spp. and spp. as reservoirs of carbapenemase and resistance genes in hospital wastewater.

Unlabelled: Antibiotic resistance has emerged as a global threat to public health, generating a growing interest in investigating the presence of antibiotic-resistant bacteria in environments influenced by anthropogenic activities. Wastewater treatment plants in hospital serve as significant reservoirs of antimicrobial-resistant bacteria, where a favorable environment is established, promoting the proliferation and transfer of resistance genes among different bacterial species. In our study, we isolated a total of 243 strains from 5 hospital wastewater sites in Mexico, belonging to 21 distinct Gram-negative bacterial species.

Pesticide use patterns and their association with cytokine levels in Mexican flower workers.

Objective: Occupational exposure to pesticides is a known risk for disrupting cellular immune response in flower workers due to their use of multiple chemical products, poor work conditions, and inadequate protection. Recently, the analysis of pesticide use patterns has emerged as an alternative to studying exposure to mixtures of these products. This study aimed to evaluate the association between exposure to different patterns of pesticide use and the cytokine profile of flower workers in the State of Mexico and Morelos, Mexico.

[Not Available].

Objetivo: Analizar la interpretación e implementación de las políticas para la vigilancia de la salud de los trabajadores del programa para el control de vectores en México. Material y métodos. Se realizó un estudio transversal con métodos mixtos en cuatro estados de México; se incluyen entrevistas semiestructuradas, recolección de datos sobre los plaguicidas aplicados y los resultados del biomonitoreo realizado a los trabajadores y obtenidos de los registros estatales.

Neurocognitive function in adult residents of a mining district in Mexico after reducing manganese exposure: Follow-up after 11 years.

Background: Little is known about the neurotoxic effects of chronic exposure to airborne Mn once exposure has been reduced. The environmentally exposed and the reference adult populations evaluated in 2002 were followed, after an environmental management program (EMP) was implemented to reduce the exposure in a mining district in Mexico.

Objective: The aim of this study was to compare the association between exposure to Mn and neurocognitive performance in environmentally exposed and reference groups of adults before and after EMP implementation.

[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.

Opioids, stimulants, and depressant drugs in fifteen Mexican Cities: A wastewater-based epidemiological study.

Background: Monitoring drug use in México is a challenge due to emerging drugs and rapid changes in consumption patterns. The temporal and geographical patterns of cocaine, methamphetamine, amphetamine, MDMA, cannabis, heroin, ketamine, and fentanyl were examined in Mexican cities using wastewater-based epidemiology (WBE).

Methods: 105 daily composite wastewater samples were collected from sewage treatment plants in fifteen Mexican cities.

[Quick review: air pollution and morbi-mortalityby Covid-19.].

Objective: To analyze the evidence on the relationship between air pollution and an increased risk of morbidity and mortality from Covid-19.

Materials And Methods: An adaptation of the Cochrane rapid review methodology was used. The search was performed in PubMed and MedRxiv and was limited until April 28 and 26, respectively.

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.

Verbal Memory and Learning in Schoolchildren Exposed to Manganese in Mexico.

Manganese (Mn) is an essential nutrient for cellular function, but in high concentrations, it is neurotoxic. Environmental exposure to Mn has been associated with cognitive effects in children. This study aimed to assess the effect of environmental exposure to Mn on verbal memory and learning in schoolchildren residents from two municipalities in the state of Hidalgo, Mexico.

Healthy-Sustainable Housing Index: A Pilot Study to Link Architecture and Public Health in a Semi-Urban Community in Mexico.

The aim of this pilot study was to evaluate the link between housing and children´s respiratory symptoms, through the construction of an index (HSHI) based on the definition of healthy-sustainable housing criteria, in a semi-urban community from Morelos, Mexico. A general and household questionnaire, and respiratory symptoms diary were applied in 60 households to gather information about schoolchildren, respiratory health, housing and lifestyle characteristics. HSHI was constructed using principal component analysis.

Occupational predictors of urinary dialkyl phosphate concentrations in Mexican flower growers.

Background Flower growers have high potential for exposures to pesticides. Occupational factors, such as tasks performed, the production method (organic or conventional), the use of personal protective equipment (PPE), and workplace characteristics influence the intensity of pesticide exposure. Objective To evaluate occupational characteristics affecting urinary concentration of dialkylphosphate (DAP) metabolites of organophosphate pesticides among a group of Mexican floricultural workers.

Factors that enable or limit the sustained use of improved firewood cookstoves: Qualitative findings eight years after an intervention in rural Mexico.

Objective: The aim of this study was to analyze the factors enabling/limiting the use of improved cookstoves among rural fuel wood users from one mestizo and two indigenous communities eight years after an intervention in the state of Michoacan, in Mexico.

Methods: A qualitative study with an ethnographic perspective was conducted in 2013/2014 based on 62 interviews with women who had participated in an improved firewood cookstove program in 2005. Thematic qualitative content analysis was performed.

Intrinsic superoxide dismutase activity of MnO nanoparticles enhances the magnetic resonance imaging contrast.

Superoxide radicals are associated with the development of many severe diseases, such as cancer. Under nonpathogenic conditions, the natural enzyme superoxide dismutase (SOD) regulates the intracellular superoxide concentrations, but nearly all tumor tissues show reduced SOD levels. Selective imaging in early progression stages remains a key requirement for efficient cancer diagnosis and treatment.

