Evidence map›Paper›PMID 28680352›Full record

ArticleJournal of medical biochemistry2017

Analysis of Changes in Parathyroid Hormone and 25 (OH) Vitamin D Levels with Respect to Age, Gender and Season: A Data Mining Study.

Muhittin A Serdar, Başar Batu Can, Meltem Kilercik, Zeynep A Durer, Fehime Benli Aksungar, Mustafa Serteser, Abdurrahman Coskun, Aysel Ozpinar, Ibrahim Unsal

Open access · diamondAbstract read
In one paragraph

Article in Journal of medical biochemistry, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 2 pooled it
6.1field-weighted citation impact, top 3% 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, 2 syntheses or guidelines pooled it, 61 citations in OpenAlex.

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  16. The Impact of Vitamin D on Skin Aging.International journal of molecular sciences · 2021
    Review
  17. Review
  18. Vitamin D, sport and health: a still unresolved clinical issue.Journal of endocrinological investigation · 2020
    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 at 1 institution in 1 country.

Muhittin A SerdarSchool of Medicine, Department of Medical Biochemistry, Acibadem University, Istanbul, Turkey.
Başar Batu CanSchool of Medicine, Department of Medical Biochemistry, Acibadem University, Istanbul, Turkey.
Meltem KilercikSchool of Medicine, Department of Medical Biochemistry, Acibadem University, Istanbul, Turkey.
Zeynep A DurerSchool of Medicine, Department of Medical Biochemistry, Acibadem University, Istanbul, Turkey.
Fehime Benli AksungarSchool of Medicine, Department of Medical Biochemistry, Acibadem University, Istanbul, Turkey.
Mustafa SerteserSchool of Medicine, Department of Medical Biochemistry, Acibadem University, Istanbul, Turkey.
Abdurrahman CoskunSchool of Medicine, Department of Medical Biochemistry, Acibadem University, Istanbul, Turkey.
Aysel OzpinarSchool of Medicine, Department of Medical Biochemistry, Acibadem University, Istanbul, Turkey.
Ibrahim UnsalSchool of Medicine, Department of Medical Biochemistry, Acibadem University, Istanbul, Turkey.
Acıbadem University · TR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background25 (OH) vitamin D3 (25(OH)D) and parathyroid hormone (PTH) are important regulators of calcium homeostasis. The aim of this study was to retrospectively determine the cut-off for sufficient 25(OH)D in a four-season region and the influence of age, seasons, and gender on serum 25(OH)D and PTH levels.

methodsLaboratory results of 9890 female and 2723 male individuals aged 38.8±22.1 years who had simultaneous measurements of 25(OH)D and PTH were retrospectively analyzed by statistical softwares. Serum 25(OH)D and PTH levels were measured by a mass spectrometry method and by an electrochemiluminescence immunoassay, respectively.

resultsMean serum 25(OH)D levels showed a sinusoidal fluctuation throughout the year and were significantly (p<0.01) higher in summer and autumn. On the other hand, PTH levels were significantly higher (p<0.01) in women and showed an opposite response to seasonal effects relative to 25(OH)D. Lowest levels of 25(OH)D were detected in people aged between 20 and 40 years whereas PTH hormone levels were gradually increasing in response to aging. The significant exponential inverse relationship that was found between PTH and 25(OH)D (PTH=exp(4.12-0.064

conclusionsOur retrospective study based on large data set supports the suitability of the currently accepted clinical cut-off of 75 nmol/L for sufficient 25(OH)D. However, the issue of assessing Vitamin D deficiency remains difficult due to seasonal variations in serum 25(OH)D. Therefore, PTH measurements should complement 25(OH)D results for diagnosing Vitamin D deficiency. It is imperative that seasonally different criteria should be considered in future.

Indexed as

25(OH)Dparathyroid hormonevitamin Dvitamin D deficiency

Identifiers

PMID28680352
PMCPMC5471662
OpenAlexW2579983615

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.