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Babonaitė M, Čepulis M, Kazlauskaitė J, Lazutka JR. Evaluation of In Vitro Genotoxicity of Polystyrene Nanoparticles in Human Peripheral Blood Mononuclear Cells. Toxics 2023; 11:627. [PMID: 37505592 PMCID: PMC10384665 DOI: 10.3390/toxics11070627] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/11/2023] [Accepted: 07/18/2023] [Indexed: 07/29/2023]
Abstract
According to the trade association PlasticEurope, global plastics production increased to 390.7 million tons in 2021. Unfortunately, the majority of produced plastics eventually end up as waste in the ocean or on land. Since synthetic plastics are not fully biodegradable, they tend to persist in natural environments and transform into micro- and nanoplastic particles due to fragmentation. The presence of nanoplastics in air, water, and food causes ecotoxicological issues and leads to human exposure. One of the main concerns is their genotoxic potential. Therefore, this study aimed to evaluate the internalization rates, cytotoxicity, and genotoxicity of polystyrene nanoparticles (PS-NPs) in human peripheral blood mononuclear cells (PBMCs) in vitro. The uptake of PS-NPs was confirmed with flow cytometry light scattering analysis. None of the tested nanoparticle concentrations had a cytotoxic effect on human PBMCs, as evaluated by a dual ethidium bromide/acridine orange staining technique. However, an alkaline comet assay results revealed a significant increase in the levels of primary DNA damage after 24 h of exposure to PS-NPs in a dose-dependent manner. Moreover, all tested PS-NPs concentrations induced a significant amount of micronucleated cells, as well. The results of this study revealed the genotoxic potential of commercially manufactured polystyrene nanoparticles and highlighted the need for more studies with naturally occurring plastic NPs.
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Affiliation(s)
- Milda Babonaitė
- Department of Botany and Genetics, Institute of Biosciences, Vilnius University, 7 Sauletekis Av., LT-10257 Vilnius, Lithuania
| | - Matas Čepulis
- Department of Botany and Genetics, Institute of Biosciences, Vilnius University, 7 Sauletekis Av., LT-10257 Vilnius, Lithuania
| | - Jūratė Kazlauskaitė
- Department of Botany and Genetics, Institute of Biosciences, Vilnius University, 7 Sauletekis Av., LT-10257 Vilnius, Lithuania
| | - Juozas Rimantas Lazutka
- Department of Botany and Genetics, Institute of Biosciences, Vilnius University, 7 Sauletekis Av., LT-10257 Vilnius, Lithuania
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Vaicekauskaitė I, Sabaliauskaitė R, Lazutka JR, Jarmalaitė S. The Emerging Role of Chromatin Remodeling Complexes in Ovarian Cancer. Int J Mol Sci 2022; 23:ijms232213670. [PMID: 36430148 PMCID: PMC9697406 DOI: 10.3390/ijms232213670] [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] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 10/31/2022] [Accepted: 11/05/2022] [Indexed: 11/09/2022] Open
Abstract
Ovarian cancer (OC) is the fifth leading cause of women's death from cancers. The high mortality rate is attributed to the late presence of the disease and the lack of modern diagnostic tools, including molecular biomarkers. Moreover, OC is a highly heterogeneous disease, which contributes to early treatment failure. Thus, exploring OC molecular mechanisms could significantly enhance our understanding of the disease and provide new treatment options. Chromatin remodeling complexes (CRCs) are ATP-dependent molecular machines responsible for chromatin reorganization and involved in many DNA-related processes, including transcriptional regulation, replication, and reparation. Dysregulation of chromatin remodeling machinery may be related to cancer development and chemoresistance in OC. Some forms of OC and other gynecologic diseases have been associated with mutations in specific CRC genes. Most notably, ARID1A in endometriosis-related OC, SMARCA4, and SMARCB1 in hypercalcemic type small cell ovarian carcinoma (SCCOHT), ACTL6A, CHRAC1, RSF1 amplification in high-grade serous OC. Here we review the available literature on CRCs' involvement in OC to improve our understanding of its development and investigate CRCs as possible biomarkers and treatment targets for OC.
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Affiliation(s)
- Ieva Vaicekauskaitė
- Laboratory of Genetic Diagnostic, National Cancer Institute, Santariškių 1, LT-08406 Vilnius, Lithuania
- Institute of Biosciences, Vilnius University, Sauletekio Avenue 7, LT-10222 Vilnius, Lithuania
| | - Rasa Sabaliauskaitė
- Laboratory of Genetic Diagnostic, National Cancer Institute, Santariškių 1, LT-08406 Vilnius, Lithuania
| | - Juozas Rimantas Lazutka
- Institute of Biosciences, Vilnius University, Sauletekio Avenue 7, LT-10222 Vilnius, Lithuania
| | - Sonata Jarmalaitė
- Institute of Biosciences, Vilnius University, Sauletekio Avenue 7, LT-10222 Vilnius, Lithuania
- Laboratory of Clinical Oncology, National Cancer Institute, Santariškių 1, LT-08406 Vilnius, Lithuania
- Correspondence:
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Kavaliauskaitė J, Kazlauskaitė A, Lazutka JR, Mozolevskis G, Stirkė A. Pulsed Electric Fields Alter Expression of NF-κB Promoter-Controlled Gene. Int J Mol Sci 2021; 23:ijms23010451. [PMID: 35008875 PMCID: PMC8745616 DOI: 10.3390/ijms23010451] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 12/19/2021] [Accepted: 12/29/2021] [Indexed: 11/16/2022] Open
Abstract
The possibility to artificially adjust and fine-tune gene expression is one of the key milestones in bioengineering, synthetic biology, and advanced medicine. Since the effects of proteins or other transgene products depend on the dosage, controlled gene expression is required for any applications, where even slight fluctuations of the transgene product impact its function or other critical cell parameters. In this context, physical techniques demonstrate optimistic perspectives, and pulsed electric field technology is a potential candidate for a noninvasive, biophysical gene regulator, exploiting an easily adjustable pulse generating device. We exposed mammalian cells, transfected with a NF-κB pathway-controlled transcription system, to a range of microsecond-duration pulsed electric field parameters. To prevent toxicity, we used protocols that would generate relatively mild physical stimulation. The present study, for the first time, proves the principle that microsecond-duration pulsed electric fields can alter single-gene expression in plasmid context in mammalian cells without significant damage to cell integrity or viability. Gene expression might be upregulated or downregulated depending on the cell line and parameters applied. This noninvasive, ligand-, cofactor-, nanoparticle-free approach enables easily controlled direct electrostimulation of the construct carrying the gene of interest; the discovery may contribute towards the path of simplification of the complexity of physical systems in gene regulation and create further synergies between electronics, synthetic biology, and medicine.
