BackgroundThe Mexicali valley with intense agricultural and industrial activities has among its community a high incidence of allergenic diseases and one of the causes could be suspended particles including pollen and spores. Unfortunately, there are not backgrounds for aerobiological analyses, being Mexicali a city where the levels of atmospheric contamination have exceeded the air quality standards (Reyna, 2006). This situation has led studies to determine the impact of concentrations of air pollutants including spores as causal agents in allergies and respiratory diseases.MethodThree periods of sampling have been carried out. The first sampling in 2005 with Rotorod equipment; the quantitative parameters were diversity, volume, and frequency of spores, as well as its relation with meteorological factors, like average temperature, relative humidity, and precipitation; a second study was performed in 2008, with same parameters and equipment. In 2011 new sampling is performed by using the Burkard sampler which includes same parameters as the first and second sampling.ResultsIn 2005 the most abundant types were Alternaria 3,419/m3 with greater representativeness in August (24.81%); the same to Bipolaris 1,846/m3 (22%); Stemphylium 1197/m3 with greater presence in February (15%); temperature and relative humidity were correlated with the presence of spores being an association linear loss; the correlation in annual tendency is smaller, related to the seasonal monthly correlation; correlation of cold season is greater than correlation of the warm season. A study carried out in 2008 showed, high incidence of Cladosporium, on April 57, 32%. Same month in the first sampling only 15.11%. In 2011 richness of Ascospora, Cladosporium and Periconia, showed very different results the same months but sampling in 2005 and 2008.ConclusionsThe studies show different data related with type and richness on same months. Data obtained in the first study correlated the relationship between air pollution caused by fungal spores and the incidence of childhood asthma in Mexicali (de la Fuente, 2009).
Air pollution has affected human life progressively since its sources of origination. It is present in all cities around the world. It has caused harm to humans and other living organisms. This situation has led studies to determine the impact of concentrations of air pollutants in the respiratory ailments. Mexico has developed similar investigations, but unlike other countries' advanced studies on pollutants aerobiology, Mexico's studies have not been conducted in depth, and there is virtually no research work that identifies the air pollutants of fungal spores and their association with respiratory disorders in children. The purpose of this article is to analyze the relationship between air pollution by fungal spores, and the incidence of childhood asthma in Mexicali, Baja California, Mexico. Diagnostics of asthma on children living in the city of Mexicali that received medical care were studied. The records of weather and climatic variables were provided by the Department of Meteorology at the Engineering Institute of UABC. The data of air pollution caused by fungal spores were obtained in three monitoring stations with collectors' rotation and impact of sampling. Mainly four groups of different spores (Alternaria sp., Cladosporiun sp., Bipolaris and Stemphylium) were registered in the atmosphere of Mexicali, with an average of 515 spores/m 3 and a standard deviation of 248 spores/m 3 . The average annual relative humidity was 42.3%. The average temperature showed two different facets; a hot season with temperatures between 22ºC and 44ºC, and a cold season with temperatures between 8.9ºC and 22ºC. The incidence of childhood asthma presented a rate twice the national average (505 cases/one hundred thousand children). The multiple linear regression model proposed showed a significant relationship with a R2=0.86 (p=0.5), which established a direct association between air pollution by fungal spores, and the incidence of childhood asthma.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.