Early Detection Of Alzheimer's Disease With GlucoCEST MRI: A Feasibility Study.

Status: Recruiting
Location: See location...
Intervention Type: Other
Study Type: Observational
SUMMARY

Alzheimer's disease (AD) is the most common cause of dementia, affecting approximately 10% of individuals aged ≥ 65. Most available treatments aim at controlling symptoms at an early stage rather than providing a cure. Therefore, an accurate and early diagnosis of AD with appropriate management will slow the progression of the condition. Reduced cerebral glucose levels have been observed in patients with early AD. Glucose hypometabolism can be assessed by administering a radioactive glucose analogue, 2-deoxy-2-(18F) fluoro-D-glucose (18FDG), and imaging with PET (positron emission tomography). The high cost and limited availability of PET-CT (PET - computed tomography) still hamper its general clinical application. Moreover, the use of radioactive tracers in combination with the additional ionizing radiation of CT is not suitable for repeated measurements. Therefore, currently, the provisional diagnosis of AD is still based on the combination of clinical history, neurological examination, cognitive testing over a period of time, and structural neuroimaging. This has major time and resource implications. A radically different and highly innovative means for imaging glucose with magnetic resonance imaging (MRI) has now been established, exploiting the interaction between hydroxyl protons in glucose and the protons in water; the method is termed glucose Chemical Exchange Saturation Transfer (glucoCEST). GlucoCEST MRI is a method that has no reliance on radiolabelled glucose analogues and could become widely implemented in clinic practice. We therefore aim to investigate the potential of glucoCEST MRI in Alzheimer's disease.

Eligibility
Participation Requirements
Sex: All
Minimum Age: 18
Healthy Volunteers: t
View:

⁃ Development phase:

⁃ Controls (development group) must:

• be \> 18 years

• consent to the study

• not report problems with memory.

⁃ Clinical phase

⁃ Patients must:

• be ≥ 65 years,

• able to provide informed consent to the study

• have been clinically diagnosed with AD by the mental health team.

⁃ Controls must:

• be ≥ 65 years

• able to provide consent to the study

• have a normal score in the ADAS-cog test and the Mini Mental State Examination test (MMSE)

• not report problems with memory.

Locations
Other Locations
United Kingdom
University of Aberdeen
RECRUITING
Aberdeen
Contact Information
Primary
Gordon Waiter, PhD
g.waiter@abdn.ac.uk
+44 (0)1224 438356
Backup
Nicholas Senn de Vries, PhD
nicholas.senn2@abdn.ac.uk
+44 (0)1224 438352
Time Frame
Start Date: 2022-11-15
Estimated Completion Date: 2025-12-31
Participants
Target number of participants: 60
Treatments
Development Group 1 (N = 10) (Development Phase)
Development group participants (N = 10) will undergo 1 magnetic resonance imaging (MRI) sessions. Before and after their MRI scan participants will be given a pinprick blood sugar test.
Patients (N = 20) (Clinical Phase)
Patients (N = 20) will attend 2 visits up to 1 week apart. Patients will be asked to have a no-sugar diet and take no exercise for 24 hours before each visit and to avoid eating 6 hours before scan.~Visit 1: Patients will undergo a positron emission tomography (PET) assessment. Before and after their PET assessment patients will be given a pinprick blood sugar test. PET assessment:~Visit 2: Patients will undergo MRI assessment. Before and after their MRI scan patients will be given a pinprick blood sugar test. Healthy controls will complete cognitive assessments.
Healthy Controls (N = 20) (Clinical Phase)
Healthy controls (N = 20) will attend 2 visits up to 1 week apart. Healthy controls will be age matched (+/- 3 years) and sex matched to the patient group. Healthy controls will be asked to have a no-sugar diet and take no exercise for 24 hours before each visit and to avoid eating 6 hours before scan.~Visit 1: Healthy Controls will undergo a positron emission tomography (PET) assessment. Before and after their PET assessment patients will be given a pinprick blood sugar test. PET assessment:~Visit 2: Healthy Controls will undergo MRI assessment. Before and after their MRI scan patients will be given a pinprick blood sugar test. Healthy controls will complete cognitive assessments.
Development Group 2 (N = 10) (Development Phase)
To investigate the repeatability of MRI assessment, 10 development phase healthy volunteers will be recruited to undergo two repeated study assessments. The second visit will be between 7 and 14 days after their first visit. The second repeated study assessment will follow the same procedure as the first visit, consisting of blood glucose assessment and MRI assessment. Participants will be advised to fast from mid-night and avoid eating breakfast.
Related Therapeutic Areas
Sponsors
Leads: University of Aberdeen
Collaborators: NHS Grampian

This content was sourced from clinicaltrials.gov