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Karzi V, Ozcagli E, Tzatzarakis MN, Vakonaki E, Fragkiadoulaki I, Kalliantasi A, Chalkiadaki C, Alegakis A, Stivaktakis P, Karzi A, Makrigiannakis A, Docea AO, Calina D, Tsatsakis A. DNA Damage Estimation after Chronic and Combined Exposure to Endocrine Disruptors: An In Vivo Real-Life Risk Simulation Approach. Int J Mol Sci 2023; 24:9989. [PMID: 37373136 DOI: 10.3390/ijms24129989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 06/07/2023] [Accepted: 06/08/2023] [Indexed: 06/29/2023] Open
Abstract
Exposure to chemical substances has always been a matter of concern for the scientific community. During the last few years, researchers have been focusing on studying the effects resulting from combined exposure to different substances. In this study, we aimed to determine the DNA damage caused after chronic and combined exposure to substances characterized as endocrine disruptors using comet and micronuclei assays, specifically glyphosate (pure and commercial form), bisphenol A, parabens (methyl-, propyl- and butylparaben), triclosan and bis (2-ethylhexyl) phthalate. The highest mean tail intensity was observed in the group exposed to a high-dose (10 × ADI) mixture of substances (Group 3), with a mean value of 11.97 (11.26-13.90), while statistically significant differences were noticed between the groups exposed to low-dose (1 × ADI) (Group 2) and high-dose (10 × ADI) (Group 3) mixtures of substances (p = 0.003), and between Group 3 and both groups exposed to high doses (10 × ADI) of the pure and commercial forms of glyphosate (Groups 4 (p = 0.014) and 5 (p = 0.007)). The micronuclei assay results were moderately correlated with the exposure period. Group 5 was the most impacted exposure group at all sampling times, with mean MN counts ranging between 28.75 ± 1.71 and 60.75 ± 1.71, followed by Group 3 (18.25 ± 1.50-45.75 ± 1.71), showing that commercial forms of glyphosate additives as well as mixtures of endocrine disruptors can enhance MN formation. All exposure groups showed statistically significant differences in micronuclei counts with an increasing time trend.
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Affiliation(s)
- Vasiliki Karzi
- Laboratory of Toxicology, Medicine School, University of Crete, 70013 Heraklion, Greece
| | - Eren Ozcagli
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Istanbul University, Beyazıt, Istanbul 34116, Turkey
| | - Manolis N Tzatzarakis
- Laboratory of Toxicology, Medicine School, University of Crete, 70013 Heraklion, Greece
| | - Elena Vakonaki
- Laboratory of Toxicology, Medicine School, University of Crete, 70013 Heraklion, Greece
| | - Irene Fragkiadoulaki
- Laboratory of Toxicology, Medicine School, University of Crete, 70013 Heraklion, Greece
| | | | - Christina Chalkiadaki
- Laboratory of Toxicology, Medicine School, University of Crete, 70013 Heraklion, Greece
| | - Athanasios Alegakis
- Laboratory of Toxicology, Medicine School, University of Crete, 70013 Heraklion, Greece
| | | | - Aikaterini Karzi
- Laboratory of Toxicology, Medicine School, University of Crete, 70013 Heraklion, Greece
| | - Antonios Makrigiannakis
- Department of Obstetrics and Gynecology, University Hospital of Heraklion, 71500 Heraklion, Greece
| | - Anca Oana Docea
- Department of Clinical Pharmacy, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Daniela Calina
- Department of Toxicology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Aristidis Tsatsakis
- Laboratory of Toxicology, Medicine School, University of Crete, 70013 Heraklion, Greece
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Gagliardi S, Morasso C, Stivaktakis P, Pandini C, Tinelli V, Tsatsakis A, Prosperi D, Hickey M, Corsi F, Cereda C. Curcumin Formulations and Trials: What's New in Neurological Diseases. Molecules 2020; 25:molecules25225389. [PMID: 33217959 PMCID: PMC7698610 DOI: 10.3390/molecules25225389] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 11/12/2020] [Accepted: 11/15/2020] [Indexed: 02/07/2023] Open
Abstract
Curcumin’s pharmacological properties and its possible benefits for neurological diseases and dementia have been much debated. In vitro experiments show that curcumin modulates several key physiological pathways of importance for neurology. However, in vivo studies have not always matched expectations. Thus, improved formulations of curcumin are emerging as powerful tools in overcoming the bioavailability and stability limitations of curcumin. New studies in animal models and recent double-blinded, placebo-controlled clinical trials using some of these new formulations are finally beginning to show that curcumin could be used for the treatment of cognitive decline. Ultimately, this work could ease the burden caused by a group of diseases that are becoming a global emergency because of the unprecedented growth in the number of people aged 65 and over worldwide. In this review, we discuss curcumin’s main mechanisms of action and also data from in vivo experiments on the effects of curcumin on cognitive decline.
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Affiliation(s)
- Stella Gagliardi
- Genomic and Post Genomic Unit, IRCCS Mondino Foundation, 27100 Pavia, Italy; (S.G.); (C.P.)
| | - Carlo Morasso
- Istituti Clinici Scientifici Maugeri IRCCS, 27100 Pavia, Italy; (C.M.); (V.T.); (D.P.); (F.C.)
| | | | - Cecilia Pandini
- Genomic and Post Genomic Unit, IRCCS Mondino Foundation, 27100 Pavia, Italy; (S.G.); (C.P.)
- Department of Biology and Biotechnology “L. Spallanzani”, University of Pavia, 27100 Pavia, Italy
| | - Veronica Tinelli
- Istituti Clinici Scientifici Maugeri IRCCS, 27100 Pavia, Italy; (C.M.); (V.T.); (D.P.); (F.C.)
| | - Aristides Tsatsakis
- Medical School, University of Crete, 70013 Heraklion, Greece; (P.S.); (A.T.)
| | - Davide Prosperi
- Istituti Clinici Scientifici Maugeri IRCCS, 27100 Pavia, Italy; (C.M.); (V.T.); (D.P.); (F.C.)
