Abstract:
:Plasminogen activators (PAs) have been suggested to play a role in neuronal migration and glial cell proliferation in the developing CNS. Less is known, however, about the role of PAs in the mature nervous system. To elucidate the role of tissue type plasminogen activator (tPA) in the nervous system we used in situ hybridization to study the expression of tPA mRNA within the rat facial nucleus after facial nerve transection. We also studied the effect of MK-801 on tPA mRNA expression in order to investigate whether the previously reported N-methyl-D-aspartate (NMDA) receptor activation is involved in this model. tPA mRNA was expressed in the ipsilateral facial motoneurones from 6 h after injury. This expression continued for at least 2 weeks after facial nerve transection. Administration of MK-801 before axonal injury did not affect the expression of tPA mRNA in the facial nucleus. These data suggest that tPA might be involved in the regenerative process without NMDA receptor activation in mature facial neurones.
journal_name
Neuroreportjournal_title
Neuroreportauthors
Yuguchi T,Kohmura E,Yamada K,Otsuki H,Sakaki T,Yamashita T,Nonaka M,Sakaguchi T,Wanaka A,Hayakawa Tdoi
10.1097/00001756-199701200-00008subject
Has Abstractpub_date
1997-01-20 00:00:00pages
419-22issue
2eissn
0959-4965issn
1473-558Xjournal_volume
8pub_type
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