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Affiliation(s)
- Justina Kavaliauskaitė
- Laboratory of Bioelectrics, Center for Physical Sciences and Technology, Sauletekio Ave. 3, LT-10257 Vilnius, Lithuania; (J.K.); (A.K.)
- Department of Botany and Genetics, Institute of Biosciences, Life Sciences Center, Vilnius University, Sauletekio Ave. 7, LT-10222 Vilnius, Lithuania;
| | - Auksė Kazlauskaitė
- Laboratory of Bioelectrics, Center for Physical Sciences and Technology, Sauletekio Ave. 3, LT-10257 Vilnius, Lithuania; (J.K.); (A.K.)
- Department of Botany and Genetics, Institute of Biosciences, Life Sciences Center, Vilnius University, Sauletekio Ave. 7, LT-10222 Vilnius, Lithuania;
| | - Juozas Rimantas Lazutka
- Department of Botany and Genetics, Institute of Biosciences, Life Sciences Center, Vilnius University, Sauletekio Ave. 7, LT-10222 Vilnius, Lithuania;
| | - Gatis Mozolevskis
- Laboratory of Prototyping of Electronic and Photonic Devices, Institute of Solid State Physics, University of Latvia, Kengaraga Str. 8, LV-1063 Riga, Latvia;
| | - Arūnas Stirkė
- Laboratory of Bioelectrics, Center for Physical Sciences and Technology, Sauletekio Ave. 3, LT-10257 Vilnius, Lithuania; (J.K.); (A.K.)
- Laboratory of Prototyping of Electronic and Photonic Devices, Institute of Solid State Physics, University of Latvia, Kengaraga Str. 8, LV-1063 Riga, Latvia;
- Correspondence:
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Daniunaite K, Bakavicius A, Zukauskaite K, Rauluseviciute I, Lazutka JR, Ulys A, Jankevicius F, Jarmalaite S. Promoter Methylation of PRKCB, ADAMTS12, and NAALAD2 Is Specific to Prostate Cancer and Predicts Biochemical Disease Recurrence. Int J Mol Sci 2021; 22:ijms22116091. [PMID: 34198725 PMCID: PMC8201120 DOI: 10.3390/ijms22116091] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/28/2021] [Accepted: 06/01/2021] [Indexed: 01/19/2023] Open
Abstract
The molecular diversity of prostate cancer (PCa) has been demonstrated by recent genome-wide studies, proposing a significant number of different molecular markers. However, only a few of them have been transferred into clinical practice so far. The present study aimed to identify and validate novel DNA methylation biomarkers for PCa diagnosis and prognosis. Microarray-based methylome data of well-characterized cancerous and noncancerous prostate tissue (NPT) pairs was used for the initial screening. Ten protein-coding genes were selected for validation in a set of 151 PCa, 51 NPT, as well as 17 benign prostatic hyperplasia samples. The Prostate Cancer Dataset (PRAD) of The Cancer Genome Atlas (TCGA) was utilized for independent validation of our findings. Methylation frequencies of ADAMTS12, CCDC181, FILIP1L, NAALAD2, PRKCB, and ZMIZ1 were up to 91% in our study. PCa specific methylation of ADAMTS12, CCDC181, NAALAD2, and PRKCB was demonstrated by qualitative and quantitative means (all p < 0.05). In agreement with PRAD, promoter methylation of these four genes was associated with the transcript down-regulation in the Lithuanian cohort (all p < 0.05). Methylation of ADAMTS12, NAALAD2, and PRKCB was independently predictive for biochemical disease recurrence, while NAALAD2 and PRKCB increased the prognostic power of multivariate models (all p < 0.01). The present study identified methylation of ADAMTS12, NAALAD2, and PRKCB as novel diagnostic and prognostic PCa biomarkers that might guide treatment decisions in clinical practice.
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Affiliation(s)
- Kristina Daniunaite
- Life Sciences Center, Institute of Biosciences, Vilnius University, 10257 Vilnius, Lithuania; (K.D.); (I.R.); (J.R.L.)
| | - Arnas Bakavicius
- National Cancer Institute, 08660 Vilnius, Lithuania; (A.B.); (K.Z.); (A.U.); (F.J.)
