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Kuczera K, Orłowska A, Smreczak M, Frant M, Trębas P, Rola J. Prevalence of Astroviruses in Different Animal Species in Poland. Viruses 2024; 16:80. [PMID: 38257780 PMCID: PMC10819871 DOI: 10.3390/v16010080] [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: 11/08/2023] [Revised: 12/28/2023] [Accepted: 01/01/2024] [Indexed: 01/24/2024] Open
Abstract
Astroviruses (AstVs) are small RNA viruses characterized by a high mutation rate, the ability to recombine, and interspecies transmission, which allows them to infect a multitude of hosts including humans, companion animals, and farmed animals as well as wildlife. AstVs are stable in the environment, and their transmission is usually through the fecal-oral route or via contaminated water and food. Although direct zoonotic transmission was not confirmed, interspecies transmission events have occurred or have been indicated to occur in the past between wild and domestic animals and humans. They cause large economic losses, mainly in the poultry sector, due to gastroenteritis and mortality. In young children, they are the second most common cause of diarrhea. This study involved 166 intestine samples and pools of spleen, lymph node, and kidney samples collected from 352 wild animals, 52 pigs, and 31 companion animals. Astroviruses were detected in the intestine samples and were separately detected in pools of tissue samples prepared for individual animals using a heminested RT-PCR protocol. Amplicons were subjected to Sanger sequencing, and a phylogenetic analysis of 320 nt RNA-dependent RNA polymerase (RdRp) fragments referring to known nt sequences of astroviruses was performed. Astroviral RNA was detected in the intestine samples and/or tissue pools of red foxes (nine positive intestines and six positive tissue pools), rats (two positive intestines and three positive tissue pools), a cat (one AstV detected in an intestine sample), pigs (eight positive tissue pools), and wild boars (two positive pools of spleens, kidneys, and lymph nodes). No astroviral RNA was detected in wild mustelids, dogs, or other small wild animals including rodents. A phylogenetic analysis revealed that the astroviruses detected during this study were mostly host-specific, such as porcine, canine, and rat astroviruses that were highly homologous to the sequences of reference strains. In one of two wild boars, an AstV distinct to porcine species was found with the highest nt identity to Avastroviruses, i.e., turkey astroviruses, which suggests potential cross-species transmission of the virus, as previously described. Here, we present the first detection of astroviruses in the population of wild animals, companion animals, and pigs in Poland, confirming that astroviruses are frequent pathogens circulating in animals in the field. Our study also suggests potential cross-species transmission of Avaastrovirus to wild boars; however, further molecular characterization is needed.
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Affiliation(s)
- Konrad Kuczera
- Voivodship Veterinary Inspectorate Katowice, ul. Brynowska 25a, 40-585 Katowice, Poland;
| | - Anna Orłowska
- Department of Virology, National Veterinary Research Institute, 24-100 Puławy, Poland; (P.T.); (J.R.)
| | - Marcin Smreczak
- Department of Virology, National Veterinary Research Institute, 24-100 Puławy, Poland; (P.T.); (J.R.)
| | - Maciej Frant
- Department of Swine Diseases, National Veterinary Research Institute, 24-100 Puławy, Poland;
| | - Paweł Trębas
- Department of Virology, National Veterinary Research Institute, 24-100 Puławy, Poland; (P.T.); (J.R.)
| | - Jerzy Rola
- Department of Virology, National Veterinary Research Institute, 24-100 Puławy, Poland; (P.T.); (J.R.)
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Pepin KM, Borowik T, Frant M, Plis K, Podgórski T. Risk of African swine fever virus transmission among wild boar and domestic pigs in Poland. Front Vet Sci 2023; 10:1295127. [PMID: 38026636 PMCID: PMC10657852 DOI: 10.3389/fvets.2023.1295127] [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: 09/15/2023] [Accepted: 10/16/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction African swine fever (ASF) is a notifiable disease of swine that impacts global pork trade and food security. In several countries across the globe, the disease persists in wild boar (WB) populations sympatric to domestic pig (DP) operations, with continued detections in both sectors. While there is evidence of spillover and spillback between the sectors, the frequency of occurrence and relative importance of different risk factors for transmission at the wildlife-livestock interface remain unclear. Methods To address this gap, we leveraged ASF surveillance data from WB and DP across Eastern Poland from 2014-2019 in an analysis that quantified the relative importance of different risk factors for explaining variation in each of the ASF surveillance data from WB and DP. Results ASF prevalence exhibited different seasonal trends across the sectors: apparent prevalence was much higher in summer (84% of detections) in DP, but more consistent throughout the year in WB (highest in winter with 45%, lowest in summer at 15%). Only 21.8% of DP-positive surveillance data included surveillance in WB nearby (within 5 km of the grid cell within the last 4 weeks), while 41.9% of WB-positive surveillance samples included any DP surveillance samples nearby. Thus, the surveillance design afforded twice as much opportunity to find DP-positive samples in the recent vicinity of WB-positive samples compared to the opposite, yet the rate of positive WB samples in the recent vicinity of a positive DP sample was 48 times as likely than the rate of positive DP samples in the recent vicinity of a positive WB sample. Our machine learning analyses found that positive samples in WB were predicted by WB-related risk factors, but not to DP-related risk factors. In contrast, WB risk factors were important for predicting detections in DP on a few spatial and temporal scales of data aggregation. Discussion Our results highlight that spillover from WB to DP might be more frequent than the reverse, but that the structure of current surveillance systems challenge quantification of spillover frequency and risk factors. Our results emphasize the importance of, and provide guidance for, improving cross-sector surveillance designs.
