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Terramycin Antibiotics: Miracle from Mold 1952 Pfizer
🕑 Added 2020-05-13 18:37:18 +0000 UTCmore at http://quickfound.net/
'Gives the scientific story behind terramycin, one of the wonder drugs.'
Originally a public domain film from the Library of Congress Prelinger Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied.
The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original).
https://en.wikipedia.org/wiki/Oxytetracycline
Wikipedia license: http://creativecommons.org/licenses/by-sa/3.0/
Oxytetracycline was the second of the broad-spectrum tetracycline group of antibiotics to be discovered.
Oxytetracycline works by interfering with the ability of bacteria to produce essential proteins. Without these proteins, the bacteria cannot grow, multiply and increase in numbers. Oxytetracycline therefore stops the spread of the infection and the remaining bacteria are killed by the immune system or eventually die.
Oxytetracycline is a broad-spectrum antibiotic, active against a wide variety of bacteria. However, some strains of bacteria have developed resistance to this antibiotic, which has reduced its effectiveness for treating some types of infections.
Oxytetracycline is still used to treat infections caused by Chlamydia (e.g., the chest infection psittacosis, the eye infection trachoma, and the genital infection urethritis) and infections caused by Mycoplasma organisms (e.g., pneumonia).
Oxytetracycline is also used to treat acne, due to its activity against the bacteria on the skin that influence the development of acne (Cutibacterium acnes). It is used to treat flare-ups of chronic bronchitis, due to its activity against the bacteria usually responsible, Haemophilus influenzae. Oxytetracycline may also be used to treat other rarer infections, such as those caused by a group of micro-organisms called rickettsiae (e.g., Rocky Mountain spotted fever). To make sure the bacteria causing an infection are susceptible to it, a tissue sample is usually taken, for example a swab from the infected area, or a urine or blood sample.
Oxytetracycline was patented in 1949 and came into commercial use in 1950...
History
It was first found near Pfizer laboratories in a soil sample yielding the soil actinomycete, Streptomyces rimosus by Finlay et al. In 1950, a celebrated American chemist, Robert B Woodward, worked out the chemical structure of oxytetracycline, enabling Pfizer to mass-produce the drug under the trade name, Terramycin. This discovery by Woodward was a major advancement in tetracycline research and paved the way for the discovery of an oxytetracycline derivative, doxycycline, which is one of the most popularly used antibiotics today...
