OBJECTIVE: The present study was undertaken to evaluate the alteration in the peripheral neuronal nitric oxide synthase (NOS) activity in Parkinson's disease patients. Therefore, basal nitrite content in PMNs, platelets and in the plasma of PD and control Indian population were evaluated. MATERIALS AND METHODS: We estimated nitrite, the nitric oxide (NO) metabolite, in neutrophils (PMNs), platelets and in plasma of control and in L-dopa treated Parkinson's disease (PD) patients. We also measured the activity of catalase, superoxide dismutase (SOD) and glutathione peroxidase (GPx) in the PMNs. RESULTS: We observed a significant increase in the basal nitrite content in PMNs of PD patients without any alteration in the plasma and platelets. Thus, the change was specific to PMNs. Catalase activity was significantly less in the PMNs of PD patients, but SOD and GPx remained unaltered. CONCLUSION: Results obtained in the PD patients exhibit an increase in the NOS activity in PMNs. Thus, involvement of NO is suggested in PD.
OBJECTIVE: The present study was undertaken to evaluate the alteration in the peripheral neuronal nitric oxide synthase (NOS) activity in Parkinson's diseasepatients. Therefore, basal nitrite content in PMNs, platelets and in the plasma of PD and control Indian population were evaluated. MATERIALS AND METHODS: We estimated nitrite, the nitric oxide (NO) metabolite, in neutrophils (PMNs), platelets and in plasma of control and in L-dopa treated Parkinson's disease (PD) patients. We also measured the activity of catalase, superoxide dismutase (SOD) and glutathione peroxidase (GPx) in the PMNs. RESULTS: We observed a significant increase in the basal nitrite content in PMNs of PDpatients without any alteration in the plasma and platelets. Thus, the change was specific to PMNs. Catalase activity was significantly less in the PMNs of PDpatients, but SOD and GPx remained unaltered. CONCLUSION: Results obtained in the PDpatients exhibit an increase in the NOS activity in PMNs. Thus, involvement of NO is suggested in PD.
Authors: Carmen R Sunico; Tomohiro Nakamura; Edward Rockenstein; Michael Mante; Anthony Adame; Shing Fai Chan; Traci Fang Newmeyer; Eliezer Masliah; Nobuki Nakanishi; Stuart A Lipton Journal: Mol Neurodegener Date: 2013-08-28 Impact factor: 14.195