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Ravasi D, Topalis P, Puggioli A, Leo C, Flacio E, Papagiannakis G, Balestrino F, Martelli M, Bellini R. Random mutations induced by a sub-sterilizing dose of gamma ray on Aedes albopictus male pupae and transmission to progeny. Acta Trop 2024; 256:107271. [PMID: 38795874 DOI: 10.1016/j.actatropica.2024.107271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 05/23/2024] [Accepted: 05/23/2024] [Indexed: 05/28/2024]
Abstract
The application of the Sterile Insect Technique (SIT) to mosquito control is based on the systematic release of large numbers of adult males that have been previously sterilized by irradiation. Ionizing radiation doses inducing full sterility also cause somatic damages that reduce the capacity of the treated males to compete with wild males. The optimal dose inducing high levels of male sterility and minimal impact on competitiveness can be assessed by establishing a dose-response curve. Sub-sterile males are, to a variable degree, still fertile and might be able to transmit to the progeny and following generation(s) sub-lethal random mutations resulting from irradiation. To investigate this, we treated Ae. albopictus male pupae with a sub-sterilizing (2-4 % of egg hatching) dose of gamma rays and explored expressed mutated genes in treated males and their progeny using RNA-seq. Single nucleotide polymorphisms (SNPs) were called using two independent pipelines. Only SNPs common to both pipelines (less than 5 % of the total SNPs predicted) were considered reliable and were annotated to genes. Over 600 genes with mutations likely induced by irradiation were found in the treated Ae. albopictus males. A part of the genes found mutated in irradiated males were also found in (and therefore probably passed on to) males of the F1 and F2 progeny, indicating that genetic variations induced by irradiation may be transmitted along generations. The mutated genes in irradiated males did not seem to significantly affect biological processes, except in one case (i.e., oxidative phosphorylation). Only in four cases (i.e., oxidative phosphorylation, UDP-glucose metabolic process, proton transmembrane transport and riboflavin metabolism) we found biological processes to be significantly affected by mutated genes that were likely transmitted to the male progeny. Our results suggest that random mutations induced by a sub-sterilizing dose of gamma ray in Ae. albopictus male pupae and transmitted to the male progeny of the irradiated mosquitoes do not affect biological processes potentially harmful, from a public-health point of view.
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Affiliation(s)
- Damiana Ravasi
- Department for Environment Constructions and Design, Vector Ecology Unit, Institute of Microbiology, University of Applied Sciences and Arts of Southern Switzerland, Via Flora Ruchat-Roncati 15, Mendrisio 6850, Switzerland.
| | - Pantelis Topalis
- Foundation for Research and Technology - Hellas, Institute of Molecular Biology and Biotechnology, Nikolaou Plastira 100, Crete, Heraklion GR-70013, Greece
| | - Arianna Puggioli
- Centro Agricoltura Ambiente "G. Nicoli", Via Sant'Agata 835, Crevalcore 40014, Italy
| | - Chiara Leo
- Polo d'Innovazione di Genomica, Genetica e Biologia S.r.l., Strada del Petriccio e Belriguardo 35, Siena 53100, Italy
| | - Eleonora Flacio
- Department for Environment Constructions and Design, Vector Ecology Unit, Institute of Microbiology, University of Applied Sciences and Arts of Southern Switzerland, Via Flora Ruchat-Roncati 15, Mendrisio 6850, Switzerland
| | - George Papagiannakis
- Foundation for Research and Technology - Hellas, Institute of Molecular Biology and Biotechnology, Nikolaou Plastira 100, Crete, Heraklion GR-70013, Greece
| | - Fabrizio Balestrino
- Centro Agricoltura Ambiente "G. Nicoli", Via Sant'Agata 835, Crevalcore 40014, Italy
| | - Margherita Martelli
- Polo d'Innovazione di Genomica, Genetica e Biologia S.r.l., Strada del Petriccio e Belriguardo 35, Siena 53100, Italy
| | - Romeo Bellini
- Centro Agricoltura Ambiente "G. Nicoli", Via Sant'Agata 835, Crevalcore 40014, Italy
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V FA, Gil S R, A S, G M, Schneider MI. Evaluation of imidacloprid (Confidor OD®) genotoxicity in Chrysoperla externa eggs (Neuroptera: Chrysopidae) through comet assay. CHEMOSPHERE 2024; 356:141819. [PMID: 38575080 DOI: 10.1016/j.chemosphere.2024.141819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 03/17/2024] [Accepted: 03/25/2024] [Indexed: 04/06/2024]
Abstract
The comet assay allows the analysis of DNA damage caused by different genotoxins. This assay has recently gained interest because of its ease of studying the interactions of xenobiotics with different organisms. Chrysoperla externa (Hagen, 1861) is a species of great economic relevance because it is a predator of major agricultural pests during its larval stage. Neonicotinoids are the most important chemical class of insecticides introduced into markets. A previous imidacloprid toxicity assessment on C. externa showed that this neonicotinoid insecticide reduced the egg viability. The objective of this study was to analyze the genotoxicity of Confidor OD® (imidacloprid 20% a.i., LS, Bayer CropScience) on the biological control agent C. externa at DNA level using the comet assay as an ecotoxicological biomarker. A comet assay protocol has been developed for this species at first time. For the bioassays, the commercial product formulated Confidor OD® was used at two concentrations: 100 and 180 mg/l of the active ingredient. Selected eggs were dipped in a Confidor OD® solution for 15 s. Descriptors evaluated in the comet assay were damage index, % DNA damage, and tail length. The damage index did not show any significant differences between the different concentrations evaluated, but differences were observed for tail length, because at higher concentrations of Confidor OD®, there were greater DNA breaks. The DNA of the cells from treated eggs analyzed at 48 h and 96 h of development showed the same % DNA damage; that is, they had no recovery capacity. Application of Confidor OD® to C. externa eggs produced irreparable breaks at the DNA level. The technique adjusted for C. externa can be used in other beneficial insects to study pesticide genotoxicity using a comet assay.
