Peter Mansfield, the man who developed the science of
medical resonance (MR) imaging, died recently. He was an extraordinary
person born in the most ordinary circumstances. His father was a
gas-fitter and mother was a waitress. He was born in London, and
schooling stopped abruptly when World War broke out. Part-time classes
led him inexorably through a degree in Physics, and finally a PhD. As a
PhD student, he discovered that in some solids, excitation after NMR
radio pulses led to a solid echo. The complex math behind this discovery
caught the interest of NMR pioneer Charles Slichter, who invited
Mansfield for a postdoc at the University of Illinois. It was later
while working in the University of Nottingham, he realized that NMR
could be used as an alternative to X-rays to image biological
tissues.
In 1977, the first human tissue was imaged using NMR
– a student’s finger. This helped to get grants for a whole body imaging
magnet. In 1978, when the new MR imager was built, people were worried
whether the strong magnetic fields would cause a heart attack. Mansfield
volunteered to be the first human to get his abdomen imaged. The rest is
history. The first MR imager for clinical use was built in 1980 in the
University of Aberdeen, and it was in the markets by 1984. He was
knighted in 1993, and received the Nobel Prize for Medicine in 2003. MR
imaging has transformed medicine, and scientist behind this will not be
easily forgotten. (Nature 8 March 2017)
Fighting for Bedaquiline
An 18-year-old girl from Patna suffers from
extensively drug-resistant (XDR) tuberculosis (TB). As access to
Bedaquiline is restricted and available from only six government run
health facilities in India, she applied to the The National Institute of
Tuberculosis and Respiratory Diseases in New Delhi. However, she was
refused because of lack of domicile. Her father launched legal action,
and was also supported by XDR-TB expert Jennifer Furin from Harvard
Medical School. The courts voted in the girl’s favor and revoked the
Ministry of Health’s decision on January 19, 2017. The New Delhi high
court has ordered that bedaquiline and other drugs that complete her
regimen must be immediately provided to the girl. It has also smoothed
the way for other patients in her position by removing the clause of
domicile for access to the drug. Encouraged by the court’s intervention,
health advocates are also seeking inclusion of delamanid, another new
drug for treatment of multi- and extensively-drug-resistant TB in the
Revised National Tuberculosis Control Program (RNTCP). A careful balance
between access and close regulation of new drugs to prevent resistance
and monitor for adverse effects is needed.
Another recent development has been the Supreme
Court’s injunction to the government to introduce a daily fixed-dose
regimen, replacing the current intermittent therapy for all patients of
tuberculosis. The health ministry says that it needs nine months to roll
out the new plan. (The Lancet 3 February 2017, The Lancet 18 February
2017)
The State of the Global Air 2017
India and China contribute to 52% of global deaths
due to air pollution. Exposure to ambient fine particulate matter PM
levels. It is reported that air pollution contributed to the death of
1.1 million people in India in 2015. Coal fired power plants are
considered to contribute to 50% of this pollution.
The effect of air pollution on children’s lungs is
especially deadly. According to the WHO, more than 1 in 4 deaths of
children under five years of age are attributable to unhealthy
environments. About 11–14% of children aged 5 years currently report
asthma symptoms, and an estimated 44% of these are related to
environmental exposures.
So far the focus has been only on big metros like Delhi. However, in
the list of 20 most polluted cities of the world, 10 were from India and
included Allahabad, Kanpur, Firozabad and Lucknow. We need a nationwide,
concerted strategic plan to combat this invisible menace. (The Hindu
22 February 2017, The Lancet 25 February 2017,
https://www.stateofglobalair.org/sites/default/files/SOGA2017_
report.pdf ).