Monday, June 13, 2022

Karl Landsteiner 1930 Nobel Laurate discovered human blood groups in 1900

Karl Landsteiner discovered human blood groups in 1900 and laid the foundation for the modern medical practice of blood transfusion. Karl Landsteiner was born in Vienna on June 14, 1868 and died on June 26, 1943.


Landsteiner made numerous contributions to both pathological anatomy, histology and immunology, all of which showed, not only his meticulous care in observation and description, but also his biological understanding. But his name will no doubt always be honoured for his discovery in 1901 of, and outstanding work on, the blood groups, for which he was given the Nobel Prize for Physiology or Medicine in 1930.


After World War I, Vienna and the new republic of Austria as a whole was in a desolate economic state, a situation in which Landsteiner did not see any possibilities to carry on with his research work. He decided to move to the Netherlands and accepted a post as prosector in the small Catholic St. Joannes de Deo hospital (now MCH Westeinde) in The Hague and, in order to improve his financial situation also took a job in a small factory, producing old tuberculin (tuberculinum prestinum). He also published a number of papers, five of them being published in Dutch by the Royal Academy of Sciences. Yet working conditions proved to be not much better than in post-war Vienna. So Landsteiner accepted the invitation that reached him from New York, initiated by Simon Flexner, who was familiar with Landsteiner's work, to work for the Rockefeller Institute. He arrived there with his family in the spring of 1923.Throughout the 1920s Landsteiner worked on the problems of immunity and allergy. In 1927 he discovered new blood groups: M, N and P, refining the work he had begun 20 years before. Shortly thereafter, Landsteiner and his collaborator, Philip Levine, published the work and, later that same year, the types began to be used in paternity suits.



In 1930, Landsteiner was awarded the Nobel Prize for his description of the human ABO blood group system, which he himself considered an accidental discovery. 

 His father, Leopold Landsteiner, a doctor of law, was a well-known journalist and newspaper publisher, who died when Karl was six years old. Karl was brought up by his mother, Fanny Hess, to whom he was so devoted that a death mask of her hung on his wall until he died. After leaving school, Landsteiner studied medicine at the University of Vienna, graduating in 1891. Even while he was a student he had begun to do biochemical research and in 1891 he published a paper on the influence of diet on the composition of blood ash. To gain further knowledge of chemistry he spent the next five years in the laboratories of Hantzsch at Zurich, Emil Fischer at Wurzburg, and E. Bamberger at Munich.

Returning to Vienna, Landsteiner resumed his medical studies at the Vienna General Hospital. In 1896 he became an assistant under Max von Gruber in the Hygiene Institute at Vienna. Even at this time he was interested in the mechanisms of immunity and in the nature of antibodies. 

From 1898 till 1908 he held the post of assistant in the University Department of Pathological Anatomy in Vienna, the Head of which was Professor A. Weichselbaum, who had discovered the bacterial cause of meningitis, and with Fraenckel had discovered the pneumococcus. Here Landsteiner worked on morbid physiology rather than on morbid anatomy. In this he was encouraged by Weichselbaum, in spite of the criticism of others in this Institute. In 1908 Weichselbaum secured his appointment as Prosector in the Wilhelminaspital in Vienna, where he remained until 1919. In 1911 he became Professor of Pathological Anatomy in the University of Vienna, but without the corresponding salary.

Up to the year 1919, after twenty years of work on pathological anatomy, Landsteiner with a number of collaborators had published many papers on his findings in morbid anatomy and on immunology. He discovered new facts about the immunology of syphilis, added to the knowledge of the Wassermann reaction, and discovered the immunological factors which he named haptens (it then became clear that the active substances in the extracts of normal organs used in this reaction were, in fact, haptens). He made fundamental contributions to our knowledge of paroxysmal haemoglobinuria.

He also showed that the cause of poliomyelitis could be transmitted to monkeys by injecting into them material prepared by grinding up the spinal cords of children who had died from this disease, and, lacking in Vienna monkeys for further experiments, he went to the Pasteur Institute in Paris, where monkeys were available. His work there, together with that independently done by Flexner and Lewis, laid the foundations of our knowledge of the cause and immunology of poliomyelitis.


In 1875 Landois had reported that, when man is given transfusions of the blood of other animals, these foreign blood corpuscles are clumped and broken up in the blood vessels of man with the liberation of haemoglobin. In 1901-1903 Landsteiner pointed out that a similar reaction may occur when the blood of one human individual is transfused, not with the blood of another animal, but with that of another human being, and that this might be the cause of shock, jaundice, and haemoglobinuria that had followed some earlier attempts at blood transfusions.