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Affiliation(s)
- Fernández Acevedo V
- Centro de Estudios Parasitológicos y de Vectores, CONICET-UNLP CICPBA. Boulevard 120 s/n entre Av. 60 y Calle 64. La Plata (1900), Argentina.
| | - Rodriguez Gil S
- Centro de Estudios Parasitológicos y de Vectores, CONICET-UNLP CICPBA. Boulevard 120 s/n entre Av. 60 y Calle 64. La Plata (1900), Argentina
| | - Seoane A
- .Instituto de Genética Veterinaria, CONICET-UNLP. Avenida 60 y 118 S/N (1900) La Plata, Argentina
| | - Minardi G
- Centro de Estudios Parasitológicos y de Vectores, CONICET-UNLP CICPBA. Boulevard 120 s/n entre Av. 60 y Calle 64. La Plata (1900), Argentina
| | - M I Schneider
- Centro de Estudios Parasitológicos y de Vectores, CONICET-UNLP CICPBA. Boulevard 120 s/n entre Av. 60 y Calle 64. La Plata (1900), Argentina
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Pradhan SK, Karuppannasamy A, Sujatha PM, Nagaraja BC, Narayanappa AC, Chalapathi P, Dhawane Y, Bynakal S, Riegler M, Maligeppagol M, Ramasamy A. Embryonic microinjection of ribonucleoprotein complex (Cas9+sgRNA) of white gene in melon fly, Zeugodacus cucurbitae (Coquillett) (Diptera: Tephritidae) produced white eye phenotype. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2023; 114:e22059. [PMID: 37844014 DOI: 10.1002/arch.22059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 09/06/2023] [Accepted: 10/09/2023] [Indexed: 10/18/2023]
Abstract
Melon fly, Zeugodacus cucurbitae (Coquillett) is a major pest of cucurbitaceous crops, and causes substantial yield losses and economic costs. CRISPR/Cas9 is a rapid and effective site-specific genome editing tool for the generation of genetic changes that are stable and heritable. The CRISPR/Cas9 tool uses synthetically designed single guide RNA (sgRNA) that is complementary to the target gene and guides the Cas9 enzyme to perform nuclease activity by making double-strand breaks in the target DNA sequences. This tool can be effectively exploited to improve traits critical for the management of insect pests by targeting specific genes encoding these traits without the need of extensive genetic information. The white gene is an important gene responsible for the transport of body pigment precursor molecules. In this study, we produced effective mutagenesis of the white gene of Z. cucurbitae using the CRISPR/Cas9 tool with double sgRNA to target multiple sites of white to increase the efficiency in the generation of frame-shift mutations resulting in the white eye phenotype in adults. This was achieved through embryonic microinjection of the ribonucleoprotein (RNP) complex in the pre-blastoderm embryo stage 1 h after embryo laying. Our success with the production of a white eye mutant fly by CRISPR/Cas9 mutagenesis is important for the research on gene function and protein-level modifications in melon fly and forms the basis for the development of new genetic control strategies such as precision guided sterile insect technique (pgSIT) for this pest of economic significance.
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Affiliation(s)
- Sanjay Kumar Pradhan
- Division of Basic Sciences, ICAR-Indian Institute of Horticultural Research, Bengaluru, India
- Department of Agricultural Entomology, University of Agricultural Sciences, Bengaluru, India
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia
| | - Ashok Karuppannasamy
- Division of Basic Sciences, ICAR-Indian Institute of Horticultural Research, Bengaluru, India
- Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore, India
| | - Parvathy Madhusoodanan Sujatha
- Division of Basic Sciences, ICAR-Indian Institute of Horticultural Research, Bengaluru, India
- Department of Plant Biotechnology, University of Agricultural Sciences, Bengaluru, India
| | - Bhargava Chikmagalur Nagaraja
- Division of Basic Sciences, ICAR-Indian Institute of Horticultural Research, Bengaluru, India
- Department of Agricultural Entomology, University of Agricultural Sciences, Bengaluru, India
| | - Anu Cholenahalli Narayanappa
- Division of Basic Sciences, ICAR-Indian Institute of Horticultural Research, Bengaluru, India
- Department of Agricultural Entomology, University of Agricultural Sciences, Bengaluru, India
| | - Pradeep Chalapathi
- Division of Basic Sciences, ICAR-Indian Institute of Horticultural Research, Bengaluru, India
- Department of Plant Biotechnology, University of Agricultural Sciences, Bengaluru, India
| | - Yogi Dhawane
- Division of Basic Sciences, ICAR-Indian Institute of Horticultural Research, Bengaluru, India
| | - Shivanna Bynakal
- Department of Agricultural Entomology, University of Agricultural Sciences, Bengaluru, India
| | - Markus Riegler
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, New South Wales, Australia
| | - Manamohan Maligeppagol
- Division of Basic Sciences, ICAR-Indian Institute of Horticultural Research, Bengaluru, India
| | - Asokan Ramasamy
- Division of Basic Sciences, ICAR-Indian Institute of Horticultural Research, Bengaluru, India
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Printzell L, Reseland JE, Edin NFJ, Ellingsen JE, Tiainen H. Backscatter from therapeutic doses of ionizing irradiation does not impair cell migration on titanium implants in vitro. Clin Oral Investig 2023; 27:5073-5082. [PMID: 37410152 PMCID: PMC10492688 DOI: 10.1007/s00784-023-05128-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 06/20/2023] [Indexed: 07/07/2023]
Abstract
OBJECTIVE The influence of radiation backscatter from titanium on DNA damage and migration capacity of human osteoblasts (OBs) and mesenchymal stem cells (MSCs) may be critical for the osseointegration of dental implants placed prior to radiotherapy. In order to evaluate effects of radiation backscatter, the immediate DNA damage and migration capacity of OBs and MSCs cultured on titanium or plastic were compared after exposure to ionizing irradiation. MATERIALS AND METHODS Human OBs and MSCs were seeded on machined titanium, moderately rough fluoride-modified titanium, or tissue culture polystyrene, and irradiated with nominal doses of 2, 6, 10, or 14 Gy. Comet assay was performed immediately after irradiation, while a scratch wound healing assay was initiated 24 h post-irradiation. Fluorescent live cell imaging documented the migration. RESULTS DNA damage increased with higher dose and with backscatter from titanium, and MSCs were significantly more affected than OBs. All doses of radiation accelerated the cell migration on plastic, while only the highest dose of 10 Gy inhibited the migration of both cell types on titanium. CONCLUSIONS High doses (10 Gy) of radiation inhibited the migration capacity of both cell types on titanium, whereas lower doses (2 and 6 Gy) did not affect the migration of either OBs or MSCs. CLINICAL RELEVANCE Fractionated doses of 2 Gy/day, as distributed in conventional radiotherapy, appear not to cause severe DNA damage or disturb the migration of OBs or MSCs during osseointegration of dental implants.