- Centre of Urology, Vilnius University Hospital Santaros Klinikos, 08661 Vilnius, Lithuania
- Faculty of Medicine, Vilnius University, 03101 Vilnius, Lithuania
| | - Kristina Zukauskaite
- National Cancer Institute, 08660 Vilnius, Lithuania; (A.B.); (K.Z.); (A.U.); (F.J.)
| | - Ieva Rauluseviciute
- Life Sciences Center, Institute of Biosciences, Vilnius University, 10257 Vilnius, Lithuania; (K.D.); (I.R.); (J.R.L.)
| | - Juozas Rimantas Lazutka
- Life Sciences Center, Institute of Biosciences, Vilnius University, 10257 Vilnius, Lithuania; (K.D.); (I.R.); (J.R.L.)
| | - Albertas Ulys
- National Cancer Institute, 08660 Vilnius, Lithuania; (A.B.); (K.Z.); (A.U.); (F.J.)
| | - Feliksas Jankevicius
- National Cancer Institute, 08660 Vilnius, Lithuania; (A.B.); (K.Z.); (A.U.); (F.J.)
- Centre of Urology, Vilnius University Hospital Santaros Klinikos, 08661 Vilnius, Lithuania
- Faculty of Medicine, Vilnius University, 03101 Vilnius, Lithuania
| | - Sonata Jarmalaite
- Life Sciences Center, Institute of Biosciences, Vilnius University, 10257 Vilnius, Lithuania; (K.D.); (I.R.); (J.R.L.)
- National Cancer Institute, 08660 Vilnius, Lithuania; (A.B.); (K.Z.); (A.U.); (F.J.)
- Correspondence: ; Tel.: +370-5-2190901; Fax: +370-5-2720164
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Slapšytė G, Dedonytė V, Adomėnienė A, Lazutka JR, Kazlauskaitė J, Ragažinskienė O, Venskutonis PR. Genotoxic properties of Betonica officinalis, Gratiola officinalis, Vincetoxicum luteum and Vincetoxicum hirundinaria extracts. Food Chem Toxicol 2019; 134:110815. [PMID: 31520668 DOI: 10.1016/j.fct.2019.110815] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 05/28/2019] [Revised: 09/07/2019] [Accepted: 09/09/2019] [Indexed: 01/15/2023]
Abstract
Genotoxicity of B. officinalis, G. officinalis, V. luteum and V. hirundinaria extracts, which demonstrated strong antioxidant capacity, was tested using chromosome aberration, sister chromatid exchange (SCE), cytokinesis-block micronucleus and alkaline single-cell gel electrophoresis (comet) assays in human lymphocytes in vitro and Ames Salmonella/microsome test. All tested extracts were not mutagenic in S. typhimurium strains TA98 and TA100 with and without metabolic activation and did not induce chromosome aberrations in human lymphocytes in vitro. Extract from G. officinalis was the only one, which induced significant increase in micronuclei, indicating possible aneugenic effect. All investigated plant extracts induced DNA damage evaluated by the comet assay, while B. officinalis and V. luteum extracts induced slight increase in SCE values. The determined variation in response might be due to the plant extract tested and donor susceptibility.
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Affiliation(s)
- Gražina Slapšytė
- Institute of Biosciences, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Veronika Dedonytė
- Institute of Biosciences, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Aušra Adomėnienė
- Department of Food Science and Technology, Kaunas University of Technology, Kaunas, Lithuania
| | | | - Jūratė Kazlauskaitė
- Institute of Biosciences, Life Sciences Center, Vilnius University, Vilnius, Lithuania
| | - Ona Ragažinskienė
- Kaunas Botanical Garden, Vytautas Magnus University, Kaunas, Lithuania
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Pukalskienė M, Slapšytė G, Dedonytė V, Lazutka JR, Mierauskienė J, Venskutonis PR. Genotoxicity and antioxidant activity of five Agrimonia and Filipendula species plant extracts evaluated by comet and micronucleus assays in human lymphocytes and Ames Salmonella/microsome test. Food Chem Toxicol 2018; 113:303-313. [DOI: 10.1016/j.fct.2017.12.031] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 12/14/2017] [Accepted: 12/16/2017] [Indexed: 12/01/2022]
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Daniunaite K, Dubikaityte M, Gibas P, Bakavicius A, Rimantas Lazutka J, Ulys A, Jankevicius F, Jarmalaite S. Clinical significance of miRNA host gene promoter methylation in prostate cancer. Hum Mol Genet 2017; 26:2451-2461. [PMID: 28398479 DOI: 10.1093/hmg/ddx138] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Accepted: 04/04/2017] [Indexed: 11/13/2022] Open
Abstract
Only a part of prostate cancer (PCa) patients has aggressive malignancy requiring adjuvant treatment after radical prostatectomy (RP). Biomarkers capable to predict biochemical PCa recurrence (BCR) after RP would significantly improve preoperative risk stratification and treatment decisions. MicroRNA (miRNA) deregulation has recently emerged as an important phenomenon in tumor development and progression, however, the mechanisms remain largely unstudied. In the present study, based on microarray profiling of DNA methylation in 9 pairs of PCa and noncancerous prostate tissues (NPT), host genes of miR-155-5p, miR-152-3p, miR-137, miR-31-5p, and miR-642a, -b were analyzed for promoter methylation in 129 PCa, 35 NPT, and 17 benign prostatic hyperplasia samples (BPH) and compared to the expression of mature miRNAs and their selected targets (DNMT1, KDM1A, and KDM5B). The Cancer Genome Atlas dataset was utilized for validation. Methylation of mir-155, mir-152, and mir-137 host genes was PCa-specific, and downregulation of miR-155-5p significantly correlated with promoter methylation. Higher KDM5B expression was observed in samples with methylated mir-155 or mir-137 promoters, whereas upregulation of KDM1A and DNMT1 was associated with mir-155 and mir-152 methylation status, respectively. Promoter methylation of mir-155, mir-152, and mir-31 was predictive of BCR-free survival in various Cox models and increased the prognostic value of clinicopathologic factors. In conclusion, methylated mir-155, mir-152, mir-137, and mir-31 host genes are promising diagnostic and/or prognostic biomarkers of PCa. Methylation status of particular miRNA host genes as independent variables or in combinations might assist physicians in identifying poor prognosis PCa patients preoperatively.