Effects of manganese exposure on visuoperception and visual memory in schoolchildren.

Background: Manganese (Mn) is an essential metal involved in multiple physiological functions. Environmental exposure to airborne Mn is associated with neurocognitive deficits in humans. Children, whose nervous system is in development, are particularly susceptible to Mn neurotoxicity.

Dissonant health transition in the states of Mexico, 1990-2013: a systematic analysis for the Global Burden of Disease Study 2013.

Background: Child and maternal health outcomes have notably improved in Mexico since 1990, whereas rising adult mortality rates defy traditional epidemiological transition models in which decreased death rates occur across all ages. These trends suggest Mexico is experiencing a more complex, dissonant health transition than historically observed. Enduring inequalities between states further emphasise the need for more detailed health assessments over time.

Silica-coated Au@ZnO Janus particles and their stability in epithelial cells.

Multicomponent particles have emerged in recent years as new compartmentalized colloids with two sides of different chemistry or polarity that have opened up a wide field of unique applications in medicine, biochemistry, optics, physics and chemistry. A drawback of particles containing a ZnO hemisphere is their low stability in biological environment due to the amphoteric properties of Zn. Therefore we have synthesized monodisperse Au@ZnO Janus particles by seed-mediated nucleation and growth whose ZnO domain was coated selectively with a thin SiO layer as a protection from the surrounding environment that imparts stability in aqueous media while the Au domain remained untouched.

The P3a wave: A reliable neurophysiological measure of Parkinson's disease duration and severity.

Objective: The P3a is an event-related potential (ERP) associated with involuntary attention and dopaminergic function. As P3a is reduced at initial stages of Parkinson's disease (PD), our objective was to assess P3a as a possible marker of PD duration and severity.

Methods: Fifty-five patients were analyzed, 28 of which were at Hoehn and Yahr severity stage 1; 14 at stage 2; and 13 at stage 3.

Children's Respiratory Health After an Efficient Biomass Stove (Patsari) Intervention.

Household use of fuelwood represents a socio-ecological condition with important health effects mainly in rural areas from developing countries. One approach to tackle this problem has been the introduction of efficient wood-burning chimney stoves. The aim of this study was to assess the impact of the introduction of Patsari stoves on the respiratory health of young children in highlands Michoacán, Mexico.

[Environmental health in Mexico: current situation and future prospects].

Environmental health has been established in Mexico as a discipline since the early nineties resuming the sanitarian tradition developed over the past century and incorporating new knowledge generated by environmental toxicology and epidemiology. During the last decade there has been some progress in reviewing and updating the regulations, designing programs and policies to reduce exposure to pollutants and consolidating research groups and teaching in the area. However, the most prevalent problems previously diagnosed still remain and new risks have emerged due to environmental degradation (air pollution, toxics exposure and climate change among others) have been incorporated.

Lung function, airway inflammation, and polycyclic aromatic hydrocarbons exposure in mexican schoolchildren: a pilot study.

Objective: To determine the association of exposure to polycyclic aromatic hydrocarbons (PAHs) with lung function and pH of exhaled breath condensate (EBC) in Mexican schoolchildren.

Methods: A pilot study was performed in a subsample of 64 schoolchildren from Mexico City. Lung function and pH of EBC were measured and metabolites of PAHs in urine samples were determined.

Multifunctional two-photon active silica-coated Au@MnO Janus particles for selective dual functionalization and imaging.

Monodisperse multifunctional and nontoxic Au@MnO Janus particles with different sizes and morphologies were prepared by a seed-mediated nucleation and growth technique with precise control over domain sizes, surface functionalization, and dye labeling. The metal oxide domain could be coated selectively with a thin silica layer, leaving the metal domain untouched. In particular, size and morphology of the individual (metal and metal oxide) domains could be controlled by adjustment of the synthetic parameters.

[Local conditions of vulnerability associated with dengue in two communities of Morelos].

Objective: To evaluate the vulnerability associated with the occurrence of dengue in two villages of Morelos, Mexico from 2006 to 2009. MATERIALS AND METHODS. A survey on knowledge, risk perception, prevention practices and water use was applied in two villages of Morelos.

Catechol-initiated polyethers: multifunctional hydrophilic ligands for PEGylation and functionalization of metal oxide nanoparticles.

Bifunctional CA-PEG (catechol-poly(ethylene glycol)) and multifunctional CA-PEG-PGA/PEVGE (poly(glycidyl amine)/poly(ethylene glycol vinyl glycidyl ether)) ligands for the functionalization and solubilization of nanoparticles are introduced. Tunable polymers with polydispersities <1.25 and molecular weights in the range 500-7700 g mol(-1) containing a catechol moiety for conjugation to metal oxide nanoparticles were prepared.

Effect of environmental manganese exposure on verbal learning and memory in Mexican children.

Manganese (Mn) is an essential metal, but in excess it becomes neurotoxic. Children's developing nervous system may be especially vulnerable to the neurotoxic effects of overexposure to this metal. The aim of this study was to assess the effect of Mn exposure on verbal memory and learning in 7- to 11-year-old children.