Although our demographic data were similar to formerly collected Turkish MS data, we found that the distribution of the patients' clinical course differed if there was an absence of primary progressive MS and that there was a lower frequency of secondary progressive MS cases in our group of patients. We believe that less frequent oligoclonal band positivity and the difference we witnessed in the clinical course of disease in our study groups suggest that there is a need for further studies to compare all the biological and immunological differences between MS and tumefactive lesion cases, in order to reveal whether there are different pathogenetic mechanisms involved.

In patients with IPD who are detected to have hyperhomocysteinemia, the assessment of the cognitive performance, folic acid and vitamin B12 levels and the supplementation of folic acid and vitamin B12 to the treatment regimen might be appropriate.

Aspirin is used in ischemic stroke therapy. However, some patients are not responsive to the antithrombotic action of aspirin. The aim of this study was to assess the prevalence of aspirin resistance in stroke patients and its association with mortality. One-hundred and six patients (mean age 64.9 ± 14.6 years, 53 male) with acute ischemic stroke were consecutively recruited. All subjects were taking aspirin regularly. Aspirin responsiveness was determined by Ultegra Rapid Platelet Function Assay-ASA (VerifyNow Aspirin). Aspirin resistance was defined as aspirin reaction unit (ARU) ≥ 550. Aspirin resistance was detected in 35 patients. There were not any significant differences in age, gender and comorbidities between aspirin-resistant and aspirin-sensitive patients. The mean National Institute of Health Stroke Scale (NIHSS) scores of the aspirin-resistant and aspirin-sensitive patients were 15 ± 3 and 12 ± 5, respectively (p = 0.006). Twenty-seven patients had a history of prior ischemic stroke and eight of them had aspirin resistance. Eleven patients died in-hospital and a total of 43 patients died during 2 years. Both the in-hospital and 2-year mortality rates were significantly higher in patients with aspirin resistance (20 vs. 5.6%, p = 0.038 and 60.0 vs. 31.0%, p = 0.004, respectively). Regression analysis revealed aspirin resistance [odds ratio (OR) 3.097, 95% confidence interval (CI) 1.070-8.959, p = 0.037] as an independent predictor of 2-year mortality, as well as age (OR 1.051, 95% CI 1.003-1.102, p = 0.038) and NIHSS scores (OR 1.208, 95% CI 1.016-1.437, p = 0.033). Aspirin resistance is not uncommon in patients with acute ischemic stroke and is associated with short and long term mortality in these patients.

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In patients with PD, there may be a common factor that modulates both depression, anxiety and sexual function. Further studies are needed to clarify the exact relationship.