Abstract:
:The actions and receptor for ciliary neurotrophic factor (CNTF) are largely restricted to cells of the nervous system, although one of the CNTF receptor components, CNTFR alpha, is expressed by skeletal muscle. Here we show that the other CNTF receptor components, LIFR beta and gp130, are also expressed by skeletal muscle and that expression of all three CNTF receptor components is greatly increased in denervated muscle. In vivo, administration of CNTF activates these receptors on skeletal muscle by inducing receptor phosphorylation and immediate-early gene responses. Furthermore, CNTF reduces the denervation-induced atrophy of muscle and attenuates the reduced twitch and tetanic tensions that result from muscle denervation. Our findings reveal that, in addition to its known neurotrophic actions, CNTF exerts myotrophic effects by attenuating the morphological and functional changes associated with denervation of rat skeletal muscle.
journal_name
Celljournal_title
Cellauthors
Helgren ME,Squinto SP,Davis HL,Parry DJ,Boulton TG,Heck CS,Zhu Y,Yancopoulos GD,Lindsay RM,DiStefano PSdoi
10.1016/0092-8674(94)90113-9subject
Has Abstractpub_date
1994-02-11 00:00:00pages
493-504issue
3eissn
0092-8674issn
1097-4172pii
0092-8674(94)90113-9journal_volume
76pub_type
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