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Wyświetlanie 1-3 z 3
Tytuł:
Predictive acute toxicity comparison in Daphnia magna for common organic chemicals present in cosmetics by using two QSAR modeling softwares
Autorzy:
Talapatra, Soumendra Nath
Konar, Sarnali
Powiązania:
https://bibliotekanauki.pl/articles/1190143.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
QSAR modelling
Cosmetic organic chemicals
T.E.S.T. and ECOSAR software
Predictive acute toxicity
Daphnia magna
Opis:
Different types of organic compounds, which are used in cosmetics from decades. The usage of cosmetic products are mainly by people in office, culture, festival, recreation etc. All of these chemicals are of synthetic origin. The present study aims to predict comparative acute toxicity as LC50 (median lethal concentration) values in Daphnia magna for common types of cosmetic compounds. The predictions of LC50 values were determined by using two QSAR modeling softwares, T.E.S.T. or Toxicity Estimation Software Tool and ECOSAR (Ecological Structure Activity Relationship), for established 23 types of chemicals commonly present in cosmetics. These two softwares help to predict of LC50 values by easy screening. In present result, predictive data with statistical interpretation (R2 or correlation coefficient values) were obtained easily in T.E.S.T. but not in ECOSAR and the statistical data interpretation was not found. Among all these chemicals, it was observed that major compounds are not toxic to D. magna except few chemicals viz. ascorbyl palmitate, triclosan, methyl triclosan and triclocarbon. Further researches are suggested to compare these predicted data with other available 2-dimentional and 3-dimentional softwares and these chemicals should be studied in combinations of cosmetic chemicals with this test model in vivo because they are major food sources for fish in freshwater ecosystem.
Źródło:
World Scientific News; 2016, 42; 101-118
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
In silico study by using ProTox-II webserver for oral acute toxicity, organ toxicity, immunotoxicity, genetic toxicity endpoints, nuclear receptor signalling and stress response pathways of synthetic pyrethroids
Autorzy:
Ghosh, Subhasis
Tripathi, Puja
Talukdar, Partha
Talapatra, Soumendra Nath
Powiązania:
https://bibliotekanauki.pl/articles/1065392.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
In silico study
Molecular mechanism of toxicity
Nuclear receptor signalling and stress response pathways
Predictive toxicology
Synthetic pyrethroids
Opis:
Till date, it is well-known that synthetic pyrethroids are safe to mammal but toxic to non-mammals. The present objective was an in silico study to detect oral acute toxicity, organ toxicity, immunotoxicity, genetic toxicity endpoints, nuclear receptor signalling, and stress response pathways of common synthetic pyrethroids by using ProTox-II webserver. The chemical compounds especially different synthetic pyrethroids such as pyrethrin I, Cinerin I and Jasmolin I (esters of Chrysanthemic acid), Pyrethrin-II, Cinerin II and Jasmolin II (Esters of Pyrethric acid), type I pyrethroids (esters without alpha-cyano group) such as allethrin, resmethrin, permethrin and bifenthrin and type II pyrethroids (esters with alpha-cyano group) such as fenvalerate, cyhalothrin, cypermethrin and deltamethrinwere selected from available literature. ProTox-II webserver was used for toxicological assessment in organism, organs, cell and gene level along with molecular mechanisms of toxicity. The predictive results for the toxicity of common synthetic pyrethroids compounds, Deltamethrin showed highly toxic compound among 14 compounds as fatal if swallowed as class II followed by Cypermethrin, Cyhalothrin, Bifenthrin, Resmethrin, Fenvalerate and Permethrin but hepatotoxic potential was only Deltamethrin and Fenvalerate while immunotoxic was obtained Permethrin. On the other hand, none of the compounds were obtained cytotoxic and carcinogenic but 9 compounds viz. Pyrethrin I, II Cinerin I, II, Jasmolin I, II, Allethrin, Resmethrin and Permethrin were observed mutagenic active. In case of NR signalling pathways, all compounds were inactive but eight compounds such as Pyrethrin I, II, Cinerin I, II, Jasmolin I, II, Allethrin and Resmethrin were obtained nrf2/ARE and HSE active while MMP active compounds were obtained Fenvalerate, Cyhalothrin and Deltamethrin respectively. For p53 and ATAD5 parameters, all fourteen compounds such as were obtained inactive. In conclusion, the present predictive results are suitable for academician, researchers, industries, etc. those who are making drugs and environmental chemicals. This web server helps faster screening of large numbers of compounds within short duration and no animal testing. This present in silico study easily detects toxin(s), which can be validated in future through in vitro and in vivo experimental assay.
Źródło:
World Scientific News; 2019, 132; 35-51
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
QSAR modeling for prediction of acute toxicity and mutagenicity in different test models by established common phytochemicals present in Phyllanthus niruri
Autorzy:
Dhar, Shrinjana
Gupta, Kaushik
Talapatra, Soumendra Nath
Powiązania:
https://bibliotekanauki.pl/articles/1192089.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
QSAR modeling
Common phytochemicals
Phyllanthus niruri
T.E.S.T. software
Predictive toxicity and mutagenicity
Opis:
In globe, Pyllanthus niruri is a well-established medicinal herb studied by many researchers, grown widely in many parts of West Bengal. The present study was aimed to predict the acute toxicity as LC50 in Daphnia magna and Pimephales promelas and rat oral LD50 value as well as Ames mutagenicity by using QSAR modeling software, T.E.S.T. (Toxicity Estimation Software Tool) for commonly found phytochemicals in Pyllanthus niruri. In present works, the data were obtained for LC50, few phytochemicals were toxic to D. magna and P. promelas and also mutagenic but rat oral LD50 determined less toxic. The present QSAR modeling work is suggesting that more researches should be required through experimental as well as predictive study with other prescribed software to know the mechanisms of toxicity and mutagenicity for these combined form of phytochemicals after separating each natural chemical from extract prior to drugs development for therapeutic usage.
Źródło:
World Scientific News; 2016, 37; 202-219
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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