- NanoBioLab, Dipartimento di Biotecnologie e Bioscienze, Università di Milano-Bicocca, 20126 Milano, Italy
| | - Miriam Hickey
- Department of Pharmacology, Institute of Biomedicine and Translational Medicine, University of Tartu, 50411 Tartu, Estonia;
| | - Fabio Corsi
- Istituti Clinici Scientifici Maugeri IRCCS, 27100 Pavia, Italy; (C.M.); (V.T.); (D.P.); (F.C.)
- Department of Biomedical and Clinical Sciences “Luigi Sacco”, University of Milan, 20157 Milano, Italy
| | - Cristina Cereda
- Genomic and Post Genomic Unit, IRCCS Mondino Foundation, 27100 Pavia, Italy; (S.G.); (C.P.)
- Correspondence: ; Tel.: +39-0382380348
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Berdiaki A, Perisynaki E, Stratidakis A, Kulikov PP, Kuskov AN, Stivaktakis P, Henrich-Noack P, Luss AL, Shtilman MM, Tzanakakis GN, Tsatsakis A, Nikitovic D. Assessment of Amphiphilic Poly- N-vinylpyrrolidone Nanoparticles' Biocompatibility with Endothelial Cells in Vitro and Delivery of an Anti-Inflammatory Drug. Mol Pharm 2020; 17:4212-4225. [PMID: 32986447 DOI: 10.1021/acs.molpharmaceut.0c00667] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Nanoparticles (NPs) produced from amphiphilic derivatives of poly-N-vinylpyrrolidone (Amph-PVP), composed of various molecular weight polymeric hydrophilic fragments linked into hydrophobic n-alkyl chains of varying lengths, were previously shown to exert excellent biocompatibility. Although routes of administration can be different, finally, most nanosystems enter the blood circulation or lymphatic vessels, and by this, they establish direct contact with endothelial cells. In this study, Amph-PVP NPs and fluorescently labeled Amph-PVP-based NPs, namely "PVP" NPs (Amph-PVP-NPs (6000 Da) unloaded) and "F"-NPs (Amph-PVP-NPs (6000 Da) loaded with fluorescent FITC), were synthesized to study Amph-PVP NPs interactions with HMEC-1 endothelial cells. PVP NPs were readily uptaken by HMEC-1 cells in a concentration-dependent manner, as demonstrated by immunofluorescence imaging. Upon uptake, the FITC dye was localized to the perinuclear region and cytoplasm of treated cells. The generation of lipopolysaccharide (LPS)-induced activated endothelium model revealed an increased uptake of PVPNPs, as shown by confocal microscopy. Both unloaded PVP NPs and F-NPs did not affect EC viability in the 0.01 to 0.066 mg/mL range. Furthermore, we focused on the potential immunological activation of HMEC-1 endothelial cells upon PVPNPs treatment by assessing the expression of their E-Selectin, ICAM-1, and VCAM-1 adhesion receptors. None of the adhesion molecules were affected by NP treatments of both activated by LPS and nonactivated HMEC-1 cells, at the utilized concentrations (p = NS). In this study, PVP (6000 Da) NPs were used to encapsulate indomethacin, a widely used anti-inflammatory drug. The synthesized drug carrier complex did not affect HMEC-1 cell growth and expression of E-selectin, ICAM-1, and VCAM-1 adhesion receptors. In summary, PVP-based NPs are safe for use on both basal and activated endothelium, which more accurately mimics pathological conditions. Amph-PVP NPs are a promising drug delivery system.
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Affiliation(s)
- Aikaterini Berdiaki
- Laboratory of Histology-Embryology, School of Medicine, University of Crete, Voutes, 71003 Heraklion, Greece
| | - Emmanouela Perisynaki
- Laboratory of Histology-Embryology, School of Medicine, University of Crete, Voutes, 71003 Heraklion, Greece
| | - Antonios Stratidakis
- Institute for Advanced Study (IUSS), Environmental Health Engineering, Piazzadella Vittoria 15, 27100 Pavia, Italy.,Laboratory of Toxicology, School of Medicine, University of Crete, 71003 Heraklion, Greece
| | - Pavel P Kulikov
- Department of Biomaterials, D. Mendeleev University of Chemical Technology of Russia, Miusskaya Square 9, Moscow 125047, Russian Federation.,Centre for Strategic Planning of FMBA of Russia, Moscow 119121, Russia
| | - Andrey N Kuskov
- Department of Biomaterials, D. Mendeleev University of Chemical Technology of Russia, Miusskaya Square 9, Moscow 125047, Russian Federation
| | | | - Petra Henrich-Noack
- Clinic of Neurology with Institute of Translational Neurology, University Clinic Muenster, 48149 Muenster, Germany
| | - Anna L Luss
- Department of Biomaterials, D. Mendeleev University of Chemical Technology of Russia, Miusskaya Square 9, Moscow 125047, Russian Federation
| | - Mikhail M Shtilman
- Department of Biomaterials, D. Mendeleev University of Chemical Technology of Russia, Miusskaya Square 9, Moscow 125047, Russian Federation
| | - George N Tzanakakis
- Laboratory of Histology-Embryology, School of Medicine, University of Crete, Voutes, 71003 Heraklion, Greece.,Laboratory of Anatomy, School of Medicine, University of Crete, 71003 Heraklion, Greece
| | - Aristidis Tsatsakis
- Laboratory of Toxicology, School of Medicine, University of Crete, 71003 Heraklion, Greece.,Department of Biomaterials, D. Mendeleev University of Chemical Technology of Russia, Miusskaya Square 9, Moscow 125047, Russian Federation
| | - Dragana Nikitovic
- Laboratory of Histology-Embryology, School of Medicine, University of Crete, Voutes, 71003 Heraklion, Greece
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Ilyushina NA, Egorova OV, Masaltsev GV, Averianova NS, Revazova YA, Rakitskii VN, Goumenou M, Vardavas A, Stivaktakis P, Tsatsakis A. Genotoxicity of mixture of imidacloprid, imazalil and tebuconazole. Toxicol Rep 2020; 7:1090-1094. [PMID: 32953461 PMCID: PMC7484519 DOI: 10.1016/j.toxrep.2020.08.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 06/26/2020] [Accepted: 08/11/2020] [Indexed: 11/24/2022] Open
Abstract
Imidacloprid, imazalil, tebuconazole were non-genotoxic separately. The mixture of imidacloprid + imazalil + tebuconazole was negative in Ames test. The mixture induced a statistically significant increase in MN-PCEs in bone marrow. The effect observed in vivo is probably mediated by synergism of TGAIs.
