Neural tube defects: Sex ratio changes after fortification with folic acid

Autores
Poletta, Fernando Adrián; Rittler, Monica; Saleme, Cesar; Campaña, Hebe; Gili, Juan Antonio; Pawluk, Mariela Soledad; Gimenez, Lucas Gabriel; Cosentino, Viviana Raquel; Castilla, Eduardo Enrique; López Camelo, Jorge Santiago
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Background: Historically, neural tube defects (NTDs) have predominated in female infants but the reasons remain unclear. In South America, the pre-folic acid fortification (FAF) rates of NTDs were around 18/10,000 births for females and 12/10,000 births for males, with an estimated sex ratio (male/female) of 0.67. During the post-FAF period, unpublished routine reports have indicated changes in the sex ratio for these defects while some descriptive reports are controversial. To date and to our knowledge, however, no studies specifically focusing on these changes to test this hypothesis directly have been undertaken. The aim of this study was to analyze changes in the sex ratio of infants with NTDs after FAF in South American countries. Materials and methods: With a descriptive cross-sectional study design, 2,597 infants with isolated NTDs born between 1990 and 2013 in 3 countries participating in the Latin American Collaborative Study of Congenital Malformations (ECLAMC) network were included: (Chile N = 521 and Argentina N = 1,619 [with FAF policies]; Venezuela N = 457 [without FAF policies; used as control]; total births = 2,229,561). The differences-in-differences method and Poisson regressions were used to evaluate the sex ratio shift from female to male before vs. after FAF, and to assess whether these differences were related to the fortification. Results and conclusions: In Chile and Argentina the prevalence of NTDs, particularly anencephaly and cervico-tho-racic spina bifida, showed a greater reduction rate in females than in males after FAF, resulting in a change of the sex ratio of infants with NTDs. Some mechanisms possibly involved in this differential reduction are proposed which might be useful to identify the pathogenesis of NTDs as a whole and specifically of those susceptible to the protective effect of folic acid.
Fil: Poletta, Fernando Adrián. Ciudad Autónoma de Buenos Aires. Hospital Materno Infantil “Ramón Sardá”; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; Argentina
Fil: Rittler, Monica. Ciudad Autónoma de Buenos Aires. Hospital Materno Infantil “Ramón Sardá”; Argentina
Fil: Saleme, Cesar. Ciudad Autónoma de Buenos Aires. Hospital Materno Infantil “Ramón Sardá”; Argentina
Fil: Campaña, Hebe. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; Argentina
Fil: Gili, Juan Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; Argentina
Fil: Pawluk, Mariela Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; Argentina
Fil: Gimenez, Lucas Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; Argentina
Fil: Cosentino, Viviana Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; Argentina
Fil: Castilla, Eduardo Enrique. Ciudad Autónoma de Buenos Aires. Hospital Materno Infantil “Ramón Sardá”; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; Argentina
Fil: López Camelo, Jorge Santiago. Ciudad Autónoma de Buenos Aires. Hospital Materno Infantil “Ramón Sardá”; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; Argentina
Materia
Neural tube defects
Sex ratio
Folic acid
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/86507
Acceder
id CONICETDig_c813cc68979c78712394435cbb666418
oai_identifier_str oai:ri.conicet.gov.ar:11336/86507
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Neural tube defects: Sex ratio changes after fortification with folic acidPoletta, Fernando AdriánRittler, MonicaSaleme, CesarCampaña, HebeGili, Juan AntonioPawluk, Mariela SoledadGimenez, Lucas GabrielCosentino, Viviana RaquelCastilla, Eduardo EnriqueLópez Camelo, Jorge SantiagoNeural tube defectsSex ratioFolic acidhttps://purl.org/becyt/ford/3.3https://purl.org/becyt/ford/3Background: Historically, neural tube defects (NTDs) have predominated in female infants but the reasons remain unclear. In South America, the pre-folic acid fortification (FAF) rates of NTDs were around 18/10,000 births for females and 12/10,000 births for males, with an estimated sex ratio (male/female) of 0.67. During the post-FAF period, unpublished routine reports have indicated changes in the sex ratio for these defects while some descriptive reports are controversial. To date and to our knowledge, however, no studies specifically focusing on these changes to test this hypothesis directly have been undertaken. The aim of this study was to analyze changes in the sex ratio of infants with NTDs after FAF in South American countries. Materials and methods: With a descriptive cross-sectional study design, 2,597 infants with isolated NTDs born between 1990 and 2013 in 3 countries participating in the Latin American Collaborative Study of Congenital Malformations (ECLAMC) network were included: (Chile N = 521 and Argentina N = 1,619 [with FAF policies]; Venezuela N = 457 [without FAF policies; used as control]; total births = 2,229,561). The differences-in-differences method and Poisson regressions were used to evaluate the sex ratio shift from female to male before vs. after FAF, and to assess whether these differences were related to the fortification. Results and conclusions: In Chile and Argentina the prevalence of NTDs, particularly anencephaly and cervico-tho-racic spina bifida, showed a greater reduction rate in females than in males after FAF, resulting in a change of the sex ratio of infants with NTDs. Some mechanisms possibly involved in this differential reduction are proposed which might be useful to identify the pathogenesis of NTDs as a whole and specifically of those susceptible to the protective effect of folic acid.Fil: Poletta, Fernando Adrián. Ciudad Autónoma de Buenos Aires. Hospital Materno Infantil “Ramón Sardá”; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; ArgentinaFil: Rittler, Monica. Ciudad Autónoma de Buenos Aires. Hospital Materno Infantil “Ramón Sardá”; ArgentinaFil: Saleme, Cesar. Ciudad Autónoma de Buenos Aires. Hospital Materno Infantil “Ramón Sardá”; ArgentinaFil: Campaña, Hebe. