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Giridharan VV, Karupppagounder V, Arumugam S, Nakamura Y, Guha A, Barichello T, Quevedo J, Watanabe K, Konishi T, Thandavarayan RA. 3,4-Dihydroxybenzalacetone (DBL) Prevents Aging-Induced Myocardial Changes in Senescence-Accelerated Mouse-Prone 8 (SAMP8) Mice. Cells 2020; 9:cells9030597. [PMID: 32138157 PMCID: PMC7140466 DOI: 10.3390/cells9030597] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 02/27/2020] [Accepted: 02/27/2020] [Indexed: 12/02/2022] Open
Abstract
Aging is a predominant risk factor for the development and progression of cardiovascular complications. Physiologically and anatomically, the heart undergoes numerous changes that result in poor cardiac function in the elderly population. Recently, several studies have provided promising results, confirming the ability of the senescence-accelerated mouse-prone 8 (SAMP8) model to accurately model age-related cardiovascular alterations. In this study, using a murine model of senescence, SAMP8, we aimed to investigate the effect of 3,4-dihydroxybenzalacetone (DBL), a catechol-containing phenylpropanoid derivative isolated from Inonotus obliquus (Chaga), on cardiac aging. DBL was administered at the doses of 10 mg/kg and 20 mg/kg by oral gavage to SAMP8 mice to examine aging-mediated cardiac changes, such as oxidative DNA damage, oxygen radical antioxidant capacity (ORAC) value, fibrosis, inflammation, and apoptosis. The treatment with DBL at both doses significantly reduced aging-mediated oxidative DNA damage, and simultaneously increased the ORAC value in the SAMP8 assay. Cardiac fibrosis was assessed with Azan-Mallory staining, and the number of cardiac remodeling markers was found to be significantly reduced after the treatment with DBL. We also observed a decrease in cardiomyocyte apoptosis as measured by the terminal transferase-mediated dUTP nick end labeling (TUNEL) staining method and the caspase-3 levels in SAMP8 mice compared with senescence-resistant control (SAMR1) mice. The findings from this study suggest that DBL has a potentially beneficial effect on aging-mediated myocardial alterations. Further studies are warranted to confirm the promising potential of this catechol compound against aging-associated myocardial dysfunction.
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Affiliation(s)
- Vijayasree V. Giridharan
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX 77054, USA; (V.V.G.); (T.B.); (J.Q.)
- Faculty of Applied Life Sciences, Faculty of Pharmaceutical Sciences, Niigata University of Pharmacy and Applied Life Sciences Niigata, Niigata 956-8603, Japan;
| | - Vengadeshprabhu Karupppagounder
- Department of Orthopedics and Rehabilitation, Penn State College of Medicine, 500 University Drive, Hershey, PA 17033, USA;
- Department of Clinical Pharmacology, Faculty of Pharmaceutical Sciences, Niigata University of Pharmacy and Applied Life Sciences, 265-1, Higashijima, Akiha ku, Niigata 956-8603, Japan; (S.A.); (K.W.)
| | - Somasundaram Arumugam
- Department of Clinical Pharmacology, Faculty of Pharmaceutical Sciences, Niigata University of Pharmacy and Applied Life Sciences, 265-1, Higashijima, Akiha ku, Niigata 956-8603, Japan; (S.A.); (K.W.)
- National Institute of Pharmaceutical Education and Research (NIPER), Jadavpur, Kolkata, West Bengal 700032, India
| | - Yutaka Nakamura
- Faculty of Applied Life Sciences, Faculty of Pharmaceutical Sciences, Niigata University of Pharmacy and Applied Life Sciences Niigata, Niigata 956-8603, Japan;
| | - Ashrith Guha
- Department of Cardiology, Houston Methodist Hospital, Houston, TX 77030, USA;
| | - Tatiana Barichello
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX 77054, USA; (V.V.G.); (T.B.); (J.Q.)
- Center of Excellence on Mood Disorders, Faillace Department of Psychiatry and Behavioral Sciences McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX 77054, USA
- Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth, Graduate School of Biomedical Sciences, Houston, TX 77030, USA
| | - Joao Quevedo
- Translational Psychiatry Program, Faillace Department of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX 77054, USA; (V.V.G.); (T.B.); (J.Q.)
- Center of Excellence on Mood Disorders, Faillace Department of Psychiatry and Behavioral Sciences McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX 77054, USA
- Neuroscience Graduate Program, The University of Texas MD Anderson Cancer Center UTHealth, Graduate School of Biomedical Sciences, Houston, TX 77030, USA
- Translational Psychiatry Laboratory, Graduate Program in Health Sciences, University of Southern Santa Catarina (UNESC), Criciúma 88800-000, SC, Brazil
| | - Kenichi Watanabe
- Department of Clinical Pharmacology, Faculty of Pharmaceutical Sciences, Niigata University of Pharmacy and Applied Life Sciences, 265-1, Higashijima, Akiha ku, Niigata 956-8603, Japan; (S.A.); (K.W.)
- Department of Laboratory Medicine and Clinical Epidemiology for Prevention of Noncommunicable Diseases, Niigata University Graduate School of Medical and Dental Sciences, 757, Ichibancho, Asahimachidori, Chuo ku, Niigata City 951-8510, Japan
| | - Tetsuya Konishi
- Niigata University of Pharmacy & Applied Life Sciences (NUPALS), LIAISON R/D Center, Niigata 956-8603, Japan
- Correspondence: (T.K.); (R.A.T.); Tel.: 713-363-8080 (R.A.T.)
| | - Rajarajan A. Thandavarayan
- Department of Clinical Pharmacology, Faculty of Pharmaceutical Sciences, Niigata University of Pharmacy and Applied Life Sciences, 265-1, Higashijima, Akiha ku, Niigata 956-8603, Japan; (S.A.); (K.W.)
- Department of Cardiology, Houston Methodist Hospital, Houston, TX 77030, USA;
- Correspondence: (T.K.); (R.A.T.); Tel.: 713-363-8080 (R.A.T.)
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Ng LF, Ng LT, van Breugel M, Halliwell B, Gruber J. Mitochondrial DNA Damage Does Not Determine C. elegans Lifespan. Front Genet 2019; 10:311. [PMID: 31031801 PMCID: PMC6473201 DOI: 10.3389/fgene.2019.00311] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 03/21/2019] [Indexed: 02/02/2023] Open
Abstract
The mitochondrial free radical theory of aging (mFRTA) proposes that accumulation of oxidative damage to macromolecules in mitochondria is a causative mechanism for aging. Accumulation of mitochondrial DNA (mtDNA) damage may be of particular interest in this context. While there is evidence for age-dependent accumulation of mtDNA damage, there have been only a limited number of investigations into mtDNA damage as a determinant of longevity. This lack of quantitative data regarding mtDNA damage is predominantly due to a lack of reliable assays to measure mtDNA damage. Here, we report adaptation of a quantitative real-time polymerase chain reaction (qRT-PCR) assay for the detection of sequence-specific mtDNA damage in C. elegans and apply this method to investigate the role of mtDNA damage in the aging of nematodes. We compare damage levels in old and young animals and also between wild-type animals and long-lived mutant strains or strains with modifications in ROS detoxification or production rates. We confirm an age-dependent increase in mtDNA damage levels in C. elegans but found that there is no simple relationship between mtDNA damage and lifespan. MtDNA damage levels were high in some mutants with long lifespan (and vice versa). We next investigated mtDNA damage, lifespan and healthspan effects in nematode subjected to exogenously elevated damage (UV- or γ-radiation induced). We, again, observed a complex relationship between damage and lifespan in such animals. Despite causing a significant elevation in mtDNA damage, γ-radiation did not shorten the lifespan of nematodes at any of the doses tested. When mtDNA damage levels were elevated significantly using UV-radiation, nematodes did suffer from shorter lifespan at the higher end of exposure tested. However, surprisingly, we also found hormetic lifespan and healthspan benefits in nematodes treated with intermediate doses of UV-radiation, despite the fact that mtDNA damage in these animals was also significantly elevated. Our results suggest that within a wide physiological range, the level of mtDNA damage does not control lifespan in C. elegans.
