Evidence map›Paper›PMID 19244380›Full record

ArticleThe Journal of nutrition2009

Leucine supplementation of drinking water does not alter susceptibility to diet-induced obesity in mice.

Ali Nairizi, Pengxiang She, Thomas C Vary, Christopher J Lynch

Open access · greenAbstract read
In one paragraph

Article in The Journal of nutrition, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed, 1 pooled it
5.6field-weighted citation impact, top 4% 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

50 citing papers in PubMed, 1 synthesis or guideline pooled it, 101 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Article
  5. The role of branched-chain amino acids and their downstream metabolites in mediating insulin resistance.Journal of pharmacy & pharmaceutical sciences : a publication of the Canadian Society for Pharmaceutical Sciences, Societe canadienne des sciences pharmaceutiques · 2024
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Dietary Intake of Branched-Chain Amino Acids and Risk of Colorectal Cancer.Cancer prevention research (Philadelphia, Pa.) · 2020
    Article
  15. Article
  16. Article
  17. Branched Chain Amino Acids in Metabolic Disease.Current diabetes reports · 2018
    Review
  18. Article
  19. Article
  20. 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

4 authors at 1 institution in 1 country.

Ali NairiziPenn State Hershey Institute for Diabetes and Obesity and Department of Cellular and Molecular Physiology, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.
Pengxiang She
Thomas C Vary
Christopher J Lynch
Penn State Milton S. Hershey Medical Center · US

Funding

MYOCARDIAL PROTEIN SYNTHESIS AFTER ALCOHOL INTOXICATIONR01AA012814 · NIAAA · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI LANG, CHARLES H. · 2000 to 2010
$2.8M
Role of Leucine Metabolism in Leucine SignalingR01DK062880 · NIDDK · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI LYNCH, CHRISTOPHER JOHN · 2003 to 2010
$2.8M
REGULATION OF PROTEIN TURNOVER IN SEPSISR01GM039277 · NIGMS · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI KIMBALL, SCOT R · 1989 to 2010
$2.7M
REGULATION OF ADIPOCYTE PROTEIN SYNTHESIS BY AMINO ACIDSR01DK053843 · NIDDK · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI LYNCH, CHRISTOPHER JOHN · 1999 to 2007
$2.0M
NIAAA NIH HHS R01 AA12814NIDDK NIH HHS R01 DK053843NIDDK NIH HHS R01 DK062880NIGMS NIH HHS R01 GM39277
6 · The paper itself

Abstract

Branched-chain amino acids (BCAA), Leu, and the signaling pathways they regulate have been reported to either improve or worsen adiposity and insulin sensitivity. Therefore, it is unclear whether dietary supplementation of Leu would be beneficial. To help address this question, we examined the effect of adding Leu (150 mmol/L; Expt. 1 and Expt. 2) or BCAA (109 mmol/L of each; Expt. 3) to the drinking water on diet-induced obesity (induced with a 60-kJ% fat diet) in singly housed C57BL6/J male mice for at least 14 wk. Liquid and solid food intakes were evaluated weekly along with body weight. During the last few weeks, several blood samples were taken at different times for plasma glucose, total cholesterol, or Leu measurements. Metabolic rate by indirect calorimetry, locomotor activity by light beam breaking, body composition by H1-NMR, and insulin tolerance were also determined. Compared with control, supplementation did not affect body weight, food intake, oxygen consumption, locomotor activity, body composition, insulin tolerance, or total cholesterol. In fed mice, this method of Leu supplementation only increased plasma Leu by 76% when the supplemented group was compared with control. On the other hand, after overnight food deprivation, the plasma Leu did not differ between these 2 groups, even though the mice in the supplemented group had continuous access to Leu-containing water during the solid food deprivation. Taken together, the results do not provide evidence that either Leu or BCAA supplementation of drinking water ameliorates diet-induced obesity in mice, although it may improve glycemia.

Indexed as

Dietary SupplementsObesityWaterAnimalsBehavior, AnimalBody CompositionBody WeightCholesterolInsulinLeucineMiceMice, Inbred C57BLMotor ActivityOxygenRespirationTriglyceridesCholesterolInsulinLeucineOxygenTriglyceridesWater

Identifiers

PMID19244380
PMCPMC2666366
OpenAlexW2126876216

What OpenQuestion holds

Textmetadata
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.