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Fibrinolysin production by Alcaligenes faecalis strain 26 isolated from environment

BACKGROUND AND OBJECTIVES: Fibrinolytic drugs are commonly used for fibrin clot lysis but due to their inappropriate side effects, as well as their high costs, using fibrinolytic enzymes has been paid attention. Bacterial sources of this enzyme are a good alternative for this purpose. The aim was fi...

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Autores principales: Nikkhoy, Zahra, Motamedi, Hossein
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Tehran University of Medical Sciences 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6829113/
https://www.ncbi.nlm.nih.gov/pubmed/31719965
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author Nikkhoy, Zahra
Motamedi, Hossein
author_facet Nikkhoy, Zahra
Motamedi, Hossein
author_sort Nikkhoy, Zahra
collection PubMed
description BACKGROUND AND OBJECTIVES: Fibrinolytic drugs are commonly used for fibrin clot lysis but due to their inappropriate side effects, as well as their high costs, using fibrinolytic enzymes has been paid attention. Bacterial sources of this enzyme are a good alternative for this purpose. The aim was fibrinolysin production through screening of fibrinolysin producing bacteria from environmental samples. MATERIALS AND METHODS: Bacterial isolation was performed from different environmental samples and was screened based on sheep blood clot digestion and culture on plasma plate. The most potent isolate was optimized for different growth parameters including temperature, pH and fibrinolysin production at optimum growth conditions. The stability of produced enzyme at various temperatures and pH and treatment with MgSO(4), NiSO(4), SDS and EDTA was then investigated. Finally this isolate was identified based on the 16S rRNA sequencing. RESULTS: As a result, from 79 different isolates, the most potent fibrinolysin producer was identified as Alcaligenes faecalis strain 26. This isolate produced 12 mm halo zone on plasma plate. Its optimum growth temperature and pH was 43°C and 7, respectively. The produced enzyme had the best stability at pH 7 and was also active up to 60°C. The fibrinolytic activity of this isolate was reduced following treatment with MgSO(4), NiSO(4) and also with protease inhibitors, such as SDS and EDTA. CONCLUSION: Based on the obtained results it can be suggested that Alcaligenes faecalis strain 26 has appropriate efficiency for fibrinolysin production that can be used in food industry and medicine.
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spelling pubmed-68291132019-11-12 Fibrinolysin production by Alcaligenes faecalis strain 26 isolated from environment Nikkhoy, Zahra Motamedi, Hossein Iran J Microbiol Original Article BACKGROUND AND OBJECTIVES: Fibrinolytic drugs are commonly used for fibrin clot lysis but due to their inappropriate side effects, as well as their high costs, using fibrinolytic enzymes has been paid attention. Bacterial sources of this enzyme are a good alternative for this purpose. The aim was fibrinolysin production through screening of fibrinolysin producing bacteria from environmental samples. MATERIALS AND METHODS: Bacterial isolation was performed from different environmental samples and was screened based on sheep blood clot digestion and culture on plasma plate. The most potent isolate was optimized for different growth parameters including temperature, pH and fibrinolysin production at optimum growth conditions. The stability of produced enzyme at various temperatures and pH and treatment with MgSO(4), NiSO(4), SDS and EDTA was then investigated. Finally this isolate was identified based on the 16S rRNA sequencing. RESULTS: As a result, from 79 different isolates, the most potent fibrinolysin producer was identified as Alcaligenes faecalis strain 26. This isolate produced 12 mm halo zone on plasma plate. Its optimum growth temperature and pH was 43°C and 7, respectively. The produced enzyme had the best stability at pH 7 and was also active up to 60°C. The fibrinolytic activity of this isolate was reduced following treatment with MgSO(4), NiSO(4) and also with protease inhibitors, such as SDS and EDTA. CONCLUSION: Based on the obtained results it can be suggested that Alcaligenes faecalis strain 26 has appropriate efficiency for fibrinolysin production that can be used in food industry and medicine. Tehran University of Medical Sciences 2019-08 /pmc/articles/PMC6829113/ /pubmed/31719965 Text en Copyright© 2019 Iranian Neuroscience Society http://creativecommons.org/licenses/by/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Nikkhoy, Zahra
Motamedi, Hossein
Fibrinolysin production by Alcaligenes faecalis strain 26 isolated from environment
title Fibrinolysin production by Alcaligenes faecalis strain 26 isolated from environment
title_full Fibrinolysin production by Alcaligenes faecalis strain 26 isolated from environment
title_fullStr Fibrinolysin production by Alcaligenes faecalis strain 26 isolated from environment
title_full_unstemmed Fibrinolysin production by Alcaligenes faecalis strain 26 isolated from environment
title_short Fibrinolysin production by Alcaligenes faecalis strain 26 isolated from environment
title_sort fibrinolysin production by alcaligenes faecalis strain 26 isolated from environment
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6829113/
https://www.ncbi.nlm.nih.gov/pubmed/31719965
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