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• W2938377404 abstract "Synaptic damage precedes neuron death in Alzheimer’s disease (AD). Neurexins, NRXN1, NRXN2, and NRXN3, are presynaptic adhesion molecules that specify neuron synapses and regulate neurotransmitter release. Neurexins and postsynaptic neuroligins interact with amyloid beta oligomer (AβO) deposits in damaged synapses. NRXN3 gene variants have been associated with autism, addiction, and schizophrenia, however, not fully investigated in Alzheimer’s disease. In the present study, we investigated an AD association of a 3′-splicing allele of rs8019381 that produces altered expression of transmembrane or soluble NRXN3 isoforms. We carried out RT-PCR (reverse transcription polymerase chain reaction), PCR-RFLP (PCR and restriction fragment length polymorphism), Sanger sequencing, and in situ hybridization (ISH) assays for NRXN3 neuron expression and genotyping. Genetic associations were analyzed by χ2 tests, and ISH signals were analyzed by FISH v1.0 module of Indica Labs HALO software. We previously identified a functional haplotype in the 3′ region of neurexin 3 (NRXN3) gene that alters the expression ratios between NRXN3 transmembrane and soluble isoforms. In this study, we found that expression and ratio of transmembrane and soluble NRXN3 isoforms were reduced in AD postmortem brains and inversely correlated with inflammasome component NLRP3 in AD brain regions. The splicing haplotype related to the transmembrane and soluble NRXN3 expression was associated with AD samples with P = 6.3 × 10−5 (odds ratio = 2.48) and interacted with APOE genotypes. We found that the SNP rs8019381 of NRXN3 that is located adjacent to splicing site #5 (SS#5) interacts with the APOE ε4 haplotype and alters NRXN3 transmembrane or soluble isoform expression in AD postmortem cortex. Dysregulation of presynaptic NRXN3 expression and splicing might increase neuron inflammation in AD brain." @default.
• W2938377404 created "2019-04-25" @default.
• W2938377404 creator A5000355544 @default.
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• W2938377404 creator A5022384896 @default.
• W2938377404 creator A5048570234 @default.
• W2938377404 creator A5077200969 @default.
• W2938377404 date "2019-03-21" @default.
• W2938377404 modified "2023-09-25" @default.
• W2938377404 title "Neurexin 3 transmembrane and soluble isoform expression and splicing haplotype are associated with neuron inflammasome and Alzheimer’s disease" @default.
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• W2938377404 doi "https://doi.org/10.1186/s13195-019-0475-2" @default.
• W2938377404 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6503427" @default.
• W2938377404 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/31060630" @default.
• W2938377404 hasPublicationYear "2019" @default.
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