Evidence map›Paper›PMID 21278136›Full record

ArticleAmerican journal of physiology. Heart and circulatory physiology2011

Restoring leptin signaling reduces hyperlipidemia and improves vascular stiffness induced by chronic intermittent hypoxia.

Ronghua Yang, Gautam Sikka, Jill Larson, Vabren L Watts, Xiaolin Niu, Carla L Ellis, Karen L Miller, Andre Camara, Christian Reinke, Vladimir Savransky and 4 more

Open access · greenAbstract read
In one paragraph

Article in American journal of physiology. Heart and circulatory physiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.3field-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.

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

19 citing papers in PubMed, 37 citations in OpenAlex.

  1. History and future of leptin: Discovery, regulation and signaling.Metabolism: clinical and experimental · 2024
    Review
  2. Review
  3. Observational
  4. Article
  5. Review
  6. Gut microbiota regulates cardiac ischemic tolerance and aortic stiffness in obesity.American journal of physiology. Heart and circulatory physiology · 2019
    Article
  7. Article
  8. Article
  9. Review
  10. Review
  11. Killing Me Unsoftly: Causes and Mechanisms of Arterial Stiffness.Arteriosclerosis, thrombosis, and vascular biology · 2017
    Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. 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

14 authors at 4 institutions in 2 countries.

Ronghua YangDepartment of Medicine, Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA.
Gautam Sikka
Jill Larson
Vabren L Watts
Xiaolin Niu
Carla L Ellis
Karen L Miller
Andre Camara
Christian Reinke
Vladimir Savransky
Vsevolod Y Polotsky
Christopher P O'Donnell
Dan E Berkowitz
Lili A Barouch
Institute of Biophysics and Biomedical Engineering · BGJohns Hopkins University · USJohns Hopkins Medicine · USUniversity of Pittsburgh · US

Funding

PATHOPHYSIOLOGY OF MYOCARDIAL DISEASEST32HL007227 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI Chulan Kwon, WENDY S POST · 1985 to 2026
$21.2M
Sleep Related Mechanisms of COPD ProgressionP50HL084945 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI BROWN, ROBERT H · 2007 to 2011
$15.1M
Sleep Apnea and Dysregulation of Lipid MetabolismR01HL080105 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI POLOTSKY, VSEVOLOD Y · 2005 to 2014
$3.4M
Arginase and the Aging Cardiovascular SystemR01AG021523 · NIA · JOHNS HOPKINS UNIVERSITY · PI BERKOWITZ, DAN E · 2003 to 2008
$2.2M
Sleep Apnea Links Obesity to Cardiovascular DysfunctionR01HL077785 · NHLBI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI O'DONNELL, CHRISTOPHER P · 2006 to 2010
$1.9M
Leptin Signaling in Cardiac HypertrophyK08HL076220 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI BAROUCH, LILI A · 2004 to 2008
$666k
NHLBI NIH HHS 5P50HL084945NHLBI NIH HHS 5T32-HL007227NHLBI NIH HHS K08-HL076220NHLBI NIH HHS R01-HL077785NHLBI NIH HHS R01-HL80105NIA NIH HHS R01-AG021523
6 · The paper itself

Abstract

Chronic intermittent hypoxia (IH) during sleep can result from obstructive sleep apnea (OSA), a disorder that is particularly prevalent in obesity. OSA is associated with high levels of circulating leptin, cardiovascular dysfunction, and dyslipidemia. Relationships between leptin and cardiovascular function in OSA and chronic IH are poorly understood. We exposed lean wild-type (WT) and obese leptin-deficient ob/ob mice to IH for 4 wk, with and without leptin infusion, and measured cardiovascular indices including aortic vascular stiffness, endothelial function, cardiac myocyte morphology, and contractile properties. At baseline, ob/ob mice had decreased vascular compliance and endothelial function vs. WT mice. We found that 4 wk of IH decreased vascular compliance and endothelial relaxation responses to acetylcholine in both WT and leptin-deficient ob/ob animals. Recombinant leptin infusion in both strains restored IH-induced vascular abnormalities toward normoxic WT levels. Cardiac myocyte morphology and function were unaltered by IH. Serum cholesterol and triglyceride levels were significantly decreased by leptin treatment in IH mice, as was hepatic stearoyl-Coenzyme A desaturase 1 expression. Taken together, these data suggest that restoring normal leptin signaling can reduce vascular stiffness, increase endothelial relaxation, and correct dyslipidemia associated with IH.

Indexed as

AcetylcholineAnimalsChronic DiseaseHyperlipidemiasHypoxiaLeptinLipidsLiverMaleMiceMice, Inbred C57BLMice, ObeseMyocytes, CardiacSignal TransductionStearoyl-CoA DesaturaseVascular ResistanceAcetylcholineLeptinLipidsScd1 protein, mouseStearoyl-CoA Desaturase

Identifiers

PMID21278136
PMCPMC3075029
OpenAlexW2128206941

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.