About: Heat shock proteins as biomarkers of exposure to polycyclic aromatic hydrocarbons     Goto   Sponge   NotDistinct   Permalink

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  • A number of exogenous chemical compounds (xenobiotics) continuously affects the human organism, some of them cause the damage of DNA, or proteins. Polycyclic aromatic hydrocarbons (PAHs) are important pollutants, that are adsorbed to respirable air particles (<2.5 u.m) resulted from processes of incomplete combustion. These xenobiotics can be received even by the food chain. Some of PAHs have been identified as possible carcinogens to humans. Biomarkers are defined as indicators of exposure and effect of xenobiotics on human organism. Heat shock proteins have been found to be very sensitive biomarkers of environmental pollution, hsp32 protein is important for the degradation of heme to bilirubin; its expression is induced for example by cytochrome P450. This cytochrome is induced after the exposure to PAHs. hsp70 proteins help to repair denatured, or abnormal proteins, they also stabilize proteins. The purposes of the project: to investigate, if hsp32 and hsp70 proteins are expressed as (en)
  • Lidskě organismus je kontinu lnŘ vystavov n p…sobeni cel‚ ýady exogennˇch chemickěch l tek (xenobiotik), z nich§ mnoh‚ poçkozujˇ DNA nebo proteiny. Mezi věznamn‚ çkodliviny patýˇ i polycyklick‚ aromatick‚ uhlovodˇky (PAU), kter‚ jsou v ovzduçˇ adsorbov nna respirabilnˇ ź stice (<2,5 mě m), jejich§ zdrojem jsou r…zn‚ procesy nedokonal‚ho spalov nˇ. Tyto cizorod‚ l tky mohou bět pýijˇm ny i potravinověm ýetŘzcem. Mnoh‚ PAU se ýadˇ mezi potenci lnˇ karcinogeny pro źlovŘka. Biomarkery jsou indik tory, kter‚umo§ĺujˇ sledovat vliv xenobiotik na §ivě organismus. Proteiny teplotnˇho çoku (hsp) mohou bět citlivěmi biomarkery zneźiçtŘn‚ho prostýedˇ. Protein hsp32 se podˇlˇ na pýemŘnŘ hemu na bilirubin; jeho exprese je indukov na napr. cytochromem P450. Tento cytochrom je indukov n po p…sobenˇ PAU. Proteiny skupiny hsp70 se uplatĺujˇ pýi opravŘ denaturovaněch nebo jinak poçkozeněch protein… a mohou se tak‚ podˇlet na jejich stabilizaci. Cˇle navrhovan‚ho projektu: a) prok zat expresi protein… hsp32 a hsp70
Title
  • Heat shock proteins as biomarkers of exposure to polycyclic aromatic hydrocarbons (en)
  • Proteiny teplotnˇho çoku jako biomarkery expozice polycyklickěm aromatickěm uhlovodˇk…m
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  • GP310/01/P030
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  • Projekt byl pýedźasnŘ ukonźen na § dost ýeçitele, vzhledem k dlouhodob‚ zahraniźnˇ st §i. V r mci projektu byla sledov na exprese dvou protein… tepeln‚ho çoku a to Hsp32 a Hsp 70. Pýedpokl dalo se, §e exprese tŘchto molekul m…§e bět vyu§ita jako biomolek (cs)
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