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Affiliation(s)
- Kim M. Pepin
- National Wildlife Research Center, USDA, APHIS, Wildlife Services, Fort Collins, CO, United States
| | - Tomasz Borowik
- Mammal Research Institute, Polish Academy of Sciences, Białowieża, Poland
| | - Maciej Frant
- Department of Swine Diseases, National Veterinary Research Institute, Puławy, Poland
| | - Kamila Plis
- Mammal Research Institute, Polish Academy of Sciences, Białowieża, Poland
| | - Tomasz Podgórski
- Mammal Research Institute, Polish Academy of Sciences, Białowieża, Poland
- Department of Game Management and Wildlife Biology, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, Prague, Czechia
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Bezymennyi M, Tarasov O, Kyivska GV, Mezhenska NA, Mandyhra S, Kovalenko G, Sushko M, Hudz N, Skorokhod SV, Datsenko R, Muzykina L, Milton E, Sapachova MA, Nychyk S, Halka I, Frant M, Huettmann F, Drown DM, Gerilovych A, Mezhenskyi AA, Bortz E, Lange CE. Epidemiological Characterization of African Swine Fever Dynamics in Ukraine, 2012-2023. Vaccines (Basel) 2023; 11:1145. [PMID: 37514961 PMCID: PMC10384127 DOI: 10.3390/vaccines11071145] [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: 03/31/2023] [Revised: 06/09/2023] [Accepted: 06/11/2023] [Indexed: 07/30/2023] Open
Abstract
African swine fever (ASF) is a viral disease, endemic to Africa, that causes high mortality when introduced into domestic pig populations. Since the emergence of p72-genotype II African swine fever virus (ASFV) in Georgia in 2007, an ASF epidemic has been spreading across Europe and many countries in Asia. The epidemic first reached Ukraine in 2012. To better understand the dynamics of spread of ASF in Ukraine, we analyzed spatial and temporal outbreak data reported in Ukraine between 2012 and mid-2023. The highest numbers of outbreaks were reported in 2017 (N = 163) and 2018 (N = 145), with overall peak numbers of ASF outbreaks reported in August (domestic pigs) and January (wild boars). While cases were reported from most of Ukraine, we found a directional spread from the eastern and northern borders towards the western and southern regions of Ukraine. Many of the early outbreaks (before 2016) were adjacent to the border, which is again true for more recent outbreaks in wild boar, but not for recent outbreaks in domestic pigs. Outbreaks prior to 2016 also occurred predominantly in areas with a below average domestic pig density. This new analysis suggests that wild boars may have played an important role in the introduction and early spread of ASF in Ukraine. However, in later years, the dynamic suggests human activity as the predominant driver of spread and a separation of ASF epizootics between domestic pigs and in wild boars. The decline in outbreaks since 2019 suggests that the implemented mitigation strategies are effective, even though long-term control or eradication remain challenging and will require continued intensive surveillance of ASF outbreak patterns.
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Affiliation(s)
- Maksym Bezymennyi
- Institute of Veterinary Medicine (IVM), National Academy of Agrarian Sciences of Ukraine, 03151 Kyiv, Ukraine
| | - Oleksandr Tarasov
- Institute of Veterinary Medicine (IVM), National Academy of Agrarian Sciences of Ukraine, 03151 Kyiv, Ukraine
| | - Ganna V Kyivska
- State Scientific Research Institute of Laboratory Diagnostics and Veterinary and Sanitary Expertise (SSRILDVSE), 03151 Kyiv, Ukraine
| | - Nataliia A Mezhenska
- State Scientific Research Institute of Laboratory Diagnostics and Veterinary and Sanitary Expertise (SSRILDVSE), 03151 Kyiv, Ukraine
| | - Svitlana Mandyhra
- Institute of Veterinary Medicine (IVM), National Academy of Agrarian Sciences of Ukraine, 03151 Kyiv, Ukraine
- State Scientific Research Institute of Laboratory Diagnostics and Veterinary and Sanitary Expertise (SSRILDVSE), 03151 Kyiv, Ukraine
| | - Ganna Kovalenko
- Institute of Veterinary Medicine (IVM), National Academy of Agrarian Sciences of Ukraine, 03151 Kyiv, Ukraine
- Department of Biological Sciences, University of Alaska Anchorage, Anchorage, AK 99508, USA
| | - Mykola Sushko
- State Scientific Research Institute of Laboratory Diagnostics and Veterinary and Sanitary Expertise (SSRILDVSE), 03151 Kyiv, Ukraine
| | - Nataliia Hudz
- Institute of Veterinary Medicine (IVM), National Academy of Agrarian Sciences of Ukraine, 03151 Kyiv, Ukraine
| | - Serhii V Skorokhod
- State Scientific Research Institute of Laboratory Diagnostics and Veterinary and Sanitary Expertise (SSRILDVSE), 03151 Kyiv, Ukraine
| | - Roman Datsenko
- State Scientific Research Institute of Laboratory Diagnostics and Veterinary and Sanitary Expertise (SSRILDVSE), 03151 Kyiv, Ukraine
| | - Larysa Muzykina
- Institute of Veterinary Medicine (IVM), National Academy of Agrarian Sciences of Ukraine, 03151 Kyiv, Ukraine
| | - Elaina Milton
- Department of Biological Sciences, University of Alaska Anchorage, Anchorage, AK 99508, USA
| | - Maryna A Sapachova
- State Scientific Research Institute of Laboratory Diagnostics and Veterinary and Sanitary Expertise (SSRILDVSE), 03151 Kyiv, Ukraine
| | - Serhii Nychyk
- Institute of Veterinary Medicine (IVM), National Academy of Agrarian Sciences of Ukraine, 03151 Kyiv, Ukraine
| | - Ihor Halka
- Institute of Veterinary Medicine (IVM), National Academy of Agrarian Sciences of Ukraine, 03151 Kyiv, Ukraine
| | - Maciej Frant
- Department of Swine Diseases, National Veterinary Research Institute (NVRI), 24-100 Pulawy, Poland
| | - Falk Huettmann
- Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK 99775, USA
- Department of Biology and Wildlife, University of Alaska Fairbanks, Fairbanks, AK 99775, USA
| | - Devin M Drown
- Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, AK 99775, USA
- Department of Biology and Wildlife, University of Alaska Fairbanks, Fairbanks, AK 99775, USA
| | - Anton Gerilovych
- State Scientific Research Institute of Laboratory Diagnostics and Veterinary and Sanitary Expertise (SSRILDVSE), 03151 Kyiv, Ukraine
| | - Andrii A Mezhenskyi
- State Scientific Research Institute of Laboratory Diagnostics and Veterinary and Sanitary Expertise (SSRILDVSE), 03151 Kyiv, Ukraine
| | - Eric Bortz
- Institute of Veterinary Medicine (IVM), National Academy of Agrarian Sciences of Ukraine, 03151 Kyiv, Ukraine
- Department of Biological Sciences, University of Alaska Anchorage, Anchorage, AK 99508, USA
| | - Christian E Lange
- Department of Biological Sciences, University of Alaska Anchorage, Anchorage, AK 99508, USA
- Metabiota Inc., San Francisco, CA 94104, USA
- Labyrinth Global Health, Saint Petersburg, FL 33704, USA
- Department of Biology, Kwantlen Polytechnic University, Surrey, BC V3W 2MB, Canada
