Postnatal development of rats exposed to fluoxetine or venlafaxine during the third week of pregnancy
Autor(a) principal: | |
---|---|
Data de Publicação: | 1999 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNIFESP |
Texto Completo: | http://dx.doi.org/10.1590/S0100-879X1999000100014 http://repositorio.unifesp.br/handle/11600/714 |
Resumo: | The aim of the present study was to compare the toxic effects of fluoxetine (F) (8 and 16 mg/kg) and venlafaxine (V) (40 and 80 mg/kg) administered during the third week of pregnancy on early development of rats. Both antidepressants were administered by gavage on pregnancy days 15 to 20 to groups of 10 to 12 animals each. Duration of gestation, food and water consumption, number of live pups and birth weight were recorded. Litters were culled to six pups at birth (day 1) and followed for growth until weaning (day 25). On day 60, a male and a female from each litter were injected with the 5-HT1 agonist, 5-methoxy-N,N-dimethyltryptamine (6 mg/kg, ip) and the serotonergic syndrome was graded. Fluoxetine but not venlafaxine reduced the duration of pregnancy when compared to the control (C) group (F = 21.1 days and C = 21.6 days, mean, P<0.02; maximum = 22 days and minimum = 21 days in both groups). The highest doses of both fluoxetine, 16 mg/kg (F16), and venlafaxine, 80 mg/kg (V80), reduced the food intake of pregnant rats, resulting in different rates of body weight gain during treatment (from pregnancy day 15 to day 20): F16 = 29.0 g, V80 = 28.7 g vs C = 39.5 g (median). Birth weight was influenced by treatment and sex (P<0.05; two-way ANOVA). Both doses of fluoxetine or venlafaxine reduced the body weight of litters; however, the body weight of litters from treated dams was equal to the weight of control litters by the time of weaning. At weaning there was no significant difference in weight between sexes. There was no difference among groups in number of live pups at birth, stillbirths, mortality during the lactation period or in the manifestation of serotonergic syndrome in adult rats. The occurrence of low birth weight among pups born to dams which did not show reduced food ingestion or reduction of body weight gain during treatment with lower doses of fluoxetine or venlafaxine suggests that these drugs may have a deleterious effect on prenatal development when administered during pregnancy. In addition, fluoxetine slightly but significantly affected the duration of pregnancy (about half a day), an effect not observed in the venlafaxine-treated groups. |
id |
UFSP_7b796a866c38e32b470b6c49226d5c05 |
---|---|
oai_identifier_str |
oai:repositorio.unifesp.br/:11600/714 |
network_acronym_str |
UFSP |
network_name_str |
Repositório Institucional da UNIFESP |
repository_id_str |
3465 |
spelling |
Postnatal development of rats exposed to fluoxetine or venlafaxine during the third week of pregnancydevelopmentfluoxetinevenlafaxineratsThe aim of the present study was to compare the toxic effects of fluoxetine (F) (8 and 16 mg/kg) and venlafaxine (V) (40 and 80 mg/kg) administered during the third week of pregnancy on early development of rats. Both antidepressants were administered by gavage on pregnancy days 15 to 20 to groups of 10 to 12 animals each. Duration of gestation, food and water consumption, number of live pups and birth weight were recorded. Litters were culled to six pups at birth (day 1) and followed for growth until weaning (day 25). On day 60, a male and a female from each litter were injected with the 5-HT1 agonist, 5-methoxy-N,N-dimethyltryptamine (6 mg/kg, ip) and the serotonergic syndrome was graded. Fluoxetine but not venlafaxine reduced the duration of pregnancy when compared to the control (C) group (F = 21.1 days and C = 21.6 days, mean, P<0.02; maximum = 22 days and minimum = 21 days in both groups). The highest doses of both fluoxetine, 16 mg/kg (F16), and venlafaxine, 80 mg/kg (V80), reduced the food intake of