Use of the aqueous biphasic system as an alternative for concentration of Ascaris lumbricoides eggs, with non-toxic separation of faecal residues and fats

Detalhes bibliográficos
Autor(a) principal: Rosa, Stefany Laryssa
Data de Publicação: 2019
Outros Autores: Santos, Bianca Martins dos, Soares, Felipe Augusto, Nery Loiola, Saulo Hudson, Inacio, Sandra Valeria [UNESP], Nagase Suzuki, Celso Tetsuo, Sabadini, Edvaldo, Falcao, Alexandre Xavier, Saraiva Bresciani, Katia Denise [UNESP], Gomes, Jancarlo Ferreira
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1111/tmi.13308
http://hdl.handle.net/11449/194957
Resumo: Objectives Human enteroparasites are considered a serious public health problem in underdeveloped countries located in world regions with tropical, subtropical and equatorial climates. These parasites are commonly diagnosed by the Parasitological Examination of Faeces (PEF), performed by conventional techniques and/or commercial kits that result in tests with low-to-moderate sensitivity, due to the use of destructive chemical solvents to parasite structures, and to present excess adipose substance and digestive residues in their microscopic slides. In order to improve the efficacy of these tests/examinations, this study aimed to investigate a new alternative for the PEF, with the use of Aqueous Biphasic System (ABS). Methods For this, four ABSs containing poly (ethylene glycol), PEG (PEG-4000 and PEG-6000), dipotassium phosphate and sodium citrate at different concentrations in the biphasic systems were evaluated with faecal samples containing eggs of Ascaris lumbricoides. Results The ABS consisting of PEG-4000 and dipotassium phosphate, at concentrations of 55% w/w and 20% w/w, respectively, achieved 100% satisfactory results compared to the conventional TF-Test technique in terms of preservation and concentration of A. lumbricoides eggs, with adequate separation of digestive residues, without using a centrifuge or chemical solvents that may cause harm to the parasites. Conclusions This study presents ABS as a new low-cost technical principle for the detection of parasite eggs in PEF. The new technique is simple, fast, non-toxic, not harmful to the parasite and does not require a centrifuge.
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spelling Use of the aqueous biphasic system as an alternative for concentration of Ascaris lumbricoides eggs, with non-toxic separation of faecal residues and fatsenteroparasitesaqueous biphasic systemdiagnosisObjectives Human enteroparasites are considered a serious public health problem in underdeveloped countries located in world regions with tropical, subtropical and equatorial climates. These parasites are commonly diagnosed by the Parasitological Examination of Faeces (PEF), performed by conventional techniques and/or commercial kits that result in tests with low-to-moderate sensitivity, due to the use of destructive chemical solvents to parasite structures, and to present excess adipose substance and digestive residues in their microscopic slides. In order to improve the efficacy of these tests/examinations, this study aimed to investigate a new alternative for the PEF, with the use of Aqueous Biphasic System (ABS). Methods For this, four ABSs containing poly (ethylene glycol), PEG (PEG-4000 and PEG-6000), dipotassium phosphate and sodium citrate at different concentrations in the biphasic systems were evaluated with faecal samples containing eggs of Ascaris lumbricoides. Results The ABS consisting of PEG-4000 and dipotassium phosphate, at concentrations of 55% w/w and 20% w/w, respectively, achieved 100% satisfactory results compared to the conventional TF-Test technique in terms of preservation and concentration of A. lumbricoides eggs, with adequate separation of digestive residues, without using a centrifuge or chemical solvents that may cause harm to the parasites. Conclusions This study presents ABS as a new low-cost technical principle for the detection of parasite eggs in PEF. The new technique is simple, fast, non-toxic, not harmful to the parasite and does not require a centrifuge.Univ Estadual Campinas, Sch Med Sci, Rua Saturnino Brito,573,Room 364, BR-13083852 Campinas, SP, BrazilSao Paulo State Univ, Sch Vet Med, Sao Paulo, BrazilUniv Estadual Campinas, Inst Comp, Campinas, SP, BrazilUniv Estadual Campinas, Inst Chem, Campinas, SP, BrazilSao Paulo State Univ, Sch Vet Med, Sao Paulo, BrazilWiley-BlackwellUniversidade Estadual de Campinas (UNICAMP)Universidade Estadual Paulista (Unesp)Rosa, Stefany LaryssaSantos, Bianca Martins dosSoares, Felipe AugustoNery Loiola, Saulo HudsonInacio, Sandra Valeria [UNESP]Nagase Suzuki, Celso TetsuoSabadini, EdvaldoFalcao, Alexandre XavierSaraiva Bresciani, Katia Denise [UNESP]Gomes, Jancarlo Ferreira2020-12-10T16:59:52Z2020-12-10T16:59:52Z2019-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1320-1329http://dx.doi.org/10.1111/tmi.13308Tropical Medicine & International Health. Hoboken: Wiley, v. 24, n. 11, p. 1320-1329, 2019.1360-2276http://hdl.handle.net/11449/19495710.1111/tmi.13308WOS:000495436700006Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengTropical Medicine & International Healthinfo:eu-repo/semantics/openAccess2021-10-23T03:03:26Zoai:repositorio.unesp.br:11449/194957Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:00:14.591752Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Use of the aqueous biphasic system as an alternative for concentration of Ascaris lumbricoides eggs, with non-toxic separation of faecal residues and fats
