Evidence map›Paper›PMID 29083297›Full record

ArticleJournal of psychiatry & neuroscience : JPN2017

In male rats, the ability of central insulin to suppress glucose production is impaired by olanzapine, whereas glucose uptake is left intact.

Chantel Kowalchuk, Celine Teo, Virginia Wilson, Araba Chintoh, Loretta Lam, Sri Mahavir Agarwal, Adria Giacca, Gary J Remington, Margaret K Hahn

Open access · bronzeAbstract read
In one paragraph

Article in Journal of psychiatry & neuroscience : JPN, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.5field-weighted citation impact, top 11% 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

21 citing papers in PubMed, 36 citations in OpenAlex.

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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 2 institutions in 1 country.

Chantel KowalchukFrom the Centre for Addiction and Mental Health, Toronto, Ont., Canada (Kowalchuk, Teo, Wilson, Chintoh, Agarwal, Remington, Hahn); the Institute of Medical Sciences, University of Toronto, Toronto, Ont., Canada (Kowalchuk, Giacca, Remington, Hahn); the Department of Psychiatry, University of Toronto, Toronto, Ont., Canada (Chintoh, Remington, Hahn); and the Department of Physiology, University of Toronto, Toronto, Ont., Canada (Lam, Giacca).
Celine TeoFrom the Centre for Addiction and Mental Health, Toronto, Ont., Canada (Kowalchuk, Teo, Wilson, Chintoh, Agarwal, Remington, Hahn); the Institute of Medical Sciences, University of Toronto, Toronto, Ont., Canada (Kowalchuk, Giacca, Remington, Hahn); the Department of Psychiatry, University of Toronto, Toronto, Ont., Canada (Chintoh, Remington, Hahn); and the Department of Physiology, University of Toronto, Toronto, Ont., Canada (Lam, Giacca).
Virginia WilsonFrom the Centre for Addiction and Mental Health, Toronto, Ont., Canada (Kowalchuk, Teo, Wilson, Chintoh, Agarwal, Remington, Hahn); the Institute of Medical Sciences, University of Toronto, Toronto, Ont., Canada (Kowalchuk, Giacca, Remington, Hahn); the Department of Psychiatry, University of Toronto, Toronto, Ont., Canada (Chintoh, Remington, Hahn); and the Department of Physiology, University of Toronto, Toronto, Ont., Canada (Lam, Giacca).
Araba ChintohFrom the Centre for Addiction and Mental Health, Toronto, Ont., Canada (Kowalchuk, Teo, Wilson, Chintoh, Agarwal, Remington, Hahn); the Institute of Medical Sciences, University of Toronto, Toronto, Ont., Canada (Kowalchuk, Giacca, Remington, Hahn); the Department of Psychiatry, University of Toronto, Toronto, Ont., Canada (Chintoh, Remington, Hahn); and the Department of Physiology, University of Toronto, Toronto, Ont., Canada (Lam, Giacca).
Loretta LamFrom the Centre for Addiction and Mental Health, Toronto, Ont., Canada (Kowalchuk, Teo, Wilson, Chintoh, Agarwal, Remington, Hahn); the Institute of Medical Sciences, University of Toronto, Toronto, Ont., Canada (Kowalchuk, Giacca, Remington, Hahn); the Department of Psychiatry, University of Toronto, Toronto, Ont., Canada (Chintoh, Remington, Hahn); and the Department of Physiology, University of Toronto, Toronto, Ont., Canada (Lam, Giacca).
Sri Mahavir AgarwalFrom the Centre for Addiction and Mental Health, Toronto, Ont., Canada (Kowalchuk, Teo, Wilson, Chintoh, Agarwal, Remington, Hahn); the Institute of Medical Sciences, University of Toronto, Toronto, Ont., Canada (Kowalchuk, Giacca, Remington, Hahn); the Department of Psychiatry, University of Toronto, Toronto, Ont., Canada (Chintoh, Remington, Hahn); and the Department of Physiology, University of Toronto, Toronto, Ont., Canada (Lam, Giacca).
Adria GiaccaFrom the Centre for Addiction and Mental Health, Toronto, Ont., Canada (Kowalchuk, Teo, Wilson, Chintoh, Agarwal, Remington, Hahn); the Institute of Medical Sciences, University of Toronto, Toronto, Ont., Canada (Kowalchuk, Giacca, Remington, Hahn); the Department of Psychiatry, University of Toronto, Toronto, Ont., Canada (Chintoh, Remington, Hahn); and the Department of Physiology, University of Toronto, Toronto, Ont., Canada (Lam, Giacca).
Gary J RemingtonFrom the Centre for Addiction and Mental Health, Toronto, Ont., Canada (Kowalchuk, Teo, Wilson, Chintoh, Agarwal, Remington, Hahn); the Institute of Medical Sciences, University of Toronto, Toronto, Ont., Canada (Kowalchuk, Giacca, Remington, Hahn); the Department of Psychiatry, University of Toronto, Toronto, Ont., Canada (Chintoh, Remington, Hahn); and the Department of Physiology, University of Toronto, Toronto, Ont., Canada (Lam, Giacca).
Margaret K HahnFrom the Centre for Addiction and Mental Health, Toronto, Ont., Canada (Kowalchuk, Teo, Wilson, Chintoh, Agarwal, Remington, Hahn); the Institute of Medical Sciences, University of Toronto, Toronto, Ont., Canada (Kowalchuk, Giacca, Remington, Hahn); the Department of Psychiatry, University of Toronto, Toronto, Ont., Canada (Chintoh, Remington, Hahn); and the Department of Physiology, University of Toronto, Toronto, Ont., Canada (Lam, Giacca).
University of Toronto · CACentre for Addiction and Mental Health · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundInsulin receptors are widely expressed in the brain and may represent a crossroad between metabolic and cognitive disorders. Although antipsychotics, such as olanzapine, are the cornerstone treatment for schizophrenia, they are associated with high rates of type 2 diabetes and lack efficacy for illness-related cognitive deficits. Historically, this risk of diabetes was attributed to the weight gain propensity of antipsychotics, but recent work suggests antipsychotics can have weight-independent diabetogenic effects involving unknown brain-mediated mechanisms. Here, we examined whether antipsychotics disrupt central insulin action, hypothesizing that olanzapine would impair the well-established ability of central insulin to supress hepatic glucose production.

methodsPancreatic euglycemic clamps were used to measure glucose kinetics alongside a central infusion of insulin or vehicle into the third ventricle. Male rats were pretreated with olanzapine or vehicle per our established model of acute olanzapine-induced peripheral insulin resistance. Groups included (central-peripheral) vehicle-vehicle (

resultsThere were no differences in peripheral glucose or insulin levels. Unexpectedly, we showed that central insulin increased glucose uptake, and this effect was not perturbed by olanzapine. We replicated suppression of glucose production by insulin (clamp relative to basal: 77.9% ± 13.1%, all LIMITATIONS: This study used only male rats and an acute dose of olanzapine.

conclusionTo our knowledge, this is the first study suggesting olanzapine may impair central insulin sensing, elucidating a potential mechanism of antipsychotic-induced diabetes and opening avenues of investigation related to domains of schizophrenia psychopathology.

Indexed as

AnimalsAntipsychotic AgentsBenzodiazepinesBrainCatheters, IndwellingGlucoseInfusions, IntraventricularInsulinInsulin ResistanceMaleOlanzapineRats, Sprague-DawleySubcutaneous AbsorptionAntipsychotic AgentsBenzodiazepinesGlucoseInsulinOlanzapine

Identifiers

PMID29083297
PMCPMC5662464
OpenAlexW2766496673

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.