Donnerstag, 22. Februar 2018

''Unusual" Clinical Trials

Barry Marshall

After failed attempts to infect piglets in 1984, Marshall, after having a baseline endoscopy done, drank a Petri dish containing cultured H. pylori, expecting to develop, perhaps years later, an ulcer. He was surprised when, only three days later, he developed vague nausea and halitosis (due to the achlorhydria, there was no acid to kill bacteria in the stomach, and their waste products manifested as bad breath), noticed only by his mother. On days 5–8, he developed achlorydric (no acid) vomiting. On day eight, he had a repeat endoscopy, which showed massive inflammation (gastritis), and a biopsy from which H. pylori was cultured, showing it had colonised his stomach. On the fourteenth day after ingestion, a third endoscopy was done, and Marshall began to take antibiotics...

In 2005, the Karolinska Institute in Stockholm awarded the Nobel Prize in Physiology or Medicine to Marshall and Robin Warren, his long-time collaborator, "for their discovery of the bacterium Helicobacter pylori and its role in gastritis and peptic ulcer disease"

Stewart Adams 

Ibuprofen was first made in December 1961.

Four substances that went to clinical trial failed, and the last - ibuprofen - worked; He took the first dose himself and used the drug to treat his own headaches before it was on the market. Animal tests were very encouraging, and tests on humans showed it was about three times stronger than aspirin.
A patent was filed in 1962, and granted in 1962, for phenylalkane derivatives. In 1969 ibuprofen was licensed as a prescription drug in the UK, and in 1974 in the USA.

Waldemar Haffkine

Anti-cholera vaccine:Haffkine focused his research on developing cholera vaccine and produced an attenuated form of the bacterium. Risking his own life, on July 18, 1892, Haffkine performed the first human test on himself and reported his findings on July 30 to the Biological Society.

Anti-plague vaccine:  In October 1896, an epidemic of bubonic plague struck Mumbai and the government asked Haffkine to help. He embarked upon the development of a vaccine in a makeshift laboratory in a corridor of Grant Medical College. In three months of persistent work (one of his assistants experienced a nervous breakdown, two others quit), a form for human trials was ready and on January 10, 1897 Haffkine tested it on himself. "Haffkine's vaccine used a small amount of the bacteria to produce an immune reaction."

Keine Kommentare:

Kommentar veröffentlichen