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; ArgentinaFil: Gili, Juan Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; ArgentinaFil: Pawluk, Mariela Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; ArgentinaFil: Gimenez, Lucas Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; ArgentinaFil: Cosentino, Viviana Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; ArgentinaFil: Castilla, Eduardo Enrique. Ciudad Autónoma de Buenos Aires. Hospital Materno Infantil “Ramón Sardá”; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; ArgentinaFil: López Camelo, Jorge Santiago. Ciudad Autónoma de Buenos Aires. Hospital Materno Infantil “Ramón Sardá”; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; ArgentinaPublic Library of Science2018-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/86507Poletta, Fernando Adrián; Rittler, Monica; Saleme, Cesar; Campaña, Hebe; Gili, Juan Antonio; et al.; Neural tube defects: Sex ratio changes after fortification with folic acid; Public Library of Science; Plos One; 13; 3; 3-2018; 1-12; e01931271932-6203CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0193127info:eu-repo/semantics/altIdentifier/url/https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0193127info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:19:38Zoai:ri.conicet.gov.ar:11336/86507instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:19:38.44CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Neural tube defects: Sex ratio changes after fortification with folic acid
title Neural tube defects: Sex ratio changes after fortification with folic acid
spellingShingle Neural tube defects: Sex ratio changes after fortification with folic acid
Poletta, Fernando Adrián
Neural tube defects
Sex ratio
Folic acid
title_short Neural tube defects: Sex ratio changes after fortification with folic acid
title_full Neural tube defects: Sex ratio changes after fortification with folic acid
title_fullStr Neural tube defects: Sex ratio changes after fortification with folic acid
title_full_unstemmed Neural tube defects: Sex ratio changes after fortification with folic acid
title_sort Neural tube defects: Sex ratio changes after fortification with folic acid
dc.creator.none.fl_str_mv Poletta, Fernando Adrián
Rittler, Monica
Saleme, Cesar
Campaña, Hebe
Gili, Juan Antonio
Pawluk, Mariela Soledad
Gimenez, Lucas Gabriel
Cosentino, Viviana Raquel
Castilla, Eduardo Enrique
López Camelo, Jorge Santiago
author Poletta, Fernando Adrián
author_facet Poletta, Fernando Adrián
Rittler, Monica
Saleme, Cesar
Campaña, Hebe
Gili, Juan Antonio
Pawluk, Mariela Soledad
Gimenez, Lucas Gabriel
Cosentino, Viviana Raquel
Castilla, Eduardo Enrique
López Camelo, Jorge Santiago
author_role author
author2 Rittler, Monica
Saleme, Cesar
Campaña, Hebe
Gili, Juan Antonio
Pawluk, Mariela Soledad
Gimenez, Lucas Gabriel
Cosentino, Viviana Raquel
Castilla, Eduardo Enrique
López Camelo, Jorge Santiago
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Neural tube defects
Sex ratio
Folic acid
topic Neural tube defects
Sex ratio
Folic acid
purl_subject.fl_str_mv https://purl.org/becyt/ford/3.3
https://purl.org/becyt/ford/3
dc.description.none.fl_txt_mv Background: Historically, neural tube defects (NTDs) have predominated in female infants but the reasons remain unclear. In South America, the pre-folic acid fortification (FAF) rates of NTDs were around 18/10,000 births for females and 12/10,000 births for males, with an estimated sex ratio (male/female) of 0.67. During the post-FAF period, unpublished routine reports have indicated changes in the sex ratio for these defects while some descriptive reports are controversial. To date and to our knowledge, however, no studies specifically focusing on these changes to test this hypothesis directly have been undertaken. The aim of this study was to analyze changes in the sex ratio of infants with NTDs after FAF in South American countries. Materials and methods: With a descriptive cross-sectional study design, 2,597 infants with isolated NTDs born between 1990 and 2013 in 3 countries participating in the Latin American Collaborative Study of Congenital Malformations (ECLAMC) network were included: (Chile N = 521 and Argentina N = 1,619 [with FAF policies]; Venezuela N = 457 [without FAF policies; used as control]; total births = 2,229,561). The differences-in-differences method and Poisson regressions were used to evaluate the sex ratio shift from female to male before vs. after FAF, and to assess whether these differences were related to the fortification. Results and conclusions: In Chile and Argentina the prevalence of NTDs, particularly anencephaly and cervico-tho-racic spina bifida, showed a greater reduction rate in females than in males after FAF, resulting in a change of the sex ratio of infants with NTDs. Some mechanisms possibly involved in this differential reduction are proposed which might be useful to identify the pathogenesis of NTDs as a whole and specifically of those susceptible to the protective effect of folic acid.
