Impact of Cognitive Intervention on Neurocognitive Development of Schoolchildren Exposed to Lead in a Semi-Urban Community in Mexico.

Unlabelled: Lead exposure is a severe public health issue that can adversely affect children's neurocognitive development. A semi-urban community in Mexico has been exposed to lead from food cooked in glazed clay pots. A cognitive intervention was conducted from 2015 to 2016 to minimize this negative impact.

Short-Term Ambient Air Ozone Exposure and Components of Metabolic Syndrome in a Cohort of Mexican Obese Adolescents.

Ambient air pollution is a major global public health concern; little evidence exists about the effects of short-term exposure to ozone on components of metabolic syndrome in young obese adolescents. The inhalation of air pollutants, such as ozone, can participate in the development of oxidative stress, systemic inflammation, insulin resistance, endothelium dysfunction, and epigenetic modification. Metabolic alterations in blood in components of metabolic syndrome (MS) and short-term ambient air ozone exposure were determined and evaluated longitudinally in a cohort of 372 adolescents aged between 9 to 19 years old.

[Not Available].

Objetivo. Describir la evidencia sobre la presencia e infectividad de SARS-CoV-2 y otros coronavirus en aguas residuales y su potencial uso como herramienta de vigilancia epidemiológica. Material y métodos.

Prenatal exposure to VOCs and NOx and lung function in preschoolers.

Background: Several studies have shown that exposure to air pollutants affects lung growth and development and can result in poor respiratory health in early life.

Methods: We included a subsample of 772 Mexican preschoolers whose mothers participated in a Prenatal Omega-3 fatty acid Supplements, GRowth, And Development birth cohort study with the aim to evaluate the impact of prenatal exposure to volatile organic compounds and nitrogen oxides on lung function measured by oscillation tests. The preschoolers were followed until 5 years of age.

Women exposure to household air pollution after an improved cookstove program in rural San Luis Potosi, Mexico.

The state government of San Luis Potosí (SLP), Mexico implemented an improved cookstove (ICS) program in rural areas. As part of the comprehensive program evaluation, we compared fine particulate material (PM) concentrations in kitchens and patios in treated (TH), and non-treated households (NTH), and analyzed pollutant levels according to patterns of fuels and devices use reported by the women. A panel study was conducted in 728 households (357 TH and 371 NTH) in three regions of SLP including two sampling rounds in 2015-16.

A follow-up study after an improved cookstove intervention in rural Mexico: Estimation of household energy use and chronic PM exposure.

The benefits of improved biomass cookstoves (ICS) depends on their adoption and sustained use. Few studies have documented if and how they are used more than five years after being introduced. We conducted a 9-year prospective cohort study among young rural women in the highlands of Michoacan, Mexico.

Environmental Health Promotion of a Contaminated Site in Mexico.

Entangled in complex ecological, sociocultural, and economic systems, current environmental health problems require integrated participatory approaches. Alpuyeca, a semi-urban, highly marginalized community in South-Central Mexico burdened by lead and polychlorinated biphenyl (PCB) contamination, dengue fever, and intestinal diseases, illustrates this. Its residents are distinctive, however, for their concerted actions in the face of environmental problems and the presence of defenders of a prehispanic worldview based on the protection of nature.

Prenatal Exposure to Nitrogen Oxides and its Association with Birth Weight in a Cohort of Mexican Newborns from Morelos, Mexico.

Background: The Child-Mother binomial is potentially susceptible to the toxic effects of pollutants because some chemicals interfere with placental transfer of nutrients, thus affecting fetal development, and create an increased the risk of low birth weight, prematurity and intrauterine growth restriction.

Objective: To evaluate the impact of prenatal exposure to nitrogen oxides (NOx) on birth weight in a cohort of Mexican newborns.

Methodology: We included 745 mother-child pair participants of the POSGRAD cohort study.

State of Children Environmental Health Research in Latin America.

Background: Promotion of biomedical research along with the development of evidence-based prevention policies have been suggested as an effective way to reduce environmental risks for children's health in Latin America. However, there is little information on the current state of childhood environmental health research, which might help identify its strengths and limitations, as well as to design a strategy to improve the future of child environmental health research in the region.

Objective: To describe the current state of environmental health research on children exposed to environmental pollutants in Latin America.

Evaluation of the effect of an environmental management program on exposure to manganese in a mining zone in Mexico.

Background: In the state of Hidalgo, Mexico, is found the largest second deposit of Manganese (Mn) in Latin America. Various studies on the sources of emission, exposure, and the effects on the health of children and adults have been conducted utilizing an ecosystem approach. Given the findings of Mn levels in air and the neurocognitive effects, an Environmental Management Program (EMP) was designed and implemented with the purpose of reducing exposure to Mn of the population, including various actions for reducing Mn emissions into the atmosphere.

