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Ospino R, Berges A, Chen LW, Lina I, Hillel AT. Prolonged Surgical Interval Following Chemotherapy in a Patient With Idiopathic Subglottic Stenosis (iSGS): Case Report and Brief Review of Literature. Ann Otol Rhinol Laryngol 2022. [DOI: 10.1177/00034894211068608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Objective: To report a case of a patient with idiopathic subglottic stenosis (iSGS) who no longer required surgical intervention for her disease following a chemotherapy regimen of carboplatin and doxorubicin for ovarian cancer. A brief review of the literature and discussion on the possible mechanism of action of chemotherapy agents affecting fibrosis is included. Methods: Case report and review of literature. Results: A 71-year-old Caucasian woman with iSGS was managed with serial endoscopic excision and dilation (n = 5) from 2013 to 2017 with an average dilation interval of 12.3 months. After a course of doxorubicin and carboplatin to treat her ovarian cancer, we observed that her airway stenosis surprisingly stabilized, and has no longer required a surgical dilation for 45 months, which signifies an increase of 33 months when compared to her averaged dilation interval (12.3 months) prior to her second course of chemotherapy. Conclusion: We present an iSGS patient whose fibrosis was arrested following carboplatin/doxorubicin treatment. While a single case, a possible mechanism is carboplatin/doxorubicin’s inhibition of pathologic CD4 lymphocytes that propagate laryngotracheal fibrosis. Further investigation of like mechanisms may allow for translation of local agents with inhibitory effects on CD4+ cells and/or fibroblasts as a novel therapy for airway fibrosis.
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Affiliation(s)
- Rafael Ospino
- Department of Otolaryngology – Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Alexandra Berges
- Department of Otolaryngology – Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Lena W. Chen
- Department of Otolaryngology – Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Ioan Lina
- Department of Otolaryngology – Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Alexander T. Hillel
- Department of Otolaryngology – Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Hsu CW, Hewes KP, Stavitskaya L, Kruhlak NL. Construction and application of (Q)SAR models to predict chemical-induced in vitro chromosome aberrations. Regul Toxicol Pharmacol 2018; 99:274-288. [PMID: 30278198 DOI: 10.1016/j.yrtph.2018.09.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 09/24/2018] [Accepted: 09/26/2018] [Indexed: 12/23/2022]
Abstract
In drug development, genetic toxicology studies are conducted using in vitro and in vivo assays to identify potential mutagenic and clastogenic effects, as outlined in the International Council for Harmonisation (ICH) S2 regulatory guideline. (Quantitative) structure-activity relationship ((Q)SAR) models that predict assay outcomes can be used as an early screen to prioritize pharmaceutical candidates, or later during product development to evaluate safety when experimental data are unavailable or inconclusive. In the current study, two commercial QSAR platforms were used to build models for in vitro chromosomal aberrations in Chinese hamster lung (CHL) and Chinese hamster ovary (CHO) cells. Cross-validated CHL model predictive performance showed sensitivity of 80 and 82%, and negative predictivity of 75 and 76% based on 875 training set compounds. For CHO, sensitivity of 61 and 67% and negative predictivity of 68 and 74% was achieved based on 817 training set compounds. The predictive performance of structural alerts in a commercial expert rule-based SAR software was also investigated and showed positive predictivity of 48-100% for selected alerts. Case studies examining incorrectly-predicted compounds, non-DNA-reactive clastogens, and recently-approved pharmaceuticals are presented, exploring how an investigational approach using similarity searching and expert knowledge can improve upon individual (Q)SAR predictions of the clastogenicity of drugs.
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Affiliation(s)
- Chia-Wen Hsu
- US Food and Drug Administration, Center for Drug Evaluation and Research, Silver Spring, MD, USA
| | - Kurt P Hewes
- US Food and Drug Administration, Center for Drug Evaluation and Research, Silver Spring, MD, USA
| | - Lidiya Stavitskaya
- US Food and Drug Administration, Center for Drug Evaluation and Research, Silver Spring, MD, USA
| | - Naomi L Kruhlak
- US Food and Drug Administration, Center for Drug Evaluation and Research, Silver Spring, MD, USA.
