Efficacy of Nano-PSO in Parkinson's Disease.

The present research aims to carry out a double-blind, placebo-controlled clinical trial to study the efficacy of a new antioxidant. The primary outcome variables will be the changes observed in PD-motor and non-motor symptoms scales, as well as quality of life during a 6-months period. Global impression on the treatment will be rated after this period. Likewise, presynaptic changes will be studied in positron emission tomography studies, using 2 radiotracers and a dynamic image processing in patients with Parkinson's disease. 125 patients who have a definite diagnosis of PD will be included; 25 of them will be subjected to a triple-blind, clinical and molecular study. In addition, 25 other subjects from the same Institution and from 4 other collaborating centers will be part of the clinical arm of this study during the period September 2021- September 2022. During the first visit, various clinical data of the participants will be recorded such as: age, gender, family history, current medical conditions, and drugs dosage in addition to a comprehensive neurological examination. Subsequently, the signing of the informed consent will be obtained, and general laboratory tests and a brain RMI in 3dT1 and SWI sequences will be performed. A series of disease-specific scales will be applied in order to assess motor functional capacity, cognition, sleep, and other non-motor symptoms before drug delivery. Randomization will be made in blocks of 5 treatments: 3 nano-PSO and 2 placebos. Treatments will be delivered in form of bottles containing 100 capsules each after baseline and intermediate visit. 25 patients will also give their consent to perform 2 PET studies (positron emission tomography) to assess presynaptic dopaminergic function. This implies conducting these studies on 2 occasions (at the beginning and at the end of treatment), with emphasis on striatal activity to study the effect of treatment with Nano-PSO.