Genotoxicity of the mixture of generic pesticides imidacloprid + imazalil + tebuconazole in a ratio of 14.0/1.7/1.0 by weight was assessed using Ames test (Salmonella typhimurium) and micronucleus test in vivo on mammalian bone marrow erythrocytes (CD-1 mice) supporting the data creation for the Real Life Risk Simulation (RLRS) approach. This pesticides’ combination is used in the commercial formulation for seed treatment in advance of or immediately before sowing. Tested pesticides’ technical grade active ingredients (TGAIs) showed no evidence of genotoxicity upon separate treatments. In combination, the three pesticides demonstrated negative results in the Ames test but induced a statistically significant, dose-depended increase in MN-PCEs in mice bone marrow at doses lower than those used separately. The observed effect may be mediated by the synergistic action of the tested TGAIs, their metabolites or impurities.
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Affiliation(s)
- Nataliya A Ilyushina
- The Federal Budgetary Establishment of Science "Federal Scientific Center of Hygiene named after F. F. Erisman" of the Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 2 Semashko street, Mytishchi, Moscow Region, 141014, Russian Federation
| | - Olga V Egorova
- The Federal Budgetary Establishment of Science "Federal Scientific Center of Hygiene named after F. F. Erisman" of the Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 2 Semashko street, Mytishchi, Moscow Region, 141014, Russian Federation
| | - Gleb V Masaltsev
- The Federal Budgetary Establishment of Science "Federal Scientific Center of Hygiene named after F. F. Erisman" of the Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 2 Semashko street, Mytishchi, Moscow Region, 141014, Russian Federation
| | - Nataliya S Averianova
- The Federal Budgetary Establishment of Science "Federal Scientific Center of Hygiene named after F. F. Erisman" of the Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 2 Semashko street, Mytishchi, Moscow Region, 141014, Russian Federation
| | - Yulia A Revazova
- The Federal Budgetary Establishment of Science "Federal Scientific Center of Hygiene named after F. F. Erisman" of the Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 2 Semashko street, Mytishchi, Moscow Region, 141014, Russian Federation
| | - Valerii N Rakitskii
- The Federal Budgetary Establishment of Science "Federal Scientific Center of Hygiene named after F. F. Erisman" of the Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, 2 Semashko street, Mytishchi, Moscow Region, 141014, Russian Federation
| | - Marina Goumenou
- Centre of Toxicology Science & Research, Medical School, University of Crete, Heraklion, Crete, Greece
| | - Alexander Vardavas
- Centre of Toxicology Science & Research, Medical School, University of Crete, Heraklion, Crete, Greece
| | - Polychronis Stivaktakis
- Centre of Toxicology Science & Research, Medical School, University of Crete, Heraklion, Crete, Greece
| | - Aristidis Tsatsakis
- Centre of Toxicology Science & Research, Medical School, University of Crete, Heraklion, Crete, Greece
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Tzatzarakis M, Kokkinakis M, Renieri E, Goumenou M, Kavvalakis M, Vakonaki E, Chatzinikolaou A, Stivaktakis P, Tsakiris I, Rizos A, Tsatsakis A. Multiresidue analysis of insecticides and fungicides in apples from the Greek market. Applying an alternative approach for risk assessment. Food Chem Toxicol 2020; 140:111262. [DOI: 10.1016/j.fct.2020.111262] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/11/2020] [Accepted: 03/12/2020] [Indexed: 01/21/2023]
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6
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Girvalaki C, Tzatzarakis M, Vardavas A, Kyriakos CN, Nikitara K, Stivaktakis P, Tsatsakis A, Vardavas C. Discrepancies in reported versus measured nicotine content of e-cigarette refill liquids across nine European countries before and after the implementation of the EU Tobacco Products Directive. Eur Respir J 2020; 55:13993003.00941-2019. [PMID: 31699845 DOI: 10.1183/13993003.00941-2019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 10/26/2019] [Indexed: 11/05/2022]
Affiliation(s)
- Charis Girvalaki
- Laboratory of Toxicology, Faculty of Medicine, University of Crete, Heraklion, Greece
| | - Manolis Tzatzarakis
- Laboratory of Toxicology, Faculty of Medicine, University of Crete, Heraklion, Greece
| | - Alexander Vardavas
- Laboratory of Toxicology, Faculty of Medicine, University of Crete, Heraklion, Greece
| | - Christina N Kyriakos
- Laboratory of Toxicology, Faculty of Medicine, University of Crete, Heraklion, Greece
| | - Katerina Nikitara
- Laboratory of Toxicology, Faculty of Medicine, University of Crete, Heraklion, Greece
| | | | - Aristidis Tsatsakis
- Laboratory of Toxicology, Faculty of Medicine, University of Crete, Heraklion, Greece
| | - Constantine Vardavas
- Laboratory of Toxicology, Faculty of Medicine, University of Crete, Heraklion, Greece
