Tool Like Receptors (TLR) are transmembrane proteins that play an important role in immune reactions associated with the recognition of pathogenic factors that cause infection. However, chronic infl ammatory conditions associated with the activation of these receptors create favorable conditions for the development of cancerous processes. Th e relationship between nuclear PPARγ receptors and TLR receptors is also important, whose role and importance in the process of carcinogenesis is the subject of various studies.

Assessment of photosynthetic activity is one of the quick and simple methods of verification whether the studied environmental factors have a stressful effect on photosynthetically active organisms. High-intensity light can be a stress factor that could have a potential impact on the maximum productivity of photosystem II. The purpose of the conducted research was to observe changes in photosynthetic activity of the lichen Cladonia mitis and the bryophyte Pleurozium schreberi exposed to artificial high-energy lighting under laboratory culture conditions. The obtained results showed variability of photosynthetic activity over time, depending on the amount of light energy supplied. C. mitis and P. schreberi at full exposure (light energy: 52.03 W m ^-2 and photosynthetically active radiation 167.24 μmol m ^-2) showed a slow downward trend in photosynthetic activity, while at half the light intensity periodic fluctuations were observed without changes in the controls. Long-term and high-light intensity exposure of photosynthetically active organisms may cause gradual degradation of the photosynthetic apparatus, which in turn leads to cell death. Low values of photosynthetic activity may indicate a situation in which, due to excess light, the rate of photosystem II damage exceeds the rate of its repair. This leads to irreversible damage to the photosynthetic apparatus.

On the basis of surface pressure analyses covering the area of south-west Atlantic, maps of monthly mean pressure fields for the period from March to December 1979 were drawn. In order to accentuate the dynamics of pressure processes, maps of standard deviation as well as of the skewness coefficient of the values forming the pressure field were also prepared. Apart from this, the variation of pressure in the particular points of the field in the months considered, was discussed. Attention was drawn to the distinct quasi-periodicity, dependent on location of the given point.