Biomedical subjects
Publications and source records attributed to S Pons.
3 cases of cocidiomycosis observed in the province of Mendoza (Argentina) are described by the authors. The study of the endemic cocidiomycosis in Argentina and the ecological aspects of this disease in Mendoza are studied by the authors.
Bibliographic review of all the published cases of granuloma gluteale infantum and study of the second observation in Argentina. In this case there was a previous Leiner's erythrodermia treated with fluorinatec corticoid creams. The typical lesions appeared suddenly. The authors made a histopathologic study and a review of the pathogenetic theories on this dermatose. In the observation of authors the lesion disappeared in spite of persistence with the treatment with fluorinated corticoid creams, one of the causes of this dermatose according to some authors.
The molecular weights and the integrity of the two major components of ribosomal RNA from a wide variety of eukaryotic species, from protozoa to man, has been investigated by polyacrylamide gel electrophoresis under fully denaturing conditions. The results show that the s-rRNA is largely heterogeneous, ranging in size, from 0.65 X 10(6) to 0.96 X 10(6) dalton. The l-rRNA ranges in size from a minimum mol wt of 1.28 X 10(6) to a maximum weight of 1.60--1.66 X 10(6) (of warm-blooded vertebrates, Cephalopoda and Diptera); several intermediate values have been found in lower organisms and Protozoa. The s-rRNA is a truly continous, uninterrupted polynucleotide chain in all groups of organisms (protozoans, plants, fungi and animals). The larger rRNA is a continous un-nicked chain in all of the deuterostomian animals, plants and fungi. However, the l-rRNA of all the protostomian animals and the protozoa is an aggregate molecule consisting of two subunits held together by limited regions of hydrogen bounding; in these organisms the size of the s-rRNA is generally identical to that of the larger fragment of the l-rRNA. Analysis of the molecular weights of the subunits of the l-rRNA in the protostomians and the protozoa suggests that the l-rRNA contains one short stretch, prone to nucleolytic attack, dividing the RNA chain into a molecularly conserved portion (0.65 to 0.72 X 10(6) dalton) and a variable portion (0.65 to 0.96 X 10(6) dalton).
Clinical study and bibliographic review of the lymphomatoid papulosis (Macaulay-1968) and parapsoriasis varioliformis acute (Mucha-1916). A personal case is reported after a review of nosological location of these diseases and the variable prognosis. The authors reach the following conclusions: 1st) From the clinical point of view the small number of lesions in the lymphomatoid papulosis bring about a different clinical picture from that of parapsoriasis varioliformis acuta in here usually there is a considerable number of lesions. 2nd) There are concomitant lesions of parapsoriasis gutata in parapsoriasis varioliformis and none of the type in lymphomatoid papulosis. 3rd) Protracted course in lymphomatoid papulosis and short lived eruption in the parapsoriasis varioliformis acuta. 4th) From the histological point of view denser and atypical infiltrate in cases of parapsoriasis varioliformis.
A new case of hereditary acrokeratotic poikiloderma of Weary is presented by the authors. There was no eczematoid dermatitis and the patient was the only member of the family affected. There were similarities with the cases published by Piñol Aguadé and co-workers. The authors suggest that this disease can appear in two forms; a complete form (Weary type) and an incomplete form (Piñol type). The histology of the keratotic lesions is reported for the first time. The lesions are very similar in the 15 cases published up to 1975, and the authors believe that it constitutes a well defined entity.
A case of true mielinic neuroma is described. An exhaustive review of the literature on this subject, basically of the Bolande article is carried out by the authors. The mielinic neuromata are a partial aspect of the complexe neuro-crestopathic syndromes associating the cutaneous lesions to: 1) Medullary tyroid carcinoma, 2) pheocromocytoma and 3) neurofibromatous lesions. The observation related by the authors shows: 1) Ehlers-Danlos disease (not described previously), 2) skeletal abnormalities, 3) medullary tyroid carcinoma and 4) pheochromocytoma symptoms.
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