Evidence map›Paper›PMID 22454290›Full record

ArticleAmerican journal of physiology. Endocrinology and metabolism2012

Deletion of prolyl carboxypeptidase attenuates the metabolic effects of diet-induced obesity.

Jin Kwon Jeong, Gyorgyi Szabo, Giuseppina Mattace Raso, Rosaria Meli, Sabrina Diano

Abstract read
In one paragraph

Article in American journal of physiology. Endocrinology and metabolism, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing 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.

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

16 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. POMC Neurons: From Birth to Death.Annual review of physiology · 2017
    Review
  7. Article
  8. Review
  9. Article
  10. Hypothalamic prolyl endopeptidase (PREP) regulates pancreatic insulin and glucagon secretion in mice.Proceedings of the National Academy of Sciences of the United States of America · 2014
    Article
  11. Article
  12. Article
  13. Article
  14. Prolyl carboxypeptidase and its inhibitors in metabolism.Trends in endocrinology and metabolism: TEM · 2013
    Article
  15. Article
  16. 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

5 authors.

Jin Kwon JeongProgram in Integrative Cell Signaling and Neurobiology of Metabolism, Yale University School of Medicine, New Haven, Connecticut 06520-208063, USA.
Gyorgyi Szabo
Giuseppina Mattace Raso
Rosaria Meli
Sabrina Diano

Funding

A Carboxypeptidase in the Regulation of Hypothalamic CircuitryR01DK084065 · NIDDK · YALE UNIVERSITY · PI DIANO, SABRINA · 2010 to 2013
$1.4M
NIDDK NIH HHS R01 DK084065NIDDK NIH HHS R01-DK-084065
6 · The paper itself

Abstract

α-Melanocyte-stimulating hormone (α-MSH) is a critical regulator of energy metabolism. Prolyl carboxypeptidase (PRCP) is an enzyme responsible for its degradation and inactivation. PRCP-null mice (PRCP(gt/gt)) showed elevated levels of brain α-MSH, reduced food intake, and a leaner phenotype compared with wild-type controls. In addition, they were protected against diet-induced obesity. Here, we show that PRCP(gt/gt) animals have improved metabolic parameters compared with wild-type controls under a standard chow diet (SD) as well as on a high-fat diet (HFD). Similarly to when they are exposed to SD, PRCP(gt/gt) mice exposed to HFD for 13 wk showed a leaner phenotype due to decreased fat mass, increased energy expenditure, and locomotor activity. They also showed improved insulin sensitivity and glucose tolerance compared with WT controls and a significant reduction in fasting glucose levels. These improvements occured before changes in body weight and composition were evident, suggesting that the beneficial effect of PRCP ablation is independent of the adiposity levels. In support of a reduced gluconeogenesis, liver PEPCK and G-6-Pase mRNA levels were reduced significantly in PRCP(gt/gt) compared with WT mice. A significant decrease in liver weight and hepatic triglycerides were also observed in PRCP(gt/gt) compared with WT mice. Altogether, our data suggest that PRCP is an important regulator of energy and glucose homeostasis since its deletion significantly improves metabolic parameters in mice exposed to both SD and HFD.

Indexed as

AnimalsBody CompositionBody WeightCarboxypeptidasesDiet, High-FatEnergy MetabolismFatty AcidsGene DeletionGluconeogenesisGlucoseGlucose Tolerance TestHomeostasisHormonesLeptinLiverMaleCarboxypeptidasesFatty AcidsGlucoseHormonesLeptinlysosomal Pro-X carboxypeptidase

Identifiers

PMID22454290
PMCPMC3378159

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.