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1.
Digit Health ; 9: 20552076231177146, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37284011

RESUMO

Objectives: To compare the environmental health results in women trying to get pregnant or pregnant using a mobile health application (Green Page) through healthcare professionals or self-completed by women, and to explore the relationship between the subjective well-being of these women with their lifestyles and environmental factors. Methods: A descriptive study with mixed methods was conducted in 2018. A mobile health survey was used in two phases. Phase 1 was a cross-sectional study through professionals (n = 1100) followed by phase 2, a convenience sampling through women's self-reporting (n = 3425). A personalized report was downloadable with health recommendations for the well-being of the mother and child. Results: Of the 3205 participants (mean age = 33 years, SD = 0.2 years), 1840 were planning a pregnancy and 1365 were pregnant. One in five pregnant women had a low level of happiness. Globally, subjective well-being and happiness were found to be negatively associated with lack of contact with nature, sedentary lifestyle, excess weight, environmental exposure, and older age in pregnancy. Precisely 45%, 60%, and 14% of women were exposed to tobacco, alcohol, and illegal drugs, respectively. The women self-reported levels of risk factors higher than when the tool was used by or through professionals. Conclusions: The use of mobile health interventions focused on environmental health during planning or pregnancy periods could help improve the quality of healthcare and foster greater involvement of women in their self-care process, thus promoting empowerment, healthier environments, and lifestyles. Ensuring equity of access and data protection are global challenges to be addressed.

2.
Artigo em Inglês | MEDLINE | ID: mdl-36767873

RESUMO

BACKGROUND: Several environmental factors seem to be involved in childhood leukaemia incidence. Traffic exposure could increase the risk while urban green spaces (UGS) exposure could reduce it. However, there is no evidence how these two factors interact on this infant pathology. OBJECTIVES: to evaluate how residential proximity to UGS could be an environmental protective factor against traffic exposure on childhood leukaemia incidence. METHODS: A population-based case control study was conducted across thirty Spanish regions during the period 2000-2018. It included 2526 incident cases and 15,156, individually matched by sex, year-of-birth, and place-of-residence. Using the geographical coordinates of the participants' home residences, a 500 m proxy for exposure to UGS was built. Annual average daily traffic (AADT) was estimated for all types of roads 100 m near the children's residence. Odds ratios (ORs) and 95% confidence intervals (95% CIs), UGS, traffic exposure, and their possible interactions were calculated for overall childhood leukaemia, and the acute lymphoblastic (ALL) and acute myeloblastic leukaemia (AML) subtypes, with adjustment for socio-demographic covariates. RESULTS: We found an increment of childhood leukaemia incidence related to traffic exposure, for every 100 AADT increase the incidence raised 1.1% (95% CI: 0.58-1.61%). UGS exposure showed an incidence reduction for the highest exposure level, Q5 (OR = 0.63; 95% CI = 0.54-0.72). Regression models with both traffic exposure and UGS exposure variables showed similar results but the interaction was not significant. CONCLUSIONS: Despite their opposite effects on childhood leukaemia incidence individually, our results do not suggest a possible interaction between both exposures. This is the first study about the interaction of these two environmental factors; consequently, it is necessary to continue taking into account more individualized data and other possible environmental risk factors involved.


Assuntos
Leucemia Mieloide Aguda , Parques Recreativos , Criança , Lactente , Feminino , Humanos , Incidência , Estudos de Casos e Controles , Habitação , Exposição Ambiental
3.
Environ Geochem Health ; 44(8): 2341-2354, 2022 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34286388

RESUMO

There are few well-established risk factors for childhood leukemias. While the frequency of childhood leukemias might be partially attributable to some diseases (accounting for a small fraction of cases) or ionizing radiation, the role of heavy metals has not been assessed. The objective of our study was to assess the potential association between levels of cadmium (Cd) and lead (PB) in soil and childhood leukemias incidence. We conducted a population-based case-control study of childhood leukaemia in Spain, covering 2897 incident cases gathered from the Spanish Registry of Childhood Tumours and including 14 Spanish Regions with a total population of 5,307,433 children (period 1996-2015). Cd and Pb bioavailable levels at every children's home address were estimated using data from the Geochemical Atlas of Spain. We used logistic regression to estimate odds ratios (ORs) and their 95% confidence intervals (95%CIs); we included as covariates: sex, rurality, employment rate and socioeconomic status. Metal levels were analysed according to two definitions: as continuous variable assuming linearity and as categorical variables to explore a potentially nonlinear association (quantiles). Increases in both Cd and Pb topsoil levels were associated with increased probability of childhood leukemias incidence. The results for the models with the continuous variables showed that a unit increase on the topsoil level was associated with an OR of 1.11 for Cd (95%CI 1.00-1.24) and an OR of 1.10 for Pb (95%CI 0.99-1.21). Our study may point towards a possible link between residential Cd and Pb topsoil levels and the probability of childhood leukemias incidence. Residing in a location with the highest concentrations of these heavy metals compared to those locations with the lowest could increase the risk around a 20%, for both Cd and Pb.