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Mamoulakis C, Fragkiadoulaki I, Karkala P, Georgiadis G, Zisis IE, Stivaktakis P, Kalogeraki A, Tsiaoussis I, Burykina T, Lazopoulos G, Tsarouhas K, Kouretas D, Tsatsakis A. Contrast-induced nephropathy in an animal model: Evaluation of novel biomarkers in blood and tissue samples. Toxicol Rep 2019; 6:395-400. [PMID: 31080747 PMCID: PMC6506864 DOI: 10.1016/j.toxrep.2019.04.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 04/19/2019] [Accepted: 04/28/2019] [Indexed: 12/26/2022] Open
Abstract
Identification of novel biomarkers of contrast-induced nephropathy (CIN) that may more accurately detect renal function changes; reflect kidney damage; assist monitoring; and elucidate pathophysiology attract considerable scientific attention nowadays. To evaluate novel biomarkers of nephrotoxicity in blood/tissue samples of a CIN model, 10 New Zealand white rabbits were divided into group 1 (n = 5; iopromide) and group 2 (n = 5; control). Blood was drawn at 0 h (immediately), 24 h and 48 h after contrast medium (CM) administration. Animals were euthanized at 48 h and kidneys were removed. Serum creatinine (sCr)/symmetric-asymmetric dimethylarginine (SDMA-ADMA) levels were measured. CM genotoxic/cytotoxic effect was investigated 48 h post-CM exposure using micronucleus assay in lymphocytes. Cytological examination was conducted using touch preparation technique (TPT). All animals in group 1 developed CIN: mean sCr levels increased by 68.2% within 48 h. Significant SDMA-ADMA level elevation was observed at 0 h and 24 h with insignificant drop at 48 h in group 1, remaining normal in group 2 at all time-points. Significant increase in bi-nucleated cells with micronuclei and micronuclei frequency was detected in group 1. Cytokinesis block proliferation index was reduced insignificantly in group 1. TPT revealed degenerative lesions/inflammation, cell degeneration, abnormal uterine tubular casts and rubella in kidneys of all animals in group 1. Group 2 presented normal cells.
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Key Words
- ADMA, asymmetric dimethylarginine
- AKI, acute kidney injury
- ANOVA, analysis of variance
- ARRIVE, animal research: reporting of in vivo experiments
- AVMA, American Veterinary Medical Association
- Animal
- Asymmetric dimethylarginine
- BNMN, Bi-nucleated cells with micronuclei
- CBPI, cytokinesis block proliferation index
- CIN, contrast-induced nephropathy
- CKD, chronic kidney disease
- CM, contrast medium
- Contrast media
- ESI, electrospray ionization
- GFR, glomerular filtration rate
- Iopromide
- KIM-1, kidney injury molecule-1
- Kidney
- LC–MS, liquid chromatography mass spectrometry
- MN, micronuclei
- Models
- NGAL, meutrophil gelatinase–associated lipocalin
- NO, nitric oxide
- Nephropathy
- Nephrotoxicity
- OECD, Organisation for Economic Co-operation and Development
- RBF, renal blood flow
- ROS, reactive oxygen species
- SCR, serum creatinine
- SD, standard deviation
- SDMA, symmetric dimethylarginine
- Symmetric dimethylarginine
- TPT, touch preparation technique
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Affiliation(s)
- Charalampos Mamoulakis
- Department of Urology, University General Hospital of Heraklion, University of Crete, Medical School, Heraklion, Crete, Greece
| | - Irene Fragkiadoulaki
- Department of Urology, University General Hospital of Heraklion, University of Crete, Medical School, Heraklion, Crete, Greece
- Department of Forensic Sciences and Toxicology, Faculty of Medicine, University of Crete, Heraklion, 71003, Greece
| | - Phaedra Karkala
- Department of Forensic Sciences and Toxicology, Faculty of Medicine, University of Crete, Heraklion, 71003, Greece
| | - Georgios Georgiadis
- Department of Urology, University General Hospital of Heraklion, University of Crete, Medical School, Heraklion, Crete, Greece
| | - Ioannis-Erineos Zisis
- Department of Urology, University General Hospital of Heraklion, University of Crete, Medical School, Heraklion, Crete, Greece
- Department of Forensic Sciences and Toxicology, Faculty of Medicine, University of Crete, Heraklion, 71003, Greece
| | - Polychronis Stivaktakis
- Department of Forensic Sciences and Toxicology, Faculty of Medicine, University of Crete, Heraklion, 71003, Greece
| | - Alexandra Kalogeraki
- Department of Pathology-Cytopathology, University General Hospital of Heraklion, University of Crete, Medical School, Heraklion, Crete, Greece
| | - Ioannis Tsiaoussis
- Laboratory of Anatomy-Histology-Embryology, University of Crete, Medical School, Heraklion, Crete, Greece
| | - Tatyana Burykina
- Department of Analytical and Forensic Medical Toxicology, Sechenov University, 2-4 Bolshaya Pirogovskaya st., 119991, Moscow, Russia
| | - George Lazopoulos
- Department of Cardiothoracic Surgery, University General Hospital of Heraklion, University of Crete, Medical School, Heraklion, Crete, Greece
| | | | - Dimitrios Kouretas
- Department of Biochemistry and Biotechnology, University of Thessaly, 41500, Larissa, Greece
| | - Aristides Tsatsakis
- Department of Forensic Sciences and Toxicology, Faculty of Medicine, University of Crete, Heraklion, 71003, Greece
- Department of Analytical and Forensic Medical Toxicology, Sechenov University, 2-4 Bolshaya Pirogovskaya st., 119991, Moscow, Russia