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Gallardo C, Casado N, Soler A, Djadjovski I, Krivko L, Madueño E, Nieto R, Perez C, Simon A, Ivanova E, Donescu D, Milicevik V, Chondrokouki E, Nurmoja I, Frant M, Feliziani F, Václavek P, Pileviciene S, Marisa A. A multi gene-approach genotyping method identifies 24 genetic clusters within the genotype II-European African swine fever viruses circulating from 2007 to 2022. Front Vet Sci 2023; 10:1112850. [PMID: 36761884 PMCID: PMC9905734 DOI: 10.3389/fvets.2023.1112850] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 01/06/2023] [Indexed: 01/26/2023] Open
Abstract
Introduction African swine fever (ASF) is a contagious viral disease of pigs and wild boar that poses a major threat to the global swine industry. The genotype II African swine fever virus (ASFV) entered the European Union (EU) in 2014 and since then fourteen countries have been affected, Italy and North Macedonia being the last in 2022. While whole genome sequencing remains the gold standard for the identification of new genetic markers, sequencing of multiple loci with significant variations could be used as a rapid and cost-effective alternative to track outbreaks and study disease evolution in endemic areas. Materials and methods To further our understanding of the epidemiology and spread of ASFV in Europe, 382 isolates collected during 2007 to 2022 were sequenced. The study was initially performed by sequencing the central variable region (CVR), the intergenic region (IGR) between the I73R and I329L genes and the O174L and K145R genes. For further discrimination, two new PCRs were designed to amplify the IGR between the 9R and 10R genes of the multigene family 505 (MGF505) and the IGR between the I329L and I215L genes. The sequences obtained were compared with genotype II isolates from Europe and Asia. Results The combination of the results obtained by sequencing these variable regions allowed to differentiate the European II-ASFV genotypes into 24 different groups. In addition, the SNP identified in the IGR I329L-I215L region, not previously described, grouped the viruses from North Macedonia that caused the 2022 outbreaks with viruses from Romania, Bulgaria, Serbia and Greece, differentiating from other genotype II isolates present in Europe and Asia. Furthermore, tandem repeat sequence (TRS) within the 9R-10R genes of the multigene family 505 (MGF505) revealed eight different variants circulating. Discussion These findings describe a new multi-gene approach sequencing method that can be used in routine genotyping to determine the origin of new introductions in ASF-free areas and track infection dynamics in endemic areas.
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Affiliation(s)
- Carmina Gallardo
- 1European Union Reference Laboratory for ASF (EURL-ASF): Centro De investigación en Sanidad Animal (CISA-INIA, CSIC), Madrid, Spain,*Correspondence: Carmina Gallardo ✉
| | - Nadia Casado
- 1European Union Reference Laboratory for ASF (EURL-ASF): Centro De investigación en Sanidad Animal (CISA-INIA, CSIC), Madrid, Spain
| | - Alejandro Soler
- 1European Union Reference Laboratory for ASF (EURL-ASF): Centro De investigación en Sanidad Animal (CISA-INIA, CSIC), Madrid, Spain
| | - Igor Djadjovski
- 2Faculty of Veterinary Medicine, University Ss. Cyril and Methodius in Skopje, Skopje, North Macedonia
| | - Laura Krivko
- 3Latvia NRL: Laboratory of Microbiology and Pathology, Institute of Food Safety, Animal Health and Enviroment, BIOR, Riga, Latvia
| | - Encarnación Madueño
- 1European Union Reference Laboratory for ASF (EURL-ASF): Centro De investigación en Sanidad Animal (CISA-INIA, CSIC), Madrid, Spain
| | - Raquel Nieto
- 1European Union Reference Laboratory for ASF (EURL-ASF): Centro De investigación en Sanidad Animal (CISA-INIA, CSIC), Madrid, Spain
| | - Covadonga Perez
- 1European Union Reference Laboratory for ASF (EURL-ASF): Centro De investigación en Sanidad Animal (CISA-INIA, CSIC), Madrid, Spain
| | - Alicia Simon
- 1European Union Reference Laboratory for ASF (EURL-ASF): Centro De investigación en Sanidad Animal (CISA-INIA, CSIC), Madrid, Spain
| | - Emiliya Ivanova
- 4Bulgaria NRL: National Diagnostic and Research Veterinary Medical Institute (NDVRI), Sofia, Bulgaria
| | - Daniel Donescu
- 5Romania NRL: Institute for Diagnostic and Animal Health, Bucharest, Romania
| | - Vesna Milicevik
- 6Republic of Serbia NRL: Institute of Veterinary Medicine of Serbia, Belgrade, Serbia
| | - Eleni Chondrokouki
- 7Greece NRL: Greek Ministry of Rural Development and Food FMD, Virological, Rickettsial & Exotic Diseases, Athens, Greece
| | - Imbi Nurmoja
- 8Estonian NRL: National Centre for Laboratory Research and Risk Assessment (LABRIS), Tartu, Estonia
| | - Maciej Frant
- 9Poland NRL: National Veterinary Research Institute, Puławy, Poland
| | - Francesco Feliziani
- 10Italy NRL: Istituto Zooprofilattico Sperimentale (IZS) dell'Umbria e delle Marche, Perugia, Italy
| | - Petr Václavek
- 11Czech Republic NRL: State Veterinary Institute Jihlava, Jihlava, Czechia
| | - Simona Pileviciene
- 12Lithuania NRL: National Food and Veterinary Risk Assessment Institute (NFVRAI), Vilnius, Lithuania
| | - Arias Marisa
- 1European Union Reference Laboratory for ASF (EURL-ASF): Centro De investigación en Sanidad Animal (CISA-INIA, CSIC), Madrid, Spain
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Hwang HJ, Choi YS, Song K, Frant M, Kim JH. Development and validation of a fast quantitative real-time PCR assay for the detection of African swine fever virus. Front Vet Sci 2023; 9:1037728. [PMID: 36686190 PMCID: PMC9845278 DOI: 10.3389/fvets.2022.1037728] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 10/04/2022] [Indexed: 01/05/2023] Open
Abstract
African swine fever virus (ASFV) is a double-stranded DNA virus that causes African swine fever (ASF), a lethal hemorrhagic fever that is highly contagious among domestic pigs and wild boars. Due to the high mortality rates and highly contagious nature of the ASF, it is important to develop a fast detection method for ASFV with high sensitivity and specificity to take an immediate action to stop wide spread of the virulent disease. Therefore, a fast and quantitative molecular detection method of ASFV is presented in this study. A total of 24 genotypes of ASFV have been identified based on nucleic acid sequences of the major capsid protein p72. The primers and probe of the present assay was designed to detect all of the p72-based genotypes of ASFV. The turnaround time for PCR detection was within 50 min which is at least about two-times faster compared to other PCR assays. Limit of detection (LoD) was 6.91 genomic copies/reaction for the most virulent genotype II. LoD values for other genotypes were within 10-20 copies/reaction. Cross-reactivity of the assay was validated using a panel of pathogens related to swine disease, and no cross-reactivity was observed. Positive and negative clinical samples (50 samples each) obtained from sick and healthy animals, were used to validate the assay. The results showed that 100% agreement for both positive and negative samples. In summary, the assay described in this study offers the advantage of rapid detection of all genotypes of ASFV with high sensitivity and specificity. The assay is a valuable tool both in clinical and laboratory uses for sensitive and fast detection of ASFV.
