Showing posts with label syphilis. Show all posts
Showing posts with label syphilis. Show all posts

Friday, October 5, 2012

History of syphilis

Shortly after Columbus had arrived in the New World, syphilis erupted in Europe during the waning years of the sixteen century.

The disease made its first appearance in Naples in 1495, near beginning of a series of Italian Wars that engulfed Europe for about a half century.

Initially, the disease was called the ‘disease of Naples’ but it rages with such virulence among the French troops that France was force to give up the campaign.

The term ‘syphilis’ was first deployed by the Veronese humanist and physician Girolamo Fracastoro in a poem Syphilis sive morbus gallicus in 1530.

Two German investigators, Fritz Schaudinn and Erich Hoffman, announced the discovery of the germ of ‘syphilis’ in 1905.

Following the discovery August von Wasserman discovered a blood test for syphilis in 1906. In 1910, Paul Ehrlich identified an arsenical compound called Salvarsan, that was an effective though difficult to use treatment for syphilis.

In 1945, when the new medicine, penicillin, seemed to promise a total cure, syphilis treatment was the focus priority.

French virologist Philipe Ricord in 1837 establish the specificity of the two diseases through a series of experimental inoculations from syphilitic chancre. He also among the first physician to differentiate primary, secondary and tertiary syphilis, the three stages of infection.
History of syphilis

Thursday, May 13, 2010

The origin of syphilis

The origin of syphilis
The origin of syphilis ( a treponematosis pullidum) is one of the most controversial problems on the history of infectious diseases.

Syphilis was first recognized as a distinct pathological entity in Europe following epidemics that developed around 1500 that is, shortly after the return of Columbus from his voyage of discovery.

The question is whether syphilis was indigenous to America and was brought to Europe by the sailors of Columbus, or whether it already existed although undiagnosed in the Old World.

Paleopathology is of limited help in the solution of this problem in spite of the fact that syphilis leaves its characteristics marks on the bones.

The difficulty is that there are three other treponematoses, which are nonsexually transmitted: yaws, a tropical disease cause by Treponema pertenue: pinta, endemic in tropical America, caused by Treponema carateum and bejel, a disease of the arid regions of Eurasia, caused by subspecies of Treponema pallidum.

The treponemas, the causative agents of these diseases, are morphological identical and have a common antigenic structure which differs only quantitatively.

In man, partial cross immunity exists between the various treponematoses, which suggest that the four treponemas are four different strains of the same specifies.

It has been suggested that the four treponematoses have a common origin and that they have acquired their individual identity though millennia of evolution.

According to this theory, the oldest disease would be pinta which would have existed in the world for at least 20,000 years and the other three would be derived from it; climatic circumstances, urban living, diet, etc. would have caused an increased virulence of syphilis toward the end of the Middle Ages, and by coincidence the first epidemic would have develop shortly after the return of Columbus.

Other hypothesis include those suggesting that the four treponematoses have always existed in their present form and that they effect various human populations according to physical environment and socio cultural status.

With alterations of the environment and changes in living conditions there would be a concomitant shift in the particular treponematosis affecting a given population.

For example, living in the humid climate of the jungles of South America would favor the development yaws whereas in dry climates yaws would tend to disappear and endemic syphilis would take over.

When hygienic and environmental conditions tend to eliminate other forms of transmission, only the sexual one is left and venereal syphilis prevail Of this is the case, the European epidemics around 1500 would not have been epidemics of a new disease but the recognition of syphilis as a clinical entity distinct from leprosy, with which it had been confused.

In the other words, venereal syphilis would have existed from time immemorial both in the New and the Old World.
The origin of syphilis

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