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Girvalaki C, Tzatzarakis M, Vardavas A, Kyriakos C, Karzi V, Stivaktakis P, Tsatsakis A, Vardavas C. Flavors, additives and nicotine levels detected among the most popular e-cigarette refill liquids across 9 European countries after the implementation of Tobacco Products Directive (TPD). Tob Prev Cessat 2019. [DOI: 10.18332/tpc/105201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Girvalaki C, Tzatzarakis M, Kyriakos C, Vardavas A, Stivaktakis P, Kavvalakis M, Tsatsakis A, Vardavas C. Chemical analysis and hazard identification of the most common electronic cigarette liquids in nine European countries. Tob Induc Dis 2018. [DOI: 10.18332/tid/95141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Tzatzarakis M, Girvalaki C, Vardavas A, Stivaktakis P, Nosyrev A, Leon G, Tsatsakis A, Vardavas C. Evaluation of e-cigarette liquids on labelling, packaging and technical features prior the adoption of the Tobacco Products Directive (TPD) in multiple European countries. Toxicol Lett 2018. [DOI: 10.1016/j.toxlet.2018.06.1056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Tsatsakis A, Fragkiadoulaki I, Kalogeraki A, Tsiaoussis I, Karkala F, Kalliantasi K, Stivaktakis P, Fragkiadaki P, Psycharakis C, Mamoulakis C. Natural antioxidants prevent contrast-induced nephropathy in an animal model: Results from a cytological study. Toxicol Lett 2018. [DOI: 10.1016/j.toxlet.2018.06.1010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Taghizadehghalehjoughi A, Hacimuftuoglu A, Cetin M, Ugur AB, Galateanu B, Mezhuev Y, Okkay U, Taspinar N, Taspinar M, Uyanik A, Gundogdu B, Mohammadzadeh M, Nalci KA, Stivaktakis P, Tsatsakis A, Jung TW, Jeong JH, El-Aty AMA. Effect of metformin/irinotecan-loaded poly-lactic-co-glycolic acid nanoparticles on glioblastoma: in vitro and in vivo studies. Nanomedicine (Lond) 2018; 13:1595-1606. [DOI: 10.2217/nnm-2017-0386] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Aim: The present study was designed to evaluate the effects of irinotecan hydrochloride (IRI)- or metformin hydrochloride (MET)-loaded poly-lactic-co-glycolic acid (PLGA) nanoparticles (NPs) for the treatment of glioblastoma multiforme using in vitro neuron and U-87 MG glioblastoma cell cultures and in vivo animal model. Methods: The cytotoxic and neurotoxic effects of pure drugs, blank NPs and MET- and IRI-loaded PLGA NPs were investigated in vitro (using methylthiazolyldiphenyl-tetrazolium bromide assay) and in vivo (using Cavalieri's principle for estimation of cancer volume).Results: 1 and 2 mM doses of MET and MET-loaded PLGA NPs, respectively, significantly reduced the volume of extracted cancer. Conclusion: Consequently, MET- and IRI-loaded PLGA NPs may be a promising approach for the treatment of glioblastoma multiforme.
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Affiliation(s)
- Ali Taghizadehghalehjoughi
- Department of Pharmacology and Toxicology, Faculty of Veterinary Science, Atatürk University, 25240, Erzurum, Turkey
| | - Ahmet Hacimuftuoglu
- Department of Medical Pharmacology, Faculty of Medicine, Atatürk University, 25240, Erzurum, Turkey
| | - Meltem Cetin
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Atatürk University, 25240, Erzurum, Turkey
| | - Afife Busra Ugur
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Atatürk University, 25240, Erzurum, Turkey
| | - Bianca Galateanu
- Department of Biochemistry and Molecular Biology, 91-95 Splaiul Independentei, 050095, District 5, Bucharest, Romania
| | - Yaroslav Mezhuev
- Center of Biomaterials, D Mendeleev University of Chemical Technology of Russia, Miusskaya Sq. 9, 125047 Moscow, Russia
| | - Ufuk Okkay
- Department of Medical Pharmacology, Faculty of Medicine, Atatürk University, 25240, Erzurum, Turkey
| | - Numan Taspinar
- Department of Medical Pharmacology, Faculty of Medicine, Atatürk University, 25240, Erzurum, Turkey
| | - Mehmet Taspinar
- Department of Medical Biology, School of Medicine, Yuzuncu Yil University, Van, Turkey
| | - Abdullah Uyanik
- Department of Nephrology, Faculty of Medicine, Ataturk University, 25240, Erzurum, Turkey
| | - Betul Gundogdu
- Department of Pathology, Faculty of Medicine, Ataturk University, 25240, Erzurum, Turkey
| | - Maryam Mohammadzadeh
- Department of Medical Pharmacology, Faculty of Medicine, Atatürk University, 25240, Erzurum, Turkey
| | - Kemal Alp Nalci
- Department of Medical Pharmacology, Faculty of Medicine, Atatürk University, 25240, Erzurum, Turkey
| | - Polychronis Stivaktakis
- Laboratory of Toxicology, School of Medicine, University of Crete, 71003, Heraklion, Greece
- Toxplus SA, University of Crete Spin-Off, 71601, Heraklion, Greece
| | - Aristidis Tsatsakis
- Laboratory of Toxicology, School of Medicine, University of Crete, 71003, Heraklion, Greece
- Toxplus SA, University of Crete Spin-Off, 71601, Heraklion, Greece
| | - Tae Woo Jung
- Research Administration Team, Seoul National University Bundang Hospital, Gyeonggi, Republic of Korea
| | - Ji Hoon Jeong
- Department of Pharmacology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - AM Abd El-Aty
- Department of Medical Pharmacology, Faculty of Medicine, Atatürk University, 25240, Erzurum, Turkey
