Cited by 86Schizophrenia research and treatmentCancer, Lipids, and MetabolismCholesterol and Lipid Metabolism

A Potential Mechanism Underlying Atypical Antipsychotics-Induced Lipid Disturbances

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Cai, H L, Tan, Q Y, Jiang, P, Dang, R L, Xue, Y, Tang, M M, Xu, P, Deng, Y +2 more·2015·Translational Psychiatry

Abstract

Previous findings suggested that a four-protein complex, including sterol-regulatory element-binding protein (SREBP), SREBP-cleavage-activating protein (SCAP), insulin-induced gene (INSIG) and progesterone receptor membrane component 1 (PGRMC1), within the endoplasmic reticulum appears to be an important regulator responsible for atypical antipsychotic drug (AAPD)-induced lipid disturbances. In the present study, effects of typical antipsychotic drug and AAPDs as well as treatment outcome of steroid antagonist mifepristone (MIF) on the PGRMC1/INSIG/SCAP/SREBP pathway were investigated in rat liver using real-time quantitative polymerase chain reaction (qPCR) and western blot analysis. In addition, serum triacylglycerol, total cholesterol, free fatty acids and various hormones including progesterone, corticosterone and insulin were measured simultaneously. Following treatment with clozapine or risperidone, both lipogenesis and cholesterogenesis were enhanced via inhibition of PGRMC1/INSIG-2 and activation of SCAP/SREBP expressions. Such metabolic disturbances, however, were not demonstrated in rats treated with aripiprazole (ARI) or haloperidol (HAL). Moreover, the add-on treatment of MIF was effective in reversing the AAPD-induced lipid disturbances by upregulating the expression of PGRMC1/INSIG-2 and subsequent downregulation of SCAP/SREBP. Taken together, our findings suggest that disturbances in lipid metabolism can occur at an early stage of AAPD treatment before the presence of weight gain. Such metabolic defects can be modified by an add-on treatment of steroid antagonist MIF enhancing the PGRMC1 pathway. Thus, it is likely that PGRMC1/INSIG-2 signaling may be a therapeutic target for AAPD-induced weight gain.

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Authors
Cai, H. L., Tan, Q. Y., Jiang, P., Dang, R. L., Xue, Y., Tang, M. M., Xu, P., Deng, Y., Li, H. D., & Yao, J. K.
Affiliations
  • Central South University (CN)
  • Guilin Medical University (CN)
  • University of Pittsburgh (US)
Corresponding author
  • Li, H D
  • Yao, J K
Venue
Translational Psychiatry
Published
2015-10-20
Volume
5
Issue
10
Pages
e661-e661
ISSN
2158-3188 (ISSN-L)
OpenAlex
W2198099582
Cited by
86
References
49
Citations by year
2026: 6 · 2025: 8 · 2024: 8 · 2023: 12 · 2022: 7 · 2021: 14 · 2020: 6 · 2019: 4 · 2018: 5 · 2017: 15 · 2016: 1
FWCI
5.68
Type
journal article
Language
en
Open access
Locations
  • Translational Psychiatry (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • U.S. Department of Veterans Affairs
  • Office of Research and Development
  • National Natural Science Foundation of China (NSFC81401113)
  • VA Pittsburgh Healthcare System
  • Specialized Research Fund for the Doctoral Program of Higher Education of China
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Lipids, and Metabolism
  • Health Sciences › Medicine › Surgery › Cholesterol and Lipid Metabolism
Keywords
atypical antipsychotics, PGRMC1, INSIG2, SREBP, SCAP, endoplasmic reticulum, mifepristone, clozapine, risperidone, aripiprazole, haloperidol, lipogenesis, cholesterogenesis, lipid metabolism, antipsychotic-induced weight gain
MeSH terms
Animals, Cholesterol, Clozapine, Corticosterone, Disease Models, Animal, Fatty Acids, Nonesterified, Insulin, Liver, Male, Progesterone, Antipsychotic Agents, Triglycerides, Blotting, Western, Signal Transduction, Polymerase Chain Reaction, Rats, Sprague-Dawley, Risperidone, Lipogenesis, Lipid Metabolism, Rats

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