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A Carnevali

Publications and source records attributed to A Carnevali.

25 records · Page 2Linked to original sources
PubMed1980

Human round-headed spermatozoa: a quantitative and qualitative cytochemical study on chromatin.

A quantitative and qualitative cytochemical study on human round-headed spermatozoa chromatin(Feulgen-DNA content, basic clear protein content, acid-resistance degree of DNP) was carried out. Feulgen-DNA and basic nuclear protein contents showed in different nuclear classes of various sizes within the whole population a variability of behaviour. Our data suggest the occurrence of meiotic malsegregation events followed by production of aneuploid gametes whose chromatin appears to be more compacted than controls.

Adult↗
PubMedDate not supplied

Cholesterol embolism of bone marrow clinically masquerading as systemic or metastatic tumor.

A case of cholesterol embolism of bone marrow, concerning the pelvis and lumbar region and clinically masquerading as systemic disease or metastatic tumor, is reported in an 82-year-old man hospitalized for acute onset of reddish purple nodules on the legs and toes, intense myalgia and dorsal vertebral bone pain. The clinical manifestations leading to consideration of a systemic disease or metastatic tumor were the abnormal bone scintigraphic findings of the pelvis and lumbar region, the elevation of serum alkaline and acid phosphatase and the increase of the bone isoenzyme fractions. The diagnosis of cholesterol embolism was explained by the histological findings of bone marrow biopsy which showed microinfarctions of bone marrow with an osteoproductive and reparative process, and presence of cholesterol clefts.

Aged↗
PubMedDate not supplied

Cytochrome oxidase and lactate dehydrogenase activities in peroxidized rabbit epididymal spermatozoa.

We report a quantitative cytochemical study on cytochrome oxidase and lactate dehydrogenase activities on rabbit epididymal spermatozoa during spontaneous lipid peroxidation. Our data show that during aerobic incubation both in NTP and KTP media the sperm cytochrome oxidase activity undergoes a significant decrease. The lactate dehydrogenase activity shows different cytochemical patterns in comparison between the two media considered. Such activity significantly increases in rabbit spermatozoa suspended in NTP medium from the first until the sixteenth hour of incubation time. At the following times the lactate dehydrogenase activity significantly declines showing yet until the later times of incubation integrated optical density values fairly high. During the whole period of the aerobic incubation, the spermatozoa suspended in medium KTP show lactate dehydrogenase integrated optical density values which not significantly differ from those of the control in spite of an initial enhancement from the first until the thirteenth hour of the experimental treatment.

Animals↗