No other drug has had a greater impact on the world than the discovery of penicillin in 1928. Penicillin and other antibiotics that followed made curable bacterial infections that killed people 70 years ago. While Alexander Fleming is credited with penicillin's discovery, many people contributed to the work of making penicillin the wonder drug it has come to be knows as.
In 1928 Fleming was doing research on staphylococci. During his research one of his cultures was contaminated with airborne mold particles. Fleming left on vacation for a month and upon his return noticed the contaminated culture. He noticed a clear area around the mold that prevented the bacteria from growing. He realized that the mold must have been producing a substance that inhibits the growth of the bacteria. Fleming isolated the substance and named in penicillin. Fleming was unable to produce concentrated amounts on penicillin and was unsure of its therapeutic value. Fleming published a paper on his discovery but it did not receive much notice until 1939.
In 1939 a team of scientists from Oxford University, lead by Howard Florey, was doing research on substances that that could kill bacteria. Florey began testing penicillin. Fifty white laboratory mice were injected with Streptococcus. Half the mice were also injected with penicillin. The mice injected with penicillin survived while those that were not died. Successful testing was soon done on humans.
The first human tested by Florey's lab was a police officer that had nicked himself shaving. It was a minor cut, but was ignored and became infected. When doctors were unsuccessful in treating the officer, Florey was given permission to treat the officer using penicillin. After five days the officer was improving but because of limited supplies of penicillin the officer relapsed and soon died. Although the officer died, the penicillin had temporarily stopped the infection and was not harmful .
Penicillin Penicillin is the first naturally occurring antibiotic discovered and the first to be used therapeutically. ... Penicillin was discovered in 1928 by a Scottish Physician, Alexander Fleming. ... Penicillin did have more of an impact on the economy. ... Penicillin works by inhibiting the bacteria cell from forming a cell wall. ... In this sequence, Escherichia coli were incubated in penicillin for 30 minutes. ...
Penicillin is a mold, but not just one. ... This grew well in a tank, and doubled the amount of penicillin produced. ... That proves that the antibiotic penicillin is very powerful. ... Penicillin can be used to help many bacterial diseases. ... With the discovery of Penicillin, many lives have been saved. ...
My topic for the top one hundred news stories of the century is Penicillin. ... Penicillin itself can be used to treat many and a wide variety of diseases. ... So as you can see Penicillin can be used on many different diseases. Sir Alexander Fleming discovered Penicillin. ... The substance discharged by the mold he called Penicillin. ...
Amazingly yesterday a "Miracle antibacterial drug" called PENICILLIN was discovered, at St. ... Alexander Fleming was looking at one of his specimens of Staphylococcus aureus (a bacteria) and he noticed there was a mold growing that is called PENICILLIN. ... How does PENICILLIN kill bacteria? PENICILLIN works by destroying the cell wall of the bacteria. ... Chemical formula C16H18N2O5S In the picture above you are looking at a mold of penicillin growing on a bacteria. ...
There are many advantages and disadvantages to the invention of penicillin and other antibiotic medicines. There are numerous rewards to the discovery of penicillin. In 1421, penicillin was used for the first time to save someone's life. ... On average, 150 million perceptions are written a year for penicillin. With the use of penicillin as a meditation, it added 10 years to everyone's life expectancy. ...
He baptizes this substance 'penicillin'.... To this day, penicillin is still being utilized. ... Summary Penicillin is the first of antibiotics and was unintentionally discovered. ... Eventually, the pharmaceutical Penicillin was introduced. ... However, without Penicillin, stronger antibiotics would not be invented. ...
ANTIBIOTICS -Antibiotics can be bacteristatic (paralyze the bacteria) or bactericidal( kill the bacteria) Major Classes of Antibiotics 1) Penicillins 2) Cephalosporing 3) Fluoroquinolones 4) Tetracyclines 5) Macrolides Penicillins - Oldest class of antibiotics - Bactercidal - Effective against bacteria that are sensitive/ susceptible to penicillins - There are 4 groups of penicillins A) Natural: eg. penicillin G&V, narrow spectrum B) Penicillinase Resistant: eg. nafcillin, it is an enzyme produced by certain bacteria that inactivates penicillin, this makes the bacteria resistan...
Certain main problem areas such as Waste Water Treatment Plants, factory farming, overusing general antibiotics (like penicillin), hospital hygiene or just hygiene in general, the difference between poor and rich medical care, use of antibiotics on crops, and the limited ways to kill bacteria enables bacteria to evolve which poses huge problems for future generations. ... For instance, penicillin used to be fairly good at treating Staphylococcus, yet studies in 1999 showed that over 90% of all Staphylococcus strains were immune to penicillin" (Bettelheim). Penicillin used to be called the mira...
The use of animals in the search for new drugs is not always reliable. Physiological differences between species can produce various results. There have been major medical break throughs without the aid of animals. X-rays were developed without the use of animals, as well as the vaccine for yellow f...
