This exploratory pilot study aims to evaluate the cognitive improvement effects of combination therapy with cilostazol (200 mg) and ginkgo biloba extract (160 mg) in elderly patients with type 2 diabetes mellitus. Both agents have demonstrated potential cognitive benefits through mechanisms such as enhanced cerebral blood flow, anti-inflammatory activity, and neuroprotection. Given the increased risk of cognitive decline and dementia in patients with type 2 diabetes, and the need for preventive strategies, this study will investigate whether the combination therapy can prevent or mitigate cognitive deterioration. Findings from this study may provide foundational data for the future development of therapeutic interventions targeting cognitive impairment in patients with diabetes.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
SUPPORTIVE_CARE
Masking
QUADRUPLE
Enrollment
80
Patients will receive a light green, oval-shaped, sustained-release film-coated tablet containing a combination of cilostazol (200 mg) and ginkgo biloba extract (160 mg), administered orally once daily.
Patients will receive a placebo identical in taste, aroma, and formulation to the active treatment, administered orally once daily.
Seoul National University Bundang Hospital
Seongnam-si, South Korea
RECRUITINGChange in Mini-Mental State Examination (MMSE) Score From Baseline to 6 Months
The MMSE is a widely used test of cognitive function among the elderly. It includes tests of orientation, attention, memory, language, and visual-spatial skills. Scores range from 0 to 30, with higher scores indicating better cognitive function. A change in total MMSE score from baseline to 6 months will be assessed.
Time frame: 6 months
Change in Korean Dementia Screening Questionnaire (KDSQ) Score From Baseline to 6 Months
The Korean Dementia Screening Questionnaire (KDSQ) is a caregiver- or self-administered tool used to screen for cognitive decline in older adults. It consists of 15 items, each scored from 0 to 2, for a total possible score of 0 to 30. Higher scores indicate greater cognitive impairment. A change in the total KDSQ score from baseline to 6 months will be assessed.
Time frame: 6 months
Change in Korean Version of the Montreal Cognitive Assessment (K-MoCA) Score From Baseline to 6 Months
The K-MoCA is a cognitive screening tool used to detect mild cognitive impairment and early dementia (https://mocacognition.com/paper/). It assesses multiple domains including attention, executive function, memory, language, visuospatial skills, abstraction, calculation, and orientation. Higher scores indicate better cognitive function (Score Range: 0 to 30). A change in the total K-MoCA score from baseline to 6 months will be assessed.
Time frame: 6 months
Change in Global Deterioration Scale (GDS) Stage From Baseline to 6 Months
The GDS is a clinical tool used to assess the severity of cognitive decline, particularly in Alzheimer's disease and other dementias. It includes 7 stages, ranging from: Stage 1: No cognitive decline \~ Stage 7: Very severe cognitive decline. Higher scores indicate more severe cognitive impairment. A change in the GDS stage from baseline to 6 months will be recorded based on clinical assessment.
Time frame: 6 months
Change in Short Form-36 Health Survey (SF-36) Scores From Baseline to 6 Months
The SF-36 Health Survey is a 36-item, patient-reported questionnaire that assesses health-related quality of life across 8 domains: Physical Functioning, Role Limitations due to Physical Health, Role Limitations due to Emotional Problems, Energy/Fatigue (Vitality), Emotional Wellbeing (Mental Health), Social Functioning, Pain (Bodily Pain), General Health Perceptions. Each domain is scored separately on a scale from 0 to 100, with higher scores indicating better health status. Summary scores, such as the Physical Component Summary (PCS) and Mental Component Summary (MCS), may also be calculated. Changes in domain and/or summary scores from baseline to 6 months will be assessed.
Time frame: 3, 6 months
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