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M Belli

Publications and source records attributed to M Belli.

96 records · Page 6Linked to original sources
PubMedDate not supplied

[Behaviour of glycemia in rats inoculated with prostaglandin (author's transl)].

The workers have studied the behaviour of the glycemia in rats inoculated with PGE1 and PGE2 at various doses. They have pointed out a persistent hyperglycemia in the various drawings of blood carried out at distance of time. The level of hyperglycemia is the same for the various classes of similar PG and it is independent from the doses. As regards the mechanism of action, the workers suppose a confluence of succession of effects on various stages of the glycidic metabolism.

Animals↗
PubMedDate not supplied

Ultrastructural aspects of two different mast cell populations in human healthy gingival tissue.

The results of our recent microscopy studies clearly have demonstrated the constant presence of numerous metachromatic cells in healthy human gingival connective tissue. Despite the great number of studies on mast cell population in many human organs (lung, skin, uterus, and bowel), at the present time few are the studies regarding the morphostructural aspects of mast cells in the human gingiva. The aim of this study was to assess by transmission electron microscopy the presence of mast cells in the healthy human gingiva and to characterize the ultrastructural aspects of mast cells populations. 30 specimens of human gingival tissue were collected from 30 patients with informed consent. The samples were prepared for T.E.M. examination. In all the ultrathin sections observed we detected numerous and ubiquitarious mast cells. These exhibited several morphological types of cytoplasmic granules with characteristic subgranular architectural variety in shape and density. This allowed us to divide mast cells into two groups: cells with granules consisted of compact coiled scrolls, fine granular material and lattice--grafting configuration, and cells containing granules with discrete scrolls formed by more concentric lamellae and particulate structure. The two ultrastructural aspects observed correspond to McTC and McT of the international literature. Therefore in the human gingival connective tissue, like in other organs, two types of mast cells are clearly present. Surprisingly, the human gingival tissue shows, like the lung, McT as the prevailing subpopulation, in contrast to the skin, uterus and gastrointestinal submucosa where McTC prevail.

Adolescent↗
PubMedDate not supplied

[Lipids in Taenia saginata].

Lipids of Taenia saginata were analyzed by means of thin layer chromatography and gas liquid chromatography. Total lipids comprised about 3.3% of the fresh weight and consisted mainly of triglycerides (65.62%), sterols (19.58%), phospholipids (10.16%). The fatty acids of the triglycerides were mainly unsaturated and differed from those of phospholipids. The parasite has practically no "de novo" fatty acid biosynthesis, although this cestode did synthetize complex lipids from single lipids provided by the diet.

Animals↗