BACKGROUND: Parkinson's disease is a neurodegenerative disorder involving the basal ganglia. Type-2 Diabetes Mellitus is an important risk factor for Alzheimer disease and vascular dementia. However, the association between Parkinson's disease and Diabetes Mellitus is controversial. OBJECTIVE: To investigate glucose metabolism abnormalities in 110 Parkinson's disease patients with and without dementia. SUBJECTS AND METHODS: We evaluated Insulin Resistance, glucose and insulin levels after a 2-h-oral-glucose-tolerance-test in 53 Parkinson's disease with dementia and 57 with Parkinson's disease without dementia, with normal fasting glucose. RESULTS: BMI, waist circumference, fasting glucose and insulin values, HbA1c, triglycerides, blood lipid profile, depression rating, educational levels, levodopa-dosage and antipsychotic use were similar in both groups. Disease duration and motor impairment were higher in patients with Parkinson's disease and dementia group. After 2-h-oral-glucose-tolerance-test, the prevalence of glucose metabolism abnormalities was significantly higher in group with Parkinson's disease and dementia group (p=0.03). The insulin resistance was present in 62% patients with Parkinson's disease with dementia, of whom 30% had also impaired glucose tolerance, 5,6% newly diagnosed Diabetes Mellitus and 26% only Insulin Resistance. These percentages were significantly higher in group with Parkinson's disease and dementia, also after adjustment for disease duration and motor disability. CONCLUSIONS: Our study suggests that PD patients with dementia are two times more likely to have insulin resistance than patients with PD.
BACKGROUND:Parkinson's disease is a neurodegenerative disorder involving the basal ganglia. Type-2 Diabetes Mellitus is an important risk factor for Alzheimer disease and vascular dementia. However, the association between Parkinson's disease and Diabetes Mellitus is controversial. OBJECTIVE: To investigate glucose metabolism abnormalities in 110 Parkinson's diseasepatients with and without dementia. SUBJECTS AND METHODS: We evaluated Insulin Resistance, glucose and insulin levels after a 2-h-oral-glucose-tolerance-test in 53 Parkinson's disease with dementia and 57 with Parkinson's disease without dementia, with normal fasting glucose. RESULTS: BMI, waist circumference, fasting glucose and insulin values, HbA1c, triglycerides, blood lipid profile, depression rating, educational levels, levodopa-dosage and antipsychotic use were similar in both groups. Disease duration and motor impairment were higher in patients with Parkinson's disease and dementia group. After 2-h-oral-glucose-tolerance-test, the prevalence of glucose metabolism abnormalities was significantly higher in group with Parkinson's disease and dementia group (p=0.03). The insulin resistance was present in 62% patients with Parkinson's disease with dementia, of whom 30% had also impaired glucose tolerance, 5,6% newly diagnosed Diabetes Mellitus and 26% only Insulin Resistance. These percentages were significantly higher in group with Parkinson's disease and dementia, also after adjustment for disease duration and motor disability. CONCLUSIONS: Our study suggests that PDpatients with dementia are two times more likely to have insulin resistance than patients with PD.
Authors: Steven E Arnold; Zoe Arvanitakis; Shannon L Macauley-Rambach; Aaron M Koenig; Hoau-Yan Wang; Rexford S Ahima; Suzanne Craft; Sam Gandy; Christoph Buettner; Luke E Stoeckel; David M Holtzman; David M Nathan Journal: Nat Rev Neurol Date: 2018-01-29 Impact factor: 42.937
Authors: Medha Priyadarshini; Mohammad A Kamal; Nigel H Greig; Marcella Reale; Adel M Abuzenadah; Adeel G A Chaudhary; Ghazi A Damanhouri Journal: CNS Neurol Disord Drug Targets Date: 2012-06-01 Impact factor: 4.388