Background There have been several studies assessing the epidemiology and effects of tobacco smoke in the cystic fibrosis (CF) population, but few address the efforts of smoking cessation interventions. Our objective is to present one tobacco prevention and cessation programme targeting patients with CF in the Mediterranean region of Murcia (Spain). Methods All registered patients in the Regional CF unit (n=105) in 2008 were included in a cross-sectional and prospective uncontrolled study of tobacco use and exposure in CF patients using a baseline and one-year follow-up. Target population includes both patients and other family members living at home. The study included an initial telephone questionnaire, measurement of lung function, urinary cotinine levels, and several telephone counselling calls and/or personalized smoking cessation services. Results Of the 97 contacted patients, 59.8% (n=58) were exposed to environmental tobacco smoke (ETS), 12.4% (n=12) had smoked at one time, and 14.3% (n=8) of patients over the age of 15 actively smoked. The mean age was 31.13 (range: 19-45). Of the non-smokers (n=89), 56.2% reported ETS and 26.9% live with at least one smoker at home. 49.2% had urinary cotinine levels >10 ng/ml. The correlation found between patients’ cotinine levels and their reported tobacco exposure was (0.77, p<0.0001). Active smoking by mothers during pregnancy was associated with significantly lower lung function in young CF patients (-0,385, p= 0.04). At the one-year follow-up, 13 individuals made attempts to stop smoking, 6 of which are now ex-smokers (12.5% of all smokers). Conclusions Smoking during pregnancy adversely affects lung function in individuals with CF. Tobacco he targeted tobacco prevention and cessation programmes are an effective and vital component for CF disease management. The trained professionals in prevention and smoking cessation services could provide patients with adequate follow-up, integrating an environmental health approach into CF patients’ healthcare

Aims We aimed to assess the effects of exposure to tobacco smoke, alcohol and illegal drugs during early pregnancy on the head circumference (HC) at birth of otherwise healthy neonates. Methods A follow-up study from the first trimester of pregnancy to birth was carried out in 419 neonates. An environmental reproductive health form was used to record data of substance exposure obtained during the first obstetric visit at the end of the first trimester. A multiple linear regression model was created for this purpose. Results Alcohol intake during pregnancy and medical ionizing radiation exposure were the most significant predictors of HC. The mothers’ alcohol consumption increased with the mothers’ and fathers’ education level, net family income and fathers’ alcohol consumption. In contrast, maternal smoking decreased with increasing mothers’ and fathers’ education level and net family income. About 13% of the surveyed embryos were exposed to illegal drugs. Conclusions Mild to moderate alcohol consumption diminishes the at-birth HC of theoretically healthy newborns in a linear form. There was no threshold dose. We perceived a need for increasing the awareness, and for training, of health care professionals and parents, in regard to risks of alcohol consumption and for recommending abstinence of these substances in both parents during pregnancy. It should also be remembered that medical ionizing radiation should be performed only during the first half of the cycle in fertile women. We think that our study has an important social impact as it affords data for implementing policies for promoting “healthy pregnancies”.

Purpose Since 1992, the Centers for Disease Control and Prevention recommends that women of childbearing age consume 400 µg of folic acid per day to reduce the risk of neural tube defects (NTD). It has been speculated that both NTD and nervous system tumors (NST) may share common mechanisms of altered development. It examines the association between folic acid supplementation and the risk for childhood NST. Methods Incident cases of children with cancer in Spain registered between 2004 and 2006 were identified through the MACAPE Network Group. Tumors were classified as tumors derived from the neuroectoderm (cases) and those with a mesoderm origin (controls). In a second analysis, NST were further divided into central nervous system tumors (CNST) and sympathetic nervous system tumors (SNST). We compared folic acid supplementation between the groups. Results Overall, folic acid supplementation any time during pregnancy was similar between cases and controls (odds ratio (OR)=1.05; 95% confidence interval (CI) 0.92–1.20). However, supplementation before the 21st and 36th days of gestation resulted in significantly lower NST than in children with mesoderm tumors (OR=0.34; 95% CI 0.17–0.69 and OR=0.58; 95% CI 0.37–0.91, respectively). Preconceptional intakes of folic acid were also lower in NST although marginally nonsignificant (OR=0.44; 95% CI 0.10–1.02). When NST were divided into CNST and SNST, significant differences between tumors of mesoderm origin were only found for CNST. Conclusions Our results support the hypothesis that folate supplementation reduces the risk of childhood NST, especially CNST. The specific mechanism and cellular role that folate may play in the development of CNST have yet to be elucidated.

Methylmercury (MeHg) is a bioaccumulable toxin in the trophic chain and a powerful neurotoxin during fetal and child development. Consumption of contaminated fish and shellfish is a principal environmental source of MeHg exposure. This study was designed to assess the Hg and estimated MeHg intake in vulnerable groups of the Murcia region, a Mediterranean part of Spain, compared with international regulations. A validated food frequency questionnaire was used to assess seafood consumptions in 320 children younger than 10 years, 301 women of childbearing age, and 537 pregnant women. Hg concentrations were measured in the most consumed fish products by cold vapor generation-atomic fluorescence spectrometry. The weekly intake of MeHg (microg/kg bw/week) was 2.60 (95% CI = 2.10-3.10) in children 1-5 years, 2.65 (95% CI = 2.26-3.03) in children 6-10 years, 0.98 (95% CI = 0.89-1.07) in women of childbearing age, and 0.88 (95% CI = 0.81-0.95) in pregnant women. The main exposure to MeHg, especially in young children, is related to intake of bluefin tuna and swordfish. Fifty-four percent of children aged 1-10 years, 10% of pregnant women, and 15% of women of childbearing age exceed the Joint Expert Committee on Food Additives provisional tolerable weekly intake of MeHg. In the Murcia region, where fish is a central component of the diet, the focus should be on educating vulnerable populations to reorient fish consumption in order to lower the amount of Hg incorporated with the diet as well as to reduce Hg emissions into the environment.

No abstract