Evidence map›Paper›PMID 16951718›Full record

ArticleEvidence-based complementary and alternative medicine : eCAM2006

Royal jelly prevents osteoporosis in rats: beneficial effects in ovariectomy model and in bone tissue culture model.

Saburo Hidaka, Yoshizo Okamoto, Satoshi Uchiyama, Akira Nakatsuma, Ken Hashimoto, S Tsuyoshi Ohnishi, Masayoshi Yamaguchi

Open access · hybridAbstract read
In one paragraph

Article in Evidence-based complementary and alternative medicine : eCAM, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
7.5field-weighted citation impact, top 2% 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

20 citing papers in PubMed, 87 citations in OpenAlex.

  1. Review
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  14. Preventive effects of collagen Peptide from deer sinew on bone loss in ovariectomized rats.Evidence-based complementary and alternative medicine : eCAM · 2014
    Article
  15. Olive oil effectively mitigates ovariectomy-induced osteoporosis in rats.BMC complementary and alternative medicine · 2011
    Article
  16. Article
  17. Article
  18. Article
  19. Estrogenic activities of Fatty acids and a sterol isolated from royal jelly.Evidence-based complementary and alternative medicine : eCAM · 2008
    Article
  20. 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

7 authors at 5 institutions in 2 countries.

Saburo HidakaDepartment of Dental Hygiene, Fukuoka College of Health Sciences, Fukuoka, Japan, sabrnrn@college.fdcnet.ac.jp
Yoshizo Okamoto
Satoshi Uchiyama
Akira Nakatsuma
Ken Hashimoto
S Tsuyoshi Ohnishi
Masayoshi Yamaguchi
Automated Precision (United States) · USUniversity of Shizuoka · JPBiomedical Research Institute · USFukuoka College of Health Sciences · JPFukuoka Dental College · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Royal jelly (RJ) has been used worldwide for many years as medical products, health foods and cosmetics. Since RJ contains testosterone and has steroid hormone-type activities, we hypothesized that it may have beneficial effects on osteoporosis. We used both an ovariectomized rat model and a tissue culture model. Rats were divided into eight groups as follows: sham-operated (Sham), ovariectomized (OVX), OVX given 0.5% (w/w) raw RJ, OVX given 2.0% (w/w) RJ, OVX given 0.5% (w/w) protease-treated RJ (pRJ), OVX given 2.0% (w/w) pRJ, OVX given 17beta-estradiol and OVX given its vehicle, respectively. The Ovariectomy decreased tibial bone mineral density (BMD) by 24%. Administration of 17beta-estradiol to OVX rats recovered the tibial BMD decrease by 100%. Administration of 2.0% (w/w) RJ and 0.5-2.0% (w/w) pRJ to OVX rats recovered it by 85% or more. These results indicate that both RJ and pRJ are almost as effective as 17beta-estradiol in preventing the development of bone loss induced by ovariectomy in rats. In tissue culture models, both RJ and pRJ increased calcium contents in femoral-diaphyseal and femoral-metaphyseal tissue cultures obtained from normal male rats. However, in a mouse marrow culture model, they neither inhibited the parathyroid hormone (PTH)-induced calcium loss nor affected the formation of osteoclast-like cells induced by PTH in mouse marrow culture system. Therefore, our results suggest that both RJ and pRJ may prevent osteoporosis by enhancing intestinal calcium absorption, but not by directly antagonizing the action of PTH.

Identifiers

PMID16951718
PMCPMC1513150
OpenAlexW2107661902

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Registered trials

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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.