Alzheimer Disease Clinical Trial
Official title:
Transcranial Alternating Current Stimulation Combined With 40Hz Sound Stimulation for Treatment of Mild to Moderate Alzheimer's Disease
Alzheimer's disease is characterized by progressive cognitive decline, and cognition is associated with cerebral concussion. Previous studies have found reduced gamma energy in the brain of AD patients. Therefore, modulation of gamma activity in AD patients may help improve cognitive function. The purpose of this study was to investigate the safety and tolerability of transcranial alternating current stimulation (tACS) combined with 40Hz sound stimulation in patients with mild to moderate Alzheimer's disease (AD); to compare the effects of tACS combined with sound stimulation, tACS, and 40Hz sound stimulation on cognition in AD patients; and the effects of tACS combined with sound stimulation, tACS, and 40Hz sound stimulation on brain network connectivity in AD patients before and after tACS.
Status | Recruiting |
Enrollment | 60 |
Est. completion date | January 2023 |
Est. primary completion date | January 2023 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 40 Years to 80 Years |
Eligibility | Inclusion Criteria: 1. Age 40-80 years, male or female; 2. Meet the diagnosis AD formulated by the National Institute on Aging and the Alzheimer's Association (NIA-AA) dementia diagnostic criteria; 3. Clinical Dementia Rating Scale (CDR) =1.0 or 2.0; 4. MMSE score = 24; 5. Able to move freely or with the aid of a walker or crutches; 6. Good vision and hearing, able to cooperate with examination and treatment; 7. Subjects voluntarily joined and had a guardian to sign the informed consent. Exclusion Criteria: 1. The presence of preoperative structural brain abnormalities (such as tumors, cerebral infarction, hydrocephalus or intracranial hemorrhage); 2. The presence of other neurological disorders such as multiple sclerosis, epilepsy, Parkinson's disease, etc; 3. Psychiatric system disorders: such as anxiety disorders, affective disorders such as depression, or pharmacogenic psychiatric disorders; 4. Severe medical illness, current use of respiratory medications, cardiovascular medications, anticonvulsants or psychoactive drugs and clinically significant gastrointestinal, renal, hepatic, respiratory, infectious, endocrine or cardiovascular disease, cancer, alcoholism or drug addiction; 5. Severe hearing and visual impairment; 6. Patients with clinical comorbidities with a life expectancy of less than 2 years; 7. Patients who have undergone cranial surgery; 8. Contraindications to undergoing magnetic resonance imaging or receiving transcranial alternating current stimulation (pacemakers, post DBS surgery); 9. Eczema or sensitive skin; 10. Familial Alzheimer's disease; 11. Presence of other types of dementia: vascular dementia, Lewy body dementia, frontotemporal dementia, infectious dementia, etc; 12. Other conditions that, in the opinion of the investigator, may not be suitable for this study. |
Country | Name | City | State |
---|---|---|---|
China | Chinese PLA General Hospital | Beijing |
Lead Sponsor | Collaborator |
---|---|
Chinese PLA General Hospital |
China,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Change in Alzheimer's Disease Assessment Scale cognitive subscale scores | ADAS-cog 11 scale ranges from 0 to 70, and higher value represents a worse outcome. This study will use ADAS-cog to assess changes in the global cognitive function after intervention. | up to 21 days (end of intervention) ,3 months | |
Secondary | Change in Montreal Cognitive Assessment scores | Montreal Cognitive Assessment (MoCA) will be used to evaluate the general cognitive function. MoCA ranges from 0 to 30, and higher value represents a better outcome. | up to 21 days (end of intervention) ,3 months | |
Secondary | Change in Mini-mental State Examination scores | Mini-mental State Examination (MMSE) will be used to evaluate the general cognitive function. MMSE ranges from 0 to 30, and higher value represents a better outcome. | up to 21 days (end of intervention) ,3 months | |
Secondary | Change in Clinical Dementia Rating scores | Clinical Dementia Rating(CDR) will be used to evaluate the level of dementia in AD patients. Mild dementia CDR: 1.0; Moderate dementia CDR: 2.0; Severe dementia CDR: 3.0. | up to 21 days (end of intervention) ,3 months | |
Secondary | Change in Auditory Verbal Learning Test scores | auditory verbal learning test(AVLT)will be used to evaluate the memory function. AVLT ranges from 0 to 36, and higher values representing better outcome. | up to 21 days (end of intervention) ,3 months | |
Secondary | Change in Boston Naming Test scores | Boston Naming Test(BNT-30) will be used to assess language function. It ranges from 0 to 30, and higher value represents a better outcome. | up to 21 days (end of intervention), 3 months | |
Secondary | Change in Neuropsychiatric Inventory (NPI) scores | The Neuropsychiatric Inventory will be used to measure neuropsychiatric symptoms. It ranges from 0 to 144, and higher value represents a worse outcome. | up to 21 days (end of intervention), 3 months | |
Secondary | Change in Activities of Daily Living scores | Activities of Daily Living (ADL) scale will be used to assess the change of life quality. It ranges from 20 to 80. The "20" represents normal life ability and the higher score presents the worse life ability. | up to 21 days (end of intervention), 3 months | |
Secondary | Change in Magnetic Resonance Imaging performance | Function Magnetic Resonance Imaging (fMRI) will be used to measure changes in brain connectivity;Structural Magnetic Resonance Imaging (sMRI) will be used to measures structural changes in the brain. | up to 21 days (end of intervention), 3 months | |
Secondary | Incidence of tACS Adverse events | Adverse Events as a result of tACS stimulation will be reported. | up to 21 days (end of intervention), 3 months |
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