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Affiliation(s)
| | | | | | - Maciej Frant
- Department of Swine Diseases, National Veterinary Research Institute, Puławy, Poland
| | - Jeong Hee Kim
- Department of Oral Biochemistry and Molecular Biology, School of Dentistry, Kyung Hee University, Seoul, South Korea,Department of KHU-KIST Converging Science and Technology, Graduate School, Kyung Hee University, Seoul, South Korea,*Correspondence: Jeong Hee Kim
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Gómez-Gómez M, Sánchez C, Peransi S, Zurita D, Bellieres L, Recuero S, Rodrigo M, Simón S, Camarca A, Capo A, Staiano M, Varriale A, D’Auria S, Manessis G, Gelasakis AI, Bossis I, Balka G, Dénes L, Frant M, Nannucci L, Bonasso M, Giusti A, Griol A. Photonic Label-Free Biosensors for Fast and Multiplex Detection of Swine Viral Diseases. Sensors (Basel) 2022; 22:s22030708. [PMID: 35161454 PMCID: PMC8838678 DOI: 10.3390/s22030708] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/10/2022] [Accepted: 01/16/2022] [Indexed: 02/04/2023]
Abstract
In this paper we present the development of photonic integrated circuit (PIC) biosensors for the label-free detection of six emerging and endemic swine viruses, namely: African Swine Fever Virus (ASFV), Classical Swine Fever Virus (CSFV), Porcine Reproductive and Respiratory Syndrome Virus (PPRSV), Porcine Parvovirus (PPV), Porcine Circovirus 2 (PCV2), and Swine Influenza Virus A (SIV). The optical biosensors are based on evanescent wave technology and, in particular, on Resonant Rings (RRs) fabricated in silicon nitride. The novel biosensors were packaged in an integrated sensing cartridge that included a microfluidic channel for buffer/sample delivery and an optical fiber array for the optical operation of the PICs. Antibodies were used as molecular recognition elements (MREs) and were selected based on western blotting and ELISA experiments to ensure the high sensitivity and specificity of the novel sensors. MREs were immobilized on RR surfaces to capture viral antigens. Antibody–antigen interactions were transduced via the RRs to a measurable resonant shift. Cell culture supernatants for all of the targeted viruses were used to validate the biosensors. Resonant shift responses were dose-dependent. The results were obtained within the framework of the SWINOSTICS project, contributing to cover the need of the novel diagnostic tools to tackle swine viral diseases.
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Affiliation(s)
- Maribel Gómez-Gómez
- Nanophotonics Technology Center, Universitat Politècnica de València, 46022 València, Spain; (D.Z.); (L.B.); (A.G.)
- Correspondence: ; Tel.: +34-96-3879748
| | - Carles Sánchez
- Lumensia Sensors S.L., 46022 València, Spain; (C.S.); (S.P.); (S.R.); (M.R.); (S.S.)
| | - Sergio Peransi
- Lumensia Sensors S.L., 46022 València, Spain; (C.S.); (S.P.); (S.R.); (M.R.); (S.S.)
| | - David Zurita
- Nanophotonics Technology Center, Universitat Politècnica de València, 46022 València, Spain; (D.Z.); (L.B.); (A.G.)
| | - Laurent Bellieres
- Nanophotonics Technology Center, Universitat Politècnica de València, 46022 València, Spain; (D.Z.); (L.B.); (A.G.)
| | - Sara Recuero
- Lumensia Sensors S.L., 46022 València, Spain; (C.S.); (S.P.); (S.R.); (M.R.); (S.S.)
| | - Manuel Rodrigo
- Lumensia Sensors S.L., 46022 València, Spain; (C.S.); (S.P.); (S.R.); (M.R.); (S.S.)
| | - Santiago Simón
- Lumensia Sensors S.L., 46022 València, Spain; (C.S.); (S.P.); (S.R.); (M.R.); (S.S.)
| | - Alessandra Camarca
- Institute of Food Science, National Research Conuncil, 83100 Avelino, Italy; (A.C.); (A.C.); (M.S.); (A.V.); (S.D.)
| | - Alessandro Capo
- Institute of Food Science, National Research Conuncil, 83100 Avelino, Italy; (A.C.); (A.C.); (M.S.); (A.V.); (S.D.)
- URT-ISA at Department of Biology, University of Naples Federico II, 80126 Napoli, Italy
| | - Maria Staiano
- Institute of Food Science, National Research Conuncil, 83100 Avelino, Italy; (A.C.); (A.C.); (M.S.); (A.V.); (S.D.)
| | - Antonio Varriale
- Institute of Food Science, National Research Conuncil, 83100 Avelino, Italy; (A.C.); (A.C.); (M.S.); (A.V.); (S.D.)
