Evidence map›Paper›PMID 24521430›Full record

ArticleActa physiologica (Oxford, England)2014

Leptin into the ventrolateral medulla facilitates chemorespiratory response in leptin-deficient (ob/ob) mice.

M Bassi, W I Furuya, J V Menani, D S A Colombari, J M do Carmo, A A da Silva, J E Hall, T S Moreira, I C Wenker, D K Mulkey and 1 more

Open access · greenAbstract read
In one paragraph

Article in Acta physiologica (Oxford, England), 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
1.5field-weighted citation impact, top 19% 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

30 citing papers in PubMed, 52 citations in OpenAlex.

  1. Leptin alleviates obesity hypoventilationbioRxiv : the preprint server for biology · 2026
    Article
  2. Leptin antagonism improves Rett syndrome phenotype in symptomatic Mecp2-deficient mice.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2026
    Article
  3. Article
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  5. Review
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  8. Obstructive sleep apnea.Handbook of clinical neurology · 2022
    Review
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  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Review
  16. Obesity-associated asthma in childhood.Allergologie select · 2020
    Article
  17. Article
  18. Intranasal Leptin Relieves Sleep-disordered Breathing in Mice with Diet-induced Obesity.American journal of respiratory and critical care medicine · 2019
    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

11 authors at 5 institutions in 2 countries.

M BassiDepartment of Physiology and Pathology, School of Dentistry, São Paulo State University (UNESP), Araraquara, SP, Brazil.
W I Furuya
J V Menani
D S A Colombari
J M do Carmo
A A da Silva
J E Hall
T S Moreira
I C Wenker
D K Mulkey
E Colombari
Universidade Estadual Paulista (Unesp) · BRJackson Memorial Hospital · USUniversity of Connecticut · USUniversidade de São Paulo · BRUniversity of Mississippi Medical Center · US

Funding

STRUCTURAL VASCULAR ADAPTATION OF THE MICROCIRCULATIONP01HL051971 · NHLBI · UNIVERSITY OF MISSISSIPPI MEDICAL CENTER · PI HESTER, ROBERT L · 1993 to 2018
$39.4M
The role of leptin in autoimmune-associated hypertensionP20GM104357 · NIGMS · UNIVERSITY OF MISSISSIPPI MED CTR · PI TAYLOR, ERIN BASSFORD · 2013 to 2022
$23.4M
Glial chemosensitivity: pH sensing and interactions with neuronal chemoreceptorsR01HL104101 · NHLBI · UNIVERSITY OF CONNECTICUT STORRS · PI MULKEY, DANIEL K, OLSEN, MICHELLE L · 2010 to 2024
$5.5M
NHLBI NIH HHS HL104101NHLBI NIH HHS P01 HL051971NHLBI NIH HHS P01 HL 51971NHLBI NIH HHS R01 HL104101NIGMS NIH HHS P20 GM104357
6 · The paper itself

Abstract

aimLeptin, an adipocyte-derived hormone, is suggested to participate in the central control of breathing. We hypothesized that leptin may facilitate ventilatory responses to chemoreflex activation by acting on respiratory nuclei of the ventrolateral medulla. The baseline ventilation and the ventilatory responses to CO2 were evaluated before and after daily injections of leptin into the retrotrapezoid nucleus/parafacial respiratory group (RTN/pFRG) for 3 days in obese leptin-deficient (ob/ob) mice.

methodsMale ob/ob mice (40-45 g, n = 7 per group) received daily microinjections of vehicle or leptin (1 μg per 100 nL) for 3 days into the RTN/pFRG. Respiratory responses to CO2 were measured by whole-body plethysmography.

resultsUnilateral microinjection of leptin into the RTN/pFRG in ob/ob mice increased baseline ventilation (VE ) from 1447 ± 96 to 2405 ± 174 mL min(-1) kg(-1) by increasing tidal volume (VT ) from 6.4 ± 0.4 to 9.1 ± 0.8 mL kg(-1) (P < 0.05). Leptin also enhanced ventilatory responses to 7% CO2 (Δ = 2172 ± 218 mL min(-1) kg(-1) , vs. control: Δ = 1255 ± 105 mL min(-1) kg(-1) ), which was also due to increased VT (Δ = 4.71 ± 0.51 mL kg(-1) , vs. control: Δ = 2.27 ± 0.20 mL kg(-1) ), without changes in respiratory frequency. Leptin treatment into the RTN/pFRG or into the surrounding areas decreased food intake (83 and 70%, respectively), without significantly changing body weight.

conclusionThe present results suggest that leptin acting in the respiratory nuclei of the ventrolateral medulla improves baseline VE and VT and facilitates respiratory responses to hypercapnia in ob/ob mice.

Indexed as

AnimalsEatingLeptinMaleMedulla OblongataMiceMice, ObeseObesityRespiratory MechanicsTidal VolumeLeptinbreathingcentral chemoreceptionleptinobesityventrolateral medulla

Identifiers

PMID24521430
PMCPMC4365783
OpenAlexW2121292496

What OpenQuestion holds

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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.