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Affiliation(s)
- Li Fang Ng
- Ageing Research Laboratory, Science Division, Yale-NUS College, Singapore, Singapore
| | - Li Theng Ng
- Ageing Research Laboratory, Science Division, Yale-NUS College, Singapore, Singapore.,Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Neurobiology Programme, Life Sciences Institute, National University of Singapore, Singapore, Singapore
| | - Michiel van Breugel
- Environmental Science Laboratory, Science Division, Yale-NUS College, Singapore, Singapore
| | - Barry Halliwell
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Jan Gruber
- Ageing Research Laboratory, Science Division, Yale-NUS College, Singapore, Singapore.,Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
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Jamkhande PG, Ghante MH, Ajgunde BR. Software based approaches for drug designing and development: A systematic review on commonly used software and its applications. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.bfopcu.2017.10.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Grissa I, Ezzi L, Chakroun S, Mabrouk A, Saleh AB, Braham H, Haouas Z, Cheikh HB. Rosmarinus officinalis L. ameliorates titanium dioxide nanoparticles and induced some toxic effects in rats' blood. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:12474-12483. [PMID: 28361401 DOI: 10.1007/s11356-017-8848-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 03/16/2017] [Indexed: 05/20/2023]
Abstract
Titanium dioxide nanoparticles (TiO2 NPs) have been widely used as a white pigment in food and drugs. The most important route of human exposure to TiO2 is through food and drug products containing TiO2 additives. This study investigates the efficacy of an oral traditional use of rosemary extract in ameliorating some toxic effects induced on blood of TiO2 NP-intoxicated rats. Rats were given rosemary extract via intragastric administration 1 h before the intragastric administration of 100 mg/kg/day TiO2 NPs (10 nm) for 60 days. TiO2 NPs significantly increased serum cholesterol, glucose, and triglyceride levels of rats. They also induced significant oxidative stress and inflammatory and caused DNA damage in peripheral blood leukocytes. The rosemary extract appears to have a significant protective effect by lowering glucose level properties, restoring the lipid profile and showing an antioxidative, anti-inflammatory, and antigenotoxic properties against TiO2 NPs toxicity. In conclusion, this study gives an encouraging scientific basis for consumers of rosemary leaves to keep on with this culinary habit.
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Affiliation(s)
- Intissar Grissa
- Laboratory of Histology and Cytogenetics (Research unit of Genetic, Genotoxicity and Childhood Illness UR12ES10), Faculty of Medicine, University of Monastir, Street Avicenne, 5019, Monastir, Tunisia.
| | - Lobna Ezzi
- Laboratory of Histology and Cytogenetics (Research unit of Genetic, Genotoxicity and Childhood Illness UR12ES10), Faculty of Medicine, University of Monastir, Street Avicenne, 5019, Monastir, Tunisia
| | - Sana Chakroun
- Laboratory of Histology and Cytogenetics (Research unit of Genetic, Genotoxicity and Childhood Illness UR12ES10), Faculty of Medicine, University of Monastir, Street Avicenne, 5019, Monastir, Tunisia
| | - Abir Mabrouk
- Laboratory of Histology and Cytogenetics (Research unit of Genetic, Genotoxicity and Childhood Illness UR12ES10), Faculty of Medicine, University of Monastir, Street Avicenne, 5019, Monastir, Tunisia
| | - Azer Ben Saleh
- Department of Hematology, Centre Hospitalier Universitaire Taher Sfar, Mahdia, Tunisia
| | - Hamadi Braham
- Department of Hematology, Centre Hospitalier Universitaire Taher Sfar, Mahdia, Tunisia
| | - Zohra Haouas
- Laboratory of Histology and Cytogenetics (Research unit of Genetic, Genotoxicity and Childhood Illness UR12ES10), Faculty of Medicine, University of Monastir, Street Avicenne, 5019, Monastir, Tunisia
| | - Hassen Ben Cheikh
- Laboratory of Histology and Cytogenetics (Research unit of Genetic, Genotoxicity and Childhood Illness UR12ES10), Faculty of Medicine, University of Monastir, Street Avicenne, 5019, Monastir, Tunisia
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Dridi I, Grissa I, Ezzi L, Chakroun S, Ben-Cherif W, Haouas Z, Aouam K, Ben-Attia M, Reinberg A, Boughattas NA. Circadian variation of cytotoxicity and genotoxicity induced by an immunosuppressive agent "Mycophenolate Mofetil" in rats. Chronobiol Int 2016; 33:1208-1221. [PMID: 27484793 DOI: 10.1080/07420528.2016.1211139] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Immunosuppressive drugs such as Mycophenolate Mofetil (MMF) are used to suppress the immune system activity in transplant patients and reduce the risk of organ rejection. The present study investigates whether the potential cytotoxicity and genotoxicity varied according to MMF dosing-time in Wistar Rat. A potentially toxic MMF dose (300 mg/kg) was acutely administered by the i.p. route in rats at four different circadian stages (1, 7, 13 and 19 hours after light onset, HALO). Rats were sacrificed 3 days following injection, blood and bone marrow were removed for determination of cytotoxicity and genotoxicity analysis. The genotoxic effect of this pro-drug was investigated using the comet assay and the micronucleus test. Hematological changes were also evaluated according to circadian dosing time. MMF treatment induced a significant decrease at 7 HALO in red blood cells, in the hemoglobin rate and in white blood cells. These parameters followed a circadian rhythm in controls or in treated rats with an acrophase located at the end of the light-rest phase. A significant, thrombocytopenia was observed according to MMF circadian dosing time. Furthermore, abnormally shaped red cells, sometimes containing micronuclei, poikilocytotic in red cells and hypersegmented neutrophil nuclei were observed with MMF treatment. The micronucleus test revealed damage to chromosomes in rat bone marrow; the comet assay showed significant DNA damage. This damage varied according to circadian MMF dosing time. The injection of MMF in the middle of the dark-activity phase produced a very mild hematological toxicity and low genotoxicity. Conversely, it induced maximum hematological toxicity and genotoxicity when the administration occurred in the middle of the light-rest phase, which is physiologically analogous to the end of the activity of the diurnal phase in human patients.
