Tadeusz Stefan Kurkiewicz (1885-1962) belongs to the well-known Polish histologists and embryologists. His scientific activity started in the Department of Biology and Embryology of the Jagiellonian University in Cracow, which was chaired by professor Emil Godlewski (1875-1944), famous Polish embryologist. Between years 1908-1911, under supervision of the pioneer of the Polish histology, professor Stanisław Maziarski (1873-1959) T. Kurkiewicz continued researches in the Department of Histology of the Jagiellonian University. In 1909 he published results of studies on the development of cardiac muscle in the chick and on the basis of this publication on July 21, 1911 Tadeusz Kurkiewicz received Ph.D. from the Jagiellonian University. Between 1922 and 1959 (with the exception of the period of German occupation) Tadeusz Kurkiewicz was the head of the Department of Histology and Embryology of the Faculty of Medicine of the Poznań University and Academy of Medicine in Poznań (at present: Poznań University of Medical Sciences). His Ph.D. thesis demonstrated that the epicardium originates from pericardial villi, it means from extracardiac source. This great scientific achievement has been confirmed by recent studies. In this article we present curriculum of Tadeusz Kurkiewicz and impact of his discovery on contemporary cardiology.
Piotr Celichowski, Karol Jopek, Marta Szyszka, Paulina Milecka, Ludwik K. Malendowicz, Marianna Tyczewska and Marcin Ruciński
Nampt (Nicotinamidephosphoribosyltransferase - also known as visfatin/PBEF) is the enzyme that regulates the NAD+ level, therefore influencing many metabolic pathways within the cells. As circulating cytokine, extracellular Nampt (eNampt) exerts pro-inflammatory, pro-chemotactic, pro-angiogenic and insulin-like effects; however the mechanism of eNampt action is still unclear.Earlier studies have shown that eNampt exerts a stimulating effect on the proliferation of many cancer cell lines. However, the effect of this cytokine on cell proliferation in primary culture is little known. Therefore, the aim of the study was to analyse the influence of eNampt on the proliferation of rat adrenocortical cells in primary culture and to investigate similar influence of eNampt on the line H295R of human adrenal corticocarcinoma cells. Proliferation of the examined cells was assessed using the RTCA (Real Time Cell Analyzer) method. The obtained results indicate that eNampt stimulates the proliferation of H295R cells, but does not change the proliferation of cultured rat adrenocortical cells. In primary culture of rat adrenocortical cells, Fk866 (specific Nampt inhibitor) does not modify the rate of proliferation of tested cells. In H295R cells the addition of Fk866 alone inhibits proliferative activity and stimulates apoptosis. Fk866 also inhibits the stimulating effect of eNampt on H295R cell proliferation.