His suggestions, however, received little attention until, in 1909, he classified the bloods of human beings into the now well-known A, B, AB, and O groups and showed that transfusions between individuals of groups A or B do not result in the destruction of new blood cells and that this catastrophe occurs only when a person is transfused with the blood of a person belonging to a different group. Earlier, in 1901-1903, Landsteiner had suggested that, because the characteristics which determine the blood groups are inherited, the blood groups may be used to decide instances of doubtful paternity. Much of the subsequent work that Landsteiner and his pupils did on blood groups and the immunological uses they made of them was done, not in Vienna, but in New York. For in 1919 conditions in Vienna were such that laboratory work was very difficult and, seeing no future for Austria, Landsteiner obtained the appointment of Prosector to a small Roman Catholic Hospital at The Hague. Here he published, from 1919-1922, twelve papers on new haptens that he had discovered, on conjugates with proteins which were capable of inducing anaphylaxis and on related problems, and also on the serological specificity of the haemoglobins of different species of animals. His work in Holland came to an end when he was offered a post in the Rockefeller Institute for Medical 

Research in New York and he moved there together with his family. It was here that he did, in collaboration with Levine and Wiener, the further work on the blood groups which greatly extended the number of these groups, and here in collaboration with Wiener studied bleeding in the new-born, leading to the discovery of the Rh-factor in blood, which relates the human blood to the blood of the rhesus monkey.

To the end of his life, Landsteiner continued to investigate blood groups and the chemistry of antigens, antibodies and other immunological factors that occur in the blood. It was one of his great merits that he introduced chemistry into the service of serology.

Rigorously exacting in the demands he made upon himself, Landsteiner possessed untiring energy. Throughout his life he was always making observations in many fields other than those in which his main work was done (he was, for instance, responsible for having introduced dark-field illumination in the study of spirochaetes). By nature somewhat pessimistic, he preferred to live away from people.

Landsteiner married Helen Wlasto in 1916. Dr. E. Landsteiner is a son by this marriage.

In 1939 he became Emeritus Professor at the Rockefeller Institute, but continued to work as energetically as before, keeping eagerly in touch with the progress of science. It is characteristic of him that he died pipette in hand. On June 24, 1943, he had a heart attack in his laboratory and died two days later in the hospital of the Institute in which he had done such distinguished work.

From Nobel Lectures, Physiology or Medicine 1922-1941, Elsevier Publishing Company, Amsterdam, 1965This autobiography/biography was written at the time of the award and first published in the book series Les Prix Nobel. It was later edited and republished in Nobel Lectures. 

Sumi Khan,  Surjobarta 14 June 2022


Saturday, October 3, 2020

‘TEA DYED’ MASKS in Sri Lanka AATCC 100 bio-degradable

 Sri Lankan authorities has embarked on an innovative initiative to promote the Ceylon Tea brand during the global Covid-19 pandemic by distributing ‘tea dyed’ face masks to the international business community.



The masks are natural antimicrobial (AATCC 100), bio-degradable, eco-friendly, and non-toxic.

The Ceylon Tea branded face masks are distributed on a complimentary basis in collaboration with the Ministry of Foreign Relations.

According to the Sri Lanka Tea Board (SLTB), the face masks which have undergone a value addition process with the usage of the Ceylon Tea dye, a by-product of iced tea manufacturing, is reusable upto 30 washes, reports the Daily Mirror newspaper.

The SLTB said arrangements have been made to dispatch the branded face masks to over 75 Sri Lankan missions around the world who would distribute the product to the end users.

sumikhanbdj@gmail.com

Monday, March 23, 2020

An eye OPENING-if you don't believe about COVID- "ill-prepared US Gov for this pandemic"

This story is very touching and this is definitely an eye OPENING for those you don't believe about COVID-19

Natasha Ott

A healthy 39-year-old social worker died days after initially turning down a coronavirus test because she was told she was “low-risk,” her boyfriend said in a heartbreaking Facebook post. Josh Anderson says he found girlfriend Natasha Ott dead in her apartment in New Orleans on Friday as she still awaited news on whether her sickness and fever were actually COVID-19.

He warned that the “government is ill-prepared for this pandemic in a way that has and will cost lives,” while urging people to “cherish your loved ones like you could lose them.”

“The time for joking about Covid-19 is over,” he wrote. 


He said Ott — who helped people who are HIV-positive — had first told him on March 10 that she had a “respiratory cold” and “tiny fever.”
“They sent her home, but didn’t test her — she was told she was low-risk,” he wrote, calling his partner “a profoundly kind, passionate, funny and loving 39-year-old woman in good health.”

Her own clinic only had five test kits available, he said, adding she told him, “I declined to take one so someone else could.”

