for dietary daidzein. The adjusted OR for prostate cancer in comparison with values above versus below the median was 0.95 (95 % CI 0.42-2.16) for Slackia sp. strain NATTS.

conclusionOur study findings suggest that high serum levels of genistein, daidzein, and glycitein are significantly associated with a decreased risk of prostate cancer among Japanese men.

Indexed as

DietActinobacteriaAgedCase-Control StudiesEquolFecesGenisteinHumansIsoflavonesJapanMaleMiddle AgedOdds RatioProstatic NeoplasmsSurveys and QuestionnairesdaidzeinEquolGenisteinglyciteinIsoflavonesDietary isoflavone intakeJapanese menProstate cancerSerum isoflavone levelSlackia sp. strain NATTS

Identifiers

PMID27262851
OpenAlexW2419238803

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.