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt
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13
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Girvalaki C, Tzatzarakis M, Vardavas AI, Stivaktakis P, Kyriakos C, Papadakis S, Tsatsakis A, Vardavas C. What is the content of the electronic cigarette liquids according to their flavor? An evaluation in nine European Union countries before TPD implementation. Tob Prev Cessat 2018. [DOI: 10.18332/tpc/90466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Girvalaki C, Vardavas A, Tzatzarakis M, Stivaktakis P, Tsatsakis A, Behrakis P, Vardavas C. Classification, labelling and packaging of the most popular e-cigarette refill liquids across 9 European countries. Tob Induc Dis 2018. [DOI: 10.18332/tid/84616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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15
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Fragiadoulaki I, Tsitsimpikou C, Vakonaki E, Alegakis A, Kaloudis K, Kanaki K, Nathena D, Stivaktakis P, Tzatzarakis M, Mamoulakis C, Tsatsakis A. Contrast-induced nephropathy in animal model. Toxicol Lett 2017. [DOI: 10.1016/j.toxlet.2017.07.392] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Tzatzarakis M, Vardavas A, Girvalaki C, Stivaktakis P, Vardavas C, Tsatsakis A. Flavors and additives detected among the most popular e-cigarette refill liquids across 9 European countries. Toxicol Lett 2017. [DOI: 10.1016/j.toxlet.2017.08.065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Vardavas A, Tzatzarakis M, Stivaktakis P, Fragkiadaki P, Alegakis A, Tsiaoussis J, Tsitsimpikou C, Carvalho F, Tsatsakis A. Aldehyde oxidase metabolism route inhibition via sodium tungstate in imidacloprid exposed rabbits. Toxicol Lett 2017. [DOI: 10.1016/j.toxlet.2017.07.701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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18
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Kalogeraki A, Stivaktakis P, Docea A, Calina D, Gofita E, Arsene AL, Nikitovic D, Tzardi M, Tsatsakis A. Evaluation of long term low dose exposure to mixtures on the lymphocytes of the peripheral blood of rats. Toxicol Lett 2017. [DOI: 10.1016/j.toxlet.2017.07.349] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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19
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Vardavas C, Tzatzarakis M, Vardavas A, Girvalaki C, Stivaktakis P, Behrakis P, Tsatsakis AM. Differences in reported vs. Measured Nicotine Concentrations among the most popular e-cigarette refill liquids across 9 European Countries. Tob Prev Cessat 2017. [DOI: 10.18332/tpc/70328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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20
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Tsatsakis AM, Kouretas D, Tzatzarakis MN, Stivaktakis P, Tsarouhas K, Golokhvast KS, Rakitskii VN, Tutelyan VA, Hernandez AF, Rezaee R, Chung G, Fenga C, Engin AB, Neagu M, Arsene AL, Docea AO, Gofita E, Calina D, Taitzoglou I, Liesivuori J, Hayes AW, Gutnikov S, Tsitsimpikou C. Simulating real-life exposures to uncover possible risks to human health: A proposed consensus for a novel methodological approach. Hum Exp Toxicol 2016; 36:554-564. [PMID: 28539089 DOI: 10.1177/0960327116681652] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In real life, consumers are exposed to complex mixtures of chemicals via food, water and commercial products consumption. Since risk assessment usually focuses on individual compounds, the current regulatory approach doesn't assess the overall risk of chemicals present in a mixture. This study will evaluate the cumulative toxicity of mixtures of different classes of pesticides and mixtures of different classes of pesticides together with food additives (FAs) and common consumer product chemicals using realistic doses after long-term exposure. Groups of Sprague Dawley (CD-SD) rats (20 males and 20 females) will be treated with mixtures of pesticides or mixtures of pesticides together with FAs and common consumer product chemicals in 0.0, 0.25 × acceptable daily intake (ADI)/tolerable daily intake (TDI), ADI/TDI and 5 × ADI/TDI doses for 104 weeks. All animals will be examined every day for signs of morbidity and mortality. Clinical chemistry hematological parameters, serum hormone levels, biomarkers of oxidative stress, cardiotoxicity, genotoxicity, urinalysis and echocardiographic tests will be assessed periodically at 6 month intervals. At 3-month intervals, ophthalmological examination, test for sensory reactivity to different types of stimuli, together with assessment of learning abilities and memory performance of the adult and ageing animals will be conducted. After 24 months, animals will be necropsied, and internal organs will be histopathologically examined. If the hypothesis of an increased risk or a new hazard not currently identified from cumulative exposure to multiple chemicals was observed, this will provide further information to public authorities and research communities supporting the need of replacing current single-compound risk assessment by a more robust cumulative risk assessment paradigm.