Assuntos
Leucemia , Metais Pesados , Poluentes do Solo , Cádmio/análise , Estudos de Casos e Controles , Criança , Monitoramento Ambiental/métodos , Humanos , Incidência , Chumbo/análise , Leucemia/induzido quimicamente , Leucemia/epidemiologia , Metais Pesados/análise , Solo , Poluentes do Solo/análise , Poluentes do Solo/toxicidade
4.
Alcohol Alcohol ; 54(6): 599-608, 2019 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-31612211

RESUMO

AIMS: In current clinical practice, prenatal alcohol exposure is usually assessed by interviewing the pregnant woman by applying questionnaires. An alternative method for detecting alcohol use is to measure the biomarker carbohydrate-deficient transferrin (CDT). However, few studies measure CDT during pregnancy. This study examines the utility of CDT biomarker in the screening of alcohol exposure during early pregnancy. METHODS: A cohort of 91, first-trimester pregnant women assigned to a public reference maternity hospital, was screened using the Green Page (GP) questionnaire, an environmental exposure tool. CDT levels and other biomarkers of alcohol use were measured and compared with questionnaire data. RESULTS: About 70% of the mothers in the study consumed alcohol during early pregnancy and 22% met high-risk criteria for prenatal exposure to alcohol. CDT measurement showed a statistically significant area under the receiver operating characteristic curve with a value of 0.70. For a value of 0.95% of CDT, a specificity of 93% was observed. The most significant predictors of CDT were the number of binge drinking episodes, women's body mass index and European white race. CONCLUSION: Pregnant women with a CDT value >0.95% would be good candidates for the performance of the GP questionnaire during early pregnancy in order to detect potential high-risk pregnancy due to alcohol exposure.


Assuntos
Consumo de Bebidas Alcoólicas/sangue , Gravidez/sangue , Transferrina/análogos & derivados , Adulto , Consumo Excessivo de Bebidas Alcoólicas/sangue , Biomarcadores/sangue , Índice de Massa Corporal , Criança , Transtornos do Comportamento Infantil/etiologia , Estudos de Coortes , Feminino , Humanos , Masculino , Programas de Rastreamento , Efeitos Tardios da Exposição Pré-Natal , Curva ROC , Fatores Socioeconômicos , Inquéritos e Questionários , Transferrina/análise , População Branca
5.
Midwifery ; 78: 123-130, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31425967

RESUMO

OBJECTIVE: To contribute in closing the current gap in literature that holistically examines sociocultural influences on perinatal drug dependency. This article draws from social network theory and structural violence to qualitatively consider the contextual components of addiction and substance use during pregnancy, which purposefully moves away from situating this issue from solely being within the contexts of pathologized disorders or products of social inequalities. DESIGN: Face-to-face semi-structured interviews with drug-dependent pregnant women identified during a reproductive environmental health consultation. SETTING: Interviews were conducted at a university hospital in southeastern Spain between October 2015 and June 2016. PARTICIPANTS: 10 pregnant women with confirmed perinatal substance use and/or drug dependency. FINDINGS: The sociocultural perspective offers a useful lens by which providers can understand the reasons for initial substance use and progress of multi-drug dependency as way of individually tailoring intervention strategies for expecting mothers. This perspective draws from the frameworks of social network analysis (SNA) and structural violence to dialectically examine drug dependency in this unique patient population not to be solely an individual occurrence, but rather a combination of macro and micro-level factors at play. KEY CONCLUSIONS: The sociocultural approach in examining maternal health allows for the holistic exploration of the already taboo and symbolically paradoxical phenomenon of drug dependency in pregnant women. IMPLICATIONS FOR PRACTICE: The "Hoja Verde" and similar perinatal screening methods that comprehensively assess for the potential of environmental risks can be a key instrument in the practice of preventing developmental issues of children as early as pregnancy and into adolescence.