After her condition deteriorated, she finally got tested on March 16 — almost a week after first falling sick — but was told the results would take at least five days, with a further delay meaning they are still not ready, he said.

Anderson detailed Ott’s worsening mood and health, as well as her attempts to reassure him that she would be fine if she just drank whiskey.

He finally “found her dead in her kitchen” at 8 p.m. Friday while checking up because she had failed to respond to texts or calls.

“For those of you not fortunate enough to have known her — know this: it’s an immeasurable loss,” he wrote.

“And seeing a woman I knew to be so full of life lying on the floor lifeless was devastating. I was afraid to touch her. I held her anyway,” he said. NY Post

If you are healthy, you only need to wear a mask -WHO

  • If you are healthy, you only need to wear a mask if you are taking care of a person with suspected 2019-nCoV infection.
  • Wear a mask if you are coughing or sneezing.
  • Masks are effective only when used in combination with frequent hand-cleaning with alcohol-based hand rub or soap and water.
  • If you wear a mask, then you must know how to use it and dispose of it properly.
  • Before putting on a mask, clean hands with alcohol-based hand rub or soap and water.
  • Cover mouth and nose with mask and make sure there are no gaps between your face and the mask.
  • Avoid touching the mask while using it; if you do, clean your hands with alcohol-based hand rub or soap and water.
  • Replace the mask with a new one as soon as it is damp and do not re-use single-use masks.
  • To remove the mask: remove it from behind (do not touch the front of mask); discard immediately in a closed bin; clean hands with alcohol-based hand rub or soap and water.

Correct way to wear and dispose of masks

Monday, September 25, 2017

Japanese Water Therapy-Kick Start your Metabolism






This JAPANESE WATER THERAPY IS THE KEY TO LOSING WEIGHT AND STAYING HEALTHY
This Japanese Water Therapy is the Key to Losing Weight and Staying Healthy!
Highlights
  • Water is an essential part of our lives
  • It is often advised that one must drink at least eight to ten glasses
  • Japanese Water Therapy helps kick-start your metabolism
Water is an essential part of our lives and it is one of the basic elements required for human survival. It is often advised that one must drink at least eight to ten glasses of water every day to flush out all the toxins and to help it to function properly. Some nutritionists also advise that is great to start you day with a glass of warm water, lime and honey. It kick-starts your metabolism and does wonders for your overall health. In fact, people in Japan take this advice quite seriously and practice a certain kind of water therapy that is known to help with weight loss and fitness. A simple practice when done methodically and consistently may help in fighting various health problems. The objective of this therapy is to use water in your daily life to balance and regulate your health.at i
What is the Japan Water Therapy?
Most of the ailments begin with a weak stomach. The Japanese Water Therapy helps in cleaning your stomach and boosting your digestive system. Japanese traditional medicine recommends drinking water right after waking up early morning. These early morning hours are considered to be 'golden hours'. Drinking water during this period not only promotes weight loss by smoothing your digestive system, but can also help in treating various health problems.
The Japanese Water Therapy helps in cleaning your stomach and boosting your digestive system​
What Does the Japan Water Therapy Suggest?
Here are five things that the Japanese Water Therapy suggests you must do:
  1. As soon as you wake up in the morning, drink four to six glasses of water, each of 160-200 milliliters, on an empty stomach. Water should ideally be consumed at room temperature or lukewarm. You can also squeeze some fresh lemon juice in it.
  2. Brush your teeth after drinking water. Avoid eating or drinking anything for at least 45 minutes, after which you can continue with your daily routine.
  3. After every meal of the day, do not eat or drink anything for at least two hours.
  4. Elderly people, those who are suffering from any serious health condition or even those who have just started out should begin the therapy with one glass of water every day and gradually increase the number of glasses.
  5. If you are unable to chug all four glasses of water in one go, wait for a couple of minutes between each glass of water so as to give your stomach a break.
  6. The Japanese water theory claims to cure diseases and give you a fit and healthy life. The therapy recommends that you make the above tips a part of your daily routine.

As soon as you wake up in the morning, drink four to six glasses of water​
The Japanese theory also states these important points:
  • Walk quietly every day for at least an hour. This will help in fastening your metabolism.
  • Every night, before going to the bed, gargle at least 4-5 times with warm water mixed with salt.
  • Avoid eating and drinking while you stand as it hinders the digestion process.
  • Chew your food properly before gulping it down as it helps in better digestion of food.
Benefits of the Japanese Water Therapy
Japanese water therapy helps relieve stress, promotes weight loss and ensures a strong digestive system. Most of all, it keeps you energetic throughout the day and a healthy body leads to a healthy mind. Ayurveda experts also suggest that you must drink water first thing in the morning as it plays a key role in boosting your health.
NDTV