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Affiliation(s)
- Lisa Printzell
- Department of Prosthodontics, Institute of Clinical Dentistry, Faculty for Dentistry, University of Oslo, PO box 1109, 0317, Blindern, Oslo, Norway.
| | - Janne Elin Reseland
- Department of Biomaterials, Institute of Clinical Dentistry, Faculty for Dentistry, University of Oslo, Oslo, Norway
| | | | - Jan Eirik Ellingsen
- Department of Prosthodontics, Institute of Clinical Dentistry, Faculty for Dentistry, University of Oslo, PO box 1109, 0317, Blindern, Oslo, Norway
| | - Hanna Tiainen
- Department of Biomaterials, Institute of Clinical Dentistry, Faculty for Dentistry, University of Oslo, Oslo, Norway
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Flynn JM, Hu KB, Clark AG. Three recent sex chromosome-to-autosome fusions in a Drosophila virilis strain with high satellite DNA content. Genetics 2023; 224:iyad062. [PMID: 37052958 PMCID: PMC10213488 DOI: 10.1093/genetics/iyad062] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 12/02/2022] [Accepted: 04/07/2023] [Indexed: 04/14/2023] Open
Abstract
The karyotype, or number and arrangement of chromosomes, has varying levels of stability across both evolution and disease. Karyotype changes often originate from DNA breaks near the centromeres of chromosomes, which generally contain long arrays of tandem repeats or satellite DNA. Drosophila virilis possesses among the highest relative satellite abundances of studied species, with almost half its genome composed of three related 7 bp satellites. We discovered a strain of D. virilis that we infer recently underwent three independent chromosome fusion events involving the X and Y chromosomes, in addition to one subsequent fission event. Here, we isolate and characterize the four different karyotypes we discovered in this strain which we believe demonstrates remarkable genome instability. We discovered that one of the substrains with an X-autosome fusion has an X-to-Y chromosome nondisjunction rate 20 × higher than the D. virilis reference strain (21% vs 1%). Finally, we found an overall higher rate of DNA breakage in the substrain with higher satellite DNA compared to a genetically similar substrain with less satellite DNA. This suggests that satellite DNA abundance may play a role in the risk of genome instability. Overall, we introduce a novel system consisting of a single strain with four different karyotypes, which we believe will be useful for future studies of genome instability, centromere function, and sex chromosome evolution.
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Affiliation(s)
- Jullien M Flynn
- Department of Molecular Biology and Genetics, Cornell University, Biotechnology Building Room 227, Ithaca, NY 14853, USA
| | - Kevin B Hu
- Department of Molecular Biology and Genetics, Cornell University, Biotechnology Building Room 227, Ithaca, NY 14853, USA
| | - Andrew G Clark
- Department of Molecular Biology and Genetics, Cornell University, Biotechnology Building Room 227, Ithaca, NY 14853, USA
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Pan L, Wu Q, Wang Y, Ma S, Zhang S. Characterization and mechanisms of radioresistant lung squamous cell carcinoma cell lines. Thorac Cancer 2023; 14:1239-1250. [PMID: 37028947 PMCID: PMC10175036 DOI: 10.1111/1759-7714.14865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 03/07/2023] [Accepted: 03/08/2023] [Indexed: 04/09/2023] Open
Abstract
BACKGROUND Radiotherapy is an important clinical treatment for patients with lung squamous cell carcinoma (LUSC), and resistance to radiotherapy is an important cause of recurrence and metastasis in LUSC. The aim of this study was to establish and explore the biological characteristics of radioresistant LUSC cells. MATERIALS AND METHODS The LUSC cell lines NCI-H2170 and NCI-H520 were irradiated (4 Gy × 15Fraction). Radiosensitivity, cell apoptosis, cell cycle, and DNA damage repair were measured by clonogenic survival assay, flow cytometry, immunofluorescence for γ-H2AX foci, and Comet assay, respectively. Activation of p-ATM(Ser1981), p-CHK2(Th68), p-DNA-PKcs (Ser2056), and Ku70/Ku80 was measured by western blot. Proteomics was used to explore the differential genes and enriched signaling pathways between radioresistant cell lines and parental lines. In vivo nude mouse xenograft experiments further verified the feasibility of the radioresistant LUSC cell lines. RESULTS After fractionated irradiation (total dose of 60 Gy), radioresistant cells had decreased radiosensitivity, increased G0/G1 phase arrest, enhanced DNA damage repair ability, and through the ATM/CHK2 and DNA-PKcs/Ku70 pathways regulated double strands break. The upregulated differential genes in radioresistant cell lines were mainly enriched in biological pathways such as cell migration and extracellular matrix (ECM)-receptor interaction. In vivo verification of decreased radiosensitivity of radioresistant cells CONCLUSIONS: Radioresistant LUSC cell lines were established by fractional radiotherapy, which regulates IR-induced DNA damage repair through ATM/CHK2 and DNA-PKcs/Ku70. Tandem Mass Tags (TMT) quantitative proteomics found that the biological process pathway of cell migration and ECM-receptor interaction are upregulated in LUSC radioresistant cells.
