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    Hygienic assessment of impact on public health air pollution in view of the combined actions of chemicals in the area of the chemical industry

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    The article presents the results of air pollution study in the area of chemical industry. The results of evaluating possible impact of chemical pollution on the population health are reflected by the parameter values: complex indicator β€œR” public health risk (reflexive, chronic, and combined risk at the reflexive and chronic action), hazard index and combined action coefficient. The comparative characteristic of the received data is provided by the degree of air pollution during the evaluation, taking into account the combined effect of chemicals and during the evaluation without the combined action of chemicals. The possibility of using the results to predict the changes in the population health status and to plan epidemiological studies is determined

    ΠœΠΈΠΊΡ€ΠΎΠ΄ΡƒΠ³ΠΎΠ²Ρ‹Π΅ Zn- ΠΈ Ag-содСрТащиС покрытия для ΠΈΠΌΠΏΠ»Π°Π½Ρ‚Π°Ρ‚ΠΎΠ² со слоТной ΠΏΠΎΡ€ΠΎΠ²ΠΎΠΉ Π°Ρ€Ρ…ΠΈΡ‚Π΅ΠΊΡ‚ΡƒΡ€ΠΎΠΉ, ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Ρ… ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ 3D-ΠΏΠ΅Ρ‡Π°Ρ‚ΠΈ ΠΈΠ· Ρ‚ΠΈΡ‚Π°Π½ΠΎΠ²ΠΎΠ³ΠΎ сплава

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    Relevance. The creation of porous three-dimensional materials for bone defects compensation and its subsequent regeneration is an important direction of medical materials science. The key issue in the interaction of an implant and bone tissue is the surface properties of the implant.The purpose of the study is to evaluate the physicochemical properties and compatibility of tissues of a living organism and porous implants with calcium phosphate Zn- and Ag-containing formed by microarc oxidation.Materials and Methods. Implants with various types of porous structure were made by direct laser sintering of titanium alloy Ti-6Al-4V powders. The calcium phosphate coatings, including Zn- and Ag-containing, were formed on the implants surface by microarc oxidation.Results. Coatings, deposited in electrolytes of various compositions, were uniformly distributed over the implants mesh structure. The phase composition of Zn-containing coatings, deposited in the