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Purificacion M, Shah RBM, De Meeûs T, Bakar SB, Savantil AB, Yusof MM, Amalin D, Nguyen H, Sulistyowati E, Budiman A, Ekayanti A, Niogret J, Ravel S, Vreysen MJB, Abd-Alla AMM. Development and characterization of microsatellite markers for population genetics of the cocoa pod borer Conopomorpha cramerella (Snellen) (Lepidoptera: Gracillaridae). PLoS One 2024; 19:e0297662. [PMID: 38603675 PMCID: PMC11008836 DOI: 10.1371/journal.pone.0297662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Accepted: 01/09/2024] [Indexed: 04/13/2024] Open
Abstract
The cocoa pod borer (CPB) Conopomorpha cramerella (Snellen) (Lepidoptera: Gracillaridae) is one of the major constraints for cocoa production in South East Asia. In addition to cultural and chemical control methods, autocidal control tactics such as the Sterile Insect Technique (SIT) could be an efficient addition to the currently control strategy, however SIT implementation will depend on the population genetics of the targeted pest. The aim of the present work was to search for suitable microsatellite loci in the genome of CPB that is partially sequenced. Twelve microsatellites were initially selected and used to analyze moths collected from Indonesia, Malaysia, and the Philippines. A quality control verification process was carried out and seven microsatellites found to be suitable and efficient to distinguish differences between CPB populations from different locations. The selected microsatellites were also tested against a closely related species, i.e. the lychee fruit borer Conopomorpha sinensis (LFB) from Vietnam and eight loci were found to be suitable. The availability of these novel microsatellite loci will provide useful tools for the analysis of the population genetics and gene flow of these pests, to select suitable CPB strains to implement the SIT.
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Affiliation(s)
- Marynold Purificacion
- Biological Control Research Unit, Center for Natural Science and Environmental Research, De La Salle University, Manila, Philippines
| | - Roslina Binti Mohd Shah
- Centre for Cocoa Biotechnology Research, Malaysian Cocoa Board, Kota Kinabalu, Sabah, Malaysia
| | - Thierry De Meeûs
- Intertryp, Univ Montpellier, Cirad, IRD, Montpellier, France
- IRD, UMR Intertryp, Cirad, Campus International de Baillarguet, Montpellier, France
| | | | - Anisah Bintil Savantil
- Centre for Cocoa Biotechnology Research, Malaysian Cocoa Board, Kota Kinabalu, Sabah, Malaysia
| | - Meriam Mohd Yusof
- Centre for Cocoa Biotechnology Research, Malaysian Cocoa Board, Kota Kinabalu, Sabah, Malaysia
| | - Divina Amalin
- Biological Control Research Unit, Center for Natural Science and Environmental Research, De La Salle University, Manila, Philippines
| | - Hien Nguyen
- Plant Protection Research Institute, Duc Thang, Hanoi, Vietnam
| | | | - Aris Budiman
- Indonesian Coffee and Cocoa Research Institute, Jember, Indonesia
| | - Arni Ekayanti
- Mars Cocoa Research Centre, Mars Wrigley, Sulawesi Selatan, Indonesia
| | - Jerome Niogret
- Mars Wrigley, Centre for Tropical Environmental & Sustainability Science, James Cook University Nguma-bada Campus, Smithfield, Australia
| | - Sophie Ravel
- Intertryp, Univ Montpellier, Cirad, IRD, Montpellier, France
| | - Marc J. B. Vreysen
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Vienna, Austria
| | - Adly M. M. Abd-Alla
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Vienna, Austria
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Nashandi HL, Monyeki AM, Reilly JJ. Association between Physical Activity and Health Outcomes (High Body Fatness, High Blood Pressure) in Namibian Adolescents and Adult women. Int J Environ Res Public Health 2024; 21:446. [PMID: 38673357 DOI: 10.3390/ijerph21040446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 03/24/2024] [Accepted: 04/04/2024] [Indexed: 04/28/2024]
Abstract
Regular physical activity (PA) is known to promote the physical and mental health of children and adolescents and further prevent the development of health problems in adulthood. Information on body composition and PA is crucial for health promotion strategies and for epidemiological studies informing policies. However, there is limited data on the association between body composition and PA in Namibia. This dearth of published data is a significant shortcoming in the development of strategies and policies to promote PA in Namibia. Therefore, this cross-sectional study was conducted to determine the association between PA as a dependent variable and independent variables such as high blood pressure and body fatness as measured by different methods (gold standard deuterium dilution, body mass index, mid upper arm circumference, and waist circumference). The study included 206 healthy adolescent girls aged 13-19 years and 207 young adult females aged 20-40 years from Windhoek, Namibia. PA was measured using the PACE+ questionnaire in adolescents, and the GPAQ questionnaire was used for adults. In adolescents, only 33% of the participants met the recommended guidelines for PA, compared to only 2% for adults. Nevertheless, the study found no statistically significant association between PA and blood pressure indices (p-value < 0.05) among adolescents and adults. However, there was a significant association between PA and high body fatness (p-value < 0.001) and waist circumference (p-value = 0.014) in adolescents. Among adults, PA was significantly related to waist circumference only. In conclusion, failure to meet recommended PA guidelines is strongly associated with abdominal obesity and high body fatness. The knowledge gained from this study may be used by policymakers in the development of strategic policies and interventions aimed at promoting PA as a public priority and improving health outcomes.
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Affiliation(s)
- Hilde Liisa Nashandi
- School of Nursing and Public Health, Faculty of Health Sciences and Veterinary Medicines, University of Namibia, Windhoek 10005, Namibia
- Physical Activity, Sport and Recreation Research Focus Area, Faculty of Health Sciences, North-West University, Potchefstroom 2520, South Africa
| | - Andries Makama Monyeki
- Physical Activity, Sport and Recreation Research Focus Area, Faculty of Health Sciences, North-West University, Potchefstroom 2520, South Africa
| | - John J Reilly
- Department of Psychological Sciences and Health, University of Strathclyde, Glasgow G1 1QE, UK
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Baranowska W, Rzepna M, Ostrowski P, Lewandowska H. Radiation and Radical Grafting Compatibilization of Polymers for Improved Bituminous Binders-A Review. Materials (Basel) 2024; 17:1642. [PMID: 38612155 PMCID: PMC11012479 DOI: 10.3390/ma17071642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 03/28/2024] [Accepted: 04/01/2024] [Indexed: 04/14/2024]
Abstract
This review scrutinizes current research on new methods for enhancing bituminous binder performance through radiation and radical grafting of polymer modifiers of bitumen. It investigates innovative methods, including using waste polymers as modifiers and applying radiation for polymer grafting, to overcome challenges like high costs, low aging resistance, and storage stability issues, of which separation of phases polymer/bitumen is the most significant obstacle. These advanced modification techniques promise sustainability through the decrease of the carbon footprint of transportation systems by improving the properties and durability of binders. Additionally, this review discusses the parameters and mechanistic aspects from a scientific perspective, shedding light on the underlying processes that contribute to the improved performance of modified bituminous binders.
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Affiliation(s)
- Wiktoria Baranowska
- Centre for Radiation Research and Technology, Institute of Nuclear Chemistry and Technology, 16 Dorodna St., 03-195 Warsaw, Poland
- ORLEN Asfalt sp. z o.o., 39 Łukasiewicz St., 09-400 Płock, Poland
| | - Magdalena Rzepna
- Centre for Radiation Research and Technology, Institute of Nuclear Chemistry and Technology, 16 Dorodna St., 03-195 Warsaw, Poland
| | - Przemysław Ostrowski
- ORLEN Asfalt sp. z o.o., 39 Łukasiewicz St., 09-400 Płock, Poland
- Department of Transportation Engineering, Faculty of Civil and Environmental Engineering, Gdansk University of Technology, 80-233 Gdansk, Poland
| | - Hanna Lewandowska
- Centre for Radiation Research and Technology, Institute of Nuclear Chemistry and Technology, 16 Dorodna St., 03-195 Warsaw, Poland
- School of Health & Medical Sciences, University of Economics and Human Sciences in Warsaw, Okopowa 59, 01-043 Warsaw, Poland
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4
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Feudjio Soffack S, Melachio Tanekou TT, Farikou O, Kame Ngasse GI, Tchami Mbagnia MC, Wondji M, Wondji CS, Abd-Alla AMM, Geiger A, Simo G, Njiokou F. The internal transcribed spacer 1 sequence polymorphism brings updates to tsetse species distribution in the northern Cameroon: Importance in planning efficient vector control. Med Vet Entomol 2024. [PMID: 38563591 DOI: 10.1111/mve.12717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 02/02/2024] [Indexed: 04/04/2024]
Abstract
Vector control remains one of the best strategies to prevent the transmission of trypanosome infections in humans and livestock and, thus, a good way to achieve the elimination of human African trypanosomiasis and animal African trypanosomiasis. A key prerequisite for the success of any vector control strategy is the accurate identification and correct mapping of tsetse species. In this work, we updated the tsetse fly species identification and distribution in many geographical areas in Cameroon. Tsetse flies were captured from six localities in Cameroon, and their species were morphologically identified. Thereafter, DNA was extracted from legs of each tsetse fly and the length polymorphism of internal transcribed spacer-1 (ITS1) region of each fly was investigated using PCR. ITS1 DNA fragments of each tsetse species were sequenced. The sequences obtained were analysed and compared to those available in GenBank. This enabled to confirm/infirm results of the morphologic identification and then, to establish the phylogenetic relationships between tsetse species. Morphologic features allowed to clearly distinguish all the tsetse species captured in the South Region of Cameroon, that is, Glossina palpalis palpalis, G. pallicera, G. caliginea and G. nigrofusca. In the northern area, G. morsitans submorsitans could also be distinguished from G. palpalis palpalis, G. tachinoides and G. fuscipes, but these three later could not be distinguished with routine morphological characters. The ITS1 length polymorphism was high among most of the studied species and allowed to identify the following similar species with a single PCR, that is, G. palpalis palpalis with 241 or 242 bp and G. tachinoides with 221 or 222 bp, G. fuscipes with 236 or 237 bp. We also updated the old distribution of tsetse species in the areas assessed, highlighting the presence of G. palpalis palpalis instead of G. fuscipes in Mbakaou, or in sympatry with G. morsitans submorsitans in Dodeo (northern Cameroon). This study confirms the presence of G. palpalis palpalis in the Adamawa Region of Cameroon. It highlights the limits of using morphological criteria to differentiate some tsetse species. Molecular tools based on the polymorphism of ITS1 of tsetse flies can differentiate tsetse species through a simple PCR before downstream analyses or vector control planning.
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Affiliation(s)
- Steve Feudjio Soffack
- Laboratory of Parasitology and Ecology, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
| | - Tito Tresor Melachio Tanekou
- Department of Microbiology and Parasitology, Faculty of Science, University of Bamenda, Bamenda, Cameroon
- Centre for Research in Infectious Diseases (CRID), Yaoundé, Cameroon
- Department of Vector Biology, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Oumarou Farikou
- Faculty of Health Science, University of Bamenda, Bamenda, Cameroon
| | | | | | - Murielle Wondji
- Centre for Research in Infectious Diseases (CRID), Yaoundé, Cameroon
- Department of Vector Biology, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Charles S Wondji
- Centre for Research in Infectious Diseases (CRID), Yaoundé, Cameroon
- Department of Vector Biology, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Adly M M Abd-Alla
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Vienna, Austria
| | - Anne Geiger
- UMR177, Institut de Recherche pour le Développement (IRD)-CIRAD, Montpellier, France
| | - Gustave Simo
- Molecular Parasitology and Entomology Unit, Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
| | - Flobert Njiokou
- Laboratory of Parasitology and Ecology, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
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Balatsos G, Karras V, Puggioli A, Balestrino F, Bellini R, Papachristos DP, Milonas PG, Papadopoulos NT, Malfacini M, Carrieri M, Kapranas A, Mamai W, Mastronikolos G, Lytra I, Bouyer J, Michaelakis A. Sterile Insect Technique (SIT) field trial targeting the suppression of Aedes albopictus in Greece. Parasite 2024; 31:17. [PMID: 38530210 DOI: 10.1051/parasite/2024020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 03/06/2024] [Indexed: 03/27/2024] Open
Abstract
The sterile insect technique (SIT) involves releasing large numbers of sterile males to outcompete wild males in mating with females, leading to a decline in pest populations. In the current study, we conducted a suppression trial in Greece against the invasive dengue vector mosquito Aedes albopictus (Skuse) through the weekly release of sterile males for 22 weeks from June to September 2019. Our approach included the long-distance transport of sterile mosquitoes, and their release at a density of 2,547 ± 159 sterile males per hectare per week as part of an area-wide integrated pest management strategy (AW-IPM). The repeated releases of sterile males resulted in a gradual reduction in egg density, reaching 78% from mid-June to early September. This reduction remained between 70% and 78% for four weeks after the end of the releases. Additionally, in the SIT intervention area, the ovitrap index, representing the percentage of traps containing eggs, remained lower throughout the trial than in the control area. This trial represents a significant advance in the field of mosquito control, as it explores the viability and efficacy of producing and transporting sterile males from a distant facility to the release area. Our results provide valuable insights for future SIT programmes targeting Ae. Albopictus, and the methodology we employed can serve as a starting point for developing more refined and effective release protocols, including the transportation of sterile males over long distances from production units to intervention areas.
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Affiliation(s)
- Georgios Balatsos
- Scientific Directorate of Entomology and Agricultural Zoology, Benaki Phytopathological Institute, 14561 Kifissia, Greece
| | - Vasileios Karras
- Scientific Directorate of Entomology and Agricultural Zoology, Benaki Phytopathological Institute, 14561 Kifissia, Greece
| | - Arianna Puggioli
- Centro Agricoltura Ambiente "G. Nicoli", 40014 Crevalcore, Italy
| | - Fabrizio Balestrino
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, Seibersdorf, A-2444 Vienna, Austria
| | - Romeo Bellini
- Centro Agricoltura Ambiente "G. Nicoli", 40014 Crevalcore, Italy
| | - Dimitrios P Papachristos
- Scientific Directorate of Entomology and Agricultural Zoology, Benaki Phytopathological Institute, 14561 Kifissia, Greece
| | - Panagiotis G Milonas
- Scientific Directorate of Entomology and Agricultural Zoology, Benaki Phytopathological Institute, 14561 Kifissia, Greece
| | - Nikos T Papadopoulos
- Department of Agriculture, Crop Production and Rural Environment, University of Thessaly, 38446 Magnisias, Greece
| | - Marco Malfacini
- Centro Agricoltura Ambiente "G. Nicoli", 40014 Crevalcore, Italy
| | - Marco Carrieri
- Centro Agricoltura Ambiente "G. Nicoli", 40014 Crevalcore, Italy
| | - Apostolos Kapranas
- Laboratory of Applied Zoology and Parasitology (Entomology), School of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Wadaka Mamai
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, Seibersdorf, A-2444 Vienna, Austria
| | - George Mastronikolos
- Department of Agriculture, Crop Production and Rural Environment, University of Thessaly, 38446 Magnisias, Greece
| | - Ioanna Lytra
- Scientific Directorate of Entomology and Agricultural Zoology, Benaki Phytopathological Institute, 14561 Kifissia, Greece
| | - Jérémy Bouyer
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture, Seibersdorf, A-2444 Vienna, Austria - ASTRE, CIRAD, 34398 Montpellier, France - ASTRE, Cirad, INRAE, Univ. Montpellier, Plateforme Technologique CYROI, Sainte-Clotilde, La Réunion, France
| | - Antonios Michaelakis
- Scientific Directorate of Entomology and Agricultural Zoology, Benaki Phytopathological Institute, 14561 Kifissia, Greece
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Seck MT, Fall AG, Ciss M, Bakhoum MT, Sall B, Gaye AM, Gimonneau G, Bassène MD, Lancelot R, Vreysen MJ, Bouyer J. Animal trypanosomosis eliminated in a major livestock production region in Senegal following the eradication of a tsetse population. Parasite 2024; 31:11. [PMID: 38450717 PMCID: PMC10918644 DOI: 10.1051/parasite/2024010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 02/08/2024] [Indexed: 03/08/2024] Open
Abstract
African animal trypanosomosis (AAT) was one of the main disease-related constraints to the development of intensive livestock production systems in the Niayes region of Senegal, a 30 km wide strip of land along the coast between Dakar and Saint-Louis. To overcome this constraint, the Government of Senegal initiated an area-wide integrated pest management programme combining chemical control tactics with the sterile insect technique to eradicate a population of the tsetse fly Glossina palpalis gambiensis Vanderplank, 1949 (Diptera, Glossinidae) in this area. The project was implemented following a phased conditional approach, and the target area was divided into three blocks treated sequentially. This study aims to assess the temporal dynamics of the prevalence of Trypanosoma spp. during the implementation of this programme. Between 2009 and 2022, 4,359 blood samples were collected from cattle and screened for trypanosomes using both the buffy coat and ELISA techniques, and PCR tests since 2020. The seroprevalence decreased from 18.9% (95%CI: 11.2-26.5) in 2009 to 0% in 2017-2022 in block 1, and from 92.9% (95%CI: 88.2-97) in 2010 to 0% in 2021 in block 2. The parasitological and serological data confirm the entomological monitoring results, i.e., that there is a high probability that the population of G. p. gambiensis has been eradicated from the Niayes and that the transmission of AAT has been interrupted in the treated area. These results indicate the effectiveness of the adopted approach and show that AAT can be sustainably removed through the creation of a zone free of G. p. gambiensis.
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Affiliation(s)
- Momar Talla Seck
- Institut Sénégalais de Recherches Agricoles, Laboratoire National de l’Elevage et de Recherches Vétérinaires route du Front de Terre 11500 Dakar – Hann Sénégal
| | - Assane Guèye Fall
- Institut Sénégalais de Recherches Agricoles, Laboratoire National de l’Elevage et de Recherches Vétérinaires route du Front de Terre 11500 Dakar – Hann Sénégal
| | - Mamadou Ciss
- Institut Sénégalais de Recherches Agricoles, Laboratoire National de l’Elevage et de Recherches Vétérinaires route du Front de Terre 11500 Dakar – Hann Sénégal
| | - Mame Thierno Bakhoum
- Institut Sénégalais de Recherches Agricoles, Laboratoire National de l’Elevage et de Recherches Vétérinaires route du Front de Terre 11500 Dakar – Hann Sénégal
| | - Baba Sall
- Ministère de l’Elevage et des Productions Animales, Direction des Services Vétérinaires Sphère Ministérielle Ousmane Tanor Dieng 20000 Dakar – Diamniadio Sénégal
| | - Adji Marème Gaye
- Ministère de l’Elevage et des Productions Animales, Direction des Services Vétérinaires Sphère Ministérielle Ousmane Tanor Dieng 20000 Dakar – Diamniadio Sénégal
| | - Geoffrey Gimonneau
- Institut Sénégalais de Recherches Agricoles, Laboratoire National de l’Elevage et de Recherches Vétérinaires route du Front de Terre 11500 Dakar – Hann Sénégal
- CIRAD, UMR INTERTRYP 37, avenue Jean XXIII BP 6189 12900 Dakar-Etoile Sénégal
- INTERTRYP, Univ Montpellier, CIRAD, IRD Campus International de Baillarguet 34398 Montpellier France
| | - Mireille Djimangali Bassène
- Institut Sénégalais de Recherches Agricoles, Laboratoire National de l’Elevage et de Recherches Vétérinaires route du Front de Terre 11500 Dakar – Hann Sénégal
| | - Renaud Lancelot
- ASTRE, CIRAD 34398 Montpellier France
- ASTRE, Cirad, INRAE, Univ. Montpellier, Plateforme Technologique CYROI 97491 Sainte-Clotilde, La Réunion France
| | - Marc J.B. Vreysen
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture Wagramerstrasse 5 1400 Vienna Austria
| | - Jérémy Bouyer
- CIRAD, UMR INTERTRYP 37, avenue Jean XXIII BP 6189 12900 Dakar-Etoile Sénégal
- INTERTRYP, Univ Montpellier, CIRAD, IRD Campus International de Baillarguet 34398 Montpellier France
- ASTRE, CIRAD 34398 Montpellier France
- ASTRE, Cirad, INRAE, Univ. Montpellier, Plateforme Technologique CYROI 97491 Sainte-Clotilde, La Réunion France
- Insect Pest Control Laboratory, Joint FAO/IAEA Programme of Nuclear Techniques in Food and Agriculture Wagramerstrasse 5 1400 Vienna Austria
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Ravel S, Ségard A, Mollo BG, Mahamat MH, Argiles-Herrero R, Bouyer J, Rayaisse JB, Solano P, Pèka M, Darnas J, Belem AMG, Yoni W, Noûs C, de Meeûs T. Limited impact of vector control on the population genetic structure of Glossina fuscipes fuscipes from the sleeping sickness focus of Maro, Chad. Parasite 2024; 31:13. [PMID: 38450719 PMCID: PMC10918643 DOI: 10.1051/parasite/2024013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 02/13/2024] [Indexed: 03/08/2024] Open
Abstract
Tsetse flies (genus Glossina) transmit deadly trypanosomes to human populations and domestic animals in sub-Saharan Africa. Some foci of Human African Trypanosomiasis due to Trypanosoma brucei gambiense (g-HAT) persist in southern Chad, where a program of tsetse control was implemented against the local vector Glossina fuscipes fuscipes in 2018 in Maro. We analyzed the population genetics of G. f. fuscipes from the Maro focus before control (T0), one year (T1), and 18 months (T2) after the beginning of control efforts. Most flies captured displayed a local genetic profile (local survivors), but a few flies displayed outlier genotypes. Moreover, disturbance of isolation by distance signature (increase of genetic distance with geographic distance) and effective population size estimates, absence of any genetic signature of a bottleneck, and an increase of genetic diversity between T0 and T2 strongly suggest gene flows from various origins, and a limited impact of the vector control efforts on this tsetse population. Continuous control and surveillance of g-HAT transmission is thus recommended in Maro. Particular attention will need to be paid to the border with the Central African Republic, a country where the entomological and epidemiological status of g-HAT is unknown.
