We investigated the effects of nerve growth factor (NGF) on expression of K ุ channels in cultured skeletal muscle. The channels studied were (1) charybdotoxin (ChTx)-sensitive channels by using a polyclonal antibody raised in rabbits against ChTx, ( ) Kv1.5 voltage-sensitive channels, and (3) apami
Tissue concentrations of nerve growth factor in aging rat heart and skeletal muscle
โ Scribed by Hans Joerg Stuerenburg; Klaus Kunze
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 34 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0148-639X
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โฆ Synopsis
In order to examine the association between adult nerve growth factor (NGF) levels and age-related changes in skeletal and heart muscle mass, we determined NGF concentrations in both tissues. NGF concentrations in rat heart muscle were significantly higher than those in skeletal muscle. NGF concentrations in heart muscle had a significant positive correlation with heart muscle wet weight. A causal association may exist between age-related changes in adult heart muscle mass and tissue NGF levels (in contrast to skeletal muscle). Among the potential clinical implications for skeletal muscle, it appears that age-related delay or deterioration in regeneration processes in neuromuscular diseases, or age-related decline in skeletal muscle mass, are not caused by reduced tissue NGF concentrations.
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Intraspinal and behavioral events were studied in adult rats with nociceptive nerves that were undergoing collateral sprouting into adjacent denervated skin. This sprouting, which is driven by endogenous nerve growth factor (NGF), did not cause hyperalgesia. For comparison, we studied an exogenous N