acidic electrolyte, was represented by amorphous calcium phosphates. Ag-containing coatings, deposited in the alkaline electrolyte, had an amorphous-crystalline structure, the crystalline phase of which was identified as tricalcium phosphate in the Ξ± and Ξ² modifications. The samples of extracts of calcium phosphate Zn and Ag-containing coatings were co-cultured with pFb line of the human postnatal fibroblasts for 48 hours at 37Β°C in 5% CO2 atmosphere. The MTT test revealed a high metabolic activity of the co-cultured fibroblasts in comparison with the fibroblasts of control.Conclusion. The pFb line of the human postnatal fibroblasts retained their viability for 48 hours of co-culturing with calcium-phosphate Zn- and Ag-containing coatings. The tested product and its components did not negatively affect the cellular respiration. However, further studies are needed to determine the rate of bioresorption and the degree of antibacterial activity of calcium-phosphate Zn- and Ag-containing coatings.ΠΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½ΠΎΡΡ‚ΡŒ. Π‘ΠΎΠ·Π΄Π°Π½ΠΈΠ΅ пористых Ρ‚Ρ€Π΅Ρ…ΠΌΠ΅Ρ€Π½Ρ‹Ρ… ΠΌΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»ΠΎΠ² для возмСщСния Π΄Π΅Ρ„Π΅ΠΊΡ‚ΠΎΠ² кости ΠΈ Π΅Π΅ ΠΏΠΎΡΠ»Π΅Π΄ΡƒΡŽΡ‰Π΅ΠΉ Ρ€Π΅Π³Π΅Π½Π΅Ρ€Π°Ρ†ΠΈΠΈ являСтся Π²Π°ΠΆΠ½Ρ‹ΠΌ Π½Π°ΠΏΡ€Π°Π²Π»Π΅Π½ΠΈΠ΅ΠΌ мСдицинского матСриаловСдСния. ΠžΠΏΡ€Π΅Π΄Π΅Π»ΡΡŽΡ‰ΠΈΠΌΠΈ ΡΠ²Π»ΡΡŽΡ‚ΡΡ свойства повСрхности ΠΈΠΌΠΏΠ»Π°Π½Ρ‚Π°Ρ‚Π° ΠΏΡ€ΠΈ взаимодСйствии послСднСго с костной Ρ‚ΠΊΠ°Π½ΡŒΡŽ.ЦСль исслСдования β€” ΠΎΡ†Π΅Π½ΠΈΡ‚ΡŒ Ρ„ΠΈΠ·ΠΈΠΊΠΎ-химичСскиС свойства ΠΈ ΡΠΎΠ²ΠΌΠ΅ΡΡ‚ΠΈΠΌΠΎΡΡ‚ΡŒ с тканями ΠΆΠΈΠ²ΠΎΠ³ΠΎ ΠΎΡ€Π³Π°Π½ΠΈΠ·ΠΌΠ° пористых ΠΈΠΌΠΏΠ»Π°Π½Ρ‚Π°Ρ‚ΠΎΠ² со сформированными ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ ΠΌΠΈΠΊΡ€ΠΎΠ΄ΡƒΠ³ΠΎΠ²ΠΎΠ³ΠΎ оксидирования ΠΊΠ°Π»ΡŒΡ†ΠΈΠΉ-фосфатными Zn- ΠΈ Ag-содСрТащими покрытиями.ΠœΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π» ΠΈ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹. Π˜ΠΌΠΏΠ»Π°Π½Ρ‚Π°Ρ‚Ρ‹ с Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹ΠΌΠΈ Ρ‚ΠΈΠΏΠ°ΠΌΠΈ пористой структуры ΠΏΠΎΠ»ΡƒΡ‡Π°Π»ΠΈ ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ прямого Π»Π°Π·Π΅Ρ€Π½ΠΎΠ³ΠΎ спСкания ΠΈΠ· ΠΏΠΎΡ€ΠΎΡˆΠΊΠΎΠ² Ρ‚ΠΈΡ‚Π°Π½ΠΎΠ²ΠΎΠ³ΠΎ сплава Ti-6Al-4V. На повСрхности ΠΈΠΌΠΏΠ»Π°Π½Ρ‚Π°Ρ‚ΠΎΠ² Π±Ρ‹Π»ΠΈ сформированы ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ ΠΌΠΈΠΊΡ€ΠΎΠ΄ΡƒΠ³ΠΎΠ²ΠΎΠ³ΠΎ оксидирования ΠΊΠ°Π»ΡŒΡ†ΠΈΠΉ-фосфатныС покрытия, Π² Ρ‚ΠΎΠΌ числС Zn- ΠΈ Ag-содСрТащиС.Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹. ΠŸΠΎΠΊΡ€Ρ‹Ρ‚ΠΈΡ, нанСсСнныС Π² элСктролитах Ρ€Π°Π·Π½Ρ‹Ρ… составов, Ρ€Π°Π²Π½ΠΎΠΌΠ΅Ρ€Π½ΠΎ распрСдСлСны ΠΏΠΎ сСтчатой структурС ΠΈΠΌΠΏΠ»Π°Π½Ρ‚Π°Ρ‚ΠΎΠ². Π€Π°Π·ΠΎΠ²Ρ‹ΠΉ состав Zn-содСрТащих ΠΏΠΎΠΊΡ€Ρ‹Ρ‚ΠΈΠΉ, нанСсСнных Π² кислом элСктролитС, прСдставлСн Π°ΠΌΠΎΡ€Ρ„Π½Ρ‹ΠΌΠΈ фосфатами ΠΊΠ°Π»ΡŒΡ†ΠΈΡ. Ag-содСрТащиС покрытия, нанСсСнныС Π² Ρ‰Π΅Π»ΠΎΡ‡Π½ΠΎΠΌ элСктролитС, ΠΈΠΌΠ΅ΡŽΡ‚ Π°ΠΌΠΎΡ€Ρ„Π½ΠΎ-ΠΊΡ€ΠΈΡΡ‚Π°Π»Π»ΠΈΡ‡Π΅ΡΠΊΡƒΡŽ структуру, Π² качСствС кристалличСской Ρ„Π°Π·Ρ‹ Π² Π½ΠΈΡ… идСнтифицируСтся Ρ‚Ρ€ΠΈΠΊΠ°Π»ΡŒΡ†ΠΈΠΉΡ„ΠΎΡΡ„Π°Ρ‚ Π² ΠΌΠΎΠ΄ΠΈΡ„ΠΈΠΊΠ°Ρ†ΠΈΠΈ Ξ± ΠΈ Ξ². По Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π°ΠΌ МВВ-тСста Π±Ρ‹Π»Π° выявлСна высокая мСтаболичСская Π°ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ ΠΏΠΎΡΡ‚Π½Π°Ρ‚Π°Π»ΡŒΠ½Ρ‹Ρ… фибробластов Ρ‡Π΅Π»ΠΎΠ²Π΅ΠΊΠ° Π»ΠΈΠ½ΠΈΠΈ pFb ΠΏΡ€ΠΈ ΠΈΡ… совмСстном ΠΊΡƒΠ»ΡŒΡ‚ΠΈΠ²ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠΈ с экстрактами ΠΎΠ±Ρ€Π°Π·Ρ†ΠΎΠ² ΠΊΠ°Π»ΡŒΡ†ΠΈΠΉ-фосфатных Zn- ΠΈ Ag-содСрТащих ΠΏΠΎΠΊΡ€Ρ‹Ρ‚ΠΈΠΉ Π² Ρ‚Π΅Ρ‡Π΅Π½ΠΈΠ΅ 48 Ρ‡. Π² условиях 37ΒΊΠ‘, Π² 5% атмосфСрС БО2, Π² сравнСнии с Π²Π΅Π»ΠΈΡ‡ΠΈΠ½ΠΎΠΉ мСтаболичСской активности ΠΏΠΎΡΡ‚Π½Π°Ρ‚Π°Π»ΡŒΠ½Ρ‹Ρ… фибробластов Ρ‡Π΅Π»ΠΎΠ²Π΅ΠΊΠ° ΠΈΠ½Ρ‚Π°ΠΊΡ‚Π½ΠΎΠΉ ΠΊΡƒΠ»ΡŒΡ‚ΡƒΡ€Ρ‹.Π—Π°ΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅. Π’ процСссС исслСдования влияния ΠΊΠ°Π»ΡŒΡ†ΠΈΠΉ-фосфатных Zn- ΠΈ Ag-содСрТащих ΠΏΠΎΠΊΡ€Ρ‹Ρ‚ΠΈΠΉ Π½Π° ΠΆΠΈΠ²Ρ‹Π΅ ΠΏΠΎΡΡ‚Π½Π°Ρ‚Π°Π»ΡŒΠ½Ρ‹Π΅ фибробласты Ρ‡Π΅Π»ΠΎΠ²Π΅ΠΊΠ° Π»ΠΈΠ½ΠΈΠΈ pFb выявили сохранСниС ТизнСспособности ΠΊΠ»Π΅Ρ‚ΠΎΠΊ ΠΊΡƒΠ»ΡŒΡ‚ΡƒΡ€Ρ‹, Ρ‡Ρ‚ΠΎ позволяСт ΡΠ΄Π΅Π»Π°Ρ‚ΡŒ Π·Π°ΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅ ΠΎ Ρ‚ΠΎΠΌ, Ρ‡Ρ‚ΠΎ ΠΈΠ·Π΄Π΅Π»ΠΈΠ΅ ΠΈ Π΅Π³ΠΎ ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½Ρ‚Ρ‹ Π½Π΅ влияли Π½Π΅Π³Π°Ρ‚ΠΈΠ²Π½ΠΎ Π½Π° ΠΏΠΎΠΊΠ°Π·Π°Ρ‚Π΅Π»ΡŒ ΠΊΠ»Π΅Ρ‚ΠΎΡ‡Π½ΠΎΠ³ΠΎ дыхания, Ρ‡Ρ‚ΠΎ обСспСчиваСт ΡΠΎΡ…Ρ€Π°Π½Π½ΠΎΡΡ‚ΡŒ ТизнСспособности ΠΊΠ»Π΅Ρ‚ΠΎΠΊ Π² Ρ‚Π΅Ρ‡Π΅Π½ΠΈΠ΅ 48 Ρ‡. Однако Π½Π΅ΠΎΠ±Ρ…ΠΎΠ΄ΠΈΠΌΡ‹ дальнСйшиС исслСдования для опрСдСлСния скорости Π±ΠΈΠΎΡ€Π΅Π·ΠΎΡ€Π±Ρ†ΠΈΠΈ ΠΈ стСпСни выраТСнности Π°Π½Ρ‚ΠΈΠ±Π°ΠΊΡ‚Π΅Ρ€ΠΈΠ°Π»ΡŒΠ½Ρ‹Ρ… свойств ΠΊΠ°Π»ΡŒΡ†ΠΈΠΉ- фосфатных Zn- ΠΈ Ag-содСрТащих ΠΏΠΎΠΊΡ€Ρ‹Ρ‚ΠΈΠΉ
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