Biomedical subjects
Publications and source records attributed to F Aragona.
Muscles of alcoholic rats undergo histochemical and ultrastructural study. Significative alterations have not been found. The authors compare their experimental data with analogous human pathology, pointing out the possible biochemical and immunological differences.
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After a brief review of the various techniques so far employed in the transurethral manipulation of ureteral calculi, the authors report their experience with the Fogarty catheter. The series includes 24 patients with medium sized or small stones located in the lower third of the ureter; 17 (74%) patients were successfully treated, whereas 7 (26%) had to be operated. The simplicity, rapidity, efficaciousness and innocuity of the aforesaid technique, in opposition to the risks of the other well-known stone-extractors, is emphasized.
The effects of stress are usually studied in animal models. The organs of 103 subjects who died instantly or very rapidly from gunshot wound were histologically studied. Everyone, within organized criminality, lives under chronic stress. In the hypothalamus a marked depletion of neurosecretive granules of neurons in the supraopticus nucleus, paraventricular nucleus and median eminence was observed, with frequent spreading of these granules along the axons, towards the neurohypophysis. Glial proliferation and frequent chronic perivascular edema were observed in the white substance, as were typical stress lesions in the adrenal gland, a marked depletion of lymphocytes in the splenic follicles, a focal coagulative myocytolysis and the consequent fibrosis in the heart, etc. These findings are the expression of the chronic stress response and of the related psychological state that may also be an aspect of depressive disorders.