Evidence map›Paper›PMID 20338795›Full record

ArticleMolecular genetics and metabolism2010

Measuring in vivo ureagenesis with stable isotopes.

Marc Yudkoff, Nicholas Ah Mew, Yevgeny Daikhin, Oksana Horyn, Ilana Nissim, Itzhak Nissim, Irma Payan, Mendel Tuchman

Registry-linked trialAbstract read
In one paragraph

Article in Molecular genetics and metabolism, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01341379 (Increasing Ureagenesis in Inborn Errors of Metabolism With N-Carbamylglutamate), which is not on this map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
–field-weighted citation impact
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.

NCT01341379 phase2withdrawnnot on this map

Increasing Ureagenesis in Inborn Errors of Metabolism With N-Carbamylglutamate

TypeinterventionalSponsorChildren's Hospital of PhiladelphiaRan2010 to 2012Enrolled0ConditionsUrea Cycle Disorders, Inborn, Inborn Errors of Metabolism, Propionic Acidemia, Methylmalonic AcidemiaArmsN-carbamylglutamate
3 · Its place in the literature

Who cites it

9 citing papers in PubMed.

  1. Article
  2. Review
  3. Review
  4. Article
  5. Article
  6. Article
  7. Review
  8. Review
  9. 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

8 authors.

Marc YudkoffChildren's Hospital of Philadelphia, Department of Pediatrics, University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA. yudkoff@email.chop.edu
Nicholas Ah Mew
Yevgeny Daikhin
Oksana Horyn
Ilana Nissim
Itzhak Nissim
Irma Payan
Mendel Tuchman

Funding

Training (Career Development) ComponentU54HD061221 · NICHD · CHILDREN'S RESEARCH INSTITUTE · PI AH MEW, NICHOLAS, GROPMAN, ANDREA LYNNE · 2009 to 2023
$20.8M
TRANSGENIC MOUSE MODELS OF MENTAL RETARDATIONP30HD026979 · NICHD · CHILDREN'S HOSP OF PHILADELPHIA · PI COULTER, DOUGLAS A · 1990 to 2015
$15.3M
ZIDOVUDINE VS 2',3'DIDEHYDRO-3'DEOXYTHYMIDINE IN CHILDRENM01RR000240 · NCRR · CHILDREN'S HOSP OF PHILADELPHIA · PI ALTSCHULER, STEVEN M · 1985 to 2006
$15.3M
RARE DISEASES CRC: UREA CYCLE DISORDERSU54RR019453 · NCRR · CHILDREN'S RESEARCH INSTITUTE · PI BATSHAW, MARK L. · 2003 to 2008
$7.0M
The Synthesis of GABA in Epileptic BrainP01NS054900 · NINDS · CHILDREN'S HOSP OF PHILADELPHIA · PI COULTER, DOUGLAS A · 2007 to 2011
$6.4M
N-acetylglutamate Synthase: Structure, Function & DefectsR01DK064913 · NIDDK · CHILDREN'S RESEARCH INSTITUTE · PI CALDOVIC, LJUBICA MORIZONO · 2003 to 2017
$4.9M
N-carbamylglutamate in the treatment of hyperammonemiaR01HD058567 · NICHD · CHILDREN'S RESEARCH INSTITUTE · PI TUCHMAN, MENDEL · 2008 to 2016
$4.4M
REGULATION OF 15N UREA ISOTOPOMERS PRODUCTIONR01DK053761 · NIDDK · CHILDREN'S HOSP OF PHILADELPHIA · PI NISSIM, ITZHAK · 1999 to 2013
$4.4M
The molecular bases of inherited urea cycle disorders and ureagenesis regulationR01DK047870 · NIDDK · UNIVERSITY OF MINNESOTA TWIN CITIES · PI TUCHMAN, MENDEL · 1995 to 2010
$3.4M
N-acetylglutamate synthase function in regulation of ureagenesisR56DK064913 · NIDDK · CHILDREN'S RESEARCH INSTITUTE · PI CALDOVIC, LJUBICA MORIZONO · 2020 to 2020
$223k
Regulation of 15N Urea Isotopomers ProductionR56DK053761 · NIDDK · CHILDREN'S HOSP OF PHILADELPHIA · PI NISSIM, ITZHAK · 2009 to 2009
$165k
NCRR NIH HHS M01 RR000240NCRR NIH HHS RR00240NCRR NIH HHS RR019453NCRR NIH HHS U54 RR019453NICHD NIH HHS HD058567NICHD NIH HHS HD26979NICHD NIH HHS P30 HD026979NICHD NIH HHS R01 HD058567NICHD NIH HHS U54 HD061221NIDDK NIH HHS DK064913NIDDK NIH HHS DK47870NIDDK NIH HHS DK53761NIDDK NIH HHS R01 DK047870NIDDK NIH HHS R01 DK053761NIDDK NIH HHS R01 DK064913NIDDK NIH HHS R56 DK053761NIDDK NIH HHS R56 DK064913NINDS NIH HHS NS054900NINDS NIH HHS P01 NS054900
6 · The paper itself

Abstract

Stable isotopes have been an invaluable adjunct to biomedical research for more than 70years. Indeed, the isotopic approach has revolutionized our understanding of metabolism, revealing it to be an intensely dynamic process characterized by an unending cycle of synthesis and degradation. Isotopic studies have taught us that the urea cycle is intrinsic to such dynamism, since it affords a capacious mechanism by which to eliminate waste nitrogen when rates of protein degradation (or dietary protein intake) are especially high. Isotopes have enabled an appreciation of the degree to which ureagenesis is compromised in patients with urea cycle defects. Indeed, isotopic studies of urea cycle flux correlate well with the severity of cognitive impairment in these patients. Finally, the use of isotopes affords an ideal tool with which to gauge the efficacy of therapeutic interventions to augment residual flux through the cycle.

Indexed as

Amino-Acid N-AcetyltransferaseAmmonium ChlorideCarbon DioxideCarbon IsotopesHumansIsotope LabelingUreaAmino-Acid N-AcetyltransferaseAmmonium ChlorideCarbon DioxideCarbon IsotopesUrea

Identifiers

PMID20338795
PMCPMC2858793

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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.