47 research outputs found

    The realtionship between common patterns of prenatal alcohol exposure and the neurodevelopment of two-year old children

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    Background: Around 60% of women drink some alcohol while pregnant. There is conflicting evidence on the effect on the fetus of common patterns of prenatal alcohol exposure (PAE) e.g. low level or sporadic drinking. Guidelines recommend abstinence as the safest option, creating problems for those advising women who drink at these levels before pregnancy recognition or beyond. The Asking QUestions about Alcohol (AQUA) study aimed to accurately measure PAE and account for important cofactors, to reduce uncertainty about child outcomes. Method: Detailed data on PAE were prospectively collected in a pre-birth cohort of over 1500 mother/child dyads. There was also extensive data collection of predictors of child development at one and two-year's post-partum. A sub-group of children was followed up at two years of age with a neurodevelopmental assessment (Bayley III). Two-step multivariable regression analyses of an effect of PAE accounted for independent risk factors that related to 1) pregnancy, including sociodemographic, psychologic and lifestyle variables such as diet and supplement use, and 2) the postnatal care-giving environment, including breastfeeding and maternal psychological wellbeing. Results: Adjustment for independent risk factors ameliorated any putative associations between PAE and cognitive, language and motor development in 554 two year-old children spread evenly across six PAE groups. Conclusions: Assessing neurodevelopmental outcomes associated with PAE is strongly influenced by other modifiable and non-modifiable risk factors. Although we found no adverse neurodevelopmental outcomes at two years of age, follow-up will be necessary in these children when complex higher-level cognitive, language and motor skills are required

    Prenatal alcohol exposure and facial shape of one-year old children: no amount of alcohol is without consequence

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    Background: Children with Fetal Alcohol Spectrum Disorder (FASD) can have a characteristic facial appearance in addition to neurodevelopmental impairment. We do not know if there is a gradient of effects on the face of children with prenatal alcohol exposure (PAE). Method: This is an analysis of 3D craniofacial images of 415 one year-old Caucasian children with detailed, prospectively collected PAE data. Analysis involved objective, holistic craniofacial phenotyping applying partial least-square regression to dense-surface models of the facial images. Results: We saw a significant association between craniofacial shape and PAE, whether exposure occurred only in trimester one, or throughout pregnancy. Regions of difference (p < 0.05) were concentrated around the mid-face, nose, lips and eyes. Directional visualisation showed these corresponded to general recession of the midface and superior displacement of the nose, especially the tip of the nose, indicating shortening of the nose and upturning of the nose tip. Significant differences existed between groups with no exposure and groups with low exposure in trimester one (forehead), moderate/high exposure in trimester one (eyes, midface, chin, parietal region) and binge level exposure in trimester one (chin). Conclusion: PAE, even at low levels, can influence craniofacial development. The observed differences were subtle, but are typical of dysmorphic features often seen in children with FASD. Although facial development is complex and each person's face is unique, it is sensitive to some influences at critical stages of development. Our study shows that alcohol contributes to how the face is formed in the womb

    Women's knowledge and attitudes regarding alcohol consumption in pregnancy: a national survey

