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Research on the Early and Prognosis Diagnosis of Vascular Dementia

NCT03152630 · Status: RECRUITING · Type: OBSERVATIONAL · Enrollment: 600

Last updated 2017-05-15

No results posted yet for this study

Summary

Around 10% of stroke survivors develop dementia within 3 months after stroke and over 20% more stroke patients have dementia in the subsequent 3 years. Previous studies documented a close relationship between stroke and Alzheimer's disease (AD). There are, however, no reliable biomarkers to detect cognitive dysfunction and dementia among stroke patients or to predict the risks of vascular dementia (VD) and AD among patients with stroke. There is a clear need to identify novel mediators of cognitive dysfunction in stroke patients to provide insights into the pathogenesis, to tailor clinical care based on risks, and to develop new therapeutic strategies.

While the expression of messenger RNAs (mRNAs) and microRNAs (miRNAs) account for only \~1% of all transcribed species, up to 90% of the mammalian genome is transcribed as long non-coding RNAs (lncRNAs), a heterogeneous group of non-coding transcripts longer than 200 nucleotides. LncRNAs have been shown to be functional and involved in specific physiological and pathological processes through epigenetic, transcriptional and post-transcriptional mechanisms. While the roles of lncRNAs in human diseases including cancer and neurodegenerative disorders are beginning to emerge, it remains unclear how lncRNA regulation contributes to cognitive dysfunction and dementia in stroke patients.

In this proposal, we seek to apply next-generation sequencing technology to investigate circulating lncRNA expression, as well as exosomal RNAs in the subjects with and without cognitive dysfunction or dementia. In addition, we will apply the near-infrared spectroscopy (NIRS) to evaluate cerebral blood flow, metabolism and oxygenation in these subjects. We will test the hypothesis that circulating lncRNA/exosomal RNA signature and NIRS imagaing can reflect the cognitive states in stroke patients. The accuracy, sensitivity and specificity of the lncRNA-exosomal RNA-NIRS-based cognitive dysfunction scoring system will then be tested in an independent, large validation cohort. Next, we propose to test the hypothesis that circulating lncRNAs/exosomal RNA and NIRS imaging can be novel prognostic biomarkers to predict cognitive dysfunction and dementia in stroke patients. These studies will also establish a set of novel, lncRNA-based diagnostic and prognostic biomarker in stroke patients to improve clinical preventive and therapeutic care.

Conditions

Sponsors & Collaborators

  • National Taiwan University Hospital

    lead OTHER

Principal Investigators

  • Chau C Wu, M.D., Ph.D. · National Taiwan University Hospital

Eligibility

Min Age
65 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2016-03-30
Primary Completion
2036-01-31
Completion
2036-01-31

Countries

  • Taiwan

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03152630 on ClinicalTrials.gov