Urine neopterin concentrations as a marker for successful blastocyst implantation after assisted reproductive technologies.
Reprod Biomed Online
; 20(5): 694-8, 2010 May.
Article
em En
| MEDLINE
| ID: mdl-20207585
ABSTRACT
Successful blastocyst implantation requires intricately orchestrated adaptation processes involving maternal and fetal mediators. The pivotal role of distinct immune response pathways in early pregnancy is widely acknowledged. Pro-inflammatory cytokines, e.g. interferon-gamma (IFN-gamma), are the primary inducers of tryptophan-degrading enzyme indoleamine 2,3-dioxygenase (IDO) and of neopterin biosynthesis by GTP-cyclohydrolase I. IDO activity has been proposed to be of high clinical relevance in the context of pregnancy. To date, insights arising from clinical studies on IDO activity and neopterin concentration during the very early days of pregnancy are still few. Early morning urinary neopterin concentrations in 61 women undergoing assisted reproduction treatment (72 cycles in total) were examined, upon exclusion of infections, daily over a period of 2 weeks after embryo transfer. Twenty of the study participants (28%) became successfully pregnant, and four women experienced abortion. Neopterin concentrations significantly increased after blastocyst transfer when implantation was successful (chi-squared=23.291, P<0.01; Friedman test), opposed to non-significant changes of neopterin in women with unsuccessful treatment (chi-squared=8.203). The steady increase of neopterin concentrations upon blastocyst transfer indicates that heightened production of neopterin in very early phases of pregnancy may serve as an early predictor of successfully progressing pregnancies in humans.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Implantação do Embrião
/
Biomarcadores
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Neopterina
/
Técnicas de Reprodução Assistida
Tipo de estudo:
Prognostic_studies
Limite:
Adult
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Female
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Humans
/
Pregnancy
Idioma:
En
Revista:
Reprod Biomed Online
Assunto da revista:
MEDICINA REPRODUTIVA
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Áustria