88 years ago, bacteriologists in Scotland first discovered penicillin. At that time, it had the name "foreign gas" called "penicillin". It coincided with the beginning of World War II, and penicillin saved the lives of countless soldiers and people in this war. At that time, it was called "life-saving medicine", and the atomic bomb and radar were called "the three major inventions of World War II."
This discovery opened the curtain for the era of antibiotics. After that, scientists discovered a variety of antibiotics such as streptomycin, erythromycin, kanamycin and vancomycin. These antibiotics have caused many people who might have "hanged" by bacterial infections to escape in the past few decades, but with the abuse of antibiotics, the knife that had been thrown out has turned us ourselves!
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The pictorial of the Second World War "Thanks to Penicillin! He can go home alive!"
The emergence of "super bacteria" has made many researchers realize that the suppression of antibiotics is weakening. In order to avoid one day, people will recall the "fear of being dominated by super bacteria", and researchers in many related fields are working hard to study drugs that can suppress super bacteria. Just now, a new study has recently made people feel refreshed. A research team at the University of Melbourne has synthesized a star-shaped peptide polymer that can efficiently solve super bacteria!
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Star polymer peptide
Why is it that makes people feel refreshed? First, in the past 30 years, only two new types of antibiotics have emerged. Secondly, we used to “know nothing†about how long it takes for bacteria to develop resistance. But now, this question has an answer! In the September 9th issue of Science, scientists from Harvard's Roy Kishony team showed us the amazing speed of bacterial mutation!
In the laboratory, the researchers placed a 60cm*120cm "large petri dish" with 14L of agar, which is a bacterial food. The researchers called the dish "MEGA-plate." There are no antibiotics at both ends of the culture dish. The concentration of antibiotics is increased in a stepwise manner to the middle, which is the lowest concentration at which bacteria cannot grow. The lowest concentration is 10 times and 100 times, and the most center is 1000 times. Therefore, the center of the culture dish is The "ultimate destination" of bacteria is also supposed to be their "Sura hell"!
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Medium concentration setting
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