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Affiliation(s)
- Ichrak Dridi
- a Laboratory of Pharmacology, Faculty of Medicine , University of Monastir , Monastir , Tunisia
| | - Intissar Grissa
- b Laboratory of Histology Embryology and Cytogenetic, Faculty of Medicine , University of Monastir , Monastir , Tunisia
| | - Lobna Ezzi
- b Laboratory of Histology Embryology and Cytogenetic, Faculty of Medicine , University of Monastir , Monastir , Tunisia
| | - Sana Chakroun
- b Laboratory of Histology Embryology and Cytogenetic, Faculty of Medicine , University of Monastir , Monastir , Tunisia
| | - Wafa Ben-Cherif
- a Laboratory of Pharmacology, Faculty of Medicine , University of Monastir , Monastir , Tunisia
| | - Zohra Haouas
- b Laboratory of Histology Embryology and Cytogenetic, Faculty of Medicine , University of Monastir , Monastir , Tunisia
| | - Karim Aouam
- a Laboratory of Pharmacology, Faculty of Medicine , University of Monastir , Monastir , Tunisia
| | - Mossadok Ben-Attia
- c Laboratory of Biomonitoring of the Environment, Faculty of Science of Bizerte , Carthage University , Tunis , Tunisia
| | - Alain Reinberg
- d Unit of Chronobiology , Foundation A. de Rothschild , Paris Cedex , France
| | - Naceur A Boughattas
- a Laboratory of Pharmacology, Faculty of Medicine , University of Monastir , Monastir , Tunisia
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Badgujar PC, Selkar NA, Chandratre GA, Pawar NN, Dighe VD, Bhagat ST, Telang AG, Vanage GR. Fipronil-induced genotoxicity and DNA damage in vivo: Protective effect of vitamin E. Hum Exp Toxicol 2016; 36:508-519. [DOI: 10.1177/0960327116655388] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Fipronil, an insecticide of the phenylpyrazole class has been classified as a carcinogen by United States Environmental Protection Agency, yet very limited information is available about its genotoxic effects. Adult male and female animals were gavaged with various doses of fipronil (2.5, 12.5, and 25 mg/kg body weight (bw)) to evaluate micronucleus test (mice), chromosome aberration (CA), and comet assay (rats), respectively. Cyclophosphamide (40 mg/kg bw; intraperitoneal) was used as positive control. Another group of animals were pretreated with vitamin E orally (400 mg/kg bw) for 5 days prior to administration of fipronil (12.5 mg/kg). Fipronil exposure in both male and female mice caused significant increase in the frequency of micronuclei (MN) in polychromatic erythrocytes. Similarly, structural CAs in bone marrow cells and DNA damage in the lymphocytes was found to be significantly higher in the male and female rats exposed to fipronil as compared to their respective controls. The average degree of protection (male and female animals combined together) shown by pretreatment of vitamin E against fipronil-induced genotoxicity was 63.28%: CAs; 47.91%: MN formation; and 74.70%: DNA damage. Findings of this study demonstrate genotoxic nature of fipronil regardless of gender effect and documents protective role of vitamin E.
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Affiliation(s)
- PC Badgujar
- Division of Pharmacology and Toxicology, Indian Veterinary Research Institute (ICAR-IVRI), Izatnagar, India
- Department of Food Science and Technology, Food Toxicology Section, National Institute of Food Technology Entrepreneurship and Management, Kundli, Sonipat, Haryana, India
| | - NA Selkar
- National Centre for Preclinical Reproductive and Genetic Toxicology, National Institute for Research in Reproductive Health (ICMR-NIRRH), Mumbai, India
| | - GA Chandratre
- Division of Pathology, Indian Veterinary Research Institute (ICAR-IVRI), Izatnagar, India
| | - NN Pawar
- Division of Pharmacology and Toxicology, Indian Veterinary Research Institute (ICAR-IVRI), Izatnagar, India
| | - VD Dighe
- National Centre for Preclinical Reproductive and Genetic Toxicology, National Institute for Research in Reproductive Health (ICMR-NIRRH), Mumbai, India
| | - ST Bhagat
- National Centre for Preclinical Reproductive and Genetic Toxicology, National Institute for Research in Reproductive Health (ICMR-NIRRH), Mumbai, India
| | - AG Telang
- Toxicology Laboratory, Centre for Animal Disease Research and Diagnosis, Indian Veterinary Research Institute (ICAR-IVRI), Izatnagar, India
| | - GR Vanage
- National Centre for Preclinical Reproductive and Genetic Toxicology, National Institute for Research in Reproductive Health (ICMR-NIRRH), Mumbai, India
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Grissa I, Elghoul J, Ezzi L, Chakroun S, Kerkeni E, Hassine M, El Mir L, Mehdi M, Ben Cheikh H, Haouas Z. Anemia and genotoxicity induced by sub-chronic intragastric treatment of rats with titanium dioxide nanoparticles. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2015; 794:25-31. [DOI: 10.1016/j.mrgentox.2015.09.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 07/11/2015] [Accepted: 09/18/2015] [Indexed: 12/19/2022]
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Giridharan VV, Thandavarayan RA, Arumugam S, Mizuno M, Nawa H, Suzuki K, Ko KM, Krishnamurthy P, Watanabe K, Konishi T. Schisandrin B Ameliorates ICV-Infused Amyloid β Induced Oxidative Stress and Neuronal Dysfunction through Inhibiting RAGE/NF-κB/MAPK and Up-Regulating HSP/Beclin Expression. PLoS One 2015; 10:e0142483. [PMID: 26556721 PMCID: PMC4640572 DOI: 10.1371/journal.pone.0142483] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Accepted: 10/22/2015] [Indexed: 01/12/2023] Open
Abstract
Amyloid β (Aβ)-induced neurotoxicity is a major pathological mechanism of Alzheimer’s disease (AD). Our previous studies have demonstrated that schisandrin B (Sch B), an antioxidant lignan from Schisandra chinensis, could protect mouse brain against scopolamine- and cisplatin-induced neuronal dysfunction. In the present study, we examined the protective effect of Sch B against intracerebroventricular (ICV)-infused Aβ-induced neuronal dysfunction in rat cortex and explored the potential mechanism of its action. Our results showed that 26 days co-administration of Sch B significantly improved the behavioral performance of Aβ (1–40)-infused rats in step-through test. At the same time, Sch B attenuated Aβ-induced increases in oxidative and nitrosative stresses, inflammatory markers such as inducible nitric oxide syntheses, cyclooxygenase-2, interleukin-1β (IL-1β), IL-6, and tumor necrosis factor-α, and DNA damage. Several proteins such as receptor for advanced glycation end products (RAGE), nuclear factor-κB, mitogen-activated protein kinases, and apoptosis markers were over expressed in Aβ-infused rats but were significantly inhibited by Sch B treatment. Furthermore, Sch B negatively modulated the Aβ level with simultaneous up-regulation of HSP70 and beclin, autophagy markers in Aβ-infused rats. The aforementioned effects of Sch B suggest its protective role against Aβ-induced neurotoxicity through intervention in the negative cycle of RAGE-mediated Aβ accumulation during AD patho-physiology.