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Affiliation(s)
- Lifang Pan
- Department of the Fourth Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Qiong Wu
- Department of Integrated Chinese and Western Medicine, The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou, China
| | - Yuqing Wang
- Department of Translational Medicine Research Center, Key Laboratory of Clinical Cancer Pharmacology and Toxicology Research of Zhejiang Province, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Shenglin Ma
- Department of the Fourth Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
- Department of Oncology, Affiliated Hangzhou Cancer Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Shirong Zhang
- Department of Translational Medicine Research Center, Key Laboratory of Clinical Cancer Pharmacology and Toxicology Research of Zhejiang Province, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Yamada H, Kaboré BA, Bimbilé Somda NS, Ntoyi NL, de Beer CJ, Bouyer J, Caceres C, Mach RL, Gómez-Simuta Y. Suitability of Raycell MK2 Blood X-ray Irradiator for the Use in the Sterile Insect Technique: Dose Response in Fruit Flies, Tsetse Flies and Mosquitoes. INSECTS 2023; 14:92. [PMID: 36662020 PMCID: PMC9861990 DOI: 10.3390/insects14010092] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/04/2023] [Accepted: 01/05/2023] [Indexed: 06/17/2023]
Abstract
The sterile insect technique (SIT) is based on the inundatory field release of a target pest following their reproductive sterilization via exposure to radiation. Until recently, gamma irradiation from isotopic sources has been the most widely used in SIT programs. As isotopic sources are becoming increasingly expensive, especially for small programs, and regulations surrounding their procurement and shipment increasingly strict, irradiation capacity is one of the limiting factors in smaller or newly developing SIT projects. For this reason, the possibility of using X-ray irradiators has been evaluated in the recent decade. The availability of "off-the-shelf" blood X-ray irradiators that meet the technical requirements for insect irradiation can provide irradiation capacity for those SIT projects in which the acquisition of gamma ray irradiators is not feasible. Following the recent technical characterization of a Raycell MK2 X-ray blood irradiator, it was found in this study, that MK2 instruments were suitable for the sterilization of fruit flies, tsetse flies and mosquitoes, inducing comparable, even slightly higher, sterility levels compared to those achieved by gamma ray irradiation. This, together with its estimated processing efficiency, shows that MK2 irradiators are suitable for small- to mid-sized SIT programs.
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Affiliation(s)
- Hanano Yamada
- Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna International Centre, 1400 Vienna, Austria
| | - Bénéwendé Aristide Kaboré
- Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna International Centre, 1400 Vienna, Austria
- Institute of Chemical, Environmental and Bioscience Engineering, Vienna University of Technology, Gumpendorfer Straße 1a, 1060 Vienna, Austria
- Insectarium de Bobo-Dioulasso-Campagne d’Eradication de la mouche Tsétsé et de la Trypanosomose, Bobo-Dioulasso BP 1087, Burkina Faso
| | - Nanwintoum Séverin Bimbilé Somda
- Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna International Centre, 1400 Vienna, Austria
- Unité de Formation et de Recherche en Science et Technologie (UFR/ST), Université Norbert ZONGO (UNZ), Koudougou BP 376, Burkina Faso
| | - Nonhlanhla L. Ntoyi
- Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna International Centre, 1400 Vienna, Austria
- Vector Reference Laboratory, National Health Laboratory Services, Centre for Emerging Zoonotic and Parasitic Diseases, National Institute for Communicable Diseases, Johannesburg 2192, South Africa
| | - Chantel Janet de Beer
- Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna International Centre, 1400 Vienna, Austria
| | - Jérémy Bouyer
- Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna International Centre, 1400 Vienna, Austria
| | - Carlos Caceres
- Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna International Centre, 1400 Vienna, Austria
| | - Robert L. Mach
- Institute of Chemical, Environmental and Bioscience Engineering, Vienna University of Technology, Gumpendorfer Straße 1a, 1060 Vienna, Austria
| | - Yeudiel Gómez-Simuta
- Programa Operativo Moscas, IICA-SENASICA Km 19.5, Carretera Tapachula-Ciudad Hidalgo, Metapa de Dominguez 30860, Chiapas, Mexico
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Ranathunge T, Harishchandra J, Maiga H, Bouyer J, Gunawardena YINS, Hapugoda M. Development of the Sterile Insect Technique to control the dengue vector Aedes aegypti (Linnaeus) in Sri Lanka. PLoS One 2022; 17:e0265244. [PMID: 35377897 PMCID: PMC8979456 DOI: 10.1371/journal.pone.0265244] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Accepted: 02/24/2022] [Indexed: 11/17/2022] Open
Abstract
Background The Sterile Insect Technique (SIT) is presently being tested to control dengue in several countries. SIT aims to cause the decline of the target insect population through the release of a sufficient number of sterilized male insects. This induces sterility in the female population, as females that mate with sterilized males produce no offspring. Male insects are sterilized through the use of ionizing irradiation. This study aimed to evaluate variable parameters that may affect irradiation in mosquito pupae. Methods An Ae. aegypti colony was maintained under standard laboratory conditions. Male and female Ae. aegypti pupae were separated using a Fay and Morlan glass sorter and exposed to different doses of gamma radiation (40, 50, 60, 70 and 80 Gy) using a Co60 source. The effects of radiation on survival, flight ability and the reproductive capacity of Ae. aegypti were evaluated under laboratory conditions. In addition, mating competitiveness was evaluated for irradiated male Ae. aegypti mosquitoes to be used for future SIT programmes in Sri Lanka. Results Survival of irradiated pupae was reduced by irradiation in a dose-dependent manner but it was invariably greater than 90% in control, 40, 50, 60, 70 Gy in both male and female Ae. aegypti. Irradiation didn’t show any significant adverse effects on flight ability of male and female mosquitoes, which consistently exceeded 90%. A similar number of eggs per female was observed between the non-irradiated groups and the irradiated groups for both irradiated males and females. Egg hatch rates were significantly lower when an irradiation dose above 50 Gy was used as compared to 40 Gy in both males and females. Irradiation at higher doses significantly reduced male and female survival when compared to the non-irradiated Ae. aegypti mosquitoes. Competitiveness index (C) scores of sterile and non-sterile males compared with non-irradiated male mosquitoes under laboratory and semi-field conditions were 0.56 and 0.51 respectively at 50 Gy. Signification Based on the results obtained from the current study, a 50 Gy dose was selected as the optimal radiation dose for the production of sterile Ae. aegypti males for future SIT-based dengue control programmes aiming at the suppression of Ae. aegypti populations in Sri Lanka.
