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Analysis of Elemental and Organic Carbon Eerosols: Crossroad vs. Suburban Area
Vodička, Petr ; Schwarz, Jaroslav ; Smolík, Jiří
Contribution present measurements of elemental and organic carbon aerosols during three measuring campaigns in periods 12.-15.5.09, 24.-27.8.09 and 6.-9.10.09. Measurements were performed in parallel at the crossroad Kamýcká-Suchdolská (outskirt part of Prague) and the Institute ICPF areal (urban background station). Measurements were carried out on on-line devices, in the two-hour intervals, with temperature program Eusaar2 on PM2.5 size fractions. The measurement results show that the field on-line device for measuring ECOC are suitable for monitoring of emissions from transport. Two-hour time resolution it allows to monitor the traffic intensity fluctuations caused by air pollution.
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Quest for protein biomarkers of neural stem cells differentiation
Skalníková, Helena ; Halada, Petr ; Vodička, Petr ; Motlík, Jan ; Horing, O. ; Jensen, O. N. ; Gadher, S. J. ; Pelech, S. ; Kovářová, Hana
Understanding neurogenesis and neural cell differentiation presents a unique challenge for treatment of nervous system disorders. To gain more insight about molecular mechanism of differentiation of neural cells, we applied different proteomic approaches using classical 2-DE followed by MS and antibody microarrays. Based on 2-DE, profile of constituent proteins of neural stem cells and their differentiated progenies was estabilished at first and then the protein species that are significantly up or down regulated during the differentiation were selected. Differentiation of neural cells was accompanied by changes in the expression of proteins involved in DNA and RNA binding, mRNA processing and transport, stress responses, iron storage and redox regulation. Immunoblot verified changes of hnRNP A1, hnRNP A2/B1, RafB, heme-oxygenasy 2, GRK2 proteins and alphaB-crystallin (S45), CDK1/2 (Y15), PKC mu (S738+S742), proline-rich Akt substrate (T246) phosphorylations during differentiation.
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Charakterizace míšních progenitorových buněk in vitro
Vitásková, Martina ; Klíma, Jiří ; Vodička, Petr ; Motlík, Jan
We performed in vitro studies with the spinal cord of mice and miniature pig. Employing papain dissociation system we isolated neural progenitor cells and cultured them in DMEM/F12 HEPES, Ala-Glu, gentamicin, heparin, B27 supplement without vitamin A, N2 supplement, EGF (Epidermal Growth Factor) and bFGF (Basic Fibroblast Growth Factor). We added retinoic acid and 10% fetal bovine serum into cultivation media to induce cell differentiation. Using immunocytochemistry we confirmed cell capability to differentiate into neurons (βIII-tubulin, Map 2A - Microtubule Associated Protein), astroglia (GFAP – Glial Fibrillary Acidic Protein), and oligodendroglia (CNPase - 2',3'-cyclic nucleotide 3'-phosphodiesterase). Cells can keep non-differentiated status for a longer period of time when cultured in low adhesion culturing flask or by addition of LIF (Leukemia Inhibitory Factor) to the cultivation media.
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