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    Background. Alcohol exposure in pregnancy is a common and modifiable risk factor for poor pregnancy and child outcomes. Alcohol exposure in pregnancy can cause a range of physical and neurodevelopmental problems in the child including the Fetal Alcohol Spectrum Disorders (FASD). In order to improve prevention strategies, we sought to describe the knowledge and attitudes of women of childbearing age regarding alcohol consumption during pregnancy and its effects on the fetus.Methods. We conducted a national cross-sectional survey via computer assisted telephone interview of 1103 Australian women aged 18 to 45 years. Participants were randomly selected from the Electronic White Pages. Pregnant women were not eligible to participate. Quotas were set for age groups and a minimum of 100 participants per state to ensure a national sample reflecting the population. The questionnaire was based on a Health Canada survey with additional questions constructed by the investigators. Descriptive statistics were calculated and logistic regression analyses were used to assess associations with participants' knowledge and attitudes.Results. Of women surveyed, 61.5% had heard about effects of alcohol on the fetus and 55.3% had heard of Fetal Alcohol Syndrome. Although 92.7% agreed alcohol can affect the unborn child, 16.2% did not agree that the disabilities could be lifelong. Most women agreed that pregnant women should not drink alcohol (80.2%) and 79.2% reported having negative feelings towards pregnant women drinking alcohol. Women with higher education levels were more likely to know the effects of alcohol consumption in pregnancy (adjusted OR 5.62; 95% CI 3.20 to 9.87) but education level and knowledge were not associated with attitude.Conclusions. There was a disjunction between knowledge and attitudes towards alcohol consumption in pregnancy. These findings will assist in developing effective health promotion campaigns to reduce fetal alcohol exposure and subsequent fetal damage

    Attitudes and behaviour predict women's intention to drink alcohol during pregnancy: the challenge for health professionals

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    Background. To explore women's alcohol consumption in pregnancy, and potential predictors of alcohol consumption in pregnancy including: demographic characteristics; and women's knowledge and attitudes regarding alcohol consumption in pregnancy and its effects on the fetus. Methods. We conducted a national cross-sectional survey via computer assisted telephone interview of 1103 Australian women aged 18 to 45 years. Participants were randomly selected from the Electronic White Pages. Pregnant women were not eligible to participate. Quotas were set for age groups and a minimum of 100 participants per state to ensure a national sample reflecting the population. The questionnaire was based on a Health Canada survey with additional questions constructed by the investigators. Descriptive statistics were calculated and logistic regression analyses were used to assess associations of alcohol consumption in pregnancy with participants' characteristics, knowledge and attitudes.Results. The majority of women (89.4%) had consumed alcohol in the last 12 months. During their last pregnancy (n = 700), 34.1% drank alcohol. When asked what they would do if planning a pregnancy (n = 1103), 31.6% said they would consume alcohol and 4.8% would smoke. Intention to consume alcohol in a future pregnancy was associated with: alcohol use in the last pregnancy (adjusted OR (aOR) 43.9; 95% Confidence Interval (CI) 27.0 to 71.4); neutral or positive attitudes towards alcohol use in pregnancy (aOR 5.1; 95% CI 3.6 to 7.1); intention to smoke in a future pregnancy (aOR 4.7; 95% CI 2.5 to 9.0); and more frequent and higher current alcohol consumption. Conclusions. Women's past pregnancy and current drinking behaviour, and attitudes to alcohol use in pregnancy were the strongest predictors of alcohol consumption in pregnancy. Targeted interventions for women at higher risk of alcohol consumption in pregnancy are needed to change women's risk perception and behaviour

    The genetic architecture of the human cerebral cortex

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    The cerebral cortex underlies our complex cognitive capabilities, yet little is known about the specific genetic loci that influence human cortical structure. To identify genetic variants that affect cortical structure, we conducted a genome-wide association meta-analysis of brain magnetic resonance imaging data from 51,665 individuals. We analyzed the surface area and average thickness of the whole cortex and 34 regions with known functional specializations. We identified 199 significant loci and found significant enrichment for loci influencing total surface area within regulatory elements that are active during prenatal cortical development, supporting the radial unit hypothesis. Loci that affect regional surface area cluster near genes in Wnt signaling pathways, which influence progenitor expansion and areal identity. Variation in cortical structure is genetically correlated with cognitive function, Parkinson's disease, insomnia, depression, neuroticism, and attention deficit hyperactivity disorder