- URT-ISA at Department of Biology, University of Naples Federico II, 80126 Napoli, Italy
| | - Sabato D’Auria
- Institute of Food Science, National Research Conuncil, 83100 Avelino, Italy; (A.C.); (A.C.); (M.S.); (A.V.); (S.D.)
- Department of Biology, Agriculture and Food Sciences, National Research Council of Italy (CNR-DISBA), 00185 Rome, Italy
| | - Georgios Manessis
- Laboratory of Anatomy and Physiology of Farm Animals, Department of Animal Science, Agricultural University of Athens (AUA), 11855 Athens, Greece; (G.M.); (A.I.G.)
| | - Athnasios I. Gelasakis
- Laboratory of Anatomy and Physiology of Farm Animals, Department of Animal Science, Agricultural University of Athens (AUA), 11855 Athens, Greece; (G.M.); (A.I.G.)
| | - Ioannis Bossis
- Laboratory of Animal Husbandry, Department of Animal Production, School of Agriculture, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
| | - Gyula Balka
- Department of Pathology, University of Veterinary Medicine, István u. 2, 1078 Budapest, Hungary; (G.B.); (L.D.)
| | - Lilla Dénes
- Department of Pathology, University of Veterinary Medicine, István u. 2, 1078 Budapest, Hungary; (G.B.); (L.D.)
| | - Maciej Frant
- Department of Swine Diseases, National Veterinary Research Institute, al. Partyzantow 57, 24-100 Pulawy, Poland;
| | - Lapo Nannucci
- Dipartimento di Scienze e Tecnologie Agrarie Alimentari Ambientali e Forestali (DAGRI), Università degli Studi di Firenze, 50144 Florence, Italy;
| | | | | | - Amadeu Griol
- Nanophotonics Technology Center, Universitat Politècnica de València, 46022 València, Spain; (D.Z.); (L.B.); (A.G.)
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Gallardo C, Soler A, Nurmoja I, Cano-Gómez C, Cvetkova S, Frant M, Woźniakowski G, Simón A, Pérez C, Nieto R, Arias M. Dynamics of African swine fever virus (ASFV) infection in domestic pigs infected with virulent, moderate virulent and attenuated genotype II ASFV European isolates. Transbound Emerg Dis 2021; 68:2826-2841. [PMID: 34273247 DOI: 10.1111/tbed.14222] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 06/28/2021] [Accepted: 07/04/2021] [Indexed: 01/15/2023]
Abstract
This study aimed to compare the infection dynamics of three genotype II African swine fever viruses (ASFV) circulating in Europe. Eighteen domestic pigs divided into three groups were infected intramuscularly or by direct contact with two haemadsorbent ASFVs (HAD) from Poland (Pol16/DP/ OUT21) and Estonia (Est16/WB/Viru8), and with the Latvian non-HAD ASFV (Lv17/WB/Rie1). Parameters, such as symptoms, pathogenicity, and distribution of the virus in tissues, humoral immune response, and dissemination of the virus by blood, oropharyngeal and rectal routes, were investigated. The Polish ASFV caused a case of rapidly developing fatal acute disease, while the Estonian ASFV caused acute to sub-acute infections and two animals survived. In contrast, animals infected with the ASFV from Latvia developed a more subtle, mild, or even subclinical disease. Oral excretion was sporadic or even absent in the attenuated group, whereas in animals that developed an acute or sub-acute form of ASF, oral excretion began at the same time the ASFV was detected in the blood, or even 3 days earlier, and persisted up to 22 days. Regardless of virulence, blood was the main route of transmission of ASFV and infectious virus was isolated from persistently infected animals for at least 19 days in the attenuated group and up to 44 days in the group of moderate virulence. Rectal excretion was limited to the acute phase of infection. In terms of diagnostics, the ASFV genome was detected in contact pigs from oropharyngeal samples earlier than in blood, independently of virulence. Together with blood, both samples could allow to detect ASFV infection for a longer period. The results presented here provide quantitative data on the spread and excretion of ASFV strains of different virulence among domestic pigs that can help to better focus surveillance activities and, thus, increase the ability to detect ASF introductions earlier.
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Affiliation(s)
- Carmina Gallardo
- Centro de Investigación en Sanidad Animal, CISA, INIA-CSIC, European Union Reference Laboratory for African Swine Fever (EURL), Valdeolmos, Madrid, Spain
| | - Alejandro Soler
- Centro de Investigación en Sanidad Animal, CISA, INIA-CSIC, European Union Reference Laboratory for African Swine Fever (EURL), Valdeolmos, Madrid, Spain
| | - Imbi Nurmoja
- Estonian Veterinary and Food Laboratory, Estonian ASF-National reference laboratory (NRL), Kreutzwaldi, Tartu, Estonia
| | - Cristina Cano-Gómez
- Centro de Investigación en Sanidad Animal, CISA, INIA-CSIC, European Union Reference Laboratory for African Swine Fever (EURL), Valdeolmos, Madrid, Spain
| | - Svetlana Cvetkova
- Laboratory of Microbiology and Pathology Institute of Food Safety, Animal Health and Enviroment, BIOR, Latvian ASF-National reference laboratory, Lejupes, Riga, Latvia
| | - Maciej Frant
- National Veterinary Research Institute, Poland ASF-National reference laboratory, Partyzantow, Pulawy, Poland
| | - Grzegorz Woźniakowski
- National Veterinary Research Institute, Poland ASF-National reference laboratory, Partyzantow, Pulawy, Poland.,Department of Diagnostics and Clinical Sciences, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Toruń, Lwowska, Toruń, Poland
| | - Alicia Simón
- Centro de Investigación en Sanidad Animal, CISA, INIA-CSIC, European Union Reference Laboratory for African Swine Fever (EURL), Valdeolmos, Madrid, Spain
| | - Covadonga Pérez
- Centro de Investigación en Sanidad Animal, CISA, INIA-CSIC, European Union Reference Laboratory for African Swine Fever (EURL), Valdeolmos, Madrid, Spain
| | - Raquel Nieto
- Centro de Investigación en Sanidad Animal, CISA, INIA-CSIC, European Union Reference Laboratory for African Swine Fever (EURL), Valdeolmos, Madrid, Spain
| | - Marisa Arias
- Centro de Investigación en Sanidad Animal, CISA, INIA-CSIC, European Union Reference Laboratory for African Swine Fever (EURL), Valdeolmos, Madrid, Spain
