Spectroscopic analyses and genotoxicity of dioxins in the aquatic environment of Alexandria

Abdel‐Gawad, Fagr Kh.; Osman, Osama; Bassem, Samah M.; Nassar, Hossam F.; Temraz, Tarek A.; Elhaes, Hanan; Ibrahim, Medhat

doi:10.1016/j.marpolbul.2017.12.056

Cited by 18 publications

(12 citation statements)

References 26 publications

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“…One of the leading techniques to investigate nanomaterials in different areas is molecular modeling. Such class of computational work is successfully providing physical, chemical and biological data about many systems and molecules in nanoscale [20][21][22][23][24][25]. The QSAR (Quantitative Structure Activity Relationships) approach is a computational tool that quantifies the relationship between a physicochemical property of a given structure and its biological activity [26].…”

Section: Introductionmentioning

confidence: 99%

Effect of nano metal oxides on heme molecule: molecular and biomolecular approaches

2019

Biointerface Res Appl Chem

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Interaction of components of living cells with various nanomaterials in the gas phase has been one of extensive concern since they become intensively utilized in various life aspects. This work is carried out to investigate the interaction between heme molecule, as the main component of hemoglobin, with several familiar and non-familiar divalent structures such as O2, CO2, CO, MgO, CoO, NiO, CuO and ZnO. Geometry optimization processes as well as QSAR descriptors are conducted using semiemprical quantum mechanical calculations at PM6 level. Results illustrate that adsorbing O2 and CO on heme lowers their TDM helping heme in performing its transportation function and not interacting with other species. On the other hand, when CoO and ZnO interacting with heme the TDM of the resultant structures increase greatly reflecting high reactivity which may interact with other species more than performing its function. Therefore, interacting species other than O2 may disturb the transportation function of heme structure. QSAR data of IP regarding interaction of O2 with heme ensure the TDM result that reflects lowering its activity. IP of H-CO adsorbed is the lowest indicating high reactivity while those of H-O2, H-CO2, H-MgO and H-NiO in the complex form are the highest values indicating that it is difficult to form a complex structure with them. Therefore, heme interactions with structures rather than O2 and CO2 affects negatively its function as gas transporter.

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Section: Introductionmentioning

confidence: 99%

Effect of nano metal oxides on heme molecule: molecular and biomolecular approaches

2019

Biointerface Res Appl Chem

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“…Recently, Molecular modeling with different levels of theories is applied for describing bio-materials and other several classes of biological systems [19][20][21][22][23][24]. In this context, molecular modeling along with molecular spectroscopic methods are utilized together to understand several systems including CS [25][26][27][28]. However, researches combining molecular and physicochemical characterization of silk corn are seldom.…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic and modeling analyses of bimolecular structure of corn silk

2019

Biointerface Res Appl Chem

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Corn silk (CS) is a protein/ cellulosic agricultural waste. Due to its documented beneficial medical applications; corn silk aqueous extract was greenly prepared. FTIR spectroscopic analyses are conducted for three fractions of CS, then a model is prepared to simulate CS molecular structure. Based on FTIR analyses, a model is described as composite of dehydrated alanine unit lignin unit and two cellulose units with metal oxides namely MgO and CuO. Some important descriptors were calculated with Quantitative structure–activity relationship QSAR calculations. Then quantum mechanical calculations were conducted. Molecular modeling data indicated the CS applicability for several biomedical applications due to its active sites proved by electrostatic potential. The results confirmed the suitability of CS as promising tool for many biological applications.

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“…The coastal waters of Alexandria received extensive discharges of untreated agricultural, industrial and sewage wastewaters in the last four decades. It was found that 183x106 m 3 of untreated domestic sewage in addition to wastewaters were discharged annually from land-based sources to Alexandria coastal waters (Abdel-Gawad et al, 2015;Abdel-Gawad et al, 2018). It is well known that heavy metals pollution and accumulation becomes a major problem around the world due to many reasons; the toxicity, non-biodegradable properties, abundant sources in addition to their accumulative behaviour (Bartiromo et al, 2013;Abdel-Gawad et al, 2015;Adel et al, 2018).…”

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confidence: 99%

“…The GST isoenzymes could be induced by different pollutants and many studies reported increased hepatic activity after exposure to toxic chemicals (see for review, Perez-Lopez et al, 2002). Based on previous studies it was stated that GST induction is considered to be adopted as a biomarker for exposure to different pollutants; PAHs, PCBs and Dioxins (Abdel-Gawad et al, 2014;Abdel-Gawad et al, 2015;Abdel-Gawad et al, 2018). Although the activity of GST was determined in diverse tissues, detection of GST is preferred to be performed on tissues of high biotransformation activity.…”

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confidence: 99%

“…The most valuable tissues for GST determination are liver tissues of vertebrates, the hepatopancreas and digestive gland in invertebrates, besides fish gills which considered the primary line of defence against water pollutants (Hylland et al, 2006). Recently, comet assay is known as a simple, rapid, reliable and standard technique for measuring DNA damage in fish exposed to different pollutants (Abdel-Gawad et al, 2011;Bhagat et al, 2016;Abdel et al, 2018). The comet assay is extensively used in genotoxicity evaluation of different substances; pharmaceuticals, agrochemical, food additives and industrial chemicals (Brendler-Schwaab et al, 2005;Guilherme et al, 2009).…”

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confidence: 99%

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Biological responses of white sea bream (Diplodus sargus, Linnaeus 1758) and sardine (Sardine pilchardus, Walbaum 1792) exposed to heavy metal contaminated water

Guerriero

Abdel‐Gawad

2018

Emir J Food Agric

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The aim of the present work was to assess, by rapid approach, the detoxification capacity and the genotoxicity caused by exposure of some marine fish to polluted waters. The fish species selected for the study: white sea bream (Diplodus sargus, Linnaeus 1758) and sardine (Sardine pilchardus, Walbaum 1792) were collected from different sites of Alexandria, El-Max bay and Bahary, in Egypt. Results of heavy metals analysis in sediment were: Al>Fe>Cr>Pb>Hg>Cd. Concerning detoxification analysis, fish collected from El-Max bay encounter the highest liver enzyme activity of Glutathione S-Transferase. Also, genotoxicity was evaluated in liver, gills and muscle of fishes collected and the results indicated that fish collected from El-Max bay has the highest levels of comets (DNA damage) when compared to the other sites selected as reference. It can be concluded from our results that the different tissues examined have alteration of level of detossification and comets as result of different degree of oxidative pollution insult. These biological responses may be considered for rapid extimation of food oxidative damage as well as for environmental quality.

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Spectroscopic analyses and genotoxicity of dioxins in the aquatic environment of Alexandria

Cited by 18 publications

References 26 publications

Effect of nano metal oxides on heme molecule: molecular and biomolecular approaches

Effect of nano metal oxides on heme molecule: molecular and biomolecular approaches

Spectroscopic and modeling analyses of bimolecular structure of corn silk

Biological responses of white sea bream (Diplodus sargus, Linnaeus 1758) and sardine (Sardine pilchardus, Walbaum 1792) exposed to heavy metal contaminated water

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