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Raumatic Damage Pathomechanism of Cerebral Vessels Caused by Geriatric Changes

Wiczkowski E., Kędzia A., Kania A.

Engineering Transactions

2003

Vol. 51, iss.2-3

339-347

The knowledge of mechanical properties of the brain blood vessels enables an assessment of pathological changes caused by human aging. As it results from our investigations, a greater elasticity of blood vessels in the occipital region accounts for the rare occurrence of subdural space blood clots in this region of the brain. Also, a map can be derived based on our results, of the most severe head trauma directions causing damages of blood vessels in the subdural space.

Statherin SV2 and Its Analogue. Synthesis and Evaluation of Antimicrobial Activity

Kamysz W., Kochańska B., Kędzia A., Ochocińska J., Maćkiewicz Z., Kupryszewski G.

Polish Journal of Chemistry

2002

Vol. 76 / nr 6

801-806

Statherins are natural peptides derived from human saliva. They may take part in transport of calcium and phosphate and most probably are partly responsible for protection and recalcification of tooth enamel. The solid phase synthesis of statherin SV2 and its dephosphorylated analogue, their purification by solid phase extraction (SPE), as well as the evaluation of their antibacterial activity are presented.

The effect of humic substances isolated from a variety of marine and lacustrine environments on different microorganisms [commun.]

Kupryszewski G., Pempkowiak J., Kędzia A.

Oceanologia

2001

No. 43 (2)

257-261

The antimicrobial activity of twelve preparations of humic substances isolated from sea water, marine bottom sediments and lake water was examined. Humic substances from marine bottom sediment samples were fractionated into humic and/or fulvic acids. The susceptibility of 11 strains of anaerobic, 8 strains of aerobic bacteria and 2 strains of yeast-like fungi to preparations of humic substances, humic and/or fulvic acids was determined employing the plate dilution technique in Brucella agar (anaerobic bacteria), Mueller-Hinton agar (aerobic bacteria) and Sabouraud agar (yeast-like fungi). Concentrations from 150 to 600 žg ml-1 of the preparations examined inhibited the growth of numerous microorganisms (Table). The results obtained seem to indicate that humic substances are involved in the self-purification of sea and lake waters.