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Affiliation(s)
| | - Rajarajan A. Thandavarayan
- Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, Texas, United States of America
- * E-mail: (RAT); (TK)
| | - Somasundaram Arumugam
- Department of Clinical Pharmacology, Niigata University of Pharmacy & Applied Life Sciences (NUPALS), Niigata City, Japan
| | - Makoto Mizuno
- Division of Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
| | - Hiroyuki Nawa
- Division of Neurobiology, Brain Research Institute, Niigata University, Niigata, Japan
| | - Kenji Suzuki
- Department of Gastroenterology and Hepatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kam M. Ko
- Section of Biochemistry and Cell biology, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong SAR, China
| | - Prasanna Krishnamurthy
- Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, Texas, United States of America
| | - Kenichi Watanabe
- Department of Clinical Pharmacology, Niigata University of Pharmacy & Applied Life Sciences (NUPALS), Niigata City, Japan
| | - Tetsuya Konishi
- Basic studies on second generation functional foods, NUPALS, NUPALS Liaison R/D promotion division, Niigata, Japan, Changchun University of Chinese Medicine, Changchun, RP China
- * E-mail: (RAT); (TK)
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Antioxidant Formulae, Shengmai San, and LingGuiZhuGanTang, Prevent MPTP Induced Brain Dysfunction and Oxidative Damage in Mice. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 2015:584018. [PMID: 26612995 PMCID: PMC4647033 DOI: 10.1155/2015/584018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 08/12/2015] [Accepted: 10/11/2015] [Indexed: 01/19/2023]
Abstract
The present study was designed to evaluate the preventive effect of antioxidative traditional oriental medicine formulae, Shengmai San (SMS) and LingGuiZhuGanTang (LGZGT), against 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) (i.p 30 mg·kg−1 for 5 consecutive days) induced neurotoxicity. In in vitro antioxidant assays measured with Trolox and butyl hydroxyl toluene as reference antioxidant revealed that SMS has higher scavenging potential against hydroxyl radical than superoxide anion radical, but LGZGT was the reverse. The neuroprotective effect of SMS and LGZGT against MPTP was evaluated in mice by behavioral, biochemical, and immunohistochemical studies. In the behavioral study, both SMS and LGZGT significantly reversed the locomotive impairment induced by MPTP. Simultaneously, both formulae significantly prevented the MPTP induced dopaminergic neuron loss assessed by tyrosine hydroxylase in the midbrain. Both SMS and LGZGT significantly attenuated the elevated lipid peroxidation and protein carbonyls levels by MPTP. The DNA damage induced by MPTP was also prevented by both formulae. Although a little difference in the protective functions was observed between the two formulae, such as in DNA damage and behavioral studies, the results indicate that both SMS and LGZGT with antioxidant property act as a good candidate applicable for the antioxidant based complementary therapies of neurodegenerative diseases.
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Datkhile KD, Gaikwad PS, Ghaskadbi SS, Mukhopadhyaya R, Nath BB. Chironomus ramosus larvae exhibit DNA damage control in response to gamma radiation. Int J Radiat Biol 2015; 91:742-8. [DOI: 10.3109/09553002.2015.1062572] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Thandavarayan RA, Giridharan VV, Arumugam S, Suzuki K, Ko KM, Krishnamurthy P, Watanabe K, Konishi T. Schisandrin B prevents doxorubicin induced cardiac dysfunction by modulation of DNA damage, oxidative stress and inflammation through inhibition of MAPK/p53 signaling. PLoS One 2015; 10:e0119214. [PMID: 25742619 PMCID: PMC4351084 DOI: 10.1371/journal.pone.0119214] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Accepted: 01/26/2015] [Indexed: 11/25/2022] Open
Abstract
Doxorubicin (Dox) is a highly effective antineoplastic drug. However, Dox-induced apoptosis in cardiomyocytes leads to irreversible degenerative cardiomyopathy, which limits Dox clinical application. Schisandrin B (Sch B), a dibenzocyclooctadiene derivative isolated from the fruit of Schisandra chinensis, has been shown to protect against oxidative damage in liver, heart and brain tissues in rodents. In current study, we investigated possible protective effects of Sch B against Dox-induced cardiomyopathy in mice. Mice received a single injection of Dox (20 mg/kg IP). Five days after Dox administration, left ventricular (LV) performance was significantly depressed and was improved by Sch B treatment. Sch B prevented the Dox-induced increase in lipid peroxidation, nitrotyrosine formation, and metalloproteinase activation in the heart. In addition, the increased expression of phospho-p38 MAPK and phospho-MAPK activated mitogen kinase 2 levels by Dox were significantly suppressed by Sch B treatment. Sch B also attenuated Dox-induced higher expression of LV proinflammatory cytokines, cardiomyocyte DNA damage, myocardial apoptosis, caspase-3 positive cells and phopho-p53 levels in mice. Moreover, LV expression of NADPH oxidase subunits and reactive oxygen species were significantly less in Sch B treatment mice after Dox injection. These findings suggest that Sch B attenuates Dox-induced cardiotoxicity via antioxidative and anti-inflammatory effects.
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Affiliation(s)
- Rajarajan A. Thandavarayan
- Department of Clinical Pharmacology, Niigata University of Pharmacy and Applied Life Sciences (NUPALS), Higashijima, Akiha Ku, Niigata, Japan
- Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, Texas, United States of America
| | | | - Somasundaram Arumugam
- Department of Clinical Pharmacology, Niigata University of Pharmacy and Applied Life Sciences (NUPALS), Higashijima, Akiha Ku, Niigata, Japan
| | - Kenji Suzuki
- Department of Gastroenterology and Hepatology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kam Ming Ko
- Section of Biochemistry and Cell Biology, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong SAR, China
| | - Prasanna Krishnamurthy
- Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, Texas, United States of America
| | - Kenichi Watanabe
- Department of Clinical Pharmacology, Niigata University of Pharmacy and Applied Life Sciences (NUPALS), Higashijima, Akiha Ku, Niigata, Japan
| | - Tetsuya Konishi
- Basic studies on second generation functional foods, NUPALS, NUPALS Liaison R/D promotion devision, Higashi-jima 265-1, Akiha-ku, Niigata, Japan, and Changchun University of Chinese Medicine, Bosuo Road #1035 Jingyue Economic Development District, Changchun, RP China
- * E-mail:
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12
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Bhilwade HN, Jayakumar S, Chaubey R. Age-dependent changes in spontaneous frequency of micronucleated erythrocytes in bone marrow and DNA damage in peripheral blood of Swiss mice. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2014; 770:80-4. [DOI: 10.1016/j.mrgentox.2014.04.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Revised: 03/25/2014] [Accepted: 04/30/2014] [Indexed: 10/25/2022]
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13
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Joseph P, Bhat NN, Copplestone D, Narayana Y. Production of gamma induced reactive oxygen species and damage of DNA molecule in HaCaT cells under euoxic and hypoxic condition. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-3375-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Praveen Kumar MK, Shyama SK, Sonaye BS, Naik UR, Kadam SB, Bipin PD, D'costa A, Chaubey RC. Evaluation of γ-radiation-induced DNA damage in two species of bivalves and their relative sensitivity using comet assay. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2014; 150:1-8. [PMID: 24642292 DOI: 10.1016/j.aquatox.2014.02.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Revised: 02/08/2014] [Accepted: 02/13/2014] [Indexed: 06/03/2023]
Abstract
Ionizing radiation is known to induce genetic damage in diverse groups of organisms. Under accidental situations, large quantities of radioactive elements get released into the environment and radiation emitted from these radionuclides may adversely affect both the man and the non-human biota. The present study is aimed (a) to know the genotoxic effect of gamma radiation on aquatic fauna employing two species of selected bivalves, (b) to evaluate the possible use of 'Comet assay' for detecting genetic damage in haemocytes of bivalves as a biomarker for environmental biomonitoring and also (c) to compare the relative sensitivity of two species of bivalves viz. Paphia malabarica and Meretrix casta to gamma radiation. The comet assays was optimized and validated using different concentrations (18, 32 and 56 mg/L) of ethyl methanesulfonate (EMS), a direct-acting reference genotoxic agent, to which the bivalves were exposed for various times (24, 48 and 72 h). Bivalves were irradiated (single acute exposure) with 5 different doses (viz. 2, 4, 6, 8 and 10 Gy) of gamma radiation and their genotoxic effects on the haemocytes were studied using the comet assay. Haemolymph was collected from the adductor muscle at 24, 48 and 72 h of both EMS-exposed and irradiated bivalves and comet assay was carried out using standard protocol. A significant increase in DNA damage was observed as indicated by an increase in % tail DNA damage at different concentrations of EMS and all the doses of gamma radiation as compared to controls in both bivalve species. This showed a dose-dependent increase of genetic damage induced in bivalves by EMS as well as gamma radiation. Further, the highest DNA damage was observed at 24h. The damage gradually decreased with time, i.e. was smaller at 48 and 72 h than at 24h post irradiation in both species of bivalves. This may indicate repair of the damaged DNA and/or loss of heavily damaged cells as the post irradiation time advanced. The present study reveals that gamma radiation induces single strand breaks in DNA as measured by alkaline comet assay in bivalves and comet assay serves as a sensitive and rapid method to detect genotoxicity of gamma radiation. This study further indicates that both M. casta and P. malabarica exhibit almost identical sensitivity to gamma radiation as measured by DNA damage.