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Bektaş İ, Karaman Ş, Dıraz E, Çelik M. The role of natural indigo dye in alleviation of genotoxicity of sodium dithionite as a reducing agent. Cytotechnology 2016; 68:2245-2255. [PMID: 27757710 DOI: 10.1007/s10616-016-0018-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 08/19/2016] [Indexed: 11/25/2022] Open
Abstract
Indigo blue is a natural dye used for thousands of years by civilizations to dye fabric blue and it is naturally obtained from Isatis tinctoria. I. tinctoria is not only used for extraction of indigo blue color but also used medicinally in Traditional Chinese Medicine because of its active compounds. Sodium dithionite (Na2S2O4) is used in dye bath for indigo blue extraction, but this reducing agent and its derivatives are major pollutants of textile industry and subsequently have hazardous influences on public health. Herein, the present study was designed to obtain the high yield of natural indigo dye but with low possible toxic effect. In this context, genotoxic effects of particular combinations of natural dye solutions obtained from Isatis tinctoria subsp. tomentolla with Na2S2O4 as reducing agent were investigated. Dye solutions were obtained using two different pH levels (pH 9 and 11) and three different concentrations of Na2S2O4 (2.5, 5 and 10 mg/ml). In addition to the dye solutions and reducing agent, aqueous extracts of I. tinctoria were assessed for their genotoxicity on human lymphocytes. For in vitro testing of genotoxicity, chromosomal aberrations (CAs), sister chromatid exchanges (SCEs) and mitotic indexes (MI) assays were used. Accordingly, Na2S2O4 caused significant increases in CA and SCE as well decrease in MI but the genotoxic effects of sodium dithionite were reduced with natural indigo dye. As a result, aqueous extracts of Isatis leaves removed the toxic effects of sodium dithionite and showed anti-genotoxic effect. For the optimal and desired quality but with less toxic effects of natural dye, 2.5 mg/ml (for wool yarn) and 5 mg/ml (for cotton yarn) of Na2S2O4 doses were found to be the best doses for reduction in the dye bath at Ph 9.
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Affiliation(s)
- İdris Bektaş
- Medicinal and Aromatic Plants Department, Suluova Vocational School, Amasya University, Amasya, 05000, Turkey
| | - Şengül Karaman
- Department of Biology, Faculty of Science and Letters, University of KSU, Kahramanmaraş, 46100, Turkey.
| | - Emel Dıraz
- Department of Biology, Faculty of Science and Letters, University of KSU, Kahramanmaraş, 46100, Turkey
| | - Mustafa Çelik
- Department of Medical Genetics, Faculty of Medicine, University of KSU, Kahramanmaraş, 46100, Turkey
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Istifli ES, Topaktaş M. In vitro genotoxicity and cytotoxicity of a particular combination of pemetrexed and cefixime in human peripheral blood lymphocytes. SPRINGERPLUS 2015; 4:35. [PMID: 25653913 PMCID: PMC4312319 DOI: 10.1186/s40064-015-0803-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Accepted: 01/08/2015] [Indexed: 11/10/2022]
Abstract
This study aims to find the genotoxic and cytotoxic effects of a particular combination of pemetrexed (PMX) and cefixime (CFX) in human peripheral blood lymphocytes. Chromosome aberration (CA), sister chromatid exchange (SCE), and micronucleus (MN) tests were used to assess genotoxicity. Whereas, the cytotoxicity was evaluated by using mitotic index (MI), proliferation index (PI), and nuclear division index (NDI). Our tests were proceeded with concentrations of 12.5 + 450, 25 + 800, 37.5 + 1150, and 50 + 1500 μg/mL of a mixture of PMX and CFX separately for 24 hr and 48 hr. The combination of PMX + CFX did not induce the CA or SCE in human peripheral blood lymphocytes when compared with both the control and the solvent control. MN in human peripheral blood lymphocytes was not significantly increased after treatment with a particular combination of PMX + CFX. However, PMX + CFX significantly decreased the MI, PI and NDI at all concentrations for 24- and 48-hr treatment periods when compared with both controls. Generally, PMX + CFX inhibited cell proliferation more than positive control (MMC) and showed a higher cytotoxic effect than MMC at both treatment periods. These results were compared with individual effects of PMX and CFX. As a result, it was observed that a particular combination of PMX + CFX was not genotoxic. However, the combination synergistically increase cytotoxicity in human peripheral blood lymphocytes.
