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  1. Sasmita AO, Kuruvilla J, Ling APK
    Int J Neurosci, 2018 Nov;128(11):1061-1077.
    PMID: 29667473 DOI: 10.1080/00207454.2018.1466781
    Background and purpose: Neurological diseases and injuries to the nervous system may cause inadvertent damage to neuronal and synaptic structures. Such phenomenon would lead to the development of neurological and neurodegenerative disorders which might affect memory, cognition and motoric functions. The body has various negative feedback systems which can induce beneficial neuroplastic changes in mediating some neuronal damage; however, such efforts are often not enough to ameliorate the derogatory changes. Materials and methods: Articles discussing studies to induce beneficial neuroplastic changes were retrieved from the databases, National Center for Biotechnology Information (NCBI) and MEDLINE, and reviewed. Results: This review highlights the significance of neuroplasticity in restoring neuronal functions and current advances in research to employ this positive cellular event by inducing synaptogenesis, neurogenesis, clearance of toxic amyloid beta (Aβ) and tau protein aggregates, or by providing neuroprotection. Compounds ranging from natural products (e.g. bilobalides, curcumin) to novel vaccines (e.g. AADvac1, RG7345) have been reported to induce long-lasting neuroplasticity in vitro and in vitro. Activity-dependent neuroplasticity is also inducible by regimens of exercises and therapies with instances in human studies proving major successes. Lastly, mechanical stimulation of brain regions through therapeutic hypothermia or deep brain stimulation has given insight on the larger scale of neuroplasticity within the nervous system. Conclusion: Harnessing neuroplasticity may not only offer an arm in the vast arsenal of approaches being taken to tackle neurological disorders, such as neurodegenerative diseases, but from ample evidence, it also has major implications in neuropsychological disorders.
  2. Kuruvilla J, Sasmita AO, Ling APK
    Neurol Sci, 2018 Nov;39(11):1827-1835.
    PMID: 30076486 DOI: 10.1007/s10072-018-3521-0
    BACKGROUND AND PURPOSE: The central nervous system (CNS) faces unique difficulties in attaining permanent therapy for neurodegenerative disorder (ND). Genomic level forms of therapy have garnered interest in the recent decade, with the novel CRISPR/Cas9 gene editing tool continuing to be explored due to its efficiency, safety, and adaptability to varying conditions. With the aid of viral vectors as transport vectors, the gene editing tool has produced promising in vitro and in vivo findings in study models. Thus, this review focuses on the recent advancements and update of CRISPR/Cas9 to combat neurodegenerative diseases.

    METHODS: Articles detailing potential applications of CRISPR/Cas9 in neurodegenerative settings were retrieved from PubMed and Google Scholar with the keywords "CRISPR," "gene editing," and "neurodegenerative diseases." Relevant information was collected and critically reviewed.

    RESULTS: The utility of CRISPR/Cas9 coupled with viral transduction ranges from the disruption of amyloid precursor protein (APP) production at a genomic level in Alzheimer's disease (AD) to the deletion of varying exon portions of the Dmd gene in Duchenne muscular dystrophy (DMD) which would increase dystrophin expression. This usage of CRISPR/Cas9 also extends to experimentally ameliorate the neurodegenerative effects caused by viral infections.

    CONCLUSION: The CRISPR/Cas9 gene editing tool is a powerful arsenal in the field of gene therapy and molecular medicine; hence, more research should be called to focus on the ample potential this tool has to offer in the field of neurodegenerative diseases.

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