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Affiliation(s)
- A M Tsatsakis
- 1 Center of Toxicology Science and Research, Medical School, University of Crete, Heraklion, Crete, Greece.,2 Scientific Educational Center of Nanotechnology, Far Eastern Federal University, Vladivostok, Russian Federation.,3 Federal Scientific Center of Hygiene, F.F. Erisman, Moscow, Russian Federation
| | - D Kouretas
- 4 Department of Biochemistry and Biotechnology, University of Thessaly, Larissa, Greece
| | - M N Tzatzarakis
- 1 Center of Toxicology Science and Research, Medical School, University of Crete, Heraklion, Crete, Greece
| | - P Stivaktakis
- 1 Center of Toxicology Science and Research, Medical School, University of Crete, Heraklion, Crete, Greece
| | - K Tsarouhas
- 5 Department of Cardiology, University Hospital of Larissa, Thessaly Prefecture, Larissa, Greece
| | - K S Golokhvast
- 2 Scientific Educational Center of Nanotechnology, Far Eastern Federal University, Vladivostok, Russian Federation
| | - V N Rakitskii
- 3 Federal Scientific Center of Hygiene, F.F. Erisman, Moscow, Russian Federation
| | - V A Tutelyan
- 6 Federal Research Center of Nutrition, Biotechnology and Food Safety, Moscow, Russian Federation
| | - A F Hernandez
- 7 Department of Legal Medicine and Toxicology, University of Granada School of Medicine, Granada, Spain
| | - R Rezaee
- 8 Department of Physiology and Pharmacology, School of Medicine, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | - G Chung
- 9 Department of Biotechnology, Chonnam National University, Yeosu, Chonnam, Korea
| | - C Fenga
- 10 Department of Occupational Medicine, University of Messina, Messina, Italy
| | - A B Engin
- 11 Department of Toxicology, Faculty of Pharmacy, Gazi University, Ankara, Turkey
| | - M Neagu
- 12 Department of Immunology , Victor Babes National Institute of Pathology, Bucharest, Romania
| | - A L Arsene
- 13 Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - A O Docea
- 14 Department of Toxicology, Faculty of Pharmacy, University of Medicine and Pharmacy, Craiova, Romania
| | - E Gofita
- 14 Department of Toxicology, Faculty of Pharmacy, University of Medicine and Pharmacy, Craiova, Romania
| | - D Calina
- 15 Department of Clinical Pharmacology, Faculty of Pharmacy, University of Medicine and Pharmacy, Craiova, Romania
| | - I Taitzoglou
- 16 Department of Physiology, Faculty of Veterinary Medicine, School of Health Sciences, Aristotle University, Thessaloniki, Greece
| | - J Liesivuori
- 17 Department of Pharmacology, Drug Development and Therapeutics, University of Turku, Turku, Finland
| | - A W Hayes
- 18 Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, USA.,19 Environmental Health, Harvard University, Cambridge, MA USA
| | - S Gutnikov
- 20 School of Natural Sciences, Far Eastern Federal University, Vladivostok, Russian Federation
| | - C Tsitsimpikou
- 21 Department of Hazardous Substances, Mixtures and Articles, Directorate of Energy, Industrial and Chemical Products, General Chemical State Laboratory of Greece, Athens, Greece
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21
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Tzatzarakis MN, Karzi V, Vakonaki E, Goumenou M, Kavvalakis M, Stivaktakis P, Tsitsimpikou C, Tsakiris I, Rizos AK, Tsatsakis AM. Bisphenol A in soft drinks and canned foods and data evaluation. Food Addit Contam Part B Surveill 2016; 10:85-90. [PMID: 27897085 DOI: 10.1080/19393210.2016.1266522] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Bisphenol A (BPA) is one of the most common industrial chemicals and known to exert endocrine disruption activity. The aim of this study was the quantification of BPA in food stuffs on the Greek market. The applied liquid chromatography-mass spectrometry method was validated for linearity, limit of quantification, accuracy, precision and recovery. About 41.7% of the canned solid phase samples, 25.0% of the canned liquid phase samples and 43.8% of the soft drinks were positive. Mean BPA concentrations (range) were 33.4 ± 4.4 ng/g (4.90 ± 0.64-66.0 ± 8.6 ng/g) in canned solid phase, 2.70 ± 0.08 ng/ml (1.90 ± 0.06-3.50 ± 0.11 ng/ml) in canned liquid phase and 2.30 ± 0.18 ng/ml (0.40 ± 0.03-10.2 ± 0.8 ng/ml) in soft drinks. The results of this study are comparable with those reported in the literature according to which higher concentrations of BPA were detected in the solid fraction of canned food compared to their liquid fraction.
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Affiliation(s)
- Manolis N Tzatzarakis
- a Laboratory of Toxicology, Medical School , University of Crete , Heraklion , Greece
| | - Vasiliki Karzi
- a Laboratory of Toxicology, Medical School , University of Crete , Heraklion , Greece.,b Department of Chemistry , University of Crete and Foundation for Research and Technology-Hellas (FORTH-IESL) , Heraklion , Greece
| | - Elena Vakonaki
- a Laboratory of Toxicology, Medical School , University of Crete , Heraklion , Greece
| | - Marina Goumenou
- c Pesticides Department , European Food Safety Authority , Parma , Italy
| | - Matthaios Kavvalakis
- a Laboratory of Toxicology, Medical School , University of Crete , Heraklion , Greece
| | | | - Christina Tsitsimpikou
- d National Helpdesk for REACH and CLP , General Chemical State Laboratory of Greece , Athens , Greece
| | - Ioannis Tsakiris
- e Department of Agricultural Technology, School of Agriculture Technology, Food Technology and Nutrition , TEI of Western Macedonia , Florina , Greece
| | - Apostolos K Rizos
- b Department of Chemistry , University of Crete and Foundation for Research and Technology-Hellas (FORTH-IESL) , Heraklion , Greece
| | - Aristidis M Tsatsakis
- a Laboratory of Toxicology, Medical School , University of Crete , Heraklion , Greece
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22
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Kavvalakis M, Tzatzarakis M, Stivaktakis P, Alegakis A, Christakis-Hampsas M, Kokkinakis M, Babatsikou F, Rakitskiy V, Hayes W, Tsatsakis A. Biomonitoring of pyrethroid exposure among rural and urban populations in Crete, Greece using hair analysis. Toxicol Lett 2015. [DOI: 10.1016/j.toxlet.2015.08.401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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23