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Affiliation(s)
- Kristina Daniunaite
- Institute of Biosciences, Life Sciences Centre, Vilnius University, Vilnius LT-10257, Lithuania
| | - Monika Dubikaityte
- Institute of Biosciences, Life Sciences Centre, Vilnius University, Vilnius LT-10257, Lithuania
| | - Povilas Gibas
- Department of Biological DNA Modification, Institute of Biotechnology, Life Sciences Centre, Vilnius University, Vilnius LT-10257, Lithuania
| | - Arnas Bakavicius
- National Cancer Institute, Vilnius LT-08660.,Urology Centre, Vilnius University, Vilnius LT-08661, Lithuania
| | - Juozas Rimantas Lazutka
- Institute of Biosciences, Life Sciences Centre, Vilnius University, Vilnius LT-10257, Lithuania
| | | | - Feliksas Jankevicius
- National Cancer Institute, Vilnius LT-08660.,Faculty of Medicine, Vilnius University, Vilnius LT-03101, Lithuania
| | - Sonata Jarmalaite
- Institute of Biosciences, Life Sciences Centre, Vilnius University, Vilnius LT-10257, Lithuania.,National Cancer Institute, Vilnius LT-08660
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Demidenko R, Razanauskas D, Daniunaite K, Lazutka JR, Jankevicius F, Jarmalaite S. Frequent down-regulation of ABC transporter genes in prostate cancer. BMC Cancer 2015; 15:683. [PMID: 26459268 PMCID: PMC4603841 DOI: 10.1186/s12885-015-1689-8] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 10/07/2015] [Indexed: 12/18/2022] Open
Abstract
Background ATP-binding cassette (ABC) transporters are transmembrane proteins responsible for the efflux of a wide variety of substrates, including steroid metabolites, through the cellular membranes. For better characterization of the role of ABC transporters in prostate cancer (PCa) development, the profile of ABC transporter gene expression was analyzed in PCa and noncancerous prostate tissues (NPT). Methods TaqMan Low Density Array (TLDA) human ABC transporter plates were used for the gene expression profiling in 10 PCa and 6 NPT specimens. ABCB1 transcript level was evaluated in a larger set of PCa cases (N = 78) and NPT (N = 15) by real-time PCR, the same PCa cases were assessed for the gene promoter hypermethylation by methylation-specific PCR. Results Expression of eight ABC transporter genes (ABCA8, ABCB1, ABCC6, ABCC9, ABCC10, ABCD2, ABCG2, and ABCG4) was significantly down-regulated in PCa as compared to NPT, and only two genes (ABCC4 and ABCG1) were up-regulated. Down-regulation of ABC transporter genes was prevalent in the TMPRSS2-ERG-negative cases. A detailed analysis of ABCB1 expression confirmed TLDA results: a reduced level of the transcript was identified in PCa in comparison to NPT (p = 0.048). Moreover, the TMPRSS2-ERG-negative PCa cases showed significantly lower expression of ABCB1 in comparison to NPT (p = 0.003) or the fusion-positive tumors (p = 0.002). Promoter methylation of ABCB1 predominantly occurred in PCa and was rarely detected in NPT (p < 0.001). Conclusions The study suggests frequent down-regulation of the ABC transporter genes in PCa, especially in the TMPRSS2-ERG-negative tumors. Electronic supplementary material The online version of this article (doi:10.1186/s12885-015-1689-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Rita Demidenko
- Division of Human Genome Research Centre, Faculty of Nature Sci., Vilnius University, Ciurlionio 21, Vilnius, LT-03101, Lithuania.
| | - Deividas Razanauskas
- Division of Human Genome Research Centre, Faculty of Nature Sci., Vilnius University, Ciurlionio 21, Vilnius, LT-03101, Lithuania.
| | - Kristina Daniunaite
- Division of Human Genome Research Centre, Faculty of Nature Sci., Vilnius University, Ciurlionio 21, Vilnius, LT-03101, Lithuania.
| | - Juozas Rimantas Lazutka
- Division of Human Genome Research Centre, Faculty of Nature Sci., Vilnius University, Ciurlionio 21, Vilnius, LT-03101, Lithuania.
| | - Feliksas Jankevicius
- Faculty of Medicine, Vilnius University, Ciurlionio 21, Vilnius, LT-03101, Lithuania. .,Urology Centre, Vilnius University, Santariskiu 2, Vilnius, LT-08661, Lithuania.
| | - Sonata Jarmalaite
- Division of Human Genome Research Centre, Faculty of Nature Sci., Vilnius University, Ciurlionio 21, Vilnius, LT-03101, Lithuania.