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Walczak M, Frant M, Juszkiewicz M, Mazur-Panasiuk N, Szymankiewicz K, Bruczyńska M, Woźniakowski G. Vertical transmission of anti-ASFV antibodies as one of potential causes of seropositive results among young wild boar population in Poland. Pol J Vet Sci 2021; 23:21-25. [PMID: 32233289 DOI: 10.24425/pjvs.2019.131415] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The present study attempted to elucidate possible routes leading to the achievement of sero- positive results, among young (aged ≤1 year) wild boar population. In the years 2017-2018, the National Reference Laboratory (NRL) for African swine fever (ASF) in Poland examined nearly 27-thousand wild boar blood samples, collected during an active surveillance of ASF risk zones, for the presence of viral DNA and anti-ASFV antibodies. Out of all the examined samples, 420 were positive. However, in more than half of them (292 samples) antibodies against African swine fever virus (ASFV) were detected, while ASFV DNA was not detected in blood. Out of all 292 seropositive/PCR-negative samples, 126 belonged to young wild boars (aged ≤1 year). For this reason, the NRL in Poland has examined 10 selected seropositive wild boar carcasses to confirm or exclude post-mortem lesions for ASF as well as to investigate the presence of viral DNA in the internal organs. Neither pathological lesions for ASF nor the presence of genetic material of ASFV were found in the examined wild boars. To elucidate this outcomes, following hypotheses about possible reasons of the obtained results were drawn: the presence of convalescent animals, infection of low-virulent ASFV isolate and the vertical transmission of antibodies through the colostrum.
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Affiliation(s)
- M Walczak
- Department of Swine Diseases, National Veterinary Research Institute, Puławy, Poland
| | - M Frant
- Department of Swine Diseases, National Veterinary Research Institute, Puławy, Poland
| | - M Juszkiewicz
- Department of Swine Diseases, National Veterinary Research Institute, Puławy, Poland
| | - N Mazur-Panasiuk
- Department of Swine Diseases, National Veterinary Research Institute, Puławy, Poland
| | - K Szymankiewicz
- Department of Swine Diseases, National Veterinary Research Institute, Puławy, Poland
| | - M Bruczyńska
- Veterinary Inspectorate, Piaseczno District, Poland
| | - G Woźniakowski
- Department of Swine Diseases, National Veterinary Research Institute, Puławy, Poland
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Woźniakowski G, Mazur-Panasiuk N, Walczak M, Juszkiewicz M, Frant M, Niemczuk K. Attempts at the Development of a Recombinant African Swine Fever Virus Strain with Abrogated EP402R, 9GL, and A238L Gene Structure using the CRISPR/Cas9 System. J Vet Res 2020; 64:197-205. [PMID: 32587905 PMCID: PMC7305649 DOI: 10.2478/jvetres-2020-0039] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 05/25/2020] [Indexed: 12/31/2022] Open
Abstract
INTRODUCTION African swine fever (ASF) is a pressing economic problem in a number of Eastern European countries. It has also depleted the Chinese sow population by 50%. Managing the disease relies on culling infected pigs or hunting wild boars as sanitary zone creation. The constraints on the development of an efficient vaccine are mainly the virus' mechanisms of host immune response evasion. The study aimed to adapt a field ASFV strain to established cell lines and to construct recombinant African swine fever virus (ASFV) strain. MATERIAL AND METHODS The host immune response modulation genes A238L, EP402R, and 9GL were deleted using the clustered regularly interspaced short palindromic repeats/caspase 9 (CRISPR/Cas9) mutagenesis system. A representative virus isolate (Pol18/28298/Out111) from Poland was isolated in porcine primary pulmonary alveolar macrophage (PPAM) cells. Adaptation of the virus to a few established cell lines was attempted. The plasmids encoding CRISPR/Cas9 genes along with gRNA complementary to the target sequences were designed, synthesised, and transfected into ASFV-infected PPAM cells. RESULTS The reconstituted virus showed similar kinetics of replication in comparison to the parent virus isolate. CONCLUSION Taking into account the usefulness of the developed CRISPR/Cas9 system it has been shown that modification of the A238L, EP402R, and 9GL genes might occur with low frequency, resulting in difficulties in separation of various virus populations.
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Affiliation(s)
| | | | | | | | | | - Krzysztof Niemczuk
- Director General National Veterinary Research Institute, 24-100Puławy, Poland
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Pejsak Z, Niemczuk K, Frant M, Mazur M, Pomorska-Mól M, Ziętek-Barszcz A, Bocian Ł, Łyjak M, Borowska D, Woźniakowski G. Four years of African swine fever in Poland. New insights into epidemiology and prognosis of future disease spread. Pol J Vet Sci 2019; 21:835-841. [PMID: 30605293 DOI: 10.24425/pjvs.2018.125598] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Four and a half years of African Swine Fever (ASF) in population of free-ranging wild boars and domestic pigs revealed a number of novel insights into the disease epidemiology. Until No- vember 20th, 2018, in total 3048 cases in wild boars and 213 outbreaks in domestic pigs have been confirmed. In spite of low contagiosity as well as low rate of ASF spread in wild boars the disease has an enormous socio-economical impact on the production of pigs in Poland. One of the most important aspects which directly influences the dynamics of ASF spread is the unpredictable hu- man activity. Another important factor responsible for continuous ASF spread is fast recovery of wild boar population in spite of efforts taken by hunters. Assuming our scientific opinion ASF seems to be present in wildlife for the incoming few or several years. Therefore, extraordinary measures should be prepared and undertaken to limit the risk of the occurrence of future out- breaks in domestic pigs. One of the most crucial issues is implementation of strict biosecurity measures in all domestic pigs holdings.
