Rapid separation and identification of the subtypes of swine and equine influenza A viruses by electromigration techniques with UV and fluorometric detection
| Autor: | Marie Horká, Zuzana Kubíčková, Kateřina Rosenbergová, Karel Šlais, Oldřich Kubíček, Anna Kubesová |
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| Rok vydání: | 2011 |
| Předmět: |
Swine
Equine influenza Influenza A Virus H7N7 Subtype medicine.disease_cause 01 natural sciences Biochemistry Virus Analytical Chemistry 03 medical and health sciences Influenza A Virus H3N8 Subtype Capillary electrophoresis Influenza A Virus H1N1 Subtype Antigen Influenza A Virus H1N2 Subtype Electrochemistry Influenza A virus medicine Environmental Chemistry Animals Fluorometry Horses Spectroscopy Fluorescent Dyes 0303 health sciences 030306 microbiology Chemistry Isoelectric focusing 010401 analytical chemistry virus diseases Electrophoresis Capillary Hydrogen-Ion Concentration Virology Molecular biology 3. Good health 0104 chemical sciences Isoelectric point Polyvinyls Spectrophotometry Ultraviolet Viral disease Isoelectric Focusing Ethers |
| Zdroj: | The Analyst. 136(14) |
| ISSN: | 1364-5528 |
| Popis: | Influenza A is viral disease, which is a cause of yearly epidemics and, potentially, pandemics. The conventional techniques used today are equipment-demanding, time-consuming and laborious. Recently, we have confirmed that the capillary isoelectric focusing is a suitable fast alternative for the verifying of virus purity. In the wide pH gradient of pH range 2.0–7.5 the isoelectric points for subtypes of equine (H3N8) and swine (H1N2) influenza A viruses were determined approximately as 6.6 and 6.5, respectively. In this contribution we have verified these findings using different isolates of different viral subtypes of swine influenza, H1N1, H1N2, and of equine influenza, H3N8, H7N7, which were separated by capillary zone electrophoresis (CZE) and capillary isoelectric focusing (CIEF) in the narrow pH gradient pH range from 6.0 to 7.0. It was found that the isoelectric points of different isolates and subtypes of equine and swine influenza are almost independent of their origin. The electromigration velocities of subtypes of equine or swine influenza viruses were dependent on the antigenic subtypes of their surface glycoproteins. The detection sensitivity of the influenza viruses labeled by the fluorescent non-ionogenic tenside based on poly(ethylene glycol)pyrenebutanoate for fluorometric detection was increased and down to ten labeled viruses were detected. The isoelectric points of the native and labeled equine and swine influenza A viruses and their subtypes do not differ. According to our experiments these methods appear to be useful for the fast preliminary differentiation of influenza viruses in future. |
| Databáze: | OpenAIRE |
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