Evidence map›Paper›PMID 25753604›Full record

ArticleJournal of renal nutrition : the official journal of the Council on Renal Nutrition of the National Kidney Foundation2015

The Effects of Parenteral Amino Acid Therapy on Protein Carbamylation in Maintenance Hemodialysis Patients.

Sahir Kalim, Guillermo Ortiz, Caitlin A Trottier, Joseph J Deferio, S Ananth Karumanchi, Ravi I Thadhani, Anders H Berg

Registry-linked trialAbstract read
In one paragraph

Article in Journal of renal nutrition : the official journal of the Council on Renal Nutrition of the National Kidney Foundation, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01612429 (Amino Acid Therapy to Modify Protein Carbamylation in End Stage Renal Disease), which is not on this map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.5field-weighted citation impact, top 12% 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.

NCT01612429 early_phase1completednot on this map

Amino Acid Therapy to Modify Protein Carbamylation in End Stage Renal Disease

TypeinterventionalSponsorMassachusetts General HospitalRan2013 to 2015Enrolled23ConditionsEnd Stage Renal Failure on DialysisArmsAmino acid supplementation
3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 35 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Review
  5. Article
  6. Review
  7. Review
  8. Review
  9. Review
  10. Protein carbamylation in end stage renal disease: is there a mortality effect?Current opinion in nephrology and hypertension · 2018
    Review
  11. Mechanisms and consequences of carbamoylation.Nature reviews. Nephrology · 2017
    Review
  12. Reduction of carbamylated albumin by extended hemodialysis.Hemodialysis international. International Symposium on Home Hemodialysis · 2016
    Article
  13. 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 3 institutions in 1 country.

Sahir KalimDivision of Nephrology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts. Electronic address: skalim@partners.org.
Guillermo OrtizDivision of Nephrology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts.
Caitlin A TrottierDivision of Nephrology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts.
Joseph J DeferioDivision of Nephrology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts.
S Ananth KarumanchiDivision of Nephrology and Center for Vascular Biology Research, Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts.
Ravi I ThadhaniDivision of Nephrology, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts.
Anders H BergDivision of Clinical Chemistry, Department of Pathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts.
Massachusetts General Hospital · USHarvard University · USCenter for Vascular Biology Research · US

Funding

Harvard Clinical and Translational Science CenterKL2TR001100 · NCATS · HARVARD MEDICAL SCHOOL · PI NADLER, LEE MARSHALL · 2013 to 2017
$8.5M
The role of carbamylation in uremia associated heart diseaseK08HL121801 · NHLBI · BETH ISRAEL DEACONESS MEDICAL CENTER · PI BERG, ANDERS HAYDEN · 2014 to 2017
$588k
Patient Oriented Studies of Vitamin D in Chronic Kidney DiseaseK24DK094872 · NIDDK · MASSACHUSETTS GENERAL HOSPITAL · PI THADHANI, RAVI · 2012 to 2016
$546k
Howard Hughes Medical InstituteNCATS NIH HHS KL2 TR001100NCATS NIH HHS KL2TR001100NHLBI NIH HHS K08 HL121801NIDDK NIH HHS K24 DK094872NIDDK NIH HHS L30 DK099815
6 · The paper itself

Abstract

objectiveProtein carbamylation is a urea-driven post-translational protein modification associated with mortality in dialysis patients. Free amino acids (AAs) are competitive inhibitors of protein carbamylation and animal studies suggest increasing AA concentrations reduces carbamylation burden. We hypothesized that AA therapy in maintenance hemodialysis patients would reduce carbamylation, carrying the potential to improve clinical outcomes.

designProspective pilot clinical trial (NCT1612429).

settingThe study was conducted from March 2013 to March 2014 in outpatient dialysis facilities in the Boston metropolitan area. SUBJECTS AND

interventionWe enrolled 23 consecutively consenting hemodialysis subjects, infusing the first 12 individuals with 250 cc of AAs 3 times per week postdialysis over 8 weeks. The remaining 11 subjects served as controls.

main outcome measureChange in carbamylated albumin (C-Alb), a measure of total body carbamylation burden, between baseline and 8 weeks was the primary outcome.

resultsThe treated and control groups had similar clinical characteristics and similar baseline C-Alb levels (mean ± SE 9.5 ± 2.4 and 9.3 ± 1.3 mmol/mol, respectively; P = .61). The treated arm showed a significant reduction in C-Alb compared with controls at 4 weeks (8.4% reduction in the treated arm vs. 4.3% increase in controls; P = .03) and the effect was greater by 8 weeks (15% reduction in the treated vs. 1% decrease in controls; P = .01).

conclusionIn this pilot study, AA therapy appeared safe and effective at reducing C-Alb levels in hemodialysis patients compared with no treatment. The impact of reduced protein carbamylation on clinical outcomes should be further investigated.

Indexed as

Renal DialysisAmino AcidsCarbamatesFemaleHumansKidney Failure, ChronicMaleMiddle AgedParenteral NutritionPilot ProjectsProspective StudiesSerum AlbuminAmino AcidsCarbamatesSerum Albumin

Identifiers

PMID25753604
PMCPMC4469570
OpenAlexW2089374494

What OpenQuestion holds

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Registered trials

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.