    Fetal alcohol syndrome

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    Fetal alcohol spectrum disorder (FASD) is the umbrella term for a range of clinically significant fetal effects of alcohol. It is not a clinical diagnosis. Fetal alcohol syndrome (FAS) is the most easliy recognised FASD, due to its characteristic facial features. Other FASD diagnoses include:-partial fetal alcohol syndrome-alcohol-related neurodevelopmental disorders-alcohol-related birth defects.Other terms that may be used include fetal alcohol effects (FAE) and static encephalopathy (alcohol exposed).The prevalence of FAS at birth varies between countries, and between ethnic groups within countries. Data from Western Australia in 2005 showed an overall prevalence of 0.5 in 1000 (Note 80), but it was 100 times higher in Aboriginal children (Note 81). Overseae estimates and recent research indicate that these figures are probably an underestimate

    Dental hospital admissions in children of mothers with an alcohol-related diagnosis: A population-based, data-linkage study

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    Objective: To investigate the relationship between maternal alcohol-use disorder and dental hospital admissions in children up to 5 years of age. Study design: Mothers with an International Classification of Diseases, 9th revision/10th revision alcohol-related diagnosis, a proxy for alcohol-use disorder, were identified through the Western Australian data-linkage system. Exposed mothers were frequency-matched by maternal age, Aboriginal status, and child's birth year to randomly selected comparison mothers without an alcohol diagnosis. Linkage with the Midwives Notification System (1983-2002) identified all births of these mothers; “exposed” (non-Aboriginal, n = 11 171; Aboriginal, n = 8145) and comparison cohorts (non-Aboriginal, n = 32 508; Aboriginal, n = 16 719). Dental hospital admissions were identified through linkage with Hospital Morbidity Data (1983-2007) (3.2% exposed; 3.0% comparison) and cases of fetal alcohol syndrome (n = 84) through linkage with the Western Australian Register of Developmental Anomalies. ORs and 95% CIs for having a dental admission (International Classification of Diseases, 9th revision: 520-529; International Classification of Diseases, 10th revision: K0-K14.9) were generated by the use of generalized estimating equations, which we adjusted for potential confounding factors (aOR).Results: Children of mothers with an alcohol-related diagnosis had increased adjusted odds of gingivitis and periodontal diseases (aOR 1.67; 95% CI 1.12-2.51) and “other” diseases of the lip and oral mucosa (aOR 1.56; 95% CI 1.21-2.01). Diseases of the salivary glands were increased only in Aboriginal children of mothers with an alcohol-related diagnosis (aOR 2.65; 95% CI 1.09-6.44). Children diagnosed with fetal alcohol syndrome had increased ORs of any dental admission (aOR 2.58; 95% CI 1.30-5.11). Conclusions: Maternal alcohol-use disorder was associated with dental admissions related to disorders of the soft tissues, but questions remain regarding perinatal influences on dental admissions and disease

    Guidelines for pregnancy: What’s an acceptable risk, and how is the evidence (finally) shaping up?

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    Issues. The lack of consensus about whether low to moderate levels of prenatal alcohol exposure are a risk factor for fetaldevelopment has generated considerable debate about what advice policies and guidelines should provide. Approach.This paperreviews the evidence from systematic reviews and meta-analyses examining the risk from low and moderate levels of prenatalalcohol exposure, along with the results of articles published 2009–2010, after the reviews. Key Findings. The reportedsignificant effects from low levels of prenatal alcohol exposure are likely due to methodological issues such as confounding and/ormisclassification of exposure or outcome and there is no strong research evidence of fetal effects from low levels of alcoholexposure.However, harm is well-documented with heavy exposure and moderate levels of exposure, 30–40 g per occasion andno more than 70 g per week, have been demonstrated to increase the risk of child behaviour problems. Implications. Withsuch a small margin before there is increased risk to the fetus, it would be morally and ethically unacceptable for policies andguidelines to condone consumption of alcohol during pregnancy. Not all women will follow this advice and some women willinadvertently consume alcohol prior to pregnancy awareness requiring non-judgmental counselling and the provision of rationaladvice about the likelihood of risk to the fetus. Conclusions. The policy advice that ‘the safest choice for pregnant women isto abstain from alcohol during pregnancy’ should be maintained. However, the abstinence message needs to be presented in abalanced and rational manner to prevent unintended negative consequences
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