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Affiliation(s)
- Sophie Ravel
- Intertryp, Université de Montpellier, Cirad, IRD Montpellier France
| | - Adeline Ségard
- Intertryp, Université de Montpellier, Cirad, IRD Montpellier France
| | | | | | - Rafael Argiles-Herrero
- Insect Pest Control Laboratory, Joint Food and Agriculture Organization of the United Nations/International Atomic Energy Agency Program of Nuclear Techniques in Food and Agriculture A-1400 Vienna Austria
| | - Jérémy Bouyer
- Insect Pest Control Laboratory, Joint Food and Agriculture Organization of the United Nations/International Atomic Energy Agency Program of Nuclear Techniques in Food and Agriculture A-1400 Vienna Austria
- UMR Astre, Cirad, Plateforme Cyroi 2 rue Maxime Rivière 97491 Sainte-Clotilde La Réunion France
| | - Jean-Baptiste Rayaisse
- Centre International de Recherche Développement sur l’Élevage en zone Subhumide (Cirdes) Bobo-Dioulasso Burkina Faso
| | - Philippe Solano
- Intertryp, Université de Montpellier, Cirad, IRD Montpellier France
| | - Mallaye Pèka
- Programme National de Lutte contre la THA (PNLTHA) Ndjaména Chad
| | - Justin Darnas
- Programme National de Lutte contre la THA (PNLTHA) Ndjaména Chad
| | | | - Wilfrid Yoni
- Centre International de Recherche Développement sur l’Élevage en zone Subhumide (Cirdes) Bobo-Dioulasso Burkina Faso
| | - Camille Noûs
- Cogitamus Laboratory France, https://www.cogitamus.fr/
| | - Thierry de Meeûs
- Intertryp, Université de Montpellier, Cirad, IRD Montpellier France
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Pham ND, Tran TM, Anderson D, Che QT, Pham HTK. Baseline micronucleus frequencies and 60Co cytokinesis-block micronucleus assay dose-response curve for biodosimetry in Vietnam. Radiat Prot Dosimetry 2024; 200:221-228. [PMID: 37807769 DOI: 10.1093/rpd/ncad266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 08/23/2023] [Accepted: 09/16/2023] [Indexed: 10/10/2023]
Abstract
This study aims to establish baseline micronucleus (MN) frequencies from various populations of residents in Vietnam and develop a 60Co dose-response curve for the cytokinesis-block micronucleus (CBMN) assay. Blood samples were exposed in vitro to a 60Co source at a dose rate of 275 mGy per min in a range of 0.1 to 4.0 Gy. MN background frequencies were 4.5 ± 3.2, 7.3 ± 4.6, 7.0 ± 3.8 and 13.1 ± 6.7 in 1000 binucleated (BN) cells for 96 healthy donors, 22 male radiation workers and 12 breast cancer patients, respectively. Blood samples from three healthy donors were used to generate the MN dose-response curve: y = C + (0.0496 ± 0.0069)D + (0.0143 ± 0.0026)D2. This curve was verified through an inter-laboratory comparison (RENEB ILC 2021). Our findings highlight the significance of the CBMN assay as an additional essential tool for biodosimetry in Vietnam.
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Affiliation(s)
- Ngoc Duy Pham
- Radiation Technology and Biotechnology Center, Dalat Nuclear Research Institute, No. 01, Nguyen Tu Luc Street, Dalat City, Lamdong Province 66000, Vietnam
| | - Thanh Mai Tran
- Radiation Technology and Biotechnology Center, Dalat Nuclear Research Institute, No. 01, Nguyen Tu Luc Street, Dalat City, Lamdong Province 66000, Vietnam
| | - Donovan Anderson
- Institute of Radiation Emergency Medicine, Hirosaki University, 66-1, Hon-cho, Hirosaki-shi, Aomori 036-8564, Japan
| | - Quang Tuan Che
- Radiation Technology and Biotechnology Center, Dalat Nuclear Research Institute, No. 01, Nguyen Tu Luc Street, Dalat City, Lamdong Province 66000, Vietnam
| | - Ho Thuat Khoa Pham
- Radiation Technology and Biotechnology Center, Dalat Nuclear Research Institute, No. 01, Nguyen Tu Luc Street, Dalat City, Lamdong Province 66000, Vietnam
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Pereira L, Echarte L, Romero M, Grazioli G, Pérez-Campos H, Francia A, Vicentino W, Mombrú AW, Faccio R, Álvarez I, Touriño C, Pardo H. Synthesis and characterization of a bovine collagen: GAG scaffold with Uruguayan raw material for tissue engineering. Cell Tissue Bank 2024; 25:123-142. [PMID: 34536180 DOI: 10.1007/s10561-021-09960-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 09/06/2021] [Indexed: 11/28/2022]
Abstract
Tissue engineering (TE) and regenerative medicine offer strategies to improve damaged tissues by using scaffolds and cells. The use of collagen-based biomaterials in the field of TE has been intensively growing over the past decades. Mesenchymal stromal cells (MSCs) and dental pulp stem cells (DPSCs) are promising cell candidates for development of clinical composites. In this study, we proposed the development of a bovine collagen type I: chondroitin-6-sulphate (CG) scaffold, obtained from Uruguayan raw material (certified as free bovine spongiform encephalopathy), with CG crosslinking enhancement using different gamma radiation doses. Structural, biomechanical and chemical characteristics of the scaffolds were assessed by Scanning Electron Microscopy, axial tensile tests, FT-IR and Raman Spectroscopy, respectively. Once we selected the most appropriate scaffold for future use as a TE product, we studied the behavior of MSCs and DPSCs cultured on the scaffold by cytotoxicity, proliferation and differentiation assays. Among the diverse porous scaffolds obtained, the one with the most adequate properties was the one exposed to 15 kGy of gamma radiation. This radiation dose contributed to the crosslinking of molecules, to the formation of new bonds and/or to the reorganization of the collagen fibers. The selected scaffold was non-cytotoxic for the tested cells and a suitable substrate for cell proliferation. Furthermore, the scaffold allowed MSCs differentiation to osteogenic, chondrogenic, and adipogenic lineages. Thus, this work shows a promising approach to the synthesis of a collagen-scaffold suitable for TE.
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Affiliation(s)
- L Pereira
- Centro NanoMat, Facultad de Química, Instituto Polo Tecnológico de Pando, UdelaR, Camino Aparicio Saravia s/n, 9100, Pando, Canelones, Uruguay
| | - L Echarte
- Área Terapia Celular y Medicina Regenerativa (ATCMR), Departamento Básico de Medicina, Hospital de Clínicas, Facultad de Medicina, Universidad de la República (UdelaR), Montevideo, Uruguay
| | - M Romero
- Cátedra de Física, Facultad de Química, DETEMA, Universidad de la República (UdelaR), General Flores, 2124, 11800, Montevideo, Uruguay
| | - G Grazioli
- Cátedra de Materiales Dentales, Facultad de Odontología, Universidad de la República (UdelaR), Montevideo, Uruguay
| | - H Pérez-Campos
- Instituto Nacional de Donación y Trasplante (INDT), Ministerio de salud Pública-Hospital de Clínicas, Facultad de Medicina, Universidad de la República (UdelaR), Montevideo, Ministerio, Uruguay
| | - A Francia
- Fisiología general y bucodental, Facultad de Odontología, Universidad de la República (UdelaR), Montevideo, Uruguay
| | - W Vicentino
- Instituto Nacional de Donación y Trasplante (INDT), Ministerio de salud Pública-Hospital de Clínicas, Facultad de Medicina, Universidad de la República (UdelaR), Montevideo, Ministerio, Uruguay
| | - A W Mombrú
- Cátedra de Física, Facultad de Química, DETEMA, Universidad de la República (UdelaR), General Flores, 2124, 11800, Montevideo, Uruguay
| | - R Faccio
- Cátedra de Física, Facultad de Química, DETEMA, Universidad de la República (UdelaR), General Flores, 2124, 11800, Montevideo, Uruguay
| | - I Álvarez
- Instituto Nacional de Donación y Trasplante (INDT), Ministerio de salud Pública-Hospital de Clínicas, Facultad de Medicina, Universidad de la República (UdelaR), Montevideo, Ministerio, Uruguay
| | - C Touriño
- Área Terapia Celular y Medicina Regenerativa (ATCMR), Departamento Básico de Medicina, Hospital de Clínicas, Facultad de Medicina, Universidad de la República (UdelaR), Montevideo, Uruguay.
| | - H Pardo
- Cátedra de Física, Facultad de Química, DETEMA, Universidad de la República (UdelaR), General Flores, 2124, 11800, Montevideo, Uruguay.
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10
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Cabello-Arista B, Melgarejo-Ramírez Y, Retana-Flores A, Martínez-López V, Márquez-Gutiérrez E, Almanza-Pérez J, Lecona H, Reyes-Frías ML, Ibarra C, Martínez-Pardo ME, Velasquillo C, Sánchez-Sánchez R. Effects of mesenchymal stem cell culture on radio sterilized human amnion or radio sterilized pig skin in burn wound healing. Cell Tissue Bank 2024; 25:255-267. [PMID: 35059955 DOI: 10.1007/s10561-021-09976-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 11/02/2021] [Indexed: 11/29/2022]
Abstract
Deep second and third degree burns treatment requires fibroblasts, keratinocytes and other skin cells in order to grow new dermis and epidermis. Cells can proliferate, secrete growth factors and extracellular matrix required to repair the damaged tissue. Radiosterilized human amnion and radiosterilized pig skin have been used as natural origin skin dressings for burned patients. Adipose-derived mesenchymal stem cells can differentiate into fibroblasts and keratinocytes and improve wound-healing progress. These cells can stimulate vascular tissue formation, release growth factors, synthetize new extracellular matrix and immunoregulate other cells. In this study, we developed mesenchymal stem cells-cellularized skin substitutes based from radiosterilized human amnion or pig skin. Third-degree burns were induced in mice animal models to evaluate the effect of cellularized skin substitutes on burn wound healing. Mesenchymal phenotype was immunophenotypically confirmed by flow cytometry and cell viability was close to 100%. Skin recovery was evaluated in burned mice after seven and fourteen days post-coverage with cellularized and non-cellularized sustitutes. Histological techniques and immunofluorescence were used to evaluate re-epithelization and type I collagen deposition. We determined that cellularized-human amnion or cellularized-pig skin in combination with mesenchymal stem cells improve extracellular matrix deposition. Both cellularized constructs increase detection of type I collagen in newly formed mouse skin and can be potentially used as skin coverage for further clinical treatment of burned patients.
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Affiliation(s)
- B Cabello-Arista
- Laboratorio de Biotecnología, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Calzada México-Xochimilco No. 289, Col. Arenal de Guadalupe, C.P. 14389, Mexico City, Mexico
| | - Y Melgarejo-Ramírez
- Laboratorio de Biotecnología, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Calzada México-Xochimilco No. 289, Col. Arenal de Guadalupe, C.P. 14389, Mexico City, Mexico
| | - A Retana-Flores
- Unidad de Ingeniería de Tejidos, Terapia Celular y Medicina Regenerativa, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Calzada México-Xochimilco No. 289, Col. Arenal de Guadalupe, C.P. 14389, Mexico City, Mexico
| | - V Martínez-López
- Unidad de Ingeniería de Tejidos, Terapia Celular y Medicina Regenerativa, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Calzada México-Xochimilco No. 289, Col. Arenal de Guadalupe, C.P. 14389, Mexico City, Mexico
| | - E Márquez-Gutiérrez
- Laboratorio de Biotecnología, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Calzada México-Xochimilco No. 289, Col. Arenal de Guadalupe, C.P. 14389, Mexico City, Mexico
| | - J Almanza-Pérez
- Laboratorio de Farmacología, Depto. Ciencias de la Salud, D.C.B.S.,, Universidad Autónoma Metropolitana-Iztapalapa, C.P. 09340, Mexico City, Mexico
| | - H Lecona
- Bioterio y Cirugía Experimental, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Calzada México-Xochimilco No. 289, Col. Arenal de Guadalupe, C.P. 14389, Mexico City, Mexico
| | - M L Reyes-Frías
- Banco de Tejidos Radioesterilizados, Instituto Nacional de Investigaciones Nucleares (BTR-ININ), Carretera México-Toluca S/N La Marquesa, C.P. 52750, Ocoyoacac, Edo. Mex, Mexico
| | - C Ibarra
- Unidad de Ingeniería de Tejidos, Terapia Celular y Medicina Regenerativa, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Calzada México-Xochimilco No. 289, Col. Arenal de Guadalupe, C.P. 14389, Mexico City, Mexico
| | - M E Martínez-Pardo
- Banco de Tejidos Radioesterilizados, Instituto Nacional de Investigaciones Nucleares (BTR-ININ), Carretera México-Toluca S/N La Marquesa, C.P. 52750, Ocoyoacac, Edo. Mex, Mexico
| | - C Velasquillo
- Laboratorio de Biotecnología, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Calzada México-Xochimilco No. 289, Col. Arenal de Guadalupe, C.P. 14389, Mexico City, Mexico
| | - R Sánchez-Sánchez
- Unidad de Ingeniería de Tejidos, Terapia Celular y Medicina Regenerativa, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Calzada México-Xochimilco No. 289, Col. Arenal de Guadalupe, C.P. 14389, Mexico City, Mexico.
- Escuela de Ingeniería y Ciencias, Departamento de Bioingeniería, Instituto Tecnológico de Monterrey, Puente 222, Col. Arboledas del Sur, C.P. 14380, Mexico City, Mexico.
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11
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Chi DD, Toan TN, Hill R. A multi-detector comparison to determine convergence of measured relative output factors for small field dosimetry. Phys Eng Sci Med 2024; 47:371-379. [PMID: 37943444 DOI: 10.1007/s13246-023-01351-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 10/24/2023] [Indexed: 11/10/2023]
Abstract
The TRS-483 Code of Practice (CoP) provides generic relative output correction factors, [Formula: see text], for a range of detectors and beam energies as used in small field dosimetry. In this work, the convergence of the relative output factors (ROFs) for 6 MV X-ray beams with and without flattening filters was investigated under different combinations of beam collimation and published detector correction factors. The SFD, PFD and CC04 (IBA) were used to measure ROFs of a TrueBeam STx linear accelerator with small fields collimated by the high-definition MLC, which has 2.5 and 5.0 mm projected leaves. Two configurations were used for the collimators: (1) fixed jaws at 10 × 10 cm2 and (2) with a 2 mm offset from the MLC edge, in line with the recommended geometry from IROC-H as part of their auditing program and published dataset. The [Formula: see text] factors for the three detectors were taken from the TRS483 CoP and other published works. The average differences of ROFs measured by detectors under MLC fields with fixed jaws and with 2 mm jaws offset for the 6 MV-WFF beam are 1.4% and 1.9%, respectively. Similarly, they are 2.3% and 2.4% for the 6MV-FFF beam. The relative differences between the detector-average ROFs and the corresponding IROC-H dataset are 2.0% and 3.1% for the 6 MV-WFF beam, while they are 2.4% and 3.2% for the 6MV-FFF beam at the smallest available field size of 2 × 2 cm2. For smaller field sizes, the average ROFs of the three detectors and corresponding results from Akino and Dufreneix showed the largest difference to be 6.6% and 6.2% under the 6 MV-WFF beam, while they are 3.4% and 3.6% under the 6 MV-WFF beam at the smallest field size of 0.5 × 0.5 cm2. Some well-published specific output correction factors for different small field detector types give better convergence in the calculation of the relative output factor in comparison with the generic data provided by the TRS-483 CoP. Relative output factor measurements should be performed as close as possible to the clinical settings including a combination of collimation systems, beam types and using at least three different types of small field detector for more accurate computation of the treatment planning system. The IROC-H dataset is not available for field size smaller than 2 × 2 cm2 for double checks and so that user should carefully check with other publications with the same setting.
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Affiliation(s)
- Do Duc Chi
- 108 Military Central Hospital, Hanoi, Vietnam.
- Vietnam Atomic Energy Institute, Hanoi, Vietnam.
| | | | - Robin Hill
- Department of Radiation Oncology, Chris O'Brien Lifehouse, Missenden Rd, Camperdown, Sydney, NSW, 2050, Australia
- Arto Hardy Family Biomedical Innovation Hub, Chris O'Brien Lifehouse, Missenden Rd, Camperdown, Sydney, NSW, 2050, Australia
- Institute of Medical Physics, School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia
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12
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Echarte L, Grazioli G, Pereira L, Francia A, Pérez H, Kuzuian W, Vicentino W, Pardo H, Mombrú A, Maglia Á, Touriño C, Álvarez I. Processing methods for human amniotic membrane as scaffold for tissue engineering with mesenchymal stromal human cells. Cell Tissue Bank 2024; 25:269-283. [PMID: 35906514 DOI: 10.1007/s10561-022-10014-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 04/27/2022] [Indexed: 11/30/2022]
Abstract
Tissue engineering is an interdisciplinary field that applies the principles of engineering and life sciences toward the development of biological substitutes that restore, maintain, or improve tissue function. The aims of this work were to compare chemically and physically processed human Amniotic Membranes (hAM) and analyze the cytocompatibility and proliferation rate (PR) of two primary human mesenchymal stromal cell lines, from different sources and donor conditions seeded over these scaffolds. The evaluated hAM processes were: cold shock to obtain a frozen amniotic membrane (FEAM) with remaining dead epithelial cells, denudation of hAM with trypsin for 20/10 min (DEAM20/10) or treatment with sodium dodecyl sulfate to decellularized hAM (DAM). All samples were sterilized with gamma radiation. The selection of the treated hAM to then generate composites was performed by scanning and transmission electron microscopy and characterization by X-ray diffraction, selecting DEAM10 and FEAM as scaffolds for cell seeding. Two sources of primary human stromal cells were used, both developed by our researchers, human Dental Pulp Stem Cells (hDPSC) from living donors and human Mesenchymal Stromal Cells (hMSC) from bone marrow isolated from brain dead donors. This last line of cells conveys a novel source of human cells that, to our knowledge, have not been tested as part of this type of construct. We developed four in vitro constructs without cytotoxicity signs and with different PR depending on the scaffolds and cells. hDPSC and hMSC grew over both FEAM and DEAM10, but DEAM10 allowed higher PR.
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Affiliation(s)
- L Echarte
- Área Terapia Celular y Medicina Regenerativa (ATCMR), Departamento Básico de Medicina, Hospital de Clínicas, Facultad de Medicina, UdelaR, Montevideo, Uruguay
| | - G Grazioli
- Cátedra de Materiales Dentales, Facultad de Odontología UdelaR, Montevideo, Uruguay
| | - L Pereira
- Departamento de Biomateriales, Facultad de Química, Parque Científico Tecnológico de Pando, UdelaR, Canelones, Uruguay
| | - A Francia
- Facultad de Odontología UdelaR, Fisiología General y Bucodental, Montevideo, Uruguay
| | - H Pérez
- Facultad de Medicina, Instituto Nacional de Donación y Trasplante (INDT), Ministerio de Salud Pública- Hospital de Clínicas, Universidad de La República (UdelaR), Montevideo, Uruguay
| | - W Kuzuian
- Facultad de Medicina, Instituto Nacional de Donación y Trasplante (INDT), Ministerio de Salud Pública- Hospital de Clínicas, Universidad de La República (UdelaR), Montevideo, Uruguay
| | - W Vicentino
- Facultad de Medicina, Instituto Nacional de Donación y Trasplante (INDT), Ministerio de Salud Pública- Hospital de Clínicas, Universidad de La República (UdelaR), Montevideo, Uruguay
| | - H Pardo
- Departamento de Biomateriales, Facultad de Química, Parque Científico Tecnológico de Pando, UdelaR, Canelones, Uruguay
| | - A Mombrú
- Departamento de Biomateriales, Facultad de Química, Parque Científico Tecnológico de Pando, UdelaR, Canelones, Uruguay
| | - Á Maglia
- Facultad de Odontología UdelaR, Cátedra de Histología y Embriología Bucodental, Montevideo, Uruguay
| | - C Touriño
- Área Terapia Celular y Medicina Regenerativa (ATCMR), Departamento Básico de Medicina, Hospital de Clínicas, Facultad de Medicina, UdelaR, Montevideo, Uruguay
| | - I Álvarez
- Facultad de Medicina, Instituto Nacional de Donación y Trasplante (INDT), Ministerio de Salud Pública- Hospital de Clínicas, Universidad de La República (UdelaR), Montevideo, Uruguay.
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13
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Ristanic M, Zorc M, Glavinic U, Stevanovic J, Blagojevic J, Maletic M, Stanimirovic Z. Genome-Wide Analysis of Milk Production Traits and Selection Signatures in Serbian Holstein-Friesian Cattle. Animals (Basel) 2024; 14:669. [PMID: 38473054 DOI: 10.3390/ani14050669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 02/05/2024] [Accepted: 02/14/2024] [Indexed: 03/14/2024] Open
Abstract
To improve the genomic evaluation of milk-related traits in Holstein-Friesian (HF) cattle it is essential to identify the associated candidate genes. Novel SNP-based analyses, such as the genetic mapping of inherited diseases, GWAS, and genomic selection, have led to a new era of research. The aim of this study was to analyze the association of each individual SNP in Serbian HF cattle with milk production traits and inbreeding levels. The SNP 60 K chip Axiom Bovine BovMDv3 was deployed for the genotyping of 334 HF cows. The obtained genomic results, together with the collected phenotypic data, were used for a GWAS. Moreover, the identification of ROH segments was performed and served for inbreeding coefficient evaluation and ROH island detection. Using a GWAS, a polymorphism, rs110619097 (located in the intron of the CTNNA3 gene), was detected to be significantly (p < 0.01) associated with the milk protein concentration in the first lactation (adjusted to 305 days). The average genomic inbreeding value (FROH) was 0.079. ROH islands were discovered in proximity to genes associated with milk production traits and genomic regions under selection pressure for other economically important traits of dairy cattle. The findings of this pilot study provide useful information for a better understanding of the genetic architecture of milk production traits in Serbian HF dairy cows and can be used to improve lactation performances in Serbian HF cattle breeding programs.