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Affiliation(s)
- Tharaka Ranathunge
- Molecular Medicine Unit, Faculty of Medicine University of Kelaniya, Colombo, Sri Lanka.,Department of Biomedical Sciences, Faculty of Health Sciences, CINEC Campus, Malabe, Sri Lanka
| | - Jeevanie Harishchandra
- Anti-Malaria Campaign (AMC) Public Health Complex, Ministry of Health, Colombo, Sri Lanka
| | - Hamidou Maiga
- Insect Pest Control Subprogramme, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Department of Nuclear Sciences and Applications, International Atomic Energy Agency, Vienna, Austria
| | - Jeremy Bouyer
- Insect Pest Control Subprogramme, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Department of Nuclear Sciences and Applications, International Atomic Energy Agency, Vienna, Austria
| | | | - Menaka Hapugoda
- Molecular Medicine Unit, Faculty of Medicine University of Kelaniya, Colombo, Sri Lanka
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Yamada H, Dias VS, Parker AG, Maiga H, Kraupa C, Vreysen MJB, Mamai W, Schetelig MF, Somda NSB, Bouyer J. Radiation dose-rate is a neglected critical parameter in dose-response of insects. Sci Rep 2022; 12:6242. [PMID: 35422488 PMCID: PMC9010456 DOI: 10.1038/s41598-022-10027-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 03/31/2022] [Indexed: 11/11/2022] Open
Abstract
Reproductive sterility is the basis of the sterile insect technique (SIT) and essential for its success in the field. Numerous factors that influence dose–response in insects have been identified. However, historically the radiation dose administered has been considered a constant. Efforts aiming to standardize protocols for mosquito irradiation found that, despite carefully controlling many variable factors, there was still an unknown element responsible for differences in expected sterility levels of insects irradiated with the same dose and handling protocols. Thus, together with previous inconclusive investigations, the question arose whether dose really equals dose in terms of biological response, no matter the rate at which the dose is administered. Interestingly, the dose rate effects studied in human nuclear medicine indicated that dose rate could alter dose–response in mammalian cells. Here, we conducted experiments to better understand the interaction of dose and dose rate to assess the effects in irradiated mosquitoes. Our findings suggest that not only does dose rate alter irradiation-induced effects, but that the interaction is not linear and may change with dose. We speculate that the recombination of reactive oxygen species (ROS) in treatments with moderate to high dose rates might minimize indirect radiation-induced effects in mosquitoes and decrease sterility levels, unless dose along with its direct effects is increased. Together with further studies to identify an optimum match of dose and dose rate, these results could assist in the development of improved methods for the production of high-quality sterile mosquitoes to enhance the efficiency of SIT programs.
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Affiliation(s)
- Hanano Yamada
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Friedensstrasse 1, 2444, Seibersdorf, Austria. .,Department for Insect Biotechnology, Justus-Liebig-University Gießen, Winchester Str. 2, 35394, Gießen, Germany.
| | - Vanessa S Dias
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Friedensstrasse 1, 2444, Seibersdorf, Austria.
| | - Andrew G Parker
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Friedensstrasse 1, 2444, Seibersdorf, Austria.,, Roppersbergweg 15, 2381, Laab im Walde, Austria
| | - Hamidou Maiga
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Friedensstrasse 1, 2444, Seibersdorf, Austria
| | - Carina Kraupa
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Friedensstrasse 1, 2444, Seibersdorf, Austria
| | - Marc J B Vreysen
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Friedensstrasse 1, 2444, Seibersdorf, Austria
| | - Wadaka Mamai
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Friedensstrasse 1, 2444, Seibersdorf, Austria
| | - Marc F Schetelig
- Department for Insect Biotechnology, Justus-Liebig-University Gießen, Winchester Str. 2, 35394, Gießen, Germany
| | - Nanwintoum S Bimbilé Somda
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Friedensstrasse 1, 2444, Seibersdorf, Austria
| | - Jeremy Bouyer
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Friedensstrasse 1, 2444, Seibersdorf, Austria
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Kang S, Guo Z, Zhao F, Song L, Lu L, Wang C, Liu Z, Zhao J. Lanzhou Lily polysaccharide fragment protects human umbilical vein endothelial cells from radiation-induced DNA double-strand breaks. Hum Exp Toxicol 2022; 41:9603271221140110. [DOI: 10.1177/09603271221140110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Radiotherapy is widely used in the treatment of tumors. However, while killing tumor cells, radiation may also cause damage to the surrounding normal tissues. Therefore, it is very important to find safe and effective radiation protection agents. Purpose To investgate the radiation protection effect of Lanzhou Lily polysaccharide fragments (LLP). Methods: The crude polysaccharides of Lanzhou Lily were extracted from the dried bulb powder of Lilium lilium by ultrasonic-assisted hot water method, and then five different fragments were separated from the polysaccharides by DEAE-52-cellulose column. The 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide assay, neutral comet and immunofluorescent staining were used to investigate the effect of LPe fragment on Human Umbilical Vein Endothelial Cells (HUVEC) survival and the possible radioprotective mechanism. Results The LPe fragment (composing of mannose and glucose, with a ratio of 5.5:2.9, and the average molecular weight is 8629.8 Da), significantly promoted the proliferation of HUVECs and protected cells from X-ray-induced double-strand breaks (DSBs) in DNA, in which pretreatment with the LPe fragment at 100 μg/mL showed the most pronounced protection. In addition, the occurrence of X-ray-induced γH2AX foci was significantly reduced by treatment with the LPe fragment at 50, 100, and 200 μg/mL. Furthermore, caffeine or wortmannin in combination with the LPe fragment at 25 μg/mL significantly reduced the number of X-ray-induced γH2AX foci, indicating phosphoinositide-3 kinases (PI3K) is involved in H2AX phosphorylation in HUVECs. Conclusion These results indicate the LPe fragment has a protective effect against radiation-induced DSBs and may be used as a natural antioxidant agent.
