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Here’s why heart diseases should be made public health priority in India

Agencies
April 7, 2018

New Delhi, Apr 7: Heart Failure is a progressive, debilitating and potentially life-threatening condition, which is responsible for silently killing one-third of patients during hospital admission and one-fourth within 3 months of diagnosis.

On World Health Day 2018, the Cardiological Society of India (CSI) has urged the people to prioritise heart failure as a public health priority. The need of the hour is to develop a comprehensive approach to combat heart diseases in India which is on its way to becoming an epidemic in the country.

Focusing on the ‘Health for all’ theme of World Health Day 2018, the CSI calls for introducing programmes concentrating on screening and detection of symptoms of heart diseases among the rural population as such initiatives need to be scaled up across the country.

It is important that the growing incidence of heart failure should be seen as a public health challenge to further reduce mortality and morbidity due to heart failure. ‘Heart failure’ doesn’t mean that the heart is about to stop working, but it is a potentially life-threatening condition where the heart cannot pump enough blood around the body. This, in most cases, happens because the heart muscle, which is responsible for the pumping action, weakens or stiffens over time.

According to the Non-Communicable Diseases Country Profiles released by the WHO, of the estimated 98.16 lakh deaths in India, NCDs led to nearly 6 million, which is 60% of the total mortality reported annually in the country.

Cardiovascular diseases (CVDs) are the leading cause of mortality, accounting for more than half of all deaths resulting from NCDs. The burden of CVDs is rising at a significantly high rate among middle-income and lower-income geographies.

According to Dr K Sarat Chandra, president, Cardiological Society of India, “Indians have all the reasons to be alarmed over matters of the heart. With the burden of heart failure snowballing in India and the associated high death rates, it is necessary to recognise heart failure as a public health priority in the country. The disease has socio-economic and emotional implications for the patient and his family, impacting the overall quality of life. The need of the hour is for all stakeholders to come together to develop a community-level approach to raise awareness about this condition.”

The increased prevalence of heart diseases in India can be attributed mainly to lifestyle factors like tobacco use, unhealthy diet, physical inactivity and psychosocial stress. Heart failure is a global health problem, affecting about 26 million people worldwide. The disease burden of heart failure is around 10 million in India.

Dr Ambuj Roy, additional professor of cardiology, AIIMS, New Delhi, said, “Untreated Heart Failure is a rapidly progressive and potentially fatal condition, so it is important to recognize the symptoms promptly and get treated at the earliest to prevent a rapidly downhill course. This is especially critical, since there is no way to reverse the damage already done, and treatment helps in containing further damage to the heart and other body organs. Simple medicines and in some cases implantable devices are known to benefit these patients and prolong their survival.”

Data from low-income and middle-income countries like India suggested that mortality in patients with heart failure in these countries is greater than that in high-income countries. It is estimated to have cost about US$100 billion in 2012. The marked variation in mortality is attributed to low awareness, economic disparity, and ease of access to high-quality healthcare facilities, environmental and genetic factors.

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Agencies
August 2,2020

Washington, Aug 2: Children under the age of five have between 10 to 100 times greater levels of genetic material of the coronavirus in their noses compared to older children and adults, a study in JAMA Pediatrics said Thursday.

Its authors wrote this meant that young children might be important drivers of Covid-19 transmission within communities -- a suggestion at odds with the current prevailing narrative.

The paper comes as the administration of US President Donald Trump is pushing hard for schools and daycare to reopen in order to kickstart the economy.

Between March 23 and April 27, researchers carried out nasal swab tests on 145 Chicago patients with mild to moderate illness within one week of symptom onset.

The patients were divided into three groups: 46 children younger than five-years-old, 51 children aged five to 17 years, and 48 adults aged 18 to 65 years.

The team, led by Dr Taylor Heald-Sargent of the Ann & Robert H. Lurie Children's Hospital, observed, "a 10-fold to 100-fold greater amount of SARS-CoV-2 in the upper respiratory tract of young children."

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The authors added that a recent lab study had demonstrated that the more viral genetic material was present, the more infectious virus could be grown.

It has also previously been shown that children with high viral loads of the respiratory syncytial virus (RSV) are more likely to spread the disease.

"Thus, young children can potentially be important drivers of SARS-CoV-2 spread in the general population," the authors wrote.

"Behavioral habits of young children and close quarters in school and daycare settings raise concern for SARS-CoV-2 amplification in this population as public health restrictions are eased," they concluded.