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Affiliation(s)
| | - S K Shyama
- Department of Zoology, Goa University, Goa 403206, India.
| | - B S Sonaye
- Department of Radiation Oncology, Goa Medical College, Goa, India
| | - U Roshini Naik
- Department of Zoology, Goa University, Goa 403206, India
| | - S B Kadam
- Department of Zoology, Goa University, Goa 403206, India
| | - P D Bipin
- Department of Zoology, Goa University, Goa 403206, India
| | - A D'costa
- Department of Zoology, Goa University, Goa 403206, India
| | - R C Chaubey
- Radiation Biology & Health Science Division, Bhabha Atomic Research Centre, Mumbai, India
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15
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DNA damage in hair root cells as a biomarker for gamma ray exposure. Mutat Res 2013; 756:201-5. [PMID: 23811168 DOI: 10.1016/j.mrgentox.2013.06.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Accepted: 06/18/2013] [Indexed: 11/23/2022]
Abstract
The purpose of the present research is to examine whether human hair root cells can be used for dose assessment after in vitro exposure to ionizing radiation. Hair root samples plucked from random head regions were collected from 5 healthy human subjects. Some of these hair samples were used as control and some were irradiated with 0.5-5Gy of gamma ray using a Cs-137 gamma irradiator at a dose rate of 0.14Gy/s. DNA damage (single-strand breaks) was determined in hair root cells of these samples using the comet assay technique. The comet assay parameters, tail length (TL) and tail moment (TM), showed a significant increase (p<.05) in single-strand DNA breaks in hair roots cells of the exposed samples compared to control. A linear dose-effect relationship was observed when tail moment or tail length was plotted against the log of the radiation dose. This research suggests a possible use of human hair root cell DNA damage as a biomarker especially for low dose radiation.
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16
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Velho-Pereira R, Kumar A, Pandey BN, Mishra KP, Jagtap AG. Radioprotection by Macerated Extract of Nigella sativa in Normal Tissues of Fibrosarcoma Bearing Mice. Indian J Pharm Sci 2012; 74:403-14. [PMID: 23716868 PMCID: PMC3660866 DOI: 10.4103/0250-474x.108415] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Revised: 09/22/2012] [Accepted: 09/28/2012] [Indexed: 11/04/2022] Open
Abstract
The current study was undertaken to study the effect of a macerated extract of Nigella sativa seeds in normal as well as in tumour bearing mice against gamma radiation-induced cellular damage to normal tissues. This was done to mimic the clinical setting where in, normal tissues of cancer patients undergoing radiotherapy are exposed to the deleterious effects of radiation. The protection of cellular DNA was analysed in peripheral blood leucocytes of whole body irradiated mice following pretreatment with macerated extract of Nigella sativa seeds (100 mg/kg), using alkaline comet assay, and also estimating biochemical and blood parameters such as levels of antioxidant enzymes superoxide dismutase and catalase, thiobarbituric acid reactive substances and protein oxidation in organs such as spleen, liver, brain and intestine haemoglobin and total leucocyte count, respectively. The results showed that the macerated extract of Nigella sativa seeds protected the liver, spleen, brain and intestines both in normal as well as tumour bearing mice. This study concludes that macerated extract of Nigella sativa seeds has protective effects against radiation-induced damage and biochemical alterations which could be attributed to the ability to scavenge free radicals and its antioxidant properties. Hence macerated extract of Nigella sativa seeds, could be used in combination with radiation to protect against oxidative stress in normal tissues and improving the quality of life of cancer patients by mitigating unwanted side effects of radiation in normal tissues.
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Affiliation(s)
- Reelma Velho-Pereira
- Department of Pharmacology, Bombay College of Pharmacy, Mumbai University, Mumbai-400 098, India
| | - A. Kumar
- Radiation and Cancer Biology Section, Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Mumbai-400 085, India
| | - B. N. Pandey
- Radiation and Cancer Biology Section, Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Mumbai-400 085, India
| | - K. P. Mishra
- Radiation and Cancer Biology Section, Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Mumbai-400 085, India
| | - Aarti G. Jagtap
- Department of Pharmacology, Bombay College of Pharmacy, Mumbai University, Mumbai-400 098, India
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17
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Joseph J, Panicker SN, Janardhanan KK. Protective effect of polysaccharide-protein complex from a polypore mushroom, Phellinus rimosus against radiation-induced oxidative stress. Redox Rep 2012; 17:22-7. [PMID: 22340512 DOI: 10.1179/1351000211y.0000000018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
OBJECTIVES Ionizing radiation induces severe oxidative stress in the body resulting an imbalance in prooxidant and antioxidant status in the cell. The aim of the present study is to investigate the protective effect of polysaccharide protein complex (PPC-Pr) isolated from the mushroom Phellinus rimosus against the oxidative stress induced by gamma radiation. METHODOLOGY PPC-Pr complex was isolated from the aqueous extracts of P. rimosus. The complex was administered to Swiss albino mice at a concentration of 5 and 10 mg/kg body weight intraperitoneally for 5 days consecutively and exposed to 4 Gy of gamma irradiation. Animals were sacrificed 1 day after irradiation and the antioxidant parameters such as glutathione, glutathione peroxidase, superoxide dismutase, catalase, glutathione reductase as well as lipid peroxidation were evaluated in both liver and brain tissues to evaluate oxidative stress. Amifostine, a standard radioprotective agent, was used as a positive control. In vitro DNA damage was assessed using the comet assay. Survival studies were also carried out to determine the protective role of PPC-Pr against radiation-induced delayed oxidative stress. RESULTS PPC-Pr treatment enhanced the declined levels of antioxidants and comet parameters to a significant level, indicating its antioxidant as well as DNA protecting potential. Significant increase in the survival rate of animals was also observed in irradiated animals treated with PPC-Pr complex. The results were comparable to the standard drug amifostine. DISCUSSION The results indicate profound effects of PPC-Pr against radiation-induced oxidative stress. The findings suggest potential therapeutic use of PPC-Pr in radiotherapy.
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Affiliation(s)
- Jini Joseph
- Department of Microbiology, Amala Cancer Research Centre, Thrissur, Kerala, India
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18
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Tiwari D, Kamble J, Chilgunde S, Patil P, Maru G, Kawle D, Bhartiya U, Joseph L, Vanage G. Clastogenic and mutagenic effects of bisphenol A: An endocrine disruptor. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2012; 743:83-90. [DOI: 10.1016/j.mrgentox.2011.12.023] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2011] [Revised: 12/03/2011] [Accepted: 12/29/2011] [Indexed: 01/08/2023]
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Rana S, Kumar R, Sultana S, Sharma RK. Radiation-induced biomarkers for the detection and assessment of absorbed radiation doses. J Pharm Bioallied Sci 2011; 2:189-96. [PMID: 21829314 PMCID: PMC3148623 DOI: 10.4103/0975-7406.68500] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2010] [Revised: 07/01/2010] [Accepted: 07/06/2010] [Indexed: 01/25/2023] Open
Abstract
Radiation incident involving living organisms is an uncommon but a very serious situation. The first step in medical management including triage is high-throughput assessment of the radiation dose received. Radiation exposure levels can be assessed from viability of cells, cellular organelles such as chromosome and different intermediate metabolites. Oxidative damages by ionizing radiation result in carcinogenesis, lowering of the immune response and, ultimately, damage to the hematopoietic system, gastrointestinal system and central nervous system. Biodosimetry is based on the measurement of the radiation-induced changes, which can correlate them with the absorbed dose. Radiation biomarkers such as chromosome aberration are most widely used. Serum enzymes such as serum amylase and diamine oxidase are the most promising biodosimeters. The level of gene expression and protein are also good biomarkers of radiation.