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Affiliation(s)
- S Kang
- School of Chemical Engineering, Northwest Minzu University, Lanzhou, China
- Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in Universities of Gansu Province, Lanzhou, China
| | - Z Guo
- Medical College of Northwest Minzu University, Lanzhou, China
- Key Laboratory of Environmental Ecology and Population Health in Northwest Minority Areas, Medical College of Northwest Minzu University, Lanzhou, China
| | - F Zhao
- Medical College of Northwest Minzu University, Lanzhou, China
| | - L Song
- Key Laboratory of Environmental Ecology and Population Health in Northwest Minority Areas, Medical College of Northwest Minzu University, Lanzhou, China
| | - L Lu
- School of Chemical Engineering, Northwest Minzu University, Lanzhou, China
- Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in Universities of Gansu Province, Lanzhou, China
| | - C Wang
- Medical College of Northwest Minzu University, Lanzhou, China
| | - Z Liu
- School of Chemical Engineering, Northwest Minzu University, Lanzhou, China
- Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in Universities of Gansu Province, Lanzhou, China
| | - J Zhao
- Medical College of Northwest Minzu University, Lanzhou, China
- Key Laboratory of Environmental Ecology and Population Health in Northwest Minority Areas, Medical College of Northwest Minzu University, Lanzhou, China
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11
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Tsakanova G, Babayan N, Karalova E, Hakobyan L, Abroyan L, Avetisyan A, Avagyan H, Hakobyan S, Poghosyan A, Baghdasaryan B, Arakelova E, Ayvazyan V, Matevosyan L, Navasardyan A, Davtyan H, Apresyan L, Yeremyan A, Aroutiounian R, Osipov AN, Grigoryan B, Karalyan Z. Low-Energy Laser-Driven Ultrashort Pulsed Electron Beam Irradiation-Induced Immune Response in Rats. Int J Mol Sci 2021; 22:ijms222111525. [PMID: 34768958 PMCID: PMC8584044 DOI: 10.3390/ijms222111525] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 10/18/2021] [Accepted: 10/20/2021] [Indexed: 11/16/2022] Open
Abstract
The development of new laser-driven electron linear accelerators, providing unique ultrashort pulsed electron beams (UPEBs) with low repetition rates, opens new opportunities for radiotherapy and new fronts for radiobiological research in general. Considering the growing interest in the application of UPEBs in radiation biology and medicine, the aim of this study was to reveal the changes in immune system in response to low-energy laser-driven UPEB whole-body irradiation in rodents. Forty male albino Wistar rats were exposed to laser-driven UPEB irradiation, after which different immunological parameters were studied on the 1st, 3rd, 7th, 14th, and 28th day after irradiation. According to the results, this type of irradiation induces alterations in the rat immune system, particularly by increasing the production of pro- and anti-inflammatory cytokines and elevating the DNA damage rate. Moreover, such an immune response reaches its maximal levels on the third day after laser-driven UPEB whole-body irradiation, showing partial recovery on subsequent days with a total recovery on the 28th day. The results of this study provide valuable insight into the effect of laser-driven UPEB whole-body irradiation on the immune system of the animals and support further animal experiments on the role of this novel type of irradiation.
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Affiliation(s)
- Gohar Tsakanova
- Institute of Molecular Biology NAS RA, Yerevan 0014, Armenia; (N.B.); (E.K.); (L.H.); (L.A.); (A.A.); (H.A.); (S.H.); (A.P.); (B.B.); (E.A.); (V.A.); (L.M.); (L.A.); (R.A.); (Z.K.)
- CANDLE Synchrotron Research Institute, Yerevan 0040, Armenia; (A.N.); (H.D.); (A.Y.); (B.G.)
- Correspondence: ; Tel.: +374-941-23070
| | - Nelly Babayan
- Institute of Molecular Biology NAS RA, Yerevan 0014, Armenia; (N.B.); (E.K.); (L.H.); (L.A.); (A.A.); (H.A.); (S.H.); (A.P.); (B.B.); (E.A.); (V.A.); (L.M.); (L.A.); (R.A.); (Z.K.)
- Department of Genetics and Cytology, Faculty of Biology, Yerevan State University, Yerevan 0025, Armenia
| | - Elena Karalova
- Institute of Molecular Biology NAS RA, Yerevan 0014, Armenia; (N.B.); (E.K.); (L.H.); (L.A.); (A.A.); (H.A.); (S.H.); (A.P.); (B.B.); (E.A.); (V.A.); (L.M.); (L.A.); (R.A.); (Z.K.)
- Experimental Laboratory, Yerevan State Medical University after Mkhitar Heratsi, Yerevan 0025, Armenia
| | - Lina Hakobyan
- Institute of Molecular Biology NAS RA, Yerevan 0014, Armenia; (N.B.); (E.K.); (L.H.); (L.A.); (A.A.); (H.A.); (S.H.); (A.P.); (B.B.); (E.A.); (V.A.); (L.M.); (L.A.); (R.A.); (Z.K.)
| | - Liana Abroyan
- Institute of Molecular Biology NAS RA, Yerevan 0014, Armenia; (N.B.); (E.K.); (L.H.); (L.A.); (A.A.); (H.A.); (S.H.); (A.P.); (B.B.); (E.A.); (V.A.); (L.M.); (L.A.); (R.A.); (Z.K.)
| | - Aida Avetisyan
- Institute of Molecular Biology NAS RA, Yerevan 0014, Armenia; (N.B.); (E.K.); (L.H.); (L.A.); (A.A.); (H.A.); (S.H.); (A.P.); (B.B.); (E.A.); (V.A.); (L.M.); (L.A.); (R.A.); (Z.K.)
- Experimental Laboratory, Yerevan State Medical University after Mkhitar Heratsi, Yerevan 0025, Armenia
| | - Hranush Avagyan
- Institute of Molecular Biology NAS RA, Yerevan 0014, Armenia; (N.B.); (E.K.); (L.H.); (L.A.); (A.A.); (H.A.); (S.H.); (A.P.); (B.B.); (E.A.); (V.A.); (L.M.); (L.A.); (R.A.); (Z.K.)
