Carmen Ildes Rodrigues Fróes Asmus

Correlation between blood mercury levels in mothers and newborns in Itaituba, Pará State, Brazil

This study evaluated transplacental mercury transfer by measuring Hg in blood samples of mothers and newborns (umbilical cord) in hospitals in the municipality (county) of Itaituba, Pará State, Brazil. Epidemiological and mercury exposure data were collected, besides clinical birth data. Mercury tests were performed by cold-vapor atomic absorption spectrophotometry. A total of 1,510 women and an equal number of their newborns participated in the study. Mean blood mercury was 11.53 microg/L in mothers and 16.68 microg/L in newborns (umbilical cord). The highest Hg levels were in the 31-40-year maternal age group and their newborns, with 14.37 microg/L and 21.87 microg/L, respectively. However, in all age groups the mean mercury level was higher in newborns than in mothers. There was a strong positive correlation between Hg levels in newborns and mothers (r = 0.8019; p = 0.000), with a significant linear regression model (r = 0.5283; p = 0.000). The results highlight the importance of monitoring pregnant women exposed to mercury as part of public health surveillance.

DDT reintroduction for malaria control: the cost-benefit debate for public health

DDT is a persistent insecticide that was widely used in the world from the 1940s until the 70s, when it was banned in the United States and other countries. Most of its toxic effects are not observed in the acute forms, but particularly after chronic exposure. These long-term issues include reproductive effects, varying according to the time of life in which the individuals were exposed. The aims of the current study were to review the principal toxicological effects of DDT on reproduction, stratifying by physiological periods of exposure, and based on the magnitude of these effects, to discuss the cost-benefit relationship of reintroducing DDT with the specifically defined vector control criteria.

Análise temporal da relação entre leptospirose e ocorrência de inundações por chuvas no município do Rio de Janeiro, Brasil, 2007-2012

O objetivo do presente estudo e examinar o efeito da media mensal de precipitacoes sobre o risco de leptospirose na cidade do Rio de Janeiro entre 2007 e 2012. Trata-se de um estudo ecologico analitico cuja variavel de desfecho foi o numero de casos de leptospirose por mes, e a variavel independente foi a precipitacao media mensal para as 32 estacoes de monitoramento por ano. Optou-se por modelar a relacao entre os casos de leptospirose e o efeito da chuva atraves da construcao de um modelo linear generalizado, utilizando a distribuicao binomial negativa. A precipitacao-lag mes mostrou ser um fator explicativo forte para o numero de casos de leptospirose. Este estudo indica que a media mensal de precipitacoes pode se constituir em um indicador que permita a realizacao de acoes visando a preparacao do setor saude para o provavel aumento de casos desta doenca. Cabe, portanto, a articulacao entre o trabalho da vigilância epidemiologica, especialmente aquele feito pelas salas de situacao em periodos de crise, e as instâncias de gestao de riscos da vigilância ambiental, para aumentar a capacidade de resposta a desastres naturais no municipio do Rio de Janeiro.

A Systematic Review of Children's Environmental Health in Brazil

In the region of the Americas, approximately 100,000 children under the age of 5 years die each year due to environmental hazards. Brazil, due to its large size and wide range of environmental challenges, presents numerous hazards to childrens health. The aim of this study was to systematically review the scientific literature that describes childrens exposures to environmental pollutants in Brazil and their effects on Brazilian childrens health. A systematic review of the scientific literature was performed without language restrictions and time of publication (years). The literature search was conducted in the following key resources: PubMed (MEDLINE), Scopus and Web of Science with the MeSH Terms: Environmental exposure AND Brazil (filters: Human, Child [birth to 18 years] and Affiliation Author). The Virtual Health Library was also employed to access the databases Scielo and Lilacs. The search strategy was [DeCS Terms]: Child OR adolescent AND Environmental exposure AND Brazil. Health effects in children associated with exposure to environmental pollutants in Brazil were reported in 74 studies, during the period between 1995 and 2015. The most frequently cited effect was hospital admission for respiratory causes including wheezing, asthma, and pneumonia among children living in areas with high concentrations of air pollutants. A broad spectrum of other health effects possibly linked to pollutants also was found such as prematurity, low birth weight, congenital abnormality (cryptorchidism, hypospadia, micropenis), poor performance in tests of psychomotor and mental development, and behavioral problems. Exposure to pesticides in utero and postnatally was associated with a high risk for leukemia in children <2 years old. These results show that there is a need in Brazil for stricter monitoring of pollutant emissions and for health surveillance programs especially among vulnerable populations such as pregnant women and young children.

