Use of the aqueous biphasic system as an alternative for concentration of Ascaris lumbricoides eggs, with non-toxic separation of faecal residues and fats
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , , , , |
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 |
|
_version_ |
1808128736430653440 |