Antiamoebic Chemoprophylaxis Using Quinfamide in Children: A Comparative Study

This study sought to examine whether the administration of quinfamide at 3- or 6-month intervals diminished the frequency of Entamoeba histolytica cysts in stool samples compared to controls. The prospective, longitudinal, randomized, single-blind study examined children from six primary schools in...

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Main Authors: Nicolas Padilla, Rosalinda Diaz, Alfonso Alarcon, Roberto Barreda
Format: Article
Language:English
Published: Wiley 2002-01-01
Series:The Scientific World Journal
Online Access:http://dx.doi.org/10.1100/tsw.2002.174
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author Nicolas Padilla
Rosalinda Diaz
Alfonso Alarcon
Roberto Barreda
author_facet Nicolas Padilla
Rosalinda Diaz
Alfonso Alarcon
Roberto Barreda
author_sort Nicolas Padilla
collection DOAJ
description This study sought to examine whether the administration of quinfamide at 3- or 6-month intervals diminished the frequency of Entamoeba histolytica cysts in stool samples compared to controls. The prospective, longitudinal, randomized, single-blind study examined children from six primary schools in Celaya and Neutla, Guanajuato. Of the 1,524 students in these schools, we selected participants for the study as follows: Children were included in the study if their parents agreed in writing to the study and if the children demonstrated evidence of E. histolytica cysts after a parasitoscopic analysis by concentration (PSC) in three samples over consecutive days using Faust’s method. Those included in the study received a single 4.3-g/kg dose of quinfamide, and we performed PSC on days 5, 6, and 7 following dose administration to examine whether quinfamide had affected the presence of the cysts. The study participants who tested negative for cysts were divided into three groups: Group 1 had 102 patients who underwent quinfamide treatment and three CPS analyses after the 12 months of the study; Group 2 had 98 subjects who underwent the quinfamide treatment and three CPS analyses at months 3, 6, 9, and 12 after their entrance into the study; and Group 3 had 102 patients, who underwent the quinfamide treatment and series of three CPS analyses at months 6 and 12 of the study. All participants received the dose of quinfamide after providing stool samples and after a clinical gastrointestinal history was obtained. Further clinical gastrointestinal data were collected 5 days after the quintamide dose was administered. We used EpiInfo 6.0 for statistical analysis, calculating X2 and p values for the clinical data and the CPS data after the 12 months concluded. Of the initial samples of 1,524 subjects, 308 (20.2%) had Entamoebic cysts. Of these, six were further eliminated because they did not meet the inclusion requirements. At the conclusion of the study, Group 1 presented with 37.6% of subjects still testing positive for cysts; of Group 2, 12.5% tested positive; and in Group 3, 23.5% of participants tested positive for cysts (X2 = 16.8; df = 2; p = 0.0002). For comparisons of groups 1 and 2 and 1 and 3, p > 0.05. We conclude that antiamoebic chemoprophylaxis can be a choice for control of amoebic infection where personal hygiene and food consumption habits are not improving.
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spelling doaj-art-afb9a60228c14771865fa8f0097eba2c2025-02-03T01:31:42ZengWileyThe Scientific World Journal1537-744X2002-01-0121070107810.1100/tsw.2002.174Antiamoebic Chemoprophylaxis Using Quinfamide in Children: A Comparative StudyNicolas Padilla0Rosalinda Diaz1Alfonso Alarcon2Roberto Barreda3Unidad de Investigacion, Escuela de Enfermeria y Obstetricia de Celaya, Universidad de Guanajuato, Searle de Mexico, S.A. de C.V., MexicoUnidad de Investigacion, Escuela de Enfermeria y Obstetricia de Celaya, Universidad de Guanajuato, Searle de Mexico, S.A. de C.V., MexicoDirección Médica, Searle de Mexico, S.A. de C.V., MexicoDirección Médica, Searle de Mexico, S.A. de C.V., MexicoThis study sought to examine whether the administration of quinfamide at 3- or 6-month intervals diminished the frequency of Entamoeba histolytica cysts in stool samples compared to controls. The prospective, longitudinal, randomized, single-blind study examined children from six primary schools in Celaya and Neutla, Guanajuato. Of the 1,524 students in these schools, we selected participants for the study as follows: Children were included in the study if their parents agreed in writing to the study and if the children demonstrated evidence of E. histolytica cysts after a parasitoscopic analysis by concentration (PSC) in three samples over consecutive days using Faust’s method. Those included in the study received a single 4.3-g/kg dose of quinfamide, and we performed PSC on days 5, 6, and 7 following dose administration to examine whether quinfamide had affected the presence of the cysts. The study participants who tested negative for cysts were divided into three groups: Group 1 had 102 patients who underwent quinfamide treatment and three CPS analyses after the 12 months of the study; Group 2 had 98 subjects who underwent the quinfamide treatment and three CPS analyses at months 3, 6, 9, and 12 after their entrance into the study; and Group 3 had 102 patients, who underwent the quinfamide treatment and series of three CPS analyses at months 6 and 12 of the study. All participants received the dose of quinfamide after providing stool samples and after a clinical gastrointestinal history was obtained. Further clinical gastrointestinal data were collected 5 days after the quintamide dose was administered. We used EpiInfo 6.0 for statistical analysis, calculating X2 and p values for the clinical data and the CPS data after the 12 months concluded. Of the initial samples of 1,524 subjects, 308 (20.2%) had Entamoebic cysts. Of these, six were further eliminated because they did not meet the inclusion requirements. At the conclusion of the study, Group 1 presented with 37.6% of subjects still testing positive for cysts; of Group 2, 12.5% tested positive; and in Group 3, 23.5% of participants tested positive for cysts (X2 = 16.8; df = 2; p = 0.0002). For comparisons of groups 1 and 2 and 1 and 3, p > 0.05. We conclude that antiamoebic chemoprophylaxis can be a choice for control of amoebic infection where personal hygiene and food consumption habits are not improving.http://dx.doi.org/10.1100/tsw.2002.174
spellingShingle Nicolas Padilla
Rosalinda Diaz
Alfonso Alarcon
Roberto Barreda
Antiamoebic Chemoprophylaxis Using Quinfamide in Children: A Comparative Study
The Scientific World Journal
title Antiamoebic Chemoprophylaxis Using Quinfamide in Children: A Comparative Study
title_full Antiamoebic Chemoprophylaxis Using Quinfamide in Children: A Comparative Study
title_fullStr Antiamoebic Chemoprophylaxis Using Quinfamide in Children: A Comparative Study
title_full_unstemmed Antiamoebic Chemoprophylaxis Using Quinfamide in Children: A Comparative Study
title_short Antiamoebic Chemoprophylaxis Using Quinfamide in Children: A Comparative Study
title_sort antiamoebic chemoprophylaxis using quinfamide in children a comparative study
url http://dx.doi.org/10.1100/tsw.2002.174
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