Evidence map›Paper›PMID 18544708›Full record

ArticleDiabetes2008

Intracerebroventricular administration of neuropeptide Y induces hepatic insulin resistance via sympathetic innervation.

Anita M van den Hoek, Caroline van Heijningen, Janny P Schröder-van der Elst, D Margriet Ouwens, Louis M Havekes, Johannes A Romijn, Andries Kalsbeek, Hanno Pijl

Open access · hybridAbstract read
In one paragraph

Article in Diabetes, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed
3.1field-weighted citation impact, top 8% 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

58 citing papers in PubMed, 132 citations in OpenAlex.

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  5. Brain-Body Communication in Glucose Metabolism.Advances in experimental medicine and biology · 2025
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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

8 authors at 2 institutions in 1 country.

Anita M van den HoekTNO-Quality of Life, Gaubius Laboratory, Leiden, the Netherlands. a.vandenhoek@tno.nl
Caroline van Heijningen
Janny P Schröder-van der Elst
D Margriet Ouwens
Louis M Havekes
Johannes A Romijn
Andries Kalsbeek
Hanno Pijl
Leiden University Medical Center · NLNetherlands Institute for Neuroscience · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveWe recently showed that intracerebroventricular infusion of neuropeptide Y (NPY) hampers inhibition of endogenous glucose production (EGP) by insulin in mice. The downstream mechanisms responsible for these effects of NPY remain to be elucidated. Therefore, the aim of this study was to establish whether intracerebroventricular NPY administration modulates the suppressive action of insulin on EGP via hepatic sympathetic or parasympathetic innervation. RESEARCH DESIGN AND

methodsThe effects of a continuous intracerebroventricular infusion of NPY on glucose turnover were determined in rats during a hyperinsulinemic-euglycemic clamp. Either rats were sham operated, or the liver was sympathetically (hepatic sympathectomy) or parasympathetically (hepatic parasympathectomy) denervated.

resultsSympathectomy or parasympathectomy did not affect the capacity of insulin to suppress EGP in intracerebroventricular vehicle-infused animals (50 +/- 8 vs. 49 +/- 6 vs. 55 +/- 6%, in hepatic sympathectomy vs. hepatic parasympathectomy vs. sham, respectively). Intracerebroventricular infusion of NPY significantly hampered the suppression of EGP by insulin in sham-denervated animals (29 +/- 9 vs. 55 +/- 6% for NPY/sham vs. vehicle/sham, respectively, P = 0.038). Selective sympathetic denervation of the liver completely blocked the effect of intracerebroventricular NPY administration on insulin action to suppress EGP (NPY/hepatic sympathectomy, 57 +/- 7%), whereas selective parasympathetic denervation had no effect (NPY/hepatic parasympathectomy, 29 +/- 7%).

conclusionsIntracerebroventricular administration of NPY acutely induces insulin resistance of EGP via activation of sympathetic output to the liver.

Indexed as

AnimalsBlood GlucoseGlucose Clamp TechniqueHyperinsulinismHypoglycemic AgentsInjections, IntraventricularInsulinInsulin ResistanceLiverMaleNeuropeptide YParasympathectomyRatsRats, WistarSympathectomySympathetic Nervous SystemBlood GlucoseHypoglycemic AgentsInsulinNeuropeptide Y

Identifiers

PMID18544708
PMCPMC2518481
OpenAlexW2126796697

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.