Evidence map›Paper›PMID 18095068›Full record

ArticleJournal of bone and mineral metabolism2008

Low plasma phylloquinone concentration is associated with high incidence of vertebral fracture in Japanese women.

Naoko Tsugawa, Masataka Shiraki, Yoshitomo Suhara, Maya Kamao, Reo Ozaki, Kiyoshi Tanaka, Toshio Okano

Abstract read
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In one paragraph

Article in Journal of bone and mineral metabolism, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 1 pooled it
5.6field-weighted citation impact, top 4% 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

29 citing papers in PubMed, 1 synthesis or guideline pooled it, 87 citations in OpenAlex.

  1. Pooled it
  2. Trial
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  8. Review
  9. Vitamin K: Infection, Inflammation, and Auto-Immunity.Journal of inflammation research · 2024
    Review
  10. Role of vitamins beyond vitamin DInternational journal of molecular medicine · 2024
    Review
  11. Review
  12. Review
  13. Review
  14. Article
  15. Article
  16. Multiple vitamin deficiencies additively increase the risk of incident fractures in Japanese postmenopausal women.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2019
    Article
  17. Article
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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

7 authors at 2 institutions in 1 country.

Naoko TsugawaDepartment of Hygienic Sciences, Kobe Pharmaceutical University, 4-19-1 Motoyamakita-machi, Higashinada-ku, Kobe 658-8558, Japan.
Masataka Shiraki
Yoshitomo Suhara
Maya Kamao
Reo Ozaki
Kiyoshi Tanaka
Toshio Okano
Kobe Pharmaceutical University · JPKyoto Women's University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

It has been reported that vitamin K supplementation effectively prevents fractures and sustains bone mineral density in osteoporosis. However, there are only limited reported data concerning the association between vitamin K nutritional status and bone mineral density (BMD) or fractures in Japan. The objectives were to evaluate the association between plasma phylloquinone (K1) or menaquinone (MK-4 and MK-7) concentration and BMD or fracture in Japanese women prospectively. A total of 379 healthy women aged 30-88 years (mean age, 63.0 years) were consecutively enrolled. Plasma K1, MK-4, MK-7, and serum undercarboxylated osteocalcin (ucOC) concentrations, BMD, and incidence of vertebral fractures were evaluated. In stepwise multiple linear regression analyses, L2-4 BMD and a bone turnover marker, log K1, concentrations were independently correlated with vertebral fracture incidence. When subjects were divided into low and high K1 groups by plasma K1 concentration, the incidence of vertebral fracture in the low K1 group (14.4%) was significantly higher than that in the high K1 group (4.2%), and its age-adjusted RR was 3.58 (95% CI, 3.26-3.93). L2-4 BMD was not different between the two groups. These results suggest that subjects with vitamin K1 insufficiency in bone have increased susceptibility for vertebral fracture independently from BMD.

Indexed as

AdultAgedAged, 80 and overAge FactorsAsian PeopleFemaleFractures, BoneHumansIncidenceJapanMiddle AgedSpinal InjuriesVitamin K 1Vitamin K 2menaquinone 7menatetrenoneVitamin K 1Vitamin K 2

Identifiers

PMID18095068
OpenAlexW2125938058

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.