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Affiliation(s)
- Sudha Rana
- Division of CBRN Defence, Institute of Nuclear Medicine and Allied Sciences, Brig. S. K. Mazumdar Marg, Delhi - 110 054, India
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Giridharan VV, Thandavarayan RA, Bhilwade HN, Ko KM, Watanabe K, Konishi T. Schisandrin B, attenuates cisplatin-induced oxidative stress, genotoxicity and neurotoxicity through modulating NF-κB pathway in mice. Free Radic Res 2011; 46:50-60. [DOI: 10.3109/10715762.2011.638291] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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21
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Jayakumar S, Bhilwade HN, Dange PS, Sarma HD, Chaubey RC, Pandey BN. Magnitude of radiation-induced DNA damage in peripheral blood leukocytes and its correlation with aggressiveness of thymic lymphoma in Swiss mice. Int J Radiat Biol 2011; 87:1113-9. [DOI: 10.3109/09553002.2011.622032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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22
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Thandavarayan RA, Watanabe K, Sari FR, Ma M, Lakshmanan AP, Giridharan VV, Gurusamy N, Nishida H, Konishi T, Zhang S, Muslin AJ, Kodama M, Aizawa Y. Modulation of doxorubicin-induced cardiac dysfunction in dominant-negative p38α mitogen-activated protein kinase mice. Free Radic Biol Med 2010; 49:1422-31. [PMID: 20705132 DOI: 10.1016/j.freeradbiomed.2010.08.005] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2010] [Revised: 07/05/2010] [Accepted: 08/02/2010] [Indexed: 11/16/2022]
Abstract
Doxorubicin (Dox) is a widely used antitumor drug, but its application is limited because of its cardiotoxic side effects. Increased expression of p38α mitogen-activated protein kinase (MAPK) promotes cardiomyocyte apoptosis and is associated with cardiac dysfunction induced by prolonged agonist stimulation. However, the role of p38α MAPK is not clear in Dox-induced cardiac injury. Cardiac dysfunction was induced by a single injection of Dox into wild-type (WT) mice and transgenic mice with cardiac-specific expression of a dominant-negative mutant form of p38α MAPK (TG). Left ventricular (LV) fractional shortening and ejection fraction were higher and the expression levels of phospho-p38 MAPK and phospho-MAPK-activated mitogen kinase 2 were significantly suppressed in TG mouse heart compared to WT mice after Dox injection. Production of LV proinflammatory cytokines, cardiomyocyte DNA damage, myocardial apoptosis, caspase-3-positive cells, and phospho-p53 expression were decreased in TG mice after Dox injection. Moreover, LV expression of NADPH oxidase subunits and reactive oxygen species was significantly less in TG mice compared to WT mice after Dox injection. These findings suggest that p38α MAPK may play a role in the regulation of cardiac function, oxidative stress, and inflammatory and apoptotic mediators in the heart after Dox administration.
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Affiliation(s)
- Rajarajan A Thandavarayan
- Department of Clinical Pharmacology, Niigata University of Pharmacy and Applied Life Sciences, Niigata City 956-8603, Japan
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Dandekar P, Dhumal R, Jain R, Tiwari D, Vanage G, Patravale V. Toxicological evaluation of pH-sensitive nanoparticles of curcumin: Acute, sub-acute and genotoxicity studies. Food Chem Toxicol 2010; 48:2073-89. [DOI: 10.1016/j.fct.2010.05.008] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2009] [Revised: 03/27/2010] [Accepted: 05/05/2010] [Indexed: 11/29/2022]
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Narayan BH, Tatewaki N, Giridharan VV, Nishida H, Konishi T. Modulation of doxorubicin-induced genotoxicity by squalene in Balb/c mice. Food Funct 2010; 1:174-9. [DOI: 10.1039/c0fo00102c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Grigoryan RS, Yang B, Keshelava N, Barnhart JR, Reynolds CP. Flow cytometry analysis of single-strand DNA damage in neuroblastoma cell lines using the F7-26 monoclonal antibody. Cytometry A 2008; 71:951-60. [PMID: 17879237 DOI: 10.1002/cyto.a.20458] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The F7-26 monoclonal antibody (Mab) has been reported to be specific for single-strand DNA damage (ssDNA) and to also identify cells in apoptosis. We carriedout studies to determine if F7-26 binding measured by flow cytometry was able to specifically identify exogenous ssDNA as opposed to DNA damage from apoptosis. Neuroblastoma cells were treated with melphalan (L-PAM), fenretinide, 4-hydroperoxycyclophosphamide (4-HC)+/-pan-caspase inhibitor BOC-d-fmk, topotecan or with 10Gy gamma radiation+/-hydrogen peroxide (H2O2) and fixed immediately postradiation. Cytotoxicity was measured by DIMSCAN digital imaging fluorescence assay. The degree of ssDNA damage was analyzed by flow cytometry using Mab F7-26, with DNA visualized by propidium iodide counterstaining. Flow cytometry was used to measure apoptosis detected by terminal deoxynucleotidyltransferase (TUNEL) assay and reactive oxygen species (ROS) by carboxy-dichlorofluorescein diacetate. Irradiated and immediately fixed neuroblastoma cells showed increased ssDNA, but not apoptosis by TUNEL (TUNEL-negative). 4-HC or L-PAM+/-BOC-d-fmk increased ssDNA (F7-26-positive), but BOC-d-fmk prevented TUNEL staining. Fenretinide increased apoptosis by TUNEL but not ssDNA damage detected with F7-26. Enhanced ssDNA in neuroblastoma cells treated with radiation+H2O2 was associated with increased ROS. Topotecan increased both ssDNA and cytotoxicity in 4-HC-treated cells. These data demonstrate that Mab F7-26 recognized ssDNA due to exogenous DNA damage, rather than apoptosis. This assay should be useful to characterize the mechanism of action of antineoplastic drugs.
