Evidence map›Paper›PMID 28976989›Full record

Trial reportPloS one2017

Vitamin D and methylarginines in chronic kidney disease (CKD).

Claudia Torino, Patrizia Pizzini, Sebastiano Cutrupi, Rocco Tripepi, Giovanni Tripepi, Francesca Mallamaci, Carmine Zoccali

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in PloS one, 2017. 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
0.3field-weighted citation impact, top 38% 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

5 citing papers in PubMed, 6 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Metabolomics in Endocrinology: The Way Forward.Indian journal of endocrinology and metabolism
    Review
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 1 institution in 1 country.

Claudia TorinoCNR-IFC, Clinical Epidemiology and Physiopathology of Renal Diseases and Hypertension & Nephrology and Renal Transplantation Unit, Reggio Calabria, Italy.
Patrizia PizziniCNR-IFC, Clinical Epidemiology and Physiopathology of Renal Diseases and Hypertension & Nephrology and Renal Transplantation Unit, Reggio Calabria, Italy.
Sebastiano CutrupiCNR-IFC, Clinical Epidemiology and Physiopathology of Renal Diseases and Hypertension & Nephrology and Renal Transplantation Unit, Reggio Calabria, Italy.
Rocco TripepiCNR-IFC, Clinical Epidemiology and Physiopathology of Renal Diseases and Hypertension & Nephrology and Renal Transplantation Unit, Reggio Calabria, Italy.
Giovanni TripepiCNR-IFC, Clinical Epidemiology and Physiopathology of Renal Diseases and Hypertension & Nephrology and Renal Transplantation Unit, Reggio Calabria, Italy.
Francesca MallamaciCNR-IFC, Clinical Epidemiology and Physiopathology of Renal Diseases and Hypertension & Nephrology and Renal Transplantation Unit, Reggio Calabria, Italy.
Carmine ZoccaliCNR-IFC, Clinical Epidemiology and Physiopathology of Renal Diseases and Hypertension & Nephrology and Renal Transplantation Unit, Reggio Calabria, Italy.ORCID http://orcid.org/0000-0002-6616-1996
Istituto di Fisiologia Clinica · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundVitamin D associates with the plasma concentration of the endogenous inhibitor of the nitric oxide system asymmetric dimethyl arginine (ADMA) and cross-sectional studies in CKD patients treated with the vitamin D receptor activator paricalcitol show that plasma ADMA is substantially less than in those not receiving this drug.

methodsIn the frame of a randomized, double-blind, placebo controlled trial, the Paracalcitol and ENdothelial fuNction in chronic kidneY disease (PENNY), we investigated whether vitamin D receptor activation by paricalcitol (2 μg/day x 12 weeks) affects the plasma concentration of ADMA and symmetric dimethyl arginine (SDMA) in 88 patients with stage 3 to 4 CKD.

resultsParicalcitol produced the expected small rise in serum calcium and phosphate and a marked PTH suppression. However, ADMA [Paricalcitol: baseline 0.75 μMol/L (95%CI: 0.70-0.81), 12 week 0.72 μMol/L (95%CI: 0.66-0.78); Placebo: baseline 0.75 μMol/L (95%CI: 0.70-0.90) 12 weeks 0.70 μMol/L (95%CI: 0.66-0.74)] and SDMA [Paricalcitol: baseline 0.91 μMol/L (95%CI: 0.82-1.00), 12 week 0.94 μMol/L (95%CI: 0.82-0.1.06); Placebo: baseline 0.91 μMol/L (95%CI: 0.82-1.06) 12 weeks 0.99 μMol/L (95%CI: 0.88-1.10)] remained unchanged during the trial and 2 weeks after stopping these treatments.

conclusionsParicalcitol does not modify plasma ADMA and SDMA in patients with stage 3-4 CKD. The apparent beneficial effects of paricalcitol on ADMA registered in cross-sectional studies is likely attributable to confounding by indication rather than to a true effect of this drug on ADMA metabolism.

Indexed as

AgedArginineCalciumCross-Sectional StudiesDouble-Blind MethodErgocalciferolsFemaleHumansKidney Failure, ChronicMaleMiddle AgedParathyroid HormonePlacebosVitamin DArginineCalciumErgocalciferolsN,N-dimethylarginineParathyroid HormoneparicalcitolPlacebosVitamin D

Identifiers

PMID28976989
PMCPMC5627906
OpenAlexW2763753385

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.