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Biomedical subjects

G Vezzani

Publications and source records attributed to G Vezzani.

7 recordsLinked to original sources
PubMed2004

[Pulmonary hyalinizing granuloma. Clinicopathologic study of 2 cases, with some original ultrastructural observations and review of the literature].

AIM: To report the clinical, histological, immunohistochemical and ultrastructural features of 2 new cases of pulmonary hyalinizing granuloma. RESULTS: Both patients were males: one, 72-year-old with retroperitoneal fibrosis, was asymptomatic, while the other, 67-year-old, presented with non productive cough. In both cases, a chest x-ray showed a solitary pulmonary nodule. Microscopically, the nodules were well circumscribed and composed of lamellae of hyalinized collagen. At the periphery, a more cellular rim consisting of lymphocytes, plasma cells and myofibroblasts was present. Immunohistochemical and ultrastructural examinations revealed myofibroblastic elements actively synthesizing collagen fibrils.

Aged↗
PubMed1993

Acute and chronic hyperbaric oxygen exposure in humans: effects on blood polyamines, adrenocorticotropin and beta-endorphin.

Plasma beta-endorphin, adrenocorticotropin (ACTH) and blood polyamine (spermidine and spermine) concentrations were evaluated in healthy adult male athletes undergoing hyperbaric oxygen exposure for 10 days (2.8 atm, 100% O2, 60 min daily). In the "acute phase", corresponding to the first day of treatment, and in the "acute in the chronic phase", corresponding to the values obtained on the 5th and 10th days after 60 min of hyperbaric O2, both ACTH and beta-endorphin levels increased significantly, whereas no variations were observed for polyamine concentrations. In the "chronic phase", corresponding to the basal values of the 5th and 10th days of treatment, we found a different pattern. In fact, the concentration of polyamines showed a remarkable enhancement, while ACTH and beta-endorphin levels remained unchanged. No significant variations were observed during hyperbarism with air. These results demonstrate different modifications of polyamines and beta-endorphin and ACTH in subjects submitted to hyperbaric oxygen exposure.

Adrenocorticotropic Hormone↗
PubMed1979

[Measurement of compliance and resistance to respiratory airflow in the course of mechanical ventilation].

The importance in resuscitation treatment of the measurement of air ways flow resistance and compliance is stressed. In this regard, attention is paid to the possibility of utilizing the automatic respiratory (recording the mouth pressure curve) as an authentic measuring apparatus for these factors. Research into mechanical models and real patients also points to the possibility (seemingly not reported up to now) of measuring expiratory resistance independently and of highlighting air-trapping phenomena.

Airway Resistance↗