Perfil socioeconômico das populações expostas a resíduos da exploração de petróleo

INTRODUCTION Environmental Macro-Area Five (EMA-5) is located in Rio de Janeiro. Their municipalities are suffering the consequences of rapid urbanization, especially after the discovery of large reserves of petroleum and natural gas (PNG) in the Campos Basin. OBJECTIVE To describe the socio-economic profile of the region and compare their indicators in space and time. METHODS This is an ecological study, which made comparisons between the 11 municipalities of EMA-5. It is based on the behavior of the indicators before and after the increase in royalties and special participatioms (RPE) and the division of the production areas of PNG (main production area - MPA - and the border zone of MPA, BZMPA). The period of analysis of the indicators ranged from 1991 to 2005. RESULTS Higher values of gross domestic product per capita were found in the municipalities of MPA, especially Macaé. The same occurred in the RPE per capita, especially Rio das Ostras (higher value) and Nova Friburgo (lower value). In 2004, more than 50% of total revenues of municipalities were dependent on the funds derived from royalties. In 2000, Nova Friburgo had the best Human Development Index. The highest value of the Quality Index of Municipalities Potential for Development was found in Macaé. The major indexes of Social Exclusion was found in Macaé, Nova Friburgo and Rio das Ostras. CONCLUSION It was found, in the municipalities of MPA, economic growth with great exclusive reliance on royalties. It should invest in alternative economic activities for which there is no damage to the population with the completion of these resources.

Efeitos da exposição a agrotóxicos sobre o sistema auditivo periférico e central: uma revisão sistemática

The World Health Organization reports a total of 3 million annual cases of acute pesticide poisoning (2.1 million cases in the developing countries alone). Pesticide use has reached alarming proportions in Brazil in the last decade. Pesticide sales skyrocketed from 2001 to 2008, making Brazil the worlds leading consumer of poisons. This study aimed to assess whether pesticide exposure causes peripheral or central auditory disorders and thus focused on the importance of hearing tests in populations with acute or chronic exposure. This was a systematic review of studies on the effects of pesticide exposure on the auditory system. The context and methodological quality of the full texts were analyzed. The review identified 143 studies on the theme, 16 of which met the inclusion criteria. All articles showed that pesticide exposure is ototoxic and leads to hearing loss.De acordo com a Organizacao Mundial da Saude, as intoxicacoes agudas por agrotoxicos sao da ordem de 3 milhoes anuais, com 2,1 milhoes de casos so nos paises em desenvolvimento. Na ultima decada, no Brasil, o uso de agrotoxicos assumiu proporcoes assustadoras. Entre 20012008 a venda desses produtos saltou, quando o pais alcancou a posicao de maior consumidor mundial de venenos. O objetivo deste estudo foi avaliar por meio de uma revisao sistematica se a exposicao ao agrotoxico causa alteracoes auditivas no sistema auditivo periferico/central, atentando assim para a importância da avaliacao auditiva em populacoes expostas de forma cronica ou aguda. Trata-se de uma revisao sistematica dos estudos publicados sobre os efeitos da exposicao ao agrotoxico no sistema auditivo. Analisaram-se os trabalhos contemplados na integra e tambem sua qualidade metodologica. A pesquisa identificou 143 estudos sobre o tema, sendo que 16 se enquadraram nos criterios de inclusao. Todos os artigos analisados evidenciaram que a exposicao ao agrotoxico e ototoxica e induz ao dano as vias auditivas.

