antibiotics Flashcards
how had penicillin been discovered?
- in 19th century by Lister
- used to treat a wound never published notes
during WW1 what happened to Alexander Fleming?
- sent by St Mary’s hospital (London ) to study treatment of wounded soldiers
- observed antiseptics unable to prevent infection
- look for something to kill the microbes that caused infection
what caused septicaemia?
- staphylococci (very dangerous germ)
when did fleming return from holiday?
1928
what did fleming notice?
noticed mild on one of his petri dishes, penicillin - staphylococci germ killed by mould
what did fleming conclude from his findings?
natural antiseptic -> today called antibiotic
what happened in 1929?
fleming published results, had no funds to develop it
what did fleming miss?
injecting penicillin into the blood, would have shown it was a medicine and sparked further interest
what happened in 1937?
- howard florey and ernst chain, after reading article by fleming researched penicillin
- had funds to develop + experimented on mice
what happened in 1941?
florey and chain started experimenting on humans
what was floreys and chains first experiment on a human/ first test on human overall?
- policeman with an infection from scratch
- ran out of drug, died after 5 days but seen success
how did WW2 impact penicillin?
- sped up production, US government paid drug companies to make large quantities
- 1943 used in allied troops in North Africa
what did USA and GB do with penicillin?
produced huge quantities, saved thousands of lives in 1944 + 45
how much penicillin was there in 1943?
enough to treat 1000 soldiers
how much penicillin was there in 1945?
- 250,000 soldiers helped
- 15% soldiers would have died without the drug