- Experimental Laboratory, Yerevan State Medical University after Mkhitar Heratsi, Yerevan 0025, Armenia
| | - Sona Hakobyan
- Institute of Molecular Biology NAS RA, Yerevan 0014, Armenia; (N.B.); (E.K.); (L.H.); (L.A.); (A.A.); (H.A.); (S.H.); (A.P.); (B.B.); (E.A.); (V.A.); (L.M.); (L.A.); (R.A.); (Z.K.)
| | - Arpine Poghosyan
- Institute of Molecular Biology NAS RA, Yerevan 0014, Armenia; (N.B.); (E.K.); (L.H.); (L.A.); (A.A.); (H.A.); (S.H.); (A.P.); (B.B.); (E.A.); (V.A.); (L.M.); (L.A.); (R.A.); (Z.K.)
| | - Bagrat Baghdasaryan
- Institute of Molecular Biology NAS RA, Yerevan 0014, Armenia; (N.B.); (E.K.); (L.H.); (L.A.); (A.A.); (H.A.); (S.H.); (A.P.); (B.B.); (E.A.); (V.A.); (L.M.); (L.A.); (R.A.); (Z.K.)
| | - Elina Arakelova
- Institute of Molecular Biology NAS RA, Yerevan 0014, Armenia; (N.B.); (E.K.); (L.H.); (L.A.); (A.A.); (H.A.); (S.H.); (A.P.); (B.B.); (E.A.); (V.A.); (L.M.); (L.A.); (R.A.); (Z.K.)
- CANDLE Synchrotron Research Institute, Yerevan 0040, Armenia; (A.N.); (H.D.); (A.Y.); (B.G.)
| | - Violetta Ayvazyan
- Institute of Molecular Biology NAS RA, Yerevan 0014, Armenia; (N.B.); (E.K.); (L.H.); (L.A.); (A.A.); (H.A.); (S.H.); (A.P.); (B.B.); (E.A.); (V.A.); (L.M.); (L.A.); (R.A.); (Z.K.)
| | - Lusine Matevosyan
- Institute of Molecular Biology NAS RA, Yerevan 0014, Armenia; (N.B.); (E.K.); (L.H.); (L.A.); (A.A.); (H.A.); (S.H.); (A.P.); (B.B.); (E.A.); (V.A.); (L.M.); (L.A.); (R.A.); (Z.K.)
- CANDLE Synchrotron Research Institute, Yerevan 0040, Armenia; (A.N.); (H.D.); (A.Y.); (B.G.)
| | - Arpine Navasardyan
- CANDLE Synchrotron Research Institute, Yerevan 0040, Armenia; (A.N.); (H.D.); (A.Y.); (B.G.)
| | - Hakob Davtyan
- CANDLE Synchrotron Research Institute, Yerevan 0040, Armenia; (A.N.); (H.D.); (A.Y.); (B.G.)
| | - Lilit Apresyan
- Institute of Molecular Biology NAS RA, Yerevan 0014, Armenia; (N.B.); (E.K.); (L.H.); (L.A.); (A.A.); (H.A.); (S.H.); (A.P.); (B.B.); (E.A.); (V.A.); (L.M.); (L.A.); (R.A.); (Z.K.)
| | - Arsham Yeremyan
- CANDLE Synchrotron Research Institute, Yerevan 0040, Armenia; (A.N.); (H.D.); (A.Y.); (B.G.)
| | - Rouben Aroutiounian
- Institute of Molecular Biology NAS RA, Yerevan 0014, Armenia; (N.B.); (E.K.); (L.H.); (L.A.); (A.A.); (H.A.); (S.H.); (A.P.); (B.B.); (E.A.); (V.A.); (L.M.); (L.A.); (R.A.); (Z.K.)
- Department of Genetics and Cytology, Faculty of Biology, Yerevan State University, Yerevan 0025, Armenia
| | - Andreyan N. Osipov
- Group for Radiation Biochemistry of Nucleic Acids, N.N. Semenov Federal Research for Chemical Physics, Russian Academy of Sciences, 119991 Moscow, Russia;
- Laboratory for the Development of Innovative Drugs and Agricultural Biotechnology, Moscow Institute of Physics and Technology, 141701 Moscow, Russia
- Experimental Radiobiology and Radiation Medicine Department, State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency, 123098 Moscow, Russia
| | - Bagrat Grigoryan
- CANDLE Synchrotron Research Institute, Yerevan 0040, Armenia; (A.N.); (H.D.); (A.Y.); (B.G.)
| | - Zaven Karalyan
- Institute of Molecular Biology NAS RA, Yerevan 0014, Armenia; (N.B.); (E.K.); (L.H.); (L.A.); (A.A.); (H.A.); (S.H.); (A.P.); (B.B.); (E.A.); (V.A.); (L.M.); (L.A.); (R.A.); (Z.K.)
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12
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Shang Y, Wu M, Zhou J, Zhang X, Zhong Y, An J, Qian G. Cytotoxicity comparison between fine particles emitted from the combustion of municipal solid waste and biomass. JOURNAL OF HAZARDOUS MATERIALS 2019; 367:316-324. [PMID: 30599404 DOI: 10.1016/j.jhazmat.2018.12.065] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 12/04/2018] [Accepted: 12/17/2018] [Indexed: 05/05/2023]
Abstract
Fine particles (PM2.5) emitted from municipal solid waste incineration (MSWI) contain high amounts of toxic compounds and pose a serious threat to environment and human health. In this study, entire particles as well as extracted water-soluble and -insoluble fractions of PM2.5 collected from MSWI and biomass incineration (BMI) were subjected to physiochemical characterization and cytotoxic tests in A549 and BEAS-2B cells. MSWI PM2.5 had higher contents of heavy metals (including Pb, Zn, and Cu) and dioxins (PCDD/Fs) than did BMI PM2.5. The metals were enriched in the water-insoluble fraction, as measured by inductively coupled plasma-atomic emission spectrometry. BMI PM2.5 had a higher content of endotoxin, which was also enriched in the water-insoluble fraction. MSWI PM2.5 caused more serious cell injuries, as indicated by the lower viability, higher ROS generation, and DNA damage, whereas BMI PM2.5 presented higher pro-inflammatory potential, as indicated by increased mRNA levels of interleukin 6. Normal human BEAS-2B cells were more sensitive than A549 cells in all these tests. Toxic effects caused by MSWI and BMI PM2.5 were mostly attributable to their water-insoluble fractions. Our results indicate different chemical and biological compositions in MSWI and BMI PM2.5 probably dominate in different toxic endpoints in vitro.
