Evidence map›Paper›PMID 18830443›Full record

ArticleEvidence-based complementary and alternative medicine : eCAM2008

Estrogenic activities of Fatty acids and a sterol isolated from royal jelly.

Kazu-Michi Suzuki, Yoichiro Isohama, Hiroe Maruyama, Yayoi Yamada, Yukio Narita, Shozo Ohta, Yoko Araki, Takeshi Miyata, Satoshi Mishima

Open access · hybridAbstract read
In one paragraph

Article in Evidence-based complementary and alternative medicine : eCAM, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed, 1 pooled it
1.0field-weighted citation impact, top 24% 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

39 citing papers in PubMed, 1 synthesis or guideline pooled it, 118 citations in OpenAlex.

  1. Royal jelly and its hormonal effects in breast cancer: a literature review.Daru : journal of Faculty of Pharmacy, Tehran University of Medical Sciences · 2024
    Pooled it
  2. Trial
  3. Trial
  4. Review
  5. Review
  6. Article
  7. Article
  8. Article
  9. Royal Jelly: Biological Action and Health Benefits.International journal of molecular sciences · 2024
    Review
  10. Review
  11. Article
  12. Royal Jelly andFood technology and biotechnology · 2022
    Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Use of black seed (Nigella sativa) honey bee to improve sheep oocyte maturation medium.Environmental science and pollution research international · 2020
    Article
  18. Review
  19. Article
  20. Review
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 2 institutions in 1 country.

Kazu-Michi SuzukiNagaragawa Research Center, API Co., Ltd, 692-3 Nagara, Gifu 502-0071 and Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-Honmachi, Kumamoto 862-0973, Japan.
Yoichiro Isohama
Hiroe Maruyama
Yayoi Yamada
Yukio Narita
Shozo Ohta
Yoko Araki
Takeshi Miyata
Satoshi Mishima
Nagara Medical Center · JPKumamoto University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We have previously reported that royal jelly (RJ) from honeybees (Apis mellifera) has weak estrogenic activity mediated by interaction with estrogen receptors that leads to changes in gene expression and cell proliferation. In this study, we isolated four compounds from RJ that exhibit estrogenic activity as evaluated by a ligand-binding assay for the estrogen receptor (ER) beta. These compounds were identified as 10-hydroxy-trans-2-decenoic acid, 10-hydroxydecanoic acid, trans-2-decenoic acid and 24-methylenecholesterol. All these compounds inhibited binding of 17beta-estradiol to ERbeta, although more weakly than diethylstilbestrol or phytoestrogens. However, these compounds had little or no effect on the binding of 17beta-estradiol to ERalpha. Expression assays suggested that these compounds activated ER, as evidenced by enhanced transcription of a reporter gene containing an estrogen-responsive element. Treatment of MCF-7 cells with these compounds enhanced their proliferation, but concomitant treatment with tamoxifen blocked this effect. Exposure of immature rats to these compounds by subcutaneous injection induced mild hypertrophy of the luminal epithelium of the uterus, but was not associated with an increase in uterine weight. These findings provide evidence that these compounds contribute to the estrogenic effect of RJ.

Indexed as

10-Hydroxy-2-decenoic acid10-Hydroxydecanoic acid24-Methylenecholesterol2-Decenoic acidApis mellifera

Identifiers

PMID18830443
PMCPMC2529378
OpenAlexW1987137385

What OpenQuestion holds

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LicenceCC BY-NC
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.