The results of phytosociological studies of pioneer lichen communities of siliceous outcrops carried out in 2014-2016 in Teteriv River basin (Ukraine) are provided. The dataset of 302 relevés was analysed, 6 associations and 1 subassociation from 3 classes were distinguished as a result of the phytosociological survey in the Teteriv River basin. Four associations, i.e.: Aspicilietum contortae Kaiser ex Klement 1955, Cladonietum mitis Krieger 1937, Parmelietum conspersae Hilitzer 1925, Parmelietum somloensis Wirth 1995 and the alliance Aspicilion calcareae Albertson ex Roux 1978 are new for Ukraine, and one new association Aspicilio cinerei-Ramalinetum pollinariae Kapets et Khomyak, ass. nova is described here.
The paper presents the results of research of Kharkiv bryoflora and the three largest cities of Kharkiv region: Izum, Balakleya and Kupiansk. The list of bryophyte flora is given. It contins information about 104 species and varieties briofitiv and their occurrence in different types of natural and man-made habitats in the studied cities, as well as missing and erroneously of given form.
Telomere attrition is attributed to Alzheimer's disease (AD), major depressive disorder, stress levels, physical inactivity, short sleep duration, and reduced educational abilities. In this article, we tried to assess the association between the telomere length in peripheral blood leukocytes and level of cognitive impairment and its dependence on age and sex.Healthy subjects and patients with amnestic mild cognitive impairment (aMCI) and different AD stages were recruited in the study. All patients were assessed by the same standard diagnostic procedure, including neurological examination – Mini-Mental State Examination (MMSE). Blood samples from 66 subjects (18 men and 48 women, mean age 71.2 ± 0.56 years) were collected for DNA extraction from peripheral mononuclear cells (PBMC). Relative telomere length (RTL) was measured by monochrome multiplex polymerase chain reaction.Obtained in the study data indicate that RTL in PBMCs has a statistically significant association with MMSE score (p<0.02). Moreover, the sex-specific difference was observed for the association between telomere length and various parameters of MMSE. Also, it has been found that a decrease in RTL by one unit is associated with an increase in the odds to get AD with the odds ratio of 2.54 (95% CI, 1.25 to 5.17).The results obtained in this research are in coherence with other studies that telomere length may be a valuable biomarker of cognitive decline. However, the potential need for longitudinal studies of telomere length to estimate the influence of hereditary and environmental factors remains.
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