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Affiliation(s)
- Rita S Grigoryan
- Developmental Therapeutics Program, USC-CHLA Institute for Pediatric Clinical Research, Los Angeles, California 90027, USA
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Malladi SM, Bhilwade HN, Khan MZ, Chaubey RC. Gamma ray induced genetic changes in different organs of chick embryo using peripheral blood micronucleus test and comet assay. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2007; 630:20-7. [PMID: 17383931 DOI: 10.1016/j.mrgentox.2007.02.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2006] [Revised: 02/13/2007] [Accepted: 02/16/2007] [Indexed: 11/30/2022]
Abstract
Ionizing radiation is known to produce a variety of cellular and sub cellular damage in both prokaryotic and eukaryotic cells. Present studies were undertaken to assess gamma ray induced DNA damage in different organs of the chick embryo using alkaline comet assay and peripheral blood micronucleus test. Further the suitability of chick embryo, as an alternative model for genotoxicity evaluation of environmental agents was assessed. Fertilized eggs of Rhode island red strain were exposed to 0.5, 1 and 2Gy of gamma rays delivered at a dose rate of 0.316Gy/min using a (60)Co teletherapy machine. Peripheral blood smears were prepared from 8- to 11-day-old chick embryos for micronucleus test. Alkaline comet assay was performed on 11-day-old chick embryos in different organs such as the heart, liver, lung, blood, bone marrow, brain and kidney. Analysis of the data revealed a significant increase in the frequency of micronucleated polychromatic erythrocytes, micronucleated normochromatic erythrocytes and total micronucleated erythrocytes in the peripheral blood of gamma irradiated chick embryos at all the doses tested as compared to the respective controls. The polychromatic to normochromatic erythrocytes ratio which is an indicator of proliferation rate of hematopoetic tissue, decreased in the irradiated groups as compared to the controls. Data obtained from comet assay, clearly demonstrated a significant increase in DNA strand breaks in all the organs of irradiated chick embryos as compared to the respective controls. However, maximum damage was observed in the heart tissue on all the doses tested, followed by kidney, brain, lung, blood and liver. The lowest damage was observed in the bone marrow tissue. Both micronucleus test and comet assay were found to be suitable biomarkers for the evaluation of genotoxicity of gamma radiation in the chick embryo.
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Affiliation(s)
- S M Malladi
- Department of Zoology, Pune University, Pune 411007, India
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27
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Banner SH, Ruben LN, Johnson RO. Bleomycin-induced DNA damage and repair inXenopus laevis andXenopus tropicalis. ACTA ACUST UNITED AC 2007; 307:84-90. [PMID: 17171708 DOI: 10.1002/jez.a.339] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Microgel cell electrophoresis has been used with various species to measure breakage of DNA and DNA repair following exposure to the radiomimetic antibiotic, bleomycin. With humans, a high degree of DNA damage is considered to be predictive of cancer susceptibility. Non-isogeneic Xenopus laevis, the South African clawed toad, rarely develop spontaneous or induced cancers. Here, we investigate bleomycin-induced DNA damage and repair in splenic lymphocytes of this species to test consistency with cancer predictability. As X. laevis is pseudotetraploid in nature, while Xenopus tropicalis is diploid, we additionally explore the effect of polyploidy on DNA damage and repair in these vertebrates. The results show that higher doses of bleomycin are required to induce comparable levels of DNA damage in both Xenopus species, than in humans. X. tropicalis, the diploid, is more bleomycin-sensitive than is X. laevis. Additionally, repair rates of damaged DNA of X. laevis lymphocytes are more rapid than those of X. tropicalis, although both are hours slower than human leukocytes. While no data exist on cancer susceptibility in X. tropicalis, the results suggest greater susceptibility to cancer than X. laevis, but less than in humans. Thus, polyploidy serves as a protection against DNA damage and allows more rapid repair.
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Affiliation(s)
- Sarah H Banner
- Department of Biology, Reed College, Portland, Oregon 97202-8199, USA
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Sandhya T, Lathika KM, Pandey BN, Bhilwade HN, Chaubey RC, Priyadarsini KI, Mishra KP. Protection against radiation oxidative damage in mice by Triphala. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2006; 609:17-25. [PMID: 16860592 DOI: 10.1016/j.mrgentox.2006.05.006] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2006] [Revised: 05/26/2006] [Accepted: 05/30/2006] [Indexed: 11/19/2022]
Abstract
Protection against whole body gamma-irradiation (WBI) of Swiss mice orally fed with Triphala (TPL), an Ayurvedic formulation, in terms of mortality of irradiated animals as well as DNA damage at cellular level has been investigated. It was found that radiation induced mortality was reduced by 60% in mice fed with TPL (1g/kg body weight/day) orally for 7 days prior to WBI at 7.5 Gy followed by post-irradiation feeding for 7 days. An increase in xanthine oxidoreductase activity and decrease in superoxide dismutase activity was observed in the intestine of mice exposed to WBI, which, however, reverted back to those levels of sham-irradiated controls, when animals were fed with TPL for 7 days prior to irradiation. These data have suggested the prevention of oxidative damage caused by whole body radiation exposure after feeding of animals with TPL. To further understand the mechanisms involved, the magnitude of DNA damage was studied by single cell gel electrophoresis (SCGE) in blood leukocytes and splenocytes obtained from either control animals or those fed with TPL for 7 days followed by irradiation. Compared to irradiated animals without administering TPL, the mean tail length was reduced about three-fold in blood leukocytes of animals fed with TPL prior to irradiation. Although, similar protection was observed in splenocytes of TPL fed animals, the magnitude of prevention of DNA damage was significantly higher than that observed in leukocytes. It has been concluded that TPL protected whole body irradiated mice and TPL induced protection was mediated through inhibition of oxidative damage in cells and organs. TPL seems to have potential to develop into a novel herbal radio-protector for practical applications.
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Affiliation(s)
- T Sandhya
- Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
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Sandhya T, Lathika KM, Pandey BN, Mishra KP. Potential of traditional ayurvedic formulation, Triphala, as a novel anticancer drug. Cancer Lett 2006; 231:206-14. [PMID: 15899544 DOI: 10.1016/j.canlet.2005.01.035] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2004] [Revised: 01/30/2005] [Accepted: 01/31/2005] [Indexed: 11/16/2022]
Abstract
The cytotoxic effects of aqueous extract of Triphala, an ayurvedic formulation, were investigated on human breast cancer cell line (MCF-7) and a transplantable mouse thymic lymphoma (barcl-95). The viability of treated cells was found to decrease with the increasing concentrations of Triphala. On the other hand, treatment of normal breast epithelial cells, MCF-10 F, human peripheral blood mononuclear cells, mouse liver and spleen cells, with similar concentrations of Triphala did not affect their cytotoxicity significantly. The drug treatment was found to induce apoptosis in MCF-7 and barcl-95 cells in vitro as determined by annexin-V fluorescence and proportion of apoptotic cells was found dependent on Triphala concentration. MCF-7 cells treated with Triphala when subjected to single cell gel electrophoresis, revealed a pattern of DNA damage, characteristic of apoptosis. Studies on Triphala treated MCF-7 and barcl-95 cells showed significant increase in intracellular reactive oxygen species (ROS) in a concentration dependent manner. ROS increase was, however, found to be insignificant in MCF-10 F as well as in murine spleen and liver normal cells. In vivo, direct oral feeding of Triphala to mice (40 mg/kg body weight) transplanted with barcl-95 produced significant reduction in tumor growth as evaluated by tumor volume measurement. It was also found that apoptosis was significantly higher in the excised tumor tissue of Triphala fed mice as compared to the control, suggesting the involvement of apoptosis in tumor growth reduction. These results suggest that Triphala possessed ability to induce cytotoxicity in tumor cells but spared the normal cells. The differential effect of Triphala on normal and tumor cells seems to be related to its ability to evoke differential response in intracellular ROS generation. The differential response of normal and tumor cells to Triphala in vitro and the substantial regression of transplanted tumor in mice fed with Triphala points to its potential use as an anticancer drug for clinical treatment.
