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A Polleri

Publications and source records attributed to A Polleri.

At least 73 records · Page 4Linked to original sources
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Circadian rhythmicity of prolactin secretion in elderly subjects: changes during bromocriptine treatment.

Prolactin has been taken as an index of neuroendocrine function in aging, where dopaminergic neurotransmission in considered to be impared. The mean concentration of the hormone in the 24 h is higher in the aged men than in the adult controls. A sleep entrained periodicity is present in both aged subjects and controls, but a harmonic analysis of rhythmicity shows that secretory episodes have in aged men a slower periodicity than in adults. In aged men bromocriptine decreases the mean PRL values in the 24 h and the periodicity analysis shows the occurrence of harmonics with shorter period.

Adult↗
PubMedDate not supplied

[Correlations between E.E.G. spectral and plasma prolactin levels in elderly subjects (author's transl)].

Measurement of plasma prolactin levels in elderly subjects demonstrated the presence of a hyperprolactinemia with loss of normal circadian rhythm, regressing after bromocriptine treatment. The administration of bromocriptine to elderly subjects in a normal state of health provokes marked changes in the E.E.G. spectrum (slowing of delta activity, increase in alpha and decrease in beta rhythms). These findings show that there is an alteration in central dopaminergic systems during aging.

Aged↗