Assuntos
Programas de Rastreamento/tendências , Primeiro Trimestre da Gravidez/efeitos dos fármacos , Gestantes/psicologia , Transtornos Relacionados ao Uso de Substâncias/complicações , Adulto , Estudos de Casos e Controles , Exposição à Violência/psicologia , Exposição à Violência/estatística & dados numéricos , Feminino , Humanos , Entrevistas como Assunto/métodos , Programas de Rastreamento/métodos , Gravidez , Primeiro Trimestre da Gravidez/psicologia , Pesquisa Qualitativa , Espanha , Transtornos Relacionados ao Uso de Substâncias/psicologia
6.
J Med Case Rep ; 11(1): 42, 2017 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-28196530

RESUMO

BACKGROUND: Mutational combinations of the cystic fibrosis transmembrane conductance regulator, CFTR, gene have different phenotypic manifestations at the molecular level with varying clinical consequences for individuals possessing such mutations. Reporting cystic fibrosis transmembrane conductance regulator mutations is important in understanding the genotype-phenotype correlations and associated clinical presentations in patients with cystic fibrosis. Understanding the effects of mutations is critical in developing appropriate treatments for individuals affected with cystic fibrosis, non-classic cystic fibrosis, or cystic fibrosis transmembrane conductance regulator-related disorders. This is the first report of related individuals possessing the R248G missense cystic fibrosis transmembrane conductance regulator mutation and we present their associated clinical histories. CASE PRESENTATION: All three patients are of Spanish descent. Deoxyribonucleic acid analysis revealed that all three siblings possessed a novel c.742A>G mutation, resulting in a p.Arg248Gly (R248G) amino acid change in exon 6 in trans with the known N1303K mutant allele. Case 1 patient is a 39-year-old infertile man presenting with congenital unilateral absence of the vas deferens and recurrent episodes of epigastric pain. Case 2 patient is a 32-year-old woman presenting with periods of infertility, two previous spontaneous abortions, recurrent epigastric pain, and recurrent pancreatitis. Case 3 patient is a 29-year-old woman presenting with recurrent pancreatitis and epigastric pain. CONCLUSIONS: We report the genotype-phenotype correlations and clinical manifestations of a novel R248G cystic fibrosis transmembrane conductance regulator mutation: congenital unilateral absence of the vas deferens in males, reduced female fertility, and recurrent acute pancreatitis. In addition, we discuss the possible functional consequences of the mutations at the molecular level.


Assuntos
Regulador de Condutância Transmembrana em Fibrose Cística/genética , Infertilidade Feminina/genética , Infertilidade Masculina/genética , Mutação de Sentido Incorreto , Pancreatite/etiologia , Adulto , Fibrose Cística/genética , Feminino , Genótipo , Humanos , Masculino , Fenótipo , Irmãos
7.
Artigo em Inglês | MEDLINE | ID: mdl-27754353

RESUMO

Secondhand smoke exposure (SHSe) has multiple adverse effects on lung function and growth, nutrition, and immune function in children; it is increasingly being recognized as an important modifier of disease severity for children with chronic diseases such as cystic fibrosis (CF). This review examines what is known regarding the prevalence of SHSe in CF, with the majority of reviewed studies utilizing parental-reporting of SHSe without an objective biomarker of exposure. A wide range of SHSe is reported in children with CF, but under-reporting is common in studies involving both reported and measured SHSe. Additionally, the impact of SHSe on respiratory and nutritional health is discussed, with potential decreases in long-term lung function, linear growth, and weight gain noted in CF children with SHSe. Immunologic function in children with CF and SHSe remains unknown. The impact of SHSe on cystic fibrosis transmembrane conductance regulator (CFTR) function is also examined, as reduced CFTR function may be a pathophysiologic consequence of SHSe in CF and could modulate therapeutic interventions. Finally, potential interventions for ongoing SHSe are delineated along with recommended future areas of study.


Assuntos
Fibrose Cística/epidemiologia , Poluição por Fumaça de Tabaco/efeitos adversos , Criança , Humanos
8.
Adicciones ; 28(2): 99-107, 2016 Mar 02.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-26990263