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Affiliation(s)
- Yu Shang
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Meiying Wu
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Jizhi Zhou
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Xing Zhang
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Yufang Zhong
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Jing An
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Guangren Qian
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China.
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13
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Bond JG, Osorio AR, Avila N, Gómez-Simuta Y, Marina CF, Fernández-Salas I, Liedo P, Dor A, Carvalho DO, Bourtzis K, Williams T. Optimization of irradiation dose to Aedes aegypti and Ae. albopictus in a sterile insect technique program. PLoS One 2019; 14:e0212520. [PMID: 30779779 PMCID: PMC6380561 DOI: 10.1371/journal.pone.0212520] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 02/04/2019] [Indexed: 12/20/2022] Open
Abstract
The sterile insect technique (SIT) may offer a means to control the transmission of mosquito borne diseases. SIT involves the release of male insects that have been sterilized by exposure to ionizing radiation. We determined the effects of different doses of radiation on the survival and reproductive capacity of local strains of Aedes aegypti and Ae. albopictus in southern Mexico. The survival of irradiated pupae was invariably greater than 90% and did not differ significantly in either sex for either species. Irradiation had no significant adverse effects on the flight ability (capacity to fly out of a test device) of male mosquitoes, which consistently exceeded 91% in Ae. aegypti and 96% in Ae. albopictus. The average number of eggs laid per female was significantly reduced in Ae. aegypti at doses of 15 and 30 Gy and no eggs were laid by females that had been exposed to 50 Gy. Similarly, in Ae. albopictus, egg production was reduced at doses of 15 and 25 Gy and was eliminated at 35 Gy. In Ae. aegypti, fertility in males was eliminated at 70 Gy and was eliminated at 30 Gy in females, whereas in Ae. albopictus, the fertility of males that mated with untreated females was almost zero (0.1%) in the 50 Gy treatment and female fertility was eliminated at 35 Gy. Irradiation treatments resulted in reduced ovary length and fewer follicles in both species. The adult median survival time of both species was reduced by irradiation in a dose-dependent manner. However, sterilizing doses of 35 Gy and 50 Gy resulted in little reduction in survival times of males of Ae. albopictus and Ae. aegypti, respectively, indicating that these doses should be suitable for future evaluations of SIT-based control of these species. The results of the present study will be applied to studies of male sexual competitiveness and to stepwise evaluations of the sterile insect technique for population suppression of these vectors in Mexico.
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Affiliation(s)
- J. Guillermo Bond
- Centro Regional de Investigación en Salud Pública (CRISP-INSP), Tapachula, Chiapas, Mexico
| | - Adriana R. Osorio
- Centro Regional de Investigación en Salud Pública (CRISP-INSP), Tapachula, Chiapas, Mexico
| | - Nancy Avila
- Centro Regional de Investigación en Salud Pública (CRISP-INSP), Tapachula, Chiapas, Mexico
| | - Yeudiel Gómez-Simuta
- Programa Moscas de la Fruta (SAGARPA-IICA), Camino a Cacaotales S/N, Metapa de Domínguez, Chiapas, Mexico
| | - Carlos F. Marina
- Centro Regional de Investigación en Salud Pública (CRISP-INSP), Tapachula, Chiapas, Mexico
| | - Ildefonso Fernández-Salas
- Centro Regional de Investigación en Salud Pública (CRISP-INSP), Tapachula, Chiapas, Mexico
- Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, Nuevo León, Mexico
| | - Pablo Liedo
- El Colegio de la Frontera Sur, Tapachula, Chiapas, Mexico
| | - Ariane Dor
- El Colegio de la Frontera Sur, Tapachula, Chiapas, Mexico
| | - Danilo O. Carvalho
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, IAEA Laboratories, Seibersdorf, Austria
| | - Kostas Bourtzis
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, IAEA Laboratories, Seibersdorf, Austria
| | - Trevor Williams
- Instituto de Ecología AC (INECOL), Xalapa, Veracruz, Mexico
- * E-mail:
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14
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Gajski G, Žegura B, Ladeira C, Pourrut B, Del Bo’ C, Novak M, Sramkova M, Milić M, Gutzkow KB, Costa S, Dusinska M, Brunborg G, Collins A. The comet assay in animal models: From bugs to whales – (Part 1 Invertebrates). MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2019; 779:82-113. [DOI: 10.1016/j.mrrev.2019.02.003] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 02/07/2019] [Accepted: 02/09/2019] [Indexed: 01/09/2023]
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15
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Schizophyllum commune induced genotoxic and cytotoxic effects in Spodoptera litura. Sci Rep 2018; 8:4693. [PMID: 29549275 PMCID: PMC5856757 DOI: 10.1038/s41598-018-22919-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 03/01/2018] [Indexed: 12/14/2022] Open
Abstract
In search for ecofriendly alternatives to chemical insecticides the present study was conducted to assess the insecticidal potential of an endophytic fungus Schizophyllum commune and its mechanism of toxicity by studying genotoxic and cytotoxic effects as well as repair potential using Spodoptera litura (Fabricius) as a model. Different endophytic fungi were isolated and tested for their insecticidal potential against S. litura. Among the tested endophytic fungi maximum mortality against S. litura was exhibited by S. commune isolated from Aloe vera. Extended development, reduced adult emergence was observed in larvae fed on diet supplemented with fungal extract. In addition to it the fungus also has propensity to increase oxidative stress which leads to significantly higher DNA damage. The significantly lower frequency of living haemocytes and increased frequency of apoptotic and necrotic cells was also observed in larvae treated with fungal extract. The extent of recovery of damage caused by fungus was found to be very low indicating long term effect of treatment. Phytochemical analysis revealed the presence of various phenolics, terpenoids and protein in fungal extract. Biosafety analysis indicated the non toxic nature of extract. This is the first report showing the insecticidal potential of S. commune and the genotoxic and cytotoxic effects associated with it.
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