Evidence map›Paper›PMID 22768976›Full record

ArticleBMC nephrology2012

Lower serum prohepcidin levels associated with lower iron and erythropoietin requirements in hemodialysis patients with chronic hepatitis C.

Yasar Caliskan, Berna Yelken, Abdullah Ozkok, Numan Gorgulu, Halil Yazici, Aysegul Telci, Alaattin Yildiz

Open access · goldAbstract readControlled Clinical Trial
In one paragraph

Article in BMC nephrology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.0field-weighted citation impact, top 23% 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

6 citing papers in PubMed, 18 citations in OpenAlex.

  1. Trial
  2. Review
  3. Article
  4. Article
  5. Article
  6. 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

7 authors at 1 institution in 1 country.

Yasar CaliskanDivision of Nephrology, Department of Internal Medicine, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey.
Berna Yelken
Abdullah Ozkok
Numan Gorgulu
Halil Yazici
Aysegul Telci
Alaattin Yildiz
Istanbul University · TR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPatients with chronic HCV infection have increased liver iron. Recently identified protein hepcidin synthesized in the liver, is thought to be a key regulator for iron homeostasis and is induced by infection and inflammation. Lower erythropoietin and iron supplementation requirements were previously reported in HD patients with HCV infection. We investigated the association of prohepcidin with inflammation and iron parameters in HD patients with and without chronic HCV infection.

methodsSixty patients (27 male, 33 female, mean age 50±15 years) on chronic HD were included. Parameters related to iron metabolism (ferritin, serum iron and total iron binding capacity (TIBC)), inflammation (hs-CRP, TNF-α and IL-6) and prohepcidin levels were measured. The response to treatment (erythropoiesis-stimulating agent (ESA) resistance index) was assessed from the ratio of the weekly erythropoietin (rhuEPO) dose to hemoglobin (Hb) per unit weight.

resultsSerum prohepcidin levels of HCV positive patients (135±25 ng/mL) were significantly lower than HCV negative patients [148±18 ng/mL, (p=0.025)]. Serum IL-6 levels of HCV positive patients were also significantly lower than HCV negative patients (p=0.016). Serum prohepcidin levels were positively correlated with ferritin (r=0.405, p=0.001) and IL-6 (r=0.271, p=0.050) levels in HD patients. In the HCV positive group, serum prohepcidin levels significantly correlated with ferritin levels (r=0.514 p=0.004). In the HCV negative group, serum prohepcidin levels significantly correlated with serum IL-6 levels (r=0.418, p=0.027). In multiple regression analysis performed to predict prohepcidin in HCV positive patients, serum ferritin was found to be an independent variable (r=0.28, p=0.008).

conclusionsHCV positive HD patients have low levels of serum prohepcidin and IL-6 which might account for iron accumulation together with lower iron and rhuEPO requirements in these patients.

Indexed as

Renal DialysisAdolescentAdultAgedAged, 80 and overAntimicrobial Cationic PeptidesBiomarkersCytokinesErythropoietinFemaleHepatitis, ChronicHepcidinsHumansIronMaleMiddle AgedAntimicrobial Cationic PeptidesBiomarkersCytokinesErythropoietinHepcidinsIronProtein Precursors

Identifiers

PMID22768976
PMCPMC3496582
OpenAlexW2017124577

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.