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Affiliation(s)
- T Sandhya
- Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
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30
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Basu A, Som A, Ghoshal S, Mondal L, Chaubey RC, Bhilwade HN, Rahman MM, Giri AK. Assessment of DNA damage in peripheral blood lymphocytes of individuals susceptible to arsenic induced toxicity in West Bengal, India. Toxicol Lett 2005; 159:100-12. [PMID: 15953701 DOI: 10.1016/j.toxlet.2005.05.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2004] [Revised: 05/04/2005] [Accepted: 05/06/2005] [Indexed: 11/21/2022]
Abstract
Assessment of DNA damage was carried out using alkaline comet assay in lymphocytes of 30 individuals exposed to high levels of arsenic (247.12+/-18.93 microg/l) through contaminated groundwater in North 24 Parganas district, West Bengal, India. All of them exhibited high arsenic contents in nail (4.20+/-0.67 microg/g), hair (2.06+/-0.20 microg/g) and urine (259.75+/-33.89 microg/l) samples and manifested various arsenical skin lesions. Unexposed samples were collected from 30 residents of the unaffected East Midnapur district with very little or no exposure to arsenic (7.69+/-0.49 microg/l) in drinking water. The results were evaluated principally by manual analysis of comets and partly by computerized image analysis. Both the analytical methods exhibited a high degree of agreement in results. The exposed participants expressed significantly higher DNA damage (p < 0.01) in their lymphocytes than the unexposed participants. Alkaline comet assay was also combined with formamidopyrimidine-DNA glycosylase enzyme digestion to confirm that arsenic induced oxidative base damage in the lymphocytes. Significant positive trend effects of comet lengths in relation to arsenic levels in water prove that DNA damage can be used as a sensitive biomarker of arsenic exposure. This study demonstrates that arsenic induced significant DNA damage in the exposed participants, which could correspond to a higher susceptibility to arsenic induced toxicity and carcinogenicity.
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Affiliation(s)
- Anamika Basu
- Division of Human Genetics and Genomics, Indian Institute of Chemical Biology, 4 Raja S.C. Mullick Road, Jadavpur, Kolkata 700032, India
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Genomic Instability:Signaling Pathways Orchestrating the Responsesto Ionizing Radiation and Cisplatin. Genome Integr 2005. [DOI: 10.1007/7050_010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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Maurya DK, Salvi VP, Krishnan Nair CK. Radioprotection of normal tissues in tumor-bearing mice by troxerutin. JOURNAL OF RADIATION RESEARCH 2004; 45:221-228. [PMID: 15304964 DOI: 10.1269/jrr.45.221] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The flavanoid derivative troxerutin, used clinically for treating venous disorders, protected biomembranes and cellular DNA against the deleterious effects of gamma-radiation. The peroxidation of lipids (measured as thiobarbituric acid-reacting substances, or TBARS) in rat liver microsomal and mitochondrial membranes resulting from gamma-irradiation up to doses of 500 Gy in vitro was prevented by 0.2 mM troxerutin. The administration of troxerutin (175 mg/kg body weight) to tumor-bearing mice by ip one hour prior to 4 Gy whole-body gamma-irradiation significantly decreased the radiation-induced peroxidation of lipids in tissues such as liver and spleen, but there was no reduction of lipid peroxidation in tumor. The effect of troxerutin in gamma-radiation-induced DNA strand breaks in different tissues of tumor-bearing mice was studied by comet assay. The administration of troxerutin to tumor-bearing animals protected cellular DNA against radiation-induced strand breaks. This was evidenced from decreases in comet tail length, tail moment, and percent of DNA in the tails in cells of normal tissues such as blood leukocytes and bone marrow, and these parameters were not altered in cells of fibrosarcoma tumor. The results revealed that troxerutin could preferentially protect normal tissues against radiation-induced damages in tumor-bearing animals.
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Affiliation(s)
- Dharmendra Kumar Maurya
- Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Mumbai, India
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Nemavarkar PS, Chourasia BK, Pasupathy K. Detection of gamma-irradiation induced DNA damage and radioprotection of compounds in yeast using comet assay. JOURNAL OF RADIATION RESEARCH 2004; 45:169-174. [PMID: 15304956 DOI: 10.1269/jrr.45.169] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The single cell gel electrophoresis assay (SCGE), a very rapid and sensitive method, has been applied to follow gamma-irradiation induced DNA damage in budding yeast, Saccharomyces cerevisiae. Spheroplasting the gamma-irradiated yeast cells by enzyme glusulase, before subjecting them to electrophoresis, resulted in a well-defined appearance of comets. Yeast comets look quite different from mammalian comets. A linear relationship was observed between the doses of irradiation and the tail moments of comets. These studies were extended to follow the action of known radio-protectors, i.e., caffeine and disulfiram. The results revealed the usefulness SCGE as applied to yeast in studies of the gamma-irradiation-induced DNA breaks and also radio-protection by chemicals at doses that are not feasible with other eukaryotes.
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Affiliation(s)
- P S Nemavarkar
- Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Trombay, Mumbai, India
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Rajagopalan R, Ranjan SK, Nair CKK. Effect of vinblastine sulfate on gamma-radiation-induced DNA single-strand breaks in murine tissues. Mutat Res 2003; 536:15-25. [PMID: 12694742 DOI: 10.1016/s1383-5718(03)00015-9] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The effect of vinblastine sulfate on gamma-radiation-induced DNA strand breaks in different tissues of tumour bearing mice, was studied by single-cell gel electrophoresis. Intraperitonial administration of different doses (0.25-2.0mg/kg body weight) of vinblastine sulfate 30 min prior to 4 Gy gamma-radiation exposure showed a dose-dependent decrease in the yield of DNA strand breaks in murine fibrosarcoma, blood leukocytes and bone marrow cells. The dose-dependent protection of cellular DNA against radiation-induced strand breaks as evidenced from comet tail length, tail moment and percent DNA in the tail, was more pronounced in bone marrow cells than in the cells of the tumor fibrosarcoma. In fibrosarcoma cells, the decrease in comet tail length, tail moment and percent DNA in the tail was detected at lower doses of vinblastine sulfate administration and these parameters were not significantly altered at higher doses, from that of the control irradiated. From this study, it appears that in addition to anticancer activity, vinblastine sulfate could offer protection to the normal tissues against gamma-radiation-induced DNA strand breaks.
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Affiliation(s)
- Rema Rajagopalan
- Radiation Biology and Health Sciences Division, Bhabha Atomic Research Center, Mumbai, 400085, India.
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Avishai N, Rabinowitz C, Rinkevich B. Use of the comet assay for studying environmental genotoxicity: comparisons between visual and image analyses. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2003; 42:155-165. [PMID: 14556223 DOI: 10.1002/em.10189] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In order to evaluate the applicability of different measurement parameters employed in the comet assay for analyzing environmental samples, fish hepatoma (RTH-149) cells were exposed to concentrations of the model genotoxic agent hydrogen peroxide (H(2)O(2); 1, 5, and 10 microM) and to five water samples from sites along the Kishon River, the most polluted river in Israel. DNA damage was scored in parallel by visual and computer-image (Viscomet) analyses using 12 different parameters. Each parameter exhibited a different profile of responses. The four visual parameters were highly sensitive to the lowest (1 microM) H(2)O(2) concentration (1.8-7.0-fold of the control). At 10 microM H(2)O(2) exposure, the visual parameter, percentage severe damage, showed the highest (40.3-fold) response while four other parameters, tail area, tail extent moment (Viscomet), mean actual tail length and cumulative tail length (visual analysis), also had substantially elevated responses (8-11-fold). We found that the DNA damage induced by field samples was similar in magnitude to the damage induced by 1 microM H(2)O(2), with only some of the parameters being highly sensitive to the damage. Only about one-half of the parameters could distinguish four significant levels of genotoxicity among the five sampling sites, while the remaining parameters detected only three levels. It is concluded that the choice of parameters for analyzing genotoxicity in ecotoxicological studies should be made in accordance with the characteristics of each parameter.
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Affiliation(s)
- Nanthawan Avishai
- National Institute of Oceanography, Israel Oceanographic and Limnological Research, Haifa, Israel.
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