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Dedonyté V, Domza B, Lazutka JR, Lekevicius RK. Sister chromatid exchanges and lymphocyte hyperdiploidy in women with a history of reproductive wastage. Hereditas 2008; 114:277-9. [PMID: 1960103 DOI: 10.1111/j.1601-5223.1991.tb00335.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Affiliation(s)
- V Dedonyté
- Ecological Genetics Laboratory, Vilnius University, Lithuania
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Jarmalaite S, Mierauskiene J, Beitas K, Ranceva J, Lazutka JR, Butrimiene I. Sister chromatid exchanges and cell proliferative abilities in cultured peripheral blood lymphocytes of patients with rheumatoid and reactive arthritis. Clin Exp Rheumatol 2006; 24:677-82. [PMID: 17207384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
OBJECTIVE Analysis of cytogenetic alterations in peripheral blood lymphocytes (PBL) of patients with acute and chronic reactive arthritis (AcReA and ChrReA) and rheumatoid arthritis (RA). METHODS The frequencies of sister chromatid exchanges (SCE) and cell proliferative abilities were analysed in PBL from 69 patients with arthritis and 30 healthy controls. The analyses were done on metaphase chromosomes from PBL grown in cell culture for 72 hours. Cytogenetic parameters were compared among study groups and correlations with different clinical, immune and demographic characteristics were analysed. RESULTS No significant increases in the frequencies of SCE were detected in PBL from patients with AcReA, ChrReA and RA as compared to controls. However, marked impairment of cell proliferative abilities was detected in cultured lymphocytes from patients with arthritis as compared to healthy controls. Significant associations between measures of disease activity and proliferative abilities of PBL were established. Parameters of lymphocyte proliferation were also influenced by concentration of anti-inflammatory cytokine interleukin-10 in the blood of patients. CONCLUSION No increased risk of genetic alterations as measured by the rate of SCE was found in patients with RA and ReA. It is most likely that impaired proliferative abilities of peripheral blood lymphocytes are related to disease activity and could reflect systemic changes in cytokines production and intracellular signal transduction.
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Affiliation(s)
- S Jarmalaite
- Laboratory of Ecological Genetics, Vilnius University, Lithuania
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Abstract
The incidence of chromosome aberrations (CAs) was investigated in cultured lymphocytes of 109 styrene-, formaldehyde-, and phenol-exposed workers in comparison with 64 controls. There was a marked increase in the incidence of the structural chromosome aberrations in the first mitotic division metaphases of occupationally exposed workers (3.59 +/- 0.26 CAs/100 cells vs 1.47 +/- 0.14 in controls (P < 0.01). 22 occupationally-exposed workers were selected for the trial including 1-month administration of a drug Aevitum (100,000 U of retinol palmitate plus 0.1 g of alpha-tocopherol acetate dissolved in 0.2 ml of oil) at a daily dose of 1-2 capsules for 5 days a week. The frequency of chromosome aberrations before, after the administration of a cumulative Aevitum dose of 2.0, 4.0 and 8.0 ml, and 6 weeks after the cessation of vitamin intake was 5.68 +/- 0.63, 4.33 +/- 0.45, 2.67 +/- 0.34, 2.00 +/- 0.25, and 2.64 +/- 0.21 per 100 cells, respectively. Thus, Aevitum was found to cause a significant decrease in occupationally-induced chromosome damage in human lymphocytes.
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Affiliation(s)
- J Mierauskiene
- Ecological Genetics Laboratory, Vilnius University, Lithuania
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Slapsyte G, Jankauskiene A, Mierauskiene J, Lazutka JR. Cytogenetic analysis of peripheral blood lymphocytes of children treated with nitrofurantoin for recurrent urinary tract infection. Mutagenesis 2002; 17:31-5. [PMID: 11752231 DOI: 10.1093/mutage/17.1.31] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The objective of this study was to determine whether nitrofurantoin, used for long-term antimicrobial prophylaxis of urinary tract infection, may induce chromosome aberrations (CAs) and sister chromatid exchanges (SCEs) in lymphocytes of treated children. Ninety-nine blood samples were taken from 69 children aged from 0.2 to 13 years and suffering from urinary tract infection. The treatment consisted of oral administration of nitrofurantoin at doses of 5-8 mg/kg/day for the first 7 days and at doses of 1-2 mg/kg/day for the rest of the treatment period. Blood was sampled before the start of the nitrofurantoin therapy and after 1, 3, 6 and 12 months of the therapy. Analysis of variance showed no statistically significant increase in CA and SCE frequencies in lymphocytes of children treated with nitrofurantoin for 1-12 months. However, a significant increase in SCE rates was determined in lymphocytes of those patients whose blood samples were available both before and after treatment with nitrofurantoin (6.21 +/- 0.28 and 7.30 +/- 0.39 SCE/cell, respectively, P = 0.0315, Student's paired t-test). Moreover, there was a statistically significant correlation (r = 0.6603, P = 0.0270) between cumulative dose of nitrofurantoin and SCE frequency in lymphocytes of children after 1 month of the therapy. Also, in vitro experiments indicated that nitrofurantoin was able to induce both CAs and SCEs in human lymphocytes. Positive findings with chromosome aberrations and SCEs in vitro and suggestive results with SCEs in vivo indicate that further, much larger follow-up studies are needed to elucidate the genetic safety of the therapeutic use of nitrofurantoin.
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Affiliation(s)
- G Slapsyte
- Department of Botany and Genetics, Vilnius University, 21 Cuirlionis Street, 2009 Vilnius, Lithuania.
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Lazutka JR, Mierauskiene J, Slapsyte G, Dedonyte V. Genotoxicity of dill (Anethum graveolens L.), peppermint (Menthaxpiperita L.) and pine (Pinus sylvestris L.) essential oils in human lymphocytes and Drosophila melanogaster. Food Chem Toxicol 2001; 39:485-92. [PMID: 11313115 DOI: 10.1016/s0278-6915(00)00157-5] [Citation(s) in RCA: 85] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Genotoxic properties of the essential oils extracted from dill (Anethum graveolens L.) herb and seeds, peppermint (Menthaxpiperita L.) herb and pine (Pinus sylvestris L.) needles were studied using chromosome aberration (CA) and sister chromatid exchange (SCE) tests in human lymphocytes in vitro, and Drosophila melanogaster somatic mutation and recombination test (SMART) in vivo. In the CA test, the most active essential oil was from dill seeds, then followed essential oils from dill herb, peppermint herb and pine needles, respectively. In the SCE test, the most active essential oils were from dill herb and seeds followed by essential oils from pine needles and peppermint herb. Essential oils from dill herb and seeds and pine needles induced CA and SCE in a clear dose-dependent manner, while peppermint essential oil induced SCE in a dose-independent manner. All essential oils were cytotoxic for human lymphocytes. In the SMART test, a dose-dependent increase in mutation frequency was observed for essential oils from pine and dill herb. Peppermint essential oil induced mutations in a dose-independent manner. Essential oil from dill seeds was almost inactive in the SMART test.