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Affiliation(s)
- Z Pejsak
- Department of Swine Diseases, National Veterinary Research Institute, Partyzantów 57 Avenue, 24-100 Pulawy, Poland
| | - K Niemczuk
- Director General, National Veterinary Research Institute, Partyzantów 57 Avenue, 24-100 Pulawy, Poland
| | - M Frant
- Department of Swine Diseases, National Veterinary Research Institute, Partyzantów 57 Avenue, 24-100 Pulawy, Poland
| | - M Mazur
- Department of Swine Diseases, National Veterinary Research Institute, Partyzantów 57 Avenue, 24-100 Pulawy, Poland
| | - M Pomorska-Mól
- Department of Swine Diseases, National Veterinary Research Institute, Partyzantów 57 Avenue, 24-100 Pulawy, Poland
| | - A Ziętek-Barszcz
- Department of Epidemiology and Risk Asessment, National Veterinary Research Institute, Partyzantów 57 Avenue, 24-100 Pulawy, Poland
| | - Ł Bocian
- Department of Epidemiology and Risk Asessment, National Veterinary Research Institute, Partyzantów 57 Avenue, 24-100 Pulawy, Poland
| | - M Łyjak
- Department of Swine Diseases, National Veterinary Research Institute, Partyzantów 57 Avenue, 24-100 Pulawy, Poland
| | - D Borowska
- Department of Swine Diseases, National Veterinary Research Institute, Partyzantów 57 Avenue, 24-100 Pulawy, Poland
| | - G Woźniakowski
- Department of Swine Diseases, National Veterinary Research Institute, Partyzantów 57 Avenue, 24-100 Pulawy, Poland
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Frant M, Dayyoub E, Bakowsky U, Liefeith K. Evaluation of a ureteral catheter coating by means of a BioEncrustation in vitro model. Int J Pharm 2018; 546:86-96. [PMID: 29752980 DOI: 10.1016/j.ijpharm.2018.04.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 04/11/2018] [Accepted: 04/12/2018] [Indexed: 02/01/2023]
Abstract
Biomaterials for applications in the urinary tract are challenged with both biofilm formation and encrustation, two highly interconnected processes. While great effort has been achieved developing promising materials there is only a limited choice of sophisticated in vitro models that are available to analyse the performance of biomaterials prior to performing delicate and expensive in vivo studies. In this study we present a complex BioEncrustation model that imitates both the processes of multi-species biofilm formation and encrustation in vitro. The resulting crystalline biofilms are compared to the deposits found on explanted ureteral stent surfaces (in vivo situation) and to deposits formed in an experimental set up that does not contain bacteria (Encrustator®). Further focus of this study is dedicated to employing the developed BioEncrustation model to evaluate the effect multifunctional coatings impose on the processes of biofilm formation and encrustation under in vitro conditions. The investigated TANP coating combines unspecific and broad band specific antibacterial properties with a degrading polymer matrix that is intended to inhibit crystal formation. The coating was prepared on both polyurethane and silicone tubes and the subsequent results of the in vitro BioEncrustation analyses reveal a promising potential for employing the coating to render ureteral stent surfaces more biocompatible.
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Affiliation(s)
- M Frant
- Department of Biomaterials, Institute for Bioprocessing and Analytical Measurement Techniques e.V. (iba), Rosenhof, 37308 Heilbad Heiligenstadt, Germany
| | - E Dayyoub
- Department of Pharmaceutical Technology and Biopharmaceutics, Marburg University, 35037 Marburg, Germany
| | - U Bakowsky
- Department of Pharmaceutical Technology and Biopharmaceutics, Marburg University, 35037 Marburg, Germany
| | - K Liefeith
- Department of Biomaterials, Institute for Bioprocessing and Analytical Measurement Techniques e.V. (iba), Rosenhof, 37308 Heilbad Heiligenstadt, Germany.
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12
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Frant M, Woźniakowski G, Pejsak Z. African Swine Fever (ASF) and Ticks. No Risk of Tick-mediated ASF Spread in Poland and Baltic States. J Vet Res 2017; 61:375-380. [PMID: 29978098 PMCID: PMC5937333 DOI: 10.1515/jvetres-2017-0055] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 11/07/2017] [Indexed: 11/15/2022] Open
Abstract
Infectious diseases of swine, particularly zoonoses, have had a significant influence on nutritional safety and availability of pig meat as high-energy protein product since the time that pigs were domesticated back in the 7th century BC. The main sources of swine infectious diseases include the so-called primary sources (direct infection, i.e. through contact with infected and sick animals) and secondary sources (contaminated meat products, slaughter products, and vectors, including ticks). At present, the most serious epidemiological and economic threat to swine breeding in Europe is African swine fever (ASF). This disease, originally coming from Africa, is incurable and causes death of infected pigs and wild boars during 7−10 days after infection. Among the various factors that influence the spread of ASF, important role is played by ticks from the genus Ornithodoros, mainly from the species Ornithodoros moubata. Research on the ASF indicates that other species of ticks can also transmit the virus to healthy pigs in laboratory conditions. Sylvatic and domestic cycles of ASF virus transmission, which have been described so far, require further studies and updating in order to point the potential new vectors in the Caucasus and Eastern Europe affected by the ASF. Effective methods of control and biosecurity may significantly slow down the spread of ASF, which undoubtedly is a major threat to world pig production and international swine trade.