The new findings are at odds with the current view among health authorities that young children -- who, it has been well established, are far less likely to fall seriously ill from the virus -- don't spread it much to others either.

However, there has been fairly little research on the topic so far.

One recent study in South Korea found children aged 10 to 19 transmitted Covid-19 within households as much as adults, but children under nine transmitted the virus at lower rates.

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Agencies
July 8,2020

Scientists have designed a “catch and kill” air filter which they say can trap the novel coronavirus and neutralise it instantly, an invention that may reduce the spread of COVID-19 in closed spaces such as schools, hospitals and health care facilities, as well as public transit environments like airplanes.

According to the study, published in the journal Materials Today Physics, the device killed 99.8 per cent of the novel coronavirus, SARS-CoV-2, in a single pass through its filter. It said the device, made from commercially available nickel foam heated to 200 degrees Celsius, also killed 99.9 per cent of the spores of the deadly bacterium Bacillus anthracis which causes the anthrax disease.

“This filter could be useful in airports and in airplanes, in office buildings, schools, and cruise ships to stop the spread of COVID-19,” said Zhifeng Ren, a co-author of the study from the University of Houston (UH) in the US.

“Its ability to help control the spread of the virus could be very useful for society,” Ren added.

The researchers said they are also developing a desk-top model for the device which is capable of purifying the air in an office worker’s immediate surroundings. According to the scientists, since the virus can remain in the air for about three hours, a filter that could remove it quickly was a viable plan, and with businesses reopening across the world, they believe controlling the spread in air conditioned spaces was urgent.

The study noted that the novel coronavirus cannot survive temperatures above 70 degrees Celsius, so by making the filter temperature far hotter — about 200 degree Celsius, the researchers said they were able to kill the virus almost instantly.

Ren said the nickel foam met several key requirements. “It is porous, allowing the flow of air, and electrically conductive, which allowed it to be heated. It is also flexible,” the researchers noted in a statement.But they added that nickel foam also had low resistivity, making it difficult to raise the temperature high enough to quickly kill the virus.

The researchers said they solved this problem by folding the foam, connecting multiple compartments with electrical wires to increase the resistance high enough to raise the temperature as high as 250 degrees Celsius. By making the filter electrically heated, rather than heating it from an external source, they said the the amount of heat that escaped from the filter is minimised, allowing air conditioning to function with very low strain.

When the scientists built and tested a prototype for the relationship between voltage/current and temperature, they said it satisfies the requirements for conventional heating, ventilation, and air conditioning (HVAC) systems, and could kill the coronavirus.

“This novel biodefense indoor air protection technology offers the first-in-line prevention against environmentally mediated transmission of airborne SARS-CoV-2, and will be on the forefront of technologies available to combat the current pandemic and any future airborne biothreats in indoor environments,” said Faisal Cheema, another co-author of the study from UH.

The researchers have called for a phased roll-out of the device, “beginning with high-priority venues, where essential workers are at elevated risk of exposure.” They believe the novel device will both improve safety for frontline workers in essential industries and allow nonessential workers to return to public work spaces.

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Agencies
June 22,2020

A team of scientists has produced first open source all-atom models of full-length COVID-19 Spike protein that facilitates viral entry into host cells – a discovery that can facilitate a faster vaccine and antiviral drug development.

The group from Seoul National University in South Korea, University of Cambridge in the UK and Lehigh University in the US produced the first open-source all-atom models of a full-length S protein.

The researchers say this is of particular importance because the S protein plays a central role in viral entry into cells, making it a main target for vaccine and antiviral drug development.

"Our models are the first full-length SARS-CoV-2 spike (S) protein models that are available to other scientists," said Wonpil Im, a professor in Lehigh University.

"Our team spent days and nights to build these models very carefully from the known cryo-EM structure portions. Modeling was very challenging because there were many regions where simple modeling failed to provide high-quality models," he wrote in a paper published in The Journal of Physical Chemistry B.

Scientists can use the models to conduct innovative and novel simulation research for the prevention and treatment of Covid-19.

Though the coronavirus uses many different proteins to replicate and invade cells, the Spike protein is the major surface protein that it uses to bind to a receptor.

The total number of global COVID-19 cases was nearing 9 million, while the deaths have increased to over 467,000, according to the Johns Hopkins University.

With 2,279,306 cases and 119,967 deaths, the US continues with the world's highest number of COVID-19 infections and fatalities, according to the CSSE.

Brazil comes in the second place with 1,083,341 infections and 50,591 deaths.

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