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Affiliation(s)
- J R Lazutka
- Department of Botany and Genetics, Vilnius University, 21 Ciurlionis St, 2009, Vilnius, Lithuania.
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14
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Slapsyte G, Jankauskiene A, Mierauskiene J, Lazutka JR. Cytogenetic analysis of children under long-term antibacterial therapy with nitroheterocyclic compound furagin. Mutat Res 2001; 491:25-30. [PMID: 11287294 DOI: 10.1016/s1383-5718(01)00131-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Cytogenetic analysis of chromosome aberrations (CAs) and sister chromatid exchanges (SCEs) was performed in 109 blood samples from 95 pediatric patients with urinary tract infections (UTIs). Children were exposed to diagnostic levels of X-rays during voiding cystourethrography and subsequently treated for one to 12 months with low doses of furagin - N-(5-nitro-2-furyl)-allylidene-1-aminohydantoin. Furagin is 2-substituted 5-nitrofuran, chemically and structurally similar to well-known antibacterial compound nitrofurantoin. Increased frequencies of CAs were found in children undergoing voiding cystourethrography as compared with the unexposed, acentric fragments being the most frequent alteration (2.03 versus 0.88 per 100 cells, P=0.006). However, a significant decrease in the frequency of acentric fragments was determined with the time elapsed since X-ray examination was performed. A time-independent increase in SCE frequency was found in lymphocytes of children treated with furagin. Total CA frequency did not differ significantly between groups of children with various duration of furagin treatment. However, frequency of chromatid exchanges (triradials and quadriradials) increased significantly with duration of treatment.
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Affiliation(s)
- G Slapsyte
- Department of Botany and Genetics, Vilnius University, 21 Ciurlionis St., 2009, Vilnius, Lithuania.
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15
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Sabaliūnas D, Lazutka JR, Sabaliūniene I. Acute toxicity and genotoxicity of aquatic hydrophobic pollutants sampled with semipermeable membrane devices. Environ Pollut 2000; 109:251-265. [PMID: 15092896 DOI: 10.1016/s0269-7491(99)00259-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/1999] [Accepted: 09/14/1999] [Indexed: 05/24/2023]
Abstract
Triolein-filled semipermeable membrane devices (SPMDs) were deployed for 4 weeks in polluted water sources in Lithuania. The mixtures of pollutants sampled by the SPMDs were fractionated by size-exclusion chromatography (SEC). The fraction containing average molecular weight compounds such as polycyclic aromatic hydrocarbons (PAHs) and organochlorine pesticides was screened by gas chromatography and mass spectrometry. The whole (non-fractionated) samples and their SEC fractions were tested in bioassays including Microtox, Mutatox, Daphnia pulex immobilization assay and the sister chromatid exchange (SCE) in human lymphocytes in vitro test. The Microtox test was most sensitive with the estimated EC(50) values in the range of milligrams or even micrograms per milliliter based on the amount of the SPMD triolein. Part of the observed toxicity was caused by elemental sulfur co-sampled by the SPMDs from sediments. The sum of toxicity equivalents of the SEC fractions was smaller than the relative toxicity of the whole samples indicating the presence of synergistic interactions in the complex mixtures of chemical pollutants. The toxic or genotoxic response induced by the chemical mixtures and their fractions was smaller in the D. pulex, Mutatox and SCE tests. In Mutatox, a positive response was only detected without the S9 metabolic activation which indicates the presence of mainly direct-acting mutagens in the samples. Interpretation of the Mutatox data was difficult due to the complexity of dose-response and time-response relationships. The study has demonstrated the potential as well as some limitations of SPMDs in the monitoring of biological effects of bioavailable organic pollutants in the aquatic environment.
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16
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Lazutka JR, Lekevicius R, Dedonyte V, Maciuleviciute-Gervers L, Mierauskiene J, Rudaitiene S, Slapsyte G. Chromosomal aberrations and sister-chromatid exchanges in Lithuanian populations: effects of occupational and environmental exposures. Mutat Res 1999; 445:225-39. [PMID: 10575432 DOI: 10.1016/s1383-5718(99)00128-x] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Cytogenetic analysis of chromosomal aberrations (CA) in 175,229 cells from 1113 individuals, both unexposed and occupationally or environmentally exposed to heavy metals (mercury and lead), organic (styrene, formaldehyde, phenol and benzo(a)pyrene) and inorganic (sulfur and nitrogen oxides, hydrogen and ammonium fluorides) volatile substances and/or ionizing radiation was performed. In addition, 11,250 cells from 225 individuals were scored for the frequency of sister-chromatid exchanges (SCE). Increased frequencies of CA were found in all occupationally exposed groups. A principal difference between the exposure to heavy metals and organic substances was found: increase in the CA frequency was dependent on duration of exposure to mercury but not dependent on duration of exposure to styrene, formaldehyde and phenol. A higher CA incidence was found in lymphocytes of children living in the vicinity of a plant manufacturing phosphate fertilizers. This indicates that children are a sensitive study group for the assessment of environmental exposure. However, the results of SCE analysis in these children were inconclusive. Exposure to ionizing radiation was found to cause chromosome breaks and chromatid exchanges in Chernobyl clean-up workers and chromatid breaks, chromatid exchanges, dicentric chromosomes and chromosome translocations in workers from the Ignalina Nuclear Power Plant. The increased frequency of chromatid exchanges in individuals exposed to ionizing radiation was quite unexpected. This may be attributed to the action of some unrecognized life-style or occupational factors, or to be a result of radiation-induced genomic instability. Also an increased SCE frequency was found in lymphocytes of Chernobyl clean-up workers.