Projeto-piloto do Primeiro Inquérito Nacional de Populações Expostas a Substâncias Químicas, 2008-2009

Para viabilizar a futura realizacao de um Inquerito Nacional de Populacoes Expostas a Substâncias Quimicas, executou-se um projeto-piloto para examinar a exequibilidade, testar e adequar metodologias e estabelecer parcerias. Foram realizados tres estudos de corte transversal, respectivamente, com doadores de sangue residentes na Regiao Metropolitana de Sao Paulo-SP, conscritos do Exercito Brasileiro e criancas escolares residentes no municipio do Rio de Janeiro-RJ, mediante aplicacao de questionarios e coleta de material biologico (sangue venoso e capilar, unha e cabelo) para analise de metais e compostos organoclorados persistentes. Concluiu-se que e viavel a realizacao de um Inquerito Nacional, embora a estrategia de obtencao das amostras biologicas deva ser definida para cada subgrupo da populacao. Recomenda-se aproveitar as estruturas de servicos existentes para obtencao de amostras, utilizar matrizes tradicionais para maior comparabilidade e garantir sua realizacao periodica.

Construção e validação de um índice de vulnerabilidade socioambiental para a vigilância e gestão de desastres naturais no Estado do Rio de Janeiro, Brasil

Floods account for approximately 40% of natural disasters that occur around the world and they are therefore considered a major public health problem. While floods constitute a global problem, data from the International Strategy for Disaster Reduction showed that almost all of the deaths or individuals affected are concentrated in developing countries. It is assumed that, although they have natural causes, the consequences of floods also involve social issues. To try to predict such vulnerability in the occurrence of natural disasters, a social and environmental index that shows the degree of vulnerability of a location was developed in this paper. This index was developed using multivariate analysis involving factor analysis and demographic, social and environmental variables. The index was applied in the municipalities of the state of Rio de Janeiro and compared with the official figures of the Civil Defense Unit. The results found suggest that the proposed index meets the expectation of predicting the vulnerability of the local population.

Stomach cancer mortality among agricultural workers: results from a death certificate-based case-control study

INTRODUCTION: Pesticide consumption is very high in Brazil.OBJECTIVE: The present study investigated the stomach cancer mortality among Brazilian agricultural workers in Rio de Janeiro state.METHODS: In this case-control study, cases were individuals of both genders, aged ≥20 years, for whom cause of death was ascertained as stomach cancer. Controls were individuals with causes of death other than neoplasm and diseases of the digestive system. Crude and adjusted analyses were carried out. Stomach cancer mortality risk was then estimated for the agricultural workers according to the pesticide expenditures per municipality.RESULTS: Agricultural workers showed an elevated risk of stomach cancer mortality (adjusted OR=1.42; 95%CI: 1.33-1.78). This risk was higher among male workers, aged 50-69 years, white, and among workers with 1-7 years of education. Results also showed increasing stomach cancer mortality along with the increase of pesticide expenditure per agricultural worker.CONCLUSION: Stomach cancer risk among agricultural workers may be associated with pesticide exposure.

Characterization of population exposure to organochlorines: a cluster analysis application

This study aimed to show the results from a cluster analysis application in the characterization of population exposure to organochlorines through variables related to time and exposure dose. Characteristics of 354 subjects in a population exposed to organochlorine pesticides residues related to time and exposure dose were subjected to cluster analysis to separate them into subgroups. We performed hierarchical cluster analysis. To evaluate the classification accuracy, compared to intra-group and inter-group variability by ANOVA for each dimension. The aggregation strategy was accomplished by the method of Ward. It was, for the creation of clusters, variables associated with exposure and routes of contamination. The information on the estimated intake doses of compound were used to weight the values of exposure time at each of the routes, so as to obtain values proxy exposure intensity. The results showed three clusters: cluster 1 (n = 45), characteristics of greatest exposure, the cluster 2 (n = 103), intermediate exposure, and cluster 3 (n = 206), less exposure. The bivariate analyzes performed with groups that are groups showed a statistically significant difference. This study demonstrated the applicability of cluster analysis to categorize populations exposed to organochlorines and also points to the relevance of typological studies that may contribute to a better classification of subjects exposed to chemical agents, which is typical of environmental epidemiology studies to a wider understanding of etiological, preventive and therapeutic contamination.