Fil: Poletta, Fernando Adrián. Ciudad Autónoma de Buenos Aires. Hospital Materno Infantil “Ramón Sardá”; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; Argentina
Fil: Rittler, Monica. Ciudad Autónoma de Buenos Aires. Hospital Materno Infantil “Ramón Sardá”; Argentina
Fil: Saleme, Cesar. Ciudad Autónoma de Buenos Aires. Hospital Materno Infantil “Ramón Sardá”; Argentina
Fil: Campaña, Hebe. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; Argentina
Fil: Gili, Juan Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; Argentina
Fil: Pawluk, Mariela Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; Argentina
Fil: Gimenez, Lucas Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; Argentina
Fil: Cosentino, Viviana Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; Argentina
Fil: Castilla, Eduardo Enrique. Ciudad Autónoma de Buenos Aires. Hospital Materno Infantil “Ramón Sardá”; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; Argentina
Fil: López Camelo, Jorge Santiago. Ciudad Autónoma de Buenos Aires. Hospital Materno Infantil “Ramón Sardá”; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. CEMIC-CONICET. Centro de Educaciones Médicas e Investigaciones Clínicas "Norberto Quirno". CEMIC-CONICET; Argentina
description Background: Historically, neural tube defects (NTDs) have predominated in female infants but the reasons remain unclear. In South America, the pre-folic acid fortification (FAF) rates of NTDs were around 18/10,000 births for females and 12/10,000 births for males, with an estimated sex ratio (male/female) of 0.67. During the post-FAF period, unpublished routine reports have indicated changes in the sex ratio for these defects while some descriptive reports are controversial. To date and to our knowledge, however, no studies specifically focusing on these changes to test this hypothesis directly have been undertaken. The aim of this study was to analyze changes in the sex ratio of infants with NTDs after FAF in South American countries. Materials and methods: With a descriptive cross-sectional study design, 2,597 infants with isolated NTDs born between 1990 and 2013 in 3 countries participating in the Latin American Collaborative Study of Congenital Malformations (ECLAMC) network were included: (Chile N = 521 and Argentina N = 1,619 [with FAF policies]; Venezuela N = 457 [without FAF policies; used as control]; total births = 2,229,561). The differences-in-differences method and Poisson regressions were used to evaluate the sex ratio shift from female to male before vs. after FAF, and to assess whether these differences were related to the fortification. Results and conclusions: In Chile and Argentina the prevalence of NTDs, particularly anencephaly and cervico-tho-racic spina bifida, showed a greater reduction rate in females than in males after FAF, resulting in a change of the sex ratio of infants with NTDs. Some mechanisms possibly involved in this differential reduction are proposed which might be useful to identify the pathogenesis of NTDs as a whole and specifically of those susceptible to the protective effect of folic acid.
publishDate 2018
dc.date.none.fl_str_mv 2018-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/86507
Poletta, Fernando Adrián; Rittler, Monica; Saleme, Cesar; Campaña, Hebe; Gili, Juan Antonio; et al.; Neural tube defects: Sex ratio changes after fortification with folic acid; Public Library of Science; Plos One; 13; 3; 3-2018; 1-12; e0193127
1932-6203
CONICET Digital
CONICET
url http://hdl.handle.net/11336/86507
identifier_str_mv Poletta, Fernando Adrián; Rittler, Monica; Saleme, Cesar; Campaña, Hebe; Gili, Juan Antonio; et al.; Neural tube defects: Sex ratio changes after fortification with folic acid; Public Library of Science; Plos One; 13; 3; 3-2018; 1-12; e0193127
1932-6203
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
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info:eu-repo/semantics/altIdentifier/url/https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0193127
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Public Library of Science
publisher.none.fl_str_mv Public Library of Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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