Antibiotics Resistance

Jul, 09, 2018

Fish samples in Chennai test positive for formalin

Note4students

Mains Paper 3: Environment | Conservation, environmental pollution and degradation, environmental impact assessment

From UPSC perspective, the following things are important:

Prelims level: Formalin

Mains level: Contamination of food items is a cause of concern.


News

Formalin – a carcinogen, traces in Fishes

  1. As many as 11 out of 30 samples of fish species purchased from two major fish markets in Chennai, on two different days, have tested positive for formalin, a cancer-inducing chemical used illegally to preserve fish.
  2. Both big and small lizardfish or Panna or kezhanga and paarai (Malabar trevally) were found to have formalin content of above 20 ppm (parts per million).
  3. Other varieties such as sura, octopus, eri vavvaal, ottu kanava, peikanava and kelithi had formalin of around 5 ppm.

Particulars of the Test

  1. For the test, a two-gram piece of meat from the fish was taken and put inside four ml of diluent and shaken so that the formalin will get into it.
  2. Then this diluent was poured into the bottle containing the reagent that turned yellow revealing that it had tested positive.
  3. It is a very sensitive reagent and can detect up to 0.5 milligram per kilo. The actual test takes only 10 minutes.
  4. Food Safety and Standards Authority of India (FSSAI) have been undertaking tests at fish markets and harbours across the State to test for formalin following a scare in neighbouring Kerala that fish sourced from here were chemically contaminated.

Why use Formalin?

  1. Usually, people who buy fish check the gills for freshness, if it is red it denotes freshness when formalin is used the gills remain red for longer periods.
  2. In some cases, fishermen also apply kumkum to retain redness.

Back2Basics

Formalin

  1. Formalin is 30-45% aqueous solution of Formaldehyde with water.
  2. Formaldehyde is a simple chemical compound made of hydrogen, oxygen and carbon.
  3. All life forms – bacteria, plants, fish, animals and humans – naturally produce formaldehyde as part of cell metabolism.
  4. Formaldehyde is perhaps best known for its preservative and anti-bacterial properties, but formaldehyde-based chemistry is used to make a wide range of value-added products.
  5. Formalin causes irritation in the eyes, throat, skin and stomach. In the long run, continued exposure causes harm to the kidneys, liver and can even cause cancers.
  6. In the fishing industry, formalin or formaldehyde is sprayed on the fish or injected into the fish or the fish is dipped into the solution. This helps keep the fish fresh for a longer time.
Jan, 31, 2018

A game of chicken: how India’s poultry farms are spawning global superbugs

Note4students

Mains Paper 3: Science & Technology | developments & their applications & effects in everyday life

From UPSC perspective, the following things are important:

Prelims level: Colistin, MCR-1, NDM-1,

Mains level: Rising threat of drug resistance


News

Towards worldwide drug resistance

  1. India has been called the epicenter of the global drug resistance crisis
  2. Chickens in numerous poultry farm are being given Colistin, to protect them against diseases or to make them gain weight faster
  3. Doctors call Colistin the ‘last hope’ antibiotic
  4. It is used to treat patients critically ill with infections which have become resistant to nearly all other drugs
  5. It is the only drug to treat critically ill patients with a carbapenem-resistant infection

WHO ban 

  1. The World Health Organisation has called for the use of such antibiotics to be restricted to animals
  2. These should be banned as growth promoters

Why stopping their use is necessary?

  1. Their continued use in farming increases the chance that bacteria will develop resistance to them
  2. They would be useless when treating patients

Easy access enabling overuse?

  1. There is no legal requirement (prescription etc.) for buying Colistin in the country
  2. In Europe, colistin is available to farmers only if prescribed by a vet for the treatment of sick animals

Colistin-resistant gene

  1. MCR-1 is one such gene discovered recently
  2. It could be transferred within and between species of bacteria
  3. This means that microbes did not have to develop resistance themselves, they could become resistant just by acquiring the MCR-1 gene
  4. The resistance could be passed to bugs which are already multi-drug resistant
  5. This could lead to untreatable infections
  6. Another such gene is New Delhi Metallo-beta-lactamase 1 (NDM-1), which makes bugs resistant to carbapenem antibiotics

Drug resistance a big threat

  1. Drug resistance has been called one of the biggest threats to global health, food security, and development
  2. If antimicrobials stop working, doctors won’t have effective drugs to treat deadly infections
  3. Common procedures like joint replacements, Caesarean sections, organ transplants and chemotherapy could also become too risky to carry out
Dec, 09, 2017

[op-ed snap] Living in a world of emerging microbial resistance

Image source

Note4students

Mains Paper 3: Science & Technology | developments & their applications & effects in everyday life

From UPSC perspective, the following things are important:

Prelims level: Antimicrobial Resistance, ANSWER, NDM-1

Mains level: 2017 National Action Plan on Antimicrobial Resistance


Context

2017 National Action Plan on Antimicrobial Resistance

  1. For the first time, the 2017 National Action Plan on Antimicrobial Resistance talks about limiting antibiotics in effluent being dumped by drug makers into the environment
  2. This is because when these drugs taint soil and water, the scores of microbes that live there grow drug-resistant
  3. Until now, India’s fight against antibiotic-resistance was focussed on getting people to cut down on unnecessary antibiotic consumption

Why is resistance among microbes a problem?

