Definitions

ectothrix

David Gruby

David Gruby (August 20, 1810 - November 14, 1898) was an Hungarian physician who was born in the village of Kis-Kér (now Bačko Dobro Polje, Serbia). He received his doctorate in Vienna and practiced medicine in Paris.

Gruby is remembered as a pioneer in the fields of microbiology and mycology. Most of his important work was done during the 1840s. In 1841 he described the fungus that caused favus. This discovery was independent of Johann Lukas Schönlein's (1793-1864) findings. Today, this fungal parasite is called Achorion schoenleinii in Schönlein's honor. In 1842 he described a microscopic cryptogam (trichophyton ectothrix) which causes a dermatological disease known as sycosis barbae. Gruby also discovered Monilia albicans, the cause of candidiasis, and in 1843 he described a fungus Microsporum audouini that causes a type of ringworm. This fungus was named after naturalist Jean Victor Audouin (1797-1842), and the disease is sometimes referred to as "Gruby's disease".

Gruby also discovered a parasite in the blood of frogs he called Trypanosoma sanguinis. During the early years of anaesthesia, he performed important experiments with chloroform and ether on animals.

Written works

  • Mémoire sur une vegétation qui constitue la vraie teigne. (discovery & description of the achorion of favus)
  • Recherches anatomiques sun une plante cryptogame qui constitue le vrai muguet des enfants (Discussion of albidans in thrush)
  • Sur une espèce de mentagre contagieuse résultant du développement d'un nouveau cryptogame dans la racine des poils de la barbe de l'homme. (description of Trichophyton mentagrophytes, the cause of sycosis barbae)
  • Recherches sur la nature, le siège et le développement du Porrigo decalvans ou phytoalopécie (concerning the study of Microsporon audouini)
  • Recherches sur les cryptogames qui constituent la maladie contagieuse du cuir chevelu sous le nom de Teigne (Trichophyton tonsurans, in ringworm of the scalp).

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