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Affiliation(s)
- J R Lazutka
- Department of Botany and Genetics, Vilnius University, Lithuania.
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17
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Abstract
Review of the literature shows that such cytokines as human interferons alpha and gamma, tumor necrosis factor alpha, epidermal growth factor and interleukin-2 may exhibit genotoxic properties in human peripheral blood lymphocyte cultures. For all above cytokines, except interleukin-2, parabolic-like relationship between the dose and the frequency of sister chromatid exchanges was found. Although the mechanisms of these genotoxic actions remain largely unknown, generation of free radicals or interaction with enzymes such as DNA topoisomerase II may be suspected. Human interferon alpha also may be considered as an antimutagenic compound in human cells. Human tumor necrosis factor alpha has been reported to enhance cytotoxicity and DNA fragmentation produced by DNA topoisomerase II-targeted anticancer drugs. At the same time, it has some radio- and chemoprotective properties in vitro and in vivo. Despite these facts, the question about genotoxicity of cytokines is not answered. Some problems must be resolved before receiving the final answer. First, much more cytokines must be tested for their genotoxic activity. Second, appropriate test-systems must be designed. Third, genotoxicity studies of cytokines must account for cytokine interaction in the cytokine network as well as for such cytokine-induced effects as cytotoxicity and apoptosis. Fourth, in each case, it is necessary to have experimental evidence that observed genotoxic effects were caused by cytokine under investigation and not by the other factors.
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Affiliation(s)
- J R Lazutka
- Department of Botany and Genetics, Vilnius University, Lithuania.
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18
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Lazutka JR, Neel JV, Major EO, Dedonyte V, Mierauskine J, Slapsyte G, Kesminiene A. High titers of antibodies to two human polyomaviruses, JCV and BKV, correlate with increased frequency of chromosomal damage in human lymphocytes. Cancer Lett 1996; 109:177-83. [PMID: 9020918 DOI: 10.1016/s0304-3835(96)04448-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Associations of antibody titers to the JC and BK human polyoma viruses and the frequency of chromosome aberrations (CA) in human peripheral blood lymphocytes were studied. Study group consisted of 33 workers occupationally exposed to low doses of ionizing radiation and 11 control persons. There were no statistically significant differences in the JC and BK virus titer values between two groups of donors. It was found that JC and BK virus titers explained approximately 6% of total inter-individual variation in CA frequency. Such factors as alcohol abuse, age and, in this special group, exposure to ionizing radiation explained an additional 53% of the total variation in CA frequency. In six clean-up workers and one control, rogue cell (cells with multiple chromosome-type aberrations) were found. The incidence of rogue cells correlated significantly with JC and BK virus titers as well as a history of recent acute respiratory disease.
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Affiliation(s)
- J R Lazutka
- Department of Botany and Genetics, Vilnius University, Lithuania, USA
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Abstract
A cytogenetic analysis was performed on peripheral blood lymphocytes from 183 Chernobyl clean-up workers and 27 control individuals. Increased frequencies of chromosome aberrations were associated with exposure to radiation at Chernobyl, alcohol abuse and a history of recent influenza infection. However, only approximately 20% of Chernobyl clean-up workers had an increased frequency of dicentric and ring chromosomes. At the same time, an increased frequency of acentric fragments in lymphocytes of clean-up workers was characteristic. The use of multivitamins as dietary supplement significantly decreased the frequency of chromosome aberrations, especially of chromatid breaks. Rogue cells were found in lymphocytes of 28 clean-up workers and 3 control individuals. The appearance of rogue cells was associated with a recent history of acute respiratory disease (presumably caused by adenoviral infection) and, probably, alcohol abuse. Dicentric chromosomes in rogue cells were distributed according to a negative binomial distribution. Occurrence of rogue cells due to a perturbation of cell cycle control and abnormal apoptosis is suggested.
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Affiliation(s)
- J R Lazutka
- Department of Botany and Genetics, Vilnius University, Lithuania
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Affiliation(s)
- J R Lazutka
- Department of Botany and Genetics, Vilnius University, Lithuania
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Abstract
Sister chromatid exchanges (SCEs) were analysed in lymphocytes from 12 control persons and 33 Chernobyl clean-up workers. The group of Chernobyl clean-up workers consisted of civilians who were forced to go to Chernobyl to clean up environmental contamination caused by Chernobyl disaster. On average, they received 0.13 (range 0.04-0.249) Gy of external irradiation before returning to home. Cytogenetic analyses were performed 6-8 years after the irradiation. Standard cytogenetic techniques were used. Mean SCE frequency was 7.45 +/- 0.69 SCE/cell in controls and 10.30 +/- 0.31 SCE/cell in clean-up workers (p < 0.05). Analysis of variance showed that exposure to radiation explained 19.6%, occupational exposure to various chemical substances, 11.9%, coffee consumption, 8.3%, smoking, 4.2%, interaction between smoking and coffee consumption, 3.6%, and alcohol abuse, 3.4% of total variation in SCE frequency. Effects of all above confounding factors were significant (p < 0.05). In addition, increased frequencies of chromosome aberrations due to exposure at Chernobyl and alcohol consumption were observed. However, there was no correlation between external dose of irradiation and the frequency of chromosome aberrations. Thus, even 6-8 years after the irradiation, cytogenetic effects in lymphocytes of Chernobyl clean-up workers are still significant.
