Modern Medicine Flashcards
when was dna discovered?
1953
who discovered dna?
crick and watson
how does understanding dna impact on medicine?
doctors can identify illnesses before they develop and in the womb
how it dna currently limited?
it is not yet know how to reverse medical conditions
how has blood sugar monitoring impacted medicine?
from the 1960’s people who had diabetes could check their blood sugar themselves to ensure they were managing their condition
how have CT scans impacted medicine?
from the 1970’s CT scans were developed which are more powerful forms of xray meaning they can diagnose tumours
how have MRI scans impacted medicine?
they use magnets and radio waves to create an internal image of the body
better suited to diagnosing soft tissue damage
how have endoscopes impacted medicine?
a camera on the end of a think flexible tube used to see inside the body without the need for surgery
what did fleming find in 1928?
when he went on holiday, he left a pile of unwashed petri dishes and when he returned mould was growing on them. Around the mould, the bacteria had disappeared
what did fleming discover when he diluted the mould?
it killed bacteria without harming the cells
what did fleming write about in 1929?
penicillin in his medical journal
why was the discovery of penicillin initially limited?
fleming had not used it on animals so there was no evidence of it being useful so no one thought the discovery was important
it took ages to grow
what did florey and chain discover?
penicillin helped mice recover from infections but they would need 3000x as much to recover one person
what did florey and chain start growing penicillin in?
hospital bed pans
how much did florey and chain get from the government in 1938?
only £25
why were the government reluctant to fund penicillin?
there was no proof it worked on humans and the country was on the verge of war
who gave florey and chain 5 years worth of money for research?
the US government
how did florey and chain prove that penicillin worked on humans?
in 1941, they tested it on a policeman who was dying of sepsis from one tiny cut - he began to recover but they ran out so he died - this showed that penicillin wasn’t harmful to the patient
why couldn’t penicillin be mass produced?
factories were busy making warfare
by d-day how many doses of penicillin were there to treat the wounded?
over 2.3 million
what did the US government make for US companies to buy the expensive equipment needed to make penicillin?
interest free loans
how many pharmaceutical companies did the US government fund to mass produce penicillin?
21
when was the first magic bullet developed?
1909
who developed the first magic bullet?
Paul Ehrlich
what was the first magic bullet called?
salvarsan 606
what did the first magic bullet treat?
syphilis