Evidence map›Paper›PMID 34429140›Full record

ArticleJournal of orthopaedic surgery and research2021

Iron accumulation deteriorated bone loss in estrogen-deficient rats.

Lu-Lin Liu, Gong-Wen Liu, Hui Liu, Kai Zhao, You-Jia Xu

Open access · goldAbstract read
In one paragraph

Article in Journal of orthopaedic surgery and research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
2.2field-weighted citation impact, top 12% 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

12 citing papers in PubMed, 22 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

5 authors at 5 institutions in 1 country.

Lu-Lin Liu *Department of Orthopedics, The First Affiliated Hospital of Gannan Medical University, Ganzhou, 341000, Jiangxi, China.
Gong-Wen Liu *Suzhou TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, 215009, Jiangsu, China.
Hui LiuDepartment of Orthopedics, Ganxian District Traditional Chinese Medicine Hospital of Ganzhou City, Ganzhou, 341100, Jiangxi, China.
Kai ZhaoDepartment of Orthopedics, The First Affiliated Hospital of Gannan Medical University, Ganzhou, 341000, Jiangxi, China.
You-Jia XuDepartment of Orthopedics, Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, 215004, Jiangsu, China. xuyoujia2021@sina.com.
First Affiliated Hospital of Gannan Medical University · CNGanzhou People's Hospital · CNNanjing University of Chinese Medicine · CNSecond Affiliated Hospital of Soochow University · CNSoochow University · CN

Funding

natural science foundation of china 81874018scientific research project of gannan medical university YB201901youth project of education department of jiangxi province GJJ201540
6 · The paper itself

Abstract

backgroundPostmenopausal osteoporosis is characterized by an imbalance of bone resorption exceeding bone formation, resulting in a net loss of bone mass. Whether a menopause-related excess of iron contributes to the development of postmenopausal osteoporosis has remained unresolved due to a lack of an appropriate animal model. This study aimed to explore the effects of iron accumulation in bone mass in estrogen-deficient rats.

methodsIn the present study, ovariectomy (OVX) was performed in female rats and the changes of iron metabolism and some related modulated genes were detected. Ferric ammonium citrate (FAC) was used as a donor of iron for OVX rats. Moreover, micro-CT was performed to assess the bone microarchitecture in sham group, OVX, and FAC groups. Histological detection of iron in liver was assessed by Perl's staining. The expressions of β-CTX and osteocalcin were assessed by ELISA.

resultsIt was found that serum iron decreased after OVX. It was found that the expressions of Hepcidin in liver and Fpn, DMT-1 in duodenum significantly decreased at transcriptional level in OVX group than sham group. However, no difference existed in the expression of DMT-1. Then, ferric ammonium citrate (FAC) was used as a donor of iron for OVX rats. The FAC group manifested significant iron accumulation by increased serum iron and hepatic iron content. In addition, FAC treatment accelerated bone loss and decreased BMD and biomechanics in OVX rats. Moreover, bone biomarker β-CTX rather than osteocalcin increased significantly in FAC groups than OVX group.

conclusionsIn conclusion, no iron accumulation occurred in OVX rats. Furthermore, iron accumulation could further deteriorate osteopenia through enhanced bone resorption.

Indexed as

Bone ResorptionOsteoporosis, PostmenopausalAnimalsBone DensityEstrogensFemaleHumansIronOsteocalcinOvariectomyRatsEstrogensIronOsteocalcinBiomechanical testingIron metabolismIron overloadMicro-CTOsteoporosisOvariectomized rat

Identifiers

PMID34429140
PMCPMC8383398
OpenAlexW3194850400

What OpenQuestion holds

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LicenceCC BY
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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.