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Affiliation(s)
- J R Lazutka
- Department of Botany & Genetics, Vilnius University, Lithuania
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22
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Abstract
The effects of age, sex and smoking on sister-chromatid exchange (SCE) frequency and distribution in human lymphocytes were assessed by means of multiple linear regression. Differences in SCE scores were associated with all above variables: SCE increased with age and cigarette smoking intensity, and higher SCE frequencies were observed in females. Changes in SCE distribution were associated with age and smoking: the ratio of sample variance to sample mean (heterogeneity index) increased with age and smoking intensity. Cell proliferation kinetics, as measured by replication index, inversely correlated with age. Monte Carlo methods were used to show that in the occupational study, analysis of 20-50 persons per group and 25 cells per person may be recommended.
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Affiliation(s)
- J R Lazutka
- Ecological Genetics Laboratory, Vilnius University, Lithuania
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Lazutka JR. Analysis of cellular kinetics in PHA-stimulated blood lymphocytes: a commentary. Mutat Res 1993; 290:317-8. [PMID: 7694124 DOI: 10.1016/0027-5107(93)90173-d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Abstract
The effect of the antibiotic novobiocin on human recombinant tumor necrosis factor (TNF)-induced sister-chromatid exchanges (SCEs) were examined in human peripheral blood lymphocytes. TNF, when introduced in a dose range of 10-1000 U/ml at the initiation of culture, was found to cause a significant increase in SCE frequency. The simultaneous addition of TNF and novobiocin (25 micrograms/ml) in the assay resulted in no increase of SCE frequency. Delayed (for 24 h) addition of novobiocin suppressed the induction of SCEs by 50, 100 and 500 U/ml but not by 1000 U/ml of TNF.
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Affiliation(s)
- J R Lazutka
- Ecological Genetics Laboratory, Vilnius University, Lithuania
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25
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Abstract
The effects of alcohol consumption, cigarette smoking and age on sister chromatid exchange (SCE) frequency in human lymphocytes were assessed by means of multiple linear regression. An increase in SCE rates was associated with alcohol consumption (p = 0.0001), smoking (p = 0.0231), and, to a small extent (p = 0.057), age. These three confounding factors explain 48% of the inter-personal variation in SCE rates among subjects studied.
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Affiliation(s)
- J R Lazutka
- Ecological Genetics Laboratory, Vilnius University, Lithuania
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Lazutka JR, Rudaitiene S. Effect of tumor necrosis factor on cell proliferation kinetics and sister chromatid exchange frequency in human lymphocytes. Carcinogenesis 1991; 12:1355-7. [PMID: 2070503 DOI: 10.1093/carcin/12.7.1355] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Recombinant human tumor necrosis factor alpha (TNF) was found to cause a significant increase in cell proliferation rates and sister chromatid exchange (SCE) frequency in phytohemagglutinin-stimulated human lymphocytes in vitro. The cells were treated for the entire cultivation time with 10, 50, 100, 500, 1000 and 5000 U/ml TNF. Cell proliferation rates, as measured by the replication index, increased significantly (P less than 0.01) in a concentration-independent manner. The maximal extent of SCE induction (15.18 +/- 0.57 versus 10.26 +/- 0.45 SCEs/cell in control, P less than 0.001) was observed with 50 U/ml TNF.
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Affiliation(s)
- J R Lazutka
- Ecological Genetics Laboratory, Vilnius University, Lithuania
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Lazutka JR, Slapsyte G. Persistence of cytogenetic damage induced by alkylating antineoplastic drug phopurinum in human lymphocytes in vivo and in vitro. Cancer Lett 1990; 54:113-8. [PMID: 2224839 DOI: 10.1016/0304-3835(90)90031-r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Sister chromatid exchanges (SCEs) and structural chromosome aberrations (CAs) induced by cytostatic drug phopurinum in vivo and in vitro were studied in human lymphocytes. Phopurinum was found to cause a significant increase of CAs in lymphocytes of patients undergoing cytostatic therapy. Increased CA rates, however, declined rapidly after the cessation of treatment. This decline observed in vivo is in agreement with experimental results obtained in vitro, where it is found that the induction of SCEs and CAs occur only during the 1st cell cycle after pulse-treatment as G1 stage with phopurinum. Thus, phopurinum induced short-lived DNA damage both experimentally and in vivo.
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Affiliation(s)
- J R Lazutka
- Ecological Genetics Laboratory, Vilnius University, Lithuania
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28
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Abstract
Induction of sister chromatid exchanges (SCEs) and chromosome aberrations (CAs) by two antineoplastic drugs--phopurinum (2-dimethylamino-6-diethyleneiminophosphamido-7-methylpurine) and recombinant human interferon alpha 2 (rHuIFN-alpha 2) was studied in human lymphocytes in vitro. Phopurinum was found to cause a significant increase of both SCEs and CAs in lymphocytes, while rHuIFN-alpha 2 induced only SCEs. Combined treatment with these two drugs reduced SCE and CA levels as compared with those induced by phopurinum alone. The maximal extent of reduction, however, was observed at intermediate doses of phopurinum.
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Affiliation(s)
- J R Lazutka
- Ecological Genetics Laboratory, Vilnius University, Lithuanian S.S.R
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