Genetic abnormalities leading to multiple myeloma among Indians studied

Agencies
March 13, 2018

In India, incidence of multiple myeloma affects 1.8 per cent in a population of 100,000. Approximately, 50,000 new cases of multiple myeloma are diagnosed each year. A recent study conducted by CORE Diagnostics reveal that genetic abnormalities are more prevalent among younger median age of 50 years to 70 years, which forms 65 per cent of total multiple myeloma cases.

Out of 1001 cases, 37 per cent were found positive for various abnormalities like; Del13q(RB1), Del17p(TP53), t (4;14), t(11;14), t(14;16), 1q, Hypodiploidy and Hyperdipolidy etc.

The study aimed to find out the frequency of Cytogenetic aberrations in multiple myeloma patients in Indian perspective. The retrospective observational study included 1001 patients falling in the age bracket of 21-90 years and was carried on over a course of three years from January 2015 to January 2018 at CORE Diagnostics.

The study was conducted using Plasma Cell Enrichment Technique, which is a more accurate mechanism for separating plasma cells from other cells during testing. The test has revolutionized genetic analysis and enabled precise determination of the presence and frequency of genetic abnormalities.

“Majority of the studies on genetic aberrations in multiple myeloma include western population. Our study includes 1001 Indian patients, which would help in better understanding of genetic abnormalities among Indian population. We used Plasma Cell Enrichment Technique for the study which is a path breaking technique available at only a handful of centers in India. The results will definitely prove to be beneficial to understand the disease in a better way”, said Dr. Mohit Bhardwaj, PhD Lead Cytogeneticist, CORE Diagnostics.

Multiple myeloma is also known as plasma cell myeloma and is a cancer of plasma cells, a type of white blood cell. Usually, the disease does not exhibit any major symptoms initially and symptoms like bone pain, bleeding, frequent infections andanemia generally occur at a later stage.

The cause of this ailment is still unknown; however, the risk factors include drinking alcohol, obesity, radiation exposure, family history and certain chemicals.

Multiple myeloma involves abnormal plasma cells producing abnormal antibodies which can cause kidney problems and overly thick blood. The plasma cells also sometimes form a mass in the bone marrow or soft tissue. When only one mass is present, it is known as a plasmacytoma while more than one is known as multiple myeloma.

Multiple myeloma is diagnosed using blood or urine samples which help in finding abnormal antibodies. Besides this, bone marrow biopsy helps in finding cancerous plasma cells and medical imaging in finding bone lesions. Although, considered to be a treatable disease, multiple myeloma is generally incurable.

Relief can be derived through chemotherapy, steroids, thalidomide or lenalidomide and stem cell transplant. Bisphosphonates and radiation therapy is also used to reduce pain from bone lesions.

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Agencies
July 7,2020

The World Health Organization (WHO) is reviewing a report that suggested its advice on the novel coronavirus needs updating after some scientists told the New York Times there was evidence the virus could be spread by tiny particles in the air.

The WHO says the Covid-19 disease spreads primarily through small droplets, which are expelled from the nose and mouth when an infected person breaths them out in coughs, sneezes, speech or laughter and quickly sink to the ground.

In an open letter to the Geneva-based agency, 239 scientists in 32 countries outlined the evidence they say shows that smaller exhaled particles can infect people who inhale them, the newspaper said on Saturday.

Because those smaller particles can linger in the air longer, the scientists - who plan to publish their findings in a scientific journal this week - are urging WHO to update its guidance, the Times said.

"We are aware of the article and are reviewing its contents with our technical experts," WHO spokesman Tarik Jasarevic said in an email reply on Monday to a Reuters request for comment.

The extent to which the coronavirus can be spread by the so-called airborne or aerosol route - as opposed to by larger droplets in coughs and sneezes - remains disputed.

Any change in the WHO's assessment of the risk of transmission could affect its current advice on keeping one-metre physical distancing. Governments, which also rely on the agency for guidance policy, may also have to adjust public health measures aimed at curbing the spread of the virus.

"Especially in the last couple of months, we have been stating several times that we consider airborne transmission as possible but certainly not supported by solid or even clear evidence," Benedetta Allegranzi, the WHO's technical lead for infection prevention and control, was quoted as saying in the New York Times.

WHO guidance to health workers, dated June 29, says that SARS-CoV-2, the virus that causes Covid-19, is primarily transmitted between people through respiratory droplets and on surfaces.

But airborne transmission via smaller particles is possible in some circumstances, such as when performing intubation and aerosol-generating procedures, it says.

Medical workers performing such procedures should wear heavy-duty N95 respiratory masks and other protective equipment in an adequately ventilated room, the WHO says.

Officials at South Korea's Centers for Disease Control said on Monday they were continuing to discuss various issues about Covid-19, including the possible airborne transmission. They said more investigations and evidence were needed.

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Agencies
July 2,2020

London, Jul 2: The World Health Organisation says smoking is linked to a higher risk of severe illness and death from the coronavirus in hospitalised patients, although it was unable to specify exactly how much greater those risks might be.

In a scientific brief published this week, the U.N. health agency reviewed 34 published studies on the association between smoking and Covid-19, including the probability of infection, hospitalisation, severity of disease and death.

WHO noted that smokers represent up to 18% of hospitalised coronavirus patients and that there appeared to be a significant link between whether or not patients smoked and the severity of disease they suffered, the type of hospital interventions required and patients' risk of dying.

In April, French researchers released a small study suggesting smokers were at less risk of catching Covid-19 and planned to test nicotine patches on patients and health workers — but their findings were questioned by many scientists at the time who cited the lack of definitive data.

WHO says "the available evidence suggests that smoking is associated with increased severity of disease and death in hospitalized Covid-19 patients. It recommends that smokers quit.

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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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