Abstract：
:There is evidence that senescence affects neurotransmission at different levels. In particular, this review summarizes the studies on age-dependent modifications in protein phosphorylation, which represents the final pathway in the action of transmitters and hormones at neuronal level. Cyclic AMP-dependent protein kinase and protein kinase C have been reported to be modified during aging in various cerebral areas; the changes may involve either enzyme activity or substrate availability. These findings can be related to the alterations in neurotransmitter function and synaptic efficiency observed in the senescent brain. The activity of the other types of protein kinases (tyrosine-, cGMP-, calcium/calmodulin-dependent) during aging needs to be explored. An emerging point is the role of protein phosphorylation in the transfer of membrane signals to the nucleus, for the activation or disactivation of specific genes responsible for long-term neuronal events. Along this view, alterations in protein kinase pathway during senescence would ultimately affect gene expression, resulting in long term modifications of cell function. The reviewed literature opens the perspective of restoring some of the deficits associated with senescence by modulating protein phosphorylation pathway.
journal_name
Life Scijournal_title
Life sciencesauthors
Magnoni MS,Govoni S,Battaini F,Trabucchi Mdoi
10.1016/0024-3205(91)90492-tsubject
Has Abstractpub_date
1991-01-01 00:00:00pages
373-85issue
5eissn
0024-3205issn
1879-0631pii
0024-3205(91)90492-Tjournal_volume
48pub_type
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