pregnant rats, resulting in different rates of body weight gain during treatment (from pregnancy day 15 to day 20): F16 = 29.0 g, V80 = 28.7 g vs C = 39.5 g (median). Birth weight was influenced by treatment and sex (P<0.05; two-way ANOVA). Both doses of fluoxetine or venlafaxine reduced the body weight of litters; however, the body weight of litters from treated dams was equal to the weight of control litters by the time of weaning. At weaning there was no significant difference in weight between sexes. There was no difference among groups in number of live pups at birth, stillbirths, mortality during the lactation period or in the manifestation of serotonergic syndrome in adult rats. The occurrence of low birth weight among pups born to dams which did not show reduced food ingestion or reduction of body weight gain during treatment with lower doses of fluoxetine or venlafaxine suggests that these drugs may have a deleterious effect on prenatal development when administered during pregnancy. In addition, fluoxetine slightly but significantly affected the duration of pregnancy (about half a day), an effect not observed in the venlafaxine-treated groups.Universidade Federal FluminenseUniversidade Federal de São Paulo (UNIFESP)UNIFESPSciELOAssociação Brasileira de Divulgação CientíficaUniversidade Federal FluminenseUniversidade Federal de São Paulo (UNIFESP)Da-silva, V.a.Altenburg, S.p.Malheiros, L.r.Thomaz, T.g.Lindsey, Charles Julian [UNIFESP]2015-06-14T13:24:49Z2015-06-14T13:24:49Z1999-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion93-98application/pdfhttp://dx.doi.org/10.1590/S0100-879X1999000100014Brazilian Journal of Medical and Biological Research. Associação Brasileira de Divulgação Científica, v. 32, n. 1, p. 93-98, 1999.10.1590/S0100-879X1999000100014S0100-879X1999000100014.pdf0100-879XS0100-879X1999000100014http://repositorio.unifesp.br/handle/11600/714WOS:000078324100014engBrazilian Journal of Medical and Biological Researchinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UNIFESPinstname:Universidade Federal de São Paulo (UNIFESP)instacron:UNIFESP2024-07-29T17:11:57Zoai:repositorio.unifesp.br/:11600/714Repositório InstitucionalPUBhttp://www.repositorio.unifesp.br/oai/requestbiblioteca.csp@unifesp.bropendoar:34652024-07-29T17:11:57Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP)false |
dc.title.none.fl_str_mv |
Postnatal development of rats exposed to fluoxetine or venlafaxine during the third week of pregnancy |
title |
Postnatal development of rats exposed to fluoxetine or venlafaxine during the third week of pregnancy |
spellingShingle |
Postnatal development of rats exposed to fluoxetine or venlafaxine during the third week of pregnancy Da-silva, V.a. development fluoxetine venlafaxine rats |
title_short |
Postnatal development of rats exposed to fluoxetine or venlafaxine during the third week of pregnancy |
title_full |
Postnatal development of rats exposed to fluoxetine or venlafaxine during the third week of pregnancy |
title_fullStr |
Postnatal development of rats exposed to fluoxetine or venlafaxine during the third week of pregnancy |
title_full_unstemmed |
Postnatal development of rats exposed to fluoxetine or venlafaxine during the third week of pregnancy |
title_sort |
Postnatal development of rats exposed to fluoxetine or venlafaxine during the third week of pregnancy |
author |
Da-silva, V.a. |
author_facet |
Da-silva, V.a. Altenburg, S.p. Malheiros, L.r. Thomaz, T.g. Lindsey, Charles Julian [UNIFESP] |
author_role |
author |
author2 |
Altenburg, S.p. Malheiros, L.r. Thomaz, T.g. Lindsey, Charles Julian [UNIFESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal Fluminense Universidade Federal de São Paulo (UNIFESP) |
dc.contributor.author.fl_str_mv |
Da-silva, V.a. Altenburg, S.p. Malheiros, L.r. Thomaz, T.g. Lindsey, Charles Julian [UNIFESP] |
dc.subject.por.fl_str_mv |
development fluoxetine venlafaxine rats |
topic |
