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  • Early Exposure To Air Pollution May Make Children Prone To Allergies : Study

Air Pollution

Early Exposure To Air Pollution May Make Children Prone To Allergies : Study

The research, published in the journal Pediatric Allergy & Immunology, explores how different exposures during pregnancy birth or childhood modulate asthma related immune responses in children

ANI |
November 26, 2018
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Washington D.C.: Environmental exposures – such as obstetric factors, farm dust and air pollution – early in life can modify immune responses in adolescents. The University of Eastern Finland research has been published in the journal Pediatric Allergy & Immunology. There is strong evidence that different exposures early in life can alter the risk of allergic diseases. One of these exposures is farming. Exposure to the farm environment in childhood, and even prenatally, has been shown to decrease the risk of allergic diseases.

On the other hand, being born by caesarean section is recognised as a risk factor. The roles of other obstetric factors are less studied. Another harmful exposure is air pollution, and especially exposure to particulate matter, which has been shown to increase asthma prevalence and exacerbations in children. However, the underlying mechanisms are unclear, causing a delay in the development of asthma-preventive strategies.

Also Read: People Know About Air Pollution But Lack Awareness About Cause And Effect: Study

Earlier studies have shown that immunological development and maturation starts already during pregnancy and in early childhood. Therefore, exposure at this critical point of immune development may modify immune responses and cells, and thus influence the risk of allergies and other immune diseases.

The study explored how different exposures during pregnancy, birth or childhood modulate asthma-related immune responses in children. The study focused on three different exposures: one that is asthma-protective (farming) and two that predispose to asthma (caesarean section and air pollution).

“We studied whether circulating dendritic cells associate with farming, asthma or atopy, whether obstetric factors affect immune responses at teenage in children born by caesarean section, and whether farm dust and urban air particulate matter have immunomodulatory effects on children’s circulating immune cells,” said Maria-Viola Martikainen.

Also Read: Delhi’s Air Quality Was Most Deadly In 2016 In Two Decades, Reduced Life Expectancy By 10 Years: Study

The studied environmental exposures were associated with asthma-related immune responses. Inverse association between farm exposure and one of the subsets studied, and the association between this subset and asthma in farm children, suggested that this subset plays a role in farm-related immune regulation.

On the other hand, the lack of natural birth processes during delivery and neonatal intensive care treatment seemed to lead to long-lasting alterations of immune responses. The observed stimulatory effects of farm dust and inhibitory effects of particulate matter on immune responses indicate that these exposures could modify responses towards respiratory pathogens and allergens, and partly explain differences in asthma prevalence between the studied environments.

Also Read: Delhi Based Start-up Has Developed World’s First Helmet With Air Purifier To Combat Pollution

The study demonstrated associations between diverse early life exposures and immune responses, both ex vivo and in vitro. Some changes in immune responses seemed to be observable up to teenage. The study revealed some of the potential immunological mechanisms behind different exposures and advanced knowledge of immune mechanisms that either protect from or predispose to asthma.

NDTV – Dettol Banega Swachh India campaign lends support to the Government of India’s Swachh Bharat Mission (SBM). Helmed by Campaign Ambassador Amitabh Bachchan, the campaign aims to spread awareness about hygiene and sanitation, the importance of building toilets and making India open defecation free (ODF) by October 2019, a target set by Prime Minister Narendra Modi, when he launched Swachh Bharat Abhiyan in 2014. Over the years, the campaign has widened its scope to cover issues like air pollution, waste management, plastic ban, manual scavenging and menstrual hygiene. The campaign has also focused extensively on marine pollution, clean Ganga Project and rejuvenation of Yamuna, two of India’s major river bodies.

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