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Affiliation(s)
- Marko Ristanic
- Department of Biology, Faculty of Veterinary Medicine, University of Belgrade, Bul. Oslobodjenja 18, 11000 Belgrade, Serbia
| | - Minja Zorc
- Department of Animal Science, Biotechnical Faculty, University of Ljubljana, Groblje 3, 1000 Ljubljana, Slovenia
| | - Uros Glavinic
- Department of Biology, Faculty of Veterinary Medicine, University of Belgrade, Bul. Oslobodjenja 18, 11000 Belgrade, Serbia
| | - Jevrosima Stevanovic
- Department of Biology, Faculty of Veterinary Medicine, University of Belgrade, Bul. Oslobodjenja 18, 11000 Belgrade, Serbia
| | - Jovan Blagojevic
- Department of Biology, Faculty of Veterinary Medicine, University of Belgrade, Bul. Oslobodjenja 18, 11000 Belgrade, Serbia
| | - Milan Maletic
- Department of Reproduction, Fertility and Artificial Insemination, Faculty of Veterinary Medicine, University of Belgrade, Bul. Oslobodjenja 18, 11000 Belgrade, Serbia
| | - Zoran Stanimirovic
- Department of Biology, Faculty of Veterinary Medicine, University of Belgrade, Bul. Oslobodjenja 18, 11000 Belgrade, Serbia
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14
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Arcos Rosero WA, Bueno Barbezan A, Daruich de Souza C, Chuery Martins Rostelato ME. Review of Advances in Coating and Functionalization of Gold Nanoparticles: From Theory to Biomedical Application. Pharmaceutics 2024; 16:255. [PMID: 38399309 PMCID: PMC10892584 DOI: 10.3390/pharmaceutics16020255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 11/27/2023] [Accepted: 01/02/2024] [Indexed: 02/25/2024] Open
Abstract
Nanoparticles, especially gold nanoparticles (Au NPs) have gained increasing interest in biomedical applications. Used for disease prevention, diagnosis and therapies, its significant advantages in therapeutic efficacy and safety have been the main target of interest. Its application in immune system prevention, stability in physiological environments and cell membranes, low toxicity and optimal bioperformances are critical to the success of engineered nanomaterials. Its unique optical properties are great attractors. Recently, several physical and chemical methods for coating these NPs have been widely used. Biomolecules such as DNA, RNA, peptides, antibodies, proteins, carbohydrates and biopolymers, among others, have been widely used in coatings of Au NPs for various biomedical applications, thus increasing their biocompatibility while maintaining their biological functions. This review mainly presents a general and representative view of the different types of coatings and Au NP functionalization using various biomolecules, strategies and functionalization mechanisms.
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Krüger AP, Garcez AM, Scheunemann T, Bernardi D, Nava DE, Garcia FRM. Reproductive Biology of Trichopria anastrephae (Hymenoptera: Diapriidae), a Biological Control Agent of Drosophila suzukii (Matsumura) (Diptera: Drosophilidae). Neotrop Entomol 2024; 53:38-46. [PMID: 38032474 DOI: 10.1007/s13744-023-01103-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 11/14/2023] [Indexed: 12/01/2023]
Abstract
Hymenopteran parasitoids, like any other insect, employ strategies to ensure their reproduction. Understanding these strategies is important for ecological purposes, but also to improve mass rearing of biological control agents. Here, we describe mating strategies used by the pupal parasitoid Trichopria anastrephae Lima (Hymenoptera: Diapriidae), a potential biocontrol agent, that has been considered for augmentative releases for management of the invasive pest species Drosophila suzukii (Matsumura) (Diptera: Drosophilidae). We studied the emergence pattern of males and females of T. anastrephae and the effects of parental ae on offspring number and sex ratio. Polygamy was also studied and its effects on parasitism and offspring production were described. Adults from this species emerge in the first hours of photophase, and males emerge before females, demonstrating that T. anastrephae is a protandrous species. Parasitoid age when first mated influences the parasitism and sex ratio. Younger females result in a higher number of offspring (8.16 parasitoids/day), while older males result in a more female-biased sex ratio of offspring (64% females). Both males and females are polygamic, and the order in which a female is mated by the male affects parasitism, viability of parasitized pupae, and sex ratio of offspring, with the first female performing the highest parasitism and sex ratio (63.83 and 61% of females, respectively), but the lowest viability (92.92%). Females that are allowed to mate multiple times generate lower numbers of offspring (113.05 parasitoids) when compared to virgin or single-mated females (135.20 and 130.70 parasitoids, respectively), but the highest sex ratio (49% of females). Data present in this study and how it can be used to improve parasitoid rearing and field releases of T. anastrephae, in biological control programs for D. suzukii are discussed.
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Affiliation(s)
- Alexandra P Krüger
- Crop Protection Department, Federal University of Pelotas (UFPel), Capão do Leão, RS, Brazil.
| | - Amanda M Garcez
- Crop Protection Department, Federal University of Pelotas (UFPel), Capão do Leão, RS, Brazil
| | - Tiago Scheunemann
- Crop Protection Department, Federal University of Pelotas (UFPel), Capão do Leão, RS, Brazil
| | - Daniel Bernardi
- Crop Protection Department, Federal University of Pelotas (UFPel), Capão do Leão, RS, Brazil
| | - Dori E Nava
- Embrapa Temperate Agriculture, Pelotas, RS, Brazil
| | - Flávio R M Garcia
- Crop Protection Department, Federal University of Pelotas (UFPel), Capão do Leão, RS, Brazil
- Ecology, Zoology and Genetics Department, UFPel, Capão do Leão, RS, Brazil
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16
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Palkumbura PGAS, Mahakapuge TAN, Wijesundera RRMKK, Wijewardana V, Kangethe RT, Rajapakse RPVJ. Mucosal Immunity of Major Gastrointestinal Nematode Infections in Small Ruminants Can Be Harnessed to Develop New Prevention Strategies. Int J Mol Sci 2024; 25:1409. [PMID: 38338687 PMCID: PMC10855138 DOI: 10.3390/ijms25031409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 01/19/2024] [Accepted: 01/21/2024] [Indexed: 02/12/2024] Open
Abstract
Gastrointestinal parasitic nematode (GIN) infections are the cause of severe losses to farmers in countries where small ruminants such as sheep and goat are the mainstay of livestock holdings. There is a need to develop effective and easy-to-administer anti-parasite vaccines in areas where anthelmintic resistance is rapidly rising due to the inefficient use of drugs currently available. In this review, we describe the most prevalent and economically significant group of GIN infections that infect small ruminants and the immune responses that occur in the host during infection with an emphasis on mucosal immunity. Furthermore, we outline the different prevention strategies that exist with a focus on whole and purified native parasite antigens as vaccine candidates and their possible oral-nasal administration as a part of an integrated parasite control toolbox in areas where drug resistance is on the rise.
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Affiliation(s)
- P. G. Ashani S. Palkumbura
- Department of Veterinary Pathobiology, Faculty of Veterinary Medicine and Animal Science, University of Peradeniya, Kandy 20400, Sri Lanka
| | - Thilini A. N. Mahakapuge
- Department of Veterinary Pathobiology, Faculty of Veterinary Medicine and Animal Science, University of Peradeniya, Kandy 20400, Sri Lanka
| | - R. R. M. K. Kavindra Wijesundera
- Department of Veterinary Pathobiology, Faculty of Veterinary Medicine and Animal Science, University of Peradeniya, Kandy 20400, Sri Lanka
| | - Viskam Wijewardana
- Animal Production and Health Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, 2444 Seibersdorf, Austria
| | - Richard Thiga Kangethe
- Animal Production and Health Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, 2444 Seibersdorf, Austria
| | - R. P. V. Jayanthe Rajapakse
- Department of Veterinary Pathobiology, Faculty of Veterinary Medicine and Animal Science, University of Peradeniya, Kandy 20400, Sri Lanka
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Ruiz-Montoya L, Sánchez-Rosario M, López-Gómez E, Garcia-Bautista M, Canedo-Texón A, Haymer D, Liedo P. Mass-Rearing Conditions Do Not Always Reduce Genetic Diversity: The Case of the Mexican Fruit Fly, Anastrepha ludens (Diptera: Tephritidae). Insects 2024; 15:56. [PMID: 38249062 PMCID: PMC10816967 DOI: 10.3390/insects15010056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/21/2023] [Accepted: 01/11/2024] [Indexed: 01/23/2024]
Abstract
The application of the sterile insect technique (SIT) requires the adaptation of insects to mass-rearing conditions. It is generally accepted that this adaptation may include a reduction in genetic diversity and an associated loss of desirable characteristics for the effective performance of sterile insects in the field. Here, we compare the genetic diversity of two mass-reared strains of the Mexican fruit fly, Anastrepha ludens, and a wild (WIL) population collected near Tapachula, Mexico, using seven DNA microsatellites as molecular genetic markers. The mass-reared strains were a bisexual laboratory strain (LAB) with approximately 130 generations under mass-rearing and a genetic sexing strain, Tapachula-7 (TA7), also under mass-rearing for 100 generations. Our results revealed an overall low level of genetic differentiation (approximately 15%) among the three strains, with the LAB and WIL populations being genetically most similar and TA7 most genetically differentiated. Although there were some differences in allele frequencies between strains, our results show that overall, the adaptation to mass-rearing conditions did not reduce genetic variability compared to the wild sample in terms of heterozygosity or allelic richness, nor did it appear to alter the level of inbreeding with respect to the wild populations. These results are contrary to the general idea that mass-rearing always results in a reduction in genetic diversity. Overall, our findings can contribute to a better understanding of the impact that adaptation to mass-rearing conditions may have on the genetic make-up of strains.
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Affiliation(s)
- Lorena Ruiz-Montoya
- El Colegio de la Frontera Sur (ECOSUR), Carretera Panamericana y Periférico Sur, Barrio María Auxiliadora, San Cristóbal de las Casas 29290, Chiapas, Mexico;
| | - Mayren Sánchez-Rosario
- El Colegio de la Frontera Sur (ECOSUR), Carretera Antiguo Aeropuerto, Tapachula 30700, Chiapas, Mexico; (M.S.-R.); (P.L.)
| | - Emiliano López-Gómez
- Instituto de Biociencias, Universidad Autónoma de Chiapas, Boulevard Príncipe Akishino Sin Número Colonia Solidaridad 2000, Tapachula 30798, Chiapas, Mexico;
| | - Maricela Garcia-Bautista
- El Colegio de la Frontera Sur (ECOSUR), Carretera Panamericana y Periférico Sur, Barrio María Auxiliadora, San Cristóbal de las Casas 29290, Chiapas, Mexico;
| | - Anahí Canedo-Texón
- El Colegio de la Frontera Sur (ECOSUR), Carretera Panamericana y Periférico Sur, Barrio María Auxiliadora, San Cristóbal de las Casas 29290, Chiapas, Mexico;
| | - David Haymer
- Department of Cell and Molecular Biology, University of Hawaii, 1960 East-West Rd, Biomed T511, Honolulu, HI 96822, USA;
| | - Pablo Liedo
- El Colegio de la Frontera Sur (ECOSUR), Carretera Antiguo Aeropuerto, Tapachula 30700, Chiapas, Mexico; (M.S.-R.); (P.L.)
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Korde A, Patt M, Selivanova SV, Scott AM, Hesselmann R, Kiss O, Ramamoorthy N, Todde S, Rubow SM, Gwaza L, Lyashchenko S, Andersson J, Hockley B, Kaslival R, Decristoforo C. Position paper to facilitate patient access to radiopharmaceuticals: considerations for a suitable pharmaceutical regulatory framework. EJNMMI Radiopharm Chem 2024; 9:2. [PMID: 38165504 PMCID: PMC10761641 DOI: 10.1186/s41181-023-00230-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 12/13/2023] [Indexed: 01/03/2024] Open
Abstract
BACKGROUND Nuclear medicine has made enormous progress in the past decades. However, there are still significant inequalities in patient access among different countries, which could be mitigated by improving access to and availability of radiopharmaceuticals. MAIN BODY This paper summarises major considerations for a suitable pharmaceutical regulatory framework to facilitate patient access to radiopharmaceuticals. These include the distinct characteristics of radiopharmaceuticals which require dedicated regulations, considering the impact of the variable complexity of radiopharmaceutical preparation, personnel requirements, manufacturing practices and quality assurance, regulatory authority interfaces, communication and training, as well as marketing authorisation procedures to ensure availability of radiopharmaceuticals. Finally, domestic and regional supply to ensure patient access via alternative regulatory pathways, including in-house production of radiopharmaceuticals, is described, and an outlook on regulatory challenges faced by new developments, such as the use of alpha emitters, is provided. CONCLUSIONS All these considerations are an outcome of a dedicated Technical Meeting organised by the IAEA in 2023 and represent the views and opinions of experts in the field, not those of any regulatory authorities.
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Affiliation(s)
- Aruna Korde
- Division of Physical and Chemical Sciences, Department of Nuclear Sciences and Applications, International Atomic Energy Agency, Vienna, Austria
| | - Marianne Patt
- Section Radiopharmacy, Department of Nuclear Medicine, University Hospital Augsburg, Augsburg, Germany
| | - Svetlana V Selivanova
- Canadian Nuclear Laboratories, Chalk River, ON, Canada
- Faculty of Pharmacy, Universite Laval, Quebec City, QC, Canada
| | - Andrew M Scott
- Department of Molecular Imaging and Therapy, Austin Health, and Faculty of Medicine, University of Melbourne, Melbourne, Australia
- Olivia Newton-John Cancer Research Institute, and School of Cancer Medicine, La Trobe University, Melbourne, Australia
| | - Rolf Hesselmann
- Health Protection Directorate, Radiation Protection Division, Section for Research Facilities and Nuclear Medicine, Federal Office of Public Health, Bern, Switzerland
| | - Oliver Kiss
- Department of Targetry, Target Chemistry and Radiopharmacy, Institute for Radipopharmaceutical Cancer Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany
| | | | - Sergio Todde
- Department of Medicine and Surgery, University of Milano-Bicocca, Tecnomed Foundation, Via Pergolesi, 33, 20900, Monza, Italy
| | - Sietske M Rubow
- Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Luther Gwaza
- Health Products Policy and Standards Department, World Health Organization, Geneva, Switzerland
| | - Serge Lyashchenko
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Jan Andersson
- Edmonton Radiopharmaceutical Centre, Alberta Health Services, Edmonton, Canada
- Department of Oncology, University of Alberta, Edmonton, Canada
| | - Brian Hockley
- Division of Nuclear Medicine, Department of Radiology, University of Michigan, Ann Arbor, MI, USA
| | - Ravindra Kaslival
- Office of New Drug Products, Office of Pharmaceutical Quality, CDER, U.S. Food and Drug Administration, Silver Spring, MD, USA
| | - Clemens Decristoforo
- Department of Nuclear Medicine, Medical University Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria.
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Dera KSM, Dieng MM, Moyaba P, Ouedraogo GMS, Pagabeleguem S, Njokou F, Ngambia Freitas FS, de Beer CJ, Mach RL, Vreysen MJB, Abd-Alla AMM. Prevalence of Spiroplasma and interaction with wild Glossina tachinoides microbiota. Parasite 2023; 30:62. [PMID: 38117272 PMCID: PMC10732139 DOI: 10.1051/parasite/2023064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 11/28/2023] [Indexed: 12/21/2023] Open
Abstract
Tsetse flies (Diptera: Glossinidae) are vectors of the tropical neglected diseases sleeping sickness in humans and nagana in animals. The elimination of these diseases is linked to control of the vector. The sterile insect technique (SIT) is an environment-friendly method that has been shown to be effective when applied in an area-wide integrated pest management approach. However, as irradiated males conserve their vectorial competence, there is the potential risk of trypanosome transmission with their release in the field. Analyzing the interaction between the tsetse fly and its microbiota, and between different microbiota and the trypanosome, might provide important information to enhance the fly's resistance to trypanosome infection. This study on the prevalence of Spiroplasma in wild populations of seven tsetse species from East, West, Central and Southern Africa showed that Spiroplasma is present only in Glossina fuscipes fuscipes and Glossina tachinoides. In G. tachinoides, a significant deviation from independence in co-infection with Spiroplasma and Trypanosoma spp. was observed. Moreover, Spiroplasma infections seem to significantly reduce the density of the trypanosomes, suggesting that Spiroplasma might enhance tsetse fly's refractoriness to the trypanosome infections. This finding might be useful to reduce risks associated with the release of sterile males during SIT implementation in trypanosome endemic areas.
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Affiliation(s)
- Kiswend-Sida M Dera
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture 1400 Vienna Austria
- Insectarium de Bobo Dioulasso – Campagne d’Eradication de la mouche tsetse et de la Trypanosomose (IBD-CETT) 01 BP 1087 Bobo Dioulasso 01 Burkina Faso
| | - Mouhamadou M Dieng
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture 1400 Vienna Austria
- Université Gaston Berger Saint Louis Senegal
| | - Percy Moyaba
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture 1400 Vienna Austria
- Epidemiology, Parasites and Vectors, Agricultural Research Council-Onderstepoort Veterinary Research (ARC-OVR) Pretoria South Africa
| | - Gisele MS Ouedraogo
- Insectarium de Bobo Dioulasso – Campagne d’Eradication de la mouche tsetse et de la Trypanosomose (IBD-CETT) 01 BP 1087 Bobo Dioulasso 01 Burkina Faso
| | - Soumaïla Pagabeleguem
- Insectarium de Bobo Dioulasso – Campagne d’Eradication de la mouche tsetse et de la Trypanosomose (IBD-CETT) 01 BP 1087 Bobo Dioulasso 01 Burkina Faso
- University of Dedougou B.P. 176 Dédougou 01 Burkina Faso
| | - Flobert Njokou
- Laboratory of Parasitology and Ecology, Faculty of Sciences, University of Yaounde I Po. Box 812 Yaoundé Cameroon
| | | | - Chantel J de Beer
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture 1400 Vienna Austria
| | - Robert L Mach
- Institute of Chemical, Environmental, and Bioscience Engineering, Research Area Biochemical Technology, Vienna University of Technology, Gumpendorfer Straße 1a 1060 Vienna Austria
| | - Marc JB Vreysen
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture 1400 Vienna Austria
| | - Adly MM Abd-Alla
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture 1400 Vienna Austria
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Pascacio-Villafán C, Caravantes-Villatoro LA, Osorio-Paz I, Guillén L, García HS, Enciso-Ortiz E, Altúzar-Molina A, Barran-Prior R, Aluja M. Larval Rearing and Nutrition of the Polyphagous Tephritid Pest Anastrepha ludens on Artificial Diets with Calcium Alginate, Agar, or Carrageenan as Gelling Agents at Various Concentrations and across Extreme Larval Density Conditions. Insects 2023; 14:952. [PMID: 38132628 PMCID: PMC10743761 DOI: 10.3390/insects14120952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 12/08/2023] [Accepted: 12/11/2023] [Indexed: 12/23/2023]
Abstract
Research on larval rearing and nutrition of tephritid flies on artificial diets is key for the sterile insect technique. Here, we examined the effects of the type of gel (calcium alginate, agar, or carrageenan), at varying percentages in artificial diets for the polyphagous pest Anastrepha ludens, on the physicochemical and nutritional traits of the diets, and the effects of the type of gel, the gel content and the larval density (larvae/g of diet) used in production, quality parameters for mass-reared tephritids, diet removal (an indirect estimation of diet consumption), and nutritional traits of flies. Regardless of the gel content, calcium alginate diets were firmer and more resistant to penetration than the agar and carrageenan diets. The larval recovery, pupation, pupal weight, and flight ability of A. ludens were lower in calcium alginate diets than in agar and carrageenan diets. Diet removal was higher in calcium alginate diets; however, low levels of ammonium and high levels of uric acid in excretions from larvae on these diets suggest an alteration in protein metabolism. The firmness and penetration resistance characteristics of calcium alginate diets may have limited movement and feeding of larvae, but this could be overcome by the collective feeding of large groups of larvae. Our findings provide insights into the mechanism governing gel-diet rearing systems for A. ludens.
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Affiliation(s)
- Carlos Pascacio-Villafán
- Red de Manejo Biorracional de Plagas y Vectores, Clúster Científico y Tecnológico BioMimic®, Instituto de Ecología, A.C., Xalapa 91073, Veracruz, Mexico; (L.A.C.-V.); (I.O.-P.); (L.G.); (E.E.-O.); (A.A.-M.); (R.B.-P.); (M.A.)
| | - Luis A. Caravantes-Villatoro
- Red de Manejo Biorracional de Plagas y Vectores, Clúster Científico y Tecnológico BioMimic®, Instituto de Ecología, A.C., Xalapa 91073, Veracruz, Mexico; (L.A.C.-V.); (I.O.-P.); (L.G.); (E.E.-O.); (A.A.-M.); (R.B.-P.); (M.A.)
| | - Ixchel Osorio-Paz
- Red de Manejo Biorracional de Plagas y Vectores, Clúster Científico y Tecnológico BioMimic®, Instituto de Ecología, A.C., Xalapa 91073, Veracruz, Mexico; (L.A.C.-V.); (I.O.-P.); (L.G.); (E.E.-O.); (A.A.-M.); (R.B.-P.); (M.A.)
| | - Larissa Guillén
- Red de Manejo Biorracional de Plagas y Vectores, Clúster Científico y Tecnológico BioMimic®, Instituto de Ecología, A.C., Xalapa 91073, Veracruz, Mexico; (L.A.C.-V.); (I.O.-P.); (L.G.); (E.E.-O.); (A.A.-M.); (R.B.-P.); (M.A.)
| | - Hugo S. García
- Unidad de Investigación y Desarrollo de Alimentos, Tecnológico Nacional de México, Instituto Tecnológico de Veracruz, Veracruz 91897, Veracruz, Mexico;
| | - Erick Enciso-Ortiz
- Red de Manejo Biorracional de Plagas y Vectores, Clúster Científico y Tecnológico BioMimic®, Instituto de Ecología, A.C., Xalapa 91073, Veracruz, Mexico; (L.A.C.-V.); (I.O.-P.); (L.G.); (E.E.-O.); (A.A.-M.); (R.B.-P.); (M.A.)
| | - Alma Altúzar-Molina
- Red de Manejo Biorracional de Plagas y Vectores, Clúster Científico y Tecnológico BioMimic®, Instituto de Ecología, A.C., Xalapa 91073, Veracruz, Mexico; (L.A.C.-V.); (I.O.-P.); (L.G.); (E.E.-O.); (A.A.-M.); (R.B.-P.); (M.A.)
| | - Roxana Barran-Prior
- Red de Manejo Biorracional de Plagas y Vectores, Clúster Científico y Tecnológico BioMimic®, Instituto de Ecología, A.C., Xalapa 91073, Veracruz, Mexico; (L.A.C.-V.); (I.O.-P.); (L.G.); (E.E.-O.); (A.A.-M.); (R.B.-P.); (M.A.)
| | - Martín Aluja
- Red de Manejo Biorracional de Plagas y Vectores, Clúster Científico y Tecnológico BioMimic®, Instituto de Ecología, A.C., Xalapa 91073, Veracruz, Mexico; (L.A.C.-V.); (I.O.-P.); (L.G.); (E.E.-O.); (A.A.-M.); (R.B.-P.); (M.A.)
