Thursday November 21, 2019

Delhi seconds Lucknow in low air quality measure

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New Delhi:  Air pollution in Delhi continued to choke its residents on Monday with the air quality index (AQI) touching the dangerous 408 mark.

The drop in air quality prompted environment experts to urge the government to issue health advisories.

The AQI of Delhi was second only to Lucknow, whose figure stood at 421, making it the city with the poorest air quality.

“The situation is really very bad and the quality of air in the coming days is going to be the same following the smog and stagnancy in the air,” Vivek Chattopadhyaya of green think tank Centre for Science and Environment (CSE) told reporters.

He urged the government to issue health advisories, as several people will suffer from breathing issues if the air quality remains the same.

The AQI of Delhi’s adjoining areas also remained severe at the 405 mark.

Residents complained of breathing problems due to the poor air quality.

Priyanka Rai, a student of Delhi University who has to travel from west Delhi’s Punjabi Bagh to Delhi University in the north, said, “I have never had breathing problems, but now I feel pain in my chest every time I step out of my house.”

Anjali Mirchandani of the South Delhi Municipal Corporation said, “I, being an asthma patient, have been using a mask every day while travelling to my office. My visits to doctors have increased.”

(IANS)

(Picture credit:www.huffingtonpost.in )

 

 

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Exposure to Air Pollution May Trigger Alzheimer’s in Aged Women, Reveals Research

"Our hope is that by better understanding the underlying brain changes caused by air pollution, researchers will be able to develop interventions to help people with or at risk for cognitive decline," Petkus added

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Alzheimer's
A lady suffering from Alzheimer's. Flickr

Women in their 70s and 80s who were exposed to higher levels of air pollution experienced greater declines in memory and more Alzheimer’s-like brain atrophy than their counterparts who breathed cleaner air, new research has revealed.

“This is the first study to really show, in a statistical model, that air pollution was associated with changes in people’s brains and that those changes were then connected with declines in-memory performance,” said study researcher Andrew Petkus, the Assistant Professor University of South California in the US.

Previous research has suggested that fine particle pollution exposure increases the risk for Alzheimer’s disease and related dementias.

What scientists haven’t known is whether PM2.5 alters brain structure and accelerates memory decline.

For the study, published in the journal Brain, researchers used data from 998 women, aged 73 to 87, who had up to two brain scans five years apart as part of the landmark Women’s Health Initiative launched in 1993 by the US National Institutes of Health and enrolled more than 160,000 women to address questions about heart disease, cancer, and osteoporosis.

"The question for us now is not how to eliminate cholesterol from the brain, but about how to control cholesterol's role in Alzheimer's disease through the regulation of its interaction with amyloid-beta," Vendruscolo said.
In Alzheimer’s disease, patients start losing memory. Pixabay

Those brain scans were scored on the basis of their similarity to Alzheimer’s disease patterns by a machine learning tool that had been “trained” via brain scans of people with Alzheimer’s disease.

The researchers also gathered information about where the 998 women lived, as well as environmental data from those locations to estimate their exposure to fine particle pollution.

When all that information was combined, researchers could see the association between higher pollution exposure, brain changes and memory problems — even after adjusting to taking into account differences in income, education, race, geographic region, cigarette smoking, and other factors.

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“This study provides another piece of the Alzheimer’s disease puzzle by identifying some of the brain changes linking air pollution and memory decline. Each research study gets us one step closer to solving the Alzheimer’s disease epidemic,” Petkus said.

“Our hope is that by better understanding the underlying brain changes caused by air pollution, researchers will be able to develop interventions to help people with or at risk for cognitive decline,” Petkus added. (IANS)