Cited by 30Genetics and Neurodevelopmental DisordersNeuroscience and Neuropharmacology ResearchAutism Spectrum Disorder Research

Lovastatin, Not Simvastatin, Corrects Core Phenotypes in the Fragile X Mouse Model

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Muscas, Melania, Louros, Susana R., Osterweil, Emily K.·2019·eneuro

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Abstract

The cholesterol-lowering drug lovastatin corrects neurological phenotypes in animal models of fragile X syndrome (FX), a commonly identified genetic cause of autism and intellectual disability (ID). The therapeutic efficacy of lovastatin is being tested in clinical trials for FX; however, the structurally similar drug simvastatin has been proposed as an alternative due to an increased potency and brain penetrance. Here, we perform a side-by-side comparison of the effects of lovastatin and simvastatin treatment on two core phenotypes in Fmr1 -/y mice versus WT littermates: excessive hippocampal protein synthesis and susceptibility to audiogenic seizures (AGSs). We find that simvastatin does not correct excessive hippocampal protein synthesis in the Fmr1 -/y hippocampus at any dose tested. In fact, simvastatin significantly increases protein synthesis in both Fmr1 -/y and WT. Moreover, injection of simvastatin does not reduce AGS in the Fmr1 -/y mouse, while lovastatin significantly reduces AGS incidence and severity versus vehicle-treated animals. These results show that unlike lovastatin, simvastatin does not correct core phenotypes in the Fmr1 -/y mouse model.

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Crossref · 10.1523/eneuro.0097-19.2019

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  • Pharmacological inhibition of the MVA pathway corrects excessive hippocampal protein synthesis and susceptibility to audiogenic seizures in FXS mice.

    “it has been demonstrated that the pharmacological inhibition of the MVA pathway corrects the excessive hippocampal protein synthesis and susceptibility to audiogenic seizures displayed by FXS mice, suggesting a potential role of the cholesterol biosynthetic pathway in this pathology [25].”

    From Brain Cholesterol Biosynthetic Pathway Is Altered in a Preclinical Model of Fragile X Syndrome (2022) · cites this paper as [25]

    The Results (no page available) show that lovastatin normalizes excessive hippocampal protein synthesis and reduces audiogenic seizure incidence in Fmr1-/y mice. But the same sections report that simvastatin does not correct either phenotype, so the source does not support the unqualified claim that pharmacological inhibition of the mevalonate pathway does so. The Discussion proposes an effect through ERK1/2 signaling rather than establishing inhibition of cholesterol biosynthesis as the corrective mechanism. (LLM, conf=0.88)

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  1. Jones P, Kafonek S, Laurora I, Hunninghake D (1998) Comparative dose efficacy study of atorvastatin versus simvastatin, pravastatin, lovastatin, and fluvastatin in patients with hypercholesterolemia (the CURVES study). Am J Cardiol 81: 582– 587. 9514454

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Authors
Muscas, M., Louros, S. R., & Osterweil, E. K.
Affiliations
Simons Initiative for the Developing Brain (GB)
Venue
eneuro
Published
2019-05
Volume
6
Issue
3
Pages
ENEURO.0097-19.2019
ISSN
2373-2822 (ISSN-L)
OpenAlex
W2951046587
Cited by
30
References
61
Citations by year
2026: 2 · 2025: 3 · 2024: 5 · 2023: 2 · 2022: 5 · 2021: 4 · 2020: 7 · 2019: 2
FWCI
2.71
Type
journal article
Language
en
Open access
Locations
  • eNeuro (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Edinburgh Research Explorer (University of Edinburgh) (submittedVersion, other-oa)
Funders
  • Wellcome Trust (Sir Henry Dale fellowship 104116/Z/14/Z)
  • Medical Research Council (MR/M006336/1)
  • Simons Initiative for the Developing Brain
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
Keywords
lovastatin, simvastatin, fragile X syndrome, Fmr1 knockout mice, audiogenic seizures, statins, autism spectrum disorder, intellectual disability, drug comparison
MeSH terms
Acoustic Stimulation, Animals, Anticholesteremic Agents, Disease Models, Animal, Fragile X Syndrome, Hippocampus, Lovastatin, Male, Mice, Inbred C57BL, Mice, Transgenic, Phenotype, Protein Biosynthesis, Simvastatin, Epilepsy, Reflex, MAP Kinase Signaling System

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