Активність маркерів оксидативного та нітрозативного стресів у плазмі крові пацієнтів із хворобою Паркінсона на ранніх стадіях
Bibliographic record
Abstract
The aim of the study is to investigate activity of markers of oxidative and nitrosative stresses in blood plasma of patients in the I–II stages of Parkinson’s disease (PD) and to determine correlations between their concentrations and severity of non-motor PD symptoms. Materials and methods. 67 patients at I–II PD stages and 20 healthy controls took part in the research. Cognitive functions were examined due to the Montreal Cognitive Assessment test – MoCA test. For the severity of psycho-emotional disorders evaluation the following scales and questionnaires were used: Night Sleep Assessment Questionnaire by A. M. Vein, Zung test for anxiety, apathy Starkstein scale, Boston stress-resistance test, Beck Depression Inventory (BDI-II). We performed ELISA test for determination of glutathione peroxidase (GPx) and glutathione-S-transferase (GST) activities and 3-nitrotyrosine (3-NT) level in blood plasma of participants (Elabscience® kit). Results. The middle age of PD patients and healthy controls was 64.35 ± 1.22 and 66.40 ± 0.70 years, respectively. GPx activity in plasma of patients at І–ІІ PD stages was significantly lower than in healthy controls (P < 0.001) and was higher at the I stage compared to the II PD stage (P = 0.003). Also GPx activity in PD patients with normal cognition was higher than in PD patients with cognitive impairment (P = 0.042). The GST activity in plasma of PD patients with anxiety was significantly lower (P = 0.002) compared to those without anxiety, and 3-NT blood plasma level in PD patients with moderate anxiety was higher than in those without one (P = 0.029). Conclusions. The activity of antioxidant GPx was significantly lower in PD patients at early stages compared to healthy controls, and in PD patients in the II stage of the disease compared to the I stage, and it was significantly lower in PD patients with cognitive impairment. PD patients with moderate anxiety had lower 3-NT levels and GST activity in blood plasma.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.008 | 0.002 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".