Evidence map›Paper›PMID 39940305›Full record

ArticleNutrients2025

Impact of Reduced Vitamin D Levels on Pain, Function, and Severity in Knee or Hip Osteoarthritis.

Cláudia Nascimento Montemor, Marcos Tadeu Parron Fernandes, Audrey Souza Marquez, Paulo Roberto Bignardi, Regina Célia Poli, Gustavo Aliano Gâmbaro, Rubens Alexandre da Silva, Suzy Ngomo, Karen Barros Parron Fernandes

Abstract read
In one paragraph

Article in Nutrients, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
–field-weighted citation impact
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

5 citing papers in PubMed.

  1. Review
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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

9 authors.

Cláudia Nascimento MontemorSchool of Medicine, Pontifical Catholic University of Parana (PUCPR), Londrina 86072-360, PR, Brazil.
Marcos Tadeu Parron FernandesSocial Responsability Institute, Sirio Libanes Hospital, Sao Paulo 01401-000, SP, Brazil.
Audrey Souza MarquezDepartment of Research and Scientific Advisory, Integrative Health Technologies LLC (IHT), Orlando, FL 3885-3569, USA.ORCID 0000-0001-7097-4204
Paulo Roberto BignardiSchool of Medicine, Pontifical Catholic University of Parana (PUCPR), Londrina 86072-360, PR, Brazil.ORCID 0000-0002-4730-0946
Regina Célia PoliHealth Sciences Research Center, University Pitágoras Unopar (UNOPAR), Londrina 86047-790, PR, Brazil.
Gustavo Aliano GâmbaroSchool of Medicine, Pontifical Catholic University of Parana (PUCPR), Londrina 86072-360, PR, Brazil.
Rubens Alexandre da SilvaDepartment of Health Sciences, Université du Québec à Chicoutimi (UQAC), Saguenay, QC G7H 2B1, Canada.
Suzy NgomoDepartment of Health Sciences, Université du Québec à Chicoutimi (UQAC), Saguenay, QC G7H 2B1, Canada.ORCID 0000-0003-3538-7025
Karen Barros Parron FernandesSchool of Medicine, Pontifical Catholic University of Parana (PUCPR), Londrina 86072-360, PR, Brazil.ORCID 0000-0002-1276-4900

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundVitamin D is beneficial for musculoskeletal health. Although low levels of vitamin D are linked to increased pain in knee osteoarthritis (OA), their association with functionality remains understudied.

objectiveThis study aimed to investigate the association between vitamin D deficiency and functional status in elderly individuals with OA and explore the potential correlation between vitamin D deficiency and plasma levels of tumor necrosis factor alpha (TNF-α) and interleukin-6 (IL-6).

methodsThe study included older adults (≥60 years) from an ageing study, encompassing 105 OA patients and 152 controls. OA diagnosis was confirmed radiographically, and the WOMAC questionnaire assessed functional impairment in these patients. Blood samples were collected to measure 25(OH) vitamin D levels by chemiluminescence and TNF-α and IL-6 levels by ELISA.

resultsPatients with vitamin D insufficiency/deficiency exhibited more severe cases of OA compared to those with normal vitamin D levels (

conclusionsReduced levels of vitamin D are associated with more severe cases of hip and knee osteoarthritis, increased pain, greater functional impairment, and elevated serum levels of TNF-α and IL-6. Further research is required to elucidate the mechanisms underlying the influence of vitamin D on osteoarthritis and to evaluate the potential benefits of vitamin D supplementation for mitigating disease symptoms and progression.

Indexed as

Osteoarthritis, HipOsteoarthritis, KneePainVitamin DVitamin D DeficiencyAgedCase-Control StudiesFemaleHumansInterleukin-6MaleMiddle AgedSeverity of Illness IndexTumor Necrosis Factor-alphaIL6 protein, humanInterleukin-6Tumor Necrosis Factor-alphaVitamin Delderlyfunctional statusinterleukin-6osteoarthritisseveritytumor necrosis factorvitamin D

Identifiers

PMID39940305
PMCPMC11820127

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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.