Evidence map›Paper›PMID 33198886›Full record

ArticleeLife2020

Antipsychotic olanzapine-induced misfolding of proinsulin in the endoplasmic reticulum accounts for atypical development of diabetes.

Satoshi Ninagawa, Seiichiro Tada, Masaki Okumura, Kenta Inoguchi, Misaki Kinoshita, Shingo Kanemura, Koshi Imami, Hajime Umezawa, Tokiro Ishikawa, Robert B Mackin and 6 more

Open access · goldAbstract read
In one paragraph

Article in eLife, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
4.5field-weighted citation impact, top 4% 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, 1 synthesis or guideline pooled it, 38 citations in OpenAlex.

  1. Pooled it
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  5. CaNature cell 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

16 authors at 4 institutions in 2 countries.

Satoshi NinagawaDepartment of Biophysics, Graduate School of Science, Kyoto University, Kyoto, Japan.ORCID 0000-0002-8005-4716
Seiichiro Tada *Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.ORCID 0000-0001-8734-2270
Masaki Okumura *Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai, Japan.ORCID 0000-0001-8130-2470
Kenta Inoguchi *Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.ORCID 0000-0003-0470-4251
Misaki KinoshitaFrontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai, Japan.ORCID 0000-0001-5099-7572
Shingo KanemuraFrontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai, Japan.ORCID 0000-0002-7012-8179
Koshi ImamiDepartment of Molecular and Cellular BioAnalysis, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan.ORCID 0000-0002-7451-4982
Hajime UmezawaDepartment of Biophysics, Graduate School of Science, Kyoto University, Kyoto, Japan.
Tokiro IshikawaDepartment of Biophysics, Graduate School of Science, Kyoto University, Kyoto, Japan.ORCID 0000-0003-1718-6764
Robert B MackinDepartment of Biomedical Sciences, Creighton University School of Medicine, Omaha, United States.ORCID 0000-0003-3297-9893
Seiji ToriiLaboratory of Secretion Biology, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Japan.ORCID 0000-0002-7388-0331
Yasushi IshihamaDepartment of Molecular and Cellular BioAnalysis, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan.ORCID 0000-0001-7714-203X
Kenji InabaInstitute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Japan.ORCID 0000-0001-8229-0467
Takayuki AnazawaDepartment of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.ORCID 0000-0002-7625-5750
Takahiko NagamineSunlight Brain Research Center, Yamaguchi, Japan.ORCID 0000-0002-0690-6271
Kazutoshi MoriDepartment of Biophysics, Graduate School of Science, Kyoto University, Kyoto, Japan.ORCID 0000-0001-7378-4019
Kyoto University · JPTohoku University · JPCreighton University · USGunma University · JP

Funding

Ministry of Education, Culture, Sports, Science and Technology 17H01432Ministry of Education, Culture, Sports, Science and Technology 17H06419Ministry of Education, Culture, Sports, Science and Technology 18K06216Ministry of Education, Culture, Sports, Science and Technology 19K06658
6 · The paper itself

Abstract

Second-generation antipsychotics are widely used to medicate patients with schizophrenia, but may cause metabolic side effects such as diabetes, which has been considered to result from obesity-associated insulin resistance. Olanzapine is particularly well known for this effect. However, clinical studies have suggested that olanzapine-induced hyperglycemia in certain patients cannot be explained by such a generalized mechanism. Here, we focused on the effects of olanzapine on insulin biosynthesis and secretion by mouse insulinoma MIN6 cells. Olanzapine reduced maturation of proinsulin, and thereby inhibited secretion of insulin; and specifically shifted the primary localization of proinsulin from insulin granules to the endoplasmic reticulum. This was due to olanzapine's impairment of proper disulfide bond formation in proinsulin, although direct targets of olanzapine remain undetermined. Olanzapine-induced proinsulin misfolding and subsequent decrease also occurred at the mouse level. This mechanism of olanzapine-induced β-cell dysfunction should be considered, together with weight gain, when patients are administered olanzapine.

Indexed as

AnimalsAntipsychotic AgentsCell Line, TumorDiabetes MellitusEndoplasmic ReticulumInsulinomaMaleMiceMice, Inbred BALB COlanzapineProinsulinProtein FoldingRisperidoneAntipsychotic AgentsOlanzapineProinsulinRisperidonecell biologydegradationdiabetesmisfoldingmouseproinsulin

Identifiers

PMID33198886
PMCPMC7671685
OpenAlexW3099944880

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.