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Tzatzarakis M, Vakonaki E, Kavvalakis M, Stivaktakis P, Heretis I, Barbounis E, Vardavas A, Barmpas M, Tsatsakis A. Development and validation of an LC–APCI-MS method for the determination of bisphenol A in hair samples of Greek population. Toxicol Lett 2014. [DOI: 10.1016/j.toxlet.2014.06.761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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24
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Tsakiris I, Tzatzarakis M, Alegakis A, Mitlianga P, Kavvalakis M, Vakonaki E, Goumenou M, Stivaktakis P, Tsatsakis A. Monitoring of pesticides residues in Greek bottled wine. Toxicol Lett 2014. [DOI: 10.1016/j.toxlet.2014.06.628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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25
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Kavvalakis M, Tzatzarakis M, Stivaktakis P, Bariotaki A, Tsakalof A, Vardavas A, Babatsikou F, Vynias D, Tsatsakis A. Imidacloprid and 6-chloronicotinic acid determination in blood serum of long-term exposed rabbits using LC–APCI-MS technique. Toxicol Lett 2014. [DOI: 10.1016/j.toxlet.2014.06.760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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26
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Stivaktakis P, Kavvalakis M, Goutzourelas N, Stagos D, Tzatzarakis M, Kyriakakis M, Rezaee R, Kouretas D, Hayes W, Tsatsakis A. Evaluation of oxidative stress in long-term exposed rabbits to subtoxic levels of imidacloprid. Toxicol Lett 2014. [DOI: 10.1016/j.toxlet.2014.06.764] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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27
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Stivaktakis P, Maravgakis G, Kavvalakis M, Tzatzarakis M, Alegakis A, Theodoropoulou E, Kokkinakis M, Liesivuori J, Tsatsakis A. Micronucleus assay in rabbits: A genotoxicity study of sub-acute levels of imidacloprid. Toxicol Lett 2012. [DOI: 10.1016/j.toxlet.2012.03.263] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Misailidi M, Tzatzarakis M, Stivaktakis P, Koutedakis Y, Tsatsakis A, Flouris A. Development of questionnaires for the assessment of environmental tobacco smoke exposure in children and adults: Validity against hair nicotine. Toxicol Lett 2011. [DOI: 10.1016/j.toxlet.2011.05.471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Stivaktakis P, Vlastos D, Giannakopoulos E, Matthopoulos DP. Differential micronuclei induction in human lymphocyte cultures by imidacloprid in the presence of potassium nitrate. ScientificWorldJournal 2010; 10:80-9. [PMID: 20062955 PMCID: PMC5763811 DOI: 10.1100/tsw.2010.9] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Humans are exposed to pesticides as a consequence of their application in farming or their persistence in a variety of media, including food, water, air, soil, plants, animals, and smoke. The interaction of pesticides with environmental factors may result in the alteration of their physicochemical properties. Square wave cathodic stripping voltammetry (SW-CSV), a technique that simulates electrodynamically the cellular membrane, is used to investigate whether the presence of potassium nitrate (KNO(3)) in the culture medium interferes with the genotoxic behavior of imidacloprid. The cytokinesis block micronuclei (CBMN) method is used to evaluate imidacloprid's genotoxicity in the absence or presence of KNO(3) in the culture medium and, as a consequence, its adsorption by lymphocytes. Comparing micronuclei (MN) frequencies in control and imidacloprid-treated blood cell cultures, statistically significant differences were not detected. KNO(3) did not induce MN frequencies compared to control. Statistically significant differences in MN frequencies were observed when blood cell cultures were treated with imidacloprid in the presence of increasing concentrations of KNO(3). SW-CSV revealed that by increasing KNO(3) molarity, imidacloprid's concentration in the culture medium decreased in parallel. This finding indicates that imidacloprid is adsorbed by cellular membranes. The present study suggests a novel role of a harmless environmental factor, such as KNO(3), on the genotoxic behavior of a pesticide, such as imidacloprid. KNO(3) rendered imidacloprid permeable to lymphocytes, resulting in elevated MN frequencies.
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Affiliation(s)
- Polychronis Stivaktakis
- Department of Environmental and Natural Resources Management, University of Ioannina, Agrinio, Greece.
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Giannakopoulos E, Stivaktakis P, Deligiannakis Y. Thermodynamics of adsorption of imidacloprid at constant charge hydrophobic surfaces: physicochemical aspects of bioenvironmental activity. Langmuir 2008; 24:3955-3959. [PMID: 18324861 DOI: 10.1021/la7037334] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Adsorption of the insecticide 1-(6-chloro-3-pyridylmethyl)-N-nitroimidazolidin-2-ylideneamine (Imidacloprid) on the hanging mercury drop electrode (HMDE) surface was studied by temperature-dependent stripping voltammetry (TD-SV). At near physiological pH, under reducing conditions, the Gibbs free energy of adsorption, DeltaGADS, shows two distinct temperature-dependent regimes. (a) At 0 degrees < T < 10 degrees C a temperature-independent mechanism occurs with a constant DeltaGADS = -40.5 kJ/mol, resulting in strong chemisorption at high surface coverage. For T < 10 degrees C a considerable enthalpy gain is estimated, and this represents the driving force for the adsorption of Imidacloprid onto the electrode surface. (b) At T > 10 degrees C a temperature-dependent mechanism is operative with DeltaGADS/DeltaT = -91.4 J/K mol, resulting in a rapid weakening of adsorption and low surface coverage. On the basis of the present findings we suggest that the strong chemisorption at T < 10 degrees C at physiological pH under reducing conditions is related to the high specific insecticide activity of Imidacloprid in cool-blooded insects as contrasted to its low efficiency in warm-blooded organisms.
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Affiliation(s)
- E Giannakopoulos
- Department of Environmental & Natural Resources Management, University of Ioannina, Seferi 2, Agrinio, Greece
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