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21
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Casal D, Casimiro MH, Ferreira LM, Leal JP, Rodrigues G, Lopes R, Moura DL, Gonçalves L, Lago JB, Pais D, Santos PMP. Review of Piezoelectrical Materials Potentially Useful for Peripheral Nerve Repair. Biomedicines 2023; 11:3195. [PMID: 38137416 PMCID: PMC10740581 DOI: 10.3390/biomedicines11123195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Revised: 11/21/2023] [Accepted: 11/29/2023] [Indexed: 12/24/2023] Open
Abstract
It has increasingly been recognized that electrical currents play a pivotal role in cell migration and tissue repair, in a process named "galvanotaxis". In this review, we summarize the current evidence supporting the potential benefits of electric stimulation (ES) in the physiology of peripheral nerve repair (PNR). Moreover, we discuss the potential of piezoelectric materials in this context. The use of these materials has deserved great attention, as the movement of the body or of the external environment can be used to power internally the electrical properties of devices used for providing ES or acting as sensory receptors in artificial skin (e-skin). The fact that organic materials sustain spontaneous degradation inside the body means their piezoelectric effect is limited in duration. In the case of PNR, this is not necessarily problematic, as ES is only required during the regeneration period. Arguably, piezoelectric materials have the potential to revolutionize PNR with new biomedical devices that range from scaffolds and nerve-guiding conduits to sensory or efferent components of e-skin. However, much remains to be learned regarding piezoelectric materials, their use in manufacturing of biomedical devices, and their sterilization process, to fine-tune their safe, effective, and predictable in vivo application.
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Affiliation(s)
- Diogo Casal
- Departamento de Anatomia, NOVA Medical School|Faculdade de Ciências Médicas (NMS|FCM), Universidade NOVA de Lisboa, 1169-056 Lisboa, Portugal; (L.G.); (D.P.)
- Plastic and Reconstructive Surgery Department and Burn Unit, Centro Hospitalar Universitário de Lisboa Central, Rua José António Serrano, 1169-045 Lisbon, Portugal
| | - Maria Helena Casimiro
- Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico (IST), Universidade de Lisboa, 2695-066 Bobadela, Portugal; (M.H.C.); (P.M.P.S.)
| | - Luís M. Ferreira
- Departamento de Engenharia e Ciências Nucleares (DECN), Instituto Superior Técnico (IST), Universidade de Lisboa, 2695-066 Bobadela, Portugal;
| | - João Paulo Leal
- Centro de Química Estrutural (CQE), Institute of Molecular Sciences (IMS), Instituto Superior Técnico (IST), Universidade de Lisboa, 2695-066 Bobadela, Portugal;
| | - Gabriela Rodrigues
- Centro de Ecologia, Evolução e Alterações Ambientais (cE3c) & CHANGE—Global Change and Sustainability Institute, Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa (FCUL), 1749-016 Lisboa, Portugal;
| | - Raquel Lopes
- Gynaecology and Obstetrics Department, Maternidade Alfredo da Costa, Centro Hospitalar Universitário de Lisboa Central, R. Viriato 1, 2890-495 Lisboa, Portugal;
| | - Diogo Lino Moura
- Anatomy Institute and Orthopedics Department, Faculty of Medicine, University of Coimbra, 3004-504 Coimbra, Portugal;
- Spine Unit, Orthopedics Department, Coimbra University Hospital, 3000-602 Coimbra, Portugal
| | - Luís Gonçalves
- Departamento de Anatomia, NOVA Medical School|Faculdade de Ciências Médicas (NMS|FCM), Universidade NOVA de Lisboa, 1169-056 Lisboa, Portugal; (L.G.); (D.P.)
| | - João B. Lago
- Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa (FCUL), 1749-016 Lisboa, Portugal;
| | - Diogo Pais
- Departamento de Anatomia, NOVA Medical School|Faculdade de Ciências Médicas (NMS|FCM), Universidade NOVA de Lisboa, 1169-056 Lisboa, Portugal; (L.G.); (D.P.)
| | - Pedro M. P. Santos
- Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico (IST), Universidade de Lisboa, 2695-066 Bobadela, Portugal; (M.H.C.); (P.M.P.S.)
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22
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Sadeghi MH, Sina S, Alavi M, Giammarile F. The OCDA-Net: a 3D convolutional neural network-based system for classification and staging of ovarian cancer patients using [ 18F]FDG PET/CT examinations. Ann Nucl Med 2023; 37:645-654. [PMID: 37768493 DOI: 10.1007/s12149-023-01867-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 09/11/2023] [Indexed: 09/29/2023]
Abstract
OBJECTIVE To create the 3D convolutional neural network (CNN)-based system that can use whole-body [18F]FDG PET for recurrence/post-therapy surveillance in ovarian cancer (OC). METHODS In this study, 1224 image sets from OC patients who underwent whole-body [18F]FDG PET/CT at Kowsar Hospital between April 2019 and May 2022 were investigated. For recurrence/post-therapy surveillance, diagnostic classification as cancerous, and non-cancerous and staging as stage III, and stage IV were determined by pathological diagnosis and specialists' interpretation. New deep neural network algorithms, the OCDAc-Net, and the OCDAs-Net were developed for diagnostic classification and staging of OC patients using [18F]FDG PET/CT images. Examinations were divided into independent training (75%), validation (10%), and testing (15%) subsets. RESULTS This study included 37 women (mean age 56.3 years; age range 36-83 years). Data augmentation techniques were applied to the images in two phases. There were 1224 image sets for diagnostic classification and staging. For the test set, 170 image sets were considered for diagnostic classification and staging. The OCDAc-Net areas under the receiver operating characteristic curve (AUCs) and overall accuracy for diagnostic classification were 0.990 and 0.92, respectively. The OCDAs-Net achieved areas under the receiver operating characteristic curve (AUCs) of 0.995 and overall accuracy of 0.94 for staging. CONCLUSIONS The proposed 3D CNN-based models provide potential tools for recurrence/post-therapy surveillance in OC. The OCDAc-Net and the OCDAs-Net model provide a new prognostic analysis method that can utilize PET images without pathological findings for diagnostic classification and staging.
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Affiliation(s)
- Mohammad Hossein Sadeghi
- Nuclear Engineering Department, School of Mechanical Engineering, Shiraz University, Shiraz, Iran
| | - Sedigheh Sina
- Nuclear Engineering Department, School of Mechanical Engineering, Shiraz University, Shiraz, Iran.
- Radiation Research Center, School of Mechanical Engineering, Shiraz University, Shiraz, Iran.
| | - Mehrosadat Alavi
- Department of Nuclear Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Francesco Giammarile
- Nuclear Medicine and Diagnostic Imaging Section, Division of Human Health, International Atomic Energy Agency, Vienna, Austria
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23
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Sombié OO, Zeba AN, Somé JW, Kazienga A, Diendere J, Bationo JF, Davis C, Grahn M, Tanumihardjo S, De Henauw S, Abbeddou S. Dietary intake of preformed vitamin A and provitamin A carotenoids are not associated with serum retinol and carotenoid concentrations among children 36-59 months of age in rural Burkina Faso: a cross-sectional study. Eur J Nutr 2023; 62:3311-3327. [PMID: 37589896 DOI: 10.1007/s00394-023-03194-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Accepted: 06/09/2023] [Indexed: 08/18/2023]
Abstract
PURPOSE This study aimed to assess the association between dietary intake of preformed vitamin A (VA) and pro-VA carotenoids and serum retinol and carotenoid concentrations among 36-59-month-old children in a rural area in Burkina Faso. METHODS Two community-based cross-sectional studies were conducted in a rural area of Burkina Faso and included 115 children aged 36-59 months. Dietary intake of preformed VA and pro-VA was assessed directly by 24-h dietary recall. Serum retinol and carotenoid (α- and β-carotene, and β-cryptoxanthin) concentrations were measured. The associations between serum retinol and carotenoid concentrations and their respective dietary intake were assessed by multiple linear regression. RESULTS Geometric mean [95% CI] adjusted serum retinol concentration in children was 0.86 [0.81; 0.92] µmol/L. The prevalence of low adjusted serum retinol concentration (< 0.7 µmol/L) was 26.8%. Geometric mean [95% CI] serum carotenoid concentrations were: α-carotene (0.03 [0.02; 0.03] µmol/L), β-carotene (0.14 [0.12; 0.16] µmol/L), and β-cryptoxanthin (0.17 [0.15; 0.21] µmol/L). Dietary intakes of α- and β-carotene and adjusted serum retinol and α-carotene concentrations were significantly higher during the rainy season. In multiple linear regressions, no associations were found between dietary intakes of preformed VA and pro-VA carotenoids and serum retinol and carotenoid concentrations in children aged 36-59 months in Burkina Faso. There was no effect of season on the associations between preformed VA and pro-VA carotenoids intake and serum retinol and carotenoid concentrations. CONCLUSIONS This study shows that dietary intakes of preformed VA and pro-VA carotenoids based on 24-h dietary recall method cannot be used as proxy of serum retinol and carotenoid concentrations in this population. TRIAL REGISTRATION The study was registered retrospectively (22 March 2018) as a clinical trial with the Pan African Clinical Trials Registry (Cochrane South Africa; PACTR201803002999356).
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Affiliation(s)
- Olivier O Sombié
- Unité Nutrition et Maladies Métaboliques, Institut de Recherche en Sciences de la Santé/Direction Régionale de l'Ouest, Bobo Dioulasso, Burkina Faso.
- Public Health Nutrition Unit, Department of Public Health and Primary Care, Faculty of Health Sciences, Ghent University, 9000, Ghent, Belgium.
| | - Augustin N Zeba
- Unité Nutrition et Maladies Métaboliques, Institut de Recherche en Sciences de la Santé/Direction Régionale de l'Ouest, Bobo Dioulasso, Burkina Faso
| | - Jérome W Somé
- Unité Nutrition et Maladies Métaboliques, Institut de Recherche en Sciences de la Santé, Ouagadougou, Burkina Faso
| | - Adama Kazienga
- Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Jeoffray Diendere
- Unité Nutrition et Maladies Métaboliques, Institut de Recherche en Sciences de la Santé/Direction Régionale de l'Ouest, Bobo Dioulasso, Burkina Faso
| | - Jean F Bationo
- African Union Development Agency-New Partnership for Africa's Development, Midrand, South Africa
| | - Christopher Davis
- Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, USA
| | - Michael Grahn
- Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, USA
| | - Sherry Tanumihardjo
- Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, USA
| | - Stefaan De Henauw
- Public Health Nutrition Unit, Department of Public Health and Primary Care, Faculty of Health Sciences, Ghent University, 9000, Ghent, Belgium
| | - Souheila Abbeddou
- Public Health Nutrition Unit, Department of Public Health and Primary Care, Faculty of Health Sciences, Ghent University, 9000, Ghent, Belgium
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Masekane MC, Msimanga M, Bogdanović Radović I, Madhuku M, Moloi SJ. Semi-empirical parameterization of HI/p L-shell X-ray production cross section ratios in Bi for Heavy Ion PIXE. Sci Rep 2023; 13:20942. [PMID: 38017034 PMCID: PMC10684581 DOI: 10.1038/s41598-023-48217-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 11/23/2023] [Indexed: 11/30/2023] Open
Abstract
Quantitative analysis of materials from Heavy Ion PIXE spectra remains impeded by the lack of reliable X-ray production cross section (XPCS) data. Although efforts at experimental Heavy Ion induced XPCS measurements still continue, Multiple Ionisation (MI) effects, which are not fully described by theory, render simulations of heavy ion PIXE data unreliable for large Z1/Z2 collisions, especially at low energies. This is also exacerbated by the random selection of projectile-target combinations for measured and reported experimental data available to validate theory. This study explored heavy ion induced X-ray production cross section deviations from those induced by protons at the same ion velocity. This enabled evaluations of the degree to which cross sections are enhanced through MI effects, with the aim of predicting XPCS due to heavy ion impact. The evaluation was carried out through the scaling of experimental heavy ion to theoretical proton cross section ratios (R), which were then used for the interpolation of XPCS in the same target element for 'missing' projectiles within the range of evaluation. Here we present measurements of heavy ion induced total L-shell XPCS in Bi, carried out to determine HI/p MI induced deviations due to C, F, Cl and Ti projectiles at an ion velocity range of (0.2-1.0) MeV/nucleon.
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Affiliation(s)
- M C Masekane
- Department of Physics, University of South Africa, P Bag X90, Florida, 1710, South Africa.
- Department of Physics, University of Zagreb, Bijenićka C. 32, 10000, Zagreb, Croatia.
- Ruđer Bošković Institute, P.O. Box 1016, 10000, Zagreb, Croatia.
- iThemba LABS TAMS, National Research Foundation, P Bag 11, WITS, Johannesburg, 2050, South Africa.
| | - M Msimanga
- iThemba LABS TAMS, National Research Foundation, P Bag 11, WITS, Johannesburg, 2050, South Africa
- Physics Department, Tshwane University of Technology, P Bag X680, Pretoria, 0001, South Africa
| | | | - M Madhuku
- iThemba LABS TAMS, National Research Foundation, P Bag 11, WITS, Johannesburg, 2050, South Africa
| | - S J Moloi
- Department of Physics, University of South Africa, P Bag X90, Florida, 1710, South Africa
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25
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Pokrant E, Vargas MB, Navarrete MJ, Yévenes K, Trincado L, Cortés P, Maddaleno A, Lapierre L, Cornejo J. Assessing the Effect of Oxytetracycline on the Selection of Resistant Escherichia coli in Treated and Untreated Broiler Chickens. Antibiotics (Basel) 2023; 12:1652. [PMID: 38136686 PMCID: PMC10740798 DOI: 10.3390/antibiotics12121652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/10/2023] [Accepted: 11/18/2023] [Indexed: 12/24/2023] Open
Abstract
Oxytetracycline (OTC) is administered in the poultry industry for the treatment of digestive and respiratory diseases. The use of OTC may contribute to the selection of resistant bacteria in the gastrointestinal tract of birds or in the environment. To determine the effect of OTC on the selection of resistant Escherichia coli strains post-treatment, bacteria were isolated from droppings and litter sampled from untreated and treated birds. Bacterial susceptibility to tetracyclines was determined by the Kirby-Bauer test. A total of 187 resistant isolates were analyzed for the presence of tet(A), (B), (C), (D), (E), and (M) genes by PCR. Fifty-four strains were analyzed by PFGE for subtyping. The proportion of tetracycline-resistant E. coli strains isolated was 42.88%. The susceptibility of the strains was treatment-dependent. A high clonal diversity was observed, with the tet(A) gene being the most prevalent, followed by tet(C). Even at therapeutic doses, there is selection pressure on resistant E. coli strains. The most prevalent resistance genes were tet(A) and tet(C), which could suggest that one of the main mechanisms of resistance of E. coli to tetracyclines is through active efflux pumps.
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Affiliation(s)
- Ekaterina Pokrant
- Laboratory of Food Safety, Department of Preventive Animal Medicine, Faculty of Veterinary and Animal Sciences, University of Chile, Santiago 8820808, Chile; (E.P.); (M.B.V.); (M.J.N.); (K.Y.)
- Doctorate Program of Forestry, Agriculture, and Veterinary Sciences (DCSAV), University of Chile, Av. Santa Rosa 11315, La Pintana, Santiago 8820808, Chile;
- Laboratory of Veterinary Pharmacology (FARMAVET), Faculty of Veterinary and Animal Sciences, University of Chile, Santiago 8820808, Chile; (P.C.); (A.M.)
| | - María Belén Vargas
- Laboratory of Food Safety, Department of Preventive Animal Medicine, Faculty of Veterinary and Animal Sciences, University of Chile, Santiago 8820808, Chile; (E.P.); (M.B.V.); (M.J.N.); (K.Y.)
- Doctorate Program of Forestry, Agriculture, and Veterinary Sciences (DCSAV), University of Chile, Av. Santa Rosa 11315, La Pintana, Santiago 8820808, Chile;
| | - María José Navarrete
- Laboratory of Food Safety, Department of Preventive Animal Medicine, Faculty of Veterinary and Animal Sciences, University of Chile, Santiago 8820808, Chile; (E.P.); (M.B.V.); (M.J.N.); (K.Y.)
| | - Karina Yévenes
- Laboratory of Food Safety, Department of Preventive Animal Medicine, Faculty of Veterinary and Animal Sciences, University of Chile, Santiago 8820808, Chile; (E.P.); (M.B.V.); (M.J.N.); (K.Y.)
- Doctorate Program of Forestry, Agriculture, and Veterinary Sciences (DCSAV), University of Chile, Av. Santa Rosa 11315, La Pintana, Santiago 8820808, Chile;
| | - Lina Trincado
- Doctorate Program of Forestry, Agriculture, and Veterinary Sciences (DCSAV), University of Chile, Av. Santa Rosa 11315, La Pintana, Santiago 8820808, Chile;
- Laboratory of Veterinary Pharmacology (FARMAVET), Faculty of Veterinary and Animal Sciences, University of Chile, Santiago 8820808, Chile; (P.C.); (A.M.)
| | - Paula Cortés
- Laboratory of Veterinary Pharmacology (FARMAVET), Faculty of Veterinary and Animal Sciences, University of Chile, Santiago 8820808, Chile; (P.C.); (A.M.)
| | - Aldo Maddaleno
- Laboratory of Veterinary Pharmacology (FARMAVET), Faculty of Veterinary and Animal Sciences, University of Chile, Santiago 8820808, Chile; (P.C.); (A.M.)
| | - Lisette Lapierre
- Laboratory of Bacterial Pathogens Diagnostic and Antimicrobial Resistance, Department of Preventive Animal Medicine, Faculty of Veterinary and Animal Sciences, University of Chile, Santiago 8820808, Chile
| | - Javiera Cornejo
- Laboratory of Food Safety, Department of Preventive Animal Medicine, Faculty of Veterinary and Animal Sciences, University of Chile, Santiago 8820808, Chile; (E.P.); (M.B.V.); (M.J.N.); (K.Y.)
- Laboratory of Veterinary Pharmacology (FARMAVET), Faculty of Veterinary and Animal Sciences, University of Chile, Santiago 8820808, Chile; (P.C.); (A.M.)
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26
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Ocampo-García B, Cruz-Nova P, Jiménez-Mancilla N, Luna-Gutiérrez M, Oros-Pantoja R, Lara-Almazán N, Pérez-Velasco D, Santos-Cuevas C, Ferro-Flores G. 225Ac-iPSMA-RGD for Alpha-Therapy Dual Targeting of Stromal/Tumor Cell PSMA and Integrins. Int J Mol Sci 2023; 24:16553. [PMID: 38068876 PMCID: PMC10705946 DOI: 10.3390/ijms242316553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 11/07/2023] [Accepted: 11/08/2023] [Indexed: 12/18/2023] Open
Abstract
Prostate-specific membrane antigens (PSMAs) are frequently overexpressed in both tumor stromal endothelial cells and malignant cells (stromal/tumor cells) of various cancers. The RGD (Arg-Gly-Asp) peptide sequence can specifically detect integrins involved in tumor angiogenesis. This study aimed to preclinically evaluate the cytotoxicity, biokinetics, dosimetry, and therapeutic efficacy of 225Ac-iPSMA-RGD to determine its potential as an improved radiopharmaceutical for alpha therapy compared with the 225Ac-iPSMA and 225Ac-RGD monomers. HEHA-HYNIC-iPSMA-RGD (iPSMA-RGD) was synthesized and characterized by FT-IR, UV-vis, and UPLC mass spectroscopy. The cytotoxicity of 225Ac-iPSMA-RGD was assessed in HCT116 colorectal cancer cells. Biodistribution, biokinetics, and therapeutic efficacy were evaluated in nude mice with induced HCT116 tumors. In vitro results showed increased DNA double-strand breaks through ROS generation, cell apoptosis, and death in HCT116 cells treated with 225Ac-iPSMA-RGD. The results also demonstrated in vivo cytotoxicity in cancer cells after treatment with 225Ac-iPSMA-RGD and biokinetic and dosimetric properties suitable for alpha therapy, delivering ablative radiation doses up to 237 Gy/3.7 kBq to HCT116 tumors in mice. Given the phenotype of HCT116 cancer cells, the results of this study warrant further dosimetric and clinical studies to determine the potential of 225Ac-iPSMA-RGD in the treatment of colorectal cancer.
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Affiliation(s)
- Blanca Ocampo-García
- Department of Radioactive Materials, Instituto Nacional de Investigaciones Nucleares, Ocoyoacac 52750, Mexico; (P.C.-N.); (M.L.-G.); (N.L.-A.); (G.F.-F.)
| | - Pedro Cruz-Nova
- Department of Radioactive Materials, Instituto Nacional de Investigaciones Nucleares, Ocoyoacac 52750, Mexico; (P.C.-N.); (M.L.-G.); (N.L.-A.); (G.F.-F.)
| | | | - Myrna Luna-Gutiérrez
- Department of Radioactive Materials, Instituto Nacional de Investigaciones Nucleares, Ocoyoacac 52750, Mexico; (P.C.-N.); (M.L.-G.); (N.L.-A.); (G.F.-F.)
| | | | - Nancy Lara-Almazán
- Department of Radioactive Materials, Instituto Nacional de Investigaciones Nucleares, Ocoyoacac 52750, Mexico; (P.C.-N.); (M.L.-G.); (N.L.-A.); (G.F.-F.)
| | - Diana Pérez-Velasco
- Faculty of Chemistry, Universidad Autónoma del Estado de México, Toluca 50180, Mexico;
| | - Clara Santos-Cuevas
- Department of Radioactive Materials, Instituto Nacional de Investigaciones Nucleares, Ocoyoacac 52750, Mexico; (P.C.-N.); (M.L.-G.); (N.L.-A.); (G.F.-F.)
| | - Guillermina Ferro-Flores
- Department of Radioactive Materials, Instituto Nacional de Investigaciones Nucleares, Ocoyoacac 52750, Mexico; (P.C.-N.); (M.L.-G.); (N.L.-A.); (G.F.-F.)