RESUMO

This study evaluates the impact over time of a telephone-based intervention in tobacco cessation and prevention targeting patients with cystic fibrosis (CF) in the Mediterranean region of Murcia, Spain. We conducted an experimental prospective study with a cohort of CF patients using an integrative smoking cessation programme, between 2008 and 2013. The target population included family members and patients from the Regional CF unit. The study included an initial tobacco exposure questionnaire, measurement of lung function, urinary cotinine levels, anthropomorphic measures and the administered intervention at specific time intervals. Of the 88 patients tracked through follow-up, active smoking rates were reduced from 10.23% to 4.55% (p = 0.06). Environmental tobacco exposure was reduced in non-smoker patients from 62.03% to 36.90% (p < 0.01) during the five year follow-up. Significant reductions in the gradient of household tobacco smoke exposure were also observed with a decrease of 12.60%, from 31.65% (n = 25/79) to 19.05% (n = 16/84) in 2013 (p = <0.01). Cotinine was significantly correlated with both active and passive exposure (p<0.01) with a significant reduction of cotinine levels from 63.13 (28.58-97.69) to 20.56 (0.86-40.27) ng/ml (p<0.01). The intervention to significantly increase the likelihood of family quitting (smoke-free home) was 1.26 (1.05-1.54). Telephone based interventions for tobacco cessation and prevention is a useful tool when applied over time. Trained intervention professionals in this area are needed in the environmental health approach for the treatment of CF.


Este estudio evalúa el impacto en el tiempo de una intervención telefónica de prevención y cesación tabáquica dirigida a pacientes con fibrosis quística (FQ) en la Región de Murcia, España. Estudio prospectivo experimental en una cohorte de pacientes con FQ utilizando un programa integrativo de cesación tabáquica, entre 2008 y 2013. La población diana incluye a pacientes y familiares de la unidad regional de FQ. El estudio incluyó un cuestionario inicial de exposición al tabaco, medición de la función pulmonar, niveles de cotinina en orina, medidas antropomórficas y la intervención realizada en intervalos de tiempo.De los 88 pacientes seguidos, la tasa de fumadores activos se redujo de 10,23% a 4,55% (p = 0,06). La exposición al humo ambiental de tabaco se redujo en los pacientes no fumadores de 62,03% a 36,90% (p < 0,01) durante los cinco años de seguimiento. Se observaron reducciones significativas en la exposición al humo ambiental de tabaco en los hogares, de 31,65% (n = 25/79) a 19,05% (n = 16/84) en 2013 (p = <0,01). La cotinina se correlacionó significativamente con la exposición al tabaco activa y pasiva (p < 0,01) con una reducción significativa de los niveles de cotinina de 63,13 (28,58-97,69) a 20,56 (0,86-40,27) ng/ml (p < 0,01). La intervención para aumentar significativamente la probabilidad de abandono familiar (hogar libre de humo) fue de 1,26 (1,05-1,54). La intervención telefónica mantenida en el tiempo es una herramienta útil para la prevención y cesación tabáquica. Profesionales entrenados en este modelo de intervención con enfoque en salud medioambiental son necesarios para mejorar el tratamiento de FQ.


Assuntos
Fibrose Cística , Abandono do Hábito de Fumar , Poluição por Fumaça de Tabaco/prevenção & controle , Uso de Tabaco/prevenção & controle , Adulto , Feminino , Seguimentos , Humanos , Masculino , Estudos Prospectivos , Espanha , Fatores de Tempo , Adulto Jovem
9.
Int J Environ Res Public Health ; 10(10): 5178-90, 2013 Oct 17.
Artigo em Inglês | MEDLINE | ID: mdl-24142184

RESUMO

BACKGROUND: Gastroschisis, a birth defect characterized by herniated fetal abdominal wall, occurs more commonly in infants born to teenage and young mothers. Ischemia of the vascular vitelline vessels is the likely mechanism of pathogenesis. Given that chronic stress and violence against women are risk factors for cardiovascular disease we explored whether these may represent risk factors for gastroschisis, when they occur during pregnancy. A case-control study was conducted, with 15 incident cases of children born with gastroschisis in the Region of Murcia, Spain, from December 2007 to June 2013. Forty concurrent controls were recruited at gestation weeks 20-24 or post-partum. All mothers of cases and controls completed a comprehensive, in-person, 'green sheet' questionnaire on environmental exposures. RESULTS: Mothers of children with gastroschisis were younger, smoked more cigarettes per week relative to controls, were exposed to higher amounts of illegal drugs, and suffered from domestic violence more frequently than the controls. Multivariable logistic regression analysis highlights periconceptional 'gender-related violence' (OR: 16.6, 95% CI 2.7 to 101.7) and younger maternal age (OR 1.1, 95% CI 1.0-1.3). CONCLUSIONS: Violence against pregnant women is associated with birth defects, and should be studied in more depth as a cause-effect teratogenic. Psychosocial risk factors, including gender-based violence, are important for insuring the health and safety of the pregnant mother and the fetus.


Assuntos
Gastrosquise/etiologia , Violência , Adolescente , Adulto , Índice de Massa Corporal , Estudos de Casos e Controles , Criança , Feminino , Humanos , Lactente , Masculino , Gravidez , Fatores de Risco , Fumar/efeitos adversos , Fatores Socioeconômicos , Espanha , Transtornos Relacionados ao Uso de Substâncias , Adulto Jovem
10.
J Cyst Fibros ; 11(1): 34-9, 2012 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-22000068

RESUMO

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 1-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 personalised 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 1-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 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.


