Producing, Controlling and Stabilizing Pasteur's Anthrax Vaccine
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Pasteur Part II-022514
What is Life? The Passionate Dedication of Louis Pasteur Part II by Denise Bouchard Ham and Roger Ham The Extraordinary Years of Discovery Louis Pasteur ~1880 Despite a near-fatal stroke in 1868 at the age of 45, which left his left side paralyzed, Pasteur’s greatest achievements lay before him. The power of his insights into the nature of germs and disease exploded. His laboratory was buzzing with activity, and the breakthroughs were only limited by the time and energy required to find a solution to each new disease tackled. Between 1877 and 1888, Pasteur discovered the existence of six different species of pathogenic microbes in humans and animals: septic Vibrio (septicemia), Staphylococcus , Streptococcus , bacillus of chicken cholera, swine fever, and Pneumococcus . “We must find out how to immunize against the diseases for which we have isolated the virus. Just as one can protect man from smallpox, why shouldn't we protect him from other epidemic diseases?” — L. Pasteur 1 THE IDEA OF VACCINATION The idea of using a small dose of something harmful to develop a resistance to it was known for centuries. The advent of the microscope and germ theory opened the door to new potentials in meeting the challenge: how to deliberately expose a person to a dangerous disease without killing them. Mithridates VI, the King of Pontus (the Black Sea area and present-day Turkey), lived from 134-63 B.C. and was known to drink various potions containing small doses of poisons to develop a tolerance. The word Mithridatism refers to this partial immunity. -
Past, Present and Future of Bacteria and Virus Fighters at the Prince Leopold Institute of Tropical Medicine, Antwerp
B. PAST, PRESENT AND FUTURE OF BACTERIA AND VIRUS FIGHTERS Milestones of 150 years bacteria and virus fighting 1851 – 1900 1851 - Charles Chamberland (France) developed filters for bacteria, which lead to the discovery of viruses. 1853 - Pierre Roux (France) discovered that diphtheria was caused by the toxin, rather than by the bacterium itself. 1855 - Bunsen burner, invented by Michael Faraday. 1856 - Louis Pasteur (France) discovered that fermentation is the result of the activity of micro- organisms. 1859 - British biologist Charles Darwin published his book “On the origin of species by means of natural selection”. It will change the face of biology and society forever. 1866 - Mendel published his work on heredity. 1871 - Charles Darwin published his book “The descent of man and selection in relation to sex”, in which he looked for the evolution of humans and sexual evolution. 1873 - Hansen discovered Mycobacterium leprae. 1876 - The term “enzyme” is used for the first time after trypsine is discovered in pancreatic juice. Louis Pasteur discovered anaerobic organisms. 1879 - Louis Pasteur discovered accidentally that weakened cholera bacteria do not cause cholera in chickens. Start of attenuate life vaccines. 1880 - Louis Pasteur developed his germ theory of diseases. Robert Koch (Germany) started using solid cultures – gelatine-to-grow bacteria. 1882 - Robert Koch discovered the bacterium that caused tuberculosis (TB). 1885 - Louis Pasteur developed a vaccine against rabies. 1889 - Ducreyi discovered the bacterium Haemophilus ducreyi, which causes chancre. 1892 - Viruses were hypothesized as the cause of the tobacco mosaic disease in plants. 1898 - Tobacco mosaic virus identified by Martinus Beyerinck (The Netherlands) “Contagium vivum fluidum”. -
The First Live Attenuated Vaccines
MILESTONES MILESTONE 3 The first live attenuated vaccines Awareness of Edward Jenner’s pioneering COVID-19 treatment trials, 24 sheep, 1 Despite failing to culture the rabies-caus- studies of smallpox vaccination (MILESTONE 2) goat and 6 cows were inoculated twice with ing organism outside animal hosts or to view led Louis Pasteur (1822–1895) to propose Pasteur’s anthrax vaccine, on 5 and 17 May it under a microscope (because, unknown to that vaccines could be found for all virulent 1881. A control group of 24 sheep, 1 goat and Pasteur, rabies is caused by a virus rather than diseases. 4 cows remained unvaccinated. On 31 May a bacterium), Pasteur discovered that the Pasteur began to study chicken cholera all the animals were inoculated with freshly virulence of his rabies stocks, maintained by in 1877 and by the following year had suc- isolated anthrax bacilli, and the results were serial intracranial passage in dogs, decreased ceeded in culturing the causative organism, examined on 2 June. All vaccinated animals when the infected material was injected Pasteurella multocida. In 1879, Pasteur into different species. Starting with a highly discovered by chance that cultures of this virulent rabies strain serially passaged many bacterium gradually lost their virulence times in rabbits, Pasteur air-dried sections over time. Before leaving to go on a holiday, of infected rabbit spinal cord to weaken the Pasteur had instructed an assistant to inject virus through oxygen exposure, as explained the latest batch of chickens with fresh cultures in Pasteur’s 26 October 1885 report to the of P. -
The Pasteur Institute (1887- ) [1]
Published on The Embryo Project Encyclopedia (https://embryo.asu.edu) The Pasteur Institute (1887- ) [1] By: Racine, Valerie Keywords: Pasteur Institute [2] phage group [3] L'Institut Pasteur (The Pasteur Institute) is a non-profit private research institution founded by Louis Pasteur on 4 June 1887 in Paris, France. The Institute's research focuses on the study of infectious diseases, micro-organisms, viruses, and vaccines. As of 2014, ten scientists have received Nobel Prizes in physiology or medicine for the research they have done at the Pasteur Institute. Contrary to the way genetics was studied in US research universities during the mid-twentieth century, the genetic research conducted at the Pasteur Institute at the same time did not rest on a conceptual separation between embryology [4] and evolution [5]. According to historian Michel Morange from the École Normale Supérieure in Paris, France, this difference enabled Pasteurian scientists to develop the concepts of regulatory genes [6] and of developmental genes [6]. Louis Pasteur served as the Institute's first director until his death on 28 September 1895. Pasteur researched bacteria, contributed to the germ theory of disease, and developed methods of sterilization [7] aimed at reducing pathogens in food, a process eventually called pasteurization. Pasteur also developed a vaccine to control and treat rabies, and he administered it to humans [8] for the first time in 1885 at the École Normale Supérieure (hereafter called École Normale). During the following years, the Académie des Sciences in Paris, France, as well as other public contributors, funded Pasteur to establish an institute to provide rabies vaccinations, to study infectious diseases, and to disseminate this information throughout France and the rest of the world.