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Jalilian A, Decristoforo C, Denecke M, Elsinga PH, Hoehr C, Korde A, Lapi SE, Scott PJH. Proceedings of international symposium of trends in radiopharmaceuticals 2023 (ISTR-2023). EJNMMI Radiopharm Chem 2023; 8:39. [PMID: 37950112 PMCID: PMC10638263 DOI: 10.1186/s41181-023-00224-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 10/29/2023] [Indexed: 11/12/2023] Open
Abstract
The International Atomic Energy Agency (IAEA) held the 3rd International Symposium on Trends in Radiopharmaceuticals, (ISTR-2023) at IAEA Headquarters in Vienna, Austria, during the week of 16-21 April 2023. This procedural paper summarizes highlights from symposium presentations, posters, panel discussions and satellite meetings, and provides additional resources that may be useful to researchers working with diagnostic and therapeutic radiopharmaceuticals in the academic, government and industry setting amongst IAEA Member States and beyond. More than 550 participants in person from 88 Member States attended the ISTR-2023. Over 360 abstracts were presented from all over the world by a diverse group of global scientists working with radiopharmaceuticals. Given this group of international radiochemists is unique to ISTR (IAEA funding enabled many to attend), there was an invaluable wealth of knowledge on the global state of the radiopharmaceutical sciences present at the meeting. The intent of this Proceedings paper is to share this snapshot from our international colleagues with the broader radiopharmaceutical sciences community by highlighting presentations from the conference on the following topics: Isotope Production and Radiochemistry, Industrial Insights, Regional Trends, Training and Education, Women in the Radiopharmaceutical Sciences, and Future Perspectives and New Initiatives. The authors of this paper are employees of IAEA, members of the ISTR-2023 Organizing Committee and/or members of the EJNMMI Radiopharmacy and Chemistry Editorial Board who attended ISTR-2023. Overall, ISTR-2023 fostered the successful exchange of scientific ideas around every aspect of the radiopharmaceutical sciences. It was well attended by a diverse mix of radiopharmaceutical scientists from all over the world, and the oral and poster presentations provided a valuable update on the current state-of-the-art of the field amongst IAEA Member States. Presentations as well as networking amongst the attendees resulted in extensive knowledge transfer amongst the various stakeholders representing 88 IAEA Member States. This was considered particularly valuable for attendees from Member States where nuclear medicine and the radiopharmaceutical sciences are still relatively new. Since the goal is for the symposium series to be held every four years; the next one is anticipated to take place in 2027.
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Affiliation(s)
- Amirreza Jalilian
- Division of Physical and Chemical Sciences, International Atomic Energy Agency, Vienna, Austria
| | - Clemens Decristoforo
- Department of Nuclear Medicine, Medical University Innsbruck, Innsbruck, Austria
| | - Melissa Denecke
- Division of Physical and Chemical Sciences, International Atomic Energy Agency, Vienna, Austria
| | - Philip H Elsinga
- Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, Groningen, The Netherlands
| | | | - Aruna Korde
- Division of Physical and Chemical Sciences, International Atomic Energy Agency, Vienna, Austria
| | - Suzanne E Lapi
- Departments of Radiology and Chemistry, O'Neal Comprehensive Cancer Center at UAB, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Peter J H Scott
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA.
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Hernández-Méndez B, Balcázar M, Carranza AÁ, Suárez-Contreras S, Ponce EQ, Robles MB, Meza JCS, Segura EEG. Environmental radiological baseline in unconventional oil and gas areas of Mexico. Radiat Prot Dosimetry 2023; 199:2189-2193. [PMID: 37934983 DOI: 10.1093/rpd/ncad257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 07/27/2023] [Accepted: 08/22/2023] [Indexed: 11/09/2023]
Abstract
Environmental radioactivity study was performed in unconventional hydrocarbons areas for the first time in Mexico, where four unconventional hydrocarbon exploratory wells (UHEW) are planned. This study assesses natural radiological conditions in areas around UHEW. Equivalent dose rate distribution displayed in Geographic Information System (GIS) had a maximum of 1.83 mSv a-1 and minimum of 0.04 mSv a-1, GIS was also used for introducing land usage, water resources and population occupancy. Measurements of gross alpha and gross beta in water were below the national permissible limits for drinking water 0.5 and 1.0 Bq L-1 respectively, even though samples do not correspond to drinking water. Evaluation of 238U and 226Ra in groundwater were below minimum detectable concentration 1.3 and 1.0 Bq L-1, respectively. This study provides a radiological baseline for the impact of future industrial activities, especially if exploitation of unconventional hydrocarbons produces naturally occurring radioactive material.
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Affiliation(s)
- Beatriz Hernández-Méndez
- Instituto Nacional de Investigaciones Nucleares, Carretera México-Toluca S/N, C.P. 52750, La Marquesa, Ocoyoacac, Estado de México
| | - Miguel Balcázar
- Instituto Nacional de Investigaciones Nucleares, Carretera México-Toluca S/N, C.P. 52750, La Marquesa, Ocoyoacac, Estado de México
| | - Arturo Ángeles Carranza
- Instituto Nacional de Investigaciones Nucleares, Carretera México-Toluca S/N, C.P. 52750, La Marquesa, Ocoyoacac, Estado de México
| | - Sergio Suárez-Contreras
- Instituto Nacional de Investigaciones Nucleares, Carretera México-Toluca S/N, C.P. 52750, La Marquesa, Ocoyoacac, Estado de México
| | - Esperanza Quintero Ponce
- Instituto Nacional de Investigaciones Nucleares, Carretera México-Toluca S/N, C.P. 52750, La Marquesa, Ocoyoacac, Estado de México
| | - Mario Bárcenas Robles
- Instituto Nacional de Investigaciones Nucleares, Carretera México-Toluca S/N, C.P. 52750, La Marquesa, Ocoyoacac, Estado de México
| | - Juan Carlos Sánchez Meza
- Universidad Autónoma del Estado de México. Paseo Colón S/N, Residencial Colón y Col Ciprés, C.P. 50120, Toluca de Lerdo, Estado de México
| | - Edith Erielia Gutiérrez Segura
- Universidad Autónoma del Estado de México. Paseo Colón S/N, Residencial Colón y Col Ciprés, C.P. 50120, Toluca de Lerdo, Estado de México
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Mohamad NA, Nasef MM, Abdullah TAT, Ahmad A, Ting TM. CO 2 adsorption and CO 2/CH 4 separation using fibrous amine-containing adsorbents: isothermal, kinetic, and thermodynamic behaviours. Environ Sci Pollut Res Int 2023; 30:116906-116920. [PMID: 37121947 DOI: 10.1007/s11356-023-26913-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 04/05/2023] [Indexed: 06/19/2023]
Abstract
A series of fibrous aminated adsorbents for CO2 adsorption were prepared by covalent incorporation of poly (glycidyl methacrylate) (PGMA) by graft copolymerization of GMA onto electron beam (EB) irradiated polyethylenepolypropylene (PE/PP) fibrous sheets and subsequent amination with ethylenediamine (EDA), diethylenetriamine (DETA), or tetraethylenepentamine (TEPA). The physico-chemical properties of the adsorbents were evaluated using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermogravimetric (TGA), X-ray diffraction (XRD), and Brunauer-Emmett-Teller (BET) analysis. All the adsorbents displayed typic primary and secondary amine features combined with a decrease in both of crystallinity and surface area of PE/PP, and such a decrease was higher in adsorbents with longer aliphatic chain of the amine. Of all adsorbents, TEPA-containing fibres showed the highest CO2 adsorption capacity and thus was further investigated for CO2 capture from CO2/CH4 mixtures of different gas ratios under various pressures and temperatures. The selectivity of CO2 over CH4 and equilibrium isotherms, kinetics, and thermodynamics of the adsorption on the fibrous aminated adsorbent were all investigated. The Sips model was found to best fit the isotherm of CO2 adsorption suggesting the presence of a combination of monolayer and multilayer adsorptions. The adsorption kinetic data was found to best fit Elovich model reflecting chemisorption. The ΔG°, ΔS°, and ΔH° showed positive values suggesting that the adsorption of CO2 on the present fibrous adsorbent was non-spontaneous with an increase in randomness implying that the process was endothermic. Overall, it can be suggested that PE/PP-g-PGMA/TEPA adsorbent has a strong potential for separation of CO2 from NG.
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Affiliation(s)
- Noor Ashikin Mohamad
- Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia
- Center of Hydrogen Energy, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra 54100, Kuala Lumpur, Malaysia
| | - Mohamed Mahmoud Nasef
- Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia.
- Center of Hydrogen Energy, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra 54100, Kuala Lumpur, Malaysia.
| | - Tuan Amran Tuan Abdullah
- Center of Hydrogen Energy, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra 54100, Kuala Lumpur, Malaysia
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Johor Bahru, Malaysia
| | - Arshad Ahmad
- Center of Hydrogen Energy, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra 54100, Kuala Lumpur, Malaysia
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Johor Bahru, Malaysia
| | - Teo Ming Ting
- Radiation Processing Technology Division, Malaysian Nuclear Agency, 43000, Kajang, Selangor, Malaysia
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Bachirou S, Saïdou, Kranrod C, Nkoulou Ii JEN, Bongue D, Abba HY, Hosoda M, Njock MGK, Tokonami S. Mapping in a radon-prone area in Adamawa region, Cameroon, by measurement of radon activity concentration in soil. Radiat Environ Biophys 2023; 62:427-439. [PMID: 37535128 DOI: 10.1007/s00411-023-01042-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 07/22/2023] [Indexed: 08/04/2023]
Abstract
The radon-prone area of the Adamawa region in Cameroon is characterized by high natural radiation background resulting from the high concentrations of radium-226, thorium-232, and indoor radon. To produce a radon-risk map, radon measurements in soil were carried out in the city of Ngaoundere. The radon activity concentration in soil gas ranged from 256 to 166 kBq m-3 with a mean of 80 kBq m-3 and a standard deviation of 38 kBq m-3. The area is mostly classified as high risk (80%) according to the Swedish classification, and 20% as medium risk. A low-risk area was not observed. Granite-like geology sites were characterized by higher radon concentration. A ratio of about 295:1 was obtained for soil radon gas to indoor radon concentrations, with a positive correlation (R = 0.40), and a transfer factor of 3 per mil. These results demonstrate that in situ measurements of radon concentration in soil can provide accurate information on the level of indoor radon concentrations. Geostatistical and deterministic interpolation techniques have been used to obtain a radon map by comparing the suitability of ordinary kriging and inverse-distance-weighted (IDW) interpolation methods. It turned out that there is not much difference in the prediction errors of the two techniques (Root Mean Square Error = 34.4 for ordinary kriging and 34.3 for IDW). It is concluded that both methods give acceptable results. In situ measurements and geostatistical analysis allow assessment of expected indoor radon exposure in a given area at reduced costs and time required. However, for the investigated area, more research is needed to produce reliable radon-risk maps.
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Affiliation(s)
- Soumayah Bachirou
- Centre for Atomic Molecular Physics and Quantum Optics, University of Douala, PO Box 8580, Douala, Cameroon
- Local Material Promotion Authority, PO BOX 2396, Yaoundé, Cameroon
- Research Centre for Nuclear Science and Technology, Institute of Geological and Mining Research, PO Box 4110, Yaoundé, Cameroon
| | - Saïdou
- Research Centre for Nuclear Science and Technology, Institute of Geological and Mining Research, PO Box 4110, Yaoundé, Cameroon.
- Nuclear Physics Laboratory, Faculty of Science, University of Yaoundé I, PO Box 812, Yaoundé, Cameroon.
| | - Chutima Kranrod
- Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki City, Aomori, 036-8564, Japan
| | - Joseph Emmanuel Ndjana Nkoulou Ii
- Centre for Atomic Molecular Physics and Quantum Optics, University of Douala, PO Box 8580, Douala, Cameroon
- Research Centre for Nuclear Science and Technology, Institute of Geological and Mining Research, PO Box 4110, Yaoundé, Cameroon
| | - Daniel Bongue
- Centre for Atomic Molecular Physics and Quantum Optics, University of Douala, PO Box 8580, Douala, Cameroon
| | - Hamadou Yerima Abba
- Research Centre for Nuclear Science and Technology, Institute of Geological and Mining Research, PO Box 4110, Yaoundé, Cameroon
| | - Masahiro Hosoda
- Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki City, Aomori, 036-8564, Japan
- Department of Radiation Science, Hirosaki University Graduate School of Health Sciences, Hirosaki City, Aomori, Japan
| | - Moise Godfroy Kwato Njock
- Centre for Atomic Molecular Physics and Quantum Optics, University of Douala, PO Box 8580, Douala, Cameroon
| | - Shinji Tokonami
- Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki City, Aomori, 036-8564, Japan
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Vasquez MI, Notarides G, Meletiou S, Patsoula E, Kavran M, Michaelakis A, Bellini R, Toumazi T, Bouyer J, Petrić D. Two invasions at once: update on the introduction of the invasive species Aedes aegypti and Aedes albopictus in Cyprus - a call for action in Europe. Parasite 2023; 30:41. [PMID: 37772845 PMCID: PMC10540676 DOI: 10.1051/parasite/2023043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 09/02/2023] [Indexed: 09/30/2023] Open
Abstract
Aedes aegypti, the yellow fever mosquito and Aedes albopictus, the tiger mosquito, continue to expand their geographical distribution, reshaping the European epidemiological risks for mosquito-borne diseases. The reintroduction of Aedes aegypti near the airport and port in Larnaka and the detection of Aedes albopictus near the marina and old port of the Limassol area in Cyprus are reported herein. The measures taken to investigate these events included (i) communication to health authorities, (ii) expert on-site visits and verification of findings, (iii) enhanced active surveillance, and (iv) development of an Emergency Action Plan followed by a Contingency Plan. These emergency action plans were developed to delimitate the infested areas and to prevent the spreading of the mosquito populations into new areas. The general principles are presented along with their rationale to serve as guidelines for other geographical regions targeting suppression/eradication with a sterile insect technique component. In parallel, this manuscript serves as a call for action at the European level to impede the further spread of these species and support the activities being undertaken in Cyprus to combat the incursions of Aedes invasive species.
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Affiliation(s)
- Marlen Ines Vasquez
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Department of Chemical Engineering, Cyprus University of Technology 3020 Limassol Cyprus
| | - Gregoris Notarides
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Department of Chemical Engineering, Cyprus University of Technology 3020 Limassol Cyprus
| | - Sotiris Meletiou
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Department of Chemical Engineering, Cyprus University of Technology 3020 Limassol Cyprus
| | - Eleni Patsoula
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Faculty of Public Health Policy, Laboratory for Surveillance of Infectious Diseases, School of Public Health, University of West Attica 11521 Athens Greece
| | - Mihaela Kavran
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University of Novi Sad, Faculty of Agriculture, Center of Excellence One Health – Vectors and Climate 21101 Novi Sad Serbia
| | - Antonios Michaelakis
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Laboratory of Insects and Parasites of Medical Importance, Benaki Phytopathological Institute 14561 Athens Greece
| | - Romeo Bellini
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Centro Agricoltura Ambiente “G. Nicoli” 40014 Crevalcore Italy
| | - Toumazis Toumazi
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Department of Chemical Engineering, Cyprus University of Technology 3020 Limassol Cyprus
| | - Jeremy Bouyer
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UMR Astre (Animals, Health, Territories, Risks, Ecosystems), Cirad, Inrae, Univ. Montpellier 34398 Montpellier France
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Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency A-1400 Vienna Austria
| | - Dušan Petrić
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University of Novi Sad, Faculty of Agriculture, Center of Excellence One Health – Vectors and Climate 21101 Novi Sad Serbia
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Gstöttenmayer F, Moyaba P, Rodriguez M, Mulandane FC, Mucache HN, Neves L, De Beer C, Ravel S, De Meeûs T, Mach RL, Vreysen MJB, Abd-Alla AM. Development and characterization of microsatellite markers for the tsetse species Glossina brevipalpis and preliminary population genetics analyses. Parasite 2023; 30:34. [PMID: 37712836 PMCID: PMC10503490 DOI: 10.1051/parasite/2023038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 08/23/2023] [Indexed: 09/16/2023] Open
Abstract
Tsetse flies, the vectors of African trypanosomes are of key medical and economic importance and one of the constraints for the development of Africa. Tsetse fly control is one of the most effective and sustainable strategies used for controlling the disease. Knowledge about population structure and level of gene flow between neighbouring populations of the target vector is of high importance to develop appropriate strategies for implementing effective management programmes. Microsatellites are commonly used to identify population structure and assess dispersal of the target populations and have been developed for several tsetse species but were lacking for Glossina brevipalpis. In this study, we screened the genome of G. brevipalpis to search for suitable microsatellite markers and nine were found to be efficient enough to distinguish between different tsetse populations. The availability of these novel microsatellite loci will help to better understand the population biology of G. brevipalpis and to assess the level of gene flow between different populations. Such information will help with the development of appropriate strategies to implement the sterile insect technique (SIT) in the framework of an area-wide integrated pest management (AW-IPM) approach to manage tsetse populations and ultimately address the trypanosomoses problem in these targeted areas.
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Affiliation(s)
- Fabian Gstöttenmayer
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Vienna International Centre P.O. Box 100 1400 Vienna Austria
| | - Percy Moyaba
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Vienna International Centre P.O. Box 100 1400 Vienna Austria
- Epidemiology, Parasites and Vectors, Agricultural Research Council-Onderstepoort Veterinary Research 100 Soutpan Road Private Bag X05 Onderstepoort 0110 South Africa
| | - Montse Rodriguez
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Vienna International Centre P.O. Box 100 1400 Vienna Austria
| | - Fernando C. Mulandane
- University Eduardo Mondlane, Centro de Biotecnologia Av. de Moçambique Km 1.5 Maputo Mozambique
| | - Hermógenes N. Mucache
- University Eduardo Mondlane, Centro de Biotecnologia Av. de Moçambique Km 1.5 Maputo Mozambique
| | - Luis Neves
- University Eduardo Mondlane, Centro de Biotecnologia Av. de Moçambique Km 1.5 Maputo Mozambique
- University of Pretoria, Department of Veterinary Tropical Diseases Private Bag X04 Onderstepoort 0110 South Africa
| | - Chantel De Beer
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Vienna International Centre P.O. Box 100 1400 Vienna Austria
| | - Sophie Ravel
- University of Montpellier, Cirad, IRD, Intertryp Campus International de Baillarguet 34398 Montpellier Cedex 5 France
| | - Thierry De Meeûs
- University of Montpellier, Cirad, IRD, Intertryp Campus International de Baillarguet 34398 Montpellier Cedex 5 France
| | - Robert L. Mach
- Institute of Chemical, Environmental, and Bioscience Engineering, Vienna University of Technology Gumpendorfer Straße 1a 1060 Vienna Austria
| | - Marc J. B. Vreysen
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Vienna International Centre P.O. Box 100 1400 Vienna Austria
| | - Adly M.M. Abd-Alla
- Insect Pest Control Laboratory, Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, Vienna International Centre P.O. Box 100 1400 Vienna Austria
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L. G. S. L, Wickramasinghe S, P. A. B. D. A, Abbas K, Hussain T, Ramasamy S, Manomohan V, Tapsoba ASR, Pichler R, Babar ME, Periasamy K. Indigenous cattle of Sri Lanka: Genetic and phylogeographic relationship with Zebu of Indus Valley and South Indian origin. PLoS One 2023; 18:e0282761. [PMID: 37585485 PMCID: PMC10431622 DOI: 10.1371/journal.pone.0282761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 07/30/2023] [Indexed: 08/18/2023] Open
Abstract
The present study reports the population structure, genetic admixture and phylogeography of cattle breeds of Sri Lanka viz. Batu Harak, Thawalam and White cattle. Moderately high level of genetic diversity was observed in all the three Sri Lankan zebu cattle breeds. Estimates of inbreeding for Thawalam and White cattle breeds were relatively high with 6.1% and 7.2% respectively. Genetic differentiation of Sri Lankan Zebu (Batu Harak and White cattle) was lowest with Red Sindhi among Indus Valley Zebu while it was lowest with Hallikar among the South Indian cattle. Global F statistics showed 6.5% differences among all the investigated Zebu cattle breeds and 1.9% differences among Sri Lankan Zebu breeds. The Sri Lankan Zebu cattle breeds showed strong genetic relationships with Hallikar cattle, an ancient breed considered to be ancestor for most of the Mysore type draught cattle breeds of South India. Genetic admixture analysis revealed high levels of breed purity in Lanka White cattle with >97% Zebu ancestry. However, significant taurine admixture was observed in Batu Harak and Thawalam cattle. Two major Zebu haplogroups, I1 and I2 were observed in Sri Lankan Zebu with the former predominating the later in all the three breeds. A total of 112 haplotypes were observed in the studied breeds, of which 50 haplotypes were found in Sri Lankan Zebu cattle. Mismatch analysis revealed unimodal distribution in all the three breeds indicating population expansion. The sum of squared deviations (SSD) and raggedness index were non-significant in both the lineages of all the three breeds except for I1 lineage of Thawalam cattle (P<0.01) and I2 lineage of Batu Harak cattle (P<0.05). The results of neutrality tests revealed negative Tajima's D values for both the lineages of Batu Harak (P>0.05) and White cattle (P>0.05) indicating an excess of low frequency polymorphisms and demographic expansion. Genetic dilution of native Zebu cattle germplasm observed in the study is a cause for concern. Hence, it is imperative that national breeding organizations consider establishing conservation units for the three native cattle breeds to maintain breed purity and initiate genetic improvement programs.