development fluoxetine venlafaxine rats |
description |
The aim of the present study was to compare the toxic effects of fluoxetine (F) (8 and 16 mg/kg) and venlafaxine (V) (40 and 80 mg/kg) administered during the third week of pregnancy on early development of rats. Both antidepressants were administered by gavage on pregnancy days 15 to 20 to groups of 10 to 12 animals each. Duration of gestation, food and water consumption, number of live pups and birth weight were recorded. Litters were culled to six pups at birth (day 1) and followed for growth until weaning (day 25). On day 60, a male and a female from each litter were injected with the 5-HT1 agonist, 5-methoxy-N,N-dimethyltryptamine (6 mg/kg, ip) and the serotonergic syndrome was graded. Fluoxetine but not venlafaxine reduced the duration of pregnancy when compared to the control (C) group (F = 21.1 days and C = 21.6 days, mean, P<0.02; maximum = 22 days and minimum = 21 days in both groups). The highest doses of both fluoxetine, 16 mg/kg (F16), and venlafaxine, 80 mg/kg (V80), reduced the food intake of pregnant rats, resulting in different rates of body weight gain during treatment (from pregnancy day 15 to day 20): F16 = 29.0 g, V80 = 28.7 g vs C = 39.5 g (median). Birth weight was influenced by treatment and sex (P<0.05; two-way ANOVA). Both doses of fluoxetine or venlafaxine reduced the body weight of litters; however, the body weight of litters from treated dams was equal to the weight of control litters by the time of weaning. At weaning there was no significant difference in weight between sexes. There was no difference among groups in number of live pups at birth, stillbirths, mortality during the lactation period or in the manifestation of serotonergic syndrome in adult rats. The occurrence of low birth weight among pups born to dams which did not show reduced food ingestion or reduction of body weight gain during treatment with lower doses of fluoxetine or venlafaxine suggests that these drugs may have a deleterious effect on prenatal development when administered during pregnancy. In addition, fluoxetine slightly but significantly affected the duration of pregnancy (about half a day), an effect not observed in the venlafaxine-treated groups. |
publishDate |
1999 |
dc.date.none.fl_str_mv |
1999-01-01 2015-06-14T13:24:49Z 2015-06-14T13:24:49Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/S0100-879X1999000100014 Brazilian Journal of Medical and Biological Research. Associação Brasileira de Divulgação Científica, v. 32, n. 1, p. 93-98, 1999. 10.1590/S0100-879X1999000100014 S0100-879X1999000100014.pdf 0100-879X S0100-879X1999000100014 http://repositorio.unifesp.br/handle/11600/714 WOS:000078324100014 |
url |
http://dx.doi.org/10.1590/S0100-879X1999000100014 http://repositorio.unifesp.br/handle/11600/714 |
identifier_str_mv |
Brazilian Journal of Medical and Biological Research. Associação Brasileira de Divulgação Científica, v. 32, n. 1, p. 93-98, 1999. 10.1590/S0100-879X1999000100014 S0100-879X1999000100014.pdf 0100-879X S0100-879X1999000100014 WOS:000078324100014 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Brazilian Journal of Medical and Biological Research |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
93-98 application/pdf |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Divulgação Científica |
publisher.none.fl_str_mv |
Associação Brasileira de Divulgação Científica |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UNIFESP instname:Universidade Federal de São Paulo (UNIFESP) instacron:UNIFESP |
instname_str |
Universidade Federal de São Paulo (UNIFESP) |
instacron_str |
UNIFESP |
institution |
UNIFESP |
reponame_str |
Repositório Institucional da UNIFESP |
collection |
Repositório Institucional da UNIFESP |
repository.name.fl_str_mv |
Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP) |
repository.mail.fl_str_mv |
biblioteca.csp@unifesp.br |
_version_ |
1814268442080968704 |