Assuntos
Prevenção do Hábito de Fumar , Fumar/epidemiologia , Abandono do Uso de Tabaco , Adulto , Comorbidade , Cotinina/urina , Estudos Transversais , Fibrose Cística , Gerenciamento Clínico , Saúde Ambiental , Saúde da Família , Feminino , Comportamentos Relacionados com a Saúde , Humanos , Pulmão/fisiopatologia , Masculino , Pessoa de Meia-Idade , Fumar/fisiopatologia , Espanha/epidemiologia , Poluição por Fumaça de Tabaco/estatística & dados numéricos , Adulto Jovem
11.
Childs Nerv Syst ; 26(12): 1727-33, 2010 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-20496070

RESUMO

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.


Assuntos
Ácido Fólico/uso terapêutico , Neoplasias do Sistema Nervoso/prevenção & controle , Gravidez/efeitos dos fármacos , Cuidado Pré-Natal/métodos , Complexo Vitamínico B/uso terapêutico , Estudos de Casos e Controles , Pré-Escolar , Feminino , Humanos , Masculino
12.
J Med Case Rep ; 3: 6626, 2009 Mar 30.
Artigo em Inglês | MEDLINE | ID: mdl-19830118

RESUMO

INTRODUCTION: Bladder exstrophy is a rare urogenital abnormality. Other urogenital malformations have been associated with exposure to hormonal pesticide disruptors during critical developmental periods. This is the first report in the literature to associate household exposure to pesticides with bladder exstrophy. CASE PRESENTATION: We describe the pediatric environmental history of a newborn baby boy with isolated bladder exstrophy. In this case the pediatric environmental history includes the constitutional, genealogical, genetic and environmental factors related to bladder exstrophy, which revealed a cockroach infestation in the parents' home and the daily use of bug spray to kill them. The mother used one bottle of spray every 2 days (1000cc) and more in the summer, when the problem was worse. During gestational weeks 0-12, the mother intensively used a domestic pesticide consisting of a mixture of pyrethroids (cyfenothrin 0.5%, and tetramethrin 0.31%) and pyriproxyfen (0.01%). She described repeated episodes of mild to moderate poisoning that are associated with the use of household pesticides. The mother is a housewife and the father works as a fumigator of fruit fields and he reported gastrointestinal symptoms associated with the use of occupational pesticides. However, he did not believe he carried traces of these products into the home and his wife washed his work clothes separately. The pyrethroids and pyriproxyfen were detected in a urine sample obtained from the child 4 months after he was born. No other risk factors were identified. CONCLUSIONS: A detailed and carefully conducted pediatric environmental history, which includes information about home pesticide use, should be carried out for all children with bladder exstrophy. Domestic exposure to pesticides during critical developmental periods may have deleterious effects for the fetus.

13.
Ther Drug Monit ; 31(4): 495-501, 2009 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-19571777

RESUMO

Organophosphates are pesticides ubiquitous in the environment and have been hypothesized as one of the risk factors for acute lymphoblastic leukemia (ALL). In this study, we evaluated the associations of pesticide exposure in a residential environment with the risk for pediatric ALL. This is a case-control study of children newly diagnosed with ALL, and their mothers (n = 41 child-mother pairs) recruited from Georgetown University Medical Center and Children's National Medical Center in Washington, DC, between January 2005 and January 2008. Cases and controls were matched for age, sex, and county of residence. Environmental exposures were determined by questionnaire and by urinalysis of pesticide metabolites using isotope dilution gas chromatography-high-resolution mass spectrometry. We found that more case mothers (33%) than controls (14%) reported using insecticides in the home (P < 0.02). Other environmental exposures to toxic substances were not significantly associated with the risk of ALL. Pesticide levels were higher in cases than in controls (P < 0.05). Statistically significant differences were found between children with ALL and controls for the organophosphate metabolites diethylthiophosphate (P < 0.03) and diethyldithiophosphate (P < 0.05). The association of ALL risk with pesticide exposure merits further studies to confirm the association.


Assuntos
Exposição Ambiental/efeitos adversos , Compostos Organofosforados/toxicidade , Praguicidas/toxicidade , Leucemia-Linfoma Linfoblástico de Células Precursoras/patologia , Estudos de Casos e Controles , Criança , Feminino , Humanos , Masculino , Fatores de Risco
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