Evidence map›Paper›PMID 22585210›Full record

ArticlePflugers Archiv : European journal of physiology2012

Central leptin replacement enhances chemorespiratory responses in leptin-deficient mice independent of changes in body weight.

Mirian Bassi, Humberto Giusti, Cristiane Mota Leite, Janete A Anselmo-Franci, Jussara M do Carmo, Alexandre A da Silva, John E Hall, Eduardo Colombari, Mogens L Glass

Open access · greenAbstract read
In one paragraph

Article in Pflugers Archiv : European journal of physiology, 2012. 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
0.9field-weighted citation impact, top 30% 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, 40 citations in OpenAlex.

  1. Review
  2. Review
  3. Leptin alleviates obesity hypoventilationbioRxiv : the preprint server for biology · 2026
    Article
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  6. Revisiting the Role of Serotonin in Sleep-Disordered Breathing.International journal of molecular sciences · 2024
    Review
  7. Article
  8. Article
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  10. Review
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  15. Review
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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

9 authors at 4 institutions in 2 countries.

Mirian BassiDepartment of Physiology and Pathology, School of Dentistry, São Paulo State University, UNESP, 1680 Humaita St. Araraquara, São Paulo, Brazil. mbassi@foar.unesp.br
Humberto Giusti
Cristiane Mota Leite
Janete A Anselmo-Franci
Jussara M do Carmo
Alexandre A da Silva
John E Hall
Eduardo Colombari
Mogens L Glass
Universidade de São Paulo · BRUniversidade Estadual Paulista (Unesp) · BRUniversity of Mississippi Medical Center · USJackson Memorial Hospital · US

Funding

STRUCTURAL VASCULAR ADAPTATION OF THE MICROCIRCULATIONP01HL051971 · NHLBI · UNIVERSITY OF MISSISSIPPI MEDICAL CENTER · PI HALL, JOHN E · 1993 to 2018
$39.4M
NHLBI NIH HHS P01 HL051971NHLBI NIH HHS P01HL51971
6 · The paper itself

Abstract

Previous studies showed that leptin-deficient (ob/ob) mice develop obesity and impaired ventilatory responses to CO(2) (V(E) - CO(2)). In this study, we examined if leptin replacement improves chemorespiratory responses to hypercapnia (7 % CO(2)) in ob/ob mice and if these effects were due to changes in body weight or to the direct effects of leptin in the central nervous system (CNS). V(E) - CO(2) was measured via plethysmography in obese leptin-deficient- (ob/ob) and wild-type- (WT) mice before and after leptin (10 μg/2 μl day) or vehicle (phosphate buffer solution) were microinjected into the fourth ventricle for four consecutive days. Although baseline V(E) was similar between groups, obese ob/ob mice exhibited attenuated V(E) - CO(2) compared to WT mice (134 ± 9 versus 196 ± 10 ml min(-1)). Fourth ventricle leptin treatment in obese ob/ob mice significantly improved V(E) - CO(2) (from 131 ± 15 to 197 ± 10 ml min(-1)) by increasing tidal volume (from 0.38 ± 0.03 to 0.55 ± 0.02 ml, vehicle and leptin, respectively). Subcutaneous leptin administration at the same dose administered centrally did not change V(E) - CO(2) in ob/ob mice. Central leptin treatment in WT had no effect on V(E) - CO(2). Since the fourth ventricle leptin treatment decreased body weight in ob/ob mice, we also examined V(E) - CO(2) in lean pair-weighted ob/ob mice and found it to be impaired compared to WT mice. Thus, leptin deficiency, rather than obesity, is the main cause of impaired V(E) - CO(2) in ob/ob mice and leptin appears to play an important role in regulating chemorespiratory response by its direct actions on the CNS.

Indexed as

AnimalsBrain StemCarbon DioxideHomozygoteHypercapniaInjections, IntraventricularLeptinMaleMiceMice, Inbred C57BLMice, ObeseObesityPulmonary VentilationCarbon DioxideLeptin

Identifiers

PMID22585210
PMCPMC4077668
OpenAlexW2121351994

What OpenQuestion holds

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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.