Modeling and estimating manganese concentrations in rural households in the mining district of Molango, Mexico.

Airborne manganese (Mn) is considered the most hazardous route of exposure since Mn particles can enter into the body through the lung and may access the brain directly through olfactory uptake, thereby bypassing homeostatic excretory mechanisms. Environmental indoor and outdoor manganese concentrations in PM2.5 were monitored in ten rural households from two communities of Hidalgo, Mexico, from 2006 to 2007.

Population health diagnosis with an ecohealth approach.

Objective: To analyze the characteristics of health diagnosis according to the ecohealth approach in rural and urban communities in Mexico.

Methods: Health diagnosis were conducted in La Nopalera, from December 2007 to October 2008, and in Atlihuayan, from December 2010 to October 2011. The research was based on three principles of the ecohealth approach: transdisciplinarity, community participation, gender and equity.

Effect of Personal Exposure to PM2.5 on Respiratory Health in a Mexican Panel of Patients with COPD.

Background: Air pollution is a problem, especially in developing countries. We examined the association between personal exposure to particulate matter with an aerodynamic diameter less than 2.5 µm (PM2.

Association between light absorption measurements of PM2.5 and distance from heavy traffic roads in the Mexico City metropolitan area.

Objective: To study the relationship between light absorption measurements of PM2.5 at various distances from heavy traffic roads and diesel vehicle counts in Mexico City.

Materials And Methods: PM2.

[Validation of reported location of solid waste using Procrustes analysis in the context of a participatory community initiative].

This study is part of a community initiative for integrated solid waste management based on "popular epidemiology" and participatory action research. The study proposes a method for validation of spatial data (X and Y data) on solid waste reported by community members. Location of sites was conducted by 76 residents of the La Nopalera community (Yautepec, Morelos, Mexico) and compared with reports by three environmental health experts.

Traffic-related air pollution and respiratory symptoms among asthmatic children, resident in Mexico City: the EVA cohort study.

Background: Taffic-related air pollution has been related to adverse respiratory outcomes; however, there is still uncertainty concerning the type of vehicle emission causing most deleterious effects.

Methods: A panel study was conducted among 147 asthmatic and 50 healthy children, who were followed up for an average of 22 weeks. Incidence density of coughing, wheezing and breathing difficulty was assessed by referring to daily records of symptoms and child's medication.

Air pollution, airway inflammation, and lung function in a cohort study of Mexico City schoolchildren.

Background: The biological mechanisms involved in inflammatory response to air pollution are not clearly understood.

Objective: In this study we assessed the association of short-term air pollutant exposure with inflammatory markers and lung function.

Methods: We studied a cohort of 158 asthmatic and 50 nonasthmatic school-age children, followed an average of 22 weeks.

Assessment of personal exposure to ozone in asthmatic children residing in Mexico City.

Objective: A study was conducted to evaluate personal ozone exposure (O3p) among asthmatic children residing in Mexico City.

Material And Methods: A total of 158 children were recruited from December 1998 to April 2000. On average, three O3p measurements were obtained per child using passive badges.

Relationship between indoor, outdoor, and personal fine particle concentrations for individuals with COPD and predictors of indoor-outdoor ratio in Mexico city.

Personal exposure and indoor and outdoor exposure to PM(10) and PM(2.5) of 38 individuals with chronic obstructive pulmonary disease (COPD) was characterized from February through November 2000. All participants lived in Mexico City and were selected based on their area of residence southeast (n=15), downtown (n=15), and southwest (n=8).

Omega-3 fatty acid prevents heart rate variability reductions associated with particulate matter.

Context: Environmental exposure to particulate matter of 2.5 microm or less (PM2.5) has been associated with changes in heart rate variability (HRV).

[Environmental PM2.5 levels and distance from a heavy traffic road in Ciudad Juarez, Chihuahua, Mexico].

Objective: To assess PM2.5 levels at different distances from a heavy traffic road.

Material And Methods: Daily measurements of PM2.

[Trends in atmospheric concentrations of lead in the metropolitan area of Mexico city, 1988-1998].

Objective: To describe the trends in airborne lead levels and their association with the control measures implemented from 1988 to 1998 to phase out lead from gasoline that included the introduction of a lead-free gasoline and the use of catalytic converters in automobiles in Mexico City.

Material And Methods: Data of atmospheric lead levels were obtained from the 9 field stations included in the local air quality monitoring network (RMMA). Trends for airborne lead are shown by monitor, monitoring area and for the entire metropolitan zone.