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Affiliation(s)
- Erman Salih Istifli
- Department of Biology, Faculty of Science and Letter, Cukurova University, 01330 Adana, Turkey
| | - Mehmet Topaktaş
- Department of Biology, Faculty of Science and Letter, Cukurova University, 01330 Adana, Turkey
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Djelić N, Radaković M, Spremo-Potparević B, Živković L, Bajić V, Stevanović J, Stanimirović Z. Evaluation of cytogenetic and DNA damage in human lymphocytes treated with adrenaline in vitro. Toxicol In Vitro 2015; 29:27-33. [DOI: 10.1016/j.tiv.2014.08.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 05/09/2014] [Accepted: 08/10/2014] [Indexed: 10/24/2022]
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Özkara A, Akyıl D, Eren Y, Erdoğmuş SF, Konuk M, Sağlam E. Assessment of cytotoxic and genotoxic potential of pyracarbolid by Allium test and micronucleus assay. Drug Chem Toxicol 2014; 38:337-41. [PMID: 25275653 DOI: 10.3109/01480545.2014.966831] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The present study evaluates the cytotoxic and genotoxic potential of pyracarbolid using both micronuleus (MN) assay, in human lymphocytes, and Allium cepa assay, in the root meristem cells. In Allium test, EC50 value was determined in order to selecting the test concentrations for the assay and the root tips were treated with 25 ppm (EC50/2), 50 ppm (EC50) and 100 ppm (EC50 × 2) concentrations of pyracarbolid. One percent of dimethyl sulphoxide (DMSO) and methyl methane sulfonate (MMS) were used as negative and positive controls, respectively. In the micronucleus assay, the cultures were treated with four concentrations (250, 500, 750 and 1000 µg/ml) of pyracarbolid for 24 and 48 h, negative and positive controls were also used in the experiment parallely. The results showed that mitotic index (MI) significantly reduced with increasing the pyracarbolid concentration at each exposure time. It was also obtained that prophase and metaphase index decreased significantly in all concentration at each exposure time. Anaphase index decreased as well and results were found to be statistically significant, except 24 h. A significant increase was observed in MN frequency in all concentrations and both treatment periods when compared with the controls. Pyracarbolid also caused a significant reduction in the cytokinesis block proliferation index (CBPI) in all concentration and both exposure time.
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Affiliation(s)
- Arzu Özkara
- Department of Biology, Faculty of Arts and Sciences, Afyon Kocatepe University , Afyonkarahisar , Turkey
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Norizadeh Tazehkand M, Topaktas M. Thein vitrogenotoxic and cytotoxic effects of remeron on human peripheral blood lymphocytes. Drug Chem Toxicol 2014; 38:266-71. [DOI: 10.3109/01480545.2014.947425] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Micronucleus assay in human lymphocytes after exposure to alloxydim sodium herbicide in vitro. Cytotechnology 2014; 67:1059-66. [PMID: 25017922 DOI: 10.1007/s10616-014-9746-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Accepted: 05/15/2014] [Indexed: 10/24/2022] Open
Abstract
This study evaluates the cytotoxic and genotoxic potential of alloxydim sodium using micronucleus (MN) assay, in human peripheral lymphocytes. MN assay was used to investigate the genotoxic effects of alloxydim sodium in human peripheral lymphocytes treated with 250, 500, 750, 1,000 µg/ml concentrations of alloxydim sodium for 24 and 48 h. Solvent, negative and positive controls were also used in the experiments in parallel. The obtained results were evaluated in statistical analyses by using Dunnett-t test (two sided) and p < 0.05 was accepted as significant. Alloxydim sodium significantly increased the MN formation compared with the negative control, at both 750 and 1,000 µg/ml concentrations and treatment periods. We also evaluated the nuclear division index (NDI) for cytotoxicity of this pesticide in the experiment, and finally observed a significant decrease of the NDI values at all concentrations of alloxydim sodium and at both treatment periods.
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Bogiatzi S, Pagonopoulou O, Simopoulou M, Kareli D, Kouskoukis A, Koutka Z, Ipsilantis P, Lialiaris T. The cytogenetic action of ifosfamide, mesna, and their combination on peripheral rabbit lymphocytes: an in vivo/in vitro cytogenetic study. Cytotechnology 2013; 66:753-60. [PMID: 23949582 DOI: 10.1007/s10616-013-9624-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Accepted: 07/22/2013] [Indexed: 10/26/2022] Open
Abstract
Ifosfamide (IFO) is an alkylating nitrogen mustard, administrated as an antineoplasmic agent. It is characterized by its intense urotoxic action, leading to hemorrhagic cystitis. This side effect of IFO raises the requirement for the co-administration with sodium 2-sulfanylethanesulfonate (Mesna) aiming to avoid or minimize this effect. IFO and Mesna were administrated separately on rabbit's lymphocytes in vivo, which were later developed in vitro. Cytogenetic markers for sister chromatid exchanges (SCEs), proliferation rate index (PRI) and Mitotic Index were recorded. Mesna's action, in conjunction with IFO reduces the frequency of SCEs, in comparison with the SCEs recordings obtained when IFO is administered alone. In addition to this, when high concentrations of Mesna were administered alone significant reductions of the PRI were noted, than with IFO acting at the same concentration on the lymphocytes. Mesna significantly reduces IFO's genotoxicity, while when administered in high concentrations it acts in an inhibitory fashion on the cytostatic action of the drug.
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Affiliation(s)
- S Bogiatzi
- Departments of Genetics, Demokritos University of Thrace, Alexandroupolis, Greece
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