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Affiliation(s)
- Maciej Frant
- Department of Swine Diseases, National Veterinary Research Institute, 24-100 Puławy, Poland
| | - Grzegorz Woźniakowski
- Department of Swine Diseases, National Veterinary Research Institute, 24-100 Puławy, Poland
| | - Zygmunt Pejsak
- Department of Swine Diseases, National Veterinary Research Institute, 24-100 Puławy, Poland
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Paduch R, Trytek M, Król SK, Kud J, Frant M, Kandefer-Szerszeń M, Fiedurek J. Biological activity of terpene compounds produced by biotechnological methods. Pharm Biol 2016; 54:1096-107. [PMID: 26808720 DOI: 10.3109/13880209.2015.1103753] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
CONTEXT Biotransformation systems are profitable tools for structural modification of bioactive natural compounds into valuable biologically active terpenoids. OBJECTIVE This study determines the biological effect of (R)-(+)-limonene and (-)-α-pinene, and their oxygenated derivatives, (a) perillyl alcohol and (S)-(+)- and (R)-(-)-carvone enantiomers and (b) linalool, trans-verbenol and verbenone, respectively, on human colon tumour cells and normal colonic epithelium. MATERIALS AND METHODS Biotransformation procedures and in vitro cell culture tests were used in this work. Cells were incubated for 24 h with terpenes at concentrations of 5-500 μg/mL for NR, MTT, DPPH, and NO assays. IL-6 was determined by ELISA with/without 2 h pre-activation with 10 μg/mL LPS. RESULTS trans-Verbenol and perillyl alcohol, obtained via biotransformation, produced in vitro effect against tumour cells at lower concentrations (IC50 value = 77.8 and 98.8 μg/mL, respectively) than their monoterpene precursors, (R)-(+)-limonene (IC50 value = 171.4 μg/mL) and (-)-α-pinene (IC50 value = 206.3 μg/mL). They also showed lower cytotoxicity against normal cells (IC50 > 500 and > 200 μg/mL, respectively). (S)-(+)-Carvone was 59.4% and 27.1% more toxic to tumour and normal cells, respectively, than the (R)-(-)-enantiomer. (R)-(+)-limonene derivatives decreased IL-6 production from normal cells in media with or without LPS (30.2% and 13.9%, respectively), while (-)-α-pinene derivatives induced IL-6 (verbenone had the strongest effect, 60.2% and 29.1% above control, respectively). None of the terpenes had antioxidative activity below 500 μg/mL. DISCUSSION AND CONCLUSIONS Bioactivity against tumour cells decreased in the following order: alcohols > ketones > hydrocarbons. (R)-(+)-limonene, (-)-α-pinene, and their derivatives expressed diverse activity towards normal and tumour cells with noticeable enantiomeric differences.
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Affiliation(s)
- Roman Paduch
- a Department of Virology and Immunology , Institute of Microbiology and Biotechnology, Maria Curie-Skłodowska University , Lublin , Poland
| | - Mariusz Trytek
- b Department of Industrial Microbiology , Institute of Microbiology and Biotechnology, Maria Curie-Skłodowska University , Lublin , Poland
| | - Sylwia K Król
- a Department of Virology and Immunology , Institute of Microbiology and Biotechnology, Maria Curie-Skłodowska University , Lublin , Poland
| | - Joanna Kud
- a Department of Virology and Immunology , Institute of Microbiology and Biotechnology, Maria Curie-Skłodowska University , Lublin , Poland
| | - Maciej Frant
- a Department of Virology and Immunology , Institute of Microbiology and Biotechnology, Maria Curie-Skłodowska University , Lublin , Poland
| | - Martyna Kandefer-Szerszeń
- a Department of Virology and Immunology , Institute of Microbiology and Biotechnology, Maria Curie-Skłodowska University , Lublin , Poland
| | - Jan Fiedurek
- b Department of Industrial Microbiology , Institute of Microbiology and Biotechnology, Maria Curie-Skłodowska University , Lublin , Poland
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Frant M, Liefeith K, Jung F, Franke RP. [Correlation of physicochemical surface properties of various synthetic granulates with their hemocompatibility]. BIOMED ENG-BIOMED TE 1998; 43 Suppl:390-3. [PMID: 9859413 DOI: 10.1515/bmte.1998.43.s1.390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- M Frant
- Institut für Bioprozess- und Analysenmesstechnik, Heiligenstadt
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15
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Säuberlich S, Liefeith K, Frant M, Klee D, Richter EJ, Höcker H, Spiekermann H. [Characterization of the properties of differentially modified titanium surfaces for dental implantology. 2: In vitro biocompatibility studies]. BIOMED ENG-BIOMED TE 1998; 43:360-6. [PMID: 10036801 DOI: 10.1515/bmte.1998.43.12.360] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The aim of the present study was to determine whether specific surface modifications are capable of improving the biocompatibility of a titanium surface, and whether there is a correlation between the physico-chemical properties of the implant material and its biocompatibility. To this end, the properties of titanium surfaces were modified using various methods or the latter were coated with various materials. Plasma treatments under different atmospheric conditions (N2-plasma, SO2-plasma, acetylene plasma) as well as plasma polymerization were used to affect the biological response. Characterization of the physico-chemical surface properties by means of X-ray photoelectron spectroscopy (XPS), contact angle measurements and the calculation of surface tensions or surface energy provided important information on the interactions at the interface between the implant material and the aqueous environment. The influence of the respective surface modification on cell proliferation, cell viability and the activity of mitochondrial dehydrogenases was evaluated in specific in vitro tests with human gingiva fibroblasts. It was show that different modifications of the titanium samples induce different biological responses of the gingiva fibroblasts. The results confirm the existence of correlations between thermodynamic surface properties and cellular reactions under in vitro conditions.
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Affiliation(s)
- S Säuberlich
- Klinik für Zahnärztliche Prothetik des Klinikums, RWTH Aachen
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Liefeith K, Säuberlich S, Frant M, Klee D, Richter EJ, Höcker H, Spiekermann H. [Characterization of the properties of differently modified titanium surfaces for dental implantology. 1: Methods for surface analysis]. BIOMED ENG-BIOMED TE 1998; 43:330-5. [PMID: 9885420 DOI: 10.1515/bmte.1998.43.11.330] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Contact between the biological environment and biomaterials takes place at their surfaces. The biocompatibility of a material is determined by interactions at the interface between implant and biological system. The physicochemical surface properties of the materials used, for example, chemical composition, wettability, surface energy and electrical surface charge, therefore play an important role. Within the framework of the investigations described here, specific modifications of the surfaces properties of titanium are effected using various methods with the aim of achieving a positive influence on cell growth and cell attachment. To characterize the physicochemical surface properties, X-ray photoelectron spectroscopy (XPS) have been used. In addition to the clearly altered chemical composition of the modified material surface, it proved possible to determine significant changes in the thermodynamic properties with the aid of contact angle measurements and the determination of surface energy. On the basis of these results, important information about possible interactions at the interface between implant and tissue can be obtained.
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Affiliation(s)
- K Liefeith
- Institut für Bioprozess- und Analysenmesstechnik e. V., Heilbad Heiligenstadt
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