Evidence map›Paper›PMID 33624805›Full record

ArticleSleep2021

Leptin receptor expression in the dorsomedial hypothalamus stimulates breathing during NREM sleep in db/db mice.

Huy Pho, Slava Berger, Carla Freire, Lenise J Kim, Mi-Kyung Shin, Stone R Streeter, Nishitha Hosamane, Meaghan E Cabassa, Frederick Anokye-Danso, Olga Dergacheva and 7 more

Abstract read
In one paragraph

Article in Sleep, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing 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

23 citing papers in PubMed.

  1. Article
  2. Article
  3. Leptin alleviates obesity hypoventilationbioRxiv : the preprint server for biology · 2026
    Article
  4. Review
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Maturational effect of leptin on COPediatric research · 2023
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Article
  20. Obstructive sleep apnea.Handbook of clinical neurology · 2022
    Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

17 authors.

Huy PhoDivision of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Slava BergerDivision of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Carla FreireDivision of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.ORCID 0000-0001-8118-5665
Lenise J KimDivision of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Mi-Kyung ShinDivision of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Stone R StreeterDivision of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Nishitha HosamaneDivision of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Meaghan E CabassaDivision of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Frederick Anokye-DansoDivision of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Olga DergachevaDepartment of Pharmacology and Physiology, George Washington University, Washington, DC, USA.ORCID 0000-0003-1136-9156
Mateus R AmorimDivision of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Thomaz Fleury-CuradoDivision of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Jonathan C JunDivision of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.ORCID 0000-0001-5788-3535
Alan R SchwartzDivision of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Rexford S AhimaDivision of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
David MendelowitzDepartment of Pharmacology and Physiology, George Washington University, Washington, DC, USA.
Vsevolod Y PolotskyDivision of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.

Funding

Research BaseP30DK072488 · NIDDK · UNIVERSITY OF MARYLAND BALTIMORE · PI MITCHELL, BRAXTON D, TAYLOR, SIMEON I. · 2005 to 2019
$17.3M
Melanocortin 4 signaling in the carotid body in obesityR01HL133100 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI Vsevolod Y Polotsky, Wan-yee Tang · 2016 to 2026
$7.1M
Treatment of Sleep Apnea by Targeting Leptin SignalingR01HL128970 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI MENDELOWITZ, DAVID, POLOTSKY, VSEVOLOD Y · 2015 to 2023
$5.4M
Chemogenetic approach to treat Obstructive Sleep ApneaR01HL138932 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI POLOTSKY, VSEVOLOD Y · 2017 to 2020
$2.4M
Intranasal Leptin as A Novel Treatment of Opioid-Induced Respiratory DepressionR61HL156240 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI POLOTSKY, VSEVOLOD Y · 2020 to 2020
$737k
NHLBI NIH HHS R01 HL128970NHLBI NIH HHS R01 HL133100NHLBI NIH HHS R01 HL138932NHLBI NIH HHS R61 HL156240NIDDK NIH HHS P30 DK072488
6 · The paper itself

Abstract

STUDY

objectivesObesity leads to obstructive sleep apnea (OSA), which is recurrent upper airway obstruction during sleep, and obesity hypoventilation syndrome (OHS), hypoventilation during sleep resulting in daytime hypercapnia. Impaired leptin signaling in the brain was implicated in both conditions, but mechanisms are unknown. We have previously shown that leptin stimulates breathing and treats OSA and OHS in leptin-deficient ob/ob mice and leptin-resistant diet-induced obese mice and that leptin's respiratory effects may occur in the dorsomedial hypothalamus (DMH). We hypothesized that leptin receptor LepRb-deficient db/db mice have obesity hypoventilation and that restoration of leptin signaling in the DMH will increase ventilation during sleep in these animals.

methodsWe measured arterial blood gas in unanesthetized awake db/db mice. We subsequently infected these animals with Ad-LepRb or control Ad-mCherry virus into the DMH and measured ventilation during sleep as well as CO2 production after intracerebroventricular (ICV) infusions of phosphate-buffered saline or leptin.

resultsAwake db/db mice had elevated CO2 levels in the arterial blood. Ad-LepRb infection resulted in LepRb expression in the DMH neurons in a similar fashion to wildtype mice. In LepRb-DMH db/db mice, ICV leptin shortened REM sleep and increased inspiratory flow, tidal volume, and minute ventilation during NREM sleep without any effect on the quality of NREM sleep or CO2 production. Leptin had no effect on upper airway obstruction in these animals.

conclusionLeptin stimulates breathing and treats obesity hypoventilation acting on LepRb-positive neurons in the DMH.

Indexed as

LeptinReceptors, LeptinAnimalsHypothalamusMiceMice, ObeseSleepLeptinleptin receptor, mouseReceptors, Leptindorsomedial hypothalamusleptinobesityobstructive sleep apnea

Identifiers

PMID33624805
PMCPMC8193564

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.