title Use of the aqueous biphasic system as an alternative for concentration of Ascaris lumbricoides eggs, with non-toxic separation of faecal residues and fats
spellingShingle Use of the aqueous biphasic system as an alternative for concentration of Ascaris lumbricoides eggs, with non-toxic separation of faecal residues and fats
Rosa, Stefany Laryssa
enteroparasites
aqueous biphasic system
diagnosis
title_short Use of the aqueous biphasic system as an alternative for concentration of Ascaris lumbricoides eggs, with non-toxic separation of faecal residues and fats
title_full Use of the aqueous biphasic system as an alternative for concentration of Ascaris lumbricoides eggs, with non-toxic separation of faecal residues and fats
title_fullStr Use of the aqueous biphasic system as an alternative for concentration of Ascaris lumbricoides eggs, with non-toxic separation of faecal residues and fats
title_full_unstemmed Use of the aqueous biphasic system as an alternative for concentration of Ascaris lumbricoides eggs, with non-toxic separation of faecal residues and fats
title_sort Use of the aqueous biphasic system as an alternative for concentration of Ascaris lumbricoides eggs, with non-toxic separation of faecal residues and fats
author Rosa, Stefany Laryssa
author_facet Rosa, Stefany Laryssa
Santos, Bianca Martins dos
Soares, Felipe Augusto
Nery Loiola, Saulo Hudson
Inacio, Sandra Valeria [UNESP]
Nagase Suzuki, Celso Tetsuo
Sabadini, Edvaldo
Falcao, Alexandre Xavier
Saraiva Bresciani, Katia Denise [UNESP]
Gomes, Jancarlo Ferreira
author_role author
author2 Santos, Bianca Martins dos
Soares, Felipe Augusto
Nery Loiola, Saulo Hudson
Inacio, Sandra Valeria [UNESP]
Nagase Suzuki, Celso Tetsuo
Sabadini, Edvaldo
Falcao, Alexandre Xavier
Saraiva Bresciani, Katia Denise [UNESP]
Gomes, Jancarlo Ferreira
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual de Campinas (UNICAMP)
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Rosa, Stefany Laryssa
Santos, Bianca Martins dos
Soares, Felipe Augusto
Nery Loiola, Saulo Hudson
Inacio, Sandra Valeria [UNESP]
Nagase Suzuki, Celso Tetsuo
Sabadini, Edvaldo
Falcao, Alexandre Xavier
Saraiva Bresciani, Katia Denise [UNESP]
Gomes, Jancarlo Ferreira
dc.subject.por.fl_str_mv enteroparasites
aqueous biphasic system
diagnosis
topic enteroparasites
aqueous biphasic system
diagnosis
description Objectives Human enteroparasites are considered a serious public health problem in underdeveloped countries located in world regions with tropical, subtropical and equatorial climates. These parasites are commonly diagnosed by the Parasitological Examination of Faeces (PEF), performed by conventional techniques and/or commercial kits that result in tests with low-to-moderate sensitivity, due to the use of destructive chemical solvents to parasite structures, and to present excess adipose substance and digestive residues in their microscopic slides. In order to improve the efficacy of these tests/examinations, this study aimed to investigate a new alternative for the PEF, with the use of Aqueous Biphasic System (ABS). Methods For this, four ABSs containing poly (ethylene glycol), PEG (PEG-4000 and PEG-6000), dipotassium phosphate and sodium citrate at different concentrations in the biphasic systems were evaluated with faecal samples containing eggs of Ascaris lumbricoides. Results The ABS consisting of PEG-4000 and dipotassium phosphate, at concentrations of 55% w/w and 20% w/w, respectively, achieved 100% satisfactory results compared to the conventional TF-Test technique in terms of preservation and concentration of A. lumbricoides eggs, with adequate separation of digestive residues, without using a centrifuge or chemical solvents that may cause harm to the parasites. Conclusions This study presents ABS as a new low-cost technical principle for the detection of parasite eggs in PEF. The new technique is simple, fast, non-toxic, not harmful to the parasite and does not require a centrifuge.
publishDate 2019
dc.date.none.fl_str_mv 2019-11-01
2020-12-10T16:59:52Z
2020-12-10T16:59:52Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1111/tmi.13308
Tropical Medicine & International Health. Hoboken: Wiley, v. 24, n. 11, p. 1320-1329, 2019.
1360-2276
http://hdl.handle.net/11449/194957
10.1111/tmi.13308
WOS:000495436700006
url http://dx.doi.org/10.1111/tmi.13308
http://hdl.handle.net/11449/194957
identifier_str_mv Tropical Medicine & International Health. Hoboken: Wiley, v. 24, n. 11, p. 1320-1329, 2019.
1360-2276
10.1111/tmi.13308
WOS:000495436700006
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Tropical Medicine & International Health
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1320-1329
dc.publisher.none.fl_str_mv Wiley-Blackwell
publisher.none.fl_str_mv Wiley-Blackwell
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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