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Affiliation(s)
- Lokugalappatti L. G. S.
- Animal Production and Health Section, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna, Austria
- Faculty of Veterinary Medicine and Animal Science, University of Peradeniya, Peradeniya, Sri Lanka
| | - Saumya Wickramasinghe
- Faculty of Veterinary Medicine and Animal Science, University of Peradeniya, Peradeniya, Sri Lanka
| | - Alexander P. A. B. D.
- Faculty of Veterinary Medicine and Animal Science, University of Peradeniya, Peradeniya, Sri Lanka
| | - Kamran Abbas
- Animal Production and Health Section, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna, Austria
- Department of Molecular Biology, Virtual University of Pakistan, Lahore, Pakistan
| | - Tanveer Hussain
- Department of Molecular Biology, Virtual University of Pakistan, Lahore, Pakistan
| | - Saravanan Ramasamy
- Department of Animal Genetics and Breeding, Veterinary College and Research Institute, Namakkal, Tamil Nadu Veterinary and Animal Sciences University, Chennai, India
| | - Vandana Manomohan
- Animal Production and Health Section, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna, Austria
- Department of Animal Genetics and Breeding, Veterinary College and Research Institute, Namakkal, Tamil Nadu Veterinary and Animal Sciences University, Chennai, India
| | - Arnaud Stephane R. Tapsoba
- Animal Production and Health Section, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna, Austria
- Laboratoire de Biologie et de Santé Animale (LaBioSA), Institut de l’Environnement et de Recherches Agricoles (INERA), Ouagadougou, Burkina Faso
| | - Rudolf Pichler
- Animal Production and Health Section, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna, Austria
| | - Masroor E. Babar
- Department of Animal Sciences, The University of Agriculture, Dera Ismail Khan, Khyber Pakhtunkhwa, Pakistan
| | - Kathiravan Periasamy
- Animal Production and Health Section, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna, Austria
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Ortega-Sánchez C, Pérez-Díaz M, Melgarejo-Ramírez Y, Chopin-Doroteo M, Silva-Bermudez P, Martínez-López V, Zacaula-Juárez N, Zamudio-Cuevas Y, Hernández-Valencia C, López-Jácome LE, Carlos-Martínez A, Reyes-Medina N, Tamez-Pedroza L, Martínez-Pardo ME, Reyes-Frías MDL, Lecona H, Baeza I, Martinez-Gutierrez F, Márquez-Gutiérrez E, Martínez-Castañon G, Sánchez-Sánchez R. Radiosterilized Pig Skin, Silver Nanoparticles and Skin Cells as an Integral Dressing Treatment for Burns: Development, Pre-Clinical and Clinical Pilot Study. Pharmaceutics 2023; 15:2105. [PMID: 37631319 PMCID: PMC10458621 DOI: 10.3390/pharmaceutics15082105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 07/31/2023] [Accepted: 08/04/2023] [Indexed: 08/27/2023] Open
Abstract
Radiosterilized pig skin (RPS) has been used as a dressing for burns since the 1980s. Its similarity to human skin in terms of the extracellular matrix (ECM) allows the attachment of mesenchymal stem cells, making it ideal as a scaffold to create cellularized constructs. The use of silver nanoparticles (AgNPs) has been proven to be an appropriate alternative to the use of antibiotics and a potential solution against multidrug-resistant bacteria. RPS can be impregnated with AgNPs to develop nanomaterials capable of preventing wound infections. The main goal of this study was to assess the use of RPS as a scaffold for autologous fibroblasts (Fb), keratinocytes (Kc), and mesenchymal stem cells (MSC) in the treatment of second-degree burns (SDB). Additionally, independent RPS samples were impregnated with AgNPs to enhance their properties and further develop an antibacterial dressing that was initially tested using a burn mouse model. This protocol was approved by the Research and Ethics Committee of the INRLGII (INR 20/19 AC). Transmission electron microscopy (TEM) and dynamic light scattering (DLS) analysis of the synthesized AgNPs showed an average size of 10 nm and rounded morphology. Minimum inhibitory concentrations (MIC) and Kirby-Bauer assays indicated that AgNPs (in solution at a concentration of 125 ppm) exhibit antimicrobial activity against the planktonic form of S. aureus isolated from burned patients; moreover, a log reduction of 1.74 ± 0.24 was achieved against biofilm formation. The nanomaterial developed with RPS impregnated with AgNPs solution at 125 ppm (RPS-AgNPs125) facilitated wound healing in a burn mouse model and enhanced extracellular matrix (ECM) deposition, as analyzed by Masson's staining in histological samples. No silver was detected by energy-dispersive X-ray spectroscopy (EDS) in the skin, and neither by Inductively Coupled Plasma Mass Spectrometry (ICP-MS) in different organs of the mouse burn model. Calcein/ethidium homodimer (EthD-1), 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT), and scanning electron microscopy (SEM) analysis demonstrated that Fb, Kc, and MSC could attach to RPS with over 95% cell viability. Kc were capable of releasing FGF at 0.5 pg above control levels, as analyzed by ELISA assays. An autologous RPS-Fb-Kc construct was implanted in a patient with SDB and compared to an autologous skin graft. The patient recovery was assessed seven days post-implantation, and the patient was followed up at one, two, and three months after the implantation, exhibiting favorable recovery compared to the gold standard, as measured by the cutometer. In conclusion, RPS effectively can be used as a scaffold for the culture of Fb, Kc, and MSC, facilitating the development of a cellularized construct that enhances wound healing in burn patients.
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Affiliation(s)
- Carmina Ortega-Sánchez
- Laboratorio de Biotecnología, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Mexico City 14389, Mexico; (C.O.-S.); (M.P.-D.); (Y.M.-R.); (N.Z.-J.)
| | - Mario Pérez-Díaz
- Laboratorio de Biotecnología, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Mexico City 14389, Mexico; (C.O.-S.); (M.P.-D.); (Y.M.-R.); (N.Z.-J.)
- Laboratorio de Biomembranas, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City 07738, Mexico;
| | - Yaaziel Melgarejo-Ramírez
- Laboratorio de Biotecnología, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Mexico City 14389, Mexico; (C.O.-S.); (M.P.-D.); (Y.M.-R.); (N.Z.-J.)
| | - Mario Chopin-Doroteo
- Laboratorio de Tejido Conjuntivo, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Mexico City 14389, Mexico;
| | - Phaedra Silva-Bermudez
- Unidad de Ingeniería de Tejidos Terapia Celular y Medicina Regenerativa, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Mexico City 14389, Mexico; (P.S.-B.); (V.M.-L.)
| | - Valentín Martínez-López
- Unidad de Ingeniería de Tejidos Terapia Celular y Medicina Regenerativa, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Mexico City 14389, Mexico; (P.S.-B.); (V.M.-L.)
| | - Noé Zacaula-Juárez
- Laboratorio de Biotecnología, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Mexico City 14389, Mexico; (C.O.-S.); (M.P.-D.); (Y.M.-R.); (N.Z.-J.)
| | - Yessica Zamudio-Cuevas
- Laboratorio de Líquido Sinovial, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Mexico City 14389, Mexico;
| | - Carmen Hernández-Valencia
- Departamento de Alimentos y Biotecnología, Facultad de Química, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico;
| | - Luis Esaú López-Jácome
- Laboratorio de Infectología, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Mexico City 14389, Mexico;
| | - Alberto Carlos-Martínez
- Laboratorio de Microscopía Electrónica, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Mexico City 14389, Mexico; (A.C.-M.); (N.R.-M.)
| | - Naxieli Reyes-Medina
- Laboratorio de Microscopía Electrónica, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Mexico City 14389, Mexico; (A.C.-M.); (N.R.-M.)
| | - Luis Tamez-Pedroza
- Cirugía Plástica, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Mexico City 14389, Mexico;
| | - María Esther Martínez-Pardo
- Banco de Tejidos Radioesterilizados, Instituto Nacional de Investigaciones Nucleares, Ocoyoacac 52045, Mexico; (M.E.M.-P.); (M.d.L.R.-F.)
| | - María de Lourdes Reyes-Frías
- Banco de Tejidos Radioesterilizados, Instituto Nacional de Investigaciones Nucleares, Ocoyoacac 52045, Mexico; (M.E.M.-P.); (M.d.L.R.-F.)
| | - Hugo Lecona
- Bioterio, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Mexico City 14389, Mexico;
| | - Isabel Baeza
- Laboratorio de Biomembranas, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City 07738, Mexico;
| | - Fidel Martinez-Gutierrez
- Laboratorio de Antimicrobianos, Biopelículas y Microbiota, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78210, Mexico;
- Centro de Investigación en Ciencias de la Salud y Biomedicina, Universidad Autonoma de San Luis Potosi, San Luis Potosi 78210, Mexico
| | - Erik Márquez-Gutiérrez
- Cirugía Plástica, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Mexico City 14389, Mexico;
| | | | - Roberto Sánchez-Sánchez
- Unidad de Ingeniería de Tejidos Terapia Celular y Medicina Regenerativa, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Mexico City 14389, Mexico; (P.S.-B.); (V.M.-L.)
- Escuela de Ingeniería y Ciencias, Tecnológico de Monterrey, Mexico City 64849, Mexico
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de Freitas LVP, da Mota Júnior CAA, Damaceno MA, Silveira JGF, Portela ACV, Campanharo SC, da Silva AFB, Assane IM, Pilarski F, Sasanya JJ, Paschoal JAR. Residue Depletion Profile and Estimation of Withdrawal Period for Sulfadimethoxine and Ormetoprim in Edible Tissues of Nile Tilapia ( Oreochromis sp.) on Medicated Feed. Animals (Basel) 2023; 13:2499. [PMID: 37570313 PMCID: PMC10417122 DOI: 10.3390/ani13152499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/10/2023] [Accepted: 08/01/2023] [Indexed: 08/13/2023] Open
Abstract
Sulfadimethoxine (SDM) and ormetoprim (OMP) are antimicrobials used in combination to treat bacterial infections in fish farming. The use of this drug combination is not yet regulated in some countries, such as Brazil. Due to the lack of regulated drugs for aquaculture in Brazil, this study investigated the residue depletion profile of SDM and OMP in Nile tilapia (Oreochromis sp.) after oral administration. Fish were treated with medicated feed containing a 5:1 ratio of SDM:OMP at the dose of 50 mg kg BW-1 for five consecutive days with an average water temperature of 28 °C. The drugs were incorporated into the feed by using a gelatin coating process which promoted homogeneity in drug concentration and prevented the drug leaching into the water during medication. The SDM and OMP determination in fish fillets (muscle plus skin in natural proportions) was performed using the QuEChERS approach followed by LC-MS/MS quantification. The analytical method was validated according to Brazilian and selected international guidelines. A withdrawal period of 9 days (or 252 °C days) was estimated for the sum of SDM and OMP residues at concentration levels below the maximum residue level of 100 µg kg-1.
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Affiliation(s)
- Lucas Victor Pereira de Freitas
- Department of Biomolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo (USP), Ribeirao Preto 14040-900, SP, Brazil
| | - Carlos Augusto Alvarenga da Mota Júnior
- Department of Biomolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo (USP), Ribeirao Preto 14040-900, SP, Brazil
| | - Marina Alves Damaceno
- Department of Biomolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo (USP), Ribeirao Preto 14040-900, SP, Brazil
| | - Juliana Grell Fernandes Silveira
- Department of Biomolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo (USP), Ribeirao Preto 14040-900, SP, Brazil
| | - Ana Carolina Vellosa Portela
- Department of Biomolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo (USP), Ribeirao Preto 14040-900, SP, Brazil
| | - Sarah Chagas Campanharo
- Department of Biomolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo (USP), Ribeirao Preto 14040-900, SP, Brazil
| | - Agnaldo Fernando Baldo da Silva
- Department of Biomolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo (USP), Ribeirao Preto 14040-900, SP, Brazil
| | - Inácio Mateus Assane
- Laboratory of Microbiology and Parasitology of Aquatic Organisms, Aquaculture Center of Unesp, Sao Paulo State University (Unesp), Jaboticabal 14884-900, SP, Brazil
| | - Fabiana Pilarski
- Laboratory of Microbiology and Parasitology of Aquatic Organisms, Aquaculture Center of Unesp, Sao Paulo State University (Unesp), Jaboticabal 14884-900, SP, Brazil
| | | | - Jonas Augusto Rizzato Paschoal
- Department of Biomolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo (USP), Ribeirao Preto 14040-900, SP, Brazil
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Fan H, He P, Xu S, Li S, Wang Y, Zhang W, Li X, Shang H, Zeng L, Zheng SJ. Banana disease-suppressive soil drives Bacillus assembled to defense Fusarium wilt of banana. Front Microbiol 2023; 14:1211301. [PMID: 37601384 PMCID: PMC10437119 DOI: 10.3389/fmicb.2023.1211301] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 07/13/2023] [Indexed: 08/22/2023] Open
Abstract
Fusarium wilt of banana (FWB) caused by Fusarium oxysporum f. sp. cubense tropical race 4 (Foc TR4), poses a serious problem for sustainable banana production. Biological control is one of the effective measures to control this destructive disease. High-throughput sequencing of soil microorganisms could significantly improve the efficiency and accuracy of biocontrol strain screening. In this study, the soil microbial diversity of six main banana-producing areas in Yunnan was sequenced by Illumina Miseq platform. The outcome of this study showed the genus of Chujaibacter, Bacillus, and Sphingomonas were significantly enriched in microorganism community composition. Further correlation analysis with soil pathogen (Foc TR4) content showed that Bacillus was significantly negatively correlated with pathogen content. Therefore, we isolated and identified Bacillus from the disease-suppressive soils, and obtained a B. velezensis strain YN1910. In vitro and pot experiments showed that YN1910 had a significant control effect (78.43-81.76%) on banana Fusarium wilt and had a significant growth promotion effect on banana plants.
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Affiliation(s)
- Huacai Fan
- Yunnan Key Laboratory of Green and Control of Agricultural Transboundary Pests, Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming, China
| | - Ping He
- Yunnan Key Laboratory of Green and Control of Agricultural Transboundary Pests, Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming, China
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Ministry of Education Key Laboratory of Agriculture Biodiversity for Plant Disease Management, College of Plant Protection, Yunnan Agricultural University, Kunming, China
| | - Shengtao Xu
- Yunnan Key Laboratory of Green and Control of Agricultural Transboundary Pests, Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming, China
| | - Shu Li
- Yunnan Key Laboratory of Green and Control of Agricultural Transboundary Pests, Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming, China
| | - Yongfen Wang
- Yunnan Key Laboratory of Green and Control of Agricultural Transboundary Pests, Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming, China
- Institute of Tropical and Subtropical Industry Crops, Yunnan Academy of Agricultural Sciences, Baoshan, China
| | - Wenlong Zhang
- Yunnan Key Laboratory of Green and Control of Agricultural Transboundary Pests, Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming, China
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Ministry of Education Key Laboratory of Agriculture Biodiversity for Plant Disease Management, College of Plant Protection, Yunnan Agricultural University, Kunming, China
| | - Xundong Li
- Yunnan Key Laboratory of Green and Control of Agricultural Transboundary Pests, Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming, China
| | - Hui Shang
- Yunnan Key Laboratory of Green and Control of Agricultural Transboundary Pests, Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming, China
| | - Li Zeng
- Yunnan Key Laboratory of Green and Control of Agricultural Transboundary Pests, Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming, China
| | - Si-Jun Zheng
- Yunnan Key Laboratory of Green and Control of Agricultural Transboundary Pests, Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming, China
- Bioversity International, Kunming, China
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Angmo N, Sengupta M, Vimal N, Seth RK. Receptivity and Remating Propensity in Female Spodoptera litura (Fabricius) after Mating with an Irradiated Male or Its F 1 Male Progeny. Insects 2023; 14:651. [PMID: 37504657 PMCID: PMC10380408 DOI: 10.3390/insects14070651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/06/2023] [Accepted: 07/06/2023] [Indexed: 07/29/2023]
Abstract
The 'Inherited or F1 sterility technique' (IS), using sub-sterilized male moths, is a widely proposed pest management tool for Lepidoptera pests in general, and the tobacco cutworm Spodoptera litura (Fabr.) in particular. However, the multiple mating tendency of female moths and the ejaculate quality of male moths might influence the efficiency of this technique. Reduced ejaculate quality was observed in irradiated males, as evidenced by radiation's impact on certain bio-parameters, such as the weight of the spermatophores and their protein content, sperm count, the molecular expression of the sex peptide receptor (SPR) and egg fertility, with a greater impact in F1 male progeny. During the remating of females with untreated males, irrespective of the irradiation status of the first male, there was an increase in calling behavior, remating propensity and fertility in females, with a larger time gap between consecutive matings. The ability of F1 male progeny to check remating propensity in females 24 h after the initial mating was lower than that of unirradiated males. Partially sterile (130 Gy) males were as successful as unirradiated males in inducing the level of mating refractoriness in females. Decreased ejaculate quality in F1 male progeny could be associated with increased female receptivity during remating. Understanding the influence of male moth irradiation, insemination quality and post (initial)-mating intervals on the remating behavior of normal female moths and induced sterility might help in simulation modeling and optimizing IS insect programs.
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Affiliation(s)
- Nilza Angmo
- Applied Entomology and Radiation Biology Lab, Department of Zoology, University of Delhi, Delhi 110007, India
| | - Madhumita Sengupta
- Applied Entomology and Radiation Biology Lab, Department of Zoology, University of Delhi, Delhi 110007, India
| | - Neha Vimal
- Applied Entomology and Radiation Biology Lab, Department of Zoology, University of Delhi, Delhi 110007, India
| | - Rakesh Kumar Seth
- Applied Entomology and Radiation Biology Lab, Department of Zoology, University of Delhi, Delhi 110007, India
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Parmanbek N, Aimanova NA, Mashentseva AA, Barsbay M, Abuova FU, Nurpeisova DT, Jakupova ZY, Zdorovets MV. e-Beam and γ-rays Induced Synthesis and Catalytic Properties of Copper Nanoclusters-Deposited Composite Track-Etched Membranes. Membranes (Basel) 2023; 13:659. [PMID: 37505025 PMCID: PMC10385425 DOI: 10.3390/membranes13070659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/25/2023] [Accepted: 07/05/2023] [Indexed: 07/29/2023]
Abstract
Effective removal of toxic inorganic and organic pollutants is one of the current leading challenges of wastewater treatment. In this study, the decomposition of methylene blue (MB) under UV light irradiation was investigated in the presence of copper nanoclusters (NCs)-deposited polyethylene terephthalate (PET) track-etched hybrid membranes. PET track-etched membranes (TeMs) with an average pore size of ~400 nm were grafted by functional acrylic acid (AA) monomer under electron beam irradiation after oxidation with H2O2/UV system. The radiation dose varied between 46 and 200 kGy. For the deposition of copper NCs, poly(acrylic acid) (PAA)-grafted membranes saturated with Cu(II) ions were irradiated either by electron beam or γ-rays to obtain copper-based NCs for the catalytic degradation of MB. Irradiation to 100 kGy with accelerated electrons resulted in the formation of small and uniform copper hydroxide (Cu(OH)2) nanoparticles homogeneously distributed over the entire volume of the template. On the other hand, irradiation under γ-rays yielded composites with copper NCs with a high degree of crystallinity. However, the size of the deposited NCs obtained by γ-irradiation was not uniform. Nanoparticles with the highest uniformity were obtained at 150 kGy dose. Detailed analysis by X-ray diffraction (XRD) and scanning electron microscopy (SEM) confirmed the loading of copper nanoparticles with an average size of 100 nm on the inner walls of nanochannels and on the surface of PET TeMs. Under UV light irradiation, composite membranes loaded with NCs exhibited high photocatalytic activity. It was determined that the highest catalytic activity was observed in the presence of Cu(OH)2@PET-g-PAA membrane obtained at 250 kGy. More than 91.9% of the initial dye was degraded when this hybrid membrane was employed for 180 min, while only 83.9% of MB was degraded under UV light using Cu@PET-g-PAA membrane. Cu(OH)2@PET-g-PAA membranes obtained under electron beam irradiation demonstrated a higher photocatalytic activity compared to Cu@PET-g-PAA membranes attained by γ-rays.
