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Epidermal growth factor (EGF) has been proposed as a candidate biomarker for cognitive impairment in Parkinson’s disease (PD). We aimed to assess the relationship between serum EGF and cognitive functions in early, drug-naive PD patients and evaluate the predictive value of EGF on cognitive functions in a 2-year follow-up study. Serum EGF was measured in 65 early, drug-naive PD patients, that underwent...
Much pre-clinical evidence show that insulin-like growth factor 1 (IGF-1) provides protection against loss of dopaminergic neurons. Recently, IGF-1 has been proposed as a possible biomarker for early diagnosis of Parkinson’s disease (PD). We aimed to assess the relationship between serum IGF-1 levels and progression of motor symptoms in a cohort of drug-naïve PD patients. Serum IGF-1 was measured...
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