The belief in the inability of neurogenesis, that is the inability to create new neurons after embryonic and early postnatal development of the central nervous system, was rejected in the mid-nineties, when the existence of neurogenesis in restricted areas of CNS adult mammals, including humans, was discovered.Transplantation of stem cells or their derivatives into respective tissues or organs is considered as one of the most promising remedies for many incurable diseases.In this review, we summarized current knowledge and present and future perspectives andchallenges regarding stem cells treatment for Parkinson's and Alzheimer's disease, as the most common age-related neurodegenerative diseases.

Changes in the heart and blood vessels are one of the major complications that substantially contribute to morbidity and mortality of patients with systemic diseases of connective tissue.All anatomical structures of the heart can be affected by pathological process and noted the multiple pathogenic mechanism leading to changes in pericard (thickening of leaves, calcification, pericardial outburst), atrial and ventricular arrhythmia, disorders of implementation, changes in heart failure in terms of whiskered or stenosis, myocardial ischemia and heart failure. The aim was also to test the registration of the most common heart rhythm disorder and implementation as well as changes in the ST segment and T wave of electrocardiogram of patients with systemic diseases of connective tissue. The study involved 70 patients in two groups. The first group was 50 patients with systemic disease of connective tissue, and the second control group of 20 patients with lumbal syndrome. Electrocardiographic changes were observed in 38(54,3%) respondents. Observed by groups of patients with connective tissue diseases were registered in 35 (70%) and in the control group in 3 (15%) patients with a statistically significant difference (p<0,01). Statistically significant difference was noted in the appearance of ventricular premature complex, changes in ST segment and T wave.