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Affiliation(s)
- Nursanat Parmanbek
- The Institute of Nuclear Physics of the Republic of Kazakhstan, Almaty 050032, Kazakhstan
- Department of Chemistry, L.N. Gumilyov Eurasian National University, Astana 010008, Kazakhstan
| | - Nurgulim A Aimanova
- The Institute of Nuclear Physics of the Republic of Kazakhstan, Almaty 050032, Kazakhstan
| | - Anastassiya A Mashentseva
- The Institute of Nuclear Physics of the Republic of Kazakhstan, Almaty 050032, Kazakhstan
- Department of Nuclear Physics, New Materials and Technologies, L.N. Gumilyov Eurasian National University, Astana 010008, Kazakhstan
| | - Murat Barsbay
- Department of Chemistry, Hacettepe University, Ankara 06800, Turkey
| | - Fatima U Abuova
- Department of Nuclear Physics, New Materials and Technologies, L.N. Gumilyov Eurasian National University, Astana 010008, Kazakhstan
| | - Dinara T Nurpeisova
- Department of Chemistry, L.N. Gumilyov Eurasian National University, Astana 010008, Kazakhstan
| | - Zhanar Ye Jakupova
- Department of Chemistry, L.N. Gumilyov Eurasian National University, Astana 010008, Kazakhstan
| | - Maxim V Zdorovets
- The Institute of Nuclear Physics of the Republic of Kazakhstan, Almaty 050032, Kazakhstan
- Department of Intelligent Information Technologies, The Ural Federal University, 620002 Yekaterinburg, Russia
- Engineering Profile Laboratory, L.N. Gumilyov Eurasian National University, Astana 010008, Kazakhstan
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Parmanbek N, Sütekin SD, Barsbay M, Aimanova NA, Mashentseva AA, Alimkhanova AN, Zhumabayev AM, Yanevich A, Almanov AA, Zdorovets MV. Environmentally friendly loading of palladium nanoparticles on nanoporous PET track-etched membranes grafted by poly(1-vinyl-2-pyrrolidone) via RAFT polymerization for the photocatalytic degradation of metronidazole. RSC Adv 2023; 13:18700-18714. [PMID: 37346955 PMCID: PMC10281340 DOI: 10.1039/d3ra03226d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 06/14/2023] [Indexed: 06/23/2023] Open
Abstract
Nanoporous track-etched membranes (TeMs) are highly versatile materials that have shown promise in various applications such as filtration, separation, adsorption, and catalysis due to their mechanical integrity and high surface area. The performance of TeMs as catalysts for removing toxic pollutants is greatly influenced by the pore diameter, density, and functionalization of the nanochannels. In this study, the synthesis of functionalized poly(ethylene terephthalate) (PET) TeMs with Pd nanoparticles (NPs) as catalysts for the photodegradation of the antibiotic metronidazole (MTZ) was methodically investigated and their catalytic activity under UV irradiation was compared. Before loading of the Pd NPs, the surface and nanopore walls of the PET TeMs were grafted by poly(1-vinyl-2-pyrrolidone) (PVP) via UV-initiated reversible addition fragmentation chain transfer (RAFT)-mediated graft copolymerization. The use of RAFT polymerization allowed for precise control over the degree of grafting and graft lengths within the nanochannels of PVP grafted PET TeMs (PVP-g-PET). Pd NPs were then loaded onto PVP-g-PET using several environmentally friendly reducing agents such as ascorbic acid, sodium borohydride and a plant extract. In addition, a conventional thermal reduction technique was also applied for the reduction of the Pd NPs. The grafting process created a surface with high-sorption capacity for MTZ and also high stabilizing effect for Pd NPs due to the functional PVP chains on the PET substrate. The structure and composition of the composite membranes were elucidated by scanning electron microscopy (SEM), X-ray diffraction (XRD) analysis, thermogravimetry, contact angle measurements and energy dispersive X-ray (EDX), X-ray photoelectron (XPS) and Fourier transform infra-red (FTIR) spectroscopies. The effects of different types of reducing agents, pH, the amount of loaded catalyst and MTZ concentration on the MTZ catalytic degradation efficiency of the obtained composites were investigated. The efficiency of the catalyst prepared in the presence of ascorbic acid was superior to the others (89.86% removal at 30 mg L-1 of MTZ). Maximum removal of MTZ was observed at the natural pH (6.5) of the MTZ solution at a concentration of 30 mg per L MTZ. The removal efficiency was decreased by increasing the catalyst dosage and the initial MTZ concentration. The reaction rate constant was reduced from 0.0144 to 0.0096 min-1 by increasing the MTZ concentration from 20 to 50 mg L-1. The photocatalyst revealed remarkable photocatalytic activity even after 10 consecutive cycles.
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Affiliation(s)
- Nursanat Parmanbek
- The Institute of Nuclear Physics of the Republic of Kazakhstan 050032 Almaty Kazakhstan
- Department of Chemistry, L.N. Gumilyov Eurasian National University 010008 Astana Kazakhstan
| | - S Duygu Sütekin
- Department of Chemistry, Hacettepe University 06800 Ankara Turkey
- Polymer Science and Technology Division, Institute of Science, Hacettepe University Beytepe 06800 Ankara Turkey
| | - Murat Barsbay
- Department of Chemistry, Hacettepe University 06800 Ankara Turkey
- Polymer Science and Technology Division, Institute of Science, Hacettepe University Beytepe 06800 Ankara Turkey
| | - Nurgulim A Aimanova
- The Institute of Nuclear Physics of the Republic of Kazakhstan 050032 Almaty Kazakhstan
| | - Anastassiya A Mashentseva
- The Institute of Nuclear Physics of the Republic of Kazakhstan 050032 Almaty Kazakhstan
- Department of Nuclear Physics, New Materials and Technologies, L.N. Gumilyov Eurasian National University 010008 Astana Kazakhstan
| | - Assel N Alimkhanova
- The Institute of Nuclear Physics of the Republic of Kazakhstan 050032 Almaty Kazakhstan
- Department of Nuclear Physics, New Materials and Technologies, L.N. Gumilyov Eurasian National University 010008 Astana Kazakhstan
| | - Alisher M Zhumabayev
- The Institute of Nuclear Physics of the Republic of Kazakhstan 050032 Almaty Kazakhstan
- Department of Nuclear Physics, New Materials and Technologies, L.N. Gumilyov Eurasian National University 010008 Astana Kazakhstan
| | - Alyona Yanevich
- The Institute of Nuclear Physics of the Republic of Kazakhstan 050032 Almaty Kazakhstan
| | - Alimzhan A Almanov
- The Institute of Nuclear Physics of the Republic of Kazakhstan 050032 Almaty Kazakhstan
- Department of Nuclear Physics, New Materials and Technologies, L.N. Gumilyov Eurasian National University 010008 Astana Kazakhstan
| | - Maxim V Zdorovets
- The Institute of Nuclear Physics of the Republic of Kazakhstan 050032 Almaty Kazakhstan
- Engineering Profile Laboratory, L.N. Gumilyov Eurasian National University 010008 Astana Kazakhstan
- Department of Intelligent Information Technologies, The Ural Federal University 620002 Yekaterinburg Russia
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Lei D, Cao L, Zhong T, He QY, Sun X. Residue Lys219 of CpxR is critical in the regulation of the antibiotic resistance of Escherichia coli. J Antimicrob Chemother 2023:7192097. [PMID: 37288948 DOI: 10.1093/jac/dkad171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 05/14/2023] [Indexed: 06/09/2023] Open
Abstract
BACKGROUND CpxR is a critical regulator in bacterial adaptation to various harmful stresses, and is known to regulate bacterial resistance to commonly used antibiotics, such as aminoglycosides, β-lactams and polypeptides. However, the detailed study of functional residues of CpxR remains insufficient. OBJECTIVES To investigate the contribution of Lys219 to CpxR's function in regulating antibiotic resistance of Escherichia coli. METHODS We performed sequence alignment and conservative analysis of the CpxR protein and constructed mutant strains. We then performed electrophoretic mobility shift assay, real-time quantitative PCR assay, determination of reactive oxygen species (ROS) levels, molecular dynamics simulation, conformational analysis and circular dichroism. RESULTS All mutant proteins (K219Q, K219A and K219R) lost the cpxP DNA-binding ability. Additionally, the three complemented strains eK219A, eK219Q, and eK219R exhibited lower resistance to copper toxicity and alkaline pH toxicity than eWT. Molecular dynamics analysis revealed that mutation of Lys219 leads to looser and more unstable conformation of CpxR, leading to its decreased binding affinity with downstream genes. Moreover, the Lys219 mutation resulted in the down-regulation of efflux pump genes (acrD, tolC, mdtB and mdtA), leading to the accumulation of antibiotics inside the cells and an increase in ROS production, which significantly reduces antibiotic resistance. CONCLUSIONS The mutation of the key residue Lys219 causes a conformational change that results in the loss of regulatory ability of CpxR, which may potentially reduce to antibiotic resistance. Therefore, this study suggests that targeting the highly conserved sequence of CpxR could be a promising strategy for the development of new antibacterial drugs.
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Affiliation(s)
- Dan Lei
- 1MOE Key Laboratory of Tumor Molecular Biology and Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, Institute of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Linlin Cao
- 1MOE Key Laboratory of Tumor Molecular Biology and Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, Institute of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Tairan Zhong
- 1MOE Key Laboratory of Tumor Molecular Biology and Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, Institute of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Qing-Yu He
- 1MOE Key Laboratory of Tumor Molecular Biology and Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, Institute of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou, China
| | - Xuesong Sun
- 1MOE Key Laboratory of Tumor Molecular Biology and Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, Institute of Life and Health Engineering, College of Life Science and Technology, Jinan University, Guangzhou, China
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Roselli G, Anfora G, Suckling DM, Mazzoni V, Vanoni V, Menegotti L, Fellin L, Rossi Stacconi MV, Ioriatti C, Cristofaro M. Effects of Irradiation on Biology and Mating Behaviour of Wild Males of Brown Marmorated Stink Bug Using a 6 MV Medical Linear Accelerator. Insects 2023; 14:insects14050460. [PMID: 37233089 DOI: 10.3390/insects14050460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 04/30/2023] [Accepted: 05/08/2023] [Indexed: 05/27/2023]
Abstract
The brown marmorated stink bug, Halyomorpha halys, is a pentatomid bug of Eastern Asian origin that became an economically relevant pest in the Eurasian and American continents. Management of this species is limited to use of chemical insecticides: an inefficient method due to the strong adaptability of the target pest. The sterile insect technique (SIT) is potentially a valid tactic in the search for nontoxic alternatives. In this work, we investigated the suitability of mass-trapped overwintering males, collected during the aggregation phase before the winter diapause, for their release as competitive sterile males in an SIT programme. Differently from previous studies, irradiation was applied with a linear accelerator device that produced high-energy photons. Following a similar scientific protocol with newly emerged irradiated males, the effects of X-ray irradiation on physiological parameters (longevity, fecundity and fertility) were assessed. In addition, behavioural bioassays were carried out in no-choice conditions to evaluate if irradiation interferes with mating processes. The results are very encouraging; the effects of the irradiation at 32 Gy did not differ from the controls in the longevity or fecundity of the exposed overwintering adults. The hatching rate of the eggs laid by the fertile females that had mated with the irradiated males was less than 5%. The results of behavioural bioassays showed that the irradiation did not cause a significant impact on the quality of the sterile males. More research is warranted to evaluate the mating competitiveness of sterile males in semi-field and field conditions.
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Affiliation(s)
- Gerardo Roselli
- Center Agriculture, Food and Environment (C3A), University of Trento, 38098 San Michele all'Adige, Italy
- Technology Transfer Centre, Fondazione Edmund Mach, 38098 San Michele all'Adige, Italy
- Biotechnology and Biological Control Agency (BBCA Onlus), 00123 Rome, Italy
| | - Gianfranco Anfora
- Center Agriculture, Food and Environment (C3A), University of Trento, 38098 San Michele all'Adige, Italy
| | - David Maxwell Suckling
- Technology Transfer Centre, Fondazione Edmund Mach, 38098 San Michele all'Adige, Italy
- Formerly The New Zealand Institute for Plant and Food Research Ltd., Christchurch 8011, New Zealand
- Formerly School of Biological Sciences, University of Auckland, Auckland 1072, New Zealand
| | - Valerio Mazzoni
- Research and Innovation Centre, Fondazione Edmund Mach, 38098 San Michele all'Adige, Italy
| | | | - Loris Menegotti
- Azienda Provinciale per i Servizi Sanitari, 38122 Trento, Italy
| | - Lorenzo Fellin
- Center Agriculture, Food and Environment (C3A), University of Trento, 38098 San Michele all'Adige, Italy
- Research and Innovation Centre, Fondazione Edmund Mach, 38098 San Michele all'Adige, Italy
| | | | - Claudio Ioriatti
- Technology Transfer Centre, Fondazione Edmund Mach, 38098 San Michele all'Adige, Italy
| | - Massimo Cristofaro
- Biotechnology and Biological Control Agency (BBCA Onlus), 00123 Rome, Italy
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Wadood SA, Jiang Y, Nie J, Li C, Rogers KM, Liu H, Zhang Y, Zhang W, Yuan Y. Effects of Light Shading, Fertilization, and Cultivar Type on the Stable Isotope Distribution of Hybrid Rice. Foods 2023; 12:foods12091832. [PMID: 37174370 PMCID: PMC10178473 DOI: 10.3390/foods12091832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/10/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023] Open
Abstract
The effect of fertilizer supply and light intensity on the distribution of elemental contents (%C and %N) and light stable isotopes (C, N, H, and O) in different rice fractions (rice husk, brown rice, and polished rice) of two hybrid rice cultivars (maintainer lines You-1B and Zhong-9B) were investigated. Significant variations were observed for δ13C (-31.3 to -28.3‱), δ15N (2.4 to 2.7‱), δ2H (-125.7 to -84.7‱), and δ18O (15.1‱ to 23.7‱) values in different rice fractions among different cultivars. Fertilizer treatments showed a strong association with %N, δ15N, δ2H, and δ18O values while it did not impart any significant variation for the %C and δ13C values. Light intensity levels also showed a significant influence on the isotopic values of different rice fractions. The δ13C values showed a positive correlation with irradiance. The δ2H and δ15N values decreased with an increase in the irradiance. The light intensity levels did not show any significant change for δ18O values in rice fractions. Multivariate ANOVA showed a significant interaction effect of different factors (light intensity, fertilizer concentration, and rice variety) on the isotopic composition of rice fractions. It is concluded that all environmental and cultivation factors mentioned above significantly influenced the isotopic values and should be considered when addressing the authenticity and origin of rice. Furthermore, care should be taken when selecting rice fractions for traceability and authenticity studies since isotopic signatures vary considerably among different rice fractions.
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Affiliation(s)
- Syed Abdul Wadood
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Hangzhou 310021, China
- Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Key Laboratory of Information Traceability for Agricultural Products, Ministry of Agriculture and Rural Affairs of China, Hangzhou 310021, China
- Department of Food Science, University of Home Economics Lahore, Lahore 54700, Pakistan
| | - Yunzhu Jiang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Hangzhou 310021, China
- Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Key Laboratory of Information Traceability for Agricultural Products, Ministry of Agriculture and Rural Affairs of China, Hangzhou 310021, China
| | - Jing Nie
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Hangzhou 310021, China
- Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Key Laboratory of Information Traceability for Agricultural Products, Ministry of Agriculture and Rural Affairs of China, Hangzhou 310021, China
| | - Chunlin Li
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Hangzhou 310021, China
- Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Key Laboratory of Information Traceability for Agricultural Products, Ministry of Agriculture and Rural Affairs of China, Hangzhou 310021, China
| | - Karyne M Rogers
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Hangzhou 310021, China
- Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Key Laboratory of Information Traceability for Agricultural Products, Ministry of Agriculture and Rural Affairs of China, Hangzhou 310021, China
- National Isotope Centre, GNS Science, 30 Gracefield Road, Lower Hutt 5040, New Zealand
| | - Hongyan Liu
- Research Center for Plants and Human Health, Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu 610213, China
| | - Yongzhi Zhang
- Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Key Laboratory of Information Traceability for Agricultural Products, Ministry of Agriculture and Rural Affairs of China, Hangzhou 310021, China
| | - Weixing Zhang
- China National Rice Research Institute, Hangzhou 310006, China
| | - Yuwei Yuan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Hangzhou 310021, China
- Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Key Laboratory of Information Traceability for Agricultural Products, Ministry of Agriculture and Rural Affairs of China, Hangzhou 310021, China
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Carretas JM, Ferreira LM, Santos PMP, Gomes SS, Araújo MF, Maria L, Leal JP. Tentative Approaches for Extraction of Lanthanides from Wastewater with Low Metal Concentration. Membranes (Basel) 2023; 13:membranes13050467. [PMID: 37233528 DOI: 10.3390/membranes13050467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 04/19/2023] [Accepted: 04/24/2023] [Indexed: 05/27/2023]
Abstract
Lanthanides are critical elements, and their recovery from wastewater increases the availability of these elements and reduces their impacts on the environment. In this study, tentative approaches to extract lanthanides from low-concentration aqueous solutions were investigated. PVDF membranes soaked with different active compounds or synthesized chitosan-based membranes containing these active compounds were used. The membranes were immersed in 10-4 M of aqueous solutions of selected lanthanides, and their extraction efficiency was assessed using ICP-MS. The PVDF membranes showed quite poor results, with only the membrane with oxamate ionic liquid giving some positive results (0.75 mg of Yb, 3 mg of lanthanides per gram of membrane). However, the chitosan-based membranes led to very interesting results, with the maximum concentration factor for the final solution relative to the initial solution being 13 times higher for Yb, which was obtained with the chitosan-sucrose-citric acid membrane. Several of the chitosan membranes, namely the one with 1-Butyl-3-methylimidazolium-di-(2-ethylhexyl)-oxamate, could extract around 10 mg of lanthanides per gram of membrane, with the better one being the membrane with sucrose/citric acid that achieved more than 18 mg/g of membrane. The use of chitosan for this purpose is a novelty. Since these membranes are easily prepared and have a very low cost, practical applications can be envisaged after further studies to better understand the underlying mechanism.
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Affiliation(s)
- José M Carretas
- Centro de Química Estrutural (CQE), Instituto Superior Técnico (IST), Universidade de Lisboa, Campus Tecnológico e Nuclear, EN 10, 2695-066 Bobadela, Portugal
- Departamento de Engenharia e Ciências Nucleares (DECN), Instituto Superior Técnico (IST), Universidade de Lisboa, Campus Tecnológico e Nuclear, EN 10, 2695-066 Bobadela, Portugal
| | - Luís M Ferreira
- Departamento de Engenharia e Ciências Nucleares (DECN), Instituto Superior Técnico (IST), Universidade de Lisboa, Campus Tecnológico e Nuclear, EN 10, 2695-066 Bobadela, Portugal
- Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico (IST), Universidade de Lisboa, Campus Tecnológico e Nuclear, EN 10, 2695-066 Bobadela, Portugal
| | - Pedro M P Santos
- Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico (IST), Universidade de Lisboa, Campus Tecnológico e Nuclear, EN 10, 2695-066 Bobadela, Portugal
| | - Susana S Gomes
- Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico (IST), Universidade de Lisboa, Campus Tecnológico e Nuclear, EN 10, 2695-066 Bobadela, Portugal
| | - Maria Fátima Araújo
- Departamento de Engenharia e Ciências Nucleares (DECN), Instituto Superior Técnico (IST), Universidade de Lisboa, Campus Tecnológico e Nuclear, EN 10, 2695-066 Bobadela, Portugal
- Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico (IST), Universidade de Lisboa, Campus Tecnológico e Nuclear, EN 10, 2695-066 Bobadela, Portugal
| | - Leonor Maria
- Centro de Química Estrutural (CQE), Instituto Superior Técnico (IST), Universidade de Lisboa, Campus Tecnológico e Nuclear, EN 10, 2695-066 Bobadela, Portugal
| | - João Paulo Leal
- Centro de Química Estrutural (CQE), Instituto Superior Técnico (IST), Universidade de Lisboa, Campus Tecnológico e Nuclear, EN 10, 2695-066 Bobadela, Portugal
- Departamento de Engenharia e Ciências Nucleares (DECN), Instituto Superior Técnico (IST), Universidade de Lisboa, Campus Tecnológico e Nuclear, EN 10, 2695-066 Bobadela, Portugal
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Leino AA, Jantunen VE, Mota-Santiago P, Kluth P, Djurabekova F. Insights into nanoparticle shape transformation by energetic ions. Sci Rep 2023; 13:6354. [PMID: 37072476 PMCID: PMC10113260 DOI: 10.1038/s41598-023-33152-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Accepted: 04/07/2023] [Indexed: 05/03/2023] Open
Abstract
Shape modification of embedded nanoparticles can be achieved by means of swift heavy ion irradiation. During irradiation, the particles elongate and align with the direction of the ion beam, presumably due to nanometer-scale phase transitions induced by individual ion impacts. However, the details of this transformation are not fully understood. The shape of metal nanoparticles embedded in dielectric matrices defines the non-linear optical properties of the composite material. Therefore, understanding the transformation process better is beneficial for producing materials with the desired optical properties. We study the elongation mechanism of gold nanoparticles using atomistic simulations. Here we focus on long-timescale processes and adhesion between the nanoparticle and the matrix. Without the necessity of ad-hoc assumptions used earlier, our simulations show that, due to adhesion with the oxide, the nanoparticles can grow in aspect ratio while in the molten state even after silicon dioxide solidifies. Moreover, they demonstrate the active role of the matrix: Only explicit simulations of ion impacts around the embedded nanoparticle provide the mechanism for continuous elongation up to experimental values of aspect ratio. Experimental transmission electron microscopy micrographs of nanoparticles after high-fluence irradiation support the simulations. The elongated nanoparticles in experiments and their interface structures with silica, as characterized by the micrographs, are consistent with the simulations. These findings bring ion beam technology forward as a precise tool for shaping embedded nanostructures for various optical applications.
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Affiliation(s)
- Aleksi A Leino
- Helsinki Institute of Physics and Department of Physics, University of Helsinki, P.O. Box 43, FI-00014, Helsinki, Finland.
| | - Ville E Jantunen
- Helsinki Institute of Physics and Department of Physics, University of Helsinki, P.O. Box 43, FI-00014, Helsinki, Finland
| | - Pablo Mota-Santiago
- MAX IV Laboratory, Lund University, P.O. Box 118, SE-22100, Lund, Sweden
- Department of Materials Physics, Research School of Physics, Australian National University, Canberra, ACT, 2601, Australia
| | - Patrick Kluth
- Department of Materials Physics, Research School of Physics, Australian National University, Canberra, ACT, 2601, Australia
| | - Flyura Djurabekova
- Helsinki Institute of Physics and Department of Physics, University of Helsinki, P.O. Box 43, FI-00014, Helsinki, Finland
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Durdik M, Markova E, Kosik P, Vigasova K, Gulati S, Jakl L, Vrobelova K, Fekete M, Zavacka I, Pobijakova M, Dolinska Z, Belyaev I. Assessment of Individual Radiosensitivity in Breast Cancer Patients Using a Combination of Biomolecular Markers. Biomedicines 2023; 11:biomedicines11041122. [PMID: 37189740 DOI: 10.3390/biomedicines11041122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/31/2023] [Accepted: 04/05/2023] [Indexed: 05/17/2023] Open
Abstract
About 5% of patients undergoing radiotherapy (RT) develop RT-related side effects. To assess individual radiosensitivity, we collected peripheral blood from breast cancer patients before, during and after the RT, and γH2AX/53BP1 foci, apoptosis, chromosomal aberrations (CAs) and micronuclei (MN) were analyzed and correlated with the healthy tissue side effects assessed by the RTOG/EORTC criteria. The results showed a significantly higher level of γH2AX/53BP1 foci before the RT in radiosensitive (RS) patients in comparison to normal responding patients (NOR). Analysis of apoptosis did not reveal any correlation with side effects. CA and MN assays displayed an increase in genomic instability during and after RT and a higher frequency of MN in the lymphocytes of RS patients. We also studied time kinetics of γH2AX/53BP1 foci and apoptosis after in vitro irradiation of lymphocytes. Higher levels of primary 53BP1 and co-localizing γH2AX/53BP1 foci were detected in cells from RS patients as compared to NOR patients, while no difference in the residual foci or apoptotic response was found. The data suggested impaired DNA damage response in cells from RS patients. We suggest γH2AX/53BP1 foci and MN as potential biomarkers of individual radiosensitivity, but they need to be evaluated with a larger cohort of patients for clinics.
