Páginas: 2 (351 palabras) Publicado: 23 de agosto de 2012
The antibiotic

The antibiotics
That are the antibiotics?
The antibiotics are a compound or substance that kills or slows down the growth of bacteria. They help to your bodyto increase you defenses and avoiding that the disease became worst.
History of the antibiotics
Before the early 20th century, treatments for infections were based primarily on medicinal folklore.Mixtures with antimicrobial properties that were used in treatments of infections were described over 2000 years ago. Many ancient cultures, including the ancient Egyptians and ancient Greeks, usedspecially selected mold and plant materials and extracts to treat infections. More recent observations made in the laboratory of antibiosis between micro-organisms led to the discovery of naturalantibacterial produced by microorganisms.
The term antibiosis, meaning "against life," was introduced by the French bacteriologist Vuillemin as a descriptive name of the phenomenon exhibited by theseearly antibacterial drugs. Antibiosis was first described in 1877 in bacteria when Louis Pasteur and Robert Koch observed that an airborne bacillus could inhibit the growth of Bacillus anthracis. Thesedrugs were later renamed antibiotics by Selman Waksman, an American microbiologist, in 1942.
Antagonistic activities by fungi against bacteria were first described in England by John Tyndall in 1875.Synthetic antibiotic chemotherapy as a science and development of antibacterials began in Germany with Paul Ehrlich in the late 1880s. Ehrlich noted that certain dyes would color human, animal, orbacterial cells, while others did not. He then proposed the idea that it might be possible to create chemicals that would act as a selective drug that would bind to and kill bacteria without harming thehuman host. After screening hundreds of dyes against various organisms, he discovered a medicinally useful drug, the synthetic antibacterial Salvarsan now called Arsphenamine.
From this point was...
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