The aims of this doctoral thesis were to determine the expression of adhesion molecules on granulocytes and monocytes in rats that consumed white wine before myocardial infarction and on the breast and prostate cancer stem cells after treatment with newly synthesised inhibitor of phospholipase C, 3-amino-5-oxo-N-naphthyl-5,6,7,8-tetrahydrotieno[2,3-b]quinoline-2-carboxamide. Neutrophil and monocyte CD15s and CD11b adhesion molecules are involved in the initiation of inflammation while CD44 molecule is implicated in the resolution of cardiac inflammation as well as in healing processes after the myocardial infarction. Blood of male Sprague Dawley rats, that consumed white wine during 4 weeks before infarction, was sampled 24 hours after infarction and analysed using flow cytometry. This group was compared with water only drinking controls, sham animals (subject to surgery without myocardial infarction) and baseline group (intact animals that received no intervention prior to being sacrificed). Sham animals did not differ from baseline animals nor in the percentage of subpopulations neither in the adhesion molecule expression. Wine drinking was associated with multiple increase in CD44 expression on large monocyte and monocytes. Knowing modulation ability of CD44 to suppress post-infarction inflammation and to transform fibroblast into myofibroblasts, the CD44 finding implicates benefitial role of white wine in the cardiac healing. The effects of the newly synthesized phospholipase C inhibitor were analyzed through the parameters of growth and survival (MTT test), apoptosis (PI and annexin-V analysis), cancer stem cell percentage (CD44+CD24-), and stem cell glycophenotypes (CD15s and GM3 (NeuAc)) of breast (MDA-MB-231) and prostate (Du-145) tumor lines. All parameters, except for the MTT assay, were determined using flow cytometry, 48 hours after treatment with 2 μM inhibitor. The MTT test analyzed the effect of five different concentrations of inhibitor over four time intervals. Inhibitor produces cytotoxicity in both cell lines, mediated by apoptosis in breast cancer cells, and slightly but statistically significantly lowering breast stem cell subpopulation while GM3(NeuAc) expression per one breast stem cell was increased compared with controls. GM3(NeuAc) is the important inhibitor of growth factor signal transduction. The percentage of potentially metastatic stem cell subpopulation (CD15s+) was lower in both cell lines after treatment with the inhibitor. Cell line MDA-MB-231 represents triple-negative breast cancer. Considering that such cancers are characterized by an increased percentage of breast cancer stem cells and knowing their association with an increased risk of metastasis and mortality, the new phospholipase C inhibitor (belonging to thieno[2,3-b]pyridine inhibitors) may be a potentially effective drug for triple-negative breast cancer treatment.