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Affiliation(s)
- Matus Durdik
- Department of Radiobiology, Cancer Research Institute, Biomedical Research Center v.v.i., Slovak Academy of Sciences, 845 05 Bratislava, Slovakia
| | - Eva Markova
- Department of Radiobiology, Cancer Research Institute, Biomedical Research Center v.v.i., Slovak Academy of Sciences, 845 05 Bratislava, Slovakia
| | - Pavol Kosik
- Department of Radiobiology, Cancer Research Institute, Biomedical Research Center v.v.i., Slovak Academy of Sciences, 845 05 Bratislava, Slovakia
| | - Katarina Vigasova
- Department of Radiobiology, Cancer Research Institute, Biomedical Research Center v.v.i., Slovak Academy of Sciences, 845 05 Bratislava, Slovakia
| | - Sachin Gulati
- Department of Radiobiology, Cancer Research Institute, Biomedical Research Center v.v.i., Slovak Academy of Sciences, 845 05 Bratislava, Slovakia
| | - Lukas Jakl
- Department of Radiobiology, Cancer Research Institute, Biomedical Research Center v.v.i., Slovak Academy of Sciences, 845 05 Bratislava, Slovakia
| | - Katarina Vrobelova
- Department of Radiobiology, Cancer Research Institute, Biomedical Research Center v.v.i., Slovak Academy of Sciences, 845 05 Bratislava, Slovakia
| | - Marta Fekete
- Department of Radiation Oncology, Radiological Centrum, National Cancer Institute, 812 50 Bratislava, Slovakia
| | - Ingrid Zavacka
- Department of Radiation Oncology, Radiological Centrum, National Cancer Institute, 812 50 Bratislava, Slovakia
| | - Margita Pobijakova
- Department of Radiation Oncology, Radiological Centrum, National Cancer Institute, 812 50 Bratislava, Slovakia
| | - Zuzana Dolinska
- Department of Radiation Oncology, Radiological Centrum, National Cancer Institute, 812 50 Bratislava, Slovakia
| | - Igor Belyaev
- Department of Radiobiology, Cancer Research Institute, Biomedical Research Center v.v.i., Slovak Academy of Sciences, 845 05 Bratislava, Slovakia
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Xie L, Liu D, Chen Z, Niu Y, Meng L, Ding W. Non-native Brachiaria humidicola with biological nitrification inhibition capacity stimulates in situ grassland N2O emissions. Front Microbiol 2023; 14:1127179. [PMID: 37007459 PMCID: PMC10064092 DOI: 10.3389/fmicb.2023.1127179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 02/27/2023] [Indexed: 03/19/2023] Open
Abstract
IntroductionBrachiaria humidicola, a tropical grass, could release root exudates with biological nitrification inhibition (BNI) capacity and reduce soil nitrous oxide (N2O) emissions from grasslands. However, evidence of the reduction effect in situ in tropical grasslands in China is lacking.MethodsTo evaluate the potential effects of B. humidicola on soil N2O emissions, a 2-year (2015–2017) field experiment was established in a Latosol and included eight treatments, consisting of two pastures, non-native B. humidicola and a native grass, Eremochloa ophiuroide, with four nitrogen (N) application rates. The annual urea application rates were 0, 150, 300, and 450 kg N ha−1.ResultsThe average 2-year E. ophiuroides biomass with and without N fertilization were 9.07–11.45 and 7.34 t ha−1, respectively, and corresponding values for B. humidicola increased to 31.97–39.07 and 29.54 t ha−1, respectively. The N-use efficiencies under E. ophiuroide and B. humidicola cultivation were 9.3–12.0 and 35.5–39.4%, respectively. Annual N2O emissions in the E. ophiuroides and B. humidicola fields were 1.37 and 2.83 kg N2O-N ha−1, respectively, under no N fertilization, and 1.54–3.46 and 4.30–7.19 kg N2O-N ha−1, respectively, under N fertilization.DiscussionsAccording to the results, B. humidicola cultivation increased soil N2O emissions, especially under N fertilization. This is because B. humidicola exhibited the more effective stimulation effect on N2O production via denitrification primarily due to increased soil organic carbon and exudates than the inhibition effect on N2O production via autotrophic nitrification. Annual yield-scaled N2O emissions in the B. humidicola treatment were 93.02–183.12 mg N2O-N kg−1 biomass, which were significantly lower than those in the E. ophiuroides treatment. Overall, our results suggest that cultivation of the non-native grass, B. humidicola with BNI capacity, increased soil N2O emissions, while decreasing yield-scaled N2O emissions, when compared with native grass cultivation.
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Affiliation(s)
- Lu Xie
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Deyan Liu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Zengming Chen
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Yuhui Niu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Lei Meng
- College of Tropical Crops, Hainan University, Haikou, China
| | - Weixin Ding
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
- *Correspondence: Weixin Ding,
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Pagabeleguem S, Koughuindida O, Salou EW, Gimonneau G, Toé AI, Kaboré BA, Dera KSM, Maïga H, Belem AMG, Sanou/Ouédraogo GMS, Vreysen MJ, Bouyer J. Gamma-radiation of Glossina palpalis gambiensis revisited: effect on fertility and mating competitiveness. Parasite 2023; 30:8. [PMID: 37010449 PMCID: PMC10069399 DOI: 10.1051/parasite/2023009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 02/26/2023] [Indexed: 04/04/2023] Open
Abstract
African animal trypanosomoses are vector-borne diseases that cause enormous livestock losses in sub-Saharan Africa, with drastic socio-economic impacts. Vector control in the context of an area-wide integrated pest management program with a sterile insect technique component requires the production of high-quality sterile male tsetse flies. In our study, we evaluated the effect of irradiation on the fecundity of Glossina palpalis gambiensis to identify the optimal dose that will induce maximum sterility while maintaining biological performance as much as possible. In addition, male mating performance was evaluated in semi-field cages. The irradiation doses used were 90, 100, 110, 120, 130, 140, and 150 Gy, and untreated males were used as the control. The results showed that pupal production and emergence rates were higher in batches of females that had mated with fertile males than in those that had mated with irradiated males with any experimental dose. A dose of 120 Gy administered to male flies induced 97-99% sterility after mating with virgin females. For the semi-field cage experiments, males irradiated with 120 Gy showed good sexual competitiveness as compared to fertile males and those irradiated with 140 Gy, considering the level of filling of spermatheca and the number of pairs formed. The optimal radiation dose of 120 Gy found in this study is slightly different from the traditional dose of 110 Gy that has been used in several eradication programmes in the past. The potential reasons for this difference are discussed, and an argument is made for the inclusion of reliable dosimetry systems in these types of studies.
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Affiliation(s)
- Soumaïla Pagabeleguem
- Institut des Sciences de l'Environnement et du Développement Rural, Université de Dédougou (UDDG), BP 176, Dédougou, Burkina Faso - Insectarium de Bobo-Dioulasso - Campagne d'Éradication de la mouche Tsé-tsé et de la Trypanosomose (IBD-CETT), BP 1087, Bobo-Dioulasso, Burkina Faso
| | - Oumar Koughuindida
- Insectarium de Bobo-Dioulasso - Campagne d'Éradication de la mouche Tsé-tsé et de la Trypanosomose (IBD-CETT), BP 1087, Bobo-Dioulasso, Burkina Faso - Insitut du Développement Rural (IDR), Université Nazi Boni (UNB), BP 1091, Bobo-Dioulasso, Burkina Faso
| | - Ernest Wendemanegde Salou
- Unité de Formation et de Recherche en Sciences de la Vie et de la Terre (UFR-SVT), Université Nazi Boni (UNB), BP 1091, Bobo-Dioulasso, Burkina Faso - Centre International de Recherche-Développement sur l'Élevage en zone Subhumide (CIRDES), BP 454, Bobo-Dioulasso, Burkina Faso
| | - Geoffrey Gimonneau
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), Montpellier 34398, France - Institut Sénégalais de Recherches Agricoles, Laboratoire National d'Élevage et de Recherches Vétérinaires, Service de Bio-écologie et Pathologies Parasitaires, BP 2057, Dakar - Hann, Sénégal
| | - Ange Irénée Toé
- Insectarium de Bobo-Dioulasso - Campagne d'Éradication de la mouche Tsé-tsé et de la Trypanosomose (IBD-CETT), BP 1087, Bobo-Dioulasso, Burkina Faso
| | - Bénéwendé Aristide Kaboré
- Insectarium de Bobo-Dioulasso - Campagne d'Éradication de la mouche Tsé-tsé et de la Trypanosomose (IBD-CETT), BP 1087, Bobo-Dioulasso, Burkina Faso - Insect Pest Control Laboratory, Joint FAO, IAEA Programme of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Wagramer-strasse 5, PO Box 100, Vienna A-1400, Austria
| | - Kiswend-Sida Mikhailou Dera
- Insectarium de Bobo-Dioulasso - Campagne d'Éradication de la mouche Tsé-tsé et de la Trypanosomose (IBD-CETT), BP 1087, Bobo-Dioulasso, Burkina Faso - Insect Pest Control Laboratory, Joint FAO, IAEA Programme of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Wagramer-strasse 5, PO Box 100, Vienna A-1400, Austria
| | - Hamidou Maïga
- Insect Pest Control Laboratory, Joint FAO, IAEA Programme of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Wagramer-strasse 5, PO Box 100, Vienna A-1400, Austria - Institut de Recherche en Sciences de la Santé, BP 545, Bobo-Dioulasso, Burkina Faso
| | - Adrien Marie Gaston Belem
- Insitut du Développement Rural (IDR), Université Nazi Boni (UNB), BP 1091, Bobo-Dioulasso, Burkina Faso
| | - Gisèle Marie Sophie Sanou/Ouédraogo
- Insectarium de Bobo-Dioulasso - Campagne d'Éradication de la mouche Tsé-tsé et de la Trypanosomose (IBD-CETT), BP 1087, Bobo-Dioulasso, Burkina Faso
| | - Marc Jb Vreysen
- Insect Pest Control Laboratory, Joint FAO, IAEA Programme of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Wagramer-strasse 5, PO Box 100, Vienna A-1400, Austria
| | - Jeremy Bouyer
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), Montpellier 34398, France - Insect Pest Control Laboratory, Joint FAO, IAEA Programme of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Wagramer-strasse 5, PO Box 100, Vienna A-1400, Austria
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Pérez-Díaz MA, Alvarado-Gómez E, Martínez-Pardo ME, José Yacamán M, Flores-Santos A, Sánchez-Sánchez R, Martínez-Gutiérrez F, Bach H. Development of Radiosterilized Porcine Skin Electrosprayed with Silver Nanoparticles Prevents Infections in Deep Burns. Int J Mol Sci 2022; 23:13910. [PMID: 36430385 PMCID: PMC9698029 DOI: 10.3390/ijms232213910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 10/29/2022] [Accepted: 11/08/2022] [Indexed: 11/16/2022] Open
Abstract
Extensive burns represent a significant challenge in biomedicine due to the multiple systemic and localized complications resulting from the major skin barrier loss. The functionalization of xenografts with nanostructured antibacterial agents proposes a fast and accessible application to restore barrier function and prevent localized bacterial contamination. Based on this, the objective of this work was to functionalize a xenograft by electrospray deposition with silver nanoparticles (AgNPs) and to evaluate its antibiofilm and cytotoxic effects on human fibroblasts. Initially, AgNPs were synthesized by a green microwave route with sizes of 2.1, 6.8, and 12.2 nm and concentrations of 0.055, 0.167, and 0.500 M, respectively. The AgNPs showed a size relationship directly proportional to the concentration of AgNO3, with a spherical and homogeneous distribution determined by high-resolution transmission electron microscopy. The surface functionalization of radiosterilized porcine skin (RPS) via electrospray deposition with the three AgNP concentrations (0.055, 0.167, and 0.500 M) in the epidermis and the dermis showed a uniform distribution on both surfaces by energy-dispersive X-ray spectroscopy. The antibiofilm assays of clinical multidrug-resistant Pseudomonas aeruginosa showed significant effects at the concentrations of 0.167 and 0.500 M, with a log reduction of 1.3 and 2.6, respectively. Additionally, viability experiments with human dermal fibroblasts (HDF) exposed to AgNPs released from functionalized porcine skin showed favorable tolerance, with retention of viability more significant than 90% for concentrations of 0.05 and 0.167 M after 24 h exposure. Antibacterial activity combined with excellent biocompatibility makes this biomaterial a candidate for antibacterial protection by inhibiting bacterial biofilms in deep burns during early stages of development.
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Affiliation(s)
- Mario Alberto Pérez-Díaz
- Laboratorio de Biotecnología, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra (INR-LGII), Calzada México Xochimilco No. 289, Colonia Arenal de Guadalupe, Tlalpan, Ciudad de México 14389, Mexico
| | - Elizabeth Alvarado-Gómez
- Laboratorio de Antimicrobianos, Biopelículas y Microbiota, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava No. 6, Zona Universitaria, San Luis Potosí 78210, Mexico
| | - María Esther Martínez-Pardo
- Banco de Tejidos Radioesterilizados, Instituto Nacional de Investigaciones Nucleares (BTR-ININ), Carretera México-Toluca S/N La Marquesa, Ocoyoacac 52750, Mexico
| | - Miguel José Yacamán
- Applied Physics and Materials Science Department, Core Faculty Center for Materials Interfaces in Research and Applications (MIRA), Northern Arizona University, Flagstaff, AZ 86011, USA
| | - Andrés Flores-Santos
- Laboratorio de Antimicrobianos, Biopelículas y Microbiota, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava No. 6, Zona Universitaria, San Luis Potosí 78210, Mexico
| | - Roberto Sánchez-Sánchez
- Unidad de Ingeniería de Tejidos Terapia Celular y Medicina Regenerativa, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra (INR-LGII), Calzada México Xochimilco No. 289, Colonia Arenal de Guadalupe, Tlalpan, Ciudad de México 14389, Mexico
- Escuela de Ingeniería y Ciencias, Departamento de Bioingeniería, Instituto Tecnologico de Monterrey, C. Puente No. 222, Colonia Arboledas Sur, Tlalpan, Ciudad de México 14380, Mexico
| | - Fidel Martínez-Gutiérrez
- Laboratorio de Antimicrobianos, Biopelículas y Microbiota, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava No. 6, Zona Universitaria, San Luis Potosí 78210, Mexico
- Centro de Investigación en Ciencias de la Salud y Biomedicina, Universidad Autónoma de San Luis Potosí, Sierra Leona No. 550, Lomas, San Luis Potosí 28210, Mexico
| | - Horacio Bach
- Division of Infectious Diseases, Department of Medicine, University of British Columbia, 2660 Oak Street, Vancouver, BC V6H 3Z6, Canada
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Jebri S, Yahya M, Rahmani F, Amri I, Hamdi M, Hmaied F. Inactivation of biohazards in healthcare wastewater by E-Beam and Gamma irradiation: a comparative study. Environ Sci Pollut Res Int 2022; 29:75575-75586. [PMID: 35657553 DOI: 10.1007/s11356-022-21159-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 05/24/2022] [Indexed: 06/15/2023]
Abstract
The main objective of this study is to evaluate the effect of irradiation by Gamma rays and Electron Beam (E-Beam) on naturally occurring microorganisms shed in healthcare wastewater issued from multi-specialties hospital. We examined the susceptibility of naturally occurring total indicator bacteriophages towards Gamma rays and E-Beam irradiation to evaluate their appropriateness as viral indicators for healthcare wastewater quality control. Results showed that healthcare wastewater is a rich matrix containing bacteriophages surrogates of pathogenic waterborne viruses (4.5 Log10 PFU/100 mL for SOMCPH and 2.3 Log10 PFU/100 mL for FRNAPH), antibiotic resistant bacteria (Mean concentrations from 2.3 to 5.5 Log10 CFU/100 mL), molds and yeasts (2.7 Log10 CFU/100 mL), and spores of Clostridium perfringens (Mean concentration of 3.3 Log10 CFU/100 mL). After E-Beam irradiation, naturally occurring bacteria in healthcare wastewater showed lower resistance patterns (D10 values ranging between 0.21 ± 0.005 and 0.59 ± 0.005) compared to those obtained after Gamma irradiation (D10 values ranging between 0.25 ± 0.015 and 0.70 ± 0.0001). Spores of Clostridium perfringens were the most resistant assayed microbes either after E-Beam (D10 values of 3.74 ± 0.005) or Gamma irradiation (D10 values of 4.77 ± 0.025) of collected samples. According to inactivation patterns, a dose of 10 kGy was sufficient for a complete inactivation of spores. Bacteriophages isolated from healthcare wastewater showed the same resistance patterns as those previously obtained in urban treated sewage and were inactivated using higher doses than waterborne bacteria (D10 values of SOMCPH 1.46 ± 0.057; D10 values of FRNAPH 1.03 ± 0.057). Their resistance to irradiation treatment in such complex matrix corroborates their use to survey the viral quality of healthcare wastewater before their discharge in the urban sanitation network. D10 value analysis showed that bacteria and bacteriophages inactivation by E-Beam irradiation required lower doses than those required for their inactivation using Gamma rays. According to inactivation patterns, a dose of 7 kGy was sufficient for total inactivation of both pathogenic bacteria and viruses. Thus, E-Beam irradiation seems to be an efficient physical pre-treatment process for healthcare wastewater treatment prior to its discharge in urban sanitation system to ensure compliance with environmental standards and protect public health.
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Affiliation(s)
- Sihem Jebri
- Laboratoire de Biotechnologies Et Techniques Nucléaires, CNSTN, Technopôle de Sidi Thabet, 2020, Sidi Thabet, Tunisia.
| | - Mariem Yahya
- Laboratoire de Biotechnologies Et Techniques Nucléaires, CNSTN, Technopôle de Sidi Thabet, 2020, Sidi Thabet, Tunisia
| | - Faten Rahmani
- Laboratoire de Biotechnologies Et Techniques Nucléaires, CNSTN, Technopôle de Sidi Thabet, 2020, Sidi Thabet, Tunisia
| | - Islem Amri
- Laboratoire de Biotechnologies Et Techniques Nucléaires, CNSTN, Technopôle de Sidi Thabet, 2020, Sidi Thabet, Tunisia
| | - Moktar Hamdi
- Laboratoire Ecologie Et Technologie Microbienne, Institut National Des Sciences Appliquées de Tunis, Tunis Carthage University, BP 676, 1080, Tunis, Tunisia
| | - Fatma Hmaied
- Laboratoire de Biotechnologies Et Techniques Nucléaires, CNSTN, Technopôle de Sidi Thabet, 2020, Sidi Thabet, Tunisia
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Divala OH, Mwakhwawa Q, Phiri MM, Owino V, El Kari K, Maleta KM. Development of bioelectrical impedance-based equations for the prediction of body composition of Malawian adolescents aged 10-18 years: a cross-sectional study. BMJ Open 2022; 12:e058551. [PMID: 35379640 PMCID: PMC8981360 DOI: 10.1136/bmjopen-2021-058551] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
OBJECTIVES The accuracy of bioelectrical impedance analysis (BIA) depends on population-specific prediction equations and there is no population-specific equation for predicting fat-free mass (FFM) in Malawian adolescents. This study aimed at determining the agreement between FFM measured by deuterium oxide dilution technique (the reference) and FFM by BIA; and propose BIA-based prediction equations to estimate FFM for Malawian adolescents. DESIGN This was a cross-sectional study. SETTING The study was conducted in Blantyre, Malawi PARTICIPANTS: 186 Malawian adolescents aged between 10 and 18 years were included in this study. Body composition was estimated by both the BodyStat BIA analyser and the deuterium oxide dilution method. RESULTS BIA inbuilt equation underestimated FFM compared with deuterium oxide dilution (p=0.039). The new prediction equation for FFM (kg)=-4.316+ 0.425* height2(cm)/resistance (Ω)+1.287* sex (male=1, female=0)+0.307*age(years)+0.344* weight(kg)+0.019*reactance(Ω) yielded an R2 of 0.926. The equation for total body water (TBW) (kg)=-2.152 + 0.328*height2(cm)/resistance (Ω) 0.910*sex (male=1, female=0)+0.307 *age (years)+0.249*weight(kg)+0.015*reactance(Ω) yielded an R2 of 0.922. The Bland-Altman plot illustrated a good level of concordance between the FFM and TBW predicted by the new equations and the values derived using deuterium dilution method. CONCLUSIONS The new BIA prediction equations for estimating FFM and TBW could be used to assess with very good accuracy and precision the body composition of Malawian and adolescents with similar characteristics.
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Affiliation(s)
- Oscar Henry Divala
- Department of Public Health, School of Public Health and Family Medicine, College of Medicine, University of Malawi, Blantyre, Malawi
| | - Queen Mwakhwawa
- Department of Public Health, School of Public Health and Family Medicine, College of Medicine, University of Malawi, Blantyre, Malawi
| | - Madalitso Makawa Phiri
- Department of Public Health, School of Public Health and Family Medicine, College of Medicine, University of Malawi, Blantyre, Malawi
| | - Victor Owino
- Nutritional and Health Related Environmental Studies Section, Division of Human Health, International Atomic Energy Agency, Vienna, Austria
| | - Khalid El Kari
- Nutrition and Food Unit, DSV, DERS, National Center for Energy Sciences and Nuclear Techniques, Rabat, Morocco
| | - Kenneth Mphatso Maleta
- Department of Public Health, School of Public Health and Family Medicine, College of Medicine, University of Malawi, Blantyre, Malawi
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