نتایج جستجو برای: postnatal exposure
تعداد نتایج: 336832 فیلتر نتایج به سال:
BACKGROUND Fish is an important source of nutrition worldwide. Fish contain both the neurotoxin methyl mercury (MeHg) and nutrients important for brain development. The developing brain appears to be most sensitive to MeHg toxicity and mothers who consume fish during pregnancy expose their fetus prenatally. Although brain development is most dramatic during fetal life, it continues for years po...
BACKGROUND Prenatal and postnatal exposure to bisphenol A (BPA) may affect early brain development. Rodent studies suggest that prenatal and postnatal neurodevelopmental toxicity from BPA exposure may manifest as social deficits in offspring. We investigated the association between prenatal and postnatal exposure to BPA and social impairments in a sample of 4-year-old children. METHODS We rec...
BACKGROUND Prenatal exposure to organophosphorous (OP) pesticides has been found to be associated with adverse effects on child neurodevelopment, but evidence on potential effects induced by both prenatal and postnatal OP exposure in infants is limited. OBJECTIVES Our aim was to investigate the associations of both prenatal and postnatal OP exposure with birth outcomes and infant neurodevelop...
the hypothesis is that recent and frequent exposure to lexical items leads to a more fluent production of speech in terms of rate of speech. to test the hypothesis,a one-way anova experimental design was carried out. 24 sednior students of efl participated in a one-way interview test. data analyses revealed that those who were exposed frequently to the lexical items over a week prior to inter...
Timing and Duration of Drug Exposure Affects Outcomes of a Drug-Nutrient Interaction During Ontogeny
Significant drug-nutrient interactions are possible when drugs and nutrients share the same absorption and disposition mechanisms. During postnatal development, the outcomes of drug-nutrient interactions may change with postnatal age since these processes undergo ontogenesis through the postnatal period. Our study investigated the dependence of a significant drug-nutrient interaction (cefepime-...
UNLABELLED Cardiac dysfunction occurs in infants with prenatal cocaine exposure, and gestational cocaine exposure induces presynaptic and postsynaptic changes in the central monoaminergic receptor pathways. The hypothesis of this study is that prenatal cocaine exposure adversely affects the peripheral adrenergic receptor (betaAR) signaling pathway in the neonatal rat heart. Timed pregnant rats ...
Fetal and early postnatal life represent critical periods in vertebrate immune system development. Disruption of such development by perinatal immunotoxic chemical exposure has been widely described in experimental animal models. The resultant inhibited postnatal immune responses in such animals are often more dramatic and persistent than those after exposure during adult life. Further, recent ...
Introduction: Several studies have reported anti-anxiety effects of morphine in adult rats. The present study examined the effect of chronic morphine injections in infancy and before puberty on anxiety-like behavior in immature rats. Methods: Neonate rats (n=35) were randomly chosen and divided into two groups. On postnatal days 8-14, one group received saline and the other one received mor...
Purpose: The purposet of the present study is to investigate the effects of Cadmium Chloride on absorption of embryos and macroscopic changes of morphyology,height and weight of neonatal and embryos of rats. Materials and Methods: 30 female Sprauge-dawley rats were used. They were classified in 6 quintet groups. On the 9th day of pregnancy, 2 mg/kg and 4 mg/kg Cadmium Chloride were injected in...
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