  1. The answer lies in the intimacy shared between environmental bacteria and human pathogens
  2. A pathogen, say Klebsiella pneumoniae (K. pneumoniae), that causes pneumonia, can take two routes to antibiotic resistance
  3. The first is for its own genes to mutate spontaneously to help fight the drug
  4. The second route, a shortcut known as horizontal gene transfer, is for the bug to borrow resistance genes from its neighbours
  5. Scientists believe that many human pathogens today picked up their resistance genes from the environment through this shortcut

Phenomenon of anti-microbial resistance not new

  1. Phylogenetic studies suggest that the earliest antibiotic-resistance genes in nature are millions of years old
  2. But when humans started manufacturing antibiotics in the 1950s, a dramatic shift occurred
  3. Large doses of these drugs seeped into the environment through poultry and human excreta, and waste water from drug makers and hospitals
  4. This led to an explosion of resistance genes in soil and water microbes

European project ANSWER

  1. It stands for ‘Antibiotics and mobile resistance elements in wastewater reuse applications: risks and innovative solutions’
  2. This project studies technologies to remove antibiotic-resistance germs from wastewater along with other research

Need to worry

  1. If India doesn’t move quickly, wastewater in pharma clusters could give rise to new genes as dangerous as NDM-1
  2. New Delhi metallo-beta-lactamase 1 (NDM-1) was a deadly resistance gene
  3. Once such genes jump to humans, they will, no doubt, blaze their way across the planet
  4. It will be a death sentence for Indians as well as thousands across the globe

We had covered a similar op-ed in November that talked about antibiotic resistance rising in Hyderabad due to phrama companies dumping drugs in water bodies. Read it here

Sep, 16, 2016

Babies fall victim to antibiotic resistance

  1. Source: The Lancet
  2. Infected with superbugs in birth facilities within 72 hours of being born, thousands of Indian babies are dying due to an alarming degree of drug resistance
  3. Nearly 26% of babies with sepsis died, as multi drug resistance made the ailment untreatable
  4. Three superbugs: Klebsiella, Acinetobacter and E. coli are associated with more than half (53%) of the infections
  5. Why? This worrying epidemic-like situation is a result of overuse of antibiotics in humans, agriculture and livestock

Discuss: What is anti-microbial resistance? What are the reasons for it? What steps has been taken in India and what more needs to be done?

May, 20, 2016

India lauded for Red Line Campaign on antibiotics

  1. Context: The global Review on Antimicrobial Resistance, a report on tackling drug resistant infection
  2. Finding: 20-30 per cent of antibiotics are consumed without prescription in south and east Europe and up to 100 per cent in parts of Africa
  3. India’s Red line campaign: (launched in Feb 2016) is finding recognition, and could be adopted globally
  4. It should be considered as starting point of restriction over use of antibiotics
  5. Aim: To decrease the use of Red line antibiotics without prescription, create awareness of danger of taking antibiotics
May, 20, 2016

Report warns of mass death from superbugs

  1. Context: Review on Antimicrobial Resistance, commissioned by the British government
  2. Superbugs: Emerge when infections become immune to existing drug, allowing minor injuries and common infections to become deadly
  3. Emergency: Ten million people could die by 2050 unless sweeping global changes are agreed to tackle increasing resistance to antibiotics
  4. Threat: It needs to be seen as the economic and security threat that it is, and be at the forefront of the minds of heads of state
  5. Steps: The overuse of antibiotics should be reduced by cutting the vast quantities of medicines given to farm animals
  6. Also, improving diagnoses to stop unnecessary prescriptions, a global public awareness campaign
Apr, 12, 2016

New front opens in war on superbugs

  1. Context: Increasing anti-biotic resistance and shrinking range of antibiotics to treat a wide variety of ailments
  2. News: A newly-discovered antibiotic-resistant gene “mcr-1” is threatening to open a new front in the war against superbugs by rendering a last-resort drug impotent
  3. Reason: The gene is resistant to colistin, a life-saving medication which has been around for 60 years
  4. MCR-1: It is the resistance-conferring gene which easily transfers between bacteria found in humans, animals or the environment
Sep, 11, 2015

WHO urges action against antibiotic resistance

  1. Cautioning against the indiscriminate use of antibiotics and other drugs which leads to resistance to medicines and treatment failure.
  2. Resistance to antibiotics will make complex surgeries and management of several chronic illnesses like cancer, extremely difficult.
  3. Estimates said ,antibiotic resistance will be responsible for 10 million deaths annually by 2050.
  4. Its economic cost will result in a 2 to 3.5-per cent decrease in global GDP to same year.
  5. Reduced productivity from persisting illness, and its cost of treatment, will add to the economic loss.
Apr, 17, 2015

Antibiotics in the food we eat

  1. This is an old article, sourced from Sept 2014 – but the issue of antibiotics in the food we eat has risen up again.
  2. Early ripening of Banganapalli mangoes (also called Benishan or spotless) is done by using calcium carbide, which generates the ripening gas ethylene.
  3. Oxytocin in milk – A hormone that supposedly increases milk output in cows.
  4. The use of antibiotics in the feed given to the chicken for faster growth and to prevent any infection during hatching.
Apr, 14, 2015

52% Indians indulge in self-medication

  1. Over 52% Indians indulge in self-medication. Why? Either because of time constraints or the perception of doing away with the doctors’ fees.
  2. Un-prescribed medicines are known to make the body resistant to antibiotics besides causing health problems.
  3. Do you remember the term Antimicrobial Resistance (AMR)?
  4. It is a broader term for resistance in different types of microorganisms and encompasses resistance to anti (bacterial, viral, parasitic & fungal) drugs.
  5. What causes this? Taking substandard doses or not finishing a prescribed course of treatment.
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