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Biomedical subjects

G Fabrizi

Publications and source records attributed to G Fabrizi.

At least 55 records · Page 3Linked to original sources
PubMed1981

Membrane proteins in human skin tumors.

The microsomal, mitochondrial, and nuclear fractions of cutaneous tumors have been investigated. Cutaneous tumors were homogenized and microsomal, mitochondrial, and nuclear fractions were purified. The membrane proteins were solubilized with sodium duodecyl sulfate (SDS). The membrane lipids were removed and membrane proteins were solubilized again in a small volume of SDS solution and chromatographed in SDS-acrylamide slab-gel. The plates were stained with Coomassie Brilliant Blue to show protein bands. The preliminary results show that the electrophoretic profiles of microsomal proteins are characteristic of some tumors.

Carcinoma↗
PubMed1980

Urbach-Wiethe disease. Light and electron microscopic study.

A case of lipoid proteinosis was subjected to clinical, histologic and electron microscopic study. Palpebral biopsies showed a large dermal infiltration composed of closely interwoven granulo-filamentous material in the superficial and deep dermis. Collagen fibers were normal. Fibroblasts seemed to play an active role in the synthesis of this accumulating substance. Around the dermal capillaries there was a prominent concentric multilamination of the basal lamina which was considered a reaction of the endothelial cells to the irritation caused by compression of the accumulating substance.

Adult↗
PubMed1979

[Chromatography of membrane proteins in Triton-X 100. I) Solubilization of membrane proteins in Triton-X 100].

In their study of the chemical and physical characteristics of membrane protein, the Authors have directed their attention to Triton-X 100. The hypothesis is that this detergent would have two antagonistic effects: on the one hand it would delimit the membrane fostering the formation of unstable complexes, on the other it would establish unstable intermediate complexes fostering the formation of soluble proteic complexes.

Animals↗
PubMed1979

[Chromatography of membrane proteins in Triton-X 100. II) Affinity chromatography of membrane proteins on Con-A linked to Sepharose in Triton-X 100].

The Authors have made chromatographs using Con-A Sefaroso columns, varying the percent of Triton-X 100 and the proteic concentration. With proteic concentrations varying from 0.4 to 4mg/ml and in solutions containing 0.5 to 1% of Triton-X 100 with the pH value remaining constant at 8 - solubilization of membrane protein does occur.

Animals↗
PubMed1975

[Ultrastructural observations on amastigote forms of Leishmania donovani in a case of laryngeal leishmaniasis].

An ultrastructural study on the amastigote stage of Leishmania donovani, in a rare case of laringeal involvement, was carried out. Many details of the fine morphology of this protozoon were observed under the electron microscope, i.e.: the outer membrane of host origin, periplast, subpellicular microtubules, kinetoplast, flagellum, flagellar pocket, multivesicular bodies. A presence of a new organelle (4 microtubules structure close to and running parallel to the flagellar pocket), previously not described in Leishmania donovani's species, was demonstrated in this indigenous strain (from Central Italy). The Authors found a limited number of subpellicular microtubules in this strain, i.e.: 72 microtubules. Differences in size and number of microtubules between strains must be investigated in more rigorous morphometric studies. It's possible that the number of the subpellicular microtubules represents a new taxonomic character.

Humans↗