Evidence map›Paper›PMID 24131546›Full record

ArticleQJM : monthly journal of the Association of Physicians2014

Plasma exchange induces vitamin D deficiency.

T F Hiemstra, A Casian, P Boraks, D R Jayne, I Schoenmakers

Open access · bronzeAbstract read
In one paragraph

Article in QJM : monthly journal of the Association of Physicians, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 20% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 44 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Trial
  5. Article
  6. Article
  7. Two cases of severe vitamin DJournal of nephrology · 2023
    Article
  8. Article
  9. Vitamin D and Atherosclerotic Cardiovascular Disease.The Journal of clinical endocrinology and metabolism · 2019
    Article
  10. Article
  11. Article
  12. Observational
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  14. Review
  15. 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

5 authors at 2 institutions in 1 country.

T F HiemstraDivisions of Nephrology and Clinical Pharmacology, Department of Medicine, University of Cambridge, Box 118, Addenbrooke's Hospital, Hills Road, Cambridge CB2 0QQ, UK. tfh24@cam.ac.uk.
A Casian
P Boraks
D R Jayne
I Schoenmakers
Addenbrooke's Hospital · GBMRC Human Nutrition Research · GB

Funding

Medical Research Council MC_U105960371
6 · The paper itself

Abstract

backgroundPlasma exchange is used in the treatment of diseases mediated by pathogenic circulating proteins, or for transplant desensitization. Its non-targeted nature results in the depletion of physiologically important molecules, and it is often complicated by hypocalcaemia.

aimTo determine the effects of plasma exchange on vitamin D binding protein (DBP) and associated vitamin D metabolites.

designSingle-centre prospective cohort study of 11 patients.

methodsDBP and vitamin D metabolites were measured before and immediately after five plasma exchanges, and 7 and 28 days after discontinuation of plasma exchange.

resultsPlasma exchange reduced plasma DBP concentration from 196.9 ± 53.2 to 98.5 ± 34 μg/ml (P = 0.0001), 1,25-dihydroxyvitamin D from 103 ± 52 to 42 ± 4 pmol/l (P = 0.003) and 25-hydroxyvitamin D from 49.7 ± 29 to 22 ± 9.4 nmol/l (P = 0.0017), through their removal in effluent. After 7 days, DBP and 1,25-dihydroxyvitamin D were not significantly different from baseline, but 25-hydroxyvitamin D remained significantly lower after 7 days (26.4 ± 9.8 nmol/l, P = 0.02) and 28 days (30.8 ± 15.5 nmol/l, P = 0.048). Corrected calcium decreased from 2.23 ± 0.11 to 1.98 ± 0.08 mmol/l (P = 0.0007) immediately after five treatments. Plasma calcium was significantly associated with 1,25-dihydroxyvitamin D (r(2) = 0.79, P < 0.0001).

conclusionPlasma exchange induced an acute reversible decrease in plasma 1,25-dihydroxyvitamin D, DBP, calcium and a sustained decrease in plasma 25-hydroxyvitamin D.

Indexed as

AdultAgedCalciumFemaleHumansMaleMiddle AgedPlasma ExchangeProspective StudiesVitamin DVitamin D-Binding ProteinVitamin D Deficiency1,25-dihydroxyvitamin D25-hydroxyvitamin DCalciumVitamin DVitamin D-Binding Protein

Identifiers

PMID24131546
PMCPMC3905633
OpenAlexW2131626713

What OpenQuestion holds

Textmetadata
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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.