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Biomedical subjects

A Cavaliere

Publications and source records attributed to A Cavaliere.

At least 55 records · Page 3Linked to original sources
PubMed1982

Lung carcinogenesis by procarbazine chlorate in BALB/c mice.

A study of the carcinogenic action of procarbazine chlorate in BALB/c/Cb/Se mice showed that this substance significantly increases the incidence or lung tumours in both sexes. The induced tumors were alveolar-lining, papillary and alveolar-papillary type carcinomas with a tendency to invade the bronchial wall.

Animals↗
PubMed1980

Candida myocarditis in a young heroin addict.

A twenty-year-old male heroin addict was found dead in his home. Histological examination of numerous myocardial samples lead to a diagnosis of purulent myocarditis due to Candida albicans.

Adult↗
PubMedDate not supplied

Identification of oxygenated compounds in combustion systems.

An attempt for the spectroscopic identification of oxygenated compounds produced in combustion processes under different environmental conditions is reported in this paper. A deeper knowledge about presence and evolution of such species in dependence of the operating conditions of practical burner represents a fundamental hint to the objective of an advancement of the control of combustion process and reduction of pollutant emissions. This paper mainly focuses on species characterized by the presence of carbonyl functionality since aldehydes, ketones and diketones are among the principal intermediate species and products of hydrocarbon oxidation. They are by themselves to be considered atmospheric pollutants and are also indicators of actual pathways followed during the chemical reactions occurring in the combustion process. For these reasons they are most suitable for the exploitation of the above indicated objectives. In this paper, a classification of spectroscopic features and markers of these classes of carbonyl compounds is presented on the basis of both literature and spectra collected from sample species. This interpretative scheme is then used for the attribution of fluorescence signals collected from a tetradecane spray in different environmental conditions.

Journal Article↗
PubMedDate not supplied

Giant cell tumor of tendon sheath: immunohistochemical study of 20 cases.

AIMS AND BACKGROUND: Giant cell tumor of tendon sheath (GCTTS) is a common tumor occurring on the tendon sheaths of the fingers. The nature of this lesion is still controversial: some researchers consider it a reactive process arising from chronic inflammation while others regard it as a tumor of presumed synovial cell or monocytic macrophage system origin. In an effort to clarify the histogenesis we decided to further investigate the immunophenotypic profile of this tumor. STUDY DESIGN: We studied 20 GCTTS of the fingers using a panel of 18 antibodies, 13 monoclonal and 5 polyclonal. RESULTS: The immunohistochemical investigation revealed that the mononuclear cells of this lesion can be divided into two groups. The cells of the first and more numerous group were positive for vimentin, PG-M1 and KP1 but also for muscle actin (HHF35 monoclonal antibody) and neuron-specific enolase. A second population of mononuclear cells, usually arranged around the giant cells, were positive for PG-M1, KP1, LCA and occasionally for alpha-1-antitrypsin and alpha-1-antichymotrypsin. Multinucleated giant cells were also positive for KP1, PG-M1 and LCA monoclonal antibodies. A variable but usually weak positivity for alpha-1-antitrypsin, alpha-1-antichymotrypsin and lysozyme was also observed. CONCLUSIONS: Our results suggest a synovial cell origin for GCTTS and do not support the hypothesis that it could be a neoplasm with a true histiocytic origin. The positivity of some cells for the HHF35 antibody, together with electron microscopic evidence of filament bundles with focal dense bodies, suggests that at least part of the mononuclear cells may have a myofibroblastic differentiation.

Adolescent↗
PubMedDate not supplied

Primary malignant lymphoma of the central nervous system. Case report.

We report a case of primary malignant lymphoma of the central nervous system found in a 69-year old woman suffering from Parkinson's disease and hypertension. The CAT scan revealed an ill defined lesion in the left frontal lobe which at surgery appeared as a brownish-black friable neoformation. The histologic exam revealed a proliferation of voluminous round lymphoid cells with 2 or 3 nucleoli often apposed to the nuclear membrane. At the immunohistochemical investigation they were positive for LC and L26 monoclonal antibodies. Malignant centroblastic B-cell lymphoma was diagnosed. All post-surgery investigations excluded the presence of neoplasms in other sites.

Aged↗